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Low Mantle Perovskite:Solid Solution, Spin State of Iron and Water Solubility

Acta Geologica Sinica(English Edition) 2014年第6期88卷 1884-1894页

作者： li lin li Qing li sheng-rong State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing Institute of Science Research China University of Geosciences Beijing School of Earth Sciences and Resources China University of Geosciences School of Earth Sciences and Resources China University of Geosciences Beijing

Silicate perovskites（（Mg, Fe）SiO 3 and CaS iO 3） are believed to be the major constituent minerals in the lower mantle. The phase relation, solid solution, spin state of iron and water solubility related to the lower mantle perovskite are of great effect on the geodynamics of the Earth＇s interior and on ore mineralization. Previous studies indicate that a large amount of iron coupled with aluminum can incorporate into magnesium perovskite, but this is discordant with the disproportionation of（Mg,Fe）SiO 3 perovskite into iron-free MgS i O3 perovskite and hexagonal phase（Mg0.6Fe0.4）SiO 3 in the Earth＇s lower mantle. MnS iO 3 is the first chemical component confirmed to form wide range solid solution with Ca SiO 3 perovskite and complete solid solution with MgS i O3 perovskite at the P-T conditions in the lower mantle, and addition of Mn Si O3 will strongly affects the mutual solubility between Mg Si O3 and CaS iO 3. The spin state of iron is deeply depends on the site occupation of the Fe3＋or Fe2＋, the synthesis and the annealing conditions of the sample. It seems that the spin state of Fe2＋ in the lower mantle perovskite can be settled as high spin, however, the existence of intermediate spin or low spin state of Fe2＋ in perovskite has not been clarified. Moreover, different results have also been reported for the spin state of Fe3＋ in perovskite. The water solubility of the lower mantle perovskite is related with its composition. In pure Mg SiO 3 perovskite, only less than 500 ppm water was reported. Al–Mg Si O3 perovskite or Al–Fe–MgS iO 3 perovskite in the lower mantle accommodates water of 1100 to 1800 ppm. Further experiments are necessary to clarify the detailed conditions for perovskite solid solution, to reliably analyze the valence and spin states of iron in the coexisting iron-bearing phases, and to compare the water solubility of different phases at different layers for deeply understanding the geodynamics of the Earth＇s interior and ore mineralization.

关键词： solid solution spin state of iron water solubility perovskite low mantle

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Evaluation of packet loss impairment on streaming video

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第z1期7卷 131-136页

作者： RUI Hua-xia li Chong-rong QIU sheng-ke Network Research Center Tsinghua University Beijing 100084 China Network Research Center Tsinghua University Beijing 100084 China Network Research Center Tsinghua University Beijing 100084 China

Video compression technologies are essential in video streaming application because they could save a great amount of network resources. However compressed videos are also extremely sensitive to packet loss which is inevitable in today's best effort IP network. Therefore we think accurate evaluation of packet loss impairment on compressed video is very important. In this work, we develop an analytic model to describe these impairments without the reference of the original video (NR) and propose an impairment metric based on the model, which takes into account both impairment length and impairment strength. To evaluate an impaired frame or video, we design a detection and evaluation algorithm (DE algorithm) to compute the above metric value. The DE algorithm has low computational complexity and is currently being implemented in the real-time monitoring module of our HDTV over IP system. The impairment metric and DE algorithm could also be used in adaptive system or be used to compare diffeient error concealment strategies.

关键词： Packet loss, Video streaming, MPEG-2 video, Video quality, No-Reference

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Molecular mapping of a stripe rust resistance gene in Chinese wheat cultivar Mianmai 41

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Journal of Integrative Agriculture 2015年第2期14卷 295-304页

作者： REN Yong li sheng-rong WEI Yu-ming ZHOU Qiang DU Xiao-ying HE Yuan-jiang ZHENG You-liang Triticeae Research Institute Sichuan Agricultural University Mianyang Institute of Agricultural Science/Mianyang Wheat Experimental Station China Agriculture Research System(CARS)

