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声像图质量对人工智能辅助诊断系统与人工测量发育性髋关节发育不良患儿生物学指标一致性的影响

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中国医学影像技术 2024年第7期40卷 1067-1071页

作者：张双双陈笑一石伟王紫艺韩童杨鑫倪东黄兵旋吴志霞许娜中国医科大学附属深圳市儿童医院超声科广东深圳518000 中国医科大学附属深圳市儿童医院骨科广东深圳518000 汕头大学医学院附属深圳市儿童医院超声科广东深圳518000 深圳大学医学部生物医学工程学院广东深圳518000

目的观察声像图质量对人工智能(AI)辅助诊断系统与人工测量发育性髋关节发育不良(DDH)生物学指标一致性的影响。方法回顾性分析75例DDH及345例非DDH患儿髋关节超声资料,对声像图进行主观评分。于每例选取1幅图像,以熵权法基于140幅(A组... 详细信息

目的观察声像图质量对人工智能(AI)辅助诊断系统与人工测量发育性髋关节发育不良(DDH)生物学指标一致性的影响。方法回顾性分析75例DDH及345例非DDH患儿髋关节超声资料,对声像图进行主观评分。于每例选取1幅图像,以熵权法基于140幅(A组,取自25例DDH及115例非DDH)构建评估声像图质量模型,获得DDH相关解剖结构及影响因素的权重,据以将另外280幅(B组,取自50例DDH及230例非DDH)图像质量由高至低分为A、B、C级;分析AI与人工测量B组DDH生物学指标的一致性。结果DDH相关解剖结构及影响因素权重按照髂骨支下缘、髂骨、盂唇、骨缘转折点、股骨头、运动伪影依序下降。B组A级67幅(取自9例DDH及58例非DDH)、B级160幅(取自26例DDH及134例非DDH)、C级53幅(取自15例DDH及38例非DDH);除DDH患儿声像图中的β、股骨头覆盖率(FHC)及股骨头长径外,AI与人工测量DDH其他指标的一致性由高到低均为A级>B级>C级;二者针对DDH患儿声像图的测量结果的一致性高于非DDH。结论髋关节声像图质量影响AI与人工测量DDH生物学指标的一致性;遇声像图质量欠佳时,应重点测量FHC及股骨头径线。

关键词：发育性髋关节发育不良超声检查人工智能图像质量

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A high‐performance transition‐metal phosphide electrocatalyst for converting solar energy into hydrogen at 19.6% STH efficiency

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Carbon Energy 2023年第1期5卷 206-217页

作者： Hua Zhang Abuduwayiti Aierke Yingtang Zhou Zitao ni Ligang Feng Anran Chen Thomas Wågberg Guangzhi Hu Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental SciencesSchool of Materials and EnergyYunnan UniversityKunmingPeople's Republic of China School of Energy and Environment Science Yunnan Normal UniversityKunmingPeople's Republic of China National Engineering Research Center for Marine Aquaculture Marine Science and Technology CollegeZhejiang Ocean UniversityZhoushanPeople's Republic of China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhouPeople's Republic of China Department of Physics UmeåUniversityUmeåSweden

The construction of high-efficiency and low-cost non-noble metal bifunctional electrocatalysts for water electrolysis is crucial for commercial large-scale application of hydrogen ***,we report a novel strategy with erbiumdoped niCoP nanowire arrays in situ grown on conductive ni.kel foam(Er-niCoP/NF).Significantly,the developed electrode shows exceptional bifunctional catalytic activity,which only requires overpotentials of 46 and 225 mV to afford a current density of 10 mAcm^(−2) for the hydrogen evolution reaction(HER)and the oxygen evolution reaction(OER),*** functional theory calculations reveal that the appropriate Er incorporation into the niCoP lattice can significantly modulate the electronic structure with the d-band centers of ni and Co atoms by shifting to lower energies with respect to the Fermi level,and optimize the Gibbs free energies of HER/OER intermediates,thereby accelerating water-splitting *** assembled as a solar-driven overall water-splitting electrolyzer,the as-prepared electrode shows a high and stable solar-to-hydrogen efficiency of 19.6%,indicating its potential for practical storage of intermittent energy.

