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Dazhi Fan, Song Wu, Wen Wang, Lihong Xin, Guo Tian, Li Liu, Jinping Feng, Xiaoling Guo, Zhengping Liu
BACKGROUND: Placenta previa is characterized by the abnormal placenta overlying the endocervical os, and it is known as one of the most feared adverse maternal and fetal-neonatal complications in obstetrics. OBJECTIVES: We aimed to obtain overall and regional estimates of placenta previa prevalence among deliveries in Mainland China. METHODS: The research was performed a systematic review, following the Meta-analysis of observational studies in epidemiology (MOOSE) guidelines for systematic reviews of observational studies, and the preferred reporting items for systematic reviews and meta-analysis (PRISMA) statement for reporting systematic reviews and meta-analysis...
October 2016: Medicine (Baltimore)
J J Ibáñez, R Pérez-Gómez, Eric C Brevik, A Cerdà
Many maps (geology, hydrology, soil, vegetation, etc.) are created to inventory natural resources. Each of these resources is mapped using a unique set of criteria, including scales and taxonomies. Past research indicates that comparing results of related maps (e.g., soil and geology maps) may aid in identifying mapping deficiencies. Therefore, this study was undertaken in Almeria Province, Spain to (i) compare the underlying map structures of soil and vegetation maps and (ii) investigate if a vegetation map can provide useful soil information that was not shown on a soil map...
October 7, 2016: Science of the Total Environment
Dong-Mug Kang, Jong-Eun Kim, Ju-Young Kim, Hyun-Hee Lee, Young-Sik Hwang, Young-Ki Kim, Yong-Jin Lee
BACKGROUND: Because of the long asbestos-related disease latencies (10-50 years), detection, diagnosis, and epidemiologic studies require asbestos exposure history. However, environmental asbestos exposure source (EAES) data are lacking. OBJECTIVES: To survey the available data for past EAES and supplement these data with interviews. METHODS: We constructed an EAES database using a literature review and interviews of experts, former traders, and workers...
October 11, 2016: International Journal of Occupational and Environmental Health
Hong Zhu, Shun-Xiang Cai, Jian-Bing Liu, Zu-Wu Tu, Jing Xia, Xiao-Wei Shan, Juan Qiu, Yong Jiang, Ying Xiao, Li Tang, Xi-Bao Huang
BACKGROUND: The province of Hubei is located in the middle of China, near the middle and lower reaches of the River Yangtze, and is an area where schistosomiasis is endemic. It is challenging to control this disease in this environment, and it would be useful to identify clusters of infection and transmission, as well as their distributions during recent years. Therefore, this study aimed to analyze the spatial distribution of schistosomiasis in Hubei, in order to facilitate the effective control and elimination of this disease...
October 4, 2016: Parasites & Vectors
Alexander McCumber, K A Strevett
Lead has been banned from automobile gasoline since 1995; however, lead is still used as an additive to aviation gasoline (avgas). Airports are now one of the greatest sources of lead air emission in the US. The objectives of this study were (1) to evaluate soil lead levels radially from three regional airports; (2) collect historical meteorological data; (3) examine the soil organic matter content and (4) develop correlation coefficients to evaluate correlations among variables. Soil samples were collected from 3 different airports in Oklahoma and the soil lead concentration was measured using x-ray fluorescence (XRF)...
October 3, 2016: Chemosphere
Lan Huong Nguyen, Geetha Mohan, Pu Jian, Kazuhiko Takemoto, Kensuke Fukushi
Currently in many cities and rural areas of Vietnam, wastewater is discharged to the environment without any treatment, which emits considerable amount of greenhouse gas (GHG), particularly methane. In this study, four GHG emission scenarios were examined, as well as the baseline scenario, in order to verify the potential of GHG reduction from domestic wastewater with adequate treatment facilities. The ArcGIS and ArcHydro tools were employed to visualize and analyze GHG emissions resulting from discharge of untreated wastewater, in rural areas of Vu Gia Thu Bon river basin, Vietnam...
2016: TheScientificWorldJournal
Long Xing Fan, En Qi Wu, Jun Liu, Xiao Chen Qu, Chao Liu, Bao An Ning, Ying Liu
Plague is a virulent infectious disease in China. In this study, '3S' technology was used to perform spatial autocorrelation analysis and spatial interpolation analysis for Spermophilus dauricus (S. Dauricus, a species of ground squirrel) captured in Manchuria City in 2015. The results were visually inspected. During the two-month (May to July) plague surveillance in 2015, 198 S. dauricus individuals were captured in the study area in Manchuria City (48 monitoring areas) by using a day-by-day catching method...
