Results 171 to 180 of about 75,649 (204)
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Biomonitoring Equivalents for DDT/DDE
Regulatory Toxicology and Pharmacology, 2011Biomonitoring Equivalents (BEs) are defined as the concentration or range of concentrations of a chemical or its metabolite in a biological medium (blood, urine, or other medium) that is consistent with an existing health-based exposure guideline such as a reference dose (RfD) or tolerable daily intake (TDI).
Kirman, Christopher R. +4 more
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DDE Remediation and Degradation
2008DDT and its metabolites, DDD and DDE, have been shown to be recalcitrant to degradation. The parent compound, DDT, was used extensively worldwide starting in 1939 and was banned in the United States in 1973. The daughter compound, DDE, may result from aerobic degradation, abiotic dehydrochlorination, or photochemical decomposition.
John E, Thomas +2 more
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Applied Numerical Mathematics, 2001
The background of a Matlab procedure, dde234, to solve delay differential equations (DDEs) with constant delays is described. The main features of this new procedure are discontinuity tracking and event location. Runge-Kutta triples are extended in order to solve with them DDEs.
Shampine, L. F., Thompson, S.
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The background of a Matlab procedure, dde234, to solve delay differential equations (DDEs) with constant delays is described. The main features of this new procedure are discontinuity tracking and event location. Runge-Kutta triples are extended in order to solve with them DDEs.
Shampine, L. F., Thompson, S.
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High Performance Polymers, 2007
The chemistry and properties of polymers containing the “fire smart” moiety 1,1-dichloro-2,2-diphenylethene (DDE) are described. These polymers are typically derived from the bisphenol of chloral (bisphenol-C/BPC) and are low cost, easily processed, and have good mechanical properties and toughness under normal conditions.
Richard E. Lyon +7 more
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The chemistry and properties of polymers containing the “fire smart” moiety 1,1-dichloro-2,2-diphenylethene (DDE) are described. These polymers are typically derived from the bisphenol of chloral (bisphenol-C/BPC) and are low cost, easily processed, and have good mechanical properties and toughness under normal conditions.
Richard E. Lyon +7 more
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Anais do XVI Simpósio Brasileiro de Engenharia de Software (SBES 2002), 2002
Este artigo apresenta uma ferramenta para edição de domínios do Sistema Transformacional Draco, denominada Draco Domain Editor. No ST Draco, um domínio é definido por uma Linguagem e esta por sua vez é formada por: uma gramática, um parser e Prettyprinter, ou unparser, definidos a partir dessa gramática. A ferramenta DDE facilita a edição destas partes
Vinicius Cardoso Garcia +4 more
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Este artigo apresenta uma ferramenta para edição de domínios do Sistema Transformacional Draco, denominada Draco Domain Editor. No ST Draco, um domínio é definido por uma Linguagem e esta por sua vez é formada por: uma gramática, um parser e Prettyprinter, ou unparser, definidos a partir dessa gramática. A ferramenta DDE facilita a edição destas partes
Vinicius Cardoso Garcia +4 more
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Frontiers of Mathematics in China, 2009
The delay differential equation \[ x'(t)=f(t,x(t),x(t-\tau)) \tag{1} \] is considered, where \(f:\mathbb{R}\times \mathbb{R}^n\to \mathbb{R}^n\) and \(\tau>0\). For this equation there are given both local and global existence theorems for periodical solutions.
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The delay differential equation \[ x'(t)=f(t,x(t),x(t-\tau)) \tag{1} \] is considered, where \(f:\mathbb{R}\times \mathbb{R}^n\to \mathbb{R}^n\) and \(\tau>0\). For this equation there are given both local and global existence theorems for periodical solutions.
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DDT and DDE content of human tissues
Forensic Science, 1972Abstract In 1968–1969 determinations of DDT and DDE were made in the subcutaneous and perirenal fatty tissues, liver and brain from autopsies of persons who had had no professional contact with chlorinated hydrocarbons. The contents of DDT and DDE were measured in 96 samples by gas chromatography. Retentions of unchanged DDT in the fatty subcutaneous
M, Trojanowska +4 more
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DDE Poisoning in an Adult Bald Eagle
Journal of Wildlife Diseases, 1997A 12-year-old female bald eagle (Haliaeetus leucocephalus) was found in May 1993 on Santa Catalina Island, California (USA), in a debilitated condition, exhibiting ataxia and tremors; it died within hours. On necropsy, the bird was emaciated but had no evidence of disease or physical injury.
D K, Garcelon, N J, Thomas
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2012
The present work aims to investigate the usage of embedded regions of turbulent flow simulation near to the point of separation; towards an approach whereby discrete regions of turbulent resolving techniques are used within a domain predominantly solved using the RANS equations.
Ashton, N +3 more
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The present work aims to investigate the usage of embedded regions of turbulent flow simulation near to the point of separation; towards an approach whereby discrete regions of turbulent resolving techniques are used within a domain predominantly solved using the RANS equations.
Ashton, N +3 more
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Applied Numerical Mathematics, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Thompson, S., Shampine, L. F.
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Thompson, S., Shampine, L. F.
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