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梯度型聚合物光纤的制备方法及研究进展

现代化工 2004年第10期24卷 15-18页

作者：马素德丁文王朋国钟力生徐传骧西安交通大学电气工程学院陕西西安7100149 西安交通大学电子与信息工程学院陕西西安710049

数字视频信号等的发展对传输介质带宽的要求越来越高,具有较大带宽的梯度型聚合物光纤(GI-POF)成为世界范围内的研究热点。详细介绍了近10年来研究较多的制备GI-POF的3种方法,分析了各种方法的优缺点。界面凝胶共聚法已经比较成熟,现有... 详细信息

数字视频信号等的发展对传输介质带宽的要求越来越高,具有较大带宽的梯度型聚合物光纤(GI-POF)成为世界范围内的研究热点。详细介绍了近10年来研究较多的制备GI-POF的3种方法,分析了各种方法的优缺点。界面凝胶共聚法已经比较成熟,现有缺陷是其本身所固有的,难有大的突破;多层共挤法适合大规模生产,近年来取得了较大进展,工业化生产前景广阔;离心共聚法的应用有限,前景不明朗。对未来GI-POF制备方法的研究进行了展望,认为多层共挤法将成为GI-POF的主流制造方法。

关键词：梯度型聚合物光纤界面凝胶聚合多层共挤离心共聚

Pager Explosion: Cybersecurity Insights and Afterthoughts

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IEEE/CAA Journal of Automatica Sinica 2024年第12期11卷 2359-2362页

作者： chuan sheng Wanlun Ma Qing-Long Han Wei Zhou Xiaogang Zhu sheng Wen Yang xiang Fei-Yue Wang Swinburne University of Technology IEEE the School of Computer and Mathematical Sciences the University of Adelaide Adelaide the State Key Laboratory for Management and Control of Complex Systems Chinese Academy of Sciences the Department of Engineering Science Faculty of Innovation Engineering Macau University of Science and Technology

PAGER EXPLOSION:THE EVENT THE 2024 Lebanon pager explosions represent one of the most unexpected and devastating technological incidents in recent *** September 17 and 18,2024,thousands of pagers and walkie-talkies exploded simultaneously across Lebanon and parts of Syria,resulting in 42 deaths and more than 3500 *** handheld communication devices,previously regarded as secure and low-profile,were rigged with concealed explosives and remotely triggered by attackers.

关键词： Explosions

杂多酸盐TiSiW_(12)O_(40)-Al_4(SiW_(12)O_(40))_3/TiO_2-Al_2O_3催化合成邻苯二甲酸二(2-乙基己基)酯

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沈阳化工学院学报 2003年第4期17卷 245-247页

作者：张静王静王芳王传胜孔祥文沈阳化工学院辽宁沈阳110142

　以固体杂多酸盐催化剂TiSiW12O40 Al4(SiW12O40)3/TiO2 Al2O3催化酯化合成邻苯二甲酸二(2 乙基己基)酯(DOP).结果表明:该催化剂对DOP的合成具有较高的催化活性,合成工艺简单,催化剂容易回收并可多次重复使用等特点.适宜的反应条件为:... 详细信息

　以固体杂多酸盐催化剂TiSiW12O40 Al4(SiW12O40)3/TiO2 Al2O3催化酯化合成邻苯二甲酸二(2 乙基己基)酯(DOP).结果表明:该催化剂对DOP的合成具有较高的催化活性,合成工艺简单,催化剂容易回收并可多次重复使用等特点.适宜的反应条件为:醇酐摩尔比为2.25∶1,催化剂用量为醇酐总质量的1.78%,反应温度为150℃,反应时间2.5h,酯化率95%.

关键词：杂多酸盐酯化苯酐 2-乙基己醇邻苯二甲酸二(2-乙基己基)酯

Study of detonation wave contours in EFP warhead

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Defence Technology（防务技术） 2016年第2期12卷 129-133页

作者： Xu-dong ZU Zheng-xiang HUANG chuan-sheng ZHU Qiang-qiang XIAO School of Mechanical Engineering Nanjing University of Science and Technology

An analytical model for calculating the propagation time of shock wave in a wave shaper is presented in this study. The calculated results show that the contours of three typical detonation waves, such as conical detonation wave, spherical detonation wave, and planar detonation wave, can be formed in the main charge by changing the thickness of wave *** results show that the planar detonation wave do better than the conical detonation and the spherical detonation wave in increasing the length–diameter ratio of explosively-formed projectiles(EFP) and keep the nose of EFP integrated. The detonation wave can increase the length–diameter ratio of EFP when the wave shaper has the suitable thickness.

