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Defence Technology（防务技术） 2022年第6期18卷 1065-1072页

作者： Xing-yu Wu ming-yu li Qing-xuan Zeng Qing-xia yu State Key Laboratory of Explosion and Technology Beijing Institute of TechnologyBeijing100081PR China

Copper azide with high density was successfully synthesized by in-situ reaction of nanoporous copper(NPC)precursor with HN_(3) *** with pore size of about 529 nm has been prepared by electroless plating using polystyrene(PS)as *** copper shells thickness of NPC was controlled by adjusting the PS loading *** effects of copper shell on the morphology,structure and density of copper azide were *** conversion increased from 87.12%to 95.31%when copper shell thickness decrease from 100 to 50 ***,the density of copper azide prepared by 529 nm NPC for 24 h was up to 2.38 g/cm^(3).The hollow structure of this NPC was filled by swelling of copper azide which guaranteed enough filling volume for keeping the same shape as well as improving the charge ***,HNS-IV explosive was successfully initiated by copper azide with minimum charge thickness of 0.55 mm,showing that copper azide prepared has excellent initiation performance,which has more advantages in the application of miniaturized explosive systems.

关键词： Nanoporous copper Electroless plating In-situ reaction Copper azide

MIMO-OFDM channel estimation method utilizing correlation in time domain for B3G-TDD uplink

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The Journal of China Universities of Posts and Telecommunications 2007年第2期14卷 23-27页

作者： ZHOU ming-yu li li-hua JIANG Jun ZHONG ming-hua TAO Xiao-feng Wireless Technologies Innovation Institute Beijing University of Posts and Telecommunications Beijing 100876 China

This article proposes a simple pilot-aided channel estimation method based on correlation in time domain for multiple-input and multiple-output olthogonal frequency division multiplexing （MIMO-OFDM） systems. Pilot symbols in all transmit antennas are generated from different circular shifting of a certain sequence. Through once correlation, the receiver can obtain time-domain pulse responses for channel fading from all transmit antennas to a certain receive antenna, from which channel estimation in frequency domain can be obtained. Beyond 3G time-division duplex （B3G-TDD） uplink is introduced, and the channel estimation method is used in it. Theoretical analysis and simulation are both carried out. Mean square error （MSE） performance shows that the method can exhibit precise estimation. Complexity analysis proves it requires very low complexity. System simulation result shows that it guarantees the performance of B3G-TDD uplink very well.

关键词： multiple-input and multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) channel estimation time-domain pulse response

A mini review on oxidative dehydrogenation of propane over boron nitride catalysts

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Petroleum Science 2023年第4期20卷 2488-2498页

作者： Zhu Fu De-Zheng li li-Dai Zhou yu-ming li Jia-Wen Guo yu-Qiao li Hui-Min liu Qi-Jian Zhang School of Chemical and Environmental Engineering Liaoning University of TechnologyJinzhouLiaoning121001China State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing102249China

Oxidative dehydrogenation of propane is an attractive route for the synthesis of propylene due to its favorable thermodynamic and kinetic characteristics, however, it is challenging to realize high selectivity towards propylene. Recently, it has been discovered that boron nitride (BN) is a promising catalyst that affords superior selectivity towards propylene in oxidative dehydrogenation of propane. Summarizing the progress and unravelling the reaction mechanism of BN in oxidative dehydrogenation of propane are of great significance for the rational design of efficient catalysts in the future. Herein, in this review, the underlying reaction mechanisms of oxidative dehydrogenation of propane over BN are extracted;the developed BN catalysts are classified into pristine BN, functionalized BN, supported BN and others, and the applications of each category of BN catalysts in oxidative dehydrogenation of propane are summarized;the challenges and opportunities on oxidative dehydrogenation of propane over BN are pointed out, aiming to inspire more studies and advance this research field.

关键词： Oxidative dehydrogenation of propane Boron nitride Propylene Reaction mechanism

Self-Assembled Al Nanostructure/ZnO Quantum Dot Heterostructures for High Responsivity and Fast UV Photodetector

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Nano-Micro Letters 2020年第9期12卷 96-108页

作者： Sisi liu ming‑yu li Jianbing Zhang Dong Su Zhen Huang Sundar Kunwar Jihoon Lee School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China School of Science Wuhan University of TechnologyWuhan 430070People’s Republic of China Wuhan National Laboratory for Optoelectronics(WNLO)and School of Engineering Sciences Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China College of Electonics and Information Kwangwoon UniversityNowon-guSeoul 01897Republic of Korea Institute of Nanoscale Science and Engineering University of ArkansasFayettevilleAR 72701USA

