نتایج جستجو برای: mixing chamber

تعداد نتایج: 104905  

Journal: :The Onderstepoort journal of veterinary research 1990
R K Reinecke

Nematode eggs were collected by mixing the faeces with a sugar solution, filling a flat-sided medicine bottle (100 ml), and allowing eggs to float and adhere to the upper surface for 30 min. After discarding the faeces, eggs hatched within 24 h at 20-30 degrees C. Each genus was counted in a counting chamber and the L1p.g. estimated. The morphology of L1 of Haemonchus, Teladorsagia, Trichostron...

Journal: : 2021

The paper presents the numerical results on gas-dynamic processes in various elements of impulse ejector, including pre-chamber, supersonic nozzle and mixing chamber, to determine optimal geometric parameters providing given flow rate characteristics. At an extra-high pressure ejecting gas (>100 bar) it is impossible create a design with continuously changing cross-sectional area limited len...

Journal: :بینا 0
محمد پاکرولن m pakravan ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم فریده شریفی پور f sharifipoor jondi shapoor university of medical sciences, ahvaz, iranدانشگاه علوم پزشکی اهواز شاهین یزدانی sh yazdani ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم نسیم کوهستانی n kohestani ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم نسیم عموهاشمی n amohashemi ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranتهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم مهدی یاسری m yaseri دانشکده بهداشت- دانشگاه علوم پزشکی تهران

purpose: to compare anterior segment and ocular biometric parameters of unaffected fellow eyes of patients with a previous attack of acute angle closure (aac), primary angle closure suspect (pacs) eyes, and normal eyes; and to assess the risk of developing aac in pacs. methods: in this prospective comparative observational case series, 16 unaffected fellow eyes of patients with a previous attac...

2016
T. Hohaus U. Kuhn S. Andres M. Kaminski F. Rohrer R. Tillmann A. Wahner R. Wegener Z. Yu

A new PLant chamber Unit for Simulation (PLUS) for use with the atmosphere simulation chamber SAPHIR (Simulation of Atmospheric PHotochemistry In a large Reaction Chamber) has been built and characterized at the Forschungszentrum Jülich GmbH, Germany. The PLUS chamber is an environmentally controlled flow-through plant chamber. Inside PLUS the natural blend of biogenic emissions of trees is mix...

Journal: :بینا 0
محمدرضا روحانی mr rohani zahedan university of medical sciences, zahedan, iranزاهدان، بلوار شهید مطهری، بیمارستان چشم پزشکی الزهرا (س) مهسا پرهیزکار m parhizkar zahedan university of medical sciences, zahedan, iranزاهدان، بلوار شهید مطهری، بیمارستان چشم پزشکی الزهرا (س) هدی خلاقی h khalaghi zahedan university of medical sciences, zahedan, iranزاهدان، بلوار شهید مطهری، بیمارستان چشم پزشکی الزهرا (س) محمدحسن ولیداد mh validad zahedan university of medical sciences, zahedan, iranزاهدان، بلوار شهید مطهری، بیمارستان چشم پزشکی الزهرا (س)

purpose: to evaluate changes in anterior chamber (ac) parameters before and one month after nd:yag capsulotomy. methods: a total of 30 eyes from 27 patients with posterior capsule opacification graded 2-4 with surgical history of uneventful phacoemulsification and acrylic foldable iol implantation were included in this study. before capsulotomy and one month later, anterior chamber depth, volum...

Journal: :Analytical chemistry 2003
Yu Lin Gary J Gerfen Denis L Rousseau Syun-Ru Yeh

The freeze-quenching technique is extremely useful for trapping meta-stable intermediates populated during fast chemical or biochemical reactions. The application of this technique, however, is limited by the long mixing time of conventional solution mixers and the slow freezing time of cryogenic fluids. To overcome these problems, we have designed and tested a novel microfluidic silicon mixer ...

2017
Pavlos Dimitriou Weiji Wang Jun Peng Li Cheng Matthias Wellers Bo Gao

With a view to understanding the air-fuel mixing behavior and the effects of the mixture quality on the emissions formation and engine performance, a new quantitative factor of the in-cylinder air-fuel homogeneity named Homogeneity Factor (HF) has been developed. Its characteristics under various injection conditions and air swirl motions within the cylinder have been investigated with CFD simu...

S. S. Dargahi

The Miocene pyroxene andesite lava flows are exposed in southeastern edge of Urumieh Dokhtar Magmatic assemblage in Iran. The hypocrystalline andesite in parts contain conspicuous co-magmatic igneous enclaves which are dark grey and occur mostly as spherical and occasionally as ribbon shapes with some showing chilled margins. Petrographic study shows that the ribbon type enclaves have been form...

2013
An-Shik Yang Yi-Fan Hsieh Long-Sheng Kuo Li-Yu Tseng Shao-Kai Liao Ping-Hei Chen

Effective mixing is vitally important to many microfluidic devices in the areas of biotechnical industries, analytic chemistry and medical industries. However, most micro-mixers require complicated fabrication procedures, possibly inappropriate for practical microfluidic utilization. These mixers generally operate under low Reynolds-number conditions, causing a relatively long reaction time in ...

Journal: :Biophysical journal 1973
M H Smith

The principle of dimensional analysis of liquid flow has been applied to the problem of rapid mixing in flow apparatus. A model of the Hartridge-Roughton mixing chamber and observation tube has been scaled approximately 1/1.000 so that the times after mixing are approximately 6 s, the flow velocities are the order of 2 cm/s, and the distance from mixing to observation is 120 mm. Visual observat...

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