Project description:Existing regulations regarding fuel energy intensity (MJ/km, litres/100 km, or its inverse, miles per gallon) of light-duty vehicles (LDVs: cars, SUVs, and pickup trucks) for 2025 or 2030 either fall short of the longterm technical potential, or contain numerous loopholes that undermine their effectiveness. At the same time, governments are subsidizing the purchase of electric vehicles (EVs) while the market share of SUVs and pickup trucks grows. This paper reviews the feasible fuel and/or electricity energy intensity of LDVs, and argues that the severity of impending anthropogenic global warming merits a strong policy approach that (i) prescribes significant improvements in the energy intensity of non-electric LDVs and plugin hybrid EVs (PHEVs) when running on fuel, (ii) is independent of the number of electric vehicles sold, and (iii) is accompanied by an overall limit on fleet-average CO2 emissions that applies to all manufacturers irrespective of the average size and mass of vehicles sold. Subsidies for EVs should be scaled back or eliminated, relying instead in the near term on deep across-the-board improvements in the fuel efficiency of LDVs that will have beneficial spillover effects on the eventual energy intensity of EVs and mineral requirements following a delayed market scale-up.
Project description:BackgroundExercise can change cellular structure and connectivity (neurogenesis or synaptogenesis), causing alterations in both behavior and working memory. The aim of this study was to evaluate the effect of exercise on working memory and hippocampal neurogenesis in adult male Wistar rats using a T-maze test.MethodsAn experimental design with two groups was developed: the experimental group (n = 12) was subject to a forced exercise program for five days, whereas the control group (n = 9) stayed in the home cage. Six to eight weeks after training, the rats' working memory was evaluated in a T-maze test and four choice days were analyzed, taking into account alternation as a working memory indicator. Hippocampal neurogenesis was evaluated by means of immunohistochemistry of BrdU positive cells.ResultsNo differences between groups were found in the behavioral variables (alternation, preference index, time of response, time of trial or feeding), or in the levels of BrdU positive cells.DiscussionResults suggest that although exercise may have effects on brain structure, a construct such as working memory may require more complex changes in networks or connections to demonstrate a change at behavioral level.
Project description:Carbohydrate restriction, used since the 1700s to prolong survival in people with diabetes, fell out of favor after the discovery of insulin. Despite costly pharmacological and technological developments in the last few decades, current therapies do not achieve optimal outcomes, and most people with diabetes remain at high risk for micro- and macrovascular complications. Recently, low-carbohydrate diets have regained popularity, with preliminary evidence of benefit for body weight, postprandial hyperglycemia, hyperinsulinemia, and other cardiometabolic risk factors in type 2 diabetes and, with more limited data, in type 1 diabetes. High-quality, long-term trials are needed to assess safety concerns and determine whether this old dietary approach might help people with diabetes attain clinical targets more effectively, and at a lower cost, than conventional treatment.
Project description:For those seeking to model biomineralization in vitro, hydrogels can serve as excellent models of the extracellular matrix (ECM) microenvironment. A major challenge posed in implementing such systems is the logistics involved, from fundamental engineering to experimental design. For the study of calcium phosphate (e.g., hydroxyapatite) formation, many researchers use hydrogel-based double-diffusion systems (DDSs). The various designs of these DDSs are seemingly as unique as their applications. In this Highlight, we present a survey of four distinct types of double-diffusion systems and evaluate them in the context of fundamental diffusion theory. Based upon this analysis, we present the design and evaluation of an optimized system. The techniques and framework for the evaluation and construction of a DDS presented here can be applied to any DDS that a researcher may want to implement for their particular studies of biomineralization.
Project description:Global greenhouse gas emissions need to reach net-zero around mid-century to limit global warming to 1.5 °C. This decarbonization challenge has, inter alia, increased the political and societal pressure on companies to disclose their carbon footprints. As a response, numerous companies announced roadmaps to become carbon neutral or even negative. The first step on the journey towards carbon neutrality, however, is to quantify corporate emissions accurately. Current carbon accounting and reporting practices remain unsystematic and not comparable, particularly for emissions along the value chain (so-called scope 3). Here we present a framework to harmonize scope 3 emissions by accounting for reporting inconsistency, boundary incompleteness, and activity exclusion. In a case study of the tech sector, we find that corporate reports omit half of the total emissions. The framework we present may help companies, investors, and policy makers to identify and close the gaps in corporate carbon footprints.
