4,205 research outputs found

    Antioxidants of natural plant origins: from sources to food industry applications

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    ReviewIn recent years, great interest has been focused on using natural antioxidants in food products, due to studies indicating possible adverse effects that may be related to the consumption of synthetic antioxidants. A variety of plant materials are known to be natural sources of antioxidants, such as herbs, spices, seeds, fruits and vegetables. The interest in these natural components is not only due to their biological value, but also to their economic impact, as most of them may be extracted from food by-products and under-exploited plant species. This article provides an overview of current knowledge on natural antioxidants: their sources, extraction methods and stabilization processes. In addition, recent studies on their applications in the food industry are also addressed; namely, as preservatives in different food products and in active films for packaging purposes and edible coatingsinfo:eu-repo/semantics/publishedVersio

    Endometriosis: A Rare Cause of Large Bowel Obstruction.

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    Large bowel obstruction can result in significant morbidity and mortality, especially in cases of acute complete obstruction. There are many possible causes, the most common in adults being colorectal cancer. Endometriosis is a benign disease, and the most affected extragenital location is the bowel, especially the rectosigmoid junction. However, transmural involvement and acute occlusion are very rare events. We report an exceptional case of acute large bowel obstruction as the initial presentation of endometriosis. The differential diagnosis of colorectal carcinoma may be challenging, and this case emphasizes the need to consider intestinal endometriosis in females at a fertile age presenting with gastrointestinal symptoms and an intestinal mass causing complete large bowel obstruction.info:eu-repo/semantics/publishedVersio

    Model-independent constraints on the shape parameters of dilepton angular distributions

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    The coefficients determining the dilepton decay angular distribution of vector particles obey certain positivity constraints and a rotation-invariant identity. These relations are a direct consequence of the covariance properties of angular momentum eigenstates and are independent of the production mechanism. The Lam-Tung relation can be derived as a particular case, simply recognizing that the Drell-Yan dilepton is always produced transversely polarized with respect to one or more quantization axes. The dilepton angular distribution continues to be characterized by a frame-independent identity also when the Lam-Tung relation is violated. Moreover, the violation can be easily characterized by measuring a one-dimensional distribution depending on one shape coefficient.Comment: 7 page

    ProFuelDB : an open-access database of physiological properties of biofuel-producing anaerobic prokaryotes

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    Anaerobic microorganisms are attractive for the synthesis of fuels and chemicals, but information on the physiology of culturable anaerobes is dispersed in scientific literature. Herewith we present the ProFuelDB, a web-based publicly available database prototype compiling information on the physiology of anaerobic prokaryotes with relevance for biofuels production. It is foreseen that this prototype will evolve into a broader database of physiological properties of anaerobic prokaryotes with biotechnological relevance

    Does society moral values matter for earnings management? Empirical evidences around the world

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    The ethics and moral issues involved in the financial reporting process has long been a concern of the accounting profession, promoting intense discussions on the part of both academia and market players. Considering this relevant debate, this study aims to analyze the effect of society moral values on earnings management. Despite manipulation of accounting amounts be one of the most discussed subjects on accounting literature, their motivation and practice related to ethics and moral values seem to be largely discussed in accounting literature only theoretically and through qualitative ways. We fill this gap and investigate the association between societies moral values and accruals-based earnings management in an international sample encompassing 12,080 firms from 39 non-US countries. We use data from the years 2000 to 2017 and the final sample is composed of 99,807 firm-year observations. Based on an international questionnaire by World Values Survey Association, we constructed an index of moral values in a country-level. Based on econometric estimations, our empirical finds suggest that societies where morally questionable behaviors are less acceptable (e.g., accepting bribery, deflecting taxes, among others) present lower levels of accruals-based earnings management, confirming that manipulation of accounting amounts is less acceptable where societies has higher moral values Additionally, we provide empirical evidences that society moral values moderate the effect of the mandatory adoption of International Financial Reporting Standards (IFRS) on earnings management. Our study contributes to earnings management literature, discussing about society moral values and earnings manipulation in a large empirical way, providing relevant discussions to regulators and other market participants on ethical and moral implications of managers and police-makers in the preparation of accounting information.info:eu-repo/semantics/publishedVersio

    Earnings management of brazilian firms in the IFRS era: The role of economic and institutional factors

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    This study investigates whether accounting quality – more specifically regarding the level of earnings management by accruals – is associated with a country’s economic and institutional factors that change over time in IFRS era. Based on a sample of 1,387 Brazilian firm-year observations and data regarding 2011 to 2018, econometric models are estimated considering the absolute amount of discretionary accruals as proxy for earnings management and different aspects related to economic and institutional factors of preeminent importance to an emerging economy. We show that in general, high inflation, stock market volatility, and policy uncertainty rates, as well as lower regulatory quality, on average, are associated with a higher level of earnings management in Brazil. This study contributes to the accounting literature in emerging economies discussing the role of economic and institutional factors on accounting quality in the IFRS era in one of the largest developing country in the world. Compared to developed countries or even to other developing economies, Brazil stands out as an emerging economy of considerable economic and political instability, making it a valuable setting for this analysisinfo:eu-repo/semantics/publishedVersio
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