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Milton Harris (scientist)
Milton Harris (March 21, 1906 – September 12, 1991) was an American chemist. Harris founded the Harris Research Laboratories, which later merged with Gillette, and was Chairman of the Board of Directors for the American Chemical Society from 1966 to 1972. Career Early life and education Born in Los Angeles, Harris was raised in Portland, Oregon. At the age of twelve or thirteen, his first independent business enterprise was building crystal radio sets, and in high school, chemistry became of interest. He entered college at Oregon State University, where he became a member of Phi Sigma Kappa. Harris graduated in 1926. Despite the fact that a formal chemistry department did not exist at Oregon, he earned a degree in chemical engineering. In 1929, Harris received a Doctor of Philosophy in Chemistry from Yale University. Early career Upon his graduation from Yale, Harris took his first job as a chemist at the Cheney Brothers Mill. Two years later, he joined a new textile chemis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Angeles, California
Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world's most populous megacities. Los Angeles is the commercial, financial, and cultural center of Southern California. With a population of roughly 3.9 million residents within the city limits , Los Angeles is known for its Mediterranean climate, ethnic and cultural diversity, being the home of the Hollywood film industry, and its sprawling metropolitan area. The city of Los Angeles lies in a basin in Southern California adjacent to the Pacific Ocean in the west and extending through the Santa Monica Mountains and north into the San Fernando Valley, with the city bordering the San Gabriel Valley to it's east. It covers about , and is the county seat of Los Angeles County, which is the most populous county in the United States with an estimat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Engineering
Chemical engineering is an engineering field which deals with the study of operation and design of chemical plants as well as methods of improving production. Chemical engineers develop economical commercial processes to convert raw materials into useful products. Chemical engineering uses principles of chemistry, physics, mathematics, biology, and economics to efficiently use, produce, design, transport and transform energy and materials. The work of chemical engineers can range from the utilization of nanotechnology and nanomaterials in the laboratory to large-scale industrial processes that convert chemicals, raw materials, living cells, microorganisms, and energy into useful forms and products. Chemical engineers are involved in many aspects of plant design and operation, including safety and hazard assessments, process design and analysis, modeling, control engineering, chemical reaction engineering, nuclear engineering, biological engineering, construction specificatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Enka Company
The American Enka Company was an American company that was the nation's largest rayon fiber manufacturer. Founded in 1928, its research division developed such things as ''Tyrex'' (for the tire cord market), improved rayon and nylon, and by-products for detergent makers and paper mills. It helped bolster the economies of Western North Carolina, West Virginia, Eastern Kentucky, Eastern Tennessee, Northern Georgia and Northern Alabama during the Great Depression and thereafter; its founding in 1928 by Dutch capital led the way for German, Swiss, and British investments in the American South, and it was one of the companies on the original Fortune 500 list. Founding The American Enka Company was established outside of Asheville, North Carolina, in late September 1928 by a Dutch firm, the (Netherlands Artificial Silk Company). The name is derived from the sound of ''N-K'', the initial letters of the parent firm, spoken in Dutch. The Netherlands' ''Nederlandse Kunstzijdefabriek'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandbag
A sandbag or dirtbag is a bag or sack made of hessian (burlap), polypropylene or other sturdy materials that is filled with sand or soil and used for such purposes as flood control, military fortification in trenches and bunkers, shielding glass windows in war zones, ballast, counterweight, and in other applications requiring mobile fortification, such as adding improvised additional protection to armored vehicles or tanks. The advantages are that the bags and sand are inexpensive. When empty, the bags are compact and lightweight for easy storage and transportation. They can be brought to a site empty and filled with local sand or soil. Disadvantages are that filling bags is labor-intensive. Without proper training, sandbag walls can be constructed improperly causing them to fail at a lower height than expected, when used in flood-control purposes. They can degrade prematurely in the sun and elements once deployed. They can also become contaminated by sewage in flood waters ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bedford Cord
Bedford cord, named after the town of New Bedford, Massachusetts, a famous 19th century textile manufacturing city, is a durable fabric that resembles corduroy. The weave has faint lengthwise ridges, but without the filling yarns that make the distinct wales characteristic of corduroy. It can have the appearance of narrow-width stripes with thin lines between. Usage Because of its stiff construction, it is often used in upholstery or in outerwear that does not require draping. Trousers made with Bedford cord are sometimes called "Bedford cords". A water-repellent cotton version of Bedford cord called ''Jungle Cloth'' was used by the U.S. Navy for flight clothing during the 1920s-1940s era. Today Jungle Cloth is made exclusively in Japan on special order to the garment trade. It is about 14 oz in weight and is not water treated. In 1893 a dress made of Bedford cord figured into the trial of Lizzie Borden Lizzie Andrew Borden (July 19, 1860 – June 1, 1927) was an American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartermaster Corps (United States Army)
