Background: Vitamin E is believed to be the primary component of the antioxidant system in spermatozoa. There is a relationship between activity of these antioxidant and function of sperm. Vitamins E and C which are belong to non-enzymatic antioxidant are used as a supplemented drug to improve sperm quality and male fertility. The present study was carried out to investigate the positive effect...

The degree of curvature of vestibular and oral tooth surfaces is determined by the shape sequence from the tooth crown to the epithelial attachment and the alveolar bone, and directly influences the health of gingiva and the entire tooth support system. The goal of this research was to determine vestibulo-oral planes of upper and lower permanent premolars and molars and the thickness of the ass...

Residual gas saturation is one of the most important parameter in determining recovery factor of water-drive gas reservoir. Visual observation of processes occurring at the pore level in micromodels can give an insight to fluid displacements at the larger scale and also help the interpretation of production performance at reservoir scale. In this study experimental tests in a glass micromod...

The diminutive middle ear ossicles (malleus, incus, stapes) housed in the tympanic cavity of the temporal bone play an important role in audition. The few known ossicles of Neandertals are distinctly different from those of anatomically modern humans (AMHs), despite the close relationship between both human species. Although not mutually exclusive, these differences may affect hearing capacity ...

Stiefel KM, Sejnowski TJ. Mapping functions onto neuronal morphology. J Neurophysiol 98: 513–526, 2007; doi:10.1152/ jn.00865.2007. Neurons have a wide range of dendritic morphologies the functions of which are largely unknown. We used an optimization procedure to find neuronal morphological structures for two computational tasks: first, neuronal morphologies were selected for linearly summing ...

background: the langerhans cells (lcs) are dendritic cells (dcs) which belong to the group of antigen presenting cells (apcs). their function is to recognize the antigen, capture it, and present it to the t lymphocytes; thus initiating an early immune response. the antigen presenting functional lcs may play an important part in initiation and development of gingivitis. the aim of this study was...

Skou, a language of the central north coast of New Guinea, presents a rare example of multiple exponence of features in the agreement paradigms for subject. While this is a challenge for theories of morphology, because each morphological realization presents exactly the same featural information in Skou, there is a simple historical explanation for the modern complexities, involving cycles of c...

An aggregate is a group of primary particles that cohere to each other more strongly than to other surrounding soil particles. Most adjacent particles adhere to some degree. Therefore, disintegration of the soil mass into aggregates requires imposition of a disrupting force. Stability of aggregates is a function of whether the cohesive forces between particles withstand the applied disruptive f...