نتایج جستجو برای: anion interchanges

تعداد نتایج: 34231  

Journal: :international journal of environmental research 2012
h. katsura

it is very important to determine the stable nitrogen isotope ratio for the nitrogenous substances in aerosols and the geochemistry behavior of stable nitrate ion isotopes in aerosols in order to elucidate the chemical and physical functions of clouds. hence, aerosol field sampling was conducted in the skies offshore from malibu beach and santa barbara, california, u.s.a. on 16 and 18 july 200...

Journal: :Science 1962
C GARCIA-BENITEZ S WOLFF

Although radiation-induced chromosome exchanges are not distributed among cells according to a Poisson distribution, chromatid interchanges are. In Vicia faba the lack of fit to a Poisson distribution has been attributed to the occurrence of only two sites per cell where the chromosomes are close enough to form exchanges if broken. When chromatid aberrations are induced, after chromosomal dupli...

Journal: :Mathematical medicine and biology : a journal of the IMA 2005
Yongwimon Lenbury Pornsarp Pornsawad

The present work develops and analyses a model system of delay-differential equations which describes the core dynamics of the stress-responsive hypothalamus-pituitary-adrenal axis. This neuroendocrine ensemble exhibits prominent pulsatile secretory patterns governed by nonlinear and time-delayed feedforward and feedback signal interchanges. Formulation and subsequent bifurcation analysis of th...

Journal: :Discussiones Mathematicae Graph Theory 2006
Richard Hammack

A standard result states the direct product of two connected bipartite graphs has exactly two components. Jha, Klavžar and Zmazek proved that if one of the factors admits an automorphism that interchanges partite sets, then the components are isomorphic. They conjectured the converse to be true. We prove the converse holds if the factors are square-free. Further, we present a matrix-theoretic c...

2007
Károly J. Böröczky Rolf Schneider

We characterize the duality of convex bodies in d-dimensional Euclidean vector space, viewed as a mapping from the space of convex bodies containing the origin in the interior into the same space. The question for such a characterization was posed by Vitali Milman. Sufficient for a characterization, up to a trivial exception and the composition with a linear transformation, is the property that...

Journal: :Topics in cognitive science 2012
John B. Gatewood

The introductory essay to this collection correctly observes that there are many "challenges for rapprochement" between anthropology and (the rest of) cognitive science. Still, the possibilities of fruitful interchanges provide some hope for the parties getting back together, at least on an intermittent basis. This response offers some views concerning the "incompatibility" of psychology and an...

Journal: :Biochemical and biophysical research communications 1988
K H Weisgraber Y M Newhouse R W Mahley

A rapid procedure for determining apolipoprotein E genotype from genomic DNA has been developed. In this procedure, DNA is amplified by the polymerase chain reaction, and allele-specific oligonucleotide probes are used to detect the cysteine-arginine interchanges at residues 112 and 158 that distinguish the three common isoforms of apolipoprotein E. The method was tested with 68 subjects, repre...

2008
Anvesh Komuravelli Arnab Sinha Arijit Bishnu

A three dimensional digital binary image is B26 connected if its set of black voxels is 26-connected, i.e. for all black voxels there exists at least one black voxel among its 26 neighbors. We show that any two such images I and J of c1 and c2 number of connected components respectively and n voxels each, can be transformed into one another maintaining the B26 connectivity of the black voxels b...

2005
K. Landsteiner

We give dual interpretations of Seiberg–Witten and Dijkgraaf–Vafa (or matrix model) curves in N = 1 supersymmetric U(N) gauge theory. This duality interchanges the rank of the gauge group with the degree of the superpotential; moreover, the constraint of having at most log-normalizable deformations of the geometry is mapped to a constraint in the number of flavors Nf < N in the dual theory. Kar...

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