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Journal of Materials Science & Technology 2010年第10期26卷 957-960页

作者： ying li Changzhen wang Zhongli Zhang Jiangxin wang College of Materials and Metallurgy Northeastern University Shenyang 110004 China

The steel contains a small amount of hydrogen which will escape during the heat *** hydrogen pressure in 16MnRE steel was investigated with a hydrogen sensor,which used SrCe0.95Yb0.05O3-α proton conductor as a solid electrolyte,YHx＋YH2z as a solid state reference electrode and Ni wire as electrode constructing a hydrogen concentration cell,shown as Ni｜YHx＋YH2z ｜SrCe0.95Yb0.05O3-α ｜[H] steel ｜*** response time of sensor is less than *** relational expression of hydrogen partial pressure with temperatures was determined using two shape proton *** results showed the regularity in experimental temperature range,and the hydrogen partial pressure increased as its temperature was raised.

关键词： Hydrogen sensor Proton conductor Solid electrolyte

Microstructure and embrittlement of the fine-grained heat-affected zone of ASTM4130 steel

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International Journal of Minerals,Metallurgy and Materials 2011年第4期18卷 419-423页

作者： li-ying li Yong wang Tao Han Chao-wen li College of Mechanical and Electronic Engineering China University of Petroleum Dongying 257061 China

The mechanical properties and microstructure features of the fine-grained heat-affected zone（FGHAZ） of ASTM4130 steel was investigated by optical microscope（OM）,scanning electron microscope（SEM）,transmission electron microscope（TEM）,and welding thermal simulation *** is found that serious embrittlement occurs in the FGHAZ with an 81.37% decrease of toughness,compared with that of the base *** analysis reveals that the FGHAZ is mainly composed of acicular,equiaxed ferrite,granular ferrite,martensite,and martensite-austenite（M-A） *** FGHAZ embrittlement is mainly induced by granular ferrite because of carbides located at its boundaries and ***,the existence of martensite and M-A constituent,which distribute in a discontinuous network,is also detrimental to the mechanical properties.

关键词： ASTM4130 steel welding heat-affected zone microstructure embrittlement

Optimization of closing law of turbine guide vanes based on improved artificial ecosystem algorithm

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Journal of Hydrodynamics 2023年第3期35卷 582-593页

作者： li-ying wang Jia-jie Zhang Hong-gang Fan College of Water Conservancy and Hydropower Hebei University of EngineeringHandan 056038China Hebei Key Laboratory of Smart Water Conservancy Handan 056038China State Key Laboratory of Hydroscience and Engineering Department of Energy and Power EngineeringTsinghua UniversityBeijing 100084China

Optimization of the closing law of the guide vane is the most economical and efficient way to reduce the risk incurred by pressure and speed excursions,thus guaranteeing the security of the hydro-turbine and the whole hydraulic *** order to optimize the closing law of the guide vane of hydraulic turbine,an improved artificial ecosystem optimization algorithm was proposed(IAEO).The reverse learning was used to initialize the population,multi-strategy bound handing schemes was used to improve the algorithm convergence ***-three mathematical benchmark functions were used to test the *** showed an improvement in the IAEO algorithm convergence speed and a stronger exploration than other *** algorithm was used to optimize the closing law of the guide vane of hydraulic turbine based on the hydraulic transient *** results showed that the maximum pressure in the spiral casing inlet,the minimum pressure in the draft tube inlet and the maximum speed all meet the design requirements by use of the closing law of the guide vane optimized by *** with other algorithms such as particle swarm optimization(PSO),artificial ecosystem-based optimization(AEO)and grey wolf optimizer(GWO),the closing law of the guide vane optimized by IAEO algorithm was proved to be of great advantages in distribution of safety margin of each optimization goal.

关键词： Hydraulic transient process the closing law of guide vane improved artificial ecosystem-based optimization(IAEO) optimization calculation

NUMERICAL PREDICTION OF BLADE FREQUENCY NOISE OF CAVITATING PROPELLER

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Journal of Hydrodynamics 2012年第3期24卷 371-377页

作者： YE Jin-ming XIONG ying li Fang wang Zhan-zhi College of Naval Architecture and Power Naval University of Engineering Wuhan 430033 China

The blade frequency noise of a cavitating propeller in a uniform flow is analyzed in the time domain. The unsteady loading （of a dipole source） and the sheet cavity volume （of a monopole source） on the propeller surface are calculated by a potential-based surface panel method. Then the time-dependent pressure and the cavity volume data are used as the input for the Fowcs Williams-Hawkings formulation to predict the acoustics pressure. The integration of the noise source is performed over the true blade surface rather than the ideal blade surface without thickness. The noise characteristics of the cavitating propeller are discussed. With the sheet cavitation, the thickness （cavitation） noise is larger than the loading noise and is the dominant noise source. The noise directivity is not as clear as that of the noise under a non-cavitation condition. The cavitation noise is attenuated more slowly than the non-cavitation noise.

