Aerobic Soil Metabolism of a New Herbicide, LGC-42153

2003 ◽  
Vol 51 (3) ◽  
pp. 710-714 ◽  
Author(s):  
Jin Kim ◽  
Kwang-Hyeon Liu ◽  
Seung-Hun Kang ◽  
Suk-Jin Koo ◽  
Jeong-Han Kim
Keyword(s):  
Aerobic Soil ◽  
Soil Metabolism

Products and Kinetics of Cloransulam-methyl Aerobic Soil Metabolism

1996 ◽  
Vol 44 (1) ◽  
pp. 324-332 ◽  
Author(s):  
Jeffrey D. Wolt ◽  
Joelene K. Smith ◽  
Jerry K. Sims ◽  
Dennis O. Duebelbeis
Keyword(s):  
Aerobic Soil ◽  
Kinetics Of ◽  
Soil Metabolism

Aerobic soil metabolism of metsulfuron-methyl

1999 ◽  
Vol 55 (4) ◽  
pp. 434-445 ◽  
Author(s):  
Yutai Li ◽  
W T Zimmerman ◽  
M K Gorman ◽  
R W Reiser ◽  
A J Fogiel ◽  
...  
Keyword(s):  
Metsulfuron Methyl ◽  
Aerobic Soil ◽  
Soil Metabolism

Aerobic soil metabolism of flupyrazofos

1998 ◽  
Vol 54 (3) ◽  
pp. 237-243 ◽  
Author(s):  
Jeong-Han Kim ◽  
Kyong-Goo Kang ◽  
Chang-Kyu Park ◽  
Kyun Kim ◽  
Boo-Hyon Kang ◽  
...  
Keyword(s):  
Aerobic Soil ◽  
Soil Metabolism

scholarly journals Establishment Aerobic Soil Metabolism System Using [14C]Butachlor

2014 ◽  
Vol 18 (4) ◽  
pp. 258-268 ◽  
Author(s):  
Ju-Hye Kim ◽  
Jong-Hwan Kim ◽  
Dae-Wook Kim ◽  
Bong-Jae Lee ◽  
Chan Sub Kim ◽  
...  
Keyword(s):  
Aerobic Soil ◽  
Soil Metabolism

Comparative aerobic soil metabolism of fenvalerate isomers

1987 ◽  
Vol 35 (3) ◽  
pp. 384-387 ◽  
Author(s):  
Philip W. Lee ◽  
Walter R. Powell ◽  
Stephen M. Stearns ◽  
Oliver J. McConnell
Keyword(s):  
Aerobic Soil ◽  
Soil Metabolism

Distribution of Enteric Viruses and Microorganisms in Long-Term Sewage-Treated Soil

1983 ◽  
Vol 15 (5) ◽  
pp. 129-135 ◽  
Author(s):  
Z Filip ◽  
K Seidel ◽  
H Dizer
Keyword(s):  
Soil Bacteria ◽  
Pathogenic Bacteria ◽  
Sewage Treatment ◽  
Anaerobic Bacteria ◽  
Enteric Viruses ◽  
Sewage Irrigation ◽  
Groundwater Samples ◽  
West Berlin ◽  
Aerobic Soil

To determine whether long-term sewage treatment can take place without a pollution risk for soil and groundwater, samples from sewage irrigation fields in West Berlin which have been in use since about 1890 were analyzed for enteric viruses and microorganisms. Enteric viruses were detected in only seven samples from a total number of eighty seven taken from different soil depths. With only one exception, no viruses were found below 60 cm. No viruses were detected in groundwater samples. Long-term sewage irrigation did not result in significant changes in the colony courts of aerobic soil bacteria, but the counts of anaerobic bacteria and actinomycetes were slightly elevated and those of microscopic fungi slightly decreased. Potentially pathogenic bacteria were not detected in soil below 90 cm.

scholarly journals Biodegradable Polymeric Foams Based on Modified Castor Oil, Styrene, and Isobornyl Methacrylate

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1872
Author(s):  
James Anthony Dicks ◽  
Chris Woolard
Keyword(s):  
Young’S Modulus ◽  
Castor Oil ◽  
Young's Modulus ◽  
Attenuated Total Reflection ◽  
Infrared Spectrometry ◽  
Cell Diameter ◽  
Polymeric Foams ◽  
Reactive Diluent ◽  
Structure Property ◽  
Aerobic Soil

