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哈尔滨工程大学学报 2021年第6期42卷 833-838页

作者：王永强刘宇阳于姝雯卢熙群马旋哈尔滨工程大学动力与能源工程学院黑龙江哈尔滨150001 中国船舶及海洋工程设计研究院上海200011

活塞环-缸套摩擦副润滑油中掺杂固体颗粒会导致液固两相润滑的出现,为研究颗粒效应对润滑特性的影响,本文采用往复摩擦磨损试验机在有无颗粒作用下进行活塞环-缸套摩擦力的实验测试。再通过实验测定颗粒的几何形状特征及缸套的力学性能... 详细信息

活塞环-缸套摩擦副润滑油中掺杂固体颗粒会导致液固两相润滑的出现,为研究颗粒效应对润滑特性的影响,本文采用往复摩擦磨损试验机在有无颗粒作用下进行活塞环-缸套摩擦力的实验测试。再通过实验测定颗粒的几何形状特征及缸套的力学性能。最后分析颗粒对润滑特性的影响。结果表明:滑油中加入固体颗粒后摩擦力大幅度增加。

关键词：润滑油颗粒活塞环-缸套摩擦力几何形状特征力学性能润滑特性实验研究

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Highly efficient and selective solvent extraction of zirconium and hafnium from chloride acid solution including amic acid extractant

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SEPARATION AND PURIFICATION TECHNOLOGY 2021年 279卷 119779-119779页

作者： Ma, Shuai Yang, Fan Tan, Fengzhi Xie, Meiying yu, shuwen Xue, Liyan Li, Zhiwan Hu, Tianxi Dalian Polytech Univ Sch Light Ind & Chem Engn Dalian 116034 Peoples R China Chinese Acad Sci Fujian Inst Res Struct Matter Fuzhou 350002 Peoples R China Chinese Acad Sci Xiamen Inst Rare Earth Mat Haixi Inst Xiamen 361021 Peoples R China Fujian Prov Joint Innovat Key Lab Fuel & Mat Clea Xiamen 361021 Peoples R China Nucl Power Inst China Natl Key Lab Nucl Fuel & Mat Chengdu 610041 Peoples R China Sanxiang Adv Mat Co Ltd Ningde 355500 Peoples R China

Nuclear-grade zirconium (Zr) and hafnium (Hf) play an inevitably strategic role in the sustainable development of the nuclear industry. However, the efficient separation of Zr ions and Hf ions is still problematic due to their approximate ionic radii. This work, provides a novel strategy for separating Zr ions and Hf ions by solvent extraction using an HCl solution containing the green amic acid N, N-di-2-ethylhexyl diglycolamic acid (D2EHDGAA). The results demonstrated that D2EHDGAA in HCl solution presented excellent separation performance for Zr ions and Hf ions. The separation factor (beta(Zr/Hf)) in the simulation liquid was 11.4, and that in the zirconium oxychloride hydrolysate was 34.5 at an HCl concentration of 2.5 mol/L. In addition, the slope method shows that the concentration of CF in the feeding water phase plays a controlling role in the separation of Zr ions and Hf ions. Compared with HCl, HNO3 and ultrapure water, stripping can reach 94.3% at a H2SO4 concentration of 0.1 mol/L. Hopefully, the new environmentally friendly D2EHDGAA-HCl system can match the methyl isobutyl ketone (MIBK)-HSCN system for efficient and selective extraction of Zr and Hf ions and show optimistic application prospects in industry.

关键词： Zirconium Hafnium N,N-di-2-ethylhexyl diglycolic acid Solvent extraction Sulfuric acid stripping

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COF-999: A High-Performance CO 2 Adsorbent for Direct Air Capture Technology

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Green Carbon 2025年

作者： Zibo Yang Qingqing Li Bin Li Tongan Yan shuwen yu Zhihua Qiao Hebei Key Laboratory of Heterocyclic Compounds Hebei Center for New Inorganic Optoelectronic Nanomaterial Research Technology Innovation Center of Nanosized Natural Products and New Materials of Hebei province Handan University Handan Hebei 056005 China State Key Lab of Separation Membranes and Membrane Processes Tiangong University No. 399 Binshuixi Road Tianjin 300387 China School of Chemistry and Chemical Engineering Tiangong University Tianjin 300387 China School of Chemical Engineering The University of Queensland St Lucia QLD 4072 Australia School of Chemistry and Chemical Engineering Suzhou University Suzhou 234000 China

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Dion-Jacobson and Ruddlesden-Popper double-phase 2D perovskites for solar cells

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NANO ENERGY 2021年 88卷 106249-106249页

