نتایج جستجو برای: bacterial count
تعداد نتایج: 348628 فیلتر نتایج به سال:
the aim of this study was to assess the effects of nucleotide on intestinal microbiota of striped catfish, pangasianodon hypophthalmus . different levels of the nt (0, 0.25. 0.5, 0.75 and 1 % weight per weight, ww -1 ) were added to basal diet and then randomly allocated to triplicate groups of fish with average initial weight (1.52±0.11 g) for 10 weeks. at the end of the experiment, at least 1...
AIM To compare the bacterial reduction achieved with reciprocating and rotary systems during root canal preparation. METHODOLOGY Sixty distobuccal root canals of maxillary molars were contaminated with Enterococcus faecalis broth culture. After an incubation period of 21 days, bacterial samples were collected and cultured on m-Enterococcus agar plates. The root canals were divided into five g...
Introduction: Spontaneous bacterial peritonitis (SBP) is a prevalent complication in the patients with cirrhosis and ascites, which leads to high intrahospital mortality. Diagnosis is made when ascetic fluid neutrophils is ≥250 cells/mm3. Manual counting of neutrophils is time-consuming, technically difficult, expensive and in many cases individual-dependent. In contrast, automated counting ...
BACKGROUND The healthy human intestine is represented by the presence of bacterial communities predominantly belonging to obligate anaerobes; however disparity and dysanaerobiosis in intestinal microflora may lead to the progression of ulcerative colitis (UC). The foremost aim of this study is to consider and compare the gut microbiota composition in patients suffering from different stages of ...
Rationally designed amphiphilic small molecules selectively kill drug-sensitive and drug-resistant bacteria over mammalian cells. The small molecules disperse preformed biofilms and reduce viable bacterial count in the biofilms. Moreover, this class of membrane-active molecules disarms the development of bacterial resistance.
Spontaneous bacterial peritonitis is defined by a positive ascitic fluid bacterial culture and an elevated ascitic fluid absolute polymorphonuclear count (≥250 cells/mm3) without an evident intra-abdominal, surgically treatable source of infection. Transient ascites is well documented in patients with extrahepatic portal venous obstruction but spontaneous bacterial peritonitis complicating extr...
Introduction: This pilot study compared the effect of tongue cleaning by using a tongue brush alone and the one of combined using a tongue brush and toothbrush. Materials and Methods: 20 healthy young men were studied. The effect of tongue cleaning was assessed according to the following three criteria, including a tongue coating index, H2S concentration and oral bacterial count. These criteria...
تغییرات غلظت گاز رادون درون آبهای زیرزمینی، یکی از پیش نشانگرهای شناخته شده زلزله می باشد. در گذشته روش های متعددی جهت اندازه گیری غلظت رادون درون آب ارائه شده است. در این پایان نامه با استفاده از کد mcnpx امکان اندازه گیری مستقیم تغییرات گاز رادون درون آب با استفاده از آشکارساز گایگر مولر مورد بررسی قرار گرفته است. برای این منظور یک آشکارساز گایگر مولر قرار گرفته در استوانه ای تفلونی که در آب ...
Introduction: Early childhood caries (ECC) is one of the most common problems in children worldwide which is seen in 3-45% preschool children population. Bacterial factor is one of the main four components (time, microorganism, diet, host) to create caries. Streptococcus mutans is one of the most important cariogenic microorganisms. The objective of this study is evaluating Streptococcus mutans...
Abstract Background: Dental caries are one of the major clinical problems. Bacterial treatment is an alternative technique for pathogen microorganism replacement. The most common bacterial treatment technique is using probiotic bacteria. The aim of this study was to evaluate short-term consumption of probiotic yogurt on salivary Streptococcus mutans and Lactobacillus in adult. Materials and met...
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