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Journal of Systems Engineering and Electronics 2000年第2期11卷 73-80页

作者： Li, Guolin wang, baolin shi, Jusheng Naval Aeronautical Engineering Acad Yantai China

This paper presents a multi-component frequency modulation (FM) signal model for short-range radar based on the multi-points scattering model of a target, and proves that the method of computing the instantaneous frequency of single frequency is not suitable to the multi-component signal. The method of TLS-ESPRIT combining the mathematical statistics is presented for obtaining the multi-component signal instantaneous frequency (IF). The computer simulation has shown that the method has the high accuracy for measuring the distance.

关键词： Computer simulation Electromagnetic wave scattering Frequency modulation Mathematical models Statistics

Effective fabrication of porous Au-Ag alloy nanorods for in situ Raman monitoring catalytic oxidation and reduction reactions

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Journal of Materials Science & Technology 2021年第32期91卷 262-269页

作者： Shanlin Ke Caixia Kan Xingzhong Zhu Changshun wang Weijian Gao Zhaosheng Li Xiaoguang Zhu daning shi College of Science Nanjing University of Aeronautics and AstronauticsNanjing 210016China Key Laboratory of Aerospace Information Materials and Physics Ministry of Industry and Information TechnologyNanjing 210016China National Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093China Institute of Solid State Physics Chinese Academy of SciencesHefei 230031China Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education Nanjing 210016China

Porous metal nanostructures exhibit excellent catalytic properties due to their high surface-to-volume ratios and abundant catalytic active sites. However, it is still challenging to control nanopores density and structural features in a facile route and the preparation of porous alloy nanorods for catalytic application has not been well explored. In this work, we demonstrate a synthetic strategy to fabricate highly porous Au–Ag alloy nanorods(P-Au Ag NRs) by critically dealloying Ag atoms from homogeneous solid Au–Ag alloy nanorods(Au Ag NRs). Combining the merits of the tunable plasmonic properties of noble metal nanorods, excellent stabilities of alloys, and superior catalytic activities of porous structures, we use the P-Au Ag NRs as a Raman probe for the in situ monitoring of the catalytic oxidation of 3,3',5,5' tetramethylbenzidine(TMB) and reduction of 4-nitrothiophenol(4-NTP). We also compare their compositiondependent catalytic activities. The results show that P-Au Ag NRs possess superior chemical stability and higher catalytic activity than those of core-shell structures due to synergistic structural and chemical mechanisms. This strategy provides a predictive design approach for the next-generation alloy catalysts with high-performance.

关键词： Catalysis Porous Au-Ag alloy nanorod High-index facets Raman monitoring Oxidation and reduction

Synthesis of high-purity silver nanorods with tunable plasmonic properties and sensor behavior

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Photonics Research 2017年第1期5卷 27-32页

作者： Haiying Xu Caixia Kan Changzong Miao Changshun wang Jingjing Wei Yuan Ni Beibei Lu daning shi College of Science Nanjing University of Aeronautics and Astronautics Department of Mathematics and Physics Nanjing Institute of Technology

Through anisotropic Ag overgrowth on the surface of Au nanobipyramids(Au NBPs), high-purity and sizecontrolled Ag nanorods(Au/Ag NRs) are obtained by a simplified purification process. The diameters of the Au/Ag NRs are determined by the size of the as-prepared Au NBPs, and the lengths of the Au/Ag NRs are tunable using different amounts of Ag precursor in the growth solution. Surface-enhanced Raman scattering(SERS) studies using Rhodamine-6G(R6G) as a test molecule indicate that the Au/Ag NRs have excellent sensing potential. The tunable optical properties and strong electromagnetic effect of the Au/Ag NRs, along with their superior SERS signal enhancement, show that Au/Ag NRs are promising for further applications in plasmon sensing and biomolecular detection.

关键词： NBP Ag Synthesis of high-purity silver nanorods with tunable plasmonic properties and sensor behavior high

Watt Linkage–Based Legged Deployable Landing Mechanism for Reusable Launch Vehicle: Principle, Prototype Design, and Experimental Validation

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Engineering 2023年第1期20卷 120-133页

作者： Haitao Yu baolin Tian Zhen Yan Haibo Gao Hongjian Zhang Huiqiang Wu Yingchao wang Yuhong shi Zongquan Deng State Key Laboratory of Robotics and Systems Harbin Institute of TechnologyHarbin 150080China Beijing Institute of Aerospace Systems Engineering Beijing 100076China

