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Design method of extractant for liquideliquid extraction based on elements and chemical bonds

Chinese Journal of Chemical Engineering 2024年第4期68卷 193-202页

作者： Yuwen Wei chunling zhang Yue zhang Lili Wang Li Xia Xiaoyan Sun Shuguang Xiang Institute of Process System Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao 266042China Yantai Guobang Chemical Machinery Technology Co. Ltd.Yantai 264002China

In the petrochemical industry process,the relative volatility between the components to be separated is close to one or the azeotrope that systems are difficult to separate.Liquideliquid extraction is a common and effective separation method,and selecting an extraction agent is the key to extraction technology research.In this paper,a design method of extractants based on elements and chemical bonds was proposed.A knowledge-based molecular design method was adopted to pre-select elements and chemical bond groups.The molecules were automatically synthesized according to specific combination rules to avoid the problem of“combination explosion”of molecules.The target properties of the extractant were set,and the extractant meeting the requirements was selected by predicting the correlation physical properties of the generated molecules.Based on the separation performance of the extractant in liquideliquid extraction and the relative importance of each index,the fuzzy comprehensive evaluation membership function was established,the analytic hierarchy process determined the mass ratio of each index,and the consistency test results were passed.The results of case study based on quantum chemical analysis demonstrated that effective determination of extractants for the analysis of benzeneecyclohexane systems.The results unanimously prove that the method has important theoretical significance and application value.

关键词： Molecular design Element and chemical bonds Molecular simulation Thermodynamics Solvent extraction

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Fishery analysis using gradient-dependent optimal interpolation

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Acta Oceanologica Sinica 2022年第2期41卷 116-126页

作者： chunling zhang Danyang Wang Zhenfeng Wang College of Marine Sciences Shanghai Ocean UniversityShanghai 201306China Project Management Office of China National Scientific Seafloor Observatory Tongji UniversityShanghai 200092China

The current lack of high-precision information on subsurface seawater is a constraint in fishery research.Based on Argo temperature and salinity profiles,this study applied the gradient-dependent optimal interpolation to reconstruct daily subsurface oceanic environmental information according to fishery dates and locations.The relationship between subsurface information and matching yellowfin tuna(YFT)in the western and central Pacific Ocean(WCPO)was examined using catch data from January 1,2008 to August 31,2017.The seawater temperature and salinity results showed differences of less than±0.5°C and±0.01 compared with the truth observations respectively.Statistical analysis revealed that the most suitable temperature for YFT fishery was 28–29°C at the near-surface.The most suitable salinity range for YFT fishery was 34.5–36.0 at depths shallower than 300 m.The suitable upper and lower bounds on the depths of the thermocline were 90–100 m and 300–350 m,respectively.The thermocline characteristics were prominent,with a mean temperature gradient exceeding 0.08°C/m.These results indicate that the profiles constructed by gradient-dependent optimal interpolation were more accurate than those of the nearest profiles adopted.

关键词： gradient-dependent optimal interpolation YFT Argo profiles WCPO

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CRISPR/Cas9 technology and its application in horticultural crops

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Horticultural Plant Journal 2022年第4期8卷 395-407页

作者： Yang Liu chunling zhang Xiaofei Wang Xiuming Li Chunxiang You State Key Laboratory of Crop Biology College of Horticulture Science and EngineeringShandong Agricultural UniversityTai’anShandong 271018China

Clustered Regularly Interspaced Short Palindromic Repeats/CRISPR associated 9(CRISPR/Cas9)system has recently become one popular technology due to its efficiency,precision,and simplicity compared with other genome editing tools such as Zinc Finger Nucleases(ZFNs)and Transcription Activator Like Effector Nucleases(TALENs).Horticultural crops provide energy and health-keeping nutrients to humankind.Genome-editing technology has become widely adopted in horticultural breeding with the increasing demand for high yield and better-quality horticultural crops.Here,we describe the CRISPR/Cas9 system construction,its optimization,including sgRNA promoter,sgRNA design,Cas9 protein promoter,SpCas9 variants and orthologs,and vector delivery methods.We also summarized the application of this technology in horticultural plants for stress responses enhancement,fruit quality improvement,and cultivation traits modification.This detailed review was compiled to help establish comprehensive understanding of the CRISPR/Cas9 systems and provide a reference for further developing this technology to manipulate horticultural plant traits effectively.

