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Two New Isosteroid Alkaloids from Fritillaria monatha Migo（Ⅲ）

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Chinese Chemical Letters 2006年第5期17卷 631-634页

作者： Hong Ning LIU Fei LI Yong ming LUO Wei feng zhu Jiangxi University of Traditional Chinese Medicine Nanchang 330004

Two new isosteroid alkaloids, named pengbeimine A and pengbeimine C, were isolated from the fresh bulbs of FritiUaria monatha Migo. Their structures were determined by spectral methods, and were proved by X-ray diffra... 详细信息

关键词： Fritillaria monatha Migo isosteroid alkaloids pengbeimine A pengbeimine C.

Steroidal alkaloids from the bulbs of Fritillaria monatha

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Chinese Chemical Letters 2008年第5期19卷 544-546页

作者： Hong Ning Liu Fei Li Yong ming Luo Wei feng zhu Jiangxi University of Traditional Chinese Medicine Nanchang 330004 China

Two new Steroidal alkaloids, named pengbeisine A and pengbeisine B, were isolated from the fresh bulbs of Fritillaria monatha Migo. along with a known alkaloid. The structures were characterized as 22,26-imino-17, 23-oxido-5α-jerv-6-oxo-2α,3β-diol and 22, 26-imino-17, 23-oxido-5α-jerv-6-oxo-2β,3α-diol on the basis of spectroscopic methods.

关键词： Fritillaria monatha Migo Steroidal alkaloids Pengbeisine A Pengbeisine B

Singlet pairing gaps of neutrons and protons in hyperonic neutron stars

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Research in Astronomy and Astrophysics 2015年第5期15卷 725-732页

作者： Yan Xu Cheng-Zhi Liu Cun-Bo Fan Xing-Wei Han Xiao-Jun Zhang ming-feng zhu Hong-Yan Wang Guang-Zhou Liu Changchun Observatory National Astronomical Observatories Chinese Academy of Sciences College of Physics Jilin University College of Physics Beihua University

The ^1 S0 nucleonic superfluids are investigated within the relativistic meanfield model and Bardeen-Cooper-Schrieffer theory in hyperonic neutron stars. The ^1 S0 pairing gaps of neutrons and protons are calculated based on the Reid soft-core interaction as the nucleon-nucleon interaction. In particular, we have studied the influence of degrees of freedom for hyperons on the ^1 S0 nucleonic pairing gap in neutron star matter. It is found that the appearance of hyperons has little impact on the baryonic density range and the size of the ^1S0 neutronic pairing gap; the ^1S0 protonic pairing gap also decreases slightly in this region where ρB = 0.0-0.393 fm^-3. However, if baryonic density becomes greater than 0.393 fm^-3, the ^1S0 protonic pairing gap obviously increases. In addition, the possible range for a protonic superfluid is obviously enlarged due to the presence of hyperons. In our results, the hyperons change the 1 So protonic pairing gap, which must change the cooling properties of neutron stars.

关键词： dense matter -- (stars) pulsars general --equation of state

Direct Urca processes involving hyperons in neutron star matter

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Chinese Science Bulletin 2014年第3期59卷 273-278页

作者： Yan Xu Guang-Zhou Liu Cheng-Zhi Liu Cun-Bo Fan Xing-Wei Han Xiao-Jun Zhang Hong-Yan Wang ming-feng zhu Yu Meng Changchun Observatory National Astroomical ObservatoriesChinese Academy of Sciences Center for Theoretical Physics Jilin University College of Physics Beihua University College of Optical and Electronical Information Changchun University of Science and Technology

The presence of the isovector scalar interaction in neutron star matter is considered by exchangingδmeson;we study the effects ofδmesons on the direct Urca processes involving *** calculation is based on the framework of the relativistic mean field *** our analysis,the hyperon direct Urca processes under beta equilibrium are open at lower densities due toδmesons,which create a larger energy gap between two baryons in the ***δmeson leads to an obvious enhancement of the neutrino emissivity for the hyperon direct Urca *** particular,the relativistic neutrino emissivity is found to be substantially larger than predicted in the nonrelativistic approach whetherδmesons appear in an neutron star or *** our results,δmesons not only change the baryons properties,but also result in more rapid cooling rate of neutron stars by hyperon direct Urca processes.

关键词：中子星物质超子相对论平均场理论同位旋矢量相互作用非相对论中微子发射率

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期68卷 128-135页

作者： Xiao Xiang feng Gao Yu-Gui Peng Peng Wu Zong-Lin Li Xue-feng zhu School of Physics and Innovation Institute Huazhong University of Science and TechnologyWuhan 430074China

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of L_(x) and/or L_(y),we unambiguously demonstrate the first-order Möbius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

Precision-Engineered Construction of Proton-Conducting Metal-Organic Frameworks

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Nano-Micro Letters 2025年第4期17卷 230-274页

作者： Liyu zhu Hongbin Yang Ting Xu feng Shen Chuanling Si State Key Laboratory of Biobased Fiber Manufacturing Technology Tianjin Key Laboratory of Pulp and PaperTianjin University of Science and Technology300457 TianjinPeople’s Republic of China State Key Laboratory of Pulp and Paper Engineering South China University of Technology510640 GuangzhouPeople’s Republic of China Agro-Environmenta Protection Institute Ministry of Agriculture and Rural Affairs300191 TianjinPeople’s Republic of China Robustnique Co.Ltd. Block CPhase IIPioneer ParkLanyuan Road300384 TianjinPeople’s Republic of China

