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施工技术 2006年第S2期35卷 207-209页

作者：邢明范玉恕陈印桥天津三建建筑工程有限公司天津300170

介绍了天津一工程中大截面大跨度转换梁的模板支架的搭设方案,对模板受力进行了分析,并对模板的搭设方法和施工安全技术措施进行了介绍。

关键词：模板转换梁措施施工技术

后交叉韧带胫骨附着点撕脱骨折:关节镜治疗中的材料、植入物及内固定技术

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中国组织工程研究 2025年第4期29卷 872-880页

作者：余铭王文贵州医科大学贵州省贵阳市550004 暨南大学附属广州市红十字会医院广东省广州市510220

背景:治疗后交叉韧带胫骨附着点撕脱骨折的最佳手术技术仍值得商榷。随着关节镜手术的应用与成熟,它在后交叉韧带胫骨附着点撕脱骨折的诊疗中有很大前景。目的:综述关节镜技术在后交叉韧带胫骨附着点撕脱骨折治疗中的应用与进展,包括不... 详细信息

背景:治疗后交叉韧带胫骨附着点撕脱骨折的最佳手术技术仍值得商榷。随着关节镜手术的应用与成熟,它在后交叉韧带胫骨附着点撕脱骨折的诊疗中有很大前景。目的:综述关节镜技术在后交叉韧带胫骨附着点撕脱骨折治疗中的应用与进展,包括不同关节镜治疗方法、手术入路、胫骨隧道设计、缝合材料选择以及内固定植入物选择等。方法:通过计算机对中国知网、PubMed、Web of Science及ScienceDirect等数据库中的相关文献进行检索,检索时间为2003年1月至2023年11月,中文检索词为“后交叉韧带,后十字韧带,撕脱骨折,关节镜”;英文检索词为“posterior cruciate ligament,avulsion,fracture,tibia,arthroscopic,operation,fixation,treatment”。共纳入97篇文献进行综述。结果与结论:关节镜技术提供了一种可靠的治疗方式来治疗后交叉韧带胫骨附着点撕脱骨折。根据入路、缝合材料类型以及用于缝合的入路和胫骨隧道数量等不同,关节镜技术可以分为关节镜下缝线固定结合自体移植物增强重建、关节镜下多交叉带缝合桥固定、关节镜下高强度缝线固定以及关节镜下直接前后缝合悬吊固定等几类。在各种研究中,常用的临床结果评估指标包括关节活动度、Lysholm评分、国际膝关节文献委员会评分及KT-2000关节测量仪差等,研究显示关节镜手术后末次随访时上述指标检测结果较术前显著改善,影像学随访结果显示关节镜手术都取得了令人满意的结果。在随访过程中,接受关节镜技术治疗后的各类交叉韧带胫骨附着点撕脱骨折患者都未出现严重并发症,例如创伤性关节炎、神经血管损伤、围手术期伤口感染、血栓形成以及骨折不愈合等。

关键词：后交叉韧带胫骨撕脱骨折关节镜手术缝合材料内固定治疗

Insight into the particle shape on the impact of dry granular flow against a rigid barrier: A DEM study

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Journal of Earth Science 2025年

作者： Rui-Xiao Zhan Dong Su Xiang-Sheng chen yuan-Jun Jiang Guo-Ping Lei Jing-Jing yu Key Laboratory for Resilient Infrastructures of Coastal Cities (MOE)， Shenzhen University College of Civil and Transportation Engineering， Shenzhen University School of Architecture and Urban Planning， Shenzhen University Shenzhen Key Laboratory of Green， Efficient and Intelligent Construction of Underground Metro Station， Shenzhen University Institute of Mountain Hazards and Environment， Chinese Academy of Sciences School of Transportation， Civil Engineering & Architecture， Foshan University

The effect of particle shape on the impact of dry granular flow remains an open area for further investigation. Five distinct particle shapes were examined in this study using discrete element simulations after calibrating the numerical model using a published work. The findings indicated that the particle shape had a significant influence on granular mobility. With negligible variations in normalized kinetic energy between particles of different shapes， the effect of particle shape on the increasing rate of kinetic energy became more obvious. All irregular particle scenarios had longer accumulated particle lengths down the channel than spherical particles. Variations in particle shape led to adjustments in the distribution of impact forces on the barrier. These findings substantially enhance our understanding of the distinctive effects of particle shapes on the impact mechanism of dry granular flow.

