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Polyacrylamide hydrogels with phenylboronic acid moieties for the imprinting of proteins

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Chinese Chemical Letters 2010年第12期21卷 1487-1489页

作者： Yan Wang Zhi Hua Chai Hong Yan He Yi Zhe Jiang Guo qi fu Key Laboratory of functional Polymer Materials of Ministry of Education Institute of Polymer Chemistry Nankai University Tianjin 300071 China

In this letter,N-acryloyl-3-aminophenylboronic acid（AAPBA） was synthesized and then examined as a new functional monomer for protein *** was allowed to be copolymerized with acrylamide to produce hemoglobin- or lysozyme-imprinted *** template rebinding tests,the imprinted gels showed significant increase in the specific binding with the increase of the AAPBA amounts in the prepolymerization *** results indicate that AAPBA may be a useful functional monomer for its moderate interactions with protein molecules.

关键词： Protein imprinting Hydrogels Hemoglobin Lysozyme 3-Aminophenylboronic acid

Subclavian artery stenting via bilateral radial artery access:Four case reports

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World Journal of Clinical Cases 2022年第5期10卷 1747-1753页

作者： Tao qiu Sheng-qi fu Xiao-Yong Deng Ming Chen Xiao-Yan Dai Department of Neurology Zigong First People's HospitalZigong 643000Sichuan ProvinceChina Department of Equipment Management Zigong First People's HospitalZigong 643000Sichuan ProvinceChina

BACKGROUND Subclavian artery stenosis refers to the stenosis in the lumen caused by the presence of plaque or thrombus in the subclavian *** is a common problem in endovascular *** fact,conventional subclavian artery stenting via the femoral artery approach is effective and ***,because femoral artery puncture is not easy to stop bleeding,it requires longer femoral artery compression or more expensive hemostatic materials,such as *** need to be catheterized and bedridden for a longer time,which may lead to many complications,such as *** SUMMARY Herein,we reported a new interventional therapy of subclavian *** March 1,2020 to August 31,2021,we operated on four patients with subclavian artery stenting via bilateral radial artery *** After reviewing four cases of successful placement of clavicular artery stents via bilateral radial arteries,we concluded that bilateral radial artery approach is *** artery stenting is safe,effective,and *** is an excellent alternative to the traditional femoral artery procedure,with few complications and high comfort degree.

关键词： Subclavian artery stenosis Bilateral radial artery Stenting Subclavian artery steal syndrome Case report

Selective recognition in molecularly imprinted polymer and its chromatographic characterization for cinchonine

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Journal of Central South University of Technology 2005年第Z1期12卷 102-107页

作者： ZHONG Shi-an HUANG Ke-long LEI qi-fu XIANG Hai-yan School of Chemistry and Chemical Engineering Central South University Changsha 410083 China School of Chemistry and Chemical Engineering Central South University Changsha 410083 China School of Chemistry and Chemical Engineering Central South University Changsha 410083 China School of Chemistry and Chemical Engineering Central South University Changsha 410083 China

A molecularly imprinting polymer (MIP) was synthesized via bulk polymerization under different conditions using anti-ague drug cinchonine (CN) as template. Infrared spectra (IR) results show that the template CNand functional monomer α-methyl acrylic acid (MAA) formed complexes before polymerization and the structure of complexes was simulated by Hyperchem. The results indicate that there are hydrogen bond or ionic bond between functional monomer and template molecule in acetonitrile solution. The MIP made in cold-initiated photo-polymerization has higher separation performance than that in the therm-initiated polymerization. The separation of the isomers CN and cinchonidine (CD) can be successfully obtained when its separate factor α reaches 1.82. Scatchard analysis suggests that the MIP recognizing CN with two classes of binding sites. The partition coefficient Kd, 1 and apparent maximum number nmax, 1 of binding sites with high affinity are 131.43 μmol/L and 58. 90 μmol/g, respectively,while Kd, 2 and nmax, 2 of binding sites with low affinity are 2.32 mmol/L and 169.08 mmol/g, respectively.

