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Sea surface temperature evolution in the Yellow Sea Warm Current pathway and its teleconnection with high and low latitude forcing during the mid-late Holocene

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Journal of Oceanology and Limnology 2022年第1期40卷 93-109页

作者： Zhong PI Fengming CHANG Tiegang LI yikun CUI Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao 266071China Key Laboratory of Marine Sedimentology and Environmental Geology First Institute of OceanographyMinistry of Natural Resources(MNR)Qingdao 266061China Laboratory for Marine Geology and Environment Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China School of Geography and Ocean Science Collaborative Innovation Center of South China Sea StudiesNanjing UniversityNanjing 210023China

Sea surface temperature(SST)in the Yellow Sea Warm Current(YSWC)pathway is sensitive to the East Asian Winter Monsoon(EAWM)and ***,the role of the YSWC in the evolution of regional SST remains ***,we present new U 37 k′based SST and grain size sequences spanning the last 6092 years in the sediment core Z1,which was retrieved from the central Yellow Sea muddy ***,U 37 k′-SST gradually increased since 6.1 ka BP,with a series of centennial-scale fl *** variation was mainly caused by EAWM when YSWC was weak between 6.1 and~3.9 ka BP,as shown by the end-member content of grain ***,after YSWC was fully developed,i.e.,since~3.9 ka BP,it exerted critical eff ects on SST evolution in its *** 1010-and 538-year cycles of the SST sequence indicated a basic control of solar activity on the oceanic conditions in the Yellow *** is suggested that the variation of total solar irradiance was amplifi ed by thermohaline circulation and then transmitted to the Yellow Sea through the ***,the tropical Pacifi c signal of El Niño was transmitted to the YSWC through the Kuroshio *** dual properties of warm water transported by YSWC to compensate the EAWM and driving by Kuroshio Current closely linked the variation of SST in the YSWC pathway to the Northern Hemisphere high latitude climate and the tropical Pacifi *** fi ndings highlight the signifi cance of YSWC on regional SST evolution and its teleconnection to high and low latitude forcing,which grains a better understanding of the long-term evolution of SST in the middle latitude Yellow Sea.

关键词： Yellow Sea Warm Current U 37 k′-SST East Asian Winter Monsoon Kuroshio Current high and low latitude forcing

Developing fibrin-based biomaterials/scaffolds in tissue engineering

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Bioactive Materials 2024年第10期40卷 597-623页

作者： Songjie Li Xin Dan Han Chen Tong Li Bo Liu yikun Ju yang Li Lanjie Lei Xing Fan Department of Plastic and Reconstructive Surgery Xijing HospitalFourth Military Medical UniversityXi’an710032China Department of Plastic and Aesthetic(Burn)Surgery The Second Xiangya HospitalCentral South UniversityChangsh1410011China Key Laboratory of Artificial Organs and Computational Medicine in Zhejiang Province Institute of Translational MedicineZhejiang Shuren UniversityHangzhou310015China

Tissue engineering technology has advanced rapidly in recent years, offering opportunities to construct biologicallyactive tissues or organ substitutes to repair or even enhance the functions of diseased tissues and ***-engineered scaffolds rebuild the extracellular microenvironment by mimicking the extracellular ***-based scaffolds possess numerous advantages, including hemostasis, high biocompatibility, and gooddegradability. Fibrin scaffolds provide an initial matrix that facilitates cell migration, differentiation, proliferation,and adhesion, and also play a critical role in cell-matrix interactions. Fibrin scaffolds are now widelyrecognized as a key component in tissue engineering, where they can facilitate tissue and organ defect *** review introduces the properties of fibrin, including its composition, structure, and biology. In addition, themodification and cross-linking modes of fibrin are discussed, along with various forms commonly used in tissueengineering. We also describe the biofunctionalization of fibrin. This review provides a detailed overview of theuse and applications of fibrin in skin, bone, and nervous tissues, and provides novel insights into future researchdirections for clinical treatment.

关键词： Fibrin Scaffold Tissue engineering Tissue repair

THEORETICAL STUDY OF QUASI CONTINUOUSLY TUNABLE OPTICALLY PUMPED NH3 LASER

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THEORETICAL STUDY OF QUASI CONTINUOUSLY TUNABLE OPTICALLY PU...

