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Carbon Energy 2024年第9期6卷 210-220页

作者： Zhi Cai Mingyuan Xu Yanhong Li Xinyan Zhou kexin yin Lidong Li Binbin Jia Lin Guo Hewei Zhao School of Chemistry Beijing Advanced Innovation Center for Biomedical EngineeringBeihang UniversityBeijingChina School of Physics Beihang UniversityBeijingChina Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials College of Materials and Chemical EngineeringChina Three Gorges UniversityYichangHubeiChina

The dynamic surface self-reconstruction behavior in local structure correlates with oxygen evolution reaction(OER)performance,which has become an effective strategy for constructing the catalytic active ***,it remains a challenge to understand the mechanisms of reconstruction and to accomplish it fast and ***,we reported a photo-promoted rapid reconstruction(PRR)process on Ag nanoparticle-loaded amorphous Ni-Fe hydroxide nanosheets on carbon cloth for enhanced *** photogenerated holes generated by Ag in conjunction with the anodic potential contributed to a thorough reconstruction of the amorphous *** valence state of unsaturated coordinated Fe atoms,which serve as active sites,is significantly increased,while the corresponding crystalline substrate shows little *** different structural evolutions of amorphous and crystalline substrates during reconstruction lead to diverse pathways of *** PRR utilizing loaded noble metal nanoparticles can accelerate the generation of active species in the substrate and increase the electrical conductivity,which provides a new inspiration to develop efficient catalysts via reconstruction strategies.

关键词： Ag amorphous Ni-Fe hydroxide OER photo-promoted rapid reconstruction

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过表达胡杨PePKS5提高拟南芥耐盐性

北京林业大学学报 2024年第2期46卷 62-74页

作者：温馨殷可欣马思圆张小萌赵楠周晓阳赵瑞陈少良北京林业大学生物科学与技术学院林木、花卉遗传育种教育部重点实验室北京100083 北京林业大学实验室与设备管理处北京100083

【目的】盐胁迫是影响植物生长发育的不利环境因子。蛋白激酶PKS5作为植物盐超敏感信号转导途径的重要组分,在植物响应盐胁迫过程中具有重要调节功能。本文旨在生理水平和分子水平上,探究胡杨PePKS5基因在植物耐受盐胁迫过程中的调节作... 详细信息

【目的】盐胁迫是影响植物生长发育的不利环境因子。蛋白激酶PKS5作为植物盐超敏感信号转导途径的重要组分,在植物响应盐胁迫过程中具有重要调节功能。本文旨在生理水平和分子水平上,探究胡杨PePKS5基因在植物耐受盐胁迫过程中的调节作用。【方法】克隆胡杨PePKS5基因,并在拟南芥中过表达,获得T3代转基因拟南芥纯合体。观察盐胁迫下转基因拟南芥株系的耐盐表型,测定其过氧化物酶(POD)、过氧化氢酶(CAT)和超氧化物歧化酶活性及盐胁迫响应基因的表达量。利用非损伤微测技术测定转基因拟南芥株系根尖Na^(+)、K^(+)动态离子流,利用激光共聚焦显微镜观测转基因拟南芥株系根尖Na^(+)和H_(2)O_(2)含量。测定盐处理后转基因拟南芥土培幼苗的叶绿素荧光参数、光合参数等生理指标,揭示PePKS5基因在盐胁迫下对拟南芥的生理调节作用。构建亚细胞定位载体,通过瞬时转化烟草,对PePKS5蛋白进行亚细胞定位观测。【结果】(1)PePKS5基因的CDS序列编码417个氨基酸,PePKS5氨基酸序列与毛白杨PtPKS5相似度最高,并且亲缘关系最近。(2)PePKS5定位于细胞质和细胞核中。(3)NaCl处理6 h后,胡杨叶片PePKS5基因表达量上调,72 h后逐渐恢复至正常水平。(4)盐胁迫下过表达PePKS5基因的拟南芥株系(PePKS5-OE10和PePKS5-OE15)的生存率和根长均明显高于野生型(WT)和转空载体(VC)株系。(5)与WT和VC株系相比,PePKS5-OE10和PePKS5-OE15株系的POD和CAT活性增强,APX1和CAT2基因的表达量均升高。(6)盐胁迫下PePKS5-OE10和PePKS5-OE15株系的Na^(+)外排和K^(+)的内流明显高于WT和VC株系,并且在根尖中积累的Na^(+)浓度和H_(2)O_(2)浓度明显低于WT和VC株系。(7)盐胁迫下PePKS5-OE10和PePKS5-OE15株系的叶绿素相对含量、PSⅡ最大光量子效率、实际光合量子产量和相对电子传递速率均高于WT和VC株系。(8)盐胁迫下PePKS5-OE10和PePKS5-OE15的净光合速率高于WT和VC株系,而胞间CO_(2)浓度、气孔导度和蒸腾速率均低于WT和VC株系。【结论】过表达胡杨PePKS5基因能够增强拟南芥对Na^(+)的外排能力,维持植物活性氧的平衡状态,以及保持相对稳定的光合作用能力,从而提高拟南芥的耐盐能力。

