Field Evaluation of in Situ Aerobic Cometabolism of Trichloroethylene and Three Dichloroethylene Isomers Using Phenol and Toluene as the Primary Substrates

1995 ◽  
Vol 29 (6) ◽  
pp. 1628-1637 ◽  
Author(s):  
Gary D. Hopkins ◽  
Perry L. McCarty
Keyword(s):  
Field Evaluation ◽  
Aerobic Cometabolism

Pilot studies for in-situ aerobic cometabolism of trichloroethylene using toluene-vapor as the primary substrate

2004 ◽  
Vol 38 (19) ◽  
pp. 4125-4134 ◽  
Author(s):  
M.C. Tom Kuo ◽  
K.F. Liang ◽  
Y.L. Han ◽  
K.C. Fan
Keyword(s):  
Pilot Studies ◽  
Toluene Vapor ◽  
Aerobic Cometabolism ◽  
Primary Substrate

Field Evaluation and in Situ Stress Testing of the Organic-Diffusive Gradients in Thin-Films Passive Sampler

2018 ◽  
Vol 52 (21) ◽  
pp. 12573-12582 ◽  
Author(s):  
Jonathan K. Challis ◽  
Kevin M. Stroski ◽  
Kim H. Luong ◽  
Mark L. Hanson ◽  
Charles S. Wong
Keyword(s):  
Thin Films ◽  
Stress Testing ◽  
Field Evaluation ◽  
In Situ Stress ◽  
Passive Sampler ◽  
Diffusive Gradients

Alternative waste residue materials for passive in situ prevention of sulfide-mine tailings oxidation: A field evaluation

2014 ◽  
Vol 267 ◽  
pp. 245-254 ◽  
Author(s):  
Peter Nason ◽  
Raymond H. Johnson ◽  
Clara Neuschütz ◽  
Lena Alakangas ◽  
Björn Öhlander
Keyword(s):  
Mine Tailings ◽  
Field Evaluation

Field evaluation of permeability of concrete linings and rock masses around underground lined rock caverns by a novel in-situ measurement system

2012 ◽  
Vol 137-138 ◽  
pp. 97-106 ◽  
Author(s):  
Hyung-Mok Kim ◽  
Yanick Lettry ◽  
Dohyun Park ◽  
Dong-Woo Ryu ◽  
Byung-Hee Choi ◽  
...  
Keyword(s):  
Measurement System ◽  
Field Evaluation ◽  
In Situ Measurement ◽  
Rock Masses

Push-pull test evaluation of the in situ aerobic cometabolism of chlorinated ethenes by toluene-utilizing microorganisms

2005 ◽  
Vol 52 (7) ◽  
pp. 35-40 ◽  
Author(s):  
M.F. Azizian ◽  
J.D. Istok ◽  
L. Semprini
Keyword(s):  
Contaminated Aquifer ◽  
Chlorinated Aliphatic Hydrocarbons ◽  
Toluene Concentration ◽  
Aerobic Cometabolism ◽  
In Situ Conditions ◽  
Single Well ◽  
Reactive Solutes ◽  
Pull Tests ◽  
Intermediate Oxidation

Single-well, push-pull tests were conducted in a contaminated aquifer to evaluate the ability of toluene-oxidizing microorganisms to cometabolize chlorinated aliphatic hydrocarbons (CAHs), such as trichloroethene (TCE). Test solutions were injected into the aquifer using a standard monitoring well, and then were transported under natural-gradient conditions. Transport tests demonstrated similar transport characteristics of the conservative tracer and the reactive solutes. Biostimulation tests were then performed by injecting a test solution containing dissolved toluene substrate, hydrogen peroxide, bromide, and nitrate in order to increase the biomass of toluene-utilizing microorganisms. Decreases in toluene concentration and the production of o-cresol as an intermediate oxidation product indicated the simulation of toluene-utilizing microorganisms containing an ortho-monooxygenase enzyme. Transformation tests demonstrated that indigenous microorganisms had the capability to transform the surrogate compounds (e.g. isobutene) and both cis-dichloroethene (cis-DCE) and trans-dichloroethene (trans-DCE). Isobutene was transformed to isobutene oxide, indicating transformation by a toluene ortho-monooxygenase, and both cis-DCE and trans-DCE were transformed. In a final test, the utilization of toluene, and the transformation of isobutene, cis-DCE, and trans-DCE were all inhibited in the presence of 1-butyne, a known inhibitor of the toluene ortho-monooxygenase enzyme. The method assessed the activity of attached microorganisms under in situ conditions of bioremediation.

Characterization of New Wheat-Dasypyrum breviaristatum Introgression Lines with Superior Gene(s) for Spike Length and Stripe Rust Resistance

2018 ◽  
Vol 156 (2) ◽  
pp. 117-125 ◽  
Author(s):  
Hongjin Wang ◽  
Zhihui Yu ◽  
Bin Li ◽  
Tao Lang ◽  
Guangrong Li ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Stripe Rust ◽  
Rust Resistance ◽  
Field Evaluation ◽  
Spike Length ◽  
Stripe Rust Resistance ◽  
Stripe Rust Resistance Gene ◽  
Fraction Length ◽  
Dasypyrum Breviaristatum

Dasypyrum breviaristatum (genome VbVb) contains potentially important traits for commercial wheat production. Chromosome 2Vb of D. breviaristatum carries several desirable agronomic characters, including long spike length as well as enhanced resistance to stripe rust, which are expressed in a common wheat background. In this study, wheat-D. breviaristatum 2Vb deletion lines were produced and identified by fluorescence in situ hybridization (FISH), and 74 molecular markers specific to D. breviaristatum chromosome 2Vb were physically localized in 4 distinct chromosomal regions. New wheat-D. breviaristatum 2Vb translocation lines were also characterized by FISH. The breakpoint of the translocation T3AS.3AL-2VbS was determined by physically mapped molecular markers. Field evaluation revealed that genes affecting plant height and spike length are located on fraction length (FL) 0.65-1.00 of 2VbS, while the stripe rust resistance gene(s) are located on FL 0.40-1.00 of D. breviaristatum chromosome 2VbL. The newly characterized wheat-Dasypyrum chromosomal introgressions are of potential value for the improvement of the yield and disease resistance of wheat.

A field evaluation of in situ biodegradation of trichloroethylene through methane injection

2001 ◽  
Vol 35 (9) ◽  
pp. 2145-2152 ◽  
Author(s):  
Masahiro Eguchi ◽  
Masami Kitagawa ◽  
Yoshihiko Suzuki ◽  
Mithutoshi Nakamuara ◽  
Tatsushi Kawai ◽  
...  
Keyword(s):  
Field Evaluation ◽  
In Situ Biodegradation
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