Search: in
Arsenite
Arsenite in Encyclopedia Encyclopedia
  Tutorials     Encyclopedia     Videos     Books     Software     DVDs  
       
Encyclopedia results for Arsenite

Arsenite





Encyclopedia results for Arsenite

  1. Arsenite

    rewrite photosynthesis rules , Chemistry World, 15 August 2008 ref In humans, arsenite inhibits ... , a participant coenzyme. In this inhibition, arsenite poisoning affects energy production ...   more details



  1. Sodium arsenite

    Unreferenced stub auto yes date December 2009 Chembox Verifiedfields changed verifiedrevid 413512400 ImageFile Sodium catena arsenite NaAsO2 xtal 2004 3D balls.png ImageSize IUPACName sodium arsenite OtherNames sodium arsenate III Section1 Chembox Identifiers CASNo Ref cascite correct CAS CASNo 7784 46 5 KEGG Ref keggcite changed kegg KEGG C11906 Section2 Chembox Properties Formula NaAsO sub 2 sub MolarMass 129.91 g mol Appearance colorless solid Density MeltingPt BoilingPt Solubility Section7 Chembox Hazards ExternalMSDS http msds.chem.ox.ac.uk SO sodium arsenite.html RPhrases R23 , R25 , R45 NFPA H 3 NFPA R 0 NFPA F 0 NFPA O FlashPt Autoignition Sodium arsenite is a Compound chemistry compound with formula NaAsO sub 2 sub . It is the sodium salt of arsenous acid . It is a crystalline solid consisting of sodium cations, Na sup sup , and catena arsenite anions, AsO sub 2 sub Su b n p n , which are infinite O As O chains, similar in structure to selenium dioxide , SeO sub 2 sub . It is a pesticide. File Sodium catena arsenite chains from xtal 2004 3D balls.png 250px Catena arsenite chains See also Sodium arsenate DEFAULTSORT Sodium Arsenite Category Arsenites Category Sodium compounds Inorganic compound stub de Natriumarsenit fr M taars nite de sodium pl Metaarsenin sodu pt Arsenito de s dio vi Natri asenit ...   more details



  1. Arsenite (band)

    Infobox musical artist name Arsenite img background group or band alias origin Kumla , flag2 Sweden genre Thrash metal br speed metal years active 2009 present label associated acts Unaffected website http arsenite.bandcamp.com http arsenite.bandcamp.com current members Tony Classon br Simon Hagberg br Richard Fredriksson br Martin Giaever past members Arsenite is a thrash metal band founded in 2009 in Kumla, Sweden by Simon Hagberg and Tony Classon. History Arsenite is a thrash metal band from Sweden, formed in early 2009 by guitarist Simon Hagberg and guitarist and singer Tony Classon. With influences like Megadeth , Metallica and Iced Earth , mixed with some Judas Priest , Mot rhead and Wolf band Wolf . ref http arsenite.bandcamp.com ref ref http www.onslaughtradio.com unsigned band arsenite ref In early 2011 they released their first EP, High speed Thrashing Maniacs . It was written by the band cooperated, and was mastered and mixed by Niklas St lvind of Wolf band Wolf . ref http arsenite.bandcamp.com ref Band members Tony Classon Guitar Vocals Simon Hagberg Guitars Richard Fredriksson Drums Martin Giaever Bass Guitar Discography EP S High Speed Thrashing Maniacs 2011 Demos Liberty Is Dead 2010 References reflist 1 External links Official website http arsenite.bandcamp.com Category Thrash metal musical groups Category Swedish thrash metal musical groups es Arsenite ...   more details



  1. Potassium arsenite

    chembox verifiedrevid 403730533 ImageFile ImageSize IUPACName OtherNames Section1 Chembox Identifiers CASNo 13464 35 2 PubChem 61616 SMILES O As O. K Section2 Chembox Properties Formula AsKO sub 2 sub MolarMass 146.019 Appearance colorless solid Density MeltingPt BoilingPt Solubility Section3 Chembox Hazards MainHazards FlashPt Autoignition Potassium arsenite KAsO sub 2 sub is the compound which forms the basis of Fowler s solution and is used as a specific rodenticide. It is toxic in humans. Safety and health concerns Currently, the substance is banned from the use for plant protection by the UK government ref name bnpuk cite web last Chemicals Regulation Directorate first authorlink coauthors title Banned and Non Authorised Pesticides in the United Kingdom work publisher date url http www.pesticides.gov.uk approvals.asp?id 55 doi accessdate 1 December 2009 ref Notes reflist Category Arsenites inorganic compound stub ar de Kaliumarsenit ...   more details