关键词：胡杨蛋白激酶盐胁迫 PKS5 离子平衡活性氧

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单硝酸异山梨酯缓释制剂的研究进展

当代化工研究 2024年第12期 5-7页

作者：周成林余春梅尹可欣蒋猛西南药业股份有限公司重庆400038

单硝酸异山梨酯主要用于冠心病、心绞痛等的治疗,需长期用药。普通制剂服用频繁,容易造成漏服,从而引起血药浓度波动,故临床上多用缓释制剂。其缓释制剂主要有缓释片(凝胶骨架、渗透泵片、微丸缓释片等)、缓释微丸胶囊、微囊等。由于该... 详细信息

单硝酸异山梨酯主要用于冠心病、心绞痛等的治疗,需长期用药。普通制剂服用频繁,容易造成漏服,从而引起血药浓度波动,故临床上多用缓释制剂。其缓释制剂主要有缓释片(凝胶骨架、渗透泵片、微丸缓释片等)、缓释微丸胶囊、微囊等。由于该药有良好的市场前景,其缓释制剂日益受到广泛的关注。现对单硝酸异山梨酯缓释制剂的研究进展进行综述。

关键词：单硝酸异山梨酯缓释制剂

Bifunctional interstitial phosphorous doping strategy boosts platinum-zinc alloy for efficient ammonia oxidation reaction and hydrogen evolution reaction

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Nano Research 2024年第3期17卷 1182-1189页

作者： Tianqi Yu kexin Tan Jia Wu Yongjin Zou Shibin yin Guangxi Key Laboratory of Electrochemical Energy Materials School of Chemistry and Chemical EngineeringGuangxi UniversityNanning 530004China Guangxi Key Laboratory of Information Materials Guilin University of Electronic TechnologyGuilin 541004China

It is still a lack of bifunctional catalysts for ammonia oxidation reaction(AOR)and hydrogen evolution reaction(HER)due to their different reaction *** this work,P is doped into PtZn alloy by calcination with NaH_(2)PO_(2) as P source to induce the lattice tensile strain of Pt and the electronic interaction between P and Zn,which optimizes the AOR and HER activity *** sample with the optimal P content can drive the AOR peak current density of 293.6 mA·mgPt^(-1),which is almost 2.7 times of *** HER,the overpotential at^(-1)0 mA·cm^(-2) is only 23 mV with Tafel slope of 34.1 mV·dec^(-1).Furthermore,only 0.59 V is needed to obtain 50 mA·mgPt^(-1) for ammonia electrolysis under a two-electrode ***,this work shows an ingenious method to design bifunctional catalysts for ammonia electrolysis.

