检索结果-南通市图书馆

Reduced efficacy of single-dose albendazole against Ascaris lumbricoides, and Trichuris trichiura, and high reinfection rate after cure among school children in southern Ethiopia: a prospective cohort study

引用

Infectious Diseases of Poverty 2024年第1期13卷 95-96页

作者： Tigist Dires Gebreyesus Eyasu Makonnen Tafesse Tadele Kalkidan Mekete Habtamu Gashaw heran gerba Eleni Aklillu Department of Global Public Health Karolinska Institutet Karolinska University Hospital Stockholm Sweden Ethiopian Food and Drug Authority Addis Ababa Ethiopia Center for Innovative Drug Development and Therapeutic Trials for Africa College of Health Sciences Addis Ababa University Addis Ababa Ethiopia Departments of Pharmacology and Clinical Pharmacy College of Health Sciences Addis Ababa University Addis Ababa Ethiopia College of Medicine and Health Sciences Hawassa University Hawassa Ethiopia Ethiopian Public Health Institute Addis Ababa Ethiopia

Background Mass drug administration(MDA)program of albendazole to at-risk populations as preventive chemo-therapy is the core public health intervention to control soil-transmitted helminths(STHs).Achieving this goal relies on drug effectiveness in reducing the parasite reservoirs in the community and preventing *** assessed the effcacy of albendazole against STH parasite infection and reinfection status after *** A total of 984 schoolchildren infected with at least one type of STH parasite(hookworm,Ascaris lumbri-coides,Trichuris trichiura)in southern Ethiopia were enrolled and received albendazole and praziquantel in MDA campaign conducted from January to March *** exams at week-4 and at week-8 of post-MDA were done using Kato Katz *** primary outcome was effcacy assessed by cure rate(CR)and fecal egg reduction rates(ERRs)at four weeks of *** secondary outcome was reinfection status defined as parasite egg positivity at eight weeks among those who were cured at 4 weeks of *** comparisons in CR and related factors were assessed with chi-square or Fisher's exact *** of CR were examined through univariate and multi-variate regression *** The overall CR and ERR for hookworm infection were 97.2%(95%CI:94.6-99.4)and 97.02%,*** overall CR and ERR for *** were 71.5%(95%CI:68.3-74.6)and 84.5% *** overall CR and ERR and for *** were 49.5%(95%CI:44.8-54.2)and 68.3%,*** CR among moderate *** infec-tion intensity was 28.6%.Among children cured of hookworm,*** and *** at week 4 post-MDA,4.6%,18.3% and 52.4% became reinfected at week-8 post-MDA,*** lower CR(36.6%)and higher reinfection after cure(60.6%)among *** and *** coinfected children than *** only(CR=69.6%,reinfection rate=15.1%)or *** only infected children(CR=55.6%,reinfection rate=47.1%)was obse

关键词： Soil transmitted helminths Neglected tropical diseases Preventive chemotherapy Albendazole School age children Ethiopia

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Airside fin efficiencies for finned-tube heat exchangers with forced convection

引用

Science China(Technological Sciences) 2011年第9期54卷 2468-2474页

作者： LI Cheng LI JunMing ZHANG heran Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Department of Thermal Engineering Tsinghua University Beijing 100084 China

The heat transfer and mass transfer fin efficiencies were analyzed numerically to show that popular models for heat transfer fm efficiency for circular fins are not always reasonable. The numerical results show that the effective heat transfer area of a circular fin increases several times faster than that of a straight fin for the same tube radius. Then, a simple but accurate heat transfer fin efficiency model was developed and verified by numerical results for a wide range of fin designs. This model predicts the heat transfer fin efficiency with absolute errors of less than 1%. The heat transfer and mass transfer fin efficiencies were found to be quite different for typical air flow with low relative humidity. Thus, these two fin efficiencies should not be assumed to be equal and a mass transfer fin efficiency model was developed, based on the heat transfer fin efficiency model. These heat transfer and mass transfer fin efficiencies are very useful for more accurate prediction for a wide range of practical applications.