  1. Arsenite minerals

    Arsenite minerals are very rare oxygen bearing arsenic mineral s. Classical world localities where such minerals occur include the complex skarn manganese deposit at L ngban Sweden and the polymetallic Tsumeb deposit Namibia . The most often reported arsenite anion in minerals is the AsO sub 3 sub sup 3 sup anion, present for example in reinerite Zn sub 3 sub AsO sub 3 sub sub 2 sub . Unique diarsenite anions occur i. e. in leiteite Zn As sub 2 sub O sub 4 sub and paulmooreite Pb As sub 2 sub O sub 5 sub . More complex arsenites include schneiderh hnite Fe sup 2 sup Fe sup 3 sup sub 3 sub As sub 5 sub O sub 13 sub and ludlockite PbFe sup 3 sup sub 4 sub As sub 10 sub O sub 22 sub . ref http www.mindat.org Mindat ref ref http www.handbookofmineralogy.com Handbook of Mineralogy ref ref http www.webmineral.com Webmineral ref Nickel Strunz Classification 04 Oxides International Mineralogical Association IMA CNMNC proposes a new hierarchical scheme Mills et al., 2009 . This list uses it to modify the Strunz classification Classification of Nickel Strunz 10 ed, pending publication . Abbreviations IMA CNMNC status discredited. ? IMA CNMNC status questionable doubtful. REE Rare earth element Rare earth element Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu PGE Platinum group Platinum group element Ru, Rh, Pd, Os, Ir, Pt 03.C Aluminofluorides, 06 Borates, 08 Vanadates 04.H V sup 5,6 sup Vanadates , 09 Silicates Neso insular from Greek language Greek n sos, island Soro grouping from Greek s ros, heap, mound especially of corn Cyclo ring Ino chain from Greek genitive inos , fibre Phyllo sheet from Greek phyllon , leaf Tekto three dimensional framework Nickel Strunz code scheme NN.XY. x NN Nickel Strunz mineral class number X Nickel Strunz mineral division letter Y Nickel Strunz mineral family letter nowiki nowiki x Nickel Strunz mineral ... strunz.php publisher webmineral.com first Jim last Ferraiolo Refend Strunz DEFAULTSORT Arsenite Minerals ...   more details



  1. Arsenite-transporting ATPase

    enzyme Name arsenite transmembrane transporting ATPase EC number 3.6.3.16 CAS number IUBMB EC number 3 6 3 16 GO code 0015446 image width caption In enzymology , an arsenite transporting ATPase EC number 3.6.3.16 is an enzyme that catalysis catalyzes the chemical reaction ATP H sub 2 sub O arsenitein math rightleftharpoons math ADP phosphate arseniteout The 3 substrate biochemistry substrates of this enzyme are adenosine triphosphate ATP , water H sub 2 sub O , and arsenite , whereas its 3 product chemistry products are adenosine diphosphate ADP , phosphate , and arsenite . This enzyme belongs to the family of hydrolase s, specifically those acting on acid anhydride s acting on acid anhydrides to catalyse transmembrane movement of substances. The systematic name of this enzyme class is ATP phosphohydrolase arsenite exporting . Structural studies As of late 2007, 3 tertiary structure structures have been solved for this class of enzymes, with Protein Data Bank PDB accession codes PDB link 1IHU , PDB link 1II0 , and PDB link 1II9 . References reflist 1 cite journal author Silver S, Misra TK, Laddaga RA date 1989 title DNA sequence analysis of bacterial toxic heavy metal resistances journal Biol. Trace. Elem. Res. volume 21 pages 145&ndash 63 pmid 2484581 doi 10.1007 BF02917247 cite journal author Rosen BP, Weigel U, Monticello RA, Edwards BP date 1991 title Molecular analysis of an anion pump purification of the ArsC protein journal Arch. Biochem. Biophys. volume 284 pages 381&ndash 5 pmid 1703401 doi 10.1016 0003 9861 91 90312 7 issue 2 cite journal author Rosen BP, Weigel U, Monticello RA, Edwards BP date 1991 title Molecular analysis of an anion pump purification of the ArsC protein journal Arch. Biochem. Biophys. volume 284 pages 381&ndash 5 pmid 1703401 doi 10.1016 0003 9861 91 90312 7 issue 2 cite journal author Zhou T, Rosen BP, Gatti DL date Pt 4 title Crystallization and preliminary x ray analysis of the catalytic subunit of the ATP dependent arsenite pump encoded ...   more details



