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Clothing Area Factor for Typical Seasonal Clothing of Infant
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作者 Yoshihito Kurazumi Kenta Fukagawa +4 位作者 Tomonori Sakoi Akie Naito Reiko Hashimoto Emi Kondo Tadahiro Tsuchikawa 《Health》 2021年第4期378-392,共15页
It is not ethical to conduct experiments on infants regarding the thermal environment. Therefore, to examine the thermal environment of infants, experiments and simulations using a human body thermal model may be feas... It is not ethical to conduct experiments on infants regarding the thermal environment. Therefore, to examine the thermal environment of infants, experiments and simulations using a human body thermal model may be feasible by clarifying the human body coefficient values of infants. When focusing on the heat transfer area of the infant’s body coefficient values, the body surface area and solar radiation area factor have only been clarified as the standard. The essential basic data for examining the thermal environment of infants have not been sufficiently obtained. Therefore, the purpose of this study was to determine the clothing area factor for infants’ clothing in a typical season. The clothing area factor of infants clothed in summer, mid-season, and winter clothing was measured using a photographic method. The clothing area factor was 1.22, 1.42, and 1.90 for summer, mid-season, and winter clothing, respectively, indicating a significant seasonal difference. It was also found that the clothing area factor was significantly greater for infants than for adults. 展开更多
关键词 Clothing area factor Heat Transfer area INFANT SEASON Thermal Environment
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Baoziwan-Majiashan Area of Jiyuan Oilfield Analysis of Reservoir Characteristics and Main Control Factors in Long 4 5 Section
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作者 Zhengxi Cui Zhipeng Zhang Mingling Shen 《Open Journal of Yangtze Oil and Gas》 2024年第2期48-64,共17页
Based on the sheet, scanning electron microscope and high pressure mercury analysis method, this paper takes Jiyuan oilfield-Ma Jia mountain district 4 5 sandstone reservoir as the research object, from the reservoir ... Based on the sheet, scanning electron microscope and high pressure mercury analysis method, this paper takes Jiyuan oilfield-Ma Jia mountain district 4 5 sandstone reservoir as the research object, from the reservoir petrology, pore type and porosity, permeability, the system analyzed the reservoir characteristics and its control factors. The results show that the sandstone in the 4 5 section of Baoziwan-Majiashan area of Jiyuan oilfield is fine in size and high in filling content. The pore types were dominated by intergranular pores and dissolved pores, with a low face rate. The reservoir property is relatively poor, with mean porosity of 11.11% and mean permeability of 1.16 × 10<sup>−</sup><sup>3</sup> µm<sup>2</sup>. In the low porous, low otonic background, the development of relatively high pore hypertonic areas. Compaction and cementation should play a destructive role in reservoir properties, and dissolution should play a positive role in reservoir properties. Compaction adjusts the migration of clay minerals and miscellaneous bases in the original sediment in the study area, greatly reducing the porosity and permeability of the reservoir;the development of the cement cement, carbonate cementation and some quartz secondary compounds reduces the storage space;the dissolution effect, especially the secondary dissolution pores of the reservoir, which obviously improves the properties of the reservoir. 展开更多
关键词 Ordos Basin Jiyuan area Reservoir Characteristics Reservoir Control factor Long 4 5 Section
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Acceptability of Immunization against COVID-19 by the Populations of the Kasenga State Health Area in the Uvira Health Zone, DR Congo
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作者 Derrick Bushobole Akiba Eric Amuri Madabali +11 位作者 Robert Bushambale Fataki Abel Asende Luhendama Jacques Mutono Matongo Faustin Bukuru Mudage Christian Banyakwa Mitunda Saili Stay Mushobekwa Michel Byaombe Wa Ngene Martin Longolongo Kiza Paulin Mulogoto Rushanika Emmanuel Nirambo Rujanjika Henry Manya Mboni Criss Koba Mjumbe 《Journal of Immune Based Therapies, Vaccines and Antimicrobials》 2024年第3期33-46,共14页
