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Magnetic resonance imaging-guided percutaneous cryoablation of hepatocellular carcinoma in special regions

Hepatobiliary & Pancreatic Diseases International 2010年第4期9卷 384-392页

作者： Wu, Bin xiao, Yue-Yong Zhang, xiao Zhang, Ai-Lian Li, hong-Jun Gao, deng-Fa Chinese Peoples Liberat Army Gen Hosp Dept Radiol Beijing 100853 Peoples R China

BACKGROUND: Local cryoablation guided by CT or ultrasound has been widely applied in the treatment of hepatocellular carcinoma. However, it is still difficult to apply this technique in certain regions such as the diaphragm dome, the first hepatic hilum, and regions adjacent to the gallbladder. This study aimed to evaluate the safety and efficacy of using magnetic resonance imaging (MRI)-guided percutaneous cryoablation as well as the effect of using an open MRI system in guiding and monitoring the treatment of hepatocellular carcinoma in these regions. METHODS: Cryoablation, guided by an open 0.35T MRI scanner and with the assistance of an MRI-compatible optical navigation system, was performed on 32 patients with hepatocellular carcinoma at the diaphragm dome, the first hepatic hilum, and regions adjacent to the gallbladder. Each patient had one or two tumors. The total number of tumors treated was 36. The tumor diameters ranged from 2.5 to 10.0 cm (mean 4.7+/-1.8 cm). The cryosurgical system was MRI-compatible and equipped with cryoprobes 1.47 mm in outside diameter. Under the guidance of MRI in combination with the optical navigation system, the cryoprobes were introduced percutaneously into a tumor at the planned targeting points while critical organs or tissues were avoided. Each cryoablation procedure included two freezing-thawing cycles, and MRI images were acquired dynamically to monitor the ablation of the tumor from time to time during the operation. In order to investigate the therapeutic effects of a cryoablation procedure, AFP measurements and liver-enhanced MRI or CT-enhanced scans were performed at regular times. RESULTS: MRI and optical navigation system-guided cryoablation procedures were successfully performed on all 32 patients (36 tumor sites) and no serious complications occurred. The follow-up period ranged from 5 to 12 months. The 6- and 12-month overall survival rates were 96.8% and 90.6%, respectively. According to the diagnosis of liver-en

关键词： magnetic resonance imaging interventional cryosurgery carcinoma, hepatocellular

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Effect of Annealing on the Microstructure and Properties of In-situ Cu-Nb Microcomposite Wires

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Acta Metallurgica Sinica(English Letters) 2016年第7期29卷 668-673页

作者： Li-Ping deng Bing-Shu Wang hong-Liang Xiang xiao-Fang Yang Rong-Mei Niu Ke Han School of Mechanical Engineering and Automation Fuzhou University Fuzhou 350116 China College of Materials Science and Engineering Chongqing University Chongqing 400044 China National High Magnetic Field Laboratory Tallahassee FL 32310 USA

The effects of annealing on microstructure, posite wire have been investigated. Neither changes in magnetoresistance, and hardness of an in situ Cu-Nb microcom- microstructure nor hardness were found until 500 ℃. Particularly, microstructural change within the Nb films was observed in the annealed samples. The room-temperature magnetoresistivity was almost negligible, while magnetoresistivity at -196℃increased with magnetic field. At temperature above 500 ℃, recovery and recrystallization occurred, and both the resistance and hardness decreased.