  1. Arsenate reductase (azurin)

    enzyme Name arsenate reductase azurin EC number 1.20.98.1 CAS number IUBMB EC number 1 20 98 1 GO code 0050611 image width caption In enzymology , an arsenate reductase azurin EC number 1.20.98.1 is an enzyme that catalysis catalyzes the chemical reaction arsenite H sub 2 sub O 2 azurinox math rightleftharpoons math arsenate 2 azurinred 2 H sup sup The 3 substrate biochemistry substrates of this enzyme are arsenite , water H sub 2 sub O , and azurinox , whereas its 3 product chemistry products are arsenate , azurinred , and hydrogen ion H sup sup . This enzyme belongs to the family of oxidoreductase s, specifically those acting on phosphorus or arsenic in donor with other, known, acceptors. The systematic name of this enzyme class is arsenite azurin oxidoreductase . This enzyme is also called arsenite oxidase . References reflist 1 cite journal author Anderson GL, Williams J, Hille R date 1992 title The purification and characterization of arsenite oxidase from Alcaligenes faecalis, a molybdenum containing hydroxylase journal J. Biol. Chem. volume 267 pages 23674&ndash 82 pmid 1331097 issue 33 cite journal author Ellis PJ, Conrads T, Hille R, Kuhn P date Camb title Crystal structure of the 100 kDa arsenite oxidase from Alcaligenes faecalis in two crystal forms at 1.64 A and 2.03 A journal S volume Structure. pages 125&ndash 32 pmid 11250197 issue 2 1.20 enzyme stub Category EC 1.20.98 Category Enzymes of unknown structure it Arsenato reduttasi azurina ja ...   more details



  1. Arsenate reductase (donor)

    enzyme Name arsenate reductase donor EC number 1.20.99.1 CAS number IUBMB EC number 1 20 99 1 GO code 0050612 image width caption In enzymology , an arsenate reductase donor EC number 1.20.99.1 is an enzyme that catalysis catalyzes the chemical reaction arsenite acceptor math rightleftharpoons math arsenate reduced acceptor Thus, the two substrate biochemistry substrates of this enzyme are arsenite and Electron acceptor acceptor , whereas its two product chemistry products are arsenate and reduced acceptor . This enzyme belongs to the family of oxidoreductase s, specifically those acting on phosphorus or arsenic in donor with other acceptors. The systematic name of this enzyme class is arsenate acceptor oxidoreductase . This enzyme is also called arsenate acceptor oxidoreductase . References reflist 1 cite journal author Krafft T, Macy JM date 1998 title Purification and characterization of the respiratory arsenate reductase of Chrysiogenes arsenatis journal Eur. J. Biochem. volume 255 pages 647&ndash 53 pmid 9738904 doi 10.1046 j.1432 1327.1998.2550647.x issue 3 cite journal author Radabaugh TR, Aposhian HV date 2000 title Enzymatic reduction of arsenic compounds in mammalian systems reduction of arsenate to arsenite by human liver arsenate reductase journal Chem. Res. Toxicol. volume 13 pages 26&ndash 30 pmid 10649963 doi 10.1021 tx990115k issue 1 1.20 enzyme stub Category EC 1.20.99 Category Enzymes of unknown structure it Arsenato reduttasi donatore ja ...   more details



