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864 results on '"Hu, Lian"'

117. Analysis on three typical abnormal microstructures of overhead power line suspension clamps

Author

Liu Weike, Zhou Mengbao, Hu Jiarui, Wu Songqi, Cao Xianhui, Xiong Jie, Hu Lian, Xie Yi, Feng Chao, Wang Jun, and Liu Chun

Subjects
Environmental sciences, GE1-350
Abstract

This article lists three typical abnormal microstructures of overhead power line suspension clamps, including inclusion, flake graphite and cementite network. A series of tests including macro check, hardness measurement, composition tests, Energy-dispersive x-ray analysis and metallographic observation have been carried out. The experimental results showed that the causes of abnormal microstructures mainly include: high content of impurities, flake graphite blank and unfulfilled annealing heat treatment. It is suggested to strengthen the supervision on suspension clamps before using, and focus on the quality inspection of metallographic structure and composition.

Published
2020
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128. Study on quality of mixed silage of strong aroma distiller's grains and forage rape.

Author

LIU Wen-wen, HU Lian-qing, HUANG Ju, ZHOU Wan-hai, FENG Rui-zhang, WEI Qin, HUANG Yi-fen, and HUANG Qi

Abstract

The purpose of the experiment was to study the quality of mixed strong aroma distiller's grains and forage rapeseed silage, to determine the optimal addition ratio of strong aroma distiller's grains in forage rapeseed silage. Forage oilseed rape harvested by cutting at the end of flowering period was used as experimental material for silage. Four groups were set up, namely group R (without distillers' grains), group RS-10 (with 10% distillers' grains), group RS-20 (with 20% distillers' grains) and group RS-30 (with 30% distillers' grains). The silage quality was evaluated for 60 d. The results showed that the fermentation quality of forage rapeseed silage was good in all groups, and the sensory evaluation of mixed silage in group RS-10 and group RS-20 was excellent. The CP of distiller's grains supplementation group was significantly higher than that of group R (P<0.05), the content of ADF, Fe and Cu in silage of group RS-20 and group RS-30 were significantly lower than those of group R and group RS-10 (P<0.05), and the pH value of distiller's grains supplementation group was significantly lower than that of group R (P<0.05). The levels of NH3/N and AA in group RS-20 were significantly lower than those in other experimental groups (P<0.05). No butyric acid was detected in silage in all experimental groups. The order of RFV, RFQ and GI2001 was group RS-20 > group RS-30 > group RS-10 > group R. The study indicates that adding strong aroma distiller's grains can improve the silage quality of forage rape, and the fermentation quality of forage rape is better when adding 20% distillers grains. [ABSTRACT FROM AUTHOR]

Published
2023
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140. Methods and Experiments for Collecting Information and Constructing Models of Bottom Layer Contours in Paddy Fields

Author

Tu, Tuanpeng, primary, He, Jie, additional, Luo, Xiwen, additional, Wang, Pei, additional, Hu, Lian, additional, Chen, Gaolong, additional, Tian, Li, additional, Feng, Dawen, additional, Wang, Zhimin, additional, Man, Zhongxian, additional, Li, Weicong, additional, Wei, Zhenghui, additional, Peng, Jingyi, additional, Yi, Yanling, additional, and Wu, Peitian, additional

Published
2022
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143. Compositional variations and the environmental responses of bacterioplankton in the Pengxi River of the Three Gorges Reservoir, China

Author

Wan Chengyan, Zou Xi, Zheng Zhiwei, Shi Fang, Hu Lian, and Yang Qing

Subjects
lcsh:GE1-350, 0106 biological sciences, Biogeochemical cycle, Ecology, 010604 marine biology & hydrobiology, fungi, Bacterioplankton, 010501 environmental sciences, Aquatic Science, three gorges reservoir, 01 natural sciences, lcsh:QH540-549.5, bacterioplankton community, Environmental science, lcsh:Ecology, China, lcsh:Environmental sciences, Ecology, Evolution, Behavior and Systematics, pengxi river, 16s rrna, environmental variables, 0105 earth and related environmental sciences, Three gorges
Abstract

Bacterioplankton communities are closely related to river alterations and biogeochemical processes in freshwater reservoirs. Affected by reservoir regulation and hydrological variation, regulated rivers can create distinctive patterns in bacterioplankton communities. In this study, we conducted 16S rRNA V4 amplicon high-throughput sequencing to investigate compositional changes in the bacterioplankton community and its environmental responses to damming effects in the Pengxi River, the largest tributary on the northern bank of the Three Gorges Reservoir (TGR). The bacterial community was dominated by the phyla Proteobacteria and Actinobacteria, accounting for 51.0% and 13.1% of all sequences, respectively. Distinct differences in the bacterioplankton community composition were observed between the backwater and riverine areas, and the dominant taxa showed clear shifts at the class level between the upper stream and backwater area sites along the Pengxi River. Conductivity, transparency and temperature were considered the major environmental factors driving the bacterioplankton composition variation. Additionally, the functional profiles of the bacterioplankton community corresponded with compositional changes in reservoir regulation by TGR. Therefore, these results provide insights into dam effects on the bacterioplankton community in the Pengxi River, and further research should focus on the potential ecological processes of river regulation by dams or reservoirs.

Published
2020

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