Thymidine is a specific precursor of deoxyribonucleic acid (DNA) and is utilized for chromosomal replication by the nuclei of cells when they double their DNA content in interphase before cell division (Reichard and Estborn, 1951; Friedkin, Tilson, and Roberts, 1956; Gall and Johnson, 1960; Mirsky and Osawa, 1961). Autoradiography after the administration of thymidine labelled with tritium (3H-...

A novel extreme thermophilic and piezophilic chemoorganoheterotrophic archaeon, strain EXT12c T , was isolated from a hydrothermal chimney sample collected at depth of 2496 m the East Pacific Rise 9° N. Cells were strictly anaerobic, motile cocci. The grew NaCl concentrations ranging 1 to 5 % (w/v; optimum, 2.0%), pH 6.0 7.5 (optimum, 6.5–7.0), temperatures between 60 95 °C 80–85 °C), pressures...

BACKGROUND Use of cellular phones emitting radiofrequency electromagnetic field (RF-EMF) has been increased exponentially and become a part of everyday life. This study aimed to investigate the effects of in vitro RF-EMF exposure emitted from cellular phones on sperm motility index, sperm DNA fragmentation and seminal clusterin (CLU) gene expression. MATERIALS AND METHODS In this prospective ...

Optic ataxia is considered to be a specific visuo-manual guidance deficit, which combines pointing errors due to the use of the contralesional hand ("hand effect") and to the presentation of the visual target in the contralesional field ("field effect"). The nature of the hand effect has not been identified. The field effect is acknowledged as an impaired spatial integration of visual target lo...

The bulk of personality research has been built from self-report measures of personality. However, collecting personality ratings from other-raters, such as family, friends, and even strangers, is a dramatically underutilized method that allows better explanation and prediction of personality's role in many domains of psychology. Drawing hypotheses from D. C. Funder's (1995) realistic accuracy ...

Recent research in security shows a real need for contextual information in building highly adaptive security systems. The need for such security for web services is fast becoming imperative. In this paper, we review the main contributions in this domain. Based, on this study we present a glimpse at the CoDiS project; a generic layer for the rapid prototyping of context-based security systems, ...

Butachlor (N-(butoxymethyl)-2-chloro-N-2, 6-diethylacetanillide) is widely used chloroacetanilide herbicide in Asian region, especially in the north of Iran. Several studies have been reported on toxicity of butachlor, but little information is accessible on DNA damaging potential. Thus, the present study was undertaken to investigate of DNA damage by butachlor in Cyprinuscarpio(Pisces: Cyprini...

In this study random amplified polymorphic DNA (RAPD) markers were used to infer the genetic profile of the black francolin (Francolinus francolinus, Galliformes) (N = 23) collected in five Pakistani areas (Alipur, Bait Suvai, Chakwal, Haroonabad and Rakni). A total of 269 different RAPD bands were obtained using fifteen primers. Estimates of the percentage of overall polymorphism (87.79%), Sha...

Recent studies have identified biomarkers of chronological age based on DNA methylation levels. Since active smoking contributes to a wide spectrum of aging-related diseases in adults, this study intended to examine whether active smoking exposure could accelerate the DNA methylation age in forms of age acceleration (AA, residuals of the DNA methylation age estimate regressed on chronological a...

Linear thermodynamics transportation theory is employed to study filtration of rodlike DNA molecules. Using the repeated nanoarray consisting of alternate deep and shallow regions, it is demonstrated that the complex partitioning of rodlike DNA molecules of different lengths can be described by traditional transport theory with the configurational entropy properly quantified. Unlike most studie...