نتایج جستجو برای: de esterified tragacanth
تعداد نتایج: 1535122 فیلتر نتایج به سال:
The aim of this study was to investigate the effect of esterification via acetic or propionic anhydride on the surface roughness of eastern cottonwood. Eastern cottonwood (Populous deltoides) was esterified by using acetic or propionic anhydride without using any solvent or catalyst under different conditions. Two different weight percentage gains (WPGs) were obtained for each of the modifying ...
introduction : one of the most important problems of synthetic packaging of materials had been the time consuming process of their decomposition. therefore, they have the potential to contaminate the environment. during the recent years, the above-mentioned problem has paved the way for developing biodegradable biopolymers. one group of these polymers is films and edible coatings. soy protein i...
Concentrated binary mixtures of polymers in solution commonly exhibit immiscibility, resolving into two separate phases each of which is enriched in one polymer. The plant cell wall is a concentrated polymer assembly, and phase separation of the constituent polymers could make an important contribution to its structural organization and functional properties. However, to our knowledge, there ha...
conclusion tout lecteur de théâtre se doit d’être un metteur en scène en puissance. le texte dramatique est en effet ouvert aux possibles de l’imaginaire ; en l’absence de scène, le lecteur s’invente un parti pris, visualise les personnages en action et donne à l’espace les couleurs, les dimensions et les formes qui correspondent aux caprices de son imagination. or dans ruyblas, hugo démultipl...
The present study deals with the isolation of fourteen compounds from the active ethyl acetate (MPE) extract of M. pudica (L.) whole plant and their subsequent evaluation for the nitric oxide (NO), tumor necrosis factor alpha (TNF-α) and interleukin 1 beta (IL-1ß) inhibitory activities in lipopolysaccharide (LPS) stimulated RAW 264.7 and J774A.1 cells. Among the tested compounds, L-mimosine (12...
la notion d’équivalence est un concept clé de la pratique et de la théorie de la traduction. cependant, l’équivalence reste toujours une notion confuse. en effet, peu de chercheurs en théorie de la traduction continuent de nos jours à rechercher les principes de l’équivalence au niveau des signes de deux langues comme le faisait déjà sain augustin au quatrième siècle et comme le faisait encore,...
esprit nouveau reflet d’une nouvelle culture. l’esprit nouveau ne sera pas renoncement au lyrisme, au contraire il veut être un lyrisme « accordé » (au sens musical de ce terme), aux images, aux rythmes, aux sons et aux bruits du monde moderne. c’est le lieu de rencontre et d’échange entre l’âme et le monde extérieur .ce n’est plus principalement la nature extérieure, mais le monde des villes...
Many animal species show ornaments with yellow-orange-red colors produced by carotenoid pigments. Such traits have evolved as reliable signals of individual quality because of the costs inherent to their production or maintenance. In animal tissues, carotenoids are often found combined with free fatty acids, as carotenoid esters, which may confer more stability to coloration than free carotenoi...
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