August 2016: Biomedical and Environmental Sciences: BES
Lori Kowaleski-Jones, Jessie X Fan, Ming Wen, Heidi Hanson
PURPOSE: The goal of this research is to examine the extent to which facets of neighborhood sociodemographic contexts influence individual-level physical activity (PA) among youth. DESIGN: Using National Health and Nutrition Examination Survey (NHANES), geographic information systems (GIS), and census data sources, we explicitly test whether built environment factors have differential associations depending on the age and gender of the youth living in urban census tracts...
September 16, 2016: American Journal of Health Promotion: AJHP
Matthew Hansen, William Loker, Craig Warden
INTRODUCTION: The association between geographic factors, including transport distance, and pediatric emergency medical services (EMS) run clustering on out-of-hospital pediatric endotracheal intubation is unclear. The objective of this study was to determine if endotracheal intubation procedures are more likely to occur at greater distances from the hospital and near clusters of pediatric calls. METHODS: This was a retrospective observational study including all EMS runs for patients less than 18 years of age from 2008 to 2014 in a geographically large and diverse Oregon county that includes densely populated urban areas near Portland and remote rural areas...
September 2016: Western Journal of Emergency Medicine
Moise C Ngwa, Thomas Masalla, Seraphine Esemu, Foche Francis Fumoloh, Ian Kracalik, Eleonora Cella, Meer Taifur Alam, Jane-Francis Akoachere, Song Liang, Marco Salemi, J Glenn Morris, Afsar Ali, Lucy M Ndip
INTRODUCTION: During the cholera outbreak from 2010 to 2011 in Cameroon, 33,192 cases with 1,440 deaths (case fatality ratio 4.34%) were reported to the World Health Organization. Of these, the South West Region reported 3,120 clinical cases. This region is in the Equatorial Monsoon climatic subzone of Cameroon, close to the coast, raising questions as to whether cases were linked with development of environmental reservoirs. METHODS: In an investigation conducted by the Laboratory for Emerging Infectious Diseases, University of Buea, toxigenic V...
2016: PLoS Currents
Thassiany Sarmento Oliveira de Almeida, Sayonara Maria Lia Fook, Francisco Oscar de Siqueira França, Tânia Maria Ribeiro Monteiro, Edwirde Luiz Silva, Lidiane Cristina Félix Gomes, Aline Maiara Galdino Farias
INTRODUCTION: Due to its frequency and morbidity, such as that caused by scorpions have achieved public health importance in certain regions of the world. The present exploratory ecological study aimed to characterize the epidemiological profile and spatial distribution of scorpion stings in Campina Grande, State of Paraíba in Northeastern Brazil. METHODS: Geographical information system techniques were used to record the scorpion stings, and Google Earth software, Track Maker, and ArcGIS 10 Esri were used as geocoding databases...
July 2016: Revista da Sociedade Brasileira de Medicina Tropical
Wesley R Hauser, Sigrid R Heise-Pavlov
The involvement of communities into ecological studies has been shown to augment conservation efforts, especially for cryptic species. However, there is a lack of studies addressing the utility of incidental sighting records from community members in gaining knowledge on habitat preferences and distribution of suitable habitat for these organisms. This study compares preferences of the Lumholtz's tree kangaroo (Dendrolagus lumholtzi; LTK), a cryptic rainforest folivore in North-Eastern Australia, for various habitat and climatic variables derived from data collected during scientific projects to those derived from incidental sighting records using ArcGIS and Maxent...
September 2, 2016: Integrative Zoology
Mohammad Abousaeidi, Rosmadi Fauzi, Rusnah Muhamad
This study involves the adoption of the Geographic Information System (GIS) modeling approach to determine the quickest routes for fresh vegetable delivery. During transport, fresh vegetables mainly deteriorate on account of temperature and delivery time. Nonetheless, little attention has been directed to transportation issues in most areas within Kuala Lumpur. In addition, perishable food normally has a short shelf life, thus timely delivery significantly affects delivery costs. Therefore, selecting efficient routes would consequently reduce the total transportation costs...
