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浙江大学特种控制阀研究室（英文）

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2019年第3期20卷 229-232页

作者： jin-yuan qian Bao-qing LIU Zhi-xin ZHANG Sun-ting YAN Li-long CHEN Zhi-jiang jin Institute of Process Equipment College of Energy EngineeringZhejiang University State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University Department of Energy Sciences Lund University Hangzhou Worldwise Valve Co. Ltd.

目的:目前大中型控制阀大多存在结构复杂、驱动能耗大、反应时间慢、振动噪声大、稳定性差和使用寿命短等缺点。基于此,浙江大学相关研究人员组建了特种控制阀研究室,致力于提升控制阀的整体性能和设计水平。研究点:本研究室的主要方向... 详细信息

目的:目前大中型控制阀大多存在结构复杂、驱动能耗大、反应时间慢、振动噪声大、稳定性差和使用寿命短等缺点。基于此,浙江大学相关研究人员组建了特种控制阀研究室,致力于提升控制阀的整体性能和设计水平。研究点:本研究室的主要方向为:1.控制阀内部流动特性分析和新结构设计开发;2.流体目标流量、温度、压力和振动噪声等的智能控制研究;3.适应纳米流体、压缩氢气和高温高压过热蒸汽等新流体介质的智慧控制阀研究。展望:特种控制阀作为超超临界火电机组、核电、石化高压反应和百万吨级乙烯工程等国家重大重点工程的关键零部件之一,将会在内流动机理、新结构开发、新流体介质和智能控制等研究领域得到广泛关注和长足发展。

关键词：控制阀智能控制流动控制流动特性

Assessing the corrosion protection property of coatings loaded with corrosion inhibitors using the real-time atmospheric corrosion monitoring technique

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 119-126页

作者： Xiaoxue Wang Lulu jin jinke Wang Rongqiao Wang Xiuchun Liu Kai Gao jingli Sun Yong yuan Lingwei Ma Hongchang qian Dawei Zhang School of Energy and Power Engineering Beihang UniversityBeijing 100191China Beijing Institute of Space Long March Vehicle Beijing 100076China National Materials Corrosion and Protection Data Center University of Science and Technology BeijingBeijing 100083China Institute of Materials Intelligent Technology Liaoning Academy of MaterialsShenyang 110004China Shanghai Spaceflight Precision Machinery Institute Shanghai 201600China

The atmospheric corrosion monitoring(ACM)technique has been widely employed to track the real-time corrosion behavior of metal ***,limited studies have applied ACM to the corrosion protection properties of organic *** study compared a bare epoxy coating with one containing zinc phosphate corrosion inhibitors,both applied on ACM sensors,to observe their corrosion protection properties over *** with artificial damage via scratches were exposed to immersion and alternating dry and wet environments,which allowed for monitoring galvanic corrosion currents in *** the corrosion tests,the ACM currents of the zinc phosphate/epoxy coating were considerably lower than those of the blank epoxy *** trend in ACM current variations closely matched the results obtained from regular electrochemical tests and surface *** alignment highlights the potential of the ACM technique in evaluating the corrosion protection capabilities of organic *** with the blank epoxy coating,the zinc phosphate/epoxy coating showed much-decreased ACM current values that confirmed the effective inhibition of zinc phosphate against steel corrosion beneath the damaged coating.

关键词： atmospheric corrosion monitoring technology corrosion inhibitor coating carbon steel corrosion protection

In situ measurement of environmental γ radiation dose rates of key nuclides for large radioactive surface sources

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Nuclear Science and Techniques 2025年第1期36卷 69-79页

作者： Ze-qian Wu Jian Sun Wei-Qi Huang Bai-Rong Wang jin-Xing Cheng Jiang-Feng Wu Yong-Hong Wang Biao yuan Sheng Qi Kun Shan Institute of NBC Defence Beijing 102205China Beijing New-High Technology Academy Beijing 100094China

To monitor nuclear and radiation emergencies,it is crucial to obtain accurate in situ measurements of the environmentalγ radiation dose rate from key radionuclides,particularly for large radioactive surface *** methods currently used for measuring dose rates are inadequate for obtaining the dose rates of key radionuclides and have large angular response errors when monitoring surface *** address this practical problem,this study proposes three methods for measuring the dose rate:the weighted peak total ratio,mean value regression,and numerical integration *** methods are based on energy-spectrum measurement data,and they were theoretically derived and numerically ***,a 1-m-long hexagonal radioactive surface source was integrated into a larger surface *** situ measurement experiments were conducted on a large radioactive surface source using a dose-rate meter and a portable HPGespectrometer to analyze the errors of the three aforementioned methods and verify their validity.