  1. List of UN numbers 1601 to 1700

    UN 1677 6.1 Potassium arsenate UN 1678 6.1 Potassium arsenite UN 1679 6.1 Potassium cuprocyanide UN 1680 6.1 Potassium cyanide UN 1683 6.1 Silver arsenite UN 1684 6.1 Silver cyanide UN 1685 6.1 Sodium arsenate UN 1686 6.1 Sodium arsenite , aqueous solutions UN 1687 6.1 Sodium azide UN 1688 6.1 Sodium cacodylate UN 1689 6.1 Sodium cyanide UN 1690 6.1 Sodium fluoride UN 1691 6.1 Strontium arsenite ...   more details



  1. Zimbabweite

    Zimbabweite is a mineral formula Na,K sub 2 sub PbAs sub 4 sub Nb,Ta,Ti sub 4 sub O sub 18 sub . ref name Mindat http www.mindat.org min 4403.html Mindat ref It is generally classed as an arsenite but is notable for also containing niobium and tantalum . A yellow brown mineral with orthorhombic crystal habit and a hardness of 5. It was discovered in 1986 in kaolin ized pegmatite , i.e. weathered to clay, in Zimbabwe . ref name Mindat References Reflist Oxide mineral stub Titanium minerals Category Sodium minerals Category Potassium minerals Category Lead minerals Category Arsenic minerals Category Niobium minerals Category Tantalum minerals Category Titanium minerals Category Oxide minerals Category Orthorhombic minerals it Zimbabweite ...   more details



  1. Metalloestrogen

    Metalloestrogens are a class of inorganic xenoestrogen s which can affect the gene expression of human cells responding to estrogen . Effects are related to the physiologic function of estrogen because metalloestrogens have shown Affinity pharmacology affinity for estrogen receptor s. Because they can mimic estrogen thus activating the receptor, they are considered harmful and potentially linked with breast cancer . ref http www3.interscience.wiley.com cgi bin abstract 112438172 ABSTRACT Metalloestrogens an emerging class of inorganic xenoestrogens with potential to add to the oestrogenic burden of the human breast J Appl Toxicol. 2006 May Jun 26 3 191 7. ref List of metalloestrogens include aluminium , antimony , arsenite , barium , cadmium , chromium Cr II , cobalt , copper , lead , mercury element mercury , nickel , Selenite mineral selenite , Citation needed date August 2009 not selenium more generally? tin and vanadate . References reflist Category Estrogens Category Endocrinology ...   more details



  1. Fowler's solution

    Fowler s solution is a solution containing potassium arsenite that once was prescribed as a remedy or a Pharmaceutical drug For nutrition tonic . A Dr. Fowler of Stafford , England proposed its use in 1786 as a substitute for a patent medicine , tasteless ague drop. It was prescribed in the United States until the late 1950s for a range of ailments including malaria , chorea , and syphilis . Fowler s solution, also known as Liquor Potassii Arenitis, Kali Arsenicosum or Kali arseniatum , is a 1 solution of potassium arsenite , KH sub 2 sub nowiki AsO nowiki sub 3 sub . Because of the poisonous and carcinogen ic nature of arsenic chemical compounds compounds , Fowler s solution is dangerous. Documented adverse drug reaction side effect s of treatment with Fowler s solution include cirrhosis of the liver , idiopathic portal hypertension , bladder cancer urinary bladder cancer , skin cancer s. In 2001 the U.S. FDA approved a proprietary formula of a solution of arsenic trioxide for acute promyelocytic leukaemia. ref Cite journal author1 Jun Zhu author2 Zhu Chen first3 Val rie last3 Lallemand Breitenbach first4 Hugues last4 de Th title How Acute Promyelocytic Leukaemia Revived Arsenic journal Nature Reviews Cancer year 2002 volume 2 issue 9 pages 705 714 doi 10.1038 nrc887 pmid 12209159 ref References reflist External links http www.homeoint.org clarke k kali ars.htm Materia Medica entry for Fowler s solution MeshName Fowler s solution Category Withdrawn drugs Category Arsenic compounds Category Potassium compounds Category Patent medicines de Fowlersche L sung fr Solution de Fowler it Soluzione di Fowler ...   more details



