The naturally occurring biphenyl and diphenyl ether-type diarylheptanoids were reviewed with report to the distribution, type of structure, biogenetic pathway and pharmacological activity. 本文对目前已经发现的天然大环二芳基庚烷类化合物在植物中的分布及结构特征、生物合成和药理学研究进展进行了综述。
Genetic mechanisms and controlling factors of terrestrial biogenetic gas in the Quaternary of the Qaidam Basin 柴达木盆地第四系陆相生物气形成机理与控制因素
The bacteria related to the biogenetic karstification have been found in many samples of gypsum. 在所研究的样品中,都检测到这些可发生生物岩溶作用的菌类。
Biogenetic barium distribution from the Upper Ordovician to Lower Silurian in the Yangtze area and its significance to paleoproductivity 扬子地区上奥陶&下志留统生物钡特征及其古生产力意义
, in the two basins. It is suggested that Gonghe basin is also an ideal area for biogenetic gas, the related exploration and studies should be focused on. 共和盆地也是一个寻找生物气的理想地区,应加强对盆地的勘探和研究。
A biogenetic synthesis of prostaglandin E_1 methyl ester 前列腺素E1甲酯的仿生物合成
Meta-property right, derived property right and right of modification of biogenetic resources 生物遗传资源的元所有权、衍生所有权和修饰权
Because biogenetic gas has characteristics with wide distribution, shallow burry, low exploration cost, abundant in resources and convenient for use, countries in the world have been paying attention to biogenetic gas. 由于生物气气田(藏)具有分布广、埋藏浅、勘探开发成本低、资源量大、便于利用等特点,正日益引起世界各国的重视。
The ratios of Al/ ( A1+ Fe+ Mn) ( 0.72 in average, with a maximum of 0.93) are higher than the values of the biogenetic siliceous rocks. Al/(A1+Fe+Mn)的平均值约为0.72,最大值为0.93,大于生物成因型硅质岩沉积物,说明有富Al的陆源物质加入。
The most common biogenetic minerals are carbonates, sulfides and iron oxides. 最普遍的生物成因矿物有碳酸盐、硫化物和铁的氧化物。
The sample analysis showed that the nature gas at this area belonged to methane biogenetic gas. 气样组分分析表明,该区天然气属甲烷型生物成因气。
The features for identifying paleosols mainly include color, granularity, biogenetic structure ( the trace of plant growth), degradation character of original depositional structure, arrangement, boundary character, macro-structure character, mineral and geochemical characters. 在地层序列中古土壤的识别标志主要包括颜色、粒度、生物成因构造(植物生长痕迹)、原生沉积构造退化特征、层次化和边界特征、宏观结构特征、矿物及地球化学特征等。
During the entire period biopoesis appeared many times in different biogenetic placeseither continuously or intermittently. 在这一时期里,在不同的地方,生命连续地或间歇地多次发生。
Biogenetic barium distribution in equatorial northeastern Pacific sediments 赤道东北太平洋沉积物中生物钡的分布特征
I explored the ownership of biogenetic resources and put forward the concepts of meta-property right, property right and rights of modification of genetic resources. 本文探讨了生物遗传资源的元所有权与衍生所有权、生物遗传资源的修饰权概念。
Assessment of Biogenetic Gas Reservoir Potential in Qaidam Basin 柴达木盆地生物气资源潜力评价
The biogenetic theory of petroleum and gas is approaching completion of its historical mission with the gradual exhaustion of oil resources. 天然气和石油的生物成因说将随石油资源逐渐告罄而接近其历史使命的完成。
Some biogenetic gases exist in the natural gases of Yinggehai Basin due to the episodic injection of hydrocarbon fluids. 莺歌海盆地由于具有流体幕式充注的特点,混有生物成因气。
In the marine ecosystem, the dynamic variety of the plankton not only impacts the biomass of fish and invertebrate population but global climatic change. The plankton has an important effect on the cycle of biogenetic elements. 海洋生态系统中,浮游生物的变化不仅影响许多鱼类和无脊椎动物种群的生物量,同时浮游生物在生源要素循环和全球气候变化中也起重要作用;
This paper reviews naturally occurring stilbenes on the biogenetic pathway, type of structure, chemical and physical properties, distribution and pharmacological activity. 本文就天然芪类化合物的生物合成途径、结构类型、理化性质,分布及生物活性作一简要综述。
Tainan gas field is Quaternary biogenetic gas, having characters of shallow buried depth, thicker gas-bearing bed and simple structure, which is of benefit to use seismic data to identify gas reservoir. 台南气田为第四系生物成因气藏,埋藏深度小、气层厚度大、构造简单,有利于地震资料识别油气藏。
Significant accumulation of soil organic matter play an important role in shaping soil characteristics during soil-forming processes in the maritime Antarctic, e.g. in soil acidification, podzolization, formation of metallo-organic compounds and biogenetic minerals. 南极海洋性气候土壤形成过程中具有明显的有机质积累作用,有机质对成土过程和土壤性状产生重要影响,如土壤酸化、有机-金属螯合物的形成和生物成矿现象。
Investigations indicate that biogenetic reefs formed earlier in the south than the north, and the east than the west. Continental shelves and slopes in the north, west and south are favorable areas for biogenetic reef formation. 研究表明,南海盆地生物礁形成具有南早北晚,东早西晚的发育规律,平面上北、西、南陆架和陆坡是生物礁形成的有利地区。
Distribution characteristics and reservoir formation conditions of the biogenetic gas 生物气分布特征和成藏条件
Existing Conditions for Methanobacteria and Biogenetic Gases 甲烷菌的生存条件与生物气
A STUDY ON BIOGENETIC OF CALCAREOUS TUFA& Examplified by the tufa in Jiuzhaigou, Sichuan, and Huangguoshu, Guizhou 石灰华的生物成因研究&以四川九寨沟和贵州黄果树等地石灰华为例
Located at low north latitude, South China Sea has the basic conditions of forming biogenetic reef, such as suitable seawater and climate. The formation and developing trend of biogenetic reefs in South China Sea are constrained by the formation and evolution of the basin. 南海处于赤道以北的低纬度地区,具备生物礁形成的海水和气候等基本条件,生物礁的形成和发育趋势主要受南海盆地形成演化制约。
Biogenetic minerals possess unique morphologies and complex architectures due to the precise regulation in the mineralization by the biomacromolecules in vivo and the growth of organisms. 生物矿物在形成过程中由于受到生物生长和生物大分子的调控作用而具有独特的形貌和复杂的组装超结构。
In addition, the postulated biogenetic routes of three flavonols from E. brevicornum were discussed. ( 1) The genus Epimedium ( Berberidaceae) comprises about 40 species, which have been utilized since ancient as tonic in China. 此外,还对从淫羊藿中分离得到的3个黄酮醇化合物进行了生源关系探讨。(1)淫羊藿属在中国有40余种,为中国传统的滋补药物。