نتایج جستجو برای: روش اضمحلال گردابه edc

تعداد نتایج: 371328  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده مهندسی 1390

یکی از فعال ترین زمینه های تحقیقاتی در علم مکانیک سیالات بررسی اثرات متقابل سیال و سازه های جامد مانند اسکله ها و سازه های ساحلی، دودکش ها، برج های خنک کن و برخی از انواع مبدل های حرارتی و پایه های پل هاست. با توجه به هندسه ی کلی و یا اجزای تشکیل دهنده ی این نوع سازه ها، مطالعه ی جریان گذرا از اجسام استوانه ای شکل از اهمیت و جایگاه ویژه ای برخوردار است. از این رو از سال ها قبل بررسی جریان حول ی...

2012
F. Parrenin

We compare a variety of methods for estimating the gas/ice depth offset (1depth) at EPICA Dome C (EDC, East Antarctica). (1) Purely based on modelling efforts, 1depth can be estimated combining a firn densification with an ice flow model. (2) The diffusive column height can be estimated from δ15N and converted to 1depth using an ice flow model and assumptions about past average firn density and...

2015
Yu-Zhou Guan Li-Ying Cui Ming-Sheng Liu Jing-Wen Niu

BACKGROUND Single-fiber electromyography (SFEMG) abnormality in the extensor digitorum communis (EDC) was reported in ocular myasthenia gravis (OMG), which indicated subclinical involvement beyond extraocular muscles in OMG patients. The relationship between the abnormal findings of SFEMG in EDC and the probability for OMG to develop generalized myasthenia gravis (GMG) is unknown. This retrospe...

2012
Yesid Jarma

During the last few years, the rise of the Internet has changed the way business is conducted worldwide. To remain competitive, businesses have been implementing information technology support for business processes over the years. In this context, Service Oriented Architectures (SOA) have emerged as the main solution for the integration of legacy systems with new technologies within large orga...

مهدی هاشم آبادی کاظم هجران فر,

در تحقیق حاضر، ارزیابی روش‌های پانل و شبکه‌ی گردابه به‌همراه مدل‌سازی دنباله‌ی آزاد در تحلیل آئرودینامیکی روتور بالگرد در پرواز ایستایی مد نظر بوده و با مقایسه‌ی نتایج حاصل از این دو روش، اثرات ضخامت تیغه‌ها روی نتایج آئرودینامیکی روتور مورد بررسی قرار گرفته است. مزیت اساسی روش پانل نسبت به روش شبکه‌ی گردابه در تحلیل آئرودینامیکی روتور بالگرد، درنظر گرفتن اثرات ضخامت تیغه‌ها و درنتیجه افزایش دق...

1996
Ezra Bar-Ziv

Physicochemical processes of single liquid and solid particles have been studied in an electrodynamic chamber (EDC) in the size from 0.1 to 250 micron and in the temperature range 300-3500 K. From the forces applied on a heated particle suspended in an EDC (gravity, electric, free convection, photophoretic, imposed flow) one can deduce valuable information on significant changes that the partic...

Journal: :Life sciences 2016
Faheem Maqbool Sara Mostafalou Haji Bahadar Mohammad Abdollahi

Endocrine disrupting chemicals (EDC) are released into environment from different sources. They are mainly used in packaging industries, pesticides and food constituents. Clinical evidence, experimental models, and epidemiological studies suggest that EDC have major risks for human by targeting different organs and systems in the body. Multiple mechanisms are involved in targeting the normal sy...

Journal: :Applied and environmental microbiology 2002
Yoshikazu Koizumi John J Kelly Tatsunori Nakagawa Hidetoshi Urakawa Saïd El-Fantroussi Saleh Al-Muzaini Manabu Fukui Yoshikuni Urushigawa David A Stahl

A mesophilic toluene-degrading consortium (TDC) and an ethylbenzene-degrading consortium (EDC) were established under sulfate-reducing conditions. These consortia were first characterized by denaturing gradient gel electrophoresis (DGGE) fingerprinting of PCR-amplified 16S rRNA gene fragments, followed by sequencing. The sequences of the major bands (T-1 and E-2) belonging to TDC and EDC, respe...

Journal: :Environmental science & technology 2007
Markus Bauer Tobias Heitmann Donald L Macalady Christian Blodau

Information about electron-transfer reactions of dissolved organic matter (DOM) is lacking. We determined electron acceptor and donor capacities (EAC and EDC) of a peat humic acid and an untreated peat DOM by electrochemical reduction and reduction with metallic Zn and H2S (EAC), and by oxidation with complexed ferric iron (EDC) at pH 6.5. DOC concentrations (10-100 mg L(-1)) and pH values (4.5...

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