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Excretion of manure-borne estrogens and androgens and their potential risk estimation in the Yangtze River Basin

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Journal of Environmental Sciences 2015年第11期27卷 110-117页

作者： Yanxia Li Shiying gao Shufang Liu Bei Liu Xuelian Zhang Min gao Linjie Cheng Boyang Hu State Key Laboratory of Water Environmental Simulation School of Environment Beijing Normal University Yellow River Institute of Hydraulic Research Yellow River Conservancy Commission

The Yangtze River is the longest river in China, and the river basin spans one fifth of the area of the whole country. Based on statistical data, the excretion of manure-borne steroid hormones, including steroid estrogens（SEs） and steroid androgens（SAs）, in 10 provinces of China within the region has been estimated. The potential environmental and ecological risk of manure-borne steroid estrogens to the surface water in this region was also assessed. The manure-borne SE and SA excretions in the 10 provinces and municipalities vary in the order： Sichuan 〉 Hunan 〉 Hubei 〉 yunnan 〉 Jiangsu 〉 Anhui 〉 Jiangxi 〉Chongqing 〉 Qinghai 〉 Shanghai. The highest increase of manure-borne SEs（1434.3 kg）and SAs（408.5 kg） was found in Hunan and Hubei provinces, respectively, and the total excretion in 2013 was 65% more than 15 years earlier in these two provinces. However, the emissions in Anhui and Shanghai decreased in this 15 year period of time. Swine urine,chicken feces, cattle urine, and laying hen feces were considered the dominant sources of manure-borne E1, βE2, αE2, and SAs, respectively. Although Jiangsu province did not have the largest excretion of manure-borne SEs, it had the highest level of predicted17β-estradiol equivalency（EEQs） value of 16.65 ng/L in surface water because of the limited surface water resources. According to the lowest observable effect level of 10 ng/L for17β-estradiol, the manure-borne SEs in Jiangsu province might potentially pose ecological risk to its wild aquatic organisms.

关键词： Manure-borne steroid hormones Animal manure Pollution risk assessment The Yangtze River basin

Genome-wide analysis of WRKY gene family in Arabidopsis lyrata and comparison with Arabidopsis thaliana and Populus trichocarpa

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Chinese Science Bulletin 2014年第8期59卷 754-765页

作者： Yu Song Jie gao Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical Garden Chinese Academy of Sciences Mengla Graduate School of the Chinese Academy of Sciences

WRKY transcription factors are important molecules in regulating plant development and ***,the sequenced Arabidopsis lyrata genome allows us to characterize the number and structure of WRKY genes in this species.A total of 71 AlWRKY factors were classified into the previously defined polyphyletic WRKY groups I to *** exon/intron structure and motif compositions of WRKYs were highly conserved in each group,but tended to be different between groups and *** WRKY family has a set of genes similar to that in ***,but in Populus trichocarpa this family has expanded significantly,except for the subgroup III *** duplication and gene conversion events have played important roles during the evolution of the WRKY gene family in the three ***,the gene expansion events differentiated in WRKY subgroups during the evolution,and we have detected positive selection in several sites of the group III *** addition,this subgroup was the most structurally diversified in the WRKY *** study demonstrated that the group III members of WRKY gene families in ***,***,and *** have experienced different selection pressure during the process of evolution and this may have played a vital role in plant adaptation.

关键词：基因家族 WRKY 基因组分析拟南芥植物生长发育和毛子结构转录因子

Recovery of scandium from silicate minerals by high-pressure leaching in sulfuric acid

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Journal of Rare Earths 2024年第7期42卷 1375-1384,I0007页

作者： Peng Yan Xiaoming Chen Likun gao Bo Yang Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming650093China Faculty of Land Resources Engineering Kunming University of Science and TechnologyKunming650093China School of Chemistry and Chemical Engineering Kunming UniversityKunming650214China

This study investigated the leaching of scandium from a Sc-bearing silicate *** Sc concentrate obtained by beneficiation pre-enrichment has 1.03×10^(−4) wt%Sc and 14.66 wt%*** main Sc-bearing minerals are limonite,chlorite,sericite,and hornblende,in the form of ***-pressure leaching(HPL)with sulfuric acid(98 wt%)and NaF was used to dispose this *** Sc leaching efficiency of 91.82%was obtained under the optimum conditions,which are pressure of 5.0×10^(5) Pa,A/O value of 1.1,L/S value of 1.8,NaF dosage of 2 wt%,at 130℃ for 6 *** X-ray diffraction(XRD)and scanning electron microscopy(SEM)results show that the residue is mainly quartz phase in the multihole *** with ordinary leaching for silicate,high-pressure leaching has significant advantages in saving acid and energy consumption.

