The aim of this current piece of writing is to draw the attention of readers and researchers toward the natural antioxidants that can take the place of synthetic antibiotics to avoid bacterial resistance and gastrotoxicity/nephrotoxicity. Antioxidants such as polyphenols, vitamins, and carotenoids are the organic compounds mainly extracted from natural sources and dominantly involved in boosting the defense system of organisms. The main public health-related issue over the globe is ever-growing bacterial resistance to synthetic antibiotics, which is being continuously reported during the last decade. Further, the pipeline of the development of new synthetic antibacterial agents to replace the resistant antibiotics in clinical setup is gradually drying up. This scenario originated the concept to revive the interest toward natural antibacterial products due to their chemical diversity, which provide important therapeutic effect and make the microbes unable to copy them for creating resistance. Natural products, especially polyphenols had been seen in antioxidant, antibacterial, anticancer, anti-inflammation, and antiviral activities with encouraging results. In this chapter, we will focus over the role of natural antioxidants as antibacterial agents.

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Scintigraphic techniques have opened a new era of developments in the localization of infectious and cancerous foci. Diseases area targeting mechanisms of radiopharmaceuticals encompasses visualization, characterization, and measurement of physiological and biological functioning at targeted sites in addition to measure the area and density of the disease. The accumulation of a radiopharmaceutical at specific organ is based upon numerous processes such as enzymatic interactions, receptor binding site, transport of chemical species and elimination of damaged cells from circulation by a normal metabolic process. PET and SPECT are developing scanning techniques that provides effective diagnostic tool to identify pathophysiology of diseased cells. In this chapter, we are exploring and explaining different mechanisms of radiopharmaceutical localization for imaging and therapeutic processes. The knowledge of these mechanisms will help to develop target based new radiopharmaceuticals using variety of medically used radioisotopes either for imaging or therapy of diseased cells.

Residents satisfaction of students depends on quality residential facilities, quiet study environment and positive roommate relationships. For this purpose, the present study aims to analyze determinants of residents satisfaction with hostel facilities by using a convenience sampling to collect 500 residents of public and private hostels from a metropolitan city of Pakistan i.e. Faisalabad. The logistic regression model was employed to estimate the impact of hostel facilities on resident satisfaction. The Results infer that different facilities; mess, kitchen, washroom, electricity, water supply, cleanliness, staff, security, accommodation, and bedroom, have a significant impact on the residents satisfaction. However, a non-significant level of certain variables exposed that these variables are not playing an important role in the resident's satisfaction, so the hostel administration does not need to spend money and time to provide these facilities for hostel residents. The present study results implied that the management should focus on those factors where the residents are assigning positive values to increase resident satisfaction. It will have a significant impact on the revenue streams of the hostel business.