Application of 2-D gas chromatography for environmental analysis The WritePass Journal

Application of 2-D gas chromatography for environmental analysis Abstract Application of 2-D gas chromatography for environmental analysis Abstract IntroductionPrinciple for Two-Dimensional Gas Chromatography (GCÃâ€"GC)Application of GCÃâ€"GC in Environmental AnalysisAnalysis of PCBs, PCDDs and PCDFsPesticide AnalysisAir AnalysisConclusionsReferencesRelated Abstract The conventional one-dimensional gas chromatography (1D-GC) compared to a comprehensive two-dimensional gas chromatography (GCÃâ€"GC) which provides the highest capacity, improved resolution and many of sensitivity. Additionally, it was create two-dimensional structure chromatogram, which is the proof of assistance in the composite class. Samples can often be minimized or even eliminated in some cases for the practice, as technology provides excellent separation power. All these benefits make GCÃâ€"GC in the toxic compounds involved in the determination of trace level environmental analysis of a very good tool in complex matrices. This paper summarizes some of the environmental analysis and review and monitoring of the GCÃâ€"GC applications Introduction Many years of humans society development led to many of the world distribution of chemicals in the atmosphere, the Earths surface and land border. Many of these compounds are harmful to the worlds ecosystems and the people. Analysis of these compounds in the environment is important. When analytes have high vapor pressure, gas chromatography is the selection method. The main problem in the environmental analysis is to analyze the existence of material is usually very complex matrix trace. Result, a huge research work into the analysis of major environmental pollutants [1]. Methods used in environmental analysis is usually the same as in all aspects of practice. It includes sampling, sample preparation, separation and detection. All of these steps may benefit from change, it is usually the biggest limitations imposed by the separation step. In gas chromatography (GC) cases, the majority of environmental samples containing analyte and matrix components of many closely eluting peaks in a chromatographic dimension (1D) the maximum total capacity is greatly exceeded, and many coelutions and unresolved in the separation region was observed. This led to the analyte of interest and quantify the poor separation [1]. Poor resolution in the chromatographic analysis of sample preparation and detection of high demand for equipment placement. Expensive and labor-intensive sample preparation, and solvent waste may cause a lot of harmful to the environment.   By microextraction method development, such as liquid-liquid microextraction (LLME) and solid phase microextraction (SPME) and non-dissolved sample introduction system (ie, direct thermal desorption), has the potential to greatly simplify the sample preparation process, without sacrificing sensitivity and selectivity [2-5]. On investigation, lack of resolution often means using mass spectrometry (MS), including high-resolution mass spectrometry (HRMS), in some cases, is necessary. Figure 1 illustrates the GC-MS encountered in the common problems [36]. In the analysis of food extracts commonly 1D-GC clinch with insecticides (Fig. 1b), trace interest (in this case chlorfenvinphos) coelute analyte and sample matrix is ​​more abundant components. Results obtained for such compounds, mass spectrometry (Figure 1e) frequently contains compounds derived from fragments of interference, leading to poor matching and library mass spectrometry (Fig. 1d). MS overlap algorithm may greatly improve the quality of the information of coeluting peak, but they are not always successful, when the number of coelutions is high. Figure 1a shows, full 2D-GC (GCÃâ€"GC) to increase space and improve the chromatographic separation of the resolution, resulting in the separation of analytes of interest (chlorfenvinphos) from coeluting compounds and matrix components. Result, improved the quality of the analyte mass (Fig. 1c), taking into account the proof of a more confident analysis of material (Figure 1d). It is possible that some coelutions exist; these may often solve efficiently overlap with the MS, leading to better results, while reducing the number of components when the coeluting. GCÃâ€"GC separation with the increased power res ulting in a successful demonstration and quantification of analytes. Fig. 1 GCÃâ€"GC–TOF MS versus 1D-GC–TOF MS for the analysis of a carrot extract. The highest-capacity problem in terms of conventional gas chromatography through multi-dimensional gas chromatography to cope (MDGC) implementation. In this method, one-dimensional (1D) chromatogram of a complex and unresolved part is subjected to the stationary phase coated with a second column separation of the other selectivity [1]. Although this method increases the 1D chromatographic part of the choice of chromatographic resolutions, this method with automation challenging, and only a few sample components can be adequately addressed. However, the many applications is good for the PCBs, pesticides and toxaphene analysis, among other things, the report with different degrees of success [6-12]. Overall, however, is the exact number of separation will be beneficial, if the entire sample is subjected to a separation in two dimensions. This became possible a comprehensive two-dimensional gas chromatography (GCÃâ€"GC) in the introduction. Principle for Two-Dimensional Gas Chromatography (GCÃâ€"GC) 2D-GC is a comprehensive method of fundamental solution to meet the highest capacity. A typical structure of GCÃâ€"GC set in Figure 2. The basic structure of GCÃâ€"GC using virtually is the same as the composition of 1D-GC. These include syringes, oven, columns and detectors. In a typical GCÃâ€"GC system, using non-polar stationary phase coated with a thick coating of a long column was installed as the main column. The exports through a special interface or modem is connected to the entrance of the second dimension column coated with stationary phase of another selectivity. Modulator connected not only to primary and secondary column; its main role is repeated trapping of the effluent fractions from the first dimension and periodic injection of them to the form of narrow pulses separated into further chromatographic analysis. Because the operation of 2D-GC in the fast condition, the detector in the GCÃâ€"GC selection is limited to those capable of fast data collection rate. For e xample, GCÃâ€"GC detector can include flame ionization detector (FID), electron capture detector (ECD), single atomic emission detector (AED), sulfur compounds optical detector (SCD), nitrogen photodetector compounds (NCD) and time of flight mass spectrometer (TOF MS). Fig. 2 A block diagram of a GCÃâ€"GC system. Modulator is the important part of the instrument, because it guarantees the separation is comprehensive and multidimensional [13]. In 1991, the first implementation of the GCÃâ€"GC, the field has witnessed a number of modulator design [14]. Initially, the use of thermal adjustment of the heat modulator was implemented; however, the modular cryogenic liquid (liquid carbon dioxide or nitrogen) is currently the main use. Modulator at low temperatures within the system, each design has its own distinct advantages and limitations, making it suitable for analysis of the specific type. For example, the analysis of water pollutants has been developed an interface [19], when the buildings, and an in-house applications modulator in the quantitative analysis of PAHs and PCBs has been described [15]. Then, the modulator of the different types of analyte in the analysis of organohalogenated been evaluated [16]. The implementation of GCÃâ€"GC provides the following advantage to surpass the 1D separation method: improvement separation strength; improved sensitivities; and constructs or highly predetermined, stratography spectrum. In the environment analysis, GCÃâ€"GC has the potential to improve the toxic compound through the separation from the coeluting analysis and the matrix component, increases the detection limit such chemical product and provides the ideal for the surveillance application the two-dimensional stratography spectrum which constructs. Finally, this possibly causes to reduce to the smallest sample preparation procedure, and reduces analysis time. Other applications are also possible. For example, recently, GCÃâ€"GC the product estimate which divided into for the diesel oil hydrocarbon environment had used, was important affected many ecosystems [17] the oil leak. Application of GCÃâ€"GC in Environmental Analysis Water and Sediment Analysis The water is the most basic material to the life in planet. In order to estimate that the tap water safety for human consumption, the rapid, precise and the accurate method needs to analysis the water. The sediment is also important for river and the lake; The analysis of water pollutant is time-consuming sample preparation, follows by GC-MS analyzes. In the initial period realized that GCÃâ€"GC has the great potential improvement to analysis water and sediment. In its earliest applications in this region, GCÃâ€"GC was explained possibly from the common matrix interference which is separating the BTEX (benzene, toluene, ethyl benzene and xylene) and methyl alcohol tert butyl ether (MTBE), when and SPME [18]. The separation strength of GCÃâ€"GC is improved; MTBE and the benzene are the foundation line solution in the 2nd chromatograph analysis space. This research showed GCÃâ€"GC has the great potential for water   pollutant analysis by combination this technology with microextraction (head space SPME). Certain Earths freshwater body is polluted daily by petroleum and the oil contamination. In the 1970s, it is pays attention the petroleum sample stratography spectrum to exhibit a model, has not solved, foundation line which rises â€Å"hillock† [20]. Chromatogram is the complex part, including compound many different kinds, refers to â€Å"unsolution complex mixture† at present [21]. GCÃâ€"GC-FID uses in analysis of two different freshwater sediments [21]. Observed the conventional sample preparation procedure, the author has used the superior resolution, and has constructed the chromatogram of sediment for UCM different levele by GCÃâ€"GC. The chromatogram obtained for two samples provides by clue direction contamination important source researcher. , The research showed GCÃâ€"GC the potential importantly in the environment law, for an environmental chemistry basic tool, environmental audit. The nonylphenol polyethylene ethoxides degenerated product, was possible feminine hormone splitter [22]. Increases the concern, NPs from the urban district [23] the water and the deposition present are found. GCÃâ€"GC-TOF MS is the NP isomer separation from technical mixture [24] used. 41 components are identified. Figure 3 explanation GCÃâ€"GC-TOF MS application to NP isomer respective ion trace analysis from identical research. Two NP stave products were explained that m/z 135 (chart 3a) and m/z 149 (chart 3b). Two chromatogram exhibition group type separation, emphasizes by the connection compound peak maximum value in the identical homologous family incline line. It from as a result of various NP isomer structure similarity, the complete separation is the very difficult this chart is obvious. However, other resolution strength by GCÃâ€"GC provided â€Å"cleanly† the mass spectrum to provide, made the analysis proof to be easier. Fig. 3. Extracted ion GCÃâ€"GC–TOF MS chromatograms of a technical nonylphenyl (NP) mixture GCÃâ€"GC for to the environment pollutants analysis was recently the application current in oceanic deposit [25]. A qualitative method has developed, fast and is unified according to the tendency by the ultrasonic wave assistances extraction to the complex samples high