19,458 results match your criteria influence temporal

Spatial autocorrelation, influencing factors and temporal distribution of the construction and demolition waste disposal industry.

Waste Manag 2021 May 1;127:158-167. Epub 2021 May 1.

School of Management Engineering, Shandong Jianzhu University, PR China. Electronic address:

The construction and demolition waste disposal industry plays a vital role in improving the utilisation rate of construction and demolition waste worldwide, however, too little work has been devoted to the industrial economic analysis. To explore the economic pattern and promote the development of the construction and demolition waste disposal industry, the spatial autocorrelation and influencing factors were analysed, and a temporal development process was evaluated. Spatial measurement results show that the spatial autocorrelation of the construction and demolition waste disposal industry is significant at a 1% level. Read More

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Optically Guided Pyroelectric Manipulation of Water Droplet on a Superhydrophobic Surface.

ACS Appl Mater Interfaces 2021 May 4. Epub 2021 May 4.

Institute of Novel Semiconductors, State Key Laboratory of Crystal Materials, Shandong University, 27 South Shanda Road, Jinan, Shandong 250100, P. R. China.

Controlled droplet manipulation by light has tremendous technological potential. We report here a method based on photothermally induced pyroelectric effects that enables manipulation and maneuvering of a water droplet on a superhydrophobic surface fabricated on lithium tantalite (LiTaO). In particular, we demonstrate that the pyroelectric charge distribution has an essential role in this process. Read More

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Two hundred years of zooplankton vertical migration research.

Biol Rev Camb Philos Soc 2021 May 4. Epub 2021 May 4.

Faculty of Biosciences and Aquaculture, Nord University, 8049, Bodø, Norway.

Vertical migration is a geographically and taxonomically widespread behaviour among zooplankton that spans across diel and seasonal timescales. The shorter-term diel vertical migration (DVM) has a periodicity of up to 1 day and was first described by the French naturalist Georges Cuvier in 1817. In 1888, the German marine biologist Carl Chun described the longer-term seasonal vertical migration (SVM), which has a periodicity of ca. Read More

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Three-dimensional gradient and spin-echo readout for time-encoded pseudo-continuous arterial spin labeling: Influence of segmentation factor and flow compensation.

Magn Reson Med 2021 May 4. Epub 2021 May 4.

C.J. Gorter Center for High Field MRI, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands.

Purpose: To monitor the complete passage of the labeled blood through the vascular tree into tissue and improve the quantification of ASL maps, we evaluated the effect of 3D gradient and spin-echo (GRASE) readout segments on temporal SNR (tSNR) and image blurriness for time-encoded pseudo-continuous arterial spin labeling and the effect of flow-compensation gradients on the presence of intravascular signal.

Methods: Fifteen volunteers were scanned using time-encoded pCASL with 2D EPI and single-segment, two-segments, and three-segments 3D-GRASE readouts with first-order flow compensation (FC) gradients. Two-segments 3D-GRASE scans were acquired with 25%, 50%, 75%, and 100% of full first-order FC. Read More

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Diagnoses of Chronic Health Conditions and Change in Subjective Age: The Moderating Role of Chronological Age.

Gerontologist 2021 May 4. Epub 2021 May 4.

Department of Gerontology, John W. McCormack Graduate School of Policy & Global Studies, University of Massachusetts Boston, Boston, Massachusetts, USA.

Background And Objectives: Health is a predictor of subjective age, and although inconclusive, the strength of this association is not uniform across different age groups. This study investigates if new diagnoses of chronic health conditions are associated with a change in subjective age and if chronological age moderates this relationship.

Research Design And Methods: Using data from the Health and Retirement Study, residualized change regression analysis was performed for a sample of 5,158 respondents older than 50 years to examine their subjective age in 2014 relative to that reported in 2010. Read More

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Multimodal deep learning from satellite and street-level imagery for measuring income, overcrowding, and environmental deprivation in urban areas.

Remote Sens Environ 2021 May;257:112339

MRC Centre for Environment and Health, School of Public Health, Imperial College London, London, UK.

Data collected at large scale and low cost (e.g. satellite and street level imagery) have the potential to substantially improve resolution, spatial coverage, and temporal frequency of measurement of urban inequalities. Read More

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Spatiotemporal analysis of traffic congestion, air pollution, and exposure vulnerability in Tanzania.

Sci Total Environ 2021 Apr 16:147114. Epub 2021 Apr 16.