light confinement induced by spontaneous near-surface resonance is inherently determined by the location and geometry of metallic nanostructures(NSs),offering a facile and effective approach to break through the limitation of the light-mater interaction within the photoactive ***,we demonstrate high-performance Al NS/ZnO quantum dots(Al/ZnO) heterostructure UV photodetectors with controllable morphologies of the self-assembled Al *** Al/ZnO heterostructures exhibit a superior light utilization than the ZnO/Al heterostructures,and a strong morphological dependence of the Al NSs on the optical properties of the *** inter-diffusion of Al atoms into ZnO matrixes is of a great benefit for the carrier ***,the optimal photocurrent of the Al/ZnO heterostructure photodetectors is significantly increased by 275 times to ~1.065 mA compared to that of the pristine ZnO device,and an outstanding photoresponsivity of 11.98 A W-1 is correspondingly achieved under 6.9 MW cm-2 UV light illumination at 10 V *** addition,a relatively fast response is similarly witnessed with the Al/ZnO devices,paving a path to fabricate the high-performance UV photodetectors for applications.

关键词： Al/ZnO heterostructure photodetectors Plasmonic enhancement ZnO quantum dots Self-assembled Al nanostructures

Clinical Features and Microvascular Complications Risk Factors of Early-onset Type 2 Diabetes Mellitus

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Current Medical Science 2019年第5期39卷 754-758页

作者： Jia-xin HUANG yun-fei liAO yu-ming li Department of Ultrasound Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Department of Endocrinology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China

The aim of this research was to study the clinical features and microvascular complications risk factors of early-onset type 2 diabetes mellitus(T2DM).We analyzed the clinical data from 1421 T2DM inpatients at Wuhan Union *** were divided into early-onset T2DM group(diagnostic age40 years).All subjects underwent a standardized assessment of microvascular *** were compared with independent-samples t test or Chi-square *** logistic regression was used to determine the risk factors of microvascular *** with early-onset T2DM were more inclined to have a lower systolic blood pressure(SBP),a longer duration of diabetes and higher levels of body mass index(BM1),uric acid(UA),fasting plasma glucose(FPG),total cholesterol(TC),triglyceride(TG)and glycosylated hemoglobin(HbAlc)than those with lateonset T2DM(Plinical characteristics of early-onset T2DM were metabolic disorders,including glucose metabolism,lipid metabolism and amino acid ***-onset T2DM was more likely to be associated with *** potential pathogenesis of early and late-onset T2DM might be *** management of metabolic risk factors especially HbA1c,SBP,TG and UA is advised to be performed in the early stage of diabetes.

关键词： early-onset type 2 diabetes mellitus diabetic microvascular complication diabetic nephropathy diabetic retinopathy diabetic peripheral neuropathy

Various Silver Nanostructures on Sapphire Using Plasmon Self-Assembly and Dewetting of Thin Films

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Nano-Micro Letters 2017年第2期9卷 41-57页

作者： Sundar Kunwar Mao Sui Quanzhen Zhang Puran Pandey ming-yu li Jihoon Lee College of Electronics and Information Kwangwoon University Institute of Nanoscale Science and Engineering University of Arkansas

Silver(Ag) nanostructures demonstrate outstanding optical, electrical, magnetic, and catalytic properties and are utilized in photonic, energy, sensors, and biomedical *** target application and the performance can be inherently tuned by control of configuration, shape, and size of Ag nanostructures. In this work, we demonstrate the systematical fabrication of various configurations of Ag nanostructures on sapphire(0001) by controlling the Ag deposition thickness at different annealing environments in a plasma ion coater. In particular, the evolution of Ag particles(between 2 and 20 nm),irregular nanoclusters(between 30 and 60 nm), and nanocluster networks(between 80 and 200 nm) are found be depended on the thickness of Ag thin film. The results were systematically analyzed and explained based on the solid-state dewetting,surface diffusion, Volmer–Weber growth model, coalescence,and surface energy minimization mechanism. The growth behavior of Ag nanostructures is remarkably differentiated at higher annealing temperature(750 ℃) due to the sublimation and temperature-dependent characteristic of dewetting *** addition, Raman and reflectance spectra analyses reveal that optical properties of Ag nanostructures depend on their morphology.

关键词： Ag nanostructures Surface plasmon Selfassembly Dewetting

H_∞ Control for 2-D Discrete State Delayed Systems in the Second FM Model

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自动化学报 2008年第7期34卷 809-813页

作者： XU Jian-ming yu li College of Information Engineering Zhejiang University of Tech-nology Hangzhou 310014 P. R. China

这份报纸涉及 H 控制的问题为二维(2-D ) 分离州的延期系统由第二 Fornasini 和 Marchesini (FM ) 描述了州空间当模特儿。为这个 2-D 系统有 H 噪音变细的一个足够的条件以某个线性矩阵不平等(LMI ) 被给。最佳的 H 控制器被解决一个... 详细信息