Introduction: COVID-19 was an emerging disease putting all public health systems in countries around the world in a state of emergency. To be able to prevent its spread and morbidity and mortality, several appropriate... Introduction: COVID-19 was an emerging disease putting all public health systems in countries around the world in a state of emergency. To be able to prevent its spread and morbidity and mortality, several appropriate strategies were necessary, such as vaccination. The latter has been the subject of controversy. The objective of the present study is therefore to evaluate the factors associated with the acceptance of this vaccine within the population of the Kasenga State Health Area. A result which will shed light on future strategies to be put in place for possible new vaccines. Methodology: Is a prospective and analytical cross-sectional study conducted over a period of approximately 1 month from January 5 to February 5, 2024. A survey questionnaire in Kobotoolbox was useful for collecting data. STATA software was very important for us in analyzing the data collected. Results: Prevalence of vaccination against COVID-19 among the population of the Kasenga State Health Area is 37.5% (28.4 - 45.6). The study revealed that reluctance is observed among most of the population for different reasons, including, first and foremost, the deliberate aspect of not wanting to take the vaccine (46.6%) and rumors that this antigen is dangerous and harmful (32.9%). 72.5% of respondents believe that the COVID-19 vaccine is a fabrication, unhealthy and that the disease itself never existed. The study proved that there was a statistical relationship between age (p = 0.001) and adherence to vaccination. And the refusal of respondents to recommend the vaccine to loved ones was a factor associated with non-adherence to vaccination (OR = 7.901, 95% IC [3.028 - 20.615], p = 0.000). Conclusion: Vaccination against COVID-19 was not well accepted by the population of the study site. Raising public awareness and involving community leaders and political-administrative authorities, which has not been done well, would play an important role in the good perception of the disease, of the vaccine and therefore in its adherence. 展开更多
关键词 COVID-19 Vaccination Kasenga State Health area Associated factors Uvira Health Zone City of Uvira
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Prevalence of Cardiovascular Risk Factors and Heart Diseases within the Urban and Rural Communities of the Town of Bougouni and Its Surroundings (Southern Mali): A Comparative Study
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作者 Adama Sogodogo René Marie Dakouo +7 位作者 Hamidou Camara Ladji Traore Amadou Coulibaly Hamidou Oumar Ba Noumou Sidibé Ibrahim Sangaré Boubacar Diarra Ichaka Menta 《World Journal of Cardiovascular Diseases》 CAS 2024年第9期603-611,共9页
In Mali, few studies have been conducted on the prevalence of cardiovascular risk factors and diseases according to place of residence. The aim of this study was to assess the prevalence of risk factors and cardiovasc... In Mali, few studies have been conducted on the prevalence of cardiovascular risk factors and diseases according to place of residence. The aim of this study was to assess the prevalence of risk factors and cardiovascular diseases according to residents in town of Bougouni and its rural area (southern Mali). Methods: This was a retrospective descriptive study from February 2019 to March 2024. All patients who visited the “CENTRE MEDICAL DE BOUGOUNI” clinic with known or suspected heart disease during the study period were included. Data were collected from medical records. Incomplete or unusable records were excluded. Data were processed using SPS version 22 software. Results: we included 452 patients with an average age of 50 ± 19 years. High blood pression has been found in 42.70% of cases, with higher prevalence in urban areas (47.01%) than in rural areas (41.50%). Diabetes and smoking were found respectively 5.31% and 8.19% in our population. The prevalence of diabetes was higher in urban areas (5.97%) than rural area (5.35%). smoking prevalence was higher in rural areas (8.49%) than urban areas (6.72%). Alcoholism was found in 2.21% of cases with a little difference between rural area (2.24%) and urban area (2.20%). 