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N,N-dimethylformamide tailors solvent effect to boost Zn anode reversibility in aqueous electrolyte

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National Science Review 2022年第10期9卷 147-157页

作者： Yilin Ma Qiu Zhang luojia liu Yixin Li Haixia Li Zhenhua Yan Jun Chen Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Renewable Energy Conversion and Storage Center (RECAST) College of Chemistry Nankai University

Rechargeable aqueous Zn batteries are considered as promising energy-storage devices because of their high capacity,environmental friendliness and low ***,the hydrogen evolution reaction and growth of dendritic Zn in common aqueous electrolytes severely restrict the application of Zn ***,we develop a simple strategy to suppress side reactions and boost the reversibility of the Zn *** introducing 30%（volume fractions） N,N-dimethylformamide（DMF） to the 2 M Zn（CF3SO3）2-H2O electrolyte（ZHD30）,the preferential hydrogen-bonding effect between DMF and H2O effectively reduces the water activity and hinders deprotonation of the *** ZHD30 electrolyte improves the Zn plating/stripping coulombic efficiency from～95.3% to～99.4% and enhances the cycles from 65 to *** Zn-polyaniline full battery employing the ZHD30 ele ctrolyte can operate over a wide temperature range from-40℃ to+25℃ and deliver capacities of 161.6,127.4 and 65.8 mAh g-1at 25,-20 and-40℃,*** work provides insights into the role of tuning solvent effects in designing low-cost and effective aqueous electrolytes.

关键词： aqueous electrolyte Zn reversibility hydrogen bond solvent effect rechargeable Zn battery

CD9 negatively regulates collective electrotaxis of the epidermal monolayer by controlling and coordinating the polarization of leader cells

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Burns & Trauma 2023年第1期11卷 361-374页

作者： Xiaoqiang liu Jinrui Yang Meng Kong Min Jiang luojia liu Jinghong Zhang Ying Chen Xu Chen Ze Zhang Chao Wu Xupin Jiang Jie liu Jiaping Zhang Department of Plastic Surgery State Key Laboratory of TraumaBurns and Combined InjurySouthwest HospitalThird Military Medical University(Army Medical University)29 Gaotan Yan StreetShapingba400038 ChongqingChina

Background:Endogenous electric fields(EFs)play an essential role in guiding the coordinated collective migration of epidermal cells to the wound centre during wound *** polarization of leadercells is essential for collective migration,the signal mechanisms responsible for the EF-induced polarization of leader cells under electrotactic collective migration remain *** study aims to determine how the leader cells are polarized and coordinated during EF-guided collective migration of epidermal cell ***:Collective migration of the human epidermal monolayer(human immortalized ker-atinocytes HaCaT)under EFs was observed via time-lapse *** involvement of tetraspanin-29(CD9)in EF-induced fibrous actin(F-actin)polarization of leader cells as well as electrotactic migration of the epidermal monolayer was evaluated by genetic ***,rescue and co-culture experiments were conducted to explore the downstream signalling of ***:EFs guided the coordinated collective migration of the epithelial monolayer to the anode,with dynamic formation of pseudopodia in leader cells at the front edge of the monolayer along the direction of migration.F-actin polarization,as expected,played an essential role in pseudopod formation in leader cells under *** confocal microscopy,we found that CD9 was colocalized with F-actin on the cell surface and was particularly downregulated in leader cells by ***,genetic overexpression of CD9 abolished EF-induced F-actin polarization in leader cells as well as collective migration in the epidermal ***,CD9 determined the polarization of F-actin in leader cells by downregulating a disintegrin and metalloprotease 17/heparin-binding epidermal growth factor-like growth factor/epidermal growth factor receptor(ADAM17/HB-EGF/EGFR)*** abolished polarization of leader cells due to CD9 overex-pression could be restored in a co-culture monolayer where normal c

关键词： CD9 Electric fields Collective migration Wound healing F-actin polarization leader cells

点阵CO_(2)激光联合其他非手术方式治疗痤疮瘢痕安全性的网状Meta分析

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中国美容整形外科杂志 2024年第8期35卷 465-470,I0006,I0007页

