Los datos de abundancia de carbonatos microbianos arrecifales (Kiessling, 2002) muestran una tendencia oscilante y de descenso a lo largo del Fanerozoico que, muy ampliamente, varia inversamente ... saturacion calculado para el agua del mar. Los carbonatos microbianos arrecifales han respondido a la diversidad de ... baja y el estado de saturacion alto, los carbonatos microbianos incrementaron; por ejemplo, durante el Cambrico-Ordovicico ... alta y el estado de saturacion bajo, los carbonatos microbianos disminuyeron; por ejemplo, en el Carbonifero superior, ...
Tópico(s): Methane Hydrates and Related Phenomena
2005 - | Revista española de micropaleontología
A. Tutass, Melanie Klöpfer, H. Hückstädt, U. Cornelissen, Heiner Homborg,
... Tri(tetra(n-butyl)ammonium)-cis-(nido〈di(carbonato(O, O'))undekaaquamethoxid〉tetraphenylporphyrinato(2-)zirconat(IV) (7), ... ZrIV über die endo-O-Atome der chelatisierenden Carbonato-Liganden ein supramolekulares nestartiges nido〈(O2CO)2(H2O) ... Et4N)2CO3 in Dichlormethan Di(tetraethylammonium)-cis-di(carbonato(O, O')phthalocyaninato(2-)zirconat(IV) (5). cis[ ... um 0, 26Å länger als in den zweizähnigen Carbonato-Liganden in 5 und 7. 9 und 10a ... ZrIV/HfIV with Hydroxo, Chloro, (Di)Phenolato, (Hydrogen)Carbonato, and (Amino)Carboxylato Ligands Crystals of tetra(n- ...
Tópico(s): Metal-Catalyzed Oxygenation Mechanisms
2002 - Wiley | Zeitschrift für anorganische und allgemeine Chemie
Yuji Arai, M.K. McBeath, John Bargar, Jennifer L. Joye, James A. Davis,
... is pH dependent. At pH 8.8, bis-carbonato inner-sphere and tris-carbonato outer-sphere surface species are present. At pH 7, bis- and non-carbonato inner-sphere surface species co-exist, and the fraction of bis-carbonato species increases slightly with increasing I (0.1– ... M). At pH 5.3, U(VI) non-carbonato bidentate mononuclear surface species predominate (69%). A triple ... predominance and from bond-valence calculations. The bis-carbonato species required a distribution of surface charge between ... adsorption data. This research indicates that U(VI)-carbonato ternary species on poorly crystalline aluminosilicate mineral surfaces ...
Tópico(s): Radioactivity and Radon Measurements
2006 - Elsevier BV | Geochimica et Cosmochimica Acta
E. Baraniak, H. C. Freeman, J. M. James, C. E. Nockolds,
... atom is cis-aquo, trans-imidazole, and the carbonato-group functions as a bidentate chelate. The O– ... The metal–donor bond lengths are CoII–O(carbonato) 2·143(5), CoII–(water) 2·166(6), ... linked in chains by pairs of OH2⋯O(carbonato) hydrogen bonds, with N(imidazole)–H⋯O(carbonato) and OH2⋯O(carbonato) hydrogen bonds between adjacent chains. Magnetic moments, u. ...
Tópico(s): Magnetism in coordination complexes
1970 - Royal Society of Chemistry | Journal of the Chemical Society A Inorganic Physical Theoretical
Tara P. Dasgupta, G. M. Harris,
... and mechanism of aquation and formation reactions of carbonato complexes. 14. Base-catalyzed carbonato ring opening of carbonato (.beta.,.beta.',.beta."-triaminotriethylamine) cobalt(III) perchlorate and ...
Tópico(s): Mass Spectrometry Techniques and Applications
1978 - American Chemical Society | Inorganic Chemistry
... 2. X-ray structural studies of (.mu.-monomethyl carbonato)(1,4,8,11-tetraazacyclotetradecane)zinc(II) perchlorate, bis(.mu.-monomethyl carbonato)tris[(1,4,8,12-tetraazacyclopentadecane)zinc(II)] perchlorate, and (monomethyl carbonato)(1,4,8,11-tetramethyl-1,4,8, ...
Tópico(s): Metal-Organic Frameworks: Synthesis and Applications
1985 - American Chemical Society | Inorganic Chemistry
Shinji Shimoda, Takaaki Aoba, E.C. Moreno, Yasuo Miake,
... enamel mineral corresponds to that of a calcium carbonato-apatite. For insight to be gained into the precipitation of carbonato-apatites having specific properties (crystal size, morphology, and ... 3 2- competition) yielded only the B-type carbonato-apatite. It was also ascertained that the size and morphology of the carbonato-apatites, assessed by specific surface area determination and ... crystals, precipitated initially, grew into large rod-like carbonato-apatites having a symmetric-hexagonal cross-section. In ...
