地球科学

Volume 13 of the Handbook continues to promote this interactive approach to the science of the rare earths.

手册的第13 卷继续促进稀有的地球的科学的这种交互式方法。

But several new studies show the biofuel boom is doing exactly the opposite of what its proponents intended: it's dramatically accelerating global warming, imperiling the planet in the name of saving it.

然而，几项新的科学研究发现，生物燃料的泛滥使用与那些推行者的意图恰恰相反：它极度加剧了全球变暖的趋势，威胁而非拯救地球。

I suspect, in honesty, my initial interest was based on a private image of streams of unsuspecting eastbound motorists in the American plains states plunging over the edge of a sudden 4,000-mile-high cliff running between Central America and the North Pole, but gradually my attention did turn in a more scholarly manner to the scientific import of the drawing and the realization that the Earth consisted of discrete layers, ending in the center with a glowing sphere of iron and nickel, which was as hot as the surface of the Sun, according to the caption, and I remember thinking with real wonder:"How do they know that?"

坦白讲，我怀疑自己最初对那幅画的兴趣仅源于脑海中的一幅画，里边一群意志坚定的人驾车东去，要穿越横亘在中美与北极之间的一道深四千公里的悬崖。但后来开始慢慢的以一种学术眼光来研究这幅插图背后的科学含义。并意识到地球是由分离的层组成，最里边是由铁和镍构成的发红的球心。图片旁边的说明文字解释说，这个球心的温度同太阳表面一样高。我仍记得当初十分好奇的想知道，他们是如何得知这一切的。

The author hopes that this work can provide a reference for further research and could do well for reducing the multiplicities of geophysical interpretation for the exploration and practice.

希望给后续的正反演研究工作提供科学的依据和参考，在减少地球物理多解性方面做一些有益的探索和实践。

The FEM, whose process is very *** and is fit to deal with complex boundary condition, is used to simulate the frequency-domain IP. Studying the characters and laws of IP\'parameters under different measuring devices and undulate topography will provide scientific references and basis and reduce the multiplicities of interpretation. It is will be an attempt and exploration.Because of the frequency of the exciting currents is usually between 10-2～102 Hz, the vector A can be seen is not change with the time and the EM effect can be ignored in the low frequency.

双频以及伪随机三频激电法以它特有的轻便、快捷、高效率等特点在有色金属矿躲勘探领域里获得了广泛的应用，运用有限单元法的推导过程简单、适合处理复杂几何外形等特点来对双频以及伪随机三频激电法进行正演数值模拟，分析和研究了激电参数在不同丈量装置、模型参数和起伏地形情况下的特点和规律，为后续的资料解释提供科学的依据和参考，为减少地球物理中的多解性做一些有益的探索和尝试。

National Astronomical Observatories,Chinese Academy of Science,Beijing 100012,China

吉林大学地球探测科学与技术学院，长春 130026；2。中国科学院国家天文台，北京 100012

National Astronomical Observatories,Chinese Academy of Science,Beijing 100012,China

杨冬红1；杨学祥1，21。吉林大学地球探测科学与技术学院，长春 130026；2。中国科学院国家天文台，北京 100012

It is to want to let it become a bigger biosphere originally namely an epitome of the earth that the mankind lives, but because this scientific test manages not to be pooh-poohed and encountered disaster of a series of environment of have not expect, final declaration fails.

原本是想让它成为一个更大的生物圈即人类居住的地球的一个缩影，但是这项科学试验由于治理不善和碰到了一系列未曾料到环境灾难，最后宣告失败。

The deeper that science drills into the substrata of behavior, the harder it becomes to preserve the vanity that we are unique among Earth's creatures.

科学对行为下层的钻研越深，要想捍卫住人类是地球上独特的一种生物的虚荣就越困难。

The deeper that science drills into the substrata of behavior, the harder it becomes to preserve the vanity that we are unique among Earth's creatures.

科学越是钻研到行为模式的深处，就越难保持我们在地球生物中是独一无二的自负。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。