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One chloro-furoeremophilanoid and two new natural dimers from Ligularia atroviolacea

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Chinese Chemical Letters 2008年第11期19卷 1319-1322页

作者： Jun zhao Hao Wu Ke Xin Huang Shu yun Shi Hua Peng Xian Feng Sun Liu rong Chen Qun Xiong Zheng Qi Jun zhang Xiao Jiang Hao Joachim Stockigt Xiao Kun Li yu zhao Jia Qu Department of Traditional Chinese Medicine and Natural Drug Research College of Pharmaceutical Sciences Zhejiang University Hangzhou 310058 China Key Laboratory of Southern Zhejiang TCM R＆D Pharmacy School of Wenzhou Medical College Wenzhou 325035 China School of Chemical Engineering Central South University Changsha 410083 China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650204 China

Three new compounds, including one chloro-furoeremophilanoid （1）, one eremophiladiolide （2）, a rare dimer of nor- furoeremophilanoid, ligulatrovine A （3）, and a known furoeremophilanolide （4）, were isolated from Ligularia atroviolacea. The structures of compounds 1-4 were elucidated by spectroscopic methods including 1D and 2D NMR experiments as well as X- ray diffraction study.

关键词： Natural scsquilcrpene Eremophiladiolidc Dimcr Chloro-furanocrcmophilanc X-ray Ligularia atroviolacea

Convergence in Distribution for Uncertain Random Sequences with Dependent Random Variables

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Journal of Systems Science & Complexity 2021年第2期34卷 483-501页

作者： GAO rong AHMADZADE Hamed School of Economics and Management Hebei University of TechnologyTianjin 300401China Department of Mathematical Sciences University of Sistan and BaluchestanZahedanIran

Random variables and uncertain variables are respectively used to model randomness and uncertainty. While randomness and uncertainty always coexist in a same complex system. As an evolution of random variables and uncertain variables, uncertain random variable is introduced as a tool to deal with complex phenomena including randomness and uncertainty simultaneously. For uncertain random variables, a basic and important topic is to discuss the convergence of its ***, this paper focuses on studying the convergence in distribution for a sequence of uncertain random sequences with different chance distributions where random variables are not *** the result of this paper is a generalization of the existing literature. Relations among convergence theorems are studied. Furthermore, the theorems are explained by several examples.

关键词： Chance distribution convergence in distribution convergence in mean uncertain random variable

Diagnostic value of preoperative examination for evaluating margin status in breast cancer

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World Journal of Clinical Cases 2023年第20期11卷 4852-4864页

作者： Peng Liu Ye zhao Dong-Dong rong Kai-Fu Li Ya-Jun Wang Jing zhao Hua Kang Department of General Surgery Center for Thyroid and Breast SurgeryXuanwu HospitalCapital Medical UniversityBeijing 100053China Department of General Surgery Beijing Fengtai HospitalBeijing 100071China Department of Radiology Xuanwu HospitalCapital Medical UniversityBeijing 100053China

BACKGROUND A positive resection margin is a major risk factor for local breast cancer recurrence after breast-conserving surgery(BCS).Preoperative imaging examinations are frequently employed to assess the surgical *** To investigate the role and value of preoperative imaging examinations[magnetic resonance imaging(MRI),molybdenum target,and ultrasound]in evaluating margins for *** A retrospective study was conducted on 323 breast cancer patients who met the criteria for BCS and consented to the procedure from January 2014 to July *** study gathered preoperative imaging data(MRI,ultrasound,and molybdenum target examination)and intraoperative and postoperative pathological *** on their BCS outcomes,patients were categorized into positive and negative margin ***,the patients were randomly split into a training set(226 patients,approximately 70%)and a validation set(97 patients,approximately 30%).The imaging and pathological information was analyzed and summarized using R ***-conditional logistic regression and LASSO regression were conducted in the validation set to identify factors that might influence the failure of BCS.A column chart was generated and applied to the validation set to examine the relationship between pathological margin range and *** study aims to identify the risk factors associated with failure in *** The multivariate non-conditional logistic regression analysis demonstrated that various factors raise the risk of positive margins following *** factors comprise non-mass enhancement(NME)on dynamic contrastenhanced MRI,multiple focal vascular signs around the lesion on MRI,tumor size exceeding 2 cm,type III timesignal intensity curve,indistinct margins on molybdenum target examination,unclear margins on ultrasound examination,and estrogen receptor(ER)positivity in *** regression was additionally employed in this study to identify four predictive

关键词： Breast cancer Breast-conserving surgery Imaging features Positive surgical margin Regression analysis model

