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Endocrine correlates of mate choice and promiscuity in females of a socially monogamous avian mating system with alternative male reproductive phenotypes

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Current Zoology 2014年第6期60卷 804-815页

作者： Hubert SCHWABL Willow R. LINDSAY Douglas G. barron Michael S. WEBSTER School of Biological Sciences and Center for Reproductive Biology Washington State University Pullman WA 99164-4236 USA Department of Department of Biological and Environmental Sciences Goteborg University Box 463405 30 Goteborg Sweden Department of Psychology University of South Florida Tampa FL 33620-7200 USA Department of Neurobiology and Behavior and Comell Laboratory for Ornithology Comell University Ithaca NY 14850 USA

While our understanding of male reproductive strategies is informed by extensive investigations into endocrine mechanisms, the proximate mechanisms by which females compete for mates and adjust reproduction to social environment remains enigmatic. We set out to uncover endocrine correlates of mate choice, social environment, and reproductive investment in female red-backed fairy-wrens Malurus melanocephalus. In this socially monogamous, yet highly sexually promiscuous species, females experience discrete variation in the phenotype of their mates, which vary in both plumage signals and level of paternal care, and in the composition of their breeding groups, which consist of either the pair alone or with an additional cooperative auxiliary; fe- male investment varies according to these social parameters. We found that androgen, estrogen, and glucorticoid levels varied with reproductive stage, with highest androgen and estrogen concentrations during nest construction and highest corticosterone concentrations during the pre-breeding stage. These stage-dependent patterns did not vary with male phenotype or auxiliary presence, though androgen levels during pre-breeding mate selection were lower in females obtaining red/black mates than those obtaining brown mates. We found no evidence that androgen, estrogen, or corticosterone levels during the fertile period were re- lated to extra-pair young （EPY） frequency. This study demonstrates clear changes in steroid levels with reproductive stage, though it found little support for variation with social environment. We suggest hormonal responsiveness to social factors may be physiologically constrained in ways that are bypassed through exogenous hormone manipulations.

关键词： Androgen Estrogen Glucocorticoid Mate choice Promiscuity Alternative phenotypes

牙龈卟啉单胞菌超声提取物对人牙周膜干细胞骨向分化的影响

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现代口腔医学杂志 2007年第6期21卷 603-605页

作者：侯建霞 Peter M Loomer barron Hong 北京大学口腔医学院 100081 美国加利福尼亚大学旧金山分校

目的本研究目的是检测牙龈卟啉单胞菌(Porphyromonas gingivalis,***)2561超声提取物对人牙周膜干细胞(Human periodontal ligament stemcells,hPDLSCs)的增殖及其骨向分化相关蛋白表达的影响。方法标准厌氧培养环境下培养***。收集细... 详细信息

目的本研究目的是检测牙龈卟啉单胞菌(Porphyromonas gingivalis,***)2561超声提取物对人牙周膜干细胞(Human periodontal ligament stemcells,hPDLSCs)的增殖及其骨向分化相关蛋白表达的影响。方法标准厌氧培养环境下培养***。收集细菌菌落,离心,制备细菌的超声提取物,然后以不同的浓度加入hPDLSCs的培养液中。培养六天后观察hPDLSCs的增殖及碱性磷酸酶(Alkaline phosphatase,ALPase)的表达。提取蛋白并用Western Blotting检测骨黏结蛋白(Osteonectin,ON)的表达。结果与对照组相比,***明显抑制hPDLSCs的生长(P<0.05),显著降低了hPDLSCs中ALPase的表达(P<0.05);1μg/***上调ON的表达,而100μg/***明显下调ON的表达。结论这些结果提示作为牙周炎病原菌,大量的***可能,至少部分通过抑制hPDLSCs的增殖及其骨向分化能力,抑制了牙周炎症所致牙周组织破坏后牙周组织的自我修复能力。

关键词：牙周膜干细胞牙龈卟啉单胞菌骨向分化碱性磷酸酶骨黏结素

Magnetic discrimination between Al-substituted hematites synthesized by hydrothermal and thermal dehydration methods and its geological significance

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Magnetic discrimination between Al-substituted hematites syn...