The environmental issues of petroleum-derived polymeric foams have necessitated seeking renewable alternatives. This work aims to prepare renewable free-radically polymerized polymeric foams with the ability to biodegrade. Furthermore, this work attempted to incorporate a bio-based reactive diluent, which has not been reported in the literature. The synthesis of maleated castor oil glycerides was performed with products analyzed by Fourier transform infrared spectrometry using attenuated total reflection (ATR-FTIR) and 1H nuclear magnetic resonance (1H NMR) spectroscopy. Polymeric foams were prepared using maleated castor oil glycerides via free radical copolymerization with styrene and isobornyl methacrylate as reactive diluents. Scanning electron microscopy (SEM) was used to determine anisotropic macrocellular morphology, with log-normal cell diameter distributions. The compressive mechanical and energy absorption properties were investigated; the polymeric foams displayed Young’s modulus up to 26.85 ± 1.07 MPa and strength up to 1.11 ± 0.021 MPa using styrene as the reactive diluent, and Young’s modulus up to 1.38 ± 0.055 MPa and strength up to 0.088 MPa when incorporating isobornyl methacrylate. Furthermore, a thorough analysis of the cellular structure–property relationships was performed, indicating relationships to cell diameter, cell wall thickness and apparent density. The polymeric foams displayed rapid mass loss in an aerobic soil environment with multiple erosion sites revealed by SEM. In conclusion, renewable polymeric foams with excellent compressive properties were achieved using styrene as reactive diluent, but the incorporation of isobornyl methacrylate decreased strength-related properties.

Interaction of aerobic soil bacteria with plutonium(VI)

2001 ◽  
Vol 89 (8) ◽  
Author(s):  
P. Panak ◽  
Heino Nitsche
Keyword(s):  
Soil Bacteria ◽  
Aerobic Soil

We studied the interaction of Pu(VI) with

scholarly journals Fluxes and <sup>13</sup>C isotopic composition of dissolved carbon and pathways of methanogenesis in a fen soil exposed to experimental drought

2008 ◽  
Vol 5 (2) ◽  
pp. 1319-1360 ◽  
Author(s):  
K.-H. Knorr ◽  
B. Glaser ◽  
C. Blodau
Keyword(s):  
Soil Heterogeneity ◽  
Free Energies ◽  
Dissolved Carbon ◽  
Hydrogenotrophic Methanogenesis ◽  
13C Isotope ◽  
Drying And Rewetting ◽  
Labelling Experiment ◽  
Aerobic Soil ◽  
The Impact ◽  
Chamber Measurements

Abstract. The impact of drought and rewetting on carbon cycling in peatland ecosystems is currently debated. We studied the impact of experimental drought and rewetting on intact monoliths from a temperate fen over a period of ~300 days, using a permanently wet treatment and two treatments undergoing drought for 50 days. In one of the mesocosms vegetation had been removed. Net production of CH4 was calculated from mass balances in the peat and emission using static chamber measurements and results compared to 13C isotope budgets of CO2 and CH4 and energy yields of acetoclastic and hydrogenotrophic methanogenesis. Drought retarded methane production after rewetting for days to weeks and promoted methanotrophic activity. Based on isotope and flux budgets, aerobic soil respiration contributed 32–96% in the wet and 86–99% in the other treatments. Drying and rewetting did not shift methanogenic pathways according to δ 13C ratios of CH4 and CO2. Although δ13C ratios indicated a prevalence of hydrogenotrophic methanogenesis, free energies of this process were small and often positive on the horizon scale, suggesting that methane was produced very locally. Fresh plant-derived carbon input apparently supported respiration in the rhizosphere and sustained methanogenesis in the unsaturated zone according to a 13C-CO2 labelling experiment. The study documents that drying and rewetting in a rich fen soil may have little effect on methanogenic pathways but result in rapid shifts between methanogenesis and methanotrophy. Such shifts may be promoted by roots and soil heterogeneity, as hydrogenotrophic methanogenesis occurred locally even when conditions were not conducive for this process in the bulk peat.

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