Calcium Lanthanum Sulfide is a crystalline solid used as a semiconductor and in photo optic applications.American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia)and follows applicable ASTM testing standards.Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Calcium is a Block S, Group 2, Period 4 element. The number of electrons in each of Calcium's shells is 2, 8, 8, 2 and its electronic configuration is [Ar] 4s2. In its elemental form calcium's CAS number is 7440-70-2. The calcium atom has a radius of 197.4.pm and it's Van der Waals radius is 200.pm. Calcium is a reactive, soft metal. Calcium is a member of the alkaline earth elements. Calcium is an essential metal for living organisms and is non-toxic. Its primary commercial application is in its metallic form as a reducing agent in the production of other metals. In iron and steel production it is added to the melt to remove oxygen, sulfur and carbon. The various calcium compounds have wide application in food, pharmaceutical and cosmetics. It is used in small doses in alloys of copper and beryllium. It is used in dietary supplements and food production because it has been shown to improve bone and dental health. Calcium information, including Technical Data, Safety Data and its High Purity properties, research, applications and other useful facts are discussed here. Calcium was first discovered by Sir Humphrey Davy in 1808.
Lanthanum is a Block F, Group 3, Period 6 element. The number of electrons in each of Lanthanum's shells is 2, 8, 18, 18, 9, 2 and its electronic configuration is [Xe] 5d1 6s2. In its elemental form lanthanum 's CAS number is 7439-91-0. The lanthanum atom has a radius of 187.pm and it's Van der Waals radius is 200.pm. Lanthanum and compounds of Lanthanum are somewhat toxic. Lanthanum is one of the products manufactured and distributed under the tradename AE Rare Earths. Lanthanum is the first element in the rare earth or lanthanide series. It is the model for all the other trivalent rare earths. After cerium, it is the second most abundant of the rare earths. Lanthanum is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder.Lanthanum-rich lanthanide compositions have been used extensively for cracking reactions in FCC catalysts, especially to manufacture low-octane fuel for heavy crude oil. The name Lanthanum originates from the Greek word Lanthaneia which means 'To lie hidden'. See Lanthanum research below.
Sulfur is a Block P, Group 16, Period 3 element. The number of electrons in each of Sulfur's shells is 2, 8, 6 and its electronic configuration is [Ne]3s2 3p4. In its elemental form sulfur's CAS number is 7704-34-9. The sulfur atom has a radius of 100pm and it's Van der Waals radius is 180pm. Sulfur is a crucial element for all life and serves as both fuels and respiratory (oxygen-replacing) materials for simple organisms. In nature, sulfur can be found in hot springs, meteorites, volcanoes, and as galena, gypsum, Epsom salts, and barite. Sulfur, when organically bonded, is a component of all proteins, as the amino acids methionine and cysteine. In organic form, Sulfur is present in the vitamins thiamine and biotin. Sulfur is also a vital part of many enzymes and also in antioxidant molecules like glutathione and thioredoxin.Sulfur is available as compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity). Sulfur has been known since ancient times but was not accepted as an element until 1777. Antoine Lavoisier helped to convince the scientific commuity that sulfus is an element and not a compound. See Sulfur research below.
American Elements semi conducting materials are crystal structures produced from ultra high purity starting materials synthesized by our high purity production facility which includes several large electric muffle furnaces, a tube furnace for hydrogen reduction, 50 gallon glass-lined Pfaudler reactors supported by our analytical laboratory containing X-ray diffraction, SEM, AA, BET surface area, and ICP Spectrometry for trace metals analysis. See a discussion of American Elements Ultra High Purity and Analytical capabilities. See Crystal Growth for processes used to fabricate semiconductor materials, which include:
Crystal "pulling" by the Czochaiski method for production of semiconductor materials
Flux growth and gradient freeze
Directional solidification of fluorites using both the Bridgman-Stockbarger and float zoning techniques
PACKAGING SPECIFICATIONS FOR BULK & RESEARCH QUANTITIES
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.
Activation of alpha(1) -adrenergic receptors stimulate the growth of small mouse cholangiocytes Via calcium-dependent activation of nuclear factor of activated T cells 2 and specificity protein 1.
