Artículos de revistas: Recent submissions
Now showing items 701-720 of 4968
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(1986)The light-activated conductance of Limulus ventral photoreceptors was studied using the patch-clamp technique. Channels (40 pS) were observed whose probability of opening was greatly increased by light. In some cells the ...
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(1981)The Falicov‐Ramirez‐Kimball model is solved by means of the two‐atom cluster Caron‐Pratt approximation. Metallic and insulating phases according to the value of an order parameter Δ are obtained, and both second‐ and ...
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(1987)The ground state potential energy curves of alkaline-earth monohydride ions have been investigated. A pseudopotential formalism including a corepolarization potential has been used. For the valence correlation energy a ...
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(Oxford University Press, 1981)Liolaemus monticola, Müller and Hellmich, is a highly variable, endemic montane species distributed along the temperate Andes in Chile. The subspecies (Müller and Hellmich) karyotypes established from their type localities ...
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(1975)When hemocyanin is added to a black lipid film, the conductance increases in discrete steps. For negative potentials the single step conductance is constant, but for positive potentials the step conductance appears to ...
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(Cell Press, 2001)Calcium signals participate in the differentiation of electrically excitable and nonexcitable cells; one example of this differentiation is the acquisition of mature neuronal phenotypes [1]. For example, transient elevations ...
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(Academic Press, 1993)Cobalt and iron can be determined simultaneously by first derivative spectrophotometry. The method does not require simultaneous equations to be resolved and it is based on the separation of the analytes, by liquid-liquid ...
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(1992)In this work the inverse problem of the variational calculus for systems of differential equations of any order is analyzed. It is shown that, if a Lagrangian exists for a given regular system of differential equations, ...
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(1991)A systematic investigation of the international rotation of glyoxal (OHC-CHO), fluoroglyoxal (OHC - CFO), chloroglyoxal (OHC-CClO), oxalylfluoride (OFC-CFO) and oxalyl chloride (OClC-CClO) is presented. A new partition for ...
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(1996)The binding energies of Li (1s) electron in a series of lithium salts, the metal, and lithium intercalated in molybdenum sulfide measured with respect to Au (4f7/2) agree with both the expected ionic character and oxidation ...
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(1989)Seedlings of four wheat cultivars were infested with Metopolophium dirhodum nymphs. After aphids had fed for 40 hr on the plants, the levels of the defense metabolite 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one had changed. ...
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(1986)Viscosities of micelles of cetyltrimethylammonium salts (CTAX, X = tosylate (TOS-), Cl-, Br-, NO3 -) in the presence of Cl-, Br-, NO3 -, benzene sulfonate (BS-), and TOS-, of cetylpyridinium chloride (CpyC) in the presence ...
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(1981)The content of hydroxamic acids in wheat plants shows substantial variations between different species and cultivars (1.0-6.3 mmol/kg fr. wt). It also varies with the age of the plant and the organ assayed. The maximum ...
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(2000)Metallocene catalysts, viz., rac-Et(Ind)2ZrCl2, rac-Me2-Si(Ind)2ZrCl2 and Ph2C(Flu)(Cp)ZrCl2, were studied in homopolymerization of 1-octadecene and the first two were used in copolymerization of ethylene with 1-octadecene. ...
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(Blackwell Munksgaard, 1998)© 1998 International Union of Crystallography The structures of [Cu(C12H8N2)2(S4O 6)], (I), and [Cu(C12H8N2)3](S4O 6).5H2O, (II), are reported. Compound (I) consists of infinite polymeric chains where copper displays a ...
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(1981)Hydrolysis of geranyl pyrophosphate is catalyzed by salts of Mn2+ and involves C-O bond cleavage. The first order rate constants reach limiting values with [Mn2+] > 10-2 M, and the most reactive species is GPP(Mn2+)2 ...
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(1995)We perform a theoretical study of the response of neutral and ionized metal clusters to the elastic impact of slow electrons. We center our attention on Na40 and Na41+ closed-shell clusters. A phase-shift analysis is ...
