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Facile Synthesis and Catalytic Properties of β-Co(OH)_2 and Mg(OH)_2 Nanoplates

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Chemical Research in Chinese Universities 2007年第5期23卷 508-510页

作者： SUN Ling-na WANG Ke-li luo Sheng-jun GUO Qing-rong HU Chang-wen institute for Chemical Physics Department of Chemistry State Key Laboratory of Explosion Science and Technology Beijin Institute of Technology Belting 100081 P. R. China Biological Engineering Department Jilin Vocational Technology College in Agriculture Engineering Gongzhuling 136100 P. R. China

β-Co（OH）2 and Mg（OH）2 nanoplates were synthesized via a facile template-free hydrothermal *** different conditions of preparation and catalytic properties of the products were studied and *** products were characterized by X-ray diffraction,transmission electron microscopy,scanning electron microscopy,selected area electron diffraction（SAED）,and gas chromatograph.

关键词： Nanoplate Catalytic property β-Co (OH) 2 Mg(OH) 2

抚仙湖垂向分层期间水体细菌群落结构组成及多样性的空间分布

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湖泊科学 2022年第5期34卷 1642-1655页

作者：周天旭罗文磊笪俊吴琼余春艳李化炳南京信息工程大学南京210044 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室南京210008 中国科学院抚仙湖高原深水湖泊研究站玉溪652500 安徽师范大学生态与环境学院芜湖241002 河北大学生命科学学院保定071002

水体垂向分层是深水湖泊一个重要的特征,这不仅影响水体理化环境因子,而且影响水生生物组成的垂向分布,但是对不同水层水体细菌的多样性和群落结构组成的形成与维持机制知之甚少.本研究以抚仙湖为研究对象,在水体热力分层期间采集不同... 详细信息

水体垂向分层是深水湖泊一个重要的特征,这不仅影响水体理化环境因子,而且影响水生生物组成的垂向分布,但是对不同水层水体细菌的多样性和群落结构组成的形成与维持机制知之甚少.本研究以抚仙湖为研究对象,在水体热力分层期间采集不同位点、不同水层水样,借助16S rDNA Illumina Miseq高通量测序技术,探究水体细菌多样性和群落结构组成的空间分布特征及关键影响因子.研究结果表明:(1)抚仙湖北部湖心在水深15~40 m处出现温跃层,温度由23℃降至15℃,其余理化环境因子也存在明显的垂向分层现象;与垂向差异相比,表层水体各理化因子在水平方向上的差异相对较小.(2)在水平方向上,南部湖心表层水体细菌alpha多样性(Operational Taxonomic Unit数目和Faith’s phylogenetic diversity)最高;在垂向上,水体细菌alpha多样性随着采样水深的增加呈现单峰分布,在30和40 m水层最高;水体细菌alpha和beta多样性的垂向差异均显著大于水平方向差异.(3)表层水体细菌主要由Actinomycetales、unidentified Cyanobacteria、Burkholderiales和Sphingobacteriales组成;温跃层中以Pseudomonadales为主;均温层的优势菌群为unidentified Chloroflexi、Actinomycetales和Burkholderiales.典范对应分析表明溶解性有机碳、溶解氧、硝态氮、氨氮和总磷浓度是影响细菌群落组成的主要环境因子.

关键词：抚仙湖微生物群落组成多样性热分层空间分布

A pairwise radiomics algorithm–lesion pair relation estimation model for distinguishing multiple primary lung cancer from intrapulmonary metastasis

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Precision Clinical Medicine 2023年第4期6卷 239-247页

作者： Ting-Fei Chen Lei Yang Hai-Bin Chen Zhi-Guo Zhou Zhen-Tian Wu Hong-He luo qiong Li Ying Zhu Department of Thoracic Surgery The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510000China Breax laboratory PCAB Research Center of Breath and MetabolismBeijing 100017China Reliable Intelligence and Medical Innovation laboratory(RIMI Lab) Department of Biostatistics&Data ScienceUniversity of Kansas Medical Centerand University of Kansas Cancer CenterKansas CityKS 66160USA Center for Information technology&Statistics Statistics SectionThe First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510000China Department of Radiology Sun Yat-sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineGuangzhou 510000China Department of Radiology The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510000China

