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超声可视化引导下鼻肠管置入术在神经重症病房的临床应用

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甘肃医药 2024年第5期43卷 428-429,432页

作者：魏政勇豆欣蔓张妍妮吕朋宾宋亚奇兰州大学第二医院甘肃兰州730000

目的:探讨利用床旁超声可视化引导下鼻肠管置入在神经重症病房临床应用的安全性与可行性。方法:选取2023年6~10月我院神经外科ICU收治的需行鼻肠管留置的颅脑创伤患者60例,随机分为观察组(床旁超声引导组)和对照组(盲插组),各30例。比... 详细信息

目的:探讨利用床旁超声可视化引导下鼻肠管置入在神经重症病房临床应用的安全性与可行性。方法:选取2023年6~10月我院神经外科ICU收治的需行鼻肠管留置的颅脑创伤患者60例,随机分为观察组(床旁超声引导组)和对照组(盲插组),各30例。比较两组患者的鼻肠管置管成功率(首次置管成功率及最终置管成功率)及并发症发生率(呕吐、出血、心律失常)。结果:观察组首次鼻肠管置管成功率(73.3%)及最终置管成功成功率(80.0%)均高于对照组,差异均有统计学意义(P0.05)。结论:神经重症患者采用床旁超声可视化引导置入鼻肠管可提高置管成功率且安全可行。

关键词：神经重症病房颅脑创伤鼻肠管超声可视化引导盲插置管

Unveiling the planar deformation mechanisms for improved formability in pre-twinned AZ31 Mg alloy sheet at warm temperature

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Journal of Magnesium and Alloys 2023年第12期11卷 4659-4678页

作者： Xiaohuan Pan Lifei Wang pengbin lu Hua Zhang Guangsheng Huang Liuwei Zheng Bin Xing Weili Cheng Hongxia Wang Wei Liang Kwang Seon Shin Shanxi Key Laboratory of Advanced Magnesium-Based Materials College of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuan 030024China National Engineering Laboratory for Industrial Big-data Application Technology Chongqing Innovation Center of Industrial Big-Data Co.Ltd.Chongqing 400707China School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Institute for Advanced Studies in Precision Materials Yantai UniversityYantai 264005China National Engineering Research Center for Magnesium Alloys College of Materials Science&EngineeringChongqing UniversityChongqing 400044China Magnesium Technology Innovation Center School of Materials Science and EngineeringSeoul National University1 Gwanak-roGwanak-guSeoul 08826South Korea

To investigate the role of pre-twins in Mg alloy sheets during warm planar deformation, the stretch forming is conducted at 200 ℃. Results suggest the formability of the pre-twinned AZ31 Mg alloy sheet is enhanced to 11.30 mm. The mechanisms for the improved formability and the deformation behaviors during the planar stretch forming are systematically investigated based on the planar stress states. The Schmid factor for deformation mechanisms are calculated, the results reveal that planar stress states extremely affect the Schmid factor for {10-12}twinning. The detwinning is activated and the prismatic slip is enhanced in the pre-twinned sheet, especially under the planar extension stress state in the outer region. Consequently, the thickness-direction strain is accommodated better. The dynamic recrystallization(DRX) type is continuous DRX(CDRX) regardless of the planar stress state. However, the CDRX degree is greater under the planar extension stress *** twin lattices deviate from the perfect {10-12} twinning relation due to the planar compression stress state and the CDRX. The basal texture is weakened when the planar stress state tends to change the texture components.

关键词： AZ31 Mg alloy sheet Planar stretch forming Planar stress states Continuous dynamic recrystallization {10-12}tensile twinning

2,6-Diisopropoxyphenyl Dicyclohexyl Phosphine:A New Ligand for Palladium-Catalyzed Amination Reactions of Aryl Chlorides with KOH as the Base

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2,6-Diisopropoxyphenyl Dicyclohexyl Phosphine:A New Ligand f...

