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An ecological perspective on Joseph Rock’s(1884-1962)plant collection activities in China

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Journal of Plant Ecology 2024年第4期17卷 100-113页

作者： Jifan Luo Ruozhi huang hai Yan Renwu Wu Shuai Liao Zhoubing Xiang Yongxi Zou Liangchen Shi Ke Wang Zhiyi Bao College of Landscape Architecture Zhejiang Agriculture and Forestry UniversityHangzhou 311300China Zhejiang Agriculture and Forestry University Landscape Architecture Institute Hangzhou 311300China South China Botanical Garden Chinese Academy of SciencesGuangzhou 510650China

In the early 20th century,numerous western botanists,often referred to as‘plant hunters’,embarked on ambitious expeditions to China,playing a crucial role in the study of botany and botanical *** their contributions,comprehensive assessments of their explorations are *** bridge this gap,this article focuses on the work of Joseph Charles Francis Rock,a notable figure in that *** work revisits Rock’s botanical expeditions within the broader context of botanical diversity *** outlines his historical experiences in collecting plants in China and enumerates the species composition and phenotypic traits of the plants he ***,it also analyzes the spatial distribution of the species,the completeness of his collection and the α-and β-diversity of the plants he *** findings reveal that Rock led four major botanical expeditions in China between 1922 and 1933,amassing a total of 28184 sheets and 16608 numbers across 204 families,1081 genera and 4231 *** focus was predominantly on ornamental species,which exhibit a variety of flower colors and *** collection work spanned 5 provinces,35 cities and 72 counties,with a notable concentration in the Hengduan Mountains,a current biodiversity *** study not only reconstructs Rock’s botanical legacy but also offers valuable historical data and fresh analytical insights for understanding contemporary plant *** contributes to the ongoing discourse on the importance of preserving plant diversity as a cornerstone of environmental sustainability.

关键词： Joseph Charles Francis Rock plant specimen collection history plant diversity plant collector

Pressure-induced color change arising from transformation between intra-and inter-band transitions in LuH_(2±x)N_(y)

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Science China(Physics,Mechanics & Astronomy) 2024年第2期67卷 161-166页

作者： Zhe Liu Yingjie Zhang Shenyang huang Xue Ming Qing Li Chenghao Pan Yaomin Dai Xiaoxiang Zhou Xiyu Zhu Hugen Yan hai-Hu Wen Center for Superconducting Physics and Materials National Laboratory of Solid State Microstructures and Department of PhysicsNational Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China State Key Laboratory of Surface Physics Key Laboratory of Micro and Nano-Photonic Structures of the Ministry of EducationDepartment of PhysicsFudan UniversityShanghai 200433China

The pressure-induced color change in the nitrogen-doped lutetium hydride has triggered extensive discussions about the underlying physics and potential ***,we study the optical response of LuH_(2±x)N_(y)in a broad frequency range at ambient pressure and its evolution with pressure in the visible spectral *** broad-band optical spectra at ambient pressure reveal a Drude component associated with intra-band electronic transitions and two Lorentz components(L1 and L2)arising from inter-band electronic *** application of pressure causes a spectral weight transfer from L1 to the Drude component,leading to a blue shift of the plasma edge in the reflectivity spectrum alongside a reduction of the high-frequency *** results suggest that the pressure-induced color change in LuH_(2±x)N_(y)is closely related to the transformation between intra-and inter-band electronic transitions,providing new insights into the mechanism of the pressure-induced color change in LuH_(2±x)N_(y).

关键词： nitrogen-doped lutetium hydride optical spectroscopy high-pressure technique color change

Advancements of Macrophages Involvement in Pathological Progression of Colitis-Associated Colorectal Cancer and Associated Pharmacological Interventions

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Chinese Journal of Integrative Medicine 2024年第6期30卷 565-576页

作者： KE Jun-yu SONG Jin-bin LI Long HE Zhen-fan huang Zhuo-jian LIU Zheng-lin CHEN Gui-rong WANG hai-yan WEN Su-ru ZHOU Heng-li MA Hui-lin DU Qun WU Yong-qiang LI Yan-wu CHEN Xin-lin School of Basic Medical Sciences Guangzhou University of Chinese MedicineGuangzhou510006China Department of Surgery II Gaozhou Hospital of Traditional Chinese Medicine Affiliated to Guangzhou University of Chinese MedicineGaozhou525200China Science and Technology Innovation Center Guangzhou University of Chinese MedicineGuangzhou510405China The First Clinical Medical College of Guangzhou University of Traditional Chinese Medicine Guangzhou510405China

