We have extracted DNA from the inclusion of a dinosaur egg fossil from the Late Cretaceous in Xixia Henan,China, DNA fragments are isolated from the floccus in the cavity of the egg fossil,and confirmed by the method of random primer isotope labelling.

本文從河南省西峽晚白堊世的一枚保存方式特殊的恐龍蛋化石中提取DNA，經(jīng)過￣32P同位素標(biāo)記和電泳分析欧插网免费看的视频，發(fā)現(xiàn)在蛋內(nèi)腔的絮狀物樣品中確有DNA片段存在。

There are three categories of maturity indicators of organic matter in current petroleum industry to evaluate the degree of thermal evolution for source rocks, including: 1 optical indicators, i.e., vitrinite reflectance, bitumen reflectance, sporopollen color and thermal alteration index, conodont color alteration index, and reflectance of fossil fragments; 2 chemical indicators, i.e., the maximum temperature in pyrolysis of organic matter, methyl phenanthrene indicator, the atomic ratio of H/C, carbon isotope indicator, and biomarker indicators; 3 indicators of spectroscopy, i.e., the free radical concentration of kerogen, the average structural scale of aromatic nucleus of kerogen, and the laser-Raman spectrum of organic carbon.

摘 要：當(dāng)前常用的有機質(zhì)成熟度指標(biāo)包括3大類：1 光學(xué)指標(biāo)国产露出网站，包括鏡質(zhì)體反射率成在线人黄页免费视频、瀝青反射率、孢粉顏色欧美一级视频网站、熱變指數(shù)(thermal alteration index亚洲日韩在线视频， TAI)、牙形石色變指數(shù)(color alteration index国产91九色视频， CAI)和生物碎屑反射率三级黄色一级视频,黄色一级视频；2 化學(xué)指標(biāo)，包括有機質(zhì)最大熱解峰溫度久久r久久、甲基菲指數(shù)(methyl phenanthrene indicator色玖二代， MPI)、H/C原子比值影音先锋每日最新AV资源久久、碳同位素指標(biāo)和生物標(biāo)志物指標(biāo)亚洲色欲综合网页在线观看；3 譜學(xué)指標(biāo)，包括干酪根的自由基濃度www.自拍偷拍.com、干酪根芳核平均結(jié)構(gòu)尺寸和有機碳激光拉曼光譜欧美一卡二卡视频在线观看。

The Nature article came only a week after an even more surprising report in the competing journal Science. U.S. and Indonesian researchers said they had redated fossil skull fragments found at two sites on the island of Java.

就在《自然》這篇文章出版后的一星期，美國和印尼的研究人員在其競爭對手《科學(xué)》雜志上拋出一個更令人意外的報告日韩精品15P，他們重新為在爪哇島兩個地區(qū)找到的頭骨化石殘片做了年份鑒定黄片免费2021。

fossil fragments：龍骨

fossil flax 石棉 | fossil fragments 龍骨 | fossil marble products 化石大理石產(chǎn)品