Trichloroethylene (TCE) is a volatile chlorinated organic compound that is commonly used as a solvent for lipophilic compounds. Although recognized as an animal carcinogen, TCE's carcinogenic potential in humans is still uncertain. We have carried out a cross-sectional study of 80 workers exposed to TCE and 96 unexposed controls matched on age and sex in Guangdong, China to study TCE's early bi...

The toxicity of trichloroethene (TCE) likely restricts microbial activity in close vicinity of a TCE dense nonaqueous phase liquid (DNAPL). This study examined the distribution of a dechlorinating community in relation to the distance from a TCE DNAPL using a diffusion-cell set-up. Subcultures of the KB-1(™) culture dechlorinating TCE to cis-dichloroethene and grown with either formate or lacta...

The involvement of the chemotaxis gene cluster 1 (cheYZABW) and cheR in repellent responses of Pseudomonas aeruginosa to trichloroethylene (TCE) is described and three methyl-accepting chemotaxis proteins (MCPs) for TCE are identified. TCE chemotaxis assays of a number of deletion-insertion mutants of P. aeruginosa PAO1 revealed that the chemotaxis gene cluster 1 and cheR are required for negat...

The objective of this study was to develop the single-well push–pull test as a diagnostic tool for assessing the potential for cation exchange to adversely affect the phase behavior of sodium Ž . dihexyl sulfosuccinate surfactant Aerosol MA 80-I and its solubilization of trichloroethene Ž . TCE in the subsurface. Laboratory push–pull tests were conducted on a model natural aquifer sediment coll...

A major focus in the study of metabolism and disposition of trichloroethylene (TCE) is to identify metabolites that can be used reliably to assess flux through the various pathways of TCE metabolism and to identify those metabolites that are causally associated with toxic responses. Another important issue involves delineation of sex- and species-dependent differences in biotransformation pathw...

We submit that the central managerial messages of transaction cost economics (TCE) have been lost ormisconstrued in academic debates thatmiss the underpinning logic of the theory. Critiques of TCE are often based on narrow and selective interpretations, indeed caricatures. Our goal is to set the record straight by examining TCE’s fundamentally constructive aims, logic, and its applicability in ...

The relationship between the concentration of trichloroethylene (TCE) in the brain and changes in brain function, indicated by the amplitude of steady-state pattern-elicited visual evoked potentials (VEP), was evaluated in Long-Evans rats. VEPs were recorded from visual cortex following stimulation of the eyes and, thus, reflect the function of the afferent visual pathway and, in broad terms, m...

Photocatalytic degradation of trichloroethylene (TCE) over Pt/Pd-doped TiO2 was conducted to investigate the effect of Pt and Pd on the TCE egradation and on the yields of dichloroacetyl chloride (DCAC) and phosgene. In the presence of Pt and Pd, the degradation of TCE was retarded; specially Pd had a significantly negative effect on TCE degradation, which was ascribed to the intercalation of P...

A biological process for remediation of groundwater contaminated with tetrachloroethylene (PCE) and trichloroethylene (TCE) can only be applied if the transformation products are environmentally acceptable. Studies with enrichment cultures of PCE- and TCE-degrading microorganisms provide evidence that, under methanogenic conditions, mixed cultures are able to completely dechlorinate PCE and TCE...

i am going to assess shortcomings of transaction cost economics (tce) of oliver williamson. my argument is that this analysis suffers from misidentification of the relevant problem of the theory, analytical incoherence, inconsistent empirical support and methodological defects. in formulating coase's fundamental idea, williamson accepts an efficient equilibrium which occurs once forever, t...