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39篇 您的检索式:作者名="Li Shuguo"
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1Effects of natural covers on soil evaporation of the shelterbelt along the Tarim Desert Highway显示文摘The control of soil evaporation is one of important approaches to save water. The artificially simulated evaporation experiments have been conducted in the hinterland of the Taklimakan Desert to reveal the effects of the natural covers on the soil evaporation of the Tarim Desert Highway shelterbelt as well as provide some insights in the efficient utilization of water resources and optimization of irrigation systems. The results showed that (1) All the covers, including the sand deposit, the salt crust, the litter, the sand-litter mixed layer and so on, can significantly inhibit the soil water evaporation. Specifically, the daily evaporation, the total evaporation, and the evaporation rate in covered sands were much smaller than that of sands without cover. The cover inhibition effects increased with the cover thickness. Particularly, the soil evaporation of the covered sands was less affected by external and internal factors than that of the bare sands. Moreover, the variation of daily evaporation of covered sands was smaller than that of bare sands. The cumulative evaporation varied linearly with time in the covered sands whereas it varied logarithmically in the bare sands. In addition, the soil evaporation in the bare sands showed significantly different characteristics in the early and late stages of the evaporation. (2) All the covers exhibited the significant inhibiting effect on the soil evaporation, and the inhibition efficiency increased logarithmically with the cover thickness. However, as the cover thickness was above a certain value, the increase in the inhibition efficiency was slow. Particularly, at a cover thickness of 2 cm, there was no obvious difference in the inhibition efficiency among all kinds of covers. The maximum inhibition efficiency as calculated from the daily evaporation on the first day of irrigation was: sand-litter mixed layer (79.92%) > litter layer (78.96%) > salt crust (75.58%) > sand bed (74.11%), whereas the average inhibiting efficiency as calculated from the cumulative soil evaporation at the end of an irrigation cycle (the fourth day) was: salt crust (67.78%) > sand-litter mixed layer (66.72%) > sand deposit (63.28%) > litter layer (61.74%).ZHOU HongWei LI ShengYu SUN ShuGuo XU XinWen LEI JiaQiang LIU Shang DU WenYi YAN Zeng WANG YongChang 2008Chinese Science Bulletin2008,53,S2:11
2The salt accumulation at the shifting aeolian sandy soil surface with high salinity groundwater drip irrigation in the hinterland of the Taklimakan Desert显示文摘The EC analysis and water serial sampling was performed in the Tarim Desert Highway shelterbelt to explore the water and salt dynamics of the shallow aeolian sandy soil ( 0-30cm) under high salinity groundwater drip irrigation. It was found that in one irrigation cycle, the EC of the shallow shifting aeolian sandy soil ( 0-30cm) increased while the water content decreased. The EC of the surface aeolian sandy soil at the wetting front was far greater than that of the wetting area or the outside of the wetting area. During the irrigation cycle, the EC of the wetting front and the wetting area changed at a significant magnitude, whereas the EC of the outside of the wetting area remained largely steady. The horizontal influence distance of drip irrigation on the salt accumulation at the soil surface was about 100 cm, and the vertical influence depth was 5 cm. The three most abundant ions in the accumulated salt at the aeolian sandy soil surface were Na+, Cl- and SO42-. The salt accumulation at the soil surface was influenced by air temperature, wind speed, mineralization of irrigation water, sand burial thickness, soil texture, and litter content.ZHANG JianGuo XU XinWen LEI JiaQiang SUN ShuGuo FAN JingLong LI ShengYu GU Feng QIU YongZhi XU Bo 2008Chinese Science Bulletin2008,53,S2:10
3Effect of the shelterbelt along the Tarim Desert Highway on air temperature and humidity显示文摘The temperature and humidity of the shelterbelt micro-climate on both horizontal and vertical scales in the extremely drought area were measured with multiple HOBO temperature and humidity automatic observation equipments in the hinterland of the Taklimakan Desert. The results show that the shelterbelt ecosystem of the desert highway plays typical micro-climate adjustment rolesin stabilizing surface air temperature and increasing air humidity, and so on. Solar radiation significantly affects both temperature and humidity of surface layers, and it has a positive correlation with the temperature but a negative correlation with the air humidity. When it is cloudy, the weather has a great impact on keeping temperature and humidity in the shelterbelt. The shelterbelt also significantly influences the environment, and the micro-climate in the belt has an obvious characteristic of cooling and humidification: compared with the original sand area, the temperature in the shelterbelt is always lower and the humidity is always higher. Moreover, the temperature range at the shelterbelt edge is greater than that in the sand area, but the humidity is always higher. Our conclusion is that the vertical-effect range of temperature of the shelterbelts is 4 -10 m, and the humidity range is 6 to 8 m; the horizontal-effect range of temperature is 16 m and the humidity range is about 24 m.WANG HaiFeng LEI JiaQiang LI ShengYu FAN JingLong LI YingGang SUN ShuGuo CHANG Qing 2008Chinese Science Bulletin2008,53,S2:4
