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Genes & Diseases 2018年第2期5卷 75-76页

作者： Fei Li Xiaojing Wu Qi Zhou dennis weixi zhu The Editorial Office of Genes&Diseases Chongqing Medical UniversityChongqingChina Cardiovascular Department of Shenzhen University General Hospital ShenzhenChina Cardiovascular Department of the Second Affiliated Hospital Chongqing Medical UniversityChongqingChina Division of Cardiology Regions HospitalUniversity of Minnesota Medical SchoolSt.PaulMinnesotaUSA

At least 10%of the elderly population above the age of 70 carry a condition termed clonal hematopoiesis indeterminate potential(CHIP)due to oligoclonal expansion of mutated hematopoietic stem *** CHIP is known to predispose patients to a higher risk of malignant blood disorders,the recent revelation of its association with higher morbidity and mortality of atherosclerotic cardiovascular disease and ischemic stroke is rather *** independent research groups published studies indicating that Tet2 mutated monocytes from mice modeling CHIP had a causal role in accelerating the growth of atherosclerotic lesions due to their pro-inflammation *** important discovery points to CHIP as a risk factor and raises the prospect of novel treatment to minimize the adverse cardio/cerebro-vascular events.

关键词： Artheroslerosis Cardiovascular CHIP Genetic mutation Hematopoiesis Risk factor Stem cells

Coalescence dynamics of two droplets of different viscosities in T-junction microchannel with a funnel-typed expansion chamber

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Chinese Journal of Chemical Engineering 2021年第10期34卷 43-52页

作者： weixi Guo Chunying zhu Taotao Fu Youguang Ma State Key Laboratory of Chemical Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

The coalescence behavior of two droplets with different viscosities in the funnel-typed expansion chamber in T-junction microchannel was investigated experimentally and compared with droplet coalescence of the same *** types of coalescence regimes were observed:contact non-coalescence,squeeze non-coalescence,two-droplet coalescence and pinch-off *** droplet coalescence of different viscosities,the operating range of non-coalescence becomes narrowed compared to the droplet coalescence of same viscosity,and it shrinks with increasing viscosity ratioηof two droplets,indicating that the difference in the viscosity of two droplets is conducive to coalescence,especially when1<η<***,the influences of viscosity ratio and droplet size on the film drainage time(Tdr)and critical capillary number(Ca)c)were studied *** was found that the film drainage time declined with the increase of average droplet size,which abided by power-law relation with the size difference and viscosity ratio of the two droplets:Tdr~(ld)^(0.25±0.04)and Tdr~(η)^(﹣0.1±0.02).For droplet coalescence of same viscosity,the relation of critical capillary number with two-phase viscosity ratio and dimensionless droplet size is Cac=0.48λ^(0.26)l^(﹣2.64),while for droplet coalescence of different viscosities,the scaling of critical capillary number with dimensionless average droplet size,dimensionless droplet size difference and viscosity ratio of two droplets is Cac=0.11η^(﹣0.07)ls^(﹣2.23)l^(0.16)_(d).

关键词： Microchannel Droplet Coalescence Viscosity ratio Critical capillary number

Waterlogging tolerance and wood properties of transgenic Populus alba×glandulosa expressing Vitreoscilla hemoglobin gene(Vgb)

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Journal of Forestry Research 2021年第2期32卷 831-839页

作者： Yiliang Li weixi Zhang Wenxu zhu Bingyu Zhang Qinjun Huang Xiaohua Su State Key Laboratory of Tree Genetics and Breeding Research Institute of ForestryChinese Academy of ForestryBeijing 100091People’s Republic of China Key Laboratory of Tree Breeding and Cultivation National Forestry and Grassland AdministrationBeijing 100091People’s Republic of China Guangdong Provincial Key Laboratory of Silviculture Protection and UtilizationGuangzhou 510520People’s Republic of China Guangdong Academy of Forestry Guangzhou 510520People’s Republic of China College of Forestry Shenyang Agricultural University120 Dongling StreetShengyang 110866People’s Republic of China

Because overexpression of Vitreoscilla hemoglobin gene(Vgb)gene in plants can enhance tolerance to waterlogging,here Vgb was inserted into Populus alba×glandulosa to investigate its expression and effects on growth and physiological responses to waterlogging stress in the transgenic *** blotting and RT-PCR analysis of Vgb-transgenic ***×glandulosa showed that the Vgb gene was integrated into the genome of the V13-81 and V13-85 transgenic lines and *** greenhouse waterlogging stress tests,mortality of the transgenic poplar was significant lower than that of nontransgenic plants with increasing treatment time from 2 to 22 *** transgenic plants had higher chlorophyll content and less chloroplast damage than in the control ***,starch accumulation increased,and growth was enhanced in the transgenic plants,suggesting that the Vgb-expressing lines had improved energy *** trials of the transgenic poplar suggested that Vgb expression promotes growth and influences wood *** together,our results suggest that the expression of Vgb can increase the accumulation of chlorophyll and starch in the transgenic poplar,improve its ability to endure flooding,and improve growth and wood quality of the transgenic plants.