关键词： PtZn alloy phosphorous doping ammonia oxidation reaction hydrogen evolution reaction bifunctional catalyst

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阿德福韦酯片的制备研究

山东化工 2024年第12期53卷 13-14,17页

作者：陈仲祥周成林王书兰尹可欣李禄年熊莉平重庆工信职业学院重庆401233 西南药业股份有限公司重庆400038 太极集团有限公司重庆401120

目的:优化阿德福韦酯片的处方。方法:采用均匀设计法,以填充剂比为因素A,崩解剂为因素B,润滑剂为因素C,以溶出度相似因子作为考察指标。结果:最优化的条件为填充剂比(乳糖、预胶化淀粉比为2.6),崩解剂(5.2%交联聚维酮),润滑剂(0.5%硬脂... 详细信息

目的:优化阿德福韦酯片的处方。方法:采用均匀设计法,以填充剂比为因素A,崩解剂为因素B,润滑剂为因素C,以溶出度相似因子作为考察指标。结果:最优化的条件为填充剂比(乳糖、预胶化淀粉比为2.6),崩解剂(5.2%交联聚维酮),润滑剂(0.5%硬脂酸钙),3批验证试验的f_(2)均大于50,与参比制剂溶出行为相似,平均累积溶出度90%以上。结论:该处方设计合理,易于操作,体外溶出度良好。

关键词：阿德福韦酯片均匀设计相似因子

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高效液相色谱法测定盐酸羟考酮缓释片中盐酸羟考酮含量

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中国药业 2024年第3期33卷 12-15页

作者：马睿曾令高罗娟孙怀敬程浩男尹可欣林美龄熊莉平西南药业股份有限公司重庆400038 重庆市食品药品检验检测研究院·国家药品监督管理局麻醉精神药品质量监测重点实验室重庆401121

目的建立测定盐酸羟考酮缓释片中盐酸羟考酮含量的高效液相色谱法。方法色谱柱为Agilent Eclipes XDB-C_(18)柱(150 mm×4.6 mm,5μm),流动相为1.1 g/L庚烷磺酸钠溶液(pH 2.0)-乙腈-甲醇(750∶95∶155,V/V/V),流速为1.2 mL/min,检测波长... 详细信息

目的建立测定盐酸羟考酮缓释片中盐酸羟考酮含量的高效液相色谱法。方法色谱柱为Agilent Eclipes XDB-C_(18)柱(150 mm×4.6 mm,5μm),流动相为1.1 g/L庚烷磺酸钠溶液(pH 2.0)-乙腈-甲醇(750∶95∶155,V/V/V),流速为1.2 mL/min,检测波长为230 nm,柱温为40℃,进样量为20μL。结果羟考酮的质量浓度在0.047~189.920μg/mL范围内与峰面积线性关系良好(R^(2)=1.0000,n=6);定量限为50.75 ng/mL;精密度、重复性、稳定性试验结果的RSD均小于2.0%;平均回收率为99.72%,RSD为0.93%(n=9)。样品中盐酸羟考酮的含量分别为100.03%,100.82%,100.11%(n=4)。结论该方法专属性强、耐用性好、回收率高,可用于盐酸羟考酮缓释片中盐酸羟考酮的含量测定。

关键词：高效液相色谱法盐酸羟考酮缓释片盐酸羟考酮含量测定

The Exchange Attack and the Mixture Differential Attack Revisited: From the Perspective of Automatic Evaluation

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Chinese Journal of Electronics 2024年第1期33卷 19-29页

作者： kexin QIAO Zhiyu ZHANG Zhongfeng NIU Liehuang ZHU School of Cyberspace Science and Technology Beijing Institute of Technology State Key Laboratory of Cryptology Institute of Information Engineering Chinese Academy of Sciences School of Cryptography University of Chinese Academy of Sciences

Recent results show that the differential properties within quadruples boom as a new inspiration in cryptanalysis of Advanced Encryption Standard(AES)-like constructions. These methods include the exchange attack proposed in Asiacrypt’19, the mixture differential attack proposed in To SC’18, etc., where the essential properties are obtained by manually scrutinizing the structures of the AES-like constructions. This paper presents a novel framework and an automatic tool based on mixed integer linear programming to search for mixture differential distinguishers for general constructions. This framework considers what equality patterns among quadruples can make a distinguisher and traces how the patterns propagate through cipher components with accurate probability *** this tool, a 5-round AES distinguishing attack with lower complexity and more 6-round distinguishing attacks in the chosen plaintext scenarios are deduced. We prove that no exchange-type or mixture differential distinguisher exists for 7 and above rounds AES if the details of the Sbox and Mix Columns matrix are not taken into account.

