... explored it. The light is the result of a biochemical reaction in which the oxidation of a compound called "Luciferin" and the reaction was catalyzed by an enzyme called "Luciferase". The light generated by this biochemical reaction has been utilized by scientists as a bioindicator for Tuberculosis as well as heavy metals. On going research involving bioluminescence is currently underway in the areas of evolution, ecology, histology, physiology, biochemistry, and biomedical applications. History of Bioluminescent Fungi The light of luminous wood was first noted in the early writings of Aristotle which occurred in 382 B.C.(Johnson and Yata 1966 and Newton 195 ...
... around the nucleus of a host rock. The nucleus is often organic such as a tooth or leaf or shell or fossil. As the mineral matter concentrates around the nucleus it forms harder zones known as nodules. are very odd in the sense that they very in size, shape, color and hardness. Often are mistaken for bones, fossils, meteorites and other odd objects. They can be so small that it requires a magnifying glass to be visible or as large as 10 feet in diameter and weigh hundreds of pounds. can also have somewhat of regular shapes such as boxes, blocks, flat disks, pipes, cannon balls and have even been known to resemble parts of a human body such as a foot or rib ...
... lining. Also in the stomach lining, are epithelial cells and the gastric glands. The gastric glands secrete gastric juices. Hydrochloric acid is released which deactivates the salivary amylase, in turn stopping the chemical breakdown of starch into maltose. Pepsinogen, which is an inactive enzyme, will change to pepsin, an active enzyme, when mixed with hydrochloric acid. Pepsin breaks down proteins, forming chains of amino acids called polypeptides. Chyme, a mixture of churned food, mucus, and digestive enzymes, is formed and will pass through the pyloric sphincter into the small intestine. The small intestine is made up of three parts called the duodenum, ...
... a French Engineer named Louis P. Cailletet liquefied oxygen for the first time. Cailletet created liquid oxygen in his lab using a process known as adiabatic expansion, which is a "thermodynamic process in which the temperature of a gas is expanded without adding or extracting heat from the gas or the surrounding system"(Vance 26). At the same time Pictet used the "Joule-Thompson Effect," a thermodynamic process that states that the "temperature of a fluid is reduced in a process involving expansion below a certain temperature and pressure"(McClintock 4). After Cailletet and Pictet, a third method, known as cascading, was developed by Karol S. Olszewski and Zygmu ...
... started over forty years ago with the invention of the capillary column. The gas chromatograph offers rapid and very high-resolution separations of a very wide range of compounds, with the only restriction that the analyzed substance needs to have sufficient volatility. The theory behind the mass spectrometer is to use the difference in mass-to-charge ratio (m/e) of ionized atoms or molecules to separate them from each other. Mass spectrometry is therefore useful for quantitation of atoms or molecules and also for determining chemical and structural information about molecules. Molecules have distinctive fragmentation patterns that provide structural inform ...
... between infection with HIV, the onset for AIDS can vary greatly. The severity of the HIV related illness or illnesses will differ from person to person, according many factors but mostly to the overall health of the individual. The new advances in technology are helping postpone the advancement of the disease. Lets start at the beginning. First, lets learn what AIDS is. AIDS is an acquired defect in your immune system. The passing of any bodily fluids could technically be used as a passage way for the virus. Once infected with HIV it will begin to attack your CD4+cells, commonly known as your t-cells or t-helpers and they will begin to drop in numbers. You me ...
... facts and pictures, they finally gave in and let me keep her. Well, not really though. I say that because my father of all people fell in love with "Molly" as she is now known. He has said on many occasions that Molly is the best dog he has ever had, and believe me, he has had many. The point is, APBT get a bad name because of the people who own them. In doing research for this paper I have become deeply fascinated with this breed and actually understand a great deal more about the APBT than the average person. But to understand more about the APBT, you must understand its history and its impact on society. The (APBT) is a descendent of the original English ...
... the seven who died in this dumbfounding calamity, take a look at exactly what went wrong during this fateful mission, and the outcome from this sorrowful occurrence. First, who exactly were those astronauts that died on the Challenger? Sharon Christa Corrigan McAuliffe, born in 1948, was the famous winner of the teacher-in-space program, was a high school teacher at Concord, N. H., a wife, and a mother of two children. She touched the lives of all those she knew and taught. As a school official in Concord said after her death, "To us, she seemed average. But she turned out to be remarkable. She handled success so beautifully." She also wanted everyone to lear ...
... The worst poison was DDT. By the time naturalists learned of DDT's effect on wildlife, it was almost too late. The American peregrine's scientific name is Falco peregrinus anatum. At one time, people called this falcon a duck hawk. That was a poor name, since falcons aren't hawks and they rarely kill ducks. The American peregrine was once found all across the eastern United States and southern Canada. In the west, the species was found from Mexico to California. DDT poisoning hit this subspecies the hardest. Even today, naturalists are still working hard to save the American peregrine from extinction. The smaller tundra peregrine (Falco peregrinus tundri ...
... (World Atlas of Desertification, 1997) These drylands have been central in the evolution of mankind. These are the lands that sustained our transition from a hunting/gathering to pastoralism and agriculture (Kaya and Yokobiri, 1997). Drylands still provide much of our grain and livestock. These areas cover more than 40 percent of the world’s land surface. As these areas decrease in size, so does the reliability of the land to support the human population. In some areas, desertification is occurring to such a degree that some lands can no longer sustain life. Large regions which have been greatly affected include: the Savannas of Africa, the Great Plains ...