Tópico(s): Bone Tissue Engineering Materials
1990 - SAGE Publishing | Journal of Dental Research
Produção Nacional
Daniel Andrade de Siqueira Franco, W. Bettiol,
... não apresentaram efeito de sinergismo, exceto a mistura carbonato de Na + ácido bórico. Carbonato de Na e ácido bórico controlaram a doença ... as misturas de bicarbonato de sódio + ácido bórico, carbonato de Na + carbonato de K, carbonato de Na + sorbato de K, bicarbonato de Na + carbonato de Na, controlando 92; 77; 81; 77; 75 ...
Tópico(s): Plant Pathogens and Fungal Diseases
2002 - Sociedade Brasileira de Fruticultura | Revista Brasileira de Fruticultura
... sido documentadas en detalle en Arabia Saudi. Los carbonatos de la Formacion Khuff, depositados en ambientes marino ... sp. cf. fragilis y Cayeuxia sp. En los carbonatos del Jurasico medio de la Formacion Tuwaiq Mountain se encuentran Clypeina sulcata y Thaumatoporella parvovesiculifera. Los carbonatos del Oxfordiense, Jurasico superior, de la parte alta ... Clypeina sulcata, Pseudoclypeina distomensis y Thaumatoporella parvovesiculifera. Los carbonatos de aguas muy someras a moderadamente profundas del ...
Tópico(s): Marine and coastal plant biology
2005 - | Revista española de micropaleontología
John Bargar, Rebecca Reitmeyer, James A. Davis,
... may be controlled by adsorption of U(VI)−carbonato complexes on oxide minerals. The existence of such ... existence, structures, and compositions of ⋮FeOsurface−U(VI)−carbonato complexes on hematite throughout the pH range of ... uptake under conditions relevant to aquifers. U(VI)−carbonato complexes were found to be the predominant adsorbed ... postulated based on analogy to aqueous U(VI)−carbonato complexes, which are trace constituents at pH < 6. ... be inferred from aqueous species. By extension, adsorbed carbonato complexes may be of major importance to the ...
Tópico(s): Radioactivity and Radon Measurements
1999 - American Chemical Society | Environmental Science & Technology
Thomas R. Criswell, B. H. Klanderman, Donald C. Batesky,
... of p,[pacute]-disubstituted anils containing an alkyl carbonato terminal substituent have been prepared. Numerous examples of ... in which, X in Formula I is alkyl carbonato and Y is alkoxy, acyloxy, alkyl keto, or alkyl carbonato, or with X and Y interchanged, have been ... corresponding data for anils not containing an alkyl carbonato terminal substituent.
Tópico(s): Supramolecular Chemistry and Complexes
1973 - | Molecular crystals and liquid crystals
A. M. GREENAWAY, Tara P. Dasgupta, Kanayathu Koshy, Garfield G. Sadler,
The i.r. spectra of several new carbonato complexes of cobalt(III) are reported and it has been found that the bridging carbonato ligand can be distinguished from the bidentate species ... r. spectral data for a large variety of carbonato complexes a strong correlation has been found between the angular distortion (from D3h) within the carbonato ligand and the separation between the two highest ...
Tópico(s): Chemical Thermodynamics and Molecular Structure
1986 - Pergamon Press | Spectrochimica Acta Part A Molecular Spectroscopy
Anthony J. Di Pasqua, Corey R. Centerwall, Deborah J. Kerwood, James C. Dabrowiak,
... fluid, cytosol, and culture medium, to produce platinum-carbonato and -hydroxo complexes. Using [(1)H-(15)N] ... platinum species, as well as other hydroxo and carbonato species, some of which may be dinuclear complexes, are produced. Furthermore, we show that the carbonato species cis-[Pt(CO(3))(OH)(NH(3))( ... the conditions under which carboplatin and cisplatin form carbonato and aqua/hydroxo species in carbonate media.
Tópico(s): Organometallic Complex Synthesis and Catalysis
2008 - American Chemical Society | Inorganic Chemistry
Produção Nacional
Revisado por pares
José Humberto Vilar da Silva, Valdeci José dos Santos,
... fosfato bicálcico à vontade; e 4 - MF mais carbonato de cálcio à vontade. Durante o segundo ciclo ... de produção. Durante a MF, o uso de carbonato de cálcio resultou em maiores peso e porcentagem ... No período subseqüente à MF, o tratamento com carbonato de cálcio melhorou a produção de ovos em ... controle. Estes resultados sugerem que o uso do carbonato de cálcio, durante a muda forçada, foi mais ...
