Oxytetracycline interactions at the soil-water interface: Effects of environmental surfaces on natural transformation and growth inhibition ofAzotobacter vinelandii

2012 ◽  
Vol 31 (10) ◽  
pp. 2217-2224 ◽  
Author(s):  
Heather E. Goetsch ◽  
Steven E. Mylon ◽  
Shane Butler ◽  
Julie L. Zilles ◽  
Thanh H. Nguyen
Keyword(s):  
Growth Inhibition ◽  
Soil Water ◽  
Natural Transformation ◽  
Water Interface ◽  
Environmental Surfaces ◽  
Ofazotobacter Vinelandii ◽  
Interface Effects

In situ arsenic speciation at the soil/water interface of saline-alkaline lakes of the Pantanal, Brazil: A DGT-based approach

2021 ◽  
pp. 150113
Author(s):  
José Lucas Martins Viana ◽  
Adriana Felix de Souza ◽  
Amauris Hechavarría Hernández ◽  
Lucas Pellegrini Elias ◽  
Carlos Eduardo Eismann ◽  
...  
Keyword(s):  
Soil Water ◽  
Arsenic Speciation ◽  
Water Interface ◽  
Alkaline Lakes

scholarly journals Effect of Soil Physical Conditions on Emission of Allyl Isothiocyanate and Subsequent Microbial Inhibition in Response to Brassicaceae Seed Meal Amendment

Plant Disease ◽  
2019 ◽  
Vol 103 (5) ◽  
pp. 846-852 ◽  
Author(s):  
Likun Wang ◽  
Mark Mazzola
Keyword(s):  
Growth Inhibition ◽  
Soil Water ◽  
Plant Pathogens ◽  
Soil Water Potential ◽  
Allyl Isothiocyanate ◽  
Pythium Ultimum ◽  
Seed Meal ◽  
Soilborne Disease ◽  
Physical Conditions ◽  
Orchard Soils

Generation of allyl isothiocyanate (AITC) in soil treated with residues of specific Brassicaceae species yields direct and indirect suppression of soilborne plant pathogens. Soil physical conditions demonstrably affected the quantity of AITC generated in response to soil incorporation of a Brassica juncea/Sinapis alba seed meal (SM) formulation. The concentration of AITC generated in SM-amended soil increased with an increase in temperature from 10 to 30°C. AITC emission was also elevated with an increase in soil water potential from −1,000 kPa through −40 kPa; however, a significant decrease in AITC emission was observed in a saturated soil environment (0 kPa). Peak AITC emission was obtained 2 to 3 h after SM amendment under optimal conditions but the peak was delayed in soils incubated at low temperature or in extreme moisture environments. Although AITC production varied significantly across different orchard soils, all three orchard soils yielded the same pattern of AITC release in response to SM amendment over the spectrum of soil water potentials examined in this study. Mycelial growth inhibition in fungi and oomycetes isolated from apple roots was dependent on both AITC concentration and exposure time. Pythium ultimum exhibited sensitivity to AITC at concentrations ranging from 0.01 to 0.22 µg g−1 of soil, whereas Hypocrea lixii was insensitive to AITC. Exposure to AITC at a concentration of 0.22 µg g−1 of soil for a period of 2 h restricted hyphal growth of Rhizoctonia solani AG-5, Ilyonectria destructans, and Mortierella alpina. R. solani AG-5 exhibited significant growth inhibition when incubated at AITC concentrations of 0.008 to 0.011 µg g−1 of soil for 10 h. These findings provide information that will be useful in the management of appropriate soil variables to obtain optimal yields of AITC in response to SM soil amendments and indicate that a standard soil moisture prescription may be suitable for use when applying this SM formulation for soilborne disease control.

