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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 chemistr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Angeles, California
Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, cultural center of Southern California. With an estimated 3,878,704 residents within the city limits , it is the List of United States cities by population, second-most populous in the United States, behind only New York City. Los Angeles has an Ethnic groups in Los Angeles, ethnically and culturally diverse population, and is the principal city of a Metropolitan statistical areas, metropolitan area of 12.9 million people (2024). Greater Los Angeles, a combined statistical area that includes the Los Angeles and Riverside–San Bernardino metropolitan areas, is a sprawling metropolis of over 18.5 million residents. The majority of the city proper lies in Los Angeles Basin, a basin in Southern California adjacent to the Pacific Ocean in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Engineering
Chemical engineering is an engineering field which deals with the study of the 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 engineering, process design and analysis, modeling and simulation, modeling, control engineering, chemical reaction engineering, nuclear engineering, biologi ... [...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 (Dutch 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'' was fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandbag
A sandbag or dirtbag is a bag or sack made of Hessian (cloth), 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, buoyancy compensator (aviation), 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 ... [...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 America ... [...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 (military), sustainment and former 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 United States Army Ordnance Corps, Ordnance Corps. The U.S. Army Quartermaster Corps mission is to support the development, production, acquisition, and sustainment of general supply, Mortuary Affairs, subsistence, petroleum and water, and 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 (United States), Quartermaster General. The current Quartermaster General is Colonel (United States), Colonel Erin C. Miller. History The Quartermaster Corps is the U.S. Army's oldest logistics branch, established 16 June 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks in World War II, Tanks and Air warfare of World War II, aircraft played major roles, enabling the strategic bombing of cities and delivery of the Atomic bombings of Hiroshima and Nagasaki, first and only nuclear weapons ever used in war. World War II is the List of wars by death toll, deadliest conflict in history, causing World War II casualties, the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Allied-occupied Germany, Germany, Allied-occupied Austria, Austria, Occupation of Japan, Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wool
Wool is the textile fiber 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 some properties similar to animal wool. As an animal fiber, wool consists of protein together with a small percentage of lipids. This makes it chemically quite distinct from cotton and other plant fibers, 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 ... [...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 insulin (''INS)'' gene. It is the main Anabolism, anabolic hormone of the body. It regulates the metabolism of carbohydrates, fats, and protein by promoting the absorption of glucose from the blood into cells of the liver, fat cell, fat, and skeletal muscles. In these tissues the absorbed glucose is converted into either glycogen, via glycogenesis, or Fatty acid metabolism#Glycolytic end products are used in the conversion of carbohydrates into fatty acids, fats (triglycerides), via lipogenesis; in the liver, glucose is converted into both. Glucose production and secretion by the liver are 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 thus an anabolic hormone, promoting the conversion of small molecules in the blood into large ... [...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, gender, or religion. Overview Meaning 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 afte ... [...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 a 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 g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