Intestinal macrophages play crucial roles in both intestinal inflammation and immune homeostasis. They can adopt two distinct phenotypes, primarily determined by environmental cues. These phenotypes encompass the classically activated pro-inflammatory M1 phenotype, as well as the alternatively activated anti-inflammatory M2 phenotype. In regular conditions, intestinal macrophages serve to shield the gut from inflammatory harm. However, when a combination of genetic and environmental elements influences the polarization of these macrophages, it can result in an M1/M2 macrophage activation imbalance, subsequently leading to a loss of control over intestinal inflammation. This shift transforms normal inflammatory responses into pathological damage within the intestines. In patients with ulcerative colitis-associated colorectal cancer (UC-CRC), disorders related to intestinal inflammation are closely correlated with an imbalance in the polarization of intestinal M1/M2 macrophages. Therefore, reinstating the equilibrium in M1/M2 macrophage polarization could potentially serve as an effective approach to the prevention and treatment of UC-CRC. This paper aims to scrutinize the clinical evidence regarding Chinese medicine (CM) in the treatment of UC-CRC, the pivotal role of macrophage polarization in UC-CRC pathogenesis, and the potential mechanisms through which CM regulates macrophage polarization to address UC-CRC. Our objective is to offer fresh perspectives for clinical application, fundamental research, and pharmaceutical advancement in UC-CRC.

关键词： macrophage ulcerative colitis colon cancer Chinese medicine

Impact of volcanism on the formation and hydrocarbon generation of organic-rich shale in the Jiyang Depression, Bohai Bay Basin, China

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Petroleum Science 2024年第3期21卷 1539-1551页

作者： Jia-Hong Gao Xin-Ping Liang Zhi-Jun Jin Quan-You Liu Chang-rong Li Xiao-Wei huang Ju-Ye Shi Peng Li State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Efficient Development Institute of EnergyPeking University Petroleum Exploration and Production Research Institute SINOPECBeijing100871 China School of Energy Resources China University of Geosciences Beijing100083 China

Globally,most organic-rich shales are deposited with volcanic ash *** ash,a source for many sedimentary basins,can affect the sedimentary water environment,alter the primary productivity,and preserve the organic matter(OM)through physical,chemical,and biological *** an increasing number of breakthroughs in shale oil exploration in the Bohai Bay Basin in recent years,less attention has been paid to the crucial role of volcanic impact especially its influence on the OM enrichment and hydrocarbon ***,we studied the petrology,mineralogy,and geochemical characteristics of the organic-rich shale in the upper submember of the fourth member(Es_(4)^(1))and the lower submember of the third member(Es_(3)^(3))of the Shahejie Formation,aiming to better understand the volcanic impact on organic-rich shale *** results show that total organic carbon is higher in the upper shale intervals rich in volcanic ash with enriched light rare earth elements and moderate Eu *** indicates that volcanism promoted OM formation before or after the *** positive correlation between Eu/Eu*and Post-Archean Australian Shale indicates hydrothermal activity before the volcanic *** plane graph of the hydrocarbon-generating intensity(S1+S2)suggests that the heat released by volcanism promoted hydrocarbon ***,the nutrients carried by volcanic ash promoted biological blooms during Es_(4)^(1 )and Es_(3)^(3) deposition,yielding a high primary *** blooms consume large amounts of oxygen and form anoxic environments conducive to the burial and preservation of ***,this study helps to further understand the organic-inorganic interactions caused by typical geological events and provides a guide for the next step of shale oil exploration and development in other lacustrine basins in China.

关键词： Volcanic ash Hydrocarbon generation Organic-rich shale Shahejie Formation Jiyang Depression

Differences in the population of genetics of Mycobacterium tuberculosis between urban migrants and local residents in Beijing, China

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Chinese Medical Journal 2013年第21期126卷 4066-4071页

作者： Dai Guang-ming Zhang Zhi-guo Ding Peng-ju Zhang Qian Wang Li Wang Li-xia van Soolingen, Dick huang hai-rong Li Wei-min Li Chuan-you Beijing TB & Thorac Tumor Res Inst Natl TB Clin Lab China Beijing 101149 Peoples R China Changping TB Prevent & Control Inst Beijing Beijing 102206 Peoples R China Henan Univ Technol Coll Bioengn Zhengzhou 450001 Henan Peoples R China Chinese Acad Sci Inst Genet & Dev Biol Beijing 100101 Peoples R China Hangzhou Normal Univ Sch Med Hangzhou 3110036 Zhejiang Peoples R China Chinese Ctr Dis Control & Prevent Natl Ctr TB Control & Prevent Beijing 102206 Peoples R China Natl Inst Publ Hlth & Environm RIVM Natl Mycobacteria Reference Lab NL-3720 BA Bilthoven Netherlands Capital Med Univ Beijing Chest Hosp Beijing Key Lab Drug Rresistant TB Res Beijing 101149 Peoples R China TB & Thorac Tumor Res Inst Dept Bacteriol & Immunol Beijing 101149 Peoples R China

Background Currently, migration has become one of the risk factors of high burden of tuberculosis in China. This study was to explore the influence of mass migration on the dynamics of Mycobacterium （M.） tuberculosi... 详细信息

关键词： Beijing lineage Mycobacterium tuberculosis urban migrants phylogeny population of genetics

Spatial construction of ultrasmall Pt-decorated 3D spinel oxidemodified N-doped graphene nanoarchitectures as high-efficiency methanol oxidation electrocatalysts

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Rare Metals 2024年第1期43卷 186-197页

