463 research outputs found
sj-docx-1-aph-10.1177_10105395231151284 – Supplemental material for Active and Passive Smoking in Adults Undergoing a Long-Term Multi-Setting Healthy Lifestyle Education: Tehran Lipid and Glucose Study
No full textSupplemental material, sj-docx-1-aph-10.1177_10105395231151284 for Active and Passive Smoking in Adults Undergoing a Long-Term Multi-Setting Healthy Lifestyle Education: Tehran Lipid and Glucose Study by Hasti Masihay-Akbar, Parisa Amiri, Leila Cheraghi, Amir Abbas Momenan and Fereidoun Azizi in Asia Pacific Journal of Public Health</p
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
No full textAzizi, 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
No full textAzizi, 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
No full textSoils 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
A microstructure-based elastoplastic model to describe the behaviour of a compacted clayey silt in isotropic and triaxial compression
No full textThe 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
Magnetic and quadrupole moments of the Z(c)(3900)
No full textAzizi, 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
Analyses of gD*sDK and gB*sBK vertices in QCD sum rules
No full textAzizi, Kazem (Dogus Author) -- This paper was firstly submitted to 2nd International Conference on Particle Physics in Memoriam Engin Arik and Her Colleagues.The coupling constants g D*sDK and g B*sBK are calculated in the framework of QCD sum rules. We evaluate the correlation functions of these vertices considering both D(B) and K mesons off-shell and obtain the results as g D*sDK = (2.89 ± 0.25) and g B*sBK = (3.01 ± 0.28)
Strong Ds∗ Dsη (′) and Bs∗ Bsη (′) vertices from QCD light-cone sum rules
No full textAzizi, Kazem (Dogus Author)The strong Ds∗Dsη(′) and Bs∗Bsη(′) vertices are studied and the relevant couplings are calculated in the context of the light-cone QCD sum rule method with twist-4 accuracy by including the next-to-leading-order corrections. In the analysis, both the quark and gluon components of the η and η′ mesons and the axial-anomaly-corrected higher-twist distributions are included
- …