作者： Fu, Ping Liu, Yang yu, shuwen Yin, Heng Yang, Bowen Ahmad, Sajjad Guo, Xin Li, Can Chinese Acad Sci Dalian Inst Chem Phys State Key Lab Catalysis Dalian Natl Lab Clean Energy Zhongshan Rd 457 Dalian 116023 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China Ecole Polytech Fed Lausanne SB ISIC Lab Photomol Sci CH G1 523Batiment CH CH-1015 Lausanne Switzerland

Dion-Jacobson (DJ) phase and Ruddlesden-Popper phase 2D perovskites have been, individually, demonstrated to be more stable than 3D counterparts for perovskite solar cells (PSCs). In order to further improve the efficiency and stability of 2D PSCs, we herein report merging them to construct a DJ:RP double-phase perovskite (DPP) structure for the first time. With the DJ 2D perovskite composed of diammonium as the matrix, a monoammonium with a larger size than the diammonium is incorporated to form an independent RP phase 2D perovskite coexisting with the DJ one (DJ:RP DPP structure), which facilitates crystal growth, suppresses charge recombination, and improves charge transport. As a comparison, introduction of a smaller monoammonium than the diammonium leads to its insertion between inorganic slabs, yielding a distorted DJ 2D perovskite structure, which induces lattice relaxation/distortion and thus lowered charge transportation. Consequently, 2D PSCs based on the DJ:RP DPP afford an impressive efficiency of 13.8% with excellent thermal stability at 85 degrees C in damp air. This work demonstrates a new and promising strategy of developing the DJ:RP DPP for highly efficient and robust 2D PSCs.

关键词： Dion-Jacobson Ruddlesden-Popper Double-Phase Perovskite 2D Perovskites Perovskite Solar Cells

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Increased Lifetime Risk of ESRD in Familial IgA Nephropathy

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KIDNEY INTERNATIONAL REPORTS 2021年第1期6卷 91-100页

作者： Shi, Manman yu, shuwen Ouyang, Yan Jin, yuanmeng Chen, Zijin Wei, Wenjie Fang, Zhengying Du, Wen Wang, Zhaohui Weng, Qinjie Tong, Jun Pan, Xiaoxia Wang, Weiming Krzysztof, Kiryluk Chen, Nan Xie, Jingyuan Shanghai Jiao Tong Univ Shanghai Ruijin Hosp Inst Nephrol Dept NephrolSch Med Shanghai 200025 Peoples R China Nanjing Univ Chinese Med Tradit Chinese Med Hosp Kunshan Dept Nephrol Kunshan Jiangsu Peoples R China Columbia Univ Coll Phys & Surg Dept Med Div Nephrol New York NY USA

Introduction: Familial IgA nephropathy (IgAN) has been widely reported. However, its clinicohistologic characteristics and long-term prognosis are not clear. Methods: A total of 348 familial IgAN cases from 167 independent families were recruited and their clinicohistologic characteristics as well as lifetime risk of end-stage renal disease (ESRD) were compared to 1116 sporadic IgAN patients from the same geographic region. Results: Of all familial IgAN patients, 60 (17%) came from 32 single-generation (SG;all affected individuals are siblings) families, whereas 286 (82%) came from 134 multiple-generation (MG;affected individuals were present in at least 2 consecutive generations) families. The lifetime ESRD risk was significantly higher in familial patients than sporadic ones after adjusting by gender (hazard ratio [HR]=1.40, 95% confidence interval [CI]: 1.12-1.74, P = 0.004), with 5 years younger in median ESRD age (60 years vs. 65 years in familial and sporadic cases separately). Interestingly, among familial patients, we found cases from SG families (vs. MG families: HR = 2.62, 95% CI: 1.59-4.31, P< 0.001) or with early onset (onset age <30 years) (vs. late onset: HR = 4.79, 95% CI: 3.16-7.26, P < 0.001) had higher lifetime ESRD risk. Furthermore, among sporadic patients, men had lower estimated glomerular filtration rate (eGFR), higher urine protein, higher Oxford T score, and higher risk for life span ESRD compared with women (male vs. female, 25% vs. 17%, P= 0.003) whereas these gender differences were not seen in familial patients. Conclusion: Familial IgAN cases had poorer renal outcomes and less gender differences compared with sporadic cases. These findings provide evidence that familial disease represent a distinct subtype of more progressive IgAN. Early diagnosis could improve the prognosis of cases with familial IgAN.

