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Piezoelectric Energy Analysis on Diverse Buoy Coupling with Hydrodynamic Parameters

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China Ocean Engineering 2019年第3期33卷 279-287页

作者： liu Heng-xu liu Ming CHAI Yuan-chao shu Guo-yang JING Feng-mei WANG Li-quan College of Shipbuilding Engineering Harbin Engineering University Harbin 150001 China College of Mechanical and Electrical Engineering Harbin Engineering University Harbin 150001 China

This paper mainly describes the influence factors of the captured energy power by huge wave energy harvesters, in which the vertical motion of buoy can transform ocean’s potential energy into piezoelectric energy power by undulating waves. Firstly, related environmental coefficients are analyzed by means of the incident wave theory. Besides, the geometric structural parameters are also analyzed and compared under optimal environmental coefficients with semi-analytical solutions. Thirdly, the numerical results also show the impact trend of hydrodynamic parameters and geometric volume on motion, voltage and power with qualitative agreement. The numerical simulation confirms that the improved structure parameters could markedly deliver sufficient power under the same conditions with long-time stability.

关键词： semi-analytical method incident wave theory piezoelectric cantilever beam hydrodynamic characteristics lumped and structural parameters

Interaction of Photoactive[Fe(CN)_6]^(4-) with TiO_2 Anatase(101) Surface:A Periodic Density Functional Theory Study

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Chinese Journal of Structural Chemistry 2007年第3期26卷 361-366页

作者： XU Ying CHEN Wen-Kai CAO mei-Juan liu shu-Hong LI Jun-Qian Department of Chemistry Fuzhou University Fuzhou Fujian 350002 China

The plane-wave pseudopotential function method, based on density-functional theory, has been used to calculate the adsorption, electronic band structures, orbitals and optical absorption spectrum of [Fe（CN）6]^4- on TiOz anatase（101） surface. Our calculations reveal that the surface-modified anatase system has large adsorption energy and a much narrower band gap. [Fe（CN）6]^4- adsorption on the （101） surface could lead to a large red shift of the anatase optical absorption threshold, which extends into a visible region significantly. The calculated results are in agreement with the experiment and other theoretical studies reasonably. It is very important for the understanding and further development ofphotovoltaic materials that are active under visible light.

关键词： density functional theory (DFT) [Fe(CN)6]^4- anatase(101) surface adsorption absorption

Synthesis and Characterization ofN-(2,3,4,6-Tetra-O-acetyl-β-D-glucopyranosyl)-thiocarbamic-4-hydroxy-benzoyl Hydrazine Dihydrate

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Chemical Research in Chinese Universities 2005年第5期21卷 545-548页

作者： ZHANG shu-sheng YE Su-juan LI Xue-mei GU Shan-shan liu Qing College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China

A new complex of N-（ 2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl ） -thiocarbamic 4-hydroxy-benzoyl hydrazine dihydrate, C22 H27 N3 O10S · 2H2 O, was synthesized and its structure was determined by X-ray crystallography and TG/DTG methods. The compound belongs to the orthorhombic system, which crystallizes in space group P212121 , with a = 1. 0275 （ 3 ）, b = 1. 3419 （4）, c = 2. 0234 （ 6 ）, V = 2. 7899 （ 16 ） nm^3, and Z = 4. The hexopyranosyl ring adopts a ^4C1 conformation. All the substituents are at equatorial positions. The molecules are linked into a three-dimensional framework via intermolecular interactions. Atoms O5 and O9 show oositional disorders.

关键词： N-(2,3,4,6-Tetra-O-aeetyl-β-D-glueopyranose Synthesis Crystal structure Characterization

Synthesis of nano-TiO2 assisted by diethylene glycol for use in high efficiency dye-sensitized solar cells

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Chinese Chemical Letters 2017年第4期28卷 765-770页

作者： Lin liu Xiang-mei Yu Bao Zhang shu-Xian Meng Ya-Qing Feng School of Chemical Engineer and Technology Tianjin University Tianjin 300072 China Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072 China

The performance of dye-sensitized solar cells（DSSCs） consisting of anatase TiO_2 nanoparticles that were synthesized via a hydrothermal method was *** synthesized TiO_2 nanoparticles were characterized by X-ray diffraction（XRD）,nitrogen sorption analysis,scanning electron microscopy（SEM）,high resolution transmission electron microscopy（HRTEM）,and UV-vis *** the J-Vcurve,electrochemical impedance spectroscopy（EIS）,and open-circuit voltage decay（OCVD） measurement were applied to evaluate the photovoltaic performance of *** with the commercial TiO_2nanoparticles（P25）,the synthesized-TiO_2 nanoparticles showed better *** adding diethylene glycol（DEG） before the hydrothermal process,the synthesized TiO_2 nanoparticles（hereafter referred to as TiO_2-DEG particles） shows narrower size distribution,larger specific surface area,higher crystallinity,and less surface defects than TiO_2（DEG free） *** analysis of photovoltaic properties of DSSCs based on TiO_2-DEG particles showed that the recombination of electron-hole pairs was decreased and the trapping of carries in grain boundaries *** was believed that the photoelectrode fabricated with the as-prepared TiO_2 nanoparticles improved the loading amount of dye sensitizers（N719）.and enhanced the photocurrent of the *** a result,the TiO_2-DEG particle based cells achieved a photo-to-electricity conversion efficiency（η） of 7.90%,which is higher than 7.53%for the cell based on TiO2（DEG free） and 6.59%for the one fabricated with P25.

