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| 1 | Time-development reliabilityassessment for mass concrete structures显示文摘 | LIU Ning LIU Guangting | 1999 | StructuralSafety1999,21,1: | 1 |
| 2 | The strength of a finite body with multiple cracks显示文摘 | Liu Guangting Zhou Ruizhong | 1990 | Engrg Fracture Mech1990,35,: | 1 |
| 3 | Time-dependent reliability assessment for mass concrete structures 显示文摘 | Liu Ning Liu Guangting | 1999 | Structural safety1999,,21: | 1 |
| 4 | Microstudy on creep of concrete at early age under biaxial compression显示文摘 | Liu Guangting Gao Hu Chen Fengqi | 2002 | Cement and Concrete Research v32 n12 December2002,2002,: | 1 |
| 5 | Time-dependent reliability assessment for mass concrete structures显示文摘 | Liu Ning Liu Guangting | 1999 | Structural Safety1999,,21: | 1 |
| 6 | Erosion effects on soil microbial carbon use efficiency in the mollisol cropland in northeast China显示文摘●Soil erosion decreased soil microbial CUE and increased microbial uptake of carbon.●Soil erosion decreased microbial CUE by decreasing substrate C,N and MBC and increasing soil pH.●Soil microbes had to increase their uptake rate to cope with the loss of substrates with increasing erosion rate.●Soil microbial respiration increased with increasing degree of erosion.●Soil microbial growth rate remained relative stable under different degrees of soil erosion.●Microbial CUE in soil surface was less responsive to erosion than that in deeper soil.Soil microbial carbon use efficiency(CUE)is an important synthetic parameter of microbial community metabolism and is commonly used to quantify the partitioning of carbon(C)between microbial growth and respiration.However,it remains unclear how microbial CUE responds to different degrees of soil erosion in mollisol cropland.Therefore,we investigated the responses of soil erosion on microbial CUE,growth and respiration to different soil erosion rates in a mollisol cropland in northeast China based on a substrate independent method(18O-H2O labeling).Soils were sampled at four positions along a down-slope transect:summit,shoulder,back and foot.We found microbial CUE decreased significantly with increasing soil erosion rate in 5−20 cm soil,but did not change in 0−5 cm.The decrease of microbial CUE in subsoil was because microbes increased C uptake and allocated higher uptake C to microbial basal respiration with increasing soil erosion rate.Microbial respiration increased significantly with soil erosion rate,probably due to the more disturbance and unbalanced stoichiometry.Furthermore,soil microbes in surface soil were able to maintain their growth rates with increasing degree of erosion.Altogether,our results indicated that soil erosion could decrease microbial CUE by affecting soil physical and chemical properties,resulting in more decomposition of soil organic matter and more soil respiration,which had negative feedbacks to soil C sequestration and climate changes in cropland soil. | Xuebing Zhang Guangting Pei Tianyu Zhang Xianlei Fan Ziping Liu Edith Bai | 2023 | Soil Ecology Letters2023,5,4: | 0 |
| 7 | Research on PM_(2.5) Concentration Model Based on MODIS Remote Sensing Retrieval显示文摘Aiming at the complex variation of haze and the influence of various factors,Xi'an is taken as the research area to study the qualitative and quantitative issues between aerosol optical depth(AOD)and haze before and after correction.Combining atmospheric water vapor content(PWV)and meteorological factor data,it is proposed to use'backward screening'method to carry out regression modeling and verification of the revised PM_(2.5) mass concentration,AOD,PWV and meteorological factors.The results show that the correlation between AOD and PM_(2.5) is significantly improved after vertical correction and humidity correction.From the model's decision coefficient R^(2) and the relative error of the estimated PM_(2.5) mass concentration,it can be seen that the estimation model of PM_(2.5) mass concentration based on multiple impact factors is better than the estimation model solely based on AOD. | Quanjin LI Min MAO Guangting LIU Yawen SHAO | 2023 | Meteorological and Environmental Research2023,14,5: | 0 |
| 8 | The Geochemical Characteristics and Minerogenic Model for the Amo Hypothermal Tin Deposit in Ximeng County, Yunnan Province显示文摘Through studies on the element geochemistry, alteration of country rocks, ore-forming fluids and isotopegeochemistry of the Arno tin deposit in the metamorphic rocks of the Upper Proterozoic Ximeng Group, theauthors consider that the concentration of the B-F-Li-Rb-Cs-Sn association is related to acidic magmatism inthe study area. The Fe-Mg-Li tourmaline in the ore is the replaced product of the country rocks byhypothermal fluid. The δ18O values of mineral separates are +2.01- +13.16‰ and their δ34S values, +2.6-+7.2‰. The ore-forming materials were derived from hydrothermal fluid of granitic magma. For themineralization, the temperature is 450°-350℃, the pressure, 450-1000×105 Pa, and the age, Himalayan(21.5 Ma). According to the geochemical characteristics, a minerogenic model is established: the deposit is ahypothermal cassiterite-quartz vein type tin deposit controlled by the hidden Himalayan granites. | Zhao Daxian Tang Guangting The Fifth Geological Party, Yunnan Bureau of Geology and Mineral Resources, Simao,Yunnan Liu Linqun | 1991 | Acta Geologica Sinica(English Edition)1991,65,3: | 0 |