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RISS 인기검색어
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- 저자 : Manglai (검색결과 3 건)
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Tuning wettability by controlling the layer charge and structure of organo-vermiculites
Fan Ding,Manglai Gao,Jie Wang,Tao Shen,Weili Zang 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.57 No.-
Tunable wettability was studied on series of organo-vermiculites with different layer charge. Reduced-charge vermiculites (RCVts) were fabricated via one-step heating method, which constituted a high-middle charge system. Organo-vermiculites were prepared by four cationic surfactants and characterized by XRD, FT-IR and TG. The results indicated that organo monolayer has been formed between layers and resulted in a water repelling surface. The wettability of the organo-vermiculites was monitored by capillary rise experiments. Among those factors, layer charge took a decisive position in wettability alteration. These facts give an inspiration for regulating wettability of the high charge mineral surface.
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mtDNA Diversity and Origin of Chinese Mongolian Horses
Li, Jinlian,Shi, Youfei,Fan, Caiyun,Manglai, Dugarjaviin Asian Australasian Association of Animal Productio 2008 Animal Bioscience Vol.21 No.12
In order to learn the origin of the Chinese Mongolian horse, we analyzed polymorphisms within the mtDNA D-loop variable region in 305 horses of 6 types of 3 different breeds, including one imported breed, one cultivated breed and 4 types of one local breed. We detected 13 different haplotypes, and subsequent sequence analysis showed that all 6 horse types were genetically diverse. By constructing a cladogram of mtDNA D-loop sequences from the 6 horse types along with homologous sequences from several other horse types obtained from GenBank, we showed that Chinese Mongolian horses have a close genetic relationship with other horse types from Mongolia. We also speculate that several Chinese Mongolian horses descended from Przewalskii horse. Additionally, the 13 haplotypes were dispersed throughout the cladogram, suggesting that Chinese Mongolian horses likely originated from multiple female ancestors. A phylogenetic map of the 6 horse types showed that the genetic relationship between the local Wuzhumuqin and Wushen types were the closest. The Xinihe and Baerhu were also closely related to each other, and slightly more distantly related to the cultivated Sanhe breed. All five of the local Chinese horse types had a much more distant relationship with the imported Thoroughbred breed.
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Zhao, Yiping,Li, Bei,Bai, Dongyi,Huang, Jinlong,Shiraigo, Wunierfu,Yang, Lihua,Zhao, Qinan,Ren, Xiujuan,Wu, Jing,Bao, Wuyundalai,Dugarjaviin, Manglai Asian Australasian Association of Animal Productio 2016 Animal Bioscience Vol.29 No.9
The hindgut of horses is an anaerobic fermentative chamber for a complex and dynamic microbial population, which plays a critical role in health and energy requirements. Research on the gut microbiota of Mongolian horses has not been reported until now as far as we know. Mongolian horse is a major local breed in China. We performed high-throughput sequencing of the 16S rRNA genes V4 hypervariable regions from gut fecal material to characterize the gut microbiota of Mongolian horses and compare them to the microbiota in Thoroughbred horses. Fourteen Mongolian and 19 Thoroughbred horses were used in the study. A total of 593,678 sequence reads were obtained from 33 samples analyzed, which were found to belong to 16 phyla and 75 genera. The bacterial community compositions were similar for the two breeds. Firmicutes (56% in Mongolian horses and 53% in Thoroughbred horses) and Bacteroidetes (33% and 32% respectively) were the most abundant and predominant phyla followed by Spirochaete, Verrucomicrobia, Proteobacteria, and Fibrobacteres. Of these 16 phyla, five (Synergistetes, Planctomycetes, Proteobacteria, TM7, and Chloroflexi) were significantly different (p<0.05) between the two breeds. At the genus level, Treponema was the most abundant genus (43% in Mongolian horses vs 29% in Thoroughbred horses), followed by Ruminococcus, Roseburia, Pseudobutyrivibrio, and Anaeroplasma, which were detected in higher distribution proportion in Mongolian horses than in Thoroughbred horses. In contrast, Oscillibacter, Fibrobacter, Methanocorpusculum, and Succinivibrio levels were lower in Mongolian horses. Among 75 genera, 30 genera were significantly different (p<0.05) between the two breeds. We found that the environment was one of very important factors that influenced horse gut microbiota. These findings provide novel information about the gut microbiota of Mongolian horses and a foundation for future investigations of gut bacterial factors that may influence the development and progression of gastrointestinal disease in horses.
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