نتایج جستجو برای: hydrogel beads

تعداد نتایج: 25204  

Journal: :Chemical communications 2012
Yeon Jeong Oh Il Hwan Cho Haeshin Lee Ki-Jung Park Hyukjin Lee Sung Young Park

A new way is demonstrated to develop a bio-inspired coacervate hydrogel by following catechol chemistry showing injectable and re-moldable physical properties. The formed coacervate shows potential long-term stability under water. Depending on pH, formation of the coacervate has been verified which is confirmed by XPS and zeta potential measurements.

Journal: :jundishapur journal of microbiology 0
hamid babavalian applied biotechnology research center, baqiyatallah university of medical sciences, tehran, ir iran ali mohammad latifi applied biotechnology research center, baqiyatallah university of medical sciences, tehran, ir iran; applied biotechnology research center, baqiyatallah university of medical sciences, tehran, ir iran. tel/fax: +98-2188617712, e-mail:; mohammad ali shokrgozar, national cell bank of iran, pasteur institute of iran, tehran, ir iran. tel: 98-2166492595 mohammad ali shokrgozar national cell bank of iran, pasteur institute of iran, tehran, ir iran; applied biotechnology research center, baqiyatallah university of medical sciences, tehran, ir iran. tel/fax: +98-2188617712, e-mail:; mohammad ali shokrgozar, national cell bank of iran, pasteur institute of iran, tehran, ir iran. tel: 98-2166492595 shahin bonakdar national cell bank of iran, pasteur institute of iran, tehran, ir iran sajjad mohammadi national cell bank of iran, pasteur institute of iran, tehran, ir iran mehrdad moosazadeh moghaddam applied biotechnology research center, baqiyatallah university of medical sciences, tehran, ir iran

conclusions this study showed that compared to standard drug treatment, treatment with hydrogel containing peptide had substantial antibacterial effects on s. aureus wound infections in mice. results the highest and lowest numbers of wounds were observed on day 2 in the negative and positive control groups, respectively. during the 8-day period, the positive control and hydrogel containing pept...

Journal: :environmental studies of persian gulf 2014
mohammad reza ramezani hossein naderi-manesh hossain ali rafiee pour

cell-based biosensors have become a research hotspot in biosensors and bioelectronics fields. the main feature of cell-based biosensors is the immobilization of living cell on the surface of transducers. different types of polymers which are used as scaffolds for cell growth should be biocompatible and have reactive functional groups for further attachment of biomolecules. in this work, the cel...

Journal: Journal of Nanoanalysis 2017
Mahnaz Qomi, Majid Karimi, Mansoureh Zarezadeh-Mehrizi, Zahra Kalantari khoramdareh

Polyacrylic acid/ octavinyl polyhedral oligomeric silsesquioxane, nanocomposite hydrogel with 3-D network was synthesized via radical polymerization. Octavinyl polyhedral oligomeric silsesquioxane was used as crosslinker and nanofiller simultaneously in the preparation of the hydrogel. Hydrogel adsorption performance was determined by adsorption of methylene blue. The adsorption capacity was ev...

Journal: :علوم و تکنولوژی پلیمر 0
کبری رهبر شمس کار ابراهیم علایی محبوبه سعیدی ناصر هراثی

tricalcium phosphate as hydroxyapatite is used as a suspension stabilizer in styrene polymerization process. particle size of tcp plays an essential role in the particles’ size distribution and geometrical form of polystyrene products. as the particle size of tcp is reduced, there will be much better chance to engulf the styrene particles. the higher the number of tcp particles surrounding each...

Wharton’s jelly mesenchymal stem cells (HWJMSCs) hold promise for myocardial regeneration, but optimal treatment regimen (preferably with a growth factor) is required to maximize functional benefits. The aim of this study was to explore the cardioprotective and angiogenesis effects of HWJMSCs combined with insulin-like growth factor-1 (IGF-1) in the treatment of acute myocardial infarction. Th...

A novel pH-responsive superabsorbent hydrogel based on gelatin was prepared through crosslinking copolymerization of poly (acrylic acid) and poly (itaconic acid). The copolymerization conditions including monomers, initiator, gelatin and crosslinker concentration, reaction temperature, and neutralization percent were systematically optimized to achieve a hydrogel with swelling capacity as high ...

Journal: :ACS applied polymer materials 2021

The ability to replicate the load-bearing properties of articular cartilage is attractive for many engineering applications, particularly bearings where low friction, wear, and high durability are required. Hydrogels widely used materials spanning diverse applications owing their lubricity unique mechanical/chemical properties. poor mechanical characteristics conventional hydrogels, especially ...

Journal: :Journal of Industrial and Engineering Chemistry 2021

Biofouling is recognized as one of the most problematic fouling types in reverse osmosis (RO) processes and lead to high energy requirements operating costs. Over past decade, many studies on membrane bioreactor (MBR) systems for wastewater applications demonstrated that disrupting cell-cell communications among bacteria, called quorum quenching (QQ), a promising approach inhibit biofouling mem...

Journal: :iranian journal of pharmaceutical research 0
mr avadi ah ghassemi am sadeghi m erfan a akbarzadeh m rafiee-tehrani

chitosan with excellent biodegradable and biocompatible characteristics has received attention as an oral drug delivery vehicle for controlled-release formulations. in this study an enteric-coated capsule containing theophylline-chitosan beads based on 23 factorial designs was prepared as a colon drug delivery system. the theophylline-chitosan gel beads were formulated by adding the drug-contai...

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