نتایج جستجو برای: induced airlift loop bioreactor

تعداد نتایج: 1107149  

این پژوهش مراحل تهیه، شناسایی و ارزیابی عملکرد غشاهای میکروفیلتراسیون زمینه مخلوط با خاصیت ضد گرفتگی را نشان می‌دهد. هدف اصلی این پزوهش، بررسی تأثیر چارچوب­های آلی-فلزی (MOFs) به‌عنوان پرکننده در مقیاس نانو برای تولید غشای زمینه مخلوط از پلیمر پلی وینیلیدین فلورید (PVDF) می‌باشد که به روش وارونگی فاز ساخته‌شده است. عکس­های میکروسکوپ الکترونی(SEM)  نشان داد که با افزایشMOF(TMU-5)، اندازه حفره و ...

Journal: :Mathematical and Computer Modelling 2004

2001
B. A. Peters J. S. Smith D. J. Medeiros Julien Granger Ananth Krishnamurthy Stephen M. Robinson

Large-scale military deployments require transporting equipment and personnel over long distances in a short time. Planning an efficient airlift system is complicated and several models exist in the literature. Particularly, a study conducted on a deterministic optimization model developed by the Naval Postgraduate School and the RAND Corporation has shown that incorporating stochastic events l...

Journal: :Journal of biotechnology 2001
S O Enfors M Jahic A Rozkov B Xu M Hecker B Jürgen E Krüger T Schweder G Hamer D O'Beirne N Noisommit-Rizzi M Reuss L Boone C Hewitt C McFarlane A Nienow T Kovacs C Trägårdh L Fuchs J Revstedt P C Friberg B Hjertager G Blomsten H Skogman S Hjort F Hoeks H Y Lin P Neubauer R van der Lans K Luyben P Vrabel A Manelius

Escherichia coli fed-batch cultivations at 22 m3 scale were compared to corresponding laboratory scale processes and cultivations using a scale-down reactor furnished with a high-glucose concentration zone to mimic the conditions in a feed zone of the large bioreactor. Formate accumulated in the large reactor, indicating the existence of oxygen limitation zones. It is suggested that the reduced...

2001
Marc A. Deshusses Wifred Chen Ashok Mulchandani Irving J. Dunn

Recent papers have described new bioreactor designs. Most innovations addressed either oxygen transfer, shear induced by stirring, control of water activity in organic phase systems or waste biotreatment. The latest developments in these key areas are reviewed and discussed.

Objective: The present study was aimed to study anti-diarrhoeal activity of a polyherbal formulation (PHF) in rats and elucidate its mechanism of action. Materials and Methods: Anti-diarrhoeal activity of PHF was investigated using castor oil-induced diarrhoea, small intestinal transit and enteropooling models in rats. PHF was tested at 75, 150 and 300 mg...

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