نتایج جستجو برای: cascade hybrid
تعداد نتایج: 234900 فیلتر نتایج به سال:
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 ...
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 ...
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...
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...
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...
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...
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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