关键词： circular flu efficiency heat transfer mass transfer humid air condensation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

优化HS-SPME-GC-MS方法表征香菇不同成熟阶段的关键挥发性化合物

引用

食品科学 2025年第1期46卷 74-82页

作者：侯振山许贺然夏榕嵘李昀婷王娅飞潘松辛广沈阳农业大学食品学院辽宁沈阳110866

通过优化的顶空固相微萃取结合气相色谱-质谱联用技术鉴定香菇不同成熟阶段挥发性化合物,并采用气味活性值(odor activity value,OAV)和偏最小二乘判别分析(partial least squares discriminant analysis,PLS-DA)进行分析。结果表明:最... 详细信息

通过优化的顶空固相微萃取结合气相色谱-质谱联用技术鉴定香菇不同成熟阶段挥发性化合物,并采用气味活性值(odor activity value,OAV)和偏最小二乘判别分析(partial least squares discriminant analysis,PLS-DA)进行分析。结果表明:最佳提取条件为1.0 g香菇样品在50℃提取25 min,解吸3 min;在香菇不同成熟阶段共鉴定出71种挥发性化合物,不同成熟阶段挥发性化合物种类和含量存在显著差异(P1和OAV≥1,是香菇不同成熟阶段最重要的差异挥发性化合物。本研究为探究香菇成熟过程中香气形成机制提供一定理论依据。

关键词：香菇成熟阶段香气挥发性化合物顶空固相微萃取气相色谱-质谱偏最小二乘判别分析

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Prediction of cutting force in ultra-precision machining of nonferrous metals based on strain energy

引用

Nanotechnology and Precision Engineering 2021年第4期4卷 1-11页

作者： Ying Wang Zewei Yuan Tianzheng Wu heran Yan School of Mechanical Engineering Shenyang University of TechnologyShenyang 110870China

The effects of the nonuniform cutting force and elastic recovery of processed materials in ultra-precision machining are too complex to be treated using traditional cutting theories,and it is necessary to take account of factors such as size effects,the undeformed cutting thickness,the tool blunt radius,and the tool rake ***,this paper proposes a new theoretical calculation model for accurately predicting the cutting force in ultra-precision machining,taking account of such *** model is first used to analyze the material deformation of the workpiece and the cutting force distribution along the cutting edge of a diamond *** size of the strain zone in different cutting deformation zones is then determined by using the distribution of strain work per unit volume and considering the characteristics of the stress distribution in these different deformation ***,the cutting force during ultra-precision machining is predicted precisely by calculating the material strain energy in different zones.A finite element analysis and experimental data on ultra-precision cutting of copper and aluminum are used to verify the predictions of the theoretical *** results show that the error in the cutting force between the calculation results and predictions of the model is less than 14%.The effects of the rake face stress distribution of the diamond tool,the close contact zone,and material elastic recovery can be fully taken into account by the theoretical ***,the proposed theoretical calculation method can effectively predict the cutting force in ultra-precision machining.

关键词： Ultra-precision cutting Diamond tool Cutting force Strain energy Finite element analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Bus Arrival Time Prediction Based on Mixed Model

引用

China Communications 2017年第5期14卷 38-47页

作者： Jinglin Li Jie Gao Yu Yang heran Wei State Key Laboratory of Network and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China

How to predict the bus arrival time accurately is a crucial problem to be solved in Internet of Vehicle. Existed methods cannot solve the problem effectively for ignoring the traffic delay jitter. In this paper,a three-stage mixed model is proposed for bus arrival time prediction. The first stage is pattern training. In this stage,the traffic delay jitter patterns(TDJP)are mined by K nearest neighbor and K-means in the historical traffic time data. The second stage is the single-step prediction,which is based on real-time adjusted Kalman filter with a modification of historical TDJP. In the third stage,as the influence of historical law is increasing in long distance prediction,we combine the single-step prediction dynamically with Markov historical transfer model to conduct the multi-step prediction. The experimental results show that the proposed single-step prediction model performs better in accuracy and efficiency than short-term traffic flow prediction and dynamic Kalman filter. The multi-step prediction provides a higher level veracity and reliability in travel time forecasting than short-term traffic flow and historical traffic pattern prediction models.

