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Metal nanoparticles decorated CoFe-(oxy)hydroxysulfides nanosheets fabricated by a general strategy for electrocatalytic water splitting

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Journal of Energy Chemistry 2025年第1期100卷 26-38页

作者： Xiaodong Yang Haochen Shen Xiaoming Xiao Zhichao Li qi zhou Wei Yang Bin Jiang Yongli Sun Luhong Zhang Zhenhua Yan School of Chemical Engineering and Technology Tianjin University Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Nankai University

This study presents a novel method to fabricate metal-decorated,sulfur-doped layered double hydroxides （M/SLDH） through spontaneous redox and sulfurization *** developed Ag/SLDH and Pt/SLDH catalysts with abundant heterogeneous interfaces and hierarchical nanostructures demonstrated outstanding oxygen evolution reaction （OER） and hydrogen evolution reaction （HER） performance,achieving low overpotentials of 212 and 35 mV at 10 mA cm-2in 1 M KOH,*** both anode and cathode in water splitting,they required only 1.47 V to reach 10 mA cm-2and exhibited high structural robustness,maintaining stability at 1000 mA cm-2for 300 ***-situ Raman analysis revealed that the synergistic effects of metal nanoparticles and S doping significantly promote the transformation into the S-Co1-xFexOOH layer,which serves as the active phase for water ***,ultraviolet photoelectron spectroscopy （UPS） and density functional theory （DFT） analyses indicated that incorporating metal nanoparticles and S doping increase electron density near the Fermi level and reduce reaction energy barriers,thus enhancing intrinsic OER and HER *** study provides a scalable strategy for synthesizing high-performance electrocatalysts for water splitting,with promising potential for broader applications.

关键词： Ultraviolet photoelectron spectroscopy

A chromosome minimalist view of genome regulation and evolution based on mouse chromosome engineering

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Zoological Research 2022年第6期43卷 949-951页

作者： qi zhou MOE Laboratory of Biosystems Homeostasis and Protection and Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology Life Sciences InstituteZhejiang UniversityHangzhouZhejiang 310058China Center for Reproductive Medicine 2nd Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouZhejiang 310052China Evolutionary&Organismal Biology Research Center School of MedicineZhejiang UniversityHangzhouZhejiang 310058China

What is the minimum number of chromosomes that a eukaryotic species can tolerate?This question has long fascinated biologists as chromosomal rearrangements are associated with both speciation and various genetic *** a... 详细信息

关键词： evolution Kunming chromosome

On the origin and evolution of new genes——a genomic and experimental perspective

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Journal of Genetics and Genomics 2008年第11期35卷 639-648页

作者： qi zhou Wen Wang CAS-Max Planck Junior Research Group State Key Laboratory of Genetic Resources and Evolution Kunming Institute of Zoology Chinese Academy of Sciences Kunming 650223 China

The inherent interest on the origin of genetic novelties can be traced back to Darwin. But it was not until recently that we were allowed to investigate the fundamental process of origin of new genes by the studies on newly evolved young genes. Two indispensible steps are involved in this process： origin of new gene copies through various mutational mechanisms and evolution of novel functions, which fur- ther more leads to fixation of the new copies within populations. The theoretical framework for the former step formed in 1970s. Ohno proposed gene duplication as the most important mechanism producing new gene copies. He also believed that the most common fate for new gene copies is to become pseudogenes. This classical view was validated and was also challenged by the characterization of the first functional young gene jingwei in Drosophila. Recent genome-wide comparison on young genes of Drosophila has elucidated a compre- hensive picture addressing remarkable roles of various mechanisms besides gene duplication during origin of new genes. Case surveys revealed it is not rare that new genes would evolve novel structures and functions to contribute to the adaptive evolution of organisms. Here, we review recent advances in understanding how new genes originated and evolved on the basis of genome-wide results and ex- perimental efforts on cases. We would finally discuss the future directions of this fast-growing research field in the context of functional genomics era.

关键词： origin of new genes gene duplication de novo origination chimeric genes

Theoretical Investigation of Uniform and Non-uniform Penetrable Sphere Fluid

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Communications in Theoretical Physics 2006年第2X期46卷 323-331页

作者： zhou Shi-qi Institute of Modern Statistical Mechanics Hunan University of Technology Zhuzhou 412008 China

A bridge function approximation is proposed for a single-component fluid consisting of penetrable sphere interacting via a potential that remains finite and constant for center-center distance smaller than the particle diameter and is zero otherwise. The radial distribution function from the Ornstein-Zernike integral equation combined with the present bridge function approximation is in satisfactory agreement with the corresponding simulation data for all of the investigated state points. The presently calculated excess Helmholtz free energy respectively based on virial route and compressibility route is highly self-consistent, and is in very good agreement with simulational results for the case of low temperatures. The present bridge function approximation, combined with the bridge density functional approximation, can reproduce very accurately density profiles of the penetrable sphere fluid confined in a hard spherical cavity for all the cases where simulational results are available.

关键词： complex fluids structure density profile

Influence of Solvent-Solvent and Solute-Solvent Interaction Properties on Solvent-Mediated Potential

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Communications in Theoretical Physics 2005年第2X期44卷 365-370页

作者： zhou Shi-qi Institute of Modern Statistical Mechanics Zhuzhou Institute of Technology Zhuzhou 412008 China

A recently proposed universal calculational recipe for solvent-mediated potential is applied to calculate excess potential of mean force between two large Lennard-Jones (LJ) or hard core attractive Yukawa particles immersed in small LJ solvent bath at supercritical state. Comparison between the present prediction with a hypernetted chain approximation adopted for solute-solute correlation at infinitely dilute limit and existing simulation data shows high accuracy for the region with large separation, and qualitative reliability for the solute particle contact region. The calculational simplicity of the present recipe allows for a detailed investigation on the effect of the solute-solvent and solvent-solvent interaction details on the excess potential of mean force. The resultant conclusion is that gathering of solvent particles near a solute particle leads to repulsive excess PMF, while depletion of solvent particles away from the solute particle leads to attractive excess PMF, and minor change of the solvent-solvent interaction range has large influence on the excess PMF.

