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TWO　NEW　TRITERPENOID　SAPONINS，ASTERBATANOSIDE　D　ANDE，FROM　ASTER　SATANGENSIS

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Chinese Chemical Letters 1994年第11期5卷 941-944页

作者： Yu SHAO and Bing Nan Zhou kan ma and hou ming wu (Shanghai Institute of materia Medica, Academia Sinica,Shanghai 20O031 Shanghai Institute of Organic Chemistry,Academia Sinica, Shanghai 200032)

Two new triterpenoid saponins named asterbatanoside D and E have been isolated from Aster batgngensis and their structures elucidated as 3-O-β-D-glucopyranosyl-bayogenin-28-O- β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside and 3-O-6'-acetyl-β-D-glucopyranosyl-bayogenin-28-O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl. based on MS, 1D and 2D NMR techniques (COSY,TOCSY,ROESY, HMQC and HMBC), and Chemical reactions.

关键词： ASTERBATANOSIDE TRITERPENOID TWO NEW SAPONINS SATANGENSIS ANDE FROM

Plasmon-enhanced ultra-high photoresponse of single-wall carbon nanotube/copper/silicon near-infrared photodetectors

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Nano Research 2024年第7期17卷 5930-5936页

作者： Yi-ming Zhao Xian-Gang Hu Chao Chen Zuo-Hua Wang An-Ping wu Hong-Wang Zhang Peng-Xiang hou Chang Liu Hui-ming Cheng Shenyang National Laboratory for materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling College of Mechanical EngineeringYanshan UniversityQinhuangdao 066004China Faculty of materials Science and Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Single wall carbon nanotube(SWCNT)/Si heterojunction photodetectors have the advantages of high photoresponse ability and simple structure,however,their detection wavelength range are usually lower than 1100 nm,which limits their application in the infrared *** report a SWCNT/Cu/Si photodetector with both a high photoresponse and a detection range up to the infrared band by depositing a Cu nanoparticles(NPs)layer between a SWCNT film and a n-Si *** was found that the Cu NPs produce strong surface plasmon resonance(SPR)under laser irradiation,which breaks through the limitation of Si band gap and greatly improves the photoresponse of the SWCNT/Cu/Si photodetector in the near infrared *** responsivity(R)of the photodetector in the wavelength range of 1850–1200 nm reached 2.2–14.15 ma/W,which is the highest value in the reported plasmon enhanced n-Si based photodetectors,and about 20,000 times higher than that of a SWCNT/Si *** R value for 1550 nm wavelength used in optical communications reached~8.2 ma/W,which is 64%higher than the previously reported values of commonly used *** attribute the significant increase to the strong SPR and low Schottky barrier of Cu with n-Si,which facilitates the generation and transfer of the carriers.

关键词： single wall carbon nanotube photodetector silicon surface plasmon resonance copper

Binary trinuclear metal-oxo sub-nanomaterials for photocatalytic hydrogen and chlorine production from seawater

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Susmat 2022年第6期2卷 708-719页

作者： Yang Wang Litong Shi Haijun Hu Bingzhi Qian Wei hou Hui Li Xue Liu Daliang Liu Shuyao wu Hongwei Huang Xi-ming Song Yu Zhang Tianyi ma Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced materials College of ChemistryInstitute of Clean Energy ChemistryLiaoning UniversityShenyangChina School of materials Science and Engineering Jiujiang UniversityJiujiangChina Centre for Translational Atomaterials Swinburne University of TechnologyHawthornVictoriaAustralia School of Science RMIT UniversityMelbourneVICAustralia Beijing Key Laboratory of materials Utilization of Nonmetallic Minerals and Solid Wastes School of Materials Science and TechnologyChina University of GeosciencesBeijingChina

Owing to the need for regenerant and self-reduction problem,the hydrogen performance of sub-nano-sized trinuclear iron-oxo complexes is still far from satisfied with affordability and ***,two binary photocatalytic systems based on trinuclear metal-oxo complexes have been first constructed and experimentally confirmed to be competent for seawater hydrogen evolution(715.4and271.9μmol of hydrogen can be found,respectively,after 48h).Notably,chloride ions act as the hole catcher and move into the gas phase in the stable form of *** to heterogeneous structures,homogeneous systemsnot only enhance the hydrogen performance while ensuring the stability of metal-oxo complexes,but also shorten the consumption of photogenerated carriers by dissolved impurities in the *** new attempt of building pluralistic sub-nanometric systems may offer novel design strategies with noble-metal-free catalysts and low-cost candidates for traditional semiconductor materials in enhancing photocatalytic efficiency and performing chlorine evolution from seawater splitting.

