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Chinese Physics B 2017年第10期26卷 339-347页

作者： F Parvin S H Naqib department of Physics University of Rajshahi

The elastic, thermodynamic, electronic, and optical properties of recently discovered and potentially technologically important transition metal boride NbRuB, are investigated using the density functional formalism. Both generalized gradient approximation （GGA） and local density approximation （LDA） are used for optimizing the geometry and for estimating various elastic moduli and constants. The optical properties of NbRuB are studied for the first time with different photon polarizations. The frequency （energy） dependence of various optical constants complement quite well the essential features of the electronic band structure calculations. Debye temperature of NbRuB is estimated from the thermodynamical study. All these theoretical estimates are compared with published results, where available, and discussed in detail. Both electronic band structure and optical conductivity reveal robust metallic characteristics. The NbRuB possesses significant elastic anisotropy. Electronic features, on the other hand, are almost isotropic in nature. The effects of electronic band structure and Debye temperature on the emergence of superconductivity are also analyzed.

关键词： hard materials ternary borides DFT calculations electronic band structure optical properties superconductivity

Competing role of catalysis-coagulation and catalysis-fragmentation in kinetic aggregation behaviours

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Chinese Physics B 2010年第12期19卷 559-570页

作者：李晓东林振权宋美霞柯见洪 department of Physics Wenzhou University

We propose a kinetic aggregation model where species A aggregates evolve by the catalysis-coagulation and the catalysis-fragmentation, while the catalyst aggregates of the same species B or C perform self-coagulation processes. By means of the generalized Smoluchowski rate equation based on the mean-field assumption, we study the kinetic behaviours of the system with the catalysis-coagulation rate kernel K（i,j;l） l^v and the catalysis-fragmentation rate kernel F（i,j; l） l^μ, where l is the size of the catalyst aggregate, and v and μ are two parameters reflecting the dependence of the catalysis reaction on the size of the catalyst aggregate. The relation between the values of parameters v and μ reflects the competing roles between the two catalysis processes in the kinetic evolution of species A. It is found that the competing roles of the catalysis-coagulation and catalysis-fragmentation in the kinetic aggregation behaviours are not determined simply by the relation between the two parameters v and μ, but also depend on the values of these two parameters. When v 〉 μ and v ≥0, the kinetic evolution of species A is dominated by the catalysis-coagulation and its aggregate size distribution αk（t） obeys the conventional or generalized scaling law; when v 〈 μ and v ≥ 0 or v 〈 0 but μ≥ 0, the catalysis-fragmentation process may play a dominating role and ak（t） approaches the scale-free form; and in other cases, a balance is established between the two competing processes at large times and ακ（t） obeys a modified scaling law.

关键词： kinetic aggregation behaviour catalysis-coagulation catalysis-fragmentation rate equations

Lasing without inversion in a four-level diamond system

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Chinese Physics B 2012年第12期21卷 243-249页

作者：高强宋同强 department of Physics Ningbo University

We study the lasing without inversion in a four-level diamond configuration in the case of incoherent pumping field within the framework of the bare-state basis. With the strong fields limit, we obtain the approximate steady-state solution, and discuss the dependence of population distribution and system gain on probe detuning and auxiliary field Rabi frequency.

关键词： lasing without inversion four-level diamond system cyclic transition

Highly Dispersed RuOOH Nanoparticles on Silica Spheres:An Efficient Photothermal Catalyst for Selective Aerobic Oxidation of Benzyl Alcohol

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Nano-Micro Letters 2020年第3期12卷 169-178页

作者： Qilin Wei Kiersten G.Guzman Xinyan Dai Nuwan H.Attanayake Daniel R.Strongin Yugang Sun department of Chemistry Temple University

Photothermal catalysis represents a promising strategy to utilize the renewable energy source(e.g.,solar energy)to drive chemical reactions more *** and efficient photothermal catalysis relies on the availability of ideal photothermal catalysts,which can provide both large areas of catalytically active surface and strong light absorption power *** duplex requirements of a photothermal catalyst exhibit opposing dependence on the size of the catalyst nanoparticles,i.e.,smaller size is beneficial for achieving higher surface area and more active surface,whereas larger size favors the light absorption in the *** this article,we report the synthesis of ultrafine RuOOH nanoparticles with a size of 2–3 nm uniformly dispersed on the surfaces of silica(SiOx)nanospheres of hundreds of nanometers in size to tackle this challenge of forming an ideal photothermal *** ultrasmall RuOOH nanoparticles exhibit a large surface area as well as the ability to activate adsorbed molecular *** SiOx nanospheres exhibit strong surface light scattering resonances to enhance the light absorption power of the small RuOOH nanoparticles anchored on the SiOx ***,the RuOOH/SiOx composite particles represent a new class of efficient photothermal catalysts with a photothermal energy conversion efficiency of 92.5%for selective aerobic oxidation of benzyl alcohol to benzylaldehyde under ambient conditions.

