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Chinese Journal of Polymer Science 2014年第2期32卷 169-176页

作者： wei-li zheng wei-li Hu 陈仕艳 Yi zheng Bi-hui Zhou 王华平 Key Laboratory of High Performance Fibers and Products of Ministry of Education State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University

The freshly prepared water-wet amidoximated bacterial cellulose （Am-BC） serves as an effective nanoreactor to synthesis zinc oxide nanoparticles by in situ polyol method. The obtained ZnO/Am-BC nanocomposites have been characterized by field emission scanning electron microscopy （FE-SEM）, X-ray diffraction （XRD）, Fourier transformed infrared spectroscopy （FTIR） and thermogravimetric analysis （TGA）. The influence of the zinc acetate concentration on the morphologies and size ofZnO nanoparticles and the possible formation mechanism were discussed. The results indicated that uniform ZnO nanoparticles were homogeneously anchored on the Am-BC nanofibers through strong interaction between the hydroxyl and amino groups of Am-BC and ZnO nanoparticles. The loading content of ZnO nanoparticles is higher using Am-BC as a template than using the unmodified bacterial cellulose. The resultant nanocomposite synthesized at 0.05 wt% shows a high photocatalytic activity （92%） in the degradation of methyl orange.

关键词： Amidoximated bacterial cellulose Nanoreactor ZnO nanoparticles High photocatalytic activity.

Proteomic Analyses of the Shrimp White Spot Syndrome Virus

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Virologica Sinica 2008年第3期23卷 157-166页

作者： Yan-wei TAN zheng-li SHI State key Laboratory of Virology Wuhan Institute of Virology Chinese Academy of Sciences （CAS） Wuhan 430071 China

White spot syndrome virus (WSSV), a unique member within the virus family Nimaviridae, is the most notorious aquatic virus infecting shrimp and other crustaceans and has caused enormous economic losses in the shrimp farming industry worldwide. Therefore, a comprehensive understanding of WSSV morphogenesis, structural proteins, and replication is essential for developing prevention measures of this serious parasite. The viral genome is approximately 300kb and contains more than 180 open reading frames (ORF). However, most of proteins encoded by these ORF have not been characterized. Due to the importance of WSSV structural proteins in the composition of the virion structure, infection process and interaction with host cells, knowledge of structural proteins is essential to understanding WSSV entry and infection as well as for exploring effective prevention measures. This review article summarizes mainly current investigations on WSSV structural proteins including the relative quantities, localization, function and protein-protein interactions. Traditional proteomic studies of 1D or 2D gel electrophoresis separations and mass spectrometry (MS) followed by database searches have identified a total of 39 structural proteins. Shotgun proteomics and iTRAQ were initiated to identify more structural proteins. To date, it is estimated that WSSV is assembled by at least 59 structural proteins, among them 35 are defined as the envelope fraction (including tegument proteins) and 9 as nucleocapsid proteins. Furthermore, the interaction within several major structural proteins has also been investigated. This identitification and characterization of WSSV protein components should help in the understanding of the viral assembly process and elucidate the roles of several major structural proteins.

关键词： White spot syndrome virus (WSSV) Proteomic analysis Structural proteins

Genotyping of White Spot Syndrome Virus in Chinese Cultured Shrimp during 1998-1999

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Virologica Sinica 2011年第2期26卷 123-130页

作者： Yan-wei Tan zheng-li Shi State Key Laboratory of Virology Wuhan Institute of Virology Chinese Academy of Sciences Wuhan 430071China

Recent studies showed that white spot syndrome virus(WSSV) isolates from different geographic locations share a high genetic similarity except the variable regions in ORF23/24 and ORF14/15,and variable number of tandem repeats(VNTR) within *** this study,genotyping was performed according to these three variable regions among WSSV isolates collected during 1998/1999 from Southern *** WSSV isolates contain a deletion of 1168,5657,5898,9316 and 11093 bp,respectively in the variable region ORF23/24 compared with WSSV-TW,and a deletion of 4749 or 5622 bp in the variable region ORF14/15 relative to *** types of repeat units(RUs)(6,8,9 and 13 RUs) in ORF94 were detected in these isolates,with the shortest 6 RUs as the most prevalent *** results provide important information for a better understanding of the spatio-temporal transmission mode and the WSSV genetic evolution lineage.

关键词： WSSV Genotyping Variable region ORF23/24 ORF 14/15 ORF94, China

Bovine Serum Albumin Loaded Solid lipid Nanoparticles Prepared by Double Emulsion Method

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Chemical Research in Chinese Universities 2010年第1期26卷 136-141页

作者： li Zhen li Xin-wei zheng li-qiang liN Xiao-hong GENG Fei YU li Key Laboratory of Colloid and Interface Chemistry Ministry of Education Shandong University Jinan 250100 P. R. China

Solid lipid nanoparticles loaded with bovine serum albumin（BSA） were prepared by a double emulsion method. As the mass fraction of the model drug BSA increased from 0 to 15%, the particle size gradually increased. The physical stability of the nanoparticles was investigated by zeta potential measurement and they were shown to be quite stable. Fluorescence spectroscopy confirmed that the loaded position of BSA was on the interface between the inner aqueous phase and the solid lipid phase. Both Fourier-transform infrared spectroscopy and circular dichroism spectra indicate that BSA in the nanoparticles was not destroyed, but the secondary structure was disrupted slightly.

