نتایج جستجو برای: plant peptones

تعداد نتایج: 396454  

Journal: :Marine pollution bulletin 2013
Jairo Rivera-Posada Ciemon F Caballes Morgan S Pratchett

Effective control of outbreaks of Acanthaster planci represents the most immediate and practical intervention to reverse sustained declines in coral cover on reefs in the Indo-Pacific. This study explored the minimum doses of oxbile, oxgall, and thiosulfate-citrate-bile-sucrose agar (TCBS) that result in reliable and comprehensive mortality when injected into adult A. planci. The minimum doses ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران 1379

در این رساله به ارزیابی عملکرد سیستمهای کنترل دیجیتالˆسیستمهای کنترل با نمونه برداری (sampled-data) پرداخته خواهد شد. بطور خاص ، روش pim (نگاشت سیستم ورودی یا plant input mapping) که تکنیکی جدید در طراحی کنترل کننده های دیجیتال با استفاده از طراحی بعمل آمده در زمان پیوسته است ، مورد بررسی دقیق قرار می گیرد. روش نامبرده دارای خاصیت استقنایی پایداری تضمین شده برای کلیه پریودهای نمونه برداری غیرمع...

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

یکی از مشکلات اساسی در rmmac کلاسیک این است که طراحی سیستماتیک این روش برای plant های ناپایدار امکان پذیر نمی باشد. مشکل اصلی در اینجاست که bpm برای plant های حلقه باز ناپایدار قابل محاسبه نیست. علاوه بر آن، تقسیم سیستماتیک زیرفضای نامعین در rmmac کلاسیک، وابسته به ابزار سنتز µ می باشد و دارای پیچیدگی های نسبتا زیادی است. برای حل مشکلات مذکور، در این تحقیق کنترل تطبیقی مقاوم به روش مدل چندگانه ...

Journal: :Journal of bacteriology 1968
P Laue R E MacDonald

J. B. Egan and M. L. Morse (Biochim. Biophys. Acta 97:310, 1965) reported a defined medium which would support the growth of Staphylococcus aureus NCTC8511 for several generations if a peptone medium culture was diluted into it. In our hands, cultures of S. aureus NCTC8511 or S. aureus HS1159 (obtained from R. Z. Korman, Department of Physical Biology, Cornell University, Ithaca, N.Y.) maintain...

Journal: :Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] 2018
Yolanda Arana-Gabriel Cristina Burrola-Aguilar Roberto Garibay-Orijel Noemí Matías-Ferrer Sergio Franco-Maass Gerardo Mata

The present study conducted a genetic characterization and determined growth rate and biomass production in solid and liquid media, using strains obtained from wild edible sporomes of Lyophyllum that grow in high mountains. Vegetative isolation was used to obtain a total of four strains, which were divided into two clades within the section Difformia: Lyophyllum sp. and Lyophyllum aff. shimeji....

Journal: :The Journal of Experimental Medicine 2003
René Dubos

There are present in commercial peptones substances which exhibit bacteriostatic properties for certain bacterial species. These substances are bacteriostatic in the oxidized form, but not in the reduced form. Their bacteriostatic action can be overcome, and their concentration titrated, by the addition of reduced thiol compounds to the media in which they are present. Different brands of pepto...

2012
Peiqin Li Liang Xu Yan Mou Tijiang Shan Ziling Mao Shiqiong Lu Youliang Peng Ligang Zhou

Berkleasmium sp. Dzf12, an endophytic fungus from Dioscorea zingiberensis, is a high producer of spirobisnaphthalenes with various bioactivities. The exopolysaccharide (EPS) produced by this fungus also shows excellent antioxidant activity. In this study, the experimental designs based on statistics were employed to evaluate and optimize the medium for EPS production in liquid culture of Berkle...

2012
Praveen Kumar

Decolorization of azo dye Red 3BN by two bacterial species Bacillus cereus and B. megaterium has been analyzed using mineral effluent, consisting of known concentration of the dye in ZZ medium. Physico chemical parameters like carbon source, nitrogen source, temperature, pH and inoculum volume are optimized for the decolorization process by changing one parameter at a time. Optimal condition fo...

2012
Rayda Siala Fakher Frikha Samiha Mhamdi Moncef Nasri Alya Sellami Kamoun

Medium composition and culture conditions for the acid protease production by Aspergillus niger I1 were optimized by response surface methodology (RSM). A significant influence of temperature, KH(2)PO(4), and initial pH on the protease production was evaluated by Plackett-Burman design (PBD). These factors were further optimized using Box-Behnken design and RSM. Under the proposed optimized con...

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