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The Crop Journal 2021年第2期9卷 465-475页

作者： zhenxing zhu Dan Li Ling Cong Xiaochun Lu Crops Molecular Improving Lab Liaoning Academy of Agricultural SciencesShenyang 110161LiaoningChina

Nitrogen(N),phosphorus(P),and potassium(K)are important for plant growth and ***(miRNAs)play important roles in regulating plant response to nutrient(N,P,and K)*** miRNAs have been identified under nutrient deficiency conditions in many plant ***,the manner in which miRNAs regulate the interaction between NPK signaling pathways under multiple nutrient deficiency remains largely *** systematically compared and identified microRNAs involved in both single and triple NPK nutrient deficiency *** identified 32 shoot and 17 root miRNAs differentially expressed under potassium *** NP starvation-associated miRNAs including miR169s and miR399s,were also regulated by K *** identified miRNAs including miR5565c,miR5564,and miR1432 have not previously been associated with respectively N,P,and K deficiency(−N,−P,and−K).Expression correlation analysis between miRNAs and their predicted targets showed that miR169,miR172,and miR160 displayed expression trends exactly opposite to those of their corresponding predicted *** 550 predicted novel miRNAs,novel_mir_42 was upregulated in shoots under−K but was downregulated under−N and−*** effects of combined NPK starvation were not a simple addition of the individual stresses on sorghum *** identified common and specific differentially expressed miRNAs were observed under single and combined NPK *** findings will help to further elucidate the functions of microRNAs and their interactions under multiple nutrient deficiency.

关键词： Sorghum MicroRNA Nitrogen Phosphate Potassium

Numerical Simulation of Optimization of Mixing Tank for Residue Upgrading Reactor

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China Petroleum Processing & Petrochemical Technology 2019年第2期21卷 110-117页

作者： Bao Di Tang Xiaojin zhu zhenxing SINOPEC Research Institute of Petroleum Processing

For studying the mixing tank for RMAC (residue upgrading to maximize asphaltene conversion) reactor, the CFD simulation was employed to simulate the flow field in the mixing tank. The dispersion of liquid-liquid phase in the mixing tank and the power of turbines were investigated. The simulation results showed that compared with the original doublelayer propeller, the A310-swept double-layer impellers could reduce the liquid heterogeneous degree by 27.5% and the stirring power by 3.25%. The influence of rotation speed on the heterogeneous degree and stirring power was investigated, and the critical rotation speed was obtained. The optimal rotation speed was determined to be 240 r/min. The heterogeneous degree was 0.19 and the minimum stirring power was 10.89 W. By optimizing the impeller selection and process conditions, the overall performance of the mixing tank could be significantly improved.

关键词： liquid-liquid mixing impellers numerical simulation critical rotation speed

Effect of Particle Shape on Catalyst Deactivation during 2-Butene and Isobutane Alkylation of Liquid Phase in Fixed-Bed Reactor Using Particle-Resolved CFD Simulation

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China Petroleum Processing & Petrochemical Technology 2022年第4期24卷 139-150页

作者： Zhang Sizhen zhu zhenxing Xin Feng Chu Menghan School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China SINOPEC Research Institute of Petroleum Processing Co. Ltd.Beijing 100083China

How catalyst shape affects its deactivation is a crucial issue for quickly decaying catalysts such as zeolite in 2-butene and isobutane *** this work,steady simulations are used to determine the temperature and species distribution in fixed beds filled with particles of four ***,unsteady simulations are used to study the deactivation behavior of the catalysts based on the steady simulation *** describe the deactivation rate and type of catalyst deactivation by defining a local internal diffusivity,which is affected by catalytic *** results reveal that the internal diffusion distance of the catalyst determines the deactivation rate,whereas the local internal diffusivity determines its deactivation type.

关键词： alkylation catalyst deactivation particle shape fixed bed particle-resolved CFD

Preparation of carbon nanotube films towards mechanical and electrochemical energy storage

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Nano Research 2023年第11期16卷 12411-12429页

作者： Yukang zhu Yanbin Wei zhenxing zhu Hongjie Yue Ziying He Qi Zhang Shijun Zhang Fei Wei Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Beijing Research Institute of Chemical Industry SINOPECBeijing 100013China

Due to unique and excellent properties,carbon nanotubes(CNTs)are expected to become the next-generation critical engineering mechanical and energy storage materials,which will play a key role as building blocks in aerospace,military equipment,communication sensing,and other cutting-edge *** practical application,the assembled macrostructures from individual CNTs are the common paradigms such as fibers or *** the main representative,CNT films can not only retain the unique properties of their CNTs components,but also are more likely for mass-production than other ***,in this review,we focus on preparation of CNT films and discuss their emerging applications in the field of mechanical and electrochemical energy storage/***,different preparation processes are systematically *** we introduce some typical strategies to improve their mechanical performances besides strengthening *** on the progress of mass-production and performance optimization,we further discuss their potential utilization in mechanical and electrochemical energy storage/conversion ***,future perspectives for the development of CNT films in both production and application are *** hope that this review will shed light on the preparation/assembly of CNT films and integrated application of excellent properties from individual to macroscopic ***,the preparation and cross-scale application paradigms of CNT films also offer a good model for other macroscopic ordered assemblies of one-dimensional nanomaterials.

