检索结果-内蒙古大学图书馆

Temperature modification of air pollutants and their synergistic effects on respiratory diseases in a semi-arid city in Northwest China

引用

ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024年第8期46卷 284-284页

作者： Qin, Pengpeng Ma, Yuxia Zhao, Yuhan Liu, Zongrui Wang, Wanci Feng, Fengliu Cheng, Bowen Lanzhou Univ Minist Educ Coll Atmospher Sci Key Lab Semiarid Climate Change Lanzhou 730000 Peoples R China

Air pollutants and temperature are significant threats to public health, and the complex linkages between the environmental factors and their interactions harm respiratory diseases. This study is aimed to analyze the impact of air pollutants and meteorological factors on respiratory diseases and their synergistic effects in Dingxi, a city in northwestern China, from 2018 to 2020 using a generalized additive model (GAM). Relative risk (RR) was employed to quantitatively evaluate the temperature modification on the short-term effects of PM2.5 and O3 and the synergistic effects of air pollutants (PM2.5 and O3) and meteorological elements (temperature and relative humidity) on respiratory diseases. The results indicated that the RRs per inter-quatile range (IQR) rise in PM2.5 and O3 concentrations were (1.066, 95% CI: 1.009-1.127, lag2) and (1.037, 95% CI: 0.975-1.102, lag4) for respiratory diseases, respectively. Temperature stratification suggests that the influence of PM2.5 on respiratory diseases was significantly enhanced at low and moderate temperatures, and the risk of respiratory diseases caused by O3 was significantly increased at high temperatures. The synergy analysis demonstrated significant a synergistic effect of PM2.5 with low temperature and high relative humidity and an antagonistic effect of high relative humidity and O3 on respiratory diseases. The findings would provide a scientific basis for the impact of pollutants on respiratory diseases in Northwest China.

关键词： Air pollution Temperature modification Respiratory diseases generalized additive model Synergistic effects

来源：评论

学校读者我要写书评

暂无评论

Gap analysis and review of survey effort disruption in North Sea and North-eastern Atlantic bottom trawl surveys

引用

ICES JOURNAL OF MARINE SCIENCE 2025年第2期82卷

作者： Stroh, Anna K. Stokes, David Gerritsen, Hans D. Brophy, Deirdre Minto, Coilin Atlantic Technol Univ Marine & Freshwater Res Ctr Dept Nat Resources & Environm Dublin Rd Galway H91 T8NW Ireland Marine Inst Fisheries Ecosyst Advisory Serv Oranmore H91 R673 Ireland

Fisheries-independent surveys are essential to stock assessment, providing estimates on relative abundance, distribution, and biology of commercially fished species. Environmental, mechanical, and logistical issues can disrupt survey operation and reduce survey effort. We synthesized causes of disruptions to surveys using 25 years of publicly available records for North Sea and North-eastern Atlantic bottom trawl survey operations. We assigned each recorded disruption one of three categories: Spatial-long-term (e.g. windfarms, marine protected areas), Spatial-short-term (e.g. fisheries, mechanical, and legal issues), and random spatial processes (e.g. weather and mechanical issues). Furthermore, we analysed spatiotemporal patterns of survey effort relative to effort targets identified in the survey protocols for bottom trawl surveys in the North Sea and the North-East Atlantic. Lastly, we conducted a case study on the Irish survey (IGFS) to explore the effect of weather, time, and geographic position on the probability of sampling an IGFS station using a binomial generalized additive model. On average, the number of stations sampled was lower than the targets indicated in the sampling protocol for the North Sea and Irish surveys. Weather had consistent effects on effort in all three surveys, implying that their designs are vulnerable to the influence of environmental factors. However, neither storminess (using wave height as a proxy) nor station location was a reliable predictor of sampling probability in the IGFS survey. We provide a framework for analysing the robustness of survey designs to disruption. Our approach could be used in the future to monitor changes in survey effort in relation to protocols, facilitating critical evaluation of survey design efficacy.

