Results 161 to 170 of about 11,316 (222)

Assessment of the feed additive consisting of <i>Saccharomyces cerevisiae</i> NCYC R404 for dairy cows for the renewal of its authorisation (Volac International Ltd). [PDF]

EFSA J
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Villa RE, Azimonti G, Bonos E, Christensen H, Durjava M, Dusemund B, Gehring R, Glandorf B, Kouba M, López-Alonso M, Marcon F, Nebbia C, Pechová A, Prieto-Maradona M, Röhe I, Theodoridou K, Yurkov A, Anguita M, Bozzi Cionci N, Brozzi R, García-Cazorla Y, Tarrés-Call J, Valeri P, Innocenti ML.   +24 more
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Polychlorinated dibenzodioxins and polychlorinated dibenzofurans in sewage sludges

Chemosphere, 1985
Abstract A municipal sewage sludge from Syracuse, New York and a largely domestic sludge from Sodus, New York were analyzed for polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) using combined gas chromatography and high resolution mass spectrometry (GC/HRMS).
N.C.A. Weerasinghe, Michael L. Gross, Donald J. Lisk   +2 more
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Polychlorinated Dibenzodioxins and Polychlorinated Dibenzofurans

Regulatory Toxicology and Pharmacology, 1999
Polychlorinated dibenzodioxins and polychlorinated dibenzofurans (dioxins) are contaminants with long biological half-lives. The most toxic dioxin, 2,3,7,8-tetrachlorodibenzodioxin (TCDD), has a half-life in humans of 9 years. A tolerable daily intake (TDI) of 10 pg/kg body wt/day has been recommended, which was derived from steady-state concentrations
openaire   +2 more sources

Polychlorinated Dibenzodioxins and Dibenzofurans

1992
Polychlorinated dibenzodioxins (PCDD) and dibenzofurans (PCDF) — often refered to simply as “dioxins” — constitute a group of 210 closely related chemicals. They are mainly formed as byproducts in combustion or heating processes in the presence of substances containing chlorine as well as during the synthesis of chemical compounds structurally based on
J. Lebsanft, A. Basler
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Correlation of polychlorinated naphthalenes with polychlorinated dibenzofurans formed from waste incineration

Chemosphere, 2001
Isomer composition of polychlorinated naphthalenes (PCNs) was measured for municipal waste incinerator fly ash samples and for emission samples produced from soot and copper-deposit experiments conducted at the United States Environmental Protection Agency (US-EPA). Two types of PCN isomer patterns were identified.
T, Imagawa, C W, Lee
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[Polychlorinated dibenzofurans and cancer].

Giornale italiano di medicina del lavoro ed ergonomia, 2011
The aim of the present report is to review the main scientific literature about polychlorinated dibenzofurans (PCDFs) and to focus the critical aspects of their identification and assessment of exposure. The 2,3,4,7,8- Pentachlorodibenzofuran (PeCDF) has been classified as carcinogenic to humans and included in Group 1 by IARC, as there is sufficient ...
Pietro, Apostoli, Roberto, Bergonzi, Simona, Catalani   +2 more
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Polychlorinated dibenzofurans; quantitative structure activity relationships

Chemosphere, 1985
Polychlorinated dibenzofurans (PCDFs) are highly toxic industrial and combustion by-products which have been identified in diverse environmental matrices and have been implicated as etiologic agents in Yusho poisioning. The development of new synthetic routes in our laboratory has resulted in the unambiguous synthesis of over 50 purified PCDF congeners
S. Safe, T. Sawyer, G. Mason, S. Bandiera, B. Keys, M. Romkes, J. Piskorska-Pliszczynska, B. Zmudzka, L. Safe   +8 more
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Identification of chlorinated dibenzofurans in American polychlorinated biphenyls

Nature, 1975
MORTALITY of embryos has contributed to the reproductive failures of several bird species, including the sparrowhawks (Accipiter nisus) of southern Scotland1, the white-tailed eagles (Haliaeetus albicilla) of Schleswig Holstein2, and the herring gulls (Larus argentatus) of Lake Ontario3.
C W, Bowes, M J, Mulvihill, B R, Simoneit, A L, Burlingame, R W, Risebrough   +4 more
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A Toxic Equivalency Factor Scale for Polychlorinated Dibenzofurans

Fundamental and Applied Toxicology, 1994
The ethoxyresorufin O-deethylase (EROD) induction of 20 polychlorinated dibenzofurans (PCDFs) was examined in the H4IIE rat hepatoma cell bioassay. The selection of the compounds tested was based on a multivariate chemical characterization laying the groundwork for covering the whole chemical series of PCDFs.
M, Tysklind, D, Tillitt, L, Eriksson, K, Lundgren, C, Rappe   +4 more
openaire   +2 more sources