31.63% of our patients had no cardiovascular factor. Dyspnea was the reason of consultation in 5.75% of cases and atypical precordialgia in 13.72%. Headaches and dizziness in 8.63% of cases and 21.90% of patients presented other non-specific symptoms. Diagnosis of idiopathic dilated cardiomyopathy was found in 23.45% of cases with higher prevalence in rural areas (28.30%) than urban areas (13.43%). Ischaemic heart disease accounted for 9.29% of cases with a higher prevalence in rural areas (10.38%) than in urban areas (6.71%). PPCMs accounted for 5.98% of cases, with a slight increase in urban areas (6.66%) compared with rural areas (5.68%). Rheumatic valvulopathy accounted for 2.21% of cases;2.84% in rural areas and 0.74% in urban areas. Other valvular diseases accounted for 3.76% of cases;4.73% in rural areas and 1.48% in urban areas. Right heart diseases accounted for 3.98% of cases and stroke for 1.77%. Conclusion: The prevalence of cardiovascular risk factors and heart diseases is high in the rural and urban population of the town of Bougouni and its surroundings (Mali). Excepted smoking, the prevalence of other CV risk factors is higher in urban areas, whereas the prevalence of idiopathic dilated cardiomyopathy and ischemic heart disease is higher in rural areas. These data could serve as a basis for developing tailored preventive strategies, depending on the place of residence. 展开更多
关键词 PREVALENCE Cardiovascular Risk factors Cardiovascular Diseases Rural and Urban areas Bougouni-Mali
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Factor Analysis on the Factors that Influencing Rural Environmental Pollution in the Hilly Area of Sichuan Province,China 被引量:13
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作者 LING Jing1,2,DENG Liang-ji1,2 1.School of Resource and Environment,Sichuan Agricultural University,Ya’an 625014,China 2.Key Laboratory of Land Information in Sichuan Province,Ya’an 625014,China 《Asian Agricultural Research》 2011年第2期69-72,共4页
By using factor analysis method and establishing analysis indicator system from four aspects including crop production,poultry farming,rural life and township enterprises,the difference,features,and types of factors i... By using factor analysis method and establishing analysis indicator system from four aspects including crop production,poultry farming,rural life and township enterprises,the difference,features,and types of factors influencing the rural environmental pollution in the hilly area in Sichuan Province,China.Results prove that the major factor influencing rural environmental pollution in the study area is livestock and poultry breeding,flowed by crop planting,rural life,and township enterprises.Hence future pollution prevention and control should set about from livestock and poultry breeding.Meanwhile,attention should be paid to the prevention and control of rural environmental pollution caused by rural life and township enterprise production. 展开更多
关键词 RURAL area ENVIRONMENTAL POLLUTION Influencing fac
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Bottom Factors Applied to the Zoning Study of the Risk Levels of Landslides in the Three Gorges Reservoir Area 被引量:12
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作者 QIAO Jianping ZHU Axing +1 位作者 WU Caiyan TIAN Hongling 《Wuhan University Journal of Natural Sciences》 EI CAS 2006年第4期761-766,共6页
Without taking inducing factors into consideration, this paper adopts a quantitative analysis of the bottom factors in the Three Gorges Reservoir area, studies the relationship between the bottom factors and the devel... Without taking inducing factors into consideration, this paper adopts a quantitative analysis of the bottom factors in the Three Gorges Reservoir area, studies the relationship between the bottom factors and the development of landslides, and then zones the area according to risk levels. The bottom factors adopted in this paper include lithological characters(U1 ), gradient(U2 ), slope form (U3), difference of helght(U4 ), and slope orientation(U5 ). In 4 650 km^2 of the studied area, the areas of the very high, high, medium and low hazard degree area respectively were 57. 94 km^2 , 2 305.15 km^2, 1 241.6 km^2, 1 045.31 km^2. The methodological steps are (1) inversion statistic analysis, (2) the analysis of contribution ratio and weighing, (3) getting results via fuzzy evaluation of risk levels. 展开更多
关键词 bottom factors Three Georges area LANDSLIDE
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Spatial-temporal Heterogeneity of Green Development Efficiency and Its Influencing Factors in Growing Metropolitan Area: A Case Study for the Xuzhou Metropolitan Area 被引量:7
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作者 QIU Fangdao CHEN Yang +3 位作者 TAN Juntao LIU Jibin ZHENG Ziyan ZHANG Xinlin 《Chinese Geographical Science》 SCIE CSCD 2020年第2期352-365,共14页
