Biography of Emmett Chappelle, American Inventor

Biography of Emmett Chappelle, American Inventor Emmett Chappelle (born October 24, 1925) is an African-American scientist and inventor who worked for NASA for several decades. He is the recipient of 14 U.S. patents for inventions related to medicine, food science, and biochemistry. A member of the National Inventors Hall of Fame, Chappelle is one of the most distinguished African-American scientists and engineers of the 20th century. Fast Facts: Emmett Chappelle Known For: Chappelle is a scientist and inventor who received over a dozen patents while working for NASA; he devised ways for scientists to measure plant health and detect bacteria in outer space.Born: October 24, 1925 in Phoenix, ArizonaParents: Viola Chappelle and Isom ChappelleEducation: Phoenix College, University of California at Berkeley, University of WashingtonAwards and Honors: National Inventors Hall of FameSpouse: Rose Mary PhillipsChildren: Emmett William Jr., Carlotta, Deborah, and Mark Early Life Emmett Chappelle was born on October 24, 1925, in Phoenix, Arizona, to Viola White Chappelle and Isom Chappelle.  His family farmed cotton and cows on a small farm. As a child, he enjoyed exploring the desert environment of Arizona and learning about nature. Chappelle was drafted into the U.S. Army right after graduating from Phoenix Union Colored High School in 1942 and was assigned to the Army Specialized Training Program, where he was able to take some engineering courses. Chappelle was later reassigned to the all-black 92nd Infantry Division and served in Italy. After returning to the United States, he went on to study electrical engineering and earn his associates degree from Phoenix College. He then earned a B.S. in biology from the University of California at Berkeley. After graduating, Chappelle went on to teach at the Meharry Medical College in Nashville, Tennessee, from 1950 to 1953, where he also conducted his own research. His work was soon recognized by the scientific community and he accepted an offer to study at the University of Washington, where he received his masters degree in biology in 1954. Chappelle continued his graduate studies at Stanford University, though he did not complete a Ph.D. degree. In 1958, Chappelle joined the Research Institute for Advanced Studies in Baltimore, Maryland, where his research on single-celled organisms and photosynthesis contributed to the creation of an oxygen supply system for astronauts. He went on to work for Hazelton Laboratories in 1963. Innovations at NASA In 1966, Chappelle began working at NASAs Goddard Space Flight Center in Greenbelt, Maryland. His work as a research chemist supported NASAs manned space flight initiatives. Chappelle pioneered a way to develop the ingredients ubiquitous in all cellular material. Later, he developed techniques that are still widely used for the detection of bacteria in urine, blood, spinal fluids, drinking water, and foods. Chappelles research helped NASA scientists develop a way to remove soil from Mars as part of the Viking program. In 1977, Chappelle turned his research efforts toward the remote measurement of vegetation health through laser-induced fluorescence (LIF). Working with scientists at the Beltsville Agricultural Research Center, he advanced the development of LIF as a sensitive means of detecting plant stress. Chappelle was the first person to identify the chemical composition of bioluminescence (the emission of light by living organisms). Through his studies of this phenomenon, he proved that the number of bacteria in water can be measured by the amount of light given off by that bacteria. He also showed how satellites can measure luminescence levels to monitor the health of crops (growth rates, water conditions, and harvest timing) and enhance food production. Chappelle used two chemicals produced by fireflies- luciferase  and  luciferin- to develop a technique for detecting adenosine triphosphate (ATP), an organic compound found in all living organisms: You  start out  with the fire fly  which you  have to obtain by the way. Either you catch it yourself or you pay the little kids to run around  catching  them for you. Then you  bring  them into the lab. You chop off their tails, grind them up and get a solution out of these ground-up tails...You add adenosine triphosphate to  that  mixture and you get  light. Chappelles method for identifying ATP is unique in that it works outside of earths atmosphere- meaning it could, in theory, be used to identify extraterrestrial life. The field of exobiology- the study of life beyond the planet Earth- owes much to Chappelles work. The scientist himself, in an interview with The HistoryMakers, said he is inclined to believe there is life beyond Earth: I  think its  likely. Its not life as we know it here on Earth. But I think its likely that theres, there are organisms up there that reproduce. Chappelle retired from NASA in 2001 to live with his daughter and son-in-law in Baltimore, Maryland. Along with his 14 U.S. patents, he has produced more than 35 peer-reviewed scientific or technical publications and nearly 50 conference papers. He has co-authored and edited numerous other publications on a variety of subjects. Accolades Chappelle earned an Exceptional Scientific Achievement Medal from NASA for his work. He is a member of the American Chemical Society, the American Society of Biochemistry and Molecular Biology, the American Society of Photobiology, the American Society of Microbiology, and the American Society of Black Chemists. Throughout his career, he has mentored talented minority high school and college students in his laboratories. In 2007, Chappelle was inducted into the National Inventors Hall of Fame for his work on bioluminescence. He is often included on lists of the most important scientists of the 20th century. Sources Carey, Charles W. African Americans in Science: An Encyclopedia of People and Progress. ABC-CLIO, 2008.Dunbar, Brian. â€Å"Goddard Scientist Inducted Into National Inventors Hall of Fame.† NASA, NASA.â€Å"Emmett Chappelle.† The HistoryMakers.â€Å"Fireflies Light Gains New Uses in Medical and Technical Research.† The New York Times, The New York Times, 25 Aug. 1975.Kessler, James H. Distinguished African American Scientists of the 20th Century. Oryx Press, 1996.