洛南任家滩—荞麦山正长斑岩成因及其对古元古代晚期裂解的指示——岩石化学及锆石U-Pb年龄和lu—Hf同位素特征

第十六届全国金属有机化学学术讨论会

作者： Bo lu,pengbin Li,Chunling Fu and Shengming Ma~* Laboratory of Molecular Recognition and Synthesis,Department of Chemistry,Zhejiang University,Hangzhou 310027,Zhejiang,P.R.China

＜正＞Recently,we have developed a readily available monophosphine ligand（Scheme 1,L1） which has been used in the highly selective Suzuki coupling reaction of C-C1 *** this paper,we wish to report a new easily prepared monophosphine ligand,that is,dicyclohexyl（2,6-diisopropoxyphenyl）phosphine（L2）,which could be

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地质论评 2024年第1期70卷 83-101页

作者：李毅李佐臣赵端昌赵鹏彬吕军利张亚峰长安大学地球科学与资源学院西安710054 陕西省矿产地质调查中心西安710068 陕西省地质调查院西安710054

华北克拉通南缘的陕西洛南—河南豫西地区出露一系列形成于1.8~1.6 Ga的碱性岩,对这些碱性岩的研究有助于提高对华北克拉通南缘古元古代构造环境的认识。笔者等选取陕西省洛南县任家滩—荞麦山一带碱性侵入体进行系统的岩石学、LA-ICP-M... 详细信息

华北克拉通南缘的陕西洛南—河南豫西地区出露一系列形成于1.8~1.6 Ga的碱性岩,对这些碱性岩的研究有助于提高对华北克拉通南缘古元古代构造环境的认识。笔者等选取陕西省洛南县任家滩—荞麦山一带碱性侵入体进行系统的岩石学、LA-ICP-MS锆石U-Pb年代学、lu—Hf同位素分析和岩石地球化学研究,讨论了其成因机制和构造背景。研究表明,任家滩—荞麦山岩体的主体岩性为正长斑岩,加权平均年龄为1689±20 Ma(MSWD=0.12),表明其侵位时代为古元古代。该岩体富碱(Na_(2)O+K_(2)O=7.95%~9.5%),高钾(K_(2)O=4.67%~8.51%);稀土元素总量较高(496.15×10^(-6)~650.16×10^(-6),平均543.06×10^(-6)),轻、重稀土元素分馏比较明显,轻稀土元素相对富集(LREE=454×10^(-6)~605×10^(-6)),重稀土元素亏损(HREE=39.3×10^(-6)~45.6×10^(-6)),具有弱负铕异常;K、Rb、Ba、Th富集,Nb、Ta、P、Ti亏损,并且具有明显的Sr负异常。εHf(t)值<0,TDM1值为2038~2218 Ma,TDM2值为2250~2516 Ma,说明岩浆源区物质与富集地幔有关或受到过地壳物质的混染。因此,任家滩—荞麦山岩体是由地幔玄武质岩浆与地壳基底太华杂岩形成的中酸性花岗质岩浆混合后形成的熔体,经强烈的结晶分异作用形成的,其形成于陆内裂谷的构造环境,是华北克拉通南缘对哥伦比亚超大陆裂解事件的响应。

关键词：华北克拉通南缘碱性侵入体哥伦比亚超大陆裂解

A self-power photodetector based on controlled growth of single crystal MAPbBr_(3)/WO_(3) heterojunction

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中国科学:技术科学英文版 2023年第9期66卷 2660-2668页

作者： YAO JianFeng ZHANG Hu lu JunZheng YANG LiangPan LIU DuanWangDe HU YaLi ZENG Wei GUI pengbin CHEN ZhiLiang REN XinGang Information Materials and Intelligent Sensing Laboratory of Anhui Province Anhui UniversityHefei 230039China Anhui Province Key Laboratory of Target Recognition and Feature Extraction Lu’an 237009China Hefei Comprehensive National Science Center Hefei 230601China School of Physics and Electronic Engineering Hubei University of Arts and ScienceXiangyang 441053China

Compared with polycrystalline films, perovskite single crystal is considered as a promising photoelectric material due to its unique advantages in quantum efficiency and carrier diffusion length. In this work, the micron-thickness MAPbBr_(3) single crystal was prepared through a highly repeatable process based on the crystal seed dissolution-growth method. A heterojunction of MAPbBr_(3)/WO_(3) single crystal was realized through a simple thermal evaporation process, and the integrated C/MAPbBr_(3)/WO_(3)/C device demonstrated self-powered characteristics and high photoelectric performance, which showed good responsivity of about 111 mA/W, detectivity of 9.64×10^(11) Jones and fast response speed(0.11/0.56 ms). Meanwhile, the device exhibited good rectification performance(ratio of 125 at ±2 V) and reduced dark current due to the built-in electric field formed in the heterojunction. This study provides a facile, flexible, and highly repeatable method for the preparation of high-performance photodetectors based on MAPbBr_(3) single crystals with micrometer thickness.