作者：蒋敏夏录凡张警泓陈煦刘骆家张泽刘小强武潮江旭品陈颖张家平陆军军医大学(第三军医大学)第一附属医院整形外科(创伤与化学中毒国家重点实验室) 重庆400038

目的系统评价点阵CO_(2)激光联合其他非手术方式治疗痤疮瘢痕的安全性.方法陆军军医大学(第三军医大学)第一附属医院整形外科通过检索Pubmed、Embase、Cochrane Library、Wanfang Data和CNKI数据库,搜索有关点阵CO_(2)激光和点阵CO_(2)... 详细信息

目的系统评价点阵CO_(2)激光联合其他非手术方式治疗痤疮瘢痕的安全性.方法陆军军医大学(第三军医大学)第一附属医院整形外科通过检索Pubmed、Embase、Cochrane Library、Wanfang Data和CNKI数据库,搜索有关点阵CO_(2)激光和点阵CO_(2)激光联合其他非手术方式治疗痤疮瘢痕安全性的随机对照试验(RCT),检索时限均为建库至2023年6月.由2名研究者独立筛选文献、提取资料并评价纳入研究的偏倚风险后,采用Stata 16.0软件进行网状Meta分析.结果共纳入55个RCT,包括4779例患者.网状Meta分析结果显示,在色素沉着发生率方面,最佳累积概率排序为:点阵CO_(2)激光+富血小板血浆(platelet-rich plasma,PRP;79.9%)>点阵CO_(2)激光+表皮生长因子凝胶(70.2%)>点阵CO_(2)激光+硅酮凝胶(64.3%)>点阵CO_(2)激光+胶原贴敷料(58.0%)>点阵CO_(2)激光+透明质酸敷料(56.6%)>点阵CO_(2)激光+重组碱性成纤维细胞生长因子(55.6%)>点阵CO_(2)激光+积雪苷霜(51.8%)>点阵CO_(2)激光+果酸(38.8%)>点阵CO_(2)激光+微针(23.4%)>点阵CO_(2)激光(1.3%).在误工时间方面,最佳累积概率排序为:点阵CO_(2)激光+PRP(97.0%)>点阵CO_(2)激光+表皮生长因子凝胶(72.8%)>点阵CO_(2)激光+硅酮凝胶(68.7%)>点阵CO_(2)激光+积雪苷霜(40.7%)>点阵CO_(2)激光+胶原贴敷料(20.7%)>点阵CO_(2)激光(0).在水肿发生率方面,最佳累积概率排序为:点阵CO_(2)激光+PRP(73.5%)>点阵CO_(2)激光+表皮生长因子凝胶(70.4%)>点阵CO_(2)激光+胶原贴敷料(68.8%)>点阵CO_(2)激光+透明质酸敷料(63.8%)>点阵CO_(2)激光+果酸(51.0%)>点阵CO_(2)激光+硅酮凝胶(36.0%)>点阵CO_(2)激光(19.9%)>点阵CO_(2)激光+重组碱性成纤维细胞生长因子(16.4%).在感染发生率方面,最佳累积概率排序为:点阵CO_(2)激光+PRP(75.6%)>点阵CO_(2)激光+表皮生长因子凝胶(71.7%)>点阵CO_(2)激光(33.3%)>点阵CO_(2)激光+微针(19.4%).结论点阵CO_(2)激光联合PRP可能是点阵CO_(2)激光联合其他非手术方式治疗痤疮瘢痕中最安全的治疗方式,可以有效降低单用点阵CO_(2)激光治疗痤疮瘢痕过程中的色素沉着发生率、误工时间、水肿和感染发生率,增加患者的依从性.