This study analyzed the spatial-temporal heterogeneity of green development efficiency and its influencing factors in the growing Xuzhou Metropolitan Area for the period 2000–2015.The slacks-based measure(SBM)model,s... This study analyzed the spatial-temporal heterogeneity of green development efficiency and its influencing factors in the growing Xuzhou Metropolitan Area for the period 2000–2015.The slacks-based measure(SBM)model,spatial autocorrelation,and the geographically weighted regression(GWR)model were used to conduct the analysis.The conclusions were as follows:first,the overall efficiency of green development of the Xuzhou Metropolitan Area decreased,the regional differences and spatial agglomeration shrunk and differences within the region were the main contributors to the regional differences of green development efficiency.Second,the counties with high-efficiency green development were distributed along the coast,and along the routes of the Beijing-Shanghai and the Eastern Longhai railways.A developing axis of the high-efficiency counties was the main feature of the spatial pattern for green development efficiency.Third,regarding spatial correlation and green development efficiency,the High-High type counties in the Xuzhou Metropolitan Area formed a centralized distribution corridor along the inter-provincial border areas of Henan and Jiangsu,whereas the Low-Low type counties were concentrated in the external,marginal parts of the metropolitan area.Fourth,the major factors(ranked in decreasing order of impact)influencing green development efficiency were innovation,government regulations,the economic development level,energy consumption,and industrial structure.These factors exerted their influence to varying extents;the influence of the same factor had different effects in different regions and obvious spatial differences were observed for the different regions. 展开更多
关键词 GROWING METROPOLITAN area green development EFFICIENCY spatial and TEMPORAL HETEROGENEITY influential factors XUZHOU METROPOLITAN area China
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Analysis of the Influencing Factors of Changes in Foxtail Millet Planting Area in Hebei Province 被引量:2
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作者 Meng LIU Yu ZHAO +3 位作者 Fei LIU Shunguo LI Guirong WANG Xinshi ZHANG 《Asian Agricultural Research》 2013年第3期30-34,共5页
Since reform and open to the outside world,foxtail millet planting area in Hebei Province has constantly reduced,and its planting region has changed from the whole province into some regions,with obvious changes. In t... Since reform and open to the outside world,foxtail millet planting area in Hebei Province has constantly reduced,and its planting region has changed from the whole province into some regions,with obvious changes. In this paper,by using qualitative and quantitative approaches like chart analysis,summarizing,Delphi method and osculating value model,the influencing factors of changes in millet growing region in Hebei Province were studied. The results showed that the changes of millet planting area were closely related to many factors,such as little investment in scientific research,weak policy support,a single consumer product demand,the rapid development of other staple crops, labor migration,relatively low comparative effectiveness and physiological characteristics of the millet itself. Then some suggestions were put forward,such as increasing research support,strengthening scientific research strength,researching and developing deeply processed products, expanding consumer groups,improving millet policy support,providing subsidies for planting the improved varieties,researching and developing various types of machinery,and increasing millet production technology training. 展开更多
关键词 MILLET area CHANGES Influencing factorS Osculating
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Production Characteristics and the Control Factors of Surface Wells for Relieved Methane Drainage in the Huainan Mining Area 被引量:6
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作者 XU Hongjie SANG Shuxun +1 位作者 FANG Liangcai HUANG Huazhou 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2011年第4期932-941,共10页
