فقہی مسائل میں تطبیق: ” کتاب المیزان “ کا تعارف و جائزہ

Islam teaches that when there is a scholarly disagreement on a certain issue, it is impermissible to condemn a person who follows a position that is different from one's own. Differences in Fiqhi opinions are means of enriching the intellectual landscape of Muslim scholarship. This difference among Islamic jurists and scholars is a source of mercy. The scholars of Fiqh had set several ways in order to control and manage differences among jurists, in hopes of rationalizing the debates and avoid the disadvantages of intolerance. In this regard, Imȃm Sharȃni’s “Kitab-Ul-Mizȃn” is a valuable and seminal work, which comprises and compares the rulings of all Sunni schools of Fiqh as if they were a single school. His concept of mizȃn is the most valuable concept among Tatbeeqi concepts. According to the mizȃn, view differences in Islamic Fiqh are not controversial but all viewpoints are follow able in different circumstances

Characterization of Microbial Biodegradation of Isoproturon under Field and Laboratory Conditions

Isoproturon [3-(4-isopropylphenyl)-1,1-dimethylurea (IPU)], one of the phenylurea herbicides, is extensively used across the globe in agricultural fields to overcome the pre- and post-emergence of broad leaf weeds in cereal cultures. Intensive use of IPU is becoming a source of ground and surface water contamination. Several problems including cancer, endocrine disruption and inhibition of growth in humans, animals and plants are related to IPU toxicity. Keeping in view the environmental concerns associated with IPU, there is a need to develop the strategies for removal of IPU from our environment. In this regard, the present study was conducted firstly to estimate the potential of natural adapted microbial communities for biodegradation of IPU within the agricultural fields of Shorkot, Faisalabad and Sahiwal repeatedly exposed with this herbicide. The in-field spatial variability in IPU degradation within the field was correlated with the prevailing physicochemical properties of the respective soils and was found positively correlated with the organic matter content, total organic carbon as well as the abundance of culturable heterotrophic microorganisms and negatively correlated with the pH. The soil showing a good potential for removal of IPU was used to isolate the bacterial strain having the capability for biodegradation of this herbicide through enrichment culturing using IPU as a sole source of C and N. In this study, a bacterial strain designated as Sphingobium sp. S29 was found to have the potential for biodegradation of isoproturon. The sequence of whole genome of Sphingobium sp. S29 was also sorted using CLC for the functional IPU degrading genes and a putative pdmAB gene potentially involved in the initial steps of IPU degradation was identified. The strain S29 had the potential to degrade known metabolites of IPU including monodemthylisoproturon, didemtheyl-isoproturon and 4-isopropyl aniline as well as other structurally related phenylurea herbicides including diuron and chlorotuluron. The biodegradation of IPU by this strain was optimal under shaking at 30˚C and at 8.0 pH. The bioaugmentation study of the isolated bacterial strain carried out in soil microcosms revealed that this strain has a good potential for biodegradation of isoproturon in the soil in the presence of 24% moisture content and at 30 ˚C. Based on the findings of this study, it might be concluded that the isoproturon dissipation in the agricultural fields in variable not only from field to field but also at different points within the same field thanks to the prevailing physicochemical biological properties of the soils. Moreover, it can also be concluded that the strain Sphingobium sp. S29 can serve as a potential candidate for devising the strategies for bioremediation of the soils contaminated with isoproturon.