منابع مشابه
Plasticizers in blood--real or artifactual?
During our recent work on the identification of drugs involved in overdose cases (1, 2), we have had occasion to investigate the constituents found in blood, urine, and gastric juices by combined GC-mass spectrometry. In a surprisingly large number of cases, we have observed, in addition to any drugs present, one or more peaks corresponding to phthalate esters (PAEs). Most commonly these were d...
متن کامل3 Pharmaceutically Used Plasticizers
The extensive use of polymers in medical and pharmaceutical applications including particularly packaging, medical devices, drug carriers and coatings has caused a substantial demand for the proper plasticizers. Although there are many plasticizers used in the chemical industry, only a few of them have been approved for pharmaceutical applications. The natural-based plasticizers characterized b...
متن کاملArtifactual Agency In Open Design
We readily use artifacts in theorizing and accounting for epistemic work. Yet the agency characteristics of artifacts and notably their relations to their creators (the subjects) are less understood as agency is more socially privileged than artifactually focused. Rather than understanding the ways artifacts are appropriated as utility objects, we examine the ebb and flow of agency to account f...
متن کامل“Artifactual” arsenate DNA
The recent claim by Wolfe-Simon et al. that the Halomonas bacterial strain GFAJ-1 when grown in arsenate-containing medium with limiting phosphate is able to substitute phosphate with arsenate in biomolecules including nucleic acids and in particular DNA(1) arose much skepticism, primarily due to the very limited chemical stability of arsenate esters (see ref. 2 and references therein). A major...
متن کاملReal versus artifactual symmetry-breaking effects in Hartree-Fock, density-functional, and coupled-cluster methods.
We have examined the relative abilities of Hartree-Fock, density-functional theory (DFT), and coupled-cluster theory in describing second-order (pseudo) Jahn-Teller (SOJT) effects, perhaps the most commonly encountered form of symmetry breaking in polyatomic molecules. As test cases, we have considered two prototypical systems: the 2Sigmau+ states of D( infinity h) BNB and C3+ for which interac...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 1973
ISSN: 0091-6765
DOI: 10.2307/3428040