Tópico(s): Livestock and Poultry Management
2000 - Sociedade Brasileira de Zootecnia | Revista Brasileira de Zootecnia
Zong‐Wan Mao, Frank W. Heinemann, Günther Liehr, Rudi van Eldik,
A series of carbonato complexes was isolated in the reaction of [ML2(H2O)]2+ (M = Cu(II), Zn(II), L = bpy (2,2′- ... phen (1,10-phenanthroline) with HCO3−. Two monomeric carbonato Cu(II) complexes with different bidentate distortion, [Cu( ... Cu(phen)2(CO3)]·11H2O, and three binuclear carbonato complexes with four different bridging modes, {[Cu(phen) ... Zn(bpy)2]2+ revealed formation of polynuclear carbonato complexes in solution. Complex-formation kinetics of [CuL2( ... phen)2OCO2H]+, to form the pseudo-octahedral bidentate carbonato complexes [Cu(bpy)2O2CO] and [Cu(phen)2O2CO], ...
Tópico(s): Crystallography and molecular interactions
2001 - Royal Society of Chemistry | Journal of the Chemical Society Dalton Transactions
Leandro Alberto Páramo Aguilera, José Alberto Narváez-Zapata, Benjamín Otto Ortega Morales,
... de ureasa y la producción de cristales de carbonato de calcio en placa Petry con LB enriquecido con carbonato de calcio al 0.2 %. Los cristales fueron ... resultan también adecuados en cuanto a bioprecipitación de carbonatos, destacando las cepas IIIS4 (Bacillus megaterium), IS5 (Bacillus ... procesos de biorrestauración mediante bioprecipitación de cristales de carbonato de calcio y debido a que se obtuvo ...
Tópico(s): Biofuel production and bioconversion
2015 - Universidad Nacional de Ingeniería | Nexo Revista Científica
Monotosh Mondal, Júlia Mayans, Ashutosh Ghosh,
... in a new µ4-κ2:κ2:ƞ1:ƞ1-carbonato coordination mode to Ni(II). Involvement of this ... of NNO donor ligands for the synthesis of carbonato bridged polynuclear compounds by spontaneous atmospheric CO2 fixation ... environment in 1 with phenoxido and hexadentate µ4-carbonato bridging. Variable temperature magnetic measurements showed overall antiferromagnetic ... of the complex has been explained considering the carbonato and phenoxido bridging angles.
Tópico(s): Carbon Dioxide Capture Technologies
2019 - Elsevier BV | Inorganica Chimica Acta
Tara P. Dasgupta, G. M. Harris,
... and mechanism of aquation and formation reactions of carbonato complexes. 13. Acid-catalyzed aquation of (.alpha..beta.S)-carbonato (tetraethylenepentamine) cobalt(III) ion and carbon dioxide uptake ...
Tópico(s): Chemical and Physical Properties in Aqueous Solutions
1978 - American Chemical Society | Inorganic Chemistry
Tara P. Dasgupta, G. M. Harris,
... and mechanism of aquation and formation reactions of carbonato complexes. 11. Carbon dioxide uptake and intramolecular carbonato ligand chelation in aqueous solution of cis- and ...
Tópico(s): Lanthanide and Transition Metal Complexes
1977 - American Chemical Society | Journal of the American Chemical Society
Tara P. Dasgupta, G. M. Harris,
... and mechanism of aquation and formation reactions of carbonato complexes. VIII. Carbon dioxide uptake and intramolecular carbonato ligand chelation in aqueous solution of diaquo(.beta.,. ...
Tópico(s): Photochemistry and Electron Transfer Studies
1975 - American Chemical Society | Journal of the American Chemical Society
Rudi van Eldik, Tara P. Dasgupta, G. M. Harris,
... and mechanism of aquation and formation reactions of carbonato complexes. IX. Aquation of .alpha.- and .beta.-cis-carbonato(ethylenediaminediacetato)cobaltate(III) ions in strongly acidic solutionR. ...
Tópico(s): Surfactants and Colloidal Systems
1975 - American Chemical Society | Inorganic Chemistry
Tara P. Dasgupta, G. M. Harris,
... and mechanism of aquation and formation reactions of carbonato complexes. VII. Acid-catalyzed aquation of carbonato(nitrilotriacetato)cobaltate(III) ionT. P. Dasgupta and G. ...
Tópico(s): Surfactants and Colloidal Systems
1974 - American Chemical Society | Inorganic Chemistry
Karl Wieghardt, Wilfried Schmidt, Bernhard Nuber, Boris Prikner, Johannes Weiß,
... Lösung aus 6 mit Carbonat-Ionen der μ-Carbonato-Komplex 7 entsteht. Novel μ-Hydroxo-Transition Metal ... Rhodium(III) Containing a μ-Acetato- and μ-Carbonato-Bridge. The Structure of the trans-Diaqua-di- ... 6 reacts with carbonate ions forming a μ-carbonato complex 7.
