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In Situ MAS NMR with Constant Flow of Regents and In situ High Pressure MAS NMR

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In Situ MAS NMR with Constant Flow of Regents and In situ Hi...

Progress of Developing High Temperature and High Pressure MAS NMR

第十七届全国波谱学学术会议

作者： Romulus V. F. Turcu Jesse A. Sears Hardeep S. Mehta David W. Hoyt mary hu Charles H. F. Peden Pacific Northwest National Laboratory RichlandWashington 99354 USA

＜正＞High resolution magic angle spinning （MAS） nuclear magnetic resonance （NMR） spectroscopy is one of the most powerful and versatile techniques for studying molecular structure and dynamics regardless of wheth...

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Progress of Developing High Temperature and High Pressure MA...

Antioxidant Effect of Roasted Barley (Hordeum vulgareL.) Grain Extract towards Oxidative Stress in Vitroand in Vivo

第十七届全国波谱学学术会议

作者： mary Y. hu Donald M. Camaioni Romulus V. F. Turcu Aleksei Vjunov Zizwe Chase Charles H. F. Peden Johannes A. Lercher Pacific Northwest National Laboratory RichlandWA 99354USA

Magic angle spinning (MAS) at both high temperatures (i.e.,greater than about 100 °C) and high pressures (i.e.,the vapor pressure of aqueous water at high temperature) has not yet been realized,although our recent pr...

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Food and Nutrition Sciences 2013年第8期4卷 139-146页

作者： mary Omwamba Feng Li Guiju Sun Qiuhui hu College of Food Science and Technology Nanjing Agricultural University Nanjing China College of Food Science and Technology Nanjing Agricultural University Nanjing China College of Food Science and Technology Nanjing Agricultural University Nanjing China Department of Food Science and Technology Egerton University Egerton Kenya Department of Nutrition and Food Hygiene School of Public Health Southeast University Nanjing China.

The antioxidant activity of extract from roasted barley grain was evaluated by various methods in vitro and in vivo. Results showed that the extract exhibited high antioxidant activities in vitro and in vivo, evidenced by its ability to chelate ferrous ions, scavenge hydroxyl and superoxide radicals, and prevent lipid peroxidation of liver homogenate. The extract significantly increased the total antioxidant capability (T-AOC) in aged mice (P < 0.05). The activities of antioxidant enzymes superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) increased while levels of malondialodehyde (MDA) and manoamine oxidase (MAO) decreased in both the liver and brain of aged mice treated with the extract compared to the control (untreated mice). The results demonstrate potential antioxidant activities and antiaging effect of roasted barley grain. This provides scientific support for the use of roasted barley grain as an antioxidant against oxidative stress.

关键词： Oxidative Stress Roasted Barley Grain Antioxidant Activity Aged Mouse Model

Co-evolved plant and blast fungus ascorbate oxidases orchestrate the redox state of host apoplast to modulate rice immunity

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Molecular Plant 2022年第8期15卷 1347-1366页

作者： Jiexiong hu Muxing Liu Ao Zhang Ying Dai Weizhong Chen Fang Chen Wenya Wang Danyu Shen mary Jeanie Telebanco-Yanoria Bin Ren Haifeng Zhang huanbin Zhou Bo Zhou Ping Wang Zhengguang Zhang Department of Plant Pathology College of Plant ProtectionNanjing Agricultural Universityand Key Laboratory of Integrated Management of Crop Diseases and PestsMinistryof EducationNanjingChina The Key Laboratory of Plant Immunity Nanjing Agricultural UniversityNanjingChina Genetics and Biotechnology Division International Rice Research InstituteLos BanosLaguna 4031Philippines State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Department of Microbiology Immunologyand ParasitologyLouisiana State University Health Sciences CenterNew OrleansLAUSA

Apoplastic ascorbate oxidases(AOs)play a critical role in reactive oxygen species(RoS)-mediated innate host immunity by regulating the apoplast redox *** date,little is known about how apoplastic effectors of the riceblast fungus Magnaportheoryzaemodulate the apoplast redox state of rice to subvert plant *** this study,we demonstrated that *** MoAo1 is an Ao that plays a role in virulence by modulating the apoplast redox status of rice *** showed that MoAo1 inhibits the activity of rice OsAO3and OsAO4,which also regulate the apoplast redox status and plant *** addition,we found that MoAo1,OsAO3,andOsAO4 allexhibit polymorphic variations whosevaried interactions orchestrate pathogen virulence and rice *** together,our results reveal a critical role for extracellular redox enzymes during rice blast infection and shed light on the importance of the apoplast redox state anditsregulation inplant-pathogeninteractions.

关键词： apoplast redox state RoS ascorbate oxidase polymorphism rice blast host immunity

Recycling strategies for vitrimers

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International Journal of Smart and Nano Materials 2022年第3期13卷 367-390页

作者： Haochuan Zhang Jingjing Cui Guang hu Biao Zhang Frontiers Science Center for Flexible Electronics(FSCFE) Ningbo Institute of Northwestern Polytechnical UniversityNorthwestern Polytechnical UniversityXi’anShaanxiChina Queen mary University of London Engineering School Northwestern Polytechnical University(NPU)Xi’anP.R.China

Vitrimer is a new type of material that combine the advantages of thermoplastic and thermoset *** rapid dynamic exchange reactions at high temperature allow the topology of cross-linked networks to change and rearrange while keeping material structures and properties *** concept of vitrimer has emerged to provide a viable strategy for the recycling of highperformance polymer materials,and lots of research works have been carried out for the development of various types of *** addition,the recycling strategies for vitrimers are particularly important to determine the performance and potential applications of the recovered ***,it is an innovative and valu-able perspective to discuss vitrimer materials according to their different recycling *** this review,we start with a brief overview of vitrimers,and then,focus on recycling strategies for ***,we highlight the advantages and disadvan-tages of the two different recycling strategies:physical and chemi-cal recycling methods,and then explore the feasibility of upcycling vitrimers using 3D printing ***,the impact of recy-cling strategies on vitrimer materials and the prospects for max-imizing the use of vitrimer materials are discussed.