Engineering and Construction Essay Example | Topics and Well Written Essays - 500 words

Engineering and Construction - Essay Example Engineering has brought about advancements in communication and also changed how companies work. Exponential advance in technology has created mind-boggling opportunities for the future generation. Many universities especially in Asia are becoming increasingly utilitarian and mainly focusing on advancing cutting-edge research and the economy. This focus will bring about the creation of new and better technology that will not only help the human race but better it. Robotic machines as the future and new sources of unlimited energy like nuclear power are soon to be discovered. Engineering has affected human beings in both positive and negative views. The invention of the cell phone 1973 changed global communication in the world. It created a new way of communicating with its inventors, Dr. Martin Cooper of Motorola and John F. Mitchell first demonstrated using a handset weighing 2kgs. In 1983, cell phones became commercial through the DynaTAC 8000X (first cellphone to go viral). This advanced in technology brought the world to a global village. Recently, one can make a call to anywhere in the world, therefore, connecting people from all depths and corners of the continent. This has brought people closer, businessmen conducting seminars and meetings via Skype, new people interacting via Facebook. All this made possible by advanced technology in computer and the mobile network. A new technology that will hit the market in a global way is the electric vehicle. Productions have already commenced in Japan but in small productions. Once it goes world, which is major superpower countries it has it will help saves fuel consumption, reduce global warming by a notch and be economically accessible. The computer technology is an important asset in the modern day world. Most advancements in technologies are made possible by use of computers.  Ã‚  

Business Strategy Essay Example | Topics and Well Written Essays - 3500 words - 2

