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Effect of different metal element substitution on microstructural and comprehensive hydrogen storage performance of Ti0.9Zr0.1Mn0.95Cr0.7V0.2M0.15（M=Fe,Co,ni,Cu,Mo） alloy

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Progress in Natural Science:Materials International 2024年第2期34卷 304-313页

作者： Baojia ni Jianhui Zhu Guo Yang Linhua Xu Haiyan Leng Wei Liu Taijun Pan Xingbo Han Lijun Lv School of Materials Science and Engineering Changzhou University Shanghai Institute of Applied Physics Chinese Academy of Sciences School of Materials Science and Engineering Shanghai University

Hydrogen is now being used as a renewable clean energy *** of the main issues with the application of hydrogen energy is a shortage of security and efficient hydrogen storage ***-based alloys are considered promising hydrogen storage materials,but their comprehensive hydrogen storage properties and cyclic stable performance limit their further practical *** hydrogen storage properties of alloys can be enhanced by substituting transition metal ***,the comprehensive hydrogen storage performance of the Ti0.9Zr0.1Mn0.95Cr0.7V0.2M0.15（M=Fe,Co,ni,Cu,Mo） alloys was systematically investigated according to the Mn element on the B side is partially replaced by variety of transition metal *** M=ni alloy,which showed the highest hydrogen storage capacity among the group of alloys,was used to explore cycle *** plateau pressures of the series alloys decreased in order,Fe>Co>ni>Cu>*** of hydrogen absorption kinetics,all of the alloys can reach full hydrogen absorption saturation within 400 s at 303 *** Ti0.9Zr0.1Mn0.95Cr0.7V0.2Mo0.15alloy possessed the fastest hydrogen absorption kinetic rate(t0.9=65 s) and the smallest hysteresis *** suggests that the substitution of Mo elements is effective in improving the hysteresis of the Laves phase *** the series of alloys,the M=ni alloy exhibited the best overall hydrogen storage performance,which hydrogen storage capacity can reach 1.81 wt% and 97% of its capacity is kept after 100 cycles.

关键词： Cyclic stable performance Element substitution Hydrogen storage properties Laves phase TiMn-Based hydrogen storage alloy

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The 8th National Gastric Cancer Academic Conference: focus on specification, translational research, and plan

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Chinese Journal of Cancer Research 2013年第3期25卷 368-372页

作者： ni Dai Beijing Cancer Hospital and Institute Peking University School of Oncology Key laboratory of Carcinogenesis and Translational Research (Ministry of Education)

The 8th National Gastric Cancer Academic Conference, organized by Gastric Cancer Association of Chinese Anti- cancer Association and co-hosted by Beijing Cancer Hospital, Chinese Journal of Cancer Research （CJCR）, Translational Gastrointestinal Cancer （TGC）, Chinese Journal of Gastrointestinal Surgery, and Chinese Journal of Practical Surgery, was held at Beijing International Convention Center from June 15 to 16, 2013. Prof. Dr. Jiafu Ji, MD, FACS, the president of Gastric Cancer Committee, Chinese Anti-Cancer Association （CACA） and Editor-in-Chief of TGC, was the chairman of the conference （Figure 1）. Prof. Dr. Yan Sun, MD, academician of Chinese Academy of Engineering （CAE）, was the honorary chairman of the

关键词： Figure and plan translational research focus on specification The 8th National Gastric Cancer Academic Conference

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Stronger Versions of Sensitivity for Minimal Group Actions

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Acta Mathematica Sinica,English Series 2021年第12期37卷 1933-1946页

作者： Jian LI Yi ni YANG Department of Mathematics Shantou UniversityShantou 515063P.R.China

We study several stronger versions of sensitivity for minimal group actions,including nsensitivity,thick n-sensitivity and blockily thick n-sensitivity,and characterize them by the regionally proximal relation.