关键词： Hydrothermal TiO2 Diethylene glycol Photoelectrode Dye-sensitized solar cells

Repetitive transcranial magnetic stimulation combined with olanzapine and amisulpride for treatment-refractory schizophrenia

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World Journal of Psychiatry 2023年第7期13卷 453-460页

作者： Jin-Ling liu Zhi-mei Tan shu-Jie Jiao Department of Neurology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450000Henan ProvinceChina Department of Rehabilitation Medicine The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450000Henan ProvinceChina

BACKGROUND Treatment-refractory schizophrenia(TRS),accounting for approximately 30%of all schizophrenia cases,has poor treatment response and prognosis despite treatment with antipsychotic *** To analyze the therapeutic effectiveness of repetitive transcranial magnetic stimulation(rTMS)combined with olanzapine(OLZ)and amisulpride(AMI)for TRS and its influence on the patient’s cognitive *** This study enrolled 114 TRS patients who received treatment at the First Affiliated Hospital of Zhengzhou University between July 2019 and July *** addition to the basic OLZ+AMI therapy,54 cases of the control group(Con group)received modified electroconvulsive therapy,while 60 cases of the research group(Res group)received *** on therapeutic effectiveness,safety(incidence of drowsiness,headache,nausea,vomiting,or memory impairment),Positive and Negative Symptom Scale,Montreal Cognitive Assessment Scale,and Schizophrenia Quality of Life Scale were collected from both cohorts for comparative *** The Res group elicited a higher overall response rate and better safety profile when compared with the Con ***,a significant reduction was observed in the post-treatment Positive and Negative Symptom Scale and Schizophrenia Quality of Life Scale scores of the Res group,presenting lower scores than those of the Con ***,a significant increase in the Montreal Cognitive Assessment Scale score was reported in the Res group,with higher scores than those of the Con *** The treatment of TRS with rTMS and OLZ+AMI is effective and ***,it can alleviate the patients’mental symptoms,improve their cognitive function and quality of life,and has a high clinical application value.

关键词： Repetitive transcranial magnetic stimulation Olanzapine Amisulpride Treatment-refractory schizophrenia Therapeutic effectiveness Cognitive function

Epigenetic Landscape Changes Due to Acupuncture Treatment:From Clinical to Basic Research

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Chinese Journal of Integrative Medicine 2020年第8期26卷 633-640页

作者： HONG Hao JING Xin-yue liu shu-bao PENG Yong-jun ZHU Bing-mei Regenerative Medicine Research Center West China HospitalSichuan UniversityChengdu 610041China Key Laboratory of Acupuncture and Medicine Research of Ministry of Education Nanjing University of Chinese MedicineNanjing 210023China Department of Acupuncture and Moxibustion Rehabilitation Jiangsu Hospital of Traditional Chinese MedicineNanjing 210029China

Acupuncture has been widely used for treating diseases since the ancient days in China,but the mechanism by which acupuncture exerts such powerful roles is ***,including DNA methylation,histone modification,and post-transcriptional regulation of miRNAs,is the study of heritable changes in gene expression that do not include DNA sequence *** has become a new strategy for the basic and clinical research of acupuncture in the last *** investigators have been trying to illustrate the mechanism of acupuncture from an epigenetics perspective,which has shed new lights on the mechanisms and applications of ***,the introduction of epigenetics into the regulatory mechanism in acupuncture treatment has provided more objective and scientific support for acupuncture theories and brought new opportunities for the improvement of acupuncture *** this paper,we reviewed the literatures that has demonstrated that acupuncture could directly or indirectly affect epigenetics,in order to highlight the progress of acupuncture studies correlated to epigenetic *** do have to disclose that the current evidence in this review is not enough to cover all the complex interactions between multiple epigenetic modifications and their ***,the up-to-date results can help us to better understand acupuncture’s clinical applications and laboratory research.