关键词： fisheries unavoidable survey effort reduction survey indices qualitative review generalized additive model

来源：评论

学校读者我要写书评

暂无评论

Weight loss dynamics after laparoscopic sleeve gastrectomy: a retrospective single center analysis with age and preoperative weight stratification

引用

SCIENTIFIC REPORTS 2025年第1期15卷 1-11页

作者： Kankaya, Burak Buyukasik, Suleyman Altundal, Yusuf Emre Ozgul, Mustafa Etemad, Ayden Rahmanbakhsh, Paria Guzelaltuncekic, Esra Alis, Halil Istanbul Aydin Univ Fac Med Dept Gen Surg Istanbul Turkiye Univ Calif Irvine Gavin Herbert Eye Inst Dept Ophthalmol Irvine CA USA Istanbul Aydin Univ Fac Med Dept Gen Surg Besyol MahAkasya Sok 4 TR-34295 Istanbul Turkiye

Laparoscopic Sleeve Gastrectomy (LSG) is the most common bariatric procedure worldwide. However, the influence of preoperative factors on weight loss outcomes remains incompletely understood. We investigated the effects of preoperative weight, height, and age on total weight loss percentage (%TWL) following LSG using advanced statistical modeling. 2014 LSG patients were analyzed and stratified by preoperative weight (7 categories: <90 kg to > 160 kg) and age (5 groups: 14-25 to >= 56 years). %TWL was calculated at 1 week, 1, 3, 6, and 12 months post-surgery. A generalized additive model (GAM) was used to calculate Adjusted Total Weight Loss percentage (%ATWL), accounting for height and preoperative weight confounding effects. The population (mean age: 38.0 +/- 11.4 years, BMI: 42.9 +/- 8.2 kg/m(2)) showed weight-dependent %TWL at 12 months, from 32.2%+/- 10.0% (< 90 kg) to 39.8%+/- 7.5% (> 160 kg) (p < 0.001). GAM-adjusted %ATWL revealed superior outcomes in younger cohorts. The 14-25 and 26-35 year groups had comparable 12-month %ATWL (38.2% vs. 37.0%, p = 0.222), significantly exceeding older groups (p < 0.001). Early postoperative %ATWL (1-week) was similar across ages (4.6-5.7%), with progressive differentiation at 3, 6, and 12 months. Preoperative weight and age significantly influence LSG weight loss outcomes. Younger patients and those with higher pre-op weights achieved greater 12-month %TWL.

关键词： Laparoscopic sleeve gastrectomy Weight loss outcomes Age-stratified outcomes Preoperative weight generalized additive model

来源：评论

学校读者我要写书评

暂无评论

Relationship between temperature and acute myocardial infarction: a time series study in Xuzhou, China, from 2018 to 2020

引用

BMC PUBLIC HEALTH 2024年第1期24卷 1页

作者： Miao, Hao Bao, Wei Lou, Peian Chen, Peipei Zhang, Pan Chang, Guiqiu Hu, Xiaoqin Zhao, Xinliang Huang, Shuo Yang, Yu Wang, Zhirong Chen, Minglong Li, Chengzong Xuzhou Med Univ Affiliated Hosp Dept Cardiol Xuzhou Peoples R China Xuzhou Ctr Dis Control & Prevent Dept Control & Prevent Chron Noncommunicable Dis Xuzhou Peoples R China Nanjing Med Univ Affiliated Hosp 1 Dept Cardiol Xuzhou Peoples R China