关键词：爆轰波 EFP 轮廓战斗部爆炸成形弹丸计算结果传播时间圆锥形

INFLUENCE OF GAPS BETWEEN 3-D MULTIPLE FLOATING STRUCTURES ON WAVE FORCES

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Journal of Hydrodynamics 2005年第2期17卷 141-147页

作者： ZHURen-chuan MIAOGuo-ping YOUYun-xiang StateKeyLaboratoryofOceanEngineering SchoolofNavalArchitectureOceanandcivilEngineeringShanghaiJiaotongUniversityShanghai200030China

In the present investigation, influence of gaps between multiple floating structures on wave forces is examined. Strong and complicate hydrodynamic interactions between the floating bodies are observed and the numerical computations have proved the existence of the sharp peak force response on each floating body at some special resonant wave numbers. The resonant wave number is also proved to be around kL=nπ(n=1, 2, …, ∞) with a corresponding frequency shift. A small yet finite gap width will also give influence on the resonant frequency and resonant amplitude of the wave forces, but when the distance between two aligned box-shaped floating bodies becomes big enough, the hydrodynamic interaction can be neglected. The strong hydrodynamic interaction feature has its own important practical significance for the design of module structures and the links (connection) in the whole floating body system. Moreover, the importance is closely related to the hydro-elasticity analyses of a multiple box-shaped floating body system, in which local loads may be as important as the integrated loads.

关键词： resonance wave interaction multiple floating bodies gap influence

The Security of Using Large Language Models:A Survey With Emphasis on ChatGPT

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 1-26页

作者： Wei Zhou Xiaogang Zhu Qing-Long Han Lin Li Xiao Chen sheng Wen Yang xiang the School of Science Computing and Engineering Technologies Swinburne University of Technology IEEE the School of Computer and Mathematical Sciences the University of Adelaide Adelaide the Faculty of Science and Engineering Southern Cross University the School of Information and Physical Sciences the University of Newcastle

ChatGPT is a powerful artificial intelligence(AI)language model that has demonstrated significant improvements in various natural language processing(NLP) tasks. However, like any technology, it presents potential security risks that need to be carefully evaluated and addressed. In this survey, we provide an overview of the current state of research on security of using ChatGPT, with aspects of bias, disinformation, ethics, misuse,attacks and privacy. We review and discuss the literature on these topics and highlight open research questions and future *** this survey, we aim to contribute to the academic discourse on AI security, enriching the understanding of potential risks and mitigations. We anticipate that this survey will be valuable for various stakeholders involved in AI development and usage, including AI researchers, developers, policy makers, and end-users.

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Measurement of Random Surface Parameters of Weak Scatterers using the Speckle Contrast Method

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Chinese Physics Letters 2002年第9期19卷 1283-1286页

作者： Cheng chuan-Fu, Liu Chun-xiang Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Department of Physics Shandong Normal University Ji"nan 00 Shandong Institute of Architecture

Theoretical analysis shows that the deviation roughness w and the lateral correlation length ζ of a weak scattering object determine the different properties of the contrast of the speckles in the image plane of a 4f system. Experimentally, we have measured the data of the speckle contrast versus the radius R of the variable filtering aperture. By fitting the theoretical results to these data, we extract the parameters w and ζ of the random surfaces with Gaussian correlation. This method can determine the two parameters simultaneously and independently, and pre-calibrations are not needed

关键词： Speckle

Embolic Effects of Bletilla striata Microspheres in Renal Artery and Transplanted VX2 Liver Tumor Model in Rabbits

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Chinese Journal of Integrative Medicine 2019年第6期25卷 431-438页

作者： LUO Shi-hua SONG Song-lin ZHENG chuan-sheng LI Wei-yong WANG Yong XIA xiang-wen FENG Gan-sheng Department of Radiology Union Hospital Tongji Medical College Huazh ong University of Science and Tech no logy Wuhan (430022) China Department of Pharmacy Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan (430022) China