  1. Co-carcinogen

    A Co carcinogen is a chemical that promotes the effects of a carcinogen in the production of cancer . Usually, the term is used to refer to chemicals that are not carcinogenic on their own. A chemical can be co carcinogenic with other chemicals or with nonchemical carcinogens, such as Ultraviolet UV radiation. For example, sodium arsenite can be administered to mice at a low enough concentration that it does not cause tumors on its own, but it increases the rate of formation and size of tumors formed after UV exposure. ref http www.sciencedirect.com science? ob ArticleURL& udi B6WXH 45BBYF9 22& user 10& rdoc 1& fmt & orig search& sort d&view c& acct C000050221& version 1& urlVersion 0& userid 10&md5 62aba33edf85d3ff6d2259785019f2fc Toby G. Rossman, Ahmed N. Uddin, Fredric J. Burns and Maarten C. Bosland, Arsenite Is a Cocarcinogen with Solar Ultraviolet Radiation for Mouse Skin An Animal Model for Arsenic Carcinogenesis , Toxicology and Applied Pharmacology , Vol. 176, No. 1, pp. 64 71, October 2001. ref A chemical may both have anti carcinogenic properties and yet still be a co carcinogen in combination with some carcinogens. Evidence points to beta carotene being one example of such a compound, which has led researchers to caution against the emphasis on isolated dietary supplements and instead recommend a focus on promoting a diverse diet rich in fruits and vegetables. ref http www.sciencedirect.com science? ob ArticleURL& udi B6T2G 47YHS63 1& user 10& rdoc 1& fmt & orig search& sort d&view c& acct C000050221& version 1& urlVersion 0& userid 10&md5 5ec20f8ed1d6b2c98edf4cb1cdc11dab Moreno Paolinia, Sherif Z. Abdel Rahmanb, Andrea Saponea, Gian Franco Pedullic, Paolo Peroccod, Giorgio Cantelli Fortia, b and Marvin S. Legator, Carotene a cancer chemopreventive agent or a co carcinogen? , Mutation Research Reviews in Mutation Research , Vol. 543, No. 3, pp. 195 200, June 2003. ref References reflist biochem stub oncology stub med toxic stub Category Carcinogens pl ...   more details



  1. ASNA1

    Dual cytoplasmic and nuclear distribution of the novel arsenite stimulated human ATPase hASNA I . journal ... SB title Chromosomal localization and genomic structure of the human arsenite stimulated ATPase hASNA ...   more details



  1. Arsenate reductase (glutaredoxin)

    systems reduction of arsenate to arsenite by human liver arsenate reductase journal Chem. Res. Toxicol ... to arsenate and arsenite journal J. Bacteriol. volume 180 pages 1655&ndash 61 pmid 9537360 ...   more details



  1. Patriarch Nephon I of Constantinople

    Nephon I lang el was the Ecumenical Patriarch of Constantinople from 1310 to 1314 . From Veria , Greece , he was a lover of luxury and ill suited for the position. ref J.M. Hussey, Orthodox Church and the Byzantine Empire , Chapter 8, p. 253, Oxford University Press ref During his time as patriarch the Arsenite schism was healed within the Byzantine Church. Nephon abdicated the throne after four years. ref J.M. Hussey, Orthodox Church and the Byzantine Empire , Chapter 8, p. 254 ref s start succession box before Patriarch Athanasius I of Constantinople Athanasius I title List of Constantinople patriarchs Patriarch of Constantinople years 1310 &ndash 1314 after Patriarch John XIII of Constantinople John XIII s end Patriarchs of Constantinople Notes Reflist Persondata NAME Nephon 01 Of Constantinople, Patriarch ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH DEFAULTSORT Nephon 01 Of Constantinople, Patriarch Category Ecumenical Patriarchs of Constantinople Category People from Imathia Prefecture Category 14th century Byzantine people Byzantine bio stub EasternOrthodoxy bishop stub bg I el fr Niphon de Constantinople ...   more details



  1. Scheele's Green

    copper metaarsenite CuO As sub 2 sub O sub 3 sub , copper arsenite salt CuAsHO sub 3 sub and Cu AsO ...   more details