关键词： propeller surface panel method cavitation noise time domain

Resilience provides mediating effect of resilience between fear of progression and sleep quality in patients with hematological malignancies

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World Journal of Psychiatry 2024年第4期14卷 541-552页

作者： Yuan Tian ying-li wang Department of Hematology The First Affiliated Hospital of Jinzhou Medical UniversityJinzhou 121000Liaoning ProvinceChina Department of Cardiology The First Affiliated Hospital of Jinzhou Medical UniversityJinzhou 121000Liaoning ProvinceChina

BACKGROUND Hematological tumors are common malignant tumors,with high morbidity and mortality *** patients with hematological malignancies develop sleep disorders that seriously affect their life and health because of acute onset of disease,rapid progression,high recurrence rates,complex treatment methods,and treatment *** To explore the mediating effect of resilience on fear of disease progression and sleep quality in patients with hematological *** A cross-sectional analysis of 100 patients with hematological malignancies,treated in the First Affiliated Hospital of Jinzhou Medical University between August 2022 and August 2023,was *** were assessed using a general data survey,a simplified scale for the fear of progression(FoP)of disease,a resilience scale,and the Pittsburgh Sleep Quality *** analysis was conducted to determine the relationship between various patient characteristics and FoP,resilience,and sleep ***’s correlation analysis was used to examine the correlations between mental resilience,FoP,and sleep *** The total FoP score mean value in patients with hematological malignancies was 38.09±5.16;the total resilience score mean value was 40.73±7.04;and the Pittsburgh Sleep Quality Index score mean value was 10.72±***,resilience,and sleep quality of the patients were associated with family per capita monthly income and patient education level(Plience and sleep quality scores(r=-0.560,-0.537,Plience was significantly associated with sleep quality scores(r=0.688,Plience between FoP and sleep quality in patients with hematological malignancies was-0.100 and accounted for 50.51%of the total *** indicated that FoP directly and indirectly affected sleep quality through the mesomeric eff

关键词： Resilience Blood tumor Fear of progression Sleep quality Mediating effect

De novo combination therapy with lamivudine and adefovir dipivoxil in chronic hepatitis B patients

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World Journal of Gastroenterology 2011年第43期17卷 4804-4809页

作者： Xiao-Hong Fan Jian-Zhang Geng li-Fen wang ying-ying Zheng Hai-ying Lu Jing li Xiao-Yuan Xu Department of Infectious Diseases Peking University First Hospital Beijing 100034 China

AIM:To investigate the appropriate time for combination therapy in HBeAg positive chronic hepatitis B(CHB) patients with decompensated ***:Thirty HBeAg positive CHB patients with decompensated cirrhosis were enrolled in the *** of the patients were given 48 wk combination therapy with lamivudine(LAM) and adefovir dipivoxil(ADV) .Briefly,10 patients were given the de novo combination therapy with LAM and ADV,whereas the other 20 patients received ADV in addition to LAM after hepatitis B virus(HBV) genetic ***:Serum alanine aminotransferase and total bilirubin were both improved in the two groups at 4,12,24 and 48 wk after *** albumin was also improved at 24 and 48 wk after combination therapy in both *** serum HBV DNA level wasstill detectable in every patient in the two groups at 4 and 12 wk after combination ***,in the de novo combination group,serum HBV DNA levels in 4(40%) and 9(90%) patients was decreased to below 1×10 3 copies/mL at 24 and 48 wk after the combination treatment,*** parallel,serum HBV DNA levels in 2(20%) and 8(40%) patients in the add-on combination group became undetectable at 24 and 48 wk after combination treatment,***,6(60%) patients in the de novo combination group achieved HBeAg seroconversion after 48 wk treatment,whereas only 4(20%) patients in the add-on combination group achieved ***-Pugh score of patients in the de novo combination group was better than that of patients in the add-on combination group after 48 wk ***,patients in the de novo combination group had a significantly decreased serum creatinine level and elevated red blood cell ***:De novo combination therapy with LAM and ADV was better than add-on combination therapy in terms of Child-Pugh score,virus inhibition and renal function.