这份报纸涉及 H 控制的问题为二维(2-D ) 分离州的延期系统由第二 Fornasini 和 Marchesini (FM ) 描述了州空间当模特儿。为这个 2-D 系统有 H 噪音变细的一个足够的条件以某个线性矩阵不平等(LMI ) 被给。最佳的 H 控制器被解决一个凸的优化问题获得。最后，一个模拟例子被给说明建议结果的有效性。

关键词：二维离散系统控制方法计算方法自动化技术智能系统

Cystic duct dilation through endoscopic retrograde cholangiopancreatography for treatment of gallstones and choledocholithiasis: Six case reports and review of literature

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World Journal of Clinical Cases 2021年第3期9卷 736-747页

作者： Yong-Gang He ming-Fa Gao Jing li Xue-Hui Peng Yi-Chen Tang Xiao-Bing Huang yu-ming li Department of Hepatobiliary The Second Affiliated HospitalArmy Medical UniversityChongqing 400037China Department of Hepatobiliary North-Kuanren General HospitalChongqing 401121China

BACKGROUND Choledocholithiasis removal via endoscopic retrograde cholangiopancreatography(ERCP)then followed by laparoscopic cholecystectomy(LC)has gradually become the principal method in the treatment of gallstones and *** use ERCP through the cystic duct to treat gallstones combined with choledocholithiasis,with the aim to preserve the normal function of the gallbladder while simultaneously decreasing risk of biliary tract *** SUMMARY A total of six cases of patients diagnosed with gallstones and choledocholithiasis were treated with *** efficacy was evaluated via operation success rate,calculus removal rate,postoperative hospital stay and average hospitalization costs;the safety was evaluated through perioperative complication probability,gallbladder function detection and gallstones *** calculus removal rate reached 100%,and patients had mild adverse events,including 1 case of postoperative acute cholecystitis and another of increased blood urinary amylase;both were relieved after corresponding treatment,the remaining cases had no *** average hospital stay and hospitalization costs were 6.16±1.47 d and 5194±696 *** 3-11 mo follow-up revealed that gallbladder contracted well,without recurrence of *** This is the first batch of case reports for the treatment of gallstones and choledocholithiasis through ERCP approached by natural *** results and effects of six reported cases proved that the new strategy is safe and feasible and is worthy of further exploration and application.

关键词： Common bile duct Choledocholithiasis Duct of gallbladder Gallstone Endoscopic retrograde cholangiopancreatography Case report

Structural characterization of steam-heat treated Tectona grandis wood analyzed by FT-IR and 2D-IR correlation spectroscopy

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Chinese Chemical Letters 2015年第2期26卷 221-225页

作者： ming-yu li Shi-Chao Cheng Dan li Shen-Nan Wang An-Min Huang Su-Qin Sun Research Institute of Wood Industry Chinese Academy of Forestry Department of Wood Science and Technology Beijing Forestry University Department of Chemistry Tsinghua University

The properties of wood can be improved through steam-heat *** are many studies about mechanical properties of steam-heat treated wood,but very few studies are on the aspects of chemical *** this study,FT-IR spectra combined with SD-IR spectra,correlation coefficients and 2DIR spectra are employed to analyze the chemical modifications of teak[Tectona grandis L.F.） wood during steam-heat treatment under treatment temperatures from 120 ℃ to 220 ℃ at intervals of 20 ℃.Acetic acid,which is produced during steam-heat treatment,acts as a catalyst of condensation and degradation reactions of wood *** changes of wood components are more and more intense with increasing the treatment *** sensitivity of wood samples to thermal perturbation rises initially with increasing treatment temperature before falling *** steam-heat treated wood under180℃ is the most sensitive.

关键词： Teak wood Steam-heat treatment FT-IR spectroscopy The correlation coefficients 2D-IR spectroscopy

Influence of carbonization temperature on cobalt-based nitrogendoped carbon nanopolyhedra derived from ZIF-67 for nonoxidative propane dehydrogenation

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Petroleum Science 2023年第1期20卷 559-568页

作者： yu-ming li Zi-Ye liu Qi-Yang Zhang Ya-Jun Wang Guo-Qing Cui Zhen Zhao Chun-ming Xu Gui-yuan Jiang State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing102249China

Propylene is a significant basic material for petrochemicals such as polypropylene,propylene oxide,*** abundant propane supply from shale gas,propane dehydrogenation(PDH)becomes extensively attractive as an on-purpose propylene production route in recent ***-doped carbon(NC)nanopolyhedra supported cobalt catalysts were synthesized in one-step of ZIF-67 pyrolysis and investigated further in ***,TEM and N_(2) adsorption-desorption were used to study the influence of carbonization temperature on as-prepared NC supported cobalt *** temperature is found to affect the cobalt phase and nitrogen species of the *** the positive correlation was established between Co0 proportion and space time yield of propylene,indicating that the modulation of carbonization temperature could be important for catalytic performance.

关键词： Propane dehydrogenation ZIF-67 Nitrogen-doped carbon Cobalt