Results 271 to 280 of about 14,635,089 (316)
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Ecotoxicological effects at contaminated sites
Toxicology, 2004Contamination sites pose significant environmental hazards for terrestrial and aquatic ecosystems. They are important sources of pollution and may result in ecotoxicological effects on terrestrial, groundwater and aquatic ecosystems. At severely contaminated sites, acute effects occur, but the core problem lies in long-term chronic effects ...
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Effects of Granuloma Formation at Site of Vasovasostomy
Journal of Urology, 1988Spermatic granulomas forming after vasectomy reversal have been thought to mechanically compromise the anastomosis. We have studied the physiologic effects of vasectomy and vasovasostomy in rats. Following delayed microsurgical vasovasostomy, fluid flow through the anastomosis and cauda epididymidal hydrostatic pressure are not significantly different ...
P O, Carey +6 more
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The site of action for the convulsant effect of pentylenetetrazol
Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 1981Abstract 1. Lymnaea neutons demonstrated convulsive bursting in response to 40 mM pentylenetetrazol (PTZ) applied extracellularly but showed no response to injections calculated to bring intracellular concentrations of PTZ to 100 mM. 2. PTZ was found to permeate cell membranes. 3.
M F, Pacheco +2 more
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The Knowledge Leveling Effect of Portal Sites
Communication Research, 2014The new high-choice media environment has allowed entertainment-oriented people to avoid political news, resulting in a wider gap in political knowledge between entertainment- and news-oriented citizens. On the Internet, however, users tend to be concentrated into a handful of portal sites that offer a mixed information environment in which both news ...
Tetsuro Kobayashi, Kazunori Inamasu
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Midbrain as a Site for the Motion After-effect
Nature, 1969Electrophysiological data for directionally sensitive units in optic tectum of mammals, indicating midbrain as site for rotating spiral motion ...
W, Richards, R A, Smith
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Effect of site of pacing on dispersion of refractoriness
The American Journal of Cardiology, 1985The variation in dispersion of ventricular refractoriness with different sites of pacing was measured in 11 patients not taking antiarrhythmic drugs. Dispersion of refractoriness between 3 right ventricular sites was determined at constant paced cycle lengths (S1S1).
T D, Friehling +3 more
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On the Effectiveness of Techniques to Detect Phishing Sites
2007Phishing is an electronic online identity theft in which the attackers use a combination of social engineering and web site spoofing techniques to trick a user into revealing confidential information. This information is typically used to make an illegal economic profit (e.g., by online banking transactions, purchase of goods using stolen credentials ...
Christian Ludl +3 more
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2000
The availability of commercial devices (Diprifusor™) that provide computerised control of the plasma concentrations of propofol has focused attention on Target Controlled Infusion (TCI) techniques in anaesthesia. TCI devices can rapidly achieve and maintain any desired target concentration of a drug, and allow the target concentration to be changed ...
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The availability of commercial devices (Diprifusor™) that provide computerised control of the plasma concentrations of propofol has focused attention on Target Controlled Infusion (TCI) techniques in anaesthesia. TCI devices can rapidly achieve and maintain any desired target concentration of a drug, and allow the target concentration to be changed ...
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The effect of subsampling sites within patients
Journal of Periodontal Research, 1985In recent periodontal research, multiple sites within patients have been utilized as the primary observations or sampling units. In the present study a simple approach for the single sample case was used to demonstrate the effect of site‐specific analyses when the patient is not treated as the sampling unit. This approach was shown to underestimate the
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