关键词： familial IgA nephropathy end-stage renal disease gender lifetime risk multiple-generation single-generation

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房车空调顶盖抗冰雹冲击动力响应研究

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家电科技 2023年第S01期 332-335页

作者：俞树文张永召赵帅金跃迁广东美的制冷设备有限公司广东佛山528311

为解决房车空调顶盖的抗冰雹冲击问题,建立了房车空调顶盖和冰雹的有限元模型,论证了使用有限元方法进行模拟冰雹冲击方法可行且结果可信,使用LS-DYNA软件,综合房车行驶速度、冰雹自由落体速度、冰雹和顶盖自身机械性能等因素影响,通过... 详细信息

为解决房车空调顶盖的抗冰雹冲击问题,建立了房车空调顶盖和冰雹的有限元模型,论证了使用有限元方法进行模拟冰雹冲击方法可行且结果可信,使用LS-DYNA软件,综合房车行驶速度、冰雹自由落体速度、冰雹和顶盖自身机械性能等因素影响,通过仿真分析研究,给出了不同冲击点位置下的响应,应力极大值出现在冲击点区域,两个冲击位置及两个车辆速度下冲击点最大应力为21.02 MPa,小于材料的屈服强度,不会产生塑性应变,房车空调顶盖结构安全,满足设计要求。

关键词：房车空调冰雹冲击动力响应仿真分析

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A novel weight-oriented graph convolutional network for aspect-based sentiment analysis

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JOURNAL OF SUPERCOMPUTING 2023年第1期79卷 947-972页

作者： yu, Bengong Zhang, shuwen Hefei Univ Technol Sch Management Tunxi Rd Hefei 230009 Anhui Peoples R China Hefei Univ Technol Key Lab Proc Optimizat & Intelligent Decis Making Tunxi Rd Hefei 230009 Anhui Peoples R China

Aspect-based sentiment analysis (ABSA) determines the sentiment polarity of specific aspects mentioned in the review. However, some existing ABSA studies have limitations, such as the model only detecting aspect-relevant semantics when using the attention mechanism and ignoring the aspect's long-distance dependence when introducing aspect position information. This study proposes a multiweight graph convolutional network (MWGCN) to address the above-mentioned limitations. MWGCN aims to design two weighting methods, multigrain dot-product weighting (MGDW) and the way (LCG), to create a local context weighted adjacency graph. The MGDW method retains the overall context semantics while emphasizing aspect-related features. Furthermore, the adjacency graph constructed by LCG emphasizes the importance of local context words and helps to avoid the aspect's long-distance dependence. A multilayer graph convolutional network (GCN) is also used to extract contextual features that integrate syntactic information and capture aspect features that focus on local context words. We performed several experiments on five datasets;the experimental results verify the MWGCN generalization and further prove that with MGDW and LCG, the features extracted using GCN help improve the MWGCN effect.

关键词： Aspect-based sentiment analysis Graph convolutional network MGDW LCG

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Facile preparation of TiO2/ZnO composite aerogel with excellent antibacterial activities

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MATERIALS LETTERS 2019年 234卷 253-256页

作者： Suo, Hao Peng, Changxin Jing, Feng yu, shuwen Cui, Sheng Shen, Xiaodong Nanjing Tech Univ Dept Mat Sci & Engn Nanjing 210009 Jiangsu Peoples R China Nanjing Tech Univ Jiangsu Collaborat Innovat Ctr Adv Inorgan Funct Nanjing 210009 Jiangsu Peoples R China

TiO2/ZnO composite aerogel is synthesized using Zn(NO3)(2)center dot H2O and titanium butoxide as precursors through sol-gel route combined with C2H5OH superfluid drying technique. The effects of the Zn2+/Ti4+ molar ratios and concentration on the antibacterial properties of TiO2/ZnO composite aerogels are investigated. The results show that the specific surface area is as high as 180 m(2)/g for the samples with the Zn2+/Ti4+ molar ratios of 1.5. The composite aerogels have the maximum inhibition zone of 23 nm and 19.5 nm for E. coll. and S. aureus, and the minimum inhibitory concentration for E. coll. and S. aureus of 100 ppm. (C) 2018 Elsevier B.V. All rights reserved.

关键词： TiO2 Nanocomposites Composite materials Sol-gel preparation Antibacteria

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清热养阴方联合常规西药治疗Hp阳性慢性萎缩性胃炎脾虚湿热证临床研究

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新中医 2021年第19期53卷 93-97页

作者：唐峰余舒文杭州市余杭区第一人民医院中医科浙江杭州311100

目的:观察清热养阴方联合常规西药治疗幽门螺杆菌(Hp)阳性慢性萎缩性胃炎脾虚湿热证的临床疗效。方法:选取80例Hp阳性慢性萎缩性胃炎脾虚湿热证患者,按随机数字表法分为观察组和对照组各40例。对照组给予常规西药治疗,观察组在对照组基... 详细信息