关键词：痤疮瘢痕点阵CO_(2)激光安全性网状Meta分析

An improved GNSS ambiguity best integer equivariant estimation method with Laplacian distribution for urban low-cost RTK positioning

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Satellite Navigation 2024年第1期5卷 109-124页

作者： Ying liu Wanke liu Xiaohong Zhang Yantao Liang Xianlu Tao Liye Ma School of Geodesy and Geomatics Hubei Luojia LaboratoryWuhan University129 Luoyu RoadWuhan430079HubeiChina Chinese Antarctic Center of Surveying and Mapping Wuhan University129 Luoyu RoadWuhan430079HubeiChina School of Instrument Science and Engineering Southeast UniversityNanjingJiangsuChina The 54 Research Institute of China Electronics Technology Group CorporationShijiazhuang050081HebeiChina State Key Laboratory of Satellite Navigation System and Equipment Technology Shijiazhuang050081HebeiChina

The integer least squares(ILS)estimation is commonly used for carrier phase ambiguity resolution(AR).More recently,the best integer equivariant(BIE)estimation has also attracted an attention for complex application scenarios,which exhibits higher reliability by a weighted fusion of integer ***,traditional BIE estimation with Gaussian distribution(GBIE)faces challenges in fully utilizing the advantages of BIE for urban low-cost positioning,mainly due to the presence of outliers and unmodeled *** this end,an improved BIE estimation method with Laplacian distribution(LBIE)is proposed,and several key issues are discussed,including the weight function of LBIE,determination of the candidates included based on the OIA test,and derivation of the variance of LBIE solutions for reliability *** results show that the proposed LBIE method has the positioning accuracy similar to the BIE using multivariate t-distribution(TBIE),and significantly outperforms the ILS-PAR and GBIE *** an urban expressway test with a Huawei Mate40 smartphone,the LBIE method has positioning errors of less than 0.5 m in three directions and obtains over 50%improvements compared to the ILS-PAR and GBIE *** an urban canyon test with a low-cost receiver STA8100 produced by STMicroelectronics,the positioning accuracy of LBIE in three directions is 0.112 m,0.107 m,and 0.252 m,respectively,with improvements of 17.6%,27.2%,and 26.1%compared to GBIE,and 23.3%,28.2%,and 30.6%compared to ***,its computational time increases by 30–40%compared to ILS-PAR and is approximately half of that using TBIE.

关键词： Ambiguity resolution Best integer equivariant estimation Laplacian distribution Urban environments Low-cost GNSS receivers Real-time kinematic

稚鳖养殖水体中异养细菌及自养细菌的初步研究

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同济医科大学学报 2000年第5期29卷 397-399页

作者：运珞珈李谷刘志伟唐非刘红艳同济医科大学环境医学研究所武汉4300302 中国水产科学研究院长江水产研究所荆州434020

对 D湖水产养殖场 ,室内养鳖池水体和底泥中的异养细菌及自养细菌种类、数量进行了初步测定分析。结果表明水中异养细菌总数为 5 .3× 10 5 ～ 17.0× 10 5 CFU / ml,底泥中异养细菌总数为 1.6 6× 10 6～ 2 .2 4× 10 6CFU / m l(湿重 ... 详细信息

对 D湖水产养殖场 ,室内养鳖池水体和底泥中的异养细菌及自养细菌种类、数量进行了初步测定分析。结果表明水中异养细菌总数为 5 .3× 10 5 ～ 17.0× 10 5 CFU / ml,底泥中异养细菌总数为 1.6 6× 10 6～ 2 .2 4× 10 6CFU / m l(湿重 )。三种自养细菌的总数 (用最大可能数 MPN法测得 )分别为 8.5 MPN / ml,0 .4MPN / ml,2 .45 MPN/ ml。自养细菌的数量明显低于异养细菌。试验稚鳖池水中共分离出 2 1株异养细菌 ,其中优势菌为假单胞杆菌属细菌(Pseudom onas) ;底泥中共分离出 2 5株异养细菌 ,其中优势菌为芽胞杆菌属细菌 (Bacillus) ,微球菌属细菌(Micrococcus)假单胞菌属细菌 (Pseudomonas) ,三种自养细菌分别为具有氧化硫化氢、元素硫或硫化亚铁的硫细菌 ;具有氧化氨为亚硝酸的亚硝化细菌和能将亚硝酸进一步转化成硝酸的硝化细菌。测定稚鳖养殖池水体的化学指标其中BOD5 ,NH3 - N,大大超过渔业水质标准及参考标准。 S2 -指标虽未超标但也接近标准的上限值。