关键词： Ultrasmall RuOOH nanoparticles Photothermal catalyst Selective aerobic oxidation Light antenna effect Light scattering resonance

Oxygen Sensor Based on the Principle of Electrochemical Pump

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Science China Mathematics 1994年第3期37卷 379-384页

作者：罗瑞贤刘恩辉任凤彩陈霭璠 Applied Chemistry department Beijing Institute of Chemical TechnologyBeijing 100029PRC Applied Chemistry department Beijing Institute of Chemical TechnologyBeijing 100029PRC high-temperature oxygen sensor of limiting.current with a porous layer on the cathode te limit the diffusion rate of oxygen is investigated and fabricated.The solid electrolyte is made of Yttria-doped stabilized zirooma (YSZ) and the porous platinum film electrode is deposited on the surface of YSZ.The relation between temperature and oxygen concentration is tested at 629°-780℃ in a mixture of N2 and O2 with the oxygen concentration being 0-37%.Experimental results show a linear output with the oxygen concentration.The temperature-dependence of its output can be explained by taking into account a mixed diffusion control mechanism of the ordinary and Knudsen diffusion.The operating principlestructure and performance of the sensor are discussed.

A high-temperature oxygen sensor of *** with a porous layer on the cathode te limit the diffusion rate of oxygen is investigated and *** solid electrolyte is made of Yttria-doped stabilized zirooma (YSZ) and the porous platinum film electrode is deposited on the surface of *** relation between temperature and oxygen concentration is tested at 629°-780℃ in a mixture of N2 and O2 with the oxygen concentration being 0-37%.Experimental results show a linear output with the oxygen *** temperature-dependence of its output can be explained by taking into account a mixed diffusion control mechanism of the ordinary and Knudsen *** operating principle,structure and performance of the sensor are discussed.

关键词： oxygen sensor limiting current diffusion control

Hofstadter's Butterfly and Phase Transition of Checkerboard Superconducting Network in a Magnetic Field

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Communications in Theoretical Physics 2010年第3期53卷 587-590页

作者：侯净敏田立君 department of Physics Southeast University department of Physics Shanghai University

We study the magnetic effect of the checkerboard superconducting wire network. Based on the de Gennes- Alexader theory, we obtain difference equations for superconducting order parameter in the wire network. Through solving these difference equations, we obtain the eigenvalues, linked to the coherence length, as a function of magnetic field. The diagram of eigenvalues shows a fractal structure, being so-called Hofstadter＇s butterfly. We also calculate and discuss the dependence of the transition temperature of the checkerboard superconducting wire network on the applied magnetic field, which is related to up-edge of the Hofstadter＇s butterfly spectrum.

关键词： superconducting wire network checkerboard lattice Hofstadter's butterfly phase transition

Association of ABCB1 Gene Polymorphisms with Efficacy and Adverse Reaction to Risperidone or Paliperidone in Han Chinese Schizophrenic Patients

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Neuroscience Bulletin 2016年第6期32卷 547-549页

作者： Weifeng Mi Feihu Liu Yongqiao Liu Bo Du Weidong Xiao Lingzhi Li Lan Huang Tianlan Lu Jia He Le Shi Weihua Yue Hongyan Zhang Peking University Sixth Hospital Peking University Instituteof Mental Health Key Laboratory of Mental Health Ministry of Health (Peking University) National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital) Beijing 100191 China The Mental Health Center of Xi'an Xi'an 710061 China The Sixth People's Hospital of Hebei Province Baoding 07100 China The People's Hospital of Hubei Province Wuhan 430060China National Institute on Drug dependence and Beijing KeyLaboratory of Drug dependence Peking UniversityBeijing 100191 China department of Pharmacology School of Basic Medical Sciences Peking University Health Science CenterBeijing 100191 China

