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Journal of Integrative Plant Biology 2006年第4期48卷 409-414页

作者： Wei wang ji-Xun Guo jiang Feng Takehisa Oikawa Department of Ecology College of Environmental Sciences Peking University Beijing 100871 China Key Laboratory for Vegetation Ecology of the Ministry of Education Northeast Normal University Changchun 130024 China Institutes of Biological Sciences University of Tsukuba Tsukuba Ibaraki 305-8572 Japan

The loss of carbon through root respiration Is an Important component of grassland carbon budgets. However, few data are available concerning the contribution of root respiration to total soil respiration in grasslands in China. We Investigated seasonal variations of soil respiration rate, root blomaaa, microbial blomaaa C and organic C content of the soil In a semi-arid Leymus chinensis （Trin.） Tzvel. grassland of northeast China during the 2002 growing season （from May to September）. The linear regression relationship between soil respiration rate and root blomaaa was used to determine the contribution of root respiration to total soil respiration. Soil respiration rate ranged from 2.5 to 11.9 g C/m^2 per d with the maximum in late June and minimum In September. The microbial blomaaa C and organic C content of the soil ranged from 0.3 to 1.5 g C/m^2 and from 29 to 34 g C/kg respectively. Root blomaaa had two peaks, In early June （1.80 kg/m^2） and mid-August （1.73 kg/m^2）. Root respiration rate peaked In mid-August （6.26 g C/m^2 per d）, whereas microbial respiration rate peaked In late June （7.43 g C/m^2 per d）. We estimated that the contribution of root respiration to total soil respiration during the growing season ranged from 38% to 76%.

关键词： meadow steppe root biomass root respiration soil organic carbon soil respiration.

Site-specifically cleavage of oxidized insulin B chain with Zn(Ⅱ) ion studied by electrospray ionization mass spectrometry

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Chinese Chemical Letters 2007年第5期18卷 557-560页

作者： jiang jiang Yu Hua Mei Long Gen Zhu Wen ji wang College of Chemistry and Chemical Engineering Fuzhou University Fuzhou 350002 Chin College of Life Science Fujian Agriculture and Forestry University Fuzhou 350002 China State Key Laboratory of Coordination Chemistry Nanjing University Nanjing 210093 China

The electrospray ionization mass spectrometry and tandem mass spectrometry investigation showed that the binding sites of Zn^2＋ with oxidized insulin B chain are His 5, His 10, and Arg 22, which lead to the selective cleavages of the peptide bonds at Ash 3- Gin 4, His 5-Leu 6, Gly 8-Ser 9, and Glu 21-Arg 22 of oxidized insulin B chain.

关键词： Oxidized insulin B chain ZnCl2 Mass spectrometry Hydrolytic cleavage

Chlorophyll Fluorescence Detected Passively by Difference Reflectance Spectra of Wheat （Triticum aestivum L.） Leaf

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Journal of Integrative Plant Biology 2005年第10期47卷 1228-1235页

作者： Yong-jiang ZHANG Chun-jiang ZHAO Liang-Yun LIU ji-Hua wang Ren-Chao wang Institute of Agricultural Remote Sensing and Information Application Zhejiang University Hangzhou 310029 China National Engineering Research Center for Information Technology in Agriculture Beijing 100089 China

The chlorophyll fluorescence （CF） signature emitted from vegetation provides an abundance of information regarding photosynthetics activity and has been used as a powerful tool to obtain physiological information of plant leaves in a non-invasive manner. CF is difficult to quantify because the CF signal is obscured by reflected light. In the present study, the apparent reflectance spectra of wheat （Triticum aestivum L.） leaves were measured under illuminations with and without filtering by three specially designed long-wave pass edge filters; the cut-off wavelengths of the three filters were 653.8, 678.2, and 694. l nm at 50% of maximum transmittance. The CF spectra could be derived as the reflectance difference spectra of the leaves under illuminations with and without the long wave pass edge filters. The ratio of the reflectance difference at 685 and 740 nm （Dif685/Dif740） was linear correlated with the CF parameters （maximal photochemical efficiency Fv/Fm, and the yield of quantum efficiency） measured by the modulated fluorometer. In addition, the ratio reflected the water stress status of the wheat leaf, which was very high when water deficiency was serious. This method provides a new approach for detecting CF and the physiological state of crops.

