Introduction to Communication Research: The First Basic Steps

Since the articles publish in Weekend Reviews and journals like Pakistan Perspectives are usually anchored in Communication Research it is incumbent that the first basic steps in that Research are delineated first. The first steps consist of three basic exposures i.e. Selective exposure, selective perception and selective retention. A. Selective exposure means that you expose yourself to those events or developments you’re already familiar with. If that is, if you’re PMLN fan you don’t usually expose yourself to PPP meetings or events. That is you strengthen your already antecedent perception all the more-to the exclusion to other perceptions. B. Selective perception means that even when you expose yourself to selective exposure you try to pursue only those developments or events that you’re at home with. Since you don’t expose yourself to other perceptions you get yourself confirmed or strengthened in your own persistent views. C. Finally, selective retention means that you retain only such perceptions which again are antecedent to your previous perceptions. In any case, the differences wrought by exposing yourself to different views are great, even monumental. This is seen in the respective stance of Quaid-e-Azam Mohammad Ali Jinnah and Mohandas Karam Chand Gandhi on the federal part of the Government of India Act, 1935-1940. Jinnah use to expose himself to all sorts of document, word by word and formulated his stance in the light of his readings.

Assessment of Pollution Parameters in Water and Their Impact on Meat Quality of Rohu Labeo Rohita Inhabiting River Indus at Dg Khan, South Punjab, Pakistan

Heavy metals are natural components of geological structures with their productive role in agriculture, cement and plastic industry. This industrial progress is playing role in the emission of various pollutants in biological systems; hence their levels have been increased from minor to major in terms of pollution. This pollution has influence on the physicochemical features of water along with biological component by deterring the meat quality of fish. Fish is a readily available source of protein for the consumption of human beings. Heavy metals e.g. Nickle, cadmium, chromium, Manganese, lead, iron and zinc are fatal pollutants due to their bio accumulative nature in body tissues. This bioaccumulation of heavy metals leads to health illness of fish and its consumers. These pollutants can influence the normal hematological and serological parameters along with the induction of pathological changes in muscles. Hence, Fish can be used as a bio-indictor in the monitoring of metals pollution as they engaged various trophic levels in a food chain. This research was designed to investigate the heavy metal concentration in River Indus at Dera Ghazi Khan along with their histopathological impact on proximate quality of meat and blood profile of Labeo rohita. Sampling was performed from three different sites of River Indusduring the period from July 2017 to February 2018. These heavy metals in water and fish meat were determined e.g. Cr, Pb, Cu, Zinc, Mn, Iron, Pb, Ni and Cd by using Polarized Zeeman (Z-8230) atomic absorption spectrophotometer at Environmental Science Lab, UVAS Lahore. In water samples, macro minerals concentration as Ca, Mg, Na and K were also analyzed by using spectrophotometer along with various physico-chemical parameters of water like BOD, COD, TDS, TSS, DO, EC, Ph and temperature. In Rohu meat, mean metal concentration (mg/l), was found to be high at Manka Drain site (2) due to dumping of municipal, agricultural and brick kilns untreated waste, as following, Pb (4.6275?9.305), Cd (0.105?0.105), Mn (26.4325?1.357), Ni (0.87375?0.129), Cu (9.86875?1.255), Cr (6.3525?3.068), Zn (12.67625?1.995) and Fe (73.315?2.766). This study confirms that bio-accumulation of metals took place over time. The purpose of conductedresearch was to investigate the impact of heavy metal content of water on proximate composition ofLabeo rohitaand its blood profile from consumer?s health point of view. The research results predict alterations in muscle quality in terms of its intact structure via histopathological observations and protein content via proximate estimation. These results strongly recommend that the permanent evaluation of this aquatic ecosystem should be implemented at study area because; population is on increasing tendency due to which consumption of water with establishment of industries is flourishing at a rapid rate resulting in more effluent production. Furthermore, Installation of effluent treatment plants must be planned to properly dispose-off industrial and sewerage waste to avoid contamination of fresh water reservoir.