High Quality Content by WIKIPEDIA articles! Uranium mining in Arizona has taken place since 1918. Prior to the uranium boom of the late 1940s, uranium in Arizona was a byproduct of vanadium mining of the mineral carnotite.
High Quality Content by WIKIPEDIA articles! Uranopilite is a minor ore of uranium with the chemistry (UO2)6SO4(OH)6O2·12H2O or, Hydrated Uranyl Sulfate Hydroxide.
High Quality Content by WIKIPEDIA articles! The uranyl ion is an oxycation of uranium in the oxidation state +6, with the chemical formula 2+. It has a linear structure with short U-O bonds, indicative of the presence of multiple bonds between uranium and oxygen. Four or more ligands are bound to the uranyl ion in an equatorial plane. The uranyl ion forms many complexes, particularly with ligands that have oxygen donor atoms. Complexes of the uranyl ion are important in the extraction of uranium from its ores and in nuclear fuel reprocessing.
High Quality Content by WIKIPEDIA articles! Urea or carbamide is an organic compound with the chemical formula CO(NH2)2. The molecule has two —NH2 groups joined by a carbonyl (C=O) functional group.
High Quality Content by WIKIPEDIA articles! Valence Technology, Inc. (NASDAQ: VLNC) develops and manufactures advanced lithium iron phosphate cathode materials as well as programmable battery modules and trays. Valence`s products are used in electric vehicle and Plug-in hybrid electric vehicles (PHEVs) such as cars, scooters, motorbikes, commercial vehicles such as buses, delivery vans and trucks. Valence batteries are also used in wheelchairs, medical carts, robotics, as well as stationary applications such as remote power, uninterruptible power supply (UPS), community energy storage, frequency regulation and switching gear in telecoms.
High Quality Content by WIKIPEDIA articles! Valeric acid, or pentanoic acid, is a straight-chain alkyl carboxylic acid with the chemical formula C5H10O2. Like other low-molecular-weight carboxylic acids, it has a very unpleasant odor. It is found naturally in the perennial flowering plant valerian (Valeriana officinalis), from which it gets its name. Its primary use is in the synthesis of its esters. Volatile esters of valeric acid tend to have pleasant odors and are used in perfumes and cosmetics. Ethyl valerate and pentyl valerate are used as food additives because of their fruity flavors.
High Quality Content by WIKIPEDIA articles! Valrubicin (N-trifluoroacetyladriamycin-14-valerate, trade name Valstar) is a chemotherapy drug used to treat bladder cancer. Valrubicin is a semisynthetic analog of the anthracycline doxorubicin, and is administered by infusion directly into the bladder.
High Quality Content by WIKIPEDIA articles! Valsartan (Angiotan) is an angiotensin II receptor antagonist (more commonly called an "ARB", or angiotensin receptor blocker), with particularly high affinity for the type I (AT1) angiotensin receptor. By blocking the action of angiotensin, valsartan dilates blood vessels and reduces blood pressure. In the U.S., valsartan is indicated for treatment of high blood pressure, congestive heart failure (CHF), or post-myocardial infarction (MI). In 2005, Angiotan was prescribed more than 12 million times in the United States and global sales were approximately $6.1 billion in 2010.
High Quality Content by WIKIPEDIA articles! Vanadium oxytrichloride is the inorganic compound with the formula VOCl3. This distillable liquid hydrolyzes readily in air and is a strong oxidant. It is used as a reagent in organic synthesis.
High Quality Content by WIKIPEDIA articles! Vanillin is a phenolic aldehyde, an organic compound with the molecular formula C8H8O3. Its functional groups include aldehyde, ether, and phenol. It is the primary component of the extract of the vanilla bean. It is also found in Leptotes bicolor, roasted coffee and the Chinese red pine. Synthetic vanillin, instead of natural vanilla extract, is sometimes used as a flavoring agent in foods, beverages, and pharmaceuticals.
High Quality Content by WIKIPEDIA articles! Vasoactive intestinal peptide also known as the vasoactive intestinal polypeptide or VIP is a peptide hormone containing 28 amino acid residues that is produced in many tissues of vertebrates including the gut, pancreas and suprachiasmatic nuclei of the hypothalamus in the brain. VIP stimulates contractility in the heart, causes vasodilation, increases glycogenolysis, lowers arterial blood pressure and relaxes the smooth muscle of trachea, stomach and gall bladder. In humans, the vasoactive intestinal peptide is encoded by the VIP gene.
High Quality Content by WIKIPEDIA articles! Vedaclidine (LY-297,802, NNC 11-1053) is a novel analgesic drug which acts as a mixed agonist-antagonist at muscarinic acetylcholine receptors, being a potent and selective agonist for the M1 and M4 subtypes, yet an antagonist at the M2, M3 and M5 subtypes. It is orally active and an effective analgesic over 3x the potency of morphine, with side effects such as salivation and tremor only occurring at many times the effective analgesic dose. Human trials showed little potential for development of dependence or abuse, and research is continuing into possible clinical application in the treatment of neuropathic pain and cancer pain relief.