关键词： chlorophyll fluorescence (CF) passive remote sensing reflectance spectrum wheat.

Excellent energy storage properties in non-stoichiometric Bi_(0.5)Na_(0.5)TiO_(3)-based relaxor ferroelectric ceramics

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Chinese Chemical Letters 2024年第7期35卷 470-472页

作者： Shunshun jiang ji Zhang jing wang Shan-Tao Zhang School of Materials Science and Engineering Nanjing University of Science&TechnologyNanjing 210094China State Key Laboratory of Mechanics and Control of Mechanical Structures College of Aerospace EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016China National Laboratory of Solid State Microstructures Department of Materials Science and EngineeringCollege of Engineering and Applied Science&Jiangsu Key Laboratory of Artificial Functional Materials&Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China

The rapid development of high-power and pulsed-power techniques inspires extensive investigates on high-performance ceramic-based ***,the low recoverable energy density(Wrec)hampers their wider ***,the non-stoichiometric Bi_(0.5)Na_(0.5)TiO_(3)-based ceramics were designed and *** proper introduction of oxygen vacancies facilitated activating defect dipole,giving rise to reduced remanent ***,the optimal composition exhibited an exceptional high Wrec of 8.3 J/cm^(3),a high efficiency of 85%,and excellent anti-fatigue and thermal *** work provides an efficient approach to explore ceramic capacitors with high capacitive energy storage performances.

关键词： Non-stoichiometric Bi_(0.5)Na_(0.5)TiO_(3) Ceramic capacitor Energy density Thermal stability

Cannabinoids receptor-independently restored respiratory rhythm from diazoxide-induced respiratory silence in brainstem slices of newborn rats

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Cannabinoids receptor-independently restored respiratory rhy...

Electrifying the future:the advances and opportunities of electrocatalytic carbon dioxide reduction in acid

中国神经科学学会第四次会员代表大会暨第八届全国学术会议

作者： Lin wang~1,An-Dong LU~2,Li-Li HOU~1,Yong-Hua CHEN~1,Xu-jiao ZHOU~1,Dong-Ying QIU~1,Ke-Ming ZHU~2,ji-jiang wang~(1,*) 1 The State Key Laboratory of Medical Neurobiology,Zhongshan Hospital,Shanghai Medical College,Fudan University. Shanghai,200320. 2 Department of Anesthesiology,Shanghai Changhai Hospital,Second Military Medical Univeristy.Shanghai,200433.

Arachidonoylethanolamide(AEA),a member of endogenous cannabinoid family,has been found to inhibit ATP-dependent potassium channels(K) receptor-independently in follicle-enclosed xenopus oocytes.K are widely expressed in animal tissues including the central nervous system,and are involved in the regulation of a variety of physiological ***,nothing has been known about whether cannabinoids can regulate physiological functions via their receptor-independent inhibition of K in living animal *** brainstem slices of newborn rats with respiratory-like rhythm,the present study tested the hypothesis that in mammalian respiratory rhythmogenesis centers cannabinoids are involved in the maintenance of respiratory rhythm via acting as inhibitors of ***(10μM),a selective opener of K,was continuously applied to brainstem slices to induce respiratory *** have demonstrated that glybenclamide(10μM),a selective inhibitor of K,could fully restore respiratory rhythm from the diazoxideinduced respiratory *** effect of glybenclamide was mimicked by 10μM AEA,100 nM M1438(a selective CB1 cannabinoid agonist),and 10μM AM1241(a selective CB2 cannabinoid agonist),*** effect of M1438 was not prevented by AM251(100 nM),a selective CB1 cannabinoid antagonist;and the effect of AM 1241 was not prevented by AM630(10μM),a selective CB2 cannabinoid *** results suggested that in respiratory rhythmogenesis centers the balance between the opening state and the closing state of K is critical in the maintenance of respiratory rhythm,and endogenous cannabinoids may be involved in the regulation of central respiratory rhythm by acting as K blocker in respiratory rhythmogenesis neurons.

