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Multiple Nonnegative Solutions for Singular Positone Boundary Value Problems to the Delay One-dimension p-Laplacian

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Acta Mathematicae Applicatae Sinica 2005年第3期21卷 405-414页

作者： Xiao-ning Lin Hai-yin Gao Business School of Northeast Normal University Department of Mathematics Northeast Normal UniversityChangchun 130024 China Applied Science College Changchun University Changchun 130022 China

The existence of multiple nonnegative solutions for singular positone boundary value problems to the delay one-dimension p-Laplacian is discussed in this paper.

关键词： Existcnce multiple nonnegative solutions singular boundary value problem delay differential cquation

Effect of Dy Addition on the Microstructure and Mechanical Property of Ti-Nb-Dy Alloys

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Journal of Wuhan University of Technology(Materials Science) 2019年第4期34卷 940-944页

作者： meng Xiaokai ZHAO Chunwang College of Science Inner Mongolia University of Technology Hohhot 010051China College of Arts and Sciences Shanghai Maritime UniversityShanghai 201306China

The effects of adding rare-earth element Dy on the microstructure, hardness, and elastic modulus of Ti78-xNb22Dyx(x=0.7, 2, and 5) alloys were investigated *** microstructure of Ti78-xNb22Dyx alloys consists of matrix(β phase and α″ martensite) and Dy-rich precipitates. The hardness can be increased with adding an appropriate amount of *** elastic modulus decreases gradually with the increase of Dy fraction.

关键词： Ti-Nb-Dy microstructure hardness elastic modulus

Roles and Implications of Paper Media in Early Stage of Integration of Traditional Chinese Medicine and Western Medicine in China

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Chinese Journal of Integrative Medicine 2019年第10期25卷 791-794页

作者： LI meng GUO Yan WENG Pan-feng School of Marxism Xi'an Jiaotong University Xi'an (710049) China Chinese Journal of Integrated Traditional and Western Medicine Press Beijing (100091) China Health and Life Ethics Center Wenzhou Medical University Wenzhou Zhejiang Province (325000) China

Paper media including the People’s Daily, Guangming Daily, Health News and Journal of Traditional Chinese Medicine were the main media that spread the thought and policy of integrative medicine(IM) in the early stage of the integration of traditional Chinese medicine(TCM) and Western medicine(WM) in China. Issues including paper media and its roles for spreading IM, from "TCM learning from WM" to "WM learning from TCM", advocating integration of TCM and WM, promoting IM through multiple channels were analyzed in this article, so as to show the propagation process of IM in China and the roles of the paper media. It was shown that strengthening the propaganda of IM through mainstream media, strengthening media convergence and the role of new media are important in spreading the thought of IM.

关键词： paper media integrated traditional Chinese medicine and Western medicine implications

Al^(3+)/graphene composites for electrochemical detection of DNA cleavage

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Science China Chemistry 2013年第9期56卷 1325-1330页

作者： DU meng KONG QianQian YANG Tao JIAO Kui College of Chemistry and Molecular Engineering Qingdao University of Science and Technology

Herein, we present the electrochemical co-deposition of Al3+/graphene composites directly from an aqueous mixture containing graphene oxide (GO) and Al3+. The obtained Al3+/graphene composites with good electrochemical activity were regarded as an appropriate immobilization platform for double-stranded DNA (dsDNA). The nontoxic redox probe xanthurenic acid (XA) was successfully applied to recognize single-stranded DNA and dsDNA. We illustrated that the scission of dsDNA caused by GO combining with some metal ions could be detected by monitoring the electrochemical signals of XA.

关键词： graphene DNA cleavage electrochemical deposition xanthurenic acid

Glycemic index,glycemic load and insulinemic index of Chinese starchy foods

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World Journal of Gastroenterology 2010年第39期16卷 4973-4979页

作者： meng-Hsueh Amanda Lin Shin Lu Jenshinn Lin Department of Food Science National Pingtung University of Science and Technology China Grain Products Research and Development Institute 12-6Hsia Ku TzePali Hsiang

AIM:To determine the glycemic index(GI),glycemic load(GL)and insulinemic index(Ⅱ)of five starchy foods that are commonly used in Chinese ***:Ten healthy subjects aged between 20-30 years were *** subject was asked to consume 50 g of available carbohydrate portions of test foods and reference *** capillary blood samples were collected at the start of eating and 15,30,45,60,90 and 120 min after *** GI and Ⅱ of foods were calculated from the ratio of incremental area under the glucose/insulin response curves of test and reference *** GL for each test food was determined from its GI value and carbohydrate ***:The results showed that brown rice elicited the highest postprandial glucose and insulin responses,followed by taro,adlay,yam and mung bean noodles,which produced the *** the five starchy foods,brown rice evoked the highest GI and GL at 82±0.2 and 18±0.2,followed by taro(69±0.4,12±0.2),adlay(55±0.4,10±0.2),yam(52±0.3,9±0.0)and mung bean noodles(28±0.5,7±0.2),*** Ⅱ values of the test foods corresponded with GI ***,brown rice gave the highest Ⅱ at 81±0.1,followed by taro(73±0.3),adlay(67±0.3),yam(64±0.5) and mung bean noodles(38±0.3).All five starchy foods had lower GI,GL and Ⅱ than reference bread(P<0.05).CONCLUSION:The GI,GL and Ⅱ values of starchy foods provide important information for the public to manage their diet and could be useful for the prevention of lifestyle-related diseases such as diabetes mellitus.