The United States Army Quartermaster Corps, formerly the Quartermaster Department, is a sustainment, formerly combat service support (CSS), branch of the United States Army. It is also one of three U.S. Army logistics branches, the others being the Transportation Corps and the Ordnance Corps. The U.S. Army Quartermaster Corps mission is to support the development, production, acquisition, and sustainment of general supply, Mortuary Affairs, subsistences, petroleum and water, material and distribution management during peace and war to provide combat power to the U.S. Army. The officer in charge of the branch for doctrine, training, and professional development purposes is the Quartermaster General. The current Quartermaster General is Brigadier General Michael B. Siegl. History The Quartermaster Corps is the U.S. Army's oldest logistics branch, established 16 June 1775. On that date, the Second Continental Congress passed a resolution providing for "one Quartermaster Gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, massa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wool
Wool is the textile fibre obtained from sheep and other mammals, especially goats, rabbits, and camelids. The term may also refer to inorganic materials, such as mineral wool and glass wool, that have properties similar to animal wool. As an animal fibre, wool consists of protein together with a small percentage of lipids. This makes it chemically quite distinct from cotton and other plant fibres, which are mainly cellulose. Characteristics Wool is produced by follicles which are small cells located in the skin. These follicles are located in the upper layer of the skin called the epidermis and push down into the second skin layer called the dermis as the wool fibers grow. Follicles can be classed as either primary or secondary follicles. Primary follicles produce three types of fiber: kemp, medullated fibers, and true wool fibers. Secondary follicles only produce true wool fibers. Medullated fibers share nearly identical characteristics to hair and are long but lac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insulin
Insulin (, from Latin ''insula'', 'island') is a peptide hormone produced by beta cells of the pancreatic islets encoded in humans by the ''INS'' gene. It is considered to be the main anabolic hormone of the body. It regulates the metabolism of carbohydrates, fats and protein by promoting the absorption of glucose from the blood into liver, fat and skeletal muscle cells. In these tissues the absorbed glucose is converted into either glycogen via glycogenesis or fats (triglycerides) via lipogenesis, or, in the case of the liver, into both. Glucose production and secretion by the liver is strongly inhibited by high concentrations of insulin in the blood. Circulating insulin also affects the synthesis of proteins in a wide variety of tissues. It is therefore an anabolic hormone, promoting the conversion of small molecules in the blood into large molecules inside the cells. Low insulin levels in the blood have the opposite effect by promoting widespread catabolism, especial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hair
Hair is a protein filament that grows from follicles found in the dermis. Hair is one of the defining characteristics of mammals. The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and fine vellus hair. Most common interest in hair is focused on hair growth, hair types, and hair care, but hair is also an important biomaterial primarily composed of protein, notably alpha-keratin. Attitudes towards different forms of hair, such as hairstyles and hair removal, vary widely across different cultures and historical periods, but it is often used to indicate a person's personal beliefs or social position, such as their age, sex, or religion. Overview The word "hair" usually refers to two distinct structures: #the part beneath the skin, called the hair follicle, or, when pulled from the skin, the bulb or root. This organ is located in the dermis and maintains stem cells, which not only re-grow the hair after it falls out, bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Geometry
Molecular geometry is the three-dimensional arrangement of the atoms that constitute a molecule. It includes the general shape of the molecule as well as bond lengths, bond angles, torsional angles and any other geometrical parameters that determine the position of each atom. Molecular geometry influences several properties of a substance including its reactivity, polarity, phase of matter, color, magnetism and biological activity. The angles between bonds that an atom forms depend only weakly on the rest of molecule, i.e. they can be understood as approximately local and hence transferable properties. Determination The molecular geometry can be determined by various spectroscopic methods and diffraction methods. IR, microwave and Raman spectroscopy can give information about the molecule geometry from the details of the vibrational and rotational absorbance detected by these techniques. X-ray crystallography, neutron diffraction and electron diffraction can give molecu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