  1. Ars operon

    Orphan date August 2011 Infobox protein family Symbol ArsA ATPase Name Anion transporting ATPase image width caption Pfam PF02374 Pfam clan CL0023 InterPro SMART PROSITE MEROPS SCOP 1f48 TCDB 3.A.4 OPM family OPM protein CAZy CDD Infobox protein family Symbol ArsB Name ArsB image width caption Pfam PF02040 Pfam clan CL0182 InterPro IPR000802 SMART PROSITE MEROPS SCOP TCDB 3.A.4 OPM family OPM protein CAZy CDD Infobox protein family Symbol ArsC Name ArsC image PDB 1rw1 EBI.jpg width caption yffb pa3664 protein Pfam PF03960 Pfam clan CL0172 InterPro IPR006660 SMART PROSITE MEROPS SCOP 1i9d TCDB OPM family OPM protein CAZy CDD Infobox protein family Symbol ArsD Name ArsD image width caption Pfam PF06953 Pfam clan CL0172 InterPro IPR010712 SMART PROSITE MEROPS SCOP TCDB OPM family OPM protein CAZy CDD In molecular biology, the ars operon is an operon found in several bacteria l taxon. It is required for the detoxification of arsenate, arsenite, and antimonite. ref name pmid7860609 cite journal author Carlin A, Shi W, Dey S, Rosen BP title The ars operon of Escherichia coli confers arsenical and antimonial resistance journal J. Bacteriol. volume 177 issue 4 pages 981 6 year 1995 month February pmid 7860609 pmc 176692 doi url ref This system transports arsenite and antimonite out of the cell biology cell . The pump is composed of two polypeptides, the products of the arsA and arsB genes . This two subunit enzyme produces resistance to arsenite and antimonite. Arsenate, however, must first be Redox reduced to arsenite before it is extruded. A third gene, arsC, expands the Enzyme substrate substrate specificity to allow for arsenate pumping and resistance. ArsC is an approximately 150 residue arsenate reductase that uses redox reduced glutathione GSH to convert arsenate to arsenite with a redox active cysteine residue chemistry residue in the active site . ArsC forms an active quaternary Protein complex complex with GSH, arsenate, and glutaredoxin 1 Grx1 . The three ligands ...   more details



  1. Reinerite

    Infobox mineral name Reinerite category arsenite boxwidth boxbgcolor image caption strunz 04.JA.10 formula Zn sub 3 sub AsO sub 3 sub sub 2 sub symmetry Orthorhombic dipyramidal 2 m 2 m 2 m unit cell a 6.092 ngstr m , b 14.407 , c 7.811 , Z 4, V 685.55, ratio a b c 0.423 1 0.542 molweight color Sky blue, yellow green habit Rough striated pseudohexagonal crystals system Orthorhombic twinning cleavage Good on 110 , 011 and 111 fracture tenacity mohs 5 5.5 luster Vitreous to adamantine refractive n sub sub 1.740 n sub sub 1.790 n sub sub 1.820 opticalprop Biaxial birefringence Maxium 0.080 pleochroism relief Very high streak gravity 4.27 melt fusibility diagnostic solubility diaphaneity Transparent other references ref name Webmin http webmineral.com data Reinerite.shtml Webmineral data ref ref name HBM http www.handbookofmineralogy.org pdfs reinerite.pdf Handbook of Mineralogy ref ref name Mindat http www.mindat.org min 3386.html Mindat.org ref ref name AmMin http www.minsocam.org ammin AM62 AM62 1129.pdf American Mineralogist ref Reinerite is a rare arsenite arsenate III mineral with chemical formula Zn sub 3 sub AsO sub 3 sub sub 2 sub . ref name Mindat ref name HBM It crystallizes in the orthorhombic crystal system . Physical properties Reinerite is most commonly found as a sky blue colored mineral, however, it may also be a light yellowish green color. Reinerite has a relative hardness of 5 to 5.5 on the Mohs Scale which is equivalent to that of a knife blade and or shard of glass. It has a density of 4.27 g cm sup 3 sup , ref name Webmin and it exhibits a nonmetalic luster that may be described as glassy or vitreous. ref Lutgens, Frederick, and Edward Tarbuck. Essentials of Geology. 10th. Upper Saddle River, New Jersey Pearson Prentice Hall, 2009. 42. Print. ref Environment Reinerite develops in dolostone hosted locations. It is known especially from Namibia , Africa, within the mines of Tsumeb . At the Tsumeb location, Reinerite develops within the polymetallic ...   more details