Based on the production data of a large number of surface drainage wells in the Huainan mining area,the present study shows that four types of typical production characteristics for relieved methane wells are recogniz... Based on the production data of a large number of surface drainage wells in the Huainan mining area,the present study shows that four types of typical production characteristics for relieved methane wells are recognized,of which the stable type for production and gas concentration is the most dominate,as determined by a comprehensive study on the volume and concentration of drained gases, as well as the stress changes of rocks influenced by mining.Some influence factors for the productive differences of the drainage wells were also been discussed.The results indicate that protective coal-seam mining has a significant effect on overlying strata,which promotes the development of pores and fractures of coal reservoirs for methane desorption and migration;however,the production and the stability of drainage wells are affected by deformation and damage of the overlying strata.The second distribution of strata stress is caused by mining engineering,and if the stress load is larger than the carrying capacity of the extraction well,the gas production would be influenced by the drainage well that has been damaged by rock movement.Furthermore,the case damage occurs first in the weak, lithologic interface by its special mechanical properties.The stability of drainage wells and the production status are also influenced by the different drilling techniques,uneven distribution of gas concentration,and combination of gob gas and methane from the protected layer. 展开更多
关键词 relieved methane surface drainage well Huainan mining area production characteristic control factor
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Relationship between NO_2 Concentration and Meteorological Factors in the Urban Area of Wanzhou District 被引量:1
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作者 Xiang Yingchun Zhang Liying +2 位作者 Mao Xiaozhen Ma Huiyan Qian Ruozhi 《Meteorological and Environmental Research》 CAS 2014年第3期22-25,共4页
Firstly,the daily variations of NO2 concentration in the urban area of Wanzhou in 2012 were analyzed,and then the relationship between NO2 concentration and meteorological factors( precipitation,atmospheric pressure,... Firstly,the daily variations of NO2 concentration in the urban area of Wanzhou in 2012 were analyzed,and then the relationship between NO2 concentration and meteorological factors( precipitation,atmospheric pressure,wind speed,temperature,relative humidity and sunshine hours) was discussed. Finally,the multiple linear regression equation was established to predict NO2 concentration. The results showed that NO2 concentration in the urban area of Wanzhou did not exceed 80 μg /m3in most days from January 1 to December 31 in 2012. Among the six meteorological factors,NO2 concentration correlated significantly with three meteorological factors,that is,NO2 concentration correlated negatively with atmospheric pressure and wind speed but positively with relative humidity. NO2 concentration in the urban area of Wanzhou could be predicted using the multiple linear regression model. According to the rose diagram of wind directions,the wind blowing from the NNW was dominant in the urban area of Wanzhou. 展开更多
关键词 Wanzhou Urban area Nitrogen dioxide Meteorological factors China
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Failure characteristics of surface vertical wells for relieved coal gas and their influencing factors in Huainan mining area 被引量:3
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作者 Xu Honkie Sang Shuxun +2 位作者 Fang Liangcai 6 Huang Huazhou Ren Bo 《Mining Science and Technology》 EI CAS 2011年第1期83-88,共6页
Based on data from through-hole and logging,we studied the failure characteristics of surface drainage wells for relieved coal gas in Huainan mining area and its influencing factors.The results show that the damaged p... Based on data from through-hole and logging,we studied the failure characteristics of surface drainage wells for relieved coal gas in Huainan mining area and its influencing factors.The results show that the damaged positions of drainage wells are mainly located at the thick clay layer in the low alluvium and the lithological interface in the upper section of bedrock in west mining area.The failure depth of casing is 244-670 m and concentrates at about 270-460 m deep.These damaged positions are mainly located in the bending zone according to three zones of rock layers in the vertical section above the roof divided. Generally,the casing begins to deform or damage before the face line about 30-150 m.Special formation structure and rock mass properties are the direct causes of the casing failure,high mining height and fast advancing speed are fundamental reasons for rock mass damage.However,the borehole configuration and spacing to the casing failure are not very clear. 展开更多
