A FIELD TRIAL COMPARISON OF BOVINE SEMEN PACKED IN STRAWS

Detection of Ureaplasma diversum in bovine semen straws for artificial insemination.

assessment of deep word knowledge in elementary and advanced iranian efl learners: a comparison of selective and productive wat tasks

testing plays a vital role in any language teaching program. it allows teachers and stakeholders, including program administrators, parents, admissions officers and prospective employers to be assured that the learners are progressing according to an accepted standard (douglas, 2010). the problems currently facing language testers have both practical and theoretical implications but the first i...

a comparison of linguistic and pragmatic knowledge: a case of iranian learners of english

در این تحقیق دانش زبانشناسی و کاربردشناسی زبان آموزان ایرانی در سطح بالای متوسط مقایسه شد. 50 دانش آموز با سابقه آموزشی مشابه از شش آموزشگاه زبان مختلف در دو آزمون دانش زبانشناسی و آزمون دانش گفتار شناسی زبان انگلیسی شرکت کردند که سوالات هر دو تست توسط محقق تهیه شده بود. همچنین در این تحقیق کارایی کتابهای آموزشی زبان در فراهم آوردن درون داد کافی برای زبان آموزان ایرانی به عنوان هدف جانبی تحقیق ...

Effect of thawing rate and post-thaw temperature on motility and acrosomal-maintenance in bovine semen frozen in plastic straws.

One ejaculate from each of 13 Holstein bulls was diluted in egg yolk-tris-gly~erol, packaged in .25 ml Continental straws and frozen in liquid nitrogen vapor. Two thawing rates, 35 C for 1 min and 5 C for 3 min, were compared after immediate post-thaw exposure to either 1 C, 20 C or 37 C for either 1 or 3 minutes. Straws were plunged into water baths to achieve these thaw and post-thaw treatmen...

comparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.

heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...