Background:Distinguishing multiple primary lung cancer(MPLC)from intrapulmonary metastasis(IPM)is critical for their disparate treatment strategy and *** study aimed to establish a non-invasive model to make the differentiation ***:We retrospectively studied 168 patients with multiple lung cancers(307 pairs of lesions)including 118 cases for modeling and internal validation,and 50 cases for independent external *** features on computed tomography(CT)were extracted to calculate the absolute deviation of paired *** were then selected by correlation coefficients and random forest classifier 5-fold cross-validation,based on which the lesion pair relation estimation(PRE)model was developed.A major voting strategy was used to decide diagnosis for cases with multiple pairs of *** from another institute were included as the external validation set for the PRE model to compete with two experienced ***:Seven radiomic features were selected for the PRE model *** major voting strategy,the mean area under receiver operating characteristic curve(AUC),accuracy,sensitivity,and specificity of the training versus internal validation versus external validation cohort to distinguish MPLC were 0.983 versus 0.844 versus 0.793,0.942 versus 0.846 versus 0.760,0.905 versus 0.728 versus 0.727,and 0.962 versus 0.910 versus 0.769,*** of the two clinicians were 0.619 and ***:The CT radiomic feature-based lesion PRE model is potentially an accurate diagnostic tool for the differentiation of MPLC and IPM,which could help with clinical decision making.

关键词： multiple primary lung cancer radiomics intrapulmonary metastasis

Ultrafast Coulomb explosion imaging of molecules and molecular clusters

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Chinese Physics B 2022年第10期31卷 8-22页

作者： Xiaokai Li Xitao Yu Pan Ma Xinning Zhao Chuncheng Wang Sizuo luo Dajun Ding institute of Atomic and Molecular Physics Jilin UniversityChangchun 130012China

Taking an image of their structure and a movie of their dynamics of small quantum systems have always been a dream of physicists and chemists. Laser-induced Coulomb explosion imaging(CEI) provides a great opportunity to make this dream a reality for small molecules or their aggregation — clusters. The method is unique for identifying the atomic locations with angstrom spatial resolution and capturing the structural evolution with a femtosecond time scale, in particular for imaging transient state products. This review summarizes the determination of three-dimensional equilibrium geometry of molecules and molecular cluster system through the reconstruction from the fragments momenta, and also shows that the dissociation dynamics on the complex potential energy surface can be tracked in real-time with the ultrafast CEI(UCEI).Furthermore, the detailed measurement and analysis procedures of the CEI, theoretical methods, exemplary results, and future perspectives of the technique are described.

关键词： Coulomb explosion imaging molecular structure molecular cluster ultrafast dissociation dynamics

Cytotoxic ent-Kaurane Diterpenoids from Salvia cavaleriei

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Cytotoxic ent-Kaurane Diterpenoids from Salvia cavaleriei

Synthesis and characterization of a novel high thermally stable energy compound:1-(1-Adamantylamino)-2,4,6-trinitrobenzene

第十四届全国中药和天然药物学术研讨会

作者： Heng Zheng qiong Chen Mengke Zhang Yongji Lai Liang Lei Penghua Shu Jinwen Zhang Yongbo Xue Zengwei luo Yan Li Guangmin Yao Yonghui Zhang Hubei key laboratory of Natural Medicinal Chemistry and Resource Evaluation School of PharmacyTongji Medical CollegeHuazhong University of Science and Technology Tongji Hospital Affiliated to Tongji Medical College Huazhong University of Science and Technology state key laboratory of Phytochemistry and Plant Resources in West china Kunming Institute of BotanyChinese Academy of Sciences

＜正＞Salvia cavaleriei Levl is endemic to china and the whole plant of *** is used as a Chinese herbal medicine to treat hematemesis,metrorrhagia,dysentery with bloody stools,and traumatic *** phytochemical investiga...

