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1.
Chemosphere ; 316: 137704, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36592840

RESUMO

Micro (nano)plastics pollution is a noxious menace not only for mankind but also for marine life, as removing microplastics (MPs) is challenging due to their physiochemical properties, composition, and response toward salinity and pH. This review provides a detailed assessment of the MPs pollution in different water types, environmental implications, and corresponding treatment strategies. With the advancement in nanotechnology, mitigation strategies for aqueous pollution are seen, especially due to the fabrication of nanosheets/membranes mostly utilized as a filtration process. Two-dimensional (2D) materials are increasingly used for membranes due to their diverse structure, affinity, cost-effectiveness, and, most importantly, removal efficiency. The popular 2D materials used for membrane-based organic and inorganic pollutants from water mainly include graphene and MXenes however their effectiveness for MPs removal is still in its infancy. Albeit, the available literature asserts a 70- 99% success rate in micro/nano plastics removal achieved through membranes fabricated via graphene oxide (GO), reduced graphene oxide (rGO) and MXene membranes. This review examined existing membrane separation strategies for MPs removal, focusing on the structural properties of 2D materials, composite, and how they adsorb pollutants and underlying physicochemical mechanisms. Since MPs and other contaminants commonly coexist in the natural environment, a brief examination of the response of 2D membranes to MPs removal was also conducted. In addition, the influencing factors regulate MPs removal performance of membranes by impacting their two main operating routes (filtration and adsorption). Finally, significant limitations, research gaps, and future prospects of 2D material-based membranes for effectively removing MPs are also proposed. The conclusion is that the success of 2D material is strongly linked to the types, size of MPs, and characteristics of aqueous media. Future perspectives talk about the problems that need to be solved to get 2D material-based membranes out of the lab and onto the market.


Assuntos
Poluentes Ambientais , Poluentes Químicos da Água , Microplásticos , Plásticos , Carbono , Poluentes Químicos da Água/análise , Poluição da Água , Água
2.
Front Psychol ; 13: 835017, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35619784

RESUMO

The COVID-19 pandemic is an unprecedented time in history. Surrounding this pandemic are many enormous uncertainties across the globe. Severe consequences have assessed for the incomes of almost 84% of employers and 68% of self-employed who are working and living in countries that are or have went through a phase of closing workplaces. Similarly, the global rate of unemployment is also expected to be increased in the coming years as 54% of employers worldwide are running their businesses in the hardest-hit sectors. All of these clearly show the uneven impact of the Coronavirus crisis (COVID-19) which will remarkably compound already present inequalities, difficulties, and vulnerabilities. The economic ramifications for 186 countries under the crunch of the COVID-19 pandemic is also considered tremendous for Pakistan. The core aim of this research was to test a new conceptual framework depicting the ramifications of restructuring processes carried out by management for their organizations amidst the COVID-19 pandemic on an Institute's reputation as an employer brand. It also investigates the impact of perceived restructuring on a corporate brand promise made by the university or institute from the viewpoints of other key stakeholders and potential job seekers. The current study had proposed four hypotheses and according to the results of Structural Equation Modeling, the direct hypothesis based upon the relationship between restructuring and employer branding has been rejected. This study shows that restructuring and employer branding has a negative and insignificant effect on each other. The second direct hypothesis of the study that measures the effect of restructuring on corporate branding has been accepted. A corporate brand is a kind of a hub and it considers how an institute treats and deals with all of its stakeholders. It is different from employer brand as the perceptions of employees were the main focus. So, according to the results restructuring did not cause massive damage to the overall outlook of the institute. Furthermore, for the purpose of mediation analysis, the maximum likelihood method by bootstrapping was adopted to test the indirect hypotheses of the study. Crowdsourcing was introduced as a mediator in this study with restructuring, employer, and corporate brand all together in one framework, which is the novel aspect of this study. There are two indirect hypotheses and according to the results both of them did not show any insignificant results. Firstly, the study analyzed mediation among crowdsourcing, restructuring, and employer branding which was fully accepted as the results showed full mediation between these constructs. Secondly, the study analyzed mediation among crowdsourcing, restructuring, and corporate branding which was partially accepted as results showed partial mediation between these constructs.

3.
J Cosmet Dermatol ; 21(10): 4194-4204, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35253961

RESUMO

PURPOSE: The purpose of this study was to examine how much celebrity endorsement stimulates skin color racism in the cosmetics industry. DESIGN/METHODOLOGY/APPROACH: The data were collected from Google Scholar and Web of Science published articles, and researchers had chosen 45 research articles. Some of the research articles used a quantitative research approach while others had used qualitative research approach. And for the current study, content analysis has been used. FINDINGS: The study finds that celebrity endorsement does influence and promote racism, implying that when celebrities promote fairness products, people perceive themselves inferior due to darker skin tone that gives birth to the notion of racism. Brand Image intervenes in the relationship between Celebrity Endorsement and Racism, and also, intervenes in the relationship between Celebrity Endorsement and Purchase Intention. LIMITATIONS: This study is only limited to Google Scholar and Web of Science directory. Only forty-five articles were taken from 2001 to 2021 year. Real examples were taken from all over the world, but especially from the Less Developed countries like Pakistan and India due to the huge population, rising income, and surging cosmetics industry. Hence, the findings of this study cannot be generalized to the Technologically Advanced Countries. IMPLICATIONS: It is obvious that firms design advertisement campaigns that can get consumers' attention. For this purpose, they engage celebrities to evoke more interest and awareness as well as perception. The study will help the management of different brands to understand that how they can improve their advertisements in a way that does not promote racism. And the celebrities, signing contracts with brands that promote racism, will keep in mind the negative influence these endorsements have on society while companies will make sure that they are also not promoting racism by making such promotional campaigns.


Assuntos
Pessoas Famosas , Intenção , Humanos , Comportamento do Consumidor , Índia
4.
Artigo em Inglês | MEDLINE | ID: mdl-33925322

RESUMO

Organizational crisis can serve as a base to provide an opportunity to an organization for enhancing individuals, organizations, and communities. The healthcare sector is one of those sectors that remains under continuous pressure to provide high-quality service delivery to the patients. Hence, the requirement of innovation for this sector is huge when compared to other sectors. The majority of the previous studies have investigated the phenomenon of CSR at the employee's level (CSR-E) to influence employee behavior positively. However, the importance of CSR-E to enhance the innovative capability of the employees at the workplace is not well-explored in extant literature. Moreover, it is not clear from previous studies how the concept of servant leadership can explain the employee's engagement towards innovative work behavior (EIB). Thus, the current survey aims to test the relationship of CSR-E and EIB in the healthcare sector of Pakistan with the mediating effect of servant leadership. The data of the current study were obtained through a self-administered (paper-pencil) survey and they were analyzed through the structural equation modeling (SEM) technique. The empirical results of SEM analysis revealed that CSR-E and EIB are positively related and servant leadership partially mediates this relationship. The findings of the current study will be helpful for policymakers to improve their understanding towards CSR-E to induce EIB in the time of crisis. At the same time, the current study also highlights the importance of servant leadership to the policymakers in encouraging the employees to display their innovative capability at the workplace to serve their organization during the time of crisis.


Assuntos
Setor de Assistência à Saúde , Liderança , Humanos , Organizações , Paquistão , Responsabilidade Social
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