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English Wikipedia references for Cdc.gov 101-150 of 2867
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| Platinum Platinum () is a chemical element with the chemical symbol Pt and an atomic number of 78. Its name is derived from the Spanish term platina del Pinto, which is literally translated into "little silver of the Pinto River." It is in Group 10 of the periodic table of elements. Platinum | |
| Demographics of Puerto Rico demographic features of the population of Puerto Rico, including population density, ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of the population. Demographics_of_Puerto_Rico | |
| Prion Talk:Prion | |
| Propane Propane is a three-carbon alkane, normally a gas, but compressible to a transportable liquid. It is derived from other petroleum products during oil or natural gas processing. It is commonly used as a fuel for engines, oxy-gas torches, barbecues, portable stoves and residential central heating.When used as vehicle fuel, it is commonly known as liquefied petroleum gas (LPG or LP-gas), which can be a mixture of propane along with small amounts of propylene, butane, and butylene. Propane | |
| Pyridine Pyridine is a simple aromatic heterocyclic organic compound with the chemical formula C5H5N used as a precursor to agrochemicals and pharmaceuticals, and is also an important solvent and reagent. It is structurally related to benzene, wherein one CH group in the aromatic six-membered ring is replaced by a nitrogen atom. It exists as a colorless liquid with a distinctive, unpleasant fish-like odor. The pyridine ring occurs in many important compounds, including nicotinamides. Pyridine | |
| Phenol Phenol, also known as carbolic acid, is a toxic, white crystalline solid with a sweet tarry odor, commonly referred to as a "hospital smell". Its chemical formula is C6H5OH and its structure is that of a hydroxyl group (-OH) bonded to a phenyl ring; it is thus an aromatic compound. Phenol | |
| Pandemic A pandemic (from Greek πᾶν pan "all" + δῆμος demos "people") is an epidemic of infectious disease that is spreading through human populations across a large region; for instance a continent, or even worldwide. A widespread endemic disease that is stable in terms of how many people are getting sick from it is not a pandemic. Pandemic | |
| Prairie dog Prairie dogs (Cynomys) are burrowing rodents (not actually dogs) native to the grasslands of North America. There are five different species of prairie dogsUnited States, Canada, and Mexico. In Mexico, prairie dogs are primarily found in the northern states which are the southern end of the great plainsSonora, north and northeastern Chihuahua, northern Coahuila, northern Nuevo León, and northern Tamaulipas; in the U.S., Prairie_dog | |
| Penis Talk:Penis | |
| Polyvinyl chloride Polyvinyl_chloride | |
| Intact dilation and extraction Intact dilation and extraction (IDX or intact D&X), also known as intact dilation and evacuation (intact D&E), dilation and extraction (D&X), intrauterine cranial decompression and controversially in the United States as partial birth abortion, is a surgical abortion wherein an intact fetus is removed from the uterus via the cervix. The procedure may also be used to remove a deceased fetus that is developed enough to require dilation of the cervix for its extraction. Intact_dilation_and_extraction | |
| Pelvic inflammatory disease Pelvic inflammatory disease (or disorder) (PID) is a generic term for inflammation of the female uterus, fallopian tubes, and/or ovaries as it progresses to scar formation with adhesions to nearby tissues and organs. This may lead to tissue necrosis and sometimes abscess formation whereby pus can be released into the peritoneum. Pelvic_inflammatory_disease | |
| Pollution Pollution is the introduction of contaminants into an environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms . Pollution can take the form of chemical substances, or energy, such as noise, heat, or light energy. Pollution | |
| Poliomyelitis Poliomyelitis, often called polio or infantile paralysis, is an acute viral infectious disease spread from person to person, primarily via the fecal-oral route. The term derives from the Greek (), meaning "grey", (), referring to the "spinal cord", and the suffix -itis, which denotes inflammation. Poliomyelitis | |
