377 research outputs found
Modifications on nucleon parameters at finite temperature
No full textAzizi, Kazem (Dogus Author)Taking into account the additional operators coming up at finite temperature, we investigate the mass and residue of the nucleon in the framework of thermal QCD sum rules. We observe that the mass and residue of the nucleon are initially insusceptible to the increase of temperature, however, after a certain temperature, they start to fall with increasing the temperature
Decuplet baryons in a hot medium
Get PDFAzizi, Kazem (Dogus Author) -- Bozkır, G. (Dogus Author)The thermal properties of the light decuplet baryons are investigated in the framework of the thermal QCD sum rules. In particular, the behavior of the mass and residue of the Delta, Sigma*, Xi*, and Omega baryons with respect to temperature are analyzed taking into account the additional operators appearing in the Wilson expansion at finite temperature. It is found that the mass and residue of these particles remain overall unaffected up to T similar or equal to 150 MeV but, beyond this point, they start to diminish considerably
Magnetic dipole moment of Z(b)(10610) in light-cone QCD
Get PDFAzizi, Kazem (Dogus Author) -- Özdem, Ulaş (Dogus Author)The magnetic dipole moment of the exotic Z(b)(10610) state is calculated within the light cone QCD sum rule method using the diquark-antidiquark and molecule interpolating currents. The magnetic dipole moment is obtained as mu(Zb) = 1.73 +/- 0.63 mu(N) in diquark-antidiquark picture and mu(Zb) = 1.59 +/- 0.58 mu(N) in the molecular case. The obtained results in both pictures together with the results of other theoretical studies on the spectroscopic parameters of the Zb(10610) state may be useful in determination of the nature and quark organization of this state
Effects of repeated hydraulic loads on microstructure and hydraulic behaviour of a compacted clayey silt
Get PDFSoils used in earth constructions are mostly unsaturated, and they undergo frequent drying-wetting cycles (repeated hydraulic loads) due to changes in climatic conditions or variations of the ground water level, particularly at shallow depths. After compaction, changes in water content can significantly influence the hydromechanical response of the construction material, which therefore has to be assessed for repeated hydraulic loads. This research investigates the effect of such loads on the microstructure and hydraulic behaviour of a silty soil, typically used in the construction of embankments and dykes, with the aim of providing a better understanding of the consequences of drying-wetting cycles on the response of the material over time. Experimental tests were performed to study the impact of drying-wetting cycles on the water retention, hydraulic conductivity and fabric of compacted specimens. Fabric changes are documented to take place even without significant volumetric strains, promoting an irreversible increase in the hydraulic conductivity and a reduction in the capacity to retain water compared to the as-compacted soil. The fabric changes are interpreted and quantified by means of a hydromechanical model, which accounts for the evolving pore size distribution at different structural levels. The proposed model reproduces quite well the microstructural observations, together with the evolution of the water retention behaviour and of the hydraulic conductivit
Thermal behavior of the mass and residue of hyperons
No full textAzizi, Kazem (Dogus Author) -- Kaya, Gülşah (Dogus Author)We investigate the mass and residue of Sigma, Lambda and Xi hyperons at finite temperature in the framework of thermal QCD sum rules. In our calculation, we take into account the additional operators coming up at finite temperature. We find the temperature-dependent continuum threshold for each hyperon using the obtained sum rules for their mass and residue. The numerical results demonstrate that the mass and residue of the particles under consideration remain stable up to a certain temperature, after which they decrease by increasing the temperature
