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Morphological Characterization of Some Water Yam （dioscorea alata L.） Germplasm in Ghana

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Journal of Agricultural Science and Technology(B) 2014年第7期4卷 518-532页

作者： Michael Anokye joseph Paddy Tettch Emmanuel Otoo department of Crop Science University of Cape Coast Ghana Crops Research Institute Kumasi 3785 Ghana

The Asiatic dioscorea alata yam species is an important food crop, especially in Cote d＇lvoire. It has high yield and stores longer than dioscorea cayenensis/rotundata yam and therefore fills the hunger gap created when other yam types arc not available. However, very little research has been done on it. Several cultivars are susceptible to pests and diseases and lack the aesthetic values of smooth skin and elegant tuber shape ofdioscorea rotundata that appeal to consumers in the market. This study therefore sought to establish the genetic variability and relationships among 35 accessions of Ghanaian dioscorea alata together with 14 accessions introduced from International Institute of Tropical Agriculture in Nigeria. Morphological variation was studied to establish genetic relationship among 49 accessions assembled as dioscorea alata in Ghana. Principal component analysis （PCA） indicated that the first two principal components accounted for 25.27% of total variation from accessions with PCA1 and PCA2, contributing 13.92% and 11.35%, respectively. Cluster analysis performed clearly separated the 49 accessions into three main groupings using unweighted neighbour-joining method. Morphological descriptors were able to group the accessions into distinct clusters independent of place of collection.

关键词： dioseorea alata germplasm characterization morphological Ghana.

Real-time monitoring system for quality monitoring of jujube slice during drying process

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International Journal of Agricultural and Biological Engineering 2022年第3期15卷 234-241页

作者： Yuxue Cao Xuedong yao Yongzhen Zang Yubao Niu Hongwei Xiao Huan Liu Rongguang Zhu Xia Zheng Qiang Wang Xiangnan Zhang Shiyu Wei College of Mechanical and Electrical Engineering Shihezi UniversityShihezi 832000XinjiangChina Key Laboratory of Northwest Agricultural Equipment Ministry of Agriculture and Rural AffairsShihezi 832000XinjiangChina Key Laboratory of Modern Agricultural Machinery Corps Shihezi 832000XinjiangChina College of Engineering China Agricultural UniversityBeijing 100083China College of Mechanical Engineering and Automation Northeastern UniversityShenyang 110819China

The real-time monitoring and prediction system for quality attributes of jujube slices during the drying process was designed to solve the problem of destructive and inconvenient of the traditional quality detection method and realize quality online ***,machine vision and automatic weighing were employed to monitor the color and moisture content changes of jujube slices in ***,correlation models between color parameter(a^(*)value)and nutritional quality attributes(vitamin C,reducing sugar)were established to predict vitamin C and reducing sugar content of jujube slices during the drying ***,the upper computer monitoring software was integrated and designed based on LABVIEW virtual instrument,and the real-time monitoring system was tested and *** showed that:the changing trends of color(L^(*),a^(*),and b^(*)values)monitored by the system were basically the same as the results detected by color difference meter,and the average errors of L^(*),a^(*),and b^(*)values were 0.93,0.52,and 0.73,*** average relative error of moisture content between the system monitoring and manual static detection was 0.18%.The average error of vitamin C and reducing sugar content between the system prediction and manual detection were 50 mg/100 g in dry basis and 0.71g/100 g in dry basis,*** current work can provide a useful reference for real-time monitoring of quality attributes of fruits and vegetables during the drying process.

关键词： jujube slice quality attributes real-time monitoring system drying process

H7N9 pneumonia with vitamin d insufficiency

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H7N9 pneumonia with vitamin D insufficiency

基于d-S证据理论的灰色定权聚类综合后评价方法

中华医学会第十二次全国内分泌学学术会议

作者： Gang Chen Jin yao Lixiang Lin Fujian Provincial Hospital

A 57-year-old Chinese male was admitted to Fujian Provincial Hospital in April 2013 because of a fever,caugh and dyspnea. The patient had been well until 7 days before admission, when fever and a cough productive of w...