World Bank, USA.

Using new satellite data from the European Space Agency's Sentinel-5P system, this article investigates the spatial and temporal dynamics of vehicular traffic congestion, air pollution, and the distributional impacts on vulnerable populations in Dar es Salaam, Tanzania. The metro region's rapid growth in vehicle traffic exceeds road network capacity, generating congestion, transport delays, and air pollution from excess fuel use. Dangerously high pollution levels from tailpipe emissions put the health of vulnerable residents at risk, calling for the need to adopt continuous air-quality monitoring and effective pollution control. Read More

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Click evoked middle ear muscle reflex: Spectral and temporal aspects.

J Acoust Soc Am 2021 Apr;149(4):2628

Department of Communication Sciences and Disorders, University of Iowa, Iowa City, Iowa 52252, USA.

This study describes a time series-based method of middle ear muscle reflex (MEMR) detection using bilateral clicks. Although many methods can detect changes in the otoacoustic emissions evoking stimulus to monitor the MEMR, they do not discriminate between true MEMR-mediated vs artifactual changes in the stimulus. We measured MEMR in 20 young clinically normal hearing individuals using 1-s-long click trains presented at six levels (65 to 95 dB peak-to-peak sound pressure level in 6 dB steps). Read More

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Record of trace organic contaminants in a river sediment core: From historical wastewater management to historical use.

Sci Total Environ 2021 Jun 6;773:145694. Epub 2021 Feb 6.

METIS, Sorbonne Université, EPHE, Université PSL, CNRS, IPSL, 75005 Paris, France.

Some trace organic contaminants (TrOCs) can be considered as ubiquitous contaminants since the 1950s, and the study of their historical distribution within river sediments allows us to better understand the temporal variation of the chemical quality of sediments, and make assumptions about the most insightful forcings impacting these distributions. In this study, the occurrence of 41 TrOCs of various classes (i.e. Read More

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Deep learning-based downscaling of tropospheric nitrogen dioxide using ground-level and satellite observations.

Manzhu Yu Qian Liu

Sci Total Environ 2021 Jun 6;773:145145. Epub 2021 Feb 6.

NSF Spatiotemporal Innovation Center, Department of Geography and GeoInformation Science, George Mason University, USA.

Air quality is one of the major issues within an urban area that affect people's living environment and health conditions. Existing observations are not adequate to provide a spatiotemporally comprehensive air quality information for vulnerable populations to plan ahead. Launched in 2017, TROPOspheric Monitoring Instrument (TROPOMI) provides a high spatial resolution (~5 km) tropospheric air quality measurement that captures the spatial variability of air pollution, but still limited by its daily overpass in the temporal dimension and relatively short historical records. Read More

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Health risks from groundwater arsenic on residents in northern China coal-rich region.

Sci Total Environ 2021 Jun 2;773:145003. Epub 2021 Feb 2.

State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. Electronic address:

Shanxi Province of northern China is a typical mining concentration and arsenism area. Years of mining activities have resulted in serious regional groundwater problems in Shanxi. Therefore, it is of great significance to know the health risk of groundwater arsenic on residents under the background of mining activities. Read More

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Compositional and functional responses of bacterial community to titanium dioxide nanoparticles varied with soil heterogeneity and exposure duration.

Sci Total Environ 2021 Jun 4;773:144895. Epub 2021 Feb 4.

Institute of Environmental Sciences (CML), Leiden University, P.O. Box 9518, 2300 RA Leiden, the Netherlands.

Titanium dioxide nanoparticles (TiO NPs) are widely used as nano-agrochemicals. In this study we investigated the influence of soil heterogeneity on bacterial communities exposed to TiO NPs over time. Clay and sandy soils with low- and high-organic matter contents were exposed to environmentally relevant concentration of TiO NPs (1 mg/kg) and soil bacterial communities were sampled after short-term (15 days) and long-term exposure (60 days). Read More

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Glucocorticoid-mediated changes in male green treefrog vocalizations alter attractiveness to females.

Integr Comp Biol 2021 May 3. Epub 2021 May 3.

University of Mississippi, Department of Biology, University MS 38677.