Alpini G, Franchitto A, Demorrow S, Onori P, Gaudio E, Wise C, Francis H, Venter J, Kopriva S, Mancinelli R, Carpino G, Stagnitti F, Ueno Y, Han Y, Meng F, Glaser S.
Hepatology. 2011 Feb;53(2):628-639. doi: 10.1002/hep.24041. Epub 2011 Jan 3.PMID: 21274883 [PubMed - as supplied by publisher]
Cell Signaling of Angiotensin II on Vascular Tone: Novel Mechanisms.
Cat AN, Touyz RM.
Curr Hypertens Rep. 2011 Jan 29. [Epub ahead of print]PMID: 21274755 [PubMed - as supplied by publisher]
Impact of Selenium on the Leukotriene B(4) Synthesis Pathway during Isoproterenol-Induced Myocardial Infarction in Experimental Rats.
Panicker S, Swathy SS, John F, M I.
Inflammation. 2011 Jan 28. [Epub ahead of print]PMID: 21274744 [PubMed - as supplied by publisher]
Calcium Fructoborate-Potential Anti-inflammatory Agent.
Scorei RI, Rotaru P.
Biol Trace Elem Res. 2011 Jan 28. [Epub ahead of print]PMID: 21274653 [PubMed - as supplied by publisher]
Biochemical characterization of a new type of intracellular PHB depolymerase from Rhodospirillum rubrum with high hydrolytic activity on native PHB granules.
Sznajder A, Jendrossek D.
Appl Microbiol Biotechnol. 2011 Jan 28. [Epub ahead of print]PMID: 21274528 [PubMed - as supplied by publisher]
Calcium Inhibits Dihydropyridine-Stimulated Increases in Opening and Unitary Conductance of a Plant Ca(2+) Channel.
Piñeros MA, Tester M.
J Membr Biol. 2011 Jan 28. [Epub ahead of print]PMID: 21274523 [PubMed - as supplied by publisher]
Expression of the sperm fibrous sheath protein CABYR in human cancers and identification of a-enolase as an interacting partner of CABYR-a.
Tseng YT, Hsia JY, Chen CY, Lin NT, Chong PC, Yang CY.
Oncol Rep. 2011 Jan 27. doi: 10.3892/or.2011.1165. [Epub ahead of print]PMID: 21274509 [PubMed - as supplied by publisher]
Improving Blood Pressure Control in Patients with Diabetes Mellitus and High Cardiovascular Risk.
Elliott HL, Lloyd SM, Ford I, Meredith PA.
Int J Hypertens. 2011 Jan 10;2010:490769.PMID: 21274458 [PubMed - as supplied by publisher]
Long-Term Follow-Up of a Pseudohypoparathyroidism Type 1A Patient with Missense Mutation (Pro115Ser) in Exon 5.
Erdeve SS, Berberoglu M, Siklar Z, Evliyaoglu O, Hiort O, Ocal G.
J Clin Res Pediatr Endocrinol. 2010 Jun;2(2):85-88. Epub 2010 May 7.PMID: 21274345 [PubMed - as supplied by publisher]
Circulating Insulin-like Growth Factor Binding Protein-4 (IGFBP-4) is not Regulated by Parathyroid Hormone and Vitamin D in vivo: Evidence from Children with Rickets.
Bereket A, Cesur Y, Ozkan B, Adal E, Turan S, Hanedan Onan S, Döneray H, Akçay T, Haklar G.
J Clin Res Pediatr Endocrinol. 2010 Mar;2(1):17-20. Epub 2010 Feb 2.PMID: 21274331 [PubMed - as supplied by publisher]
Vitamin D Deficiency Rickets Mimicking Pseudohypoparathyroidism.
Akin L, Kurtoglu S, Yildiz A, Akin MA, Kendirici M.
J Clin Res Pediatr Endocrinol. 2010 Dec;2(4):173-175. Epub 2010 Nov 8.PMID: 21274319 [PubMed - as supplied by publisher]
Nutritional Rickets.
Ozkan B.
J Clin Res Pediatr Endocrinol. 2010 Dec;2(4):137-143. Epub 2010 Nov 1.PMID: 21274312 [PubMed - as supplied by publisher]Related citations
Vitamin D Deficiency in Turkish Mothers and Their Neonates and in Women of Reproductive Age.
