Birnessite films are sensitive indicators of microbial manganese reduction in soil [0.03%]
锰矿薄膜是土壤中微生物还原锰的敏感指标
Katelyn C Hino,Jasper Romero,Joseph L Loffredo et al.
Katelyn C Hino et al.
Manganese (Mn) and Fe indicator of reduction in soils (IRIS) devices are low-cost, convenient tools for identifying reducing conditions in soils. Because Mn is reduced at similar redox potentials as nitrate, there is considerable interest i...
C L Cheng,M Kang,E Perfect et al.
C L Cheng et al.
Water retention curves are essential for understanding the hydrologic behavior of partially saturated porous media and modeling flow and transport processes within the vadose zone. We directly measured the main drying and wetting branches o...
Space and time-resolved monitoring of phosphorus release from a fertilizer pellet and its mobility in soil using microdialysis and X-ray computed tomography [0.03%]
利用微透析和X射线计算机断层扫描对来自肥料颗粒的磷素释放进行空间和时间上的监测及其在土壤中的迁移性研究
Chiara Petroselli,Katherine A Williams,Arpan Ghosh et al.
Chiara Petroselli et al.
Phosphorus is an essential nutrient for crops. Precise spatiotemporal application of P fertilizer can improve plant P acquisition and reduce run-off losses of P. Optimizing application would benefit from understanding the dynamics of P rele...
Conservation tillage supports soil macrofauna communities, infiltration, and farm profits in an irrigated maize-based cropping system of Colorado [0.03%]
免耕促进科罗拉多州灌溉玉米种植体系中的土壤宏节肢动物群落、入渗和农场收益
Emmanuel Deleon,Troy A Bauder,Erik Wardle et al.
Emmanuel Deleon et al.
In the past several decades conservation tillage systems have been introduced to address the negative impacts of intensive tillage, but the potential of these technologies to improve soil function and maintain yields is still not fully unde...
B Singh,Y Fang,C T Johnston
B Singh
We used diffuse reflectance Fourier-transform infrared (DR-FTIR) spectroscopy, X-ray diffraction (XRD), and chemical and isotopic analyses to characterize the light fraction of four contrasting soils (control and biocharamended soils) to de...
J H Knight,G J Kluitenberg
J H Knight
Two equations are currently available for estimating soil volumetric heat capacity (pc) with the dual-probe heat-pulse (DPHP) method. One is simple but gives only approximate results because it assumes that the DPHP sensor releases an impul...
Discontinuous pore fluid distribution under microgravity--KC-135 flight investigations [0.03%]
微重力环境下的不连续孔隙流体分布—失重飞机实验研究
Lakshmi N Reddi,Ming Xiao,Susan L Steinberg
Lakshmi N Reddi
Designing a reliable plant growth system for crop production in space requires the understanding of pore fluid distribution in porous media under microgravity. The objective of this experimental investigation, which was conducted aboard NAS...
Dissolution kinetics of iron-, manganese-, and copper-containing synthetic hydroxyapatites [0.03%]
含铁、锰和铜的合成羟基磷灰石的溶解动力学
B Sutter,L R Hossner,D W Ming
B Sutter
Micronutrient-substituted synthetic hydroxyapatite (SHA) is being evaluated by the National Aeronautics and Space Administration's (NASA) Advanced Life Support (ALS) Program for crop production on long-duration human missions to the Interna...
Measurement of hydraulic characteristics of porous media used to grow plants in microgravity [0.03%]
微重力下植物生长培养介质的输水特性测量研究
Susan L Steinberg,Darwin Poritz
Susan L Steinberg
Understanding the effect of gravity on hydraulic properties of plant growth medium is essential for growing plants in space. The suitability of existing models to simulate hydraulic properties of porous medium is uncertain due to limited un...
Mineralogical and chemical characterization of iron-, manganese-, and copper-containing synthetic hydroxyapatites [0.03%]
含铁、锰和铜的羟基磷灰石的矿物学和化学特性研究
B Sutter,D W Ming,A Clearfield et al.
B Sutter et al.
The National Aeronautics and Space Administration's (NASA) Advanced Life Support (ALS) Program is evaluating the use of Fe-, Mn-, and Cu-containing synthetic hydroxyapatite (SHA) as a slow release fertilizer for crops that might be grown on...