نتایج جستجو برای: n concentration 438
تعداد نتایج: 1311920 فیلتر نتایج به سال:
The dc current gain dependence of InGaP/GaAs heterojunction bipolar transistors (HBTs) on subcollector and etch-stop doping is examined. Samples of InGaP/GaAs HBTs having various combinations of subcollector doping and etch-stop doping are grown, and large area (60 m 60 ( ) HBTs are then fabricated for dc characterization. It is found that the dc current gain has a strong dependence on the dopi...
Wit o t p ve w e reso an g e h p o ress p er u io t t h M len iu e lo m t al , an su t in le ev p e t a e o o ic, so n en iro t d en n , ill e j p ized Without improved water resources management, the progress towards poverty reduction targets, the Millennium Development Goals, and sustainable development in all its economic, social and environmental dimensions, will be jeopardized. Adaptation ...
Allogeneic hematopoietic stem cell transplantation (SCT) is the only curative option for patients with primary myelofibrosis (PMF), but information on its net advantage over conventional therapies is lacking. Using ad hoc statistical analysis, we determined outcomes in 438 patients <65 years old at diagnosis who received allogenic SCT (n = 190) or conventional therapies (n = 248). Among patient...
nowadays, air pollution is a global problem that has had significant growth by technology development, population growth andindustrial development. industrial development brought natural resources deterioration, more manufacturing products, and more environmental pollutants. if pollutant won’t be controlled, human-being and wildlife will face the critical risks. significant release and critical...
This is the second part of a two week experiment in image processing. In the first week , we covered the fundamentals of digital monochrome images, intensity histograms, pointwise transformations, gamma correction, and image enhancement based on filtering. During this week, we will cover some fundamental concepts of color images. This will include a brief description on how humans perceive colo...
It has been reported that selective serotonin reuptake inhibitors (SSRIs) possess some cardiac effects. In the present study we have investigated the effect of paroxetine (PX), a potent SSRI agent, on spontaneously as well as ouabain-induced arrhythmia beating isolated guinea–pig atria. The Guinea-pig heart was rapidly removed; the auricles were dissected out in oxygenated modified Krebs soluti...
To determine the nitrate pollution (water, soil, and tubers) in small (< 0.5 ha), medium (0.5- 1 ha) and large (> 1 ha) size of potato fields, this study was conducted in Fereidan region of Isfahan province during growing season of 2014-2015. For this purpose, the amounts of inputs and the tuber yield were recorded in each farm. Also, average nitrate-N concentration in irrigation water, soil an...
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