نتایج جستجو برای: airlift pump

تعداد نتایج: 63433  

Journal: : 2023

Purpose. Development of a methodology for optimizing the technological parameters airlift operation, based on analysis pressure balance in annulus and drill string that occurs during drilling. Methodology. The tasks were solved by complex research method, which includes review generalization literary patent sources, analytical studies existing methods drilling with reverse circulation using an ...

Journal: :Journal of Transportation Management 1990

2000
Mark H. Burstein George Ferguson James F. Allen

One of the less appreciated obstacles to scaling multi-agent systems is understanding the impact of the role(s) that people will play in those systems. As we try to adapt existing software tools and agent-based applications to play supportive roles in larger multi-agent systems, we must develop strategies for coordinating not only the problem solving behavior of these agent communities, but als...

2003
G. VISNOVSKY J. D. CLAUS J. C. MERCHUK

Large-scale cultivation is an essential step towards the feasible production of baculovirus in insect cell cultures. Airlift reactors appear to offer considerable advantages over other insect cell culture systems. In order to evaluate the impact of reactor design on the behavior of insect cell cultures, the IPLB-Sf-21 cell line was cultivated in three different concentric tube airlift reactors ...

Journal: :acta medica iranica 0
seyed khalil forouzannia cardiovascular research center, afshar hospital, shahid sadooghi university of medical sciences, yazd, iran. mohammad hassan abdollahi cardiovascular research center, afshar hospital, shahid sadooghi university of medical sciences, yazd, iran. seyed jalil mirhosseini cardiovascular research center, afshar hospital, shahid sadooghi university of medical sciences, yazd, iran. habibollah hosseini cardiovascular research center, afshar hospital, shahid sadooghi university of medical sciences, yazd, iran. seyed hossein moshtaghion cardiovascular research center, afshar hospital, shahid sadooghi university of medical sciences, yazd, iran. azam golzar cardiovascular research center, afshar hospital, shahid sadooghi university of medical sciences, yazd, iran.

general concept and major emphasis on off-pump coronary artery bypass surgery (opcab) is maintaining quality of care and patient safety while reducing cost and resource utilization. opcab probably avoids the potential complications of cardiopulmonary bypass. however its acceptance depends on clinical and economic outcome. the aim of this study is to compare clinical and economic outcome of off-...

Introduction: Coronary artery bypass grafting is a surgical operation that bypasses atherosclerotic coronary vessels and restores blood flow to the ischemic zone of hearts. And two different conventional methods are ON-pump CABG, and Off-pump CABG.  Altogether, the efficacy and safety of these two types of surgical procedures are still under debate. In this study, we aim to com...

Journal: :Chemical Engineering Research and Design 2004

Journal: :iranian journal of biotechnology 2007
marjan varedi kolaei ramin karimzadeh seyed abbas shojaosadati jafar towfighi

in this work, mathematical modeling of microbial(trichosporon sp.) biomass production in a stirred tankbioreactor and in an external airlift bioreactor has beeninvestigated. a model based on a tanks-in-seriesmodel without back-flow has been used to simulate theproduction of single cell protein in the external airliftbioreactor under an unsteady condition and withoutoxygen limitation, utilizing ...

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