What Is a Diesel Fuel Cetane Rating

Cetane is a colorless, liquid hydrocarbon (a molecule from the alkane series) that ignites easily under compression. For this reason, it was given a base rating of 100  and is used as the  standard measure of the performance of compression ignition fuels, such as diesel fuel and biodiesel. All the sundry hydrocarbon constituents of diesel fuel are measured and indexed to cetanes base 100 rating. What Is Cetane Number? Similar to the octane number rating that is applied to gasoline to rate its ignition stability, cetane number is the rating assigned to diesel fuel to rate its combustion quality. While gasolines octane number signifies its ability to resist auto-ignition (also referred to as pre-ignition, knocking, pinging, or detonation), diesels cetane number is a measure of the fuels delay of ignition time (the amount of time between the injection of fuel into the combustion chamber and the actual start of combustion of the fuel charge). Because diesels rely on compression ignition (no spark), the fuel must be able to auto-ignite — and generally, the quicker the better. A higher cetane number means a shorter ignition delay time and more complete combustion of the fuel charge in the combustion chamber. This, of course, translates into a smoother running, better performing engine with more power and fewer harmful emissions. How Does the Cetane Number Test Work? The process for determining true cetane rating requires the use of precisely controlled test engines and procedures or fuel analysis with exacting instruments and conditions. Because using dedicated engines and processes or instruments for real fuel tests is painstaking, expensive and time-consuming, many diesel fuel formulators use a calculated method to determine cetane numbers. Two common tests are ASTM D976 and ASTM 4737. These two tests use fuel density and boiling/evaporation points to derive cetane ratings. How Does Cetane Number Affect Engine Performance? Just as there is no benefit to using gasoline with an octane rating higher than recommended for a specific engine by its manufacturer, using diesel fuel with a higher cetane rating than is required for a particular diesel engine design yields no bonuses. Cetane number requirements depend mainly on engine design, size, ​speed of operation, and load variations — and to a slightly lesser extent, atmospheric conditions. Conversely, running a diesel engine on fuel with a lower than recommended cetane number can result in rough operation (noise and vibration), low power output, excessive deposits and wear, and hard starting.​ Cetane Numbers of Various Diesel Fuels Normal modern highway diesels run best with a fuel rated between 45 and 55. Following is a list  of cetane numbers varying grades and types of compression ignition diesel fuels: Regular diesel--48Premium diesel--55Biodiesel (B100)--55Biodiesel blend (B20)--50Synthetic diesel--55 A label should be affixed to the pump that states both the fuel type and cetane number. Its important to find a station that dispenses fuel of the cetane number recommended by the vehicle manufacturer.

A Research Study About The Stereotype Threat Effect On...