Genetic Diversity of Maize Populations Developed by Two Kinds of Recurrent Selection Methods Investigated with SSR Markers

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Agricultural Sciences in China 2008年第9期7卷 1037-1045页

作者： LI Lu-jiang YANG Ke-cheng PAN Guang-tang rong Ting-zhao Maize Research Institute Sichuan Agricultural University~Key Laboratory of Crop Genetic Resources and Improvement Ministry of Education Ya＇ an 625014 P.R.China

Two cycles of biparental mass selection （MS） and one cycle of half-sib-S3 family combining selection （HS-S3） for yield were carried out in 2 synthetic maize populations P4C0 and P5C0 synchronously. The genetic diversity of 8 maize populations, including both the basic populations and their developed populations, were evaluated by 30 SSR primers. On the 30 SSR loci, a total of 184 alleles had been detected in these populations. At each locus, the number of alleles varied from 2 to 14, with an average of 6.13. The number and ratio of polymorphic loci in both the basic populations were higher than those of their developed populations, respectively. There was nearly no difference after MS but decreased after HS-S3 in both the basic populations in the mean gene heterozygosity. The mean genetic distance changed slightly after MS but decreased in a bigger degree after HS-S3 in both the basic populations. Analyses on the distribution of genetic distances showed that the ranges of the genetic distance were wider after MS and most of the genetic distances in populations developed by HS-S3 were smaller than those in both the basic populations. The number of genotypes increased after MS but decreased after HS-S3 in both the basic populations. The genetic diversity of intra-population was much more than genetic diversity of inter-population in both the basic populations. All these indexes demonstrated that the genetic diversity of populations after MS was similar to their basic populations, and the genetic diversity was maintained during MS, whereas the genetic diversity of populations decreased after HS-S3. This result indicated that heterogeneity between some of the individuals in the developed populations increased after MS, whereas the populations become more homozygotic after HS-S3.

关键词： maize recurrent selection genetic diversity SSR markers biparental mass selection (MS) half-sib-S3 familycombining selection (HS-S3)

“JavaScript程序设计”课堂革命的教学改革与实践

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广东农工商职业技术学院学报 2024年第2期40卷 65-68,86页

作者：何丽李蓉广东农工商职业技术学院广东广州510507

以软件技术专业核心课程“JavaScript程序设计”为例,将新技术、新工艺、新规范融入教学内容。结合人才培养方案,从教学组织结构、教学内容、教学实施过程、教学评价四个方面探索有效的课堂革命路径,将专业讲授、现实关注和价值引领三... 详细信息

以软件技术专业核心课程“JavaScript程序设计”为例,将新技术、新工艺、新规范融入教学内容。结合人才培养方案,从教学组织结构、教学内容、教学实施过程、教学评价四个方面探索有效的课堂革命路径,将专业讲授、现实关注和价值引领三者有机融合,形成教师主导、学生主体、能力为本的新型课堂生态,最终达到突显职业能力、创新能力、工匠精神等育人目标。

关键词：课堂革命教学组织结构教学内容教学实施教学评价

Study of coexisting upstream solitary wave packet and downstream wakes induced by Diaoyu Dao and its affiliated islands detected by satellite sun glitter

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Acta Oceanologica Sinica 2023年第4期42卷 1-15页

作者： Lina Cai Xiaoqi Jiang Xiaojun Yan Yan Bai Jianqiang Liu Menghan yu rong Tang Jingjing Jiang Marine Science and Technology College Zhejiang Ocean UniversityZhoushan 316004China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Key Laboratory of Space Ocean Remote Sensing and Application of Ministry of Natural Resources National Satellite Ocean Application ServiceBeijing 100081China

Taking the advantage of sun glitter(SG)observed from high-resolution satellites Gaofen-1(GF-1)and Gaofen-6(GF-6),a new method named Shield and Vortex 1-2(SAV1-2)for extracting spatial texture information from sun glitter was *** surface texture detail information around Diaoyu Dao and its affiliated islands was extracted using ***,the dynamic characteristics of the water environment were analyzed by combining the water color,temperature and dynamic *** results show the following information.(1)Stable westward shield effect and eastward Karman vortex streets,extracted from SG,appear upstream(westward)and downstream(eastward)of the Diaoyu Dao and its affiliated islands respectively.(2)The dominant direction of the Kuroshio Current in the Diaoyu Dao and its affiliated islands area is east,the Diaoyu Dao and its affiliated islands interacting with Kuroshio,inducing western shield and eastern shelter and ***,wave intervals of the shield in front of the island range from hundreds to thousands of metres,and extend wider than the island itself.(3)Combining with high-resolution sea surface temperature(SST)and chlorophyll a(Chl a)concentration,the directional changes of water color elements are mutually supported and proved with the stable shield(wave packet)effect in the west and vortex street effect in the *** change of SST upstream of the island(western shield area)is not significant,the temperature in the downstream shelter area decreases slightly,and the SST in the downstream wake area shows a general trend of obvious *** wake area is dominated by Karman vortex streets in shape,supplementing by *** concentration of Chl a in the west shield of island is as low as that in downstream shelter area,while it increases significantly in the downstream wake area with shape in eddy or ribbon.(4)The SAV methods of extracting sea surface texture detail using SG can be widely used in different sea areas and water quali