resolution analysis provides to GCÃâ€"GC-TOF UAE which is fast and high efficiency selective sampling pretreatment procedure is utilized solid sample [30]. A high efficiency and has the selective sample preparation method, when the powerful separation method GCÃâ€"GC combine with UAE can causes 1500 kind of more than several not aromatic hydrocarbon (PAHs) the compound and the certificate resolution, NPs and dialkylated benzene. Once more, GCÃâ€"GC not only ability from each other isolation analysis, and has proven from the sample matrix priceless. The carcinogen which and the mutagen suspected, PAHs is many industry activity by-product and the universal existence is distributed in the environment. Because it requests the hard sledding and has the selective sample preparation, they in the deposition samples trace determination are difficult. The improvement to complex matrixs PAHs, the Cavagnino trace analysis with GCÃâ€"GC-FID [large-volume splitless injection (LVSI) technology]. Sample complex which analyzes is many deposition sample representative who obtains from the river and the lake. Separated and investigates seven PAHs which diluted in the synthesis diesel oil to demonstrate the LVSI- GCÃâ€"GC-FID potential achievement in the low ppb level for to trace amount analysis one powerful and the rapid tool in complex matrix PAHs. While, Ong. and so on has developed a PAHs rapid surveillance method probably in the soil sample, utilizes liquid extraction (PLE) GCÃâ€"GC-FID [27]. The current publishing work is merely GCÃâ€"GC latent serviceable demonstration to deposition sample PAH analysis. In brief, with the resolution which improves, improvement many sensitivities and the stratography spectrum which orders, GCÃâ€"GC may add on the result which effective and the rapid sample preparation method produces cannot be achieved by the routine analysis procedure. Analysis of PCBs, PCDDs and PCDFs Polychlorinated dibenzodioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and some polychlorinated biphenyl (PCB) congeners is dominated by bioaccumulation and biomagnification in the environment and thus is a dangerous The wildlife and people. Many are suspected carcinogens and induced changes of [28]. Of PCBs, dioxins and furans in the environment assessment of certain requirements of a method to isolate and quantify them in complex samples such as food, soil and water. GCÃâ€"GC provides one advantageous method in complex matrixs PCDDs and the PCDFs analysis. In its one of early experiments, a liquid crystal main column and a limitless secondary column (according to steam pressure separation) uses in (according to the planarity separation) separates the tone and from technical mixture [30] non-straight PCB congeners. The connection GCÃâ€"GC microelectron captures investigates (MECD) is toxic PCBs, PCDDs and the PCDFs determination is the application in the cod liver sample [29]. The analysis result showed all 12 priority PCB from liver sample congeners, and most toxic Dai Aoxin and fu nan the full separation and the proof nail fast with 90 PCBs and 17 contain poison PCDDs and PCDFs. Moreover, when compares with the standard sample preparation procedure, the liver sample pretreatment does not have the selectivity and reduces to is smallest. It has included the direct injection and fractionation followed cell degree of illness gradually draws back, the centrifuge process to enter GCÃâ€"GC the system. Figure 4 showing from the 2nd stratography spectrum which obtains to the cod liver samples analysis. Recently, an item of multilaboratory research has been conducted in food sample, analyzes PCDD/Fs and World Health Organization PCBs through once more GCÃâ€"GC-MECD and the GC-HRMS comparison and the explanation GCÃâ€"GC great potential in the rapid surveillance application [31]. With the standard analysis method comparison GCÃâ€"GC, GCÃâ€"GC the performance is unified (GCÃâ€"GC-ID-TOF MS) has to 13C mark isotopic dilution (ID) TOF MS conventional GC-HRMS to appraise [32]. Quantification 17 PCDD/Fs and four PCBs nail fast in the soil and in the deposition sample are two methods are comparable. However, GCÃâ€"GC implementation request only smallest sample preparation, and causes the signal improvement (factor 5-10), superior resolution, lower instrumentation expense, and improved TOF the MS data [32] the ghost overlaps legitimately. As highest capacity which and resolution result increases, the unknown compounds proof is possible. Fig. 4 GCÃâ€"GC–ECD chromatogram of a cod liver sample spiked with 90 PCBs [29]. Pesticide Analysis Forms the challenge to the pesticide analysis to analyze the chemist to prepare about the sample to make the law and the chromatography. Is similar other toxic compound, the pesticide is usually distributed in the trace amount environment. Moreover, they are extreme complex matrix part of for example foods, the soil and the water sample. Needs to be like today presses to the rapid high resolution analysis method. GCÃâ€"GC the application early showed the method potential regular implementation to the pesticide analysis in persons organization in the future. Supercritical invariable extraction (SFE) with GCÃâ€"GC-FID together utilizes the analysis in persons blood serum [33] the pesticide. To were few from the sharp persons blood serum extractions 15 pesticides foundation line segments achieve in four minutes. Later, GCÃâ€"GC-FID to estimate that the child pesticide exposure has been utilized through the use urine and the blood serum [34] low-power. This special example in were few showed 16 pesticide complete separations in four minutes. Recently, has been demonstrated including PCBs and the organic chlorine pesticide 59 organization pollutants proof and the quantification [35]. But GCÃâ€"GC-ID-TOF MS completed the comparable result author who ran in standard routine analysis (GC-ID-TOFMS) to indicate that analyzed like this, three different injection needs. GCÃâ€"GC the application earl y showed the method potential regular implementation to the pesticide analysis in persons organization in the future. Supercritical invariable extraction (SFE) with GCÃâ€"GC-FID together utilizes the analysis in persons blood serum [33]. Pesticide determination in food extract is similarly important. Separated using GCÃâ€"GC-TOF MS and identifies 58 pesticides to nail fast completely on the vegetable was explained [36]. This completed with has been smallest and the non-selective sample preparation: The celery or the carrot sample and the sodium acetate and the ethyl acetate have chopped, mixed, was mixed, has been separated, and is dried. The extract is injected entered GCÃâ€"GC [36]. Recently, separated 12 halogenate compound kind of groups five different GCÃâ€"GC column combination to appraise, including PCBs, PCDDs, PCDFs, multi-chlorobenzene diphenyl ester (PCDEs), multi-chlorobenzene naphthalene (PCNs), multi-chlorobenzene dibenzothiophenes (PCDTs), multi-chlorobenzene terphenyl (PCTs), multi-chlorobenzene alkane (PCAs), toxaphene, multi-bromination biphenyl (PBBs), multi-bromination diphenyl ether (PBDEs) and organic chlorine pesticide (OCPs) [37]. Although this article focal point is the different compound kind of major group separates, was also explained in the family separation. When the separation and proof all 28 OCPs are pure pesticide mixture has only been demonstrated that majority has been separated fully, since, when injects along other 11 compound kind of [37]. Therefore, its as if that the column establishment which disposes appropriately with one, GCÃâ€"GC may use takes mainly shields step for the environment sample contamination and along pol lutant many other kind of pesticides, with smallest sample preparation. Air Analysis Volatile organic compound (VOCs) in metropolis photochemical smog [38] the generation plays a strong character. The World Health Organization thought that possibly has to the air granular materials exposition to the human health [39] the ill effect. But, uncertainty existence about from VOCs health effect in metropolis granular material (PM) [40]. Therefore, requests rapid, reliable and information method guarantee in air pollutant successful surveillance, proof and discovery. Many PAHs and PAHs (oxy-PAHs) which oxidizes is the carcinogen which and the mutagen suspected, with, therefore they are in the metropolis aerosol analysis profitable target analysis. GCÃâ€"GC-FID and GCÃâ€"GC four-pole MS (QMS) is applied permits from Finland about 1500 peaks goal PAHs [41] investigates in the metropolis air sample and the proof. But woman is unified the method for the compound proof and the quantification, used GCÃâ€"GC-FID the combination to confirm the good reproducibility. 13 non-goal PAHs has been identified, and ten goal PAHs by quota. Found PAH centralism scope (0.5-5.5 ng/m3) with in Europe [41] other parts of standard methods obtained the result was comparable. The cigarette smoke is estimate extreme complex mixture component [43] which has not recognized including about 4,700 kind of identifications compound and 100,000. GCÃâ€"GC-TOFMS utilizes the solution approximately from the cigarette smoke [43] 30,000 peaks. After this, analyzes cigarette smoke condensate simpler sample determination neutrality score [44], basic score [45] and acidic score [46] chemical composition. Conventional GC-MS possible to separate 200 unknown peaks and identifies 115 hydrocarbons from the cigarette condensate limitless neutral scores; To identical sample GCÃâ€"GC analysis, however, has achieved 4,000 kind of compound separations and 1,800 hydrocarbons [44] proved. In another research, GCÃâ€"GC-TOF has identified 377 kind of nitrogen-containing compound to the cigarette condensates basic scores MS analysis, in 155 is the pyridine derivative, 104 kinds kui lin or different kui lin derivative and 56 kind of pyrazine derivative [45]. Conclusions GCÃâ€"GC has achieved the condition rapidly for to the volatile organic compound analysis most powerful tool. It appoints oneself achievement to be suitable completely for in the complex sample surveillance analysis technology. In the environment analyzed area, this includes PCBs by the analysis many example testimony to the common environment pollutant, PCDDs, PCDFs, PAHs and the pesticide in the complex environment matrix. Moreover, GCÃâ€"GC has the potential to simplify the sample preparation procedure (even completely to eliminate them), when simultaneously causes when the shorter overall analysis time high resolution stratography spectrum. Regarding widely a new analysis method which adopts, not only it is certainly reliable and renewable, but it should also exhibit the significant advantage to surpass the method which accepts. The example reported the showing GCÃâ€"GC method advantage in this review in the traditional 1DGC separation. In GCÃâ€"GC historical first years period, the instrumentation development is the main focal point; However, from GCÃâ€"GC systems commercialization, the application quantity which reported greatly increases in the environment analysis and other scientific fields. Therefore, we may anticipate that the transition automation GCÃâ€"GC is unified on-line sample which the correspondence uses to prepare gradually the equipment in the regular environmental monitoring. References 1. Marriott PJ. Haglund P, Ong RCY. Clin Chim Acta. 2003, 328:1–19. 2. Pawliszyn J. Solid phase microextraction, theory and practice. Wiley, New York. 1997. 3. Pawliszyn J. (1999) Applications of solid phase microextraction. Royal Society of Chemistry, Cambridge. 4. Dettmer K, Engewald W. Anal Bioanal Chem. 2002, 373: 490–500. 5. Butrym E. LC-GC. 1999, 17:S19–S24. 6. de Geus H-J, Wester PG, Schelvis A, de Boer J, Brinkman UATh. J Environ Monit. 2000, 2:503–511. 7. Mrowetz SHJ. J Chromatogr A. 1983, 279:173–187. 8. 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8 Rules About Punctuation and Quotation Marks

