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Advancing Malaria Prediction in Uganda through AI and Geospatial Analysis Models
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作者 Maria Assumpta Komugabe Richard Caballero +1 位作者 Itamar Shabtai Simon Peter Musinguzi 《Journal of Geographic Information System》 2024年第2期115-135,共21页
The resurgence of locally acquired malaria cases in the USA and the persistent global challenge of malaria transmission highlight the urgent need for research to prevent this disease. Despite significant eradication e... The resurgence of locally acquired malaria cases in the USA and the persistent global challenge of malaria transmission highlight the urgent need for research to prevent this disease. Despite significant eradication efforts, malaria remains a serious threat, particularly in regions like Africa. This study explores how integrating Gregor’s Type IV theory with Geographic Information Systems (GIS) improves our understanding of disease dynamics, especially Malaria transmission patterns in Uganda. By combining data-driven algorithms, artificial intelligence, and geospatial analysis, the research aims to determine the most reliable predictors of Malaria incident rates and assess the impact of different factors on transmission. Using diverse predictive modeling techniques including Linear Regression, K-Nearest Neighbor, Neural Network, and Random Forest, the study found that;Random Forest model outperformed the others, demonstrating superior predictive accuracy with an R<sup>2</sup> of approximately 0.88 and a Mean Squared Error (MSE) of 0.0534, Antimalarial treatment was identified as the most influential factor, with mosquito net access associated with a significant reduction in incident rates, while higher temperatures correlated with increased rates. Our study concluded that the Random Forest model was effective in predicting malaria incident rates in Uganda and highlighted the significance of climate factors and preventive measures such as mosquito nets and antimalarial drugs. We recommended that districts with malaria hotspots lacking Indoor Residual Spraying (IRS) coverage prioritize its implementation to mitigate incident rates, while those with high malaria rates in 2020 require immediate attention. By advocating for the use of appropriate predictive models, our research emphasized the importance of evidence-based decision-making in malaria control strategies, aiming to reduce transmission rates and save lives. 展开更多
关键词 MALARIA Predictive Modeling Geospatial Analysis Climate Factors Preventive Measures
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Analysis and Research on 10kV Distribution Network Faults
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作者 Jiyuan Wang Ouzhu Ciren +1 位作者 Xiaokang Zhou Ruijin Zhu 《Journal of Electronic Research and Application》 2024年第3期89-96,共8页
The 10kV distribution network is an essential component of the power system,and its stable operation is crucial for ensuring reliable power supply.However,various factors can lead to faults in the distribution network... The 10kV distribution network is an essential component of the power system,and its stable operation is crucial for ensuring reliable power supply.However,various factors can lead to faults in the distribution network.In order to enhance the safety and reliability of power distribution,this paper focuses on the analysis of faults in the 10kV distribution network caused by natural factors,operational factors,human factors,and equipment factors.It elucidates the various hazards resulting from distribution network faults and proposes corresponding preventive measures for different types of faults in the 10kV distribution network.The aim is to mitigate or reduce the impact of distribution network faults,ensuring the safe and stable operation of the distribution system. 展开更多
关键词 10kV distribution network Line faults Fault hazards Preventive measures
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Epidemiological characteristics of varicella in Chongqing,China,2014-2021
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作者 Yong-Jiao Hu Qing Wang +5 位作者 Mu-Nan Zhang Xin Zeng Quan-Hong Lu Zheng Zhang Ping Cheng Jing Deng 《Medical Data Mining》 2024年第2期32-38,共7页
