L'analyse par microsonde électronique des fragments de verre volcanique, qui élimine les risques d'erreur par contamination des analyses d'échantillon total, fournit une téphrostratigraphie couvrant la période 50 000-700 000 B.P. (CM).
Identification of two substrate - controlled varnish types : a patchy varnish interspersed with silica glaze on silicified limestone and a complete varnish cover on partially - silicified limestone. Electron probe microanalysis and scanning electron
Amérique du Nord ; Analyse à la microsonde électronique ; Cendre volcanique ; Datation ; Datation radiocarbone ; Etats-Unis ; Glacier Peak ; Géochimie ; Géographie de l'Amérique ; Holocène ; Montagne ; Montana ; Quaternaire zones moyennes ; Rocky
At Sheep Mountain Bog, near Missoula, Montana a late-glacial tephra, that probably fell in late summer, is preserved in lake deposits. Sediment surrunding the ash was 14C dated to about 11,200 yr B.P. Electron-microprobe analyses of the volcanic
Cendre volcanique ; Chimie de phase ; Datation ; Etats-Unis ; Géochimie ; Géographie de l'Amérique ; Identification ; Microsonde électronique ; Minéralogie ; Mount St Helens ; Roche ; Roche volcanique ; Téphrochronologie ; Washington
petrographic and electron microprobe techniques) for numerous samples of individual layers within tephra sets W and Y to evaluate the degree of compositional variability within and between tephra layers and criteria by which to distinguish among Mount St
Between autonomy and dependence : corporate strategy, plant status, and local agglomeration in the Scottish electronics industry
Electronics ; Firm strategy ; Industry ; Innovation ; Investment ; Local economy ; Scotland ; United Kingdom
The recent development of the electronics industry in Scotland is examined with reference to the information-systems sector. It reflects the specific responses of US-multinationals to global trends in technology and markets, in particular the shift
from electromechanical to electronic products and the development of smaller computer systems.
Electronic industry, regional inequality and innovation policy in Portugal
Economic impact ; Electronics ; High-tech industry ; Industry ; Innovation ; Portugal ; Regional development ; Research and development ; Technological innovation
A janoshalmi MAFI alapfuras homoküledékeinek elektronmikroszkopos vizsgalata. (Electron microscopic investigation of the sand sediments in the core drilling of MAFI-Hungarian State Geological Institute-at Janoshalma)
The mechanical composition and surface analyses (using the electron microscope) show remarkable differences in the Quartenary series. Traces of eolian sand movement and aquaeous transport are studied.
Outsourcing, RandD and the pattern of intra-metropolitan location: the electronics industries of Madrid
Agglomeration ; Electronics ; Enterprise ; Export ; High-tech industry ; Industrial complex ; Industrial district ; Industrial location ; Madrid ; Research and development ; Spain
. Madrid's electronic industries have shown a remarkable resilience, in the face of extensive economic restructuring and the change in trade regimes that has accompanied continental integration.
The growth of an indigenous electronics industry: Scottish printed circuit boards
Electronics ; Exporting industry ; Firm strategy ; Industrial organization ; Industrial production ; Industry ; Investment ; Manufactured products ; Productivity ; Scotland ; United Kingdom
is best conceptualised as part of a wider division of labour within the regional electronics industry rather than a distinct, closely connected cluster.
Competition and collaboration in electronics : what are the prospects for Britain?
Competition ; Economic environment ; Economic restructuring ; Electronics ; Employment ; Enterprise;Firm ; Great Britain ; Industry ; Product lifecycle ; Telecommunications ; United Kingdom
The main restructuring pressures are identified and the effects in two of the principal electronics industries, namely, data processing and telecommunications, are examined. Even the very largest firms are having great difficulty in coping
The development of Sweden's RandD-intensive electronics industries: exports, outsourcing, and territorial distribution
Electronics ; Employment ; Exporting industry ; Firm strategy ; Industrial establishment ; Industrial location ; Innovation ; Production cost ; Research and development ; Sub-contracting ; Sweden
The AA. explore the relationship between RandD intensity, territorial distribution, subcontracting, and establishment performance in the RandD-intensive electronic industries. Their export performance is considered first (relationship