Furthermore, sports can serve as a tool to build and boost confidence. In a research study about the stereotype threat effect on African- American college students it showed that students either respond to the stereotype threat with a performance reduction or with disidentification and concentration on activities in which they are already successful (Aronson, Fried, Good, 2000). Based on the findings of DeMeulenaere’s study on four individuals over a timespan of two years, students tend to be more open to challenging activities, if they have a solid foundation in one specific area that gives them pride and self-confidence (DeMeulenaere, 2010). This sample size is not really big and might probably consist of many confounding variables, but the interviews with the influential people around these studied individuals, such as the peers, family, teachers, and coaches, show many different and consistent perspectives. Besides, through sports many people can be reached and get attached to the school in a different way then with academics. Nowadays, students are less and less interested in learning new things and gaining knowledge, which is supposed to be the most powerful weapon. This phenomenon is shown in the high school dropout rates and less extracurricular participation during high school (Whitley, 1999). For many students physical activation is a more relatable field and helps them in developing confidence and a pride for and by the school (DeMeulenaere, 2010). The developedShow MoreRelatedStereotype Threats Of College Students1417 Words   |  6 Pages Stereotype Threats of Undergraduates Chassydi Turner Education Psychology Dr. Sandra Hull April 23, 2015 â€Æ' Stereotype produces numerous situations when most are negative in nature. Many studies have been extended since first reported by Steele and Aaronson in earlier years. The term stereotype threat is a threat that diminishes performances, beginning from a negative stereotype about one’s own social group (Steele, 1997; Steele Aaronson 1995). Stating that stereotypes can harm performancesRead MoreStereotypes And Stereotypes Of African American Students Essay1148 Words   |  5 PagesStereotypes can be defined as schemas applied to a group of people sharing common physical, biological or racial characteristics. Focusing on education, African American students had consistently been negatively stereotyped about their intellectual abilities. Research indicates that racial stereotypes negatively affect African American students’ academic performance. This correlation, though, is clearest among salient African American students, implying that psychological factors may result fr omRead MoreAnalysis Of Claude Steele s Influence On Minority Students1587 Words   |  7 Pagesself-regulation and the academic under-achievement of minority students and women. Steele explained the academic under achievement of minority students with stereotype threat which is when racial and gender stereotypes can affect minority and womens grades, test scores, and academic identity.(Lasnier, 2009).For many years’ stereotype threat has affected minority students learning making it hard to focus on school because of their environment putting stereotypes in their heads such as already having in your mindRead MoreReview of Social Psychology Book by Claude Steele1468 Words   |  6 PagesClaude Steele, in his book â€Å"Whistling Vivaldi,† sheds new light on how pervasive stereotypes can influence individual’s behavior and academic performance, and how they perpetuate in different social groups. Stereotype threat, as defined by Steele, is â€Å"being at risk of confirming, as self-characteristic, a negative stereotype about a social group one identifies with.† (Steele, 1997) It is a general phenomenon – standard predicament of life – that springs from intersubjectivity. (p.5) We tendRead MoreStudent Achievement Essay1560 Words   |  7 PagesAchievement Gap, Kati Haycock, the Director of the Education Trust at the American Association for Higher Education, states Between 1970 and 1988, the achievement gap between African American and white students was cut in half, and the gap separating Latinos and whites declined by one-third. That progress came to a halt around 1988, however, and since that time, the gaps have widened (6). As a result, people are doing studies and have come up with several theories that exist on how to address theRead More Racial and Cultural Test Bias, Stereotype Threat and Their Implications3799 Words   |  16 PagesRacial and Cultural Test Bias, Stereotype Threat and Their Implications A substantial amount of educational and psychological research has consistently demonstrated that African American students underperform academically relative to White students. For example, they tend to receive lower grades in school (e.g., Demo Parker, 1987; Simmons, Brown, Bush, Blyth, 1978), score lower on standardized tests of intellectual ability (e.g., Bachman, 1970; Herring, 1989; Reyes Stanic, 1988; SimmonsRead MoreA Research Proposal For Non Asian Minority Groups2133 Words   |  9 Pages 1 KirtmanNPSY7103-6 NORTHCENTRAL UNIVERSITY ASSIGNMENT COVER SHEET Student: Nisaa Kirtman PSY7103 ACKERMAN RESEARCH METHODS 6 (MINI QUALITATIVE RESEARCH PROPOSAL) Faculty Use Only Qualitative Mini-Research Proposal: Stereotype Threat As demographic changes reshape the STEM talent pool in the US, the nation will need to draw more on racial and ethnic groups that have been traditionally marginalized in order to maintain itsRead MoreA Study of Factors Contributing to the Lack of Success and Participation of African American in Males in Advance Placement Classes1538 Words   |  7 PagesAbstract The purpose of this research brief is to offer a brief review of those factors that contribute to the academic achievement gap between African American males. A sample of 25 8th grade, African American, male students from Dent Middle School will be identifyied as participates for the research. Although there has been research written about the achievement gap between African American and their counterparts, the literature is limited regarding strategies tailored specifically to addressRead MoreRacial Identity Of African American Adolescents821 Words   |  4 Pagesanother big contributor to the degradation of African American’s youth mental health, as a weak racial identity results in poorly mishandled ways of coping with racism and stress. African American students as early as middle school engage in introspection of their racial identity, where they begin to discover who they are and the negative stereotypes surrounding their identity (Cheryl Holcomb-McCoy, 2007, p.256). Th e results of a study of 297 African American adolescents by McCreary, Slavin, and BerryRead MoreStereotyping And The Health Care System1261 Words   |  6 Pagesbeyond the moment when it happens? A study by science news in 2010 showed that stereotyping does have a lasting effect on that person, (Science News, 2010). People do not forget and this can cause damage in their lives and their future decisions. For example, my cousin became pregnant by an African American as a teenager. She was shunned by certain people in my family, including her father. My grandmother without thinking or meaning to offend the only African American in my small home town told the man