8 Rules About Punctuation and Quotation Marks 8 Rules About Punctuation and Quotation Marks 8 Rules About Punctuation and Quotation Marks By Mark Nichol The use of full or partial quotation marks or of paraphrases calls for attention to detail and adherence to a few punctuation rules. Notice that the examples below are deliberately incorrect. 1. â€Å"Most agree the word means something like: This stream meanders through something red.’† The words in the quotation collectively serve the grammatical function of a noun and are not set off from the attribution by a comma or a colon. 2. â€Å"The motto, ‘Might makes right’ applies here.† In this similar case, â€Å"the motto† is an appositive for â€Å"Might makes right,† just as in â€Å"the Web site DailyWritingTips.com,† â€Å"the Web site† is an appositive of the site’s name: â€Å"The motto ‘Might makes right’ applies here.† To insert a comma implies that this is the only existing motto (though there should then be one after right as well to complete the restrictive phrase). 3. â€Å"According to the book, at the first sign of an outbreak, ‘Children were whisked home from summer camps in the middle of the night.’† If an incomplete quotation is completed by a preceding paraphrase, lowercase the first word of the partial quotation unless it is a proper noun. In this case, â€Å"at the first sign of an outbreak† substitutes for the missing introductory phrase: â€Å"According to the book, at the first sign of an outbreak, ‘children were whisked home from summer camps in the middle of the night.’† In scholarly writing, the first letter of children should be bracketed to clarify that it was capitalized in the original source, but that nicety is unnecessary in general. 4. â€Å"He concluded that what America needs most is a â€Å"guiding belief† for citizens, industry, and government.† This sentence is essentially correct, but when a partial quote consists of such a brief phrase, ask yourself whether the quotation marks are justified; why not just paraphrase the entire sentence?: â€Å"He concluded that what America needs most is a guiding belief for citizens, industry, and government.† 5. â€Å"Her response was that she had ‘definitely locked the door on my way out.’† A writer might deem it crucial to retain a partial quote, but if the speaker uses the first person, the quotation won’t fit the reportorial third-person framing, and a paraphrase is necessary: â€Å"Her response was that she had definitely locked the door on her way out.† (Alternatively, you could paraphrase part of the direct quote â€Å"Her response was that she had ‘definitely locked the door’ on her way out† but, again, with diminishing returns.) 6. â€Å"The question is which selection is better?† This is a conjectural question not literally stated, so it is only tangentially related to the other examples here, but it’s important to point out that such constructions should include a comma: â€Å"The question is, which turnoff did she take?† (However, when the sentence is not stated as a question, the comma should be omitted: â€Å"The question is which selection is better.†) 7. When asked to clarify his earlier statement, he said: ‘I have nothing to add.’† Writers frequently introduce a statement with a colon rather than a comma, but this construction is awkward, because a colon invites the reader to put on the brakes, rather than just slow down, a fleeting action the more flexible comma invites: â€Å"When asked to clarify his earlier statement, he said, ‘I have nothing to add.’† (See also the second example, above.) Do retain the colon, however, when the attribution is an independent clause, as here: â€Å"He made this shocking public statement: ‘I think there is a fair chance Perth will be the twenty-first century’s first ghost metropolis.’† 8. â€Å"‘This [the subway bombing] is a minor thing that will develop into something major,’ she added.† When scholarly standards or journalistic integrity demands an exact quotation, but a full statement isn’t available, here’s the conventional but clunky solution: Provide the rest of what the speaker or writer meant to say or the definite noun they didn’t provide in order to fortify your class or reporting assignment within brackets. But note that the bracketed insertion should replace, not supplement, the indefinite subject: â€Å"‘[The subway bombing] is a minor thing that will develop into something major,’ she added.† Alternatively, especially in less-than-formal contexts (or even in newspaper reporting I won’t tell), feel free when you are certain of the intended specifics to employ a handy technique called silent correction. In other words, bail on the brackets: â€Å"The subway bombing is a minor thing that will develop into something major,† she added.† Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Punctuation category, check our popular posts, or choose a related post below:10 Grammar Mistakes You Should AvoidCapitalization Rules for the Names of GamesDozen: Singular or Plural?