关键词： bifunctional electrocatalysts electronic regulation hydrogen evolution reaction oxygen evolution reaction solar-to-hydrogen efficiency

非溶剂组分对有机载膜及防离子反馈MCP性能的影响

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应用光学 2024年第4期45卷 828-833页

作者：杨凯莉张妮孙超朱宇峰郝子恒郭欣李朋博微光夜视技术重点实验室陕西西安710065 昆明物理研究所云南昆明650223

有机载膜作为制备Al_(2)O_(3)防离子反馈膜的临时衬底,其膜层致密性及厚度显著影响Al_(2)O_(3)膜的致密性、电子透过性和防离子反馈微通道板(microchannel plate,MCP)的电特性。将非溶剂组分由超纯水改为NaCl溶液,通过金相显微镜及台阶... 详细信息

有机载膜作为制备Al_(2)O_(3)防离子反馈膜的临时衬底,其膜层致密性及厚度显著影响Al_(2)O_(3)膜的致密性、电子透过性和防离子反馈微通道板(microchannel plate,MCP)的电特性。将非溶剂组分由超纯水改为NaCl溶液,通过金相显微镜及台阶仪分析不同NaCl溶液质量浓度所制有机载膜的膜层致密性及厚度;并测量相应有机载膜应用所制Al_(2)O_(3)膜的致密性、电子透过性及防离子反馈MCP的电特性。研究发现,NaCl溶液的质量浓度为0.05 g·ml^(-1)时,有机载膜具备高致密性;且制备的Al_(2)O_(3)防离子反馈膜致密,MCP的增益损失量较小,是最佳的非溶剂组分质量浓度。

关键词：防离子反馈微通道板有机载膜非溶剂组分电子透过特性电特性

气承式膜结构煤棚调整内压下的实测位移响应分析

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建筑结构 2024年第5期54卷 98-103页

作者：冯成凯倪仲俊杨凯李雄彦王玉鑫王永刚浙江浙能乐清发电有限责任公司温州325609 北京工业大学城市建设学部北京100124

随着气承式膜结构煤棚跨度和单体面积的增加,内压分布特征的变化复杂。目前缺乏针对大型项目的内压升降与位移响应变化关系的实测验证,以确定结构位移响应理论计算值与实测数据是否吻合。基于布设在浙江乐清电厂115m×317m的气承式膜结... 详细信息

随着气承式膜结构煤棚跨度和单体面积的增加,内压分布特征的变化复杂。目前缺乏针对大型项目的内压升降与位移响应变化关系的实测验证,以确定结构位移响应理论计算值与实测数据是否吻合。基于布设在浙江乐清电厂115m×317m的气承式膜结构煤棚的健康监测系统,在台风来临前对结构进行了升降压-保压测试。实测了结构7个不同测点的位移响应,分析了调整内压时结构的位移响应特征。同时,将实测结果与数值模拟结果进行对比分析,验证了对于大跨度气承式膜结构基于压力等效分析方法的可靠性。

关键词：气承式膜结构调整内压位移响应健康监测

Impacts of algal blooms removal by chitosan-modified soils on zooplankton community in Taihu Lake,China

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Journal of Environmental Sciences 2010年第10期22卷 1500-1507页

作者： Jiajia ni Yuhe Yu Weisong Feng Qingyun Yan Gang Pan Bo Yang Xiang Zhang Xuemei Li key Laboratory of Biodiversity and Conservation of Aquatic Organisms Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China. Graduate School of the Chinese Academy of Sciences Beijing 100039 China State key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-environmental Sciences Chinese Academy of Sciences Beijing 100085 China