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Chinese Chemical Letters 2008年第10期19卷 1147-1150页

作者： Sheng Jun luo Wan Long Pan Ying Nan Chi Yan Qing Xu Kun Lin Huang Chang Wen Hu The institute for Chemical Physics and Department of Chemistry Beijing Institute of Technology Beijing 100081 China state key laboratory of explosion science and technology Beijing Institute of Technology Beijing 100081 China

1-（1-Adamantylamino）-2,4,6-trinitrobenzene （1） as a potential energy material has been synthesized in excellent yield and characterized by FT-IR, 1H NMR and single crystallographic methods, and is thermally stable... 详细信息

关键词： Admantanamine Tfinitrobenzene Pyrolysis Thermally stable

The middle Cambrian Linyi Lagerst?tte from the North china Craton: a new window on Cambrian evolutionary fauna

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National science Review 2022年第7期9卷 152-161页

作者： Zhixin Sun Fangchen Zhao Han Zeng Cui luo Heyo Van Iten Maoyan Zhu state key laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontologyand Center for Excellence in Life and PalaeoenvironmentChinese Academy of Sciences College of Earth and Planetary sciences University of Chinese Academy of Sciences Department of Geology Hanover College Department of Invertebrate Paleontology Cincinnati Museum Center

The rapid appearance of major animal groups and complex marine communities during the Cambrian explosion is recorded in large part in Burgess Shale-type ***,the restricted temporal and spatial distribution of known lagerstatten continues to hinder the formation of a comprehensive perspective on Cambrian evolutionary *** we describe the Linyi Lagerstatte(ca.504 mya),a new Cambrian Miaolingian lagerstatte from the Zhangxia Formation in Shandong Province,North *** Linyi Lagerstatte contains a variety of well-preserved soft-bodied fossils,among which the non-trilobite arthropods,particularly the mollisoniids and radiodonts,are the most important *** new assemblage is remarkable for its excellent preservation of arthropod limbs,eyes and guts,as well as for its close similarity in taxonomic composition to Laurentian *** distinctive Linyi Lagerstatte holds great promise for providing additional insights into the morphological disparity,community structure and paleogeographic range of marine faunas during the middle Cambrian(Miaolingian).

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电感耦合等离子体质谱-X射线衍射法研究云南玉溪和美国内华达地区黏土型锂资源矿物学特征

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岩矿测试 2021年第4期40卷 532-541页

作者：朱丽杨永琼顾汉念温汉捷杜胜江罗重光贵州师范大学地理与环境科学学院贵州贵阳550025 中国科学院地球化学研究所地球内部物质高温高压院重点实验室贵州贵阳550081 中国科学院地球化学研究所矿床地球化学国家重点实验室贵州贵阳550081 中国科学院大学地球与行星科学学院北京100049 东华理工大学核资源与环境国家重点实验室江西南昌330013

中国云南玉溪和美国内华达均已发现大量黏土型锂资源,目前关于两地区样品矿物学特征的研究相对不足,而对黏土型锂资源进行充分的矿物学特征研究是锂提取工作开展的重要前提。本文采用X射线荧光光谱、电感耦合等离子体质谱、X射线粉晶衍... 详细信息

中国云南玉溪和美国内华达均已发现大量黏土型锂资源,目前关于两地区样品矿物学特征的研究相对不足,而对黏土型锂资源进行充分的矿物学特征研究是锂提取工作开展的重要前提。本文采用X射线荧光光谱、电感耦合等离子体质谱、X射线粉晶衍射、扫描电镜等分析技术,从化学组成、矿物组成、微观形貌等角度对云南玉溪的两个黏土型锂资源样品(YM-1和YM-2)和美国内华达的两个黏土型锂资源样品(Ame-1和Ame-2)进行对比分析。结果表明:玉溪地区和内华达地区样品的锂含量均高于1000μg/g,具有一定的开发利用价值,但这两个地区的黏土型锂资源样品在主要化学成分、矿物组成、微观形貌和锂赋存状态四个方面均存在较大差异。具体来说,(1)主要化学成分差异:玉溪地区样品的主要化学成分为SiO2和Al2O3(硅、铝氧化物总量超过80%),而内华达地区样品的主要化学成分为SiO2(60.39%)或CaO(42.30%)。(2)矿物组成差异:玉溪地区样品的主要矿物为高岭石和蒙脱石,而内华达地区样品的主要矿物为石英、绿脱石、斯皂石或方解石。(3)微观形貌差异:玉溪地区样品是由表面平坦、边缘圆滑且大小相对均一的片层状结构堆叠而成,而内华达地区样品主要表现为大小不一的块状矿物聚集体。(4)锂赋存状态差异:玉溪地区样品中的锂主要赋存于蒙脱石中,而内华达地区样品中的锂主要赋存于蒙皂石族矿物中。本研究结果基本明确了云南玉溪地区和美国内华达地区黏土型锂资源的矿物学特征,可为这两个地区黏土型锂资源后期的开发利用提供科学依据。

