مولانا اخلاق حسین قاسمی دہلوی؍ حکیم عزیز الرحمان مؤی؍ ڈاکٹر مقتدی حسن ازہری
افسوس ہے کہ گذشتہ دنوں ہماری مجلس علم و دانش کو مولانا اخلاق حسین قاسمی دہلوی، حکیم عزیز الرحمان مؤی اور ڈاکٹر مقتدی حسن ازہری جیسی اہم شخصیتوں سے محروم ہونا پڑا، قرآن مجید اور علوم دینیہ کی تبلیغ، تفہیم اور توسیع میں ان کی خدمات لائق تحسین رہیں، دارالمصنفین سے ان حضرات کا تعلق اخلاص و تعاون کا تھا، معارف میں ان تینوں کی نگارشات آتی رہیں، افسوس ہے کہ اب ان کی جگہ لینے والے نظر نہیں آتے، اﷲ تعالیٰ ان تمام مرحومین کے حسنات کو قبول کرے اور جنت الفردوس کی نعمت سے نوازے، معارف میں ان کا ذکر تفصیل سے آنا چاہیے، آئندہ شماروں میں شاید یہ ضرورت پوری کی جاسکے۔ ( عمیر الصدیق دریابادی ندوی ، نومبر ۲۰۰۹ء)
It is unique and high distinction of the Muslim Ummah that they have saved the teachings of Prophet Muhammad (PBUH). There have been high profile scholars who had dedicated their lives for the investigation of veracity and authenticity of Ḥadīths. They have been sifting the narrators of Ḥadīths through the myriad of resources to endorse or reject the authenticity of Ḥadīths. Amongst these eminent scholars, Imām Abū Ḥātim and Imām Abū Zur'ah, who made great contribution in the field of Elal Ḥadīth. Both criticized Aḥādīth some of which are quoted in Sahih Imām Bukhārī and Sahih Imām Muslim. Both books have always been taken as an authentic source for the veracity of Aḥādīth. However, they have pointed out a few such aspects which are vital for keeping the veracity and authenticity of Aḥādīth. This article is an attempt to study those Aḥādīth as quoted in the two above mentioned books and were criticized by Imām Abū Ḥātim and Abū Zur’ah in their book Elal Ḥadīths, by comprising with sayings of the concerned scholars. The most accurate aspect has been elaborated.
Escalating modernization has intensified the load requirement in metropolitan areas, which will mount further in future due to increasing trend of urbanization. Moreover, obligation of power system stability requires upgradation and new installation of power transmission systems (PTSs). Conventional PTSs include overhead lines (OHLs), underground cables (UGCs) and gas insulated lines (GILs). OHLs as well as UGCs face several impediments regarding their metropolitan applications like proximity concerns, aesthetics, right of way concerns, trench requirements, electromagnetic compatibility (EMC) concerns, land devaluation, health concerns, and repeated excavations due to faults. Conventional GILs also encounter several hindrances regarding their implementation in urban localities like larger bending radius, trench requirements, structural rigidity, right of way concerns, land devaluation, aesthetics and larger laying length at bends. Thus, complexities associated with conventional schemes necessitate the trenchless subsurface implementation of PTSs which requires structural pliability and significant load bearing capability. Considering the concerns mentioned above, in this thesis, a flexible gas insulated transmission line (FGIL), comprising of pliable enclosure, conductor and insulator is proposed for trenchless subsurface application of PTSs. Concerning the proposed scheme, a comprehensive design and analysis was performed in this research regarding electrostatic, dielectric and mechanical aspects. Practicability of performed design was analyzed analytically as well as through Autodesk Inventor and COMSOL Multiphysics based simulations. Further, an enclosed sphere gap discharge arrangement was developed in order to perform practical investigations regarding the synergistic dielectric characteristics of proposed conductor support with different gaseous dielectrics. Additionally, in order to identify the effectiveness of proposed electrode irregularity suppression scheme for FGIL, reinforced polyvinylchloride enclosure based 11 kV prototypes of FGIL were developed and analyzed through high voltage testing. Finally, as per the performed design, an 11 kV prototype of FGIL, comprising of polyethylene enclosure, was developed and tested through standard power frequency and lightning impulse withstand tests, in order to identify the dielectric withstand capability of proposed scheme. Results reveal that the proposed scheme could provide substantial structural flexibility along with the required electrical as well as mechanical integrity regarding trenchless subsurface applications of PTSs and could simplify the complexities associated with metropolitan applications of conventional PTSs.