کارڈز میں بیعِ صرف کی شرعی وفقہی حیثیت اور اس کی عملی تطبیق

Digital Cards in banking and non banking sector have been widely used and legally accepted in the world today.  They are not only safe and secure for business transactions but also easy to use. This new phenomena has raised many questions for Muslim jurists and Islamic legal scholars as whether or not their transactions are sharīʿah compliant. This paper attempts to study this new phenomenon and analyze the juristic literature in order to explain the Islamic legal status of the utilization of these cards.

Design, Modification and Performance Evaluation of Indigenous Sugarcane Harvester

Pakistan being an agricultural country is thriving day by day to improve agriculture sector but still majority of farmers are not comfortable with the existing agriculture machines available in the market. Among crops being grown, sugarcane has significant value for local sugar industry as well as to export quality sugar. Unfortunately, in Pakistan the major harvesting of sugarcane is carried out manually involving huge amount of female labour. However, few farmers have tried to adopt imported sugarcane harvesters but due to variation in cropping patterns and varieties a lot of issues are faced during sugarcane harvesting. Therefore, the farmers are emphasizing for the modification and indigenization of sugarcane harvester for better sugarcane recovery. Thus, keeping in mind the above issues a study was carried out for the design modification and performance evaluation of indigenous sugarcane harvester. After the development of the machine, different experiments were performed in terms of machine forward speed, field capacity, field efficiency and crop yield.Findings revealed that forward speed was found directly linked with gear and rpm. Maximum power consumption of 17.564 hp (13.10 kW) was recorded with 0.522 m radius of base cutter at its 2250 rpm. Comparatively lowest value 12.876 hp (9.60 kW) was observed at 2026 rpm of cutter. Sugarcane harvester forward speed, theoretical field capacity and effective material capacity was maximum (5.22 km/hr, 0.53 ha/hr, and 15.52 ton/hr) at gear (G3) respectively while effective time required for harvesting was minimum 1.84 hr at gear (G1) with engine rpm 2000 and working width 1.02 m. Sugarcane harvester field efficiency was maximum (75.10%) at gear (G1) with engine rpm 1800 for working width 1.02 m.