Polychlorinated biphenyls (PCBs) and dioxins are known as neurotoxic compounds that may modulate sex steroid hormones. Steroid hormones play a mediating role in brain development and may influence behaviors that show sex differences, such as childhood play behavior. In this study we evaluated the effects of perinatal exposure to environmental levels of PCBs and dioxins on childhood play behavio...

D. Richard Blidberg, Autonomous Undersea Systems Institute 86 Old Concord Turnpike, Lee, NH 03824 phone (603) 868--3221 fax (603) 868--3283 [email protected] http://www.ausi.org Roy M. Turner Department of Computer Science, University of Maine, Orono, ME 04469-5752 phone (207) 581-3909 fax (207) 581-4977 email [email protected] Elise H. Turner Department of Computer Science, University of Main...

phosphate, polycarboxylate, zinc oxide-eugenol and glass-ionomer products and the characteristics of these cements have been examined by several investigators2-5). In our previous investigation6), a decrease in compressive and diametral tensile strength was observed following 12 months immersion in distilled water with zinc phosphate, polycarboxylate and glass ionomer cements for luting, contai...

An absolute shielding scale is proposed for (207)Pb nuclear magnetic resonance (NMR) spectroscopy. It is based on ab initio calculations performed on an isolated tetramethyllead Pb(CH3)4 molecule and the assignment of the experimental resonance frequency from the gas-phase NMR spectra of Pb(CH3)4, extrapolated to zero density of the buffer gas to obtain the result for an isolated molecule. The ...

A highly potent derivative of doxorubicin, 2-pyrrolinodoxorubicin (AN-201), was linked to [D-Lys6]luteinizing hormone-releasing hormone (LH-RH) to form a cytotoxic analogue, AN-207, that can be targeted to LH-RH receptors. The effects of AN-207 were investigated in MDA-MB-435 human estrogen-independent breast carcinomas, which express LH-RH receptors. In experiment 1, nude mice bearing orthotop...

Individuals commonly adjust joint stiffness in response to changes in environmental and task demands. The objective of the present study was to evaluate the contribution of muscular cocontraction and eccentric activity to this adjustment. In all, 30 healthy volunteers participated in the present study. The authors indirectly manipulated elbow stiffness by modifying (a) the frequency of forearm ...

An Unattainable Salvation Dirt, Danger & Domesticity in Old New York It was 1832, and in the Five Points area of New York, a great street excavation was under way. What would cause such a flurry over the cobbles? Here, shovels plied the earth decades before the subway tunneled beneath the crowded streets. Electrical poles and telegraph lines had yet to become a nuisance worthy of inhumation. No...