Background:To analyze the epidemiological characteristics of varicella epidemics in Chongqing Municipality from 2014 to 2021,and to provide a scientific basis for the formulation of varicella prevention and control me... Background:To analyze the epidemiological characteristics of varicella epidemics in Chongqing Municipality from 2014 to 2021,and to provide a scientific basis for the formulation of varicella prevention and control measures.Methods:Data on the incidence of varicella outbreaks and vaccination data in Chongqing from 2014 to 2021 were collected through the China Disease Control and Prevention Information System and statistically analyzed using descriptive epidemiological methods.Results:From 2014 to 2021,213,715 cases of varicella were reported in Chongqing Municipality,with an average annual incidence rate of 86.26/100,000,with a statistically significant difference(χ^(2)=24,972.069,P<0.001);varicella incidence is seasonal,with peaks in May/June and October/December each year,presenting a“double-peak distribution”.The average annual incidence rate of varicella in municipal districts was 90.74/100,000,which was higher than that of counties 69.62/100,000 and autonomous counties 84.04/100,000;the average annual incidence rate of varicella in males was 89.37/100,000,and in females,82.22/100,000,with the difference not being statistically significant;the age of onset of the disease was mainly in the group of people under 15 years of age,with a total of 190,021 cases reported(88.9%),with 5-9 years old(35.7%)as the high incidence age group.The incidence occupation was dominated by students in 133,733 cases(62.6%).Conclusion:The overall varicella epidemic in Chongqing is on the rise,and has obvious seasonal,regional and population distribution characteristics.The prevention and control of varicella epidemic should be strengthened,the publicity of varicella vaccine should be increased,and it is recommended that varicella vaccine should be included in the national immunization program. 展开更多
关键词 VARICELLA epidemiologic characteristics VACCINATION preventive and control measures
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The Utilizing of Agro-climatic Resources and Preventing Measures of Meteorological Disasters in Fushun 被引量:3
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作者 GAO Shang-wen1,LI Jin-yi2,LI Tao3,ZHANG Ying4,CHI Gui-fu5 1.Meteorological Bureau of Huanren Manchu Autonomy County of Liaoning Province,Huanren 117200,China 2.Liaoning Meteorological Bureau,Shenyang 110001,China +2 位作者 3.Liaoning Lightening Protection Technology Service Center,Shenyang 110015,China 4.Liaoning Meteorological Schoo,Shenyang 110015,China 5.Fushun Meteorological Bureau,Fushun 113006,China 《Meteorological and Environmental Research》 CAS 2011年第3期61-64,共4页
Based on the meteorological data in Fushun,Qingyuan and Xinbing from 1961 to 2008,the status quo of major agro-climatic resources in Fushun were analyzed.The abundant rainfall,sufficient sunshine and rich thermal reso... Based on the meteorological data in Fushun,Qingyuan and Xinbing from 1961 to 2008,the status quo of major agro-climatic resources in Fushun were analyzed.The abundant rainfall,sufficient sunshine and rich thermal resources were suitable for the development of modern agricultural production.The specific measures of effective use of climate resources were put forward according to geographical location and climatic characteristics of Fushun.The advantages of agro-climate resources were exerted for large edible fungi industry;effective accumulated temperature was applied for adjustment of plantation structure;three-dimensional agriculture in the mountainous area was developed vigorously.The main types of meteorological disasters constraining agricultural development in Fushun and their hazards were summarized,including droughts,floods,hail,etc.In addition,some scientific preventing measures of meteorological disaster were proposed. 展开更多
关键词 Agro-climatic resources Meteorological disasters preventing measures Fushun China
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Characteristics of coal resources in China and statistical analysis and preventive measures for coal mine accidents 被引量:1
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作者 Chaolin Zhang Peizhong Wang +2 位作者 Enyuan Wang Dapeng Chen Chao Li 《International Journal of Coal Science & Technology》 EI CAS CSCD 2023年第2期45-57,共13页
