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Theoretical Study on the Mechanics of a Coiled Tubing Working within a Marine Riser

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Theoretical Study on the Mechanics of a Coiled Tubing Workin...

作者： Yingchun Chen Chang wang Xinhua wang Xiaoli Fan wenming wang College of Mechanical Engineering and Applied Electronics Technology Beijing University of Technology Xinjiang Inspection Institute of Special Equipment College of Mechanical and Transportation Engineering China University of Petroleum Beijing

Due to its unique advantages,coiled tubing is now widely used in marine oil and gas exploitation operations,while the mechanical behavior of coiled tubing working within a marine riser is still *** mechanical model of this special pipe-in-pipe system was built by analyzing the force of coiled tubing and marine riser,using quasi-static *** the model was verified by experimental *** on the established model,the effects of different coiled tubing dimensions and platform transversal on the axial force of coiled tubing within a marine riser were *** was found that increasing the size of the coiled tubing can improve the axial load of the coiled tubing without affecting the force of the *** changing the platform transversal would have less impact on the coiled tubing,and a greater impact on the riser’s *** mechanical model built can provide theoretical guidance on coiled tubing marine operations.

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Characterization of β-lactamase activity and inhibition using isothermal titration calorimetry in living cells

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Characterization of β-lactamase activity and inhibition usi...

第十届全国化学生物学学术会议

作者： Ying Ge wenming wang Ke-Wu Yang Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education College of Chemistry and Materials ScienceNorthwest University

Hydrolysis of β-lactam antibiotic by β-lactamase is the most common mechanism ofβ-lactam resistance in clinical *** detection and characterization ofβ-lactamases are utmost biomedical *** spectrophotometric method is time-consuming and cannot provide thermodynamic information onβ-lactamases.A new assay was developed for the study of β-lactamase（Metallo-β-lactamase NDM-1） activity in living bacterial cells,based on heat-flow changes derived from enzymatic hydrolysis of β-lactams using isothermal titration *** thermokinetic parameters of cefazolin and the inhibition constant of EDTA were determined using the calorimetric *** results from the calorimetric assays were consistent with the data from the spectrophotometric *** ITC assay is a reliable and fast method to study β-lactamase enzyme kinetics and inhibition,which can also provide thermodynamic information on antibiotic hydrolysis.

关键词： β-lactamase isothermal titration calorimetry

Accelerated Sequential Deposition Reaction via Crystal Orientation Engineering for Low-Temperature,High-Efficiency Carbon-Electrode CsPbBr_(3) Solar Cells

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Energy & Environmental Materials 2024年第1期7卷 168-175页

作者： Zeyang Zhang Weidong Zhu Tianjiao Han Tianran wang wenming Chai Jiaduo Zhu He Xi Dazheng Chen Gang Lu Peng Dong Jincheng Zhang Chunfu Zhang Yue Hao State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology&Shaanxi Joint Key Laboratory of Graphene School of MicroelectronicsXidian UniversityXi'an 710071China Guangzhou Wide Bandgap Semiconductor Innovation Center Guangzhou institute of technologyXidian UniversityGuangzhou 510555China Qinghai Huanghe Hydropower Development CO. LTD.Xining810008China

Low-temperature,ambient processing of high-quality CsPbBr_(3)films is demanded for scalable production of efficient,low-cost carbon-electrode perovskite solar cells(PSCs).Herein,we demonstrate a crystal orientation engineering strategy of PbBr_(2)precursor film to accelerate its reaction with CsBr precursor during two-step sequential deposition of CsPbBr_(3)*** a novel strategy is proceeded by adding CsBr species into PbBr_(2)precursor,which can tailor the preferred crystal orientation of PbBr_(2)film from[020]into[031],with CsBr additive staying in the film as CsPb_(2)Br_(5)*** calculations show that the reaction energy barrier of(031)planes of PbBr_(2)with CsBr is lower about 2.28 eV than that of(O2O)***,CsPbBr_(3)films with full coverage,high purity,high crystallinity,micro-sized grains can be obtained at a low temperature of 150℃.Carbon-electrode PSCs with these desired CsPbBr_(3)films yield the record-high efficiency of 10.27%coupled with excellent operation ***,the 1 cm^(2)area one with the superior efficiency of 8.00%as well as the flexible one with the champion efficiency of 8.27%and excellent mechanical bending characteristics are also achieved.