关键词： molecular imprinting cinchonine chiral separation HPLC

Aggressive angiomyxoma of the epididymis: A case report

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World Journal of Clinical Cases 2023年第29期11卷 7214-7220页

作者： Xu-Jie Liu Jia-Hao Su qi-Zhong fu Ying Liu Department of Urology Surgery Affiliated Zhongshan Hospital of Dalian UniversityDalian 116001Liaoning ProvinceChina

BACKGROUND Aggressive angiomyolipoma is an extremely rare benign mesenchymal tumor that was originally described as a locally recurrent mucinous spindle cell ***-ressive angiomyolipoma originates from myofibroblasts,vascular smooth muscle cells,or fibroblasts,and displays various phenotypes of myofibroblasts and abnor-mal muscle *** angiomyolipoma was first identified in 1983 and fewer than 50 male patients have been reported to *** is an extremely rare mesenchymal tumour and often confused with other *** with epididymal aggressive angiomyolipoma lack typical symptoms,most of which occur incidentally,although some patients may experience mild pain,discomfort,and *** may be exacerbated by pressure from the *** SUMMARY A 66-year-old male was admitted to the hospital on January 14,2022 with chief complaint of swelling in the left scrotum for one *** was no apparent cause for the *** patient did not consult with any doctor or receive any treatment for the *** enlarged scrotum increased in size gradually until it reached approximately the size of a goose egg,and was accompanied by discom-fort and swelling of the left cavity of the *** patient had no history of any testicular trauma,infection,or urinary tract *** patient urinated freely,1-2 times at night,without urgency,dysuria(painful urination),or *** was no significant family history of *** patient underwent excision of the enlarged tumour and the left epididymis under general anaes-thesia on January 18,*** months of follow-up revealed no *** patient was satisfied with the *** Aggressive angiomyolipoma is extremely rare clinically and often confused with other *** pathogenesis of aggressive angiomyolipoma is unclear and the clinical presentation is mostly a painless enlarged *** diagnosis of aggressive angiomyolipoma requires a combination of medi

关键词： Aggressive angiomyxoma Mesenchymal tumor Scrotal mass Epididymal malignancy Orchiectomy Male reproductive system neoplasms Case report

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一种具有业务感知的多路径QoS路由策略

计算机学报 2014年第10期37卷 2153-2164页

作者：符琦湖南科技大学计算机科学与工程学院湖南湘潭411201

在基于IEEE 802.11e协议的无线Mesh网络多路径数据传输过程中,为了有效区分不同类型的多媒体数据,802.11e协议的EDCA机制采用了4个具有固定信道竞争参数的AC队列来实现不同业务类型数据包的存储转发,这种参数预设的竞争机制在多跳环境... 详细信息

在基于IEEE 802.11e协议的无线Mesh网络多路径数据传输过程中,为了有效区分不同类型的多媒体数据,802.11e协议的EDCA机制采用了4个具有固定信道竞争参数的AC队列来实现不同业务类型数据包的存储转发,这种参数预设的竞争机制在多跳环境下不能提供有效的业务区分与QoS性能保障.同时,传统的多路径路由大多因为采用了最小跳数为其路由度量,未能反映实时的链路质量和节点状态,因而无法为不同类型的业务流提供其所需的高质量传输路径.为此,文中提出一种基于具有业务感知的多路径QoS路由策略TA2 P(Traffic-Aware AOMDV Protocol),该策略对静态EDCA信道竞争参数分配机制进行了改进,并提出了适用于不同业务类型数据传输的路由判据,以便TA2P能及时地根据MAC层反馈来的统计数据进行高质量路由的选择.仿真结果表明,该策略有效地实现了不同类型业务流之间对信道及无线链路的公平使用.

关键词： 802.11e 无线Mesh网络多媒体多路径路由业务感知

Ambient noise as the new source for urban engineering seismology and earthquake engineering: a case study from Beijing metropolitan area

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Earthquake Science 2014年第1期27卷 89-100页

作者： Lanbo Liu qi-fu Chen Weijun Wang Eric Rohrbach Department of Civil & Environmental Engineering University of Connecticut Institute of Earthquake Science China Earthquake Administration Institute of Geology and Geophysics Chinese Academy of Sciences

In highly populated urban centers, traditional seismic survey sources can no longer be properly applied due to restrictions in modern civilian life styles. The ambient vibration noise, including both microseisms and microtremor, though are generally weak but available anywhere and anytime, can be an ideal supplementary source for conducting seismic surveys for engineering seismology and earthquake engineering. This is funda- mentally supported by advanced digital signal processing techniques for effectively extracting the useful information out from the noise. Thus, it can be essentially regarded as a passive seismic method. In this paper we first make a brief survey of the ambient vibration noise, followed by a quick summary of digital signal processing for passive seismic surveys. Then the applications of ambient noise in engi- neering seismology and earthquake engineering for urban settings are illustrated with examples from Beijing metro- politan area. For engineering seismology the example is the assessment of site effect in a large area via microtremor observations. For earthquake engineering the example is for structural characterization of a typical reinforced con- crete high-rise building using background vibration *** showing these examples we argue that the ambient noise can be treated as a new source that is economical, practical, and particularly valuable to engineering seis- mology and earthquake engineering projects for seismic hazard mitigation in urban areas.