关键词： Hepatitis B Chronic Cirrhosis Decompensated De novo combination Lamivudine Adefovir dipivoxil

Rapid prediction of floating and sinking components of raw coal

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International Journal of Mining Science and Technology 2012年第5期22卷 735-738页

作者： wang Guanghui Kuang Yali wang Zhangguo Ji li wang ying School of Chemical Engineering and Technology China University of Mining & Technology Xuzhou 221008 China

A model that rapidly predicts the density components of raw coal is *** is based on a threegrade fast float/sink *** recent comprehensive monthly floating and sinking data are used for *** predicted data are used to draw washability curves and to provide a rapid evaluation of the effect from heavy medium induced ***-one production shifts worth of fast float/sink data and the corresponding quick ash data are used to verify the *** results show a small error with an arithmetic average of 0.53 and an absolute average error of *** indicates that this model has high *** theoretical yield from the washability curves is 76.47% for the monthly comprehensive data and 81.31% using the model *** is for a desired cleaned coal ash of 9%.The relative error between these two is 6.33%,which is small and indicates that the predicted data can be used to rapidly evaluate the separation effect of gravity separation equipment.

关键词： Raw coal Floating and sinking components Fast floating and sinking data Predicting model

Preparation of Anhydrous LnCl_3(Ln=Eu, Er, Lu) by Chemical Vapor Transport

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Journal of Rare Earths 2000年第2期18卷 152-154页

作者： wang lin shan, li ying, wang Yu hong (Department of Chemistry, Northeastern University, Shenyang 110006, China) Department of Chemistry Northeastern University Shenyang 110006 China

Anhydrous lanthanide chlorides LnCl 3(Ln=Eu, Er, Lu) which are not easy to prepare in other ways were prepared by chemical vapor transport(CVT) method. Ln 2O 3 reacted with an excess of Al 2Cl 6 at 300 ℃ to produce LnCl 3. LnCl 3 reacted with Al 2Cl 6 at high temperature to form the gaseous complexes which decomposed at low temperature. LnCl 3 was then separated from other solids by controlling a proper temperature gradient. Residual Al 2Cl 6(g) was removed by the carrier of dry Cl 2 N 2 gases at 200 ℃. The yield rates are >90%, and the purity of products is >99 5%. The high purity of anhydrous lanthanide chlorides can be obtained by CVT method.

关键词： rare earths preparation chemical vapor transport

Study of Thermal Treatment on Properties of Polycrystalline Silicon

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Journal of Rare Earths 2006年第Z1期24卷 237-240页

作者： Ren Bingyan Gou Xianfang Ma lifen li Xudong Xu ying wang Wenjing Institute of Information Function Materials Hebei University of Technology Tianjin 300130 China Institute of Information Function Materials Hebei University of Technology Tianjin 300130 China Institute of Information Function Materials Hebei University of Technology Tianjin 300130 China Beijing Solar Energy Research Institute Beijing 100083 China Beijing Solar Energy Research Institute Beijing 100083 China Beijing Solar Energy Research Institute Beijing 100083 China

The effects of thermal annealing on oxygen behavior and carrier lifetimes of mc-Si wafers were investigated by means of FTIR and QSSPCD during single step and two step heat treatments in N2 and O2 ambient. It reveals that interstitial oxygen concentration of mc-Si and CZ-Si has a slighter decrease in N2 and O2 ambient during single-step annealing, which means oxygen precipitates are not generated. But oxygen concentration greatly decreases and generates a number of oxygen precipitates during two-step annealing. Bulk lifetime of mc-Si increases in N2 ambient at 850, 950, 1150 ℃ respectively, and annealing in O2 shows better results than that in N2 and annealing in two-step reflected better consequence than annealing in single-step. But lifetime of CZ-Si annealed in N2 or O2 decreases rapidly. The reason of lifetime increase is probably considered due to the fact that interstitial Si atoms of Si/SiO2 interface fill vacancies or some recombination centers at high temperature annealing. Moreover, a number of impurities in mc-Si probably diffuse to grain boundaries so that greatly reduce recombination centers result to lifetime rising.

关键词： polycrystalline silicon oxygen lifetime

Three-dimensional topological insulators:case of quaternary Heusler compounds

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Rare Metals 2021年第5期40卷 1219-1223页

作者： Xiao-Tian wang Xue-Fang Dai Hong-ying Jia li-ying wang Guo-Dong liu Xi-Feng liu Wen Yuan Yu-Ting Cui School of Material Sciences and Engineering Hebei University of TechnologyTianjin 300130China College of Chemistry and Chemical Engineering Hunan UniversityChangsha 410082China Department of Chemistry Michigan State UniversityEast LansingMichigan 48824USA School of Physics and Electronic Engineering Chongqing Normal UniversityChongqing 400044China

The feasibility of converting quaternary Heusler compounds XX’MZ(X=Sc,La;X’=Sc,Y;M=Ru,Fe;Z=Pb)into three-dimensional topological insulators was investigated by first-principle *** is found that the topological insulating state can be achieved in these quaternary Heusler compounds by the proper strain engineering or the substitution of *** of these compounds investigated in this paper have a negative formation energy,which implies that they are possible to be synthesized in reality.

关键词： Topological insulator Heusler compound Electronic structure