It is important to assess the effect on zooplankton when perform the environmental protection or restoration technology, especially removing algal blooms, because algae were the major primary producer in algal lakes. The influence on zooplankton community after half a year of algal blooms removed by chitosan-modified soils in Taihu Lake was assessed and the rationality of carrying out the process semiannually was evaluated in the present study. Morphological composition and genetic diversity of zooplankton community were investigated by microscope checkup and polymerase chain reaction-denatured gradient gel electrophoresis （PCR-DGGE）. A total of 44 zooplankton taxa （23 protozoa, 17 rotifers, 3 copepoda and 1 cladocera） were detected by microscope checkup, and a total of 91 bands （28 bands amplified by primers F1427-GC and R1616, 63 bands amplified by primers Fung-GC and NS1） were detected by PCR-DGGE. The results of cluster analysis or detrended correspondence analysis indicated that there was no considerable difference in morphological composition of zooplankton and DGGE profiles between experimental and control sites, and DGGE profiles could represent the biologic diversity. The study showed that zooplankton community could recover original condition after half year of algal blooms removed by chitosan-modified soils and it was acceptable to apply this process semiannually. In addition, the results revealed that PCR-DCJGE could be applied to investigate the impacts of the environmental protection or restoration engineering on zooplankton community diversity.

关键词： algal blooms Microcystis aeruginosa zooplankton community chitosan-modified soils Taihu Lake

大红浙醋酒精发酵阶段非酿酒酵母产香机制研究

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中国酿造 2024年第4期43卷 85-90页

作者：倪嘉迎朱玲王凤军修雨张越姚云平赵国忠天津科技大学食品科学与工程学院天津300457 安琪酵母股份有限公司江西宜昌443000

为了探讨非酿酒酵母在大红浙醋酒精发酵阶段的产香机制,以商业酿酒酵母(Saccharomyces cerevisiae)(Sc)、酒曲(JQ)、酿酒酵母SHQ630单独发酵为对照组,非酿酒酵母(弗比恩毕赤酵母(Pf)、耐热克鲁维酵母(kt)、库德里阿兹威毕赤酵母(Pk)、... 详细信息

为了探讨非酿酒酵母在大红浙醋酒精发酵阶段的产香机制,以商业酿酒酵母(Saccharomyces cerevisiae)(Sc)、酒曲(JQ)、酿酒酵母SHQ630单独发酵为对照组,非酿酒酵母(弗比恩毕赤酵母(Pf)、耐热克鲁维酵母(kt)、库德里阿兹威毕赤酵母(Pk)、扣囊复膜酵母(Sf))单独发酵为实验组,采用3,5-二硝基水杨酸(DNS)法测定其还原糖代谢能力,失重法测定CO_(2)生成能力,顶空固相微萃取(HS-SPME)结合气相色谱质谱联用(GC-MS)技术测定其挥发性风味成分,并对菌株的耐受性进行分析。结果表明,在酒精发酵过程中,菌株SHQ630产乙醇能力最强,菌株Pf、kt及Pk的产乙醇能力与菌株Sc和酒曲(JQ)相当,菌株Sf产乙醇能力最弱。耐受性试验结果表明,菌株Sf和Pk耐酸性较好,菌株Pf和kt乙醇耐受性较好。GC-MS结果表明,菌株Sf、Pk、Pf及kt发酵液分别共检出挥发性风味成分24种、18种、13种、10种,菌株Pk产酯种类最多(10种)、产醇最高(12.43 mg/L),菌株Pf产酯最高(10.64 mg/L)。结果显示,非酿酒酵母能够提升大红浙醋酒精发酵阶段风味的丰富性和芳香性。

关键词：大红浙醋非酿酒酵母产香机制耐乙醇风味

Fascin promotes the motility and invasiveness of pancreatic cancer cells

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World Journal of Gastroenterology 2011年第40期17卷 4470-4478页

作者： Yan-Feng Xu Shuang-ni Yu Zhao-Hui Lu Jian-Ping Liu Jie Chen Department of Pathology Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Tsinghua University Beijing 100730 China

AIM:To explore the role of actin-bundling protein, fascin during the progression of pancreatic cancer. METHODS:The plasmid expressing human fascin-1 was stably transfected into the pancreatic cancer cell line MIA PaCa-2. The proliferation, cell cycle, motility, scattering, invasiveness and organization of the actin filament system in fascin-transfected MIA PaCa-2 cells and control non-transfected cells were determined. RESULTS:Heterogeneous overexpression of fascin markedly enhanced the motility, scattering, and inva-siveness of MIA PaCa-2 cells. However, overexpression of fascin had minimal effect on MIA PaCa-2 cell pro-liferation and cell cycle. In addition, cell morphology and organization of the actin filament system were distinctly altered in fascin overexpressed cells. When transplanted into BALB/c-nu mice, fascin-transfected pancreatic cancer cells developed solid tumors at a slightly slower rate, but these tumors displayed more aggressive behavior in comparison with control tumors. CONCLUSION: Fascin promotes pancreatic cancer cell migration, invasion and scattering, thus contributes to the aggressive behavior of pancreatic cancer cells.

