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Chinese Journal of Chemistry 2011年第9期29卷 1955-1960页

作者： Ren, Yueping Liu, jia feng, feng chen, Tingzhong Fang, Yun School of Chemical ＆ Material Engineering Jiangnan University Wuxi Jiangsu 214122 China

Controlled synthesis of asymmetrical gold nanokites was realized by reducing HAuCl4 with polyvinyl alcohol （PVA） in PVA-sodium dodecyl sulfate （SDS） aggregations aqueous solution at room temperature without any addi- tional reducing agents. The crystal structures, optical property and growth process of the gold nanokites were inves- tigated by X-ray diffraction （XRD）, Vis-NIR spectrum and transmission electron microscope （TEM）. HAuCl4 con- centration dramatically influenced the morphologies of the products. When HAuCl4 concentration was increased from 0.5 mmol·L^-1 to 2.2 mmol·L^-1, the products changed from network-like nanostructures to nanokites, nanoleaves and microplates. SDS was indispensable for the formation of gold nanokites and without SDS su- per-branched structures became the dominant products.

关键词： gold nanostructures nanokites polyvinyl alcohol sodium dodecyl sulfate

Improved Diamond Search Algorithm for H.264/AVC Video Coding Standard

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Wuhan University Journal of Natural Sciences 2008年第1期13卷 62-66页

作者： HU feng LIU jia chen Shuzhen School of Electronic Information Wuhan University Wuhan 430072 Hubei China

Diamond search （DS） is an excellent fast block matching motion estimation （BMME） algorithm. In this paper, we propose an improved diamond search （IDS） algorithm, which revises the two search patterns of DS. The proposed algorithm is compared with several mainstream algorithms. The simulation results show that the proposed algorithm over DS can be up to 20% gain on speedup on average, while maintain the similar or even better quality, both objectively and subjectively. The proposed algorithm is also competitive with other fast algorithms.

关键词： diamond search H.264 motion estimation peak signal to noise ratio

A Two-Layer Real-Time Rate Control Algorithm Based on Lagrange Optimum Algorithm

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Wuhan University Journal of Natural Sciences 2009年第1期14卷 35-38页

作者： HU feng LIU jia chen Shuzhen School of Electronic Information Wuhan University Wuhan 430079 Hubei China

Because of the iterative process in the rate control algorithm of the H.264 draft, it is not suitable for real-time transmission. A two-layer real-time rate control algorithm based on the Lagrange optimum algorithm is proposed. This algorithm consists of two layers, namely, the group of pictures （GOP） layer and the frame layer. The simulation results show that the proposed algorithm is competitive in terms of peak signal-to-noise ratio （PSNR）, real bitrates and the Q-value among frames over the original algo- rithm.

关键词： H.264 Lagrange optimum peak signal to noise ratio(PSNR) quantize rate-distortion

Efficacy of chitosan and sodium alginate scaffolds for repair of spinal cord injury in rats

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Neural Regeneration Research 2018年第3期13卷 502-509页

作者： Zi-ang Yao feng-jia chen Hong-li Cui Tong Lin Na Guo Hai-ge Wu School of Life Science and Technology Dalian University

Spinal cord injury results in the loss of motor and sensory pathways and spontaneous regeneration of adult mammalian spinal cord neurons is limited. Chitosan and sodium alginate have good biocompatibility, biodegradability, and are suitable to assist the recovery of damaged tissues, such as skin, bone and nerve. Chitosan scaffolds, sodium alginate scaffolds and chitosan-sodium alginate scaffolds were separately transplanted into rats with spinal cord hemisection. Basso-Beattie-Bresnahan locomotor rating scale scores and electrophysiological results showed that chitosan scaffolds promoted recovery of locomotor capacity and nerve transduction of the experimental *** days after surgery, chitosan scaffolds retained the original shape of the spinal cord. Compared with sodium alginate scaffolds- and chitosan-sodium alginate scaffolds-transplanted rats, more neurofilament-H-immunoreactive cells （regenerating nerve fibers） and less glial fibrillary acidic protein-immunoreactive cells （astrocytic scar tissue） were observed at the injury site of experimental rats in chitosan scaffold-transplanted rats. Due to the fast degradation rate of sodium alginate, sodium alginate scaffolds and composite material scaffolds did not have a supporting and bridging effect on the damaged tissue. Above all, compared with sodium alginate and composite material scaffolds, chitosan had better biocompatibility, could promote the regeneration of nerve fibers and prevent the formation of scar tissue,and as such, is more suitable to help the repair of spinal cord injury.