关键词： carbon nanotubes carbon nanotube film preparation mechanical strengthening energy storage

Controlled growth of crossed ultralong carbon nanotubes by gas flow

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Nano Research 2020年第7期13卷 1988-1995页

作者： zhenxing zhu Yunxiang Bai Nan Wei Jun Gao Silei Sun Chenxi Zhang Fei Wei Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Nano Materials Group Department of Applied Physics and Center for New MaterialsSchool of ScienceAalto UniversityPO Box 15100Fl-00076 AaltoFinland

Carbon nanotubes(CNTs)work as the promising components of miniature electromechanical systems due to their ecellent performances from individual to bundle *** it's challenging to achieve precise patterning at nanoscale resolution with controlled position and ***,we demonstrate a fluidic strategy to interlace one-dimensional(1D)ultralong CNTs into the crossed pattern in a one-step in-situ ***-circular substrates of different diameters were placed in front of the growth substrate to change the path and momentum of gas *** flow perturbation caused by substrates could be markedly reflected within a micro-channel reactor,which led to formation of crossed utralong CNTs at definite ***,precise control over the crossing angle as well as the diameter distribution of CNTs was achieved by varying the CNT length and diameter of semi-circular *** strategy has offered a feasible route for production of crossed ultralong CNTs and will contribute to multidimensional fluidic assembly of flexible nanomaterals.

关键词： crossed ultralong carbon nanotubes nanoscale patterning controlled synthesis fluidic assembly

Oral pyroptosis nanoinhibitor for the treatment of inflammatory bowel disease

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Nano Research 2024年第3期17卷 1748-1759页

作者： zhenxing zhu Dongtao Zhou Yi Yin zhun Li Zhen Guo Yongchun Pan Yanfeng Gao Jingjing Yang Weiming zhu Yujun Song Yi Li Department of General Surgery Affiliated Jinling HospitalMedical SchoolNanjing UniversityNanjing 210093China College of Engineering and Applied Sciences State Key Laboratory of Analytical Chemistry for Life ScienceNanjing UniversityNanjing 210023China Department of General Surgery Affiliated Drum Tower HospitalMedical SchoolNanjing UniversityNanjing 210008China Department of Biochemistry and Molecular Biology School of Medicine&Holistic Integrative MedicineJiangsu Collaborative Innovation Center of Chinese Medicinal Resources IndustrializationNanjing University of Chinese MedicineNanjing 210023China

Inflammatory bowel disease(IBD)is an autoimmune gastrointestinal disease characterized by chronic relapsing inflammation of the *** pyroptosis that exists in the inflamed intestine can activate damage signals and aggravate local inflammation in ***,we designed an oral pyroptosis nanoinhibitor,DXMS@CuM@PPADT@PSS(DCMP),which can target intestinal lesions,and respond to reactive oxygen species(ROS)to release active sites and drugs at the *** can inhibit the activation of the nucleotide-binding domain and leucine-rich repeat family pyrin domain containing 3(NLRP3)inflammasomes by scavenging ROS,resulting in the down-regulation of gasdermin D(GSDMD)cleavage thus inhibiting *** also improved intestinal barrier function,decreased inflammatory cytokine levels,and increased the diversity of gut microbiota in mice with *** work is believed to expand the biomedical application of nanomaterials for innate immunity modulation.

关键词： inflammatory bowel disease nanoinhibitors pyroptosis synergistic therapy antioxidant

Identification of a Novel OsCYP2 Allele that Was Involved in Rice Response to Low Temperature Stress

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Phyton-International Journal of Experimental Botany 2023年第6期92卷 1743-1763页

作者： Hongxiu Gao Lin zhu Tianqi Liu Xueyu Leng zhenxing zhu Wei Xie Haitao Lv Zhengxun Jin Ping Wu Zhongchen Zhang College of Agriculture Northeast Agricultural UniversityHarbin150030China Hulin Agricultural Technology Extension Center Hulin158400China Liaoning Academy of Agricultural Sciences Shenyang110161China Zhejiang University Hangzhou310000China

Cyclophilin(CYP)plays an important role in plant response to stress,and OsCYP2,one gene of cyclophlilin family,is involved in auxin signal transduction and stress signaling in ***,the mechanism that OsCYP2 is involved in rice response to low temperature is still *** identified a new OsCYP2 allelic mutant,lrl3,with fewer lateral roots,and the differences in shoot height,primary root length and adventitious root length increased with the growth process compared to the wild-type *** signaling pathway was also affected and became insensitive to *** transgenic rice plants with over-expression of OsCYP2 were more tolerant to low temperature than the wild-type plants,suggesting that OsCYP2 was involved in the low temperature response in *** addition,OsCYP2 negatively regulated the expression of OsTPS38,a terpene synthase gene,and was dependent on the OsCDPK7-mediated pathway in response to low temperature ***38-overexpressed transgenic line ox-2 was more sensitive to low ***,OsCYP2 may negatively regulate OsTPS38 through an OsCDPK7-dependent pathway to mediate the response to low temperature in *** results provide a new basis for auxin signaling genes to regulate rice response to low temperature stress.