BackgroundIt is widely known that the incidence rate and short-term mortality of acute myocardial infarctions (AMIs) are generally higher during the winter months. The goal of this study was to determine how the temperature of the environment influences fatal acute myocardial infarctions in *** observational study used the daily meteorological data and the data on the cause of death from acute myocardial infarction in Xuzhou from January 1, 2018, to December 31, 2020. After controlling meteorological variables and pollutants, the distributed nonlinear lag model (DLNM) was used to estimate the correlation between temperature and lethal *** total of 27,712 patients with fatal AMI were enrolled. 82.4% were over the age of 65, and 50.9% were men. Relative to the reference temperature (15 degree celsius), the 30-day cumulative RRs of the extremely cold temperature (- 2 degree celsius) for the general population, women, and people aged 65 years and above were 4.66 (95% CI: 1.76, 12.30), 15.29 (95% CI: 3.94, 59.36), and 7.13 (95% CI: 2.50, 20.35), respectively. The 30-day cumulative RRs of the cold temperature (2 degree celsius) for the general population, women, and people aged 65 years and above were 2.55 (1.37, 4.75), 12.78 (2.24, 5.36), and 3.15 (1.61, 6.16), respectively. No statistically significant association was observed between high temperatures and the risk of fatal AMI. The influence of the cold effect (1st and 10th) was at its peak on that day, and the entire cold effect persisted for 30 days. Temperature extremes had an effect on the lag patterns of distinct age and gender *** to this study, the risk of fatal AMI increases significantly in cold weather but not in hot weather. Women above the age of 65 are particularly sensitive to severe weather events. The influence of frigid weather on public health should also be considered.

关键词： Acute myocardial infarction Daily average temperature Extreme temperature Xuzhou generalized additive model

来源：评论

学校读者我要写书评

暂无评论

Predicting Hydrological Drought Conditions of Boryeong Dam Inflow Using Climate Variability in South Korea

引用

KSCE JOURNAL OF CIVIL ENGINEERING 2024年第11期28卷 5384-5395页

作者： Noh, Seonhui Felix, Micah Lourdes Oh, Seungchan Jung, Kwansue Chungnam Natl Univ Dept Civil Engn Daejeon 34134 South Korea Stat Korea Daejeon 35208 South Korea

When a hydrological drought occurs due to a decrease in water storage, there is no choice but to supply limited water. Because this has a devastating impact on the community, it is necessary to identify causes and make predictions for emergency planning. The state of change in dam inflow can be used to confirm hydrological drought conditions using the Standardized Runoff Index (SRI), and meteorological drought and climate variability are used to identify causal relationships. Multiple Linear Regression (MLR) and generalized additive model (GAM) models are developed to predict accumulated hydrological drought for 6, 12, and 24 months in the Boryeong Dam basin, and the Nash-Sutcliffe model efficiency coefficient (NSE) exceeded 0.4, satisfying the suitability criteria. The estimation ability is highest when predicting a 12-month annual drought, and reliability can be further increased by reflecting some climate fluctuations in a non-linear form. The droughts of 6 month and 24 month cumulative scales are significantly influenced by the Western Hemisphere Warm Pool (WHWP) extending from the eastern North Pacific to the North Atlantic and by the Nino 3.4 region in the tropical Pacific. Furthermore, it is anticipated that the drought conditions of the inflow volume to the Boryeong Dam will worsen with increasing sea surface temperatures in both regions.

关键词： Drought index Standardized runoff Index Climate index Non-linear generalized additive model

来源：评论

学校读者我要写书评

暂无评论

From furnace up to freezer:Elevational patterns of plant diversity in Mount Palvar,a semi-arid Irano-Turanian mountain range of southwest Asia

引用

Journal of Mountain Science 2024年第7期21卷 2236-2248页

作者： Atefeh GHORBANALIZADEH Moslem DOOSTMOHAMMADI Kerman *** Iran

Much of the world's biodiversity lies in heterogeneous mountain areas with their diverse *** an example,Iranian montane ranges are highly diverse,particularly in the Irano-Turanian phytogeographical *** plant diversity patterns with increasing elevation is of high significance,not least for conservation *** studied the pattern of species richness,Shannon diversity,endemic richness,endemics ratio,and richness of life forms along a 3900 m elevational transect in Mount Palvar,overlooking the Lut Desert in Southeast *** also analyzed the effect of environmental variables on species turnover along the vertical gradient.A total of 120 vegetation plots(10 m×10 m)were sampled along the elevational transect containing species and environmental *** discover plant diversity pattern along the elevational gradient,generalized additive model(GAM)was ***-metric multidimensional scaling(NMDS)was applied for illustrating the correlation between species composition and environmental *** found hump-shaped pattern for species richness,Shannon diversity,endemic richness,and species richness of different life forms,but a monotonic increasing pattern for ratio of endemic species from low to high *** study confirms the humped pattern of species richness peaking at intermediate elevations along a complete elevational gradient in a semi-arid *** monotonic increase of endemics ratio with elevation in our area as a case study is consistent with global increase of endemism with *** to our results,temperature and precipitation are two important climatic variables that drive elevational plant diversity,particularly in seasonally dry *** study suggests that effective conservation and management are needed for this low latitude mountain area along with calling for long-term monitoring for species redistribution.