关键词： Ambient noise Resonance frequency -Ground motion amplification Seismic vulnerability ~Horizontal to vertical spectra/ratio (HVSR) ~Seismic interferometry (SI) ~ Beijing metropolitan area

Delay-optimal multi-satellite collaborative computation offloading supported by OISL in LEO satellite network

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Journal of Systems Engineering and Electronics 2024年第4期35卷 805-814页

作者： ZHANG Tingting GUO Zijian LI Bin FENG Yuan fu qi HU Mingyu QU Yunbo School of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijing 100081China Yangtze Delta Region Academy Beijing Institute of TechnologyJiaxing 314000China School of Information and Electronics Beijing Institute of TechnologyBeijing 100081China China Research and Development Academy of Machinery Equipment Beijing 100089China

By deploying the ubiquitous and reliable coverage of low Earth orbit(LEO)satellite networks using optical inter satel-lite link(OISL),computation offloading services can be provided for any users without proximal servers,while the resource limita-tion of both computation and storage on satellites is the impor-tant factor affecting the maximum task completion *** this paper,we study a delay-optimal multi-satellite collaborative computation offloading scheme that allows satellites to actively migrate tasks among themselves by employing the high-speed OISLs,such that tasks with long queuing delay will be served as quickly as possible by utilizing idle computation resources in the *** satisfy the delay requirement of delay-sensi-tive task,we first propose a deadline-aware task scheduling scheme in which a priority model is constructed to sort the order of tasks being served based on its deadline,and then a delay-optimal collaborative offloading scheme is derived such that the tasks which cannot be completed locally can be migrated to other idle *** results demonstrate the effective-ness of our multi-satellite collaborative computation offloading strategy in reducing task complement time and improving resource utilization of the LEO satellite network.

关键词： low Earth orbit(LEO)satellite network computation offloading task migration resource allocation

An Integrated Information Retrieval Support System for Campus Network

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Wuhan University Journal of Natural Sciences 2006年第1期11卷 42-46页

作者： qiAO Lin HUANG Wei-tong WEN qi fu Xiao-long Pepartment of Computer Science and Technology Tsinghua University Beijing 100084 China

This paper presents a new integrated information retrieval support system （IIRSS） which can help Web search engines retrieve cross-lingual information from hereto geneous resources stored in multi-databases in Intranet. The IIRSS, with a three-layer architecture, can cooperate with other application servers running in Intranet. By using intelligent agents to collect information and to create indexes on the-fly, using an access control strategy to confine a user to browsing those accessible documents for him/her through a single portal, and using a new cross-lingual translation tool to help the search engine retrieve documents, the new system provides controllable information access with different authorizations, personalized services, and real-time information retrieval.

关键词： information retrieval intelligent agent Web seareh integrated information retrieval support system

Microstructure evolution of semi-solid Mg2Si/A356 composites during remelting process

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China Foundry 2020年第5期17卷 384-388页

作者： Yong Hu Sheng-qi fu Long-zhi Zhao Da-hao Wang Fei Liu School of Materials Science and Engineering East China Jiaotong UinversityNanchang 330013China Key Laboratory of Advanced Materials for Vehicles&Laser Additive Manufacturing of Nanchang City East China Jiaotong UniversityNanchang 330013China

The semi-solid processed Mg2Si/A356 composites were fabricated using a sloping plate,and the phase and morphology evolution of the semi-solid Mg2Si/A356 slurry during the remelting process was *** indicate that compared to as-cast microstructure,the size of primaryα-Al phase and Mg2Si phase of semi-solid microstructure fabricated by using a sloping plate decreases and the morphology ofα-Al phase becomes fine and *** increasing the reheating temperature and prolonging the holding time,the primaryα-Al phase spheroidizes,the liquid fraction in semi-solid microstructure increases,and the Chinese script Mg2Si phase embedded in the primaryα-Al phase cannot be *** Chinese script Mg2Si phase is distributed in the secondaryα-Al phase and becomes *** net-shaped eutectic phase also becomes finer after *** optimum remelting parameters suitable for thixoforming in this study are remelting at 580℃for 30 min.

关键词： semi-solid Mg2Si aluminum matrix composites remelting microstructure