Business Models and Planning Case Study Example | Topics and Well Written Essays - 750 words

Business Models and Planning - Case Study Example The restaurants are intended to serve medium and high income community. It fits into the busy lives of the community by offering quick foods at premium prices. It will be open on weekends and late night. The primary target for RFD is the medium and high income earners. This group includes household that have an average annual income of above $50000 and reside in urban neighborhoods (Lassiter & Roberts, 1998). It is assumed that this group has a high propensity to consume desserts and other services offered by the restaurant. The target market resides in multiunit houses in uptown areas. Such populations are in California, Texas, New York City and several other Cities and States in the country. Most Dessert users are aged between 25-54. The group is comprised of people who are working and attend outside events such as parties, dinners and theaters. As such, they have a sizeable amount of disposable income and are willing to consume if they come across an RFD restaurant. People attending night events are highly likely to enter a restaurant for refreshments. The restaurant will differentiate itself from others based on human resource, quality, and service. The restaurant will ensure that its staff are trained in specific products and services offered by the restaurant. All workers are required to pursue further studies on baking, pastry, and hospitality. Also, staff members are given a chance to practice their skills. Quality is emphasized in the restaurant. The restaurant specializes in making desserts. As such, efforts are concentrated towards ensuring the best desserts. Unlike other restaurants, RFD desserts are not frozen for future sales. The desserts are prepared daily to enhance their freshness and hence customer satisfaction (Lassiter & Roberts, 1998). RFD also offers customized services to its regular customers. In fact, the restaurant stores data relating to its loyal customers. Thus, loyal customers can enjoy

Swot and Pestel analysis Essay Example | Topics and Well Written Essays - 1000 words

Swot and Pestel analysis - Essay Example In this era of globalisation, the wine industry is experiencing a nascent stage of growth in Germany. As a result, it has emerged as one of the promising sectors offering high influence over the GDP of the economy of Germany (Koch & et. al., n.d.). SWOT Analysis Strength: Strong Brand Image Operating for Nine generations Development of FitzSecco passion fruit High quality of white wines Location of Fitz-Ritter Smaller Wine Bottles Champagne Production Sparkling Wines Weakness: Medium Size High price Opportunities: Small Museum Bacchus Boutique Sponsoring Of Charity Events, Concerts Threats: Varied New Vinters Globalisation Source: (Koch & et. al., n.d.). Fitz-Ritter is one of the renowned and leading wine estates of Germany operating efficiently since nine generations. Moreover, it also includes champagne production along with wine in order to extend its portfolio in the market among other competitors. Fitz-Ritter always attempted to offer more concentration over introducing new prod ucts namely ‘FitzSecco passion fruit’ for the young citizens in order to enhance customer dependency and loyalty, resulting in augmentation of its total sales. Furthermore, another significant factor, which enhanced its equity, has been regarded as the high quality of white wines being strongly preferred by the customers of German market (Koch & et. al., n.d.). ... However, Fitz-Ritter also possesses certain weaknesses such as the medium size and high price of its products, which may not be affordable for lower income groups (Koch & et. al., n.d.). The introduction of a small museum along with a gift shop named Bacchus boutique also facilitated Fitz-Ritter to augment its brand image and uniqueness in this era of competitiveness. In addition, sponsoring of varied charity events, concerts on wine estates and art galleries also provided the opportunity of enhancing the awareness of its target customers resulting in amplification of the demand of FitzSecco passion fruit along with its brand. Due to globalisation and industrialisation, wine industry became highly competitive, resulting in attraction of varied new young aged vinters. It declined the productivity as well as the prosperity of Fitz-Ritter leading to reduction of its position and attributes in the market imposing threats to the company (Koch & et. al., n.d.). PESTEL Analysis In order to eliminate the custom duties over export operations of wine products, Johann Firtz also led the protest campaign named Hambacher Fest by young vintners which significantly affected the business operations of Fitz-Ritter. It declined the brand image, revenues and value proposition of Fitz-Ritter in the market of Germany. Consequently, the movement was not preferred by the citizens of Germany and France and so the entire business operations, shifted into the market of United States. Besides, the restricted laws of the government of United States also acted in a negative way resulting in reduction of the total productivity of Fitz-Ritter. Moreover, health consciousness of the citizens also declined the profit margin and fidelity of Fitz-Ritter

Uno work in ukraine Essay Example for Free

Uno work in ukraine Essay Foreign relations of Ukraine have started to develop after it accepted the Declaration of State Sovereignty in 1990 and especially after the Act of Independence of Ukraine was announced in 1991. Ukraine was until then, although it had its own seat in the United Nations and was one of its 51 founding states, a part of the Union of Soviet Socialist Republics and thus unable to lead it own foreign policy. The Declaration of Independence became the cornerstone and starting point creation of the foreign policy guidelines that would meet the criteria of the present-day situation. The priorities of Ukrainian foreign policy have gone through a long process of alteration, mostly because of complex domestic and global situation. During the first years of its independence the main foreign policy goals were to win international recognition of Ukraine and establish relations with other countries, especially with the neighbouring former Soviet republics and with other European and worlds countries. Other vital parts of this process were aimed at securing national security of the country, assuring territorial integrity and extend the diplomatic network. One of the most significant steps in the construction of the legal basis of Ukraine’s international relations was the motion on the Basic Directions of the Foreign Policy of Ukraine, accepted by Ukrainian parliament in 1993. This document determined Ukraine’s key national interest in the foreign policy, defined its principles and guidelines and set the priorities of the foreign policy. The following priorities were outlined in the resolution: development of bilateral interstate relationships,  enlargement of the participation in the European co-operation, collaboration with the Commonwealth of Independent States (CIS) member states, participation in United Nations (UN) and other international organisations. In the following years (1994 1997) Ukraine started to gain status of being an influential state in the region of Central and Eastern Europe. A lot of efforts were made to involve the nation in general European processes. The foreign policy shifted its focus from establishing international relations to promoting Ukrainian national interests. As the integration process in Europe developed, so did the Ukraine’s interest in being involved in European and Euro-Atlantic structures. Ukraine took dynamic part in all the processes taking in both Europe and the world. Its first priority was to renew European identity which primarily meant its integration into European structures, especially in the European Union, in reinforcement of European and Atlantic partnerships, and active participation in local projects and mechanisms of cooperation. Ukraines involvement in European integration processes is necessary to get membership in the World Trade Organization (WTO). Europe orientated foreign policy doesn’t prevent Ukraine to develop bilateral collaboration with strategic partners, such as the Russian federation, the United States of America Azerbaijan, Uzbekistan and Poland. Further efforts will be invested in development of other bilateral agreements, especially with countries in Central and South Asia, the Asian-Pacific region and in the Middle East. Current prospects in Ukrainian foreign policy are slightly insecure. The domestic crisis which out broke after March 2006 parliamentary elections and resulted in the failure to re-establish the Orange Coalition has led to multi-vectorism in Ukraine’s foreign policy. Multi-vectorism is a result of different foreign policy expressed by the president and the prime minister. Regardless of the current problems, Ukraine’s foreign policy has shown much continui ty and it is likely to stay the case. Recent developments suggest that a consensus have emerged on all important foreign policy issues. Read more: http://www.ukessays.com/essays/european-studies/ukraine-policy-profile.php#ixzz3543GXFgu

