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7篇 您的检索式:作者名="A.Armstrong"
    题名 作者 年代 出处 被引量
1史前时期的崇鸟习俗及其历史背景显示文摘以绘画和雕塑方式表现的鸟禽形象广泛地存在于史前时代世界众多先民中。自19世纪后期在世界众多地区发现并被确认以来,对于其含义的解读便从未间断。《史前时期的崇鸟习俗及其历史背景》一文对于这些发现和研究作了比较全面的总结。这是一篇完成于40多年以前的文章,译者选择该文,当然不是着眼于考古资料本身,甚至也不在于作者的观点多么新颖,更为重要的是从学术史的角度,了解近半个世纪前西方人类学家在解读此类题材时所涉及的诸多理论。作者认同早期艺术中的动物形象具有鲜明的原始宗教意义,并从丰产巫术、成丁礼、图腾崇拜、通天媒介和鸟的死亡象征意义等多个角度对特定图像进行了功能性阐释。作者对于这类图像所采取的多重可能性解释本身,已经反映出此类问题的复杂性。半个多世纪过去了,我们发现,除了在考古学本体论方面我们'发明'了认知考古学,并将'符号'的概念赋予这些早期艺术品之外,对于'洞穴艺术'或'符号'含义的阐释,我们似乎并没有走很远。作者是一位人类学家,文中不经意间流露出的国外人类学方面的知识与信息,如鸟禽除了为人类提供肉食与禽蛋之外,鸟骨可以做成骨笛(现在知道我国新石器时代早期也有发现),可以盛放颜料,蛋清还可以当作调制颜料的粘合剂。这些,对于考古学者来说都是别有新意的。爱德华·A·阿姆斯特朗(Edward A.Armstrong) 陈淑卿(译) 方辉(校) 2006南方文物2006,,4:8
2抗虫棉花显示文摘我们将苏云金芽孢杆菌(Bacillus thuringiensis)的两个变种 B.t.kurstaki HD-1(cryIA(b)和 HD-73(cryIA(c)的抗虫基因进行修饰后转化棉花并使其得到表达,其表达的抗虫蛋白能有效地毒杀农业生产上重要的鳞翅目害虫。在实验室中测定了这些转基因棉花叶组织的总抗虫能力,试验所用的两个鳞翅目昆虫是对 B.t.k.抗虫蛋白相对敏感的甘蓝尺蠖(Trichoplusia ni,cabbage looper)和敏感性比甘蓝尺蠖低100倍的甜菜粘虫(Spodoptera exigua,beet armyworm)。在高虫口密度胁迫下用棉铃虫(Heliothis zea.cotton bollworm)对整株棉花进行抗虫试验,结果显示出蕾、铃的有效抗虫性。对棉花植株进行的免疫(?)迹分析表明,抗虫蛋白的含量为总可溶性蛋白的0.05~0.1%。我们将这些结果视为向农业生产上推广这种经过抗虫遗传改良的经济价值高、种植面广的农作物的主要一步。Frederick J.Perlak Randy W.Deaton Toni A.Armstrong Roy L.Fuchs Steven R.Sims John T.Greenplate David A.Fischhoff 张震林 1991江西棉花1991,,4:2
3Transgenic rice (Oryza sativa) endosperm expressing daffodil (Narcissus pseudonarcissus) phytoene synthase accumulates phytoene, a key intermediate of provitamin A biosynthesis显示文摘Peter K.Burkhardt PeterBeyer JoachimWünn AndreasKl?ti Gregory A.Armstrong MichaelSchledz JohannesLintig IngoPotrykus The Plant Journal0,,:2
4Ultrahigh‐resolution mass spectrometry of simulated runoff from treated oil sands mature fine tailings显示文摘John V.Headley Sarah A.Armstrong Kerry M.Peru Randy J.Mikula James J.Germida Mmilili M.Mapolelo Ryan P.Rodgers Alan G.Marshall 2010Rapid Commun. Mass Spectrom2010,,16:1
5Stenian A-type granitoids in the Namaqua-Natal Belt,southern Africa,Maud Belt,Antarctica and Nampula Terrane,Mozambique:Rodinia and Gondwana amalgamation implications显示文摘We carried out SHRIMP zircon U-Pb dating on A-type granitic intrusions from the Namaqua-Natal Province,South Africa,Sverdrupfjella,western Dronning Maud Land,Antarctica and the Nampula Province of northern Mozambique.Zircon grains in these granitic rocks are typically elongated and oscillatory zoned,suggesting magmatic origins.Zircons from the granitoid intrusions analyzed in this study suggest^1025-1100 Ma ages,which confirm widespread Mesoproterozoic A-type granitic magmatism in the Namaqua-Natal(South Africa),Maud(Antarctica)and Mozambique metamorphic terrains.No older inherited(e.g.,~2500 Ma Achean basement or^1200 Ma island are magmatism in northern Natal)zircon grains were seen.Four plutons from the Natal Belt(Mvoti Pluton,Glendale Pluton,Kwalembe Pluton,Ntimbankulu Pluton)display 1050-1040 Ma ages,whereas the Nthlimbitwa Pluton in northern Natal indicates older 1090-1080 Ma ages.A