关键词： nerve regeneration spinal cord injury chitosan sodium alginate functional recovery scaffold neurofilament-H glial fibrillary acidic protein scar tissue locomotor capacity neural regeneration

Recent advances in surgical management strategies for hepatocellular carcinoma

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hLife 2024年第9期2卷 439-453页

作者： Zhen-Bin Ding Ying-Hong Shi jia-feng chen jia Fan jian Zhou Department of Liver Surgery and Transplantation Liver Cancer InstituteZhongshan HospitalFudan UniversityShanghaiChina Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education ShanghaiChina Institutes of Biomedical Sciences Fudan UniversityShanghaiChina

Hepatocellular carcinoma(HCC)is a signiﬁcant global health challenge,requiring innovative methods to improve patient *** to different disease backgrounds,different HCC management guidelines have been devel-oped,especially in theﬁeld of surgical treatment,with the aim of reducing the risk of incidence and enhancing the therapeutic *** on the progress and challenges in the development of surgical management stra-tegies for HCC in recent years,this article systematically elaborates on the research and clinical application of pre-cision surgical treatment,including improvement of the surgical evaluation system,breakthroughs in surgical tech-niques,and updates in perioperative treatment *** addition,clinical research on surgical treatment for HCC has received unprecedented *** conclusions of innovative clinical trials in surgery will provide important guidance for the development of practice guidelines and the selection of appropriate treatment strate-gies for HCC patients.

关键词： hepatocellular carcinoma guidelines surgical management strategies clinical research prognosis

Synthesis and characterization of biodegradable polymer:Poly (ethene maleic acid ester-co-D,L-lactide acid)

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Chinese Chemical Letters 2007年第5期18卷 605-608页

作者： Mei Na Huang Yan feng Luo jia chen Yong Gang Li Chun Hua Fu Yuan Liang Wang Research Center of Bioinspired Material Science and Engineering （BIMSEC） Bioengineering College of Chongqing University Chongqing 400044 China

A novel biodegradable polymer--poly （ethene maleic acid ester-co-D,L-lactide acid） was synthesized by copolymerizing lactide and prepolymer, which was prepared by the condensation of maleic anhydride and glycol, using p-toluene sulphonic acid as a catalyst, attempting to improve the hydrophilicity, increase flexibility and modulate the degradation rate. FTIR,^1H NMR, MALLS and DSC were employed to characterize these polymers.

关键词： Maleic anhydride Glycol Lactide Copolymerization

Understanding the local structure and thermophysical behavior of Mg-La liquid alloys via machine learning potential

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 439-449页

作者： jia Zhao Taixi feng Guimin Lu National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and TechnologyShanghai 200237China Joint International Laboratory for Potassium and Lithium Strategic Resources East China University of Science and TechnologyShanghai 200237China

The local structure and thermophysical behavior of Mg-La liquid alloys were in-depth understood using deep potential molecular dynamic(DPMD) simulation driven via machine learning to promote the development of Mg-La alloys. The robustness of the trained deep potential(DP) model was thoroughly evaluated through several aspects, including root-mean-square errors(RMSEs), energy and force data, and structural information comparison results;the results indicate the carefully trained DP model is reliable. The component and temperature dependence of the local structure in the Mg-La liquid alloy was analyzed. The effect of Mg content in the system on the first coordination shell of the atomic pairs is the same as that of temperature. The pre-peak demonstrated in the structure factor indicates the presence of a medium-range ordered structure in the Mg-La liquid alloy, which is particularly pronounced in the 80at% Mg system and disappears at elevated temperatures. The density, self-diffusion coefficient, and shear viscosity for the Mg-La liquid alloy were predicted via DPMD simulation, the evolution patterns with Mg content and temperature were subsequently discussed, and a database was established accordingly. Finally, the mixing enthalpy and elemental activity of the Mg-La liquid alloy at 1200 K were reliably evaluated,which provides new guidance for related studies.