Identify the Functional Strategies That Mcdonald Pursue free essay sample

Identify the functional strategies that McDonald pursue to establish its strong foothold and make India as an export base for cheese, lettuce and other product. Ans: First, we would like to define what does â€Å"Strategy† mean? Strategy is a plan or course of action or set of decision rules making a pattern and creating a commong thread. And Functional Strategy is the approach a functional area take to achieve corporate ans business unit objectives and strategies by maximizing resource productivity.McDonald’s operating and expanding its business in India with using various functional strategies. They have very successfully set up a first-world standard supply chain and have done an excellent job in setting up a restaurant system with vegetarian/meat areas distinctly differentiated. Overall, they have been very responsive to the Indian environment. In terms of funtional strategy theory McDonald focuses on its marketing strategies as well as its procduction function to establish a strong foothold in indian market. We will write a custom essay sample on Identify the Functional Strategies That Mcdonald Pursue or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page nder functional strategy, McDonald focuses on the following areas: *Marketing Strategy *R D Strategy *Finacial Strategy *Information Management Strategy **Maketing Strategy: Marketing strategy deals with pricing, selling and distributing a product. Here McDonald’s initial focus area wasthe people of relatively high income in Delhi and Mumbai. Then it set up its pricing and advertising policy to attract this area. ** RDstrategy: RD deals with two very important: 1) Product Innovation and 2) Production Improvement.The starting point for McDonalds India was to change Indian consumers perceptions, which associated it with being foreign, American, not knowing what to expect and discomfort with the new or different. McDonalds wanted to position itself as Indian and a promoter of family values and culture, as well as being comfortable and easy. Simultaneously, the brand wanted to communicate that, operationally, it was committed to maintaining a quality service, cleanliness and offering value for money.

The Japanese Katana and The Espada Ropera Essay Example

The Japanese Katana and The Espada Ropera Essay There have been many legends about the Japanese sword known as a Katana. This sword is considered to be the best made, the best in combat and the best sword for anyone to wield in the field of battle. Although I agree that this sword is quite legendary and amazing, I have found another sword that in comparison is an even more superior weapon. This sword is known as the Espada Ropera (Spanish rapier) and was used in the 1600s, during the same period as its competitor the Katana. The reasons why the Espada Ropera is superior to the katana is that it has better craftsmanship, more combat advantages and more availability to the common soldier so that he may wield it on the battlefield without the problem of paying a large sum. Swords do not become legends from their service, but rather from their creation, for blades such as the Espada Ropera and the Katana were both works of art and expert craftsmanship. The Katana was forged by using high-grade steel in a blast furnace which was then folded onto one edge over and over again to make it as sharp as possible while the other edge was layered with cobalt so that it would not rust since it was not to be used in combat. The Katana also had a curved blade so that it could be faster in combat and on the draw out of the scabbard. Lastly, the Katana itself with the blade and all weighed at about 2.86 pounds. Although this may sound like the superior blade, it is not the case. The Espada Ropera was forged with high-grade steel, which was then heated and pounded into a thin double-edged blade as sharp as a shaving razor. The blade itself was long and straight and had a bit of flex so that it could slightly bend with the strike, causing it to have an even more deadly strike. Also, the entire sword only weighed 2. 2 pounds which is, although not by much, is lighter than the Katana giving it a slight edge in speed. We will write a custom essay sample on The Japanese Katana and The Espada Ropera specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on The Japanese Katana and The Espada Ropera specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on The Japanese Katana and The Espada Ropera specifically for you FOR ONLY $16.38 $13.9/page Hire Writer It is said that the Katana’s greatest combat advantage is that the curve in the blad