关键词： Elevational gradient Biodiversity Endemic generalized additive model Hump-shaped pattern Irano-Turanian region

来源：评论

学校读者我要写书评

暂无评论

Investigating the differences in driving mechanisms for phytoplankton community composition under various human disturbances in cold regions

引用

JOURNAL OF CLEANER PRODUCTION 2024年 461卷

作者： Zhang, Yongxin Yu, Hongxian Liu, Jiamin Guo, Yao Northeast Forestry Univ Coll Wildlife & Protected Area Harbin 150040 Peoples R China

In river ecosystems, phytoplankton are essential components, and this study delves into their response to critical environmental indicators. We analyzed the spatiotemporal variations of phytoplankton diversity in cold regions, employing techniques such as Principal Component Analysis (PCA), Spearman correlation coefficient, and generalized additive model (GAM) to unveil the critical environmental factors influencing phytoplankton diversity and habitat suitability under varying degrees of human interference. With 37 monitoring stations across two cold region rivers, phytoplankton and water bodies were monitored in spring, summer, and autumn, resulting in the collection and analysis of 111 phytoplankton samples and 13 environmental indicators at each station. By identifying critical water quality indicators and exploring nonlinear relationships, the study revealed intricate interactions between phytoplankton diversity and environmental factors. Our findings suggest that overall phytoplankton species diversity is lower in rivers with high human interference, with turbidity, NH4+-N, chlorophyll-a, and total phosphorus (TP) deemed critical factors. Conversely, chlorophyll-a, NH4+-N, and electrical conductivity (EC) were identified as important factors in rivers with lower human interference, indicating differences in phytoplankton driving mechanisms between the two rivers. These insights provide valuable references for the sustainable development and effective assessment of cold region river ecosystems in the Anthropocene.

关键词： Cold regions Human interference Phytoplankton Principal component analysis generalized additive model

来源：评论

学校读者我要写书评

暂无评论

Identification of the optimal ground motion intensity measure and input parameters for assessing liquefaction-induced lateral spreading based on the generalized additive method

引用

ACTA GEOTECHNICA 2025年 1-17页

作者： Hu, Jilei Xiong, Bin Pirhadi, Nima China Three Gorges Univ Key Lab Geol Hazards Three Gorges Reservoir Area Minist Educ Yichang 443002 Hubei Peoples R China China Three Gorges Univ Coll Civil Engn & Architecture Yichang 443002 Hubei Peoples R China Mesa Grp Co 53 Gen Holmes Dr Brighton Le Sands NSW 2216 Australia

Seismic intensity measures (IMs) play an important role in predicting liquefaction-induced lateral spreading. Many studies identified the optimal IMs for estimating lateral spreading without considering soil and topography parameters, and their findings are based on numerical simulation. These inadequate considerations may lead to impractical and incomplete results. In this paper, therefore, a large amount of real historical data containing multiple factors is collected, in which abnormal or inappropriate data are removed. Thirty-one IMs are calculated using the bidirectional ground motion records from historical earthquake records. Based on historical field data and the corresponding 31 IMs, the optimal IM is identified according to some criteria considering soil and topography parameters including correlation, efficiency, proficiency, and sufficiency analysis. The results show that the composite acceleration intensity I-a satisfies the four criteria. Additionally, the key input parameters (including I-a) affecting lateral spreading were analyzed using the generalized additive model (GAM). The average fine content and mean grain size are proposed to be removed in the construction of models, which could significantly reduce testing costs and be more conducive to engineering applications. The proposed GAM with four input parameters, I-a, T-15 (cumulative layers thickness with (N-1)(60) < 15), S (Slope), and W (free face radio), performs the best after comparing with other machine learning methods and existing empirical models. A flowchart of GAM usage was provided to the engineers.