关键词： bus arrival time prediction traffic delay jitter pattern internet of vehicle

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Climate change adaptation to escape the poverty trap:role of the private sector

引用

Ecosystem Health and Sustainability 2016年第10期2卷 14-22页

作者： Shixiong Cao heran Zheng School of Economics and Management Yan’an UniversityYan’anShanxi716000 China Tyndall Centre for Climate Change Research School of International DevelopmentUniversity of East AngliaNorwichNorfolkNR47TJ UK School of Economics and Management Beijing Forestry UniversityBeijing100083 China

Climate change adaptation and poverty alleviation call for an integrated strategy,because poverty exacerbates the vulnerability to climate change and vice *** private sector,which has traditionally been excluded from adaptation planning,may contribute greatly to the development of an integrated ***,we identify the differences in adaptation trajectories between the private sector and communities by proposing a conceptual framework and report on a case study in a dryland area of China,where the private sector led a successful adaptation and poverty alleviation *** found that their win-win strategy achieved both climate change adaptation and development,thereby helping a disadvantaged community to escape the poverty trap and achieve sustainable *** private sector played a dominant role in the response,as this sector can adapt in ways that are not possible for governments or *** suggest that participatory governance that includes private-sector stakeholders is more likely to achieve sustainable development.

关键词： adaptation climate change framework poverty alleviation private sector.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

TXV Technology:The cornerstone of 3D system-in-packaging

引用

Science China(Technological Sciences) 2022年第9期65卷 2031-2050页

作者： ZHAO heran CHEN MingXiang PENG Yang WANG Qing KANG Min CAO LiHua School of Mechanical Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China The 47th Institute of China Electronics Technology Group Corporation Shenyang 110000China State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074China School of Aerospace Engineering Huazhong University of Science and TechnologyWuhan 430074China Institute of Metal Research Chinese Academy of SciencesShenyang 110016China Shenyang National Laboratory for Materials Science Shenyang 110016China

System-in-packaging(Si P) can realize the integration and miniaturization of electronic devices and it is significant to continue Moore’s ***-X-via(TXV) technology is the cornerstone of 3 D-SiP,which enables the vertical stacking and electrical interconnection of electronic *** originated from through-hole(TH) in PCB substrates and evolved in different substrate materials,such as silicon,glass,ceramic,and *** work provides a comprehensive review of four distinguishing TXV technologies(through silicon via(TSV),through glass via(TGV),through ceramic via(TCV),and through mold via(TMV)),including the fabrication mechanisms,processes,and *** TXV technology has unique characteristics and owns particular processes and *** process methods,key technologies,application fields,and advantages and disadvantages of each TXV technology were *** cutting-edge through-hole process and development direction were reviewed.

关键词： through silicon via(TSV) through ceramic via(TCV) through glass via(TGV) through mold via(TMV) 3D packaging chip stacking interposer

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Performance simulation and optimization of new radiant floor heating based on micro heat pipe array

引用

Building Simulation 2022年第7期15卷 1295-1308页

作者： heran Jing Zhenhua Quan Ruixue Dong Limin Hao Yunhan Liu Yaohua Zhao Beijing Key Laboratory of Green Built Environment and Energy Efficient Technology Beijing University of TechnologyBeijing 100124China

This paper proposes two new radiant floor heating structures based on micro heat pipe array(MHPA),namely cement-tile floor and keel-wood *** numerical models for these different floor structures are established and verified by *** temperature distribution and heat transfer process of each part are comprehensively obtained,and the structure is *** results show that the cement-tile floor has the better heat transfer performance of the *** under the same inlet water temperature and flow rate,the keel-wood floor's surface temperature distribution is about 2℃ lower than that of the cement-tile *** inlet water temperature of cement-tile floor is about 10℃ lower than that of keel-wood structure when the floor surface temperature is the *** a longitudinal heat transfer above MHPA,the floor surface temperature decreases by 0.5℃ for every 10 mm filling layer *** order to reduce the non-uniformity of the floor's surface temperature and improve the thermal comfort of the heated room,the optimal structure for a floor is given,with the maximum surface temperature difference reduced by 3.35℃.We used research focusing on new radiant floor heating,with advantages including high efficiency heat transfer,low water supply temperature,simple waterway structure,low resistance and leakage risk,to provide theory and data to support the application of an effective radiant floor heating based on MHPA.