Tópico(s): Metal complexes synthesis and properties
1980 - Wiley | Chemische Berichte
Eric C. Niederhoffer, Arthur E. Martell, Phil Rudolf, Abraham Clearfield,
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructures of (carbonato)bis(2,2'-bipyridine)cobalt(III) and (carbonato)bis(1,10-phenanthroline)cobalt(III) complexesEric C. Niederhoffer, Arthur E. Martell, Phil ...
Tópico(s): Copper Interconnects and Reliability
1982 - American Chemical Society | Inorganic Chemistry
Melvyn Rowen Churchill, G.M. Davies, Mohamed A. El-Sayed, John P. Hutchinson,
... ISSUEPREVArticleNEXTSynthesis, physical properties and structural characterization of .mu.-carbonato-dicopper(II) complexes. 3. Isolation of a racemic crystal form of .mu.-carbonato-dichlorobis(N,N,N',N'-tetramethyl-1,3- ...
Tópico(s): Crystal structures of chemical compounds
1982 - American Chemical Society | Inorganic Chemistry
Kenshi Tsuji, Shuhei Fujinami, Muraji Shibata,
Abstract Five carbonato complexes, [Co(CO3)(ox)(tn)]−, cis-[Co(CO3)(ox)(py)2]−, cis·cis-[Co(CO3)(NH3)2(py) ... and those of diaqua complexes derived from the carbonato complexes have been measured. The CD spectral comparison ... of the Cotton peak between each of the carbonato complexes and the corresponding diaqua complex. Based on ...
Tópico(s): Computational Drug Discovery Methods
1981 - Oxford University Press | Bulletin of the Chemical Society of Japan
G.A. Van Albada, I. Mutikainen, Olivier Roubeau, U. Turpeinen, J. Reedijk,
... a CO2 atmosphere, with sodium hydroxide added, the carbonato-bridged triangular trinuclear compound [Cu3(dmbipy)6(μ3- ... via the oxygen atoms from the symmetrically bridging carbonato group, resulting in a triangular array of copper ... groups and the oxygen atom of the bridging carbonato group (Cu–N/O distances about 2.0 ...
Tópico(s): Metal-Catalyzed Oxygenation Mechanisms
2002 - Elsevier BV | Inorganica Chimica Acta
Hao Zhang, Christopher Andrekopoulos, Joy Joseph, Karunakaran Chandran, Hakim Karoui, John P. Crow, Balaraman Kalyanaraman,
... Bovine SOD1 was obtained from Roche Diagnostics. Pentammine carbonato complex of Co(III) was synthesized according to ... 1 mg/ml) was mixed with the pentammine carbonato complex of Co(III) (4 mm) in a ... was obtained from photolysis studies using the pentamine carbonato complex of cobalt(III) (7Liochev S.I. Fridovich ... 95: 3116-3121Google Scholar). Irradiation of the pentammine carbonato complex of Co(III) in the presence of ...
Tópico(s): Neuroinflammation and Neurodegeneration Mechanisms
2003 - Elsevier BV | Journal of Biological Chemistry
Víctor Lorenzo Sellarés, José‐Vicente Torregrosa,
... Comenzar con captores de fosforo de contenido calcico (carbonato o acetato calcico), que ademas proporcionan calcio si ... Ca++ al dia. � Los mas empleados son el carbonato y el acetato calcico. El acetato calcico muestra un poder captor similar al carbonato calcico pero con una menor sobrecarga de calcio, ... no tiene la aprobacion en estadios predialisis. � El Carbonato de Lantano se ha comercializado recientemente en Espana, ...
Tópico(s): Heterotopic Ossification and Related Conditions
2008 - Elsevier BV | Nefrología
Produção Nacional
Revisado por pares
Mateus Castilho Santos, Luiz Gustavo Nussio, Gérson Barreto Mourão, Patrick Schmidt, Lucas José Mari, José Leonardo Ribeiro,
... silagens: controle (sem aditivo), L. buchneri, óxido e carbonato de cálcio em doses de 1,0 e ... gasosas foram observadas nas silagens com óxido ou carbonato de cálcio, que resultaram em maior taxa de ... fermentação alcoólica. As silagens tratadas com óxido e carbonato apresentaram, no momento da abertura, maior teor de ... com a silagem sem aditivos. Silagens tratadas com carbonato e óxido de cálcio apresentam maior desempenho durante ...
Tópico(s): Food composition and properties
2008 - Sociedade Brasileira de Zootecnia | Revista Brasileira de Zootecnia