The aim of the present study was to determine seasonal variations in semen characteristics, testicular size, and plasma testosterone concentration in Iranian Khalkhali goats. An artificial vagina was used to collect semen from 10 bucks (2–4 years of age), from November 2013 to October 2014. Testicular circumference was higher (P<0.05) from September to October. Ejaculate volume, sperm ...

We report a systematic comparison of the steric properties of different stereoselective olefin polymerization catalysts using the percentage of buried volume, %V(Bur), as a molecular descriptor. For the first time, isoselective and syndioselective group 4 metallocenes are compared with group 4 isoselective phenoxy-amine and group 4 syndioselective phenoxy-imine catalysts using the same molecula...

Many of the effects of estrogens on the uterus are mediated by ERa, the predominant ER in the mature organ. Because of the poor reproductive capacity of ERb knockout (BERKO) female mice (small litter size, multiple-resorbed fetuses), the role of uterine ERb was explored. In the immature uterus, ERa and ERb are expressed at comparable levels in the epithelium and stroma, and 17b-estradiol (E2) t...

Development of epithelial precancer and cancer leads to well-documented molecular and structural changes in the epithelium. Recently, it has been recognized that stromal biology is also altered significantly with preinvasive disease. We used the finite-difference time-domain method, a popular technique in computational electromagnetics, to model light scattering from heterogeneous collagen fibe...

growth of the prostate gland, also development of benign prostatic hyperplasia (BPH) is an androgen-dependent functions. Testosterone plays a major role in the prostate gland. Rat prostate gland is one of the most widely used models of animals in investigation. The rat prostate gland consisted of five lobes; the ventral, anterior, dorsal, lateral type 1 and latteral type 2. The goal of present ...

The strength of any material is dependent on the grain size and percentage of volume fraction recrystallization. In this Paper, a new approach for controlling microstructure development during hot working process by percentage of volume fraction recrystallization is proposed. Here two different methods are employed. One of the approaches is based on the Optimal Control theory and involves the d...

Abstract Background Herein, we investigate the relationship between pancreatic stem cell markers (PCSC markers), CD44, and epithelial-specific antigen (ESA), tumor stroma, impact on recurrence outcomes in ductal adenocarcinoma (PDAC) patients. Methods PDAC patients who underwent surgical resection 01/2012–06/2014 were identified. CD44 ESA expression was assessed by immunohistochemistry. Stroma ...