关键词： respiratory cannabinoid potassium channels ATP

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Science China Chemistry 2023年第12期66卷 3426-3442页

作者： Runhao Zhang Haoyuan wang Yuan ji Qiu jiang Tingting Zheng Chuan Xia Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001China Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China

Transforming carbon dioxide(CO_(2))into products using renewable electricity is a crucial and captivating quest for a green and circular *** with commonly used alkali electrolytes,acidic media for electrocatalytic CO_(2) reduction(CO_(2)RR)boasts several advantages,such as high carbon utilization efficiency,high overall energy utilization rate,and low carbonate formation,making it a compelling choice for industrial ***,the acidic CO_(2)RR also struggles with formidable hurdles,encompassing the fierce competition with the hydrogen evolution reaction,the low CO_(2) solubility and availability,and the suboptimal performance of *** review provides a comprehensive overview of the CO_(2)RR in acidic *** elucidating the underlying regulatory mechanism,we gain valuable insights into the fundamental principles governing the acidic CO_(2)***,we examine cutting-edge strategies aimed at optimizing its performance and the roles of reactor engineering,especially membrane electrode assembly reactors,in facilitating scalable and carbon efficient ***,we present a forward-looking perspective,highlighting the promising prospects of acidic CO_(2)RR research in ushering us towards a carbon-neutral society.

关键词： electrocatalytic CO_(2)reduction acidic electrolyte microenvironment alkali metal cations electrolysers

Abandonment and Recovery Operation of Steel Lazy-Wave Riser in Deepwater by Controlled Vessel and Cable Velocity Rate

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China Ocean Engineering 2023年第1期37卷 29-41页

作者： GU ji-jun HUANG Jun GAO Lei CHEN Lei-lei jiA ji-chuan wang Shu-jiang College of Mechanical and Transportation Engineering China University of Petroleum-BeijingBeijing 102249China CNOOC Research Institute Beijing 100028China

Evaluation of abandonment and recovery operation of steel lazy-wave riser in deepwater is presented in this *** calculation procedure includes two single continuous SLWR and cable segments, which are coupled together to form the overall mathematical model. Then the equilibrium equations of SLWR and cable are established based on minimum total potential energy principle. The coupled equations are discretized by the finite difference method and solved by Newton-Raphson technique in an iterative manner. The present method is validated by well-established commercial code OrcaFlex. Recovery methods by considering different ratios of vessel’s moving velocity to cable’s recovery velocity are evaluated to optimize the abandonment and recovery operation. In order to keep the tension more stable during the recovery process, the rate ratio before leaving the seabed is increased, and the rate ratio after leaving the seabed is reduced.

关键词： steel lazy-wave riser abandonment recovery

A Novel Quarter-Circular Arc Multi-Direction Piezoelectric VEH and Its Theoretical Model

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Chinese Journal of Electronics 2021年第1期30卷 185-191页

作者： ZHU Yucheng HU jiayang BAI Yunshan ZHAO jiang ji Xincun wang Debo Nanjing University of Posts and Telecommunication Department of Physics Army Logistics University of PLA

A quarter-circular arc piezoelectric Vibration energy harvester(VEH) based on nonlinear geometry is proposed with both bending moment and torque deformation mode, so it can effectively absorb multi-directional vibration at the same resonance frequency. The theoretical model of quarter-circular arc piezoelectric VEH is established to study the resonance frequency and the output voltage. In order to demonstrate multi-directional performance of the quarter-circular arc VEH, the stress distribution is compared with that of the traditional piezoelectric VEH in multi-direction vibration, and the output voltage of the circular arc piezoelectric VEH are relatively increased 267.26% in X-direction, 463.18% in Ydirection, and 17.24% in Z-direction. The external load is equipped in circuit to measure output power, whose matching resistance is around 21 k?, and the maximum output powers are 7.57 m W in X-direction, 2.39 m W in Y-direction, and 9.93 m W in Z-direction.