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系统工程理论与实践 2009年第5期29卷 123-128页

作者：王育红党耀国南京航空航天大学经济与管理学院南京210016

结合灰色定权聚类评估模型和d-S证据理论对项目综合后评价方法进行研究.应用差异信息序列熵理论,根据指标所蕴含信息量的多少确定聚类指标的权重;根据所得到的灰色定权聚类系数矩阵并把该矩阵经过适当转换,把每一个聚类对象作为影响后... 详细信息

结合灰色定权聚类评估模型和d-S证据理论对项目综合后评价方法进行研究.应用差异信息序列熵理论,根据指标所蕴含信息量的多少确定聚类指标的权重;根据所得到的灰色定权聚类系数矩阵并把该矩阵经过适当转换,把每一个聚类对象作为影响后评价结果的一条证据,考虑到证据推理中零绝对化问题存在的可能性,给出了解决办法;利用dempster合成法则,得到了辨识框架中各子集的信度函数,根据信度函数最大值确定项目综合后评价的结果.可以充分利用定权聚类中所得到各聚类对象所属灰类的信息,减少了直接使用聚类系数最大化方法确定评价对象所属灰类造成的信息损失,最后通过一个算例说明了该方法的实用性和有效性。

关键词：灰色聚类评估信息熵证据理论合成法则信息融合

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黏土的应力路径本构模型

岩土力学 2007年第4期28卷 649-654页

作者：路德春姚仰平北京航空航天大学土木工程系北京100083

根据黏土应力-应变曲线的特点及其应力路径的相关特性,将作者所建立的砂土应力路径本构模型扩展用于黏土,建立了黏土的应力路径本构模型,利用变换应力方法将SMP准则用于黏土的应力路径本构模型,使模型得到了合理的三维化。黏土的应力路... 详细信息

根据黏土应力-应变曲线的特点及其应力路径的相关特性,将作者所建立的砂土应力路径本构模型扩展用于黏土,建立了黏土的应力路径本构模型,利用变换应力方法将SMP准则用于黏土的应力路径本构模型,使模型得到了合理的三维化。黏土的应力路径模型与修正剑桥模型相比,在双向加载A区和卸载d区二者完全相同;在单向加载B区和F区,两种模型均可计算塑性应变;特别是在C区和E区,黏土的应力路径模型可计算塑性应变,而修正剑桥模型的塑性应变为0。通过与修正剑桥模型比较和对藤森黏土试验结果的预测,反映了黏土应力路径本构模型描述黏土在不同应力路径条件下应力-应变特性的优越性。

关键词：砂土黏土应力路径本构模型修正剑桥模型

Rabeprazole 10 mg versus 20 mg in preventing relapse of gastroesophageal reflux disease： a meta-analysis

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Chinese Medical Journal 2013年第16期126卷 3146-3150页

作者： ZHU Hai-di WANG Heng XIA Xian-ming XU Shu-man LAN yao Huazhong University of Science and Technology Wuhan Hubei430030 China The Fourth Affiliated Hospital of Anhui Medical University HefeiAnhui 230022 China Social Science and Health Management School Anhui MedicalUniversity Hefei Anhui 230032 China

Background Several randomized controlled trials （RCTs） have compared endoscopic and symptomatic relapses in patients with erosive gastroesophageal reflux disease （GERd）.We have summarized current evidence for rabeprazole 10 or 20 mg once daily for GERd maintenance treatment over 1 or 5 *** MEdLINE,EMBASE,and the Cochrane Central Register of Controlled Trials were searched,through August 2012,for eligible RCTs of adults with erosive *** efficacies of rabeprazole 10 and 20 mg/d were *** The search identified 288 citations,and five RCTs containing 1480 patients were considered *** relapse rates did not differ significantly between patients treated with rabeprazole 10 and 20 mg/d for 1 year （relative risk （RR）=1.29; 95％ confidence interval （CI）：0.97-1.72）,but differed in patients treated for 5 years （RR=1.274; 95％ CI：1.005-1.615）.Endoscopic relapse rates differed significantly between rabeprazole 10 and 20 mg/d for 1 year （RR=1.92;95％ CI：1.21-3.06）,for 5 years （RR=1.667; 95％ CI：1.073-2.589）,and in combined 1-and 5-year maintenance trials （RR=1.785; 95％ CI：1.298-2.456）.Conclusion Rabeprazole 20 mg/d was superior to rabeprazole 10 mg/d in preventing endoscopic relapse of erosive GERd,but that the two dosages were equivalent in symptomatic relief over 1 year.