| Quarantine Quarantine is voluntary or compulsory isolation, typically to contain the spread of something considered dangerous, often but not always disease. The word comes from the Italian (seventeenth century Venetian) language Italian quarantena, meaning forty day period. Quarantine | |
| Quinolone quinolones are a family of synthetic broad-spectrum antibiotics. The parent of the group is nalidixic acid. The majority of quinolones in clinical use belong to the subset of fluoroquinolones, which have a fluorine atom attached to the central ring system, typically at the 6-position.The term quinolone(s) refers to the first generation of the potent and toxic synthetic chemotherapeutic agents derived from chloroquine used to treat serious, complicated and life threatening bacterial Quinolone | |
| Quinine Quinine (, ) is a natural white crystalline alkaloid having antipyretic (fever-reducing), antimalarial, analgesic (painkilling), and anti-inflammatory properties and a bitter taste. It is a stereoisomer of quinidine.Quinine was the first effective treatment for malaria caused by Plasmodium falciparum, appearing in therapeutics in the 17th century. Quinine | |
| Radon Radon () is a chemical element with symbol Rn and atomic number 86. Radon is a colorless, odorless, tasteless, naturally occurring, radioactive noble gas that is formed from the decay of radium. It is one of the heaviest substances that remains a gas under normal conditions and is considered to be a health hazard. Radon | |
| Risk Risk is a concept that denotes the precise probability of specific eventualities. Technically, the notion of risk is independent from the notion of value and, as such, eventualities may have both beneficial and adverse consequences. However, in general usage the convention is to focus only on potential negative impact to some characteristic of value that may arise from a future event. Risk | |
| Rift Valley fever Rift Valley Fever (RVF) is a viral zoonosis (affects primarily domestic livestock, but can be passed to humans) causing fever. It is spread by the bite of infected mosquitoes, typically the Aedes or Culex genera. The disease is caused by the RVF virus, a member of the genus Phlebovirus (family Bunyaviridae). Rift_Valley_fever | |
| Ramsay Hunt syndrome type II Ramsay Hunt syndrome (RHS) type 2 is a disorder that is caused by the reactivation of pre-existing herpes zoster virus in a nerve cell bundle (the geniculate ganglion). The neurons in this ganglion are responsible for the movements of facial muscles, the touch sensation of a part of ear and ear canal, the taste function of the frontal two-thirds of the tongue, and the moisturization of the eyes and the mouth. Ramsay_Hunt_syndrome_type_II | |
| Race and intelligence Race and intelligence have in some cases been claimed to be correlated. Contemporary debate on this issue focuses on the nature, causes, and rectifications of ethnic differences in intelligence test scores. The question of the relative roles of nature and nurture in correlation does not prove causation. No gene has been shown to be linked to intelligence, "so attempts to provide a compelling genetic link of race to intelligence are not feasible at this time". Race_and_intelligence | |
| Siege A siege is a military blockade of a city or fortress with the intent of conquering by attrition or assault. The term derives from sedere, Latin for "to sit". A siege occurs when an attacker encounters a city or fortress that cannot be easily taken by a coup de main and refuses to surrender. Siege | |
| Smoking pipe (tobacco) smoking pipe for tobacco smoking typically consists of a small chamber (the bowl) for the combustion of the tobacco to be smoked and a thin stem (shank) that ends in a mouthpiece (the bit). Pipes can range from the very simple machine-made briar pipe to highly-prized handmade and artful implements created by renowned pipemakers which are often very expensive collector's items. Smoking_pipe_(tobacco) | |
| Selenium Selenium () is a chemical element with the atomic number 34, represented by the chemical symbol Se, an atomic mass of 78.96. It is a nonmetal, chemically related to sulfur and tellurium, and rarely occurs in its elemental state in nature. Isolated selenium occurs in several different forms, the most stable of which is a dense purplish-gray semi-metal (semiconductor) form that is structurally a trigonal polymer chain. Selenium | |