关键词： Sensitivity minimal group actions maximal equicontinuous factors regionally proximal relation

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Formaldehyde intermediate participating in the conversion of methanol to aromatics over zinc modified H-ZSM-5

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Journal of Energy Chemistry 2021年第3期30卷 174-178页

作者： Youming ni Wenliang Zhu Zhongmin Liu National Engineering Laboratory for Methanol to Olefins Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Metal-modified H-ZSM-5 has a high selectivity of aromatics in methanol to aromatics(MTA)reaction,which is often attributed to the metal promoting the aromatization of intermediate ***,the effect of methanol dehydrogenation on aromatics formation over these catalysts is rarely ***,we report that HCHO,which is formed by methanol dehydrogenation over Zn/H-ZSM-5 prepared by Zn impregnation,can participate in the synthesis of *** conversion can produce more aromatics than olefins(propylene or ethylene)conversion over Zn/H-ZSM-5,indicating the conventional MTA pathway including methanol-to-olefins and olefins-to-aromatics is not ***,an MTA mechanism including the conventional pathway and the methanol and HCHO coupling pathway is systematically proposed.

关键词： Methanol Formaldehyde Aromatics Zn H-ZSM-5

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Suppression of partially irreversible phase transition in O′3-Na_(3)ni_(2)SbO_(6)cathode for sodium-ion batteries by interlayered structural modulation

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Journal of Energy Chemistry 2022年第10期31卷 436-444,I0011页

作者： Jingjie Feng Jiajie Li ni Wen Siyuan Chen Jian Wu Qinghua Fan Youzhong Dong Quan Kuang Yanming Zhao School of Physics South China University of TechnologyGuangzhou 510640GuangdongChina South China Institute of Collaborative Innovation South China University of TechnologyDongguan 523808GuangdongChina Guandong Provincial Key Laboratory of Advanced Energy Storage Materials South China University of TechnologyGuangzhou 510640GuangdongChina

As a promising cathode material for sodium ion batteries,honeycomb-ordered layered Na_(3)ni_(2)Sb O_(6)still suffers from rapid capacity fading because of partially irreversible phase ***,a substitution of Na+by Rb+with a larger ionic radius in honeycomb layered Na_(3)-xRbxni_(2)Sb O_(6)is proposed to modulate the interlayer *** results unveil that biphasic transition reversibility of the intermediate P′3phase is substantially enhanced,and the structure evolution behavior during the charge/discharge process changes due to the structural modulation,which contributes to a suppression of the unfavorable O_(1)phase and an alleviation of the lattice ***,Rb substituted samples exhibited an improved Na+(de)intercalation thermodynamics and *** to the modifications,the sample with optimized Rb content delivers superior cycle stability and rate capacity,demonstrating a feasible strategy for suppressing irreversible phase transition and developing high-performance honeycomb layered materials for sodium ion batteries.

关键词： Sodium-ion batteries High-voltage electrochemistry Honeycomb-ordered materials Rb doping Structural modulation

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Modern phenomics to empower holistic crop science, agronomy, and breeding research

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Journal of Genetics and Genomics 2024年第8期51卷 790-800页

作者： ni Jiang Xin-Guang Zhu Institute of Genetics and Developmental Biology Chinese Academy of SciencesBeijing 100101China Center of Excellence for Molecular Plant Sciences Chinese Academy of SciencesShanghai 200032China

Crop phenomics enables the collection of diverse plant traits for a large number of samples along different time scales,representing a greater data collection throughput compared with traditional *** modern crop phenomics use different sensors to collect reflective,emitted,and fluorescence signals,etc.,from plant organs at different spatial and temporal *** multi-modal,high-dimensional data not only accelerates basic research on crop physiology,genetics,and whole plant systems modeling,but also supports the optimization of field agronomic practices,internal environments of plant factories,and ultimately crop *** challenges and opportunities facing the current crop phenomics research community include developing community consensus or standards for data collection,management,sharing,and processing,developing capabilities to measure physiological parameters,and enabling farmers and breeders to effectively use phenomics in the field to directly support agricultural production.

关键词： Crop phenomics High-throughput phenotyping Traits Crop designer breeding Agronomy

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New Progress in High-Precision and High-Resolution Seismic Exploration Technique in Coal Industry of China

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Acta Geologica Sinica(English Edition) 2000年第2期74卷 311-315页

作者： ni Bin China National Administration of Coal Geology Beijing 100024

In the past twenty years, the proportion of coal in primary-energy consumption in China is generally between 71.3% and 76.5%. The output of coal was 1.374 billion tons in 1996, and 1.21 tons in 1998, which ranked first in the world. Now coal is mined mainly with mechanization in China, which is planned to reach 80% in major State-owned coal mines in 2000 according to the planning of the government (Li et al., 1998; Tang Dejin, 1998).

