Suchergebnisse
Filter
9 Ergebnisse
Sortierung:
Associations between acute exposure to ambient air pollution and length of stay for inpatients with ischemic heart disease: a multi-city analysis in central China
In: Environmental science and pollution research: ESPR, Band 27, Heft 35, S. 43743-43754
ISSN: 1614-7499
Evaluation of Gas Migration and Rock Damage Characteristics for Underground Nuclear Waste Storage Based on a Coupled Model
In: Science and technology of nuclear installations, Band 2018, S. 1-10
ISSN: 1687-6083
In the deep geological repository of nuclear waste, the corrosion of waste generates gas, which increases the storage pressure, changes the properties of the rock strata, and affects the stability of nuclear waste repository. Therefore, it is of great importance to understand the gas migration in the engineering barrier and the potential impact on its integrity for the safety assessment of nuclear waste repository. A hydro-mechanical-damage model for analyzing gas migration in sedimentary rocks is established in this paper. On the basis of which, a set of coupled formulas for the coupling of gas migration in rock mass is established. The model considers the characteristics of gas migration in sedimentary rock, especially the microcracks caused by the degradation of elastic modulus and damage, and the coupling between the rock deformation and failure of fractures. The numerical simulation of gas injection test is beneficial to understand the mechanism of gas migration process in sedimentary rock.
Chemical compositions and antioxidant capacity of by-products generated during the apricot kernels processing
In: CyTA: journal of food, Band 16, Heft 1, S. 422-428
ISSN: 1947-6345
Lateral and longitudinal variation in phosphorus fractions in surface sediment and adjacent riparian soil in the Three Gorges Reservoir, China
In: Environmental science and pollution research: ESPR, Band 25, Heft 31, S. 31262-31271
ISSN: 1614-7499
What matters: non-pharmaceutical interventions for COVID-19 in Europe
OBJECTIVES: The purpose of this study is to describe the situation of COVID-19 in European countries and to identify important factors related to prevention and control. METHODS: We obtained data from World Health Statistics 2020 and the Institute for Health Metrics and Evaluation (IHME). We calculated the Rt values of 51 countries in Europe under different prevention and control measures. We used lasso regression to screen factors associated with morbidity and mortality. For the selected variables, we used quantile regression to analyse the relevant influencing factors in countries with different levels of morbidity or mortality. RESULTS: The government has a great influence on the change in Rt value through prevention and control measures. The most important factors for personal and group prevention and control are the mobility index, testing, the closure of educational facilities, restrictions on large-scale gatherings, and commercial restrictions. The number of ICU beds and doctors in medical resources are also key factors. Basic sanitation facilities, such as the proportion of safe drinking water, also have an impact on the COVID-19 epidemic. CONCLUSIONS: We described the current status of COVID-19 in European countries. Our findings demonstrated key factors in individual and group prevention measures.
BASE
Eliciting National and Subnational Sets of Disability Weights in Mainland China: Findings From the Chinese Disability Weight Measurement Study
In: THELANCET-D-21-08450
SSRN