关键词： Solid lipid nanoparticle Double emulsion Bovine serum albumin Drug model

Accurately tracking hypersonic gliding vehicles via an LEO mega-constellation in relay tracking mode

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Journal of Systems Engineering and Electronics 2024年第1期35卷 211-221页

作者： li Zhao WANG Yidi zheng wei College of Aerospace Science and Engineering National University of Defense TechnologyChangsha 410073China

In order to effectively defend against the threats of the hypersonic gliding vehicles(HGVs),HGVs should be tracked as early as possible,which is beyond the capability of the ground-based *** benefited by the developing megaconstellations in low-Earth orbit,this paper proposes a relay tracking mode to track HGVs to overcome the above *** whole tracking mission is composed of several tracking intervals with the same *** each tracking interval,several appropriate satellites are dispatched to track the *** that are planned to take part in the tracking mission are selected by a new derived observability *** tracking performances of the proposed tracking mode and the other two traditional tracking modes,including the stare and track-rate modes,are compared by *** results show that the relay tracking mode can track the whole trajectory of a HGV,while the stare mode can only provide a very short tracking ***,the relay tracking mode achieve higher tracking accuracy with fewer attitude controls than the track-rate mode.

关键词： target tracking mega-constellation hypersonic gliding vehicle(HGV) sensor selection observability analysis

Biological conduits combining bone marrow mesenchymal stem cells and extracellular matrix to treat long-segment sciatic nerve defects

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Neural Regeneration Research 2015年第6期10卷 965-971页

作者： Yang Wang zheng-wei li Min Luo Ya-jun li Ke-qiang Zhang Department of Orthopedics China-Japan Friendship HospitalJilin University Department of Orthopedics Second HospitalJilin University Mathematics School Jilin University

The transplantation of polylactic glycolic acid conduits combining bone marrow mesenchymal stem cells and extracellular matrix gel for the repair of sciatic nerve injury is effective in some respects, but few data comparing the biomechanical factors related to the sciatic nerve are available. In the present study, rabbit models of 10-mm sciatic nerve defects were prepared. The rabbit models were repaired with autologous nerve, a polylactic glycolic acid conduit ＋ bone marrow mesenchymal stem cells, or a polylactic glycolic acid conduit ＋ bone marrow mesenchymal stem cells ＋ extracellular matrix gel. After 24 weeks, mechanical testing was performed to determine the stress relaxation and creep parameters. Following sciatic nerve injury, the magnitudes of the stress decrease and strain increase at 7,200 seconds were largest in the polylactic glycolic acid conduit ＋ bone marrow mesenchymal stem cells ＋ extracellular matrix gel group, followed by the polylactic glycolic acid conduit ＋ bone marrow mesenchymal stem cells group, and then the autologous nerve group. Hematoxylin-eosin staining demonstrated that compared with the polylactic glycolic acid conduit ＋ bone marrow mesenchymal stem cells group and the autologous nerve group, a more complete sciatic nerve regeneration was found, including good myelination, regularly arranged nerve fibers, and a completely degraded and resorbed conduit, in the polylactic glycolic acid conduit ＋ bone marrow mesenchymal stem cells ＋ extracellular matrix gel group. These results indicate that bridging 10-mm conduit ＋ bone marrow mesenchymal stem sciatic nerve defects with a polylactic glycolic acid cells ＋ extracellular matrix gel construct increases the stress relaxation under a constant strain, reducing anastomotic tension. Large elongations under a constant physiological load can limit the anastomotic opening and shift, which is beneficial for the regeneration and functional reconstruction of sciatic nerve. Better regeneration was fou

关键词： nerve regeneration peripheral nerve injury rabbits sciatic nerve injury autologous nerye repair polylactic glycolic acid conduit extracellular matrix gel grafting stress relaxation creep viscoelasticity histomorphology electrophysiology neural regeneration

Noise character analysis and the restraint of self-pulsation laser diodes

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Optoelectronics Letters 2008年第3期4卷 168-171页

作者： JIANG Ning PAN wei LUO Bin ZHANG wei-li zheng Di Institute of Optical Communication and Optical Devices South West Jiaotong University Chengdu 610031 China

We calculate the Langevin noise sources of self-pulsation laser diodes,analyze the effects of active region noise and saturable-absorption region noise on the power fluctuation as well as period fluctuation,and propose a novel method to restrain the noise effects. A visible SIMUliNK model is established to simulate the system,the results indicate that the effects of noise in absorption region can be ignored;that with the increase of DC injecting current,the noise effects enhance power jitter,and nevertheless,the period jitter is decreased;and that with external sinusoidal current modulating the self-pulsation laser diode,the noise-induced power jitter and period jitter can be suppressed greatly. This work is valuable for clock recovery in all-optical network.