关键词： coal high-precision seismic exploration technique progress

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Structural characteristics of river networks and their relations to basin factors in the Yangtze and Yellow River basins

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Science China(Technological Sciences) 2019年第11期62卷 1885-1895页

作者： CHEN XiaBin WANG YiChu ni JinRen The Key Laboratory of Water and Sediment Sciences Ministry of EducationCollege of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China Beijing Innovation Center for Engineering Science and Advanced Technology(BIC-ESAT) Peking UniversityBeijing 100871China

The integration of rivers and basins highly implies the possible existence of certain relationships between hierarchical characteristics of river networks and primary basin *** we investigated river networks in two large basins,the Yangtze River and the Yellow River,characterized with basic factors such as annual precipitation,slope,soil erodibility and *** analysis demonstrated a fair self-similarity of river networks at the stream-order 1-5 in both rivers,described by the structural parameters including bifurcation ratio,side-branching ratio,drainage density,and length of *** precipitation,basin slope was essential in shaping river networks in both basins,showing a significant positive correlation(R^2=0.39-0.85)to bifurcation ratio,side-branching ratio,and drainage *** the same basin slope(5°-15°),the higher soil erodibility and sparse vegetation would promote greater side-branching ratio and drainage density in the Yellow River,which were estimated 11.97%and 63.70%larger,respectively than those in the Yangtze *** study highlights the importance to formulate basin-specific strategies for water and soil conservation in terms of different structures of river networks.

关键词： river network structural characteristics basin factor Yangtze River Yellow River

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Magneto-rheological elastomer (MRE) based composite structures for micro-vibration control

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Earthquake Engineering and Engineering Vibration 2010年第3期9卷 345-356页

作者： YQ ni ZG Ying ZH Chen Department of Civil and Structural Engineering The Hong Kong Polytechnic University Hung Horn Kowloon Hong Kong China Department of Mechanics Zhejiang University Hangzhou 310027 China

Magneto-rheological elastomers （MILEs） are used to construct composite structures for micro-vibration control of equipment under stochastic support-motion excitations. The dynamic behavior of MREs as a smart viscoelastic material is characterized by a complex modulus dependent on vibration frequency and controllable by external magnetic fields. Frequency-domain solution methods for stochastic micro-vibration response analysis of the MRE-based structural systems are developed to derive the system frequency-response function matrices and the expressions of the velocity response spectrum. With these equations, the root-mean-square （RMS） velocity responses in terms of the one-third octave frequency band spectrum can be calculated. Further, the optimization problem of the complex moduli of the MRE cores is defined by minimizing the velocity response spectra and the RMS velocity responses through altering the applied magnetic fields. Simulation results illustrate the influences of MRE parameters on the RMS velocity responses and the high response reduction capacities of the MRE-based structures. In addition, the developed frequency-domain analysis methods are applicable to sandwich beam structures with arbitrary cores characterized by complex shear moduli under stochastic excitations described by power spectral density functions, and are valid for a wide frequency range.

关键词： magneto-rheological elastomer (MRE) micro-vibration control equipment composite structure sandwich beam stochastic excitation

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On Behaviors of Functionally Graded SMAs under Thermo-Mechanical Coupling

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Acta Mechanica Solida Sinica 2016年第1期29卷 46-58页

作者： Bingfei Liu Pengcheng ni Wei Zhang Airport College Civil Aviation University of China Sino-European Institute of Aviation Engineering Civil Aviation University of China

An analytical solution is obtained for the Functionally Graded Shape Memory Alloy （FG-SMA） composites subjected to thermo-mechanical coupling. Young＇s modulus and thermal expansion coefficient of the material are assumed to vary in different forms of power function through the thickness, with the Poisson＇s ratio being constant. An SMA constitutive model is combined with the averaging techniques of composite to determine the mechanical properties of the FG-SMA composites. Different phase transformation steps and the corresponding stress distributions through the thickness direction are given. The results show that the average stresses decrease as the transformations proceed.

关键词： functionally graded SMAs phase transformation constitutive model

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