检索结果-南通市图书馆

Lumbar disc rehydration in the bridged segment using the BioFlex dynamic stabilization system: A case report and literature review

引用

World Journal of Clinical Cases 2020年第10期8卷 1958-1965页

作者： Yong-Chao Li xiao-Fei Feng xiao-dong pang Jun Tan Bao-Gan Peng Department of Spinal Surgery The Third Medical Center of PLA General HospitalBeijing 100039China Department of Spinal Surgery Shanghai East HospitalTongji University School of MedicineShanghai 200120China Department of Orthopedics Pinghu Second People’s HospitalPinghu 314201Zhejiang ProvinceChina

BACKGROUND In recent years,the mechanical concept of intervertebral disc regeneration has become more and more popular due to the increasing awareness of the importance of preservation of spine ***,there is increasing evidence,however,that dynamic stabilization systems may compensate nonphysiological loads,limit pathological movement,normalize disc height and intradiscal pressure,and provide an adaptive environment for disc *** SUMMARY The patient was a 54-year-old man,who presented with a 10-year history of mechanical back pain,which had become progressively serious and radiated into the left lower limb with numbness 3 mo *** had decreased muscle strength(class IV)of the left dorsal extensor and plantar *** resonance imaging scans showed L3-S1 disc degeneration and L4-L5 disc *** the patient did not respond to various conservative treatments,he underwent a posterior L4-5 discectomy with fixation of the BioFlex dynamic stabilization system(Bio-Spine,Seoul,Korea).Preoperative symptoms were relieved and lumbar function was markedly improved after the operation.L4-L5 disc rehydration of instrumented segment was noted on magnetic resonance imaging at the 2-year *** Rehydration of the degenerated disc in our patient indicates that the BioFlex dynamic stabilization system may promote disc *** research is needed to provide more evidence to support lumbar disc rehydration in the bridged segment using this system.

关键词： Disc regeneration Dynamic stabilization system Degenerative disc disease Magnetic resonance imaging BioFlex Case report

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Enhancement of bending toughness for Fe-based amorphous nanocrystalline alloy with deep cryogenic-cycling treatment

引用

China Foundry 2025年第1期22卷 99-107页

作者： Yi-ran Zhang dong Yang Qing-chun Xiang Hong-yu Liu Jing pang Ying-lei Ren xiao-yu Li Ke-qiang Qiu School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China Qingdao Yunlu Advanced Material Technology Co. Ltd.Qingdao 266232ShandongChina

The effects of deep cryogenic-cycling treatment(DCT)on the mechanical properties,soft magnetic properties,and atomic scale structure of the Fe_(73.5)Si_(13.5)B_(9)Nb_(3)Cu_(1)amorphous nanocrystalline alloy were *** DCT samples were obtained by subjecting the as-annealed samples to a thermal cycling process between the temperature of the supercooled liquid zone and the temperature of liquid *** flat plate bending testing,hardness measurements,and nanoindentation experiment,it is found that the bending toughness of the DCT samples is improved and the soft magnetic properties are also slightly *** are attributed to the rejuvenation behavior of the DCT samples,which demonstrate a higher enthalpy of ***,DCT is an effective method to enhance the bending toughness of Fe-based amorphous nanocrystalline alloys without degrading the soft magnetic properties.

关键词： deep cryogenic-cycling treatment Fe-based amorphous nanocrystalline alloy bending toughness rejuvenation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Overview of in-situ oxygen production technologies for lunar resources

引用

International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 233-255页

作者： Youpeng Xu Sheng pang Liangwei Cong Guoyu Qian dong Wang Laishi Li Yusheng Wu Zhi Wang College of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China CAS Key Laboratory of Green Process and Engineering National Engineering Research Center for Green Recycling of Strategic Metal ResourcesInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial ***,crucial for supporting human life on the Moon,can be extracted from lunar regolith,which is highly rich in oxygen and contains polymetallic *** oxygen and metal extraction can be achieved using existing metallurgical ***,the ample reserves of water ice on the Moon offer another means for oxygen *** paper offers a detailed overview of the leading technologies for achieving oxygen production on the Moon,drawing from an analysis of lunar resources and environmental *** delves into the principles,processes,advantages,and drawbacks of water-ice electrolysis,two-step oxygen production from lunar regolith,and one-step oxygen production from lunar *** two-step methods involve hydrogen reduction,carbothermal reduction,and hydrometallurgy,while the one-step methods encompass fluorination/chlorination,high-temperature decomposition,molten salt electrolysis,and molten regolith electrolysis(MOE).Following a thorough comparison of raw materials,equipment,technology,and economic viability,MOE is identified as the most promising approach for future in-situ oxygen production on the *** the corrosion characteristics of molten lunar regolith at high temperatures,along with the Moon's low-gravity environment,the development of inexpensive and stable inert anodes and electrolysis devices that can easily collect oxygen is critical for promoting MOE technology on the *** review significantly contributes to our understanding of in-situ oxygen production technologies on the Moon and supports upcoming lunar exploration initiatives.