关键词： Environmentalγradiation dose rate HPGespectrometer Key radionuclides Radioactive surface source

Reversible phase transition poly(benzyl methacrylate)/ionic liquid electrolytes for effective overheating protection in lithium batteries

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Journal of Energy Chemistry 2025年第2期101卷 76-86页

作者： qian Yu Wei Sun Jialing Zhu Haoxiang Li Shuai Wang Longqing Huang qian Qiu Haoran Tian He Miao Fu Wang Chunfei Zhang jinliang yuan Lan Xia Ningbo Innovation Team on New Energies and Marine Applications Faculty of Maritime and Transportation Ningbo University Technical University of Munich TUM School of Natural Sciences Department of Physics Chair for Functional Materials

Battery safety is influenced by various factors,with thermal runaway being one of the most significant *** most studies have concentrated on developing one-time,self-activating mechanism for thermal protection,such as temperature-responsive electrodes,and thermal-shutdown separators,these methods only provide irreversible ***,reversible temperature-sensitive electrolytes have emerged as promising alternatives,offering both thermo-reversibility and self-protective ***,further research is crucial to fully understand these thermal-shutdown *** this study,we propose lower critical solution temperature(LCST) phase behavior poly(benzyl methacrylate)/imidazolium-based ionic liquid mixtures to prepare temperature-sensitive electrolytes that provide reversible thermal shutdown protection of *** electrolyte features an appropriate protection temperature(～105℃) and responds quickly within a 1 min at 105℃,causing cells to hardly discharge as the voltage suddenly drops to 3.38 V,and providing efficient thermal shutdown protection within 30 *** cooling back to room temperature,the battery regains its original ***,the electrolyte exhibits excellent cycling stability with the capacity retention of the battery is 91.6% after 500 *** work provides a viable solution for preventing batteries from thermal runaway triggered by overheating.

关键词： Ionic liquid Lithium-ion battery Lower critical solution temperature Overheating Safety Thermal runaway

Direct and rapid detection of serum amino acid and monoamine neurotransmitters to assist the diagnosis of panic disorder

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Science China Chemistry 2025年第1期68卷 377-384页

作者： Shiwen Liu Xuerui Wan Meng Zhao Jiaqi Wang Weilan Wu Linlin You Yonggui yuan qian Xu Rong Gao Key Laboratory of Environmental Medicine Engineering Ministry of EducationSchool of Public HealthSoutheast UniversityNanjing 210009China Key Laboratory of Modern Toxicology of Ministry of Education Department of Hygienic Analysis and DetectionSchool of Public HealthNanjing Medical UniversityNanjing 211166China Department of Psychosomatics and Psychiatry Zhongda HospitalSchool of MedicineSoutheast UniversityNanjing 210009China

The measurement of amino acid and monoamine neurotransmitters(NTs)in serum plays a central role in the identification and monitoring of clinical panic disorder(PD).However,the strong polarity and chemical heterogeneity of NTs make direct extraction and rapid detection extremely ***,we developed a strategy that integrated solid phase extraction based on magnetic Fe_(3)O_(4)coated with polydopamine(Fe_(3)O_(4)@PDA)and direct analysis of mass spectrometry in real time(DART-MS)for quantification of 10 *** systematically investigated the optimal conditions of this strategy to achieve good accuracy and *** with existing magnetic solid phase extraction methods for NTs detection in biological samples,this strategy could adsorb more targets while having similar adsorption efficiencies,and the total process time was reduced by an average of 69.42%.We rapidly determined the metabolic abnormality of 6 types of NTs in the serum of PD patients and demonstrated their diagnostic *** addition,an outstanding feature of PD in which tryptophan was more metabolized by the KYN pathway and the 5-hydroxytryptamine pathway was inhibited could be elucidated by this *** results highlighted the potential ability of Fe_(3)O_(4)@PDA coupled with DART-MS to assist in the clinical diagnosis of PD.

