”پروفیسر عبد الحق کی یہ کاوش 1995ء میں منظر عام پر آئی تھی۔ اس میں تنقیدی
اور تحقیقی مضامین شامل ہیں “ (33)
پروفیسر عبد الحق نے تحقیق کے موضوع پر متعدد تازہ مضامین لکھ کر یکجا شائع کر دیےہیں۔ محققین کے لیے یہ مضامین راہ نما کا کام دیں گے۔
Bhim Sen Sacher informed Jenkins about the destruction caused by arson in Lahore. Akbari Mandi, Chune Mandi, Chauhatta Basti, Bhagat Singh Basti, Kucha Kagzian and Pipal Vehra had been burnt down. The fire brigade could not cope with those vast and dispersed areas. If someone tried to extinguish the fire he was shot at by the police. Bhim Sen Sachar suggested that the only way to save Lahore was to impose martial law in the city. He hoped that the Governor would take that step immediately.64 Jenkins thanked Lala Bhim Sen Sachar and Gokul for their letters informing him about Lahore. Jenkins explained that fire brigade had done a good job in spite of constraints and difficulties. He believed that all communities had access to incendiary materials, and could use it without detection by traversing joined roof-tops. Throwing fire-balls from one house to another was wreaking devastation. Checking trouble of that kind was not an easy job, but searches were carried out and culprits were arrested.6
In this investigation, composite drain water concentrations were collected from five selected sites of Chakbandi drain in the month of April, May and June, 2016. These composite drain water concentrations were applied to fingerling’s of selected fish species namely, Catla catla, Labeo rohita and Cirrhinus mrigala in laboratory conditions. LC50 were determined and sub-lethal dilutions i.e. 20%, 25%, 30%, 35% and 40% of drain water were tested for acute toxicity trial from April to June, 2016. All the water quality parameters i.e. DO, pH, temperature, conductivity, TDS, salinity, TSS, BOD and COD and ten selected heavy metals (Cu, Cr, Mn, Cd, Co, Ni, Sn, Hg, Zn and Pb) recorded from drain water were found to be above the admissible limits as suggested by FAO/ WHO. Bioaccumulation of these ten heavy metals in the muscle tissues of fish species revealed highly significant variations. Cirrhinus mrigala showed the higher level of bioaccumulation of heavy metals in their muscles when compared with Labeo rohita and Catla catla. Among all the treated fish species, Catla catla showed the maximum growth performance with respect to Labeo rohita and Cirrhinus mrigala. The control fish showed more growth performance than the treated fish group. Maximum mean WBCs were recorded from Cirrhinus mrigala whereas minimum from Catla catla. Similarly, minimum level of RBCs, Hb, HCT and MCV were recorded from Cirrhinus mrigala in comparison with treated and control groups. In this study, DNA damage was quantified in the fish peripheral erythrocytes through different types of damaged cells. Maximum frequency for DNA damaged cells was measured in the erythrocytes of Cirrhinus mrigala than Labeo rohita and Catla catla. Cirrhinus mrigala exhibited the maximum average tail DNA length and average tail moment when compared with Labeo rohita and Catla catla. Maximum mean total no. of cells with micronuclei and maximum micronuclei frequency was recorded in erythrocytes of Cirrhinus mrigala than Labeo rohita and Catla catla. When histopathological analysis of control and treated fish was compared, control fish manifested the normal structures than treated fish which reflected various alterations with respect to liver, kidney, gills and muscles. Conclusively, all the multiple biomarkers performed the reliable role for the evaluation o environmental pollution.Furthermore, multiple biomarker findings are conducive to an early prognosis for environmental management and may assist us in planning strategies to minimize the ecotoxicological impacts of pollutants reaching in freshwater reservoirs, aquatic fauna, particularly fish and indirectly human populations.