中国科学院地质与地球物理研究所2012年度（第12届）学术年会

作者： Zhaoxia jiang Qingsong Liu Vidal barron jose Torrent Yongjae Yu State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of Sciences Graduate School of the Chinese Academy of Sciences Departamento de Agronomia Universidad de Cordoba Department of Geology and Earth Environmental Sciences Chungnam National University

[1]Hematite,a ubiquitous mineral in aerobic sediments and soils of temperate and warm areas,is weakly ***,it carries a stable natural remanent magnetization,and thus can reflect paleoenvironment *** quantify the influence of Al content in hematite on its magnetic properties,two series of hematite particles were prepared by hydrothermal transformation of fenrihydrite in aqueous suspension(HFh* series) and by

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Characterizing and quantifying iron oxides in Chinese loess/paleosols:Implications for pedogenesis

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Characterizing and quantifying iron oxides in Chinese loess/...

中国科学院地质与地球物理研究所2013年度（第13届）学术年会

作者： Pengxiang Hu Qingsong Liu josé Torrent Vidal barron Chunsheng jin State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of Sciences Departamento de Agronomfa Universidad de CordobaEdificio C4Campus de Rabanales14071 CordobaSpain Division of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of Sciences

To accurately decode the paleoclimatic and paleoenvironmental significance of magnetic properties in Chinese loess/paleosols,neoformation of magnetic iron oxides via pedogenesis as well as the relationship between ferrimagnetic(maghemite and magnetite)and antiferromagnetic minerals(hematite and goethite)of both detrital and pedogenic origins should be well *** resolve this problem, magnetic iron oxides from a contiguous loess-paleosol sequence(lower part of the loess unit L1,paleosol unit S1,and the upper part of L2)at Luochuan,Center of the Chinese Loess Plateau,were well characterized and quantified by using an integrated approach including chemical dissolution,diffuse reflectance spectroscopy and rock magnetism *** showed that these magnetic minerals have distinct coercivity and dissolution behavior,which is highly grain *** specifically, the paleosol is enriched with nano-sized pedogenic hematites with a medium coercivity of～130 mT, which are also preferentially dissolved in a weak reductive *** contrast,the coarse-grained micro-sized detrital hematites with a medium coercivity of～1T are dominant in loess,In addition,these coarse-grained detrital hematites are more stoichiometric than their pedogenic counterparts as evidenced by the higher band position on the diffuse reflectance *** can be well distinguished from hematite by its higher coercivity(4-7T)at low temperature(10K).The consistent dissolution behavior of goethite for both loess and paleosol samples in citrate-bicarbonate-dithionite solution indicates that goethite could be less relevant to the pedogenic *** reductive dissolution of pedogenic maghemite lags the dissolution of pedogenic hematite and fine-grained goethite,which suggests that average grain size of pedogenic maghemite is relatively larger than those of pedogenic hematite and fine-grained *** magnetite is hard to dissolve and～50%of its initial remanence su

关键词： pedogenesis magnetic iron oxides dissolution rock magnetism diffuse reflectance spectroscopy Chinese loess

Testing the magnetic proxy XFD/HIRM for quantifying paleoprecipitation in modern soil profiles from Shaanxi Province,China

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Testing the magnetic proxy XFD/HIRM for quantifying paleopre...

中国科学院地质与地球物理研究所2013年度（第13届）学术年会

作者： Zhifeng Liu Qingsong Liu josé Torrent Vidal barron Pengxiang Hu State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of Sciences Graduate University of Chinese Academy of Sciences Departamento de Agronomia Universidad de CordobaEdificio C4Campus de Rabanales14071 CordobaSpain