关键词： lunar resources in-situ oxygen production space metallurgy molten lunar regolith electrolysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Cross-section design of the flow channels in membrane electrode assembly electrolyzer for CO_(2) reduction reaction through numerical simulations

引用

Chinese Chemical Letters 2025年第1期36卷 332-337页

作者： Lili Zhang Hui Gao Gong Zhang Yuning dong Kai Huang Zifan pang Tuo Wang Chunlei Pei Peng Zhang Jinlong Gong Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China National Industry-Education Platform of Energy Storage Tianjin UniversityTianjin 300350China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou 350207China

Membrane electrode assembly(MEA)is widely considered to be the most promising type of electrolyzer for the practical application of electrochemical CO_(2) reduction reaction(CO_(2)RR).In MEAs,a square-shaped cross-section in the flow channel is normally adopted,the configuration optimization of which could potentially enhance the performance of the *** paper describes the numerical simulation study on the impact of the flow-channel cross-section shapes in the MEA electrolyzer for CO_(2)*** results show that wide flow channels with low heights are beneficial to the CO_(2)RR by providing a uniform flow field of CO_(2),especially at high current ***,the larger the electrolyzer,the more significant the effect *** study provides a theoretical basis for the design of high-performance MEA electrolyzers for CO_(2)RR.

关键词： Electrochemical reduction of CO_(2) Membrane electrode assembly Mass transfer Gas diffusion electrode Computational fluid dynamics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Toxicity variability in Alexandrium pacificum isolated from East China Sea:impact of temperature and light intensity

引用

Journal of Oceanology and Limnology 2025年第1期43卷 147-158页

作者： Xuexia ZHU Tianchi YIN Min pang Jun WANG The First Institute of Oceanography Ministry of Natural Resources of the People’s Republic of ChinaQingdao 266061China College of Animal Science and Technology Yangzhou UniversityYangzhou 225009China College of Oceanography Hohai UniversityNanjing 210098China

Suitable temperature and light intensity play important roles in the formation of harmful algae blooms(HABs),which can pose serious threats to aquatic ecosystems and human *** this study,we measured the growth,physiological function,and paralytic shellfish toxins(PSTs)production of Alexandrium pacificum(CCMA-272),a strain isolated from East China Sea,at different temperatures(15,20,and 25℃)and light intensities(30,60,and 90μmol photons/(m^(2)·s)).Results indicate that temperature and light intensity significantly affected the growth,physiology,and toxigenic potentials of *** optimal conditions for the growth of *** were observed at 20℃ under60μmol photons/(m^(2)·s).Regarding the production of PSTs,this strain of *** produced 12 PSTs,including carbamate toxins:saxitoxin(STX),neosaxitoxin(NEO),and gonyautoxin 1–4(GTX1,GTX2,GTX3,GTX4);dicarbamoyl toxins:dicarbamoylsaxitoxin(dcSTX),dicarbamoylgonyautoxin 2,3(dcGTX2,dcGTX3);and N-sulfocarbamoyl toxins:N-sulfocarbamoylgonyautoxin 1,2(C1,C2),and gonyautoxin 5(GTX5).Among all the PSTs,C2 was the most *** temperature(15℃)and high light intensity(90μmol photons/(m^(2)·s))were beneficial for the production of PSTs in *** cultured at 20 and 25℃,*** generated comparable total quantities of PSTs,yet the toxicity levels were lower at 25℃.Intra-cellular PSTs contents were greater than extra-cellular PSTs contents,except those under the condition of 25℃ with 30μmol photons/(m^(2)·s).However,as the increase of temperature,*** released more amounts of analogues with higher toxicity levels(e.g.,STX and dcGTX_(2))into the environment than *** findings emphasize the significant sensitivity of *** to temperature and light intensity,highlighting the importance of evaluating both intra-cellular and extra-cellular PSTs for assessing its toxicity and aiding in the prediction and management of HABs.