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A versatile synthetic strategy towards rare earth based metal-organic frameworks

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Science China Chemistry 2025年

作者： Quan Shi yun-Hao Xu ming-Hui chen Peng Zhao Wen-Bo Deng Ji Xiong Kai Guo Ya-Qing Feng Bao Zhang School of Chemical Engineering and Technology Tianjin University Tianjin Collaborative Innovation Center of Chemical Science and Engineering Guangdong Laboratory Chemistry & Fine Chemical Industry Jieyang Center

Rare earth metal-organic frameworks (RE-MOFs) have drawn wide attention owing to diverse network structures and various application ***,due to the unpredictable formation of the nodes,it is still challenging to design novel RE-MOFs.A novel versatile strategy was developed employing a RE-acetate complex (RE2(CH3COO)6·4H2O) as a precursor to construct RE-MOFs.2D RE-MOFs (RE-DBP) and 3D RE-MOFs (RE-TCPP) could be obtained by using dicarboxylic porphyrin ligands H2DBP and tetracarboxylic porphyrin ligands H2TCPP,*** RE-MOFs were further synthesized to verify the universality of the *** crystalline RE-MOFs could also be prepared at room temperature via the developed strategy,which could significantly promote large-scale preparation and practical application of *** proof of the concept,the performance of porphyrin-based RE-MOFs was investigated in the photocatalytic cycloaddition of CO2with *** the RE-DBP(Co) MOFs,Tb-DBP(Co) exhibited the best photocatalytic performance,which was also greater than that of the corresponding 3D MOF Tb-TCPP(Co) due to the optimal 2D structure and thus the accelerated photogenerated charge separation and transfer *** work not only provides a novel versatile strategy to design and develop RE-MOFs,but also proposes a promising approach for the potential bulk production of RE-MOFs at room temperature.

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Catalytic atroposelective synthesis of indolyl quinazolinones bearing N-N/C-C diaxes

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Science China Chemistry 2025年

作者： Ning-Yi Wang Shuo Gao Zhu-Di Shu Bei-Bei cheng Chun Ma yu-chen Zhang Feng Shi Research Center of Chiral Functional Heterocycles School of Chemistry and Materials Science Jiangsu Normal University School of Petrochemical Engineering Changzhou University School of Chemistry and Chemical Engineering Henan Normal University

The first catalytic atroposelective synthesis of indole derivatives bearing N-N/C-C diaxes has been established by the strategy of de novo ring formation. By this strategy, various indolyl quinazolinones bearing vicinal N-N/C-C diaxes were synthesized in high yields with overall good diastereoselectivities and excellent enantioselectivities via chiral phosphoric acid-catalyzed onepot asymmetric formal (5+1) cycloaddition/oxidation reaction. Moreover, such indolyl quinazolinones bearing vicinal N-N/CC diaxes have good configurational stability and could be converted into new chiral ligands with applications in asymmetric catalysis. Therefore, this work not only offered a new member for the family of diaxial atropisomers, but also provided a powerful strategy for catalytic asymmetric synthesis of atropisomers bearing N-N/C-C diaxes.

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Recent progress on photoactive nonprecious transition-metal complexes

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Science China Chemistry 2025年第1期68卷 46-95页

作者： Zhong-Liang Gong Hong-Jie Zhang Yan cheng Jianxun Liu yuhan Ai Yaqin Li Zhihui Feng Qiong Zhang Shaolong Gong Yong chen Chang-Jiang Yao yuan-yuan Zhu Liang-Jin Xu yu-Wu Zhong CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences State Key Laboratory of Structural Cemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences School of Chemistry and Chemical Engineering Anhui Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of Technology State Key Laboratory of Explosion Science and Safety Protection School of Mechatronical Engineering Beijing Institute of Technology College of Chemistry and Molecular Sciences Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University School of Chemistry and Chemical Engineering Anhui University Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences

Photoactive complexes of nonprecious transition metals, mainly including those in the first-row and partially the second-row of the Periodic table of elements, have received increasing attention in view of their low cost and long-term sustainability. They are recognized as promising alternatives to noble transition metal complex congeners that have been extensively studied in optoelectronic devices, artificial photosynthesis, photocatalysis, biodiagnostics, and therapeutics, etc. This review is devoted to a comprehensive summary on the classical and recent advances on photoactive nonprecious transition metal complexes, including photoactive Zr, V, Cr, Mo, and W complexes, Mn complexes and hybrids, Fe, Co, Ni, and Cu complexes, and Zn and Cd complexes and hybrids. A particular focus is given on the molecular design, modulation of photophysical and photochemical properties, and applications of the representative and lately-developed nonprecious metal complexes. In addition, a perspective on the future development in this field is provided at the end of this review.

