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According to the principle of strontium isotope stratigraphy, we attempt to determine the age of the boundaries for Campanian/Santonian and Maastrichtian/Campanian by 87Sr/86Sr ratios for Gamba section in southern Tibet.
在与国际上同期海相地层锶同位素演化曲线对比的基础上,研究了晚白垩世海相碳酸盐锶同位素组成与主要地质事件的关系;在将本研究锶同位素数据融入到全球中新代海水锶同位素曲线的基础上,综合作出了中新生代海平面变化和锶同位素对照曲线,讨论了全球风化速率,造山事件,气候,海平面变化以及灾变性事件对中新生代海水锶同位素的控制作用;根据锶同位素地层学原理,本研究尝试将碳酸盐锶同位素组成用于海相地层定年上,利用已有的全球海水87Sr/86Sr值-年龄数据库和测试的藏南晚白垩海相碳酸盐的87Sr/86Sr值,确定了岗巴剖面Campanian/Santonian和Maastrichtian/Campanian阶界线,标定了广泛分布于白垩纪的厚壳蛤化石的年龄;本研究还将这些方法推广到了塔里木盆地井下奥陶纪地层的年龄标定,确定了中/上,中/下奥陶统界线,从锶同位素角度获得了古岩溶作用证据,显示锶同位素地层学在解决海相地层对比,年龄确定及在岩溶型油气储层研究中的潜在价值和良好应用前景。
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The Lower/Upper Cretaceous boundary in Songliao Basin is,therefore,between the Quantou and Denglouku formations,instead of between the Quantou and Qingshankou formations.2.The dark mudstones and shales in the Member 1 of Qingshankou Formation are of high organic carbon and low diasteranes contents.Organic geochemical characters are illustrated by biomarkers of 28,30-bisnorhopane and gammacerane,and positive excursion of kerogen isotopes.It is suggested that the dark mudstones and shales in the Member 1 of Qingshankou Formation are the products of lake anoxic period.It corresponds to the oceanic anoxic event at Cenomanian-Turonian boundary in Cretaceous.3.Based on the study of biostratigraphy,chronostratigraphy,magnetostratigraphy and event stratigraphy,a correlation of the lacustrine sequence to marine standard has been proposed,i.e.,the Quantou Formation corresponds to Cenomanian stage,Qingshankou Formation correlates to Later Cenomanian-Early Turonian,Yaojia Formation to Later Turonian-Coniacian,Nenjiang Formation to Santonian-Campanian.Sifangtai and Minshui Formations to Maastrichtian. 4.Analysis of lithology,lithofacies and microfossils of Cretaceous in Songliao Basin, shows that shore and shallow lake facies yield the most abundant microfossil groups,and the predelta and deltaic distributary plain facies rich in fossils as well.In the shore and shallow lake areas during the high level periods(such as Qingshankou and Nenjiang sedimentary periods),the lacustrine biota are of high diversity and high abundance.
因此,松辽盆地上、下白垩统的界线应在泉头组的底界,即泉头组与登娄库组之间,而不是泉头组的顶界。2、青山口组一段黑色泥岩、页岩具有有机碳含量高、重排甾烷含量低,生物标志物出现28,30—双降藿烷和伽马蜡烷,干酷根碳同位素具有正向偏移等有机地球化学特征,表征为青山口组一段黑色页岩、油页岩是古湖泊缺氧事件的产物,它对应于白垩纪古海洋Cenomanian—Turonian期界线附近缺氧事件,二者具同步性。3、通过生物地层学、年代地层学、磁性地层学和事件地层学研究,认为泉头阶大体相当于Cenomanian阶,青山口阶相当于晚Cenomanian—早Turonian阶,姚家阶对应于晚Turonian—Coniacian阶,嫩江阶对应于Santonian—Campanian阶,四方台阶和明水阶相当于Maastrichtian阶。4、通过对松辽盆地上白垩统的岩性、岩相及微体化石分析,认为滨浅湖相是微体生物群最为发育的相带,其次为三角洲前缘相和三角洲分流平原相。
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Taking the Late Mesozoic basic-intermediate dike swarms from this area as the main object, we have studied their Petrology, Geochemistry and Isotopic Chronology, and discussed the property of their magmatic source, tectonic setting and origin as well. The significant conclusions acquired are as follows: 1, The Late Mesozoic dike from the coastland of Fujian Province appears as clusters, intruding into the Late Mesozoic granite or volcanic rocks, and the lithologies are diabase, hornblende diabase and quartz-diorite etc, mainly diabase. The mode of their occurrence is mainly precipitous and they tend towards NE, approximately EW or NNE. The dike swarms did not suffer metamorphose or distortion, holding the stress state as the dike formed.