Proton-conducting materials have attracted considerable interest because of their extensive application in energy storage and conversion *** them,metal-organic frameworks(MOFs)present tremendous development potential and possibilities for constructing novel advanced proton conductors due to their special advantages in crystallinity,designability,and *** particular,several special design strategies for the structure of MOFs have opened new doors for the advancement of MOF proton conductors,such as charged network construction,ligand functionalization,metal-center manipulation,defective engineering,guest molecule incorporation,and pore-space *** the implementation of these strategies,proton-conducting MOFs have developed significantly and profoundly within the last ***,in this review,we critically discuss and analyze the fundamental principles,design strategies,and implementation methods targeted at improving the proton conductivity of MOFs through representative ***,the structural features,the proton conduction mechanism and the behavior of MOFs are discussed thoroughly and *** endeavors are also proposed to address the challenges of proton-conducting MOFs in practical *** sincerely expect that this review will bring guidance and inspiration for the design of proton-conducting MOFs and further motivate the research enthusiasm for novel proton-conducting materials.

关键词： MOFs Proton conduction Porous materials Fuel cells

Low-profile,low sidelobe array antenna with ultrawide beam coverage for UAV communication

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Chinese Journal of Aeronautics 2025年第1期38卷 444-454页

作者： Mei LI Zhiliang SHANG Lin PU ming-Chun TANG Lei zhu School of Microelectronics and Communication Engineering Chongqing UniversityChongqing 400044China Department of Electrical and Computer Engineering University of MacaoMacao SAR 999078China

This paper presents a design method to implement an antenna array characterized by ultra-wide beam coverage,low profile,and low Sidelobe Level(SLL)for the application of Unmanned Aerial Vehicle(UAV)air-to-ground *** array consists of ten broadside-radiating,ultrawide-beamwidth elements that are cascaded by a central-symmetry series-fed network with tapered currents following Dolph-Chebyshev distribution to provide low ***,an innovative design of end-fire Huygens source antenna that is compatible with metal ground is presented.A low-profile,half-mode Microstrip Patch Antenna(MPA)is utilized to serve as the magnetic dipole and a monopole is utilized to serves as the electric dipole,constructing the compact,end-fire,grounded Huygens source ***,two opposite-oriented end-fire Huygens source antennas are seamlessly integrated into a single antenna element in the form of monopole-loaded MPA to accomplish the ultrawide,broadside-radiating *** consideration has been applied into the design of series-fed network as well as antenna element to compensate the adverse coupling effects between elements on the radiation *** indicates an ultrawide Half-Power Beamwidth(HPBW)of 161°and a low SLL of-25 dB with a high gain of 12 d Bi under a single-layer *** concurrent ultrawide beamwidth and low SLL make it particularly attractive for applications of UAV air-to-ground communication.

关键词： Array antenna Broad beam Fan beam Low sidelobe level Chebyshev synthesis UAV communication

Profile of Dr. Jiaojun zhu

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Science China(Life Sciences) 2025年第2期68卷 311-313页

作者： zhu, Jiaojun

Dr. Jiaojun zhu is the director general of Institute of Applied Ecology(IAE), Chinese Academy of Sciences(CAS)(2018 to present). He received his B.S. degree in Forest Science from Shenyang Agricultural University, China in July 1987, and subsequently joined Institute of Forestry and Soil, CAS(now known as the IAECAS) to pursue his M.S. degree in *** graduation, he served as a research assistant and an associate research fellow in the IAE-CAS from 1990 to 1996.

关键词： Forest pursue assistant

Standardized framework for assessing soil quality at antimony smelting site by considering microbial-induced resilience and heavy metal contamination

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Journal of Environmental Sciences 2025年第2期148卷 306-320页

作者： Shasha Jiang Xiaoyu Deng Liyuan Ma Hongmei Wang Xingjie Wang Liang feng feng zhu Shengguo Xue Arif Mohammad School of Environmental Studies China University of GeosciencesWuhan 430074China School of Engineering Cardiff UniversityCardiff CF243AAUnited Kingdom Institute of Geological Survey China University of GeosciencesWuhan 430074China School of Metallurgy and Environment Central South UniversityChangsha 410083China

Antimony smelting activities damage the soil and vegetation surroundings while generating economic ***,no standardizedmethods are available to diagnose the extent of soil degradation at antimony smelting *** study developed a standardized framework for assessing soil quality by consideringmicrobial-induced resilience and heavymetal contamination at Xikuangshan antimony smelting *** soil resilience index(SRI)and soil contamination index(SCI)were calculated byMinimum Data Set and geo-accumulation model,*** standardized by a multi-criteria quantitative procedure of modified Nemerow’s pollution index(NPI),the integrated assessment of soil quality index(SQI),which is the minimumof SRINPI and SCINPI,was *** results showed that Sb and As were the prominent metal(loid)pollutants,and significant correlations between SQI and SRI indicated that the poor soil quality was mainly caused by the low level of soil *** primary limiting factors of SRI were Fungi in high andmiddle contaminated areas,and Skermanella in low contaminated area,suggesting that the weak soil resilience was caused by low specific microbial *** regulation and phytoremediation are greatly required to improve the soil quality at antimony smelting sites from the perspectives of pollution control and resilience *** study improves our understanding of ecological effects of antimony smelting sites and provides a theoretical basis for ecological restoration and sustainable development of mining areas.

关键词： Antimony smelting site Soil resilience index(SRI) Soil contamination index(SCI) Microorganisms Nemerow’s pollution index(NPI)