Zobrazeno 1 - 9
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pro vyhledávání: '"E N Haran"'
Autor:
E. N. Haran
Publikováno v:
R&D Management. 11:135-138
This article describes a planning tool which can help the decision maker both during the early stages of project evaluation and later, when selecting extension alternatives. An algebraic expression is derived for ranking the alternatives by their mis
Autor:
W A Wakeham, E N Haran
Publikováno v:
Journal of Physics E: Scientific Instruments. 15:839-842
The paper describes the design, construction and use of a new set of cells for the measurement of the thermal conductivity of gases over a wide temperature range from 77K to 520K by the transient hot-wire method. The design eliminates deficiencies in
Autor:
E. N. Haran
Publikováno v:
Review of Scientific Instruments. 59:2059-2062
Preliminary experiments reported in 1983 suggested that the density of a known gas could be determined, in principle, by measuring the alternating pressure of an acoustic field set up in the gas. A density measuring cell has now been developed that i
Publikováno v:
Journal of Applied Polymer Science. 9:3505-3518
Dielectric measurements were utilized in the investigation of the polymerization of epoxy resin Epon 826 with diethylenetriamine (DETA) as the crosslinking agent. The time variation of the dissipation factor and of the dielectric constant were measur
Autor:
E N Haran
Publikováno v:
Journal of Scientific Instruments. 38:273-277
A stable fluorimeter, easily operated and serviced, has been developed. Drifts are reduced to a minimum by measuring only the alternating component of the fluorescent light. The exciting ultra-violet radiation is held at a constant level by a special
Autor:
E N Haran
Publikováno v:
Journal of Physics E: Scientific Instruments. 4:987-989
A parallel-plate gas capacitor is described which may be used as a high-temperature dielectric constant measuring cell or as a temperature-stable capacitance standard. It has two interleaving stacks of circular disks that are supported by a fused sil
Autor:
E. N. Haran
Publikováno v:
Review of Scientific Instruments. 37:523-524
Publikováno v:
Chemical Physics Letters. 1:475-476
Publikováno v:
Transactions of the Faraday Society. 67:44
An instrument for the direct measurement of dielectric constant differences between gases of similar polarity is described. The method is based on the pressure dependence of the frequency ratio between two LC oscillators, the capacitive cell of each