本论文以该地区晚中生代中–基性岩墙群为主要对象,研究了它们的岩石学、地球化学及同位素年代学等,对岩浆源区的性质、构造环境、成因等进行了讨论,获得以下重要认识: 1、福建沿海地区晚中生代中–基性岩墙成群产出,侵入到晚中生代花岗岩及火山岩中,岩性有辉绿岩、角闪辉绿岩和石英闪长岩等,以辉绿岩类为主,产状较陡,北东、近东西及北北东走向,大多未发生变质或变形,保持了岩墙形成时的应力状态。
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The trend of doubting ancient history thought which arising in early 20th century cut away and rebated half of Chinese history,the Axial Age theory resumed the validity of the various scholars in
追溯民初以来学者早已开始的东西文明比较,更多关注的是在古埃及、古巴比伦、古印度和中华文明的第二阶段上。20世纪初兴起的疑古思潮将中国古史&砍掉一半&、&打个对折&,&轴心时代&理论则恢复了晚周诸子学的合法性,但它同时继续漠视三代王官学,而三代王官学正是晚周诸子学乃至整个中华文化的源头。
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The trend of doubting ancient history thought which arising in early 20th century cut away and rebated half of Chinese history,the Axial Age theory resumed the validity of the various scholars in later Zhou Dynasty,and went on disregarding the government and official scholars of the San Dai Dynasty,hut the government and official scholars of San Dai Dynasty just is the headstream of the various scholars in later Zhou Dynasty even of the whole Chinese civilization.
追溯民初以来学者早已开始的东西文明比较,更多关注的是在古埃及、古巴比伦、古印度和中华文明的第二阶段上。20世纪初兴起的疑古思潮将中国古史'砍掉半'、'打个对折','轴心时代'理论则恢复了晚周诸子学的合法性,但它同时继续漠视三代王官学,而三代王官学正是晚周诸子学乃至整个中华文化的源头。
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The trend of doubting ancient history thought which arising in early 20th century cut away and rebated half of Chinese history,the Axial Age theory resumed the validity of the various scholars in later Zhou Dynasty,and went on disregarding the government and official scholars of the San Dai Dynasty,but the government and official scholars of San Dai Dynasty just is the headstream of the various scholars in later Zhou Dynasty even of the whole Chinese ci,vilization.
追溯民初以来学者早已开始的东西文明比较,更多关注的是在古埃及、古巴比伦、古印度和中华文明的第二阶段上。20世纪初兴起的疑古思潮将中国古史&砍掉一半&、&打个对折&,&轴心时代&理论则恢复了晚周诸子学的合法性,但它同时继续漠视三代王官学,而三代王官学正是晚周诸子学乃至整个中华文化的源头。
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The trend of doubting ancient history thought which arising in early 20th century cut away and rebated half of Chinese history,the Axial Age theory resumed the validity of the various scholars in later Zhou Dynasty,and went on disregarding the government and official scholars of the San Dai Dynasty,but the government and official scholars of San Dai Dynasty just is the headstream of the various scholars in later Zhou Dynasty even of the whole Chinese ci,vilization.
追溯民初以来学者早已开始的东西文明比较,更多关注的是在古埃及、古巴比伦、古印度和中华文明的第二阶段上。20世纪初兴起的疑古思潮将中国古史'砍掉半'、'打个对折','轴心时代'理论则恢复了晚周诸子学的合法性,但它同时继续漠视三代王官学,而三代王官学正是晚周诸子学乃至整个中华文化的源头。
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The trend of doubting ancient history thought which arising in early 20th century cut away and rebated half of Chinese history,the Axial Age theory resumed the validity of the various scholars in later Zhou Dynasty,and went on disregarding the government and official scholars of the San Dai Dynasty,hut the government and official scholars of San Dai Dynasty just is the headstream of the various scholars in later Zhou Dynasty even of the whole Chinese civilization.
