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Robotic-assisted surgery for pediatric choledochal cyst: Case report and literature review

World Journal of Clinical Cases 2018年第7期6卷 143-149页

作者： Xian-qiang Wang Shu-Juan Xu Zheng Wang Yuan-Hong xiao Jing Xu Zhen-Dong Wang Di-Xiang chen Department of Pediatrics PLA General Hospital Center of Anesthesia and Operation PLA General Hospital

Our paper describes the key surgical points of pediatric choledochocystectomy performed completely by Da Vinci robotic system. A choledochocystectomy was safely carried out for a girl at our hospital, and without any complication. Then systematic literature review was done to discuss the methods of intestine surgery and intestinal anastomosis, the use of 3 rd robotic arm, the surgical safety and advantages comparing open and laparoscopic surgery. We systematically reviewed choledochocystectomy for children performed by robotic surgery. We included a total of eight domestic and foreign reports and included a total of 86 patients, whose average age was 6.3(0.3-15.9) years; the maleto-female ratio was 1:3.5(19:67). Seven patients experienced conversion to open surgery, and the surgery success rate was 91.9%(79/86). The average total operation time was 426(180-520) min, the operation time on the machine was 302(120-418) min, 11 cases used the number 3 arm, and the remaining mainly used the hitch-stitch technique to suspend the stomach wall and liver. Forty-seven patients underwent pull-through intestine and intestinal anastomosis, and 39 patients underwent complete robotic intestine surgery and intestinal anastomosis. The hospitalization time of roboticassisted choledochocystectomy was 8.8 d. Eight patientshad biliary fistula and were all cured by conservative treatment and continuous observation. One patient had anastomotic stenosis, and one patient had wound dehiscence, both cured by surgery. Choledochocystectomy for children performed by completely robotic surgery and Roux-en-Y hepaticojejunostomy is safe and feasible. The initial experience shows that this surgical approach has a clearer field than the traditional endoscopy, and its operation is more flexible, the surgery is more accurate, and the injury is smaller. With the advancement of technology and the accumulation of surgeons' experience, robotic surgery may become a new trend in this surgical procedure.

关键词： Choledochocystectomy Robotic surgery Pediatrics Congenital choledochal cysts

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Accelerated spread of Fukushima’s waste water by ocean circulation

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The Innovation 2021年第2期2卷 3-4页

作者： Gengxin chen qiang Wang xiaoqing Chu State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China

Japan announced that the treated waste water contaminated by the wrecked Fukushima Daiichi Nuclear Power Plant will be released to the Pacific *** the waste water still contains tritium and trace amounts of other radionuclides,the decision immediately raises many general concerns for people,especially residents of neighboring countries,and has been condemned by environmental groups and fisheries organizations.

关键词： neighboring ocean circulation

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连接器常见对配问题分类分析

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汽车电器 2024年第4期 54-55,60页

作者：王奇李强陈磊刘中跃河南天海电器有限公司河南鹤壁458030

汽车连接器作为主导汽车线束电流和信号传输的纽带,连接器间的传输可靠性直接决定电流和信号的传输效果。文章从影响连接器对配的因素入手,分类介绍不同因素对连接器对配的影响,为连接器设计和选型提供参考。

关键词：对配人机工程结合力连接器

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考虑化学反应的高聚物压密劈裂注浆仿真研究

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岩土力学 2024年第9期45卷 2823-2838页

作者：李晓龙赵泽鑫陈坤洋马鹏陈灿钟燕辉张蓓郑州大学水利与交通学院河南郑州450001 郑州大学重大基础设施检测修复技术国家地方联合工程实验室河南郑州450001 河南省陆浑水库管理局河南洛阳471032

考虑浆液化学反应原理,综合运用扩展有限元理论、修正剑桥模型和高聚物浆液膨胀力计算模型,建立了模拟高聚物在土体中压密劈裂注浆动态过程的二维仿真分析方法。通过模型试验验证了所提出方法的适用性,进而分析了浆液膨胀力、浆脉形态... 详细信息

