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Clothing Starch
Laundry starch or clothing starch is a liquid suspension prepared by mixing a vegetable starch in water used in the laundering of clothes. In biochemistry, starch refers to a complex polymer derived from glucose, but in the context of laundry, the term "starch" refers to a suspension of this polymer that is used to stiffen clothing. Starch was widely used in Europe in the 16th and 17th centuries to stiffen the wide collars and ruffs of fine linens that surrounded the necks of the well-to-do. During the 19th and early 20th century it was stylish to stiffen the collars and sleeves of men's shirts and the ruffles of women's petticoats by starching them before the clean clothes were ironed. Starch gave clothing smooth, crisp edges, and had an additional practical purpose: dirt and sweat from a person's neck and wrists would stick to the starch rather than to the fibers of the clothing. The dirt would wash away along with the starch; after laundering, the starch would be reapplied. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Starch
Starch or amylum is a polymeric carbohydrate consisting of numerous glucose units joined by glycosidic bonds. This polysaccharide is produced by most green plants for energy storage. Worldwide, it is the most common carbohydrate in human diets, and is contained in large amounts in staple foods such as wheat, potatoes, maize (corn), rice, and cassava (manioc). Pure starch is a white, tasteless and odorless powder that is insoluble in cold water or Alcohol (chemistry), alcohol. It consists of two types of molecules: the linear and helix, helical amylose and the branched amylopectin. Depending on the plant, starch generally contains 20 to 25% amylose and 75 to 80% amylopectin by weight. Glycogen, the energy reserve of animals, is a more highly branched version of amylopectin. In industry, starch is often converted into sugars, for example by malting. These sugars may be fermentation, fermented to produce ethanol in the manufacture of beer, whisky and biofuel. In addition, sugars ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laundry
Laundry is the washing of clothing and other textiles, and, more broadly, their drying and ironing as well. Laundry has been part of history since humans began to wear clothes, so the methods by which different cultures have dealt with this universal human need are of interest to several branches of scholarship. Laundry work has traditionally been highly gendered, with the responsibility in most cultures falling to women (formerly known as laundresses or washerwomen). The Industrial Revolution gradually led to mechanized solutions to laundry work, notably the washing machine and later the tumble dryer. Laundry, like cooking and child care, is still done both at home and by commercial establishments outside the home. The word "laundry" may refer to the clothing itself, or to the place where the cleaning happens. An individual home may have a laundry room; a utility room includes, but is not restricted to, the function of washing clothes. An apartment building or student ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biochemistry
Biochemistry, or biological chemistry, is the study of chemical processes within and relating to living organisms. A sub-discipline of both chemistry and biology, biochemistry may be divided into three fields: structural biology, enzymology, and metabolism. Over the last decades of the 20th century, biochemistry has become successful at explaining living processes through these three disciplines. Almost all List of life sciences, areas of the life sciences are being uncovered and developed through biochemical methodology and research.#Voet, Voet (2005), p. 3. Biochemistry focuses on understanding the chemical basis that allows biomolecule, biological molecules to give rise to the processes that occur within living Cell (biology), cells and between cells,#Karp, Karp (2009), p. 2. in turn relating greatly to the understanding of tissue (biology), tissues and organ (anatomy), organs as well as organism structure and function.#Miller, Miller (2012). p. 62. Biochemistry is closely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruff (clothing)
A ruff is an item of clothing worn in Western, Central and Northern Europe, as well as Spanish America, from the mid-16th century to the mid-17th century. The round and flat variation is often called a millstone collar after its resemblance to millstones for grinding grain. History The ruff, which was worn by men, women and children, evolved from the small fabric ruffle at the neck of the shirt or chemise. Ruffs served as changeable pieces of cloth that could themselves be laundered separately while keeping the wearer's doublet or gown from becoming soiled at the neckline. The stiffness of the garment forced upright posture, and their impracticality led them to become a symbol of wealth and status. Ruffs were primarily made from linen cambric, stiffened with starch imported from the Low Countries. Later ruffs were sometimes made entirely from lace, an expensive embellishment that developed in the early sixteenth century. The size of the ruff increased as the century ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shirt
A shirt is a cloth garment for the upper body (from the neck to the waist). Originally an undergarment worn exclusively by men, it has become, in American English, a catch-all term for a broad variety of upper-body garments and undergarments. In British English, a shirt is more specifically a garment with a collar, sleeves with cuffs, and a full vertical opening with buttons or snaps (North Americans would call that a " dress shirt", a specific type of collared shirt). A shirt can also be worn with a necktie under the shirt collar. History The world's oldest preserved garment, discovered by Flinders Petrie, is a "highly sophisticated" linen shirt from a First Dynasty Egyptian tomb at Tarkan, dated to : "the shoulders and sleeves have been finely pleated to give form-fitting trimness while allowing the wearer room to move. The small fringe formed during weaving along one edge of the cloth has been placed by the designer to decorate the neck opening and side seam." The s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petticoat
