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Galalith
Galalith (Erinoid in the United Kingdom) is a synthetic plastic material manufactured by the interaction of casein and formaldehyde. The commercial name is derived from the Ancient Greek words (, "milk") and (, "stone"). It is odourless, insoluble in water, biodegradable, non-allergenic, antistatic and virtually nonflammable. It was produced under other names such as aladdinite (in the US), Casolith (in the Netherlands) and lactoloid (in Japan). Discovery In 1893, French chemist Auguste Trillat discovered the means to insolubilize (i.e., to make a substance incapable of being dissolved in a liquid, especially water) casein by immersion in formaldehyde. In 1897, Wilhelm Krische, a printer from Hanover, was commissioned to develop white, non-flammable, erasable chalkboards. He had difficulty in making the casein adhere to the supporting cardboard, and asked German chemist (Friedrich) Adolph Spitteler (1846–1940) for help. The resultant horn-like plastic was unsuitable for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Casein
Casein ( , from Latin ''caseus'' "cheese") is a family of related phosphoproteins ( αS1, aS2, β, κ) that are commonly found in mammalian milk, comprising about 80% of the proteins in cow's milk and between 20% and 60% of the proteins in human milk. Sheep and buffalo milk have a higher casein content than other types of milk with human milk having a particularly low casein content. Casein has a wide variety of uses, from being a major component of cheese, to use as a food additive. The most common form of casein is sodium caseinate. In milk, casein undergoes phase separation to form colloidal casein micelles, a type of secreted biomolecular condensate. As a food source, casein supplies amino acids, carbohydrates, and two essential elements, calcium and phosphorus. Composition Casein contains a high number of proline amino acids which hinder the formation of common secondary structural motifs of proteins. There are also no disulfide bridges. As a result, it has rel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galalith Synthesis SCHEMATIC V1
Galalith (Erinoid in the United Kingdom) is a synthetic plastic material manufactured by the interaction of casein and formaldehyde. The commercial name is derived from the Ancient Greek words (, "milk") and (, "stone"). It is odourless, insoluble in water, biodegradable, non-allergenic, antistatic and virtually nonflammable. It was produced under other names such as aladdinite (in the US), Casolith (in the Netherlands) and lactoloid (in Japan). Discovery In 1893, French chemist Auguste Trillat discovered the means to insolubilize (i.e., to make a substance incapable of being dissolved in a liquid, especially water) casein by immersion in formaldehyde. In 1897, Wilhelm Krische, a printer from Hanover, was commissioned to develop white, non-flammable, erasable chalkboards. He had difficulty in making the casein adhere to the supporting cardboard, and asked German chemist (Friedrich) Adolph Spitteler (1846–1940) for help. The resultant horn-like plastic was unsuitable for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exposition Universelle (1900)
The Exposition Universelle of 1900, better known in English as the 1900 Paris Exposition, was a world's fair held in Paris, France, from 14 April to 12 November 1900, to celebrate the achievements of the past century and to accelerate development into the next. It was held at the esplanade of Les Invalides, the Champ de Mars, the Trocadéro and at the banks of the Seine between them, with an additional section in the Bois de Vincennes, and it was visited by more than 50 million people. Many international congresses and other events were held within the framework of the Exposition, including the 1900 Summer Olympics. Many technological innovations were displayed at the Fair, including the '' Grande Roue de Paris'' ferris wheel, the ''Rue de l'Avenir'' moving sidewalk, the first ever regular passenger trolleybus line, escalators, diesel engines, electric cars, dry cell batteries, electric fire engines, talking films, the telegraphone (the first magnetic audio recorder), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plastic
Plastics are a wide range of synthetic or semi-synthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be moulded, extruded or pressed into solid objects of various shapes. This adaptability, plus a wide range of other properties, such as being lightweight, durable, flexible, and inexpensive to produce, has led to its widespread use. Plastics typically are made through human industrial systems. Most modern plastics are derived from fossil fuel-based chemicals like natural gas or petroleum; however, recent industrial methods use variants made from renewable materials, such as corn or cotton derivatives. 9.2 billion tonnes of plastic are estimated to have been made between 1950 and 2017. More than half this plastic has been produced since 2004. In 2020, 400 million tonnes of plastic were produced. If global trends on plastic demand continue, it is estimated that by 2050 annual global plastic production will reach ove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stroud, Gloucestershire
Stroud is a market town and civil parish in Gloucestershire, England. It is the main town in Stroud District. The town's population was 13,500 in 2021. Below the western escarpment of the Cotswold Hills, at the meeting point of the Five Valleys, the town is noted for its steep streets. The Cotswold Area of Outstanding Natural Beauty surrounds the town, and the Cotswold Way path passes by it to the west. It lies south of the city of Gloucester, south-southwest of Cheltenham, west-northwest of Cirencester and north-east of the city of Bristol. London is east-southeast of Stroud and the Welsh border at Whitebrook, Monmouthshire, is to the west. Not part of the town itself, the civil parishes of Rodborough and Cainscross form part of Stroud's urban area. Stroud acts as a centre for surrounding villages and market towns including Amberley, Bisley, Bussage, Chalford, Dursley, Eastcombe, Eastington, King's Stanley, Leonard Stanley, Minchinhampton, Nailsworth, Oakridge, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Levallois-Perret