Ergür AT, Berberoglu M, Atasay B, Siklar Z, Bilir P, Arsan S, Söylemez F, Ocal G.
J Clin Res Pediatr Endocrinol. 2009 Dec;1(6):266-269. Epub 2009 Nov 3.PMID: 21274307 [PubMed - as supplied by publisher]
The Effect of Vitamin D Treatment on Serum Adiponectin Levels in Children with Vitamin D Deficiency Rickets.
Ozkan B, Döneray H, Keskin H.
J Clin Res Pediatr Endocrinol. 2009 Dec;1(6):262-265. Epub 2009 Nov 2.PMID: 21274306 [PubMed - as supplied by publisher]
Metabolic Bone Disease in the Bariatric Surgery Patient.
Williams SE.
J Obes. 2011;2011:634614. Epub 2010 Dec 28.PMID: 21274274 [PubMed - as supplied by publisher]
Factors Associated With Early Atherosclerosis and Arterial Calcifications in Young Subjects With a Benign Phenotype of Obesity.
Gilardini L, Pasqualinotto L, Di Matteo S, Caffetto K, Croci M, Girola A, Invitti C.
Obesity (Silver Spring). 2011 Jan 27. [Epub ahead of print]PMID: 21273999 [PubMed - as supplied by publisher]
Renal Function in Patients Treated with Cinacalcet for Persistent Hyperparathyroidism after Kidney Transplantation.
Henschkowski J, Bischoff-Ferrari HA, Wüthrich RP, Serra AL.
Kidney Blood Press Res. 2011 Jan 27;34(2):97-103. [Epub ahead of print]PMID: 21273790 [PubMed - as supplied by publisher]
Comparison of Combination Therapy of Olmesartan plus Azelnidipine or Hydrochlorothiazide on Renal and Vascular Damage in SHR/NDmcr-cp Rats.
Nagasu H, Satoh M, Yorimitsu D, Tomita N, Sasaki T, Kashihara N.
Kidney Blood Press Res. 2011 Jan 27;34(2):87-96. [Epub ahead of print]PMID: 21273789 [PubMed - as supplied by publisher]
In vivo remineralization of artificial enamel carious lesions using a mineral-enriched mouthrinse and a fluoride dentifrice: A polarized light microscopic comparative evaluation.
Bansal K, Gauba K, Tewari A, Chawla HS, Sahni A.
J Indian Soc Pedod Prev Dent. 2010 October-December;28(4):264-270.PMID: 21273714 [PubMed - as supplied by publisher]
Antimicrobial activity of different endodontic sealers: An in vitro evaluation.
Saha S, Samadi F, Jaiswal JN, Ghoshal U.
J Indian Soc Pedod Prev Dent. 2010 October-December;28(4):251-257.PMID: 21273712 [PubMed - as supplied by publisher]
Process development for the separation and recovery of Mo and Co from chloride leach liquors of petroleum refining catalyst by solvent extraction.
Banda R, Sohn SH, Lee MS.
J Hazard Mater. 2012 Jan 9. [Epub ahead of print]
PMID:
22336581
[PubMed - as supplied by publisher]
Selective cleavage of pepsin by molybdenum metallopeptidase.
Yenjai S, Malaikaew P, Liwporncharoenvong T, Buranaprapuk A.
Biochem Biophys Res Commun. 2012 Feb 5. [Epub ahead of print]
PMID:
22330807
[PubMed - as supplied by publisher]
Iminopyridine Complexes of Manganese, Rhenium, and Molybdenum Derived from Amino Ester Methylserine and Peptides Gly-Gly, Gly-Val, and Gly-Gly-Gly: Self-Assembly of the Peptide Chains.
Alvarez CM, García-Rodríguez R, Miguel D.
Inorg Chem. 2012 Feb 13. [Epub ahead of print]
PMID:
22329711
[PubMed - as supplied by publisher]
Low-Temperature, Solution-Processed MoO(x) for Efficient and Stable Organic Solar Cells.
Zilberberg K, Gharbi H, Behrendt A, Trost S, Riedl T.
ACS Appl Mater Interfaces. 2012 Feb 15. [Epub ahead of print]
PMID:
22324481
[PubMed - as supplied by publisher]
A molecular MoS? edge site mimic for catalytic hydrogen generation.
Karunadasa HI, Montalvo E, Sun Y, Majda M, Long JR, Chang CJ.
