نتایج جستجو برای: smart hydrogel

تعداد نتایج: 87383  

Journal: :Advanced materials 2018
Gregor Fuhrmann Rona Chandrawati Paresh A Parmar Timothy J Keane Stephanie A Maynard Sergio Bertazzo Molly M Stevens

Extracellular vesicles (EVs) have recently gained significant attention as important mediators of intercellular communication, potential drug carriers, and disease biomarkers. These natural cell-derived nanoparticles are postulated to be biocompatible, stable under physiological conditions, and to show reduced immunogenicity as compared to other synthetic nanoparticles. Although initial clinica...

Journal: :journal of oil, gas and petrochemical technology 2015
samira rajaee mohsen vafaie sefti asefe mousavi moghadam mahsa baghban salehi hasan naderi

a key parameter for the application of polymer gels in water shut off treatment is the adsorption of polymer gel onto the rock surface. so, the adsorption properties of a nanocomposite hydrogel were discussed in this research by crosslinking of sulfonated polyacrylamide/sodium montmorillonite aqueous solutions with chromium triacetate. the x-ray diffraction patterns indicated that exfoliated ty...

Journal: :iranian journal of veterinary medicine 0
katayoun kiani phd student, department of pharmacology, faculty of veterinary medicine, university of tehran, tehran, iran. ali rassouli department of pharmacology, faculty of veterinary medicine, university of tehran, tehran, iran yalda hosseinzadeh ardakani department of pharmaceutics, faculty of pharmacy, tehran university of medical sciences, tehran, iran hamid akbari javar department of pharmaceutics, faculty of pharmacy, tehran university of medical sciences, tehran, iran sakineh khanamani falahatipour department of pharmacology, faculty of veterinary medicine, university of tehran, tehran, iran pegah khosraviyan department of pharmaceutics, faculty of pharmacy, tehran university of medical sciences, tehran, iran taghi zahraee salehi

background: sustained release delivery system can reduce the dosage frequency and maintain the therapeutic level of drugs for a longer time. biodegradable, biocompatible and thermosensitive chitosan-beta-glycerophosphate (c-gp) solutions can solidify at body temperature and maintain their physical integrity for a longer duration. objectives: to develop a novel delivery system based on the integ...

Journal: :Materials & Design 2021

Targeted drug delivery is currently emerging as a promising approach to overcome the limits of employed administration techniques. The most convenient methodology control application stimuli-responsive materials, which can release drugs only when required, remotely controlled microdevices able navigate human body. Thanks this synergy, be both spatially and temporally. Spatial guaranteed by mane...

A key parameter for the application of polymer gels in water shut off treatment is the adsorption of polymer gel onto the rock surface. So, the adsorption properties of a nanocomposite hydrogel were discussed in this research by crosslinking of sulfonated polyacrylamide/sodium montmorillonite aqueous solutions with chromium triacetate. The X-ray diffraction patterns indicated that exfoliated ty...

Introduction: Mathematical modeling of drug release is one of the ways to improve the rate of drug diffusion and infiltration in swollen hydrogel based systems. Using this method can provide a better understanding of the mechanisms of drug control and its release. Hydrogels are a swollen biomaterial that needs to be controlled for use in drug release. Purpose and methodology: In this study, fiv...

Journal: :Physical chemistry chemical physics : PCCP 2013
Jingjing Yuan Junwu Zhu Huiping Bi Xiaoqian Meng Shiming Liang Lili Zhang Xin Wang

Three-dimensional (3D) graphene-based composite materials have attracted increasing attention, owing to their specific surface area, high conductivity and electronic interactions. Here, we report a convenient route to fabricate a 3D Co3O4/Graphene Hydrogel (CGH) composite as an electrode material for supercapacitors. Utilizing the gelation of a graphene oxide dispersion enables the anchoring of...

Ghazal Beheshti Rouzbahani Gholam Bagheri Marandi Mehran Kurdtabar

In this work, a series of hydrogel nanocomposites were prepared by grafting acrylic acid and acrylamide on gelatin in the presence of Na-montmorillonite (Na-MMT) nanoparticles. The characterizations of hydrogel nanocomposites were examined by swelling experiments, Fourier transform infrared (FT-IR) spectroscopy, X-Ray diffraction (XRD) patterns and thermogravimetric analysis (TGA). Scanning ele...

Journal: :Journal of controlled release : official journal of the Controlled Release Society 2015
Yumiko Ishii-Mizuno Yuka Umeki Yuki Takahashi Yukinori Kato Tetsuji Takabayashi Shigeharu Fujieda Yoshinobu Takakura Makiya Nishikawa

To develop an immunotherapeutic vaccine for treatment of allergic rhinitis, we developed a controlled release formulation of Cryj1, a major Japanese cedar pollen allergen, with immunostimulatory potency. Two sets of hexapod-like structured DNA (hexapodna) were prepared using six oligodeoxynucleotides (ODNs) each, including ODNs with an unmethylated cytosine-phosphate-guanine (CpG) sequence (CpG...

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