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Response of Spatio-temporal Distribution of Fishery Resources to Mairne Environment in the Northern South China Sea

Animal Husbandry and Feed Science 2018年第5期10卷 311-317,320页

作者： Liu Zhunan Yu Jing South China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences/Guangdong Provincial Key Laboratory of Fishery Ecology and Environment/Scientific Observing and Experimental Station of South China Sea Fishery Resources and EnvironmentMinistry of Agriculture and Rural Affairs/Guangdong Engineering Technology Research Center of Marine Recreational Fishery/Key Laboratory of Marine Ranching TechnologyCAFSGuangzhou 510300China College of Marine Science Shanghai Ocean UniversityShanghai 201306China

[Objective] The paper was to investigate the spatio-temporal distribution of fishery resources in the northern South China Sea and to provide reference for scientific evaluation and effective protection of fishery resources in the northern South China Sea. [Methods] Based on monitoring data and satellite remote sensing data [including Sea Surface Temperature(SST), Chlorophyll a concentration(Chl a) and Sea Surface Wind(SSW)] in winter(January to February) and summer(August to September) in the northern South China Sea, the relationship between spatio-temporal distribution of fishery resources and marine environment was investigated by using Generalized Linear Models(GLM), fishing ground gravity and correlation analysis. [Results] The suitable SST and Chl a of light falling-net fishing ground in winter were 17-23°C and 0.2-0.6 mg/m3, respectively. The suitable SST and Chl a in summer were approximately 28°C and 0.2-1.0 mg/m3. Standardized Catch Per Unit Effort(SCPUE) was higher in summer(2-4) and lower in winter(1-3). From winter to summer, the fishing ground gravity migrated to the east about 1 °E. [Conclusion] The spatio-temporal distribution of fishery resources is related to eastern Hainan-western Guangdong upwelling and the coastal flow, caused by the monsoon in the northern South China Sea, and the major catch species of light falling-net.

关键词： Fishing ground Spatio-temporal distribution Marine environment Northern South China Sea

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Can X(5568) be a tetraquark state?

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Chinese Physics C 2016年第9期40卷 15-19页

作者：王伟朱瑞林 INPAC Shanghai Key Laboratory for Particle Physics and Cosmology Department of Physics and Astronomy Shanghai Jiao Tong University State Key laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences

Very recently, the D0 collaboration has reported the observation of a narrow structure, X（5568）, in the decay process X（5568）→ Bs^0π^±using the 10.4fb^-1 data of pp collision at √s= 1.96 TeV. This structure is of great interest since it is the first hadronic state with four different valence quark flavors, b, s, u, d. In this work,we investigate tetraquarks with four different quark flavors. Based on the diquark-antidiquark scheme, we study the spectroscopy of the tetraquarks with one heavy bottom/charm quark and three light quarks. We find that the lowest-lying S-wave state, a tetraquark with the flavor [su][bd] and the spin-parity J^P= 0^＋, is about 150 MeV higher than the X（5568）. Further detailed experimental and theoretical studies of the spectrum, production and decays of tetraquark states with four different flavors are vital to gain a better understanding of the nature and classification of hadron exotic states.

关键词： exotic state diquark tetraquark

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碳酸物种和氯离子对生物磷灰石磷酸钙成核的影响

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Science China Materials 2023年第7期66卷 2872-2884页

作者：陈红威王俊霖 A.E.Willaims-Jones 朱琴郑利锋赵晨晨刘子腾徐伟高魏海珍郭琳马晶 Key laboratory of Mesoscopic Chemistry of Ministry of Education School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China State Key laboratory for Mineral Deposits Research Department of Earth Sciences and EngineeringNanjing UniversityNanjing 210023China Department of Earth and Planetary Sciences McGill UniversityMontreal H3A 0E8Canada