Science. 2012 Feb 10;335(6069):698-702.
PMID:
22323816
[PubMed - in process]
The use of total reflectance X-ray fluorescence (TXRF) for the determination of metals in the pharmaceutical industry.
Antosz FJ, Xiang Y, Diaz AR, Jensen AJ.
J Pharm Biomed Anal. 2012 Jan 16. [Epub ahead of print]
PMID:
22316622
[PubMed - as supplied by publisher]
Kinetic Resolution of Planar-Chiral (?(6) -Arene)Chromium Complexes by Molybdenum-Catalyzed Asymmetric Ring-Closing Metathesis.
Ogasawara M, Wu WY, Arae S, Watanabe S, Morita T, Takahashi T, Kamikawa K.
Angew Chem Int Ed Engl. 2012 Feb 3. doi: 10.1002/anie.201108292. [Epub ahead of print]
PMID:
22308166
[PubMed - as supplied by publisher]
Measurement of mass attenuation coefficients of Rhizophora spp. binderless particleboards in the 16.59-25.26keV photon energy range and their density profile using x-ray computed tomography.
Marashdeh MW, Bauk S, Tajuddin AA, Hashim R.
Appl Radiat Isot. 2012 Jan 20. [Epub ahead of print]
PMID:
22304963
[PubMed - as supplied by publisher]
Nitrite and Nitrite Reductases: From Molecular Mechanisms to Significance in Human Health and Disease.
Castiglione N, Rinaldo S, Giardina G, Stelitano V, Cutruzzolà F.
Antioxid Redox Signal. 2012 Feb 5. [Epub ahead of print]
PMID:
22304560
[PubMed - as supplied by publisher]
Molybdenum(vi) catalysts obtained from ?(3)-allyl dicarbonyl precursors: Synthesis, characterization and catalytic performance in cyclooctene epoxidation.
Gamelas CA, Gomes AC, Bruno SM, Almeida Paz FA, Valente AA, Pillinger M, Romão CC, Gonçalves IS.
Dalton Trans. 2012 Feb 2. [Epub ahead of print]
PMID:
22302175
[PubMed - as supplied by publisher]
Field-Effect Tunneling Transistor Based on Vertical Graphene Heterostructures.
Britnell L, Gorbachev RV, Jalil R, Belle BD, Schedin F, Mishchenko A, Georgiou T, Katsnelson MI, Eaves L, Morozov SV, Peres NM, Leist J, Geim AK, Novoselov KS, Ponomarenko LA.
Science. 2012 Feb 2. [Epub ahead of print]
PMID:
22300848
[PubMed - as supplied by publisher]
Spectroscopic reflectometry of mirror surfaces during plasma exposure.
Wisse M, Eren B, Marot L, Steiner R, Meyer E.
Rev Sci Instrum. 2012 Jan;83(1):013509.
PMID:
22299953
[PubMed - in process]
[Absorption characteristics of molybdenum by reed and cattail].
Lian JJ, Xu SG, Han CW.
Huan Jing Ke Xue. 2011 Nov;32(11):3335-40. Chinese.
PMID:
22295632
[PubMed - in process]
Conserved Signal Peptide Recognition Systems across the Prokaryotic Domains.
Coulthurst SJ, Dawson A, Hunter WN, Sargent F.
Biochemistry. 2012 Feb 13. [Epub ahead of print]
PMID:
22289056
[PubMed - as supplied by publisher]
Two methods can simultaneously display both intramuscular nerves and blood vessels.
Yu DZ, Liu AT, Zhang JL, Dang RS, Chen G, Liu BL, Han T, Yi J, Nagasao T, Jiang H.
Plast Reconstr Surg. 2012 Feb;129(2):401-11.
PMID:
22286423
[PubMed - in process]
Synthesis, characterization and biological activities of some new chromium molybdenum and tungsten complexes with 2,6-diaminopyridine.
Soliman AA, Ali SA, Marei AH, Nassar DH.
Spectrochim Acta A Mol Biomol Spectrosc. 2012 Apr;89:329-32. Epub 2011 Dec 30.
PMID:
22286054
[PubMed - in process]
Tuning the Photochromic Properties of Molybdenum Bisphosphonate Polyoxometalates.