关键词：噪音分析分析方法激光二极管预防措施

Treatment for subtrochanteric fracture and subsequent nonunion in an adult patient with osteopetrosis:A case report and review of the literature

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World Journal of Clinical Cases 2021年第35期9卷 11007-11015页

作者： Hao Yang Guo-Xi Shao Zhen-Wu Du zheng-wei li Department of Orthopedics The Second Hospital of Jilin UniversityChangchun 130041Jilin ProvinceChina Departments of Orthopedics The Second Hospital of Jilin UniversityChangchun 130041Jilin ProvinceChina

BACKGROUND As a congenital metabolic bone disease caused by defective osteoclastic resorption of immature bone,osteopetrosis is characterized by diffused sclerosis of bones,brittle bones,easy fracturing,narrow medullary canals,and a weak fracture healing *** present,clear standards and principles for the treatment of fractures in patients with osteopetrosis are ***-operative treatment can prevent fracture hematoma and preserve the blood supply to the bone fragments,while being associated with frequent failures and higher mortality ***,closed reduction and internal fixation with intramedullary nail(CRIF+IMN)approaches can also protect blood supply to the fracture ***,IMN cannot be used for the vast majority of patients with osteopetrosis due to the narrowing of medullary ***,open reduction and internal fixation with plate remains the most appropriate surgical method for treating fractures in patients with osteopetrosis,but this approach is complicated by the lack of intramedullary hematopoiesis in such *** healing primarily depends on the blood supply to the external *** reduction can also easily destroy the periosteum and cause delayed fracture healing or even nonunion;however,CRIF may be the most practical *** a result,it would be prudent to solve the difficulty of drilling during the operation and the problem of postoperative *** SUMMARY In 2018,we treated an adult patient with osteopetrosis presenting with a subtrochanteric *** fracture was fixed using a femoral locking compression *** of delayed consolidation,at 12 mo postoperatively the patient was further treated with platelet-rich plasma(PRP)combined with radial extracorporeal shock wave therapy(rESWT).Antero-posterior and lateral radiographs obtained at the latest follow-up(10 mo)showed that the callus had grown at the original fracture site,and the medial fracture line almost *** Ost

关键词： Osteopetrosis Subtrochanteric fracture Nonunion Platelet-rich plasma Radial extracorporeal shock wave therapy Case report

Fluorescence Properties of Porphyrin Dimers Incorporating an Anhydride linker

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Chemical Research in Chinese Universities 2006年第6期22卷 684-687页

作者： FA Huan-bao YIN wei zheng Wen-qi li Di SHAN Ning WANG Xing-qiao College of Chemistry Jilin University Changchun 130023 P. R. China

A preliminary study on a novel free base porphyrin dimer and a zinc prophyrin dimer by comparing their fluorescence properties with those of the corresponding monomers is presented. The fluorescence intensity of the free base dimer is five times higher than that of the monomer, but the fluorescence intensity of the zinc porphyrin dimer is nearly similar to that of the zinc porphyrin monomer. The emission spectra show that energy transfer occurs between the two units.

关键词： Porphyrin dimer Zinc dimer Fluorescence property

Steady-state Voltage Security-constrained Optimal Frequency Control for Weak HVDC Sending-end AC Power Systems

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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 658-669页

作者： Qiangqiang Wang liangzhong Yao Jian Xu Yuping zheng wei li wei Wang School of Electrical Engineering and Automation Wuhan UniversityWuhan 430072China Hubei Engineering and Technology Research Center for AC/DC Intelligent Distribution Network(Wuhan University) Wuhan 430072China State Key Laboratory of Smart Grid Protection and Control NARI Group Corporation(State Grid Electric Power Research Institute)Nanjing 211106China

Due to the fact that a high share of renewable energy sources(RESs)are connected to high-voltage direct current(HVDC)sending-end AC power systems,the voltage and frequency regulation capabilities of HVDC sending-end AC power systems have *** has resulted in potential system operating problems such as overvoltage and overfrequency,which occur simultaneously when block faults exist in the HVDC *** this study,a steady-state voltage security-constrained optimal frequency control method for weak HVDC sending-end AC power systems is *** integrated virtual inertia control of RESs is employed for system frequency *** dynamic reactive power compensation devices are utilized to control the voltage of all nodes meet voltage security ***,an optimization model that simultaneously considers the frequency and steady-state voltage security constraints for weak HVDC sending-end AC power systems is *** optimal control scheme with the minimum total cost of generation tripping and additional dynamic reactive power compensation required is obtained through the optimization *** are conducted on a modified IEEE 9-bus test system and practical Qing-Yu line commutated converter based HVDC(LCC-HVDC)sending-end AC power system to verify the effectiveness of the proposed method.

关键词： Renewable energy source(RES) high-voltage direct current(HVDC) AC power system optimal frequency control steady-state voltage security dynamic reactive power compensation