Targeting the ECM component HA:a new route for mCRC treatment

International Conference on Millimeter Wave and far-Infrared Technology

作者： Lin yikun yang Xudong (Zhongshan University Guangzhou China) Zhongshan Univ Guangzhou China

ISBN: (纸本)0879427175

＜正＞ The electric dipole transition enhancement effect of the Hyper-Raman process was studied theoretically. It was possible to get a quasi continuously tunable FIR laser by using IR-microwave two-photon pumped NH3 system. The tuning range of the FIR laser would be larger than 2 GHz, if the cavity was used instead of waveguide as the sample tube.

关键词： sampling pipe far infrared laser Theoretical Study ammonia Laser ELECTRIC DIPOLE TRANSITIONS Waveguide Device Component tuning range

来源： cnki会议 cnki会议评论

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Science China(Life Sciences) 2023年第8期66卷 1944-1946页

作者： Wanjing Shang Simone Gottlieb yikun Yao Laboratory of Immune System Biology National Institute of Allergy and Infectious DiseasesNational Institutes of HealthBethesda 20892USA

Colorectal cancer(CRC)is a complex and heterogeneous disease that is the second-leading cause of cancer-related deaths *** colorectal cancer(m CRC)accounts for about one-third of all *** significant advances in understanding the molecular mechanisms underlying m CRC,effective treatments for patients with advanced disease remain limited,particularly for the aggressive mesenchymal subtype of CRC(Rawla et al.,2019).

关键词： cancer treatment

Achievement of giant cryogenic refrigerant capacity in quinary rare-earths based high-entropy amorphous alloy

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Journal of Materials Science & Technology 2022年第7期102卷 66-71页

作者： yikun Zhang Jian Zhu Shuo Li Jiang Wang Zhongming Ren State Key Laboratory of Advanced Special Steels&Shanghai Key Laboratory of Advanced Ferrometallurgy&School of Materials Science and Engineering Shanghai UniversityShanghai 200444China

Magnetic refrigeration(MR)by utilizing the magnetocaloric(MC)effect is recognized as one of the most potential promising solid state environmentally friendly and high efficiency alternative method to the well-used state-of-the-art gas compression cooling *** this work,a systematic investigation of quinary equi-atomic rare-earths(RE)based Er_(20) Ho_(20) Gd_(20) Ni_(20) Co_(20) high-entropy(HE)amorphous alloy in terms of the microstructure,magnetic and magnetocaloric(MC)properties have been *** Er_(20) Ho_(20) Gd_(20) Ni_(20) Co_(20) exhibits promising glass forming ability with an undercooled liquid region of 72 *** cryogenic MC performances can be found in wide temperature from∼25 and∼75 K,close to H_(2) and N_(2) liquefaction,*** from the largest magnetic entropy change(-S M)reaches 17.84 J/(kg K)with 0-7 T magnetic field change,corresponding refrigerant capacity(RC)attains a giant value of 1030 J/*** promising cryogenic MC performances together with the unique HE amorphous characterizations make the quinary Er_(20) Ho_(20) Gd_(20) Ni_(20) Co_(20) HE amorphous alloy attractive for cryogenic MR applications.

关键词： HE-amorphous ribbons Magnetocaloric performances Rare earths Magnetic properties Giant refrigerant capacity

Multi-Objective Redundancy Optimization of Continuous-Point Robot Milling Path in Shipbuilding

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Computer Modeling in Engineering & Sciences 2023年第2期134卷 1283-1303页

作者： Jianjun Yao Chen Qian yikun Zhang Geyang Yu College of Mechanical and Electrical Engineering Harbin Engineering UniversityHarbin150001China

The 6-DOF manipulator provides a new option for traditional shipbuilding for its advantages of vast working space,low power consumption,and excellent ***,the rotation of the end effector along the tool axis is functionally redundant when using a robotic arm for five-axis *** the process of ship construction,the performance of the parts’protective coating needs to bemachined tomeet the Performance Standard of Protective Coatings(PSPC).The arbitrary redundancy configuration in path planning will result in drastic fluctuations in the robot joint angle,greatly reducing machining quality and *** have been some studies on singleobjective optimization of redundant variables,However,the quality and efficiency of milling are not affected by a single factor,it is usually influenced by several factors,such as the manipulator stiffness,the joint motion smoothness,and the energy *** solve this problem,this paper proposed a new path optimization method for the industrial robot when it is used for five-axis *** path smoothness performance index and the energy consumption index are established based on the joint acceleration and the joint velocity,*** path planning issue is formulated as a constrained multi-objective optimization problem by taking into account the constraints of joint limits and singularity ***,the path is split into multiple segments for optimization to avoid the slow convergence rate caused by the high *** algorithm combining the non-dominated sorting genetic algorithm(NSGA-II)and the differential evolution(DE)algorithm is employed to solve the above optimization *** simulations validate the effectiveness of the algorithm,showing the improvement of smoothness and the reduction of energy consumption.