| Sugar For the common table sugar, see sucrose.Sugar (see below for etymology) is a class of edible crystalline substances, mainly sucrose, lactose, and fructose. Human taste buds interpret its flavor as sweet. Sugar as a basic food carbohydrate primarily comes from sugar cane and from sugar beet, but also appears in fruit, honey, sorghum, sugar maple (in maple syrup), and in many other sources. Sugar | |
| Human swimming Swimming is movement through water, usually without artificial assistance. Swimming is an activity that can be both useful and recreational. Its primary uses are bathing, cooling, travel, fishing, escape, exercise, and sport. Human_swimming | |
| Scabies Scabies, also known as the itch, is a contagious ectoparasite skin infection characterized by superficial burrows and intense pruritus (itching). It is caused by the mite Sarcoptes scabiei. The word scabies itself is derived from the Latin word for "scratch" (scabere). Other names for the condition include Mite, Itch Mite, Mange, Crusted Scabies, Norwegian Scabies, Sarcoptes scabiei, or The Seven-Year Itch. Scabies | |
| Syphilis Syphilis is a sexually transmitted disease caused by the spirochetal bacterium Treponema pallidum subspecies pallidum. The route of transmission of syphilis is almost always through sexual contact, although there are examples of congenital syphilis via transmission from mother to child in utero.The signs and symptoms of syphilis are numerous; before the advent of serological testing, precise diagnosis was very difficult. Syphilis | |
| Sulfuric acid Sulfuric (or sulphuric) acid, H2SO4, is a strong mineral acid. It is soluble in water at all concentrations. Sulfuric acid has many applications, and is one of the top products of the chemical industry. World production in 2001 was 165 million tonnes, with an approximate value of US$8 billion. Principal uses include lead-acid batteries for cars and other vehicles, ore processing, fertilizer manufacturing, oil refining, wastewater processing, and chemical synthesis. Sulfuric_acid | |
| Streptococcus Streptococcus is a genus of spherical Gram-positive bacteria belonging to the phylum Firmicutes and the lactic acid bacteria group. Cellular division occurs along a single axis in these bacteria, and thus they grow in chains or pairs, hence the name Greek στρεπτος streptos, meaning easily bent or twisted, like a chain (twisted chain). Streptococcus | |
| Thorium Thorium () is a chemical element with the symbol Th and atomic number 90. It is a naturally occurring, slightly radioactive metal, which has been successfully used as an alternative nuclear fuel to uranium in the molten-salt reactor experiment for several years. Thorium is abundant on Earth and this type of reactor can be built to operate significantly cleaner than uranium based powerplants as the waste products are much easier to handle. Thorium | |
| Tungsten Tungsten (), also known as wolfram (), is a chemical element with the chemical symbol W and atomic number 74.A steel-gray metal, tungsten is found in several ores, including wolframite and scheelite. It is remarkable for its robust physical properties, especially the fact that it has the highest melting point of all the non-alloyed metals and the second highest of all the elements after carbon. Tungsten | |
| Thallium Thallium () is a chemical element with the symbol Tl and atomic number 81. This soft gray malleable poor metal resembles tin but discolors when exposed to air. Approximately 60-70% of thallium production is used in the electronics industry, and the rest is used in the pharmaceutical industry and in glass manufacturing. Thallium | |
| Toxicology Toxicology (from the Greek words toxicos and logos) is the study of the adverse effects of chemicals on living organisms. It is the study of symptoms, mechanisms, treatments and detection of poisoning, especially the poisoning of people. Toxicology | |
| Tattoo tattoo is a marking made by inserting ink into the layers of skin to change the pigment for decorative or other reasons. Tattoos on humans are a type of decorative body modification, while tattoos on animals are most commonly used for identification or branding.Tattooing has been practiced worldwide. Tattoo | |