Levallois-Perret () is a commune in the Hauts-de-Seine department and Île-de-France region of north-central France. It lies some from the centre of Paris in the north-western suburbs of the French capital. It is the most densely populated town in Europe and, together with neighbouring Neuilly-sur-Seine, one of the most expensive suburbs of Paris. Name The name Levallois-Perret comes from two housing developments, ''Champerret'' (started by landowner Jean-Jacques Perret in 1822) and ''Village Levallois'' (founded by developer Nicolas-Eugène Levallois in 1845), which resulted in the incorporation of the commune. History On the territory of what is now Levallois-Perret, before the French Revolution, stood the village of Villiers and the hamlet of Courcelles (or La Planchette). They now give their names to two Paris Métro stations. At the time of the creation of French communes during the French Revolution, they were part of the commune of Clichy, and the commune of Neuilly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jura (department)
Jura ( , ) is a department in the Bourgogne-Franche-Comté region in Eastern France. Named after the Jura Mountains, its prefecture is Lons-le-Saunier. Its subprefectures are Dole and Saint-Claude. In 2019, Jura had a population of 259,199.Populations légales 2019: 39 Jura INSEE Its INSEE code is 39. It has a short portion of the border of . History Historically, Jura belonged to the |
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many smaller islands within the British Isles. Northern Ireland shares a land border with the Republic of Ireland; otherwise, the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. The total area of the United Kingdom is , with an estimated 2020 population of more than 67 million people. The United Kingdom has evolved from a series of annexations, unions and separations of constituent countries over several hundred years. The Treaty of Union between the Kingdom of England (which included Wales, annexed in 1542) and the Kingdom of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dudbridge
Dudbridge is a suburb on the southern edge of Stroud in Gloucestershire, England. History Dudbridge gains its name from the first bridge in the location, which spanned the River Frome. This made it an important crossing point for traffic heading south from the Cotswolds to the port of Bristol, which is reflected in that it is the meeting point of four parishes: Stroud in which lies, plus Rodborough to its east, and Stonehouse and Kings Stanley to its south. The fast-flowing river made Dudbridge a natural location for early industry, with the earliest record of a mill dating from 1235. Later industries included dying, forging and metalwork. Industry The Redler's industrial estate is the site of the original Dudbridge Mills, located directly beside the River Frome. From the mid-18th century onwards it housed the mills of Daniel Chance, in the mid-18th century, owned three mills: one corn; one gig and a dyehouse with eight drying racks. In 1794, John Apperley's family fused the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Casein Australian Royal Airforce Pre-1953 Buttons
White is the lightest color and is achromatic (having no hue). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully reflect and scatter all the visible wavelengths of light. White on television and computer screens is created by a mixture of red, blue, and green light. The color white can be given with white pigments, especially titanium dioxide. In ancient Egypt and ancient Rome, priestesses wore white as a symbol of purity, and Romans wore white togas as symbols of citizenship. In the Middle Ages and Renaissance a white unicorn symbolized chastity, and a white lamb sacrifice and purity. It was the royal color of the kings of France, and of the monarchist movement that opposed the Bolsheviks during the Russian Civil War (1917–1922). Greek and Roman temples were faced with white marble, and beginning in the 18th century, with the advent of neoclassical architecture, white became the most common color of new churches ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rennet
Rennet () is a complex set of enzymes produced in the stomachs of ruminant mammals. Chymosin, its key component, is a protease enzyme that curdles the casein in milk. In addition to chymosin, rennet contains other enzymes, such as pepsin and a lipase. Rennet has traditionally been used to separate milk into solid curds and liquid whey, used in the production of cheeses. Rennet from calves has become less common for this use, to the point that less than 5% of cheese in the United States is made using animal rennet today. Most cheese is now made using chymosin derived from bacterial sources. Molecular action of rennet enzymes One of the main actions of rennet is its protease chymosin cleaving the kappa casein chain. Casein is the main protein of milk. Cleavage causes casein to stick to other cleaved casein molecules and form a network. It can cluster better in the presence of calcium and phosphate. This is why those chemicals are occasionally added to supplement pre-existi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris
Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. Since the 17th century, Paris has been one of the world's major centres of finance, diplomacy, commerce, fashion, gastronomy, and science. For its leading role in the arts and sciences, as well as its very early system of street lighting, in the 19th century it became known as "the City of Light". Like London, prior to the Second World War, it was also sometimes called the capital of the world. The City of Paris is the centre of the Île-de-France region, or Paris Region, with an estimated population of 12,262,544 in 2019, or about 19% of the population of France, making the region France's primate city. The Paris Region had a GDP of €739 billion ($743 billion) in 2019, which is the highest in Europe. According to the Economis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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