Development of plant based nanoparticles has many advantages over conventional physico-chemical methods and has various applications in medicine and biology. in present study, zinc oxide (Zno) nanoparticles (nps) were synthesized using leaf extracts of two medicinal plants Cassia fistula and Melia azadarach. 0.01 M zinc acetate dihydrate was used as a precursor in leaf extracts of respective plants for NPs synthesis. The structural and optical properties of NPs were investigated by X-ray diffraction (XRD), fourier transform infrared (ftiR) spectroscopy, scanning electron microscope (SeM), ultraviolet-visible spectrophotometer (UV-Vis) and dynamic light scattering (DLS). the antibacterial potential of Zno NPs was examined by paper disc diffusion method against two clinical strains of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) based on the zone of inhibition and minimal inhibitory indices (Mic). change in color of the reaction mixture from brown to white indicated the formation of Zno NPs. UV peaks at 320 nm and 324 nm, and XRD pattern matching that of JCPDS card for ZnO confirmed the presence of pure ZnO NPs. FTIR further confirmed the presence of bioactive functional groups involved in the reduction of bulk zinc acetate to Zno nps. SeM analysis displayed the shape of nps to be spherical whereas DLS showed their size range from 3 to 68 nm. The C. fistula and M. azadarach mediated Zno nps showed strong antimicrobial activity against clinical pathogens compared to standard drugs, suggesting that plant based synthesis of nps can be an excellent strategy to develop versatile and eco-friendly biomedical products. Plant mediated synthesis of nanoparticles (NPs) is a revolutionary technique that has wide range of applications in agriculture, food industry and medicine. NPs synthesized via conventional methods have limited uses in clinical domain due to their toxicity. Due to the physio-chemical properties of plant based NPs, this method also offer an added advantage of increased life span of NPs that overcome the limitations of conventional chemical and physical methods of NPs synthesis 1-3. Plants possess rich genetic variability with respect to number of biomolecules and metabolites like proteins, vitamins, coenzymes based intermediates, phenols, flavonoids and carbohydrates. These plant metabolites contain hydroxyl, carbonyl, and amine functional groups that react with metal ions and reduce their size into nano range. More specifically, flavonoids contain several functional groups and it is believed that-OH group of flavonoids is mainly considered responsible for the reduction of metal ions into NPs 4. These molecules not only help in bioreduction of the ions to the nano scale size, but they also play a pivotal role in the capping of the nanoparticles which is important for stability and biocompatibility 5. Reducing agents such as phenolic compounds, sterols and alkaloids can reduce metal ions into NPs in a single reaction 6 .

Purpose This study aims to explore the challenges to knowledge sharing (KS) in the context of public sector universities in developing countries. Furthermore, it explores why knowledge hoarding behaviour is flourishing even when employees are encouraged to share their knowledge in organisations and are rewarded for doing so. Design/methodology/approach Research data were collected from vice chancellor, registrar, professors, assistant professors and lecturers using an interview technique. They shared their knowledge, expertise, experiences and understanding about issues relating to KS practices in public universities. These interviews were thematically analysed using the NVivo 11-Plus software and different themes emerged. Findings The results reveal that hoard knowledge to gain power, authority, influence, promotion opportunities and employee favouritism negatively influence KS practices. Furthermore, an unsupportive culture and a poor linkage between KS and rewards negatively influence KS practices in public sector universities. Research limitations/implications The present study aids academic leadership in designing policies and strategies to enhance KS among faculty staff and to create a supportive KS culture. These results are useful for top management officials of public sector universities, especially in developing countries, and for policy makers, who can plan and execute effective policies to foster KS behaviour. Originality/value The originality can be viewed as a new window open towards the motivation of the university staff to hoard their knowledge instead of sharing it. This study gives the novel conceptual model based on why people do not share their knowledge and how KS practices can be fostered among the employees in public sector universities. Few studies have been conducted to explore KS issues in the real context of developing countries, and specifically in the Asian culture.

Purpose The purpose of this paper is to investigate new emerging organizational parameters and their roles in successful change implementation. These organizational parameters are rarely investigated especially in the context of organizational change (OC) in private and public sector organizations. Design/methodology/approach In cumulative, 403 valid responses have been obtained randomly from public sector workers by using self-administered questionnaires. Findings The results reveal that knowledge sharing regarding incremental and radical changes can helpful for effective OC implementation. Findings highlight the significant role of emotional and social intelligence in managing resistance and bringing openness to change in these organizations. It is also found that social media has become an important emerging organizational parameter to foster effective communication and knowledge sharing during OC implementation. Apart from the direct effects, readiness to change has multiple effects coupled with emerging organizational parameters to implement change successfully. Research limitations/implications The results of the current study offer diversified implications for theory, practice and global society. The theoretical base is taken from the well-known theories of management (i.e. Lewin’s three-step model, field theory, intelligence theory, cost-effective theory, social exchange theory, social network theory and social penetration theory). Emerging organizational parameters that have a potential impact on effective change implementation are identified. The findings suggest that global organizations should have to initiate effective networking structure using social media applications and social intelligence skills to remain connected and get positive responses about change formulation and implementation decision. Originality/value A majority of studies have presented the research model on OC implementation in the context of developed countries, which form 30 percent of the world’s population, mostly the Americas and Europe. It is observed that a developing country, such as Pakistan, has a culture that is based on power distance, collectivism and more political influence as compared to developed countries. Triandis et al. (1980) argued that any theoretical contribution without considering the cultural aspect can lead to bias findings. There is limited research available in the world that is conducted to examine the interactive effects of readiness to change on the relationship between effective change implementation, knowledge sharing, intelligence and social media. These findings are useful to plan and execute OC using new emerging organizational parameters.

No abstract