With the rapid development of the petroleum industry and oil spill occurredfrequently in recent years, marine oil pollution is serious. Oil pollution from terrestrialsources is an important source of marine oil pollut...With the rapid development of the petroleum industry and oil spill occurredfrequently in recent years, marine oil pollution is serious. Oil pollution from terrestrialsources is an important source of marine oil pollution. In China, oil pollution fromterrestrial sources accounted for more than 80% of the total marine pollutants. Wetlandhas great ecological and environmental value, and researches found that wetland hasthe function of purifying oil pollutants. Beitang Estuary in Tianjin Binhai New Area is amajor fishery port, and also the main sewage outfall. In recent years, with the increaseof oil pollution from terrestrial sources, water quality in Beitang River is deteriorating.The Beitang Estuary has a large area of natural Spartina alterniflora wetland, whichmay effectively remove oil pollution. Environmental investigation was carried out on thewharf, channel and coastal zone near Beitang Estuary. The results showed that theeutrophication in Beitang Estuary is serious, and the water quality is inferior to theworse than the fourth class of sea water quality. Inorganic nitrogen, active phosphateand petroleum hydrocarbons are the main pollutants. Reed, Spartina alterniflora andSeepweed were the dominant species in the Beitang Estuary, and petroleumhydrocarbons were detected in the three plants. It showed that the Beitang Estuary waspolluted by petroleum hydrocarbons, and the three kinds of plants have the ability toabsorb petroleum hydrocarbons. Survey results showed that, whether in the surfaceseawater or sediment, the oil content near the wharf was higher than the channel; thepetroleum hydrocarbon content in the channel was higher than the coastal zone. Theroots, stems and leaves of Spartina alterniflora can intercept oil pollution from terrestrialsources. In addition to absorbing petroleum hydrocarbons, Spartina alterniflora alsoprovides a good habitat for microorganisms,to accelerate microbial degradation ofpetroleum hydrocarbon. Spartina alterniflora wetland has the obvious effect forreducing terrigenous oil pollutants.展开更多
目的:从肠道菌群角度分析越桔提取物对HepG2肿瘤小鼠肠道菌群产生的影响。方法:建立HepG2肿瘤小鼠模型,将12只造模成功的小鼠分为模型组和剂量组,另选6只正常小鼠作为对照组。剂量组灌胃越桔提取物,其他组灌胃生理盐水,21天后收集对照...目的:从肠道菌群角度分析越桔提取物对HepG2肿瘤小鼠肠道菌群产生的影响。方法:建立HepG2肿瘤小鼠模型,将12只造模成功的小鼠分为模型组和剂量组,另选6只正常小鼠作为对照组。剂量组灌胃越桔提取物,其他组灌胃生理盐水,21天后收集对照组、模型组和剂量组小鼠粪便,经过16 s rRNA检测,分析各组alpha多样性和不同分类水平上各组的微生物结构。研究HepG2肿瘤小鼠摄入越桔提取物后肠道菌群变化。结果:剂量组Observed species、Chao、Ace和Shannon指数高于模型组和对照组,Simpson指数低于模型组和对照组;Proteobacteria菌群、Enterobacteriaceae菌群和Ruminococcus菌群在剂量组显著低于模型组。结论:表明灌胃越桔提取物可以改变致病小鼠菌群丰富度,增加有效菌群的多样性,并降低致病机体中丰富度高的菌群。越桔提取物为调节HepG2肿瘤小鼠肠道微生物的组成起到积极地作用。展开更多
基金supported by the Project of Tianjin with Spill Oil Accident from Penglai Oil field 19-3 Compensation (No. 19-3BC2014-05)Tianjin Municipal Science and Technology Planning Project (15ZCZDSF00620, 15JCYBJC23200)
文摘With the rapid development of the petroleum industry and oil spill occurredfrequently in recent years, marine oil pollution is serious. Oil pollution from terrestrialsources is an important source of marine oil pollution. In China, oil pollution fromterrestrial sources accounted for more than 80% of the total marine pollutants. Wetlandhas great ecological and environmental value, and researches found that wetland hasthe function of purifying oil pollutants. Beitang Estuary in Tianjin Binhai New Area is amajor fishery port, and also the main sewage outfall. In recent years, with the increaseof oil pollution from terrestrial sources, water quality in Beitang River is deteriorating.The Beitang Estuary has a large area of natural Spartina alterniflora wetland, whichmay effectively remove oil pollution. Environmental investigation was carried out on thewharf, channel and coastal zone near Beitang Estuary. The results showed that theeutrophication in Beitang Estuary is serious, and the water quality is inferior to theworse than the fourth class of sea water quality. Inorganic nitrogen, active phosphateand petroleum hydrocarbons are the main pollutants. Reed, Spartina alterniflora andSeepweed were the dominant species in the Beitang Estuary, and petroleumhydrocarbons were detected in the three plants. It showed that the Beitang Estuary waspolluted by petroleum hydrocarbons, and the three kinds of plants have the ability toabsorb petroleum hydrocarbons. Survey results showed that, whether in the surfaceseawater or sediment, the oil content near the wharf was higher than the channel; thepetroleum hydrocarbon content in the channel was higher than the coastal zone. Theroots, stems and leaves of Spartina alterniflora can intercept oil pollution from terrestrialsources. In addition to absorbing petroleum hydrocarbons, Spartina alterniflora alsoprovides a good habitat for microorganisms,to accelerate microbial degradation ofpetroleum hydrocarbon. Spartina alterniflora wetland has the obvious effect forreducing terrigenous oil pollutants.
文摘目的:从肠道菌群角度分析越桔提取物对HepG2肿瘤小鼠肠道菌群产生的影响。方法:建立HepG2肿瘤小鼠模型,将12只造模成功的小鼠分为模型组和剂量组,另选6只正常小鼠作为对照组。剂量组灌胃越桔提取物,其他组灌胃生理盐水,21天后收集对照组、模型组和剂量组小鼠粪便,经过16 s rRNA检测,分析各组alpha多样性和不同分类水平上各组的微生物结构。研究HepG2肿瘤小鼠摄入越桔提取物后肠道菌群变化。结果:剂量组Observed species、Chao、Ace和Shannon指数高于模型组和对照组,Simpson指数低于模型组和对照组;Proteobacteria菌群、Enterobacteriaceae菌群和Ruminococcus菌群在剂量组显著低于模型组。结论:表明灌胃越桔提取物可以改变致病小鼠菌群丰富度,增加有效菌群的多样性,并降低致病机体中丰富度高的菌群。越桔提取物为调节HepG2肿瘤小鼠肠道微生物的组成起到积极地作用。