Objective: To evaluate the characteristics of Bletilla striata microspheres(BSMs) and its effects as an embolic agent in a rabbit model. Methods: BSMs were prepared with an emulsi?cation-cool condensation-chemical cross-linking method. The characteristics of BSMs in vitro were observed. Embolization experiments were performed in renal artery of rabbit and in a rabbit liver VX2 carcinoma model. Seventy-two New Zealand rabbits were divided into 2 groups, and the right renal artery was embolized with BSMs(200 μm in diameter) in the experimental group and with polyvinyl alcohol(PVA) of the same size in the control group. The pathological findings were examined with hematoxylin-eosin and Masson stainings. Liver and renal functions were tested before and after ***2 tumor was transplanted in 15 New Zealand rabbits, which were randomly divided into 3 groups(n=5). Group A were treated with saline, group B with a mixture of doxorubicin and lipiodol, and group C with hepatic arterial infusion of BSMs(200 μm in diameter). Tumor growth rate was evaluated by magnetic resonance imaging ***-related factors(bax, bcl-2) and tumor vascular endothelial cell growth factor(VEGF) were evaluated through immunohistochemical staining. Results: The characteristics of BSMs in vitro were in full compliance with the requirements for use in interventional procedures. In the renal artery embolization experiment, after BSMs intervention, it was more dif?cult to form collateral circulation than that with PVAs, and the kidney manifested atrophy and calci?cation. There were no signi?cant difference of liver and renal functions in rabbits between groups. In the liver VX2 carcinoma embolization experiment, compared with group A, the growth rate of VX2 liver tumor and Bcl-2 levels was reduced, while apoptosis index, Bax, and VEGF were increased in group B(P0.05). Conclusions: The characteristics of BSMs in vitro a

关键词： Bletilla striata Chinese medicine microsphere characteristic embolization

A Phase Ⅱ Study of Fotemustine Plus Dacarbazine with Dendritic Cell Vaccines as First-Line Therapy for Chinese Patients with Advanced Acral Lentiginous Melanoma

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Chinese Journal of Cancer Research 2009年第1期21卷 13-19页

作者： Lu Si Zhi-hong Chi xiang-qing Yuan chuan-liang Cui Xi-nan sheng Jun Guo Key Laboratory of Carcinogenesis and Translational Research （Ministry of Education） Renal Cancer and Melanoma Center Peking University School of Oncology Beijing Cancer Hospital ＆ Institute Beijing 100142 China

Objective： To investigate fotemustine plus dacarbazine （DTIC） with dendritic cell （DC） vaccines on patients with advanced acral lentiginous melanoma （ALM）. Fotemustine is a cytotoxic alkylating agent with a remarkable antitumor activity as single agent but also in association with （DTIC）. DC is the strongest antigen presenting cell which could induce durable clinical responses. Methods： This was a single-center study. Between July 2003 and June 2006, twenty-eight chemotherapy-naive patients of advanced ALM received fotemustine 100 mg/m^2, dr, 12, DTIC 400 mg/d d2-6, DC vaccines subcutaneously dT, 9, 13 repeated every 28 days. Ten HLA-A02＋24＋ patients received vaccines pulsed with melanoma antigen derived peptides, melanoma antigen recognized by T-cells 1 （Mart-i） and S-100. Eighteen patients received DC loaded with allogeneic melanoma lysate. The primary end-point was progression free survival （PFS）. Secondary end-points were overall survival （OS）, overall response rate （ORR） and toxicity. Tumor assessment was performed every 8 weeks and evaluated according to response evaluation criteria in solid tumors （RECIST）. Results： The 15 men and 13 women had a median age of 51 years. 16 patients had stage Mlc disease and 11/16 had liver metastasis. Patients received an average of 3.82±1.25 cycles. Follow-up for the 18 surviving patients ranged from 7-41 months with a median of 12 months. Median PFS was 8.5 months （95% CI： 7.86-15.21） with 12 patients remaining progression free. Only 10 patients died. Median OS was 12 months （95% CI： 10.33-18.24）. ORR （CR＋PR） was 35.7% including 3 complete response （CR） and 7 partial response （PR）. Six patients had disease stable. A total of 19 Grade Ⅲ/Ⅳ toxicities were observed including thrombocytopenia （n=8）, neutropenia （n=5）, fatigue （n=6） and hypersensitivity reaction （n=1）. One patient died of Grade IV thrombocytopenia. Conclusion： Fotemustine and dacarbazine plus DC vaccines are safe and tolerable to Chinese ALM patients. The regi

关键词： Fotemustine Dacarbazine Dendritic cell Melanoma