关键词： radiant floor heating micro heat pipe array numerical simulation heat transfer

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Quaternary Pan-lake (Overflow) Period and Paleoclimate on the Qinghai-Tibet Plateau

引用

Acta Geologica Sinica(English Edition) 2005年第6期79卷 821-834页

作者： ZHENG Mianping YUAN heran ZHAO Xitao LIU Xifang R＆D Center for Saline Lake and Epithermal Deposit Chinese Academy of Geological Sciences Beijing 100037 Institute of Mineral Resources Chinese Academy of Geological Sciences Beijing 100037 Open Laboratory of Saline Lake Resources and Environment Chinese Academy of Geological Sciences Beijing 100037

Lake geomorphology and high-level lacustrine deposits since the mid-late Pleistocene are well preserved in lakes of the Qinghai-Tibet Plateau. According to geological surveys of 17 lake districts in different locations of the plateau, combined with interpretations of satellite images and topographic maps, the authors studied the timing of formation and scopes of the pan-lake areas of the plateau and their paleoclimate. The latest two high lake levels （overflow surfaces） on the Qinghai-Tibet Plateau in the Quaternary occurred at N40 to 30/35 ka and N65 to 53 ka respectively. In these time intervals, the plateau was covered by huge interconnected pan-lake systems with a total area of -36 km^2 and a total volume of lake water of 〉530 million km^2, which are about 38 times and 659 times larger than those of the modern lakes respectively. Before this pan-lake period in the late Pleistocene, there had been three high lake levels that occurred at N 132-112 ka, 110-95 ka and 91-72/-83-75 ka respectively, suggesting that the late Quaternary climate on the plateau was unstable and changed rapidly. The -40-30 ka high lake level also appeared in the Tengger desert north of the plateau, suggesting that there existed very strong summer monsoons from South Asia then; the variation in solar radiation with a 20,000 precessional period has special importance for the high-altitude Qinghai-Tibet Plateau in the low-latitude zone of the Earth. Around 30 ka, the pan-lakes at the peripheries of the Qinghai-Tibet Plateau drained out suddenly with rapid uplift of the plateau and cooling. In a short time the huge amount of cold lake water emptied into the Indian Ocean and Western Pacific. The draining event of the pan-lakes brought about the environmental changes of rivers and lakes at peripheries of the plateau.

关键词： Qinghai-Tibet Plateau Quaternary pan-lake paleoclimate paleo-monsoon draining event of pan-lakes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Evaluation of umami taste components of mushroom (Suillus granulatus) of different grades prepared by different drying methods

引用

Food Science and Human Wellness 2020年第2期9卷 192-198页

作者： Xiuhong Zhao Yunyun Wei Xue Gong heran Xu Guang Xin Grain College Shenyang Normal UniversityShenyang 110034China College of Food Science Shenyang Agricultural UniversityShenyang 110866China

Suillus granulatus is a valuable wild edible mushroom with a strong umami *** grades of *** were dried by different methods,including natural air drying(ND),hot air drying(HAD),vacuum drying(VD),and freeze drying(FD).Results showed that VD samples of all grades had the highest equivalent umami concentration(EUC)value(P<0.05).The second grade of ND samples showed the highest EUC value(P<0.05).The first grade of HAD samples showed the highest EUC value(P<0.05).The third grade of FD samples showed the highest EUC value(P<0.05).The third grade of VD samples had a higher EUC value than the other grades of samples dried by *** tongue results indicated no significant differences between samples of all grades dried by all ***,umami taste components are affected by drying method and *** is an appropriate drying method for all sample ***,HAD,and FD are suitable for second-,first-,and third-grade samples,respectively.

关键词： Suillus granulatus drying methods grade umami taste components

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：