396 research outputs found
The characteristics of chemical firms registering for ISO 14001 or Responsible Care
We use survey data to investigate the determinants of chemical firms' registration for the ISO 14001 standard or the Responsible Care program. We show that most determinants are different for the two systems analyzed: while firm size, previous experience with similar standards, information disclosure requirements and customers'' location are major determinants of ISO 14001 standard registration, regulatory pressure, past environmental problems, and future risks are the main drivers of Responsible Care registration.
Differential effects of corporate social responsibility on downsizing: evidence from the United States
Academic integrity at the University of Montenegro : pathway to certification
Academic dishonesty is one of the major challenges in higher education. In developed countries, higher education institutions have, for some years now, begun to put in place strategies and mechanisms to combat academic misconduct. In developing countries, such as Montenegro, the formalisation of processes to strengthen academic integrity is a relatively new concern. In this paper, we will analyse the framework for the development of a determined academic integrity strategy, which resulted in the international certification of the University of Montenegro. Based on the literature review on academic integrity and using the case analysis method, we highlight the steps in the certification process. We will show how the holistic approach that has been adopted strengthens the culture of academic integrity
Adult stem cell maintenance and tissue regeneration around the clock: do impaired stem cell clocks drive age-associated tissue degeneration?
Human adult stem cell research is a highly prolific area in modern tissue engineering as these cells have significant potential to provide future cellular therapies for the worldâs increasingly aged population. Cellular therapies require a smart biomaterial to deliver and localise the cell population; protecting and guiding the stem cells toward predetermined lineage-specific pathways. The cells, in turn, can provide protection to biomaterials and increase its longevity. The right combination of stem cells and biomaterials can significantly increase the therapeutic efficacy. Adult stem cells are utilised to target many changes that negatively impact tissue functions with age. Understanding the underlying mechanisms that lead to changes brought about by the ageing process is imperative as ageing leads to many detrimental effects on stem cell activation, maintenance and differentiation. The circadian clock is an evolutionarily conserved timing mechanism that coordinates physiology, metabolism and behavior with the 24 h solar day to provide temporal tissue homeostasis with the external environment. Circadian rhythms deteriorate with age at both the behavioural and molecular levels, leading to age-associated changes in downstream rhythmic tissue physiology in humans and rodent models. In this review, we highlight recent advances in our knowledge of the role of circadian clocks in adult stem cell maintenance, driven by both cell-autonomous and tissue-specific factors, and the mechanisms by which they co-opt various cellular signaling pathways to impose temporal control on stem cell function. Future research investigating pharmacological and lifestyle interventions by which circadian rhythms within adult stem niches can be manipulated will provide avenues for temporally guided cellular therapies and smart biomaterials to ameliorate age-related tissue deterioration and reduce the burden of chronic disease
Impaired Insulin sensitivity and Insulin secretion in Haemodialysis patients with and without Secondary Hyperparathyroidism
The aim of our study was to investigate insulin sensitivity and beta cell function in hemodialysis (HD) patients without diabetes. We hypothesized that parathyroid gland function was a determinant of insulin sensitivity and/or beta cell function. The study was a randomized, cross-sectional one and patients were divided into two groups (total 27 patients), Gp.1 being those with relative hypoparathyroidism (iPTH<200 pg/ml)  9 (33.3%), Gp.2 those with hyperparathyroidism (iPTH200 pg/ml)  18 (66.6%) with Gp.3 (consisting of 43 healthy subjects acting as controls). Insulin resistance and insulin secretion were calculated from fasting serum insulin and glucose concentrations by the Homeostatic Model Assessment score (HOMA IR and HOMA BETA). The value of HOMA IR (3.28±1.3 for Gp.1, 4.80±2.4 for Gp.2, 1.70±0.8 for Gp.3) as well as the glucose level (5.0±1.0mmol/l in Gp.1, 5.2±0.8mmol/ l in Gp.2, 4.6±0.4mmol/l in Gp.3) was significantly higher in HD patients than in control subjects. Excessive insulin secretion was present in HD patients (as assessed by HOMA BETA) significantly higher only in Gp.1 (p=0.02).peer-reviewe
Mechanical stretch and chronotherapeutic techniques for progenitor cell transplantation and biomaterials
In the body, mesenchymal progenitor cells are subjected to a substantial amount external force from different mechanical stresses, each potentially influences their behaviour and maintenance differentially. Tensile stress, or compression loading are just two of these forces, and here we examine the role of cyclical or dynamic mechanical loading on progenitor cell proliferation and differentiation, as well as on other cellular processes including cell morphology, apoptosis and matrix mineralisation. Moreover, we also examine how mechanical stretch can be used to optimise and ready biomaterials before their implantation, and examine the role of the circadian rhythm, the bodyâs innate time keeping system, on biomaterial delivery and acceptance. Finally, we also investigate the effect of mechanical stretch on the circadian rhythm of progenitor cells, as research suggests that mechanical stimulation may be sufficient in itself to synchronise the circadian rhythm of human adult progenitor cells alone, and has also been linked to progenitor cell function. If proven correct, this could offer a novel, non- intrusive method by which human adult progenitor cells may be activated or preconditioned, being readied for differentiation, so that they may be more successfully integrated within a host body, thereby improving tissue engineering techniques and the efficacy of cellular therapies
