日本对虾卵巢促熟技术研究

利用卵巢未发育的海捕日本对虾Ｐｅｎａｅｕｓｊａｐｏｎｉｃｕｓ，采用综合措施，进行切除眼柄前、后两个阶段培育，促进卵巢发育和成熟。结果：切除眼柄前分别在ｔ＝１５．０—１８℃和２０．０─２３．０℃经１７ｄ左右的培育，卵巢发育率为６２％—６５％；切除眼柄后在ｔ＝２５．０—２５．５℃经４—５ｄ的培育，亲虾成批成熟和产卵，成熟率为９６％。先后两批共育出了３０２０万尾苗种。     

用LHRH-A2埋植法诱导池养鲻鱼卵母细胞发育成熟的试验

将含LHRH－A2的药物颗粒埋植入池养人工繁殖鲻鱼Mugil cephalus Linnaeus雌鱼体内，以诱导其性腺发育成熟，试验为期81d。发现用LHRH－A2埋植的试验组鱼的卵母细胞直径超过500μm以上，达到成熟的个体比率为30％，而空白对照组鱼达到成熟的个体比率为0％。试验结果表明，采用激素埋植的方法，可促进鲻鱼卵母细胞的发育。     

表征海相烃源岩有机质成熟度的若干重要指标的对比与研究

对目前表征海相烃源岩有机质成熟度的几个重要指标（镜质体反射率,沥青反射率,镜状体反射率、动物有机碎屑反射率及牙形刺色变指数等）进行了探讨与对比,并在总结它们各自优缺点的基础上,提出了选择海相烃源岩有机质成熟度评价指标的原则,进而提出牙形刺相对荧光强度（Ｉ５４６）是表征海相烃源岩有机质成熟度的良好指标,其具有较广泛的适用性。     

Influencing factors and significance of organic and inorganic nitrogen isotopic compositions in lacustrine sedimentary rocks

Comprehensive nitrogen biogeochemical cycle has been reconstructed for representative lacustrine organic-rich sedimentary rock in China, namely the Triassic Yanchang Formation (YF, 199–230 Ma) in Ordos and the Cretaceous Qingshankou Formation (QF, 86–92 Ma) in Songliao basins, by evaluating the organic and inorganic nitrogen isotopic compositions rather than only organic or bulk nitrogen isotopic compositions. The results indicate that the nitrogen isotope values of bulk rock (δ¹⁵N_bulk) in the non-metamorphic stage are significantly different from that of kerogen, which challenge the conceptual framework of sedimentary nitrogen isotope interpretation. The δ¹⁵N_bulk from the YF and QF were lower than their respective the nitrogen isotope values of kerogen (δ¹⁵N_ker), with offsets up to ～5.1‰, which have the inverse relationship for the metamorphosed rock. Thermal evolution did not significantly modify the δ¹⁵N of bulk rock and kerogen. The δ¹⁵N of sediments from the YF (δ¹⁵N_bulk, 1.6‰–5.6‰) were lower than that of rock from the QF (δ¹⁵N_bulk, 10.2‰–15.3‰). The nitrogen isotope values of silicate incorporated nitrogen (δ¹⁵N_sil) were slightly lower than those of the δ¹⁵N_ker in the YF and obviously lower for the QF. The fact that different nitrogen cycles occur in the YF and QF due to the different depositional redox conditions leads to different isotopic results. The YF water environment dominated by oxic conditions is not conducive to the occurrence of denitrification and anammox, and no abundant N₂ loss leads to the relatively light δ¹⁵N_bulk. In the stratified water for the QF, redox transition zone promotes denitrification and anammox, resulting in the heavy δ¹⁵N_bulk of rock and promotes the DNRA, resulting in heavy δ¹⁵N_ker and low δ¹⁵N_sil.     

应用EASY%Ro法模拟柴达木盆地西部烃源岩成熟史

在系统介绍EASY %Ro法的基础上,以油 14井为实例说明了应用该方法计算成熟史的过程,然后对柴达木盆地西部 31口重点探井中的烃源岩的成熟度演化史进行了模拟。在平面上作出了下干柴沟组下段 (E₃ 1)至上油砂山组 (N₂ 2 ) 5套烃源岩的成熟度等值线图,并针对这些图件详细论述了各组烃源岩的成熟度演化史。对该区油气成藏研究和油气勘探具有一定意义.