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海洋性

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Based on the addition of vinyl magnesium bromide to the chiral non-racemic synthon 2 derived from-1, an enantioselective total synthesis of-3, the antipode of marine alkaloid halitulin 10 steps, overall yield: 5.3% from (R-1 was achieved using aza-Claisen rearrangement as a key step.

取得的主要结果如下:一、从-苯基甘氨醇1出发,通过已知的哌啶手性合成砌块2的加成反应,建立了经aza-Claisen重排反应进行海洋生物碱halitulin手性分子片断的对映体--isohaliclorensin 3不对称合成的路线。

Based on the addition of vinyl magnesium bromide to the chiral non-racemic synthon 2 derived from-1, an enantioselective total synthesis of-3, the antipode of marine alkaloid halitulin 10 steps, overall yield: 5.3% from (R-1 was achieved using aza-Claisen...

取得的主要结果如下:一、从-苯基甘氨醇1出发,通过已知的哌啶手性合成砌块2的加成反应,建立了经aza-Claisen重排反应进行海洋生物碱halitulin手性分子片断的对映体--isohaliclorensin 3不对称合成的路线。

The lab test results show that it performs good theology capability and high antipollution capability as well as the high inhibition and good reservoir protection capability.

实验结果表明,所配制的钻井液具有较好的抗温性和较强的抗污染能力,以及良好的抑制性和油气层保护能力,能够阻止低温下天然气水合物的形成,可以满足海洋深水钻井作业的需要。

The lab test results show that it performs good rheology capability and high antipollution capability as well as the high inhibition and good reservoir protection capability. At the same time, it can inhibit the gas hydrate formation at low temperature effectively to meet the requirement for deepwater drilling.

实验结果表明,所配制的钻井液具有较好的抗温性和较强的抗污染能力,以及良好的抑制性和油气层保护能力,能够阻止低温下天然气水合物的形成,可以满足海洋深水钻井作业的需要。

The correlogram of CEF and OLR and the composite chart of 850hPa wind field while CEF is stronge...

结果表明,夏季海洋大陆赤道缓冲区的对流上升运动(90°E~120°E,5°N~5°S)、澳州大陆冷性高压(10°S~30°S,120°E~155°E)的发展,都影响2~3候以后105°E夏季越赤道气流;澳洲大陆北部的冷性高压,西太平洋副热带高压西端位置西伸或东缩造成的东中国海季风区上升运动的变化,又是南北半球环流同时影响CEF变化的具体表现。

During these years (1997-2000) in the research area of annonaceous acetogenins 5 natural products and a number of chiral-pure analogs of annonaceous acetogenins have been synthesized using sugars as the starting materials. Their high activity and selectivity against cell line of colon tumor and a relationship between activity and configuration have been found too. In the respect of inhibitor of sialidase two new methodologies for the synthesis of chiral-pure 3-deoxy-ulosonic acid using hetero-Diels-Alder reaction or asymmetric propargylation as the key reaction were developed. On the topic of anti-leukemia marine natural product clavulactone a synthetic method based on the free radical cyclization and starting from sugar has been developed. In other title of PKC inhibited agent sphingosine a new synthetic route with SN2' as the key reaction has also been disclosed.

项目期间(1997-2000)在番荔枝内酯方面从糖出发合成了五个天然产物和一批手性纯的类似物,它们对肠癌细胞有很高的活性和选择性,并与构型有关;在唾液酸酶抑制剂方面发展了二类全新手性纯高碳糖的合成方法-杂原子D-A反应或丙炔基不对称加成为关键的反应;抗白血病海洋天然产物群柱虫内酯方面研究了由糖出发和自由基环化反应的合成方法;对PKC 起抑制作用的鞘氨醇方面也开创了新的合成途径-由糖出发并以SN2'反应为关键反应。

The research areas cover genetic and physiological mechanisms of functioning marine organisms; principles of marine biotechnology; genetic and endocrinological mechanisms in marine fish and invertebrates; genetic polymorphism of some marine and fresh water species; biological role of bacterial bioluminescence in the marine environment etc.

其研究范围广泛,覆盖了多个学科,包括功能性海洋生物的遗传和生理机制、海洋生物技术原理、海洋鱼类和无脊椎动物的遗传和内分泌机制、海水和淡水某些生物的遗传多态性、以及海洋环境中发光细菌的生物学作用等。

On the basis of sea resources analysis, some argues of important scientific theory and technological assembly in the exploitation of oceanic resources are discussed in the paper, such as the technological assembly of deep-sea creature resources commercial applications, the study on the hydatogenesis of sea bottom, the study on the reaction between water and rocks, the discriminating and exploitation technology of natural hydrate and solid metallic deposits.

在各种海洋资源可利用性分析的基础上,针对应用开发,提出的海洋资源开发中的重大科学理论与技术集成应引起科学界与管理部门的充分关注,包括深海生物资源商业应用开发的技术集成、海底热液成矿作用理论研究、水-岩反应研究、天然气水合物与固体金属矿产的识别与开采技术集成。

On the basis of sea resources analysis, some argues of important scientific theory and technological assembly in the exploitation of oceanic resources are discussed in the paper, such as the technological assembly of deepsea creature resources commercial applications, the study on the hydatogenesis of sea bottom, the study on the reaction between water and rocks, the discriminating and exploitation technology of natural hydrate and solid metallic deposits.

在各种海洋资源可利用性分析的基础上,针对应用开发,提出的海洋资源开发中的重大科学理论与技术集成应引起科学界与管理部门的充分关注,包括深海生物资源商业应用开发的技术集成、海底热液成矿作用理论研究、水—岩反应研究、天然气水合物与固体金属矿产的识别与开采技术集成。

Furthermore, the article presents small-scale fishing ground indemnificatory allocation framework system. It advised that the marine and inland water fishing grounds which is connected with the land from the marine motor fishing vessels' bottom trawl closed area line, as the exclusive small-scale fishing's special zone for traditional fisher. Moreover let the small-scale special fishing zone being further divided and allocated, each zone establish small-scale fisher association to implement internal management and endow each zone of the attribute of usufructuary right which was the power of exclusive utilization, long effectiveness inheritable and transferable.

本文在对比分析了捕捞投入要素分配、渔获量分配和渔场分配三种分配方式的基础上,提出了小型渔业渔场保障性分配框架体系,建议将海洋机动渔船底拖网禁渔区线向陆地一侧的海洋和内陆水域渔场作为小型渔业传统渔民的专用渔场,再将小型渔业专用渔场在行政区之间进一步划分和分配,每个渔场建立相应的小型渔业渔民协会进行渔场使用的内部管理,并赋予小型渔业渔场使用权排他性的、长效性可继承的、可流转的用益物权属性。

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