目的:观察清热养阴方联合常规西药治疗幽门螺杆菌(Hp)阳性慢性萎缩性胃炎脾虚湿热证的临床疗效。方法:选取80例Hp阳性慢性萎缩性胃炎脾虚湿热证患者,按随机数字表法分为观察组和对照组各40例。对照组给予常规西药治疗,观察组在对照组基础上给予清热养阴方治疗。比较2组临床疗效、胃黏膜病理变化、胃蛋白酶原及Hp转阴率。结果:观察组总有效率为92.50%,高于对照组75.00%,差异有统计学意义(P<0.05)。治疗前,2组中医证候积分比较,差异无统计学意义(P>0.05)。治疗后,2组中医证候积分均低于治疗前(P<0.05),观察组中医证候积分低于对照组(P<0.05)。治疗前,2组胃镜下征象、病理活检评分比较,差异无统计学意义(P>0.05)。治疗后,2组胃镜下征象、病理活检评分较治疗前降低(P<0.05);观察组胃镜下征象、病理活检评分低于对照组(P<0.05)。治疗前,2组胃蛋白酶原Ⅰ(PGⅠ)、胃蛋白酶原Ⅱ(PGⅡ)、PGⅠ/PGⅡ比较,差异无统计学意义(P>0.05)。治疗后,2组PGⅠ、PGⅠ/PGⅡ均高于治疗前,观察组PGⅠ、PGⅠ/PGⅡ高于对照组(P<0.05)。治疗后,观察组Hp转阴率为85.00%,高于对照组52.50%,差异有统计学意义(P<0.05)。结论:清热养阴方联合常规西药治疗Hp阳性慢性萎缩性胃炎脾虚湿热证疗效突出,可有效减轻患者临床症状,改善胃黏膜组织及胃蛋白酶原水平,提高Hp转阴率,且药物安全性高。

关键词：慢性萎缩性胃炎幽门螺杆菌脾虚湿热证清热养阴方胃蛋白酶原 Hp转阴率

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Programmed cell death factor 4-mediated hippocampal synaptic plasticity is involved in early life stress and susceptibility to depression

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BEHAVIOURAL BRAIN RESEARCH 2024年 468卷 115028页

作者： Cheng, Jiao yuan, Lin yu, shuwen Gu, Bing Luo, Qian Wang, Xixi Zhao, Yijing Gai, Chengcheng Li, Tingting Liu, Weiyang Wang, Zhen Liu, Dexiang Ho, Roger C. M. Ho, Cyrus S. H. Shandong Univ Cheeloo Coll Med Sch Basic Med Sci Dept Med Psychol & Ethics Jinan 250012 Shandong Peoples R China Shandong First Med Univ Affiliated Hosp 1 Dept Clin Lab Jinan 250012 Shandong Peoples R China Shandong Univ Cheeloo Coll Med Sch Basic Med Sci Dept Physiol Jinan 250012 Shandong Peoples R China Jinan Xicheng Expt High Sch Dept Pediat Surg Dezhou Rd Jinan 1999 Shandong Peoples R China Natl Univ Singapore Yong Loo Lin Sch Med Dept Psychol Med Singapore Singapore Natl Univ Singapore Inst Hlth Innovat & Technol iHealthtech Singapore Singapore

Early life stress (ELS) increases the risk of depression later in life. Programmed cell death factor 4 (PDCD4), an apoptosis-related molecule, extensively participates in tumorigenesis and inflammatory diseases. However, its involvement in a person's susceptibility to ELS-related depression is unknown. To examine the effects and underlying mechanisms of PDCD4 on ELS vulnerability, we used a "two-hit" stress mouse model: an intraperitoneal injection of lipopolysaccharide (LPS) into neonatal mice was performed on postnatal days 7-9 (P7-P9) and inescapable foot shock (IFS) administration in adolescent was used as a later-life challenge. Our study shows that compared with mice that were only exposed to the LPS or IFS, the "two-hit" stress mice developed more severe depression/anxiety-like behaviors and social disability. We detected the levels of PDCD4 in the hippocampus of adolescent mice and found that they were significantly increased in "two-hit" stress mice. The results of immunohistochemical staining and Sholl analysis showed that the number of microglia in the hippocampus of "two-hit" stress mice significantly increased, with morphological changes, shortened branches, and decreased numbers. However, knocking down PDCD4 can prevent the number and morphological changes of microglia induced by ELS. In addition, we confirmed through the Golgi staining and immunohistochemical staining results that knocking down PDCD4 can ameliorate ELS-induced synaptic plasticity damage. Mechanically, the knockdown of PDCD4 exerts neuroprotective effects, possibly via the mediation of BDNF/AKT/CREB signaling. Combined, these results suggest that PDCD4 may play an important role in the ELS-induced susceptibility to depression and, thus, may become a therapeutic target for depressive disorders.

关键词： Early -life stress PDCD4 Synaptic plasticity Depression susceptibility "two -hit" stress

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