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1.
Ibra Gueye Dioum Jacques Vedel Bernard Tremillon 《Journal of Electroanalytical Chemistry》1982,137(2):219-226
Molten potassium tetrachlorogallate and potassium tetraiodogallate were studied in terms of halogenoacidity, based on X? ion-exchange. Titration of KX solution with GaX3 were achieved and characterized by the shift of cathodic voltammetric curves. Autodissociation constants Ki,X/mol2 kg?1 were determined: ?log Ki,Cl=4.25±0.05 and ?log Ki,I=2.6±0.05, as well as the solubility values of KX: 0.41±0.02 and 0.80±0.02 mol kg?1 for KCl and KI respectively. 相似文献
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PL. Muthuramalingam 《Letters in Mathematical Physics》1982,6(4):303-307
Let
be the selfadjoint operator for the static electromagnetic field where W
j for 0, 1, 2, ..., n is a sum of (i) a short-range potential and (ii) a smooth long-range potential decreasing at as |x|- with in (0, 1]. Then for >1/2, asymptotic completeness holds for the scattering system (H, H
0). 相似文献
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In order to solve a quadratic 0/1 problem, some techniques, consisting in deriving a linear integer formulation, are used.
Those techniques, called “linearization”, usually involve a huge number of additional variables. As a consequence, the exact
resolution of the linear model is, in general, very difficult.
Our aim, in this paper, is to propose “economical” linear models. Starting from an existing linearization (typically the so-called
“classical linearization”), we find a new linearization with fewer variables. The resulting model is called “Miniaturized”
linearization. Based on this approach, we propose a new linearization scheme for which numerical tests have been performed. 相似文献
7.
Regis F. Babindamana Cheikh Thiecoumba Gueye 《Journal of Mathematical Modelling and Algorithms》2011,10(3):277-291
We present a new approach of the decoding algorithm for Gabidulin Codes. In the same way as efficient erasure decoding for
Generalized Reed Solomon codes by using the structure of the inverse of the VanderMonde matrices, we show that, the erasure(t
erasures mean that t components of a code vector are erased) decoding Gabidulin code can be seen as a computation of three
matrice and an affine permutation, instead of computing an inverse from the generator or parity check matrix. This significantly
reduces the decoding complexity compared to others algorithms. For t erasures with t ≤ r, where r = n − k, the erasure algorithm decoding for Gab
n, k
(g) Gabidulin code compute the t symbols by simple multiplication of three matrices. That requires rt + r(k − 1) Galois field multiplications, t(r − 1) + (t + r)k field additions, r
2 + r(k + 1) field negations and t(k + 1) field inversions. 相似文献
8.
Nano titanium dioxide (nTiO2), generally considered to be toxicologically inert, is manufactured in large quantities and extensively applied in consumer products. The small size and large surface area endow them with an active group or intrinsic toxicity. Advances in instrumentation are making Raman spectroscopy the tool of choice for an increasing number of (bio) chemical applications. One of the great advantages of this technique is its ability to provide information on the concentration, structure and interaction of biochemical molecules in their microenvironments within intact cells and tissues, non-destructively. Zebrafish (Danio rerio), one of the most important vertebrate model organisms used in developmental biology, are increasingly used in biomedical research, particularly as a model of human disease. In the present work, an attempt is made to study the effect of titanium dioxide, both nano and bulk, on the microenvironment of the liver tissues of Zebrafish using FT-Raman spectroscopy. The results of the present study suggest that TiO2 exposure demonstrate a marked influence on the microenvironments of the liver tissues of Zebrafish. A shift to a higher wavenumber and an increase in the intensity of the band at ∼1087 cm−1 in the TiO2 exposed tissues suggest that some of the conformational changes resulting from the alkali recovery process takes place due to TiO2 exposure. The decreased intensity ratio (I3220/I3400) observed in the titanium-exposed tissues suggests a decreased water domain size, which could be interpreted in terms of weaker hydrogen-bonded molecular species of water in the TiO2 exposed tissues. The observed shift of COO− bands to higher frequencies shows the disruption of salt bridges as a result of a change in the oppositely charged partners and due to the enhanced random coil conformation. The variation in the intensity ratio of the tyrosyl doublet (I858/I825) indicates variation in the hydrogen bonding of the phenolic hydroxyl group due to TiO2 exposure. The results further suggest that the microenvironments are greatly altered due to titanium nano exposure when compared to titanium bulk. In conclusion, the results indicate that FT-Raman spectroscopy might be a useful tool for rapid assessment of nano particle biological interactions. 相似文献
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Aequationes mathematicae - 相似文献
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