105 research outputs found

    Investigating the Effect of Sidewalk Flooring on the Behavioral Pattern (Walking) of Citizens in Urban Spaces (Case Study: Vali asr St., Tehran)

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    The present study has evaluated the effect of architectural forms on the walking activity ofcitizens as a behavioral model in urban physical spaces. The research hypothesis claims that bydesigning purposeful and appropriate architectural forms, the behavior and actions of users in urbanphysical spaces can be to some extent, it designed or controlled, and that the pattern and domains ofhuman behavior in urban streets are the result of the components of environmental quality that areincluded in the design of that street. The present theoretical proposition has been tested in two sequencesfrom Valiasr Street in Tehran. At the theoretical level, the research method is descriptive-analytical andat the experimental level, it is a survey that has been done using the behavioral research method. Theresults show that the floor form and street form are the most influential architectural forms in urbanphysical spaces on the activity of users walking from space in the study sample. Also, someenvironmental factors have a direct effect on human reactions; The research findings show that people'sspeed is directly related to the dimensions of sidewalk carpets and a person tries to take a step accordingto the senses he receives from the sidewalk flooring form and as a result his speed changes accordingto those forms

    Pharmaceutical ethnobotany in the Mahabad (West Azerbaijan) biosphere reserve: ethno-pharmaceutical formulations, nutraceutical uses and quantitative aspects

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    This study endeavors to overcome the limits of an orally transmitted pharmacopoeia, and tries to utilize the large ethnobotany patrimony of the area to investigate the biological diversity. Thirty-five traditional practitioners from dissimilar ethnic groups including traditional health practitioners (THPs) and indigenous people were interviewed. A total of 35 species of plants, belonging to 20 families were recognized for the treatment of more than 26 types of ailments. Informant consensus factor (FIC) values of this study reflected the high agreement in the use of plants in the treatment of gastro-intestinal complaints, infectious, parasitic diseases and constipation among the informants. Constipation had the highest use-reports and 8 species of plants had the highest fidelity level (FL) of 100%. In addition one of the species showed the highest relative importance (RI) value of 2.00. Priority should be given to phytochemical investigation of plants that scored the highest FL, FIC, RI values; as such values could be considered as a good indicator of potential plants for discovering new drugs. In addition, traditional knowledge of THPs should be taken into consideration in order to smooth continuation and extension of the nutraceutical aspects and biological diversity of the region

    Conceptualization of Delimitation of Marine Areas from Legal and Technical Perspectives

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    Boundary delimitation is a complex political- legal and technical process and it is of such a great importance in indicating the jurisdiction of the coastal government over marine spaces that any unilateral delimitation leading to the violation of the rights of other states are not legally valid, and therefore legal and technical conceptualization of delimitation of marine areas has played a significant role in clarifying the principles and rules affecting delimitation. Therefore, this descriptive-analytical study has briefly examined the conceptualization evolution of some concepts of maritime law while relying on governmental and judicial procedures. The results of this paper show that the issue of national governance and legislative jurisdiction of the coastal state over different maritime areas adjacent to its territory has long attracted the attention of experts and over three centuries, prominent jurists have developed various theories in this regard. Moreover, judges of international courts have relied on the guidelines of hydrographic and geological experts and technicians to pass judgements and procedures that are the basis of legal and technical conceptualization of the principles and rules of delimitation. Therefore, conceptualization is regarded as one of the effective strategies for defining and determining maritime boundaries fairly

    Prevalence of stress, anxiety, depression among the general population during the COVID-19 pandemic: a systematic review and meta-analysis

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    Abstract: Background: The COVID-19 pandemic has had a significant impact on public mental health. Therefore, monitoring and oversight of the population mental health during crises such as a panedmic is an immediate priority. The aim of this study is to analyze the existing research works and findings in relation to the prevalence of stress, anxiety and depression in the general population during the COVID-19 pandemic. Method: In this systematic review and meta-analysis, articles that have focused on stress and anxiety prevalence among the general population during the COVID-19 pandemic were searched in the Science Direct, Embase, Scopus, PubMed, Web of Science (ISI) and Google Scholar databases, without a lower time limit and until May 2020. In order to perform a meta-analysis of the collected studies, the random effects model was used, and the heterogeneity of studies was investigated using the I2 index. Moreover. data analysis was conducted using the Comprehensive Meta-Analysis (CMA) software. Results: The prevalence of stress in 5 studies with a total sample size of 9074 is obtained as 29.6% (95% confidence limit: 24.3–35.4), the prevalence of anxiety in 17 studies with a sample size of 63,439 as 31.9% (95% confidence interval: 27.5–36.7), and the prevalence of depression in 14 studies with a sample size of 44,531 people as 33.7% (95% confidence interval: 27.5–40.6). Conclusion: COVID-19 not only causes physical health concerns but also results in a number of psychological disorders. The spread of the new coronavirus can impact the mental health of people in different communities. Thus, it is essential to preserve the mental health of individuals and to develop psychological interventions that can improve the mental health of vulnerable groups during the COVID-19 pandemic

