Griffith University

About: Griffith University is a education organization based out in Brisbane, Queensland, Australia. It is known for research contribution in the topics: Population & Poison control. The organization has 13830 authors who have published 49318 publications receiving 1420865 citations.

Bifunctional NH2-MIL-88(Fe) metal–organic framework nanooctahedra for highly sensitive detection and efficient removal of arsenate in aqueous media

Abstract: Extensive exposure to and high toxicity of arsenic species have posed severe health threats worldwide. Consequently, it is imperative to develop novel dual functional materials, which can not only precisely monitor trace levels of arsenic, but also simultaneously realize its efficient decontamination. In this study, amino-functionalized iron-based metal organic framework (MOF) nanooctahedra have been successfully synthesized via a facile one-step solvothermal route for the selective detection and facile removal of arsenate from polluted water. Benefiting from the unique fluorescence enhancement and high specific surface area as well as excellent stability, the resultant NH2-MIL-88(Fe) nanooctahedra can be utilized for the quantitative assay of arsenate, accompanied by a fast response time (<1 min), broad linear range (0.1–50 μM) and high sensitivity (detection limit of as low as 4.2 ppb) along with excellent selectivity towards arsenate. More significantly, the proposed sensing system has been further exemplified for the determination of arsenate in real environmental water samples with acceptable recoveries, highlighting its feasibility in complicated environmental samples. It is noteworthy that the as-synthesized NH2-MIL-88(Fe) nanooctahedra also exhibit extraordinary sorption performance towards As(V) in terms of high saturated adsorption capacity (125 mg g−1) and fast sorption kinetics, capable of easily reducing trace amounts of As(V) to below the acceptable standard for drinking water within 60 min. These results indicate that the obtained NH2-MIL-88(Fe) nanooctahedra can be expected to be an excellent candidate for arsenic determination and remediation from contaminated water systems.

Board of Director Characteristics, Institutional Ownership and Fraud: Evidence from Australia

Abstract: Due to the high incidence of fraud in Australia, regulatory reports suggest strengthening the monitoring role of the board of directors (BOD). These reports recommend greater independence and no duality (chairperson of the BOD should not be the CEO) on the BOD. While there is no Australian evidence, research evidence in the U.S. supports these suggested reforms. It is not clear whether the research evidence observed in the U.S. will generalize to the Australian setting because of contextual differences. This study extends the U.S. findings to the Australian context and investigates the relationship between two attributes of the BOD, independence and duality, and fraud. In addition, I examine whether institutional ownership plays a role in the context of fraud. The more highly concentrated institutional ownership in Australia suggests the presence of some relationship. Using a matched sample of fraud and no‐fraud firms from 1988–2000, I find that as the percentage of independent directors and the percentag...

The role of psychological climate in facilitating employee adjustment during organizational change

Abstract: The current research tested a theoretical model of employee adjustment during organizational change based on Lazarus and Folkman's (1984) cognitive-phenomenological framework. The model hypothesized that psychological climate variables would act as coping resources and predict improved adjustment during change. Two variations of this model were tested using survey data from two different organizational samples: 779 public hospital employees and 877 public sector employees. Confirmatory factor analyses and structural equation analyses were conducted in order to evaluate the models. Results showed that employees whose perceptions of the organization and environment in which they were working (that is, psychological climate) were more positive, were more likely to appraise change favourably and report better adjustment in terms of higher job satisfaction, psychological well-being, and organizational commitment, and lower absenteeism and turnover intentions.