Soils are natural archives of paleoclimates,especially for *** magnetic parameters of soils are of great interest for paleoenvironmental and paleoclimatic ***,magnetite, maghemite,hematite,and goethite are the main minerals controlling the magnetic properties of soils. The application of magnetic methods in large areas is,however,limited due to the potential effects of parent ***,magnetic measurements were conducted on modern soil profiles along a North-South transect in Shaanxi Province,China,to test a new magnetic proxy,defined as the ratio between the absolute frequency dependent susceptibility and the hard isothermal remanence magnetization(x/HIRM)for paleoprecipitation *** specifically,xand HIRM were used as semi-quantitative proxies for the ferrimagnets(magnetite and maghemite)and hematite concentrations,*** proxy x/ HIRM,estimated from the scatter plots of xand HIRM ranges between 4.5 and 97.6×10mAand systematically increases with the mean annual precipitation(MAP)fiom 300 to 1000 mm(x/HIRM= 0.124×MAP-31.5,R=0.92)with an error of±70 mm for the paleoprecipitation estimation,but is less related to mean annual temperature(MAT)(R=0.29 for a MAT range of 8-15℃).For MAP1000 mm, the x/HIRM value was only 17.8×10mAas the likely result of reductive dissolution or alteration,the effect being more marked for ferrimagnets than for *** summary,this new paleoclimatic transfer function has potential to predict MAP for Holocene soils with MAP<1000 mm,providing that there is no reductive dissolution or alteration of the iron oxides and the effect of other influential factors(***

关键词： magnetic proxy paleoprecipitation climate transfer function modern soil

牙龈卟啉单胞菌超声提取物对hPDLSCs表达VEGF的影响

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实用口腔医学杂志 2007年第2期23卷 176-179页

作者：侯建霞邵磊 Peter M Loomer barron Hong 北京大学口腔医学院牙周科 100081 东风汽车公司襄樊医院口腔科美国加利福尼亚大学旧金山分校牙周科

目的:观察牙龈卟啉单胞菌(Porphyromonas gingivalis,Pg)超声提取物对人牙周膜干细胞(human per-iodontal ligament stem cells,hPDLSCs)表达血管内皮生长因子(vascular endothelial growth factor,VEGF)及基质金属蛋白酶-9(matrix metalloproteinase-9,MMP-9)的影响。方法:标准厌氧培养环境下培养Pg,收集细菌菌落,离心,制备细菌的超声提取物,然后以不同的浓度加入hPDLSCs的培养液中。培养6d,分别观察第2、4、6天时hPDLSCs的增殖情况。提取蛋白并用Western Blotting法检测VEGF和MMP-9的表达。结果:与对照组相比,第2天时,10μg/ml和100μg/mlPg轻度促进hPDLSCs的生长,第4天时,10μg/ml和100μg/mlPg则明显抑制hPDLSCs的生长(P<0.05),第6天时,3种浓度的Pg均明显抑制hPDLSCs的生长(P<0.05);1μg/ml和10μg/mlPg上调VEGF的表达,100μg/mlPg明显抑制VEGF的表达;3种浓度的Pg均上调hPDLSCs中MMP-9的表达。结论:作为牙周炎病原菌,大量的Pg可能通过抑制hPDLSCs的生长增殖,抑制局部血管重建以及加速细胞外基质的降解而降低了牙周组织的自我修复能力。

关键词：牙周膜干细胞牙龈卟啉单胞菌血管内皮生长因子基质金属蛋白酶

Review of the El Soplao Amber Outcrop,Early Cretaceous of Cantabria,Spain

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Acta Geologica Sinica(English Edition) 2010年第4期84卷 959-976页

作者： María NAjARRO Enrique PENALVER Ricardo PEREZ-DE LA FUENTE jaime ORTEGA-BLANCO Cesar MENOR-SALVAN Eduardo barron Carmen SORIANO Idoia ROSALES Rafael LOPEZ DEL VALLE Francisco VELASCO Fernando TORNOS Véronique DAVIERO-GOMEZ Bernard GOMEZ Xavier DELCLOS Instituto Geologico y Minero de Espana E-28003MadridSpain Departament d'Estratigrafia Paleontologia i Geociencies MarinesFacultat de GeologiaUniversitat de BarcelonaE-08071BarcelonaSpain Centro de Astrobiologia(CSIC-INTA) E-28850Torrejon de ArdozSpain European Synchrotron Radiation Facilities F-38000 GrenobleFrance/Geosciences Rennes-Universite de Rennes 1F-35042 RennesFrance El Soplao S.L. Prao El CollaoE-39553CantabriaSpain Universidad del Pais Vasco Dpto.Mineralogia y PetrologiaE-48080 BilbaoSpain CNRS-UMR 5125 PEPS Universite Lyon 1GeodeF-69622 VilleurbanneFrance