The reusable launch vehicle (RLV) presents a new avenue for reducing cost of space transportation. The landing mechanism, which provides landing support and impact absorption, is a vital component of the RLV at final stage of recovery. This study proposes a novel legged deployable landing mechanism (LDLM) for RLV. The Watt-II six-bar mechanism is adopted to obtain the preferred configuration via the application of the linkage variation approach. To endow the proposed LDLM with advantages of large landing support region, lightweight, and reasonable linkage internal forces, a multi-objective optimization paradigm is developed. Furthermore, the optimal scale parameters for guiding the LDLM prototype design is obtained numerically using the non-dominated sorting genetic algorithm-II (NSGA-II) evolutionary algorithm. A fully-functional scaled RLV prototype is developed by integrating the gravity-governed deploying scheme to facilitate unfolding action to avoid full-range actuation, a dual-backup locking mechanism to enhance reliability of structure stiffening as fully deployed, and a shock absorber (SA) with multistage honeycomb to offer reliable shock absorbing performance. The experimental results demonstrate that the proposed LDLM is capable of providing rapid and smooth deployment (duration less than 1.5 s) with mild posture disturbance to the cabin (yaw and pitch fluctuations less than 6°). In addition, it provides satisfactory impact attenuation (acceleration peak less than 10g (g is the gravitational acceleration)) in the 0.2 m freefall test, which makes the proposed LDLM a potential alternative for developing future RLV archetype.

关键词： Reusable launch vehicle(RLV) Deployable mechanism Optimization desi gn

Laparoscopic abdomino-perineal resection for patients with anorectal malignant melanoma:a report of 4 cases

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The Journal of Biomedical Research 2016年第5期30卷 436-440页

作者： Jun Han Chuanbing shi Xiaogang Dong Jie wang Hao Wen baolin wang Zhenyu He Department of General Surgery the Second Affiliated HospitalNanjing Medical University Department of Pathology the Second Affiliated HospitalNanjing Medical University

Anorectal malignant melanoma is a very rare but lethal disease. Patients with anorectal malignant melanoma commonly complain for changes in bowel habits and rectal bleeding. Therefore, anorectal malignant melanoma is often misdiagnosed as hemorrhoids, polyp or rectal cancer. Surgery is the mainstay of treatment for patients with anorectal malignant melanoma. However, whether abdominoperineal resection or wide local excision is the most appropriate surgical approach is still a controversial issue. Recently, with the great development of laparoscopic techniques, more and more operations can be performed by laparoscopic techniques. However, laparoscopic abdominoperineal resection for management of anorectal malignant melanoma has been rarely reported. In this study, we reported 4 patients with anorectal malignant melanoma underwent laparoscopic abdominoperineal resection. The outcomes of these patients were relatively good during a long time follow-up. Meanwhile, we reviewed the relevant studies with particular focus surgical treatment.

关键词： anorectal malignant melanoma laparoscopic abdominoperineal resection wide local excision

Demonstration of epitaxial growth of strain-relaxed GaN films on graphene/SiC substrates for long wavelength light-emitting diodes

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Light(Science & Applications) 2021年第7期10卷 1267-1274页

作者： Ye Yu Tao wang Xiufang Chen Lidong Zhang Yang wang Yunfei Niu Jiaqi Yu Haotian Ma Xiaomeng Li Fang Liu Gaoqiang Deng Zhifeng shi baolin Zhang Xinqiang wang Yuantao Zhang State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityQianjin Street 2699Changchun 130012China Electron Microscopy Laboratory School of PhysicsPeking UniversityBeijing 100871China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing 100871China Key Laboratory of Materials Physics of Ministry of Education School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052China

Strain modulation is crucial for heteroepitaxy such as GaN on foreign ***,the epitaxy of strain-relaxed GaN films on graphene/SiC substrates by metal-organic chemical vapor deposition is *** was directly prepared on SiC substrates by thermal *** pre-treatment with nitrogen-plasma can introduce C–N dangling bonds,which provides nucleation sites for subsequent epitaxial *** scanning transmission electron microscopy measurements confirm that part of graphene surface was etched by *** study the growth behavior on different areas of graphene surface after pre-treatment,and propose a growth model to explain the epitaxial growth mechanism of GaN films on ***,graphene is found to be effective to reduce the biaxial stress in GaN films and the strain relaxation improves indium-atom incorporation in InGaN/GaN multiple quantum wells(MQWs)active region,which results in the obvious red-shift of light-emitting wavelength of InGaN/GaN *** work opens up a new way for the fabrication of GaN-based long wavelength light-emitting diodes.

关键词： diodes relaxed strain

The potential of carcinoembryonic antigen,p53,Ki-67 and glutathion Stransferase-π as clinico-histopathological markers for colorectal cancer

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The Journal of Biomedical Research 2010年第1期24卷 51-57页

作者： Zhenyu He Chuanbing shi Hao Wen Fanglong Li baolin wang Jie wang Departments of General Surgery and the Second Affiliated Hospital to Nanjing Medical University Nanjing Jiangsu 210011 China. Department of Pathology the Second Affiliated Hospital to Nanjing Medical University Nanjing Jiangsu 210011 China. Interventional Radiology the First Affiliated Hospital Nanjing Medical University Nanjing Jiangsu 210011 China The First Clinic College Nanjing Medical University Nanjing Jiangsu 210029 China

