نتایج جستجو برای: cascade hybrid

تعداد نتایج: 234900  

Journal: :Nature Chemistry 2011

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان - دانشکده مهندسی مکانیک 1391

در مواردی که به تبرید در دماهای پایین نیاز است از جمله درسیستم های انجماد سریع و همچنین در تبرید مرحله ای مقرون به صرفه نیست. چرا که نسبت فشار بالاو نرخ بالای تراکم در کمپرسور که منجر به (high discharge problem) می شود و فشار و دمای خروجی بالای روغن بازده و بازده حجمی و ضریب عملکرد پایین سیکل را به همراه دارد. صنعتی که اختلاف دمای زیاد بین منبع و چاه حرارتی وجود دارد استفاده از سیستم های تبرید ...

2015
Helena Bogusz Renata Płocińska Jarosław Dziadek Małgorzata Bohdanowicz Bożena Bruhn-Olszewska Katarzyna Potrykus

Mycobacterium tuberculosis (M.tb) is one of the oldest known infectious factor, causing tuberculosis. This is still one of the major causes of mortality. The success of M. tuberculosis as a pathogen is connected to its ability to adapt to a wide range of living conditions inside as well as outside the human host. This serious pathogen has spread intensively worldwide and recent years have seen ...

2016
J. Ramprabu K. Deepa

In this paper, a non isolated multi-input multi-output dc–dc boost converter is proposed. This converter is used to implant alternative energy sources in electric vehicles. However, advantages of different sources of energy are achievable by the implant energy sources. This converter has many outputs with different voltage levels, which can be interfaced with multilevel inverters. In this conve...

Journal: :Plasma Sources Science and Technology 2021

A plasma rotating spoke in a crossed field discharge is studied using 2D radial-azimuthal fully kinetic Particle-In-Cell Monte Carlo Collision (PIC/MCC) simulations. The model reveals the whole perturbation spectrum of gradient drift instability linear stage: Simon-Hoh, lower-hybrid and ion sound modes, providing direct evidence nature. two-fluid dispersion relation was utilized to analyze deve...

Journal: :Nature Climate Change 2010

Journal: :Chemical communications 2011
Malek Nechab Eric Besson Damien Campolo Patricia Perfetti Nicolas Vanthuyne Emily Bloch Renaud Denoyel Michèle P Bertrand

Mesoporous silica grafted with a tertiary amine was used as a basic nanocatalyst to promote in confined medium the enantioselective cascade rearrangement of enediynes based on the phenomenon of memory of chirality; the multi-substrates recyclable catalytic reagent could easily be recovered by simple filtration, and reused without any decrease in activity even when changing the solvent.

      Rain gauge stations that measure fine scale rainfall are mainly limited in number or in the length of the recorded data. Therefore, temporal disaggregation models have been considered because of their ability in generating fine scale data from coarse scale measurements of rainfall. In this study, microcanonical cascade model, which is based on the scaling properties of rainfall and consta...

2002
Tim Cunnyngham

This thesis investigates using the cascade multilevel inverter as an alternative to conventional pulse width modulated inverters for large hybrid-electric vehicle (HEV) drivetrain applications. Previous research considered constant and equal dc sources with invariant behavior; however, this research extends earlier work to include variant dc sources, which are typical of lead-acid batteries whe...

2015
Nouf Al-Shenaifi Rehab AlNefie Maha M. Al-Yahya Hend Suliman Al-Khalifa

In this paper we present the Arib system for Arabic spelling error detection and correction as part of the second Shared Task on Automatic Arabic Error Correction. Our system contains many components that address various types of spelling error and applies a combination of approaches including rule based, statistical based, and lexicon based in a cascade fashion. We also employed two core model...

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