Mercury Dynamics at the Flooded Soil-Water Interface in Reservoirs of Northern Québec: in Situ Observations

1999 ◽  
pp. 165-189 ◽  
Author(s):  
Marc Lucotte ◽  
Shelagh Montgomery ◽  
Maxime Bégin
Keyword(s):  
Soil Water ◽  
Water Interface ◽  
Flooded Soil ◽  
In Situ Observations

Benthic macroinvertebrates along the soil/water interface of the HUMEX Lake 1989–1991

1992 ◽  
Vol 18 (6) ◽  
pp. 659-666 ◽  
Author(s):  
Anders Hargeby ◽  
Robert C. Petersen ◽  
Anders Kullberg ◽  
Marie Svensson
Keyword(s):  
Soil Water ◽  
Benthic Macroinvertebrates ◽  
Water Interface

scholarly journals Numerical analysis of backward erosion by soil-water interface tracking

2016 ◽  
Vol 4 (4) ◽  
pp. 84-87
Author(s):  
Kazunori Fujisawa ◽  
Akira Murakami ◽  
Kotaro Sakai
Keyword(s):  
Numerical Analysis ◽  
Soil Water ◽  
Interface Tracking ◽  
Water Interface

scholarly journals Simultaneous measurement of aqueous redox-sensitive elements and their species across the soil-water interface

2021 ◽  
Vol 102 ◽  
pp. 1-10 ◽  
Author(s):  
Zhao-Feng Yuan ◽  
Williamson Gustave ◽  
Raju Sekar ◽  
Jonathan Bridge ◽  
Jia-Yue Wang ◽  
...  
Keyword(s):  
Soil Water ◽  
Simultaneous Measurement ◽  
Water Interface

scholarly journals Simulation of Air–Water Interface Effects for High-speed Planing Hull

2020 ◽  
Vol 19 (3) ◽  
pp. 398-414
Author(s):  
Naga Venkata Rakesh Nimmagadda ◽  
Lokeswara Rao Polisetty ◽  
Anantha Subramanian Vaidyanatha Iyer
Keyword(s):  
High Speed ◽  
Water Interface ◽  
Fluid Forces ◽  
Transition Speed ◽  
High Speeds ◽  
Air Water Interface ◽  
Practical Design ◽  
Actual Flow ◽  
Wetted Surface Area ◽  
Interface Effects

Abstract High-speed planing crafts have successfully evolved through developments in the last several decades. Classical approaches such as inviscid potential flow–based methods and the empirically based Savitsky method provide general understanding for practical design. However, sometimes such analyses suffer inaccuracies since the air–water interface effects, especially in the transition phase, are not fully accounted for. Hence, understanding the behaviour at the transition speed is of fundamental importance for the designer. The fluid forces in planing hulls are dominated by phenomena such as flow separation at various discontinuities viz., knuckles, chines and transom, with resultant spray generation. In such cases, the application of potential theory at high speeds introduces limitations. This paper investigates the simulation of modelling of the pre-planing behaviour with a view to capturing the air–water interface effects, with validations through experiments to compare the drag, dynamic trim and wetted surface area. The paper also brings out the merits of gridding strategies to obtain reliable results especially with regard to spray generation due to the air–water interface effects. The verification and validation studies serve to authenticate the use of the multi-gridding strategies on the basis of comparisons with simulations using model tests. It emerges from the study that overset/chimera grids give better results compared with single unstructured hexahedral grids. Two overset methods are investigated to obtain reliable estimation of the dynamic trim and drag, and their ability to capture the spray resulting from the air–water interaction. The results demonstrate very close simulation of the actual flow kinematics at steady-speed conditions in terms of spray at the air–water interface, drag at the pre-planing and full planing range and dynamic trim angles.

Direct evidence for thickening nanoscale organic films at soil biogeochemical interfaces and its relevance to organic matter preservation

2020 ◽  
Vol 7 (9) ◽  
pp. 2747-2758
Author(s):  
Xizhi Huang ◽  
Yiwei Li ◽  
Georg Guggenberger ◽  
Yakov Kuzyakov ◽  
Bi-Feng Liu ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Water ◽  
Direct Evidence ◽  
Organic Films ◽  
Organic Layer ◽  
Water Interface

Microbial-mediated thickening of the organic layer at the soil–water interface limits the bioavailability of nutrients and protects organic matter.

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