Stripe rust, caused by Puccinia striiformis f. sp. tritici（Pst）, is one of the most damaging diseases of wheat. Chinese wheat cultivar Mianmai 41 showed high resistance against most of the prevailing Pst races in China. Genetic analysis of the F1, F2 and F2：3 populations from a cross between Mianmai 41 and a susceptible line Mingxian 169 indicated that resistance to Pst race CYR32 was conferred by a single dominant gene, temporarily designated as Yr MY41. Molecular marker analysis placed the gene on chromosome 1B near the centromere. Six co-dominant genomic SSR markers Xwmc329, Xwmc406, Xgwm18, Xgwm131, Xgwm413, and Xbarc312, and one STS marker Xwe173 linked with the resistance gene. The two closest flanking SSR markers were Xgwm18 and Xwmc406, with genetic distances of 2.0 and 4.9 c M, respectively. A seedling test with 29 Pst isolates indicated the reaction patterns of Mianmai 41 were different from those of lines carrying Yr3, Yr9, Yr10, Yr15, Yr26, and Yr CH42 on chromosome 1B. Allelic tests indicated that Yr MY41 is likely a new allele at Yr26 locus.

关键词： Triticum aestivum L. yellow rust simple sequence repeat(SSR) marker sequence tagged site(STS) marker

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Comprehensive profiling and characterization of the absorbed components and metabolites in mice serum and tissues following oral administration of Qing-Fei-Pai-Du decoction by UHPLC-Q-Exactive-Orbitrap HRMS

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Chinese Journal of Natural Medicines 2021年第4期19卷 305-320页

作者： liU Wei HUANG Jian ZHANG Feng ZHANG Cong-Cong li rong-sheng WANG Yong-li WANG Chao-Ran liANG Xin-Miao ZHANG Wei-Dong YANG ling liU Ping GE Guang-Bo Key Laboratory of liver and Kidney Diseases(Ministry of Education) Institute of Liver DiseasesShanghai Key Laboratory of Traditional Chinese Clinical MedicineShuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China Institute of Interdisciplinary Integrative Medicine Research Shanghai University of Traditional Chinese MedicineShanghai 201203China Institute of Chinese Materia Medica Shanghai University of Traditional Chinese MedicineShanghai 201203China Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023China

Qing-Fei-Pai-Du decoction(QFPDD)is a Chinese medicine compound formula recommended for combating corona virus disease 2019(COVID-19)by National Health Commission of the People's Republic of *** latest clinical study showed that early treatment with QFPDD was associated with favorable outcomes for patient recovery,viral shedding,hospital stay,and course of the ***,the effective constituents of QFPDD remain *** this study,an UHPLC-Q-Orbitrap HRMS based method was developed to identify the chemical constituents in QFPDD and the absorbed prototypes as well as the metabolites in mice serum and tissues following oral administration of QFPDD.A total of 405 chemicals,including 40 kinds of alkaloids,162 kinds of flavonoids,44 kinds of organic acids,71 kinds of triterpene saponins and 88 kinds of other compounds in the water extract of QFPDD were tentatively identified via comparison with the retention times and MS/MS spectra of the standards or refereed by *** the help of the standards and in vitro metabolites,195 chemical components(including 104 prototypes and 91 metabolites)were identified in mice serum after oral administration of *** addition,165,177,112,120,44,53 constituents were identified in the lung,liver,heart,kidney,brain,and spleen of QFPDD-treated mice,*** findings provided key information and guidance for further investigation on the pharmacologically active substances and clinical applications of QFPDD.

关键词： Qing-Fei-Pai-Du decoction(QFPDD) Corona virus disease 2019(COVID-19) Chemical profiling Absorbed components High-Resolution Mass Spectrometry(HRMS)

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Shoot drying and its cause in Calamus simplicifolius at Nanmeiling, Hainan, China

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Journal of Forestry Research 2011年第4期22卷 681-684页

作者： li rong-sheng YIN Guang-tian YANG Jin-chang ZOU Wen-tao li Jian-guang ZHANG Shuai JIA Rui-feng KOU liang WANG Dong-guang Research Institute of Tropical Forestry Chinese Academy of ForestryGuangzhou 510520 Gaangdong Province P.R. China

