The aim of the study was to compare sperm chromatin structure of transgenic and non-transgenic rabbits. In addition, the effect of chromatin structure on semen fertility was determined. Twenty male rabbits transgenic (TG) for WAP bGH gene (Edison Biotechnology Institute Ohio University, USA) and nine non-transgenic (NTG) males were used. Both TG and NTG rabbits were 13-18 months old. Semen was ...

Background: The aim of this study was to examine the possible relationship between sperm DNA integrity and chromatin packaging evaluated by cytochemical assays, traditional sperm parameters and recurrent spontaneous abortion (RSA) of unknown origin. Materials and Methods: In this cohort study, 40 couples with a history of RSA and 40 couples with proven fertility were considered as case and cont...

In this research, graphene oxide (GO) nanoparticles were modified by second and fourth generations of poly(amidoamine) dendrimers in order to improve the particle dispersion quality in the epoxy matrix and therefore its barrier anti-corrosion performance. Confirmation on the GO surface modification by Polyamidoamine generation 2 (PAMAM2) and polyamidoamin generation 4 (PAMAM4) was carried o...

OBJECTIVE To evaluate cryodamage on human sperm motility, cryosurvival rate, and sperm chromatin assessed by acridine orange staining method (AO test) after a six-month freeze-thawing process using liquid nitrogen vapor. STUDY DESIGN Experimental study. MATERIAL AND METHOD Twenty normal semen samples were obtained from the male partner of infertile couples attending the infertility unit, Si...

We demonstrate how to design thin-film multilayer structures that separate multiple wavelength channels with a single stack by spatial dispersion, thus allowing compact manufacturable wavelength multiplexers and demultiplexers and possibly beam-steering or dispersion-control devices. We discuss four types of structure--periodic one-dimensional photonic crystal superprism structures, double-chir...

This paper reports comprehensive experimental results on a femtosecond code-division multiple-access (CDMA) communication system test bed operating over optical fiber in the 1.5 m communication band. Our test bed integrates together several novel subsystems, including low-loss fiber-pigtailed pulse shapers for encoding–decoding, use of dispersion equalizing fibers in dispersion compensated link...

The optimization of formulation is the next task to formulate an effective rapid dispersible tablet with ideal wetting, dispersion properties to achieve rapid release profile of finished product. In preliminary work, the initial formulation was established to enhance the solubility and rapid release of Tolfenamic acid, but the optimization of size of granules and quantity of disintegrants was n...