Assessing the Appraisal of Research Quality in Social Sciences and Humanities: A Case Study of the University of Montenegro
Background: A noteworthy attempt has recently been made to extend the same or analogous evaluation criteria traditionally employed in natural and technical sciences to social sciences and humanities domains. However, this endeavor has sparked considerable reactions among researchers, leading to robust discussions and debates. Objectives: This research aims to describe the scholarsâ perception of the research quality evaluation in Montenegro\u27s social sciences and humanities. Methods/Approach: Focus-group interviews in which 25 interlocutors from various fields of social sciences and humanities were used. The participants discussed the given topic in five focus group interviews and were prompted by questions that specified the topic. Results: Different perceptions occur within the social sciences and humanities and are visible within individual areas. Respondents think that the current way of evaluating the results of research work in social sciences and humanities ignores the specificities of research methodologies and practices. Conclusions: The respondents show a common element of perception, i.e., that the research quality evaluation in the social sciences and humanities must be multidimensional, meaning that it must include the necessary indicators adjusted to concrete research field as much as possible but also contain agreeably qualitative criteria
Assessing Tourist Revisit Intention through the Sports and Recreational Services Offered
Background: Sports and recreational tourism are forms of tourism that imply active involvement of tourists in various sports activities during their vacation, and it can be said that the main motive of such a vacation is a sport. Objectives: This research aimed to determine the relationship between sports and recreational activities and tourist satisfaction based on the questionnaire related to the behaviour and satisfaction of tourists during their stay in Montenegro. Methods/Approach: Regression analysis has been conducted in order to assess the interaction between sport-recreational activities and previous experience in Montenegro, and their effect on tourist revisit intention. Results: Empirical results demonstrate the influence of sports and recreational services on tourist satisfaction measured by touristsâ revisit intentions. Distinguishing between sports, and health, spa and wellness facilities and services, the findings indicate that health, spa, and wellness facilities and services have a higher impact on revisit intention than sports activities. In addition, the interaction effect between different sports and recreational activities and previous experience in Montenegro did not provide a more amplified effect on tourist satisfaction. Conclusions: Establishing closer links between workers who provide sports services and those providing other tourist services is one of the main challenges in the future of the development of sports tourism in Montenegro, as one of the most critical aspects that can provide tourist satisfaction. The data study can be used for more efficient and effective decision making and strategy development of sports and recreational activities in the tourism industry
CSR related management practices and Firm Performance: An Empirical Analysis of the Quantity-Quality Trade-off on French Data
This paper analyzes how different combinations of Corporate Social Responsibility (CSR) dimensions affect corporate economic performance. We use various dimensions of CSR to examine whether firms rely on different combinations of CSR, in terms of quality versus quantity of CSR practices. Our empirical analysis based on an original database including 10,293 French firms shows that different CSR dimensions in isolation impact positively firms' profits but their effect in term on intensity varies among CSR dimensions. Moreover, the findings on the qualitative CSR measure, based on interaction between its dimensions, show that the substitutability of these dimensions is highly significant for firm performance. However, in terms of the intensity, those interactions produce differential effects
Comparing circadian dynamics in primary derived stem cells from different sources of human adult tissue
Optimising cell/tissue constructs so that they can be successfully accepted and integrated within a host body is essential in modern tissue engineering. To do this, adult stem cells are frequently utilised, but there are many aspects of their environment in vivo that are not completely understood. There is evidence to suggest that circadian rhythms and daily circadian temporal cues have substantial effects on stem cell activation, cell cycle, and differentiation. It was hypothesised that the circadian rhythm in human adult stem cells differs depending on the source of tissue and that different entraining signals exert differential effects depending on the anatomical source. Dexamethasone and rhythmic mechanical stretch were used to synchronise stem cells derived from the bone marrow, tooth dental pulp, and abdominal subcutaneous adipose tissue, and it was experimentally evidenced that these different stem cells differed in their circadian clock properties in response to different synchronisation mechanisms. The more primitive dental pulp-derived stem cells did not respond as well to the chemical synchronisation but showed temporal clock gene oscillations following rhythmic mechanical stretch, suggesting that incorporating temporal circadian information of different human adult stem cells will have profound implications in optimising tissue engineering approaches and stem cell therapies
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