نتایج جستجو برای: yield loss threshold

تعداد نتایج: 743381  

Journal: :acta medica iranica 0
m. shayani-nasab s. a. safavi naiianni m. r. fathol alolomi a. makaremi

the exposure to electromagnetic field emitted by mobile telephones is increasing rapidly worldwide that causes side effects, including thermal and non thermal side effects. ear proximity to electromagnetic source may lead to greater damage and side effects, including hearing loss. this study was performed to assess the chronic effect of exposure to electromagnetic field of mobile telephones on ...

Journal: :The Journal of chemical physics 2014
Onise Sharia Jeffrey Holzgrafe Nayoung Park Graeme Henkelman

The interaction of thermal Ar plasma particles with Si and W surfaces is modeled using classical molecular dynamics (MD) simulations. At plasma energies above the threshold for ablation, the ablation yield can be calculated directly from MD. For plasma energies below threshold, the ablation yield becomes exponentially low, and direct MD simulations are inefficient. Instead, we propose an integr...

2009
Masayuki Takigawa Hajime Akimoto Masaaki Takahashi Kazuhiko Kobayashi

To evaluate the impact of emission change in East Asia on the surface ozone concentration and crop yield loss especially for wheat and rice, we developed a one-way nested global–regional chemical transport model, and conducted 1–year calculations with emission inventories for 2000 and 2020. The model consisted of global and regional CTMs. The global CTM was based on the chemical atmospheric gen...

Introduction: Hearing loss is one of the most common occupational diseases. In most workplaces, workers are exposed to noise and solvents simultaneously, so the potential risk of hearing loss due to solvents may be attributed to noise.  In this study we aimed to assess the effect of exposure to mixed aromatic solvents on hearing in the absence of exposure to hazardous noise.   Materials and Met...

Journal: :Journal of nematology 2002
D G Kim H Ferris

To determine the economic threshold level, oriental melon (Cucumis melo L. cv. Geumssaragi-euncheon) grafted on Shintozoa (Cucurbita maxima x Cu. moschata) was planted in plots (2 x 3 m) under a plastic film in February with a range of initial population densities (Pi) of Meloidogyne arenaria. The relationships of early, late, and total yield to Pi measured in September and January were adequat...

Journal: :Proceedings of the New Zealand Weed and Pest Control Conference 1990

Journal: :مجله دانشگاه علوم پزشکی شهید صدوقی یزد 0
عباس میروکلی a mirvakili . dr.mirvakili@ ssu.ac.ir محمد حسین برادران فر mh baradaranfar علی حسنی a hasani رزیتا جعفری r jafari

introduction: conductive hearing loss due to chronic otitis media (com) can be treated by surgery. com, however, may be associated with functional damage to the inner ear. sensorineural hearing loss (snhl) due to com has been found to be significant by some authors, whereas it has been considered negligible by others. the present study aimed to answer the question does com cause snhl ? methods:...

We have investigated and developed a theoretical approach to explore stimulated Brillouin scattering (SBS) phenomena in single mode fiber. SBS happening threshold power condition has been studied in terms of fiber parameters and input pump power. To assess threshold power precisely, the pump depletion effect and fiber loss has been included by employing 1% criterion. The threshold exponential g...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی 1389

با پیشرفت تکنولوژی و کاهش ابعاد ترانزیستور، تلرانس پارامترهای ساخت مدارات الکترونیک افزایش یافته و باعث کاهش ضریب yield می شود. در طراحی مدارات الکترونیک، طراح عموما مقادیر نامی را برای دست یابی به عملکرد مطلوب استخراج می کند، در حالی که، در عمل یک ناحیه تلرانس، به دلیل فرآیند های تصادفی حین فرآیند های ساخت، وجود دارد که بایستی در طراحی لحاظ گردد. الگوریتم های بهینه سازی طراحی تلرانس، ناحیه تلر...

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