关键词： Annealing Microstructure Magnetoresistance Hardness Cu-Nb microcomposite wire

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Non-parabolic effect for femtosecond laser-induced ultrafast electro-absorption in solids

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Chinese Physics B 2020年第1期29卷 446-451页

作者： Li-Bo Liu hong-Xiang deng xiao-Tao Zu xiao-Dong Yuan Wan-Guo Zheng School of Physics University of Electronic Science and Technology of ChinaChengdu 610054China Research Center of Laser Fusion China Academy of Engineering PhysicsMianyang 621900China

A theoretical study for femtosecond laser-induced ultrafast electro-absorption of bulk solids is *** numerical results show that,in the case of low intensity of the pump laser where the interaction between the pump laser and solids is in the multi-photon regime,the energy band of solids can be approximately taken as a parabolic band and electro-absorption spectrums from the parabolic band and real band are nearly the ***,in the case of high intensity where the interaction is in the tunneling regime,spectrums from the parabolic band and real band are quite *** physical mechanism for the difference in the tunneling regime is *** find that the non-parabolic parts of the real energy band and Bragger scattering of electrons near the first Brillouin zone boundaries,which are neglected in previous studies,strongly influence the electro-absorption spectrum in the tunneling *** two physical processes cause the difference of *** theoretical results are in accordance with the experiment result.

关键词： ultrafast electro-absorption red-shift of absorption edge Bragger scattering effect multi-photon process

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Chemical Composition and Biological Activities of Essential Oil from the Rhizomes of Iris bulleyana

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Agricultural Sciences in China 2009年第6期8卷 691-696页

作者： deng Guo-bin ZHANG Han-bo XUE hong-fen CHEN Shan-na CHEN xiao-lan Department of Biology Yunnan University Kunming 650091 P.R.China

Iris bulleyana has long been used as a remedy for detoxication and detumescence. Hydrodistillation was used to extract the essential oil from its rhizomes, and 0.23% oil yield was obtained. Using gas chromatography-mass spectrometry （GC- MS） analysis, 31 chemicals including aristolone, cuparene, β-gurjunene, δ-amorphene, α-muurolene, α-cadinol, camphor, γ-elemene, and τ-cadinol were identified. The essential oil exhibited antibacterial activity against Acetobacter calcoacetica, Bacillus subtillis, Clostridium sporogenes, Clostridium perfringens, Escherichia coli, Salmonella typhii, Staphylococcus aureus, and Yersinia enterocolitica. Its antifungal and antioxidant activities were also tested.

关键词： Iris bulleyana essential oil antibacterial antifungal antioxidant GC-MS chemical components

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在他乡良缘更好吗——迁移流动对个人婚姻匹配的影响

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山西财经大学学报 2025年第1期47卷 48-59页

作者：黄小丽丁金宏王俊松华东师范大学社会发展学院华东师范大学地理科学学院

基于2010—2021年中国综合调查数据，实证研究迁移流动对婚姻匹配的影响。结果表明：婚前迁移显著提升了匹配到配偶的社会经济地位，其中自身社会经济地位提高和择偶场域改善是实现配偶社会经济地位提升的重要解释机制；与婚后迁移者相... 详细信息

基于2010—2021年中国综合调查数据，实证研究迁移流动对婚姻匹配的影响。结果表明：婚前迁移显著提升了匹配到配偶的社会经济地位，其中自身社会经济地位提高和择偶场域改善是实现配偶社会经济地位提升的重要解释机制；与婚后迁移者相比，婚前迁移通过拓展迁移者的社会交往，使其有机会结识社会经济地位更高的异性。异质性分析表明：相较于农业户籍，婚前迁移对非农户籍人群配偶质量的提升效应更显著；与未迁移人群相比，这种提升效应在中下阶层更明显。结论意味着，迁移流动有可能成为提升个体婚姻匹配质量的重要途径。

关键词：迁移流动婚姻匹配社会经济地位社会交往同质匹配择偶场域婚前迁移婚后迁移

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Selective binding of unsaturated aliphatic hydrocarbons by a pillar[5]arene

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Chinese Chemical Letters 2013年第8期24卷 707-709页

作者： xiao-Shi Hu hong-Mei deng Jian Li Xue-Shun Jia Chun-Ju Li Department of Chemistry Shanghai University

The complexation behavior of unsaturated fatty hydrocarbons,i.e.,1,7-octadiyne and 1,7-octadiene,by a perethylated pillar[5]arene has been investigated,which was compared with that for saturated n-octane. It was found that the host-guest binding strength increased in accordance with the electron-negativity of the terminal carbon atom on the guests：alkyne〉alkene〉alkane.