In the process of green and smart mine construction under the context of carbon neutrality,China's coal safety situation has been continuously improved in recent years.In order to recognize the development of coal... In the process of green and smart mine construction under the context of carbon neutrality,China's coal safety situation has been continuously improved in recent years.In order to recognize the development of coal production in China and prepare for future monitoring and prevention of safety incidents,this study mainly elaborated on the basic situation of coal resources and national mining accidents over the past five years(2017-2021),from four dimensions(accident level,type,region,and time),and then proposed the preventive measures based on accident statistical laws.The results show that the storage of coal resources has obvious geographic characteristics,mainly concentrated in the Midwest,with coal resources in Shanxi and Shaanxi accounting for about 49.4%.The proportion of coal consumption has dropped from 70.2%to 56%between 2011 and 2021,but still accounts for more than half of the all.Meanwhile,the accident-prone areas are positively correlated with the amount of coal production.Among different levels of coal mine accidents,general accidents had the highest number of accidents and deaths,with 692 accidents and 783 deaths,accounting for 87.6%and 54.64%respectively.The frequency of roof,gas,and transportation accidents is relatively high,and the number of single fatalities caused by gas accidents is the largest,about 4.18.In terms of geographical distribution of accidents,the safety situation in Shanxi Province is the most severe.From the time distribution of coal mine accidents,the accidents mainly occurred in July and August,and rarely occurred in February and December.Finally,the"4+4"safety management model is proposed,combining the statistical results with coal production in China.Based on the existing health and safety management systems,the manage-ments are divided into four sub-categories,and more specific measures are suggested. 展开更多
关键词 Resource characteristics Coal mine accidents Security situation Safety 4+4 model Preventive measures
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Risk assessment and landslide prevention design using numerical modelling——A case study in Qingliu,China 被引量:1
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作者 LI Cong-jiang HU Yu-xiang +2 位作者 JIANG Nan LI Hai-bo ZHOU Jia-wen 《Journal of Mountain Science》 SCIE CSCD 2023年第4期943-961,共19页
Numerous Quaternary deposits are existed in the mountainous areas of Southwest China,especially in the transition zone between the QinghaiTibet Plateau and the Sichuan Basin,where strong tectonic movements and frequen... Numerous Quaternary deposits are existed in the mountainous areas of Southwest China,especially in the transition zone between the QinghaiTibet Plateau and the Sichuan Basin,where strong tectonic movements and frequent climatic changes increase the potential landslides.The possible deformation and failure process of potential landslides and their impacts on the surrounding environment are important research topics.Field investigation and monitoring indicate that the Qingliu landslide in Xiameng town,Li County,Sichuan Province,China has been continuously deforming since August 2020.The deformation zone has a maximum deformation depth of approximately 18.9m,a total area of 54,628 m2,and a volume of 34.0×104 m3,which seriously threatens infrastructure projects and dwellings.As a result,understanding the Qingliu landslide evolution process,assessing the hazard risk,and planning disaster prevention measures are of great significance for reducing disaster loss.In this study,the mass movement process and hazard risk of the Qingliu landslide are evaluated,and the effects of different prevention measures are compared and discussed.By using the depth-integrated method,the mass movement of the Qingliu landslide is analyzed.The numerical simulation results indicate that the maximum velocity of the Qingliu landslide is approximately 37.5 m/s,and the duration of the landslide is approximately 90s.The simulated landslide can eventually form a deposited mass with a maximum deposit thickness of 19.4 m and an area of approximately 60,168.3 m2,thereby blocking the river and burying dwellings.Furthermore,a risk assessment of the Qingliu landslide under different forms of protection measures is also produced and discussed by considering the hazard level and economic vulnerability level of the affected area.Setting three layers of anti-slide piles on the deformation zone to reduce the hazard risk of the Qingliu landslide is a better choice.Our results may be useful for planning prevention measures and improving disaster emergency response systems. 展开更多
关键词 Qingliu landslide Numerical simulation Mass movement Risk assessment Prevention measures
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Construction Technology and Safety Risk Control Measures of Deep Foundation Pit Excavation 被引量:1
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作者 Mingmin Jiang 《Journal of World Architecture》 2023年第2期24-29,共6页
