In axiomatizing their study of Frobenius distributions [5], Lang and Trotter introduce the notion of an adelic Galois representation of elliptic type, and they ask in passing whether every such representation arises from an elliptic curve (see pp. 5 and 19 of [5]). Formulated in the language of `-adic representations [7], their question is as follows. Put G = Gal(Q/Q), let p denote a prime, and...

Objective(s): Binary hybrids of chitosan-zeolite have many interesting applications in separation and bacteriostatic activity. Materials and Methods: Template free ZSM-5 zeolite was synthesized by hydrothermal method, physical hydrogels of nano chitosan in the colloidal domain were obtained in the absence of toxic organic solvent and then nano chitosan/ZSM-5 hybrid composites with nano chitosan...

Abstract Background Strawberry fruit is a rich source of antioxidants that are beneficial for human health. However, the rapid decline strawberries dramatically reduces shelf life and raises postharvest losses. To develop an efficient ecological approach maintaining quality, ( Fragaria x ananassa , cv. Festival) were treated with 0.5% chitosan coating (0.5% Ch), guava leaf-based nanoparticles (...

If we take a look on Scopus website from the last 5 years, we could see that chitosan and its chemical/enzymatic derivatives are ranked in one of the first bio-polysaccharide described for pharmaceutical applications. As for example, in 2012 using “chitosan” and a combination of “chitosan and pharmaceutical” we found, respectively, 4027 and 1588 publications whereas for 2016 we found respective...

bioedegradable nanoparticles are intensively investigated for their potential applications in drug delivery systems. being a biocompatible and biodegradable polymer, chitosan holds great promise for use in this area. this investigation was concerned with determination and optimization of the effective parameters involved in the production of chitosan nanoparticles using ionic gelation method. s...

s of all articles located by the search were reviewed. Full-text versions of potentially relevant studies were obtained. Inclusion criteria: 1. Pulmonary TB in children <15 years 2. Original research (not reviews) 3. Evaluated gastric aspiration (GA) or gastric lavage (GL) 4. Compared GA/GL to clinical criteria or to another diagnostic method 5. English language version

Chitosan is a linear cationic biopolymer composed of glucosamine and N-acetyl-glucosamine that is only soluble in acidic aqueous solutions and precipitates when neutralized. However, it was recently discovered that chitosan dissolved in solutions containing glycerol phosphate was soluble at near neutral pH and produced a sol-gel transition when heated. Understanding this unique thermogelling sy...

We investigated the inhibition of Clostridium perfringens spore germination and outgrowth by the biopolymer chitosan during abusive chilling of cooked ground beef (25% fat) and turkey (7% fat) obtained from a retail store. Chitosan was mixed into the thawed beef or turkey at concentrations of 0.5%, 1.0%, 2.0%, or 3.0% (w/w) along with a heat-activated 3-strain spore cocktail to obtain a final s...

Chitosan was prepared from crab shell. Different derivatives of chitosan e.g. phosphate, cyanoethyl and carboxymethyl chitosan are prepared. Molecular structure of chitosan and its derivatives was fallowed by infrared spectroscopy. A new band at 1715cm -1 (carboxyl group), at 2253cm -1 (cyano group) and at 1200cm -1 for (c-o-p) in spectra of carboxymethyl chitosan, cyanoethyl chitosan and chito...