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21篇 您的检索式:作者名="DALLAI"
    题名 作者 年代 出处 被引量
1安徽女山橄榄岩包体的氧同位素比值和微量元素组成:地幔交代作用显示文摘本文的研究对象是9个来自安徽女山新生代玄武岩的橄榄岩包体,利用激光氟化技术系统分析了橄榄石、单斜辉石和斜方辉石的氧同位素比值;利用LA-ICPMS技术分析了单斜辉石的微量元素组成。结果显示,女山橄榄岩存在辉石与橄榄石之间的氧同位素不平衡分馏现象,其中△Cpx-Ol18O(=δ18OCpx-δ18OOl)出现低至-0.5‰的负值;含角闪石包体中的单斜辉石明显富集大离子亲石元素(LILE,如Sr、Th、LREE)和亏损高场强元素(HFSE,如Nb、Zr、Ti)。氧同位素的数据表明,女山上地幔曾经经历过俯冲洋壳流体参与的交代作用,根据单斜辉石和橄榄石之间氧同位素分馏值△Cpx-Ol18O与包体形成深度之间的负相关性,提出了一个“上升+缓冲”的流体交代模型。虽然微量元素特征也表明女山上地幔受到过地壳流体的影响,但是氧同位素的不平衡分馏和LILE的富集/HFSE的亏损并不是同步的,对这种现象的可能解释是:引起氧同位素不平衡分馏的交代作用和造成女山单斜辉石微量元素特征的交代作用不是同一期的,即女山上地幔曾经发生过至少2次交代事件。于慧敏 夏群科 Dallai L Chazot G 2005岩石学报2005,21,3:12
2地幔氧同位素不均一性:女山单斜辉石巨晶的激光氟化分析显示文摘对女山14个单斜辉石巨晶进行了主要元素、稀土元素和氧同位素组成的分析, 结果表明它们是同一幔源碱性玄武质源岩浆在高压下分离结晶的产物. 巨晶的氧同位素组成内部均一, 但不同样品间表现出明显的不均一性: δ18O = 4.86‰~6.48‰. 巨晶氧同位素的变化继承自源岩浆, 源岩浆的不均一性来源于洋壳物质的源区混染.夏群科 L. Dallai 曹宏 陈道公 吴元保 程昊 2001科学通报2001,46,19:4
3The novel antibacterial peptide ceratotoxin a alters permeability of the inner and outer membrane of Escherichia coli K-12显示文摘MARRI L DALLAI R MARCHINI D 1996Current Microbiology1996,33,:1
4Origin of CO 2 and carbonate veins in mantle-derived xenoliths in the Pannonian Basin显示文摘A. Demény L. Dallai M.-L. Frezzotti T.W. Vennemann A. Embey-Isztin G. Dobosi G. Nagy 2010LITHOS2010,,1:1
5The mitochondrial genome of the olivefly Bactrocera oleae:two haplotypes from distant geographical locations显示文摘Nardi E C Arapell A Dallai R 0,,06:1
6The novel antibacterial peptide ceratotoxin A alters permeability of the inner and outer membrane of Escherichia coli K - 12 显示文摘Marri L Dallai R Marchini D 1996Current Microbiology1996,33,:1
7Spermatozoa of Megaloptera and Raphidioptera (Insecta, Neuropteroidea) 显示文摘Afzelius B A Dallai R 1988J Ultrastr Mol Stuct Res1988,101,23:1
8H2O contents and D/ H ratios of nominally anhydrous minerals from ultrahighpressure eclogites of the Dabie orogen, eastern China显示文摘Sheng Y M Xia Q K Dallai L 2007Geochimica et Cosmochimica Acta2007,71,:1
9Sperm ultrastructure of Mantophasrna zephyra (Insecta, Mantophasmatodea) 显示文摘DALLAI R FRATI F LUPETTI P 2003Zoomorphology2003,122,2:1
10Microtubular diversity in insect spermatozoa: Results obtained with a new fixative显示文摘Dallai R Afzelius B A 1990Journal of Structural Biology1990,103,:1
11Population structure and colonization history of the olive fly,Bactrocera oleae(Diptera,Tephritidae)显示文摘NARDI F CARAPELLI A DALLAI R 2005Molecular Ecology2005,14,9:1
12The mitochondrial genome of the olive fly Bactrocera oleae:two haplotypes from distant geographical locations显示文摘Nardi F Carapelli A Dallai R Frati F 0,,06:1
13Sperm ultrastructure of Mantophasma zephyra (Insecta:Mantophasmatodea)显示文摘Dallai R Frati F Lupetti P 2003Zoomorphology2003,122,2:1
14Oxygen isotopic heterogeneity in the mantle: Evidence from clinopyroxene megacrysts of Nüshan, eastern China显示文摘Major element, REE and oxygen isotopic com-positions of fourteen clinopyroxene megacrysts from Nushan, eastern China have been obtained. They are believed to rep-resent crystallization products of one mantle-derived alkali basaltic magma. Oxygen isotopic ratios are homogeneous within the same sample, but heterogeneous among different samples, δ18O values of these megacrysts are from 4.86‰ to 6.48‰. We suggest that the oxygen isotopic variation of cli-nopyroxene megacrysts should be inherited from their source magma, and the heterogeneity of source magma re-sults from contamination of subducted oceanic materials.XIA Qunke Dallai Luigi CAO Hong CHEN Daogong WU Yuanbao CHENG Hao 2002Chinese Science Bulletin2002,47,3:1
15Sperm ultrastructure of Mantophasma zephyra ( Insecta, Mantophas-matodea)显示文摘Dallai R Frati F Lupetti P 2003Zoomorphology2003,122,:1
16The Novel Antibacterial Peptide Ceratotoxin A Alters Permeability of the Inner and Outer Membrane of Escherichia coli K-12显示文摘Laura Marri Romano Dallai Daniela Marohini 1996Current Microbiology1996,33,:1
17Stable isotope and noble gas isotope compositions of inclusion fluids from Larderello geothermal field (Italy) : constraints to fluid origin and mixing processes 显示文摘Dallai L Magro G Petrucci E 2005Journal of Vol- canology and Geothermal Research2005,148,1:1
18Acceptability of long-acting, progestin-only contraception in Europe: a two-year prospective, non-interventional study显示文摘Short M Dallay D Omokanye S 2014Eur J Contracept Reprod Health Care2014,19,1:1
19Sperm ultrastructure of Mantophasma zephyra (Insecta,Mantophasmatodea)显示文摘DALLAI R FRATI F LUPETH P 0,,122:1
20Population structure and colonization history of the olive fly, Bactrocera oleae (Diptera, Tephritidae) 显示文摘NARDI F CARAPELLI A DALLAI R 2005Molecular Ecology2005,14,:1
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