Background: Semen quality is affected by environmental and genetically factors. The present study aimed to determine the association of varicocele surgery and males' infertility based on semen analysis. Materials and Methods: In this case-control study, 188 men with infertility disorder in Ilam province were enrolled between May 2008 and May 2009. Semen analysis was done using the Weili Dy...

Sperm head morphology has been identified as a characteristic that can be used to predict a male's semen quality. In the present study, we have developed an automated sperm head morphology analysis (ASMA) plug-in for open-source ImageJ software (http://rsbweb.nih.gov/ij/). We describe the plug-in's functionality, and confirm its validity for sperm head morphology analysis using fish sperm. Sper...

The aim of the present study was to compare assessments of sperm concentration and sperm motility analysed by conventional semen analysis with those obtained by computer-assisted semen analysis (CASA) (Copenhagen Rigshospitalet Image House Sperm Motility Analysis System (CRISMAS) 4.6 software) using semen samples from 166 young Danish men. The CRISMAS software identifies sperm concentration and...

This paper introduces an empirical strategy to estimate dynamic treatment effects in randomized trials that provide treatment in multiple stages and in which various noncompliance problems arise such as attrition and selective transitions between treatment and control groups. Our approach is applied to the highly influential four year randomized class size study, Project STAR. We find benefits ...

objective: this study aims to evaluate the protective effects of american ginseng administered by gastric intubation on sperm vital quality in adult male rats treated with cyclophosphamide (cp). materials and methods: in this experimental study, 28 adult male wistar rats were assigned to four groups, seven rats in each. the animals allocated to control, cp treated, ginseng treated and cp-ginsen...

new advances in mass spectrometry-based proteomics technology are having amajor impact on our understanding of how human spermatozoa acquire their capacity for fertilization. a complete analysis of the proteins found in the human spermatozoa is essential for understanding the events leading up to, and including, fertilization and early embryo development. in this short review, we have collected...

This paper examines the semantics of sentence-final stress in Mandarin Chinese and gives a uniform account of the distribution and interpretation of emphatic stress. A phonetic production study shows that the use of sentence-final stress by Mandarin speakers is sensitive to the evidentiality of the context. A semantic rating study shows that listeners judge sentences with evidenced contexts as ...