追溯民初以来学者早已开始的东西文明比较,更多关注的是在古埃及、古巴比伦、古印度和中华文明的第二阶段上。20世纪初兴起的疑古思潮将中国古史&砍掉一半&、&打个对折&,&轴心时代&理论则恢复了晚周诸子学的合法性,但它同时 ssbbww。 com 继续漠视三代王官学,而三代王官学正是晚周诸子学乃至整个中华文化的源头。&轴心时代&理论与中华文明对接中的偏差,其影响将是流与源的颠倒、反题与正题的倒置和各期学术史的逐次错位。
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The latedischarges decreased from 9.29 ± 0.97 to 6.71 ± 0.68 with the A-fiberconditioning stimulus increasing from 1 to 5 (n〓8, P〓0. 05).(7) The intervalbetween the conditioning stimulus and test stimulus (C-T interval) wasincreasing, the inhibition tended to plateau off. At shorter time intervalsthe inhibition became more effective. When C-T interval was limited in 50ms,the inhibitory effects was the strongest, here, the late discharges reducedfrom 12.57±1.21to 2.29±0.42 (n=11, P<0. 01).(8) Behavior research showedthat the rat model of snake venom exhibited neuropathic pain with heathyperalgesia, cold and mechanical allodynia, which corresponding to the acuteelectrophysiological findings.
此时轻刷WDR神经元的感受野不能引起其活动改变,但伤害性齿镊夹捏仍可引起WDR神经元放电增多;〓5〓晚成分放电的潜伏期缩短,即宁静期的时程变短,由给蛇毒前的118.83〓3.67ms降至50.72〓1.36ms〓n〓32,P〓0.01〓;〓6〓在正常动物,如果预先给予只激活A纤维的弱条件电刺激〓mA,100μs〓可抑制随后的伤害性检验刺激所诱发的WDR神经元的晚成分放电,当条件刺激个数从1增加至5时,每次伤害性检验刺激所诱发的晚成分放电数从9.29〓0.97个降至6.71〓0.68个〓n〓8,P〓0.05〓;〓7〓固定条件刺激数为1个,当条件刺激与检验刺激之间的间隔增大时,A纤维条件刺激对WDR神经元晚成分放电的抑制作用逐渐减弱,当条件刺激与检验刺激之间的间隔在50 ms以内时,抑制效应最为显著,此时,晚成分放电数由正常时的12.57〓1.21个降至2.29〓0.42个〓n〓11,P〓0.01〓;〓8〓与急性研究中的WDR神经元电活动的变化结果相匹配,利用蛇毒制备的大鼠模型在行为学上表现为热痛觉过敏、冷觉的痛性感觉异常及机械痛觉过敏等慢性痛症状。
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At the same time, most WDR neurons failedto respond to the light brush applied to the receptive fields, but they couldbe intensively excited by the noxious pinch.(5) The latency of the latedischarges was shortened from 118.83 ± 3.67ms to 50.72 ± 1.36ms (n〓32, P〓0. 01).(6) Preceding graded number of A〓fiber conditioning inputs (〓mA, 100 μs) delayed the C-activity evoked by the following nociceptive teststimulus activating both A- and C-fiber applied to the sciatic nerve. The latedischarges decreased from 9.29 ± 0.97 to 6.71 ± 0.68 with the A-fiberconditioning stimulus increasing from 1 to 5 (n〓8, P〓0. 05).(7) The intervalbetween the conditioning stimulus and test stimulus (C-T interval) wasincreasing, the inhibition tended to plateau off. At shorter time intervalsthe inhibition became more effective. When C-T interval was limited in 50ms,the inhibitory effects was the strongest, here, the late discharges reducedfrom 12.57±1.21to 2.29±0.42 (n=11, P<0. 01).(8) Behavior research showedthat the rat model of snake venom exhibited neuropathic pain with heathyperalgesia, cold and mechanical allodynia, which corresponding to the acuteelectrophysiological findings.
