Results 261 to 270 of about 166,490 (310)

Relief-type diffraction grating by amorphous chalcogenide films

Applied Physics Letters, 1975
In As-Se- (S) -Ge amorphous films, a remarkable difference of chemical etching rate between the heat-treated state and the light-irradiated state has been observed. Utilizing this characteristic, a relief-type diffraction grating of the amorphous film was obtained (the pitch between grating lines, 0.86 μm).
Yasushi Utsugi, Sakae Zembutsu
openaire   +1 more source

Semitransparent mask technique for relief type surface topographies

Microelectronic Engineering, 1995
Semitransparent mask photolithography can be used for the generation of relief type surfaces with only a single photolithographic exposure. An electron beam lithography process for the fabrication of the photomasks employed in this technique is presented.
J. Wengelink, H. Engel, W. Do¨ldissen
openaire   +1 more source

PT EMT – Portuguese Emergency Medical Team Type 1 Relief Mission in Mozambique

Prehospital and Disaster Medicine, 2021
AbstractIntroduction:The tropical cyclone Idai hit Mozambique in the city of Beira on March 15, 2019. During the following days, the Portuguese Emergency Medical Team (PT EMT) and its infrastructure deployed to Mozambique with the mission of helping local people and collaborating with the authorities.Methods:Data analyzed were collected in the period ...
Luis M. Ladeira, Ivo Cardoso, Hélder Ribeiro, João Lourenço, Raquel Ramos, Filipa Barros, Fátima Rato   +6 more
openaire   +2 more sources

Static characteristics of a piston-type pilot relief valve

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 1999
An oil hydraulic pilot relief valve was empirically investigated to fully understand its static performance. Constriction components which dominate the flow in the valve were individually examined in detail, revealing that the static relation between the pressure drop, flowrate and opening area for a constriction can be represented, not by the ...
S Washio, Y Nakamura, Y Yu
openaire   +1 more source

Un relief de type mélien trouvé à Trézène

Bulletin de correspondance hellénique, 2001
A terracotta Melian relief was found during the excavation of a Classical cemetery at Troezen. It measures 0.218 x 0.185 m, is well preserved and has traces of a white slip and polychrome paint. It depicts Heracles, Deianira and the centaur Nessus, at the moment the woman is being rescued from the threat of abduction on the banks of the Evinos river in
openaire   +2 more sources

Les types de relief exhumé en Yougoslavie

Annales de Géographie, 1955
Milojevič Bořivoje Ž. Les types de relief exhumé en Yougoslavie. In: Annales de Géographie, t. 64, n°343, 1955. pp. 170-176.
openaire   +2 more sources

Madagascar Relief and Main Types of Landscape

1972
With a length of 995 miles from Diego-Suarez to Cap Sainte-Marie and a maximum width of 360 miles, Madagascar is the third largest island in the world, coming after New Guinea and Borneo (Australia is considered to be a sub-continent).
openaire   +1 more source

Diffraction efficiency of relief-type gratings in amorphous chalcogenide films

Optics Communications, 1976
Abstract In As-Se-(S)-Ge amorphous films, the chemical etching rate between the heat treated and the light irradiated states differs as well as the optical properties do. A relief-type grating made by the etching has a high diffraction efficiency (∽15%).
Sakae Zembutsu, Yasushi Utsugi, Tomoaki Sakai   +2 more
openaire   +1 more source

Types of intra-muscular opioids for maternal pain relief in labour

1998
Pethidine is the most widely used intra-muscular opioid for the relief of labour pain. However concerns have been raised about its effectiveness and the possibility of depressing respiration in newborns.The objective of this review was to assess the effects of different opioids (and different doses of the same opioid) administered intra-muscularly in ...
D, Elbourne, R A, Wiseman
openaire   +2 more sources