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赤小豆残叶DNA鉴定重建命案现场1例

法医学杂志 2024年第2期40卷 216-218页

作者：陈云霞徐杰薛晓明李忠杰戴玉阳南京警察学院刑事科学技术学院江苏南京210023 张家港市公安局刑事科学技术室江苏张家港215600

1案例1.1简要案情某年8月某日,某乡村水渠内发现一具女尸,系他杀。经调查,犯罪嫌疑人吴某夜间在轿车内将女友李某勒颈致死,后翻入路旁梨园内搬水泥柱放于后备箱内,用绳子将水泥柱与李某的尸体捆绑后沉尸水渠。由于吴某系夜间开车且将车... 详细信息

1案例1.1简要案情某年8月某日,某乡村水渠内发现一具女尸,系他杀。经调查,犯罪嫌疑人吴某夜间在轿车内将女友李某勒颈致死,后翻入路旁梨园内搬水泥柱放于后备箱内,用绳子将水泥柱与李某的尸体捆绑后沉尸水渠。由于吴某系夜间开车且将车停在偏僻陌生的地方,对周边地形不熟悉,故无法供述及辨认停车的具体位置。经勘验,在吴某的轿车后备箱内提取到草本植物残叶(图1),但无法从形态学上进行识别,需行DNA检验鉴定该植物残叶种属,进而重建命案现场。

关键词：法医遗传学法医病理学植物物证 DNA鉴定赤小豆现场重建

Environmentally Friendly and Multifunctional Shaddock Peel-Based Carbon Aerogel for Thermal-Insulation and Microwave Absorption

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Nano-Micro Letters 2021年第7期13卷 28-41页

作者： Weihua Gu Jiaqi sheng Qianqian Huang Gehuan Wang Jiabin chen Guangbin Ji College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China Shenyang Aircraft Design Institute Yangzhou Collaborative Innovation Research Institute Co. LtdShenyang 225002People’s Republic of China

Eco-friendly electromagnetic wave absorbing materials with excellent thermal infrared stealth property,heat-insulating ability and compression resistance are highly attractive in practical *** the aforesaid requirements simultaneously is a formidable ***,ultra-light carbon aerogels were fabricated via fresh shaddock peel by facile freeze-drying method and calcination process,forming porous network *** the heating platform temperature of 70℃,the upper surface temperatures of the as-prepared carbon aerogel present a slow upward *** color of the sample surface in thermal infrared images is similar to that of the *** the maximum compressive stress of 2.435 kPa,the carbon aerogels can provide favorable *** shaddock peel-based carbon aerogels possess the minimum reflection loss value(RLmin)of−29.50 dB in X ***,the effective absorption bandwidth covers 5.80 GHz at a relatively thin thickness of only 1.7 *** the detection theta of 0°,the maximum radar cross-sectional(RCS)reduction values of 16.28 dB m^(2) can be *** simulations of RCS have aroused extensive interest owing to their ingenious design and time-saving *** work paves the way for preparing multi-functional microwave absorbers derived from biomass raw materials under the guidance of RCS simulations.

关键词： Microwave absorption Thermal insulation Carbon aerogel Radar cross-sectional simulation Multi-function

Preparation and Characterization of Multi-layer Poly(arylene sulfide sulfone) Nanofibers Membranes for Liquid Filtration

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Chinese Journal of Polymer Science 2019年第12期37卷 1248-1256,I0006页

作者： Zhen-Yan Liu Zhi-Mei Wei Xiao-Jun Wang Gang Zhang sheng-Ru Long jie Yang College of Polymer Science and Engineering Sichuan UniversityChengdu 610065China Analytical&Testing Center Sichuan UniversityChengdu 610064China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China

Owing to the excellent filtration performance and low energy cost,polymeric nanofibers microfiltration(MF)membranes have attracted increasing ***(arylene sulfide sulfone)(PASS),as one of the structurally modified polymers based on poly-(phenylene sulfide)(PPS),has been selected as the raw material to fabricate nanofibers MF membranes via electrospun *** effects of PASS solution and the electrospinning processing parameters on the structural morphology of nanofibers were investigated in *** average diameter of PASS nanofibers was(296±46)nm under the optimal condition:polymer concentration of 0.27 g·m L^–1 PASS/DMI,applied voltage of 20 kV,and speed of collector drum of 300 r·min^–*** then the multi-layer PASS nanofibers MF membranes were fabricated from cold-pressing the optimized PASS nanofibers(as-prepared PASS nanofibers)*** morphology,porosity,pore size,mechanical properties,and surface wettability of the multi-layer PASS nanofibers MF membranes could be tuned by the layers of as-prepared nanofibers *** results demonstrated that the membrane with 6 layers(marked as PASS-6)exhibited the smallest porosity,smallest pore size,highest mechanical property,and best surface ***,the multi-layer PASS nanofibers MF membranes showed that the rejection ratio gradually increased,while the pure water flux decreased with increasing membranes *** PASS-6 membrane exhibited large water flux of 747.76 L·m^–2·h^–1 and high separation efficiency of 99.9%to 0.2μm particles,making it a promising candidate for microfilter.