关键词： Shipbuilding robot milling functional redundancy path optimization multi-objective

Degradation and mineralization of 2-chlorophenol in a single-stage anaerobic fixed-bed bioreactor

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Science China(Technological Sciences) 2020年第1期63卷 86-95页

作者： GENG yikun LI ZhengHao YUAN Li PAN XinRong SHENG GuoPing CAS Key Laboratory of Urban Pollutant Conversion Department of Applied Chemistry University of Science and Technology of China

Chlorophenols(CPs) have drawn great attention due to their high toxicity and ubiquitous presence in the environment. However,the practical application of anaerobic biodegradation to remove CPs is limited by low degradation rate and incomplete mineralization. This work aims to apply a single-stage anaerobic fixed-bed bioreactor(An FBR) for complete anaerobic dechlorination and mineralization of CPs. Results showed that 2-CP removal efficiency of 99.4%, chemical oxygen demand(COD)removal efficiency of 93.0%, and methane yield of 0.22 L-CH4/g-COD could be obtained for a wide range of 2-CP loading rates(3.6–18.2 mmol L–1 d–1). Nearly complete anaerobic mineralization of 2-CP was achieved even in the absence of co-substrates,thereby greatly reducing the operation cost. This may be partly related to the attached-growth microorganisms in An FBR,allowing a higher biomass concentration and longer biomass retention time for enhanced 2-CP removal. Moreover, 16 S r RNA gene sequence analysis suggests that the An FBR harbored the potential dechlorinators(e.g., Anaeromyxobacter), phenoldegrading microbes(e.g., Comamonas and Syntrophobacter), and methanogens(e.g., Methanobacterium and Methanosaeta)after acclimation, which could cooperate effectively for 2-CP dechlorination and mineralization. Based on the identified intermediates, the possible mineralization pathway of 2-CP was proposed. These findings should be valuable to facilitate the engineering applications of An FBRs for removing CPs from wastewater.

关键词： anaerobic fixed-bed bioreactor chlorophenols degradation pathway intermediates mineralization

An empirical study of security issues in SSO server-side implementations

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Science China(Information Sciences) 2022年第7期65卷 253-255页

作者： Hui WANG Dawu GU Yuanyuan ZHANG yikun HU Lab of Cryptology and Computer Security Shanghai Jiao Tong University

Dear editor, Single sign-on (SSO) schemes have been widely used by major companies to manage service authorization and user authentication. They can enable third-party applications to obtain user information from a service provider to identify a user. The third-party application is often referred to as the relying party (RP), and the service provider is referred to as the identity provider (Id P). According to a recent study [1], OAuth and its extension Open ID connect (OIDC) are amongst the most widespread SSO protocols;

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Magnetic microstructure and coercivity mechanism of high performance Nd-Fe-B magnets

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Rare Metals 2006年第z1期25卷 630-632页

作者： ZHU Minggang LIU Xingmin FANG yikun LI Zhengbang LI Wei Central Iron & Steel Research Institute Beijing 100081 China Central Iron & Steel Research Institute Beijing 100081 China Central Iron & Steel Research Institute Beijing 100081 China Central Iron & Steel Research Institute Beijing 100081 China Central Iron & Steel Research Institute Beijing 100081 China

Magnetic microstructure of high performance Nd-Fe-B magnets was investigated by using magnetic force microscopy. The correlation between magnetic microstructure and coercivity for high performance Nd-Fe-B magnets was studied. It is found that the magnets with different coercivity mechanism take on different microstructures and magnetism. Moreover, the magnetic microstructures of high performance permanent magnets can be explained by the starting field theory model.

关键词： Nd-Fe-B permanent magnets magnetic domains reversal of magnetism starting field theory