the effects of temperature, time and the strategy of prepolymerization were studied on the morphology of polypropylene particles. propylene polymerization was carried out in slurry phase using 4th generation of ziegler-natta catalyst, cyclohexylmethyl dimethoxysilane as external electron donor, and triethyl aluminum as co-catalyst. prepolymerizations were carried out based on two strategies: is...

Along with a few elastic constants, recently created pseudopotential is employed to examine the vibrational properties of some simple alkali metals, i.e. Li, Na, K, Rb and Cs. The phonon dispersion curves (PDC) are computed in text. (ωL ωT), longitudinal sound velocity (vl), transverse (vt), isothermal bulk modulus (B), rigidity (G), Young’s (Y ), Debye temperature (θD) liquid metals. second or...

Hot ionized gas is important in the baryon cycle of galaxies and contributes majority their ``missing baryons''. Until now, most semi-analytic models galaxy formation have paid little attention to hot gaseous haloes X-ray emission. In this paper, we adopt one-dimensional model from Sharma et al. instead isothermal sphere describe radial distribution L-Galaxies model. The halo can be divided int...

conclusions the analytical sensitivity of lamp and pcr methods, using the designed primers, was 8 times more than any other reported methods. the designed methods are specific and sensitive for detection of h. pylori in different clinical and environmental samples. results the detection limits of the lamp and pcr assay were similar and were 10 fg of pure dna of h. pylori, which is equal to 6 co...

We performed simulations of self-gravitating hydro-dynamic turbulence to model the formation of filaments, clumps and cores in molecular clouds. We find that when the mass on the initial computational grid is comparable to the Jeans mass, turbulent pressure is able to prevent gravitational collapse. When the turbulence has damped away sufficiently, gravitational collapse can occur, and the resu...

Thermodynamic consistency test of isothermal vapor-liquid equilibrium (VLE) data of various binary systems containing Carbon dioxide (CO2)/Room temperature ionic liquids (RTILs) have been investigated in wide ranges of pressures in each isotherm precisely. In this paper Generic van der Waals (GvdW) equation of state (EoS) coupled with modified van der Waals Berthelot mixing rule has ...

T. Hanawa and T. Matsumoto Stability of Dynamically Collapsing Gas Sphere 1 document page1 Stability of Dynamically Collapsing Gas Sphere Tomoyuki Hanawa Department of Astrophysics, Nagoya University, Chikusa-ku, Nagoya 464-8602 E-mail(TH): [email protected] and Tomoaki Matsumoto Faculty of Liberal Arts, Hosei University, Fujimi, Chiyoda-ku, Tokyo 102-8160 E-mail(TH): [email protected]...