Adrenal glucocorticoids are increasingly recognized as important modulators of male courtship signals, suggesting that circulating levels of these steroids can play a central role in sexual selection. However, few studies have examined whether glucocorticoid-mediated effects on male sexual signals actually impact mate choice by females. Here, we examine how corticosterone (CORT)-mediated changes in the vocalizations of male green treefrogs, Dryophytes cinereus, influence attractiveness to females. Read More

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Perfluoroalkyl substances in drinking water sources along the Yangtze River in Jiangsu Province, China: Human health and ecological risk assessment.

Ecotoxicol Environ Saf 2021 Apr 30;218:112289. Epub 2021 Apr 30.

Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China; Key Laboratory of Pesticide Environmental Assessment and Pollution Control, Ministry of Ecology and Environment, Nanjing 210042, China. Electronic address:

Perfluoroalkyl substances (PFASs) in source water is of growing concern for its adverse effects on human health and wildlife as well. The Yangtze River is the vital drinking water source in Jiangsu Province of China, but little attention has been paid on PFASs. The occurrence, spatial distribution and temporal trend of PFASs in 21 water sources along the Jiangsu section of the Yangtze River was investigated with sampling from 2018 to 2020. Read More

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A data-driven framework for spatiotemporal characteristics, complexity dynamics, and environmental risk evaluation of river water quality.

Sci Total Environ 2021 Apr 16;785:147134. Epub 2021 Apr 16.

College of Water Sciences, Beijing Normal University, Beijing 100875, China; Chinese Research Academy of Environmental Sciences, Beijing 100012, China.

To evaluate the evolution of river water quality in a changing environment, measuring the objective water quality is critical for understanding the rules of river water pollution. Based on the sample entropy theory and a nonlinear statistical method, this study aims to identify the spatiotemporal dynamics of water quality and its complexity in the Yangtze River basin using time series data, to separate the contributions of human activity and climate change to water quality, and to establish a data-driven risk assessment framework for the spatial (potential risk) and temporal (direct risk) aspects of water pollution. The results demonstrate that the spatiotemporal dynamics of water quality and sample entropy in each monitoring section are closely related to the characteristics of the corresponding location. Read More

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Distinct patterns of abundant and rare subcommunities in paddy soil during wetting-drying cycles.

Sci Total Environ 2021 Apr 24;785:147298. Epub 2021 Apr 24.

Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, Xiamen, Fujian 361021, China. Electronic address:

Wetting-drying cycles typically result in a wide range of soil moistures and redox potentials (Eh) that significantly affect the soil microbial community. Although numerous studies have addressed the effects of soil moisture on soil microbial community structure and composition, the response of active microbes to the fluctuation in soil Eh is still largely unknown; this is especially true for the ecological roles of abundant and rare taxa. To explore the dynamics of active and total microbial communities in response to wetting-drying cycles, we conducted a microcosm experiment based on three wetting-drying cycles and 16S rRNA transcript (active) and 16S rRNA gene (total) amplicon sequencing. Read More

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A Programmable Toolkit to Dynamically Signal Cells Using Peptide Strand Displacement.

ACS Appl Mater Interfaces 2021 May 3. Epub 2021 May 3.

Department of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States.

The native extracellular matrix communicates and interacts with cells by dynamically displaying signals to control their behavior. Mimicking this dynamic environment is essential in order to unravel how cell-matrix interactions guide cell fate. Here, we present a synthetic platform for the temporal display of cell-adhesive signals using coiled-coil peptides. Read More

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Narrative inquiry on early-career teachers' stories of in caring for students in low-resource urban public schools.

Int J Qual Stud Health Well-being 2021 Dec;16(1):1917881

Department of Psychology , Ateneo De Manila University, Quezon City, Philippines.

Purpose: In low-resource public schools, these costs may be amplified for early career teachers who help students bear increasingly complex burdens despite lack of resources and specialized support. However, there are limited studies on how care work and its costs are experienced by early-career Filipino public school teachers in low-resource contexts. Hence, the purpose of this study is to examine teachers' stories of caring for burdened students using an integrative and critical narrative inquiry based on Clandinin's narrative framework and Decenteceo's cultural story-model of (i. Read More

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December 2021

Top predators govern multitrophic diversity effects in tritrophic food webs.

Ecology 2021 May 3:e03379. Epub 2021 May 3.

Institute of Biochemistry and Biology, University of Potsdam, Am Neuen Palais 10, 14469, Potsdam, Germany.