Deep foundation pit excavation is a basic and key step involved in modern building construction.In order to ensure the construction quality and safety of deep foundation pits,this paper takes a project as an example t... Deep foundation pit excavation is a basic and key step involved in modern building construction.In order to ensure the construction quality and safety of deep foundation pits,this paper takes a project as an example to analyze deep foundation pit excavation technology,including the nature of this construction project,the main technical measures in the construction of deep foundation pit,and the analysis of the safety risk prevention and control measures.The purpose of this analysis is to provide scientific reference for the construction quality and safety of deep foundation pits. 展开更多
关键词 Construction engineering Deep foundation pit excavation Construction technology Risk prevention and control measures
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Influencing factors and prevention measures of casing deformation in deep shale gas wells in Luzhou block,southern Sichuan Basin,SW China
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作者 HAN Lingling LI Xizhe +5 位作者 LIU Zhaoyi DUAN Guifu WAN Yujin GUO Xiaolong GUO Wei CUI Yue 《Petroleum Exploration and Development》 SCIE 2023年第4期979-988,共10页
Based on structural distribution and fault characteristics of the Luzhou block,southern Sichuan Basin,as well as microseismic,well logging and in-situ stress data,the casing deformation behaviors of deep shale gas wel... Based on structural distribution and fault characteristics of the Luzhou block,southern Sichuan Basin,as well as microseismic,well logging and in-situ stress data,the casing deformation behaviors of deep shale gas wells are summarized,and the casing deformation mechanism and influencing factors are identified.Then,the risk assessment chart of casing deformation is plotted,and the measures for preventing and controlling casing deformation are proposed.Fracturing-activated fault slip is a main factor causing the casing deformation in deep shale gas wells in the Luzhou block.In the working area,the approximate fracture angle is primarily 10°-50°,accounting for 65.34%,and the critical pore pressure increment for fault-activation is 6.05-9.71 MPa.The casing deformation caused by geological factors can be prevented/controlled by avoiding the faults at risk and deploying wells in areas with low value of stress factor.The casing deformation caused by engineering factors can be prevented/controlled by:(1)keeping wells avoid faults with risks of activation and slippage,or deploying wells in areas far from the faulting center if such avoidance is impossible;(2)optimizing the wellbore parameters,for example,adjusting the wellbore orientation to reduce the shear force on casing to a certain extent and thus mitigate the casing deformation;(3)optimizing the casing program to ensure that the curvature radius of the curved section of horizontal well is greater than 200 m while the drilling rate of high-quality reservoirs is not impaired;(4)optimizing the fracturing parameters,for example,increasing the evasive distance,lowering the single-operation pressure,and increasing the stage length,which can help effectively reduce the risk of casing deformation. 展开更多
关键词 Sichuan Basin Luzhou block shale gas well casing deformation mechanism fault activation risk assessment prevention measure
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Occurrence Characteristics and Prevention and Control Measures of Spodoptera frugiperda in Maize
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作者 Liping DONG Chunming LIU 《Plant Diseases and Pests》 CAS 2023年第3期8-9,共2页
Based on practical work experience,this paper analyzed the occurrence characteristics and control measures of Spodoptera frugiperda in maize.The measures including forecasting and early warning,regional prevention and... Based on practical work experience,this paper analyzed the occurrence characteristics and control measures of Spodoptera frugiperda in maize.The measures including forecasting and early warning,regional prevention and control,agricultural prevention and control,physical prevention and control,chemical prevention and control,and biological prevention and control can effectively control the damage of S.frugiperda and guarantee the safety of food production.The results will provide some reference for the prevention and control of S.frugiperda. 展开更多
关键词 Spodoptera frugiperda Occurrence characteristics Prevention and control measures MAIZE
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Occupation-related airborne diseases: Management and prevention of tuberculosis among nurses working in Ekiti State University Teaching Hospital
