نتایج جستجو برای: total pressure

تعداد نتایج: 1167141  

Journal: :Journal of turbomachinery 2022

Abstract A common objective in the analysis of turbomachinery components (nozzle guide vanes (NGVs) or rotor blades, for example) is to calculate performance parameters, such as total pressure kinetic energy (KE) loss coefficients, from measurements a nonuniform flow-field. These parameters can be represented range ways. For example, line-averages used compare between different radial sections ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم 1392

سازند پابده در برش دره شهر شامل 260متر شیل، شیل آهکی، مارن و آهک می باشد. مطالعات انجام شده بر روی فرامینیفرهای پلانکتون منجر به شناسایی و ارائه تعداد 12 بیوزون شده است. این بیوزون ها عبارتند از: بیوزون شماره یک: parasubbotina pseudobulloides partial-range zone ، بیوزون شماره دو: subbotina triloculinoides partial-range zone، بیوزون شماره سه: morozovella angulata partial-range zone ، بیوزون شمار...

Journal: :Journal of Agricultural Meteorology 1995

ژورنال: علوم آب و خاک 2012
سید حسین صادقی, , مهدی قیصری, , مینا کاویانی, ,

To maintain a high system-uniformity and also acceptable water use efficiency in a solid-set sprinkler irrigation system, the total committed pressure variation to subunits should not exceed 20% of the pressure head of the sprinkler which operates with the average pressure. Although some references often recommend giving the major part of this pressure variation to laterals, a scientific and pr...

Journal: :Acta Orthopaedica Belgica 2021

Tourniquet-use has been described in litera- ture as a surgical factor leading to increased post-operative hidden blood loss total knee arthroplasty (TKA). The hypothesis for this retro- spective study was that low-pressure tourniquet TKA would offer the benefits of surgery without potential negative effects on late after procedure. Therefore, evaluated (TBL) and (HBL) with or tourniquet. We re...

In this work, the effects of permeate pressure and feed flow rate on the performance of a composite polyvinyl alcohol (PVA) membrane in the removal of benzene from gasoline by pervaporation (PV) were evaluated. The results indicate the remarkable effect of permeate pressure on membrane performance as reducing permeate pressure (higher vacuum) from 30 to 3 mmHg causes the total flux to increase ...

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