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Unit for Human Reproduction, 1st Department of Obstetrics and Gynaecology, Aristotle University of Thessaloniki, Thessaloniki, Greece, Department of Reproductive Medicine and Gynaecology, University Medical Centre, Utrecht, Netherlands, Department of Gynecology and Obstetrics, Division of Gynaecological Endocrinology and Reproductive Medicine, University Clinic of Schleswig-Holstein, Campus Lue...
Plasma thyroxine (T4), triiodothyronine (T3) and iodide levels were measured from birth until 30 days of age in 17 Holstein x Friesian (HF), 7 Salers and 7 Charolais calves born at term. The response of plasma T4 and T3 levels to bovine thyrotropin (TSH) injection was also compared in two groups of 9 HF calves 3hrs and 21 days, respectively, after birth. In the HF calves, plasma T4 and T3 level...
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هسته های پرتوزای طبیعی در همه جا وجود دارند. از منابع پرتوزای طبیعی یکی پرتوهای کیهانی و دیگری هسته های پرتوزای با منشأ زمینی می باشند. ویژه هسته های با منشأ زمینی آن هایی هستند که در پوسته ی زمین یافت می شوند و از زمان پیدایش زمین وجود داشته اند. تنها آن ویژه هسته هایی که دارای نیمه عمر قابل مقایسه با عمر زمین می باشند قابل اندازه گیری هستند. از جمله ی آن ها می توان به عناصر k40 ، ra226 و th23...
یکی از چالش های جهان امروز بحران کم آبی است و برای حل این مشکل کشورهای مختلف باید منابع آبی خود را به بهترین شکل مدیریت کنند. رشد سریع جمعیت و نیاز به تولید بیشتر سبب شده است که بخش کشاورزی نسبت به سایر بخش های مصرف کننده ی آب تقاضای بیشتری برای مصرف داشته باشد (fallsoleiman et al., 2011). ایران در یک منطقه ی خشک و نیمه خشک جهان واقع شده و کمبود آب مهم ترین مشکل توسعه ی کشاورزی محسوب می شود. به...
In recent years, a perspective on adolescent risk-taking derived from developmental neuroscience has become increasingly popular. This perspective, referred to as the “dual systems model” (Somerville et al., 2010; Steinberg, 2010) or sometimes the “maturational imbalance theory” (Casey et al., 2011), posits that increased risk-taking during adolescence is due to a combination of heightened rewa...
plexity. This conclusion is conceptually similar to our own, and it little alters the broader impacts of our published findings; still, the general relevance of the issues warrants a response. In their reanalysis, Gutierrez-Ibanez et al. [2016] perform a ‘residual analysis’, which regresses body weight on brain weight with phylogenetic generalized least squares (PGLS) to obtain size-corrected r...
ENETIC recombination is a natural source of variation. Experiments with chromosomes of Drosophila pseudoobscura, D. prosaltans, D. persimilis, D. willistoni, and D. melanogaster with quasinormal viability show increases in the variation of viability values for homozygotes after recombination between strains ( SPASSKY, SPASSKY, LEVENE, and DOBZHANSKY 1958; DOBZHANSKY, LEVENE, SPASSKY, and SPASSK...
The purpose of this study is to explain the relationship between variables of organizational climate, organizational commitment, job involvement and organizational citizenship behavior. The study population included 1276 employees of the gas company in Khuzestan province. To this aim 296 subjects were selected according to the Cochran formula. To collect data, questionnaires of OCB of Podsakoff...
In both Australia and Swaziland large areas of sugarcane rely on irrigation to produce a viable crop or to improve rainfed productivity. Matching water supply to crop demand is essential for productivity and sustainability in any irrigation scheme. Historically Class-A pan evaporation was used as a basis for determining sugarcane water demand or evapotranspiration (ETc). ETc is now frequently o...
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