نتایج جستجو برای: n20
تعداد نتایج: 393 فیلتر نتایج به سال:
Somatosensory, visual and brainstem auditory evoked potentials were recorded in 10 unpremedicated patients anaesthetized with isoflurane in oxygen. Recordings were made at 0.5%, 1.1% and 1.65% (six patients) end-tidal isoflurane concentration. There were statistically significant increases in the latencies of the somatosensory (N20), visual and brainstem auditory potentials (waves III and V) wi...
Upper Atmosphere Research Satellite tropical wind and constituent measurements are used to estimate an upper limit of mid-latitude to tropical trace gas exchange by examining the phase of the N20/CH 4 ratio with respect to the Quasi-Biennial Oscillation winds. Assuming a simple diffusive model for tropical mid-latitude exchange in the 20-28 km region, the mixing times are estimated to be at lea...
By means of Auger electron spectroscopy (AES) we have monitored the room temperature adsorption of 02 and N20 on the clean Si(0 0 1)2 x I surface. We have found, for the first time, a significant variation in the intensity ratio of the K Lt L~ and K L23 L23 O Auger lines in the submonolayer range. This variation can be related to a change in bonding configuration of the oxygen atom/molecule in ...
Movement sensitive giant neurons in the lobula plate of the fly (H,-neurons, V-neurons) are affected by low con centrations of volatile anesthetics (halothane, N20): the spike frequency generated by motion in the preferred di rection decreases, that in the opposite direction increases. This means that the response to the motion stimulus de fined as the spike frequency modulation decreases. H...
Positionally dependent fractionation factors for the photolysis of isotopomers of N20 in natural abundance have been determined by high resolution FTIR spectroscopy at three photolysis wavelengths. Fractionation factors show clear lSN position and photolysis wavelength dependence and are in qualitative agreement with theoretical models but are twice as large. The fractionation factors increase ...
The paper combines grid-level data of eight emission types – CO2, N20, CH4, NH3, NOX, PM10, PM2.5, and SO2 with sub-national economic to create a 1995–2015 balanced panel for NUTS 2 regions in EU countries. Regions on average show decoupling emissions from output but most the reductions are achieved before 2008 financial crisis. Post 2008, very weak even coupling can be observed. Using OECD’s E...
This paper explores long wave theory, including Kondratieff’s theory of cycles in production and relative prices; Kuznets’ theory of cycles arising from infrastructure investments; Schumpeter`s theory of cycles due to waves of technological innovation; Goodwin`s theory of cyclical growth based on employment and wage share dynamics; Keynes – Kaldor – Kalecki demand and investment oriented theori...
A Fakoya, H Lamba, N Mackie, R Nandwani, A Brown, EJ Bernard, C Gilling-Smith, C Lacey, L Sherr, P Claydon, S Wallage and B Gazzard British HIV Association (BHIVA), BHIVA Secretariat, Mediscript Ltd, 1 Mountview Court, 310 Friern Barnet Lane, London N20 OLD, British Association for Sexual Health and HIV (BASHH), Royal Society of Medicine, 1 Wimpole Street, London W1G OAE and Faculty of Sexual a...
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