作者： Qi Zhang Min-Min Yan Wen-Fa Du Chen-Yu Yin Jian Zhang Lu Yang Yun-Qing Kang hai-Yan He Hua-Jie huang College of Mechanics and Materials Hohai UniversityNanjing 210098China New Energy Technology Engineering Lab of Jiangsu Province College of ScienceNanjing University of Posts&Telecommunications(NUPT)Nanjing 210023China International Center for Materials Nanoarchitectonics(WPIMANA) National Institute for Materials ScienceTsukuba 305-0044IbarakiJapan

Direct methanol fuel cell technology recently becomes the focus of both academic and engineering circles,which stimulates the exploitation and utilization of advanced electrode catalysts with high activity and long ***,we demonstrate a robust bottom-up approach to the spatial construction of three-dimensional(3D) spinel manganese-cobalt oxide-modified N-doped graphene nanoarchitectures decorated with ultrasmall Pt nanoparticles(Pt/MnCo_(2)O_(4)-NG) via a controllable selfassembly *** incorporation of MnCo_(2)O_(4)nanocrystals provides abundant hydroxyl sources to promote the oxidative removal of CO-like byproducts on Pt sites,while the existence of 3D porous N-doped graphene networks facilitates the transportation of both ions and electrons in the hybrid system,thus giving rise to remarkable synergetic coupling effects during the methanol oxidation ***,the optimized Pt/MnCo_(2)O_(4)-NG nano architecture expres ses exceptional electrocatalytic properties with a large electrochemically active surface area of 99.5 m^(2)·g^(-1),a high mass activity of1508.3 mA·mg^(-1),strong toxicity resistance and reliable long-term durability,which have obvious competitive advantages over those of conventional Pt/carbon black,Pt/carbon nano tube,Pt/graphene,and Pt/N-doped graphene catalysts with the same Pt usage.

关键词： Platinum MnCo_(2)O_(4) 3D graphene Electrocatalysts Methanol oxidation

Dark Matter Search in Dwarf Irregular Galaxies with Ten Years of Data from the Ice Cube Neutrino Observatory

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Research in Astronomy and Astrophysics 2024年第3期24卷 75-82页

作者： Yi-Fei Lü Ben-Yang Zhu rong-Lan Li Xue-Kang Guo Tian-Ci Liu Yong-Bo huang Yun-Feng Liang Guangxi Key Laboratory for Relativistic AstrophysicsSchool of Physical Science and TechnologyGuangxi University Nanning 530004China

Dwarf irregular galaxies(dIrrs),as rotationally supported systems,have more reliable J-factor measurements than dwarf spheroidal galaxies and have received attention as targets for dark matter detection in recent *** this paper,we use 10 yr of IceCube muon-track data and an unbinned maximum-likelihood-ratio method to search for neutrino signals beyond the background from the directions of seven dIrrs,aiming to detect neutrinos produced by heavy annihilation dark *** do not detect any significant *** on such null results,we calculate the upper limits on the velocity-averaged annihilation cross section for 1 TeV–10 PeV dark *** limits,although weaker than the strictest constraints in the literature in this mass range,are also a good complement to the existing results considering the more reliable J-factor measurements of dIrrs.

关键词： (cosmology) dark matter-cosmology theory-galaxies dwarf

Boundedness of solutions and existence of invariant tori for generalized pendulum type equation

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Chinese Science Bulletin 1997年第20期42卷 1673-1675页

作者： huang hai and YUAN rong1. Institute of Mathematics, Chinese Academy of Sciences, Beijing 100080, China 2. Department of Mathematics, Beijing Normal University, Beijing 100875, China Institute of Mathematics Chinese Academy of Sciences Beijing China Department of Mathematics Beijing Normal University Beijing China

MOTIVATED by various significant applications to non-Newtonian fluid theory, diffusion offlows in porous media, nonlinear elasticity, and theory of capillary surfaces, several authors(see refs.[1,2] and references cited therein ) have recently studied the existence of periodicsolutions and other properties for the following differential equation:

关键词： boundeduess of solutions invariant tori quasiperlodic solutions Moser’s small twist theorem.

An Occupational Dimethylacetamide Poisoning Incident Responded Efficiently in Health Emergency Response Network—Zhuhai City,Guangdong Province,China,August 2023

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China CDC weekly 2024年第34期6卷 872-875页

作者： Jiaxin Jiang Jian huang Jintong He Chudong Zhang Weihui Liang Qifeng Wu Weifeng rong Xiaoyong Liu Guangdong Province Hospital for Occupational Disease Prevention and Treatment(GDHOD) Guangzhou CityGuangdong ProvinceChina The Third People’s Hospital of Zhuhai(Zhuhai Hospital for Occupational Disease Prevention and Treatment ZHHOD)Zhuhai CityGuangdong ProvinceChina

Summary What is already known about this topic?Dimethylacetamide(DMA),a colorless liquid with low toxicity,is commonly used as a solvent in the production of synthetic materials,petroleum processing,and pharmaceutical *** comparison to substances of higher toxicity,occupational exposure to DMA presents a deceptive risk due to its insidious and subacute progression,increasing the likelihood of escalating into major incidents.

关键词： Dimethyl Guangdong manufacture