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Mechanical and damping performances of TPMS lattice metamaterials fabricated by laser powder bed fusion

China Foundry 2024年第4期21卷 327-333页

作者： yan-peng Wei Huai-qian Li Jing-jing Han Ying-chun Ma Hao-ran Zhou Jing-chang Cheng Jian Shi Zhi-quan Miao Bo Yu Feng Lin National Key Laboratory of Advanced Casting Technologies Shenyang Research Institute of Foundry Co.Ltd.CAMShenyang 110022China Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China Key Laboratory of Space Physics Beijing 100076China

Lattice metamaterials based on three-period minimum surface(TPMS)are an effective means to achieve lightweight and high-strength materials which are widely used in various fields such as aerospace and ***,its vibration and noise reduction,and damping properties have not been fully ***,in this study,the TPMS structures with parameterization were designed by the method of surface migration,and the TPMS structures with high forming quality was manufactured by laser powder bed fusion(LPBF).The mechanical properties and energy absorption characteristics of the beam and TPMS structures were studied and compared by quasi-static *** modal shapes of the beam lattice structures and TPMS structures were obtained by the free modal analysis,and the damping properties of two structures were obtained by modal *** the two structures after heat treatment with the same porosity of 70%,the yield strength of the beam lattice structure reaches 40.76 MPa,elastic modulus is 20.38 GPa,the energy absorption value is 32.23 MJ·m^(-3),the damping ratio is 0.52%.The yield strength,elastic modulus,energy absorption value,and damping ratio of the TPMS structure are 50.74 MPa,25.37 GPa,47.34 MJ·m^(-3),and 0.99%,*** results show that TPMS structures exhibit more excellent mechanical properties and energy absorption,better damping performance,and obvious advantages in structural load and vibration and noise reduction compared with the beam lattice structures under the same porosity.

关键词： lattice metamaterials TPMS energy absorption damping laser powder bed fusion

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Effect of ellagitannin metabolites ellagic acid and urolithins A-D on the non-enzymatic glycation of human serum albumin and inhibiting mechanisms

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Food Science and Human Wellness 2024年

作者： Lu Zhang Chun-yan peng Wen-na Zhou Fei-yan Lu Lin-ju Xu Qing-hui Wen Xing Xie Zong-cai Tu National R&D Center of Freshwater Fish Processing College of Life Science Jiangxi Normal University State Key Laboratory of Food Science and Resources Nanchang University

Effect of ellagitannins gut microbiota metabolites ellagic acid (EA) and urolithin A-urolithin D (UroA-UroD) on human serum albumin (HSA) glycation were firstly evaluated in this research. The inhibition mechanisms were investigated by methylglyoxal (MGO) trapping and radical scavenging ability assays， docking studies and Nano LC-Orbitrap-MS/MS technology. Results indicated that the inhibition of urolithins on HSA glycation was highly positive correlated with the number of phenolic hydroxy groups. Addition of UroD and EA could effectively enhance the content of free amino group， suppress dicarbonyl compounds and advanced glycation end-products (AGEs) formation， alleviated tryptophan and protein oxidation， inhibited HSA amyloid-like aggregation. They could also trap MGO and scavenge DPPH· and ABTS·+. Molecular docking indicated that EA and UroA-UroD interact with HSA mainly through hydrogen bound and hydrophobic interaction， among which two or three hydrogen bonds were formed. The number of glycation sites were reduced from 11 to 10， 10， 7， and 10， respectively， when 90 μmol/L of EA， UroA， UroC and UroD were added. However， weak inhibition was observed on UroA and UroB. These findings can provide scientific evidence for the application of ellagitannins-rich foods in alleviating diabetic complications.

