17,558 research outputs found

    Corporate social responsibility impact on corporate commitment to climate change actions and sustainable performance perception of employees in Bangladeshi banking sector

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    This study aims to investigate the impact of Corporate Social Responsibility and stakeholders’ orientation (CSR) on sustainable performance based on the perception of employees in the Bangladeshi banking sector. This study also fills the research gap on the relationship between CSR and organizational performance by revealing specific and novel evidence that may account for the variability in earlier study outcomes incorporating seven dimensions of climate change actions. A self-administered closed-ended questionnaire was used to survey 270 respondents from Islamic Shariah banks, conventional private commercial banks, and state-owned commercial banks in Dhaka city. The data was collected through non-probability sampling, specifically convenience sampling. Descriptive statistics were analyzed through SPSS, while inferential statistics were conducted through Smart-PLS.  The study found that Corporate Social Responsibility (CSR) influences sustainable performance perception among Islamic bank employees but not in private and state-owned banks in Bangladesh. CSR orientation positively influences climate change actions in banks, with varying dimensions. Stakeholder orientation affects climate change actions, but only in Islamic banks. The study also revealed that there is no mediating effect of climate change actions between CSR and the sustainable performance perception of employees for sustainable practices in Islamic banks and state-owned banks. The mediating effects of four dimensions of climate change actions found in private commercial banks. There is no mediating effect of the seven dimensions of climate change actions between stakeholders and the performance perception of employees relating to sustainable practices in all banks. The study emphasizes the importance of CSR as a driver of corporate commitment to climate change strategies, offering insight into the subtle dynamics that underpin employees’ view of sustainable performance from the strategic and stakeholder’s theoretical perspectives. In practice, the findings give significant direction for Bangladeshi financial institutions and beyond, providing a novel framework for fostering a culture of sustainability </p

    EUSO-SPB1 mission and science

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    International audienceThe Extreme Universe Space Observatory on a Super Pressure Balloon 1 (EUSO-SPB1) was launched in 2017 April from Wanaka, New Zealand. The plan of this mission of opportunity on a NASA super pressure balloon test flight was to circle the southern hemisphere. The primary scientific goal was to make the first observations of ultra-high-energy cosmic-ray extensive air showers (EASs) by looking down on the atmosphere with an ultraviolet (UV) fluorescence telescope from suborbital altitude (33 km). After 12 days and 4 h aloft, the flight was terminated prematurely in the Pacific Ocean. Before the flight, the instrument was tested extensively in the West Desert of Utah, USA, with UV point sources and lasers. The test results indicated that the instrument had sensitivity to EASs of ⪆3 EeV. Simulations of the telescope system, telescope on time, and realized flight trajectory predicted an observation of about 1 event assuming clear sky conditions. The effects of high clouds were estimated to reduce this value by approximately a factor of 2. A manual search and a machine-learning-based search did not find any EAS signals in these data. Here we review the EUSO-SPB1 instrument and flight and the EAS search

    RE-irradiation of silver nanoparticles obtained by laser ablation in water and assessment of their antibacterial effect

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    The rapid evolution of resistant bacteria is a huge problem in medicine because makes the treatment of infections more and more difficult. The bactericidal properties of noble metal nanoparticles could be a solution. In this work silver nanoparticles were produced by using two nanosecond Nd:YVO 4 lasers operating at 1064 and 532 nm respectively to ablate a silver target submerged in pure de-ionized water. Part of the resulting colloidal solution was injected as a fine stream by a compressed air system and re-irradiated one and three times with the same laser to resize and get uniform nanoparticles. The obtained nanoparticles by ablation and re-irradiation consisted of crystalline Ag nanoparticles with a bimodal size distribution. The particle size has been reduced by subsequent laser re-irradiation with both laser sources, reaching a 40% of mean size reduction. Inhibitory effects on the proliferation of Staphylococcus aureus was demonstrated on silver nanoparticles obtained after re-irradiation with the infrared laser.Xunta de Galicia | Ref. ED481D 2017/010Xunta de Galicia | Ref. ED481B 2016/047-0Xunta de Galicia | Ref. ED431B 2016/042Ministerio de Economía y Competitividad | Ref. MAT2015-71459-C2-2-PMinisterio de Economía y Competitividad | Ref. MAT2015-71459-C2-1-PMinisterio de Educación, Cultura y Deporte | Ref. PRX17/0015

    sj-docx-1-pch-10.1177_21501351231215261 - Supplemental material for Textbook Outcome for Superior Cavopulmonary Connection: A Metric for Single Ventricle Heart Surgery