关键词： photocatalytic hydrogen evolution seawater splitting sub-nanometric material trinuclear metal-oxo complex

A NEW SAPONIN, HAINANEOSIDE A FROM maRSDENIA HAINANENSIS

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Chinese Chemical Letters 1994年第3期5卷 209-210页

作者： Bao Xia ma Tian Zheng FANG(Department of Pharmacy, Tongiin Hospital, Tongji Medical University, wuhan 430030)Chang Song JIANG Wei Pei DING(Family Planning Research Inshtute, Tonji Medical University, wuhan 430030)kan ma Jia Hong NI hou ming wu(State K

A new Steroid saponin Hainaneoside A was isolated from marsdenia hainanensis.(1) The Structure has been elucidated as 12-nicotinoyl sarcostin-3-O-β-D-glucopyranoSyl-(1→4)- 3- O- methyl- 6- deoxy-β-D-allopyranosyl- (1→4)-β-D oleandropyranoSyl-(1→4)-β- D- cymaropyranosyl-(1→4)- cymaropyranoside by using modern 2D nmr spectroscopic techniques.

关键词：

Vaccariside A, Novel Saponin from Vaccaria segetalis (Neck.) Garcke

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Chinese Chemical Letters 1999年第11期10卷 921-924页

作者： Ji ma Wen Cat YE hou ming wu Fa Hu HE Jing Zhen DENG Shou Xun ZHAO( Department of Phytochemistry, China Pharmaceutical University, Naming 210009)(State Key Laboratory of Bioorganic and Natural Products Chemistry.Shanghai institute of organic Chemistry China Pharmaceut Univ Dept Phytochem Nanjing 210009 Peoples R China Chinese Acad Sci Shanghai Inst Organ Chem State Key Lab Bioorgan & Nat Prod Chem Shanghai 200032 Peoples R China

A new triterpenoid saponin, vaccariside A 1 was isolated from the seeds of l'accaria segetalis using various chromatographic methods. The structure of compound 1 was elucidated by comprehensive spectroscopic analysis as 3-O-beta-D-galactopyranosyl-(1-2)-[beta-D-quinovpyranosyl-(1-4)-beta-D-xylopyranosyl-(1-3)]-beta-D-glucuronopyranosyl quillaic acid 28-O-beta-D-glucopyranosyl-(1-3)-[beta-D-xylopyranosyl-(1-4)]-alpha-L-rhamnopyranosyl-(1-2)-3-O-acetyl-beta-D-fucopyranoside.

关键词： vaccariside A. saponin Vaccaria segetalis

Persisting lung pathogenesis and minimum residual virus in hamster after acute COVID-19

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Protein & Cell 2022年第1期13卷 72-77页

作者： Lunzhi Yuan Huachen Zhu ming Zhou Jian ma Rirong Chen Liuqin Yu Wenjia Chen Wenshan Hong Jia Wang Yao Chen Kun wu Wangheng hou Yali Zhang Shengxiang Ge Yixin Chen Quan Yuan Qiyi Tang Tong Cheng Yi Guan Ningshao Xia State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics National Institute of Diagnostics and Vaccine Development in Infectious DiseasesSchool of Life SciencesSchool of Public HealthXiamen UniversityXiamen 361000China State Key Laboratory of Emerging Infectious Diseases The University of Hong KongHong KongChina Joint Institute of Virology(Shantou University and The University of Hong Kong) Guangdong-Hongkong Joint Laboratory of Emerging Infectious DiseasesShantou UniversityShantou 515063China Department of Microbiology Howard University College of MedicineWashingtonDC 20059USA Research Unit of Frontier Technology of Structural Vaccinology Chinese Academy of Medical SciencesXiamen 361102China

Dear Editor,Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has infected more than 200 million people,causing coronavirus disease 2019(COVID-19)*** are the primary target organ of SARS-CoV-2 *** mild COVID-19 cases develop symptoms of fever,fatigue,muscle weakness,chest pain,headache and cough(Chen et al.,2020;Wang et al.,2020;Zhu et al.,2020),while severe COIVD-19 cases might have pneumonia,breathing difficulties,multiple organ failure and death(Chen et al.,2020;Wang et al.,2020;Zhu et al.,2020).Both the clinicians and researchers have largely focused on the acute phase of COVID-19,but the long-term health consequences of the COVID-19 patients after clinical recovery remain less *** clinical cohorts demonstrated that some patients discharged from hospital still experience symptoms including fatigue,muscle weakness,chest pain,cough and breathing difficulties(Carfi et al.,2020;Lim et al.,2020;Huang et al.,2021).Moreover,severely impaired pulmonary diffusion capacities and abnormal chest imaging manifestations were observed in some convalescent patients(Huang et al.,2021).Surprisingly,residual virus(An et al.,2020;Yao et al.,2020;Kim et al.,2021)were detected in some convalescent patients.