考虑浆液化学反应原理,综合运用扩展有限元理论、修正剑桥模型和高聚物浆液膨胀力计算模型,建立了模拟高聚物在土体中压密劈裂注浆动态过程的二维仿真分析方法。通过模型试验验证了所提出方法的适用性,进而分析了浆液膨胀力、浆脉形态、土体孔隙比随时间变化规律及注浆孔埋深、土体断裂韧度对浆脉扩展过程的影响。结果表明:受高聚物化学反应进程驱动,在浆液与土体耦合作用下,浆液膨胀力初期随时间近似呈线性增长,达到峰值后快速下降并趋于稳定;浆脉长度和宽度发展速度不同步,裂缝启裂至二次扩展阶段,浆脉长度基本保持不变,宽度线性增大,裂缝二次扩展后,浆脉长度近似线性增大,而宽度增长速率趋缓;受浆液挤密作用影响,裂缝两侧一定范围内土体孔隙比显著降低,沿垂直于裂缝面方向,距注浆孔中心越近,孔隙比越小;孔隙比随时间整体呈下降趋势,随着裂缝的扩展和后期膨胀压力的下降,紧邻裂缝面两侧土体孔隙比有一定恢复,随后趋于稳定;随着注浆孔埋深和土体断裂韧度的增加,浆脉长度逐渐减小,宽度不断增大,两者变化速率基本保持不变;浆脉扩展稳定时间随埋深的增大而提前,随断裂韧度的增大而延后。

关键词：高聚物劈裂注浆仿真方法化学反应膨胀力计算模型扩展有限元修正剑桥模型

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Undrained shear strength evaluation for hydrate-bearing sediment overlying strata in the Shenhu area, northern South China Sea

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Acta Oceanologica Sinica 2019年第3期38卷 114-123页

作者： Yanlong Li Gaowei Hu Nengyou Wu Changling Liu qiang chen chen'an Li Key Laboratory of Gas Hydrate Ministry of Natural Resources Laboratory for Marine Mineral Resource Pilot National Laboratory for Marine Science and Technology (Qingdao) Qingdao Institute of Marine Geology China Geological Survey College of Information and Control Engineering China University of Petroleum

The undrained shear strength of shallow strata is a critical parameter for safety design in deep-water *** situ piezocone penetration tests(CPTU) and laboratory experiments are performed at Site W18-19 in the Shenhu area, northern South China Sea, where China's first marine hydrate exploitation operation is due to be located. The validation of the undrained shear strength prediction model based on CPTU parameters. Different laboratory tests, including pocket penetrometer, torvane, miniature vane and unconsolidated undrained triaxial tests, are employed to solve empirical cone coefficients by statistical and mathematical methods. Finally, an optimized model is proposed to describe the longitudinal distribution of undrained shear strength in calcareous clay strata in the Shenhu area. Research results reveal that average empirical cone coefficients based on total cone resistance, effective resistance, and excess-pore pressure are 13.8, 4.2 and 14.4, respectively. The undrained shear strength prediction model shows a good fit with the laboratory results only within specific intervals based on their compaction degree and gas-bearing conditions. The optimized prediction model in piecewise function format can be used to describe the longitudinal distribution of the undrained shear strength for calcareous clay within all depth intervals from the mud-line to the upper boundary of hydrate-bearing sediments(HBS). The optimized prediction result indicates that the effective cone resistance model is suitable for very soft to firm calcareous clays,the excess-pore pressure model can depict the undrained shear strength for firm to very stiff but gas-free clays,while the total cone resistance model is advantageous for evaluating the undrained shear strength for very stiff and gassy clays. The optimized model in piecewise function format can considerably improve the adaptability of empirical models for calcareous clay in the Shenhu area. These results are significant for sa

关键词： piezocone penetration test hydrate exploitation test undrained shear strength calcareous clay Shenhu area South China Sea

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电针通过调控ILC2功能和白色脂肪棕色化治疗肥胖大鼠的作用机制

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World Journal of Acupuncture-Moxibustion 2024年第2期34卷 138-146页

作者：陈剑坤吴苑李文珍黄梦芬黄彬谢长才李际强卢月陈裕中医湿证国家重点实验室广州中医药大学第二附属医院广州511400 广州中医药大学第二临床医学院广州511400 广州中医药大学针灸康复临床医学院广州511400 广州中医药大学广州511400