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作者 Olaolorunpo OLORUNFEMI Damilola SAMUEL +2 位作者 Joseph Adekunle ADEBIYI Adewole Peter AKINDIPE Wakeel Adelani TIJANI 《Journal of Integrative Nursing》 2023年第4期280-285,共6页
Objective:More health workers die from infectious diseases such as tuberculosis(TB)than from any other infectious agent,so the current study is designed to assess TB treatment and preventive measures as they relate to... Objective:More health workers die from infectious diseases such as tuberculosis(TB)than from any other infectious agent,so the current study is designed to assess TB treatment and preventive measures as they relate to nursing care practice.Materials and Methods:A cross-sectional study was conducted among 82 nurses from December 2022 to January 2023.The data were collected through a self-developed questionnaire and analyzed by frequency table and analysis of variance(ANOVA)statistics.Results:The researchers found that nurses have sufficient knowledge on Infection Prevention and Control(IPC)policy,but not all nurses follow this management protocol,and the reason for their action is addressed in this study.The management and preventive measures used by the participants were identified as:proper cough etiquette/hygiene,working in a well-ventilated area,use of mask,appropriate disposal of used items and so on was reported.Moreover,this study also discovered that there is a positive correlation between nurses who had received training in IPC policy and their use of airborne preventive measures for TB patients(F=1.87,P=0.002)as well as a positive correlation between the availability of resources and their adherence to the proper use of airborne preventive measures when caring for TB patients(F=1.96,P˂0.001).Conclusion:We proposed infection and control training for nurses and adequate equipment supplies to the TB ward which are required in quick TB diagnosis,and must be carried out on a regular basis by health-care personnel,for efficient nursing practice.Ensuring proper safety equipment and isolation units should be available and assessable for nurses or other health workers showing sign or symptoms of TB.Similarly,it is necessary for government to put in place the control and regulations that will safeguard nurses and mandate them to adopt TB prevention protocols,which will aid in lowering the prevalence of TB among nurses. 展开更多
关键词 AIRBORNE management of TB TUBERCULOSIS TB preventive measures TUBERCULOSIS
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上海市应对新型冠状病毒肺炎疫情综合防控策略 被引量:9
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作者 黄晓燕 陆殷昊 +5 位作者 陆韬宏 戴阳 付晨 吴寰宇 吴春峰 孙晓冬 《中国卫生资源》 北大核心 2021年第1期1-4,11,共5页
面对新型冠状病毒肺炎疫情,上海市坚决贯彻中央部署要求,采取了最严格、最全面、最积极的防控措施,在短时间内有效地遏制疫情蔓延势头。在疫情防控过程中,准确把握疫情形势变化,因时因势调整防控策略和措施,在严防境外疫情输入、有效处... 面对新型冠状病毒肺炎疫情,上海市坚决贯彻中央部署要求,采取了最严格、最全面、最积极的防控措施,在短时间内有效地遏制疫情蔓延势头。在疫情防控过程中,准确把握疫情形势变化,因时因势调整防控策略和措施,在严防境外疫情输入、有效处置本土疫情、统筹推动疫情防控和经济社会发展方面形成了行之有效的防控举措,构建起超大城市科学精准防控工作模式。 展开更多
关键词 新型冠状病毒肺炎COVID-19 本地疫情local epidemic 境外输入疫情imported epidemic 防控策略prevention and control strategy 防控措施prevention and control measure 精准防控precise prevention and control 上海市Shanghai
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Review of preventive and constructive measures for coal mine explosions:An Indian perspective 被引量:4
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作者 Santosh Kumar Ray Asfar Mobin Khan +3 位作者 Niroj Kumar Mohalik Debashish Mishra Somu Mandal Jai Krishna Pandey 《International Journal of Mining Science and Technology》 SCIE EI CAS CSCD 2022年第3期471-485,共15页
Firedamp and coal dust explosion constitute a lion’s share in mine accidents in a global mining scenario.This paper reports a list of mine explosion disasters since last two decades,a critical review of the different... Firedamp and coal dust explosion constitute a lion’s share in mine accidents in a global mining scenario.This paper reports a list of mine explosion disasters since last two decades,a critical review of the different prevention and constructive measures,and its recent development to avoid firedamp and coal dust explosion.Preventive legislation in core coal-producing countries,viz.China,USA,Australia,South Africa,and India related to firedamp and coal dust explosion are critically analysed.Accidents occurred due to explosion after Nationalisation of Coal Mines(1973)in India are listed.Prevention and constructive measures adopted in India are critically analysed with respect to the global mining scenario.Measures like methane credit concept,classification of mines/seams with respect to explosion risk zone,deflagration index;installation of automatic fire warning devices,canopy air curtain technology,explosion-prevention measures,such as fire-retardant materials,inhibitors,extinguishing agent,dust suppressor,and active explosion barrier are discussed in detail to avoid explosion and thereby adhering to zero accident policy due to coal mine explosion. 展开更多