    Advancing the use of noncoding RNA in regulatory toxicology: Report of an ECETOC workshop

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    The European Centre for the Ecotoxicology and Toxicology of Chemicals (ECETOC) organised a workshop to discuss the state-of-the-art research on noncoding RNAs (ncRNAs) as biomarkers in regulatory toxicology and as analytical and therapeutic agents. There was agreement that ncRNA expression profiling data requires careful evaluation to determine the utility of specific ncRNAs as biomarkers. To advance the use of ncRNA in regulatory toxicology, the following research priorities were identified: (1) Conduct comprehensive literature reviews to identify possibly suitable ncRNAs and areas of toxicology where ncRNA expression profiling could address prevailing scientific deficiencies. (2) Develop consensus on how to conduct ncRNA expression profiling in a toxicological context. (3) Conduct experimental projects, including, e.g., rat (90-day) oral toxicity studies, to evaluate the toxicological relevance of the expression profiles of selected ncRNAs. Thereby, physiological ncRNA expression profiles should be established, including the biological variability of healthy individuals. To substantiate the relevance of key ncRNAs for cell homeostasis or pathogenesis, molecular events should be dose-dependently linked with substance-induced apical effects. Applying a holistic approach, knowledge on ncRNAs, 'omics and epigenetics technologies should be integrated into adverse outcome pathways to improve the understanding of the functional roles of ncRNAs within a regulatory context

    Importance of investigating epigenetic alterations for industry and regulators: An appraisal of current efforts by the Health and Environmental Sciences Institute

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    AbstractRecent technological advances have led to rapid progress in the characterization of epigenetic modifications that control gene expression in a generally heritable way, and are likely involved in defining cellular phenotypes, developmental stages and disease status from one generation to the next. On November 18, 2013, the International Life Sciences Institute (ILSI) Health and Environmental Sciences Institute (HESI) held a symposium entitled “Advances in Assessing Adverse Epigenetic Effects of Drugs and Chemicals” in Washington, D.C. The goal of the symposium was to identify gaps in knowledge and highlight promising areas of progress that represent opportunities to utilize epigenomic profiling for risk assessment of drugs and chemicals. Epigenomic profiling has the potential to provide mechanistic information in toxicological safety assessments; this is especially relevant for the evaluation of carcinogenic or teratogenic potential and also for drugs that directly target epigenetic modifiers, like DNA methyltransferases or histone modifying enzymes. Furthermore, it can serve as an endpoint or marker for hazard characterization in chemical safety assessment. The assessment of epigenetic effects may also be approached with new model systems that could directly assess transgenerational effects or potentially sensitive stem cell populations. These would enhance the range of safety assessment tools for evaluating xenobiotics that perturb the epigenome. Here we provide a brief synopsis of the symposium, update findings since that time and then highlight potential directions for future collaborative efforts to incorporate epigenetic profiling into risk assessment

    Association of a \u2018Candidatus Phytoplasma aurantifolia\u2019-related strain with apricot showing European stone fruit yellows symptoms in Iran

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    During 2012\u20132015 surveys in some orchards in Faraghe (Iran), a number of apricot trees showed symptoms resembling those associated with the phytoplasma disease known as European stone fruit yellows that are severe leaf roll, yellowing and die back. The presence of an infectious agent was confirmed by graft transmission experiments in which all the previously symptomless GF-677 (peach 7 almond) trees showed phytoplasma-type symptoms. The phytoplasma presence was confirmed by nested PCR assays using DNA extracted from samples from both field collected and graft-inoculated trees. The sequences of four nested PCR products from symptomatic apricot and experimentally graft-inoculated GF-677 trees were 100% identical to each other. RFLP and phylogenetic analyses carried out on these sequences allowed to cluster the strain infecting apricot trees in Iran with the16SrII-C subgroup phytoplasmas. This is the first report of a 16SrII-C phytoplasma associated with leaf roll and yellowing of the leaves in apricot trees
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