关键词：稚鳖养殖水体异养细菌自养细菌水体污染

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数字专网的通信终端与加密组件测试系统设计

计算机测量与控制 2024年第8期32卷 78-85页

作者：孟珞珈郭元兴刘皓中国电子科技集团公司第30研究所成都610041

为提高数字专网的通信终端与配套加密组件测试效率,降低实装测试环境的构建、运维及人力成本,开展了基于半实物仿真的测试系统设计;对通信终端与加密组件的测试需求进行了分析,提出并实现了一种模拟数字专网的通信建链流程和加密通信业... 详细信息

为提高数字专网的通信终端与配套加密组件测试效率,降低实装测试环境的构建、运维及人力成本,开展了基于半实物仿真的测试系统设计;对通信终端与加密组件的测试需求进行了分析,提出并实现了一种模拟数字专网的通信建链流程和加密通信业务流程的方法;采用了通用AXIe(仪器与测试高级电信计算架构的扩展)测试平台与扩展测试仪器的架构进行系统设计,实现与不同测试对象的物理接口适配、信号调理以及报文数据交互控制,为通信终端及加密组件的加密业务成功率测试、语音质量评测以及远供工作电流测量提供自动化测试技术手段;经验证,测试系统通信链路时延<100 ns,可为通信终端提供良好的语音质量评测环境,PESQ(感知语音质量评测模型)测试≥4.20,可支持加密业务成功率指标≥99.9%的无人值守测试。

关键词：通信终端与加密组件测试系统半实物仿真模拟数字专网 AXIe平台

Estimation of free core nutation parameters and availability of computing options

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Geodesy and Geodynamics 2024年第1期15卷 61-74页

作者： Weiwei Yang Xiaoming Cui Jianqiao Xu Qingchao liu Ming Qin State Key Laboratory of Geodesy and Earth's Dynamics Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430077China University of Chinese Academy of Sciences Beijing 100049China Hubei luojia Laboratory Wuhan 430079China

The Earth’s Free Core Nutation(FCN) causes Earth tides and forced nutation with frequencies close to the FCN that exhibit resonance ***-precision superconducting gravimeter(SG) and very long baseline interferometry(VLBI) provide good observation techniques for detecting the FCN ***,some choices in data processing and solution procedures increase the uncertainty of the FCN *** this study,we analyzed the differences and the effectiveness of weight function and ocean tide corrections in the FCN parameter detection using synthetic data,SG data from thirty-one stations,and the 10 celestial pole offset(CPO) *** results show that significant discrepancies are caused by different computing options for a single SG *** stacking method,which results in a variation of0.24-5 sidereal days(SDs) in the FCN period(T) and 10^(3)-10^(4) in the quality factor(Q) due to the selection of the weighting function and the ocean tide model(OTM),can effectively suppress this *** statistical analysis results of synthetic data shows that although different weight choices,while adjusting the proportion of diurnal tidal waves involved,do not significantly improve the accuracy of fitted FCN parameters from gravity *** study evaluated a series of OTMs using the loading correction *** fitting of FCN parameters can be improved by selecting the mean of appropriate OTMs based on the evaluation *** the estimation of the FCN parameters based on the forced nutation,it was found that the weight function P_(1) is more suitable than others,and different CPO series(after 2009) resulted in a difference of 0.4 SDs in the T and of 103 in the *** estimated the FCN parameters for SG(T=430.4±1.5 SDs and Q=1.52×10^(4)±2.5×10^(3)) and for VLBI(T=429.8±0.7 SDs,Q=1.88×10^(4)±2.1×10^(3)).

关键词： Free core nutation Superconducting gravimeter Very long baseline interferometry Weight function Ocean tide model

丘陵山地拖拉机调平与防翻关键技术研究现状与发展趋势

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智慧农业（中英文） 2024年第3期6卷 1-16页

作者：牟孝栋杨福增段罗佳刘志杰宋卓颖李宗霖管寿青西北农林科技大学机械与电子工程学院陕西杨凌712100 农业农村部北方农业装备科学观测实验站陕西杨凌712100 潍柴雷沃智慧农业科技股份有限公司山东潍坊261000