关键词： Rice low temperature OsCYP2 OsTPS38 OsCDPK7

Carbon nanotube films with ultrahigh thermal-shock and thermalshock-fatigue resistance characterized by ultra-fast ascending shock testing

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Nano Research 2024年第8期17卷 6777-6784页

作者： Mingquan zhu Shijun Wang Yunxiang Bai Feng Gao zhenxing zhu Congying Wang Peng Zhang Hao Jin Hui Zhang Luqi Liu Zhiping Xu Xinghong Zhang Fei Wei Zhong Zhang CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Department of Engineering Mechanics Tsinghua UniversityBeijing 100084China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Center for Composite Materials and StructuresHarbin Institute of TechnologyHarbin 150001China CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsUniversity of Science and Technology of ChinaHefei 230027China

The exploration of material failure behavior not only involves defining its limits and underlying mechanisms but also entails devising strategies for improvement and protection in extreme ***'ve pioneered an advanced multi-scale,high-speed ascending thermal shock testing platform capable of inducing unprecedented heat shocks at rates surpassing 105℃/*** meticulous examination of the thermal shock responses of carbon nanotube(CNT)films,we've achieved remarkable *** employing an innovative macro-scale synchronous tightening and relaxing approach,we've attained a critical temperature differential in CNT films that exceeds an exceptional 2500℃—surpassing any previously reported metric for highperformance,thermal-shock-resistant ***,these samples have demonstrated exceptional resilience,retaining virtually unchanged strength even after enduring 10,000 thermal shock cycles at temperatures exceeding 1000℃.Furthermore,our research has revealed a novel thermal shock/fatigue failure mechanism that fundamentally diverges from conventional theories centered on thermal stress.

关键词： carbon nanotubes failure behavior thermal shock characterization

Research Progress on a SARS-CoV-2 Vaccine in China

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Journal of Biosciences and Medicines 2021年第11期9卷 76-88页

作者： Jing Zhang Ying Sun zhenxing zhu Jingtong Zheng Department of the Intensive Care Unit First Hospital of Jilin University Changchun China Department of Pathogen Biology College of Basic Medical Sciences Jilin University Changchun China Department of Respiratory and Critical Care Medicine First Hospital of Jilin University Changchun China Department of Hematology and Oncology Third Hospital of Jilin University Changchun China

Although many countries have controlled the pandemic of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) through strict management, there are still many countries with record-breaking numbers of new cases. Therefore, it is very important to develop a vaccine that can cause wide cross reactivity in clinical trials. At present, more than 90 vaccines are entering clinical trials and progressing smoothly, including inactivated vaccines, adenovirus-vectored vaccines and other types of vaccines. Here, we review and summarize the efficacy and potential threats of a SARS-CoV-2 vaccine. We reviewed whole-virus vaccines, adenovirus-subunit vaccines and recombinant protein vaccines and discussed the positive and negative consequences of a SARS-CoV-2 vaccine. However, there are still heated debates on the mechanism, effectiveness, and breadth of protection. In conclusion, this study can predict the risk of new coronavirus outbreaks in the future by discussing the research and development status of new coronavirus vaccines in China and other countries. Looking to the future, it is important to mine the large amount of data generated in clinical trials of universal new coronavirus vaccines to ensure that these vaccine programs are equally useful in the face of new coronavirus mutations.

关键词： SARS-CoV-2 Whole-Virus Vaccines Adenovirus-Subunit Vaccines Recombinant Protein Vaccines

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对称性匹配调控水平单壁碳纳米管阵列手性

化学进展 2017年第6期29卷 579-581页

作者：朱振兴魏飞清华大学化工系绿色反应工程与工艺北京市重点实验室北京100084 清华大学微纳米力学与多学科交叉创新研究中心北京100084

缩减芯片尺寸、提高芯片性能是推动计算机行业发展数十年的＂摩尔定律＂正确性的关键体现。按照摩尔定律所述,新的芯片制造技术每两年就会升级,它已经帮助实现了将计算机送到我们的桌子上、口袋里以及手腕上。

关键词：碳纳米管阵列对称性匹配计算机行业手性单壁控水芯片制造技术摩尔定律