خواجہ محمد علی شاہ رحمانی
افسوس ہے کہ گزشتہ جون میں’’برہان‘‘کے خاص مضمون نگار اوررفیق خواجہ محمد علی شاہ صاحب رحمانی کی سہارنپور میں وفات ہوگئی۔مرحوم کی صحت عرصے سے ٹھیک نہیں تھی اس کے باوجود علمی ریسرچ کے کاموں میں لگے رہتے تھے۔ دارالعلوم دیوبند اور مظاہرالعلوم سہارنپور کے ممتازفاضل تھے۔السنۂ مشرقیہ کی بھی بہت سی ڈگریاں ان کے پاس تھیں۔اکابر دیوبند خاص طورپر حضرت الاستاذ علامہ سید محمد انورشاہ صاحب کشمیریؒ اورحضرت مولانا شبیر احمد صاحب عثمانی مرحوم سے والہانہ تعلق رکھتے تھے اوران حضرات کی علمی خصوصیات پران کی گہری نظر تھی۔ پختہ استعداد، واضح العقیدہ مسلمان تھے۔طبیعت میں قناعت اور خودداری کاجوہر نمایاں تھا۔پوری زندگی گوشہ نشینی اور خدمت علم میں بسر کردی۔ جس روزان کی رحلت ہوئی اسی روز کچھ دیر کے بعد ان کے والد ماجد کاسانحہ ارتحال پیش آگیا۔ان کے والد صاحب خانقاہ رحمانی سہارنپور کے سجادہ نشین تھے اور عوام ان سے فیض حاصل کرتے تھے۔رحمھما اﷲ رحمۃ واسعۃ۔
[ستمبر۱۹۶۷ء]
Background and Aims: Muscle strength is the key area to measure the functional status of an individual. Different tools and techniques has been used to detect strength differences and deficits. Hand- held dynamometer is one of the most affordable and handy tools used for this purpose. This study was designed to determine intra-rater reliability of hand- held dynamometer to measure muscle strength in different muscle groups of lower extremity of young athletes. It will further explore the reliability of hand- held dynamometer.
Methodology: In this cross- sectional study young players of squash and badminton in the age group of 18-26 years were selected. The participants were recruited by non- probability convenience sampling technique. The strength of major muscle groups of lower limb was measured by a single male tester twice with gap through isometric make test of dynamometer. The intra-class correlation coefficient was then calculated for two readings of each muscle group by using SPSS version 21.
Results: The intra- class correlation coefficient showed good to excellent reliability. The hip abductors, hip adductors, hip extensors of left side, knee flexors and knee extensors showed excellent reliability. Whereas, hip flexors, ankle plantar- flexors and dorsi-flexors of both sides showed excellent reliability at 95 % confidence interval.
Conclusion: The isometric make test of dynamometer is a reliable tool for the objectification of strength of lower limb in young players participating in squash and badminton.
The full kinetic dispersion relation for the Geodesic acoustic modes (GAMs) including diamagnetic effects due to inhomogeneous plasma density and temperature is derived by using the drift kinetic theory. The fluid model including the effects of ion parallel viscosity (pressure anisotropy) is also presented that allows to recover exactly the adiabatic index obtained in kinetic theory. We show that diamagnetic effects lead to the positive up-shift of the GAM frequency and appearance of the second (lower frequency) branch related to the drift frequency. The latter is a result of modification of the degenerate (zero frequency) zonal flow branch which acquires a finite frequency or becomes unstable in regions of high temperature gradients. By using the full electromagnetic drift kinetic equations for electrons and ions, the general dispersion relation for geodesic acoustic modes (GAMs) is derived incorporating the electromagnetic effects. It is shown that m=1 harmonic of the GAM mode has a finite electromagnetic component. The electromagnetic corrections appear for finite values of the radial wave numbers and modify the GAM frequency. The effects of plasma pressure βe, the safety factor q and the temperature ratio τ on GAM dispersion are analyzed. Using the quantum hydrodynamical model of plasmas, the stability analysis of self-gravitational electrostatic drift waves for a streaming non-uniform quantum dusty magneto-plasma is presented. For two different frequency domains i.e., Ω0d<<ω<Ω0i (unmagnetized dust) and ω<< Ω0d < Ω0i (magnetized dust), we simplify the general dispersion relation for self-gravitational electrostatic drift waves which incorporates the effects of density inhomogeneity ∇n0α, streaming velocity v0α due to magnetic field inhomogeneity ∇B0, Bohm potential and the Fermi degenerate pressure. For the unmagnetized case, the drift waves may become unstable under appropriate conditions giving rise to Jeans instability. The modified threshold condition is also determined for instability by using the intersection method for solving the cubic equation. We note that the inhomogeneity in magnetic field (equilibrium density) through streaming velocity (diamagnetic drift velocity) suppress the Jeans instability depending upon the characteristic scale length of these inhomogeneities. On the other hand, the dust-lower- hybrid wave and the quantum mechanical effects of electrons tend to reduce the growth rate as expected. A number of special cases are also discussed.