نتایج جستجو برای: مواد بسپاری خارج سلولی eps

تعداد نتایج: 117253  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی مهندسی 1388

در فرایندهای زیستی تصفیه فاضلاب به علت فعالیت های میکروبی، مقدار زیادی توده زیستی (لجن فعال مازاد) تولید می شود که به علت حجم زیاد و طبیعت آلوده ای که دارند مشکلات فراوانی هم برای تصفیه خانه ها و هم برای محیط زیست ایجاد نموده اند. از آنجا که این لجن ها معمولاً حاوی درصد بسیار زیادی آب هستند، برای کاهش حجم آنها آب گیری، بهترین روش محسوب می شود. اما آب گیری از لجن ها همواره کار ساده ای نیست. در وا...

ژورنال: دنیای میکروب ها 2013
جواد بهروان سیما افشارنژاد مجید باصری صالحی پرستو پورعلی,

سابقه و هدف: نانوذرات تولید شده با روش بیولوژیکی در عین بی خطر بودن، دارای اثرات ضد باکتریایی مناسبی بر علیه جدایه های مسبب عفونت های انسانی می باشند. این مطالعه با هدف جداسازی و شناسایی سویه های تولید کننده نانوذرات طلا از خاک به صورت درون و برون سلولی و نیز بررسی خواص ضد باکتریایی نانوذرات طلای تولیدی بر علیه 10 باکتری بیماری زا انجام شده است. مواد و روش ها: در این مطالعه پس از جداسازی باکتر...

2016
Siqing Xia Bruce Rittmann Yun Zhou Binh T. Nguyen YenJung Sean Lai Chen Zhou Bruce E. Rittmann

Article history: Received 25 July 2016 Received in revised form 19 September 2016 Accepted 30 October 2016 Available online xxxx Soluble microbial products (SMP) and extracellular polymeric substances (EPS) produced by photoautotrophic cyanobacteria become substrates for heterotrophic bacteria in photobioreactors (PBRs). Understanding the roles of SMP and EPS depends on reliable extraction and ...

Journal: :FEMS microbiology ecology 2013
Zheng Xue Christopher M Hessler Warunya Panmanee Daniel J Hassett Youngwoo Seo

The reactivity of capsular extracellular polymeric substances (EPS) to chlorine and monochloramine was assessed and compared in this study. The impact of capsular EPS on Gram-negative bacteria Pseudomonas aeruginosa inactivation mechanisms was investigated both qualitatively and quantitatively using a combination of batch experiments, viability tests with LIVE/DEAD staining, and Fourier transfo...

2017
Zilian Zhang Ruanhong Cai Wenhui Zhang Yingnan Fu Nianzhi Jiao

Most marine bacteria can produce exopolysaccharides (EPS). However, very few structures of EPS produced by marine bacteria have been determined. The characterization of EPS structure is important for the elucidation of their biological functions and ecological roles. In this study, the structure of EPS produced by a marine bacterium, Alteromonas sp. JL2810, was characterized, and the biosorptio...

Journal: :Microbiology 2002
Cristina Gómez-Suárez Jos Pasma Arnout J van der Borden Jost Wingender Hans-Curt Flemming Henk J Busscher Henny C van der Mei

In this study, the role of extracellular polymeric substances (EPS) in the initial adhesion of EPS-producing Pseudomonas aeruginosa SG81 and SG81R1, a non-EPS-producing strain, to substrata with different hydrophobicity was investigated. The release of EPS by SG81 was concurrent with a decrease in surface tension of a bacterial suspension from 70 to 45 mJ m(-2) that was absent for SG81R1. Both ...

Journal: :Reproductive Biology and Endocrinology : RB&E 2009
Corinne de Vantéry Arrighi Hervé Lucas Didier Chardonnens Ariane de Agostini

BACKGROUND Externalization of phosphatidylserine (EPS) occurs in apoptotic-like spermatozoa and could be used to remove them from sperm preparations to enhance sperm quality for assisted medical procreation. We first characterized EPS in sperms from infertile patients in terms of frequency of EPS spermatozoa as well as localization of phosphatidylserine (PS) on spermatozoa. Subsequently, we det...

Journal: :Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 2011
Mario R Korte Marien W Fieren Denise E Sampimon Hester F Lingsma Willem Weimar Michiel G H Betjes

BACKGROUND Encapsulating peritoneal sclerosis (EPS) is a serious complication of peritoneal dialysis (PD) with an increasing incidence. There is no clear consensus on the treatment of EPS, but anecdotal reports indicate improvement in EPS patients treated with tamoxifen. At present, there is no evidence for the effect of tamoxifen treatment in EPS patients. This study investigates the effect of...

2014
Mineaki Kitamura Tomoya Nishino Yoko Obata Yoshiyuki Ozono Takehiko Koji Shigeru Kohno

Encapsulating peritoneal sclerosis (EPS) is a fatal complication that can occur in patients undergoing long-term peritoneal dialysis. It is characterized by bowel obstruction and marked sclerotic thickening of the peritoneal membrane. Although the mechanisms underlying the development of EPS are complex, angiogenesis, inflammation, and peritoneal fibrosis are known to be essential factors. Now,...

2011
Liang-Ying Wei Ching-Hsue Cheng Hsin-Hung Wu H.-H. WU

Earnings per share (EPS) represents the profitability of a common stock and the financial performance of a particular company. Therefore, EPS is often regarded as a major indicator for investors to purchase stocks. The traditional approach is to use a conventional linear time series model for EPS prediction. However, the results would be in doubt when the forecasting problems are nonlinear. For...

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