Results 221 to 230 of about 3,394,545 (251)

Fine Line Conductor Formation

Circuit World, 1992
Driven by the demand for higher density in electronic packaging, each signal plane of printed wiring board must accommodate more conductors. As a result, conductor width is becoming narrower each year. This chapter reviews some of the important steps of forming finer line conductors in printed wiring boards, such as surface preparation, plating/etching,
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The Formation of FeII Emission Lines

1988
The excitation of FeII emission lines is reviewed, with special emphasis on photoionized nebulae. The physical conditions, the geometry and the techniques required to calculate FeII models are explained and the following mechanisms discussed: a: Excitation by absorption of continuum radiation. b: Excitation by inelastic collisions, and c: Excitation by
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Line Formation in Expanding Atmospheres

1976
The current state of understanding of line formation processes in expanding atmospheres is reviewed, and the successes and limitations of current computational techniques are summarized. Some results for differential rotation are also given, although very little work has been done in this area. Special attention is given to the severe difficulties that
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Formation of FEII Lines in AGN

1988
Up to now photoionization models of the Broad Line Region of quasars fail to explain the strength of low ionization lines, in particular, FeII lines are too weak compared to H3. Using a code mainly designed to study low ionized and optically thick medium, I have calculated the radiation transfer in a non-photoionized homogeneous cloud in order to ...
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Line format and program structure

1994
A CNC program is a set of instructions that is read by the machine tool computer system to control machine slide movements, tool movements and additional miscellaneous functions. There are two types of CNC programming: conversational format and word address format.
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Line Formation in Turbulent Media

1975
Since 1934, when Struve and Elvey introduced the concept of microturbulence for spectral line broadening in addition to pressure and thermal Doppler broadening, this mechanism has frequently been used in the analysis of stellar spectra. According to the discussions in standard textbooks on stellar spectra the effect of microturbulence is due to an ...
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Computational study of nozzle spray-line distribution effects on stratified mixture formation, combustion and emissions of a high compression ratio DISI methanol engine under lean-burn condition

Energy, 2020
Changming Gong, Jingzhen Sun, Yulin Chen   +2 more
exaly  

format line

2000
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On the Formation of Squall Lines

Bulletin of the American Meteorological Society, 1952
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Non-local thermodynamic equilibrium line formation for Si  i – ii – iii in A–B stars and the origin of Si  ii emission lines in ι Her

Monthly Notices of the Royal Astronomical Society, 2020
L I Mashonkina
exaly