El Moll H, Dolbecq A, Mbomekalle IM, Marrot J, Deniard P, Dessapt R, Mialane P.
Inorg Chem. 2012 Jan 27. [Epub ahead of print]
PMID:
22283587
[PubMed - as supplied by publisher]
In vivo evaluation of defined polished titanium surfaces to prevent soft tissue adhesion.
Hayes JS, Welton JL, Wieling R, Richards RG.
J Biomed Mater Res B Appl Biomater. 2012 Jan 27. doi: 10.1002/jbm.b.31967. [Epub ahead of print]
PMID:
22282225
[PubMed - as supplied by publisher]
Reaction dynamics of Mo + O(2) ? MoO + O studied by a crossed-beam velocity map imaging technique.
Honma K, Matsumoto Y.
J Chem Phys. 2012 Jan 21;136(3):034301.
PMID:
22280754
[PubMed - in process]
A new class of electrocatalysts for hydrogen production from water electrolysis: metal monolayers supported on low-cost transition metal carbides.
Esposito DV, Hunt ST, Kimmel YC, Chen JG.
J Am Chem Soc. 2012 Feb 15;134(6):3025-33. Epub 2012 Feb 1.
PMID:
22280370
[PubMed - in process]
Plasma Restoration of Endothelial Glycocalyx in a Rodent Model of Hemorrhagic Shock.
Kozar RA, Peng Z, Zhang R, Holcomb JB, Pati S, Park P, Ko TC, Paredes A.
Anesth Analg. 2011 Feb 23. [Epub ahead of print]
PMID:
21346161
[PubMed - as supplied by publisher]
Self-assembly of a sulphur-terminated graphene nanoribbon within a single-walled carbon nanotube.
Chuvilin A, Bichoutskaia E, Gimenez-Lopez MC, Chamberlain TW, Rance GA, Kuganathan N, Biskupek J, Kaiser U, Khlobystov AN.
Nat Mater. 2011 Aug 7. doi: 10.1038/nmat3082. [Epub ahead of print]
PMID:
21822259
[PubMed - as supplied by publisher]
Crystallization and preliminary X-ray analysis of the yeast tRNA-thiouridine modification protein 1 (Tum1p).
Qiu R, Wang F, Liu M, Yang Z, Wu T, Ji C.
Acta Crystallogr Sect F Struct Biol Cryst Commun. 2011 Aug 1;67(Pt 8):953-5. Epub 2011 Jul 27.
PMID:
21821903
[PubMed - in process]
Characterization of Bacillus thuringiensis L-isoleucine dioxygenase toward the production of useful amino acids.
Hibi M, Kawashima T, Kodera T, Smirnov SV, Sokolov PM, Sugiyama M, Shimizu S, Yokozeki K, Ogawa J.
Appl Environ Microbiol. 2011 Aug 5. [Epub ahead of print]
PMID:
21821743
[PubMed - as supplied by publisher]
Characterization of the sulfurtransferase family from Oryza sativa L.
Guretzki S, Papenbrock J.
Plant Physiol Biochem. 2011 Jul 23. [Epub ahead of print]
PMID:
21821426
[PubMed - as supplied by publisher]
Development of a small-scale bioreactor method to monitor the molecular diversity and environmental impacts of bacterial biofilm communities from an acid mine drainage impacted creek.
Cole M, Wrubel J, Henegan P, Janzen C, Holt J, Tobin T.
J Microbiol Methods. 2011 Jul 28. [Epub ahead of print]
PMID:
21821067
[PubMed - as supplied by publisher]
In situ incorporation of nickel nanoparticles into the mesopores of MCM-41 by manipulation of solvent-solute interaction and its activity toward adsorptive desulfurization of gas oil.
Samadi-Maybodi A, Teymouri M, Vahid A, Miranbeigi A.
J Hazard Mater. 2011 Jul 6. [Epub ahead of print]
PMID:
21820806
[PubMed - as supplied by publisher]
Stearoyl-CoA desaturase is an essential enzyme for the parasitic protist Trypanosoma brucei.
Alloatti A, Gupta S, Gualdrón-López M, Nguewa PA, Altabe SG, Deumer G, Wallemacq P, Michels PA, Uttaro AD.