关键词： carbon-electrode perovskite solar cells crystal orientation engineering CsPbBr_(3) low temperature two-step sequential deposition

Responses of Seed Yield and Economic Benefit of Winter Oilseed Rape(Brassica napus L.) to Different NPK Ratio and Dose

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Agricultural Science & Technology 2015年第11期16卷 2361-2366页

作者： Yingzi wang Chang TIAN Xuan ZHOU wenming wang Jianwei PENG Zhenhua ZHANG Haixing SONG Chunyun GUAN College of Resources and Environment Hunan Agricultural University Hunan Provincial Key Laboratory of Farmland Pollution Control and Agricultural Resources Use & Hunan Provincial Key Laboratory of Plant Nutrition in Common University & National Engineering Laboratory of College of Resources and Environment College of Horticulture and Landscape Hunan Agricultural University College of Environmental Science and Resources Zhejiang University Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China Hunan Branch National Center of Oilseed Crops Improvement

Field experiments were conducted during 2008-2010 to investigate the ef- fects of NPK fertilization on seed yield and economic benefit of a new hybrid cultivar of winter oilseed rape （Brassica napus L.） - Xiangzayou763, and to determine the optimum NPK ratio and dose in Hunan, China. The results showed that NPK ratio （1：0.50：0.50） with 180 kg/hm2 N, 90 kg/hm2 P2O5 and 90 kg/hm2 K20 was the optimum combination for the highest seed yield （2 231.13 kg/hm2） and economic benefit （9 816.97 Yuan/hm2）, of which 1 641.23 Yuan/hm2 being set for fertilizer in- vestment （VCR=4.11）. Besides, the effects of N, P and K fertilizers on seed yield and oil production of winter oilseed rape were not identical. N had the greatest ef- fect on plant growth of winter oilseed rape, followed by P and K. Total leaf number, green leaf number, leaf length and width, rhizome diameter, branch number, dry weight per plant and other agronomic characters in high N treatments were higher than those in low N treatments. By correlation and path analysis of yield components, the contribution rate to seed yield was found： effective silique number per plant〉seed number per silique〉l 000-seed weight.

关键词： NPK ratio anddose Seed yield Economic benefit Winter oilseed rape

Experimental Study On Improvement of Discharge Bulb Aging of Hydrogen Maser

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Experimental Study On Improvement of Discharge Bulb Aging of...

第七届中国卫星导航学术年会

作者： wenming wang Hefei ZHENG Guohui SHEN Jing LI Beijing Institute of Radio Metrology and Measurement

The preparation of atomic hydrogen has a significant effect on the operation of the hydrogen *** paper presents radio frequency（RF）discharge source and discharge bulb as the necessary conditions for the preparation of atomic *** on the current technical status of the RF discharge source and the main reaction of the plasma inside the discharge bulb,a new improved technique for the discharge bulb aging consisting in a series of experiments of different proportions of HF solution,acid etching time and inner wall *** new method described here fulfils the time,that the discharge bulb from the first light reached a normal rose red and the photoelectric diode light detection voltage reached equilibrium value,cut from more than one week to less than two days,the spectral intensity reach 16500 after two days while the traditional technology reaches 14000 after one week,and the aging success rate of this batch reaches100%.

关键词： hydrogen maser discharge bulb plasma aging

Structures, spectroscopic properties and photodynamic reactions of [RuCl(QN)NO]- complexes

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Structures, spectroscopic properties and photodynamic reacti...

中国化学会第八届全国物理无机化学学术会议

作者： Leilei Xie Lifang Liu Xiaolu wang wenming wang Li wang Hongfei wang Key Laboratory of Chemical Biology and Molecular Engineering of Education Ministry Institute of Molecular Science Shanxi University Key Laboratory of Energy Conversion and Storage Materials of Shanxi Provence Institute of Molecular Science Shanxi University

The coordination chemistry of transition-metal-NO complexes(metal nitrosyls) has taken on added significance in recent years because of the important role of nitric oxide(NO) as a signaling molecule in biological systems [1–4].In this work, the structures, electronic spectra, and infrared spectra of three nitrosylruthenium [(CH)N][RuCl(QN)(NO)]

