نتایج جستجو برای: zone of inhibition

تعداد نتایج: 21188399  

Plants or natural resources have been found to be a good alternative method for nanoparticles synthesis. In this study, polyaniline coated silver nanoparticles (AgNPs) synthesized from Piper betle leaves extract were investigated for their antibacterial activity. Silver nanoparticles were prepared from the reduction of silver nitrate and NaBH4 was used as reducing agent. Silver nanoparticles an...

Journal: :international journal of molecular and clinical microbiology 0
s aghaei department of microbiology, science and research branch, islamic azad university, fars, iran; department of microbiology, shiraz branch, islamic azad university, shiraz, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی شیراز (islamic azad university of shiraz) nima bahador department of microbiology, shiraz branch, islamic azad university, shiraz, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی شیراز (islamic azad university of shiraz) majid baserisalehi department of microbiology, kazeroun branch, islamic azad university, kazeroun, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی کازرون (islamic azad university of kazerun)

the genus rhodococcus is gram positive bacterium which was classified into the family of nocardiaceae. the organism can be isolates from different sources, with capability to degrade diverse types of pollutant. nowadays, scientists reported a few secondary metabolites which are produced by rhodococci. hence, the present study tried to isolate rhodococci from different soil samples with the capa...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه دریانوردی و علوم دریایی چابهار - دانشکده ادبیات و زبانهای خارجی 1390

abstract cooperative learning refers to small groups of learners working together as a team to solve a problem, complete a task, or accomplish a common goal. in a cooperative environment one’s success is directly related to the success of other members because the focus on the individual shifts towards the group. to test the effectiveness of the method, using jigsaw technique, a study was cond...

ژورنال: مجله دندانپزشکی 2008
اکبری نخجوانی, فرخ, شیخ‌رضایی, محمد سعید, نگهبانی, سعید,

Background and Aim: Elimination of microorganisms and their byproducts from root canal system is one of important aims of root canal therapy. This object is gained by using of many chemomechanical techniques but with noncertain success. A new method is used of nonpathogenic bacteria for growth inhibition of pathogenic bacteria, Antibiosis, in root canal therapy.The aim of this study was in vitr...

Journal: :annals of military and health science research 0
بهزاد قاسمی behzad ghasemi department of pathobiology, faculty of veterinary, university of zabol, zabol, iran. حمید بیضایی hamid beyzaie department of chemistry, faculty of science, university of zabol, zabol, iran. هادی هاشمی hadi hashemi department of clinical sciences, faculty of veterinary, university of zabol, zabol, iran.

purpose: in this study, we have focused on antibacterial effect of newly synthesized thiazole, imidazole and tetrahydropyrimidine derivatives in iran on listeria monocytogenes. materials and methods: for evaluation of antibacterial effect, the disk diffusion method was applied to measure the growth inhibition zone diameter and broth micro dilution was performed to determine the minimum inhibito...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

in this study, scour of mashkid bridge pier located in mashkid river of saravan county has been studied and to measure the scour rate, the numerical model hec-ras 4.0 has been used. upon selection of mashkid river as the case study and whereas the studied zone is important with respect to the climatic conditions and showery monsoon raining and flowing the great and destructive floodwaters, ther...

Journal: :Journal of neurophysiology 1979
G A Orban H Kato P O Bishop

1. Subregions in the receptive fields of hypercomplex cells have been examined by a variety of quantitative methods with particular reference to the dimensions and properties of the end-zone inhibitory areas. These data have made it possible to construct detailed maps of the receptive-field organization of the two types of hypercomplex cell (I and II). 2. The spatial extent of the end-zone inhi...

Journal: :medical laboratory journal 0
shirin sheikholeslami pharmaceutical sciences branch, islamic azad university, tehran, iran seyed mahdi rezayat pharmaceutical sciences branch, islamic azad university, tehran, iran reza hosseini doust pharmaceutical sciences branch, islamic azad university, tehran, iran hamid reza ahmadi ashtiani islamic azad university, pharmaceutical sciences branch, tehran, iran

abstract       background and objective: the spread of drug resistance in bacteria have prompted researchers to seek suitable alternative for antimicrobial drugs among various medicinal plants and nanoparticles. the aim of this study was to evaluate the effect of silver nanoparticles alone and in combination with methanol extract of zataria multiflora on five gram-positive and gram-negative bac...

2009

The aim of this study is to determine the sensitivity of polyphenol green tea on mutans streptococci. Tea is a traditional drink that is beneficial to health. One of its benefits is its capability to prevent dental caries because it has active substance polyphenol.An extract of green tea non-fermented tea leaves of Camellia sinensis and its chromatographically isolated polyphenol compound was e...

Journal: :journal of dental biomaterials 0
hamid reza poureslami associate professor, dept. of pediatric dentistry, kerman dental school fereshteh barkam school of dentistry, kerman university of medical sciences, kerman, iran parnian poureslami school of dentistry, mashhad university of medical sciences, mashhad, iran zahra salari department of periodontology, school of dentistry, kerman university of medical sciences, kerman, iran somayeh salari

statement of problem: dental plaque is the main source for dental caries and there is no proper vaccine that can affect dental plaques. objectives: daily use of an efficient anti-plaque product can be very beneficial in plaque control and, thus, prevention of caries. this study aims to evaluate the antibacterial effects of four products of chlorhexidine and fluoride on two types of cariogenic b...

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