Biochem Biophys Res Commun. 2011 Jul 28. [Epub ahead of print]
PMID:
21820408
[PubMed - as supplied by publisher]
The use of multi-element stable isotope analysis to monitor the origin of chondroitin sulfates.
Thomas F, Jamin E, Shimoo K, Nagao J, Osaki Y, Granier C.
Rapid Commun Mass Spectrom. 2011 Sep 15;25(17):2533-7. doi: 10.1002/rcm.5159.
PMID:
21818814
[PubMed - in process]
Sulphur isotopes in animal hair track distance to sea.
Zazzo A, Monahan FJ, Moloney AP, Green S, Schmidt O.
Rapid Commun Mass Spectrom. 2011 Sep 15;25(17):2371-8. doi: 10.1002/rcm.5131.
PMID:
21818798
[PubMed - in process]
Experimental and Theoretical Evidence of Aromatic Behavior in Heterobenzene-Like Molecules with Metal-Metal Multiple Bonds.
Fang W, He Q, Tan ZF, Liu CY, Lu X, Murillo CA.
Chemistry. 2011 Aug 4. doi: 10.1002/chem.201003693. [Epub ahead of print]
PMID:
21818792
[PubMed - as supplied by publisher]
Rhodovulum phaeolacus sp. nov. a phototrophic alphaproteobacterium isolated from a brown pond.
Venkata Naga Satya Lakshmi K, Sasikala C, Venkata Ramana V, Veera Venkata Ramaprasad E, Venkata Ramana C.
J Gen Appl Microbiol. 2011;57(3):145-51.
PMID:
21817826
[PubMed - in process]
Comparative data on effects of leading pretreatments and enzyme loadings and formulations on sugar yields from different switchgrass sources.
Wyman CE, Balan V, Dale BE, Elander RT, Falls M, Hames B, Holtzapple MT, Ladisch MR, Lee YY, Mosier N, Pallapolu VR, Shi J, Thomas SR, Warner RE.
Bioresour Technol. 2011 Jun 21. [Epub ahead of print]
PMID:
21816612
[PubMed - as supplied by publisher]
Target loads of atmospheric sulfur deposition for the protection and recovery of acid-sensitive streams in the Southern Blue Ridge Province.
Sullivan TJ, Cosby BJ, Jackson WA.
J Environ Manage. 2011 Aug 2. [Epub ahead of print]
PMID:
21816535
[PubMed - as supplied by publisher]
Differential effects of a post-anthesis fertilizer regimen on the wheat flour proteome determined by quantitative 2-DE.
Altenbach SB, Tanaka CK, Hurkman WJ, Whitehand LC, Vensel WH, Dupont FM.
Proteome Sci. 2011 Aug 4;9(1):46. [Epub ahead of print]
PMID:
21816081
[PubMed - as supplied by publisher]
Comparative toxicity of arsenic metabolites in human bladder cancer EJ-1 cells.
Naranmandura H, Michael CW, Xu S, Lee J, Leslie E, Weinfeld M, Le XC.
Chem Res Toxicol. 2011 Aug 4. [Epub ahead of print]
PMID:
21815631
[PubMed - as supplied by publisher]
The Effects of Different Garlic-derived Allyl Sulfides on Peroxidative Processes and Anaerobic Sulfur Metabolism in Mouse Liver.
Iciek MB, Kowalczyk-Pachel D, Kwiecien I, Dudek MB.
Phytother Res. 2011 Aug 4. doi: 10.1002/ptr.3572. [Epub ahead of print]
PMID:
21815229
[PubMed - as supplied by publisher]
A combined model of hepatic polyamine and sulfur amino acid metabolism to analyze S-adenosyl methionine availability.
Reyes-Palomares A, Montañez R, Sánchez-Jiménez F, Medina MA.
Amino Acids. 2011 Aug 4. [Epub ahead of print]
PMID:
21814788
[PubMed - as supplied by publisher]
Microbial gene functions enriched in the Deepwater Horizon deep-sea oil plume.
Lu Z, Deng Y, Van Nostrand JD, He Z, Voordeckers J, Zhou A, Lee YJ, Mason OU, Dubinsky EA, Chavarria KL, Tom LM, Fortney JL, Lamendella R, Jansson JK, D'haeseleer P, Hazen TC, Zhou J.
