نتایج جستجو برای: bacteria

تعداد نتایج: 180289  

Journal: :iranian journal of public health 0
p. owlia mh. salari h. saderi z. kadkhoda

in this study 100 cases of advanced periodontitis were compared with a control group of 100 persons. the parameters were the depth of the periodontal pockets, radiographic images, presence of inflammatory cells and different types of anaerobic bacteria in the pockets. the depth of pocket was measured by a sterile probe and the presence of inflammatory cells was determined through sterile curett...

Journal: :iranian journal of microbiology 0
fahimeh ghanbarinia basic science department, faculty of biology, hakim sabzevary university, sabzevar, iran, post code:9617976487. mitra kheirabadi basic science department, faculty of biology, hakim sabzevary university, sabzevar, iran, post code:9617976487. nasrin mollania basic science department, faculty of biology, hakim sabzevary university, sabzevar, iran, post code:9617976487.

background and objectives: heavy metals are considered as high risk biocides due to their harmful effects on human health, the environment and other living organisms. bacterial strains showing resistance to heavy metals has been used for removing such toxic materials from the environment. in this study we isolated and characterized a heavy metals-resistance halophilic bacterial strains from kal...

Journal: :iranian journal of public health 0
a khorshidi ar sharif

background: recent analyses of hospital outbreaks have documented the spread of resistance to imipenem, which is cur­rently a major problem among gram positive and gram-negative bacteria. the aim of this study was to describe the rate of gram- positive and gram-negative isolates resistance to imipenem as an antibiotic. methods: recorded files of 242 hospitalized patients with at least one sampl...

Journal: :jundishapur journal of natural pharmaceutical products 0
maryam ekhtelat department of pharmacognosy, school of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of pharmacognosy, school of pharmacy, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-9161130232, fax: +98-6133738381

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه الزهراء - دانشکده علوم پایه 1390

با توجه به اهمیت به کارگیری الگوی دارویی مناسب در بیماری های عفونی، تحقیقاتی در جهت ابداع روش های سریع تعیین رژیم آنتی بیوتیکی صورت گرفته است. هدف از مطالعه حاضر طراحی محیط های کلریمتریک جهت کوتاه شدن زمان تعیین الگوی حساسیت آنتی بیوتیکی، کاهش هزینه های ناشی از مصرف داروهای غیر ضروری و همچنین کاهش عوارض جانبی ناشی از مصرف بی رویه آنتی بیوتیک ها می باشد. طراحی این محیط ها بر اساس رشد سریع میکروا...

Journal: :The Ulster Medical Journal 1952
S C Rittenberg

IliE fourtlh editioni of this already well know-n text-book of surgical treatment is hiighly recommIleInded. It wvill b)e greatly appreciated by the senior medical studenit and those post-graduate students wishinig to specialise in sur-gery. Anl effor-t to keep abreast of the ever-widening field of surgery has been miade; eacth chapter lhas been car-efully revisedl and many greatly amplified. U...

Journal: :international journal of mining and geo-engineering 0
javad vazife mehrabani school of mining engineering, sahand university of technology, tabriz, iran seyyed ziaadin shafaei school of mining engineering, college of engineering, university of tehran, tehran, iran mohammad noaparast school of mining engineering, college of engineering, university of tehran, tehran, iran mohammad mousavi biotechnology group, chemical engineering department, tarbiat modares university, tehran, iran

in this research work, the zinc extraction was investigated, using bioleaching process from a low grade zinc concentrate which was produced from the accumulated flotation tailings. zinc content was initially upgraded to 11.97% by flotation process. bioleaching experiments were designed and carried out by a mixed culture of acidithiobacillus ferrooxidans, acidithiobacillus thiooxidans, leptospir...

Journal: :Science 1900

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده فنی 1392

یکی از روش های نوین حذف بیولوژیکی نیتروژن، فرایند نیتریفیکاسیون و دنیتریفیکاسیون همزمان (snd) است. انجام این فرایند در راکتورهای بیوفیلمی مزایایی نظیر هزینه پایین و راندمان بالا دارد. در این تحقیق حذف n-nh_4^+، cod،no_3^--n، tn (نیتروژن کل) و رشد بیومس معلق طی فرایند snd در راکتور mbbr (moving bed biofilm reactor) با انجام مدلسازی ریاضی مورد مطالعه قرار گرفت. در این مدل انتقال جرم اکسیژن از فاز...

Journal: :jundishapur journal of microbiology 0
shaza anwar al laham pharmacology and toxicology department, faculty of pharmacy, damascus university, damascus, syria; pharmacology and toxicology department, faculty of pharmacy, damascus university, damascus, syria. tel: +96-30113136591, fax: +96-30113312041 frdoos mohammad al fadel pharmacology and toxicology department, faculty of pharmacy, damascus university, damascus, syria

conclusions ethanol extracts of p. granatum (pericarp, leaves, flowers, seeds) have antibacterial effects against p. haemolytica which has shown resistance to all studied antibiotics. background continuous researches on drugs that solve the problem of growing number of resistant bacteria are important. objectives this research aims to investigate the effectiveness of anti-bacterial properties s...

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