n.abdallah

أ. د. نبيل نور الدين عبداللاه

استاذ - رئيس جامعة سوهاج السابق

كلية العلوم

العنوان: سوهاج -

8

إعجاب
2003 | الكلمات المفتاحية azimuthal angle,
Azimuthal correlation of secondary particles from 24 Mg-nuclei collisions with emulsion at 4.5 A GeV/c
A systematic study and statistically significant results of the different types of correlations, for angles, rapidity and rapidity intervals, between various charged secondary particles and projectile fragments produced in the inelastic interactions of24Mg with emulsion at 4.5A GeV/c have been investigated. All types of particles are found to be emitted asymmetrically in the azimuthal plane. This asymmetry increases with decreasing ... إقراء المزيد

2003 | الكلمات المفتاحية multiplicity, pseudorapidity,
Pseudorapidity distribution of shower particles in relativistic nucleus nucleus collisions
The multiplicity and pseudorapidity distributions of shower particles produced in interactions of the 24Mg at 4.5A GeV/_c_ was studied in nuclear emulsion. The results indicated that the multiplicity distributions of shower particles produced in the collisions depend on the projectile mass. The pseudorapidity distributions are approximately Gaussian in shape. Also, the peaks of the pseudorapidity distributions of shower particles tend ... إقراء المزيد

2003 | الكلمات المفتاحية azimuthal angle,
Angular distributions of target black fragments in nucleus–nucleus collisions at high energy
The experimental results of space, azimuthal, and projected angular distributions of target black fragments produced in silicon-emulsion collisions at 4.5A GeV/c (the Dubna energy) are reported. A multi-source ideal gas model is suggested to describe the experimental angular distributions. The Monte Carlo calculated results are in agreement with the experimental data. إقراء المزيد

2003 | الكلمات المفتاحية the cylinder model, pseudorapidity,
Kaon pseudorapidity distribution in pA and AA collisions at AGS and SPS energies
We study systematically the kaon pseudorapidity distribution in proton-nucleus and nucleus-nucleus collisions at AGS and SPS energies within the cylinder model. The calculated results are compared and shown to be in agreement with the available experimental data. إقراء المزيد

2003 | الكلمات المفتاحية participant-spectator model,
Multiplicity and Transverse Energy Distributions in Au-Au and Pb-Pb Collisions at High Energy
The multiplicity and transverse energy distributions in high-energy nucleus-nucleus collisions are described by a geometrical model, namely the participant-spectator model. The calculated results are compared and found to be in agreement with the experimental data on Au-Au collisions at the RHIC energy and Pb-Pb collisions at the SPS energy. إقراء المزيد

2002 | الكلمات المفتاحية The correlations, the multiplicity,
Study of forward–backward shower particle and slow proton production from the interactions of 7 Li with emulsion nuclei at 3 A GeV/c
The correlations between the multiplicities of secondary charged particles emitted in collisions of 3 A GeV/c7Li with emulsion have been studied. The dependence of the correlation strength on the mass number of the projectile has been analyzed. Moreover, the dependence of the average multiplicities of shower particle emitted in the forward and backward hemispheres on the number of target fragments ... إقراء المزيد

2002 | الكلمات المفتاحية Hypertensive,
Blood pressure lowering effect of an olive leaf extract (Olea europaea) in L-NAME induced hypertension in rats
A specially prepared olive leaf extract (EFLA 943) has been tested for its blood pressure lowering activity in rats rendered hypertensive by daily oral doses of L-NAME (NG-nitro-L-arginine methyl ester, 50 mg/kg) for at least 4 weeks. Oral administration of the extract at different dose levels at the same time as L-NAME for a period of 8 weeks showed a ... إقراء المزيد

2002 | الكلمات المفتاحية Fritiof Model,
Systematic comparison of the experimental data with the Fritiof model in nucleus–nucleus interactions with light and heavy target nuclei in nuclear emulsion at 4.5 A GeV/c
The characteristics of the interactions of 4.5A GeV/c28Si nuclei with emulsion have been investigated. The method of separating interactions into those with hydrogen, light and heavy target nuclei has been discussed. The multiplicity distribution, average multiplicities, multiplicity correlation and the angular distributions of the secondary particles emitted in 28Si-emulsion are calculated according to the Modified Fritiof Model and compared with ... إقراء المزيد

2001 | الكلمات المفتاحية Emulsion, multiplicity distributions,
Multiplicity of secondary particles and fragmentation in nuclear interactions of22Ne and32S nuclei with emulsion at (4.1–4.5)A GeV/c
The interactions of 4.1_A_GeV/_c_22Ne and 4.5_A_GeV/_c_32S nuclei with emulsion have been studied and the dependence of the average multiplicities of the emitted secondary charged particles and the interacting projectile nucleons on the impact parameters have been investigated. The behavior of the Koba-Neilsen-Olesen (KNO) scaling formula of the multiplicity distributions produced due to the interactions of22Ne and32S at the energies mentioned ... إقراء المزيد

2001 | الكلمات المفتاحية momentum, projectile fragment,
Structures and angular distributions of slow and relativistic charged particles produced in {sup 7} Li-emulsion interactions at 3A GeV/c
The experimental results on the multiplicity distribution of the different particles produced from the interactions of {sup 7} Li with emulsion nuclei at 3A GeV/c are reported. A comparison with data on collisions induced by nuclei at nearly same momentum per nucleon is presented in order to reveal the dependence on the projectile mass. The internal structure of {sup 7} ... إقراء المزيد