ISME J. 2011 Aug 4. doi: 10.1038/ismej.2011.91. [Epub ahead of print]
PMID:
21814288
[PubMed - as supplied by publisher]
1,1'-(3-Methyl-4-phenylthieno[2,3-b]thiophene-2,5-diyl)diethanone as a Building Block in Heterocyclic Synthesis. Novel Synthesis of Some Pyrazole and Pyrimidine Derivatives.
Mabkhot YN, Al-Majid AM, Barakat A, Alshahrani S, Siddiqui Y.
Molecules. 2011 Aug 3;16(8):6502-11.
PMID:
21814162
[PubMed - in process]
Towards the Growth of an Aligned Single-Layer MoS2 Film.
Kim D, Sun D, Lu W, Cheng Z, Zhu Y, Le D, Rahman TS, Bartels L.
Langmuir. 2011 Aug 3. [Epub ahead of print]
PMID:
21812475
[PubMed - as supplied by publisher]
Proud sponsors of Aeromat 2012. Please join us and our customers & co-sponsors Boeing and ATI on
June 18-20, 2012
in Charlotte, North Carolina
Calcium Lanthanum Sulfide is a crystalline solid used as a semiconductor and in photo optic applications.American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia)and follows applicable ASTM testing standards.Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Calcium is a Block S, Group 2, Period 4 element. The number of electrons in each of Calcium's shells is 2, 8, 8, 2 and its electronic configuration is [Ar] 4s2. In its elemental form calcium's CAS number is 7440-70-2. The calcium atom has a radius of 197.4.pm and it's Van der Waals radius is 200.pm. Calcium is a reactive, soft metal. Calcium is a member of the alkaline earth elements. Calcium is an essential metal for living organisms and is non-toxic. Its primary commercial application is in its metallic form as a reducing agent in the production of other metals. In iron and steel production it is added to the melt to remove oxygen, sulfur and carbon. The various calcium compounds have wide application in food, pharmaceutical and cosmetics. It is used in small doses in alloys of copper and beryllium. It is used in dietary supplements and food production because it has been shown to improve bone and dental health. Calcium information, including Technical Data, Safety Data and its High Purity properties, research, applications and other useful facts are discussed here. Calcium was first discovered by Sir Humphrey Davy in 1808.
Lanthanum is a Block F, Group 3, Period 6 element. The number of electrons in each of Lanthanum's shells is 2, 8, 18, 18, 9, 2 and its electronic configuration is [Xe] 5d1 6s2. In its elemental form lanthanum 's CAS number is 7439-91-0. The lanthanum atom has a radius of 187.pm and it's Van der Waals radius is 200.pm. Lanthanum and compounds of 
Lanthanum are somewhat toxic. Lanthanum is one of the products manufactured and distributed under the tradename AE Rare Earths
. Lanthanum is the first element in the rare earth or lanthanide series. It is the model for all the other trivalent rare earths. After cerium, it is the second most abundant of the rare earths. Lanthanum is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder.Lanthanum-rich lanthanide compositions have been used extensively for cracking reactions in FCC catalysts, especially to manufacture low-octane fuel for heavy crude oil. The name Lanthanum originates from the Greek word Lanthaneia which means 'To lie hidden'. See Lanthanum research below.
Sulfur is a Block P, Group 16, Period 3 element. The number of electrons in each of Sulfur's shells is 2, 8, 6 and its electronic configuration is [Ne]3s2 3p4. In its elemental form sulfur's CAS number is 7704-34-9. The sulfur atom has a radius of 100pm and it's Van der Waals radius is 180pm. Sulfur is a crucial element for all life and serves as both fuels and respiratory (oxygen-replacing) materials for simple organisms. In nature, sulfur can be found in hot springs, meteorites, volcanoes, and as galena, gypsum, Epsom salts, and barite. Sulfur, when organically bonded, is a component of all proteins, as the amino acids methionine 
and cysteine. In organic form, Sulfur is present in the vitamins thiamine and biotin. Sulfur is also a vital part of many enzymes and also in antioxidant molecules like glutathione and thioredoxin.Sulfur is available as compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity). Sulfur has been known since ancient times but was not accepted as an element until 1777. Antoine Lavoisier helped to convince the scientific commuity that sulfus is an element and not a compound. See Sulfur research below. 
