نتایج جستجو برای: escherchia coli
تعداد نتایج: 152083 فیلتر نتایج به سال:
با توجه به افزایش مقاومت باکتری‌ها نسبت به آنتی‌بیوتیکها، نیاز به مواد جدید با خواص ضد باکتریایی بیش از بیش احساس می‌شود. از جمله این مواد، می توان به ترکیبات زیست فعال با خواص ضد باکتریایی استخراج‌شده از موجودات دریایی از قبیل مرجان‌ها اشاره کرد. این پژوهش به‌منظور بررسی اثر ضد باکتریایی عصاره‌های متانولی، هیدرو اتانولی و هگزانی دو مرجان دریاییMadracis sp. و Palythoatuberclosa انجام گردید. بع...
چکیده در این مطالعه تاثیر سطوح متفاوت ویتامین c جیره بر فعالیت ضدباکتریایی موکوس، برخی آنزیم های موکوس (فسفاتاز قلیایی و لیزوزیم)، عملکرد رشد و بقا در بچه ماهی کلمه مورد بررسی قرار گرفت. 660 بچه ماهی با میانگین وزن (02/0±4/1) در 12 تانک توزیع شده و در 3 تکرار با 4 جیره مکمل حاوی دوزهای 0، 1000، 1500 و 2000 میلی گرم در کیلوگرم جیره به مدت 60 روز غذادهی شدند. در پایان دوره آزمایش سطوح پروتئین مح...
The paper considers the combined effect of ultraviolet radiation (UV) and ultrasonic cavitation (ultrasonic) as part filtration systems on representatives saprophytic conditionally pathogenic microflora water. Ultrasound examination (25 kHz) is a promising method purification in aquaculture due to possibility inactivation microorganisms agglomerates that are not exposed UV. As result study cult...
Interest to natural medicines is increased for the sake of fewer side effects, microbial resistence and more compatibility to the human body. Centaurea depressa (commonly known "cornflower") belongs to compositeae family, which comprises more than 74 species in Iran. It has been claimed that it can be used in many cases, such as infections, cough, constipation, dermatitis, fever, jaundice, pain...
Cu-substituted 58S bioactive glasses (0-10%mol CuO) were synthesized by sol-gel method and the effect of copper substitution for calcium on their biodegradability, bone-like apatite formation, cell proliferation, alkaline phosphatase activity of M3T3-E1 osteoblast cells and antibacterial efficiency were investigated. The results of x-ray diffraction (XRD) and Fourier transform infrared spectros...
INTRODUCTION According to a study conducted in1989, Enugu State has an estimated urinary schistosomiasis prevalence of 79%. Recently, studies have implicated bacteriuria co-infection in bladder cancer. These bacteria accelerate the multi-stage process of bladder carcinogenesis. Knowledge about the prevalence of this co-infection is not available in Enugu and the information provided by the 1989...
Case 1: A five-year-old girl, a case of acute lymphoblastic leukemia (L1) presented with fever and lethargy a fortnight after receiving the late intensification chemotherapy consist-ing of vincristine, daunorubicin, cytarabine, etoposide, thioguanine and oral dexamethasone over a period of five days (UK ALL X protocol)(8). She had been in a sustained first remission for nearly 18 weeks. Examina...
Eukaryotic cells encode AMP-lysine (AMP-N-(Nacetyl lysine methyl ester) 5 -phosphoramidate) hydrolases related to the rabbit histidine triad nucleotidebinding protein 1 (Hint1) sequence. Bacterial and archaeal cells have Hint homologs annotated in a variety of ways, but the enzymes have not been characterized, nor have phenotypes been described due to loss of enzymatic activity. We developed a ...
Effective tick management on grazing animals is facilitated by accurate noninvasive detection methods. Fecal analysis provides information about animal health and nutrition. Diet affects fecal composition; stress may do likewise. The constituents in feces that may be affected by tick burdens and in turn affect near-infrared spectra have not been reported. Our objective was to examine the intera...
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