Business Strategy - Essay Example The distribution networks handle yogurt as one of the most interesting products in fresh food division. The consumers have also their own preferences where market and product development are also hinged on. An adult consumer is particularly interested in the health/nutrition component of the product thus she chooses yogurt with added probiotics, or natural yogurt. She consumes the product as a breakfast or a main meal of the day. While the young consumers eat yogurt mainly as a snack for self-indulgence though they still consider health and nutritional value. For the children consumers, they have mothers who choose the product, are considers self-gratification and at the same time the nutritional aspect. The dominant competitors in this sector which have a national scope are the incumbent players such as Sitia Yomo, Danone, and Parmalat; and the new entrant Muller. Other firms operating in the dairy industry (Nestle, Granarolo, Lactis, A.L.A., Milkon, Latteria Sociale Vipiteno) had also their share in the yogurt industry, including the importers (Ehrmann, Stuffer) which caters a multi-regional market. There were emerging challenges among competitors because of the entry of new players in the industry. This has reduced the amount of display space allocation to market leaders and brands. Also, the overcrowding of the sector has increased the discretional power of distribution. The growth in commercial brands and price brackets (from average to medium price) has reduced the linear shelf space available and thus has increased the referencing costs of the major companies. The emergence of modern distribution channels has also raised the level of competition among players with regard to the economic crisis and the development of distribution formulas, e.g., hard discount stores. This has caused major distributors to take actions aiming to improve price perception of the end consumers. They inserted commercial brands in the market and introduced premium prices. Development of new products was done by traditionally marketing oriented companies. On the part of product developers, there are also challenges that can be considered to better compete in the industry. These concerns the choices and evolving values of the end-consumers: the emerging culture of valuing low calorie and health aspects of foods; the fact that proper meals are becoming less popular; because of fast-paced life, there was less time spent for breakfast. 1.2 Changes and reasons Thus, the intense competition among major players in the industry, the not-so-fast paced growth rate, and highly price sensitive consumers have contributed in the structure change. On the part of Yomo, Danone, and Parmalat, they have opted to maintain substantial investments in advertising of their products as well as improving their trade investments. While Yomo has continued to give a high retail price positioning, Danone, Parmalat and Muller has opted to become aggressive in determining and enforcing their pricing policies. The creation of new refrigerated sections and reduction of linear shelf space given to other fresh products such as pre-packed salami, butter or margarine has expanded the display shelf space allotted

Owning a car when one turns 16 Essay Example for Free

Owning a car when one turns 16 Essay There are many advantages and disadvantages to owning a vehicle. A life style change can occur or an empty wallet or purse I can almost expect someone will have when they first start driving a vehicle of their own. This impact in ones life can not only change their life style and their money situation but also there grades, sports, social life, and most of all their physical health. These advantages and disadvantages can be for the better but most of all the worst. In my opinion, owning a vehicle at a young age develops a good source of financial planning, responsibility, and awareness of what can happen to them if they become an uncontrolled driver. Next, with the purchase of a car there can be a life style change and also a huge financial decrease. If one owns a car, especially a teenager, they become cocky and act like a hot shot because they have a vehicle. With this problem a teen may start to develop a new driving style. They will drive with only one arm and will constantly change the CD player to different compact discs and radio station. With having them do this they will increase the chances of not paying attention to the rode and will cause an accident. So, a driver needs to keep their eyes on the rode to not only protect to their own life but the lives of others. Then, the new driver has already developed the bad habits of driving and this will lead them into a having bad grades, missing practices for sports, and lose a social life. The bad grades can come from driving too much, but if one drives, they will need a job. A job is where a loss in a social life comes together. If they are working to drive, they will not have enough time to spend with their friends. Now that they are trying to find time out of work to drive, hang out with friends, and play sports. Sports are after school each day. I dont expect a driver to play sports all week and only work two days and still have enough money to pay for their vehicle. Finally, the most difficult sacrifice to give up is their physical health being tampered with. By working all the time and constantly trying to join sports and hang out with friends this will affect their health. Where is their time to sleep? One will be doing it all but; they do need time to sleep. All of these advantages and disadvantages will change their entire  life style. I believe owning a vehicle will do that but in some cases a change is a good thing so there is always something to look out for. Change can be good but the time will keep ticking away. So, do what makes one happy and make it how you want it.

Lorraine Hansberrys A Raisin In The Sun :: essays research papers

One of the first ideas mentioned in this play, A Raisin In the Sun, is about money. The Younger's end up with no money because of Walter's obsession with it. When Walter decides not to take the extra money he is offered it helps prove Hansberry's theme. Her theme is that money can't buy happiness. This can be seen in Walter's actions throughout the play. While Mama is talking to Walter, she asks him why he always talks about money. "Mama: Oh--So now it's life. Money is life. Once upon a time freedom used to be life--now it's money. I guess the world really do change . . . Walter: No--it was always money, Mama. We just didn't know about it." Walter thinks that the world revolves around money. He wants to believe that if his family were rich they would have perfect lives. This isn't true though, and Mama knows it. She knows that no matter how much money Walter has, he will never be happy unless he has a family that loves him. Before Walter goes out to invest in the liquor store he has a talk with his son. "Walter: You wouldn't understand yet, son, but your daddy's gonna make a transaction . . . a business transaction that's going to change our lives. . . ." Walter thinks that this transaction will make their lives better. What he doesn't realize is that he already has a good life and he doesn't need more money to ma ke him happy. He should be grateful for what he has instead of worrying about money. Mama talks to Walter about her fears of the family falling apart. This is the reason she bought the house and she wants him to understand. Walter doesn't understand and gets angry. "What you need me to say you done right for? You the head of this family. You run our lives like you want to. It was your money and you did what you wanted with it. So what you need for me to say it was all right for? So you butchered up a dream of mine - you - who always talking 'bout your children's dreams..." Walter is so obsessive over money that he yells at his mom for not giving him all of it. He doesn't know that what his mom is doing is for the family. He thinks that having money will make the family happy, when in reality the family doesn't need anymore than what they have to be happy.

