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Haze and health

National Science Review 2016年第4期3卷 412-413页

作者： liang-hong Guo Research Center for Eco-environmental Science Chinese Academy of Sciences

As a general term,haze is defined as an aggregation in the atmosphere of very fine,widely dispersed,solid or liquid particles,or both,giving the air an opalescent appearance that subdues colors[1].While natural haze such as that in the forestcovered mountains and valleys has long existed,hazardous haze derived primarily from the combustion of fossil-fuel products has evolved with human activities.

关键词： PM Haze and health very

Combining Neutron Scattering,Deuteration Technique,and Molecular Dynamics Simulations to Study Dynamics of Protein and Its Surface Water Molecules

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Chinese Journal of Polymer Science 2019年第11期37卷 1083-1091页

作者： Li-Rong Zheng liang hong School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China Institute of Natural Sciences Shanghai Jiao Tong University Shanghai 200240 China

Protein internal dynamics is essential for its function. Exploring the internal dynamics of protein molecules as well as its connection to protein structure and function is a central topic in biophysics. However, the atomic motions in protein molecules exhibit a great degree of complexities. These complexities arise from the complex chemical composition and superposition of different types of atomic motions on the similar time scales, and render it challenging to explicitly understand the microscopic mechanism governing protein motions, functions, and their connections. Here, we demonstrate that, by using neutron scattering, molecular dynamics simulation, and deuteration technique, one can address this challenge to a large extent.

关键词： Neutron scattering Deuteration techniques Molecular dynamics simulations Protein Hydration water Dynamics

A clinical trial of combined use of rosiglitazone and 5-aminosalicylate for ulcerative colitis

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World Journal of Gastroenterology 2008年第1期14卷 114-119页

作者： hong-liang liang Qin Ouyang Department of Gastroen-terology West China Hospital Sichuan University Chengdu610041 Sichuan Province China

AIM: To investigate the therapeutic effects of the combined use of rosiglitazone and aminosalicylate on mild or moderately active ulcerative colitis (UC).METHODS: According to the national guideline for diagnosis and treatment of inflammatory bowel disease (IBD) in China, patients with mild or moderately active UC in our hospital were selected from July to November, 2004. Patients with infectious colitis, amoebiasis, or cardiac, renal or hepatic failure and those who had received corticosteroid or immunosuppressant treatment within the last month were excluded. Following a quasi-randomization principle, patients were allocated alternatively into the treatment group (TG) with rosiglitazone 4 mg/d plus 5-ASA 2 g/d daily or the control group (CG) with 5-ASA 2 g/d alone, respectively, for 4 wk. Clinical changes were evaluated by Mayo scoring system and histological changes by Truelove-Richards' grading system at initial and final point of ***: Forty-two patients completed the trial, 21 each in TG and CG. The Mayo scores in TG at initial and final points were 5.87 (range: 4.29-7.43) and 1.86 (range: 1.03-2.69) and those in CG were 6.05 (range: 4.97-7.13) and 2.57 (range: 1.92-3.22) respectively. The decrements of Mayo scores were 4.01 in TG and 3.48 in CG, with a remission rate of 71.4% in TG and 57.1% in CG, respectively. Along with the improvement of disease activity index (DAI), the histological grade improvement was more significant in TG than in CG (P < 0.05).CONCLUSION: Combined treatment with rosiglitazone and 5-ASA achieved better therapeutic effect than 5-ASA alone without any side effects. Rosiglitazone can alleviate colonic inflammation which hopefully becomes a novel agent for UC treatment.

关键词： Peroxisome proliferators-activated receptor γ Rosiglitazone Ulcerative colitis

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Acta Mathematica Sinica,English Series 2015年第1期31卷 44-60页

作者： hong liang LI Department of Mathematics Zhejiang International Studies University

In the present paper, we prove the existence of global solutions for the Navier-Stokes equations in R^n when the initial velocity belongs to the weighted weak Lorentz space A^n,∞ （u） with a sufficiently small norm under certain restriction on the weight u. At the same time, self-similar solutions are induced if the initial velocity is, besides, a homogeneous function of degree -1. Also the uniqueness is discussed.

关键词： Navier-Stokes equations self-similar solutions convolution weighted Lorentz spaces

Embedding property on rearrangement invariant spaces

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Applied Mathematics(A Journal of Chinese Universities) 2012年第3期27卷 371-378页

作者： LI hong-liang Department of Mathematics Zhejiang UniversityHangzhou 310027China Department of Mathematics Zhejiang International Studies UniversityHangzhou 310012China

Let X be a rearrangement invariant space is R^n and Wxr1…,rn be an anisotropicSobolev space which is a generalization of Wpri,…,rn,The main subject of this paper is to prove the embedding theorem fot Wpri,…,rn.

关键词： Lorentz space Sobolev space Sobolev embedding rearrangement invaxiant space.