关键词： sun glitter westward shield Diaoyu Dao and its affiliated islands GF-1/6

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印尼垃圾发电入炉垃圾设计点热值确定探究

电力设备管理 2024年第8期 249-252页

作者：荣坤鹏中国电力工程有限公司

垃圾发电的燃料热值存在多种影响因素,变化范围也比较大。入炉垃圾设计点热值的确定,关系到整个焚烧厂寿命期间的运行效率与运行成本。设计点不合理,可能会导致炉温过高、炉膛结焦、锅炉受热面寿命降低等问题。本论文重点研究印尼某市... 详细信息

垃圾发电的燃料热值存在多种影响因素,变化范围也比较大。入炉垃圾设计点热值的确定,关系到整个焚烧厂寿命期间的运行效率与运行成本。设计点不合理,可能会导致炉温过高、炉膛结焦、锅炉受热面寿命降低等问题。本论文重点研究印尼某市的垃圾成分,分析了垃圾渗沥液规模与入炉垃圾热值之间的关系,以确定合适的设计点垃圾热值。

关键词：印尼垃圾发电厂设计点热值

Corrosion resistance of an amino acid-bioinspired calcium phosphate coating on magnesium alloy AZ31

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Journal of Materials Science & Technology 2020年第14期47卷 224-235页

作者： Xiao-Li Fan Chang-Yang Li yu-Bo Wang yuan-Fang Huo Shuo-Qi Li rong-Chang Zeng Corrosion Laboratory for Light Metals College of Materials Science and EngineeringShandong University of Science and TechnologyQingdao 266590China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China

An L-cysteine-bioinspired calcium phosphate(Ca-P)coating is prepared upon magnesium alloy AZ31 in a water bath at 60℃.FE–SEM,FTIR,XRD,electrochemical characterization,hydrogen evolution tests and XPS were used to evaluate the microstructure,chemistry and corrosion performance of the *** indicate that L-cysteine promotes the nucleation process of the coating and significantly increases its *** can be attributed to the complexation of the carboxyl group and mercapto group of L-cysteine with calcium ***,the obtained Ca-P coating possesses higher corrosion resistance than that prepared in L-cysteine-free bath.

关键词： Magnesium alloys Phosphate Coating Corrosion resistance Amino acid

二陈汤合三子养亲汤治疗痰浊阻肺型急性加重期慢性阻塞性肺疾病临床观察

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中国中医药现代远程教育 2024年第11期22卷 47-49页

作者：黄容易薇宜春市中医院呼吸内科江西宜春336000

目的探究二陈汤合三子养亲汤治疗痰浊阻肺型急性加重期慢性阻塞性肺疾病(AECOPD)的临床效果。方法按随机数字表法将2021年6月—2022年6月宜春市中医院收治的62例痰浊阻肺型AECOPD患者分为两组,各31例。对照组采用西药治疗,研究组在对照... 详细信息

目的探究二陈汤合三子养亲汤治疗痰浊阻肺型急性加重期慢性阻塞性肺疾病(AECOPD)的临床效果。方法按随机数字表法将2021年6月—2022年6月宜春市中医院收治的62例痰浊阻肺型AECOPD患者分为两组,各31例。对照组采用西药治疗,研究组在对照组的基础上予以二陈汤合三子养亲汤治疗,均连续治疗2周。对比两组临床疗效、炎性因子水平[C反应蛋白(CRP)、白细胞水平(WBC)]、疾病严重程度评分及不良反应。结果研究组的治疗总有效率为93.55%(29/31),高于对照组的74.19%(23/31)(P0.05)。结论AECOPD患者应用二陈汤合三子养亲汤治疗,可获得较好的临床效果,能够有效缓解病情、抑制炎性反应,且不良反应少,安全可靠,值得推广。

关键词：肺胀急性加重期慢性阻塞性肺疾病痰浊阻肺证二陈汤三子养亲汤中西结合疗法