关键词： Ciphers Estimation Encryption Mixed integer linear programming Complexity theory Standards

Inorganic ionic polymerization:From biomineralization to materials manufacturing

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Nano Research 2024年第2期17卷 550-569页

作者： Yanhua Sang kexin Qin Ruikang Tang Zhaoming Liu Department of Chemistry Zhejiang UniversityHangzhou 310058China

Biomineralization process regulates the growth of inorganic minerals by complex molecules,proteins,and cells,endowing bio-materials with marvels structures and excellent *** intricate structures and compositions found in biominerals have inspired scientists to design and synthesize numerous artificial biomimetic *** methodology for controlling the formation of inorganics plays a pivotal role in achieving biomimetic structures and ***,the current approach predominantly relies on the classical nucleation theory,which hinders the precise preparation of inorganic materials by replicating the biomineralization ***,the development of“inorganic ionic polymerization”strategy has enabled us to regulate the arrangement of inorganic ions from solution to solid phase,which establishes an artificial way to produce inorganic materials analogous to the biomineralization *** on inorganic ionic polymerization,a series of achievements have been realized for the biomimetic preparation,including moldable construction of inorganic materials,hard tissue regeneration,and high-performance biomimetic ***,the utilization of inorganic ionic polymerization has also facilitated the production of numerous advanced materials,including novel structures that exceed the current knowledge of materials *** inorganic ionic polymerization system provides new artificial strategies and methodologies for the controllable synthesis of inorganics,which mimics the biomineralization process,paving the way for the future development of more high-performance materials.

关键词： biomineralization inorganic ionic polymerization biomimetic materials crystal growth synthetic methodology

Hydrochemical insights on the signatures and genesis of water resources in a high-altitude city on the Qinghai-Xizang Plateau, South-west China

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Frontiers of Environmental Science & Engineering 2024年第7期18卷 123-140页

作者： Jiutan Liu kexin Lou Zongjun Gao Menghan Tan College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China

Water resources have crucial implications for the steady development of the urban social *** study investigated the hydrochemical signatures and genesis of water resources in the urban area of Lhasa City(UALC).To this end,several analyses,such as ion ratio analysis and correlation analysis,were performed by comprehensively applying mathematical statistics and integrated hydrochemical *** results show relatively low concentrations of major ions in the groundwater and surface water(GSW)of the *** primary anions and cations are HCO3-and Ca2+,reflecting the HCOg-Ca water ***,groundwater exhibits higher concentrations of key chemical components compared to surface *** are weakly alkaline,with pH values of 7.78 and 7.61,respectively,and they have low salinity with average concentrations of total dissolved solids being 190.74 and 112.17 mg/L,*** inputs have minimal influence on the hydrochemical features of GSw,whereas rock weathering is the dominant controlling ***,cation *** a significant *** influencing their hydrochemical *** to the isotope analysis(H and 180),the primary source of recharge for GSW is atmospheric precipitation,with some input from melted ice and ***,GSW samples from the UALC show relatively similar 2H and 18O isotopic compositions,indicating the existence of a discernible hydraulic connection linking the two water *** research findings can serve as a valuable scientific reference and foundation for the sustainable development,effective utilization,and proper safeguarding of regional water resources in high-altitude areas.

关键词： Groundwater and surface water Hydrochemical features Genesis mechanism Water quality Urban area of Lhasa City

Neural-network-based fully distributed formation control for nonlinear multi-agent systems with event-triggered communication

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Science China(Technological Sciences) 2024年第1期67卷 209-220页

作者： ZHU GuoLiang LIU kexin GU HaiBo LÜJinHu School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China Zhongguancun Laboratory Beijing 100094China

This paper investigates the consensus-based formation control problem for multi-agent systems with unknown nonlinear *** achieve the desired formation,we propose two formation controllers to achieve the desired formation,one based on system states and the other on system *** proposed controllers utilize adaptive gains to avoid global information and neural networks to estimate and compensate for *** proposed event-triggered schemes avoid continuous communication among agents and exclude the Zeno *** analysis reveals that formation errors are bounded,and numerical simulations are used to validate the effectiveness of the proposed approaches.

关键词： formation control neural network adaptive control event-triggered communication multi-agent systems