Program Karnival Sarawakku Membaca Pustaka Negeri Sarawak Sibu bersama komuniti Kg. Jemoreng / Nur Nadia Qausar Juhari and Arif Azizi Che Harun
No full textUiTM Cawangan Sarawak Kampus Mukah dengan berbesar hati menerima jemputan daripada Pustaka Negeri Sibu sebagai peserta program komuniti pada 28 September 2024 di perkarangan Perpustakaan Desa Kampung Jemoreng, Daro. Program ini telah dirasmikan oleh YB Dato’ Murshid Diraja Dr Juanda Bin Jaya, Ahli Dewan Undangan Negeri Sarawak N44 Jemoreng dalam pengisian slot bacaan bersama pemimpin. Program yang gah ini bermula pada jam 8.00 pagi sehingga 4.30 petang dan telah dihadiri oleh komuniti setempat daripada pelbagai peringkat umur
A microstructure-based elastoplastic model to describe the behaviour of a compacted clayey silt in isotropic and triaxial compression
Get PDFThe paper focuses on the hydro-mechanical behaviour of an unsaturated compacted clayey silt, accounting for fabric changes induced by drying-wetting cycles occurring at low-stress levels. The response along isotropic compression and triaxial compression (shear) at constant water content was investigated by laboratory tests on both as compacted and dried-wetted samples. Compaction induces a micro-structural porosity pertinent to clay peds and a macro-structural porosity external to the peds. Drying-wetting cycles decrease the micro-porosity and increase the macro-porosity, which reduces the water retention capacity, increases the compressibility and promotes higher peak strengths with more brittle behaviour during triaxial compression. A coupled double porosity elastic-plastic model was formulated to simulate the experimental results. A non-associated flow rule was defined for the macrostructure, modifying a stress-dilatancy relationship for saturated granular soils to account for the increase in dilatancy with suction observed in the experiments. The average skeleton stress and suction were adopted as stress variables. Consistently with model predictions, the shear strength at critical state is not significantly influenced by the degree of saturation or by the hydraulic history. On the other contrary, the higher peak strength, brittleness and dilatancy of the dried wetted samples are mostly explained by their reduced water retention capacity
UiTM Mukah rakan strategik utama Jom Masuk U (JMU) 2024 Zon Sarawak II, Sibu / Arif Azizi Che Harun dan Nur Nadia Qausar Juhari
No full textKementerian Pendidikan Tinggi (KPT) melalui Bahagian Kemasukan Pelajar IPTA, Jabatan Pendidikan Tinggi (BKPA, JPT) telah menganjurkan Program Jom Masuk U 2024 (JMU2024) Zon Sarawak II, Sibu pada 18 dan 19 Mei 2024 bertempat di Dewan Naib Canselor Tun Abdul Taib Mahmud, University of Technology Sarawak (UTS), Sibu yang diuruskan oleh Universiti Teknologi MARA Cawangan Sarawak Kampus Mukah selaku rakan strategik bersama
Program kem karnival Science, Technology, Engineering & Mathematic (STEM) 2024 SMK Agama Igan / Nur Nadia Qausar Juhari dan Arif Azizi Che Harun
No full textUiTM Cawangan Sarawak Kampus Mukah telah dijemput untuk menyertai program STEM anjuran SMK Agama Igan bersama SABATI (Sarawak Badan Amal Tenaga Isteri-Isteri) dibawah Program Pendidikan Luar Bandar SABATI-PETROS (STEM -TVET) dengan Kerjasama Unit BImbingan dan Kaunseling sekolah tersebut. Program ini bertujuan memberi galakan kepada para pelajar dan mencetus minat pelajar dalam menceburi bidang STEM, seterusnya melahirkan generasi yang kreatif dan inovatif pada masa hadapan
Magnetic and quadrupole moments of the Z(c)(3900)
Get PDFAzizi, Kazem (Doğuş Author)The electromagnetic properties of the tetraquark state Z(c)(3900) are investigated in the diquark-antidiquark picture and its magnetic and quadrupole moments are extracted. To this end, the light-cone QCD sum rule in electromagnetic background field is used. The magnetic and quadrupole moments encode the spatial distributions of the charge and magnetization in the particle. The result obtained for the magnetic moment is quite large and can be measured in future experiments. We obtain a nonzero but small value for the quadrupole moment of Z(c)(3900) indicating a nonspherical charge distribution
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