BACKGROUND Recent meta-analyses demonstrate an association between self-reported residential pesticide use and childhood leukemia risk. Self-reports may suffer from recall bias and provide information only on broad pesticide categories. We compared parental self-reported home and garden pest treatments to pesticides measured in carpet dust. METHODS Parents of 277 children with leukemia and 30...

Adsorbents presenting high adsorption capacity, fast rate, easy regeneration, and a good possibility for reusability are ideal removing 4-chloro-2-methyl-phenoxyacetic acid (MCPA) or other pesticides from wastewater. Here, the effects of regeneration treatments on adsorption–desorption cycles examined using two commercial activated carbons (ACs) (Merck Norit 1240 X). MCPA was Merck ACs in powde...

2-methylphenoxyacetic acid (2-MPA), 2-methyl-4-chlorophenxyacetic acid (MCPA) and 4-chlorophenoxyacetic acid (4-CPA) were imprinted to investigate the cross-selectivities of molecularly imprinted polymers (MIPs). The result indicates that 2-MPA, which is similar in shape, size and functionality with phenoxyacetic herbicides, are suitable to be used as a suitable template to prepare the MIPs for...

The Vejen Landfill leachate plume was characterized in detail in 1989 in terms of redox zones and distribution of organic pollutants. Strong natural attenuation was observed for most organic compounds in the strongly anaerobic part of the plume. A visit to the plume 10 years later revealed that the NVOC plume had spread further, but that most of the chemical compounds still were attenuated in t...

Since the discovery of the herbicidal action of growth regulators such as 2,4-dichlorophenoxyacetic acid (2,4-D), there has been much information obtained concerning the herbicidal mechanism. The action of 2,4-D on organization, physiology and chemical changes of cells and tissues has been studied (6, 7, 8, 9, 10). Several experimenters (2, 5, 6, 9) on different plants have found that 2,4-D ind...

The MRI environment restricts the types of populations and tasks that can be studied by cognitive neuroscientists (e.g., young infants, face-to-face communication). FNIRS is a neuroimaging modality that records the same physiological signal as fMRI but without the constraints of MRI, and with better spatial localization than EEG. However, research in the fNIRS community largely lacks the analyt...

Recently the nonlocal coherent-potential approximation (NLCPA) has been introduced by Jarrell and Krishnamurthy for describing the electronic structure of substitutionally-disordered systems. The NLCPA provides systematic corrections to the widely used coherent-potential approximation (CPA) whilst preserving the full symmetry of the underlying lattice. Here an analytical and systematic numerica...