The Process Heat Exchangers Engineering Essay

The Process Heat Exchangers Engineering Essay In this chapter, a full unit of heat exchanger will be designed including its chemical and mechanical design. A heat exchanger is a device built for efficient heat transfer between two fluids from one medium to another. The medium may be separated by a solid wall, so that the fluids never mix, or the fluids may never be in direct contact. Two fluids of different temperatures will flow through the heat exchanger. Heat exchangers are widely used in space heating, refrigeration, air conditioning, power plants, chemical plants, petrochemical plants, petroleum refineries, and natural gas processing. 3.1.1 Classification of Heat Exchanger Heat exchangers may be classified according to their flow arrangement. There are two main flow arrangements which are parallel-flow and counter-current-flow. In parallel-flow heat exchangers, the two fluids enter the exchanger at the same end, and travel in parallel to one another to the other side. In counter-flow heat exchangers the fluids enter the exchanger from opposite ends. Compared both flow arrangements, the counter current design is most efficient, in that it can transfer the most heat from the heat transfer medium. 3.1.2 Types of Heat Exchanger There are many types of heat exchanger in industry. The types chosen based on the function of the heat exchanger itself. Choosing the right heat exchanger requires knowledge of different type of heat exchanger as well as well as the environment in which the heat exchanger will operate. With sufficient knowledge of heat exchanger types and operating requirements, the best selection can be made in optimizing the process. Below, in Table 3.1 are list of types and functions of each heat exchanger. Table 3.1: Types and Functions of Heat Exchanger in Industry No. Types Functions 1. Double pipe heat exchanger The simplest type. Use for heating and cooling. 2. Shell and tube heat exchanger Used for all application. 3. Plate exchanger Use for heating and cooling. 4. Plate-fin exchanger Use for heating and cooling. 5. Spiral heat exchanger Use for heating and cooling. 6. Air cooled Cooler and condenser. 7. Direct contact Cooling and quenching. 8. Agitated vessels Use for heating and cooling. 9. Fired heaters Use for heating and cooling. Source: Chemical Engineering Design, R.K.Sinnott. 3.1.3 Selections of Heat Exchanger Typically in the manufacturing industry, several different types of heat exchangers are used for just the one process or system to derive the final product. In order to select an appropriate heat exchanger, one would firstly consider the design limitations for each heat exchanger type. Although cost is often the first criterion evaluated, there are several other important selection criteria which include: High/ Low pressure limits Thermal Performance Temperature ranges Product Mix (liquid/liquid, particulates or high-solids liquid) Pressure Drops across the exchanger Fluid flow capacity Clean-ability, maintenance and repair Materials required for construction Ability and ease of future expansion 3.2 BASIC PRINCIPLES OF DESIGN 3.2.1 Design Criteria for Process Heat Exchangers There are some criteria that a process heat exchanger must satisfy are easily enough stated if we confine ourselves to a certain process. The criteria include: The heat exchanger must meet the process requirements. This means that it must effect the desired change in thermal condition of the process stream within the allowable pressure drops. At the same time, it must continue doing this until the next scheduled shut down for maintenance. The heat exchanger must withstand the service conditions of the environment of the plant which includes the mechanical stresses of installation, startup, shutdown, normal operation, emergencies and maintenance. Besides, the heat exchanger must also resist corrosion by the environment, processes and streams. This is mainly a matter of choosing materials of construction, but mechanical design does have some effect. The heat exchanger must be maintainable, which usually implies choosing a configuration that permits cleaning and replacement. In order to do this, the limitations is the positioning the exchanger and providing clear space around it. Replacement usually involves tubes and other components that may be especially vulnerable to corrosion, erosion, or vibration. The cost of the heat exchanger should be consistent with requirements. Meaning of the cost here implement to the cost of installation. Operation cost and cost of lost production due to exchanger malfunction or unavailable should be considered earlier in the design. The limitations of the heat exchanger. Limitations are on length, diameter, weight and tube specifications due to plant requirements and process flow. 3.2.2 Structure of the Heat Exchanger The basic structure of heat exchanger is the same whether using hand design method or computer design method. The logical structure of the heat exchanger design procedure is shown in Figure 2.15. From the figure, clearer view and steps of designing a heat exchanger can be obtained. Figure 3.1: Basic Logical Structure of Heat Exchanger Design 3.3 CHEMICAL DESIGN 3.3.1 Problem Identification In designing a heat exchanger in production of 100, 000 metric tonnes/year of Acrylonitrile, there is only one heat exchanger exists. The function of it is to exchange the temperature between the stream from Reactor with the temperature from 125 °C to 25 °C and the stream comes from Reboiler 5 from 90 °C to 120 °C. 90.0 0C 125.0 0C 450.0 0C 120.0 0C Figure 3.2: Diagram of shell and tube heat exchanger 3.3.2 Determination of physical properties Table 3.2: Physical Properties of the tube side fluid (water) Properties Inlet Mean Outlet Temperature (0C) 90.0 105 120 Pressure (kPa) 70.139 120.82 198.52 Specific heat (kJ/kg0C) 4.204 4.224 4.249 Thermal conductivity (W/m0C) 0.1154 0.1198 0.1127 Density (kg/m3) 0.431 0.623 0.721 Viscosity (N sm-2) 3.145 x 10-4 2.677 x 10-4 2.321 x 10-4 Table 3.3: Physical Properties of shell fluid ( process fluid) Properties Average Temperature, Tave = 287.5 0C Pressure (kPa) 150 Specific heat (kJ/kg0C) 1.1 Thermal conductivity (W/m0C) 0.1553 Density (kg/m3) 1.255 Viscosity (N sm-2) 4.529 x 10-4 Only the thermal design will be carried out by using Kerns method. Since water is corrosive, so the tube-side is assign. Logarithmic mean temperature, Where, T1 = Inlet shell side fluid temperature T2 = Outlet shell side fluid temperature t1 = Inlet tube side fluid temperature t2 = Outlet tube side fluid temperature Thus, Log mean temperature = 131.4477 0C The true temperature difference is given by, Where, is the temperature correction factor From Figure 12.19, Chemical Engineering Design, Thus, 0C From Table 12.1(Sinnott 2005), we assume value of overall coefficient, U = 500.0 W/m2.oC. Heat Load: Heat transfer area, Where, Q = heat transferred per unit time (W) U = overall heat transfer coefficient,(W/m2.oC) Tm = the mean temperature difference (oC) Thus, = 190.126 m2 3.3.3 Tube-side coefficient Table 3.4: Dimension of Heat-Exchanger tubes Material Carbon Steel Outer diameter, Dto (mm) 50.8 Length of tube Lt (m) 5.0 Inner diameter, Dti (mm) 45.26 BWG number 12.0 Source: Transport Processes and Separation Process Principles, C. J. Geankoplis Heat transfer area of a tube, At = Ï€DoL = Ï€ (50.8 x 10-3) 5 = 0.798 m2 Number of tube, Nt = A/At = 190.126 / 0.798 = 238.25 = 239 tubes Cross sectional area of a tube = (Ï€Di2) / 4 = [Ï€ (45.26 x 10-3)2] 4 = 1.6089 x 10-3 m2 By using two passes; Total tube area, AT = (239 / 2) (1.6089 x 10-3) = 0.1923 m2 Mass velocity, Gs = flowrate / A = 29.96 / 0.1923 = 155.798 kg/m2.s Reynolds number, Re = [ Gsdi ] /  µ = [ 155.798 x 0.04526 ] / 4.529 x 10-4 = 1.557 x 10 4 Prandtl number, = [ 3.1731 x 155.798 ] / 0.1553 = 3183.275 Nusselt number, NuD = 0.027 Rea Prb [ µ /  µw]c = 0.027 (1.557 x 10 4)0.8 (3183.275)0.3 x 1 = 685.578 Stanton number, St = NuD / [Re(Pr)] = 685.578 / [1.557 x 10 4 x 3183.275 ] = 1.383 x 10-5 Heat Transfer factor, jh = St Pr0.67 = 1.383 x 10-5 ( 3138.275 )0.67 x 1 = 3.045 x 10-3 Tube-side heat transfer coefficient, hi = 2329.599 W/ m2.0C 3.3.4 Shell side coefficient 1.25 triangular pitch was chosen to calculate the bundle diameter. From table 12.4 (Sinnott 2005), constants value for 2 tube passes condition is K1 = 0.249 and n1 = 2.207 Bundle diameter, Db = Dto (Nt / K1) 1/n1 = 50.8 ( 239 / 0.249)1/2.207 = 1122.575 mm Pull-through floating head type was the best selection. From Figure 12.10 (Sinnott 2005), bundle diameter clearance is 95 mm. Shell diameter, Ds = 1122.575 + 95 = 1217.575 mm For selecting baffle spacing, the optimum spacing chosen is 0.2 times the shell diameters. Baffle spacing, B = 0.2 Ds = 0.2 (1217.575) = 243.515mm Tube pitch pt = 1.25 Do = 1.25 (50.8) = 63.5mm Cross-flow area, = 0.0593 m2 Mass velocity, Gs = Ws / As = 47.7672 / 0.0593 = 805.518 kg/m2.s Equivalent diameter, = 36.07 mm Shell-side heat transfer coefficient, ho Reynolds number, Re = [ Gsdi ] /  µ = [ 805.518 x 36.07 x 10-3 ] / 2.677 x 10-4 = 1.0854 x 10 5 Prandtl number, = [2.677 x 10-4 (2.4923 x 103) ] / 0.1553 = 4.296 Note that 45% baffle cut has been chosen, neglect the viscosity correction term. From Figure 12.29 (Sinnott, 2005), jh = 2.8 x 10-3 = 1640.892 W/m2.0C 3.3.5 Overall Coefficient Table 3.5: Dimensions in overall coefficient Material Carbon steel Thermal conductivity of carbon steel Kw = 45 W/m0C The fouling factor for cooling water hid 5000 W/m2.0C The fouling factor for aqueous salt solutions h0 =3000 W/m2.0C Source: Chemical Engineering Design, R.K.Sinnott. The relationship between overall coefficient and individual coefficients is given by: UO = 583.359 W/m2.0C Well approximately the initial estimate of 600 W/m2.0C, so design has adequate area for the duty required. 3.3.6 Tube-side Pressure Drop Reynolds number, = 14526.371 From Figure 12.24 of Chemical Engineering. (Vol. 6) Friction factor, jf = 0.045 Tube side pressure drop, Where, m = 0.25 for laminar flow, Re2100 Np = number of tube side passes = 23135.87 N/m2 = 2.3135 kPa (Acceptable) 3.3.7 Shell-side Pressure Drop Reynolds number, Re = 1.0854 x 10 5 From the Figure 12.30 (Sinnott 2005), Friction factor, jf = 0.024 Shell side pressure drop, = 64327.95 N/m2 = 64.328 kPa (Acceptable) 3.3.8 Summary of Calculation Type of shell and tube is carbon steel with Kw of 45 W/m.0C. While, specification of inside diameter is 45.27mm, outside diameter is 50.8mm and length of 5m. Table 3.6:Tube-side specification Parameter Results ΔTlm 131.4477 oC R 10.833 S 0.833 FT 0.93 ΔTm 122.246 oC Area, A 190.126 m2 Number of tubes, Nt 239 tubes Water linear velocity, ut 155.798 kg/m2.s Heat transfer coefficient, hi 2329.599 W/m2.0C Pressure drop, ΔPt 2.3135 kPa Table 3.7: Shell-side specification Parameter Results Bundle diameter, Db 1122.575 mm Shell diameter, Ds 1217.575 mm Baffle spacing, lB 243.515mm Shell area, As 0.0593 m2 Mass velocity, Gs 805.518 kg/m2.s Equivalent diameter, de 36.07 mm Shell coefficient, ho 1640.892 W/m2.0C Pressure drop, ΔPs 64.328 kPa Overall coefficients, U 583.359 W/m2.0C 3.4 MECHANICAL DESIGN OF HEAT EXCHANGER 3.4.1 Design Parameter Table 3.8: Design Parameter Parametre SI Unit English Unit Design temperature, TD 460 OC 860 OF Operating pressure, Po 300 kPa 43.51 psi Internal diameter, Di 1.217 m 47.913 ft Hemispherical length 0.65 m 2.13 ft Shells length 5.0 m 16.40 For this heat exchanger, the design pressure is 43.51 psi and above the atmosphere pressure (15 psi). Based on study, if Po > Patm (Pgage = Pabs Patm), the calculation for this heat exchanger is under internal pressure and the pressure that will used is, Po = Pabs Pgage = 43.51 psi 15 psi = 28.51 psi Calculation of design pressure for each part of heat exchanger by taking 10% safety factor: P1 = PO + PH = 28.51 + 0.433 (2.13) = 29.431 psi x 1.1 = 32.38 psi Because this heat exchanger design is horizontal, so the value P1 = P2 = P3 = 32.38 psi Thickness for each part of vessel: themispherical , t = tcylindrical : Circumferential; t = Longitudinal; t = For cylindrical, the highest thickness value calculated will be chosen. So, from the calculation above the thickness for cylindrical part is 0.0446 inch. Now by adding corrosion allowance, CA of 2 mm (0.07874 in.), themispherical = 0.0223in + 0.07874in = 0.101in tcylindrical = 0.0446in + 0.07874in = 0.12334in The material construction for this heat exchanger is carbon steel due to price and work in many applications. The highest value from these two types of wall thicknesses is 0.12334 inch, so the minimum wall thickness of this heat exchanger is 0.12334 inch (3.133mm). The nominal wall thickness for carbon steel at market is 0.1182 inch (3mm). Because of the nominal wall thickness is lower than the calculated we must take the calculated thickness t = 0.12334 inch (3.133 mm) as value of wall thickness. To calculate the maximum allowable working pressure for each part, MAWPpart , the thickness must subtract the corrosion allowance: t = 0.12334in 0.07874in = 0.0446in MAWPpart (hemispherical): P = MAWPpart (cylindrical): Circumferential; P = Longitudinal; P = The smallest value of pressure will be chosen. So, the internal pressure for cylindrical part is 32.383 psi. By subtracting the hydrostatic pressure, PH for each part, MAWPpart (hemispherical) = 64.812 psi (0.433)(2.13) = 63.889 psi =440.5 kPa MAWPpart (cylindrical) = 32.383 psi (0.433)(16.01) = 25.451 psi =175.478 kPa The smallest value of pressure is taken as MAWPpart which is 25.451psi. This value is the maximum allowable pressure for the whole vessel.