Many stems are subject to shoot drying in the plantations of Calamus simplicifolius Wei at the Nanmeiling Base of the Forestry Bureau of Baisha County, Hainan Province. As a palm, stems of C simplicifolius stop growing and later die if the shoots are dry. Generally, shoot drying means reduced cane production and reduced profit for a rattan plantation. We aimed to quantify the incidence of shoot drying and determine its reason. We sampled eight 20 m × 20 m plots in the C simplicifolius plantations. In each plot, we counted stems and categorized them as drying shoot or normal shoot, and mother stem or sucker stem. We measured stem length and categorized them as drying shoot and normal shoot for mother stems. We cut open each shoot-drying stem to determine the cause of drying from drying part to fresh part. The frequency of mother stems （259 stem·ha^-1）, was significantly lower than sucker stems （588 stem·ha^-1）. The percentage of shoot drying was 33.8% for mother stems, not significantly higher than that for sucker stems （18,9%）. The mother shoot stems were significantly shorter if they were drying than if normal. 80% of stems with a drying shoot were hollow within the leaf sheath, whereas 10% hosted lively mature larvae （one larvae per shoot） and 10% hosted several lively young larvae. Mature larvae were identified as the Red Palm Weevil, Rhynchophorus ferrugineus Oliver. To confirm the present of the weevil, three pheromone traps for the weevil were set up in the plantations and adult weevils were trapped on the next day and identified as the Red Palm Weevil. We conclude that shoot drying of C. simplicifolius is probably caused by the Red Palm Weevil.

关键词： Calamus simpliciJolius rattan shoot drying Red Palm Wee-vil Rhynchophorus ferrugineus

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Reticulocyte hemoglobin content in the diagnosis of iron deficiency in Chinese pre-menopausal women

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Chinese Medical Journal 2007年第11期120卷 1010-1012页

作者： LUO Dan CHEN Yu WU Wei ZHANG Feng XU Jia CUI Wei li Shu-lan li rong-sheng Department of Clinical Laboratory General Hospital of Air Force Beijing 100036 China Department of Clinical Laboratory Peking Union Medical College Hospital Chinese Academic of Medical Science ＆ Peking Union Medical College Beijing 100730 China Department of Hematology Peking Union Medical College Hospital Chinese Academic of Medical Science ＆ Peking Union Medical College Beijing 100730 China

Pre-menopausal women are at risk for iron deficiency due to menstrual blood losses. The prevalence rates （PR） of iron depletion, iron deficiency anemia （IDA）, and iron deficiency were 34.4%, 15.1% and 49.5% in pre-menopausal non-pregnant women respectively in China.1 Traditionally, the diagnosis of iron deficiency relies on the hematological markers （hemoglobin （HGB）, mean corpuscular volume （MCV）, mean corpuscular hemoglobin （MCH）, red cell distribution width （RDW）） and biochemical markers （serum ferritin （SF）, serum iron （SI）, transferrin saturation （TS）, total iron-binding capacity （TIBC））. Recently, the reticulocyte hemoglobin content （CHr） is considered to be used as a marker of iron deficiency.2 The aim of this study was to compare the diagnostic efficiency of CHr with the old markers in diagnosis of iron deficiency in Chinese pre-menopausal women.

关键词： reticulocyte iron deficiency iron deficiency anemia

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论资源节约型农业结构

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资源科学 1999年第2期21卷 18-23页

作者：李荣生中国科学院地理研究所

从资源约束和现状浪费，强调中国提倡节约的必要性；节约的目标是增产增效、促进农业可持续发展；评价其是否属于节约型主要看它与区域资源组合的吻合度和结构的关联度、协调性；把树立节约意识、面向国土资源、发展农业生态工程和依靠... 详细信息

从资源约束和现状浪费，强调中国提倡节约的必要性；节约的目标是增产增效、促进农业可持续发展；评价其是否属于节约型主要看它与区域资源组合的吻合度和结构的关联度、协调性；把树立节约意识、面向国土资源、发展农业生态工程和依靠科技进步作为结构建设的四大举措。

关键词：资源节约型农业结构农业资源

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慢性病贫血

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中华检验医学杂志 2011年第2期34卷 190-192页

作者：李蓉生中国医学科学院 100730 北京协和医学院北京协和医院血液科

19世纪初，法国学者就发现某些传染性疾病（如伤寒、天花）伴有小细胞性贫血。以后，在临床上逐渐注意到许多慢性疾病（如感染、炎症和恶性肿瘤）伴发的贫血有一定的特点，主要表现为铁的利用障碍，故早期这类贫血曾被称为“铁粒幼细胞... 详细信息

19世纪初，法国学者就发现某些传染性疾病（如伤寒、天花）伴有小细胞性贫血。以后，在临床上逐渐注意到许多慢性疾病（如感染、炎症和恶性肿瘤）伴发的贫血有一定的特点，主要表现为铁的利用障碍，故早期这类贫血曾被称为“铁粒幼细胞贫血伴网状内皮系统含铁血黄素沉着症”，20世纪后改称为“慢性病贫血”。实际上，“慢性病贫血”一词对这类贫血并不是十分恰当＾［1］，且容易与慢性系统性疾病（如肝病、肾病及内分泌疾病）伴随的贫血相混淆。

