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IDSS的一种熔合式系统结构
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作者 刘俊友 《合肥炮兵学院学报》 1998年第3期72-74,共3页
本文首先简要介绍智能决策支持系统(IDSS)的研究情况,在IDSS的典型系统结构的基础上,提出了一种新的熔合式结构,并对其进行了分析。最后对该系统结构在系统设计是的注意事项进行了说明。
关键词 决策支持系统 溶合式 系统结构 IDSS 智能
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Influence of different solution methods on microstructure, precipitation behavior and mechanical properties of Al-Mg-Si alloy 被引量:7
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作者 Guan-jun GAO Chen HE +3 位作者 Yong LI Jia-dong LI Zhao-dong WANG R. D. K. MISRA 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2018年第5期839-847,共9页
The effects of different solution methods on microstructure, mechanical properties and precipitation behavior of Al-Mg-Si alloy were investigated by scanning electron microscope, transmission electron microscope, tens... The effects of different solution methods on microstructure, mechanical properties and precipitation behavior of Al-Mg-Si alloy were investigated by scanning electron microscope, transmission electron microscope, tensile test, and differential scanning calorimetry. The results revealed that the recrystallized grains of the alloy after the solution treatment with hot air became smaller and more uniform, compared with solution treatment with electrical resistance. The texture of the alloy after two solution treatment methods was different. More rotated cube components were formed through solution treatment with electrical resistance, which was better for improving the drawability of the alloy. The strength of the alloy under the solution treatment with hot air was higher before stamping, because of the small uniform grains and many clusters in the matrix. The alloy solution treated with hot air also possessed good bake hardenability, because the transformation occurred on more clusters in the matrix. 展开更多
关键词 Al-Mg-Si alloy solution method recrystallization grain TEXTURE mechanical property precipitation activation energy
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Study on New Pretreatment Combining Dilute Acid Treatment and Organic Solvent Water / Ethanol for Biorefinery: Application to Switch Grass
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作者 Dachun Gong Yingping Huang +3 位作者 M. Holtman Kevin Ruiping Li Franqui-Espiet Diana J. Orts William 《Journal of Life Sciences》 2010年第3期25-32,共8页
Switch grass was developed as a pioneer energy crop in USA with great industrial prospect. It contains about 60% sugars and 18% lignin. The purpose of this research is to find pretreatment process to fractionate cellu... Switch grass was developed as a pioneer energy crop in USA with great industrial prospect. It contains about 60% sugars and 18% lignin. The purpose of this research is to find pretreatment process to fractionate cellulose, hemicellulose and lignin from switch grass to obtain much more useful chemicals and enhance the residue solid to be hydrolyzed by enzymes. The six different pretreatment methods were studied, such as hot water pretreatment (HWP) alone, dilute acid pretreatment (DAP), ammonia pretreatment (AP), lime pretreatment (LP), organosolv water / ehanol pretreatment (OWEP), and organosolv water / acetone pretreatment (OWAP). It was the best method combining DAP with OWEP because the hemicellulose sugars were recovered in the first residual liquid while a varied amount of cellulose was retained in the residual solid and the lignin fraction was obtained by simply adjusting the pH from the second liquid. The result shows the optimal two-stage process consisted of the first stage DAP at 428 K for 7 min with 0.8% sulfuric acid, resulting in 79.82% glucose recovery yield and 98.74% xylose removal and the second stage OWEP at 468K for 20 min in 45% (v / v) ethanol with 0.4% NaOH, resulting in 62% total glucose yield 99% xylose and 80% lignin removal. After enzymatic hydrolysis, the glucose yield was up to 92.6%, compared with 16% yield from untreated switch grass. Scanning electron microscopy (SEM) highlighted the differences in switch grass structure from the various pretreatment methods during biomass fractionation. 展开更多
关键词 Switch grass FRACTIONATION dilute acid pretreatment organosolv pretreatment.
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The Role of the Aerosol Indirect Effect in the Northern Indian Ocean Warming Simulated by CMIP5 Models
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作者 HU Ning LI Li-Juan WANG Bin 《Atmospheric and Oceanic Science Letters》 CSCD 2014年第5期411-416,共6页
The northern Indian Ocean (NIO) experienced a decadal-scale persistent warming from 1950 to 2000, which has influenced both regional and global climate. Because the NIO is a region susceptible to aerosols emis- sion... The northern Indian Ocean (NIO) experienced a decadal-scale persistent warming from 1950 to 2000, which has influenced both regional and global climate. Because the NIO is a region susceptible to aerosols emis- sion changes, and there are still large uncertainties in the representation of the aerosol indirect effect (ALE) in CMIP5 (Coupled Model Intercomparison Project Phase 5) models, it is necessary to investigate the role of the AIE in the NIO warming simulated by these models. In this study, the authors select seven CMIP5 models with both the aerosol direct and indirect effects to investigate their performance in simulating the basin-wide decadal-scale NIO warming. The results show that the decreasing trend of the downwelling shortwave flux (FSDS) at the surface has the major damping effect on the SST increasing trend, which counteracts the warming effect of greenhouse gases (GHGs). The FSDS decreasing trend is mostly contrib- uted by the decreasing trend of cloudy-sky surface downwelling shortwave flux (FSDSCL), a metric used to measure the strength of the AIE, and partly by the clear-sky surface downwelling shortwave flux (FSDSC). Models with a relatively weaker AIE can simulate well the SST increasing trend, as compared to observation. In contrast, models with a relatively stronger AIE produce a much smaller magnitude of the increasing trend, indicat- ing that the strength of the AIE in these models may be overestimated in the NIO. 展开更多
关键词 Indian Ocean warming aerosol indirect ef-fect CMIP5
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Decoction vs extracts-mixed solution: effect of Yiqihuoxue formula on non-alcoholic fatty liver disease in rats
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作者 Shaodong Chen Haihong Zhou +2 位作者 Manting Lin Ran Mi Long Li 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2013年第4期513-517,共5页
OBJECTIVE: To investigate the effects on non-alcoholic fatty liver disease (NAFLD) in rats of the decoction of Yiqihuoxue formula and the solution prepared with the extracts from the individual herbal medicines of the... OBJECTIVE: To investigate the effects on non-alcoholic fatty liver disease (NAFLD) in rats of the decoction of Yiqihuoxue formula and the solution prepared with the extracts from the individual herbal medicines of the formula. METHODS: The rat models of NAFLD were established with high-fat diet (HFD) for 10 weeks. Thirty-two rats were randomly divided into 4 groups: the control group, the model group, the decoction group and the solution group, 8 for each group. From the 6th week, drinking water, the decoction and the solution were intragastrically administrated accordingly to the rats for 5 weeks. The pathological changes of the liver tissues were observed with Hematoxylin and eosin staining, triglyceride levels in liver tissues measured, serum alanine aminotransferase (ALT) activity measured, and serum gastrin and motilin tested. RESULTS: Fatty degeneration and vacuole-like changes to various degrees occurred in hepaticcells of the model group. Indicators for fat metabolism, serum ALT activity and hepatic triglyceride level significantly increased, while serum gastrin and motilin levels significantly decreased. Serum ALT activity and the fatty deposition in hepatocytes were significantly reduced. In the meantime, the expressions of gastrin and motilin in the serum rose significantly in the treatment groups. CONCLUSION: Both the decoction and the extracts-mixed solution had effect on NAFLD of protecting the liver function and reducing the fatty deposition in liver, which might be achieved by regulating the expression of gastrin and motilin. 展开更多
关键词 Decoctions Plant extracts Non-alcoholic fatty liver disease Gastrointestinal hormones Yiqihuoxue formula
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