磷灰石是骨骼和牙齿等生物硬组织的主要无机成分,对脊椎动物至关重要.生物系统的体液中普遍存在碳酸物种和Cl^(-)离子,了解这些阴离子对生物磷灰石成核过程的影响有助于解释生物矿化的控制作用.理论研究表明,Ca-O配位数在CaP成核和CaP... 详细信息

磷灰石是骨骼和牙齿等生物硬组织的主要无机成分,对脊椎动物至关重要.生物系统的体液中普遍存在碳酸物种和Cl^(-)离子,了解这些阴离子对生物磷灰石成核过程的影响有助于解释生物矿化的控制作用.理论研究表明,Ca-O配位数在CaP成核和CaP与添加剂的界面相互作用中是一个重要描述符.CaP团簇最外层的Ca^(2+)离子能够通过静电作用吸引碳酸物种和Cl^(-)离子,从而促进CaP相的形成.在碳酸物种和Cl^(-)离子存在的情况下,钙磷石(DCPD)可以转化为羟基磷灰石(HA).平衡氧同位素分馏和振动光谱分析结果表明,Cl^(-)离子掺杂的B型HA是最有可能的生物磷灰石.上述结果可以指导阴离子掺杂的具有生物功能的磷灰石材料的合成.

关键词： calcium phosphate Cl^(-)ion carbonate species coordination number surface energy simulated body fluid solution

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Azimuthal vector beam illuminating plasmonic tips circular cluster for surface-enhanced Raman spectroscopy

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Chinese Optics Letters 2023年第3期21卷 152-156页

作者：张录孟超杨灏张文定 Key laboratory of Light Field Manipulation and Information Acquisition Ministry of Industry and Information Technologyand Shaanxi Key Laboratory of Optical Information TechnologySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi'an 710129China

Noble metallic nanostructures with strong electric near-field enhancement can significantly improve nanoscale light-matter interactions and are critical for high-sensitivity surface-enhanced Raman spectroscopy[SERS].Here,we use an azimuthal vector beam[AVB]to illuminate the plasmonic tips circular cluster[PTCC]array to enhance the electric near-field intensity of the PTCC array,and then use it to improve SERS sensitivity.The PTCC array was prepared based on the self-assembled and inductive coupled plasmon[ICP]etching methods.The calculation results show that,compared with the linearly polarized beam[LPB]and radial vector beam excitations,the AVB excitation can obtain stronger electric near-field enhancement due to the strong resonant responses formed in the nanogap between adjacent plasmonic tips.Subsequently,our experimental results proved that AVB excitation increased SERS sensitivity to 10-13mol/L,which is two orders of magnitude higher than that of LPB excitation.Meanwhile,the PTCC array had excellent uniformity with the Raman enhancement factor calculated to be~2.4×10^[8].This kind of vector light field enhancing Raman spectroscopy may be applied in the field of sensing technologies,such as the trace amount detection.

关键词： surface-enhanced Raman spectroscopy plasmonic tips circular cluster array azimuthal vector beam surface plasmon polaritons

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Metallurgical properties of CaO–SiO_(2)–Al_(2)O_(3)–4.6wt%MgO–Fe_(2)O_(3)slag system pertaining to spent automotive catalyst smelting

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International Journal of Minerals,Metallurgy and Materials 2023年第5期30卷 886-896页

作者： Ruili Zheng Jianfang Lü Weifeng Song Mudan Liu Huashan Li Yong Liu Xianjin Lü Zhiyuan Ma School of Environmental Science and Engineering Guangdong University of TechnologyGuangzhou 510006China Institute of Resources Utilization and Rare Earth Development Guangdong Academy of SciencesGuangzhou 510650China State Key laboratory of Rare Metals Separation and Comprehensive Utilization Guangzhou 510650China Guangdong Key laboratory of Mineral Resources Development and Comprehensive Utilization Guangzhou 510650China

