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Hydrazine Sulfate
Hydrazine sulfate, more properly hydrazinium hydrogensulfate, is a salt of the cation hydrazinium and the anion bisulfate (hydrogensulfate), with the formula or more properly . It is a white, water-soluble solid at room temperature. Hydrazine sulfate has a number of uses in chemical laboratories and in the chemical industry, including analytical chemistry and the synthesis of organic compounds. In those uses it is usually preferred to pure hydrazine, because it is not volatile and is less susceptible to atmospheric oxidation on storage. Preparation The compound can be prepared by treating an aqueous solution of hydrazine () with sulfuric acid (). Laboratory and industrial uses Besides its general use as a safe source of hydrazine, the compound is used as a catalyst in making fibers out of acetate, in the analysis and synthesis of minerals, and testing for arsenic in metals. Medical uses Hydrazine sulfate can be used as a fungicide and antiseptic. Hydrazine sulfate has been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt (chemistry)
In chemistry, a salt is a chemical compound consisting of an ionic assembly of positively charged cations and negatively charged anions, which results in a compound with no net electric charge. A common example is table salt, with positively charged sodium ions and negatively charged chloride ions. The component ions in a salt compound can be either inorganic, such as chloride (Cl−), or organic, such as acetate (). Each ion can be either monatomic, such as fluoride (F−), or polyatomic, such as sulfate (). Types of salt Salts can be classified in a variety of ways. Salts that produce hydroxide ions when dissolved in water are called ''alkali salts'' and salts that produce hydrogen ions when dissolved in water are called ''acid salts''. ''Neutral salts'' are those salts that are neither acidic nor basic. Zwitterions contain an anionic and a cationic centre in the same molecule, but are not considered salts. Examples of zwitterions are amino acids, many metabolites, peptides, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiseptic
An antiseptic (from Greek ἀντί ''anti'', "against" and σηπτικός ''sēptikos'', "putrefactive") is an antimicrobial substance or compound that is applied to living tissue/skin to reduce the possibility of infection, sepsis, or putrefaction. Antiseptics are generally distinguished from ''antibiotics'' by the latter's ability to safely destroy bacteria within the body, and from '' disinfectants'', which destroy microorganisms found on non-living objects. Antibacterials include antiseptics that have the proven ability to act against bacteria. Microbicides which destroy virus particles are called viricides or antivirals. Antifungals, also known as antimycotics, are pharmaceutical fungicides used to treat and prevent mycosis (fungal infection). Surgery The widespread introduction of antiseptic surgical methods was initiated by the publishing of the paper '' Antiseptic Principle of the Practice of Surgery'' in 1867 by Joseph Lister, which was inspired by Louis P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bob Guccione
Robert Charles Joseph Edward Sabatini Guccione ( ; December 17, 1930 – October 20, 2010) was an American photographer and publisher. He founded the adult magazine ''Penthouse'' in 1965. This was aimed at competing with Hugh Hefner's ''Playboy'', but with more explicit erotic content, a special style of soft-focus photography, and in-depth reporting of government corruption scandals and the art world. By 1982 Guccione was listed in the ''Forbes 400'' wealth list, and owned one of the biggest mansions in Manhattan. However, he made some extravagant investments that failed, and the growth of free online pornography in the 1990s greatly diminished his market. In 2003, Guccione's publishers filed for bankruptcy and he resigned as chairman. Early life Guccione was born in Brooklyn, New York, of Sicilian descent and raised Catholic in Bergenfield, New Jersey, the eldest child of Anthony, an accountant, and Nina, a housewife. An altar boy, he considered but rejected entering the priestho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kathy Keeton
Kathryn "Kathy" Keeton (February 17, 1939 – September 19, 1997) was an American magazine publisher along with her partner, and later husband, ''Penthouse'' publisher Bob Guccione. Early life and show business career Born in South Africa and raised on a farm, Keeton took up dancing in childhood to strengthen a leg affected by polio. She won a scholarship to the Sadler's Wells Ballet in London, but left after she turned 18 to work in a nightclub. She appeared in bit parts in four British movies: ''Carlton-Browne of the F.O.'' (1959) (as a tabletop dancer), ''Expresso Bongo'' (1959), '' Too Hot to Handle'' (1960), and '' The Spy Who Came in from the Cold'' (1965) (as a stripper). At the age of 24 she was what The Associated Press called "one of the highest-paid strippers in Europe". Publishing career She met Bob Guccione in 1965 and they remained together, although they did not marry until 1988. In his publishing company her title was President/Chief Operating Officer of General ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penthouse (magazine)
''Penthouse'' is a men's magazine founded by Bob Guccione. It combines urban lifestyle articles and softcore pornographic pictures of women that, in the 1990s, evolved into hardcore pornographic pictures of women. Although Guccione was American, the magazine was founded in 1965 in the United Kingdom. Beginning in September 1969, it was sold in the United States as well. ''Penthouse'' has been owned by Penthouse Global Media Inc. since 2016. The assets of Penthouse Global Media were bought out by WGCZ Ltd. (the owners of XVideos) in June 2018 after winning a bankruptcy auction bid. The magazine's centerfold models are known as ''Penthouse'' Pets, and customarily wear a distinctive necklace in the form of a stylized key which incorporates both the Mars and Venus symbols in its design. Bob Guccione At the height of its success, Guccione, who died in 2010, was considered one of the richest men in the United States. In 1982 he was listed in the Forbes 400 ranking of wealthiest peopl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phosphoenolpyruvate Carboxykinase
