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Spectrophotometric Characterization of the Complex Generated in Solution for the Reaction of H[Ru(III)Cl2(H2EDTA)] Complex with AETS Modifier Agent  [PDF]
Angélica M. Lazarin, Rosana Lázara Sernaglia
Open Journal of Synthesis Theory and Applications (OJSTA) , 2014, DOI: 10.4236/ojsta.2014.34006
Abstract: Spectrophotometric method was used to evaluate the kinetic of the complex formation from the reaction between H[Ru(III)Cl2(H2EDTA)] and the modifier agent [3-(2-aminoethyl)aminopropyl] trimethoxysilane (AEATS) (μ = 0.50 mol.dm-3 with NaCF3COO, 298.15 K), in pseudo-first order conditions. These studies showed that the reactions are successives producing several species influenced by the concentrations ratio. The electronics spectrum of all solutions showed a band in 457 nm with variable molar absorptivity (ε).
Oxidative dimerization of Ru(III)-EDTA complex on the surface of functionalized silica gel
Codognoto, Lúcia;Zanichelli, Patrícia Gra?a;Sernaglia, Rosana Lázara;
Journal of the Brazilian Chemical Society , 2005, DOI: 10.1590/S0103-50532005000400020
Abstract: the present paper deals with the reaction of oxidative dimerization of the h[ru(iii)cl2(h2edta)].4.5 h2o complex on the surface of silica gel functionalized (sf) with [3-(2-aminoethyl)aminopropyl]trimethoxysilane (aeats), generating the dimeric (edta)2ru2(iv,iv) complex immobilized on the surface of this silica through the coordination with amide bonds. the oxidation of water by the anchored dimeric complex proceeded rapidly and was observed by the evolution of o2 and the decrease in ph, yielding the sf-aeats/(edta)2ru2(iii1/2 ,iii1/2). this anchored dimer was characterized by electronic, vibrational and epr spectroscopies. the electrochemical behavior of a modified carbon paste electrode prepared with sf-aeats/(edta)2ru2(iii1/2 ,iii1/2) was also studied.
Adsor??o do complexo H[Ru(III)Cl2(H2EDTA)] sobre a superfície da sílica gel modificada com [3-(2-aminoetil) aminopropil]trimetoxissilano em solu??es etanólicas
Lazarin, Angélica Machi;Sernaglia, Rosana Lázara;
Química Nova , 1999, DOI: 10.1590/S0100-40421999000300011
Abstract: silica gel was functionalized with [3-(2-aminoethyl)aminopropyl]trimethoxysilane group (sf-aeats) and the characterization by chemical analysis (n) and infrared spectroscopy confirmed the functionalization. the capacity of the modified silica to adsorb the complex ru(iii)-edta from ethanolic solution was studied. the selectivity coefficients of the complex formed on the support obtained was (g?), 2,07 x 104 l/mol and the average number of ligand bonded by one metal ion on the support (?) was ~ 1.
Adsor o do complexo H[Ru(III)Cl2(H2EDTA)] sobre a superfície da sílica gel modificada com [3-(2-aminoetil) aminopropil]trimetoxissilano em solu es etanólicas  [cached]
Lazarin Angélica Machi,Sernaglia Rosana Lázara
Química Nova , 1999,
Abstract: Silica gel was functionalized with [3-(2-aminoethyl)aminopropyl]trimethoxysilane group (SF-AEATS) and the characterization by chemical analysis (N) and infrared spectroscopy confirmed the functionalization. The capacity of the modified silica to adsorb the complex Ru(III)-EDTA from ethanolic solution was studied. The selectivity coefficients of the complex formed on the support obtained was (G ), 2,07 x 10(4) L/mol and the average number of ligand bonded by one metal ion on the support ( ) was ~ 1.
Genetic Modifier Screens Reveal New Components that Interact with the Drosophila Dystroglycan-Dystrophin Complex  [PDF]
Mariya M. Kucherenko, Mario Pantoja, Andriy S. Yatsenko, Halyna R. Shcherbata, Karin A. Fischer, Dariya V. Maksymiv, Yaroslava I. Chernyk, Hannele Ruohola-Baker
PLOS ONE , 2008, DOI: 10.1371/journal.pone.0002418
Abstract: The Dystroglycan-Dystrophin (Dg-Dys) complex has a capacity to transmit information from the extracellular matrix to the cytoskeleton inside the cell. It is proposed that this interaction is under tight regulation; however the signaling/regulatory components of Dg-Dys complex remain elusive. Understanding the regulation of the complex is critical since defects in this complex cause muscular dystrophy in humans. To reveal new regulators of the Dg-Dys complex, we used a model organism Drosophila melanogaster and performed genetic interaction screens to identify modifiers of Dg and Dys mutants in Drosophila wing veins. These mutant screens revealed that the Dg-Dys complex interacts with genes involved in muscle function and components of Notch, TGF-β and EGFR signaling pathways. In addition, components of pathways that are required for cellular and/or axonal migration through cytoskeletal regulation, such as Semaphorin-Plexin, Frazzled-Netrin and Slit-Robo pathways show interactions with Dys and/or Dg. These data suggest that the Dg-Dys complex and the other pathways regulating extracellular information transfer to the cytoskeletal dynamics are more intercalated than previously thought.