The appeal of Chopin’s The Story of An Hour

The appeal of Chopin’s The Story of An Hour, for me, is the its surprise ending. Its unexpectedness is further heightened by the quiet start of the plot and the gradual build-up towards what the reader thinks would be a predictable ending, only for the writer to take everything away from the heroine—and from the reader, too. Chopin uses Mrs. Mallard’s point of view so we experience the narrative through her. When the story opens, we learn of Mr.Mallard’s death but this fact is only hinted at. Later on, we join her in her grief, from the weeping â€Å"with sudden abandonment† to the intermittent sobbing that finally puts her sleep. When she awakes, Mrs. Mallard feels an emotion she could not place, and the reader begins to be as bewildered as she is. Chopin describes this yet unnamed sensation with metaphors such as stating how â€Å"her bosom rose and fell† until the exclamatory exclamation of â€Å"free, free, free! We exalt with her realiz ation and sympathize as she describes how she felt repressed in her marriage.However, this joy is short-lived when she sees her husband—alive after all. There is the suspenseful moment filling three paragraphs of her sister knocking hard upon the door. Chopin waits until the final paragraph to spring her surprise so that we also share in Mrs. Mallard’s shock and simply gape in disbelief when we read the final line describing how Mrs. Mallard â€Å"had died of heart disease—of joy that kills. †

The Process of Mongol Invasions of Japan

The Process of Mongol invasions of Japan As soon as Koryeo (Korean Dynasty) had succumbed to Mongolia, Kublai Khan sent ambassadors through the Koryeo Dynasty to convey the meaning of friendship in 1268. The Japanese government was encouraged to send a reply, but the Hojo clan who was shikken(ruler) refused and also didn’t send a reply. Later, the Mongol government sent an envoy many times, but the Japanese rejected the demands of Mongolia. Finally, the war started. There were three invasions of Mongolia.The First invasion was in November 1274, the Mongolian troops first invaded Japan with Koryeo of Kimbanggyeog leading the Korean Dynasty army and Yuan Holdon leading the Mongol army, using 900 vessels ships and 40,000 military soldiers. They started to invade Happo ( , Masan) and then Tsushima(? ?) in October 5th. After 9 days, they raided Iquique(? ?) and arrived at the Hakata seaport of Kyushu. Finally, they annihilated Hirado (? ) Â · Takashi ? Do (? ?)and then retreated t he next day.There is a claim that they retreated because of a storm, but it wasn’t the season for storms or seasonal typhoons from cyclones. Additionally, the Japanese don’t have the record to support this. It’s common opinion that the Mongol government had the purpose of establishing a country with military action in Japan. The second invasion was in 1281. Koryeo troops led the second invasion. They failed completely because of a typhoon. The defeat was caused by lack of awareness about the Japanese climate of the maritime.There were other reasons. The first reason was stiff resistance from the Japanese Kamakura Shogunate who held the regime at the time. Secondly, Mongolia couldn’t focus on the conquest of Japan because of Mongolian domestic matters. Ultimately, the Mongolians prepared the third conquest, but there was a rebellion in the Song Dynasty. That’s why the invasion was cancelled. The results of Mongol invasions in Japan In Mongolia, The Japanese conquest was a good strategy from the Mongol government to develop.During the process of the development and growth of the Mongol empire, Kublai Khan’s ruling was an important turning point. It was an opportunity to convert from a nomadic country to an agricultural country and also from undeveloped grasslands to autonomous central country. Even if the Mongols didn’t start the Japanese conquest, Mongolia was powerful enough and was equipped to become a world empire but the plan failed. If the Mongolians had success in the Japanese invasion, it would have built the most powerful universal empire in the history of mankind but it didn’t happen.They failed twice and the third time they abandoned the invasion in the middle of the Japanese occupation . It caused them to feel pressure in the administration and the effect was division in the country. The gigantic empire disappeared just after 70 years. The Japanese had the biggest national crisis because of the large-scale invasion of the Mongol-koryeo troops. In Japan, the first Japanese occupation is called the ‘Inverse of Moon young’ and the second one is called ‘Inverse of Red Face’.Japan succeeded in protecting the country during the first two big invasions but the economy suffered a vast blow. The Japanese could control the warriors by mobilizing them across the country during the Mongolian invasions. However, they suffered economic damages because of the huge military. On the one hand, they were affected in emotional aspects. First, they prayed for victory. This showed people’s shock and anxiety for the second invasion. Secondly, the ‘kamikaje’ word appeared. Kamikaje means god and wind. This reminds the Japanese that thanks to a typhoon they were saved.