关键词： Molecular recognition Pillararenes Unsaturated hydrocarbons Supramolecular chemistry

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Design of cross-welded Na_(3)V_(2)(PO_(4))_(3)/C nanofibrous mats and their application in sodium-ion batteries

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Rare Metals 2022年第3期41卷 806-813页

作者： Chen Liu Zhao-Xi Zhang Rou Tan Ji-Wei deng Qiu-hong Li xiao-Chuan Duan Pen-Tung Sah Institute of Micro-Nano Science and Technology Xiamen UniversityXiamen 361005China College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China School of Electronic Information and Electrical Engineering Changsha UniversityChangsha 410022China

The rapid development of sodium-ion batteries (SIBs)requires the search for high-performance electrode materials with high energy density. In this regard, free-standing electrode materials without additional conductive agents,adhesives and metal foil current collectors can effectively reduce the overall electrode mass, thereby increasing the energy density.

关键词： density. electrode thereby

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Analysis of the Dynamic Response of a Shield Tunnel in Soft Soil Under a Metro-Train Vibrating Load

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Journal of China University of Mining and Technology 2006年第4期16卷 509-513页

作者： deng Fei-huang MO Hai-hong ZENG Qing-jun YANG xiao-jie College of Architecture ＆ Civil Engineering South China University of Technology Guangzhou Guangdong 510640 China School of Mechanics ＆ Civil engineering China University of Mining ＆ Technology Beijing 100083 China

This paper concerns the impact of an operating metro train on the structure of a shield tunnel lining and its soft foundation. An elastoplastic 3D dynamic finite difference model was established by using the FLAC3D numerical soft- ware. By fully considering the joints, the A-B-K segments and the soft stratum, the dynamic response of the shield tunnel buried in thick, soft soil under the vibrating load induced by a metro train was numerically simulated. The simulation result, for which the joint was considered, was compared with the result when the joint was not considered. The results show that an operating metro train induces a significant dynamic response in the structure of the lining of the shield tunnel and its soft foundation. The severe dynamic response zones of the lining structure are largely distributed in the range of the lower half of the segment-ring and the nearer to the bottom of the segment-ring, the more severe the response. Of two horizontally symmetric, corresponding places on the segment lining, the one near the joint is more severe in its dynamic response than that of the one far from the joint; the nearer the zone of the foundation soil to the lower half of the seg- ment-ring, the more severe the dynamic response. The maximum shear strain of the foundation soil takes place near the joint between two normal segments at the bottom. The dynamic response influenced by joints is more severe than the response not influenced by joints, showing that the non-joint assumption is somewhat impractical.

关键词： dynamic response train vibrating load joint shield tunnel segment

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A-Browder's Theorem and Generalized a-Weyl's Theorem

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Acta Mathematica Sinica,English Series 2007年第5期23卷 951-960页

作者： xiao hong CAO College of Mathematics and Information Science Shaanxi Normal University

Two variants of the essential approximate point spectrum are discussed. We find for example that if one of them coincides with the left Drazin spectrum then the generalized a-Weyl＇s theorem holds, and conversely for ... 详细信息

关键词： a-Browder's theorem generalized a-Weyl's theorem spectrum

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Lattice Structure for Paraunitary Linear-phase Filter Banks with Accuracy

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Acta Mathematica Sinica,English Series 2006年第3期22卷 679-688页

作者： hong Ying xiao School of Mathematics Xiamen University

Multivariate filter banks with a polyphase matrix built by matrix factorization （lattice structure） were proposed to obtain orthonormal wavelet basis. On the basis of that, we propose a general method of constructing filter banks which ensure second and third accuracy of its corresponding scaling function. In the last part, examples with second and third accuracy are given.

关键词： Paraunitary Linear-phase Accuracy

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