关键词： temperature light intensity Alexandrium pacificum paralytic shellfish toxin harmful algal bloom

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Predictor−corrector inverse design scheme for property−composition prediction of amorphous alloys

引用

中国有色金属学报 2025年第1期35卷 169-183页

作者： Tao LONG Zhi-lin LONG Bo pang School of Mechanical Engineering and Mechanics Xiangtan UniversityXiangtan 411105China School of Civil Engineering Xiangtan UniversityXiangtan 411105China

In order to develop a generic framework capable of designing novel amorphous alloys with selected target properties,a predictor−corrector inverse design scheme(PCIDS)consisting of a predictor module and a corrector module was presented.A high-precision forward prediction model based on deep neural networks was developed to implement these two *** utmost importance,domain knowledge-guided inverse design networks(DKIDNs)and regular inverse design networks(RIDNs)were also *** forward prediction model possesses a coefficient of determination(R^(2))of 0.990 for the shear modulus and 0.986 for the bulk modulus on the testing ***,the DKIDNs model exhibits superior performance compared to the RIDNs *** is finally demonstrated that PCIDS can efficiently predict amorphous alloy compositions with the required target properties.

关键词： amorphous alloys machine learning deep neural networks inverse design elastic modulus

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Unilamellar MnO_(2)nanosheets confined Ru-clusters combined with pulse electrocatalysis for biomass electrooxidation in neutral electrolytes

引用

Science Bulletin 2025年第2期70卷 193-202页

作者： Yuanqing He Chongyang Ma Shiheng Mo Chung-Li dong Wei Chen Shuo Chen Huan pang Renzhi Ma Shuangyin Wang Yuqin Zou School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225009China State Key Laboratory of Chem/Bio-Sensing and Chemometrics Advanced Catalytic Engineering Research Center of the Ministry of EducationCollege of Chemistry and Chemical EngineeringThe National Supercomputer Centers in ChangshaHunan UniversityChangsha 410082China Department of Physics Tamkang UniversityNew Taipei City 25137China School of Materials Science and Engineering Central South UniversityChangsha 410083China International Research Center for Materials Nanoarchitectonics(WPI-MANA) National Institute for Materials Science(NIMS)TsukubaIbaraki 305-0044Japan

The electrochemical oxidation of 5-hydroxymethylfurfural(HMFOR)in alkaline electrolyte is a promising strategy for producing high-value chemicals from biomass ***,the disproportionation of aldehyde groups under strong alkaline conditions and the polymerization of HMF to form humic substances can impact the purity of 2,5-furandicarboxylic acid(FDCA)*** use of neutral electrolytes offers an alternative environment for electrolysis,but the lack of OH^(-)ions in the electrolyte often leads to low current density and low yields of *** this study,a sandwich-structured catalyst,consisting of Ru clusters confined between unilamellar MnO_(2)nanosheets(S-Ru/MnO_(2)),was used in conjunction with an electrochemical pulse method to realize the electrochemical conversion of5-hydroxymethylfurfural into FDCA in neutral *** electrolysis and the strong electron transfer between Ru clusters and MnO_(2)nanosheets help maintain Ru in a low oxidation state,ensuring high *** increased*OH generation led to a groundbreaking current density of 47 mA/cm^(2)at1.55 V *** hydrogen electrode(RHE)and an outstanding yield rate of 98.7%for FDCA in a neutral *** work provides a strategy that combines electrocatalyst design with an electrolysis technique to achieve remarkable performance in neutral HMFOR.?2024 Science China *** by Elsevier *** Science China *** rights are reserved,including those for text and data mining,AI training,and similar technologies.

关键词： Electrocatalytic 5-hydroxymethylfurfural oxidation Neutral electrolyte Electrocatalysts Nano-confined structure Electrochemical pulse

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research progress of small-molecule natural medicines for the treatment of ischemic stroke

引用

Chinese Journal of Natural Medicines 2025年第1期23卷 21-30页

作者： Kui Liu Ling Wang Tao pang State Key Laboratory of Natural Medicines New Drug Screening and Pharmacodynamics Evaluation Center China Pharmaceutical University

Stroke is the second leading cause of disability and mortality worldwide, imposing a substantial socioeconomic burden on individuals and healthcare systems. Annually, approximately 14 million people experience stroke, with ischemic stroke comprising nearly 85% of cases, of which 10% to 20% involve large vessel occlusions. Currently, recombinant tissue plasminogen activator(tPA) remains the only approved pharmacological intervention. However, its utility is limited due to a narrow therapeutic window and low recanalization rates, making it applicable to only a minority of patients. Therefore, there is an urgent need for novel therapeutic strategies, including pharmacological advancements and combinatory ***-molecule natural medicines, particularly those derived from traditional Chinese herbs,have demonstrated significant therapeutic potential in ischemic stroke management. These compounds exert multiple neuroprotective effects, such as antioxidation, anti-inflammatory action, and inhibition of apoptosis, all of which are critical in mitigating stroke-induced cerebral damage. This review comprehensively examines the pathophysiology of acute ischemic stroke(AIS) and highlights the recent progress in the development of small-molecule natural medicines as promising therapeutic agents for cerebral ischemic stroke.