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Progress in the Study of False Smut Disease in Rice

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Journal of Agricultural Science and Technology(A) 2012年第11期2卷 1211-1217页

作者： Xiaoyi Guo Yan Li Jing Fan Liang Li Fu Huang wenming wang Rice Research Institute Sichuan Agricultural University Chengdu 611130 China Department of Plant Pathology College of Agronomy Sichuan Agricultural University Chengdu 611130 China

Rice false smut disease is an increasing concern for research and production, not only because of the increasing epidemic occurrence in rice production, but also the intriguing specific pathogenesis of the disease to be a unique pathological system to enrich the molecular mechanism of plant-microbe interaction. Progresses have been achieved in the pathogen phylogenetic placement, the alternative hosts, the pathogen morphology and diversity, the toxins generated by false smut balls, the artificial inoculation method, and the pathogen transformation as well as rice resistance to the disease. However, it is still controversy on the infection process. It is not clear how the life cycle of this pathogen is coupled with the disease cycle. This review summarized our current understanding on the pathogen, the pathogenesis, and the rice resistance to the disease. Future work should pay attention to developing a more rapid and effective system to evaluate rice resistance and susceptibility to the disease, screening of rice germplasm for disease-resistance breeding, studying the resistance inheritance, and investigating the molecular mechanism of rice-false smut fungus interaction.

关键词： Rice false smut disease false smut ball disease cycle resistance review.

Effect of DENV-II infection on the expression of IL-29 in primary HUVEC with different elastic stiffness

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Effect of DENV-II infection on the expression of IL-29 in pr...

第七届生命科学联合学术大会

作者： Pei Hua Li liang Zhou Xiujuan wang wenming wang Huamin Department of Immunology Hainan Medical University

Objective Cultured of primary vascular endothelial cells from human umbilical veins(HUVECs)and simulated of substrate stiffness about *** observe inoculated of primary HUVECs on hydrogel(Gel)by dengue virus-II(DV-II)infected primary HUVECs induced of *** To isolation and culture of HUVECs,then take experiment by using the well-cultivated fifth generation of *** laboratory had successfully established with Gel of 4Kpa and cells were inoculated on Gel,and infected the primary HUVECs by using the DV-II whose MOI=10,then we detected the death rate and infection rate of the cells after 48 hours by using flow cytometry method,along with that,we also inspected the m RNA gene chip,at last,we tested the gene expression result through real-time fluorescent quantitative PCR and double antibody sandwich ELISA detected different of gene *** Detection of cell apoptosis and infection rate by flow cytometry without statistically significant difference(P>0.05),gene chip and real-time quantitative PCR detected and validated different of IL-29 induced by DV-II infected primary HUVEC on *** We found the appearance of IL-29 and conspicuous discriminating change of it through inoculating the Gel,this might be affected by the interferon antiviral mechanism.

关键词： Dengue Virus Interleukin-29 Hydrogel human umbilical vein endothelial

The rice false smut pathogen Villosiclava virens secretes a class v chitinase to suppress plant immunity

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The rice false smut pathogen Villosiclava virens secretes a ...

中国植物病理学会2019年学术年会

作者： Li Guobang Fan Jing Li Yan wang wenming Rice Research Institute Sichuan Agricultural University

Rice false smut(RFS),caused by Villosiclava virens(Vv)(anamorph:Ustilaginoidea virens(Cooke) Takahashi),is an important panicle disease in rice causing huge yield *** fungal pathogen Vv infects the developing spikelets of rice panicle at booting stage and converts grains into false smut balls,contaminating grains with its mycotoxins,which threaten food safety of ***,investigation on V fungus-rice interactions becomes one active research area in plant pathology and rice *** identified a candidate effector secreted by V,designated Uv5918,specifically up-regulated upon infection of rice *** of Uv5918 resulted in significantly enhanced pathogenicity of *** expression of Uv5918 in Arabidopsis and rice led to compromised defensive responses and enhanced *** addition,Uv5918 encodes a chitinase that binds to chitin and results in decrease of chitin in *** together,our data indicate that Uv918 may play dual roles in pathogenesis by suppression of host defense.

关键词： Rice false smut(RFS) Villosiclava virens v chitinase plant immunity