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https://www.readbyqxmd.com/read/28429250/exploring-geospatial-techniques-for-spatiotemporal-change-detection-in-land-cover-dynamics-along-soan-river-pakistan
#1
Hafsa Bashir, Sheikh Saeed Ahmad
Classification of land cover dynamics via satellite imagery has played indispensible services in developing effective management strategies for evaluation and management of water resources. The present study employed geospatial techniques, i.e., integrated GIS and remote sensing for effectual land change study. Hybrid classification approach was applied using ERDAS Imagine 11 to detect changes in land cover dynamics using satellite imagery of Landsat 4, 5 TM, Landsat 7 ETM, and Landsat 8 OLI for the years of 1992, 2002, and 2015, respectively...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28423108/-potential-health-risks-from-consumption-of-water-with-arsenic-in-colima-mexico
#2
Oliver Mendoza-Cano, Ramón Alberto Sánchez-Piña, Julián Barrón-Quintana, Herguin Benjamin Cuevas-Arellano, Pilar Escalante-Minakata, Ramón Solano-Barajas
Objective: To estimate potential health risks due to chronic ingestion of arsenic from groundwater in Colima, Mexico. Materials and methods: Samples were randomly taken in 36 wells from 10 local aquifers. Analysis was performed by ICP-OES following international standards. Geostatistical interpolation was performed with ArcGIS, implementing a model weighting inverse distance to estimate arsenic routes of exposure and consumption on each locality. The Hazard Quotient Ratio (HQ) and carcinogenic risk (R) for As were estimated...
January 2017: Salud Pública de México
https://www.readbyqxmd.com/read/28422709/preterm-birth-among-women-living-within-600-meters-of-high-voltage-overhead-power-lines-a-case-control-study
#3
Taktom Sadeghi, Amirmasoud Ahmadi, Maryam Javadian, Sayyed Asghar Gholamian, Mouloud Agajani Delavar, Sedigheh Esmailzadeh, Bahare Ahmadi, Mozhgan Sadat Hassanpour Hadighi
AIM: The issue of preterm birth due to exposure to magnetic fields from power lines is unclear. Exposure to electromagnetic field in uterus has been hypothesized as possible preterm birth. The aim of the present study was to determine whether living closer to high voltage power lines increased the risk of preterm labor. METHODS: In a nested case-control study, 135 cases of singleton live spontaneous preterm birth in Rohani hospital, Babol, Iran, during the period between 2013 and 2014 were studied...
April 18, 2017: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
https://www.readbyqxmd.com/read/28405753/relationships-between-land-use-and-stream-nutrient-concentrations-in-a-highly-urbanized-tropical-region-of-brazil-thresholds-and-riparian-zones
#4
F Tromboni, W K Dodds
Nutrient enrichment in streams due to land use is increasing globally, reducing water quality and causing eutrophication of downstream fresh and coastal waters. In temperate developed countries, the intensive use of fertilizers in agriculture is a main driver of increasing nutrient concentrations, but high levels and fast rates of urbanization can be a predominant issue in some areas of the developing world. We investigated land use in the highly urbanized tropical State of Rio de Janeiro, Brazil. We collected total nitrogen, total phosphorus, and inorganic nutrient data from 35 independent watersheds distributed across the State and characterized land use at a riparian and entire watershed scales upstream from each sample station, using ArcGIS...
April 12, 2017: Environmental Management
https://www.readbyqxmd.com/read/28371747/nitrogen-source-inventory-and-loading-tool-an-integrated-approach-toward-restoration-of-water-quality-impaired-karst-springs
#5
Kirstin T Eller, Brian G Katz
Nitrogen (N) from anthropogenic sources has contaminated groundwater used as drinking water in addition to impairing water quality and ecosystem health of karst springs. The Nitrogen Source Inventory and Loading Tool (NSILT) was developed as an ArcGIS and spreadsheet-based approach that provides spatial estimates of current nitrogen (N) inputs to the land surface and loads to groundwater from nonpoint and point sources within the groundwater contributing area. The NSILT involves a three-step approach where local and regional land use practices and N sources are evaluated to: (1) estimate N input to the land surface, (2) quantify subsurface environmental attenuation, and (3) assess regional recharge to the aquifer...