关键词： Antioxidants Ischemic stroke Natural medicines Neuroinflammation. Small molecule

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Response properties of geometries of coal penetrating fracture on seepage behavior

引用

International Journal of Mining Science and Technology 2025年第2期35卷 191-211页

作者： Han, Penghua Wang, Kai pang, Jiewen Ji, xiaofeng Zhang, Cun College of Engineering for Safety and Emergency Management Taiyuan University of Science and Technology Taiyuan030024 China School of Energy and Mining Engineering China University of Mining and Technology - Beijing Beijing100083 China Engineering Research Center of Green and Intelligent Mining for Thick Coal Seam Ministry of Education China University of Mining and Technology-Beijing Beijing100083 China

The fracture surfaces of coal-rock masses formed under mining-induced stress generally exhibit complex geometries, and the fracture geometry is one of the primary factors affecting the seepage characteristics of coal-rock penetrating fracture. This paper investigates the seepage characteristics of 5 groups of coal penetrating fracture (CPF) with different joint roughness coefficients (JRCs). Based on 3D morphology scanner tests and hydraulic coupling tests, a characterization method of effective geometric parameters in fracture surfaces under various confining pressures was improved, and a relationship between effective geometric parameters and the confining pressure is established. The results indicate that the nonlinear flow behavior in a CPF primarily includes three types: non-Newtonian fluid seepage under high confining pressure and low JRC, non-Darcy seepage under low confining pressure and high JRC, and the whole process of seepage characteristics between these two conditions. Among them, non-Newtonian fluid seepage is caused by significant fracture expansion, while non-Darcy seepage can be attributed to turbulence effects. During the seepage process, the geometric parameters with different JRC fracture samples all exhibit exponential changes with the increase of confining pressure. In addition, under high confining pressure, the effective contact ratio, effective fracture aperture, and void deviation ratio with high JRC fracture samples under high confining pressure increase by 93.5%, 67.4%, and 24.9%, respectively, compared with those of low JRC fracture samples. According to the variation of geometric parameters in a CPF with external stress, a seepage model considering geometric parameters in a CPF is proposed. By introducing the root mean square error (RMSE) and coefficient of determination (R2) to evaluate the error and goodness of fit between model curves and experimental data, it is found that the theoretical curves of model in this paper have the best

关键词： Non Newtonian flow

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

激光技术在食品3D打印中的应用及发展趋势

引用

食品科学 2025年第1期46卷 315-321页

作者：童强肖帅磊姜宇董秀萍庞桂兵大连工业大学机械工程与自动化学院辽宁大连116034 海洋食品加工与安全控制全国重点实验室国家海洋食品工程技术研究中心辽宁省海产品精深加工产业共性技术创新平台大连市中式预制食品技术创新中心辽宁大连116034 大连工业大学食品交叉科学研究院辽宁大连116034

随着食品3D打印技术的快速发展,各种辅助技术与其结合的创新应用越来越受关注。激光技术具有精确、高能量和快速实现材料成型等特点,与食品3D打印技术的个性化定制优势高度契合,两者的结合在食品加工领域展现出巨大的应用前景。本文在... 详细信息

随着食品3D打印技术的快速发展,各种辅助技术与其结合的创新应用越来越受关注。激光技术具有精确、高能量和快速实现材料成型等特点,与食品3D打印技术的个性化定制优势高度契合,两者的结合在食品加工领域展现出巨大的应用前景。本文在介绍食品3D打印技术和激光技术发展现状的基础上,着重阐述激光技术在食品3D打印中的应用,包括激光参数(如波长、功率、脉冲等)和工艺优势。同时,指出激光技术在食品3D打印应用中所面临的挑战,如激光照射下的食品安全、应用局限等问题。最后,对激光技术和食品3D打印技术深度融合的发展趋势进行总结与展望,指明未来发展方向,为激光技术在食品3D打印领域的创新应用提供理论参考。

关键词：食品3D打印增材制造激光技术食品加工

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：