关键词： Fascin Invasiveness Motility Pancreaticcancer

Synthesis, Crystal Structure, and Photoluminescent Property of a 2-Fold Interpenetrating Znic(Ⅱ) Coordination Polymer with 2,5-Dicarboxylic Acid-3,4-ethylene Dioxythiophene

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Chinese Journal of Structural Chemistry 2020年第9期39卷 1729-1734,1558页

作者： LI Zhao-Hao ZHOU Yu-Xuan ni Yuan-Yuan College of Chemistry and Chemical Engineering and Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934China

A three-dimensional coordination polymer,[Zn2(L)2(bpp)(H2O)2]n(H2L=2,5-dicarboxylic acid-3,4-ethylene dioxythiophene,bpp=1,3-di(4-pyridyl)propane),was synthesized with high yield under solvothermal reaction conditions and structurally characterized by elemental analysis,infrared spectra,thermogravimetric analysis,powder X-ray diffraction and single-crystal X-ray diffraction *** crystallizes in orthorhombic space group Pnma with a=16.6542(9),b=18.0868(10),c=10.7528(5)?,V=3239.0(3)?3,Z=4,Dc=1.684 g/cm3,Mr=821.38,Dc=1.684 g/cm3,μ=1.683 mm-1,F(000)=1672,R=0.0466,wR=0.0933 and S=*** compound exhibits a three-dimensional structure,which can be simplified into a 2-fold interpenetrated pcu topological ***,it displays luminescence emission in the solid state at room temperature.

关键词： coordination polymer 2,5-dicarboxylic acid-3,4-ethylene dioxythiophene 1,3-bis(4-pyridyl)propane crystal structure photoluminescent property

In Situ Formation of LiF-Rich Carbon Interphase on Silicon Particles for Cycle-Stable Battery Anodes

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Transactions of Tianjin University 2023年第2期29卷 101-109页

作者： Yang ni Shuibin Tu Renmin Zhan Zhao Cai Xiaohong Wang Yongming Sun Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China China-EU Institute for Clean and Renewable Energy Huazhong University of Science and TechnologyWuhan 430074China State key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Faculty of Materials Science and Chemistry China University of Geosciences(Wuhan)Wuhan 430074China

Silicon(Si)is a potential high-capacity anode material for the next-generation lithium-ion battery with high energy ***,Si anodes suff er from severe interfacial chemistry issues,such as side reactions at the electrode/electrolyte interface,leading to poor electrochemical cycling ***,we demonstrate the fabrication of a conformal fl uorine-containing carbon(FC)layer on Si particles(Si-FC)and its in situ electrochemical conversion into a LiF-rich carbon layer above 1.5 V(***^(+)/Li).The as-formed LiF-rich carbon layer not only isolates the active Si and electrolytes,leading to the suppression of side reactions,but also induces the formation of a robust solid-electrolyte interface(SEI),leading to the stable interfacial chemistry of as-designed Si-FC *** Si-FC electrode has a high initial Coulombic effi ciency(CE)of 84.8%and a high reversible capacity of 1450 mAh/g at 0.4 C(1000 mA/g)for 300 *** addition,a hybrid electrode consisting of 85 wt%graphite and 15 wt%Si-FC,and mass 2.3 mg/cm^(2) loading delivers a high areal capacity of 2.0 mAh/cm^(2) and a high-capacity retention of 93.2%after 100 cycles,showing the prospects for practical use.

关键词： Lithium-ion batteries Silicon anode LiF-rich carbon interphase Capacity Cycling stability