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Copyright of Journal of Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The experiment was to optimize the extraction process of Fructus mori polysaccharideie, studied its antioxidant activity. The effect of temperature, material to liquid ratio, power and time on yield of Fructus mori polysaccharide were investigated, respectively, and the antioxidant activity of Fructus mori polysaccharide was evaluated by DPPH·and OH· scavenging tests. The results showed that the optimum extraction parameters of Fructus mori polysaccharide were extraction temperature 55 ℃, liquid material ratio 20 mL/g, extraction power 180 W and extraction time 30 min. Under the conditions, the actual extraction rate of Fructus mori polysaccharide was 10.54%. Fructus mori polysaccharide has a strong scavenging effect on DPPH·and OH·, and its IC50 was 0.376 and 0.244 g/L, respectively. The study indicates that the ultrasonic assisted extraction process of Fructus mori polysaccharide optimized by response surface methodology is stable and feasible, and Fructus mori polysaccharide has strong antioxidant activity. [ABSTRACT FROM AUTHOR]

Copyright of Food & Machinery is the property of Food & Machinery Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Coal Science & Technology (0253-2336) is the property of Coal Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Coal Science & Technology (0253-2336) is the property of Coal Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To investigate the expression and significance of NFE2L3 in hepatocellular carcinoma (HCC). Methods We selected 44 cases of HCC patients, and the expression of NFE2L3 protein in the HCC tissues and adjacent normal tissues was detected by two-step immunohistochemical method. The relationship between expression of NFE2L3 and clinicopathological features of HCC was analyzed. The differential expression of NFE2L3 in 371 HCC tissues and 51 adjacent tissues from the cancer genome atlas (TCGA) database was also analyzed. Results The positive expression rates of NFE2L3 in the HCC tissues was 70. 45% (31/44), which was higher than that of the adjacent tissues [15. 91% (7/44)], P<0.05. The expression of NFE2L3 in HCC tissues was related to tumor differentiation and hepatitis B virus infection (P<0.05), but was not related to age, sex, cirrhosis, liver function grade and clinical stage of tumor (all P<0.05). The expression of NFE2L3 in the HCC tissues was significantly higher than that in the adjacent tissues from TCGA (log,FC = 0. 750 121 651 , AveExpr = 2. 336 727 847, P<0.01). Conclusion NFE2L3 may be involved in the carcinogenesis and development of HCC as an oncogene. [ABSTRACT FROM AUTHOR]

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Based on the open-pit and underground mining engineering practice in Pingshuo mining area，the physical simulation and numerical analysis were combined to investigate the deformation-failure characteristics and stress distribution rule of mining slope. Therefore，the deformation-failure mode and the typical instability mechanism of mining slope under the coupling effects of key hard strata and key weak strata were revealed. A four-stages theory of deformation and destruction of mining slope was put forward，including epigenetic recreation of rockmass structures stage，structure transformation stage，time-dependent deformation stage and eventually unstable (stable) stage. Then the engineering mechanics model was established.The criterion of mining slope into the time-dependent deformation stage and eventually unstable (stable) stage were deduced. [ABSTRACT FROM AUTHOR]

A new type of metal support named H-Shaped members with corrugated webs was proposed to be applied in the metal support structure of the mine roadway. Through the experimental study combined with the finite element numerical simulation, the stability behaviors of this type of supporting structure with corrugated webs were studied. The model tests on two straight wall semicircle arch with corrugated webs were designed to obtain the failure mode, the strain and the displacement development rules of the support, and the influence of flange thickness of corrugated steel web on the supporting capacity is analyzed. The results showed that the failure mode of the corrugated steel webs was global asymmetric buckling, when the flange thickness of the corrugated steel webs was increased from 12 mm to16 mm,increased by 33%, the bearing capacity of the support increased by 27.38%. It showed that the thickness of flange has a significant influence on the bearing capacity of the support. And the finite element model was verified by comparing the experimental results with finite element analysis. At the same time, the finite element method was used to compare the I-steel for mining with the corrugated web support with the same steel consumption. The results showed that the bearing capacity of the corrugated web support was 31.68% higher than I-steel for mining, and the deformation was about 4/5 of I-steel for mining. Through the numerical simulation of the influence of various parameters of the section of corrugated steel web support on the elastic and elasto-plastic buckling load of the support, it was found that the height and thickness of the web are more sensitive parameters. The supporting performance of the corrugated webs support and I-steel support for mining were respectively analyzed under the hydrostatic pressure, vertical unidirectional stress and vertical force.Results showed that with the same steel consumption, the corrugated web support had higher shearing capacity, and it was not easy to undergo buckling even if it had high height-to-thickness ratios.In addition, it was flexural and the axial stability capacity could also be greatly improved since the steel consumption was concentrated on the flanges. Therefore, the deformation of the corrugated web support was less than the mining I-steel support, and the supporting performance of the corrugated supporting was superior to I-steel support under various load conditions. [ABSTRACT FROM AUTHOR]

To overcome the water inrush problem of working face at Dongjiahe coal mine, a microseismic monitoring system was installed to analyze the microcrack data from baseplate of fault zone. The initiation and evolution process of microcracks in baseplate was reconstructed during the working face passes through the fault. Also, the microcrack data was combined with Realistic Failure Process Analysis( RFPA2 D) system to study the variation law of stress fields during the evolution process of water-conductive fissure zone in wall rocks of baseplate fault. The results showed that:① according to the analysis of microseismic event distribution, microcracks occurred when working face is 85 m ahead of the fault. The depth of microcracks in baseplate reached 25 m before working pace passing through the fault and the baseplate has a sectioned local failure characteristics. After working face passing through the fault, the maximum depth of microcracks reached 35 m and microcracks are gradually transfixed. ② According to the analysis of microseismic energy density distribution, the concentration zone of high energy density before passing through the fault was about 15 m in strike length, and located in 5-25 m beneath the coal layer. Meanwhile, the fault located within 5 m range of coal layer remained stable. After passing through the fault, the high energy zone expanded to upper goaf and deeper zone, to around 80 m range into the upper goaf along the working face, and around 35 m range beneath the coal layer. ③ According to the microseismic monitoring and numerical simulation results, the expansion process of baseplate water inrush tunnel could be divided into two phases as before passing the fault and after passing the fault. Before passing the fault microcracks occurred initially in the wall rocks of fault around 25 m beneath the coal layer, and expanded through the fault. There were microcracks occurred in 5-25 m beneath coal layer but not yet transfixed. After passing the fault, the microcracks expanded from top to bottom and formed a water inrush tunnel. ④ According to the analysis on the evolution law of fault stress based on numerical simulation, before passing the fault, the shear stress of the fault was a negative value and gradually decreasing. The upper part of the fault tended to slip downwards. The greater the depth the faster the shear stress reached its extremum, resulting in a compression and shear failure in wall rocks from bottom to top. Upon the working face reached near the fault, the shear stress reversed rapidly and reached its maximum. The upper part of the fault tended to go upwards under the action of confined water. The surrounding rocks had a pull failure from top to bottom, and cracks gradually transfixed, forming a water conductive tunnel. [ABSTRACT FROM AUTHOR]