Gut microbial dysbiosis under space environment: a review / 生物工程学报

Unique factors in the space environment can cause dysbiosis of astronauts' gut microbiota and its metabolites, which may exert systematic physiological effects on human body. Recent progress regarding the effect of space flight/simulated space environment (SF/SPE) on the composition of gut microbiota and its metabolites was reviewed in this paper. SF/SPE may cause the increase of invasive pathogenic bacteria and the decrease of beneficial bacteria, aggravating intestinal inflammation and increasing intestinal permeability. SF/SPE may also cause the decrease of beneficial metabolites or the increase of harmful metabolites of gut microbiota, leading to metabolism disorder in vivo, or inducing damage of other systems, thus not beneficial to the health and working efficiency of astronauts. Summarizing the effects of SF/SPE on gut microbiota may provide scientific basis for further researches in this field and the on-orbit health protection of astronauts.

Research on the space environment characteristic and the development of the traditional village in China: Taking Pengzhuang in the northern Jiangsu province as an example

ABSTRACT Traditional villages in the northern Jiangsu province have a local character and history unique artistic style, traditional culture and art Jiangsu indispensable part. How to make achieving sustainable and harmonious for development in rural areas, it is a major problem currently in these places. In this paper, field research and theoretical analysis a multidisciplinary approach, the traditional villages of northern Jiangsu space environment features, including location and spatial pattern are elaborated, analyzed the current conditions of rural development. Then taking Pengzhuang Village in the northern Jiangsu as example, discuss the current situation as well as its architectural characteristics of the space environment group and architectural types. Discussing the necessity of architectural features traditional villages in Northern implementation of conservation is proposed as the main ecological environmental protection and rural development policy space. Beautiful traditional village development should be coordinated development of economic and social environment, especially in the process of our socialist new rural construction, village spatial patterns of Jiangsu for basic research has positive practical value and far-reaching historical significance.