火星土壤与酸性海洋

来源 :海洋地质动态 | 被引量 : 0次 | 上传用户:ggf9988998
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
尽管古塞夫环形山(Gusev Crater)和子午线平原(Meridiani Planum)相距数千公里,但已经证实:来自两地的火星土壤有些成分极其相似,均富含氯和硫磺.最近,高精度的测量结果显示:地球所有已知生命的重要能量载体磷,同样丰富地存在于这些大片的火星土壤中.根据发表在2006年第11期《地质学》(Geology)杂志上的一篇新论文的观点,完全不同的地方却拥有如此类似的土壤,对此惟一的解释是:火星上曾存在面积巨大的酸性海洋.
其他文献
UreG genes have been found in bacteria, fungi and plants but have not yet identified in animals,although a putative UreG-like gene has been documented in sea ur
Autocleavage assay and peptide-based cleavage assay were used to study the substrate specificity of 3CL protease from the severe acute respiratory syndrome coro
本文通过对荣华二采区10
期刊
NKX3.1 is an androgen-regulated prostate-specific homeobox gene that is thought to play an important role in prostate development and cancerogenesis. NKX3.1 act
Using oxidized low-density lipoprotein (LDL)-injured vascular endothelial cells (ECs) as target cells, peptides specifically binding to the injured ECs were scr
G protein-coupled receptor kinases (GRKs) mediate agonist-induced phosphorylation and desensitization of various G protein-coupled receptors (GPCRs). We investi
Tobacco smoking is an important risk factor for the development of severe periodontitis.Recently, we showed that nicotine affected mineralized nodule formation,
Systems biology is a new and rapidly developing research area in which, by quantitatively describing the interaction among all the individual components of a ce
Acylpeptide hydrolase (APH) catalyzes the N-terminal hydrolysis of Nα-acylpeptides to release Nα-acylated amino acids. The crystal structure of recombinant AP
Hyaluronan (HA), a high molecular weight glycosaminoglycan in the extracellular matrix, has been implicated in the promotion of malignant phenotypes, including