March 31, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28301877/using-landscape-habitat-associations-to-prioritize-areas-of-conservation-action-for-terrestrial-birds
#6
Tyler M Harms, Kevin T Murphy, Xiaodan Lyu, Shane S Patterson, Karen E Kinkead, Stephen J Dinsmore, Paul W Frese
Predicting species distributions has long been a valuable tool to plan and focus efforts for biodiversity conservation, particularly because such an approach allows researchers and managers to evaluate species distribution changes in response to various threats. Utilizing data from a long-term monitoring program and land cover data sets, we modeled the probability of occupancy and colonization for 38 bird Species of Greatest Conservation Need (SGCN) in the robust design occupancy modeling framework, and used results from the best models to predict occupancy and colonization on the Iowa landscape...
2017: PloS One
https://www.readbyqxmd.com/read/28271670/nest-survival-rate-of-reeves-s-pheasant-syrmaticus-reevesii-based-on-artificial-nest-experiments
#7
Xu Luo, Yu-Ze Zhao, Jing Ma, Jian-Qiang Li, Ji-Liang Xu
To explore the nest survival rate of Reeves's pheasant(Syrmaticus reevesii) and the nest-site factors that affect it, we conducted artificial nest experiments with reference to natural nests at Dongzhai National Nature Reserve(DNNR), Henan Province and Pingjingguan, Hubei Province from April to June 2014 simulating the situation in its early and later breeding season. We also determined distance characteristics of the nest sites by ArcGIS 10.0. Nest survival models were constructed in Program MARK for data analysis...
January 18, 2017: Zoological Research
https://www.readbyqxmd.com/read/28258753/spatial-and-temporal-evolution-of-climatic-factors-and-its-impacts-on-potential-evapotranspiration-in-loess-plateau-of-northern-shaanxi-china
#8
C Li, P T Wu, X L Li, T W Zhou, S K Sun, Y B Wang, X B Luan, X Yu
Agriculture is very sensitive to climate change, and correct forecasting of climate change is a great help to accurate allocation of irrigation water. The use of irrigation water is influenced by crop water demand and precipitation. Potential evapotranspiration (ET0) is a measure of the ability of the atmosphere to remove water from the surface through the processes of evaporation and transpiration, assuming no control on water supply. It plays an important role in assessing crop water requirements, regional dry-wet conditions, and other factors of water resource management...
March 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28257402/poorly-controlled-diabetes-in-new-york-city-mapping-high-density-neighborhoods
#9
Winfred Y Wu, Qun Jiang, Steve S Di Lonardo
OBJECTIVE: To identify geographic areas in New York City (NYC) for implementing programming focused on reducing the burden attributed to poor glycemic control and improving the health of New Yorkers. DESIGN: We geocoded addresses of NYC residents in the NYC Hemoglobin A1c (HbA1C) Registry with high (>9%) HbA1c test values from 2011 to 2013 on an NYC base map. The ArcGIS point density spatial analysis tool was applied to create a map of NYC residents with diabetes in poor glycemic control...
March 1, 2017: Journal of Public Health Management and Practice: JPHMP
https://www.readbyqxmd.com/read/28221822/clinical-characteristics-and-spatial-distribution-of-visceral-leishmaniasis-in-children-in-s%C3%A3-o-paulo-state-an-emerging-focus-of-visceral-leishmaniasis-in-brazil
#10
Patricia Rodrigues Naufal Spir, Luiz Euribel Prestes-Carneiro, Elivelton Silva Fonseca, Aline Dayse, Rogério Giuffrida, Lourdes Aparecida Zampieri D'Andrea
BACKGROUND: Visceral leishmaniasis (VL) is an emerging zoonosis, and Brazil harbors about 90% of those infected in Latin America. Since 1998, the disease has been spreading quickly in São Paulo state, and the western region is considered an emerging focus of VL in Brazil. Our aim was to evaluate the clinical characteristics and spatial distribution of VL in children referred to a public tertiary hospital located in the western region of São Paulo state, Brazil. METHODS: Medical records of children up to 18 years of age who were diagnosed with VL between January 2006 and December 2010 were reviewed...