关键词： neurotransmitters panic disorder magnetic solid phase extraction direct analysis of mass spectrometry in real time

Single-cell sequencing reveals the features of adaptive immune responses in the liver of a mouse model of dengue fever

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Animal Models and Experimental Medicine 2025年第1期8卷 30-43页

作者： Yizhen yuan qian Chen Zhe Li Fangzhou Cai Dan Li Wei Wang National Center of Technology Innovation for Animal Model State Key Laboratory of Respiratory Health and MultimorbidityKey Laboratory of Pathogen Infection Prevention and Control(Peking Union Medical College)Ministry of EducationNHC Key Laboratory of Comparative MedicineInstitute of Laboratory Animal ScienceChinese Academy of Medical Sciences(CAMS)&Peking Union Medical College(PUMC)BeijingChina

Background:Dengue fever,an acute insect-borne infectious disease caused by the dengue virus(DENV),poses a great challenge to global public *** involve-ment is the most common complication of severe dengue and is closely related to the occurrence and development of ***,the features of adaptive immune responses associated with liver injury in severe dengue are not ***:We used single-cell sequencing to examine the liver tissues of mild or se-vere dengue mice model to analyze the changes in immune response of T cells in the liver after dengue virus infection,and the immune interaction between macrophages and T *** cytometry was used to detect T cells and macrophages in mouse liver and blood to verify the single-cell sequencing ***:Our result showed CTLs were significantly activated in the severe liver injury group but the immune function-related signal pathway was *** rea-son may be that the excessive immune response in the severe group at the late stage of DENV infection induces the polarization of macrophages into M2 type,and the macrophages then inhibit T cell immunity through the TGF-βsignaling *** ad-dition,the increased proportion of Treg cells suggested that Th17/Treg homeostasis was disrupted in the livers of severe liver injury ***:In this study,single-cell sequencing and flow cytometry revealed the characteristic changes of T cell immune response and the role of macrophages in the liver of severe dengue fever *** study provides a better understanding of the pathogenesis of liver injury in dengue fever patients.

关键词： adaptive immunity dengue fever model liver injury single-cell sequencing

Spatial and Temporal Distribution of Metal Elements in the Rivers of Northern Jiangsu Province

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Journal of Ocean University of China 2025年第1期24卷 157-168页

作者： yuan Liping LIU qian JIAN Huimin MI Tiezhu YANG Fuxia YAO Qingzhen Frontiers Science Center for Deep Ocean Multispheres and Earth System and Key Laboratory of Marine Chemistry Theory and TechnologyMinistry of EducationOcean University of ChinaQingdao 266100China Laboratory of Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China Key Laboratory of Land and Sea Ecological Governance and Systematic Regulation of the Ministry of Ecology and Environment Shandong Academy for Environmental PlanningJinan 250101China

The concentrations of V,Cr,Mn,Fe,Co,Ni,Cu,Zn,As,Mo,Cd,and Pb were determined in Doulonggang River,Xinyanggang River,Huangshagang River,Sheyanghe River,Guangaizongqu River,and Linhonghe River at the North of Jiangsu Province in *** annual average concentrations of V,Cr,Mn,Fe,Co,Ni,Cu,Zn,As,Mo,Cd and Pb in the six rivers were 2.20,1.22,4.53,21.9,0.13,2.79,1.77,4.00,2.97,3.87,0.01,0.19μg L^(-1)*** highest concentration of most trace metals were found in Guangaizongqu River and Linhonghe River,and the lowest concentration were found in Xinyanggang River and Huangshagang *** principal component analysis(PCA)resulted of two factors together explained 91.2%of the variance with>1initial eigenvalue,indicating that both natural and anthropogenic activities were contributing factors as the source of metal abundance in rivers of northern Jiangsu *** first major component represented the influence of anthropogenic activities,including industry and agriculture,with a contribution rate of 54.1%,affected Cr,Fe,Cu,Zn,Mo,Cd and *** second(such as V,Mn,Co,Ni,As)was a mixed source,including the natural processes such as precipitation,erosion and weathering and anthropogenic action like industry and agriculture,with a contribution rate of 37.1%.Seasonal variations in trace metal concentrations were influenced by temperature,salinity,water discharge,and input of external *** highest concentrations were found in wet season and were strongly influenced by rainfall and seasonal industrial and agricultural activities.