关键词 Huainan mining area Vertical wells for relieved coal gas Failure characteristics Influencing factors
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Evaluation of the Strategic Factors of the Management of Protected Areas Using SWOT Analysis—Case Study: Bashgol Protected Area-Qazvin Province
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作者 Siavash Rezazadeh Ali Jahani +1 位作者 Majid Makhdoum Hamid Goshtasb Meigooni 《Open Journal of Ecology》 2017年第1期55-68,共14页
The majority of Iranian protected areas are being affected by human activities. Such areas demand continuous monitoring into account due to quality loss problem. This study identifies the weaknesses and strengths as w... The majority of Iranian protected areas are being affected by human activities. Such areas demand continuous monitoring into account due to quality loss problem. This study identifies the weaknesses and strengths as well as opportunities and threats of Bashgol protected area and analyzes them using SWOT matrix in order to provide an efficient managerial strategy. Following the identification of factors, experts’ opinion was collected using questionnaire. Then, the factors were scored based on IFE (Internal Factors Evaluation) and EFE (External Factors Evaluation) tables and were weighted using AHP and EXPERT CHOICE. Totally, 16 strengths and opportunities were determined as the advantages of this area and 22 weaknesses and threats were identified as the limitations and straits. The final scores of IFE and EFE were 2.468 and 2.261, respectively and both are below 2.5 indicating that the area is in defensive state. According to quantitative strategic planning matrix (QSPM), “attracting required credits for the completely implementation of the comprehensive management plan of the area” was determined as the most important strategy (score = 6.365). 展开更多
关键词 Assessment Bashgol Protected area STRATEGIC factorS SWOT
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Factors Influencing Rural Teacher Flow in Yunnan Ethnic Minority Areas
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作者 Yan SUN Zhaochang REN +1 位作者 Yang HE Haijiao ZHU 《Asian Agricultural Research》 2013年第8期93-97,共5页
Ethnic minority areas area old revolutionary base areas,areas inhabited by ethnic minorities,remote areas,impoverished areas, and also difficult areas for construction of socialist harmonious society.Studying on facto... Ethnic minority areas area old revolutionary base areas,areas inhabited by ethnic minorities,remote areas,impoverished areas, and also difficult areas for construction of socialist harmonious society.Studying on factors influencing rural teacher flow in ethnic minority areas is of great significance to improving local teacher team structure and promoting balanced development of urban and rural education.However,it lacks empirical analysis based on field survey for the nonce.In this study,based on interview and questionnaire data of education departments and school leaders in 4 ethnic minority areas of Yunnan Province,it established binary Logistic model,analyzed factors influencing rural teacher flow in ethnic minority areas of Yunnan Province,and finally present policy recommendations. 展开更多
关键词 ETHNIC MINORITY areas Influencing factors Logistic
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MINERALOGICAL CHARACTERISTICS AND CONTROL FACTORS OF SURFACE SEDIMENTS IN THE SEA AREA NORTHWEST OF THE ANTARCTIC PENINSULA
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作者 Ma Kejian Li Zhizhen Gao Shuitu 《Chinese Journal of Polar Science》 1991年第2期75-82,87-88,共10页
Analysis and study of clastic and clay minerals of surface sediments and their chemical composition in the sea area northwest of the Antarctic Peninsula enable the authors to divide this area basically into four miner... Analysis and study of clastic and clay minerals of surface sediments and their chemical composition in the sea area northwest of the Antarctic Peninsula enable the authors to divide this area basically into four mineralogical provinces : (1) the mineral ogical province of coast and island shelf of the Southern Shetland Islands, (2) the mineral ogical province of the eastern Bransfield Strait, (3) the mineral ogical province of the western Bransfield Strait, and (4) the mineral ogical province of the western Antarctic Peninsula. Finally, the relationships between the mineral distribution and geologic ,structure, material sources, glaciers, currents, and environments are briefly described. 展开更多
关键词 Antarctic Peninsula Sea area control factors mineralogical characteristics.