关键词： Populus alba×glandulosa vgb gene Waterlogging stress Growth Microscopy

Assessing bacterial communities in the rhizosphere of 8-year-old genetically modified poplar(Populus spp.)

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Journal of Forestry Research 2016年第4期27卷 939-947页

作者： Wenxu zhu Yanguang Chu Changjun Ding Qinjun Huang Bingyu Zhang weixi Zhang Xiaohua Su State Key Laboratory of Tree Genetics and Breeding Research Institute of Forestry Chinese Academy of ForestryBeijing 100091 China Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration Beijing 100091 China

Microbe communities in rhizosphere ecosystems are important for plant health but there is limited knowledge of them in the rhizospheres of genetically modified（GM） plants, especial for tree species. We used the amplitude sequencing method to analyze the V4 regions of the 16 S r RNA gene to identify changes in bacterial diversity and community structure in two GM lines（D520 and D521）, one non-genetically modified（nonGM） line and in uncultivated soil. After chimera filtering,468.133 sequences in the domain Bacteria remained. There were ten dominant taxonomic groups（with [1 % of all sequences） across the samples. 241 of 551 genera（representing a ratio of 97.33 %） were common to all samples.A Venn diagram showed that 1.926 operational taxonomic units（OTUs） were shared by all samples. We found a specific change, a reduction in Chloroflexi, in the microorganisms in the rhizosphere soil planted with poplars. Taken together, the results showed few statistical differences in the bacterial diversity and community structure between the GM line and non-GM line, this suggests that there was no or very limited impact of this genetic modification on the bacterial communities in the rhizosphere.

关键词： rhizosphere communities Bacteria sequencing poplar planted taxonomic representing genera microbial

DISTRIBUTION AND EFFECT OF Ce IN RE BEARING DUCTILE IRON

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Acta Metallurgica Sinica(English Letters) 1992年第6期5卷 419-424页

作者： zhu Ruihui WANG Yu HAN Qiyong SONG weixi University of Science and Technology Beijing,Beijing,China Engineer,Institute of Precise and Special New Materials,University of Science and Technology Beijing,Beijing 100083,China Beijing Univ of Science and Technology Beijing China

The dependence of nodularization of graphite upon Ce content in RE bearing nodular cast iron,prepared by directional solidification,has been investigated by electrolytic extraction-radioisotope assay analysis of Ce in each phase of the iron together with measurement of nodulized *** show that the Ce occurs mainly as alloyed form. In the graphite phase,the Ce content is believed to be characterization of *** graphite would completely nodulized only the Ce is over a certain content in graphite phase.

关键词： RE nodular cast iron directional solidification graphite Ce

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多匹配基元集成的多视影像密集匹配方法

测绘学报 2013年第5期42卷 691-698页

作者：王竞雪朱庆王伟玺辽宁工程技术大学测绘与地理科学学院辽宁阜新123000 西南交通大学地球科学与环境工程学院四川成都610031 深圳市国土资源创新研究中心广东深圳518034

针对多视影像密集匹配中的遮挡问题,提出一种像方特征点和物方平面元集成的多视影像密集匹配方法。该方法利用规则格网划分的空间平面作为基础,对两种不同形式的匹配基元进行集成。首先通过多视影像上特征点投影范围和平面元位置相互制... 详细信息

针对多视影像密集匹配中的遮挡问题,提出一种像方特征点和物方平面元集成的多视影像密集匹配方法。该方法利用规则格网划分的空间平面作为基础,对两种不同形式的匹配基元进行集成。首先通过多视影像上特征点投影范围和平面元位置相互制约,实现特征点和平面元的同时匹配,为后续匹配提供初始可靠的DSM。然后在此基础上,结合铅垂线轨迹法和基于高度的遮挡检测方法对平面上规则分布的平面元进行匹配,加密初始匹配结果。最后通过对某地区4张UCX数字航空影像的匹配试验,验证本文方法的有效性。

关键词：多视影像匹配像方特征点物方平面元遮挡检测铅垂线轨迹法

顾及拓扑关系的立体影像直线特征可靠匹配算法

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测绘学报 2017年第11期46卷 1850-1858页

作者：王竞雪朱庆王伟玺西南交通大学地球科学与环境工程学院四川成都611756 辽宁工程技术大学测绘与地理科学学院辽宁阜新123000 深圳大学智慧城市研究院广东深圳518060

针对单直线匹配过程中缺乏考虑邻近直线特征之间关系,纹理断裂处单一直线描述符的弱可靠性,提出了一种顾及拓扑关系的立体影像直线特征可靠匹配算法。该算法首先根据直线间距离、角度等基本拓扑关系对参考影像、搜索影像上提取的直线进... 详细信息