A petticoat or underskirt is an article of clothing, a type of undergarment worn under a skirt or a dress. Its precise meaning varies over centuries and between countries. According to the ''Oxford English Dictionary'', in current British English, a petticoat is "a light loose undergarment ... hanging from the shoulders or waist". In modern American usage, "petticoat" refers only to a garment hanging from the waist. They are most often made of cotton, silk or tulle. Without petticoats, skirts of the 1850s would not have the volume they were known for. In historical contexts (16th to mid-19th centuries), ''petticoat'' refers to any separate skirt worn with a gown, bedgown, bodice or jacket; these petticoats are not, strictly speaking, underwear, as they were made to be seen. In both historical and modern contexts, ''petticoat'' refers to skirt-like undergarments worn for warmth or to give the skirt or dress the desired attractive shape. Terminology Sometimes a petticoat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ironing
Ironing is the use of an iron (appliance), iron, usually heated, to remove wrinkles and unwanted creases from fabric. The heating is commonly done to a temperature of , depending on the fabric. Ironing works by loosening the bonds between the long-chain polymer molecules in the fibres of the material. While the molecules are hot, the fibres are straightened by the weight of the iron, and they hold their new shape as they cool. Some fabrics, such as cotton, require the addition of water to loosen the intermolecular bonds. Many synthetic polymer, modern fabrics (developed in or after the mid-twentieth century) are advertised as needing little or no ironing. Permanent press clothing was developed to reduce the ironing necessary by combining Wrinkle-resistant fabric, wrinkle-resistant polyester with cotton. The first known use of heated metal to "iron" clothes is known to have occurred in China. The electric iron was invented in 1882, by Henry W. Seely. Seely patented his "electric fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerosol Spray
Aerosol spray is a type of dispensing system which creates an aerosol mist of liquid particles. It comprises a can or bottle that contains a payload, and a propellant under pressure. When the container's valve is opened, the payload is forced out of a small opening and emerges as an aerosol or mist. History There is a high chance that the concepts of aerosol go as far back as 1790.Bellis, MarThe History of Aerosol Spray Cans/ref> The first aerosol spray can patent was granted in Oslo in 1927 to Erik Rotheim, a Norwegian chemical engineer,Norwegian Patent No. 46613, issued on November 23, 1926 and a United States patent was granted for the invention in 1931. — Method and Means for the Atomizing or Distribution of Liquid or Semiliquid Materials, issued April 7, 1931 The patent rights were sold to a United States company for 100,000 Norwegian kroner. The Norwegian Postal Service, Posten Norge, celebrated the invention by issuing a stamp in 1998. In 1939, American Julian S. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metal Casting
In metalworking and jewelry making, casting is a process in which a liquid metal is delivered into a mold (usually by a crucible) that contains a negative impression (i.e., a three-dimensional negative image) of the intended shape. The metal is poured into the mold through a hollow channel called a sprue. The metal and mold are then cooled, and the metal part (the ''casting'') is extracted. Casting is most often used for making complex shapes that would be difficult or uneconomical to make by other methods. Casting processes have been known for thousands of years, and have been widely used for sculpture (especially in bronze), jewelry in precious metals, and weapons and tools. Highly engineered castings are found in 90 percent of durable goods, including cars, trucks, aerospace, trains, mining and construction equipment, oil wells, appliances, pipes, hydrants, wind turbines, nuclear plants, medical devices, defense products, toys, and more. Traditional techniques include los ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pharmaceuticals
Medication (also called medicament, medicine, pharmaceutical drug, medicinal product, medicinal drug or simply drug) is a drug used to diagnose, cure, treat, or prevent disease. Drug therapy ( pharmacotherapy) is an important part of the medical field and relies on the science of pharmacology for continual advancement and on pharmacy for appropriate management. Drugs are classified in many ways. One of the key divisions is by level of control, which distinguishes prescription drugs (those that a pharmacist dispenses only on the medical prescription) from over-the-counter drugs (those that consumers can order for themselves). Medicines may be classified by mode of action, route of administration, biological system affected, or therapeutic effects. The World Health Organization keeps a list of essential medicines. Drug discovery and drug development are complex and expensive endeavors undertaken by pharmaceutical companies, academic scientists, and governments. As a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oswego, New York
Oswego () is a City (New York), city in and the county seat of Oswego County, New York, United States. The population was 16,921 at the 2020 United States census, 2020 census. Oswego is situated at the mouth of the Oswego River (New York), Oswego River on the southeastern shore of Lake Ontario in Upstate New York, about northwest of Syracuse, New York, Syracuse and east-northeast of Rochester, New York, Rochester by road. The city promotes itself as "The Port City of Central New York". The first European settlement at Oswego was a British trading post established in 1722, and it was first incorporated as a village in 1828 before becoming a city in 1848. British forces briefly captured the city during the War of 1812, but were defeated nearby later that same month. The canalization of the Oswego River was a major boon to Oswego, attracting settlement and investment; this was later bolstered by its status as a rail hub for much of the 19th and 20th centuries, though this status ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