March 2017: Pathogens and Global Health
https://www.readbyqxmd.com/read/28169978/analysis-of-patient-visits-and-collections-after-opening-a-satellite-pediatric-emergency-department
#11
Katherine M Nichols, Kerry Caperell, Keith Cross, Scott Duncan, Ben Foster, Gil Liu, Hank Pritchard, Gary Southard, Ben Shinabery, Brad Sutton, In K Kim
OBJECTIVE: Satellite pediatric emergency departments (PEDs) have emerged as a strategy to increase patient capacity. We sought to determine the impact on patient visits, physician fee collections, and value of emergency department (ED) time at the primary PED after opening a nearby satellite PED. We also illustrate the spatial distribution of patient demographics and overlapping catchment areas for the primary and satellite PEDs using geographical information system. METHODS: A structured, financial retrospective review was conducted...
February 4, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28146171/urban-transmission-of-schistosomiasis-new-epidemiological-situation-in-the-forest-area-of-pernambuco
#12
Elainne Christine de Souza Gomes, Millena Carla da Silva Mesquita, Vitorina Nerivânia Covello Rehn, Wheverton Ricardo Correia do Nascimento, Rodrigo Loyo, Constança Simões Barbosa
Introduction: Schistosomiasis is considered an endemic disease in Vitória de Santo Antão, Pernambuco, a district which has presented both high incidence and prevalence of it for decades. Poor environmental conditions lead to contamination of water sources in rural areas, which are used by the population during daily activities, resulting in typical transmission. Recently, there has been evidence of vector snails in urban areas, which could set a new model for schistosomiasis transmission in this district...
October 2016: Revista Brasileira de Epidemiologia, Brazilian Journal of Epidemiology
https://www.readbyqxmd.com/read/28103294/community-based-entomological-surveillance-reveals-urban-foci-of-chagas-disease-vectors-in-sobral-state-of-cear%C3%A3-northeastern-brazil
#13
Cynara Carvalho Parente, Fernando S M Bezerra, Plutarco I Parente, Raimundo V Dias-Neto, Samanta C C Xavier, Alberto N Ramos, Filipe A Carvalho-Costa, Marli M Lima
BACKGROUND: The aim of this work was to explore the potential risk of vector-borne Chagas disease in urban districts in northeastern Brazil, by analyzing the spatiotemporal distributions and natural infection rates with Trypanosoma cruzi of triatomine species captured in recent years. The main motivation of this work was an acute human case of Chagas disease reported in 2008 in the municipality of Sobral. METHODOLOGY/PRINCIPAL FINDINGS: We analyzed data from community-based entomological surveillance carried out from 2010 to 2014...
2017: PloS One
https://www.readbyqxmd.com/read/28086893/seasonal-variation-in-geographical-access-to-maternal-health-services-in-regions-of-southern-mozambique
#14
Prestige Tatenda Makanga, Nadine Schuurman, Charfudin Sacoor, Helena Edith Boene, Faustino Vilanculo, Marianne Vidler, Laura Magee, Peter von Dadelszen, Esperança Sevene, Khátia Munguambe, Tabassum Firoz
BACKGROUND: Geographic proximity to health facilities is a known determinant of access to maternal care. Methods of quantifying geographical access to care have largely ignored the impact of precipitation and flooding. Further, travel has largely been imagined as unimodal where one transport mode is used for entire journeys to seek care. This study proposes a new approach for modeling potential spatio-temporal access by evaluating the impact of precipitation and floods on access to maternal health services using multiple transport modes, in southern Mozambique...
January 13, 2017: International Journal of Health Geographics
https://www.readbyqxmd.com/read/28079719/feasibility-of-using-hiv-care-continuum-outcomes-to-identify-geographic-areas-for-targeted-hiv-testing
#15
Amanda D Castel, Irene Kuo, Meriam Mikre, Toni Young, Meredith Haddix, Suparna Das, Geoffrey Maugham, Carol Reisen
BACKGROUND: Improved detection and linkage to care of previously undiagnosed HIV infections require innovative approaches to testing. We sought to determine the feasibility of targeted HIV testing in geographic areas, defined by continuum of care parameters, to identify HIV-infected persons needing linkage or engagement in care. METHODS: Using HIV surveillance data from Washington, DC, we identified census tracts that had an HIV prevalence >1% and were either above (higher risk areas-HRAs) or below (lower risk areas-LRAs) the median for 3 indicators: monitored viral load, proportion of persons out of care (OOC), and never in care...
