scholarly journals Mycoremediation of Monocyclic Aromatic Hydrocarbons by a Local Marine Aspergillus oryzae (Statistical Analysis of the Main and Substrate Interaction Effects)

2010 ◽  
Vol 45 (1) ◽  
pp. 15-29 ◽  
Keyword(s):  
Statistical Analysis ◽  
Aspergillus Oryzae ◽  
Aromatic Hydrocarbons ◽  
Interaction Effects ◽  
Substrate Interaction ◽  
Monocyclic Aromatic Hydrocarbons

Elucidation of substrate interaction effects in multicomponent systems containing 3-ring homocyclic and heterocyclic polynuclear aromatic hydrocarbons

2021 ◽  
Author(s):  
Prasenjit Ghosh ◽  
Suparna Mukherji
Keyword(s):  
Aromatic Hydrocarbon ◽  
Bacterial Growth ◽  
Aromatic Hydrocarbons ◽  
Interaction Effects ◽  
Polynuclear Aromatic Hydrocarbons ◽  
Multicomponent Systems ◽  
Polynuclear Aromatic Hydrocarbon ◽  
Substrate Interaction

Bacterial growth and degradation experiments were conducted on carbazole (CBZ), fluorene (FLU) and dibenzothiophene (DBT) individually and in various mixture combinations using an efficient polynuclear aromatic hydrocarbon (PAH) degrading bacterial...

Monocyclic Aromatic Hydrocarbons in Kathmandu During the Winter Season

2007 ◽  
Vol 191 (1-4) ◽  
pp. 71-81 ◽  
Author(s):  
Yong Yu ◽  
Arnico Panday ◽  
Elke Hodson ◽  
Bo Galle ◽  
Ronald Prinn
Keyword(s):  
Aromatic Hydrocarbons ◽  
Winter Season ◽  
Monocyclic Aromatic Hydrocarbons

scholarly journals Orthogonal contrasts: definitions and concepts

2004 ◽  
Vol 61 (1) ◽  
pp. 118-124 ◽  
Author(s):  
Maria Cristina Stolf Nogueira
Keyword(s):  
Experimental Data ◽  
Statistical Analysis ◽  
Interaction Effects ◽  
Degree Of Freedom ◽  
Extensive Review ◽  
Single Degree Of Freedom ◽  
Orthogonal Contrasts ◽  
Single Degree ◽  
Definite Structure

The single degree of freedom of orthogonal contrasts is a useful technique for the analysis of experimental data and helpful in obtaining estimates of main, nested and interaction effects, for mean comparisons between groups of data and in obtaining specific residuals. Furthermore, the application of orthogonal contrasts is an alternative way of doing statistical analysis on data from non-conventional experiments, whithout a definite structure. To justify its application, an extensive review is made on the definitions and concepts involving contrasts.

scholarly journals Practical Considerations and Challenges Involved in Surfactant Enhanced Bioremediation of Oil

2013 ◽  
Vol 2013 ◽  
pp. 1-16 ◽  
Author(s):  
Sagarika Mohanty ◽  
Jublee Jasmine ◽  
Suparna Mukherji
Keyword(s):  
Aromatic Hydrocarbons ◽  
Structural Complexity ◽  
Surface Characteristics ◽  
Polynuclear Aromatic Hydrocarbons ◽  
Micellar Solubilization ◽  
Substrate Interaction ◽  
Surfactant Interactions ◽  
Fuel Oils ◽  
Enhanced Bioremediation ◽  
Phase Liquid

Surfactant enhanced bioremediation (SEB) of oil is an approach adopted to overcome the bioavailability constraints encountered in biotransformation of nonaqueous phase liquid (NAPL) pollutants. Fuel oils containn-alkanes and other aliphatic hydrocarbons, monoaromatics, and polynuclear aromatic hydrocarbons (PAHs). Although hydrocarbon degrading cultures are abundant in nature, complete biodegradation of oil is rarely achieved even under favorable environmental conditions due to the structural complexity of oil and culture specificities. Moreover, the interaction among cultures in a consortium, substrate interaction effects during the degradation and ability of specific cultures to alter the bioavailability of oil invariably affect the process. Although SEB has the potential to increase the degradation rate of oil and its constituents, there are numerous challenges in the successful application of this technology. Success is dependent on the choice of appropriate surfactant type and dose since the surfactant-hydrocarbon-microorganism interaction may be unique to each scenario. Surfactants not only enhance the uptake of constituents through micellar solubilization and emulsification but can also alter microbial cell surface characteristics. Moreover, hydrocarbons partitioned in micelles may not be readily bioavailable depending on the microorganism-surfactant interactions. Surfactant toxicity and inherent biodegradability of surfactants may pose additional challenges as discussed in this review.

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