How to answer Walk me through your resume in a job interview

How to answer Walk me through your resume in a job interview You’re all excited for your interview and then you get the dreaded question. â€Å"Walk me through your resume,† the interviewer says. â€Å"Walk through it yourself!† you think. â€Å"Can’t you read?† We kid- of course, you can only think this. (Please, only think it!) It may seem like a ridiculous question, but think of it instead as an opportunity. You have a captive audience here to really fill in any holes or gaps on your resume and talk your interviewer through the bullet points while fleshing them out with the details they deserve! Take care, however, that you don’t let your own overconfidence trip you up. Be prepared to give a succinct, non-rambling answer. Also be prepared to have a smooth way of glossing over positions you put on for necessary padding in the hopes that the recruiter wouldn’t read those sections too carefully.Here are a few good tips for preparing to answer this common question.1. Be brief and articulate.Conci sion is your friend. Don’t just wing this answer- practice it with all your other interview prep answers. Remember, you’re probably also being evaluated here on your communication skills. Cut out the â€Å"um†s and set your resume in the context/tone you want without droning on too long about yourself. And whatever you do, don’t let yourself get bogged down with irrelevant extra details that have nothing to do with why your past will make you an ideal candidate for the job you want.2. Keep your eye on the prize.Your job in this answer is to put everything in your resume in the context of the job you’re applying for. Stick to the script! When you’re talking about your background, mine it for little gems that will show just how perfect your history makes you for this position. Explain your career so far in such a way that your interviewer will see how it perfect it makes you for the open job.3. Explain yourself.Some questions undoubtedly come up with any resume, no matter how bulletproof. Try to anticipate any questions or concerns your interviewer might have and have answers prepared. Explain your motivations and what went into the various decisions you’ve made along the way. Try to frame every negative or challenge into a positive. Show yourself to be scrappy and problem-solving when you go over any gaps and potential red flags, as well.4. Anticipate what they want to hear.As much as you want to practice a perfect answer, make sure to also think on the fly. Try to suss out what your interviewer is actually after and incorporate that into your answer. Tailor or fix what you’re about to say what you know they’re after.5. Stay classy.Paint yourself as the best person for the job, but don’t just shine yourself in best, brightest light and trash everyone else. Stay honest. Don’t throw anyone under any buses. Take responsibility for yourself and your actions, and don’t exaggerate you r successes while sweeping all weaknesses under the rug (even though you shouldn’t dwell too long on those)- you just won’t seem believable.6. Think big.When in doubt, frame your answer to be about how  this job is the perfect next step on your career path and how everything in the past has led up to this position.  Don’t forget to show the big picture and highlight your passion and enthusiasm for the position, in addition to your expertise.  Back everything you say up with actual bullet points on your resume. Stick to the script, show off without being too braggy, and the job should be yours!