关键词： Data cleaning generalized additive model Lateral spreading Optimal intensity measure Probabilistic earthquake demand analysis

来源：评论

学校读者我要写书评

暂无评论

Relationships between site index modeling of crimean juniper and habitat factors

KUWAIT JOURNAL OF SCIENCE

引用

KUWAIT JOURNAL OF SCIENCE 2025年第1期52卷

作者： Kuzugudenli, Emre Ozkan, Kursad Isparta Appl Sci Univ Yenisarbademli Vocat Sch Dept Forestry Isparta Turkiye Isparta Appl Sci Univ Fac Forestry Dept Forest Engn Isparta Turkiye

The aim of this study is to examine the relationships between height growth and some site factors of Crimean juniper in southwestern Anatolia. The data was collected from 130 sample plots selected from 10 districts in western Anatolia. The age and height of the Crimean juniper were measured in each sample plot. Surface soil samples collected from each sample plot were analyzed for pH, organic matter, carbonate content, texture, stoniness, available water capacity, wilting point, and field capacity. All site index values were calculated at a standard age of 100 years old. Spearman and Pearson correlation analyses were used to determine the relationships between plus tree and site factors. According to Spearman's correlation analysis, the site index showed a negative relationship with limestone. According to the results of the Pearson correlation analysis, the numerical variables LATTUD, SLOPE, SURSTON, and HINDEX had a 1% relationship with the site index, and RINDEX had a 5% relationship. Once the binary relationships had been determined, the multivariate relationships were modelled using generalized additive models. The best site index model was obtained using a generalized additive model 1 (R = 0.63), including latitude, longitude, altitude, slope, and stoniness.

关键词： Height growth Habitat characteristics generalized additive model

来源：评论

学校读者我要写书评

暂无评论

Linking summer nutrition to behavior and performance of black-tailed deer

引用

JOURNAL OF WILDLIFE MANAGEMENT 2025年第1期89卷

作者： Lopez, Katrina K. Huggler, Katey S. Jackson, DeWaine H. Shipley, Lisa A. Long, Ryan A. Univ Idaho Dept Fish & Wildlife Sci Moscow ID 83844 USA Oregon Dept Fish & Wildlife 4192 N Umpqua Highway Roseburg OR 97470 USA Washington State Univ Sch Environm Pullman WA 99164 USA

Many large-herbivore populations are regulated at least in part by bottom-up forces, and thus relationships between herbivores and their habitat are of fundamental importance to wildlife managers. Variation in nutritional resources-and how herbivores respond to that variation-influences rates of nutrient intake, which directly affect nutritional condition, pregnancy rates, timing of parturition, offspring birth mass, and survival. Accordingly, nutrition-focused research holds great potential for uncovering the mechanisms that govern population performance of large herbivores and for assessing the nature and magnitude of bottom-up limitations. We quantified relationships between the foodscape (i.e., spatiotemporal variation in forage quality and abundance) in southwestern Oregon, USA, and black-tailed deer (Odocoileus hemionus columbianus) behavior and performance, with a focus on the influence of maternal nutrition on fawn survival. We hypothesized that black-tailed deer performance (i.e., fawn birth mass and survival) is influenced by the availability of high-quality forage during spring and summer and patterns of foodscape use exhibited by individual deer. From 2016-2023 we monitored movement and survival of adult female black-tailed deer and their offspring. We also conducted intensive vegetation sampling and used generalized additive modeling to map the foodscape available to deer in spring and summer. Suitable forage biomass (i.e., maximum biomass of forage that together exceeded quality thresholds for supporting one fawn) was highly variable across space and time, and our top foodscape model explained 70% of the variation in suitable biomass (adjusted R2 = 0.70). We observed a strong, positive relationship between use of the foodscape by maternal females prior to parturition and fawn birth mass. Although maternal foodscape use after parturition did not influence the probability of fawn survival, survival increased with increasing birth mass. These results sugg

关键词： bottom-up population regulation digestible energy digestible protein fawns foodscape generalized additive model habitat use parturition suitable forage biomass survival analysis

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：