The Benetton group

The Benetton group Founded in 1965, the Benetton Group started with limited resources that necessitated the strategy that ultimately resulted in rapid international growth. Since the beginning, Benetton concentrated on devoting its skills to the design and manufacture of quality clothing instead of providing direct consumer retailing. Benetton established a competitive advantage by establishing its brand as the best-known Italian apparel manufacturer, concentrating mainly on fashion-conscious young consumers from their mid teens through mid thirties.Since almost 85% of its production is subcontracted to approximately 500 contractors both in Italy and abroad, and most retail stores are independently owned, Benetton does not have direct managerial control over production and sales operations. Additionally, Benetton's in-house operations and manufacturing partners are largely centralized in Italy (as much as 82% of core manufactured products were produced in Italy), making them susceptible to exchange rat e fluctuations.On the retail side, Benetton utilizes contracted agents working on commission to establish and support retail outlets.BenettonThe entrepreneurial agency system helped Benetton to rapidly expand their retail network, and thus, push more Benetton products. However, the agency system does not provide the operational support to retail stores found in centrally controlled retail competitors, like The Gap, and cannot enforce any commonality in layout, stocking, or dÂÆ'Â ©cor from store to store. Additionally, the compensation structure for agents only encourages sales. There is little direct incentive to share best practices with other agents in different territories, to share business intelligence with Benetton, or to devote resources to helping build the Benetton brands. In other words, the agency system encourages the 'free-rider' effect.It is recommended that Benetton alter its strategy in four steps to defend its core markets, and to prepare itself for future global expansion into new markets. In other words, Benetton needs to achieve globalization for its long-term growth, and...