关键词： Glycemic response Glycemic index Glycemic load Insulinemic response Insulinemic index

Platinum-cobalt synergy redefines electrocatalytic lignin upgrading

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Science Bulletin 2024年第19期69卷 2961-2963页

作者： Xi Chen Baowen Zhou ning Yan China-UK Low Carbon College Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory for Power Machinery and Engineering of Ministry of Education Research Center for Renewable Synthetic FuelSchool of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117585Singapore

The heavy consumption of non-renewable fossil feedstocks has induced several vital problems such as global warming and energy ***,particularly lignin,is a promising renewable resource to substitute fossil fuels for producing value-added chemicals and fuels[1–3].Lignin has a highly irregular and recalcitrant structure that constituted by coumaryl,coniferyl and sinapyl alcohol monomers via intermolecular C–O and C–C bonds in a random *** a long time,lignin has been regarded as a waste source and burnt for ***,the high values of lignin as a feedstock to bridge future gaps to supply aromatics have been extensively recognized and various catalytic strategies to transform lignin into arenes,cycloalkanes,*** been reported.

关键词： Platinum alkanes cobalt

Effect of tadalafil in chronic renal failure rabbits:relevance to erectile dysfunction

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第6期12卷 455-459页

作者： meng-yuan ZHANG Qiang FU Wei BIAN Department of Urology Provincial Hospital Affiliated to Shandong University Jinan 250021 China

It is of great importance to investigate an effective and reliable medication against chronic renal failure (CRF)-related erectile dysfunction (ED),which aims to improve patients' life *** concentrations of cyclic guanosine monophosphate (cGMP) in the corpus cavernosal smooth muscle of both CRF and control rabbits were *** effects of various concentrations of tadalafil,papaverine,and sodium nitroprusside on the relaxation responses of corpus cavernosal smooth muscle pre-contracted with phenylephrine in CRF rabbits were *** was significant difference in the concentration of cGMP between CRF and control rabbits (P<0.01).Tadalafil had the greatest impacts on CRF rabbits when given the same concentration of papaverine or sodium nitroprusside and particularly significant differences were identified under the concentration levels of 10-5 and 10-4 mol/L (P<0.01).The results suggest that the cGMP concentrations of the corpus cavernosum had been greatly reduced in CRF rabbits compared with control rabbits and that tadalafil may be an ideal medication for use in the treatment of CRF-related ED.

关键词： Chronic renal failure Erectile dysfunction Phosphodiesterase inhibitor Tadalafil

Changes in aggregate-associated organic carbon and nitrogen after 27 years of fertilization in a dryland alfalfa grassland on the Loess Plateau of China

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Journal of Arid Land 2015年第4期7卷 429-437页

作者： ZHANG Liqiong WEI Xiaorong HAO Mingde ZHANG meng College of Natural Resources and Environment Northwest A&F University College of Agriculture and Life Sciences Ankang University State Key Laboratory of Soil Erosion and Dryland Farming in the Loess Plateau Northwest A&F University

Changes in the distribution of soil aggregate sizes and concentrations of aggregate-associated organic carbon （OC） and nitrogen （N） in response to the fertilization of grasslands are not well understood. Understanding these changes is essential to the sustainable development of artificial grasslands. For understanding these changes, we collected soil samples at 0-20 and 20-40 cm depths from a semi-arid artificial alfalfa grassland after 27 years of applications of phosphorus （P） and nitrogen＋phosphorus＋manure （NPM） fertilizers on the Loess Pla- teau of China. The distribution of aggregate sizes and the concentrations and stocks of OC and N in total soils were determined. The results showed that NPM treatment significantly increased the proportions of 〉2.0 mm and 2.0-0.25 mm size fractions, the mean geometric diameter （MGD） and the mean weight diameter （MWD） in the 0-20 cm layer. Phosphorous fertilizer significantly increased the proportion of 〉2.0 mm size fractions, the MGD and the MWD in the 0-20 cm layer. Long-term application of fertilization （P and NPM） resulted in the accumulation of OC and N in soil aggregates. The largest changes in aggregate-associated OC and N in the 0-20 cm layer were found at the NPM treatment, whereas the largest changes in the 20-40 cm layer were found at the P treatment. The results suggest that long-term fertilization in the grassland leads to the accumulation of OC and N in the coarse size fractions and the redistribution of OC and N from fine size fractions to coarse size fractions.

关键词： alfalfa grassland long-term fertilization nitrogen organic carbon semi-arid Loess Plateau

A review of engine application and fundamental study on turbulent premixed combustion of hydrogen enriched natural gas

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Science China(Technological Sciences) 2014年第3期57卷 445-451页

作者： WANG JinHua WEI ZhiLong ZHANG meng HUANG ZuoHua State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University

The application and fundamental study on turbulent premixed combustion of hydrogen enriched natural gas is reviewed in this *** include the combustion characteristics of direct injection engine fueled with hydrogen enriched natural gas,visualization study of direct injection combustion of hydrogen enriched natural gas using a constant volume vessel,and the fundamental study of turbulent premixed combustion of hydrogen enriched natural *** effect of additional hydrogen on the combustion process of natural gas engine is investigated from the fundamental view of the interaction between combustion reaction and turbulent flow.

关键词： natural gas hydrogen direct injection combustion turbulent premixed combustion OH-PLIF engine