4Method for Caution Values Calculation of Dissolved Gases in Transformers Based on Statistical Distribution and Correlation Analysis显示文摘Before diagnosed by DGA (dissolved gas analysis) methods, gas caution values, which index the level of gas formation, must be used to evaluate the possibility of incipient faults to reduce the misdiagnosis in the normal state. However, the calculation of these values is now only based on cumulative percentile method without taking into account operating conditions. To overcome this disadvantage, a new approach to calculate the transformer caution values is presented. This approach is based on statistical distribution and correlation analysis, and it takes the individual variation and fluctuation caused by internal and external factors into consideration. Then 6550 transformer DGA data collected from North China Power Grid are analyzed in this paper. The results show that the volume fraction of TH (total hydrocarbon) approximately obeys normal distribution when the 3-sigma rule is used to calculate its caution value. The volume fraction of CO has a strong positive correlation with oil temperature. For H2, the negative correlation with oil temperature is significant when the volume fraction is not very low. The caution value curves for CO and H2 are obtained by regression analyses. Thus, the gas caution values/curves obtained using the new method are not always constant, but vary with oil temperature, which is an advantage of the proposed method compared with cumulative percentile method. The variation of gas caution values/curves also reflects the influence of the external factors, for instance, va- rying with monitoring time ensures that the gas caution values are always consistent with operating status.WANG Xuelei LI Qingmin LI Chengrong YANG Rui GAO Shuguo 2013高电压技术2013,39,8:3
5Is oral microbiome of children able to maintain resistance and functional stability in response to short-term interference of ingesta?显示文摘Dear Editor,A series of studies had focused on the ecological stability of human microbiome(Lozupone et al.,2012;Faith et al.,2013;Moya and Ferrer,2016).Despite the continuous perturbation and the highly personalized composition within the human microbiome(Human Microbiome Project,2012),healthy adults stably maintain their microbial communities in terms of space and time(Faith et al.,2013;Moya and Ferrer,2016;Oh et al.,2016).This stability is proved to be critical for the well-being of human body(Lozupone et al.,2012).On the contrary,major shifts in microbial community composition are often related to diseases(Lynch and Pedersen,2016).Fangqiao Wei Xiangyu Sun Yufeng Gao Haoyu Dou Yang Liu Lili Su Haofei Luo Ce Zhu Qian Zhang Peiyuan Tong Wen Ren Zhe Xun Ruochun Guo Yuanlin Guan Shenghui Li Yijun Qi Junjie Qin Feng Chen Shuguo Zheng 2021Protein & Cell2021,12,6:1
6Investigation of 3-D dynamic wind loads on lattice Towers显示文摘LIANGHAO ZOU SHUGUO LIANG Q S LI 2008Wind and Structure2008,11,4:1
7Development Strategy Research of Modem Eco-Agricuhure on the basis of constructing the Ru- ral Circular Economy-For the Example of Shandong Province 显示文摘Cao Junjie Li Ming Li Shuguo 2011Energy Procedia2011,5,:1
8Fractal Image Compression Based on Spatial Correlation and Hybrid Genetic Algorithm显示文摘Wang Xingyuan Li Fanping Wang Shuguo 2009Journal of Visual Communication and Image Represenlation2009,20,8:1
9An evaluation of onset wind velocity for 2-D coupled gaUoping oscillations of tower buildings 显示文摘Liang Shuguo Li Qiusheng Li Guiqing 1993Journal of Wind Engineering and Industrial Aerodynamics1993,50,:1
10Investigation of 3-D dynamic wind loads on lattice towers 显示文摘Zou Lianghao Liang Shuguo Li Q S 2008Wind and Structures2008,11,4:1
11A novel method for the determination of acid value of vegetable oils显示文摘Li Shuguo Zhang Hui Xue Wentong 2007Eur J Lipid Sci Technol2007,109,:1
12Prediction of wind-induced pressures on a large gymnasium roof using artificial neural networks显示文摘Fu Jiyang Liang Shuguo Li Qiusheng 2007Computers and Structures2007,85,:1
13Torsional dynamic wind loads on rectangular tall buildings 显示文摘Liang Shuguo Li Q S Liu Shengehun 2004Engineering Structures2004,26,1:1
14Torsional dynamic wind loads on rectangular tall buildings显示文摘Shuguo Liang Q.S. Li Shengchun Liu Liangliang Zhang Ming Gu 2003Engineering Structures2003,,1:1
15Mathematical model of acrosswind dynamic loads on rectangular tall buildings显示文摘Shuguo Liang Shengchun Liu Q.S. Li Liangliang Zhang Ming Gu 2002Journal of Wind Engineering & Industrial Aerodynamics2002,,12:1
16Mathematical model of acrosswind dynamic loads on rectangular tall builidngs显示文摘Liang Shuguo Liu Shengchun Li Qiushen 2002Journal of Wind Engineering and Industrial Aerodynamic2002,90,12:1
17Torsional dynamic wind loads on rectangular tall buildings 显示文摘Liang Shuguo Li Qiushen Liu Shengchun 2004Engineering Structures2004,26,4:1
18Comparison of trimethoprim molecularly imprinted polymers in bulk and in sphere as the sorbent for solid-phase extraction and extraction of trimethoprim from human urine and pharmaceutical tablet and their determination by high-performance liquid chromatography显示文摘HU Shuguo LI Li HE Xiwen 2005Anal Chim Acta2005,537,:1
19Torsional Dynamic Wind Loads on Rectangular Tall Buildings显示文摘Liang Shuguo Li Q S Liu Shengchun 0,,:1
20Mathematical model of acrosswind dynamic loads on rectangular tall buildings 显示文摘Liang Shuguo Liu Shengchun Li Q S 2002Journal of Wind Engineering and Industrial Aerodynamics2002,90,12131415:1
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