The Kμ-Transformation on McBride's Spaces of Generalized Functions

In this paper we define the K_μ- transformation on certain spaces of generalized functions introduced by A.C. McBride by employing the kernel method. we also establish relations between the generalized K_μ- transformation and certain fractional integral operators.     

Synthesis of poly(ester amide)s with lateral groups from a bulk polycondensation reaction with formation of sodium chloride salts

Poly(ester amide)s with a regular sequence and derived from diamine, dicarboxylic acid, and glycolic acid units can be easily synthesized by using a thermal polycondensation method based on the formation of metal halide salts as a driving force. These new poly(ester amide)s have tuneable properties depending on the number of methylene groups and constitute a group of materials with potential interest as biodegradable materials in applications such as surgical sutures. The present work reveals that the proposed synthesis can also be applied when esters of L ‐lysine are used as a diamine unit since no secondary reactions such as transesterification occur under the required polymerization conditions. The possibility of linking compounds with pharmacological activity to the carboxylic acid groups of lysine extends the interest of the referred materials, for example, as drug delivery systems. © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 661–667, 2008     

DETERMINATION OF EFFICIENT RANGE OF TARGET LEVELS IN MULTIPLE OBJECTIVE PLANNING

This paper describes a nonlinear programming model combined with a binary search technique that systematically searches for the minimum value of a given objective within the nondominated solution set. The procedure provides a way of determining the range of efficient target levels for any multiobjective planning problem using information contained in the pay-off table. The method is illustrated using a numerical example.     

Elude de la réaction du β-aminocrotonitrile et du α-formyl phénylacétonitrile avec l'hydrazine: Synthèse d'amino-7 pyrazolo[1,5-a]pyrimidines

The three compounds C₈ H₁₀N₄ which arise from reaction of hydrazine and β-aminocrotonitrile have been identified: the formation of anazine, a 3(5)-amino 5(3)-methyl pyrazole derivative and a 7-amino pyrazolo [1,5-a] pyrimidine has been demonstrated. The relationships among these compounds and with the methyl-aminopyrazole have been studied.     

Study of the nitric oxide system in the rat cerebellum during aging

Background  

The cerebellum is the neural structure with the highest levels of nitric oxide, a neurotransmitter that has been proposed to play a key role in the brain aging, although knowledge concerning its contribution to cerebellar senescence is still unclear, due mainly to absence of integrative studies that jointly evaluate the main factors involved in its cell production and function. Consequently, in the present study, we investigate the expression, location, and activity of nitric oxide synthase isoenzymes; the protein nitration; and the production of nitric oxide in the cerebellum of adult and old rats.