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Vertically oriented TiO_2 nanotube arrays with different anodization times for enhanced boiling heat transfer

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Science China(Technological Sciences) 2012年第8期55卷 2184-2190页

作者： XU Jia yang mingjie XU JinLiang JI XianBing Beijing Key Laboratory of Low-Grade Energy Multiphase Flow and Heat Transfer School of Renewable EnergyNorth China Electric Power UniversityBeijing 102206China Laboratory of Advanced Materials Department of Material Science and EngineeringTsinghua UniversityBeijing 100084China

Pool boiling of saturated water on a plain Ti surface and surfaces covered with vertically-oriented TiO2 nanotube arrays(NTAs) has been *** technique of potentiostatic anodization using non-aqueous electrolytes was adopted to fabricate three types of TiO2 NTAs distinguished by their anodization *** to the bare Ti surface,the incipient boiling wall superheat on the TiO2 NTAs was decreased by 11 *** the critical heat flux and heat transfer coefficient of pool boiling on the TiO2 NTAs were higher than those from boiling on a bare Ti *** measured maximum critical heat flux and heat transfer coefficient values were 186.7 W/cm2 and 6.22 W/cm2K,*** performances for the enhancement of heat transfer by the three types of TiO2 NTAs were attributed to the different degrees of deformation in the nanostructure during ***-term performance of the nanomaterial-coated surfaces for enhanced pool boiling showed degradation of the TiO2 NTAs prepared with an anodization time of 3 hours.

关键词： TiO2 nanotube arrays pool boiling heat transfer enhancement deformation of nanostructure

Novel Photodetectors Based on Double-Walled Carbon Nanotube Film/TiO2 Nanotube Array Heterodimensional Contacts

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Nano Research 2011年第9期4卷 901-907页

作者： mingjie yang Jia-Lin Zhu Wei Liu Jia-Lin Sun Department of Physics and State Key Lab of Low-Dimensional Quantum Physics Tsinghua University Beijing 100084 China Laboratory of Advanced Materials Department of Material Science and Engineering Tsinghua University Beijing 100084 China

A new kind of photodetector based on a double-walled carbon nanotube （DWCNT） film and a TiO2 nanotube array with hetrodimensional non-ohmic contacts has been fabricated. Due to the dimensionality difference effect, the DWCNT film/TiO2 nanotube array photodetector exhibits a much higher photocurrent-to-dark current ratio and photoresponse relative to an Au film/TiO2 nanotube array device, even at small bias voltage. The photocurrent-to-dark current ratio reached four orders of magnitude and a high photoresponse of 2467 A/W was found upon irradiation at 340 nm. Furthermore, the photosensitive regions could be extended into the visible range. The photocurrent-to-dark current ratio reached approximately three orders of magnitude upon irradiation at 532 nm, where the photon energy is much lower than the band gap of TiO2.

关键词： Photodetectors double-wailed carbon nanotube (DWCNT) films TiO2 nanotube arrays heterodimensional contacts

Land use change characteristics affected by water saving practices in Manas River Basin,China using Landsat satellite images

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International Journal of Agricultural and Biological Engineering 2017年第6期10卷 123-133页

作者： yang Guang Chen Dong He Xinlin Long Aihua yang mingjie Li Xiaolong College of Water Conservancy and Architectural Engineering Shihezi UniversityShihezi 832000China Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production and Construction Corps Shihezi 832000China China Water Resources&Hydropower Science Research Institute Beijing 100038China

The characteristics and influencing factors of land use change under arid conditions were studied in the Manas River Basin in Xinjiang Region,Northwest *** satellite images acquired in 1976,1990,2000,2010 and 2015 over the study area were used as basic *** use change,the rate of change of land use,land use transfer and other aspects revealed the characteristics of land use change and related factors as influenced by water conditions in the *** results showed that:(1)Over nearly 50 years,land reclamation in the Manas River Basin resulted in the rapid expansion of an artificial oasis area,and promoted the process of‘oasis urbanization’,and accelerated the development of the river basin economy.(2)In 2000,the popularization of drip irrigation under mulch technology led to the rapid growth of cultivated land and development land in the ***,the water table declined in the desert area of the lower reaches of the river basin,and the area occupied by sparse shrub forest and grassland decreased.(3)Before popularization of water-saving technology,woodland,grassland and development land transformed to cultivated land in the amounts of 93.46 km^(2),2542.93 km^(2) and 137.53 km^(2),respectively,and woodland transformed in the amount of 189.64 km^(2).After water-saving technology was popularized,woodland,grassland and development land were transformed into cultivated land in the amounts of 567.41 km^(2),1756.2 km^(2) and 37.36 km^(2),respectively.(4)The popularization of water-saving technology made the dynamic degree of cultivated land and development land more active,and further increased landscape fragmentation and landscape *** level of urbanization development,the level of economic development and the dry humidity of the basin became the main factors affecting the change of land use in the basin.