  1. Malignant transformation

    hatnote In genetics, Transformation genetics transformation is also used to describe the incorporation of foreign DNA by bacteria. Malignant transformation is the process by which cells acquire the properties of cancer . This may occur as a primary process in normal tissue, or secondarily as malignant degeneration of a previously existing benign tumor . There are many causes of primary malignant transformation, or tumorigenesis . The underlying commonality is genetic mutation either by inheritance or more commonly by acquiring mutations in one s DNA over time. Although malignant transformation may occur because of changes within the cell, it can be induced by inorganic toxic substances such as cadmium or arsenite and organics such as tobacco specific nitrosamines . It is also thought that some malignant transformations are due to viruses such as the Epstein Barr virus, although this is currently restricted to just a few cancer types. A more common cancer associated with viral infection is cervical cancer , which has been linked to the human papilloma virus . Malignant transformation of cells in a benign tumor may be detected by pathology pathologic examination of tissues. Often the clinical signs and symptoms are suggestive of a malignant tumor. The physician, during the medical history examination, can find that there have been changes in size or patient sensation and, upon direct examination, that there has been a change in the lesion itself. Risk assessment s can be done and are known for certain types of benign tumor which are known to undergo malignant transformation. One of the better known examples of this phenomenon is the progression of a nevus to melanoma . References M.Monti L ulcera cutanea approccio multidisciplinare alla diagnosi ed al trattamento Milano 2000. ISBN 8847000726 9788847000728 . Mazzeo Francesco Trattato di clinica e terapia chirurgica Padova, 2001 ISBN 8829915661 9788829915668. Fishman J.R.A., Parker M.G. Malignancy and chronic wounds Mar ...   more details



  1. List of Superfund sites in the Northern Mariana Islands

    This is a list of Superfund sites in the Northern Mariana Islands designated under the Comprehensive Environmental Response, Compensation, and Liability Act CERCLA environmental law class wikitable sortable border 1 CERCLIS ID Name Location Reason Proposed Listed Construction br completed Partially br deleted Deleted MPD980798318 PCB Warehouse Garapan , Saipan 21 drums of polychlorinated biphenyl wastes and 3 crates of sodium arsenite were removed from the island and disposed of at a facility in the continental United States. ref cite web url http www.epa.gov superfund sites npl nar970.htm title NPL Site Narrative for PCB Warehouse publisher EPA accessdate 2010 02 25 ref ref cite web url http cfpub.epa.gov supercpad cursites csitinfo.cfm?id 0902806 title Superfund Site Progress Profile for PCB Warehouse publisher EPA accessdate 2010 02 25 ref 12 30 1982 09 08 1983 03 07 1986 N A 03 07 1986 See also List of Superfund sites in the United States List of environmental issues List of waste types TOXMAP References reflist External links http www.epa.gov superfund sites query queryhtm nplfin.htm MP EPA list of current Superfund sites in the Northern Mariana Islands http www.epa.gov superfund sites query queryhtm npldel.htm MP EPA list of deleted Superfund sites in the Northern Mariana Islands Superfund sites in the United States Northern Mariana Islands Category Lists of Superfund sites in the United States Northern Mariana Islands Category Environment of the Northern Mariana Islands Category Northern Mariana Islands related lists Superfund ...   more details