The metallurgical properties of the CaO–SiO_(2)–Al_(2)O_(3)–4.6wt%Mg O–Fe_(2)O_(3)slag system,formed by the co-treatment process of spent automotive catalyst(SAC)and copper-bearing electroplating sludge(CBES),were studied systematically in this paper.The slag structure,melting temperature,and viscous characteristics were investigated by Fourier transform infrared(FTIR)spectroscopy,Raman spectroscopy,Fact Sage calculation,and viscosity measurements.experimental results show that the increase of Fe_(2)O_(3)content(3.8wt%–16.6wt%),the mass ratio of CaO/SiO_(2)(m(CaO)/m(SiO_(2)),0.5–1.3),and the mass ratio of SiO_(2)/Al_(2)O_(3)(m(SiO_(2))/m(Al_(2)O_(3)),1.0–5.0)can promote the depolymerization of silicate network,and the presence of a large amount of Fe_(2)O_(3)in form of tetrahedral and octahedral units ensures the charge compensation of Al^(3+)ions and makes Al_(2)O_(3)only behave as an acid oxide.Thermodynamic calculation and viscosity measurements show that with the increase of Fe_(2)O_(3)content,m(Ca O)/m(SiO_(2)),and m(SiO_(2))/m(Al_(2)O_(3)),the depolymerization of silicate network structure and low-melting-point phase transformation first occur within the slag,leading to the decrease in melting point and viscosity of the slag,while further increase causes the formation of high-melting-point phase and a resultant re-increase in viscosity and melting point.Based on experimental analysis,the preferred slag composition with low polymerization degree,viscosity,and melting point is as follows:Fe_(2)O_(3)content of 10.2wt%–13.4wt%,m(CaO)/m(SiO_(2))of 0.7–0.9 and m(SiO_(2))/m(Al_(2)O_(3))of 3.0–4.0.This work provides a theoretical support for slag design in co-smelting process of SAC and CBES.

关键词： spent automotive catalyst co-treatment slag system slag structure melting temperature phase transformation viscosity

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Mitochondrial transcription factor A plays opposite roles in the initiation and progression of colitis-associated cancer

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Cancer Communications 2021年第8期41卷 695-714页

作者： Shirong Yang Xianli He Jing Zhao Dalin Wang Shanshan Guo Tian Gao Gang Wang Chao Jin Zeyu Yan Nan Wang Yongxing Wang Yilin Zhao Jinliang Xing Qichao Huang State Key laboratory of Cancer Biology and Department of Physiology and pathophysiology Fourth Military Medical UniversityXi’anShaanxi 710032P.R.China Department of General Surgery Tangdu HospitalFourth Military Medical UniversityXi’anShaanxi 710032P.R.China Department of Hepatobiliary Surgery Xijing HospitalFourth Military Medical UniversityXi’anShaanxi 710032P.R.China Department of Respiratory Medicine Xijing HospitalFourth Military Medical UniversityXi’anShaanxi 710032P.R.China

Background:Mitochondria are key regulators in cell proliferation and apoptosis.Alterations in mitochondrial function are closely associated with inflammation and tumorigenesis.This study aimed to investigate whether mitochondrial transcription factor A(TFAM),a key regulator of mitochondrial DNA transcription and replication,is involved in the initiation and progression of colitis-associated cancer(CAC).Methods:TFAM expression was examined in tissue samples of inflammatory bowel diseases(IBD)and CAC by immunohistochemistry.Intestinal epithelial cell(IEC)-specific TFAM-knockout mice(TFAM^(△IEC))and colorectal cancer(CRC)cells with TFAM knockdown or overexpression were used to evaluate the role of TFAMin colitis and the initiation and progression ofCAC.The underlying mechanisms of TFAMwere also explored by analyzingmitochondrial respiration function and biogenesis.Results:The expression of TFAM was downregulated in active IBD and negatively associated with the disease activity.The downregulation of TFAM in IECs was induced by interleukin-6 in a signal transducer and activator of transcription 3(STAT3)/miR-23b-dependent manner.In addition,TFAM knockout impaired IECturnover to promote dextran sulfate sodium(DSS)-induced colitis inmice.Of note,TFAMknockout increased the susceptibility of mice to azoxymethane/DSSinduced CAC and TFAM overexpression protected mice from intestinal inflammation and colitis-associated tumorigenesis.By contrast,TFAM expression was upregulated in CAC tissues and contributed to cell growth.Furthermore,it was demonstrated that β-catenin induced the upregulation of TFAM through c-Myc in CRC cells.Mechanistically,TFAMpromoted the proliferation of both IECs and CRC cells by increasing mitochondrial biogenesis and activity.Conclusions:TFAM plays a dual role in the initiation and progression of CAC,providing a novel understanding of CAC pathogenesis.