关键词： gastroesophageal reflux disease proton pump inhibitors rabeprazole relapse endoscopy heartburn

基于PVT集热/蒸发器的补气增焓热泵性能分析

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太阳能学报 2022年第6期43卷 138-144页

作者：寿春晖姚剑郑思航彭浩赵耀代彦军浙江浙能技术研究院有限公司杭州310001 浙江省太阳能利用及节能技术重点实验室杭州310001 上海交通大学机械与动力工程学院太阳能发电与制冷教育部工程研究中心上海200240

传统直膨式太阳能辅助热泵系统在低温环境适应性欠佳,影响其在寒冷地区使用,通过采用补气增焓技术可以有效提高其低温条件下的供热能力。以所提出的采用PVT集热/蒸发器的补气增焓热泵系统为研究对象,计算分析环境条件、太阳辐射强度、... 详细信息

传统直膨式太阳能辅助热泵系统在低温环境适应性欠佳,影响其在寒冷地区使用,通过采用补气增焓技术可以有效提高其低温条件下的供热能力。以所提出的采用PVT集热/蒸发器的补气增焓热泵系统为研究对象,计算分析环境条件、太阳辐射强度、注入蒸汽质量流量对该热泵系统性能的影响。研究结果表明:当环境温度为-10℃,太阳照强度为500 W/m时,性能系数(COP)可达4.3,比使用补气增焓(VI)循环的空气源热泵(ASHP)系统高63.6%。以当量热价(LCOH)作为指标与其他3种供热系统进行比较,所提出的系统经济性也具有一定的优势,可为补气增焓热泵系统在寒冷气候地区的应用提供新思路。

关键词：补气增焓光伏光热直膨式太阳能热泵

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头孢曲松及其杂质对斑马鱼肝脏的毒性

癌变．畸变．突变 2024年第1期36卷 35-41,47页

作者：张锐马媛媛韩莹崇小萌刘馨妍谢广云梁一帆姚尚辰张靖溥中国医学科学院/北京协和医学院医药生物技术研究所北京100050 中国食品药品检定研究院化学药品检定所抗生素室北京102629 中国疾病预防控制中心职业卫生与中毒控制所北京100050

目的:研究头孢曲松及其杂质对斑马鱼肝脏的毒性。方法:选用受精后72 h的野生型斑马鱼和肝脏特异性荧光标记的转基因斑马鱼作为实验动物。分别用不同浓度的(0、1、2、5 mmol/L)头孢曲松和杂质A、B、C、d,以及不同浓度的(0、0.1、0.5、1 m... 详细信息

目的:研究头孢曲松及其杂质对斑马鱼肝脏的毒性。方法:选用受精后72 h的野生型斑马鱼和肝脏特异性荧光标记的转基因斑马鱼作为实验动物。分别用不同浓度的(0、1、2、5 mmol/L)头孢曲松和杂质A、B、C、d,以及不同浓度的(0、0.1、0.5、1 mmol/L)杂质E处理两种幼鱼2 d后,观察幼鱼肝脏形态和肝脏荧光强度;采用整体油红O染色观察野生型斑马鱼肝脏脂肪含量变化;进一步利用转录组测序技术对各受试物处理组斑马鱼进行转录组测序,筛选差异表达基因,并进行信号通路富集分析。结果:活体观察显示,与对照组比较,头孢曲松及其杂质A和C主要使斑马鱼幼鱼肝脏区扩大或荧光强度增强(Pd和E主要使幼鱼肝脏区减小或荧光强度减弱(Pd和E可导致不同程度斑马鱼肝功能发生变化,并造成肝脏组织损伤。

关键词：头孢曲松肝毒性斑马鱼差异表达基因杂质

基于时间序列BP神经网络的煤层气井排采制度优化

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中国矿业大学学报 2015年第1期44卷 64-69页

作者：吴财芳姚帅杜严飞中国矿业大学资源与地球科学学院江苏徐州221008 中国矿业大学煤层气资源与成藏过程教育部重点实验室江苏徐州221008

为了准确预测煤层气井产能,定量分析和优化煤层气井排采制度,利用神经网络具有的非线性映射能力和预测能力,基于时间序列思想构建了结构为14-13-7的BP神经网络煤层气井产能预测模型,在不同排采制度下对潘庄区块CM1井进行了未来7d的产能... 详细信息

为了准确预测煤层气井产能,定量分析和优化煤层气井排采制度,利用神经网络具有的非线性映射能力和预测能力,基于时间序列思想构建了结构为14-13-7的BP神经网络煤层气井产能预测模型,在不同排采制度下对潘庄区块CM1井进行了未来7d的产能预测.结果表明:依据产水量、井底流压调控量度临界值分别为0.2 m3/d,0.1MPa,可以设计24种排采制度调整方案.其中,使产气量大幅减小的排采制度调整方案有5种,小幅减小的有7种,小幅增大的有7种,大幅增大的有5种.可以根据未来生产需要,采取不同的排采制度,对煤层气井产能实现人工实时调控.

关键词：时间序列 BP神经网络排采制度煤层气井优化