The common bed bug, Cimex lectularius (L.) (Hemiptera: Cimicidae) is known to become associated, from time to time, with clothing or linen. In such locations, it may escape insecticide treatment, and may be carried to new locations. We test the suggestion that laundering is sufficient to kill all life stages and thus help prevent reinfestation and dispersion. We establish minimum temperatures f...

Urban groundwater management requires a thorough and robust scientific understanding of flow transport processes. 3H/3He apparent ages have been shown to efficiently help provide important groundwater-related information. However, this type analysis is expensive as well labor- time-intensive, hence limits the number potential sampling locations. To overcome limitation, we established an inter-r...

Trichloroacetic acid (TCA), a mouse liver carcinogen, is a drinking water contaminant and a metabolite of solvents such as trichloroethylene and perchloroethylene. Because acidic drugs are often bound more strongly to human than to rodent plasma proteins, a study was undertaken to determine whether this was the case for TCA and to clarify the mechanistic bases for species differences. Equilibri...

OBJECTIVE Several case reports have linked solvent exposure to Parkinson disease (PD), but few studies have assessed associations with specific agents using an analytic epidemiologic design. We tested the hypothesis that exposure to specific solvents is associated with PD risk using a discordant twin pair design. METHODS Ninety-nine twin pairs discordant for PD ascertained from the National A...

BACKGROUND Tetrachloroethylene (PCE; or perchloroethylene) has been implicated in visual impairments among adults with occupational and environmental exposures as well as children born to women with occupational exposure during pregnancy. OBJECTIVES Using a population-based retrospective cohort study, we examined the association between prenatal and early childhood exposure to PCE-contaminate...

[1] When an inverse problem is solved to estimate an unknown function such as the hydraulic conductivity in an aquifer or the contamination history at a site, one constraint is that the unknown function is known to be everywhere nonnegative. In this work, we develop a statistically rigorous method for enforcing function nonnegativity in Bayesian inverse problems. The proposed method behaves sim...

Methods are presented that were used for assessing exposures in a cohort mortality study of 15,000 employees who held 150,000 jobs at an Air Force base from 1939 to 1982. Standardisation of the word order and spelling of the job titles identified 43,000 unique job title organisation combinations. Walkthrough surveys were conducted, long term employees were interviewed, and available industrial ...

Degradation of Askarel (PCB Blend) by Indigenous Aerobic Bacteria Isolates from Dumpsites in Ore, Ondo State.Nigeria. Nwinyi, Obinna C Department of Biological sciences, School of Natural and Applied Sciences, College of Science and Technology, Covenant University, Km 10 Idiroko Road, Canaan land PMB, Ota, Ogun State, Nigeria. Abstract: The removal of toxic industrial products such as polychlor...

Trichloroethylene (TCE) and perchloroethylene (PERC) have been reported to induce respiratory complications such as airway hyperactivity and asthma. The present study was designed to investigate their influence on smooth muscle contraction and epithelial release of prostanoids in swine trachea. Results showed that TCE and PERC exposure did not alter the basal tone of tracheal smooth muscle. How...

We describe a general approach using Bayesian analysis for the estimation of parameters in physiological pharmacokinetic models. The chief statistical diiculty in estimation with these models is that any physiological model that is even approximately realistic will have a large number of parameters, often comparable to the number of observations in a typical pharmacokinetic experiment (for exam...