针对单直线匹配过程中缺乏考虑邻近直线特征之间关系,纹理断裂处单一直线描述符的弱可靠性,提出了一种顾及拓扑关系的立体影像直线特征可靠匹配算法。该算法首先根据直线间距离、角度等基本拓扑关系对参考影像、搜索影像上提取的直线进行编组;然后将编组得到的直线组作为匹配基元,充分利用直线特征组内的拓扑关系,依次采用核线约束、单应矩阵约束、象限约束、不规则三角形区域灰度相关约束对其进行匹配;最后将同名直线组分裂为两对同名单直线、并对分裂后的结果进行整合、拟合、检核等后处理,得到"一对一"的同名直线。选取典型纹理特征的航空影像和近景影像进行参数分析及直线匹配试验,结果表明,本文算法能获取可靠的直线匹配结果。

关键词：直线匹配直线组匹配拓扑关系核线约束单应矩阵

基于改进多粒度级联森林的测井岩性识别方法研究与应用

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地球物理学进展 2021年第2期36卷 654-661页

作者：苏赋朱威西马磊西南石油大学成都610500

岩性是储层评价和地层开发潜力评测的关键因素,是油藏描述、实时钻井监控及求取储层参数的基础.测井资料中包含丰富的地层岩性信息,是岩性分析的基础资料.然而,数据信息的精度往往会严重的影响到识别的准确率,同时复杂的岩性状况也加大... 详细信息

岩性是储层评价和地层开发潜力评测的关键因素,是油藏描述、实时钻井监控及求取储层参数的基础.测井资料中包含丰富的地层岩性信息,是岩性分析的基础资料.然而,数据信息的精度往往会严重的影响到识别的准确率,同时复杂的岩性状况也加大了测井解释的难度,如何快速、精确、低耗地利用测井资料获取地层岩性信息越来越受到研究人员的重视.针对传统深度神经网络复杂的网络模型和学习性能严重依赖对超参数调节的问题,本文在机器学习的基础上引入余弦相似度对多粒度级联森林方法进行改进,提出改进多粒度级联森林模型(Improve Multi-Grained Cascade Forest,IgcForest),有效地提高了岩性识别的效率和精度.在大庆油田实际测井数据上使用IgcForest方法,综合自然伽马(GR)、声波时差(AC)、密度(DEN)、微梯度电阻率(RMN)、深侧向电阻率(PHIND)和浅侧向电阻率(RLLS)六种测井参数,对页岩、粉砂岩和砂岩进行识别,取得了较好的识别效果.通过实验数据对比,使用IgcForest模型的岩性识别准确率高于支持向量机、深度神经网络、决策树和多粒度级联森林(Multi-Grained Cascade Forest,gcForest)等其他模型10%左右,算法整体准确率高达87%,表明其在岩性识别算法中更具有发展前景.

关键词：岩性识别测井数据机器学习 IgcForest

A Retrospective Investigation of a Case of Dual Infection by Avian-Origin Influenza A(H10N5)and Seasonal Influenza A(H3N2)Viruses-Anhui Province,China,December 2023-January 2024

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China CDC weekly 2024年第25期6卷 605-613页

作者： Jun He Lei Gong Xiaolong Chen Deman Cheng Sai Hou Mengyao Kong Xun Wei Junling Yu Qian zhu Weiwei Li Wanhang Lu Yujie Feng Hongya Gui weixi Fang Peng Wang Yidan Xia Yong Sun Wanrong Luo Yun Yang Guowei Shen Hui Wang Jiabing Wu Anhui Provincial Center for Disease Control and Prevention Hefei CityAnhui ProvinceChina School of Public Health Bengbu Medical UniversityBengbu CityAnhui ProvinceChina Public Health Research Institute of Anhui Province Hefei CityAnhui ProvinceChina School of Public Health Anhui Medical UniversityHefei CityAnhui ProvinceChina Xuancheng City Center for Disease Control and Prevention Xuancheng CityAnhui ProvinceChina Guangde City Center for Disease Control and Prevention Guangde CityAnhui ProvinceChina

Summary What is known about this topic?H10 avian influenza viruses circulate in wild birds and can reassort with other subtypes.H10N8 and H10N3 have previously caused sporadic human infections in *** is added by this report?This report documents the first human case of coinfection with avian-origin H10N5 and seasonal H3N2 influenza *** investigations identified H10N5 in environmental samples linked to the patient,but no transmission to close contacts *** are the implications for public health practice?Enhanced surveillance of avian influenza in live poultry markets and poultry populations is crucial for thoroughly characterizing the epidemiology,transmission,and pathogenesis of H10N5 *** assessments of outbreak control measures is essential to guide effective management.

关键词： poultry Anhui thoroughly

Cytochalasan alkaloids from Chaetomium globosum TW1-1 by using an OSMAC strategy

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Cytochalasan alkaloids from Chaetomium globosum TW1-1 by usi...