نتایج جستجو برای: emission factor
تعداد نتایج: 1013740 فیلتر نتایج به سال:
In this study, the morphology of the oxygen greenline dayglow emission is presented. The volume emission rate pro®les are obtained by using Solomon's glow model. The glow model is updated in terms of recent cross sections, reaction rate coecients and quantum yield of greenline emission. Throughout most of the thermosphere the modelled and observed emission rates are in reasonably good agreemen...
Measurements of the aerosol size distribution from 11 nm to 2.5 microns were made in Mexico City in March 2006, during the MILAGRO (Megacity Initiative: Local and Global Research Observations) field campaign. Observations at the urban supersite, referred to as T0, could often be characterized by morning conditions with high particle mass concentrations, low mixing heights, and highly correlated...
Carbon emission in developing countries has being on the increase in the last few years, from a 33 percent in 1990 to 40 percent in 1997, when the international climate change mitigation treaty of Kyoto Protocol was agreed on, to 55 percent of today’s total global carbon emission. Hence the difficult to manage global warming without the participation of developing nations take tougher actions t...
We consider one-loop five-point QCD amplitudes in next-to-multi-Regge kinematics, and evaluate the impact factor for emission of two gluons. This is last ingredient which necessary to gluon-jet at NNLO accuracy $\as$. It also first instance loop-level are evaluated requires apply a different reggeisation ansatz each colour-ordered amplitude.
Ammonia emissions from swine feeding operations depend on the housing type; animal size, age, and type; manure management, storage, and treatment; climatic variables; and manure utilization or land application techniques. Techniques or methods for estimating or quantifying NH3 flux from a source to the atmosphere include nitrogen mass balance, micrometeorology, flux chambers, models, and emissi...
در سال های اخیر، کاربرد مدل های هیدرولوژیکی توزیعی بر پایه فیزیکی افزایش یافته است. با این حال بسیاری از سوالات در خصوص واسنجی و صحت سنجی صحیح مدل های توزیعی و ارزیابی عدم قطعیت پارامترهای تخمینی، هنوز هم ناشناخته است. به خصوص برای مدل های پیچیده، تخمین پارامترها به طور صحیح، کاهش فضای پارامتری و استفاده از الگوریتم های موثر و کارآمد به منظور کاهش عدم قطعیت و تسهیل فرآیند واسنجی امری ضروریست. ه...
در این تحقیق به بررسی پارامترهای بیلان آب حوضه رودخانه آق چای در شمال استان آذربایجان غربی، با مساحت 1440.89 کیلومتر مربع پرداخته شده است. مدل سازی بارش-رواناب با گام زمانی روزانه و با استفاده از مدل نیمه توزیعی swat و بهینه سازی پارامترهای حوضه، بررسی عدم قطعیت مدل و پارامترها با برنامه swat-cup انجام گرفته است. کاربرد الگوریتم sufi-2 در بررسی عدم قطعیت نشان داد مقدار ضریب ناش برای دوره واسنج...
Defect radiation has been always considered as the most important loss for an emitter based on band gap emission. Here, we propose a novel approach which goes against this conventional wisdom. Based on the resonance effect between the surface plasmon of metal nanoparticles and defect emission, it is possible to convert the useless defect radiation to the useful excitonic emission with a giant e...
The focus of this project was to provide baseline PM10 emission factor data for almond sweeping operations as well as to move forward on quantification of a possible conservation management practice (CMP) for almond sweeping. In conjunction with the emission factor development work, continued quantification of sampler bias was conducted. This report provides an assessment of the progress and up...
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