February 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28057140/-spatial-analysis-and-prediction-of-severe-fever-with-thrombocytopenia-syndrome-in-zhejiang-province-2011-2015
#16
H C Wu, X P Xu, C Wu, Q B Lu, Z Y Ding, J F Lin
Objective: To understand the distribution of the severe fever with thrombocytopenia syndrome (SFTS) in Zhejiang province, and predict the incidence and the probability of SFTS outbreak. Methods: Based on the cases of SFTS from 2011-2015, software ArcGIS 10.0 was used to analyze the spatial distribution, Moran's I and Getis-Ord Gi were used to analyze the spatial autocorrelation. The incidence trend was explored by trend surface analysis, and the prediction was made by Kriging interpolation. Results: The incidence of SFTS increased and the distribution expanded in Zhejiang from 2011 to 2015, the seasonal and the demographic characteristics of SFTS were similar to the previous research; there were regional clustering of the cases (P<0...
November 10, 2016: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/27990264/creating-a-driving-profile-for-older-adults-using-gps-devices-and-naturalistic-driving-methodology
#17
Ganesh M Babulal, Cindy M Traub, Mollie Webb, Sarah H Stout, Aaron Addison, David B Carr, Brian R Ott, John C Morris, Catherine M Roe
Background/Objectives: Road tests and driving simulators are most commonly used in research studies and clinical evaluations of older drivers. Our objective was to describe the process and associated challenges in adapting an existing, commercial, off-the-shelf (COTS), in-vehicle device for naturalistic, longitudinal research to better understand daily driving behavior in older drivers. Design: The Azuga G2 Tracking Device (TM) was installed in each participant's vehicle, and we collected data over 5 months (speed, latitude/longitude) every 30-seconds when the vehicle was driven...
2016: F1000Research
https://www.readbyqxmd.com/read/27984248/the-geographic-distribution-of-pediatric-anesthesiologists-relative-to-the-u-s-pediatric-population
#18
Matthew K Muffly, David Medeiros, Tyler M Muffly, Mark A Singleton, Anita Honkanen
BACKGROUND: The geographic relationship between pediatric anesthesiologists and the pediatric population has potentially important clinical and policy implications. In the current study, we describe the geographic distribution of pediatric anesthesiologists relative to the U.S. pediatric population (0-17 years) and a subset of the pediatric population (0-4 years). METHODS: The percentage of the U.S. pediatric population that lives within different driving distances to the nearest pediatric anesthesiologist (0 to 25 miles, >25 to 50 miles, >50 to 100 miles, >100 to 250 miles, and >250 miles) was determined by creating concentric driving distance service areas surrounding pediatric anesthesiologist practice locations...
December 14, 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27973357/flood-prevention-dams-for-arid-regions-at-a-micro-scale-sub-catchment-case-study-tabuk-saudi-arabia
#19
Eyad Abushandi
Unexpected flash flooding is one of the periodic hydrological problems affecting the city of Tabuk in Saudi Arabia. The region has high potential for floods as it suffers high rainfall intensity in a short time and also has high urbanization rates and topographic complexity. Constructing flood prevention dams is one option to solve this problem. A cost-effective design requires a detailed feasibility study and analysis for the selection of suitable sites. The aim of this study was to develop a method for selecting a suitable site for flood protection dams in the Abu Saba'a district, the most affected part of the city of Tabuk during the flash flood in January 2013...
December 2016: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/27968910/spatiotemporal-clusters-of-primary-and-secondary-syphilis-cases-in-south-china-an-observational-study
#20
Ngai Sze Wong, Shujie Huang, Lei Chen, Peizhen Zhao, Joseph D Tucker, Li Gang Yang, Beng Tin Goh, Heping Zheng, Bin Yang
BACKGROUND: Although the overall rate of newly reported primary and secondary syphilis cases in Guangdong Province has been decreasing since 2011, incidence in some cities has increased. Location-based intervention is needed for effective resource allocation. We aimed to understand the geographical variations of syphilis epidemiology and detect possible outbreaks and epidemics at county level by spatiotemporal analyses. METHODS: In this observational study, we collected demographics, residential location, syphilis staging and diagnosis date of all reported primary and secondary syphilis cases in patients diagnosed and living in 21 cities, which were further subcategorised into 126 smaller counties, in Guangdong Province, China, from 2014 to mid-2015...
October 2016: Lancet
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