关键词： photoactive metal complexes earth-abundant metals nonprecious metal complexes luminescence photochemistry

Comparative analysis of empirical and deep learning models for ionospheric sporadic E layer prediction

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Earth and Planetary Physics 2025年第1期9卷 10-19页

作者： BingKun yu PengHao Tian XiangHui Xue Christopher JScott HaiLun Ye JianFei Wu Wen Yi TingDi chen XianKang Dou Institute of Deep Space Sciences Deep Space Exploration LaboratoryHefei 230088China CAS Key Laboratory of Geospace Environment School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Hefei National Laboratory University of Science and Technology of ChinaHefei 230088China Department of Meteorology University of ReadingReading RG66BBUK

Sporadic E(Es)layers in the ionosphere are characterized by intense plasma irregularities in the E region at altitudes of 90-130 *** they can significantly influence radio communications and navigation systems,accurate forecasting of Es layers is crucial for ensuring the precision and dependability of navigation satellite *** this study,we present Es predictions made by an empirical model and by a deep learning model,and analyze their differences comprehensively by comparing the model predictions to satellite RO measurements and ground-based ionosonde *** deep learning model exhibited significantly better performance,as indicated by its high coefficient of correlation(r=0.87)with RO observations and predictions,than did the empirical model(r=0.53).This study highlights the importance of integrating artificial intelligence technology into ionosphere modelling generally,and into predicting Es layer occurrences and characteristics,in particular.

关键词： ionospheric sporadic E layer radio occultation ionosondes numerical model deep learning model artificial intelligence

腹膜透析患者体质量指数与腹膜透析充分性的关系

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中国现代医学杂志 2022年第12期32卷 90-95页

作者：陈铭聿周丽君李建中肖卓韬李琳徐德宇苏州大学附属第一医院肾内科江苏苏州215008

目的探讨腹膜透析患者体质量指数(BMI)与腹膜透析充分性的关系。方法回顾性分析2016年1月—2020年5月在苏州大学附属第一医院肾内科行腹膜透析并规律随访的282例患者。按BMI分为低体质量组(BMI<18.5 kg/m^(2))、正常体质量组(18.5~23.9 ... 详细信息

目的探讨腹膜透析患者体质量指数(BMI)与腹膜透析充分性的关系。方法回顾性分析2016年1月—2020年5月在苏州大学附属第一医院肾内科行腹膜透析并规律随访的282例患者。按BMI分为低体质量组(BMI<18.5 kg/m^(2))、正常体质量组(18.5~23.9 kg/m^(2))、超体质量组(24~27.9 kg/m^(2))和肥胖组(BMI≥28 kg/m^(2)),连续观察12个月,收集临床资料并进行统计学分析。结果4组患者的BMI、糖尿病、增加透析剂量、增加腹膜透析液浓度、腹膜炎发生率比较,差异有统计学意义(P<0.05)。低体质量组、正常体质量组、超体质量组、肥胖组患者腹膜透析开始后1个月、6个月及12个月Kt/V、D/Pcr比较,采用重复测量设计的方差分析,结果:①不同时间点Kt/V、D/Pcr有差异(F=2.115和2.384,P=0.144和0.589);②4组患者的Kt/V、D/Pcr有差异(F=4.151和0.286,P=0.033和0.834);③4组患者的Kt/V、D/Pcr变化趋势无差异(F=0.545和1.346,P=0.476和0.644)。多元线性回归分析结果显示,性别、残余肾功能、血白蛋白是腹膜透析1个月后每周总Kt/V的影响因素(b=0.314、0.061和0.016,P=0.001、0.001和0.020);性别及BMI是腹膜透析12个月后每周总Kt/V的影响因素(b=0.386和-0.029,均P=0.001);性别、BMI、糖尿病是腹膜透析12个月后D/Pcr的影响因素(b=-0.047、0.081和-0.005,P=0.006、0.003和0.047)。多因素Logistics回归分析结果显示:高BMI[OR=1.110(95%CI:1.006,1.225)]、高龄[OR=1.049(95%CI:1.022,1.077)]及低白蛋白[OR=0.911(95%CI:0.852,0.975)]是腹膜透析12个月后发生腹膜炎的危险因素(P<0.05)。结论高BMI腹膜透析患者可能具有较低的腹膜透析充分性,更容易发生腹膜透析相关性腹膜炎,BMI可作为远期腹膜功能评估指标。