sample from Sverdrupfjella,Antarctica has^1091 Ma old zircons along with^530 Ma metamorphic rims.Similarly,four samples analysed from the Nampula Province of Mozambique suggest crystallization ages of^1060-1090 Ma but also show significant discordance with two samples showing younger^550 Ma overgrowths.None of the Natal samples show any younger overgrowths.A single sample from southwestern Namaqualand yielded an age of^1033 Ma.Currently available chronological data suggest magmatism took place in the Namaqua-Natal-MaudMozambique(NNMM)belt between^1025 Ma and^1100 Ma with two broad phases between^1060-1020 Ma and 1100-1070 Ma respectively,with peaks at between^1030-1040 Ma and^1070-1090 Ma.The age data from the granitic intrusions from Namaqualand.combined with those from Natal,Antarctica and Mozambique suggest a crude spatial-age relationship with the older>1070 Ma ages being largely restricted close to the eastern and western margins of the Kalahari Craton in northern Natal,Mozambique.Namaqualand and WDML Antarctica whereas the younger<1060 Ma ages dominate in southern Natal and western Namaqualand and are largely restricted to the southern and possibly the western margins of the Kalahari Craton.The older ages of magmatism partially overlap with or are marginally younger than the intracratonic Mkondo Large lgneous Provinee intruded into or extruded onto the Kalahari Craton,suggesting a tectonic relationship with the Maud Belt.Similar ages from granitic augen gneisses in Sri Lanka suggest a continuous belt stretching from Namaqualand to Sri Lanka in a reconstituted Gondwana,formed during the terminal stages of amalgamation of Rodinia and predating the East African Orogen.This contiguity contributes to defining the extent of Rodinia-age crustal blocks,subsequently fragmented by the dispersal of Rodinia and Gondwana.Tomokazu Hokada Geoffrey H.Grantham Makoto Arima Satoshi Saito Kazuyuki Shiraishi Richard A.Armstrong Bruce Eglington Keiji Misawa Hiroshi Kaiden 2019Geoscience Frontiers2019,10,6:1
6Please join us for the 3rd New Horizons in Cancer Research Conference显示文摘On behalf of the American Association for Cancer Research(AACR),we have the great pleasure to invite you to attend the New Horizons in Cancer Research Conference:Delivering Cures Through Cancer Science,which will be held from November 2-5,2016,in Shanghai,China.This third conference in this series has,once again,been designed to highlight some of the veryscott a.armstrong jose baselga 2016Cancer Biology & Medicine2016,13,3:0
7非表层热流——构造活动沉积盆地的一个实例显示文摘在现在的表层热流模型中,有重要地球动力学意义的热异常并不总是可以认识的。假象的出现是因为表层热流响应地幔热、地壳放射性、岩浆作用、地壳变形、埋藏和/或剥露以及流体运动,其中任何一种都可能抵销其它的热效应。沉积盆地特别适合于将热流分成不同的组分。以新西兰 Taranaki 盆地为例。与构造活动的东部正好相反,该盆地西部的变形相对较弱(从中新世以来)。虽然穿过 Taranaki 盆地的表层热流值大致一致,但下地壳—上地幔模拟的基底受两个或更多因素中的某个因素的影响而变化。低热产量地壳结合东部地壳加厚产生的热沉降效应能解释基底热流异常。如果没有详细的盆地分析和热模拟的帮助,构造热异常就会被忽视。Phillip A.Armstrong David S.Chapman 韩欣 1998地质科学译丛1998,15,4:0
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