关键词： Poly(arylene sulfide sulfone) Electrospinning Nanofibers membranes Microfiltration

Research Progress of Angiogenesis in Atherosclerotic Plaque in Chinese Medicine and Western Medicine

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Chinese Journal of Integrative Medicine 2018年第12期24卷 950-955页

作者： MA Lan DAI Jin chen jie CAI Hong-wen LI Jia-ying LI Xin-yao chen Shen-jie MAO Wei The First Affiliated Hospital of Zhejiang Chinese Medical University Hangzhou 310053China

Angiogenesis in atherosclemtic plaque plays a critical role in the mechanism of atherosclerotic physiopathology. Present consensus shows that angiogenesis in atherosclerotic plaque is mainly resulted in hypoxia, inflammation and some pro-angiogenic factors. The homeostasis in plaque, which is hypoxic and infiltrated by inflammatory cells, may lead to angiogenesis, increase the plaque instability and the incidence rate of vascular events. This article reviews the progression of pathogenetic mechanism, physiopathological significance, relevant detecting technique and corresponding therapeutic methods of Chinese and Western medicine of angiogenesis in atherosclerotic plaque, so as to provide more theoretical basis for atherosclerotic clinical treatment.

关键词： angiogenesis atherosclerotic plaque Chinese medicine Western medicine

New model-based method for aero-engine turbine blade tip clearance measurement

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Chinese Journal of Aeronautics 2023年第8期36卷 128-147页

作者： Hanlin sheng Tong LIU Yan ZHAO Qian chen Bingxiong YIN Rui HUANG Jiangsu Province Key Laboratory of Aerospace Power System College of Energy and Power EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016China

Active control of aero-engine turbine tip clearance is one of the best chances for engine performance uplift *** do that,the first requirement is real-time measurement of tip clearance in aero-engine working ***,turbine complexity makes it unlikely for tip clearance sensors to be *** recognition of that,this paper proposed a model-based method for tip clearance ***,by considering previously wrongly neglected factors such as load deformation,a mathematical model to monitor dynamic tip clearance changes is built to improve calculation ***,after clarifying the coupling relationship between engine models and tip clearance models,this paper builds a component-level mathematical model integrating dynamic characteristics of turbine tip clearance,which helps realize accurate measurement of tip clearance in working *** tip clearance affects turbine efficiency is studied afterwards and reported to aero-engine model,so as to mitigate performance difference between aero-engine model and real engines caused by turbine tip ***,by hardware-in-the-loop simulation,tip clearance model demonstrates 15.9%better accuracy than previously built models in terms of turbine centrifugal deformation *** tip clearance measurement model takes averagely 0.34 ms in calculation,meeting the operation requirement,it proves to be an effective new way.

关键词： Aero-engine real-time model Gas turbines Model buildings Tip clearance measurement Turbine components

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基于腔内滤波效应的双波长光纤激光器

应用光学 2024年第5期45卷 1079-1084页

作者：向挽峰陈杰郭雨清王晓宇王娟芬太原理工大学电子信息与光学工程学院山西太原030024

对基于腔内Lyot滤波效应的波长复用锁模光纤激光器进行了实验和仿真研究。在单个光纤激光器中引入全光纤Lyot滤波器,对腔增益谱进行滤波,破坏了脉冲单一波段的传输模式,结合单壁碳纳米管可饱和吸收体,使脉冲分别在2个不同的中心波长下... 详细信息

对基于腔内Lyot滤波效应的波长复用锁模光纤激光器进行了实验和仿真研究。在单个光纤激光器中引入全光纤Lyot滤波器,对腔增益谱进行滤波,破坏了脉冲单一波段的传输模式,结合单壁碳纳米管可饱和吸收体,使脉冲分别在2个不同的中心波长下进行复用传输和锁模。精细调节腔内偏振控制器,当泵浦功率为70.4 mW时,激光器输出了中心波长为1 534.2 nm和1 546.0 nm的双波长脉冲,中心波长间隔为11.8 nm,重复频率均为36.64 MHz,其对应信噪比均约为56.7 dB。此外,还建立了基于非线性薛定谔方程的数值仿真模型,用于数值研究基于Lyot滤波效应的双波长锁模光纤激光器。通过对脉冲光谱演化分析,验证了腔内增益光谱滤波在双波长脉冲的形成和传播中起着重要作用。波长复用光纤激光器中的Lyot滤波效应研究可以进一步拓展实现可调谐双波长生成,可应用于多场景双光梳光谱测量和相干成像。