关键词：腹膜透析腹膜透析充分性体质量指数

Pulsed dynamic electrolysis enhanced PEMWE hydrogen production:Revealing the effects of pulsed electric fields on protons mass transport and hydrogen bubble escape

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Journal of Energy Chemistry 2025年第1期100卷 201-214页

作者： Xuewei Zhang Wei Zhou yuming Huang Liang Xie Tonghui Li Huimin Kang Lijie Wang Yang yu Yani Ding Junfeng Li Jiaxiang chen Miaoting Sun Shuo cheng Xiaoxiao Meng Jihui Gao Guangbo Zhao School of Energy Science and Engineering Harbin Institute of Technology China Datang Technology Innovation Co. Ltd

The transition of hydrogen sourcing from carbon-intensive to water-based methodologies is underway,with renewable energy-powered proton exchange membrane water electrolysis （PEMWE） emerging as the preeminent pathway for hydrogen *** remarkable advancements in this field,confronting the sluggish electrochemical kinetics and inherent high-energy consumption arising from deteriorated mass transport within PEMWE systems remains a formidable *** impediment stems primarily from the hindered protons mass transfer and the untimely hydrogen bubbles *** address these challenges,we harness the inherent variability of electrical energy and introduce an innovative pulsed dynamic water electrolysis *** to constant voltage electrolysis (hydrogen production rate:51.6 m L h-1,energy consumption:5.37 kWh Nm-3H2),this strategy (hydrogen production rate:66 m L h-1,energy consumption:3.83 kWh Nm-3H2) increases the hydrogen production rate by approximately 27%and reduces the energy consumption by about 28%.Furthermore,we demonstrate the practicality of this system by integrating it with an off-grid photovoltaic （PV） system designed for outdoor operation,successfully driving a hydrogen production current of up to 500 mA under an average voltage of approximately 2 *** combined results of in-situ characterization and finite element analysis reveal the performance enhancement mechanism:pulsed dynamic electrolysis （PDE） dramatically accelerates the enrichment of protons at the electrode/solution interface and facilitates the release of bubbles on the electrode *** such,PDE-enhanced PEMWE represents a synergistic advancement,concurrently enhancing both the hydrogen generation reaction and associated transport *** promising technology not only redefines the landscape of electrolysis-based hydrogen production but also holds immense potential for broadening its application across a diverse spectrum of electrocatalytic endeavors.

关键词： Electrolysis

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黄土地区沟谷型泥流单沟及区域预警

水土保持研究 2025年第2期32卷 191-197页

作者：陈龙余斌成都理工大学地质灾害防治与地质环境保护国家重点实验室成都610059

[目的]提出黄土地区沟谷型泥流的单沟及区域预警模型,为黄土地区泥流预警提供参考。[方法]通过收集文献资料,对泥流形成的降雨条件、地形条件、地质条件数据进行了分析,采用通用泥石流预警方法演变的泥流预警模型对黄土部分地区泥流进... 详细信息

[目的]提出黄土地区沟谷型泥流的单沟及区域预警模型,为黄土地区泥流预警提供参考。[方法]通过收集文献资料,对泥流形成的降雨条件、地形条件、地质条件数据进行了分析,采用通用泥石流预警方法演变的泥流预警模型对黄土部分地区泥流进行了单沟及区域预警,并与基于临界降雨强度的预警方法对比。[结果]单沟预警中,泥流预警模型对黄土地区47次泥流事件进行预警的成功率约90%;区域预警中,泥流预警模型对西峰区、镇原县及延安市进行预警的成功率接近100%;利用综合降雨临界值对黄土地区泥流进行简便降雨预警的成功率约90%。[结论]采用泥流预警模型对黄土地区泥流进行单沟及区域预警相比于其他研究中基于临界降雨强度的预警方法考虑因素更全面,有更高的准确率,预警结果更细致。

关键词：泥流预警模型临界降雨单沟