Phosphoenolpyruvate carboxykinase (, PEPCK) is an enzyme in the lyase family used in the metabolic pathway of gluconeogenesis. It converts oxaloacetate into phosphoenolpyruvate and carbon dioxide. It is found in two forms, cytosolic and mitochondrial. Structure In humans there are two isoforms of PEPCK; a cytosolic form (SwissProt P35558) and a mitochondrial isoform (SwissProt Q16822) which have 63.4% sequence identity. The cytosolic form is important in gluconeogenesis. However, there is a known transport mechanism to move PEP from the mitochondria to the cytosol, using specific membrane transport proteins. PEP transport across the inner mitochondrial membrane involves the mitochondrial tricarboxylate transport protein and to a lesser extent the adenine nucleotide carrier. The possibility of a PEP/pyruvate transporter has also been put forward. X-ray structures of PEPCK provide insight into the structure and the mechanism of PEPCK enzymatic activity. The mitochondria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gluconeogenesis
Gluconeogenesis (GNG) is a metabolic pathway that results in the generation of glucose from certain non- carbohydrate carbon substrates. It is a ubiquitous process, present in plants, animals, fungi, bacteria, and other microorganisms. In vertebrates, gluconeogenesis occurs mainly in the liver and, to a lesser extent, in the cortex of the kidneys. It is one of two primary mechanisms – the other being degradation of glycogen (glycogenolysis) – used by humans and many other animals to maintain blood sugar levels, avoiding low levels ( hypoglycemia). In ruminants, because dietary carbohydrates tend to be metabolized by rumen organisms, gluconeogenesis occurs regardless of fasting, low-carbohydrate diets, exercise, etc. In many other animals, the process occurs during periods of fasting, starvation, low-carbohydrate diets, or intense exercise. In humans, substrates for gluconeogenesis may come from any non-carbohydrate sources that can be converted to pyruvate or intermed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warburg Effect (oncology)
In oncology, the Warburg effect () is the observation that most cancer cells produce energy predominantly not through the 'usual' citric acid cycle and oxidative phosphorylation in the mitochondria as observed in normal cells, but through a less efficient process of 'aerobic glycolysis' consisting of high level of glucose uptake and glycolysis followed by lactic acid fermentation taking place in the cytosol, not the mitochondria, even in the presence of abundant oxygen. This observation was first published by Otto Heinrich Warburg, who was awarded the 1931 Nobel Prize in Physiology for his "discovery of the nature and mode of action of the respiratory enzyme". The precise mechanism and therapeutic implications of the Warburg effect, however, remain unclear. In fermentation, the last product of glycolysis, pyruvate, is converted into lactate (lactic acid fermentation) or ethanol ( alcoholic fermentation). While fermentation produces adenosine triphosphate (ATP) only in low yie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glycolysis
Glycolysis is the metabolic pathway that converts glucose () into pyruvate (). The free energy released in this process is used to form the high-energy molecules adenosine triphosphate (ATP) and reduced nicotinamide adenine dinucleotide (NADH). Glycolysis is a sequence of ten reactions catalyzed by enzymes. Glycolysis is a metabolic pathway that does not require oxygen (In anaerobic conditions pyruvate is converted to lactic acid). The wide occurrence of glycolysis in other species indicates that it is an ancient metabolic pathway. Indeed, the reactions that make up glycolysis and its parallel pathway, the pentose phosphate pathway, occur in the oxygen-free conditions of the Archean oceans, also in the absence of enzymes, catalyzed by metal. In most organisms, glycolysis occurs in the liquid part of cells, the cytosol. The most common type of glycolysis is the ''Embden–Meyerhof–Parnas (EMP) pathway'', which was discovered by Gustav Embden, Otto Meyerhof, and Jak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Cancer Institute
The National Cancer Institute (NCI) coordinates the United States National Cancer Program and is part of the National Institutes of Health (NIH), which is one of eleven agencies that are part of the U.S. Department of Health and Human Services. The NCI conducts and supports research, training, health information dissemination, and other activities related to the causes, prevention, diagnosis, and treatment of cancer; the supportive care of cancer patients and their families; and cancer survivorship. NCI is the oldest and has the largest budget and research program of the 27 institutes and centers of the NIH ($6.9 billion in 2020). It fulfills the majority of its mission via an extramural program that provides grants for cancer research. Additionally, the National Cancer Institute has intramural research programs in Bethesda, Maryland, and at the Frederick National Laboratory for Cancer Research at Fort Detrick in Frederick, Maryland. The NCI receives more than in funding eac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dietary Supplement
A dietary supplement is a manufactured product intended to supplement one's diet by taking a pill, capsule, tablet, powder, or liquid. A supplement can provide nutrients either extracted from food sources or that are synthetic in order to increase the quantity of their consumption. The class of nutrient compounds includes vitamins, minerals, fiber, fatty acids, and amino acids. Dietary supplements can also contain substances that have not been confirmed as being essential to life, but are marketed as having a beneficial biological effect, such as plant pigments or polyphenols. Animals can also be a source of supplement ingredients, such as collagen from chickens or fish for example. These are also sold individually and in combination, and may be combined with nutrient ingredients. The European Commission has also established harmonized rules to help insure that food supplements are safe and appropriately labeled. Creating an industry estimated to have a 2020 value of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cancer
Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread. Possible signs and symptoms include a lump, abnormal bleeding, prolonged cough, unexplained weight loss, and a change in bowel movements. While these symptoms may indicate cancer, they can also have other causes. Over 100 types of cancers affect humans. Tobacco use is the cause of about 22% of cancer deaths. Another 10% are due to obesity, poor diet, lack of physical activity or excessive drinking of alcohol. Other factors include certain infections, exposure to ionizing radiation, and environmental pollutants. In the developing world, 15% of cancers are due to infections such as '' Helicobacter pylori'', hepatitis B, hepatitis C, human papillomavirus infection, Epstein–Barr virus and human immunodeficiency virus (HIV). These factors act, at least partly, by changing the genes o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