El Soplao outcrop, an Early Cretaceous amber deposit recently discovered in northern Spain （Cantabria）, has been shown to be the largest site of amber with arthropod inclusions that has been found in Spain so far. Relevant data provided herein for biogeochemistry of the amber, palynology, taphonomy and arthropod bioinclusions complement those previously published. This set of data suggests at least two botanical sources for the amber of El Soplao deposit. The first （type A amber） strongly supports a source related to Cheirolepidiaceae, and the second （type B amber） shows non-specific conifer biomarkers. Comparison of molecular composition of type A amber with Frenelopsis leaves （Cheirolepidiaceae） strongly suggests a biochemical affinity and a common botanical origin. A preliminary palynological study indicates a regional high taxonomical diversity, mainly of pteridophyte spores and gymnosperm pollen grains. According to the preliminary palynological data, the region was inhabited by conifer forests adapted to a dry season under a subtropical climate. The abundant charcoalified wood associated with the amber in the same beds is evidence of paleofires that most likely promoted both the resin production and an intensive erosion of the litter, and subsequent great accumulation of amber plus plant cuticles. In addition, for the first time in the fossil record, charcoalified plant fibers as bioinclnsions in amber are reported. Other relevant taphonomic data are the exceptional presence of serpulids and bryozoans on the surfaces of some amber pieces indicating both a long exposure on marine or brackish-water and a mixed assemblage of amber. Lastly, new findings of insect bioiuclusions, some of them uncommon in the fossil record or showing remarkable adaptations, are reported. In conclusion, a documented scenario for the origin of the El Soplao amber outcrop is provided.

关键词： fossil resin chemotaxonomy paleobotany charcoal arthropod bioinclusions taphonomy EarlyAlbian

Influence of Synthesis Parameters on Luminescence of Thenoyltrifluoroacetone Europium Powders

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journal of Materials Science and Chemical Engineering 2018年第8期6卷 1-8页

作者： Dulce Y. Medina-Velazquez Manuel Barraza Miguel barron Isaias Hileio Victor Colin División de Ciencias Básicas e Ingeniería Universidad Autónoma Metropolitana-Azcapotzalco Reynosa Mexico

In the last years the development of new luminescent materials was grow highly in order to find efficient materials with low cost of processing. In this way the organic luminescent materials have special attention because its special characteristics, like antenna effect, low temperature processing, possibility to make translation to polymeric and flexible compounds. In this work luminescent powders of TTA:Eu3+ by sol-gel method were synthesized in order to define the synthesis parameters of the highest luminescence. The temperatures of heat treatment were 80°C, 100°C, 200°C and the concentration of Europium where 10%, 20%, 30% and 40% mol (TTA-10Eu, TTA-20Eu, TTA-30Eu, and TTA-40Eu). Fourier Transform Infrared Rays analysis (FTIR) and emission luminescence measures, the best conditions of synthesis were obtained at 40% mol of Europium and 80°C of heat treatment, at 272 nm of excitation. All the samples present the corresponded Eu3+ ion transitions the 5D0 → 7Fj (j = 0, 1, and 2). This confirms the great possibilities of these materials for optoelectronic applications.

关键词： Luminescence Europium Organic Compounds Thenoyltrifluoroacetone Antenna Effect

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视网膜移植后结构和功能的重建

视网膜移植后结构和功能的重建

中华医学会第十二届全国眼科学术大会

作者：彭清 Biju Thomas Ernesto barron Magdalene j.Seiler 山西医科大学第一医院眼科

目的：探索胚胎大鼠视网膜片层移植到视网膜退行性变性 S334ter—line—3大鼠视网膜下间隙后其受体鼠视网膜视觉传导功能的重建和供受体之间突触连接的形成。方法：用特

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