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Geological Factors Controlling the Accumulation and High Yield of Marine-Facies Shale Gas: Case Study of the Wufeng-Longmaxi Formation in the Dingshan Area of Southeast Sichuan, China 被引量:8
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作者 FAN Cunhui ZHONG Cheng +2 位作者 ZHANG Yu QIN Qirong HE Shun 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2019年第3期536-560,共25页
The main geological factors controlling the accumulation and yield of marine-facies shale gas reservoirs are the focus of the current shale gas exploration and development research.In this study,the Wufeng-Longmaxi Fo... The main geological factors controlling the accumulation and yield of marine-facies shale gas reservoirs are the focus of the current shale gas exploration and development research.In this study,the Wufeng-Longmaxi Formation in the Dingshan area of southeast Sichuan was investigated.Shale cores underwent laboratory testing,which included the evaluation of total organic carbon(TOC),vitrinite reflectance(Ro),whole-rock X-ray diffraction(XRD),pore permeability,and imaging through field emission scanning electron microscopy(FE-SEM).Based on the results of natural gamma ray spectrum logging,conventional logging,imaging logging,and seismic coherence properties,the exploration and development potential of shale gas in the Dingshan area have been discussed comprehensively.The results showed that(1)layer No.4(WF2-LM4)of the Wufeng-Longmaxi Formation has a Th/U ratio<2 and a Th/K ratio of 3.5–12.Graptolites and pyrite are relatively abundant in the shale core,indicating sub-high-energy and low-energy marine-facies anoxic reducing environments.(2)The organic matter is mainly I-type kerogen with a small amount of II1-type kerogen.There is a good correlation among TOC,Ro,gas content,and brittle minerals;the fracturing property(brittleness)is 57.3%.Organic and inorganic pores are moderately developed.A higher pressure coefficient is correlated with the increase in porosity and the decrease in permeability.(3)The DY1 well of the shale gas reservoir was affected by natural defects and important latestage double destructive effects,and it is poorly preserved.The DY2 well is located far from the Qiyueshan Fault.Large faults are absent,and upward fractures in the Longmaxi Formation are poorly developed.The well is affected by low tectonic deformation intensity,and it is well preserved.(4)The Dingshan area is located at the junction of the two sedimentary centers of Jiaoshiba and Changning.The thickness of the high-quality shale interval(WF2-LM4)is relatively small,which may be an important reason for the unstable production of shale gas thus far.Based on the systematic analysis of the geological factors controlling high-yield shale gas enrichment in the Dingshan area,and the comparative analysis with the surrounding typical exploration areas,the geological understanding of marine shale gas enrichment in southern China has been improved.Therefore,this study can provide a useful reference for shale gas exploration and further development. 展开更多
关键词 MAIN controlling factors ENRICHMENT CONSERVATION SHALE gas Dingshan area
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Epidemiology and risk factors of retinoblastoma in Chongqing area
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作者 Yu-Qiong Yang Jia Li Hong-Feng Yuan 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2016年第7期984-988,共5页
AIM: To investigate the risk factors of retinoblastoma in Chongqing and offer the bases for scientific measures. METHODS: One hundred and thirty-three retinoblastoma patients were taken as case group, and 133 child... AIM: To investigate the risk factors of retinoblastoma in Chongqing and offer the bases for scientific measures. METHODS: One hundred and thirty-three retinoblastoma patients were taken as case group, and 133 children were taken as control group in 1:1 ratio. The relevant factors were collected from a questionnaire survey which was made by our research group. First, Chi-square and t-test were used to discuss the various factors, and then the logistic regression analysis was made by statistics software SPSS17.0 based on the result of 266 people. RESULTS: Single factor analysis results showed the differences between the two groups were statistically significant (P〈0.05) in 17 factors which were education level of their parents, occupation of their parents, exposure to harmful chemicals of their parents 6mo before pregnancy, the history of pelvic inflammatory disease of mother before pregnancy, childbearing history of their parents, pregnant age of their parents, the medication history of father 6mo before pregnancy, living place of their parents, the pollution living place of mother, hobbies of their parents. Multivariate analysis showed that the living place of parents, mother who feed pets before pregnancy, and exposure to harmful chemicals of father before pregnancy were the independent risk factors of retinoblastoma (P〈0.05). CONCLUSION: The living place of parents, mother who feed pets before pregnancy, exposure to harmful chemicals of father before pregnancy were the risk factors of retinoblastoma which affects the occurrence of retinoblastoma in a certain extent. 展开更多