关键词 Firedamp explosion Coal dust explosion Preventive measures Constructive measures LEGISLATION
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滁州地区水稻旱青立病的发生与防治(英文)
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作者 黄自安 刘小林 +2 位作者 倪春耕 胡宏云 王振荣 《Plant Diseases and Pests》 CAS 2010年第2期1-4,9,共5页
[Objective] Cause of disease and control measures of rice dry straight head disease in Chuzhou area was discussed. [Method] Field investigation and comprehensive analysis of the literature were conducted to study the ... [Objective] Cause of disease and control measures of rice dry straight head disease in Chuzhou area was discussed. [Method] Field investigation and comprehensive analysis of the literature were conducted to study the reason of dry straight head disease in Chuzhou area, some common control measures were summarized. [Result] The characteristic of main symptoms included incidence of single plant, incidence of cluster, inclusive incidence between clusters. Sporadic normal rice grains existed in diseased spikes under the incidence of grains. The main pathogenic factors of dry straight head disease were concentration of arsenic or lack of elements, belonging to physiological disease, while the effect of other pathogenic factors could not be excluded. Heavy application of organic fertilizer and crop rotation should be conducted, white soil field should be paid more attention about the changes of disease condition with more wet and dry roasting over fields. Application time of micro fertilizer should be chosen properly, while tillering final stage and pollen formation stage must be adjusted to avoid high temperature, irrigation management should also be improved. [Conclusion] The study could provide reference for preventing rice dry straight head disease. 展开更多
关键词 Rice dry straight head disease Research SYMPTOM Cause of disease Arsenic concentration Prevention and control measure
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Assessment on the Effects of Hepatitis B Prevention and Control Measures in Western China:A Comparison of Three Population-based Serosurveys 被引量:5
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作者 CHEN Hui LIU Nan +6 位作者 JI Zhao Hua PU Zhong Shu GUO Zhi Wen GAO Jie SHAO Zhong Jun LIU Yi Wen YAN Yong Ping 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2020年第10期735-744,共10页
Objective Despite the remarkable progress in efforts to control disease spread,the nationwide elimination of hepatitis B in China is still hindered by the persistently high rate of hepatitis B virus(HBV)infection in W... Objective Despite the remarkable progress in efforts to control disease spread,the nationwide elimination of hepatitis B in China is still hindered by the persistently high rate of hepatitis B virus(HBV)infection in Western China.This study aimed to evaluate the strategy of hepatitis B prevention and control in Western China and identify potential areas and strategies for improvement.Methods Susceptible population vaccination,health education,professional training of doctors,and other prevention and control measures have been implemented in Wuwei city since 2010.Data were obtained from three representative cross-sectional serosurveys conducted in 2010,2013,and 2015.The serum samples were subjected to enzyme-linked immunosorbent assays to detect the following seromarkers:HBV surface antigen(HBsAg),antibody against hepatitis B surface antigen(anti-HBs),and antibody against hepatitis B core antigen(anti-HBc).Estimates of variance were determined using Taylor series linearization methods.Results The three serosurveys revealed decreases in the prevalence of HBsAg(7.19% in 2010 vs.6.51% in 2013 vs.5.87% in 2015)and anti-HBc positivity(43.89%vs.32.87%vs.28.46%)and an increase in the prevalence of anti-HBs positivity(49.07%vs.53.66%vs.53.72%)over time.From 2010 to 2015,the legally reported incidence of hepatitis B in Wuwei city decreased from 686.53/100,000 to 53.72/100,000.Notably,persistently high HBsAg-positive rates(above 5.40%)were observed among subjects aged 20–69 years old in the three serosurveys;the prevalence of HBsAg was above 1% among children younger than 10 years old.Furthermore,rural subjects had higher rates of HBsAg and anti-HBc positivity than their urban counterparts(6.04%vs.4.83% and 30.26%vs.20.35%,respectively)in 2015 but had a lower rate of anti-HBs positivity(49.68 vs.55.18%).Multivariate regression analysis showed that age,urban and rural areas,and education level were the main factors affecting HBV infection.Conclusion Although vaccine-based prevention and control measures reduced the rate of HBV infection in Wuwei City over time,the hepatitis B infection rate in children younger than 10 years was still higher than the national average level.Therefore,the prevention and control of mother-to-child transmission and the management of the infected should be the focus of future prevention and control work. 展开更多