Objective:To observe the effects of electroacupuncture(EA)on type 2 innate lymphoid cell(ILC2)function in white adipose tissue(WAT)of high-fat diet(HFD)-induced obese rats to reveal the mechanism underlying weight ***:Male Winstar rats(n=15)were randomly divided into control,HFD,and HFD+EA groups,with five rats in each *** obesity model was established by feeding rats with a ***(2 Hz,1 mA)was applied to"Zhongwan(CV12)"bilateral"Tianshu(ST25)""Zusanli(ST36)"and"Sanyinjiao(SP6)"for15 min,7 days a week,for a total of 5 *** EA treatment,the HFD group was fed a HFD,whereas rats in the control group were maintained on a normal *** was no intervention in either the control or the HFD *** weight was measured ***-field adipocyte morphology,adipocyte volume,and the number of abdominal WAT were observed under a microscope after sectioning and hematoxylin and eosin *** levels of IL-5(interleukin-5),IL-13(interleukin-13),IL-33(interleukin-33),and ST2(growth stimulating gene 2 protein)in the WAT were assayed using enzymelinked immunosorbent assay and reverse transcription-polymerase chain reaction(RT-PCR).The expression levels of browning markers including PGClα(peroxisome proliferator-activated receptor gamma coactivator 1-alpha),PPARγ(peroxisome proliferator-activated receptor gamma),PRDM16(histone-lysine Nmethyltransferase),and UCP1(uncoupling protein 1 in WAT were detected by western blot analysis and ***:After a 7-week induction period,rats in both the HFD and HFD+EA groups were 20%heavier than their initial weights before modeling(P<0.01,P<0.001).Following a 5-week EA intervention,the body mass and Lee index of obese rats were significantly reduced(P<0.05).The HE results showed that adipocytes in the HFD group displayed a significant increase in diameter and a decrease in number compared to the control ***,in the HFD+EA group,white adipocytes exhibited reduced diameter and appeared more regular i

关键词： Obesity Type 2 innate lymphoid cells Browning Adiposetissue Electroacupuncture

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Two-fold symmetry of the in-plane resistance in kagome superconductor Cs(V_(1-x)Ta_(x))_(3)Sb_(5) with enhanced superconductivity

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Chinese Physics B 2024年第7期33卷 9-14页

作者：赵振王汝文张宇航祝轲余维琪韩烨超刘家利胡国静郭辉林晓董晓莉陈辉杨海涛高鸿钧 Beijing National Center for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Songshan Lake Materials Laboratory Dongguan 523808China

The kagome superconductor CsV_(3)Sb_(5) has attracted widespread attention due to its rich correlated electron states including superconductivity, charge density wave(CDW), nematicity, and pair density wave. Notably, the modulation of the intertwined electronic orders by the chemical doping is significant to illuminate the cooperation/competition between multiple phases in kagome superconductors. In this study, we have synthesized a series of tantalum-substituted Cs(V_(1-x)Ta_(x))_(3)Sb_(5) by a modified self-flux method. Electrical transport measurements reveal that CDW is suppressed gradually and becomes undetectable as the doping content of x is over 0.07. Concurrently, the superconductivity is enhanced monotonically from T_(c) ~ 2.8 K at x = 0 to 5.2 K at x = 0.12. Intriguingly, in the absence of CDW, Cs(V_(1-x)Ta_(x))_(3)Sb_(5)(x = 0.12) crystals exhibit a pronounced two-fold symmetry of the in-plane angular-dependent magnetoresistance(AMR) in the superconducting state, indicating the anisotropic superconducting properties in the Cs(V_(1-x)Ta_(x))_(3)Sb_(5). Our findings demonstrate that Cs(V_(1-x)Ta_(x))_(3)Sb_(5) with the non-trivial band topology is an excellent platform to explore the superconductivity mechanism and intertwined electronic orders in quantum materials.

关键词： kagome superconductor charge density wave rotation symmetry breaking

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任务转换影响词对记忆:提取练习的补偿作用

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心理科学 2024年第2期47卷 308-315页

作者：肖晶晶张俐娟陈登水罗爽张锦坤福建师范大学心理学院福州350100

移动智能终端的应用提高了个体学习过程中的任务转换频率,重复练习可缓解判断类任务转换对速度和准确性的损害,但其对记忆任务的影响尚未明确。研究采用2(练习方式:重学,提取练习)×2(任务转换:是,否)×2(测试时间:初始,延迟)混合设计,... 详细信息

移动智能终端的应用提高了个体学习过程中的任务转换频率,重复练习可缓解判断类任务转换对速度和准确性的损害,但其对记忆任务的影响尚未明确。研究采用2(练习方式:重学,提取练习)×2(任务转换:是,否)×2(测试时间:初始,延迟)混合设计,考察不同练习方式的记忆类任务转换是否存在类似促进效应。结果发现,不同练习方式下任务转换均损害记忆准确性;初始和延迟测试(48h)中提取练习的记忆准确性均高于重学。研究表明,任务转换对记忆的损害源于任务集切换,但提取在记忆建构和搜索上的优势加强了记忆痕迹,对任务转换中的重复任务具有补偿作用。