Dear editor, P-glycoprotein （P-gp, also known as ATP-binding cassette transport sub-family B member 1, ABCB1） is a potent ATP-dependent efflux pump for a wide variety of drugs. Although studies of its substrates are abundant [ 1, 2], and ABCB1 is a well-conserved gene, there is increasing evi- dence that its polymorphisms affect substrate specificity [3]. A previous study reported that the synonymous single nucleotide polymorphism （SNP） C3435T （rs1045642） affects the timing of co-translational folding and insertionof P-gp into the membrane,

关键词： PANSS Association of ABCB1 Gene Polymorphisms with Efficacy and Adverse Reaction to Risperidone or Paliperidone in Han Chinese Schizophrenic Patients

Electrochemical Corrosion Behavior of Nd-Fe-B Sintered Magnets in Different Acid Solutions

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Journal of Rare Earths 2006年第2期24卷 218-222页

作者：郑精武姜力强陈巧玲 department of Chemical and Materials Engineering Zhejiang University of Technology Hangzhou 310014 China department

Electrochemical corrosion behavior of Nd-Fe-B sintered magnets in nitric acid, hydrochloric acid, sulfuric acid, phosphate acid and in oxalic acid was studied. Potentiodynamic polarization curves and immersion time dependence of corrosion rates of Nd-Fe-B sintered magnets in different acid solutions were tested. Microstructures of corroded Nd-Fe-B sintered magnets were investigated by means of SEM and AFM. The results indicate that in strong acid solutions of similar hydrogen ion concentration, the corrosion current increases in the order of HCl 〉 H3SO4 〉 HNO3 solution and Nd-Fe-B sintered magnets are passivated in phosphate acid and oxalic acid. Within 25 min, the corrosion rates of Nd-Fe-B sintered magnets in H2SO4 and H3PO4 solutions show a declining trend with immersion time, while in HNO3 and HCl solutions the corrosion rates are rising. And in H2C2O4 solution, weight of the magnets increases. The brim of Nd-Fe-B sintered magnets is corroded rather seriously and the size of the magnets changed greatly in nitric acid. The surfaces of the corroded magnets in the above mentioned acid solutions are all coarse.

关键词： Nd-Fe-B sintered magnets corrosion acid solution microstructure rare earths

Dynamics of Coulomb explosion of hydrogen clusters in a high-intensity femtosecond laser pulse

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Chinese Optics Letters 2006年第2期4卷 122-124页

作者：蔡旭红张培晴蒋月李邵辉 department of Physics

Using Bethe model, the dynamics of the ionization and Conlomb explosion of hydrogen clusters （0.5 5 nm） in high-intensity （10^15- 10^17 W/cm^2） femtosecond laser pulses have been st, ndied theoretically, and tile dependence of energy of protons emitted from exploding clusters on cluster size and laser intensity has been investigated. It is found that the maximum proton energy increases exponentially with the cluster size, and the exponent is mainly determined by the laser intensity. For a given cluster size, the maximum proton energy increases with increasing laser intensity and gets saturat, ion gradually. The calculation results are in agreement with the recent experimental observation.

关键词： Calculations Dynamics Explosions Hydrogen Ionization Protons

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吸烟与围术期管理

中华麻醉学杂志 2010年第1期30卷 4-6页

作者： Yu Shi 于春华罗爱伦 David O. Warner department of Anesthesiology the Anesthesia Clinical Research Unit and the Nicotine Dependence Center Mayo ClinicRochester MN USA 中国医学科学院北京协和医学院北京协和医院麻醉科

烟草危害是当今世界严重的公共卫生问题之一，世界卫生组织已将烟草流行作为全球最严重的公共卫生问题列入重点控制领域。中国是世界上最大的烟草种植国和消费国，约3亿成年人吸烟，占世界吸烟人口的三分之一，吸烟率达31％（男性吸烟率... 详细信息

烟草危害是当今世界严重的公共卫生问题之一，世界卫生组织已将烟草流行作为全球最严重的公共卫生问题列入重点控制领域。中国是世界上最大的烟草种植国和消费国，约3亿成年人吸烟，占世界吸烟人口的三分之一，吸烟率达31％（男性吸烟率为57％，女性吸烟率为3％）；约有5亿多人暴露于被动吸烟，

关键词：吸烟人口围术期管理世界卫生组织公共卫生问题烟草危害吸烟率被动吸烟成年人