[目的/意义]丘陵山区的机械化、智能化是未来农机行业研究和发展的热点。中国丘陵山区耕地面积占比超过50%,且面临坡陡路窄、地块碎小、地形地貌复杂等多种环境因素制约,各生产环节存在“无机可用,无好机用”的现实问题,并且缺乏适合丘... 详细信息

[目的/意义]丘陵山区的机械化、智能化是未来农机行业研究和发展的热点。中国丘陵山区耕地面积占比超过50%,且面临坡陡路窄、地块碎小、地形地貌复杂等多种环境因素制约,各生产环节存在“无机可用,无好机用”的现实问题,并且缺乏适合丘陵山区大坡度农机装备研发的理论支撑。[进展]综述了国内外丘陵山地拖拉机调平及防翻系统的研究现状。其中拖拉机车身调平技术平行四杆与液压差高式结构简单,折腰扭腰式更适合连续起伏的崎岖路面,重心可调与全向调平式坡地牵引性与适应性均较好;驾驶室及座椅调平技术基于角度传感器自适应控制,关键在于缓解驾驶疲劳提高舒适度;车身与农具姿态协同控制技术大都采用PID控制技术实现协同控制,但缺乏作业效果反馈机制;拖拉机防翻保护装置与预警技术在防翻保护架的基础上,通过环境模拟感知提前预判翻车危险信号并及时反馈。[结论/展望]未来丘陵山地拖拉机调平、防翻预警及无人化、自动化技术的发展方向:1)结构优化、灵敏度高、稳定性好的山地拖拉机调平系统研究;2)坡地适应性好的农机具仿形系统研究;3)环境感知、自动干涉的防翻预警技术研究;4)农机精准导航技术、智能化监测技术和农机作业远程调度与管理技术研究;5)坡地纵向稳定性理论研究。以期为研发符合中国丘陵山地复杂作业环境的高可靠性、高安全性山地拖拉机提供借鉴参考。

关键词：丘陵山地拖拉机调平悬挂机具调平防翻系统侧翻

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Aggregation-induced emission:recent applications in infectious diseases

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Science China Chemistry 2023年第11期66卷 2986-3005页

作者： Meijia Gu luojia Chen Rui Hu Qingrong Chen Jianbo liu Lianrong Wang Shi Chen Department of Gastroenterology Ministry of Education Key Laboratory of Combinatorial Biosynthesis and Drug DiscoveryTaiKang Center for Life and Medical SciencesZhongnan Hospital of Wuhan UniversitySchool of Pharmaceutical SciencesWuhan UniversityWuhan 430071China Department of Respiratory Diseases The Research and Application Center of Precision MedicineThe Second Affiliated Hospital of Zhengzhou UniversityZhengzhou UniversityZhengzhou 450014China

Infectious diseases are caused by various pathogenic microorganisms that break through the human immune barrier,then reproduce and mutate in human cells,thus causing invasive *** many recent scientific and technological advances in fields,such as genetics,chemistry,and protein engineering,and in the efficiency of drug research and development,the discovery and development of novel and potent anti-infectious disease agents have still lagged *** is often challenging to keep up with the emergence and mutation of new pathogenic microorganisms,which leads to the emergence of more resistant pathogenic *** emergence of aggregation-induced emission(AIE)fluorogens with high luminescence yields and high reactive oxygen species(ROS)production rates provides scientists with a new strategy for the prevention and treatment of pathogenic *** to their advantages in terms of brightness,biocompatibility,photostability,and positive correlation,AIE fluorogens(AIEgens)have great potential in biological *** review presents a systemic overview of recent progress in AIEgen-based platforms for the photodynamic therapy(PDT)of infectious diseases,which has emerged as a promising noninvasive alternative to traditional antibiotics for combating the drug resistance of infectious *** review is mainly divided into two parts according to the type of pathogenic microorganisms:a section on bacterial and fungal infections(e.g.,eye,skin,oral cavity,and blood infections),and a section on viral *** future prospects and potential clinical applications of AIEgens are also discussed in *** addition to motivating further interest in this field,this review is intended to promote ideas for the further exploration of AIEgens and the development of more advanced AIEgens in a broader range of biomedical and clinical applications.

关键词： aggregation-induced emission infectious diseases photosensitizers photodynamic therapy pathogenic microorganisms