Should We Have A Citizenship Test?

The citizenship test was introduced by the Australian Government fairly recently. As a western country, Australia is currently the most recent developed western country to have a citizenship test. However, there is a current debate being held on why is the citizenship test held for and what is the government really testing? According to the SBS news site, the Australian Government has now changed some of the content that is to be tested in the citizenship test and states that â€Å"would-be new Australian citizens will be quizzed on their understanding of their civic duty and responsibilities of citizenship rather than facing questions about Australia's sporting heroes † as it had previously asked questions about a Australian cricket player, Sir Donald Bradman and other irrelevant information. However, when questioned to why was the citizenship test was even introduced, a minister who appeared on an SBS program called ‘Insight' argued that this test was made to test English proficiency of the ‘new' Australians. The test was also made to give the new-comers a view on what is it mean to be Australian and what Australian values are? ,while stating all this information in a book that the participants would need to read. In my opinion, I do not think that this is a worthwhile test as a test can't possibly test whether the people sitting for it actually believe and practice these values but will only test their ability to memorize and learn facts and information out of a book. The test also doesn't use complex English but simple and easy-to-understand words. Therefore if the main point of having the test was to test English proficiency, it would be better to hold an English exam and to be able to apply for citizenship, the person applying would need to have been a permanent resident and would have needed to sit for an English proficiency test then anyway. This test is also a waste of time as the people sitting the test could use the time that was spent on taking the test and preparing for it on work and practicing ‘Australian values' to help Australia's community and economy. We have seen both sides of the argument here and to some others who may feel strongly for or against this issue, we can see that the Australian Government is trying its best to please the masses and that it looks like the citizenship test is here to stay for the long run.

How Team Work Is A Essential For Health Care Facilities Essay

Team work is a crucial element in all organisations especially in health care facility which caters to the needs of elderly clients wherein the safety and the lives of the clients are at stake. The requirements for any organisation to achieve success are team cooperation, unity, and most importantly, a shared vision. In a team where there are members who are different from one another, especially with the old staff and new team members, conflicts may arise that may compromise the quality of service being delivered to our clients. Common Performance Related Problems are the following: 1. Poor Time management †¢ Poor prioritisation, timing and scheduling †¢ Lost time o Tardiness, absenteeism, leaving without proper authorisation o Excessive phone use, break time o Misuse of sick leave †¢ Slow response to work requests, untimely completion of assignments 2. Lack of coordination and poor communication 3. Inappropriate behaviours (poor attitude) †¢ Negativism, unwillingness to cooperation, hostility †¢ Insubordination †¢ Refusal to take responsibility (passing the buck) †¢ Failure or refusal to follow instructions 4. Resistance to change †¢ Resistance to policy, procedure, work method changes †¢ Unwillingness, refusal or inability to update skills †¢ Lack of flexibility in response to problems http://www1.umn.edu/ohr/toolkit/performance/problems/types/ (university of minesota) An effective team makes use of the skills and potentials of each member and synergise it to developShow MoreRelatedCommunication Is A Very Intricate Part Of A Successful Strategic Plan1095 Words   |  5 PagesCommunication is a very intricate part of a successful strategic plan. Collaboration with the board, executive leaders, management team all the way to front-line staff must be informed what the strategic plan is and how it relates to the mission and vision. 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