关键词：光纤激光器双波长被动锁模 Lyot滤波

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铜氨溶液法定量分析蚕丝/羊毛混合物

毛纺科技 2024年第5期52卷 103-107页

作者：肖传志徐杰马国阳余晓筠陈忆霞杨清广东省江门市质量计量监督检测所广东江门529000

为了准确测定蚕丝/羊毛混合物中纤维含量,选用铜氨溶液试剂定量分析蚕丝/羊毛混合物。选择试验温度、振荡频率、振荡时间为试验因素,羊毛含量测试值与实际值的绝对差值为试验指标,首先采用单因素试验法确定各试验因素的较优范围,然后在... 详细信息

为了准确测定蚕丝/羊毛混合物中纤维含量,选用铜氨溶液试剂定量分析蚕丝/羊毛混合物。选择试验温度、振荡频率、振荡时间为试验因素,羊毛含量测试值与实际值的绝对差值为试验指标,首先采用单因素试验法确定各试验因素的较优范围,然后在较优范围内选择各试验因素进行三水平正交试验,通过对试验数据的分析得到最优试验条件,最后使用最优试验条件测试纯羊毛织物,计算得到羊毛的修正系数。结果表明:铜氨溶液法定量分析蚕丝/羊毛混合物的最优试验条件为试验温度40℃、振荡频率150 r/min、振荡时间40 min;羊毛的修正系数(d值)为0.9989,该方法操作简便,结果准确,重复性好。

关键词：蚕丝羊毛混合物定量分析铜氨溶液

多刺激响应型高强度复合材料柔性致动器研究进展

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复合材料科学与工程 2024年第4期 117-128页

作者：盛洁刘航王文乐姜生坤李明霞黄正强耿铁蒋林河南工业大学机电工程学院郑州450001 太原理工大学材料科学与工程学院太原030024 浙江大学中原研究院郑州450001

复合材料柔性致动器兼具灵活性、适应性和结构可设计性等特点,能够响应外界刺激而改变结构、形状和宏观性质,具有广阔的应用前景。本文总结了近几年复合材料柔性致动器在多刺激响应性与力学强度提高方面的研究进展,介绍了该类致动器的... 详细信息

复合材料柔性致动器兼具灵活性、适应性和结构可设计性等特点,能够响应外界刺激而改变结构、形状和宏观性质,具有广阔的应用前景。本文总结了近几年复合材料柔性致动器在多刺激响应性与力学强度提高方面的研究进展,介绍了该类致动器的成型制备方法,分析了致动原理。从填料的维度出发,总结了各类填料在致动器响应速度、机械性能、多刺激响应能力方面的影响,总结了该类致动器在柔性机器人、微型医疗器械、精密传感器、折叠电子器件等方面的现状。最后,对多刺激响应型高强度复合材料致动器的发展前景进行展望,以期为设计制备具有新颖功能和更有挑战性的致动器提供借鉴和参考。

关键词：复合材料柔性致动器多刺激响应增强填料致动原理

Metal-organic framework-derived Co-C catalyst for the selective hydrogenation of cinnamaldehyde to cinnamic alcohol

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Chinese Journal of Chemical Engineering 2023年第10期62卷 46-56页

作者： Fuping Tian Xinchi Zhang Yingying sheng Xiao chen Xiang Wang Changhai Liang State Key Laboratory of Fine Chemicals&Department of Chemistry Dalian University of TechnologyDalian 116024China School of Chemical Engineering Dalian University of TechnologyDalian 116024China

The liquid phase selective hydrogenation of cinnamaldehyde has been investigated over the catalysts Co-C-T(T=400-700℃),which were derived from the carbonization of the MOF precursor Co-BTC at different temperatures in inert ***-C-500 exhibited a higher conversion(85.3%)than those carbonized at other temperatures,with 51.5%selectivity to cinnamyl alcohol,under a mild condition(90℃,4 h,2 MPa H_(2),solvent:9 ml ethanol and 1 ml water).The high catalytic activity of Co-C-500 can be ascribed to the large specific surface area of the catalyst,the uniformly dispersed metallic cobalt nanoparticles,and the more defect sites on the carbon ***,Co-C-500 showed excellent reusability in 5 successive cycles,mainly related to the uniformly dispersed cobalt nanoparticles embedded in carbon support.

关键词： Catalyst Hydrogenation Selectivity Cinnamaldehyde Cinnamyl alcohol Co-C