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Treatment of anastomotic stricture after rectal cancer operation by magnetic compression technique:A case report

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World Journal of Gastrointestinal Surgery 2024年第5期16卷 1443-1448页

作者： Miao-Miao Zhang Huan-Chen Sha Hai-Rong Xue Yuan-Fa Qin Fang-Fang Dong Li Zhang Yi Lyu Xiao-peng yan Department of Hepatobiliary Surgery The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Shaanxi Provincial Key Laboratory of Magnetic Medicine The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Department of Gastroenterology The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina

BACKGROUNDThe treatment of postoperative anastomotic stenosis(AS)after resection of colorectalcancer is *** balloon dilation is used to treat stenosisin such cases,but some patients do not show improvement even after multipleballoon *** compression technique(MCT)has been used for gastrointestinalanastomosis,but its use for the treatment of postoperative AS aftercolorectal cancer surgery has rarely been *** SUMMARYWe report a 72-year-old man who underwent radical resection of colorectal cancerand ileostomy one year *** ileostomy closure was prepared six months ago,but colonoscopy revealed a narrowing of the rectal *** balloondilation was performed three times,but colonoscopy showed no significantimprovement in *** AS was successfully treated using *** is a minimally invasive method that can be used for the treatment of postoperativeAS after colorectal cancer surgery.

关键词： Rectostenosis Magnetic surgery Magnetic Surgery Clinic Rectal cancer Magnetic compression technique Case report

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战略性工业扩散:中国参与全球产业链重构的底线思维

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文化纵横 2024年第3期 50-60页

作者：严鹏华中师范大学中国近代史研究所中国工业文化研究中心

产业链转移与供应链重构是近年来全球性的焦点议题。从“离岸制造”到“友岸外包”,地缘政治的风云变幻重塑着全球经济地理的格局,而在所有的喧器背后,美国制造业的部门性衰退以及美国数届政府重振制造业的努力,是一种结构性的驱动力量。

关键词：工业扩散工业追赶重构全球化

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Comparative Evaluation of Antitumor Chinese Patent Medicine Injections Based on Evidence-Based Medicine and Markov Model

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World Journal of Traditional Chinese Medicine 2024年第2期10卷 220-229页

作者： Jing yang yan-peng Wang Wen-Gong Yu Yu-Yao Guan Prince Emmanuel Opoku Amponsah Xian-Shuai Tang Ying-Zi Sun Lei Zheng School of Medicine and Pharmacy Ocean University of ChinaQingdaoChina Department of Pharmacy Shandong Medical CollegeJinanChina Department of Pharmacy Cheeloo College of MedicineShandong Provincial Third HospitalShandong UniversityJinanChina Biomedical Engineering Graduate School University of ArizonaTucsonAZUSA

Objective: The objective of this study was to explore the safety, efficacy, economy, and other aspects of frequently-used antitumor Chinese patent medicine injections through a comprehensive evaluation of evidence-based medical research to provide scientific information and decision-making basis for drug selection, rational drug use, public awareness of safe drug use, and medical insurance. Materials and Methods: The names of five frequently used antitumor Chinese patent medicine injections were used as search terms, including the compound Sophora flavescens injection, Kangai injection, Aidi injection, Kanglaite injection, and Brucea javanica oil emulsion injection. Relevant evidence-based medical research was extracted from the databases. A descriptive evaluation was conducted, and the Markov model was used for the cost-benefit analysis. Finally, the above injections are ranked by comprehensive scores using the multi-criteria decision analysis and Delphi method. Results: The five injections had their own advantages in enhancing the effectiveness of anti-tumor treatments, improving the quality of life for cancer patients, and reducing the incidence of adverse reactions. From the perspective of economy and other attributes, compound S. flavescens was superior to B. javanica oil, Aidi, Kangai, and Kanglaite. After a comprehensive evaluation of the above five injections, the compound S. flavescens injection received the highest score. Conclusions: Compound S. flavescens, Kangai, Aidi, B. javanica oil, and Kanglaite have their own advantages in effectiveness and no significant difference in safety. Compound S. flavescens injection has the highest comprehensive score. Clinical attention should be paid to monitoring the initial stage of medication and special groups.