关键词： Gene editing CRISPR/Cas9 technology Horticultural plant

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Transition metal embedded in nonmetal-doped T-carbon [110]: A superior synergistic trifunctional electrocatalyst for HER, OER and ORR

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能源化学:英文版 2023年第8期83卷 79-89,I0004页

作者： Zhengqin Zhao Jinbo Hao Baonan Jia Xinhui zhang Ge Wu chunling zhang Long Li Shuli Gao Yirong Ma Yuanzi Li Pengfei Lu School of Science Xian University of Architecture and TechnologyXi'an 710055ShaanxiChina State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and TelecommunicationsBeijing 100876China School of Electronic Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China School of Integrated Circuits Beijing University of Posts and TelecommunicationsBeijing 100876China

The design of efficient and low-cost multifunctional electrocatalysts for hydrogen evolution reaction(HER), oxygen evolution reaction(OER) and oxygen reduction reaction(ORR) is critical for the development of clean energy. Two-dimensional(2D) carbon-based nano-materials are becoming more and more popular in heterogeneous catalysis due to their cost-effective and multi-scale tunability as single-atom catalysis(SACs) substrates. In this paper, by using first-principles calculation, we designed and demonstrated a novel macropore T-carbon [110](TC) monolayer as 2D electrocatalyst substrate for HER/OER/ORR, and the synergistic modification of the transition metal and nonmetal atoms(TM-X) were investigated to enhance the multifunctional electrocatalytic performance. We screened out the Co embedded in N-doped TC(Co3@N-TC) from 30 TM@X-TC monolayers as a trifunctional electrocatalysts, which exhibits superior performance for HER/ORR/OER on both thermodynamic and kinetic scales, and with excellent thermal and electrochemical stability. Then, the TC monolayer is naturally macropore with a diameter of 5.36 A and exhibits excellent adsorption capacity for the intermediates and products of the redox reactions. Moreover, we revealed the origin of the electrocatalytic activity using the crystal orbital Hamilton population(COHP) and the molecular orbitals(MOs). The d orbital of Co3@N-TC is significantly hybridized with the p orbital of the intermediates, so that the lone electrons initially occupied in the antibonding state pair up and occupy the downward bonding state, allowing *OH to be appropriately adsorbed onto the TC monolayer. This work not only demonstrates that the TM@X-TC monolayer is a superior synergistic trifunctional electrocatalyst, but also reveals a macropore monolayer material with potential applications in electrocatalysis.

关键词： Carbon-based nano-materials Macropore Single-atom catalyst Multifunctional electrocatalyst First-principles calculation

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Twenty years of ocean observations with China Argo

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Acta Oceanologica Sinica 2023年第2期42卷 1-16页

作者： Zenghong Liu Xiaogang Xing Zhaohui Chen Shaolei Lu Xiaofen Wu Hong Li chunling zhang Lijing Cheng Zhaoqin Li Chaohui Sun Jianping Xu Dake Chen Fei Chai State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou310012China Observation and Research Station of Global Ocean Argo System(Hangzhou) Ministry of Natural ResourcesHangzhou310012China Frontier Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Physical Oceanography Ocean University of ChinaQingdao266100China Department of Atmospheric and Oceanic Sciences/Institute of Atmospheric Sciences Fudan UniversityShanghai200438China College of Marine Sciences Shanghai Ocean UniversityShanghai201306China International Center for Climate and Environment Sciences Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China

The international Argo program,a global observational array of nearly 4000 autonomous profiling floats initiated in the late 1990s,which measures the water temperature and salinity of the upper 2000 m of the global ocean,has revolutionized oceanography.It has been recognized one of the most successful ocean observation systems in the world.Today,the proposed decade action“OneArgo”for building an integrated global,full-depth,and multidisciplinary ocean observing array for beyond 2020 has been endorsed.In the past two decades since 2002,with more than 500 Argo deployments and 80 operational floats currently,China has become an important partner of the Argo program.Two DACs have been established to process the data reported from all Chinese floats and deliver these data to the GDACs in real time,adhering to the unified quality control procedures proposed by the Argo Data Management Team.Several Argo products have been developed and released,allowing accurate estimations of global ocean warming,sea level change and the hydrological cycle,at interannual to decadal scales.In addition,Deep and BGC-Argo floats have been deployed,and time series observations from these floats have proven to be extremely useful,particularly in the analysis of synoptic-scale to decadal-scale dynamics.The future aim of China Argo is to build and maintain a regional Argo fleet comprising approximately 400 floats in the northwestern Pacific,South China Sea,and Indian Ocean,accounting for 9%of the global fleet,in addition to maintaining 300 Deep Argo floats in the global ocean(25%of the global Deep Argo fleet).A regional BGC-Argo array in the western Pacific also needs to be established and maintained.

关键词： Argo program China Argo ocean observation core Argo Deep Argo BGC-Argo

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生物育种技术发展中的法律框架与策略探讨:保护与创新的平衡

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分子植物育种 2024年第1期22卷 144-149页

作者：张春玲东北农业大学公共管理与法学院哈尔滨150030

随着科技的飞速进展,生物育种技术逐渐成为农业领域的核心技术之一,为农业生产、抵御疾病和害虫、适应气候变化等问题提供了新的解决路径。然而,技术的飞速发展也带来了一系列的法律挑战。本研究旨在深入探讨生物育种技术发展中的法律... 详细信息

随着科技的飞速进展,生物育种技术逐渐成为农业领域的核心技术之一,为农业生产、抵御疾病和害虫、适应气候变化等问题提供了新的解决路径。然而,技术的飞速发展也带来了一系列的法律挑战。本研究旨在深入探讨生物育种技术发展中的法律框架和策略,重点分析如何在保护技术创新者的权益与满足公共利益、伦理、安全等社会诉求之间实现平衡。研究结果表明,一个公正、透明并与技术发展相适应的法律框架是确保生物育种技术健康发展的关键。为此,本研究提出了一系列策略和建议,旨在更好地平衡保护与创新。