It is well known that functional diversity strongly affects ecosystem functioning. However, even in rather simple model communities consisting of only two or, at best, three trophic levels, the relationship between multitrophic functional diversity and ecosystem functioning appears difficult to generalize, due to its high contex-tuality. In this study, we considered several differently structured tritrophic food webs, in which the amount of functional diversity was varied independently on each trophic level. Read More

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Quantifying the Spatiotemporal Influence of Acute Myocardial Ischemia on Volumetric Conduction Speeds.

Comput Cardiol (2010) 2020 Sep 10;47. Epub 2021 Feb 10.

Scientific Computing and Imaging Institute, University of Utah, SLC, UT, USA.

Acute myocardial ischemia compromises the ordered electrical activation of the heart, however, because of sampling limitations, volumetric changes in activation have not been measured. We used a large-animal experimental model and high-resolution volumetric mapping to study the effects of ischemia on conduction speeds (CS) throughout the myocardium. We estimated CS and electrocardiographic changes (ST segments) and evaluated the spatial and temporal correlations between them across 11 controlled episodes. Read More

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September 2020

Glacier changes on the Nanga Parbat 1856-2020: A multi-source retrospective analysis.

Sci Total Environ 2021 Apr 24;785:147321. Epub 2021 Apr 24.

Department of Geography, South Asia Institute, Heidelberg University, Heidelberg 69115, Germany.

Contemporary changes in the Himalayan cryosphere are an important concern in the global climate change debate. In this context, the glaciers of the Upper Indus Basin (UIB) deserve special attention because of their importance for freshwater supply in the mountain valleys and the adjoining lowlands. However, detailed long-term glacier monitoring studies are rare due to the lack of historical data with adequate spatial and temporal resolution. Read More

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Dynamic task-linked switching between brain networks - A tri-network perspective.

Brain Cogn 2021 Apr 28;151:105725. Epub 2021 Apr 28.

Neuroscience Graduate Program, McMaster University, Hamilton, ON, Canada; Department of Psychology Neuroscience & Behaviour, McMaster University, Hamilton, ON, Canada; Vector Institute for Artificial Intelligence, Toronto, ON, Canada; Centre for Advanced Research in Experimental and Applied Linguistics (ARiEAL), Department of Linguistics and Languages, McMaster University, Hamilton, ON, Canada; Rotman Research Institute, Baycrest Hospital, Toronto, ON, Canada. Electronic address:

The highly influential tri-network model proposed by Menon integrates 3 key intrinsic brain networks - the central executive network (CEN), the salience network (SN), and the default mode network (DMN), into a single cohesive model underlying normal behaviour and cognition. A large body of evidence suggests that abnormal intra- and inter- network connectivity between these three networks underlies the various behavioural and cognitive dysfunctions observed in patients with neuropsychiatric conditions such as PTSD and depression. An important prediction of the tri-network model is that the DMN and CEN networks are anti-correlated under the control of the SN, such that if a task engages one of the two, the SN inhibits the activation of the other. Read More

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Does high risk mean high loss: Evidence from flood disaster in southern China.

Sci Total Environ 2021 Apr 16;785:147127. Epub 2021 Apr 16.

Institutes of Science and Development, Chinese Academy of Sciences, Beijing 100190, PR China. Electronic address:

Southern China has suffered from flood disasters for over sixty years, which results in tremendous socio-economic loss. With the development of economy and the improvement of disaster reduction, both the exposure and potential loss of flood disaster are increasing. However, previous studies only focus on risk assessment, few has examined the comparison of potential risk and the actual losses caused by it. Read More

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Spatial characteristics and influencing factors of risk perception of haze in China: The case study of publishing online comments about haze news on Sina.

Sci Total Environ 2021 Apr 22;785:147236. Epub 2021 Apr 22.

College of Environment and Planning/Key Research Institute of Yellow River Civilization and Sustainable Development & Collaborative Innovation Center on Yellow River Civilization of Henan Province, Henan University, Kaifeng 475004, China; Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education/National Demonstration Center for Environment and Planning, Henan University, Kaifeng 475004, China; Henan Key Laboratory of Earth System Observation and Modeling, Henan University, Kaifeng 475004, China. Electronic address:

Haze has become an important factor to harm people's health. In the face of the harm of haze, people express risk perception behavior through publishing online comments on haze news. To a certain extent, online comments affect the government's decision to deal with haze. Read More

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Influence of uric acid on the correlation between waist circumference and triglyceride glucose index: an analysis from CHARLS.

Lipids Health Dis 2021 Apr 30;20(1):42. Epub 2021 Apr 30.