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    Supplemental material, sj-docx-1-pch-10.1177_21501351231215261 for Textbook Outcome for Superior Cavopulmonary Connection: A Metric for Single Ventricle Heart Surgery by Neel K. Prabhu, Mary E. Moya-Mendez, Lillian Kang, Cathlyn K. Medina, Andrew W. McCrary, Veerajalandhar Allareddy, Douglas Overbey and Joseph W. Turek in World Journal for Pediatric and Congenital Heart Surgery</p

    In situ estimation of ice crystal properties at the South Pole using LED calibration data from the IceCube Neutrino Observatory

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    The IceCube Neutrino Observatory instruments about 1‚ÄČkm3 of deep, glacial ice at the geographic South Pole. It uses 5160 photomultipliers to detect Cherenkov light emitted by charged relativistic particles. An unexpected light propagation effect observed by the experiment is an anisotropic attenuation, which is aligned with the local flow direction of the ice. We examine birefringent light propagation through the polycrystalline ice microstructure as a possible explanation for this effect. The predictions of a first-principles model developed for this purpose, in particular curved light trajectories resulting from asymmetric diffusion, provide a qualitatively good match to the main features of the data. This in turn allows us to deduce ice crystal properties. Since the wavelength of the detected light is short compared to the crystal size, these crystal properties include not only the crystal orientation fabric, but also the average crystal size and shape, as a function of depth. By adding small empirical corrections to this first-principles model, a quantitatively accurate description of the optical properties of the IceCube glacial ice is obtained. In this paper, we present the experimental signature of ice optical anisotropy observed in IceCube light-emitting diode (LED) calibration data, the theory and parameterization of the birefringence effect, the fitting procedures of these parameterizations to experimental data, and the inferred crystal properties.</p

    Health system quality and COVID-19 vaccination: a cross-sectional analysis in 14 countries.

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    The social and behavioural determinants of COVID-19 vaccination have been described previously. However, little is known about how vaccinated people use and rate their health system. We used surveys conducted in 14 countries to study the health system correlates of COVID-19 vaccination. Country-specific logistic regression models were adjusted for respondent age, education, income, chronic illness, history of COVID-19, urban residence, and minority ethnic, racial, or linguistic group. Estimates were summarised across countries using random effects meta-analysis. Vaccination coverage with at least two or three doses ranged from 29% in India to 85% in Peru. Greater health-care use, having a regular and high-quality provider, and receiving other preventive health services were positively associated with vaccination. Confidence in the health system and government also increased the odds of vaccination. By contrast, having unmet health-care needs or experiencing discrimination or a medical mistake decreased the odds of vaccination. Associations between health system predictors and vaccination tended to be stronger in high-income countries and in countries with the most COVID-19-related deaths. Access to quality health systems might affect vaccine decisions. Building strong primary care systems and ensuring a baseline level of quality that is affordable for all should be central to pandemic preparedness strategies

    Downed woody debris carbon emissions in a European temperate virgin forest as driven by species, decay classes, diameter and microclimate

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    Downed woody debris (DWD) plays an important role as regulator of nutrient and carbon (C) cycling in forests, accounting for up to the 20 % of the total C stocks in primary forests. DWD persistence is highly influenced by microbial decomposition, which is determined by various environmental factors, including fluctuations in temperature and moisture, as well as in intrinsic DWD properties determined by species, diameter, or decay classes (DCs). The relative importance of these different drivers, as well as their interactions, remains largely unknown. Moreover, the importance of DWD for C cycling in virgin forests remains poorly understood, due to their scarcity and poor accessibility. To address this research gap, we conducted a study on DWD respiration (RDWD), in a temperate virgin forest dominated by European beech and silver fir. Our investigation analysed the correlation between RDWD of these two dominant tree species and the seasonal changes in climate (temperature and moisture), considering other intrinsic DWD traits such as DCs (1, 2 and 4) and diameters (1, 10 and 25 cm). As anticipated, RDWD (normalized per gram of dry DWD) increased with air temperature. Surprisingly, DWD diameter also had a strong positive correlation with RDWD. Nonetheless, the sensitivity to both variables and other intrinsic traits (DC and density) was greatly modulated by the species. On the contrary, water content, which exhibited a considerable spatial variation, had an overall negative effect on RDWD. Virgin forests are generally seen as ineffective C sinks due to their lack of net productivity and high respiration and nutrient turnover. However, the rates of RDWD in this virgin forest were significantly lower than those previously estimated for managed forests. This suggests that DWD in virgin forests may be buffering forest CO2 emissions to the atmosphere more than previously thought.</p
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