Objective： Colorectal cancer is one of the major contributors to cancer death worldwide. Lack of reliable colorectal cancer markers has hampered the management of these cancer patients. Our main purpose was to study the correlation between histopathological variables of colorectal adenocarcinomas and identify histopathological markers that are of prognostic value in patients with colorectal cancer. Methods： In the present study, we examined the expression of carcinoembryonic antigen （CEA）, p53, Ki-67 and glutathion Stransferase （GST） -n by using immunohistochemical staining methods in 126 colorectal carcinoma patients and evaluated the lymph node metastasis status in these patients by histopathological examination. Results： The positive rates of CEA, p53, Ki-67 and GST-π expression in the colorectal cancer tissue specimens examined were 95.23%, 55.56%, 53.38% and 82.30%, respectively. Expression of p53 and Ki-67 was significantly correlated with the Dukes stages of the tumor, with higher levels of these proteins in Dukes＇ C and D tumors than those in Dukes＇ A and B tumors. Furthermore, the expression of p53, GST-π and Ki-67 correlated with prognosis of patients with colorectal cancer. Additionally, the expression of p53 in colorectal cancer was closely related to the expression of Ki-67 and the expression of GST-π was directly correlated with that of p53. Conclusion： The expression of CEA, p53, Ki-67 and GST-π was correlated with various clinical features of patients with colorectal cancer. The combined use of these histopathological markers appeared to be a promising tool in predicting the prognosis of patients with this type of cancer.

关键词： colorectal cancer carcinoembryonic antigen p53 Ki-67 glutathion stransferase-π lymph nodemetastasis

基于LF-NMR及主成分回归分析的油脂煎炸品质预测

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中国食品学报 2015年第4期15卷 155-163页

作者：王欣夏义苗史然刘宝林上海理工大学食品质量与安全研究所上海200093

以大豆油和玉米油为研究对象,研究薯条煎炸过程(温度(180±5)℃,36 h)中低场核磁(LF-NMR)弛豫特性及理化指标(酸价、黏度、吸光值及总极性化合物含量)的变化规律。应用主成分回归分析建立通过LF-NMR弛豫特性预测理化指标的相关性模型。... 详细信息

以大豆油和玉米油为研究对象,研究薯条煎炸过程(温度(180±5)℃,36 h)中低场核磁(LF-NMR)弛豫特性及理化指标(酸价、黏度、吸光值及总极性化合物含量)的变化规律。应用主成分回归分析建立通过LF-NMR弛豫特性预测理化指标的相关性模型。结果表明:随煎炸时间的延长,油样的LF-NMR弛豫特性中,峰起时间(T21、T22)及单组份弛豫时间(T2w)线性减小,T21特征峰的峰面积比例(S21)线性增大;油样的酸价、总极性化合物(TPC)均随煎炸时间的延长而线性增大,黏度、吸光值则呈二项式增大。与大豆油相比,玉米油的酸价、黏度、吸光值、S21等虽变化幅度较大,但TPC,T21,T22,T2w变化幅度较小。通过主成分回归分析可建立酸价、黏度及总极性化合物含量与LF-NMR弛豫特性间的相关性模型(R2>0.90),模型验证良好,说明可利用油脂煎炸过程中LF-NMR弛豫特性的变化,快速、有效地预测其理化指标的改变程度,从而有效监控煎炸油脂及食品的质量。

关键词：煎炸低场核磁共振理化特性主成分回归分析大豆油玉米油

Upregulation of GLE1 and LCP2 Genes in H5N1 Influenza Virus Infected Patients

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Advances in Infectious Diseases 2016年第3期6卷 138-144页

作者： Wenfeng Peng Yaping shi baolin wang Bo Liu Zhiyuan Peng Jianyong Zhang Ling Chen Hong Zhang Department of Respiratory Medicine Affiliated Hospital of Zunyi Medical College Zunyi China Z-BioMed Inc. Rockville USA

Previous study showed that the Gle1 RNA export mediator-like (Gle1l) gene and the lymphocyte cytosolic protein 2 (Lcp2) gene were upregulated in response to influenza virus A/Puerto Rico/8/1934 (H1N1) in a mouse mode. To determine whether these two genes were upregulated in humans after influenza A virus infection, nasopharyngeal swabs were collected from eleven patients with flu-like symptoms for viral RNA extraction and PCR amplification. Sequencing analysis revealed that nucleoprotein (NP) gene fragments amplified from nasopharyngeal swabs of four patients shared the highest similarity with the NP gene from avian influenza A (H5N1) virus (A/ goose/Shantou/753/2002). Peripheral blood samples were then collected from four patients for quantitative analysis of GLE1 and LCP2 gene expression. Our results demonstrated that both GLE1 and LCP2 genes were upregulated in H5N1 influenza A virus infected patients, suggesting that upregulation of GLE1 and LCP2 genes may be important for the host defense against influenza A viruses.

关键词： Influenza H5N1 GLE1 LCP2 Upregulation Host Defense