Definition and Discussion of Enlightenment Rhetoric

Definition and Discussion of Enlightenment Rhetoric The expression  Enlightenment rhetoric refers to the study and practice of rhetoric from the mid-seventeenth century to the early part of the nineteenth century. Influential rhetorical works from this period include George Campbells Philosophy of Rhetoric, first published in 1776, and Hugh Blairs Lectures on Rhetoric and Belles Lettres, first published in 1783. George Campbell, who lived from 1719 to 1796, was a Scottish minister, theologian, and philosopher of rhetoric. Hugh Blair, who lived from 1718 to 1800, was a Scottish minister, teacher, editor, and rhetorician. Campbell and Blair are just two of the many important figures associated with the Scottish Enlightenment. As Winifred Bryan Horner notes in the Encyclopedia of Rhetoric and Composition, Scottish rhetoric in the 18th century was broadly influential, especially in the formation of the North American composition course as well as in the development of 19th- and 20th-century rhetorical theory and pedagogy. 18th-Century Era of Enlightenment Rhetoric Essays written on rhetoric and style in the 1700s include Of Eloquence by Oliver Goldsmith and Of Simplicity and Refinement in Writing by David Hume. On Conciseness of Style in Writing and Conversation by Vicesimus Knox and Samuel Johnson on the Bugbear Style were also produced during this era. Periods of Western Rhetoric Western rhetoric can be divided into distinct categories: classical rhetoric, medieval rhetoric, Renaissance rhetoric, 19th-century rhetoric, and new rhetoric(s). Bacon and Locke Thomas P. Miller, Eighteenth-Century Rhetoric British advocates of enlightenment grudgingly accepted that while logic could inform the reason, rhetoric was necessary to rouse the will to action. As propounded in [Francis] Bacons Advancement of Learning (1605), this model of the mental faculties established the general frame of reference for efforts to define rhetoric according to the workings of the individual consciousness...Like such successors as [John] Locke, Bacon was a practicing rhetor active in the politics of his time, and his practical experience led him to recognize that rhetoric was an inevitable part of civic life. Although Lockes Essay Concerning Human Understanding (1690) criticized rhetoric for exploiting the artifices of language to promote factional divisions, Locke himself had lectured on rhetoric at Oxford in 1663, responding to the popular interest in the powers of persuasion that has overcome philosophical reservations about rhetoric in periods of political change. Overview of Rhetoric in the Enlightenment Patricia Bizzell and Bruce Herzberg, The Rhetorical Tradition: Readings From Classic Times to the Present Toward the end of the 17th century, traditional rhetoric came to be closely associated with the genres of history, poetry, and literary criticism, the so-called belles lettres - a connection that persisted well into the 19th century. Before the end of the 17th century, however, traditional rhetoric came under attack by adherents of the new science, who claimed that rhetoric obscured the truth by encouraging the use of ornamented rather than plain, direct language...The call for a plain style, taken up by church leaders and influential writers, made perspicuity, or clarity, a watchword in discussions of ideal style during the ensuing centuries. An even more profound and direct influence on rhetoric at the beginning of the 17th century was Francis Bacons theory of psychology...It was not until the middle of the 18th century, however, that a complete psychological or epistemological theory of rhetoric arose, one that focused on appealing to the mental faculties in order to persuade...the elocution movement, which focused on delivery, began early in the 18th century and lasted through the 19th. Lord Chesterfield on the Art of Speaking Lord Chesterfield (Philip Dormer Stanhope), letter to his son Let us return to oratory, or the art of speaking well; which should never be entirely out of your thoughts, since it is so useful in every part of life, and so absolutely necessary in most. A man can make no figure without it, in parliament, in the church, or in the law; and even in common conversation, a man that has acquired an easy and habitual eloquence, who speaks properly and accurately, will have a great advantage over those who speak incorrectly and inelegantly. The business of oratory, as I have told you before, is to persuade people; and you easily feel, that to please people is a great step towards persuading them. You must then, consequently, be sensible how advantageous it is for a man, who speaks in public, whether it be in parliament, in the pulpit, or at the bar (that is, in the courts of law), to please his hearers so much as to gain their attention; which he can never do without the help of oratory. It is not enough to speak the language he speaks in, in its utmost purity, and according to the rules of grammar, but he must speak it elegantly, that is, he must choose the best and most expressive words, and put them in the best order. He should likewise adorn what he says by proper metaphors, similes, and other figures of rhetoric; and he should enliven it, if he can, by quick and sprightly turns of wit. Philosophy of Rhetoric Jeffrey M. Suderman, Orthodoxy and Enlightenment: George Campbell in the Eighteenth Century Modern rhetoricians agree that [George Campbells] Philosophy of Rhetoric pointed the way to the new country, in which the study of human nature would become the foundation of the oratorical arts. A leading historian of British rhetoric has called this work the most important rhetorical text to emerge from the 18th century, and a considerable number of dissertations and articles in specialized journals have eked out the details of Campbells contribution to modern rhetorical theory. Alexander Broadie, The Scottish Enlightenment Reader One cannot go far into rhetoric without encountering the concept of a faculty of the mind, for in any rhetorical exercise the faculties of intellect, imagination, emotion (or passion), and will are exercised. It is therefore natural that George Campbell attends to them in The Philosophy of Rhetoric. These four faculties are appropriately ordered in the above way in rhetorical studies, for the orator first has an idea, whose location is the intellect. By an act of imagination, the idea is then expressed in suitable words. These words produce a response in the form of an emotion in the audience, and the emotion inclines the audience to will the acts that the orator has in mind for them. Arthur E. Walzer, George Campbell: Rhetoric in the Age of Enlightenment While scholars have attended to the 18th-century influences on Campbells work, Campbells debt to the ancient rhetoricians has received less attention. Campbell learned a great deal from the rhetorical tradition and is very much a product of it. Quintilians Institutes of Oratory is the most comprehensive embodiment of classical rhetoric ever written, and Campbell apparently regarded this work with a respect that bordered on reverence. Although the Philosophy of Rhetoric is often presented as paradigmatic of a new rhetoric, Campbell did not intend to challenge Quintilian. Quite the contrary: he sees his work as confirmation of Quintilians view, believing that the psychological insights of 18th-century empiricism would only deepen our appreciation for the classical rhetorical tradition. Lectures on Rhetoric and Belles Lettres James A. Herrick, The History and Theory of Rhetoric [Hugh] Blair defines style as the peculiar manner in which a man expresses his conceptions, by means of language. Thus, style is for Blair a very broad category of concern. Moreover, style is related to ones manner of thinking. Thus, when we are examining an authors composition, it is, in many cases, extremely difficult to separate the style from the sentiment. Blair was apparently of the opinion, then, that ones style - ones manner of linguistic expression - provided evidence of how one thought. Practical matters..are at the heart of the study of style for Blair. Rhetoric seeks to make a point persuasively. Thus, rhetorical style must attract an audience and present a case clearly. Of perspicuity, or clarity, Blair writes that there is no concern more central to style. After all, if clarity is lacking in a message, all is lost. Claiming that your subject is difficult is no excuse for lack of clarity, according to Blair: if you cant explain a difficult subject clearly, you probably dont understand it...Much of Blairs counsel to his young readers includes such reminders as any words, which do not add some importance to the meaning of a sentence, always spoil it. Winifred Bryan Horner, Eighteenth-Century Rhetoric Blairs Lectures on Rhetoric and Belles Lettres was adopted at Brown in 1783, at Yale in 1785, at Harvard in 1788, and by the end of the century was the standard text at most American colleges...Blairs concept of taste, an important doctrine of the 18th century, was adopted worldwide in the English-speaking countries. Taste was considered an inborn quality that could be improved through cultivation and study. This concept found a ready acceptance, particularly in the provinces of Scotland and North America, where improvement became a basic tenet, and beauty and good were closely connected. The study of English literature spread as rhetoric turned from a generative to an interpretive study. Finally, rhetoric and criticism became synonymous, and both became sciences with English literature as the observable physical data. Sources Bacon, Francis. Advancement of Learning. Paperback, CreateSpace Independent Publishing Platform, September 11, 2017. Bizzell, Patricia. The Rhetorical Tradition: Readings From Classic Times to the Present. Bruce Herzberg, Second Printing Edition, Bedford/St. Martins, February 1990. Blair, Hugh. Lectures on Rhetoric and Belles Lettres, Paperback, BiblioBazaar, July 10, 2009. Broadie, Alexander. The Scottish Enlightenment Reader. Canongate Classic, Paperback, Canongate UK, June 1, 1999. Campbell, George. The Philosophy of Rhetoric, Paperback, University of Michigan Library, January 1, 1838. Goldsmith, Oliver. The Bee: A Collection of Essays. Kindle Edition, HardPress, July 10, 2018. Herrick, James A. The History and Theory of Rhetoric. 6th Edition, Routledge, September 28, 2017. Hume, David. Essay XX: of Simplicity and Refinement in Writing. Online Library of Liberty, 2019. Johnson, Samuel. The Works of Samuel Johnson, LL. D.: An essay on the life and genius of Samuel Johnson. G. Dearborn, 1837. Knox, Vicesimus. Knoxs Essays, Volume 22. J.F. Dove, 1827. Sloane, Thomas O. (Editor). Encyclopedia of Rhetoric. v. 1, Oxford University Press, August 2, 2001. Stanhope, Philip Dormer Earl of Chesterfield. Letters to His Son: On the Fine Art of Becoming a Man of the World and a Gentleman. Volume 2, M. W. Dunne, 1901. Suderman, Jeffrey M. Orthodoxy and Enlightenment: George Campbell in the Eighteenth Century. McGill-Queens Studies in the Hist of Id, 1st Edition, McGill-Queens University Press, October 16, 2001. Various. Encyclopedia of Rhetoric and Composition. Theresa Jarnagin Enos (Editor), 1st Edition, Routledge, March 19, 2010. Various. Encyclopedia of Rhetoric and Composition: Communication from Ancient Times to the Information Age. Theresa Jarnagin Enos (Editor), 1st Edition, Routledge, March 19, 2010. Walzer, Arthur E. George Campbell: Rhetoric in the Age of Enlightenment. Rhetoric in the Modern Era, Southern Illinois University Press, October 10, 2002.

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Weeks v. united states - Coursework Example In the case of Weeks v. United States, Weeks’ property was searched by the state agents without a lawful warrant and some papers and other possessions were seized by the agents which led to the conclusion that the defendant was an illegal gambler. However, this constituted a violation of the Fourth Amendment because otherwise the evidence that was collected in this unlawful manner should not have been used in the federal criminal prosecution. By the 20th century however, the Court came to recognize the fact that the Fourth Amendment was of no use if this kind of a search and seizure practice was carried on without any warrant. This Amendment carries a certain amount of protection that is to be given to citizens and states that evidence produced in such an unlawful manner cannot be held against the defendant. Thus, the Court had finally decided the case to be in favour of Weeks and classifies a certain right of privacy to be provided to other citizens under the same category in order to abide by the guidelines set in the Fourth

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Investment Strategy and Portfolio Management - Essay Example The types of investment are real investment, fixed assets, or financial investments, basically agreement made on contracts such as securities, bonds among others. The purchase of financial investments leads to the purchase of real investments. Financial investments also give the buyer a realm into a look in real investments. Having a great financial investment requires the buyer and portfolio manager to have great investment philosophies.An investment philosophy is thinking about how markets work, varieties that affect stocks in the market and the varieties of assumptions that investors do make. Investment strategies are basically designed to make use of this mistakes that are made by investors to make a gain out of them. There are several factors that affect the investments assumptions made by investors. They include: Human behavioral traits, human beings do behave and coordinate different as nature has put it. But while this is so, most human beings have a tendency to believe in majority or crowds being right especially on decisions. Thus for every momentum investor, who tends to invest in places where he sees crowds investing owing to the believe that they could be right in the terms of gain being brought about by the investment, there tends to be another person who doesn’t believe in the same, contradictory. The contradict ends up investing in other securities rather than the common one. while this in the short run tends to be a total failure for the contradict in the long term the prices end to push and pull each other due to market factors and do variant in the long term bringing benefits to both. Markets efficiency is another factor to consider for a great investment policy. Markets are an organized system that collects buyers and sellers in one place for the exchange of goods and services. Securities are traded in various types of markets. Some do have a physical location while others do