نتایج جستجو برای: exposed to nitrogen vapor and finally moved into liquid nitrogen containers after freezing
تعداد نتایج: 18601462 فیلتر نتایج به سال:
Background Although several studies confirmed positive effects of fish oil on semen quality, the antioxidant status in omega-3 supplemented diets of several studies is a fuzzy point. The aim of this study was to investigate the effect of dietary fish oil and (or) vitamin E supplementation on cryopreserved sperm in Mehraban rams. MaterialsAndMethods Sixteen fertile rams were randomly allotted to...
abstract due to the growing importance and influence of the self of the teacher in the field of educational and cognitive psychology, the current study intended to investigate the relationship between three teacher qualities and characteristics, i.e. teacher self efficacy, self regulation, and success as perceived by their learners. the study aimed at finding whether teacher self efficacy an...
for any educational program to be successful, many factors work hand in hand. based on pervious efl studies, teachers and learners are the keys to gain achievement. granted the fact that explicit and implicit practice plays a key role in education, knowledge of it can help teachers facilitate students’ vocabulary learning. this study investigated to determine the contribution of explicit and i...
this dissertation has six chapter and tree appendices. chapter 1 introduces the thesis proposal including description of problem, key questions, hypothesis, backgrounds and review of literature, research objectives, methodology and theoretical concepts (key terms) taken the literature and facilitate an understanding of national security, national interest and turkish- israeli relations concepts...
OBJECTIVE To study the resistance of human spermatozoa to cryoinjury in repeated cycles of thaw-refreezing by using the fast liquid nitrogen vapor method. MATERIALS AND METHODS Semen specimens were obtained from sixteen normal and oligozoospermic individuals who required disposal at the sperm bank. Five of them had testicular cancer. Specimens were thawed and an aliquot was removed for analys...
Accepted: 21/07/2015 Abstract A total 196 ejaculates from 8 adult Sirohi bucks were utilized to find out the freezability of buck semen at different levels of two cryoprotectants. The ejaculates were extended to maintain sperms concentration approximately 100 million per dose (0.25 ml) containing TrisCitric acidFructose (TCF) with different concentrations of glycerol and DMSO viz. 4%, 6% and 8%...
OBJECTIVE To evaluate the effectiveness of liquid nitrogen (LN(2)) vapor (indirect contact method) for the storage of human semen. DESIGN Experimental study. SETTING University hospital-based fertility center. PATIENT(S) We evaluated 150 patients with normal sperm parameters. INTERVENTION(S) Human semen (N = 120) was mixed with Semen Freezing Medium, divided into two groups, frozen, and...
abstract previous researches have shown success of growth hormones usage on flower production increase, pod and prevention of abscission of them in some of the pulses. two tests were done, in order to find out the effects of growth hormones to on flower production increase, pod and chick pea yield composites in farmer conditions (2010-11) and green house conditions as factorial on the proje...
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