Project description:Intellectual capital (IC) and corporate social responsibility (CSR) provide a strong link between the enterprise and stakeholders. These strategic approaches are responsible in value formation for better financial performance. This study investigates the mediating effects of corporate financial performance on the relationship between IC components (ICs) and CSR of firms from the food industry in Asia. We analyzed 308 firm-year observations of 44 listed firms from 2011 to 2017. The results of this study provided mixed findings regarding the effects of ICs and CSR. In addition, results vary from the disaggregated effects of each IC component on environmental, social, and governance pillars. The results also indicate that the combination of accounting and market-based estimates of financial performance was found to be significant mediating factor to explain the phenomenon which varies per ICs and dimensions of CSR. Lastly, the implications for sustainable business practices and investments in knowledge-based resources in the food industry are elaborated.
Project description:China has witnessed the trend of corporate financialization (CF) with some potential risks as the economy slows down its pace in the past decade. In this paper, we explore whether corporate social responsibility (CSR) could work as an information channel to restrain CF or as reputation insurance to promote CF. We find a significant positive relation between CSR and CF, especially for non-SOEs and enterprises with low ownership concentration and high CSR scores. It verifies that the reputation insurance effect by CSR outweighs the information effect and denies the opposite. The results prove robust in tests including sensitivity and endogeneity test. By expanding the scale and adding new aspects to the discussion about how CSR affects CF, this paper provides valuable empirical support to both theorists and practitioners.
Project description:Among the bacterial symbionts harbored by the model organism Paramecium, many still lack a recent investigation that includes a molecular characterization. The genus Lyticum consists of two species of large-sized bacteria displaying numerous flagella, despite their inability to move inside their hosts' cytoplasm. We present a multidisciplinary redescription of both species, using the deposited type strains as well as newly collected material. On the basis of 16S rRNA gene sequences, we assigned Lyticum to the order Rickettsiales, that is intensely studied because of its pathogenic representatives and its position as the extant group most closely related to the mitochondrial ancestor. We provide conclusive proofs that at least some Rickettsiales possess actual flagella, a feature that has been recently predicted from genomic data but never confirmed. We give support to the hypothesis that the mitochondrial ancestor could have been flagellated, and provide the basis for further studies on these ciliate endosymbionts.
Project description:In the past two decades, corporate hypocrisy has become a phenomenon that cannot be ignored in Corporate Social Responsibility (CSR) practice (Wagner et al., 2009) and has thus become a concern for management scholars (Cho and Lee, 2019). Using smartPLS, based on attribution theory, this paper takes 28 Chinese listed enterprises as examples to explore the influence of CSR motivation on its communication and implementation, as well as the impact of CSR implementation and promotion on consumers' perception of corporate hypocrisy. The research finds a negative correlation between value-driven motivation and corporate hypocrisy and a positive correlation of performance-driven motivation and stakeholder-driven motivation with corporate hypocrisy. The theoretical contribution of this paper is mainly reflected in the following four aspects. (1) It describes the scale of CSR implementation research and enriches the measurement tools of CSR implementation. (2) It enriches and expands research results in the field of CSR motivation perception. From the perspective of CSR and attribution theory, this study explores the influence of consumers' perception of CSR motivation on CSR communication and CSR implementation. (3) It supplements research results in the field of corporate hypocrisy. The influence of CSR communication and CSR implementation on corporate hypocrisy is clarified. (4) It clarifies the impact of CSR communication on CSR implementation so as to help enterprises better match CSR communication strategy and CSR implementation in practice and reduce consumers' perception of corporate hypocrisy. It is suggested that enterprises find their own positioning on CSR motivation, which provides a reference with which enterprises can make better decisions on CSR communication strategy after implementing CSR behavior and provides empirical evidence for the research on CSR motivation perception and corporate hypocrisy in China.
Project description:This data article provides cross-sectionals on the local values of the coefficients of ROE, R&D-TO-SALES, and TOTAL ASSET as regressors of the MARKET-TO-BOOK ratio and is related to the research article entitled "Do Local Causations Matter? The Effect of Firm Location on the Relations of ROE, R&D, and Firm Size with Market-to-Book" (A. Carosi, 2016) [1]. The data are aggregated at the regional level (NUTS2). The reported data are the regional average values of the coefficients of ROE, R&D-TO-SALES, and LN(TOTAL ASSET) on LN(MARKET-TO-BOOK), estimated upon the Italian non-financial listed firms in 1999-2007. Local coefficient estimates for family firms and utilities are also provided.