Basic Science Sector

The acceleration of ultra high energy cosmic rays is conjectured to occur through various interactions with the electromagnetic fields in different astrophysical objects, like magnetic matter clumps, besides the well-known shock and stochastic Fermi mechanisms. It is apparent that the latter are not depending on the particle's charge, quantitatively. Based on this model, a considerable portion of the dynamics, that derives a charged particle parallel to a magnetic field and under the influence of a force, is assumed to be composed of an acceleration by a non- magnetic force and a gyromotion along direction, plus drifts in the direction of The model and its formalism are introduced. Various examples for drift motions and accelerating forces are suggested. The formalism is given in a non-relativistic version. Obviously, the translation into the relativistic version is standard. In a forthcoming work, a quantitative estimation of the energy gained by charged cosmic rays in various astrophysical objects will be evaluated.

u2 values are found to first increase with pT, reaching a maximum aroundpT=3GeV/c, and then to gradually decrease to almost zero, with the decline persisting up to at least pT=40GeV/c over the full centrality range measured.

In the present study, the acid-baseequilibria of N,O-carboxymethy chitosan abbreviated as (NOCC), is investigated. The complex formation equilibria with the metal ions Cu(II), Ni(II), Co(II), Mn(II), and Zn(II) are investigated potentiometrically. The stability constant values of the binary and ternary complexes formed in solution were determined and the binding centers of the ligands were assigned. The relationships between the properties of the studied central metal ions as ionic radius, electronegativity, atomic number, and ionization potential, and the stability constants of the formed complexes were investigated in an effort to give information about the nature of chemical bonding in complexes and make possible the calculation of unknown stability constants. Cu(II), Ni(II), and U(VI) complexes with NOCC are isolated as solid complexes and characterized by conventional chemical and physical methods. The structures of the isolated solid complexes are proposed on the basis of the spectral and magnetic studies. The ternary copper(II) complexes involving NOCC and various biologically relevant ligands containing different functional groups, as amino acids and DNA constituents

Aryl-2-sulfanylpropenoic acids reacted with acetohydrazonyl chlorides in refluxing absolute ethanol in the presence of equimolar amount of triethylamine forming (Z)-6- arylmethylidene- 1,3,4-thiadiazin-5-one derivatives. X-Ray study on the crystal of one of the obtained products was carried out.

A novel potyvirus we call Gazar virus Y (GVY) A novel potyvirus we call Gazar virus Y (GVY) was isolated from diseased carrot plants in Egypt. It produced symptoms similar to

Aryl-2-sulfanylpropenoic acids reacted with acetohydrazonyl chlorides in refluxing absolute ethanol in the presence of equimolar amount of triethylamine forming (Z)-6- arylmethylidene- 1,3,4-thiadiazin-5-one derivatives. X-Ray study on the crystal of one of the obtained products was carried out.

Objective: To evaluate local tumor control and survival data after transarterial chemoembolization (TACE) with different drug combinations in the palliative third-line treatment of patients with ovarian cancer liver metastases.Methods: Sixty-five patients (mean age: 51.5 year) with unresectable hematogenous hepatic metastases of ovarian cancer who did not respond to systemic chemotherapy were repeatedly treated with TACE in 4-week intervals. The local chemotherapy protocol consisted of Mitomycin (group 1) (n=14; 21.5%),

The transverse energy (ET) in Pb-Pb collisions at 2.76 TeV nucleon -nucleon center- of-mass energy (sNN) has been measured over a broad range of pseudorapidity ( ) and collision centrality by using the CMS detector at the LHC. The transverse energy density per unit pseudorapidity (dET/d) increases faster with collision energy than the charged particle multiplicity. This implies that the mean energy per particle is increasing with collision energy. At all pseudorapidities, the transverse energy per participating nucleon increases with the centrality of the collision. The ratio of transverse energy per unit pseudorapidity in peripheral to central collisions varies significantly as the pseudorapidity increases from =0 to | |=5.0. For the 5% most central collisions, the energy density per unit volume is estimated to be about 14GeV/fm3 at a time of 1fm/c after the collision. This is about 100 times larger than normal nuclear matter density and a factor of 2.6 times higher than the energy density reported at sNN=200GeV at the Relativistic Heavy Ion Collider.