Lattice structure adaptive IIR notch filter based on least square kurtosis

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Journal of Systems Engineering and Electronics 2009年第6期20卷 1188-1192页

作者： liang hong hong Kang Yang Changsheng Coll. of Marine Northwestern Polytechnical Univ. Xi'an 710072 P. R. China

A new variable step-size algorithm for a second-order lattice form structure adaptive infinite impulse response （IIR） notch filter to detection and estimation frequency of sinusoids in Gaussian noises is proposed. Utilizing least square kurtosis of output signals as a cost function, the new gradient-based algorithm to update frequency of the adaptive IIR notch filter and the new variable step-size algorithm are given. The computer simulation results show that the proposed algorithm has better ability in suppressing colored Gaussian noises and better accuracy in estimating parameters at low SNR than previous algorithms.

关键词： adaptive IIR notch filter least square kurtosis variable step-size colored Gaussian noise.

A review of current understanding in tribochemical reactions involving lubricant additives

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Friction 2023年第4期11卷 489-512页

作者： Yan CHEN Peter RENNER hong liang Department of Materials Science and Engineering Texas A&M UniversityCollege Station 77843USA J.Mike Walker’66 Department of Mechanical Engineering Texas A&M UniversityCollege Station 77843USA

Lubricants have played important roles in friction and wear reduction and increasing efficiency of mechanical *** optimize tribological performance,chemical reactions between a lubricant and a substrate must be designed *** reactions are chemical reactions enabled or accelerated by mechanical *** activated lubricant additives play important roles in these *** this review,current understanding in mechanisms of chemical reactions under shear has been *** such as oil-soluble organics,ionic liquids(ILs),and nanoparticles(NPs)were analyzed in relation to the tribochemical reaction routes with elements in metallic *** results indicated that phosphorus,sulfur,fluorine,and nitrogen are key elements for tribochemical *** resulting tribofilms from zinc dithiophosphates(ZDDP)and molybdenum dithiocarbamate(MoDTC)have been widely reported,yet that from ILs and NPs need to investigate *** review serves as a reference for researchers to design and optimize new lubricants.

关键词： lubricant additives tribochemical reactions oil-soluble organics ionic liquids(ILs) nanoparticles(NPs)

Morphology and electric potential-induced mechanical behavior of metallic porous nanostructures

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Friction 2020年第3期8卷 604-612页

作者： Sunghan KIM Andreas APOLYCARPOU hong liang School of Mechanical Engineering Chung Ang UniversinSeoul 06974Republic of Korea Department of Mechanical Engineering Texas A&M UniversiyCollege Sation 77843-3123USA

Understanding mechanical behaviors influenced by electric potential and tribological contacts is important for verifying the robustness and reliability of applications based on metallic porous nanostructures in electrical *** this work,nickel-based metallic porous nanostructures were studied to characterize their mechanical properties and morphologically dependent contact areas during application of an electric potential using a nanoindenter.W e observed that the indentation moduli of nickel-based metallic porous nanostructures were altered by pore size and application of electric *** addition,the structural aspects of the surface morphology of nickel-based porous nanostructures had a critical effect on the determination of contact area.W e suggest that the relation between electric potential and the mechanical behaviors of metallic porous nanostructures can be crucial for building mechanically robust functional devices,which are influenced by electric *** morphological shape characteristics of metallic porous nanostructures can be alternative decisive factors for manipulation of tribological performance through regulation of contact area.

关键词： mechanical properties nanoindentation metallic porous nanostructures contact area electric potentia

Deviating from the nanorod shape： Shape-dependent plasmonic properties of silver nanorice and nanocarrot structures

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Frontiers of physics 2016年第2期11卷 45-55页

作者： hong-Yan liang hong Wei hong-Xing Xu Center for Nanoscience and Nanotechnology School of Physics and Technology and Institute for Advanced Studies Wuhan University Wuhan 430072 China Institute of Physics Chinese Academy of Sciences and Beijing National Laboratory for Condensed Matter Physics Beijing 100190 China

Noble metallic nanostructures exhibit special optical properties resulting from excitation of surface plasmons. Among the various metallic nanostructures, nanorods have attracted particular attention because of their unique and intriguing shape-dependent plasmonic properties. Nanorods can sup- port transverse and longitudinal plasmon modes, the latter ones depending strongly on the aspect ratio of the nanorod. These modes can be routinely tuned from the visible to the near-infrared spectral regions. Although nanorods have been investigated extensively, there are few studies de- voted to nanostructures deviating from the nanorod shape. This review provides an overview of recent progress in the development of two kinds of novel quasi-one-dimensional silver nanostruc- tures, nanorice and nanocarrot, including their syntheses, crystalline characterizations, plasmonic property analyses, and performance in plasmonic sensing applications.

关键词： electron energy loss spectroscopy (EELS) localized surface plasmon resonance (LSPR),multipolar longitudinal plasmon mode nanocarrot nanorice plasmonic sensing