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2012-01-13
封面上是1只漂泊的信天翁自由翱翔在南大洋平静的海面上.信天翁利用海风可以飞得更快、更远.近来,南大洋海风的状况发生了一些变化,这就使得信天翁可以飞得更快并将觅食的范围转移到了更南方,这对信天翁的繁殖非常有帮助,并且也对信天翁保护区具有积极的影响.
A young wandering albatross (Diomedea exulans) glides oothly over the Southern Ocean swell during a calm day. Albatrosses take advantage of ocean winds to trel more efficiently. Recent changes in Southern Ocean wind conditions he allowed wandering albatrosses to trel more rapidly and shift their foraging range southward, with positive influences on reproduction and potential contributions to albatross conservation.
2012-01-20
褐藻,通常被称作巨藻,生长在智利智鲁岛远离海岸的地方（图片拍摄宽度约为1米）.以往,人们忽略了海藻是一种可再生燃料的来源,并且也是可用于生物转化的化合物,这是因为海藻的主要组分是糖,而糖分不容易发酵处理.Wargacki等人设计了一种微生物可以从褐藻中分离出糖分,然后将其转化成低碳、可再生燃料和化学品.
Brown seaweed (Macrocystis pyrifera), monly known as giant kelp, off the coast of Chiloe Island, Chile (image width ~1 meter). Traditionally, seaweed has been ignored as a source of renewable fuel and chemical pounds for bioconversion, because its primary sugar ponent is not easily fermented. Wargacki et al. engineered a microbe to extract sugars from brown seaweed and convert them into low-carbon, renewable fuels and chemicals.
2012-01-27
封面上是一个朊粒（又称朊毒体）的伪色传输电子显微图像（平均直径约为150纳米长,厚度约为10纳米）,这种特殊的传染性蛋白粒子会引起人类和动物发生致命的脑病.虽然可能在大脑疾病中无法探测到跨物种朊粒的传播,但是淋巴组织是非常容易被传染的.当我们在评估公众健康受动物朊毒体以及潜伏性朊病毒疾病带原者影响的同时,考虑到这一研究发现是十分必要的.
False-colored tranission electron micrograph of a prion[erage dimensions: ~150 nanometers (nm) long, 10 nm thick], the infectious protein responsible for deadly brain diseases in animals and humans. Although cross-species prion tranission may show no detectable sign of disease in the brain, lymphoid tissue is much more susceptible to infection. This discovery may be relevant when assessing the public health risks of exposure to animal prions and silent carriers of prion disease.
2012-02-03
封面上是利用计算机制作的物质流模拟图像,生动地描绘出一个宇宙巨洞网络,其中每一个巨洞的直径都约有数千万光年.物质在巨洞交汇的地方聚集,形成一个墙体、丝状体和星系群的宇宙网络.这一模拟图像在2011年度《科学》杂志和美国国家科学基金会（N）主办的国际科学与工程视觉大赛上荣获头奖.文中就相关获奖作品进行了详尽记述.
Computer illustration of streams of matter delineating the work of coic voids, each tens of millions of light years across. Matter accumulates where the voids meet, forming a coic web of walls, filaments, and clusters of galaxies. This illustration was awarded first place in the informational graphics category in the 2011 Science/N International Science& Engineering Visualization Challenge.
（陶陶 编译）