关键词： colitis colitis-associated cancer colorectal cancer energy metabolism inflammatory bowel diseases intestinal homeostasis mitochondrial transcription factor A(TFAM)

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Biology and pathology of the uterine micro environ merit and its natural killer cells

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Cellular & Molecular Immunology 2021年第9期18卷 2101-2113页

作者： Fuyan Wang Anita Ellen Qualls Laia Marques-Fernandez Francesco Colucci Department of Obstetrics&Gynaecology University of CambridgeNational Institute for Health Research Cambridge Biomedical Research CentreCambridge CB20SWUK Department of Biochemistry and Molecular Biology and Zhejiang Key Laboratory of PathophysiologySchool of MedicineNingbo UniversityNingbo 315211China Centre for Trophoblast Research University of CambridgeCambridge CB23EGUK

Tissues are the new frontier of discoveries in immunology.Cells of the immune system are an integral part of tissue physiology and immunity.Determining how immune cells inhabit,housekeep,and defend gut,lung,brain,liver,uterus,and other organs helps revealing the intimate details of tissue physiology and may offer new therapeutic targets to treat pathologies.The uterine microenvironment modulates the development and function of innate lymphoid cells[ILC,largely represented by natural killer(NK)cells],macrophages,T cells,and dendritic cells.These immune cells,in turn,contribute to tissue homeostasis.Regulated by ovarian hormones,the human uterine mucosa(endometrium)undergoes ~400 monthly cycles of breakdown and regeneration from menarche to menopause,with its fibroblasts,glands,blood vessels,and immune cells remodeling the tissue into the transient decidua.Even more transformative changes occur upon blastocyst implantation.Before the placenta is formed,the endometrial glands feed the embryo by histiotrophic nutrition while the uterine spiral arteries are stripped of their endothelial layer and smooth muscle actin.This arterial remodeling is carried out by invading fetal trophoblast and maternal immune cells,chiefly uterine NK(uNK)cells,which also assist fetal growth.The tran sformed arteries no Ion ger resp ond to mater nal stimuli and meet the increasi ng dema nds of the growing fetus.This review focuses on how the everchanging uterine microenvironment affects uNK cells and how uNK cells regulate homeostasis of the decidua,placenta development,and fetal growth.Determining these pathways will help understand the causes of major pregnancy complications.

关键词： Natural killer cells Uterine microenvironment Pregnancy Decidua uNK

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Accuracy improvement of calibration-free laser-induced breakdown spectroscopy

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Plasma Science and Technology 2019年第3期21卷 6-15页

作者：付洪波倪志波王华东贾军伟董凤忠 Anhui Provincial Key laboratory of Photonics Devices and Materials Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences Key laboratory of Environmental Optics & Technology Anhui Institute of Optics and Fine MechanicsChinese Academy of Sciences University of Science and Technology of China

Calibration-free laser-induced breakdown spectroscopy can overcome the matrix effect and the huge application prospects of in situ and on-line measurement, so it has been studied and applied to many analytical samples by numerous researchers since it was first proposed in 1999.However, its accuracy is always lower than other analytical techniques and traditional quantitative analysis methods of laser-induced breakdown spectroscopy. The goal of this paper is to review the improvement of accuracy in the experimental setup and spectral analysis,especially after 2010, but not limited to it. The main contents include the accurate measurement of spectral intensity, the spatial and temporal window of local thermodynamic equilibrium and the accurate calculation of temperature and electron density. Due to the requirement of one or more standard samples, the combination of standard samples and CF-LIBS is discussed as a separate section. Finally, a simple conclusion is offered to relevant researchers who want to use CF-LIBS for quantitative analysis.