关键词： Anti-tumor Chinese patent medicine comprehensive evaluation medication safety pharmacoeconomics rational drug use

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Magnetic compression anastomosis to restore biliary tract continuity after obstruction following major abdominal trauma:A case report

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1933-1938页

作者： Miao-Miao Zhang Jie Tao Huan-Chen Sha Yun Li Xiao-Gang Song Oliver J Muensterer Fang-Fang Dong Li Zhang Yi Lyu Xiao-peng yan Department of Hepatobiliary Surgery The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina Shaanxi Provincial Key Laboratory of Magnetic Medicine The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina National Local Joint Engineering Research Center for Precision Surgery&Regenerative Medicine The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina Department of Pediatric Surgery Dr.von Hauner Children’s HospitalLudwig-Maximilians-University Medical CenterMunich 80337Germany

BACKGROUND The combination of magnetic compression anastomosis(MCA)and endoscopy has been used to treat biliary stricture after liver ***,its use for the treatment of complex biliary obstruction after major abdominal trauma has not been *** case report describes the successful use of MCA for the treatment of biliary obstruction resulting from major abdominal trauma.A 23-year-old man underwent major abdominal surgery(repair of liver rupture,right half colon resection,and ileostomy)following a car accident one year *** abdominal drainage tube,positioned at the Winslow foramen,was draining approximately 600-800 mL of bile per *** the two endoscopic retrograde cholangiopancreatography procedures,the guide wire was unable to enter the common bile duct,which prevented placement of a biliary *** combined with endoscopy was used to successfully achieve magnetic anastomosis of the peritoneal sinus tract and duodenum,and then a choledochoduodenal stent was ***,the external biliary drainage tube was *** patient achieved internal biliary drainage leading to the removal of the external biliary drainage tube,which improved the quality of *** Magnetic compression technique can be used for the treatment of complex biliary obstruction with minimal operative trauma.

关键词： Magnetic compression anastomosis Magnetosurgery Endoscopy Magnetic Surgery Clinic Biliary obstruction Case report

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Clinical feasibility of laparoscopic left lateral segment liver resection with magnetic anchor technique:The first clinical study from China

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World Journal of Gastrointestinal Surgery 2024年第5期16卷 1336-1343页

作者： Miao-Miao Zhang Ji-Gang Bai Dong Zhang Jie Tao Zhi-Min Geng Zhuo-Qun Li Yu-Xiang Ren Yu-HanZhang Yi Lyu Xiao-peng yan Department of Hepatobiliary Surgery The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Shaanxi Provincial Key Laboratory of Magnetic Medicine The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Zonglian College Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Qide College Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina

BACKGROUND Magnetic anchor technique(MAT)has been applied in laparoscopic cholecystectomy and laparoscopic appendectomy,but has not been reported in laparoscopic partial *** To evaluate the feasibility of the MAT in laparoscopic left lateral segment liver *** Retrospective analysis was conducted on the clinical data of eight patients who underwent laparoscopic left lateral segment liver resection assisted by MAT in our department from July 2020 to November *** Y-Z magnetic anchor devices(Y-Z MADs)was independently designed and developed by the author of this paper,which consists of the anchor magnet and magnetic grasping *** time,intraoperative blood loss,intraoperative accidents,operator experience,postoperative incision pain score,postoperative complications,and other indicators were evaluated and *** All eight patients underwent a MAT-assisted laparoscopic left lateral segment liver resection,including three patients undertaking conventional 5-port and five patients having a transumbilical single-port *** mean operation time was 138±34.32 min(range 95-185 min)and the mean intraoperative blood loss was 123±88.60 mL(range 20-300 mL).No adverse events occurred during the *** Y-Z MADs showed good workability and maneuverability in both tissue and organ *** particular,the operators did not experience either a“chopstick”or“sword-fight”effect in the single-port laparoscopic *** The results show that the MAT is safe and feasible for laparoscopic left lateral segment liver resection,especially,exhibits its unique abettance for transumbilical single-port laparoscopic left lateral segment liver resection.