关键词：慢性病贫血含铁血黄素沉着症铁粒幼细胞贫血慢性系统性疾病小细胞性贫血网状内皮系统传染性疾病内分泌疾病

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胶东流口金矿黄铁矿成因矿物学及稳定同位素研究

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矿物岩石 2011年第4期31卷 58-66页

作者：严育通李胜荣地质过程与矿产资源国家重点实验室中国地质大学(北京)北京100083

针对流口金矿黄铁矿成因矿物学研究表明金矿元素组合以Co,Ni,Bi,Cu,Mo,Sn,Ti,Cr为特征,δFe-δS,δFe/δS-As,(Fe+S)-As,Co-Ni-As等成因标型表明为岩浆热液型金矿。黄铁矿矿体部位元素图解和晶胞参数显示出该矿为中深成矿床,热电性显示... 详细信息

针对流口金矿黄铁矿成因矿物学研究表明金矿元素组合以Co,Ni,Bi,Cu,Mo,Sn,Ti,Cr为特征,δFe-δS,δFe/δS-As,(Fe+S)-As,Co-Ni-As等成因标型表明为岩浆热液型金矿。黄铁矿矿体部位元素图解和晶胞参数显示出该矿为中深成矿床,热电性显示成矿温度为中高温。硫同位素值为7.0‰～7.9‰,平均值为7.4‰,数值集中,显示硫的来源单一。Pb同位素206Pb/204Pb值为16.395～16.703,207Pb/204Pb值为15.261～15.395,208Pb/204Pb值为37.364～37.958,在显示为深成的下地壳铅。D-O同位素显示本矿热液为岩浆水和大气水的混合,C-O同位素表明本矿C源主要是花岗岩,其次有部分海相碳酸盐通过溶解作用混入的C源。综上可知,本矿是中深成、中高温岩浆热液型金矿,与石英脉和蚀变岩型金矿具有显著差别。

关键词：流口金矿黄铁矿成分标型同位素成因

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贵州遵义下寒武统黑色岩系型Ni,Mo矿床Rb-Sr同位素测年与示踪研究

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矿物岩石 2005年第1期25卷 62-66页

作者：江永宏李胜荣岩石圈构造与深部过程及探测技术教育部重点实验室中国地质大学

　湘、黔地区张家界、遵义一带分布有黑色岩系型Ni-Mo-PGE矿床,对Re-Os同位素研究发现张家界和遵义两地矿床虽相距400km,但它们是同一期矿化作用的产物,其等时线年龄(542Ma±11Ma)为金属矿物生成年龄,也为矿化年龄,接近前寒武纪和寒武... 详细信息

　湘、黔地区张家界、遵义一带分布有黑色岩系型Ni-Mo-PGE矿床,对Re-Os同位素研究发现张家界和遵义两地矿床虽相距400km,但它们是同一期矿化作用的产物,其等时线年龄(542Ma±11Ma)为金属矿物生成年龄,也为矿化年龄,接近前寒武纪和寒武纪的分界时限,而铷-锶测年一般被认为是反映后期构造热事件年龄,研究发现Rb-Sr等时线年龄大约为277Ma±37Ma,相当于石炭与二叠界线年龄(290Ma),属于海西晚期。Rb-Sr同位素体系与Re-Os同位素体系有显然不同的物质来源。Re,Os同位素显示它们是同一期矿化作用的产物,而187Os/186Os=16.355～96.664(平均62.081),不仅高于陨石和地幔的相应值,也高于海洋沉积物的比值,其下限值与地壳的均值较为接近,体现了陆相壳源特征,显然黑色岩系的物质来源多样,不限于海水。87Sr/86Sr为0.7120±0.0020,明显高于玄武岩的值(0.704),而比陆源硅酸盐的值(0.720)偏低,表明为陆源物质和深源物质的混合物,而且深源物质对87Sr/86Sr的影响大于来自于岛弧间浅海陆棚地区的陆源物质。因为后生期构造热变质事件与有机质的热解过程或热演化史相关,所以该过程应影响了成矿早期富集的PGE元素在后生期,伴随着热变质事件而出现在富烃有机质流体中的活化、迁移以及再次富集。

关键词：黑色岩系 Sr同位素测年物质来源等时线年龄陆源物质矿床有机质遵义变质

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