آداب معاشرت، سورة حجرات کی گیارهویں اور بارهویں آیات کے تناظر میں

Dr. Shari'ati is a revolutionary intellectual personality of this century. He regarded Islamic values ​​as the guarantee of salvation and success for humanity. He sought to mobilize and revive frozen Islamic ideas. That is, tried to bring the Islamic concept out of the boundaries of formal and congested boundaries into common and general thoughts. Dr. Shari'ati also presented a unique view that divine Imam transcends than worldly governments and this divine leadership cannot be determined by (Shuraiet). Rather, it can be diagnosed by an obvious reason (Nass). This doctrine of Dr. Shari'ati is contrary to the ideology of the Sunni and the Shi'ite’s concept of Imamat and Khilafat because the Sunni sect believes that Khilafat Or Imamt should be determine by the Shurait (Council) and Shiites by the will(Nass). According to Dr. Shairathi, Imamat cannot be determining through Shourait or Nass but it can be identified by the superior attributes of the Imam. He believes that Imamat is not an external factor which can gain by attainment or by choice; rather, it is an Inherit object.  In accepting this doctrine of Dr. Shari'ati, than the Imamat becomes a part of the system of naturalism (Takveeni). That makes the Imamat not a model process for humanity. So it would be a complicated issue to discuss and discover either the theory of Dr. Shari'ati is a applicable idea of Imamat or it is a just onlyu idialogy which cannot be practiced. The dissertation has been written to examine the reality of these two cases either Imamat is inherit case or it can be attainment case through Shouriat or Nass.   

Infield Superconducting Transport Properties of Magnetic Nanostructures-Cutl-1223 Composites

(M) x -CuTl-1223; M = Ni, Co, CoFe 2 O 4 , Cr, Al 2 O 3 , nanoparticles-superconductor composites were synthesized by solid-state reaction (ceramic method) and their infield (magnetic) superconducting properties were investigated. Structural, morphological and compositional analysis of these composites were carried by using X-rays diffraction (XRD) analysis, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX), respectively. The infield transport measurements were carried out by resistance versus temperature (RT) measurements with small current ( ˷ 10 μA) by using four-probe technique with the help of physical properties measurement system (PPMS). Broadening in superconducting transition region was observed with increasing the external applied magnetic field (H) in all the samples, which was attributed to thermally activated flux flow (TAFF). Flux pinning strength was calculated by using TAFF model. The field dependent flux flow activation energy {U o (H)} of CuTl-1223 superconducting matrix was increased with addition of ferri-magnetic (CoFe 2 O 4 ) and antiferromagnetic (Cr) nanoparticles up to certain optimum level of concentration. The transition width (ΔT) of CuTl-1223 phase was decreased after addition of these nanoparticles. The enhancement in U o (H) and reduction in ΔT show improvement in flux pinning ability of CuTl- 1223 matrix with addition of CoFe 2 O 4 and Cr nanoparticles. The flux pinning strength of CuTl- 1223 phase was decreased with addition of ferromagnetic (Ni and Co) and non-magnetic (Al 2 O 3 ) nanoparticles. It was observed that U o (H) decreases and ΔT increases with the addition of these nanoparticles. The suppression in U o (H) with increasing magnetic field obeys the power law (U o = β H - a ) . The value of ‘a’ corresponds to the suppression rate of U o (H) with H. The decrease in ‘a’ with the addition of Cr, Co, and Al 2 O 3 nanoparticles showed that the decreasing rate of activation energy with increasing H is lowered with addition of these nanoparticles. Thus although the addition of Co and Al 2 O 3 in CuTl-1223 matrix decreases its flux pinning but their addition has lowered the suppression rate of U o (H) with H, which shows that the inclusion of these nanoparticles can make CuTl-1223 superconductor suitable for high field applications. In case of addition of CoFe 2 O 4 and Ni nanoparticles in CuTl-1223 superconductor, value of ‘a’ increases which indicates that lowering rate of activation energy increases with the rise in H. The transition width (ΔT) was increased with the rise in H, which shows TAFF takes place in the samples with small current. It was observed that broadening in ΔT with ‘H’ obeys a power law (ΔT = ΔT o + CH n ) where ΔT o is the transition width in absence of applied field.