关键词：任务转换成本提取练习记忆

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跨界小RNA调控昆虫与寄主植物及病原微生物互作的研究进展

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昆虫学报 2024年第7期67卷 1019-1028页

作者：李贞陈皓玮方海波刘小侠张松斗中国农业大学植物保护学院昆虫学系北京100193

小RNA(small RNA,sRNA)是一类序列短于300 bp的非编码RNA,它在生物体的细胞生长、分裂、分化、增殖和凋亡过程中发挥着重要的调控作用。近年来的多项研究表明,sRNA还可以作为信号分子在物种之间传递,以跨界方式发挥调控作用。除了视觉... 详细信息

小RNA(small RNA,sRNA)是一类序列短于300 bp的非编码RNA,它在生物体的细胞生长、分裂、分化、增殖和凋亡过程中发挥着重要的调控作用。近年来的多项研究表明,sRNA还可以作为信号分子在物种之间传递,以跨界方式发挥调控作用。除了视觉和化学信息,生物个体之间还可以利用多种分子信号传递和实现信息交流,其中,sRNA分子不仅可以在生物个体内移动和调控基因表达,还可以作为1种分子信号跨越物种发挥动物、植物和微生物互作关系的信息纽带作用。作为地球上物种数量最多、生态位最丰富的类群,昆虫体内存在多种外源sRNA分子。本文分析了sRNA介导跨界调控的分子基础,综述了近年来关于外源sRNA通过生物互作进入昆虫体内,跨界调控昆虫基因表达,影响昆虫与寄主植物及病原微生物之间互作关系的研究进展,并分析了sRNA介导的跨界RNAi对昆虫生态适应性的影响以及在害虫防控中的应用前景。昆虫和植物之间sRNA分子的跨界转移可以调控植物抗虫性和社会性昆虫的品级分化,微生物的sRNA进入昆虫体内可以辅助病原微生物的侵染或影响寄生蜂的发育。利用基因工程改造或人工表达外源sRNA进行跨界调控是研发害虫高效生防产品的新途径。

关键词：昆虫分子信号小RNA 跨界调控生物互作害虫防控

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Transpiration-prompted Photocatalytic Degradation of Dye Pollutant with AuNPs/PANI Based Cryogels

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Chinese Journal of Polymer Science 2022年第10期40卷 1141-1153,I0006,I0005页

作者： xiao-xiao Guo Shi-Chang Hou Jun chen Cong Liao Wei-Dong He CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China

Incautious discharge of organic dyes such as methyl orange(MO)has produced serious pollution to the environment,calling for the efficient techniques to remove them with retaining the green *** photo-catalytic degradation of organic dyes is promising among the developed ***,a strategy based on transpiration-prompted photocatalytic degradation of dye pollutant under sunlight is put ***(ANI)is graft-polymerized onto poly(acrylamide-co-N-4-aminophenylacrylamide)(PAAm)cryogel embedded with gold nanoparticles(AuNPs,diameter:4-10 nm).The obtained cryogels integrated with AuNPs and PANI inside PAAm matrix(AuNP@PAAm-g-PANI)have been structurally explored based on the chemical composition and the phase/porous *** and TEM observation shows that PANI and AuNPs are uniformly distributed in PAAm *** the macro-porosity of cryogel,hydrophilicity of PAAm and photo-thermal activity of PANI,PAAm-g-PANI cryogels without AuNPs can have a photo-thermal evaporation rate of water at 1.63 kg·m^(-2)·h^(-1).As a comparison,Au NP@PAAm-g-PANI cryogels with AuNPs exhibit higher one at 2.20 kg·m^(-2)·h^(-1),suggesting the promotion of AuNPs to photo-thermal ***,PANI appreciatively assists AuNPs to display higher catalytic ability for the oxidative degradation of ***,the removal of MO from water is obviously prompted by the water transpiration under sunlight with AuNP@PAAm-g-PANI cryogels,whose rate constant can reach to 0.320 h^(-1),being three folds of that for the sole absorption of *** transpiration-prompted photocatalytic degradation provides a fascinating route to eliminate organic pollutants and obtain pure water from wastewater simultaneously with sustainable sunlight energy.

关键词： Photothermal evaporation Photocatalytic degradation Sunlight Organic dye Composite cryogel

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