关键词： perovskite single crystal heterojunction self-powered photodetectors

胫骨上端高位截骨术与单髁置换术治疗膝关节单侧骨性关节炎的效果比较

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临床医学 2024年第5期44卷 16-19页

作者：卫鹏斌高虎方朱广伟丁韶龙卢豪陈文勇秦旭河南省三门峡市中心医院骨科 472000

目的比较胫骨高位截骨术(HTO)与单髁置换术(UKA)治疗膝关节单侧骨性关节炎(OA)的临床效果。方法选取2018年10月至2022年10月于三门峡市中心医院住院治疗的94例膝关节单侧OA患者为研究对象。根据治疗方法分为A组与B组,A组38例患者行HTO治... 详细信息

目的比较胫骨高位截骨术(HTO)与单髁置换术(UKA)治疗膝关节单侧骨性关节炎(OA)的临床效果。方法选取2018年10月至2022年10月于三门峡市中心医院住院治疗的94例膝关节单侧OA患者为研究对象。根据治疗方法分为A组与B组,A组38例患者行HTO治疗,B组56例患者行UKA治疗。两组术后均随访1年。比较两组临床相关指标、疼痛视觉模拟评分(VAS)评分、膝关节功能[胫骨角(FTA)、膝关节活动度(ROM)、美国特种外科医院评分量表(HSS)]、术后并发症等指标。结果B组手术时间、术后下床时间、住院时间均短于A组,差异有统计学意义(P0.05)。术前,两组日常活动VAS评分及爬楼梯VAS评分比较差异未见统计学意义(P>0.05);术后1周及术后1年,两组日常活动VAS评分及爬楼梯VAS评分均较术前降低(P0.05)。术前,两组FTA、ROM、HSS评分及Lysholm评分比较差异未见统计学意义(P>0.05);术后,两组FTA减少,ROM、HSS评分及Lysholm评分均增加,差异有统计学意义(P0.05)。两组术后并发症发生率比较,差异未见统计学意义(P>0.05)。结论HTO及UKA治疗膝关节单侧OA的效果均显著,UKA在缩短手术时间、促进术后康复方面效果更佳,而HTO在改善膝关节活动度方面具有优势;但对于术后疼痛评分和术后并发症发生率方面,两种手术治疗无明显差异。

关键词：骨性关节炎膝关节胫骨高位截骨术单髁置换术

Demonstration of a manufacturable SOT-MRAM multiplexer array towards industrial applications

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Journal of Semiconductors 2023年第12期44卷 81-88页

作者： Chuanpeng Jiang Jinhao Li Hongchao Zhang Shiyang lu pengbin Li Chao Wang Zhongkui Zhang Zhengyi Hou Xu Liu Jiagao Feng He Zhang Hui Jin Gefei Wang Hongxi Liu Kaihua Cao Zhaohao Wang Weisheng Zhao School of Integrated Circuit Science and Engineering Beihang UniversityBeijing 100191China Truth Memory Corporation Beijing 100088China

We have successfully demonstrated a 1 Kb spin-orbit torque(SOT)magnetic random-access memory(MRAM)multiplexer(MUX)array with remarkable *** 1 Kb MUX array exhibits an in-die function yield of over 99.6%.Additionally,it provides a sufficient readout window,with a TMR/RP_sigma%value of ***,the SOT magnetic tunnel junctions(MTJs)in the array show write error rates as low as 10^(-6)without any ballooning effects or back-hopping behaviors,ensuring the write stability and *** array achieves write operations in 20 ns and 1.2 V for an industrial-level temperature range from-40 to 125℃.Overall,the demonstrated array shows competitive specifications compared to the state-of-the-art *** work paves the way for the industrial-scale production of SOT-MRAM,moving this technology beyond R&D and towards widespread adoption.

关键词： spin-orbit torque MRAM multiplexer array 200 mm-wafer platform stability reliability