关键词 Hepatitis B Prevention a n d control measures SEROSURVEY Western China
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Field investigation and numerical simulation on rockfalls in Zhangmu Town, Tibet, China 被引量:1
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作者 WANG Zhong-fu LIU Han-dong +1 位作者 HE Si-ming BI Dan 《Journal of Mountain Science》 SCIE CSCD 2022年第3期740-755,共16页
Zhangmu Town in Tibet of China,which lies in the southern piedmont of the median Himalayas,is a small but strategically important port of trade exchange between China and Nepal.Many rockfall events have occurred in Zh... Zhangmu Town in Tibet of China,which lies in the southern piedmont of the median Himalayas,is a small but strategically important port of trade exchange between China and Nepal.Many rockfall events have occurred in Zhangmu since 1970,resulting in huge economic losses and serious influence on the bilateral trade.We conducted a detailed field investigation on the high and steep slope in Zhangmu Town,and analyzed the distribution features,stability,failure modes and evolution of dangerous rocks of potential rockfalls.Then we numerically simulated the movement path,velocity and accumulation forms of the rockfall with PFC^(3D) program.The results indicated that the dangerous rock belt could be divided into three sections,namely,unstable section,slightly stable section and basically stable section.It was estimated that the rock debris and single dangerous rock would be unstable in the case of earthquakes or rainstorms.Due to the terrain constraints,the fallen rocks would scatter near the mouth of the Zhangmu ditch and in the Buqu River through multiple times of rolling,collision-induced diversion and bouncing.Without reinforcement,the rockfall could cause serious damage to the car parks,gas stations and National Highway 318 along the line from Zhangmu Town to Zhangmu ditch.Based on the field survey and numerical simulation,we recommended rockfall removal and interception as the major prevention measures,and protective sheds as auxiliary measure. 展开更多
关键词 ROCKFALLS Failure mode Stability analysis Numerical simulation Micro parameters Prevention measures
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Study on Cotton Verticillium Wilt 被引量:1
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作者 Bing CHEN Zheng LIU 《Plant Diseases and Pests》 CAS 2012年第2期15-20,23,共7页
The pathogen, characteristics, pathogenic mechanism, infection cycle, occurrence regularity and damage symptom of cotton Verticillium wilt are expounded in the paper. The paper puts forward the strategy of protecting ... The pathogen, characteristics, pathogenic mechanism, infection cycle, occurrence regularity and damage symptom of cotton Verticillium wilt are expounded in the paper. The paper puts forward the strategy of protecting disease-free area first, planting resistant varieties and rational rotation in severe area and strengthening the field management, as well as combining with biological control and chemical control methods to effectively control infection and spread of pathogen, so as to provide certain theoretical basis for reducing the damage of cotton Verticillium wilt and improving yield and quality of cotton. 展开更多
关键词 Cotton Verticillium wilt Pathogenic characteristics Occurrence regularity Damage symptoms Prevention measures China
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Rusting behavior and preventative measures of hot-rolled steel plates for automobile applications 被引量:1
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作者 QI Huibin QIAN Yuhai ZHANG Hua ZHOU Qingjun WANG Wei 《Baosteel Technical Research》 CAS 2009年第2期3-6,共4页