关键词： excess potential of mean force density function theory

Exploring point zero:a study of 20 Chinese cities

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Geo-Spatial Information Science 2020年第3期23卷 258-272,I0006页

作者： qi zhou Mingjian Zhai Wenhao Yu School of Geography and Information Engineering China University of GeosciencesWuhanChina

A point zero represents a central geographical location of a city,which is essential for not only measuring distances,but also understanding the historical and/or cultural origin of a *** extensive studies have focused on delineating city centers,to our knowledge,no studies have paid attention to determining the location for a point ***,our goal is to investigate various potential approaches for identifying such a ***,three typical approaches,geometric-based,topological-based,and thematic-based,are proposed to recommend point zeros and different scales,administrative divisions,kernel density sur-faces,and regions enclosed by ring roads are used for *** effectiveness of different approaches and scales are evaluated and compared by calculating an offset distance between recommended and actual point zero locations in 20 Chinese *** the different approaches,the average offset distance for most Chinese cities is 2-4 km,and the thematicbased approach performs *** the topological-based and thematic-based approaches are less sensitive to the analyzed scale than the geometric-based *** results indicate that it is possible to determine the approximate location for a point zero from geographical *** on the buffer zone of such a location,an actual point zero may further be recommended.

关键词： Point zero city center geographical data Chinese cities

Derivation and application of pluripotent stem cells for regenerative medicine

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Science China(Life Sciences) 2016年第6期59卷 576-583页

作者： Jiaqiang Wang qi zhou State Key Laboratory of Stem cell and Reproductive Biology Institute of Zoology Chinese Academy of Sciences

Pluripotent stem cells(PSCs) are cells that can differentiate into any type of cells in the body, therefore have valuable promise in regenerative medicine of cell replacement therapies and tissue/organ engineering. PSCs can be derived either from early embryos or directly from somatic cells by epigenetic reprogramming that result in customized cells from patients. Here we summarize the methods of deriving PSCs, the various types of PSCs generated with different status, and their versatile applications in both clinical and embryonic development studies. We also discuss an intriguing potential application of PSCs in constructing tissues/organs in large animals by interspecies chimerism. All these emerging findings are likely to contribute to the breakthroughs in biological research and the prosperous prospects of regenerative medicine.

关键词： pluripotent stem cells regenerative medicine reprogramming interspecies chimerism

Holographic energy loss near critical temperature in an anisotropic background

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Communications in Theoretical Physics 2023年第10期75卷 90-99页

作者： qi zhou Ben-Wei Zhang Key Laboratory of Quark and Lepton Physics(MOE)and Institute of Particle Physics Central China Normal UniversityWuhan 430079China

We study the energy loss of a quark moving in a strongly coupled quark gluon plasma under the influence of *** heavy quark drag force,diffusion coefficient,and jet quenching parameter are calculated using the Einstein–Maxwell-dilaton model,where the anisotropic background is characterized by an arbitrary dynamical parameter *** findings indicate that as the anisotropic factor A increases,the drag force and jet quenching parameter both increase,while the diffusion coefficient ***,we observe that the energy loss becomes more significant when the quark moves perpendicular to the anisotropy direction in the transverse *** enhancement of the rescaled jet quenching parameters near critical temperature Tc,as well as drag forces for a fast-moving heavy quark is observed,which presents one of the typical features of quantum chromodynamics phase transition.

关键词： EMD model energy loss jet quenching parameter drag force jet quenching critical temperature anisotropic QGP AdS/CFT

DIFFERENT TYPES OF MICROFIBRILLATED CELLULOSE AS FILLER MATERIALS IN POLYSODIUM ACRYLATE SUPERABSORBENTS

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Chinese Journal of Polymer Science 2011年第4期29卷 407-413页

作者： Mikael Larsson qi zhou Anette Larssona Department of Chemical and Biological Engineering Chalmers University of Technology 41296 Gothenburg Sweden Wallenberg Wood Science Center Royal Institute of Technology SE-100 44 Stockholm Sweden School of Biotechnology Royal Institute of Technology SE-106 91 Stockholm Sweden

Three types of microfibrillated cellulose （MFC） with differences in structure and surface charge were used at low concentration as filler materials in polysodium acrylate superabsorbents （SAPs）. The swelling of the composite hydrogels was determined in 0.9% NaCl solution as well as in deionized water. The shear modulus of the samples was determined through uniaxial compression analysis after synthesis and after swelling in 0.9% NaC1 solution. Furthermore, the ability to retain filler effects after washing was investigated. The results showed that all of the investigated MFCs had a strong reinforcing effect on the shear modulus after synthesis. The filler effect on swelling and on the associated shear modulus of swollen samples showed a more complicated dependence on structure and surface charge. Finally, it was found that the filler effects were reasonably retained after washing and subsequent drying. The results confirm that MFC holds great potential as a filler material in superabsorbent applications. Furthermore, the results provide some insight on how the structural properties and surface charge of MFC will affect gel properties depending on swelling conditions. This information should be useful in evaluating the use of different types of MFC in future applications.

关键词： SAP MFC Microfibrillated cellulose Polyacrylic acid Hydrogels.