关键词： acute impaired pathogenesis

Terahertz spectral analysis of Yunpian Lurong

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TMR Modern Herbal Medicine 2019年第2期2卷 83-90页

作者： Li-Na Zhang Yu-Hui ma Ze-Jia Zhang Kai-Xuan hou Yan-ming wu Guo-Wei Zhang College of Traditional Chinese Medicine Hebei University Baoding China School of Electronics and Information Engineering Hebei University Baoding China

Objective: Provide a rapid and simple method to identify Yunpian Lurong. Method: Terahertz spectroscopy was used to detect Yunpian Lurong. Result: Compared with the reference wave, the spectral amplitude of Yunpian Lurong decreases significantly. The frequency - domain spectra of Yunpian Lurong are different from conventional Lurong. Compared with the spectrum of free space, both of them have obvious absorption to THz wave, but the intensity and location of absorption are different, which provides a basis for the identification of Yunpian Lurong. The refractive index of the two samples is obviously different, which may be related to the different internal structure and composition content of the samples. The absorption coefficient of the two samples are different as well, when the frequency ranges from 0 to 2.4 THz, the absorption coefficients of the two kinds of Lurong samples have obvious difference, which makes it easy to distinguish the Yunpian Lurong. Conclusion: This study proves that terahertz spectroscopy can be used as an efficient and convenient method to identify Yunpian Lurong.

关键词： Terahertz Time-domain Spectroscopy Yunpian Lurong Index of Refraction Absorption Coefficients

Stepped-up development of accelerator mass spectrometry method for the detection of ^(60)Fe with the HI-13 tandem accelerator

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Nuclear Science and Techniques 2024年第4期35卷 136-143页

作者： Yang Zhang Sheng-Quan Yan ming He Qing-Zhang Zhao Wen-Hui Zhang Chao-Xin kan Jian-ming Zhou kang-Ning Li Xiao-Fei Wang Jian-Cheng Liu Zhao-Hua Peng Zhuo Liang Ai-Ling Li Jian Zheng Qi-Wen Fan Yun-Ju Li You-Bao Wang Zhi-Hong Li Yang-Ping Shen Ding Nan Wei Nan Yu-Qiang Zhang Jia-Ying-Hao Li Jun-Wen Tian Jiang-Lin hou Chang-Xin Guo Zhi-Cheng Zhang ming-Hao Zhu Yu-Wen Chen Yu-Chen Jiang Tao Tian Jin-Long ma Yi-Hui Liu Jing-Yu Dong Run-Long Liu Mei-Yue-Nan ma Yong-Shou Chen Wei-Ping Liu Bing Guo China Institute of Atomic Energy P.O.Box 275(10)Beijing 102413China College of Science Southern University of Science and TechnologyShenzhen 518055China School of Physics Xi’an Jiaotong UniversityXi’an 710049China

The Moon provides a unique environment for investigating nearby astrophysical events such as *** samples retain valuable information from these events,via detectable long-lived“fingerprint”radionuclides such as^(60)*** this work,we stepped up the development of an accelerator mass spectrometry(AMS)method for detecting^(60)Fe using the HI-13tandem accelerator at the China Institute of Atomic Energy(CIAE).Since interferences could not be sufficiently removed solely with the existing magnetic systems of the tandem accelerator and the following Q3D magnetic spectrograph,a Wien filter with a maximum voltage of±60 kV and a maximum magnetic field of 0.3 T was installed after the accelerator magnetic systems to lower the detection background for the low abundance nuclide^(60)Fe.A 1μm thick Si_(3)N_(4) foil was installed in front of the Q3D as an energy *** particle detection,a multi-anode gas ionization chamber was mounted at the center of the focal plane of the ***,an^(60)Fe sample with an abundance of 1.125×10^(-10)was used to test the new AMS *** results indicate that^(60)Fe can be clearly distinguished from the isobar^(60)*** sensitivity was assessed to be better than 4.3×10^(-14)based on blank sample measurements lasting 5.8 h,and the sensitivity could,in principle,be expected to be approximately 2.5×10^(-15)when the data were accumulated for 100 h,which is feasible for future lunar sample measurements because the main contaminants were sufficiently separated.

关键词： Accelerator mass spectrometry Wien filter Isobar separation Supernovae Chang'e-5 lunar samples

基于GT-Power的DPF喷油催化燃烧再生仿真技术

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北京理工大学学报 2011年第1期31卷 19-23页

作者：侯献军马义彭辅明颜伏伍张献安武汉理工大学汽车工程学院湖北武汉430070 现代汽车零部件技术湖北省重点实验室湖北武汉430070 平原航空设备有限公司河南新乡453019

利用GT-Power软件建立DPF喷油催化燃烧再生系统仿真模型,从喷油率和补气策略两方面对DPF提温过程进行优化,优化后的DPF提温时间缩短了37.9%,DPF出口最高温度增加了3.4%.通过建立DPF微粒燃烧模型,分析了再生微粒燃烧过程中载体壁面温度... 详细信息

利用GT-Power软件建立DPF喷油催化燃烧再生系统仿真模型,从喷油率和补气策略两方面对DPF提温过程进行优化,优化后的DPF提温时间缩短了37.9%,DPF出口最高温度增加了3.4%.通过建立DPF微粒燃烧模型,分析了再生微粒燃烧过程中载体壁面温度及微粒(PM)层厚度分布情况.计算结果表明,载体温度由前端向后依次升高,最高温度出现在载体后端中心;微粒由载体前端向后逐渐燃烧,后端微粒燃烧速度快于前端.

关键词： GT—Power 微粒捕集器再生仿真