关键词： CF-LIBS quantitative analysis accuracy self-absorption local thermodynamic equilibrium

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Chlorine-induced mixed valence of CuO_(x)/C to promote the electroreduction of carbon dioxide to ethylene

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Nano Research 2023年第7期16卷 8827-8835页

作者： Xin Wang Ming Miao Bowen Tang Haotian Duan Fulong Zhu Huigang Zhang Xian Zhang Wen-jin Yin Yongzhu Fu College of Chemistry Zhengzhou UniversityZhengzhou 450001China School of Physics and Electronic Science Hunan University of Science and TechnologyXiangtan 411201China State Key laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Qian Xuesen laboratory of Space Technology China Academy of Space TechnologyBeijing 100094China

Electrochemical conversion of CO_(2)(CO_(2)RR)into high-value fuel is identified as one of the promising approaches to achieve carbon neutrality.The synthesis of high-efficiency CO_(2)reduction electrocatalysts with high C_(2):C_(1) selectivity remains a field of intense interest.Previous studies have shown that the presence of Cu(I)is beneficial for the reduction of CO_(2)into C_(2)products.However,the stable presence of Cu(I)remains controversial,especially in the negative potential window.Here we report a simple and easily scalable catalyst precursor Cu_(2)(OH)_(3)Cl/C,which automatically forms in-situ chlorine-doped Cu/Cu_(2)O heterointerface during electrocatalysis.The catalyst not only exhibits a Faradaic efficiency of 33.03%but also provides a long-term stability of Cu^(+),gaining a stable electrolysis of 11 h,with an ethylene/methane ratio over 50.The experimental results and mechanistic studies confirm that the presence of Cl^(-)inhibits the reduction of Cu^(+),inducing the formation of Cu^(0)/Cu^(+),and reduces the reaction energy of the intermediate ^(*)CO dimerization,thereby facilitating the formation of C_(2)products.This work provides a feasible way to synthesize copper ions with long-term and stable positive charge in CO_(2)RR and expands a new way to synthesize ethylene industrial products in the future.

关键词： basic copper chloride chlorine dopant mixed-phase catalysts CO_(2)reduction reaction ethylene

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An analysis approach of mass and energy balance in a dual-reactor circulating fluidized bed system

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Chinese Journal of Chemical Engineering 2021年第12期34卷 18-26页

作者： Yangjun Wei Leming Cheng Liyao Li Institute for Thermal Power Engineering State Key Laboratory of Clean Energy UtilizationZhejiang UniversityHangzhou 310027China

An analysis approach considering gas-solids hydrodynamics,reaction kinetics and reacting species nonuniformity together in a dual-reactor system is presented for better understanding its mass and energy balance.It was achieved by a 3-dimensional comprehensive hydrodynamics and reaction model for the dual-reactor system,which was developed from the successfully verified 3-dimensional comprehensive combustion model for one circulating fluidized bed(CFB)system(Xu and Cheng,2019).The developed model and analysis approach was successfully used on a 1 MW circulating fluidized bed–bubbling fluidized bed(CFB-BFB)dual-reactor system.Results showed the sensible and chemical energy between two reactors as well as the energy distributions in each reactor were balanced and they agreed well with the experimental measurements.The analysis approach indicated energy balance had a close relationship with the mass transfer in the CFB-BFB dual-reactor system.It may be applied in a design and operation optimization for a dual-reactor system.

关键词： Mass and energy balance circulating fluidized bed–bubbling fluidized bed Dual-reactor Comprehensive model

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