关键词： multidirectional vibration quarter-circular arc piezoelectric VEH multidirection vibration bending moment vibrations quarter-circular arc VEH power 7.57 mW piezoelectric VEH resonance frequency nonlinear equations quarter-circular arc multidirection piezoelectric VEH quarter-circular arc piezoelectric vibration energy harvester power 9.93 mW nonlinear geometry torque deformation mode piezoelectric transducers energy harvesting multidirectional performance power 2.39 mW

Methane hydrate crystal growth on shell substrate

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Chinese Journal of Chemical Engineering 2022年第3期35卷 50-61页

作者： Xin jiang Baojiang Sun Zhiyuan wang Wantian Zhou jiakai ji Litao Chen School of Petroleum Engineering China University of Petroleum(East China)Qingdao 266580China Key Laboratory of Unconventional Oil and Gas Development China University of Petroleum(East China)Qingdao 266580China

Hydrate crystals growth on the surface of methane bubble(hydrate film)in pure water was studied by using a high-pressure visible microscope under the conditions of subcoolingΔT=5.44-13.72 K and methane concentration differenceΔC=2.92-8.19 mol·L^(-1).It was found the hydrate film is porous and the hydrate crystals grow towards the liquid phase on the film *** crystal morphology and growth rate are affected byΔT andΔ***ΔT8.82 K orΔC>4.12 mol·L^(-1),the hydrate crystals grow in dendritic shape,and the axial growth rate increases first and then *** perimeter and area of the growing hydrate crystals were measured,and the fractal dimension of hydrate crystal under differentΔC andΔT was *** results show that the fractal dimension of columnar hydrate crystal is greater than ***3.87 mol·L^(-1)4.77 mol·L^(-1),ΔT<8.52 K,the fractal dimension of dendritic hydrate crystal is less than 2.

关键词： Methane Hydrate Crystal growth Morphology Fractal dimension

Recent progress on the recycling technology of Li-ion batteries

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Journal of Energy Chemistry 2021年第4期30卷 391-419页

作者： Yuqing wang Ning An Lei Wen Lei wang Xiaotong jiang Feng Hou Yuxin Yin ji Liang Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjin 300072China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina China Automotive Technology&Research Center Co. LtdTianjin 300300China Tianjin Lishen Battery Joint-Stock Limited Company Tianjin 300384China Institute for Superconducting&Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongInnovation CampusNorth WollongongNSW 2500Australia

Lithium-ion batteries(LIBs)have been widely applied in portable electronic devices and electric *** the booming of the respective markets,a huge quantity of spent LIBs that typically use either LiFePO_(4) or Li N_(x)Co_(y)Mn_(z)O_(2) cathode materials will be produced in the very near future,imposing significant pressure for the development of suitable disposal/recycling technologies,in terms of both environmental protection and resource *** this review,we firstly do a comprehensive summary of the-state-of-art technologies to recycle Li N_(x)Co_(y)Mn_(z)O_(2) and LiFePO_(4)-based LIBs,in the aspects of pretreatment,hydrometallurgical recycling,and direct regeneration of the cathode *** closed-loop strategy for cycling cathode materials has been regarded as an ideal approach considering its economic benefit and environmental ***,as for the exhausted anode materials,we focus on the utilization of exhausted anode materials to obtain other functional materials,such as ***,the existing challenges in recycling the LiFePO_(4) and Li N_(x)Co_(y)Mn_(z)O_(2) cathodes and graphite anodes for industrial-scale application are discussed in detail;and the possible strategies for these issues are *** expect this review can provide a roadmap towards better technologies for recycling LIBs,shed light on the future development of novel battery recycling technologies to promote the environmental benignity and economic viability of the battery industry and pave way for the large-scale application of LIBs in industrial fields in the near future.

关键词： Li ion battery Recycling Cathode Anode