| Tetracycline This article deals with the specific antibiotic called tetracycline. For the group of antibiotics known as the tetracyclines, see tetracycline antibiotics.Tetracycline (INN) () is a broad-spectrum polyketide antibiotic produced by the Streptomyces genus of Actinobacteria, indicated for use against many bacterial infections. Tetracycline | |
| Tuberculosis Tuberculosis (abbreviated as TB for tubercle bacillus or Tuberculosis) is a common and often deadly infectious disease caused by mycobacteria, in humans mainly Mycobacterium tuberculosis . Tuberculosis usually attacks the lungs (as pulmonary TB) but can also affect the central nervous system, the lymphatic system, the circulatory system, the genitourinary system, the gastrointestinal system, bones, joints, and even the skin. Tuberculosis | |
| Trinitrotoluene Trinitrotoluene (; abbreviated TNT), or more specifically, 2,4,6-trinitrotoluene, is a chemical compound with the formula C6H2(NO2)3CH3. This yellow-coloured solid is a reagent (reactant) in chemistry but is best known as a useful explosive material with convenient handling properties. The explosive yield of TNT is considered the standard measure of strength of bombs and other explosives. In chemistry, TNT is used to generate charge transfer salts. Trinitrotoluene | |
| Toluene Toluene, also known as methylbenzene, phenylmethane, and Toluol, is a clear water-insoluble liquid with the typical smell of paint thinners, redolent of the sweet smell of the related compound benzene. It is an aromatic hydrocarbon that is widely used as an industrial feedstock and as a solvent. Like other solvents, toluene is also used as an inhalant drug for its intoxicating properties; however this causes severe neurological harm. Toluene | |
| Transformer By appropriate selection of the ratio of turns, a transformer thus allows an alternating current (AC) voltage to be "stepped up" by making NS greater than NP, or "stepped down" by making NS less than NP. Transformer | |
| Tobacco Tobacco is an agricultural product processed from the fresh leaves of plants in the genus Nicotiana. It can be consumed, used as an organic pesticide, and in the form of nicotine tartrate it is used in some medicines. In consumption it most commonly appears in the forms of smoking, chewing, snuffing, or dipping tobacco, or snus. Tobacco | |
| Trackball trackball is a pointing device consisting of a ball held by a socket containing sensors to detect a rotation of the ball about two axesmouse with an exposed protruding ball. The user rolls the ball with the thumb, fingers, or the palm of the hand to move a cursor. Trackball | |
| Talc Talc (derived from the Persian talc via Arabic talq) is a mineral composed of hydrated magnesium silicate with the chemical formula H2Mg3(SiO3)4 or Mg3Si4O10(OH)2. In loose form, it is the widely used substance known as talcum powder. It occurs as foliated to fibrous masses, its monoclinic crystals being so rare as to be almost unknown. Talc | |
| Typhoid fever Typhoid fever, also known as enteric fever, Salmonella Typhi or commonly just typhoid, is an illness caused by the bacterium Salmonella enterica serovar Typhi. Common worldwide, it is transmitted by the ingestion of food or water contaminated with feces from an infected person. Typhoid_fever | |
| Uranium Uranium () is a silvery-white metallic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. Besides its 92 protons, a uranium nucleus can have between 141 and 146 neutrons, with 146 (U-238) and 143 in its most common isotopes. Uranium | |
| Vanadium Vanadium () is the chemical element with the symbol V and atomic number 23. It is a soft, silvery grey, ductile transition metal. The formation of an oxide layer stabilizes the metal against oxidation. Andrés Manuel del Río discovered vanadium in 1801 by analyzing the mineral vanadinite, and named it erythronium. Vanadium | |
| Virginia Virginia | |
| Vaccination Vaccination is the administration of antigenic material (the vaccine) to produce immunity to a disease. Vaccines can prevent or ameliorate the effects of infection by a pathogen. Vaccination is generally considered to be the most effective and cost-effective method of preventing infectious diseases. Vaccination | |
| Vaccination Talk:Vaccination |
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