关键词： magnesium-lanthanum liquid alloys local structure macroscopic properties thermodynamic behavior deep potential mo-lecular dynamic simulation

Low-Power Design of Ethernet Data Transmission

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Journal of Electronic Science and Technology 2014年第4期12卷 371-375页

作者： Wen-Ming Pan Qin Zhang jia-feng chen Hao-Yuan Wang jia-Chong Kan the Guangzhou Institute of Advanced Technology Chinese Academy of Sciences the School of Physic and Telecommunication Engineering South Normal China University the School of Information Engineering Guangdong University of Technology

For the reliability and power consumption issues of Ethernet data transmission based on the field programmable gate array （FPGA）, a low-power consumption design method is proposed, which is suitable for FPGA implementation. To reduce the dynamic power consumption of integrated circuit （IC） design, the proposed method adopts the dynamic control of the clock frequency. For most of the time, when the port is in the idle state or lower-rate state, users can reduce or even turn off the reading clock frequency and reduce the clock flip frequency in order to reduce the dynamic power consumption. When the receiving rate is high, the reading clock frequency will be improved timely to ensure that no data will lost. Simulated and verified by Modelsim, the proposed method can dynamically control the clock frequency, including the dynamic switching of high-speed and low-speed clock flip rates, or stop of the clock flip.

关键词： Clock frequency Ethernet fieldprogrammable gate array low-power consumption.

Continuous hemofiltration combined with norepinephrine in the treatment of septic shock

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Food Therapy and Health Care 2021年第2期3卷 31-35页

作者： jia-feng chen Dong-Liang Hao Rong-Chang Huo Qiang Fu Qing-Hai Zhang Intensive care unit Changle People's hospitalWeifang 262400ShandongChina Intensive care unit Weifang People's hospitalWeifang 261000ShandongChina

Objective:To observe the effect of continuous hemofiltration combined with norepinephrine in the treatment of septic shock,and to explore the value of blood purification in the treatment of septic ***:From November 2018 to December 2020,100 patients with septic shock in the Intensive care unit of our hospital were selected and randomly divided into observation group and control group,with 50 cases in each *** control group was given conventional treatment,while the observation group was given continuous hemofiltration combined with norepinephrine *** clinical efficacy,Scv02,MAP and oxygenation index(PO_(2)/FiO_(2))of the two groups were *** levels of interleukin-6(IL-6),procalcitonin(PCT)and the total number of leukocytes and other inflammatory factors were compared 72 hours after treatment,and the 28-day mortality of the two groups was ***:The total effective rate of the observation group(92.00%)was significantly higher than that of the control group(86.00%),the difference was statistically significant(p0.05);After 48 hours of treatment,the levels of Scv02,MAP and PO_(2)/FiO_(2)in the two groups were significantly increased,while the levels of scv02,map,PO_(2)/FiO_(2)in the observation group were more significantly increased than those in the control group(p<0.05);Before treatment,the levels of IL-6,PCT and total white blood cells in the two groups were significantly higher than those of post-therapy(p<0.05)After 72 hours of treatment,the levels of IL-6,PCT and the total number of white blood cells in the two groups decreased significantly,while the levels o

关键词： Sepsis Shock Continuous hemofiltration Norepinephrine Inflammation

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体力活动和力量训练对血压的影响

天津体育学院学报 1999年第4期14卷 31-33页

作者：冯红陈家琦天津体育学院·社会体育系

采用文献资料法,探讨了体力活动和力量训练对血压的影响,指出身体活动水平的低下与发展高血压的高危险性密切相关,力量训练对休息状态的舒张压有一定的降低作用。

关键词：运动力量训练高血压血压