关键词：生物育种技术法律框架技术策略技术保护技术创新

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Chrysin promotes osteogenic differentiation via ERK/MAPK activation

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Protein & Cell 2013年第7期4卷 539-547页

作者： Wenfeng Zeng Yan Yan Fayun zhang chunling zhang Wei Liang Protein&Peptide Pharmaceutical Laboratory Institute of BiophysicsChinese Academy of SciencesBeijing 100101China University of the Chinese Academy of Sciences Beijing 100049China Department of Endodontics Beijing Stomatological HospitalCapital Medical UniversityBeijing 100050China

T he effect of the anti-infl ammatory fl avonoid chrysin on osteogenesis was determined in preosteoblast MC3T3-E1 cells.Results demonstrated that chrysin could induce osteogenic differentiation in the absence of other osteo-genic agents.Chrysin treatment promoted the expres-sion of transcription factors(Runx2 and Osx)and bone formation marker genes(Col1A1,OCN,and OPN)as well as enhanced the formation of mineralized nodules.During osteogenic differentiation,chrysin preferentially activated ERK1/2,but not JNK nor the p38 MAPKs.Further experi-ments with inhibitors revealed the co-treatment of U0126,PD98059,or ICI182780(a general ER antagonist)with chrysin effectively abrogated the chrysin-induced osteo-genesis and ERK1/2 activation.Thus,the effect of chrysin on osteogenesis is ERK1/2-dependent and involves ER.Therefore,chrysin has the signifi cant potential to enhance osteogenesis for osteoporosis prevention and treatment.

关键词： chrysin osteogenesis ERK1/2 estrogen re-ceptor

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Clinical features analysis of B-cell acute lymphoblastic leukemia with KMT2A::AFF1 gene expression

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China Medical Abstracts(Internal Medicine) 2024年第1期41卷 60-61页

作者：张春玲 Dept Lab Med Shanghai General HospShanghai 200080

Objective To analyze the correlation between clinical features and prognosis or prognostic risk factors in patients with KMT2A::AFF1 gene positive B-ALL.Methods Retrospective cohort study was conducted.167cases of B-ALL admitted to the Shanghai General Hospital and the Naval Medical University Affiliated First Hospital from April 1,2011 to July 31.

关键词： admitted prognosis clinical

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On the microstructural evolution pattern toward nano-scale of an AISI 304 stainless steel during high strain rate surface deformation

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Journal of Materials Science & Technology 2020年第9期44卷 148-159页

作者： Hongwang zhang Yiming Zhao Yuhui Wang chunling zhang Yan Peng National Engineering Research Center for Equipment and Technology of Cold Strip Rolling College of Mechanical EngineeringYanshan UniversityQinhuangdao 066004China National Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China

In the present investigation,an austenitic AISI 304 stainless steel was subjected to high strain rate surface deformation by Pipe Inner-Surface Grinding(PISG)technique.The depth-dependent deformation parameters(strain,strain rate and strain gradient)were evaluated and the microstructures were systematically characterized.Microstructural evolution from millimeter-to nano-scale was explored,with special attention paid to the localized deformation.Microstructural evolution begins with the formation of planar dislocation arrays and the twin-matrix lamellae,which is followed by the localized deformation characterized by the initiation and the development of shear bands.A twinning-dominated process that was supplemented with dislocation slip-dominated one governed the microstructural evolution inside shear bands.The twin-matrix lamellae transform into extended/lamellar structure and finally the nanosized grains.Austenitic grains were substantially refined and martensitic transformation was effectively suppressed,of which the underlying mechanisms were analyzed.

关键词： Microstructural evolution Plastic deformation AISI 304 stainless steel Pipe inner-surface grinding Shear band

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Fabrication of nanostructure in inner-surface of AISI 304 stainless steel pipe with surface plastic deformation

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Journal of Materials Science & Technology 2018年第11期34卷 2125-2130页

作者： Hongwang zhang Yiming Zhao Yuhui Wang Huaxin Yu chunling zhang National Engineering Research Center for Equipment and Technology of Cold Strip Rolling College of Mechanical EngineeringYanshan University National Key Laboratory of Metastable Materials Science and Technology Yanshan University

In the present investigation, a pipe inner-surface grinding（PISG） technique was developed to fabricate nanostructure in the inner-surface of an austenitic 304 stainless steel pipe. PISG was performed by high speed shearing with hard sphere tips, leading to gradient distribution of strain, strain rate and strain gradient along depth. Nano-austenite with an average boundary spacing of 20 nm was generated, followed by deformation microstructure characterized by shear bands, multi-and uni-directional twins and planar dislocation arrays. Deformation induced grain refinement of austenitic 304 stainless steel with low stacking fault energy（SFE） covering 4–5 order＇s magnitude of length scales toward nanometer regime was unified.

关键词： Nanostrucutre Pipe inner-surface grinding Stainless steel Plastic deformation Nano-austenite

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