此时轻刷WDR神经元的感受野不能引起其活动改变,但伤害性齿镊夹捏仍可引起WDR神经元放电增多;〓5〓晚成分放电的潜伏期缩短,即宁静期的时程变短,由给蛇毒前的118.83〓3.67ms降至50.72〓1.36ms〓n〓32,P〓0.01〓;〓6〓在正常动物,如果预先给予只激活A纤维的弱条件电刺激〓mA,100μs〓可抑制随后的伤害性检验刺激所诱发的WDR神经元的晚成分放电,当条件刺激个数从1增加至5时,每次伤害性检验刺激所诱发的晚成分放电数从9.29〓0.97个降至6.71〓0.68个〓n〓8,P〓0.05〓;〓7〓固定条件刺激数为1个,当条件刺激与检验刺激之间的间隔增大时,A纤维条件刺激对WDR神经元晚成分放电的抑制作用逐渐减弱,当条件刺激与检验刺激之间的间隔在50 ms以内时,抑制效应最为显著,此时,晚成分放电数由正常时的12.57〓1.21个降至2.29〓0.42个〓n〓11,P〓0.01〓;〓8〓与急性研究中的WDR神经元电活动的变化结果相匹配,利用蛇毒制备的大鼠模型在行为学上表现为热痛觉过敏、冷觉的痛性感觉异常及机械痛觉过敏等慢性痛症状。
- 更多网络解释与晚学相关的网络解释 [注:此内容来源于网络,仅供参考]
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banknote:银 行 券
当他于6月19日清晨到达英国福克斯顿(Folkstone)的岸边时,6月21日晚11点,威灵顿勋爵的信使亨利.波西(HenryPercy)终于到达了伦敦,消息是森(WilliamPaterson)为首的银行家向国王提出一个从荷兰学来的新生事物:建立一个私行发行国家认可的银行券(BankNote).
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Ergonomics:人类工程学
人类工程学(Ergonomics)在我国起步较晚,目前该学科除普遍称谓人类工程学外,常见的名称还有:人体工学、人体工效学、工程心理学、宜人学、人的因素等. 随着社会的进步、科技的发展、学科的交叉,其内涵和外延都在变化,因而其定义和名称也将发生变化.
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night owl:夜猫子
学习起来才能事半功倍,不过第二天精神就不会太好啦!所以还是不要坚持学得太晚的(stick to your studies). 当然省点油灯钱也算是一个原因吧,所以老美在描述一个夜猫子(night owl)时总是说他们burn the middle night oil.
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page break:[计]分页符
opsimathy 晚学 接受教育晚 | page break [计]分页符 | interstage amplifier 中间[级间]放大器
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presupposition:预设
"预设"(presupposition)确实是个极为重要、但是国内1.般学术界、尤其哲学界迄今罕有研究的课题...即便是在国外\较多的研究也都是在逻辑学、语义学和语用学领域进行的\而且即使在语言学界\它也越来越少有受到特别关注了\"在更晚近的态度中\人们已更少地表现出关于对这些现象的逻辑分析的技术性讨论类型的兴趣
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serosity:浆液
serology 血清学 | serosity 浆液 | serotinous 晚熟的
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thanatology:死亡学
就拿美国来说,"死亡学"(Thanatology)之兴起,也是晚近三四十年的事. 开山祖是原籍瑞士的库布勒?罗斯(Elizabeth Kubler?Ross)女士. 20世纪60年代,她在芝加哥大学授课,倡导死亡学研究,因为她认为一般医生只以救人命为天职,
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neopallium:新大脑皮质 新脑皮 新皮层 新皮质
Neopaleozoic 晚古生代 | neopallium 新大脑皮质; 新脑皮; 新皮层; 新皮质 | neopalynology 新孢粉学
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opsimathy:晚学 接受教育晚
instantaneous deviation indicator 瞬时偏移指示器 | opsimathy 晚学 接受教育晚 | page break [计]分页符
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gene pool:基因池
虽然比较晚才知道,关于严谨收集这个性状在 stackebrandt基因池(gene pool)里其实是有着母亲的遗传的. 他认为昆虫学是可以发展的事业,直至1960年代末期,由于随着大学新导入微生物学教授和微生物学学门,令他的生涯产生了不可预知的扭转.