September 2016: Saudi Journal of Biological Sciences
X Zhang, W Tang, Y Li, T Mahapatra, Y Feng, M Li, F Chen, P Li, J Xing, S Qian, L Ge, K Bu, S Mahapatra, S Tang, L Wang, N Wang
OBJECTIVES: Despite a recent increase in the HIV/AIDS epidemic among young people in China, youth-specific HIV data are limited. METHODS: In total, 56 621 individuals with HIV/AIDS, aged 15-24 years, registered in the Case Reporting System of China between 2005 and 2012 and having complete spatial information were included in the present analysis. Spatial autocorrelation (general and local) and space-time scanning were performed using the ArcGIS 10.2 and SaTScan 9...
August 24, 2016: HIV Medicine
Nik Hisamuddin Rahman, Ruslan Rainis, Syed Hatim Noor, Sharifah Mastura Syed Mohamad
BACKGROUND: The main aim of this study is to utilize the geographical information system (GIS) software and perform the spatial analysis in relation to clinical data for road traffic injury (RTI) pediatric cases attending the emergency department. METHODS: The study sample included pediatric patients (age less than 18 years) with road-related injuries within a district in Malaysia who attended emergency departments of two tertiary hospitals within the district. In addition to injury, pre-hospital care and outcome data, the coordinate of the locations were obtained by the ambulance paramedics by using portable handheld GPS unit brand Garmin(®) model GPS 72 H...
2016: World Journal of Emergency Medicine
Xiuli Wang, Jay Pan
BACKGROUND: There is a great disparity in spatial accessibility to hospital care between ethnic minority and non-minority regions in China. Being one of the basic social demands, spatial access to hospital care in minority regions draws increasing attention in China in recent years. We performed this study to have a better understanding of spatial access to hospital care in ethnic minority region in China, and to guide the allocation of government investment in the future. METHODS: Sichuan Province, southwest of China was selected as a sample to examine the difference in hospital access between ethnic minority and non-minority region in China...
2016: BMC Health Services Research
N Khademi, S Reshadat, A Zangeneh, S Saeidi, S R Ghasemi, N Rajabi-Gilan, A Zakiei
OBJECTIVES: Geographical information systems (GISs) have made spatiotemporal understanding of geographical patterns possible and have contributed to the identification and analysis of factors relating to health care behaviours and outcomes. The present study is the first to examine the spatial distribution of HIV prevalence in the metropolis of Kermanshah, Iran, using GISs. METHODS: The research methods were descriptive, analytical and comparative. Additionally, data recorded for HIV-infected patients in 1996-2014 were used and then the loci of HIV infection in the metropolis of Kermanshah were identified and analysed spatially using ArcGIS (Esri, New York, NY, USA)...
August 18, 2016: HIV Medicine
Rebecca Evans, Sarah Larkins, Tracy Cheffins, Rhonda Fleming, Karen Johnston, Marc Tennant
Australia has seen a significant increase in people aged over 65 years accessing general practice services over the last decade. Although people aged 65 years and over comprise 14% of the total population, this age demographic accounts for the largest proportion of general practitioner (GP)-patient encounters. Access to general practice is important for older Australians as the burden of chronic disease increases with age. A geographic information system, ArcGIS, was used to assess geographic access to general practice for older people residing in the regional Queensland towns of Mackay, Townsville and Cairns...
August 17, 2016: Australian Journal of Primary Health
He Wang, Hong-biao Gu, Bao-ming Chi, Hai-jun Li, Hai-ning Jiang
Taking the nitrate in shallow groundwater of Liujiang basin as the research object, a total of 215 groups of shallow groundwater samples were collected during the wet period in July 2014 and the drought period in April 2015 on the basis of groundwater pollution investigation. The characteristics of spatial and temporal variability and the account of nitrate pollution were analyzed based on the model of semivariogram, the geostatistics of ArcGIS and factor analysis, respectively. The results showed that the study region in the southeast was the main nitrate-polluted area, with concentrations of up to 30-120 mg · L⁻¹, in both wet and drought periods, while the nitrate-contaminated area in drought period was about 1...
May 15, 2016: Huan Jing Ke Xue= Huanjing Kexue
Hong Cui, Xiaode Zhou, Mengjing Guo, Wu Wei
Land-use change is very important for determining and assessing the influence of human activity on aquatic environment of rivers and lakes. The present work with Bosten River basin as the subject, analyzes features of dynamic land-use change of the basin from 1993 to 2013, in order to study the influence of land-use pattern change on the basin water quality, according to the land-use/land-cover(LUCC) chart from 2000 to 2013 made by ArcGIS and ENVI. It shows cultivated land, wetland and forestland constitute most of Bosten River basin, taking up over 41...
July 2016: Journal of Environmental Biology
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