关键词： Silicate minerals Scandium High-pressure Leaching Concentrated sulfuric acid Rare earths

Three New Cucurbitacins from Hemsleya lijiangensis

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Chinese Chemical Letters 2003年第4期14卷 389-392页

作者： Ming Hua CHIU Juan gao State Key Laboratory of Phytochemistry and Plant Resource in West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650204

Three new cucurbitacins were isolated from the BuOH extract of the rhizomes of Hemsleya lijiangensis. Their structures were elucidated as 23, 24 -dihydro cucurbitacin F-16, 25-diacetate(1), 23, 24-dihydro cucurbitacin F-16, 25-diacetate-2-O-β-D glucopyranoside (2), 23, 24-dihydro-cucurbitacin F-16-acetate(3), respectively; by spectral analyses.

关键词： Hemsleya lijiangensis Cucurbitaceae Hemslecins D, E, F.

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关于旅游空间格局与旅游区位的思考

思想战线 2001年第3期27卷 36-38页

作者：高卫国玉溪师范学院云南玉溪653100

旅游业的开发与规划 ,是建立在资源调查、评价、预测、可行性论证的基础上 ,在多学科理论指导下进行的重要工作 ,而在实践中 ,旅游的空间格局、区位优势、规模结构、地域结构、层次结构等方面仍然存在许多问题。

关键词：空间格局旅游区位地域结构分析探讨

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干细胞抗卵巢颗粒细胞衰老的作用机制及进展

中国组织工程研究 2025年第25期29卷 5414-5421页

作者：林美玉赵玺龙高景赵晶阮光萍解放军联勤保障部队第九二〇医院基础医学实验室云南省昆明市650032 干细胞与免疫细胞生物医药技术国家地方联合工程研究中心云南省昆明市650032 云南省细胞治疗技术转化医学重点实验室云南省昆明市650032

背景:干细胞疗法作为一种新兴的治疗手段,有望改善卵巢环境,延缓卵巢颗粒细胞的衰老,为高龄妊娠女性带来新的希望。目的:综述干细胞抗卵巢颗粒细胞衰老的机制及研究进展。方法:检索中国知网和PubMed数据库中关于干细胞抗卵巢颗粒细胞衰... 详细信息

背景:干细胞疗法作为一种新兴的治疗手段,有望改善卵巢环境,延缓卵巢颗粒细胞的衰老,为高龄妊娠女性带来新的希望。目的:综述干细胞抗卵巢颗粒细胞衰老的机制及研究进展。方法:检索中国知网和PubMed数据库中关于干细胞抗卵巢颗粒细胞衰老的文献,以“干细胞,卵巢颗粒细胞,衰老”为中文检索词,以“stem cells,ovary granulosa cells,aging”为英文检索词,最终纳入67篇文献进行分析。结果与结论:①总结了5种卵巢颗粒细胞衰老的机制:DNA损伤和修复能力下降、氧化应激、线粒体功能受损、炎症反应、激素水平变化;②整理了当前干细胞治疗卵巢颗粒细胞衰老的5种机制:促进增殖和抑制凋亡、分化潜能及再生能力、分泌因子、抗氧化、抗炎症反应和免疫调节;③目前有多种类型的干细胞可通过多种方式协同治疗卵巢颗粒细胞衰老,干细胞疗法在恢复女性生育能力方面具有广阔前景。

关键词：干细胞卵巢颗粒细胞衰老机制氧化应激抑制凋亡细胞因子抗氧化抗炎症反应

Speed Distributions of CMEs in Cycle 23 at Low and High Latitudes

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Chinese Journal of Astronomy and Astrophysics 2008年第2期8卷 146-152页