  1. Cafarsite

    Infobox mineral name Cafarsite category Arsenites boxwidth boxbgcolor image imagesize caption formula Ca sub 8 sub Ti,Fe sup 2 sup ,Fe sup 3 sup ,Mn sub 6 7 sub AsO sub 3 sub sub 12 sub 4H sub 2 sub O molweight 2,230.31 g strunz 04.JC.05 symmetry Cubic diploidal H M Symbol 2 m 3 unit cell a 15.984 Z 4 color Dark brown habit Cubic octahedral crystals system Cubic crystal system Isometric twinning cleavage fracture Conchoidal tenacity mohs 5 6 luster sub metallic polish refractive n 2.2 opticalprop Isotropic birefringence dispersion pleochroism fluorescence absorption streak Yellow brown gravity 3.9 density melt fusibility diagnostic solubility diaphaneity Translucent to opaque other references ref name Webmin http www.webmineral.com data Cafarsite.shtml Cafarsite Mineral Data from Webmineral ref ref name Mindat http www.mindat.org min 849.html Cafarsite on Mindat.org ref ref name HBM http rruff.geo.arizona.edu doclib hom cafarsite.pdf Handbook of Mineralogy ref Cafarsite Ca sub 8 sub Ti,Fe sup 2 sup ,Fe sup 3 sup ,Mn sub 6 7 sub AsO sub 3 sub sub 12 sub 4H sub 2 sub O is a rare calcium iron arsenite mineral . Manganese and titanium occur with iron in the formula. It was first described in 1966 for an occurrence in the Binn Valley , Valais , Switzerland . Its name is from the composition, ca lcium, f errum iron , and ars enic. ref name Mindat ref name Webmin ref name HBM It has also been reported from Piedmont , Italy and the Hemlo gold mine in the Thunder Bay District, Ontario , Canada. ref name HBM ref name Mindat References reflist Category Oxide minerals Category Cubic minerals mineral stub it Cafarsite ...   more details



  1. Alkalilimnicola

    italic title Taxobox name Alkalilimnicola domain Bacteria phylum Proteobacteria classis Gammaproteobacteria ordo Chromatiales familia Ectothiorhodospiraceae genus Alkalilimnicola binomial authority corrig. Yakimov et al . 2001 ref name sgmjournals1 type species A. halodurans subdivision ranks Species Alkalilimnicola is a genus in the phylum Proteobacteria Bacteria . ref name classificationac Etymology The name Alkalilimnicola derives from New Latin noun alkali from Arabic al qalyi , the ashes of saltwort , soda ash Ancient Greek language Greek noun limnos , pool of standing water, lake Latin suffix cola from Latin noun incola a dweller, inhabitant New Latin grammatical gender masculine gender noun Alcalilimnicola , a dweller of alkaline lakes. ref name main Species The genus contains 2 species, namely ref name main Alkalilimnicola ehrlichii A. ehrlichii Hoeft et al . 2007, New Latin Latin declension genitive case grammatical gender masculine gender noun ehrlichii , of Ehrlich, named in honour of Professor Emeritus Henry Lutz Ehrlich for his broad scientific, teaching and leadership contributions to the field of geomicrobiology, with specific reference to his work on the bacterial oxidation of arsenite. ref name ijs Alkalilimnicola halodurans A. halodurans corrig. Yakimov et al . 2001, Type species of the genus . Ancient Greek language Greek noun hals, halos , ,salt Latin participle adjective durans , enduring New Latin participle adjective halodurans , salt enduring. ref name sgmjournals1 See Also Bacterial taxonomy Microbiology References reflist refs ref name classificationac lpsn classificationac.html Classification of Genera AC ref ref name main lpsn a alkalilimnicola.html Alkalilimnicola ref ref name ijs cite doi 10.1099 ijs.0.64576 0 ref ref name sgmjournals1 http ijs.sgmjournals.org cgi reprint 52 1 5 Notification list. Notification that new names and new combinations have appeared in volume 51, part 6, of the IJSEM ref Category Bacteria Category Prot ...   more details



  1. Arsenate

    oxidizing various fuels while redox reducing arsenates to form arsenite s. The enzyme s involved ...   more details



  1. Arsenous acid

    arsenous acid to the arsenite arsenite ions AsO OH sub 2 sub sup sup , AsO sub 2 sub OH sup 2 sup ...   more details




Articles 1 - 25 of 89          Next


Search   in  
Search for Arsenite in Tutorials
Search for Arsenite in Encyclopedia
Search for Arsenite in Videos
Search for Arsenite in Books
Search for Arsenite in Software
Search for Arsenite in DVDs
Search for Arsenite in Store


Advertisement




Arsenite in Encyclopedia
Arsenite top Arsenite

Home - Add TutorGig to Your Site - Disclaimer

©2011-2013 TutorGig.com. All Rights Reserved. Privacy Statement