نتایج جستجو برای: Keywords: Gold nanoparticles

تعداد نتایج: 2134931  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده شیمی 1392

in the present work, a simple and sensitive method was developed for determination of morphine and heroin using gold nanoparticles as resonance rayleigh scattering (rrs) and colorimetric technique’s probe. synthesized gold nanoparticles by sodium citrate reduction method have a negative charge layer on their surfaces because of self-assembled citrate anions on their surface. binding of morphin...

Background and Objectives: Actinobacteria efficiently can produce different nanoparticles with different biological properties due to their ability to produce secondary metabolites. The aim of present study, isolation and screening of gold nanoparticles via producing actinobacteria from the soil were studied and their antibacterial activities was evaluate. Methods: In this study, after iso...

2015
M. S. Kilic S. Korkut B. Hazer

Newly synthesized Polypropylene-g-Polyethylene glycol polymer was first time used for a compartment-less enzymatic fuel cell. Working electrodes based on Polypropylene-g-Polyethylene glycol were operated as unmediated and mediated system (with ferrocene and gold/cobalt oxide nanoparticles). Glucose oxidase and bilirubin oxidase was selected as anodic and cathodic enzyme, respectively. Glucose w...

2015
Ahmad Alshammari Abdulaziz Bagabas

Rhodamine B (RB) is a toxic dye used extensively in textile industry, which must be remediated before its drainage to environment. In the present study, supported gold nanoparticles on commercially available titania and zincite were successfully prepared and then their activity on the photodegradation of RB under UV A light irradiation were evaluated. The synthesized photocatalysts were charact...

2015
Sahar S. Abd El-Rahman

This study evaluated the acute toxicity and tissue distribution of intravenously administered gold nanoparticles (AuNPs) in male rabbits. Rabbits were exposed to single dose of AuNPs (300 μg/ kg). Toxic effects were assessed via general behavior, hematological parameters, serum biochemical parameters, and histopathological examination of various rabbits’ organs. Inductively coupled plasma–mass ...

Journal: :international journal of nanoscience and nanotechnology 2011
z. sheikhloo m. salouti

in this study, the biosynthesis of gold nanoparticles by penicillium chrysogenum, isolated from ahar copper mine, was investigated. the gold nanoparticles were synthesized by reducing the aqueous gold ions using the culture supernatant of the filamentous fungi. the uv–vis spectrum displayed a characteristic peak at 532 nm that is very specific for gold nanoparticles. the xrd spectrum confirmed ...

Background & Aim: Molecular imaging enables us to non-invasively visualize tissue microstructures and lesion characterization, allowing accurate diagnosis of diseases at early stages. A successful molecular imaging requires a nontoxic contrast agent with high sensitivity. Nowadays, a wide range of nanoparticles have been developed as contrast agents for medical imaging modalities. Here, we revi...

Journal: :nanomedicine journal 0
amir hooshang mohammadpour department of clinical pharmacy, school of pharmacy, pharmaceutical research center, mashhad university of medical sciences, mashhad iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) alireza tavassoli endoscopic & minimally invasive surgery research centre, ghaem hospital, faculty of medicine, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) mohammad reza khakzad allergy research center, mashhad university of medical sciences, mashhad, iran, department of immunology, mashhad branch, islamic azad university, mashhad, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی مشهد (islamic azad university of mashhad) elahe zibaee department of clinical pharmacy, school of pharmacy, mashhad university of medical science, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) mohammad afshar department of anatomy, faculty of medicine, birjand university of medical sciences, birjand, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی بیرجند (birjand university of medical sciences) mahmoud hashemzaei department of pharmacology and toxicology, school of pharmacy, zabol university of medical scienceسازمان اصلی تایید شده: دانشگاه علوم پزشکی زابل (zabol university of medical sciences)

objective(s): abdominal adhesions are one of the most important problems, occurring after intra-abdominal surgery in more than 90% of cases. this condition is the leading cause of bowel obstruction, infertility, and abdominal/pelvic pain. gold nanoparticles (gnps) have been shown to be non-toxic and exhibit anti-inflammatory, anti-angiogenic and antioxidant activities. the purpose of this study...

Journal: :iranian journal of radiation research 0
m. khadem-abolfazli physics department, mazandaran university, babolsar, iran m. mahdavi physics department, mazandaran university, babolsar, iran s.r.m. mahdavi medical physics department, iran university of medical sciences, tehran, iran gh. ataei para medical school, babol university of medical sciences, babol, iran

background: radiation-sensitive polymer gels are among the most promising three-dimensional dose verification tools and tissue-like developed to date. among the special features of this type of dosimeters, is be doped with other elements or chemicals which made them appropriate for investigating of dose enhancement with contrast agents, by high atomic number. material and methods: in this study...

Journal: :avicenna journal of medical biotechnology 0

today, there is an increasing interest in the use of metal nanoparticles in health sciences. amongst all nanoparticles, the gold nanoparticles have been known to kill the cancer cells under hyperthermic condition by near-infrared frequency electromagnetic waves. on the other hand, although there are different physiochemical methods for disinfection of microbial pollution, however applications o...

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