关键词： land-use change spatial characteristics influencing factor Manas River Basin Landsat satellite images

Berberine alleviates myocardial diastolic dysfunction by modulating Drp1-mediated mitochondrial fission and Ca^(2+) homeostasis in a murine model of HFpEF

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Frontiers of Medicine 2023年第6期17卷 1219-1235页

作者： Miyesaier Abudureyimu mingjie yang Xiang Wang Xuanming Luo Junbo Ge Hu Peng Yingmei Zhang Jun Ren Cardiovascular Department Shanghai Xuhui Central HospitalFudan UniversityShanghai 200031China Department of Cardiology Zhongshan HospitalFudan UniversityShanghai Institute of Cardiovascular DiseasesShanghai 200032China Key Laboratory of Viral Heart Diseases National Health CommissionShanghai 200032China Key Laboratory of Viral Heart Diseases Chinese Academy of Medical SciencesShanghai 200032China National Clinical Research Center for Interventional Medicine Shanghai 200032China Department of General Surgery Shanghai Xuhui Central HospitalFudan UniversityShanghai 200031China Department of Geriatrics Shanghai Tenth HospitalTongji UniversityShanghai 200072China Department of Medical Laboratory and Pathology UniversityofWashingtonSeattleWA98195USA

Heart failure with preserved ejection fraction(HFpEF)displays normal or near-normal left ventricular ejection fraction,diastolic dysfunction,cardiac hypertrophy,and poor exercise ***,an isoquinoline alkaloid,possesses cardiovascular *** male mice were assigned to chow or high-fat diet with L-NAME(“two-hit”model)for 15 *** function was assessed using echocardiography and noninvasive Doppler *** morphology,mitochondrial ultrastructure,and cardiomyocyte mechanical properties were *** analysis,autophagic flux,and intracellular Ca^(2+)were also assessed in chow and HFpEF *** results show exercise intolerance and cardiac diastolic dysfunction in“two-hit”-induced HFpEF model,in which unfavorable geometric changes such as increased cell size,interstitial fibrosis,and mitochondrial swelling occurred in the *** dysfunction was indicated by the elevated E value,mitral E/A ratio,and E/e’ratio,decreased e’value and maximal velocity of re-lengthening(-dL/dt),and prolonged re-lengthening in HFpEF *** effects of these processes were alleviated by ***,berberine ameliorated autophagic flux,alleviated Drp1 mitochondrial localization,mitochondrial Ca^(2+)overload and fragmentation,and promoted intracellular Ca^(2+)reuptake into sarcoplasmic reticulum by regulating phospholamban and ***,berberine alleviated diastolic dysfunction in“two-hit”diet-induced HFpEF model possibly because of the promotion of autophagic flux,inhibition of mitochondrial fragmentation,and cytosolic Ca^(2+)overload.

关键词： HFpEF berberine Drpl autophagy Ca^(2+)

The *** "Iron Triangle" in Policy-Making Process

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Contemporary International Relations 2002年第8期12卷 1-20页

作者： yang mingjie Research Professor and Director at Division for Arms Control and Security Studies China Institute of Contemporary International Relations

Over the years the defense industry has become a de facto participant in the policy-making process. As in other areas dominated by big business interests, a policy sub-government of "iron triangle" has emerged. In the... 详细信息

关键词： in Policy-Making Process Iron Triangle The U.S.Defense

Sino-U.S. Strategic Cognition and East Asian Regional Security

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Peace 2018年第3期 22-24页

作者： yang mingjie CPAPD Institute of Taiwan Studies CASS

Along with deepening adjustments and changes in the world strategic architecture, the security situation in East Asia is undergoing complex and in-depth changes. As two major countries of vital importance in the region,strategic cognition of China and the United States not only affects the future of bilateral relations, but also will have a far-reaching impact on the regional situation and order. At present.

关键词： Strategic Cognition East Asian Regional Security Sino-U.S

Historical Experience for and Realistic Challenges to Building Security Order in the Asia-Pacific Region

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Peace 2019年第3期 34-35页

作者： yang mingjie CPAPD Executive Council Institute of Taiwan Studies Chinese Academy of Social Sciences

Compared with the rest of the world,the Asia-Pacific region has maintained a relatively stable and prosperous overall posture in the past three *** the ups and downs of hot security issues in the region,they have been... 详细信息

关键词： Security Historical Experience Realistic Challenges to Building Security Order Asia-Pacific Region

Common Economic Development Remains the Principal Driving Force in the Region

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Contemporary International Relations 2013年第6期23卷 38-41页

作者： yang mingjie Li Hongli CICIR

Security issues have become the focus of *** and politicians examining the recent changes to China’s periphery *** includes such issues as territorial and maritime disputes,changes to ally networks brought about by t... 详细信息

关键词：经济发展驱动力国家安全政策安全问题安全环境政治家中国美国

Changes in International Nuclear Arms Control and the Implications for China

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Contemporary International Relations 2010年第B9期20卷 102-111页

作者： yang mingjie Guo Xiaobing Liu Chong mingjie Vice President of CICIR. Associate Research Professor Institute of Arms Control andSecurity Studies CICIR. Researcher Institute of Arms Control and Security Studies CICIR.

International nuclear arms control regimes have changed and improved greatly since the end of the Cold War. These regimes are now being adjusted based on the concept of "a nuclear-free world",with China playing a constructive role. Although these adjustments provide China with the opportunity to play a more influential part,they have also placed her under greater diplomatic pressure.

关键词：中国国际变迁控制度核武器调整压力