关键词： Magnetosurgery/magnetic surgery Magnetic anchor technique Laparoscopic hepatectomy Transumbilical singleport laparoscopy Magnet

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秦“道”制起源新论

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西北师大学报（社会科学版） 2024年第1期61卷 66-76页

作者：胡小鹏杨彦鹏西北师范大学历史文化学院甘肃兰州730070

战国时期,秦国在统一进程中,根据被征服地区的顺逆程度,对新征服的非秦族群地区采取置郡县直辖和设立附属臣邦两种模式。秦属臣邦在保留原有“王侯君长”的同时,设置官员进行监督导化,秦“道”制即起源于臣邦中的“道官”系统,并在臣邦... 详细信息

战国时期,秦国在统一进程中,根据被征服地区的顺逆程度,对新征服的非秦族群地区采取置郡县直辖和设立附属臣邦两种模式。秦属臣邦在保留原有“王侯君长”的同时,设置官员进行监督导化,秦“道”制即起源于臣邦中的“道官”系统,并在臣邦秦制化的过程中得到完善,发展为管理非华夏族群地区的与县平级的地方行政机构。从秦简文与封泥材料看,“道”即“導”,“道”制本意就是导化蛮夷,与交通道路无关。臣邦与“道”的主官为“丞”,意为辅佐,隐含“導”义,与县、都官主官称呼有别。

关键词：秦国秦王朝臣邦 “道”制丞

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Unveiling of Terahertz Emission from Ultrafast Demagnetization and the Anomalous Hall Effect in a Single Ferromagnetic Film

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Chinese Physics Letters 2024年第4期41卷 45-50页

作者：蓝志强李章顺徐浩然刘凡金钻明彭滟朱亦鸣 Terahertz Technology Innovation Research Institute Terahertz Spectrum and Imaging Technology Cooperative Innovation CenterShanghai Key Lab of Modern Optical SystemUniversity of Shanghai for Science and TechnologyShanghai 200093China

Using THz emission spectroscopy,we investigate the elementary spin dynamics in ferromagnetic single-layer Fe on a sub-picosecond *** demonstrate that THz radiation changes its polarity with reversal of the magnetization applied by the external magnetic *** addition,it is found that the sign of THz polarity excited from different sides is defined by the thickness of the Fe layer and Fe/dielectric *** on the thickness and symmetry dependences of THz emission,we experimentally distinguish between the two major contributions:ultrafast demagnetization and the anomalous Hall *** experimental results not only enrich understanding of THz electromagnetic generation induced by femtosecond laser pulses but also provide a practical way to access laser-induced ultrafast spin dynamics in magnetic structures.

关键词： magnetic magnetization polarity

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贵州蜡染文化产业数字化发展策略研究

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贵州民族研究 2024年第1期45卷 158-164页

作者：彭验雅贵州师范大学贵州贵阳550001

贵州蜡染文化产业的发展具有政策与技术的环境优势,但仍然存在蜡染技艺传承力度不够、产品审美陈旧、品牌建立与推广方式同数字化平台脱节的问题。文章旨在探讨贵州蜡染文化产业数字化发展的策略研究,通过对贵州蜡染产业的现状进行分析... 详细信息

贵州蜡染文化产业的发展具有政策与技术的环境优势,但仍然存在蜡染技艺传承力度不够、产品审美陈旧、品牌建立与推广方式同数字化平台脱节的问题。文章旨在探讨贵州蜡染文化产业数字化发展的策略研究,通过对贵州蜡染产业的现状进行分析,提出了数字化转型对贵州蜡染文化传承、产品创新、市场拓展和品牌建设等方面的积极推动作用。针对当前数字化发展面临的问题和挑战,文章选取数字博物馆、蜡染传承人数字化培训、蜡染数字艺术文创、互联网媒体平台推广等四个方面作为现代化、信息化开拓新途径,以促进贵州蜡染文化产业数字化发展,为贵州蜡染生产企业和文化机构提供借鉴和启示。

关键词：贵州蜡染文化产业数字化

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