关键词： acupuncture DNA methylation histone modification chromatin remodeling miRNA

Effects of loose deposits on debris flow processes in the Aizi Valley, southwest China

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Journal of Mountain Science 2020年第1期17卷 156-172页

作者： liu mei ZHANG Yong TIAN shu-feng CHEN Ning-sheng MAHFUZR Rahman JAVED Iqba Key Lab of Mountain Hazards and Surface Processes Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China University of Chinese Academy of Sciences Beijing 100049China Department of Civil Engineering International University of Business Agriculture and TechnologyDhaka 1230Bangladesh Department of geology The university ofHaripurHaripur 22620Pakistan

Loose deposits, rainfall and topography are three key factors that triggering debris ***, few studies have investigated the effects of loose deposits on the whole debris flow *** June 28, 2012, a catastrophic debris flow occurred in the Aizi Valley, resulting in 40 *** Aizi Valley is located in the Lower Jinsha River,southwestern Sichuan Province, China. The Aizi Valley debris flow has been selected as a case for addressing loose deposits effects on the whole debris flow process through remote sensing, field investigation and field experiments. Remote sensing interpretation and laboratory experiments were used to obtain the distribution and characteristics of the loose deposits, respectively. A field experiment was conducted to explore the mechanics of slope debris flows, and another field investigation was conducted to obtain the processes of debris flow formation, movement and amplification. The results showed that loose deposits preparation, slope debris flow initiation,gully debris flow confluence and valley debris flow amplification were dominated by the loose *** droughts and earthquake activities may have increased the potential for loose soil sources in the Aizi Valley, which laid the foundation for debris flow formation. Slope debris flow initiated under rainfall, and the increase in the water content as well as the pore water pressure of the loose deposits were the key factors affecting slope failure. The nine gully debris flows converged in the valley, and the peak discharge was amplified 3.3 times due to a blockage and outburst caused by a large boulder. The results may help in predicting and assessing regional debris flows in dry-hot and seismic-prone areas based on loose deposits, especially considering large boulders.

关键词： Aizi Valley Loose deposits Debris flow process Slope debris flow Boulder blockage Discharge amplification

Role of CAST-Drp1 Pathway in Retinal Neuron-Regulated Necrosis in Experimental Glaucoma

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Current Medical Science 2023年第1期43卷 166-172页

作者： Su-mei liu Lv-shuang LIAO Ju-fang HUANG shu-chao WANG Department of Anesthesiology The Second Xiangya Hospital of Central South UniversityChangsha410011China Center for Medical Research The Second Xiangya Hospital of Central South UniversityChangsha410011China Department of Anatomy and Neurobiology School of Basic Medical SciencesCentral South UniversityChangsha410013China School of Physical Education Hunan Institute of Science and TechnologyYueyang430600China

Objective Numerous studies have indicated that excitatory amino acid toxicity,such as glutamate toxicity,is involved in *** addition,excessive glutamate can lead to an intracellular calcium overload,resulting in regulated *** previous studies have found that the calpastatin(CAST)-calpain pathway plays an important role in retinal neuron-regulated necrosis after glutamate *** inhibition of the calpain pathway can decrease regulated necrosis,necrotic cells *** has been suggested that there are other molecules that participate in retinal neuron-regulated *** is an important regulator of dynamin-related protein 1(Drp1)-mediated mitochondrial ***,the aim of this study was to determine whether the CAST-Drp1 pathway may be an underlying signaling axis in neuron-regulated *** Using cultured retinal neurons and in an in-vivo glaucoma model induced by glutamate overload,members of the CAST-Drp1 pathway were assessed by immunofluorescence,Western blotting,Phos-tagTM SDS-PAGE,and co-immunoprecipitation ***,the black and white box test was performed on the *** We found that more retinal neuron-regulated necrosis and Drp1 activation as well as lower CAST levels were present in the glutamate-induced glaucoma *** with glutamate-induced glaucoma exhibited impaired visual *** also observed retinal neuron-regulated necrosis and Drp1 activity decreased,and impaired vision recovered after CAST active peptide application,indicating that the CAST-Drp1 pathway plays a critical role in retinal neuron-regulated necrosis and visual *** The results of this study indicate that the CAST-Drp1 pathway protects against retinal neuron-regulated necrosis,which may expand the therapeutic targets for the treatment of neurodegenerative disorders involving dysfunction of glutamate metabolism,such as glaucoma.

关键词： retinal ganglion cells glaucoma calpastatin dynamin-related protein l central nervous system regulated necrosis glutamate

Preparation of End Grafted Polyacrylonitrile Brushes through Surface Confined Radical Chain Transfer Reaction

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Chinese Chemical Letters 2003年第1期14卷 47-50页

作者： Feng ZHOU shu Juan liu Bo WANG Ting mei WANG Miao CHEN Wei Min liu Lanzhou Institute of Chemical Physics Chinese Academy of SciencesLanzhou 730000

End grafted polyacrylonitrile (PAN) brush was prepared through surface initiated polymerization via the chain transfer process. The thiol-terminated monolayer and PAN brushes were characterized by FTIR, X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), ellipsometry and contact angle measurements etc. It is demonstrated that radical chain transfer reaction and surface initiated precipitate polymerization can be used to prepare end-grafted polymer brushes.

关键词： Acrylonitrile Chain transfer Polymer brush Surface initiated polymerization