National Office for Maternal and Child Health Surveillance of China, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, 610041, P. R. China.

Background: Waist circumference (WC) and uric acid (UA) are significantly related. Still, their temporal sequence and how the sequence works on future risk of triglyceride glucose (TyG) are unknown, especially in the Chinese population.

Methods: Cross-lagged panel model was used to analyze the reciprocal, longitudinal relationships among a set of interrelated variables. Read More

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Spatial and temporal changes of dissolved oxygen in waters of the Pajarales complex, Ciénaga Grande de Santa Marta: Two decades of monitoring.

Sci Total Environ 2021 Apr 22;785:147203. Epub 2021 Apr 22.

Institute for Marine and Coastal Research José Benito Vives de Andréis, Santa Marta, Colombia.

Ciénaga Grande de Santa Marta lagoon complex, located in the Colombian Caribbean, is a highly degraded estuarine system, in which massive deaths of organisms have occurred since the 1990s, causing socioeconomic effects on the inhabitants, who are mostly artisanal fishermen. These deaths have been attributed to the deoxygenation of the water at night, as a result of the eutrophication of the system. To understand the variability of dissolved oxygen and its relationship with other water quality variables, the monthly time series collected between 2001 and 2019, in seven stations of the Pajarales Complex (western side of the estuarine complex), were analyzed. Read More

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Traditional and novel organophosphate esters (OPEs) in PM of a megacity, southern China: Spatioseasonal variations, sources, and influencing factors.

Environ Pollut 2021 Apr 22;284:117208. Epub 2021 Apr 22.

State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.

Organophosphate esters (OPEs) are ubiquitous contaminants in the environment, whereas their atmospheric processes and fate are poorly understood. The present study revealed the spatial heterogeneity and seasonal variations of traditional and novel OPEs in PM (particulate matter with diameters < 2.5 μm) across a megacity (including residential areas and potential source sites) in South China. Read More

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Clinical outcomes and temporal changes in the range of motion following superior capsular reconstruction for irreparable rotator cuff tears: Comparison based on the Hamada classification, with or without shoulder pseudoparalysis, and status of the subscapularis tendon.

J Shoulder Elbow Surg 2021 Apr 27. Epub 2021 Apr 27.

Department of Orthopedics Kurashiki Central Hospital 1-1-1 Miwa, Kurashiki, Okayama, 710-8602 Japan.

Background: Superior capsular reconstruction has recently gained popularity as a surgical solution for patients with massive rotator cuff tears or shoulder pseudoparalysis. Good clinical outcomes have been reported after superior capsular reconstruction; however, the factors that influence its clinical outcomes remain unclear. Therefore, in this study, we aimed to clarify the factors influencing postoperative outcomes after superior capsular reconstruction using tensor fascia lata graft; for which, we evaluated the Hamada grade, patients with or without shoulder pseudoparalysis, and status of the subscapularis tendon. Read More

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Partnership dynamics in mathematical models and implications for representation of sexually transmitted infections: a review.

Ann Epidemiol 2021 Apr 27. Epub 2021 Apr 27.

Division of Health Policy and Management, University of Minnesota, 420 Delaware St. SE, MMC 729 Mayo, Minneapolis, MN 55455 USA. Electronic address:

Mathematical models of sexually transmitted disease (STI) are increasingly relied on to inform policy, practice, and resource allocation. Because STI transmission requires sexual contact between two or more people, a model's ability to represent the dynamics of sexual partnerships can influence the validity of findings. This ability is to a large extent constrained by the model type, as different modeling frameworks vary in their capability to capture patterns of sexual contact at individual, partnership, and network levels. Read More

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Increased synthesis of pro-inflammatory cytokines in C9ORF72 patients.

Amyotroph Lateral Scler Frontotemporal Degener 2021 Apr 30:1-11. Epub 2021 Apr 30.

Department of Neurology, Johns Hopkins University, Baltimore, MD, USA.

C9ORF72 hexanucleotide expansion is the most common genetic cause of familial amyotrophic lateral sclerosis (ALS)/fronto-temporal dementia (FTD) disease spectrum. Even though three major mechanisms of disease pathogenesis have been proposed, we lack detailed understanding of the factors that influence disease onset and progression. We sought to characterize cerebrospinal fluid and sera of C9ORF72 patients via a multiplex assay of 41 chemokines and cytokines in comparison to neurological controls and sporadic ALS patients. Read More

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