sphingosine-1-phosphate (s1p) is a bioactive platelet-derived sphingolipid involved in regulation, proliferation, differentiation, hypertrophy and anti-apoptosis of cells and activation of satellite cells. the aim of the present study was to investigate s1p as a growth factor in response to resistance training in male wistar rats. 24 eight-week-old male wistar rats (190–250 gr.) were used in th...

Pb(Zr0.52Ti0.48)O3 (PZT) nanotubes with diameters of 80–100 nm and a wall thickness of 15–20 nm were prepared by sol–gel template technique and using multi-walled carbon nanotubes (MWCNT) as sacrificial templates. The coating process of MWCNT with PZT precursor sol and removal of the carbon nanotubes by an interrupt heat treatment were discussed and studied by Raman spectroscopy. Simultaneous t...

A series of 8 new complexes of titanium and zirconium with diamido ligands bearing an ethylene and propylene bridge between the two amido groups were synthesized and tested for ethylene polymerization. Titanium complexes bearing an ethylene bridge between the two amido groups showed higher activities than the derivatives with a propylene bridge. In the case of the zirconium complexes, the p...

Two different possible mechanisms of water gas shift reaction including formate and redox mechanisms on the Ag5 cluster were investigated using DFT computations. All the elementary steps involved in both mechanisms were considered. It was observed that dissociation of H2Oads and OHads, as well as formation of CO2(ads), required activation e...

Microinjections of neuropeptide Y (NPY) (1-36) and of the NPY Y1 agonist [Leu31,Pro34]NPY into the caudal dorsomedial part of the nucleus tractus solitarius (Sol) in the anaesthetized rat led to the development of dose-related vasodepressor and bradycardic responses. The threshold dose of the NPY Y2 agonist NPY(13-36) (50 fmol) significantly counteracted the vasodepressor actions of a close to ...

INTRODUCTION Sit-to-stand (SitTS) and stand-to-sit (StandTS) are very important functional tasks that become compromised in stroke patients. As in other voluntary movements, they require an adequate postural control (PC) involving the generation of anticipatory postural adjustments (APAs). In order to give clues for more efficient and directed rehabilitation programs, a deeper knowledge about A...

Walking is a motor task requiring coordination of many muscles. Previous biomechanical studies, based primarily on analyses of the net ankle moment during stance, have concluded different functional roles for the plantar flexors. We hypothesize that some of the disparities in interpretation arise because of the effects of the uniarticular and biarticular muscles that comprise the plantar flexor...

in this research chloroaiminium and copper phthalocyanine(clalpc and cupc)were purified twice, using entrained sublimitation techniques. ohmic contacts were made on the samples using the electrical properties of both (clalpc and cupc) were studied over a range of temperatures. the activation energies of these materials were measured using both forward and reverse current-voltage characteristic ...