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| 1 | 环境放射性核素^(137)Cs和^(210)Pb_(ex)的田间原位测定研究显示文摘原位现场γ谱仪具有快速准确监测土壤中环境放射性核素137Cs和210Pbex的潜力,可以解决传统环境放射性核素示踪土壤侵蚀在选择参考点和测定时间过长问题。本研究应用现场γ谱仪(ISOCS,In-situObject Counting System),对内蒙古锡林浩特草原土壤中137Cs和210Pbex的含量进行了田间原位(不采样)测定,并与室内γ谱仪测定结果进行了比对。结果显示:现场γ谱仪的探头离地面1m,采用90度准直器,测量时间保证3600s以上时,测定的土壤中137Cs面积浓度与室内测定结果一致,二者的平均偏差为8%,表明现场γ谱仪测定具有较高精度,是快速评价土壤侵蚀速率的有效技术;210Pbex的原位测定结果显著高于室内测定结果,可能由于测定时间较短所致。初步研究结果表明:原位测定具有时间短、精度高的优点,可以克服传统采样造成的空间变异误差。 | 李勇 李俊杰 Roger Funk 李璐 张晴雯 | 2007 | 核农学报2007，21，6： | 2 |
| 2 | Developing core sets for patients with head and neck cancer based on the International Classification of Functioning,Disability and Health (ICF)显示文摘 | Tschiesner U Cieza A Rogers SN PiccirilloJ Funk G Stucki G | 2007 | Eur Arch Otorhinolaryngol2007，264，： | 1 |
| 3 | Temporal variations in PM 10 and particle size distribution during Asian dust storms in Inner Mongolia显示文摘 | Carsten Hoffmann Roger Funk Michael Sommer Yong Li | 2008 | Atmospheric Environment2008，，36： | 1 |
| 4 | A computational fluid dynamics model for wind simulation:model implementation and experimental validation显示文摘To provide physically based wind modelling for wind erosion research at regional scale, a 3D computational fluid dynamics (CFD) wind model was developed. The model was programmed in C language based on the Navier-Stokes equations, and it is freely available as open source. Integrated with the spatial analysis and modelling tool (SAMT), the wind model has convenient input preparation and powerful output visualization. To validate the wind model, a series of experiments was con- ducted in a wind tunnel. A blocking inflow experiment was designed to test the performance of the model on simulation of basic fluid processes. A round obstacle experiment was designed to check if the model could simulate the influences of the obstacle on wind field. Results show that measured and simulated wind fields have high correlations, and the wind model can simulate both the basic processes of the wind and the influences of the obstacle on the wind field. These results show the high reliability of the wind model. A digital elevation model (DEM) of an area (3800 m long and 1700 m wide) in the Xilingele grassland in Inner Mongolia (autonomous region, China) was applied to the model, and a 3D wind field has been successfully generated. The clear imple- mentation of the model and the adequate validation by wind tunnel experiments laid a solid foundation for the prediction and assessment of wind erosion at regional scale. | Zhuo-dong ZHANG Ralf WIELAND Matthias REICHE Roger FUNK Carsten HOFFMANN Yong LI Michael SOMMER | 2012 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2012，13，4： | 1 |
| 5 | Soil properties related to potential particulate matter emissions (PM10) of sandy soils显示文摘 | Silvia B. Aimar Mariano J. Mendez Roger Funk Daniel E. Buschiazzo | 2011 | Aeolian Research2011，，4： | 1 |
| 6 | Horizontal and vertical fluxes of particulate matter during wind erosion on arable land in the province La Pampa, Argentina显示文摘A detailed analysis of horizontal and vertical particulate matter(PM) fluxes during wind erosion has been done, based on measurements of PM smaller than 10, 2.5, and 1.0 μm, at windward and leeward positions on a measuring field. The three fractions of PM measurement are differently influenced by the increasing wind and shear velocities of the wind. The measured concentrations of the coarser fractions of the fine dust, PM_(10), and PM_(2.5), increase with wind and shear velocity, whereas the PM_(1.0)concentrations show no clear correlation to the shear velocity. The share of PM_(2.5)on PM_(10)depends on the measurement height and wind speed and varies between 4 and 12 m/s at the 1 m height ranging from 25% to 7%(average 10%),and at the 4 m height from 39% to 23%(average 30%). Although general relationships between wind speed, PM concentration, and horizontal and vertical fluxes could be found, the contribution of the measuring field was very low, as balances of incoming and outgoing fluxes show. Consequently, the measured PM concentrations are determined from a variety of sources, such as traffic on unpaved roads,cattle drives, tillage operations, and wind erosion, and thus, represent all components of land use and landscape structure in the near and far surroundings of the measuring field. The current results may reflect factors from the landscape scale rather than the influence of field-related variables. The measuring devices used to monitor PM concentrations showed differences of up to 20%, which led to considerable deviations when determining total balances. Differences up to 67% between the calculated fluxes prove the necessity of a previous calibration of the devices used. | Nicole Siegmund Roger Funk Michael Sommer Fernando Avecill Juan Esteban Panebianco Laura Antonela Iturri Daniel Eduardo Buschiazzo | 2022 | International Journal of Sediment Research2022，37，5： | 0 |
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