作者： Peng-Xin gao Ke-Jun Li National Astronomical Observatories / yunnan Observatory Chinese Academy of Sciences Kunming 650011 GraduateSchool of Chinese Academy of Sciences Beijing 100049

We analyzed the speed （v） distributions of 11584 coronal mass ejections （CMEs） observed by the Large Angle and Spectrometric Coronagraph Experiment on board the Solar and Heliospheric Observatory （SOHO/LASCO） in cycle 23 from 1996 to 2006. We find that the speed distributions for high-latitude （HL） and low-latitude （LL） CME events are nearly identical and to a good approximation they can be fitted with a lognormal distribution. This finding implies that statistically the same driving mechanism of a nonlinear nature is acting in both HL and LL CME events, and CMEs are intrinsically associated with the source＇s magnetic structure on large spatial scales. Statistically, the HL CMEs are slightly slower than the LL CMEs. For HL and LL CME events respectively, the speed distributions for accelerating and decelerating events are nearly identical and also to a good approximation they can be both fitted with a lognormal distribution, thus supplementing the results obtained by Yurchyshyn et al.

关键词： Sun activity -- Sun coronal mass ejections (CMEs)

Homocysteine Promotes Proliferation and Activation of Microglia

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Homocysteine Promotes Proliferation and Activation of Microg...

Floral characteristics and pollination ecology of Manglietia ventii(Magnoliaceae),a plant species with extremely small populations(PSESP)endemic to South yunnan of China

2008年全国生物化学与分子生物学学术大会

作者： Cheng-gang Zou Yue-shui Zhao Shun-yu gao Xiu-zhen Cao Ke-qin Zhang (Key Laboratory of Ministry of Education for Laboratory for Microbial Resources,yunnan University.Kunming,yunnan 650091,China)

Homocysteine is an intermediate in sulfur amino acid *** and experimental studies have correlated hyperhomocysteinemia to a range of neurodegenerative conditions,including Alzheimer’s disease, stroke,and Parkinson’s *** homocysteine-induced apoptosis in neurons has been extensively studied,little information is available regarding the effect of homocysteine on microglia,in this report,we

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Plant Diversity 2017年第1期39卷 52-59页

作者： Bin Wang gao Chen Congren Li Weibang Sun Kunming Botanical Garden Kunming Institute of BotanyChinese Academy of SciencesKunming 650204YunnanChina Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650204YunnanChina University of Chinese Academy of Sciences Beijing 100049China

Manglietia ventii is a highly endangered plant species endemic to yunnan province in China, where there are only five known small populations. Despite abundant flowering there is very low fruit and seed set,and very few seedlings in natural populations, indicating problems with reproduction. The causes of low fecundity in M. ventii are not known, largely because of insufficient knowledge of the species pollination ecology and breeding system. We conducted observations and pollination experiments, and analyzed floral scents to understand the pollinatoreplant interactions and the role of floral scent in this relationship, as well as the species breeding system. Like the majority of Magnoliaceae, M. ventii has protogynous and nocturnal flowers that emit a strong fragrance over two consecutive evenings. There is a closing period(the pre-staminate stage) during the process of anthesis of a flower, and we characterize the key flowering process as an "open-close-reopen" flowering rhythm with five distinct floral stages observed throughout the floral period of this species: pre-pistillate, pistillate, pre-staminate, staminate,and post-staminate. Flowers are in the pistillate stage during the first night of anthesis and enter the staminate stage the next night. During anthesis, floral scent emission occurs in the pistillate and staminate stages. The effective pollinators were weevils(Sitophilus sp.) and beetles(Anomala sp.), while the role of Rove beetles(Aleochara sp.) and thrips(Thrips sp.) in pollination of M. ventii appears to be minor or absent. The major chemical compounds of the floral scents were Limonene, b-Pinene, a-Pinene, 1,8-Cineole, Methyl-2-methylbutyrate, p-Cymene, Methyl-3-methyl-2-butenoate and 2-Methoxy-2-methyl-3-buten, and the relative proportions of these compounds varied between the pistillate and staminate stages. Production of these chemicals coincided with flower visitation by weevils and *** results of pollination experiments suggest that M

关键词： Floral scent Weevil Beetle Pollination Breeding system Conservation