Results 111 to 120 of about 1,003,860 (311)
GalaxiesPerseus A (3C 84), a powerful radio source located at the centre of the giant elliptical galaxy NGC 1275—classified as a Seyfert type II AGN and the dominant member of the X-ray bright Abell 426 cluster–exhibits radio emission variability over a wide ...
Vladislavs Bezrukovs +16 more
doaj +1 more source
Air pollution and emergency admissions for cardiorespiratory diseases in Lisbon (Portugal)
Química Nova, 2010 Daily records of hospital admissions due to cardiorespiratory diseases and levels of PM10, SO2, CO, NO, NO2, and O3 were collected from 1999-2004 to evaluate the relationship between air pollution and morbidity in Lisbon.
Célia A. Alves +2 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert +7 more
wiley +1 more source
Central flashes during stellar occultations
Astronomy & AstrophysicsContext. Central flashes may occur during stellar occultations by objects in the Solar System. Aims. Catalog diffraction effects on the flash with point-like stars, monochromatic waves, and different cases of spherical transparent atmosphere; describe ...
Sicardy B., Dettwiller L.
doaj +1 more source
Atmospheric effects on the underground muon intensity [PDF]
It has previously been reported that the barometric pressure coefficient observed for muons at Poatina (vertical absorber depth 357 hg/sq cm) appears to be appreciably higher than would be expected from atmospheric absorption alone.
Fenton, A. G. +3 more
core +1 more source
Advanced Engineering Materials, EarlyView.Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel +6 more
wiley +1 more source
Atmospheric turbulence effects on aircraft noise propagation [PDF]
The Brown and Clifford model for the apparent sound attenuation cuased by atmospheric turbulence was reviewed and extended. Calculations, based on the model, were made for the predicted sound attenuation for a tower-mounted loudspeaker-type sound source ...
Chapkis, R. L.
core +1 more source
Implications of CHOOZ results for the decoupling of solar and atmospheric neutrino oscillations
, 1998 We have considered the results of solar and atmospheric neutrino oscillation experiments in the scheme of mixing of three neutrinos with a mass hierarchy.
Bilenky +13 more
core +1 more source
Advanced Engineering Materials, EarlyView.Additive manufacturing (AM) allows great geometric freedom for lightweight components. As parts are progressively optimized exploiting potentials in AM leading in smaller material cross sections, high pressure solution treating and aging (STA) treatments show an enormous potential for strongly improving material properties.
Mika León Altmann +4 more
wiley +1 more source
Modelling of atmospheric effects in solar and terrestrial radiation regimes is discussed.
core +1 more source