High Quality Content by WIKIPEDIA articles! The Vedic period (or Vedic age) was a period in history during which the Vedas, the oldest scriptures of Hinduism, were composed. The time span of the period is uncertain. Philological and linguistic evidence indicates that the Rigveda, the oldest of the Vedas, was composed roughly between 1700 and 1100 BCE, also referred to as the early Vedic period. The end of the period is commonly estimated to have occurred about 500 BCE, and 150 BCE has been suggested as a terminus ante quem for all Vedic Sanskrit literature.
High Quality Content by WIKIPEDIA articles! Vela X-1 is a pulsing, eclipsing high-mass X-ray binary (HMXB) system, associated with the Uhuru source 4U 0900-40 and the supergiant star HD 77581. The X-ray emission of the neutron star is caused by the capture and accretion of matter from the stellar wind of the supergiant companion. Vela X-1 is the prototypical detached HMXB.
High Quality Content by WIKIPEDIA articles! The Vela Pulsar (PSR B0833-45 or PSR J0835-4510) is a radio, optical, X-ray and gamma-emitting pulsar associated with Vela Supernova Remnant, in the constellation of Vela.
High Quality Content by WIKIPEDIA articles! Venetian Ceruse, also known as Spirits of Saturn, was a 16th century cosmetic used as a skin whitener. It was in great demand and considered the best available at that time. The product contained a pigment composed of white lead, which was understood to cause lead poisoning that would eventually damage the user`s skin complexion and cause hair loss. If the product was used over an extensive period of time it could cause death. A notable user of this type of cosmetic was Elizabeth I of England.
High Quality Content by WIKIPEDIA articles! Venlafaxine (brand name: Effexor or Efexor) is an antidepressant of the serotonin-norepinephrine reuptake inhibitor (SNRI) class. First introduced by Wyeth in 1993, now marketed by Pfizer, it is licensed for the treatment of major depressive disorder (MDD), as a treatment for generalized anxiety disorder, and comorbid indications in certain anxiety disorders with depression. In 2007, venlafaxine was the sixth most commonly prescribed antidepressant on the U.S. retail market, with 17.2 million prescriptions.
High Quality Content by WIKIPEDIA articles! Vicriviroc, previously named SCH 417690 and SCH-D, is a pyrimidine CCR5 entry inhibitor of HIV-1. It was developed by the pharmaceutical company Schering-Plough. Merck decided to not pursue regulatory approval for use in treatment-experienced patients because the drug did not meet primary efficacy endpoints in late stage trials. Clinical trials continue in patients previously untreated for HIV.
High Quality Content by WIKIPEDIA articles! Vigabatrin is an antiepileptic drug that inhibits the catabolism of gamma-aminobutyric acid (GABA) by irreversibly inhibiting GABA transaminase. It is an analog of GABA, but it is not a receptor agonist. It is sold under the brand name Sabril.
High Quality Content by WIKIPEDIA articles! Vilazodone (marketed as Viibryd) is an SSRI antidepressant developed by Clinical Data for the treatment of major depressive disorder. The chemical compound was originally developed by Merck KGaA (Germany). By 2009 two phase III clinical trials with positive results had been completed. Vilazodone was approved by the FDA for use in the United States to treat major depressive disorder in 10 mg, 20 mg, and 40 mg doses on January 21, 2011.
High Quality Content by WIKIPEDIA articles! Viloxazine (Vivalan, Emovit, Vivarint, Vicilan) is a bicyclic antidepressantmorpholine derivative that acts as a selective norepinephrine reuptake inhibitor (NRI). It is a racemic compound with two stereoisomers, the (S)-(–)-isomer being five times as pharmacologically active as the (R)-(+)-isomer.
High Quality Content by WIKIPEDIA articles! Vinclozolin (trade names: Ronilan, Curalan, Vorlan, Touche) is a common dicarboximide fungicide used to control diseases, such as blights, rots and molds in vineyards, and on fruits and vegetables such as raspberries, lettuce, kiwi, snap beans, and onions. It is also used on turf on golf courses. Two common fungi that vinclozolin is used to protect crops against are botrytis cinerea and sclerotinia scleotiorun. First registered in 1981, vinclozolin is widely used but its overall application has declined. As a pesticide, vinclozolin is regulated by the United States Environmental Protection Agency (U.S. EPA). It has gone through a series of tests and regulations in order to evaluate the risks...
High Quality Content by WIKIPEDIA articles! Vinpocetine (brand names: Cavinton, Intelectol; chemical name: ethyl apovincaminate) is a semisynthetic derivative alkaloid of vincamine (sometimes described as "a synthetic ethyl ester of apovincamine"), an extract from the periwinkle plant.