关键词： Vitrimers chemical recycling physical recycling 3D printing

Homogeneous and heavy potassium isotopic composition of global oceans

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Science Bulletin 2019年第23期64卷 1740-1742页

作者： Madeline Hille Yan hu Tian-Yi huang Fang-Zhen Teng Isotope Laboratory Department of Earth and Space Sciences University of Washington

The oceans are an important interface for chemical exchange between the continents,the seafloor,and the *** weathering of continental silicate rocks removes atmospheric CO2 and releases rock-forming cations to the oce... 详细信息

关键词： oceans isotopic runoff

A multi-center, double-blind, randomized, parallel group study to evaluate the effects of two different doses of losartan on morbidity and mortality in Chinese patients with symptomatic heart failure intolerant of angiotensin converting enzyme inhibitor treatment

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Chinese Medical Journal 2012年第21期125卷 3868-3874页

作者： hu Da-yi huANG Jun CAI Nai-sheng Zhu Wen-ling LI Yi-shi Rachid Massaad mary E. Hanson Kenneth Dickstein Department of Cardiology Peking Universi(y People's ttospitaloBeijing 100044 China Department of Cardiology Jiangsu Province ttospital NaE~jingJiangsu 210029 China Department of Cardiology Zhongshan Hospital I~:udan UniversityShanghai 200032 China Department of Cardiology Peking Union Medical CollegeHospital Beijing 100730 China Clinical Pharmacology Center Fu Wai ttospital Beijing 100037China Department of Biostatistics MSD (Europe) Inc. BrusselsBelgium Global Scientific and Medical Publications Merck Sharp &Dohme Corp. Whitehouse Station NJ USA Department of Cardiology University of Bergen StavangerUniversity Hospital Stavanger Norway

Background There have been no mortality/morbidity endpoint studies with Iosartan in Chinese heart failure patients. The objective was to evaluate the effects of high-dose vs. low-dose Iosartan on clinical outcomes in ... 详细信息

关键词： angiotensin converting enzyme inhibitor, heart failure losartan

Impact crater recognition methods:A review

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Science China Earth Sciences 2024年第6期67卷 1719-1742页

作者： Dong CHEN Fan hu Liqiang ZHANG Yunzhao WU Jianli DU Jiju PEETHAMBARAN College of Civil Engineering Nanjing Forestry UniversityNanjing 210037China Department of Geography State Key Laboratory of Remote Sensing ScienceFaculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China Key Laboratory of Space Object and Debris Observation Chinese Academy of SciencesNanjing 210023China Department of Mathematics and Computing Science Saint Mary’s UniversityHalifaxNS B3H 3C3Canada

Impact craters are formed due to the high-speed collisions between small to medium-sized celestial *** is the most significant driving force in the evolution of celestial bodies,and the impact craters provide crucial insights into the formation,evolution,and impact history of celestial *** this paper,we present a detailed review of the characteristics of impact craters,impact crater remote sensing data,recognition algorithms,and applications related to impact *** first provide a detailed description of the geometric texture,illumination,and morphology characteristics observed in remote sensing data of *** we summarize the remote sensing data and cataloging databases for the four terrestrial planets(i.e.,the Moon,Mars,Mercury,and Venus),as well as the impact craters on ***,we study the advancement achieved in the traditional methods,machine learning methods,and deep learning methods applied to the classification,segmentation,and recognition of impact ***,based on the analysis results,we discuss the existing challenges in impact crater recognition and suggest some ***,we explore the implementation of impact crater detection algorithms and provide a forward-looking perspective.

关键词： Terrestrial planets Deep space exploration Impact crater Impact crater recognition Deep learning

Deformation behavior and constitutive model for dual-phase Mg-Li alloy at elevated temperatures

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Transactions of Nonferrous Metals Society of China 2016年第2期26卷 508-518页

作者：魏国兵彭晓东胡发平 Amir HADADZADEH 杨艳谢卫东 mary A.WELLS 重庆大学材料科学与工程学院重庆400044 Mechanical and Mechatronics Engineering Department University of Waterloo

In order to study the deformation behavior and evaluate the workability of the dual-phase Mg-9Li-3Al-2Sr alloy, isothermal hot compression tests were conducted using the Gleeble-3500 thermal-mechanical simulator, in ranges of elevated temperatures （423-573 K） and strain rates （0.001-1 s^-1）. Plastic instability is evident during the deformation which is in the form of serrated flow; serrated yielding is attributed to the locking of mobile dislocations by the Mg and Li atoms which diffuse during the deformation. The relationships between flow stress, strain rate and deformation temperature were analyzed and the deformation activation energy and some basic material factors at different strains were calculated using the Arrhenius equation. The effects of temperature and strain rate on deformation behavior were represented using the Zener–Hollomon parameter in an exponent-type equation. To verify the validity of the constitutive model, the predicted values and experimental flow curves under different deformation conditions were compared, the correlation coefficient （0.9970） and average absolute relative error （AARE=4.41%） were calculated. The results indicate that the constitutive model can be used to accurately predict the flow behavior of dual-phase Mg-9Li-3Al-2Sr alloy during high temperature deformation.

关键词： constitutive model Mg-Li alloy plastic instability Zener-Hollomon parameter