Betty White

Her career started in the early 1940s with a modeling job. She also worked on a few radio shows including Blondie, The Great Gildersleeve, and This Is Your FBI and later, her own radio program name, The Betty White Show. In 1949 she debuted on television when she appeared with Al Jarvis on Hollywood on Television, she later hosted it on her own when Jarvis left. From 1952 to about 1977 she appeared on several television shows including Life With Elizabeth, Date With the Angels, Password, What’s My Line? , To Tell the Truth, I’ve Got A Secret, Match Game, The Mary Tyler Moore Show, and Pyramid. In 1977 she was given her own sitcom on CBS called The Betty White Show. (Not to be confused with her radio show with the same name. ) In 1987 she scored her second signature role of the St. Olaf, MN – native Rose Nylund, on The Golden Girls. The show was centered on four divorced or widowed women in their ‘Golden years’ that share a home in Miami. Although Betty has no children, she has been married three times. The first in 1945 to Dick Barker, a US Army Air Corps Pilot. This marriage was short-lived, only one year. The second to Lane Allen, a Hollywood agent, which only lasted two years also ending in divorce. On June 14, 1963 she married television host and personality, Allen Ludden. He proposed to Betty at least twice be fore she accepted. Allen died of stomach cancer on June 9, 1981. She hasn’t remarried since his death. Betty has won six Emmy Awards, three American Comedy Awards (including a Lifetime Achievement Award in 1990. ), and two Viewer’s For Quality Television Awards. She was inducted into the Television Hall of Fame and has a star on the Hollywood Walk of Fame. On January 23, 2010 at the Screen Actor’s Gild Awards, she was awarded, by Sandra Bullock, the Life Achievement Award. She is also a pet enthusiast and animal health advocate who works with a number of animal organization such as the Los Angeles Zoo Commission, the Morris Animal Foundation, and Actors Others for Animals. Betty is the president of the Morris Animal Foundation where she has served as a trustee of the organization since 1971. And she donated $100,000 to the Los Angeles Zoo in April 2008 alone. She was also just on Saturday Night Live over the weekend, and it was hilarious! I was laughing so hard.. So, having said all that. I’d say she is the coolest eighty-eight year old you could probabaly ever get a chance to meet. I hope she lives forever! Betty White Her career started in the early 1940s with a modeling job. She also worked on a few radio shows including Blondie, The Great Gildersleeve, and This Is Your FBI and later, her own radio program name, The Betty White Show. In 1949 she debuted on television when she appeared with Al Jarvis on Hollywood on Television, she later hosted it on her own when Jarvis left. From 1952 to about 1977 she appeared on several television shows including Life With Elizabeth, Date With the Angels, Password, What’s My Line? , To Tell the Truth, I’ve Got A Secret, Match Game, The Mary Tyler Moore Show, and Pyramid. In 1977 she was given her own sitcom on CBS called The Betty White Show. (Not to be confused with her radio show with the same name. ) In 1987 she scored her second signature role of the St. Olaf, MN – native Rose Nylund, on The Golden Girls. The show was centered on four divorced or widowed women in their ‘Golden years’ that share a home in Miami. Although Betty has no children, she has been married three times. The first in 1945 to Dick Barker, a US Army Air Corps Pilot. This marriage was short-lived, only one year. The second to Lane Allen, a Hollywood agent, which only lasted two years also ending in divorce. On June 14, 1963 she married television host and personality, Allen Ludden. He proposed to Betty at least twice be fore she accepted. Allen died of stomach cancer on June 9, 1981. She hasn’t remarried since his death. Betty has won six Emmy Awards, three American Comedy Awards (including a Lifetime Achievement Award in 1990. ), and two Viewer’s For Quality Television Awards. She was inducted into the Television Hall of Fame and has a star on the Hollywood Walk of Fame. On January 23, 2010 at the Screen Actor’s Gild Awards, she was awarded, by Sandra Bullock, the Life Achievement Award. She is also a pet enthusiast and animal health advocate who works with a number of animal organization such as the Los Angeles Zoo Commission, the Morris Animal Foundation, and Actors Others for Animals. Betty is the president of the Morris Animal Foundation where she has served as a trustee of the organization since 1971. And she donated $100,000 to the Los Angeles Zoo in April 2008 alone. She was also just on Saturday Night Live over the weekend, and it was hilarious! I was laughing so hard.. So, having said all that. I’d say she is the coolest eighty-eight year old you could probabaly ever get a chance to meet. I hope she lives forever!

History of Conde Naste Essay Example | Topics and Well Written Essays - 1750 words

History of Conde Naste - Essay Example Here, in this paper a well known company named Conde Nast’s marketing strategies and business model is to be discussed so as to analyze its market position. This paper helps in identifying the strengths and weaknesses as well as opportunities and threats of the company, particularly in dealing with changing market environment, competition and digital development as business models. The founder of Conde Nast Publication (CNP) was Conde Montrose Nast. This company was established in the year 1907 by him, which is now a part of the Advanced Publication. It is also a renowned name in the industry of journalism and magazine of America along with other developed countries as well. Now-a-days this magazine empire is owned by Si Newhouse Jr. and goes by the name of Conde Nast. With over 30 prestigious magazines under its umbrella, including the titles of Fairchild Publications, the organization is one of the best known magazine conglomerates in the world. The company is particularly well known for its fashion magazines. The organization has also established a mark for its impressive headquarters and well designed cafeteria (Conde Nast, â€Å"Conde Nast home†). Conde Nast is the parent company to some of the globally renowned glossy magazines. It incorporates every specialized magazine, straddling topics as diverse as sports, architecture, gourmet cuisine, travel, literature, fashion, social life and observations, home decoration and popular culture. By the 1990s, the organization accommodated more than thirteen high profile magazines including Architectural Digest, Vanity Fair, Vogue, Street and Smiths Sports Group, Interest in House & Garden, Glamour, Mademoiselle, Brides, Self, Gentlemens Quarterly, Gourmet, Bon Appà ©tit, Condà © Nasts Traveller, Details, and Allure. It even developed a plan of introducing online internet based publications and magazines. Earlier, in 1909 the famous magazine Vogue