关键词： trace metal distribution rivers northern Jiangsu Province

Enantioselective copper-catalyzed dearomative borylative cyclization of indoles and mechanistic insights

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Science China Chemistry 2025年第2期68卷 670-678页

作者： Yanfei Li Xuetao Li Zheng Zhang Yiliang Zhang Xiuping yuan Jianjun Yin Simin Wang Wei Guan qian Zhang Tao Xiong Jilin Province Key Laboratory of Organic Functional Molecular Design&Synthesis Department of ChemistryNortheast Normal UniversityChangchun 130024China Institute of Functional Material Chemistry Department of ChemistryNortheast Normal UniversityChangchun 130024China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China School of Chemistry and Chemical Engineering Harbin Normal UniversityHarbin 150025China

Alicyclic nitrogen heterocycles,such as enantioenriched polycyclic fused[1,2-a]indoline derivatives,are widespread in natural products,agrochemicals and pharmaceutical *** methods predominantly rely on the recent emerging Heck-type catalytic asymmetric dearomatization(CADA)protocol,wherein noble palladium catalysts commonly necessitate the form arylPd species-triggered these *** contrast,a more sustainable base metal catalysis paradigm through alkyl metal species disrupting the aromaticity,that is,the utilization of challenging asymmetric Csp3–Csp3 bond formation entry to such important chiral densely functionalized polycyclic molecular scaffolds,remains an elusive ***,we report the first copper-catalyzed dearomative borylative cyclization of indoles under mild reaction conditions,affording an array of valuable Bpin-containing pyrrolo-fused[1,2-a]indolines bearing four consecutive stereogenic centers with excellent enantioand *** synthetic potential was documented via an array of useful *** functional theory(DFT)calculation studies elucidated the origin of the chemo-,regio-,enantio-and diastereoselectivities of this conversion.

关键词： copper catalysis dearomatization borylative cyclization indoles DFT calculations

The third dimension of alpine plant leaf traits is related to cold-tolerance

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Plant Diversity 2025年第1期47卷 159-165页

作者： yuan Wang Ji Suonan Kun Liu Yanni Gao Sihao Zhu qian Liu Ning Zhao State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems College of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhouChina College of Life Sciences Qinghai Normal UniversityXiningChina College of Ecology Lanzhou UniversityLanzhouChina State Environmental Protection Key Laboratory of Regional Eco-process and Function Assessment Chinese Research Academy of Environmental SciencesBeijingChina State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijingChina

Alpine plants possess unique traits to adapt alpine *** leaf trait relationships of alpine plants can be captured by the two trait dimensions of organ size and resource economics is *** hypothesized that,beyond the trait dimensions of leaf size and resource economics,nonstructured carbohydrates(NSC)would reflect a dimension of cold-tolerance in alpine *** test this hypothesis,we measured 12 leaf traits critical to leaf construction and growth in 143 species across 7 sites ranging from alpine steppes to alpine meadows along an environmental gradient on the Tibetan ***,a cold resistance experiment was conducted at one of these sites to estimate the lethal temperature causing 50%frost damage(LT_(50))of 11 alpine *** majority of variations in 12 leaf traits of alpine plants were captured by three trait axes,in which leaf carbon(LCC)and NSC(including leaf starch;LSC and leaf soluble sugars;LSS)were clustered in a new dimension(PC3)beyond leaf size and structure,and resource *** LCC,LSC and LSS all showed negative correlations with mean annual temperature,a significant negative correlation was only found between LSS and LT_(50).It indicated that PC3 was able to reflect the cold-tolerance of alpine plants to some extent,in which LSS was the most critical *** storage and transformation of NSC under stressful conditions could reflect a dimension of long-term metabolic adaptation and cold-tolerance,which is an extension of the resource-utilization strategy beyond construction cost and growth.

关键词： Non-structured carbohydrates Resource economics Stress resistance Trait relationships The lethal temperature causing 50%frost damage(LT50)