关键词 Chongqing area RETINOBLASTOMA EPIDEMIOLOGY risk factors
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Area-Correlated Spectral Unmixing Based on Bayesian Nonnegative Matrix Factorization 被引量:1
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作者 Xiawei Chen Jing Yu Weidong Sun 《Open Journal of Applied Sciences》 2013年第1期41-46,共6页
To solve the problem of the spatial correlation for adjacent areas in traditional spectral unmixing methods, we propose an area-correlated spectral unmixing method based on Bayesian nonnegative matrix factorization. I... To solve the problem of the spatial correlation for adjacent areas in traditional spectral unmixing methods, we propose an area-correlated spectral unmixing method based on Bayesian nonnegative matrix factorization. In the proposed me-thod, the spatial correlation property between two adjacent areas is expressed by a priori probability density function, and the endmembers extracted from one of the adjacent areas are used to estimate the priori probability density func-tions of the endmembers in the current area, which works as a type of constraint in the iterative spectral unmixing process. Experimental results demonstrate the effectivity and efficiency of the proposed method both for synthetic and real hyperspectral images, and it can provide a useful tool for spatial correlation and comparation analysis between ad-jacent or similar areas. 展开更多
关键词 Hyperspectral Image Spectral Unmixing area-Correlation BAYESIAN NONNEGATIVE Matrix factorization
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A comprehensive factor model of growth velocity of green algae and diatoms in local lake area
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作者 Zhihong WANG Fuyi CUI +1 位作者 Jie JIA Wenxuan CHEN 《Chinese Journal Of Geochemistry》 EI CAS 2006年第B08期163-163,共1页
关键词 藻类 速度模型 生长速度 盐度
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Dividing the Expropriated Areas Based on Multi-Factor Comprehensive Evaluation—A Case Study of Gongcheng Yao Autonomous County
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作者 Yuening Song Xiangwen Cai +3 位作者 Mi Tang Mingyuan Liu Yan Zhao Zehao Liu 《Journal of Geographic Information System》 2020年第6期579-596,共18页
In recent years, with the rapid development of urbanization in China, land acquisition work is particularly important. The division of expropriated area is the primary factor to be considered when evaluating the compr... In recent years, with the rapid development of urbanization in China, land acquisition work is particularly important. The division of expropriated area is the primary factor to be considered when evaluating the comprehensive land price of expropriated area. Reasonable division can help to improve the scientific and applicability of the comprehensive land price of the region. How to maximize the protection of farmers’ rights and interests by the division of land requisition is an urgent problem to be solved. Taking Gongcheng Yao Autonomous County as an example, this study adopted the multi-factor comprehensive evaluation method to evaluate the division of land requisition in this area, and carried out the corresponding spatial analysis and data processing based on GIS technology. Gongcheng Yao Autonomous County was divided into levy areas, and the Delphi method was used to screen the impact factors and determine the weight of the levy areas. Reasonable division of land requisition area can provide references for land requisition area, make it more scientific and reasonable, and protect the rights and interests of farmers. 展开更多
关键词 area Division Multi factor Comprehensive Evaluation ARCGIS DELPHI
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Controlling Factors Affecting Pressure Differential Development of the Upper Paleozoic Gas Reservoir in the Sulige and Yulin Area of the Ordos Basin
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作者 Hao Xu~1,Junfeng Zhang~2,Chengzao Jia~3,Dazhen Tang~1,Ming Li~3,Wenzhong Zhang~1 1.Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism,Ministry of Education,China University of Geosciences(Beijing),Beijing 100083,China. 2.PetroChina Exploration and Production Company,Beijing 100724,China 3.Research Institute of Petroleum Exploration & Development,Beijing 100083,China 《地学前缘》 EI CAS CSCD 北大核心 2009年第S1期126-127,共2页
The origin and distribution of Upper Paleozoic reservoirs pressure in mid-northem Ordos Basin has attracted widespread attention in recent years.The reservoir pressure of Sulige area shows characteristics of basically... The origin and distribution of Upper Paleozoic reservoirs pressure in mid-northem Ordos Basin has attracted widespread attention in recent years.The reservoir pressure of Sulige area shows characteristics of basically subnormal pressure,and the reservoir pressure of Yulin area shows characteristics of basically normal hydrostatic pressure.In the sense of structural location, 展开更多
关键词 ORDOS BASIN SULIGE area Yulin area formation PRESSURE controlling factorS
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