关键词：黏土型锂资源矿物学特征 X射线荧光光谱法电感耦合等离子体质谱法 X射线粉晶衍射法

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石菖蒲根茎化学成分及抗炎活性研究

中草药 2022年第15期53卷 4617-4624页

作者：邱路雅杨刚金琼罗晓东刘亚平王易芬云南中医药大学中药学院云南昆明650500 中国科学院昆明动物物研究所云南昆明650201 昆明理工大学食品科学与工程学院云南昆明650500 中国科学院昆明植物研究所植物化学与西部植物资源持续利用国家重点实验室云南昆明650201

目的对石菖蒲Acorus tatarinowii干燥根茎的化学成分及其抗炎活性进行研究。方法采用硅胶、YMC、Sephadex LH-20等多种柱色谱填料进行分离纯化,根据理化性质结合波谱数据鉴定化合物结构。通过检测脂多糖(lipopolysaccharide,LPS)诱导... 详细信息

目的对石菖蒲Acorus tatarinowii干燥根茎的化学成分及其抗炎活性进行研究。方法采用硅胶、YMC、Sephadex LH-20等多种柱色谱填料进行分离纯化,根据理化性质结合波谱数据鉴定化合物结构。通过检测脂多糖(lipopolysaccharide,LPS)诱导的RAW 264.7巨噬细胞中白细胞介素6(interleukin 6,IL-6)、IL-1β、肿瘤坏死因子α(tumor necrosis factor-α,TNF-α)炎症因子的表达和一氧化氮(NO)的抑制能力,来评估所分离化合物的抗炎作用。结果从石菖蒲中分离得到18个单体化合物,包括9个苯丙素类、4个酚类、2个木脂素类、1个倍半萜、1个甾体及1个其他类型化合物,分别鉴定为原儿茶醛(1)、3,5-二甲氧基-4-羟基苯丙酮(2)、4-(乙氧基甲基)苯酚(3)、(2E)-3-(4-羟基-3-甲氧基苯基)-2-丙烯酸戊酯(4)、反式-阿魏酸二十二烷基酯(5)、反式-阿魏酸二十烷基酯(6)、4-羟基-3-甲氧基肉桂酸乙酯(7)、3-(2-甲氧基乙基)苯酚(8)、反式松柏醛(9)、对甲氧基苯酚(10)、β-细辛醚(11)、α-细辛醚(12)、2-乙酰基-菖蒲烯酮(13)、对羟基苯甲酸(14)、5,8,11,14,17-二十碳五烯酸(15)、(-)-丁香树脂(16)、(-)-松脂醇(17)、胡萝卜苷(18)。结论化合物2~9均为首次从该属植物中分离获得。此外,单体化合物的抗炎活性与阳性对照组地塞米松比较,化合物1~4、6~12、14~16在20μg/mL质量浓度下能显著降低LPS诱导的RAW 264.7巨噬细胞中IL-6、IL-1β、TNF-α炎性细胞因子分泌和NO的释放,具有较好的体外抗炎作用。

关键词：石菖蒲抗炎活性炎症因子 3 5-二甲氧基-4-羟基苯丙酮 4-(乙氧基甲基)苯酚反式松柏醛