نتایج جستجو برای: chitosan derivatives

تعداد نتایج: 121616  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه محقق اردبیلی - دانشکده علوم 1392

مهندسی بافت ترکیبی از سلول و داربست سه بعدی جهت ترمیم بافت آسیب دیده یا از بین رفته ی ماهیچه است. در این راستا, نانو داربست های کامپوزیت نانولوله های کربنی و کایتوزان و هیدرکسی آپاتیت، نانولوله های کربنی و کایتوزان و داربست کایتوزان با روش freeze dryingتهیه شد. داربست های تهیه شده، از لحاظ خصوصیات سطحی، درصد تخلخل، اندازه ی منافذ، نحوه ی توزیع منافذ، رفتار تخریب پذیریو ترکیب تشکیل دهنده ی داربس...

Journal: :Journal of the Chilean Chemical Society 2003

Journal: :Journal of Pharmaceutical Negative Results 2022

This study's main goals are to give an overview of chitosan-based nanoparticles used in a variety non-parenteral applications and call attention new research on mucoadhesive sustained release chitosan dosage forms. Chitosan is biodegradable, biocompatible polymer that has been certified for use wound dressings suitable inclusion human diets. For drug delivery methods, employed as carrier polyme...

A. Rashti H. Montazeri M. Mehrabi N. Mohamadpour Dounighi, R. Vakili-Ghartavol

Most infectious diseases are caused by pathogenic infiltrations from the mucosal tract. Nowadays, the use of vaccines has been widely investigated for the prevention of different infectious diseases, infertility, immune disorders, malignancies, and allergies. Broad-spectrum adjuvant substances have been studied for immune system stimulation with a greater efficiency against specific antigens. V...

heidari, Ali, hosseini, motahare, kargar-ghalesefi , Samane, karimi, elham, Krimimoghadam, Zeinab, sadri, minoo,

Background & Objective: The nanofibers are referred to as fibers with a diameter of less than 1000 nm. There are various ways to make nanofibers, one of which is electrospinning. In this method, nanofibers are formed on aluminum sheets. The conversion of chitosan to derivatives with greater solubility, its mixing with other polymers and the use of special solvents are methods for its ease of us...

2005
W. S. Adriano E. H.C. Filho J. A. Silva R. L. C. Giordano

The objective of this work was to study enzyme immobilization on chitosan activated with glutaraldehyde, aiming to produce a cheap biocatalyst. Two different immobilization strategies were studied: one-point and multipoint covalent attachment to the solid matrix. The multipoint covalent attachment derivative had an 82% immobilization yield. It was 4.9-fold more stable than the free enzyme at 50...

2018
Ja Young Cheon Hun Min Lee Won Ho Park

In this study, silver chloride nanoparticles (AgCl NPs) were prepared using chitosan oligomer (CHI) and chitosan oligomer derivatives (CHI-FITC). The CHI and CHI-FITC were used as markers to confirm the formation of AgCl NPs using their fluorescence properties as well as stabilizers. The fluorescence properties of CHI and CHI-FITC were monitored by a luminescence spectrophotometer, and the morp...

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