حافظ ضیاء الدین احمد
افسوس ہے پچھلے مہینہ حافظ ضیاء الدین احمد صاحب ایڈیٹر ندائے حرم کرانچی کاانتقال ہوگیا۔ مرحوم مدرسہ صولتیہ مکہ معظمہ کے صدر دفتر کے انچارج تھے۔ قرول باغ دہلی میں ان کا دفتر دفترِبرہان کے پڑوس میں تھا۔۱۹۴۷ء کے ہنگاموں میں ہم سے قرول باغ چھٹا تومرحوم اس ملک کو ہی خیرباد کہہ کر کراچی میں جابیٹھے۔ وہ اگرچہ ضابطہ کے عالم نہیں تھے لیکن بڑی اچھی سمجھ بوجھ اوراعلیٰ درجہ کی انتظامی قابلیت رکھتے تھے۔مہمان نوازی، تواضع اورفراغ حوصلگی و سیرچشمی ان کی طبیعت تھی۔ قرآن مجید کے صرف حافظ ہی نہیں تھے بلکہ اس کے عاشق بھی تھے۔ روزانہ خودپابندی کے ساتھ اس کاورد کرتے تھے اوراپنی اولاد کو بھی تلاوت قرآن کی تاکید کرتے رہتے تھے۔ اﷲ تعالیٰ آں مرحوم کوابراروصلحاء کامقام عطافرمائے اورمدرسہ صولتیہ کی اس شاخ کومرحوم جیسے منتظم کے اٹھ جانے کے باعث کسی قسم کاچشم زخم پہنچنے سے محفوظ رکھے۔آمین [مئی۱۹۵۲ء]
There is a great importance and significance of the role of an individual to prevent his body and property from an aggression. Islamic law and conventional law has authorized an individual to repel any kind of aggression upon his body and property and has not forced him to stand hands bound towards the aggressor. This role of an individual will help to decrease the ratio of crimes in society. It has been strived in this paper to provide proof of its legalization from Quran, Sunnah and also from conventional law. It has also been tried to discuss the main portions and relevant issues relating to the said topic such as; aggression, offence, defence during the continuance of aggression or offence and retreat during the aggression in Shariah and Common Law.
In this study 0.5LiMn 2 O 3 .0.5LiNi 1/3 Mn 1/3 Co 1/3 O 2 , a layered lithium-manganese rich nickel manganese cobalt (LMR-NMC) oxide, was a carefully selected composition for use as a cathode material in Li ion batteries. The effect of synthesis method and doping on this layered lithium-manganese rich, mixed metal oxides is presented. First part of this study deals with the effect of synthesis route on the electrochemical properties of the 0.5LiMn 2 O 3 .0.5LiNi 1/3 Mn 1/3 Co 1/3 O 2 material. A comparison between Co- precipitation, low temperature (90°C) sol-gel synthesised and high temperature (120°C) sol- gel synthesised LMR composite materials is presented. The study demonstrated that synthesis procedure and conditions strongly influence the electrochemical properties of the synthesized material. Co-precipitation and sol-gel synthesised LMR composites revealed obvious differences in capacity and cycle life, which give the impression from X-ray photoelectron spectra to be strongly related to the particles‘ surface reactivity. In the second part of study, the LMR-NMC materials were doped with varying amounts of aluminium. Small amounts of Al doping to the sol-gel material were shown to improve the rate capability and cyclability, in addition to decreasing voltage fade. The results were interpreted in terms of charge discharge studies and supported by differential capacity plots, impedance measurements and cyclic voltammetry data. The electrochemistry of an aluminium doped material was revealed to be highly dependent on the degree of aluminium doping – with the behaviour of 1% doped material giving a maximum capacity of 201 mAhg -1 at 150 mAg -1 and a capacity retention of 88% after 200 cycles. An attempt has been made to study the effect of Cr doping as well on the electrochemical properties of the LMR-NMC materials. It results in an increase in the initial charge/discharge capacity of the material while decreasing the capacity retention. However, the Cr as a dopant could not be assigned as an improvement in the LMR mixed metal oxide material. The study established the comparative role of co-precipitation and sol-gel methods on the improvement of electrochemical properties of the LMR-NMC oxides. Additionally, controlled Al doped samples substantially improved the discharge capacity while maintaining capacity retention event at very high C-rate.