On the modifier razgovetno
Ivi? Milka
Ju?noslovenski Filolog , 2004, DOI: 10.2298/jfi0460001i
Abstract: A problem not previously considered is whether the actual Standard Serbian vocabulary of manner adverbs coincides with the one attested in Vuk Karadzic' times. Pointing to some relevant facts concerning the co-occurrence of the speech act verbs with the manner modifier razgovetno, this paper not only delineates the differences in the expression of such a manner modification between the earlier stages of Standard Serbian and the contemporary language but also provides a novel argument for the validity of the author's claim (published in one of her previous articles) that it is theoretically as well as pragmatically important to distinguish between the partial and the total types of predicate modifiers.
Genetic interactions and modifier genes in Hirschsprung's disease  [cached]
Adam S Wallace,Richard B Anderson
World Journal of Gastroenterology , 2011, DOI: 10.3748/wjg.v17.i45.4937
Abstract: Hirschsprung’s disease is a congenital disorder that occurs in 1:5000 live births. It is characterised by an absence of enteric neurons along a variable region of the gastrointestinal tract. Hirschsprung’s disease is classified as a multigenic disorder, because the same phenotype is associated with mutations in multiple distinct genes. Furthermore, the genetics of Hirschsprung’s disease are highly complex and not strictly Mendelian. The phenotypic variability and incomplete penetrance observed in Hirschsprung’s disease also suggests the involvement of modifier genes. Here, we summarise the current knowledge of the genetics underlying Hirschsprung’s disease based on human and animal studies, focusing on the principal causative genes, their interactions, and the role of modifier genes.
HOCl and Cl2 observations in marine air
M. J. Lawler, R. Sander, L. J. Carpenter, J. D. Lee, R. von Glasow, R. Sommariva,E. S. Saltzman
Atmospheric Chemistry and Physics (ACP) & Discussions (ACPD) , 2011,
Abstract: Cl atoms in the marine atmosphere may significantly impact the lifetimes of methane and other hydrocarbons. However, the existing estimates of Cl atom levels in marine air are based on indirect evidence. Here we present measurements of the Cl precursors HOCl and Cl2 in the marine boundary layer during June of 2009 at the Cape Verde Atmospheric Observatory in the eastern tropical Atlantic. These are the first measurements of tropospheric HOCl. HOCl and Cl2 levels were low in air with open ocean back trajectories, with maximum levels always below 60 and 10 ppt (pmol/mol), respectively. In air with trajectories originating over Europe, HOCl and Cl2 levels were higher, with HOCl maxima exceeding 100 ppt each day and Cl2 reaching up to 35 ppt. The increased Cl cycling associated with long distance pollutant transport over the oceans likely impacts a wide geographic area and represents a mechanism by which human activities have increased the reactivity of the marine atmosphere. Data-constrained model simulations indicate that Cl atoms account for approximately 15 % of methane destruction on days when aged polluted air arrives at the site. A photochemical model does not adequately simulate the observed abundances of HOCl and Cl2, raising the possibility of an unknown HOCl source.
Mathematical Modeling of the Synchronous Phase Modifier  [PDF]
Saleh A. Al-Jufout
Journal of Applied Sciences , 2003,
Abstract: The mathematical model of the three-phase, synchronous phase modifier has been developed. This model has been represented as a system of six (salient-pole machine) and eight (nonsalient-pole machine) differential equations for flux-linkages and angular velocity determination. The differential equation for the flux-linkages of the stator, amortisseur and excitation windings have been expressed in synchronously rotational rectangular direct and quadrature coordinates. Both the rotational and transformation electromotive forces have been taken into consideration in the stator differential equations. The additional resistance for excitation current winding. The currents in both axes have been presented in matrix form. The curves of the synchronous phase modifier angular velocity; field and stator currents during induction starting have been calculated and illustrated.
A study of [Au(ethylenediamine)Cl2]Cl interaction with L-methionine and DL-seleno-methionine by 1H and 13C NMR spectroscopy  [PDF]
Bassem A. Al-Maythalony,Mohamed I. M. Wazeer,Anvarhusein A. Isab,Saeed Ahmad
Spectroscopy: An International Journal , 2010, DOI: 10.3233/spe-2010-0478
Abstract: The interaction of [Au(en)Cl2]Cl with L-methionine (Met) and DL-seleno-methionine (Se-Met) was carried out in D2O solution at ∼pH 3.8. 13C NMR spectra were interpreted by comparison with the spectra recorded after the reaction of Met or Se-Met with HAuCl4 and also after oxidation by H2O2. Reactions of [Au(en)Cl2]Cl with Met and Se-Met were found to proceed through the exchange of chloride ligands from complex with Met or Se-Met. Gold(III) reduction takes place during the reaction and en ligand was released from [Au(en)Cl2]Cl complex.
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