As one of the important categories of hot-rolled products, hot-rolled steel plates for automobile applications generally undergo uniform corrosion or localized corrosion according to different environments of manufact... As one of the important categories of hot-rolled products, hot-rolled steel plates for automobile applications generally undergo uniform corrosion or localized corrosion according to different environments of manufacturing, transportation and/or storage of the plates. General corrosion often takes place on the surface of a plate in the exterior part of a package, and only reduces the thickness of the plate and slightly increases the roughness of the surface; however, localized corrosion on the surface of a plate inside the package is likely to result in the formation of pit-like defects on the substrate of the plate, which cannot be removed thoroughly by normal acid pickling or sand blasting, and affects the application of the plate. This research report analyzes the phenomena and characteristics of the rusting behavior of hot- rolled steel plates for automobile applications, and the influencing factors are summaried. The corresponding preventative measures are proposed. 展开更多
关键词 hot-rolled steel plates for automobile applications rusting pit-like defects preventative measures
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Investigation on a Typical Scattered Lightning Strike Case and Response Measures 被引量:1
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作者 Wei Li Guiqiong Zhao Ping Wang 《Meteorological and Environmental Research》 CAS 2013年第7期8-9,14,共3页
From July 31 to August I in 2008, a strong thunderstorm process occurred in Neijiang of Sichuan Province, and a strange scattered light- ning strike phenomenon happened in office building of Dongxing Meteorological Bu... From July 31 to August I in 2008, a strong thunderstorm process occurred in Neijiang of Sichuan Province, and a strange scattered light- ning strike phenomenon happened in office building of Dongxing Meteorological Bureau in Neijiang. Through a series of investigations and analyses, we found occurrence reason of the scattered lightning strike and improved lightning protection measures. 展开更多
关键词 Scattered lightning strike High elevated lightning rod Preventive measures China
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Prevention and management of wind-blown sand damage along Qinghai-Tibet Railway in Cuonahu Lake area 被引量:3
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作者 YinHai Yang BenZhen Zhu +2 位作者 FuQiang Jiang XiLai Wang Yong Li 《Research in Cold and Arid Regions》 2012年第2期132-139,共8页
This paper analyzes the characteristics of climate, geology and geomorphology, vegetation, and sand dune distribution in the Cuonahu Lake area beside the Qinghai-Tibet Railway. The types and causes of railway blown-sa... This paper analyzes the characteristics of climate, geology and geomorphology, vegetation, and sand dune distribution in the Cuonahu Lake area beside the Qinghai-Tibet Railway. The types and causes of railway blown-sand hazards are discussed, and the effectiveness of various sand-controlling measures is assessed. From the perspective of integrated management, a sand-controlling system that combines several engineering measures, including nylon net sand barriers, concrete sand barriers, movable-board sand barriers, sand interception ditches, gravel/rock cover, film sandbags, and permanent vegetation is most beneficial. 展开更多
关键词 Qinghai-Tibet Railway Cuonahu Lake wind-blown-sand disaster prevention measures
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Hydrobios and Control of Eutrophication in Dongping Lake,Shandong Province 被引量:1
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作者 DOU Suzhen SUN Zhaocai +4 位作者 CAO Ying MA Yumei ZHANG Jingfu LIU Guicheng KOU Xiaoyan 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2000年第2期329-333,共5页
The Hydrobios in Dongping Lake, Shandong Province, mainly includes phytoplankton, zooplankton, benthic animals, fishes and hydrophytic vascular plants. Nitrogen and phosphorus are the restrictive factors for the growt... The Hydrobios in Dongping Lake, Shandong Province, mainly includes phytoplankton, zooplankton, benthic animals, fishes and hydrophytic vascular plants. Nitrogen and phosphorus are the restrictive factors for the growth and propagation of hydrophyta, therefore the key to the prevention and control of eutrophication in lakes lies in the control of the contents of the two elements in the water. Artificial fishing of algae can reduce the concentrations of trophic substances such as nitrogen and phosphorus in the water bodies, and biological measures may decrease the contents of these trophic substances in the bottom sediments and the water bodies, thereby playing an active role in modifying the eutrophication of the lake. 展开更多
关键词 Dongping Lake hydrobios EUTROPHICATION biological evaluation prevention and control measures
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