Results 251 to 260 of about 6,363,211 (303)
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Spectral Characteristics of Acylsilanes
Spectroscopy Letters, 1978Abstract The spectra of a series of aliphatic and aromatic acylsilanes were recorded using ir, uv, 1H, 13C, and 29Si nmr techniques. The spectra of analogous ketones and an amide and phosphamide were also recorded to permit direct comparison. The silanes consistently exibited a downfield shift of 30 ppm for the 13C nmr carbonyl resonances relative to ...
Edward M. Dexheimer +2 more
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Spectral characteristics of heterostructures
Solar Energy Materials and Solar Cells, 1997Abstract We have examined the current-voltage characteristic of i-a-Si:H n-c-Si heterojunction Schottky solar cells in the dark and under different illumination (spectrum AM 1.5) intensities as well as the voltage- and temperature-dependent spectral response of these devices.
S. Gall +3 more
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Spectral and spectral-polarization characteristics of potato leaves
Journal of Applied Spectroscopy, 2000The results of laboratory investigations of the spectral and spectral-polarization characteristics of radiation reflected from the leaves of potato(Solanum tuberosum) of different varieties are discussed. During the vegetation season of 1997, the angular dependence of the degree and azimuth of polarization of radiation reflected from potato leaves as ...
B. I. Belyaev +4 more
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Spectral characteristics of surface‐layer turbulence
Quarterly Journal of the Royal Meteorological Society, 1972AbstractThe behaviour of spectra and cospectra of turbulence in the surface layer is described within the framework of similarity theory using wind and temperature fluctuation data obtained in the 1968 AFCRL Kansas experiments. With appropriate normalization, the spectra and cospectra are each reduced to a family of curves which spread out according to
JC KAIMAL, JC WYNGAARD, Y IZUMI, OR COTE
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Spectral and Temporal Characteristics of Vowels in Konkani
Indian Journal of Otolaryngology and Head & Neck Surgery, 2021The present study was undertaken to study the acoustic characteristics of vowels using spectrographic analysis in Mangalorean Catholic Konkani dialect of Konkani spoken in Mangalore, Karnataka, India. Recordings were done using CVC words in 11 males and 19 females between the age range of 18-55 years.
Dhanshree R, Gunjawate +3 more
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Spectral Characteristics of Waveguide Systems
Computational Mathematics and Modeling, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Spectral characteristics of phytochrome in vivo and in vitro
Planta, 1978The absorption maximum of the far-red absorbing form of phytochrome in the difference spectrum for phototransformation (Pfr λmax) was investigated in vivo and in in vitro pellets from dark grown Hordeum vulgare L. primary leaves. Exposure of pellets in Honda medium from tissue pre-irradiated with red light to far red light gave a Pfr λmax of 734 nm, a ...
R E, Kendrick, N, Roth-Bejerano
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Spectral characteristics of normal breath sounds
Journal of Applied Physiology, 1981An objective and accurate measurement and characterization of breath sounds was carried out by a fast-Fourier-transform frequency-domain analysis. Normal vesicular breath sounds, picked up over the chest wall of 10 healthy subjects showed a characteristic pattern: the power of the signal decreased exponentially as frequency increased.
N, Gavriely, Y, Palti, G, Alroy
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Spectral characteristics of resonant link inverters
PESC `92 Record. 23rd Annual IEEE Power Electronics Specialists Conference, 1993The limitations on the operating frequency of hard-switched and resonant-link inverters are studied. The maximum operating frequency of a hard-switched inverter is found to be well defined by the allowed power dissipation and the switching losses. For resonant link inverters the upper limit is not so well defined and depends on a trade-off between a ...
S.J. Finney, T.C. Green, B.W. Williams
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The spectral characteristics of postural sway behaviour
European Journal of Applied Physiology and Occupational Physiology, 1982To determine whether recognisable profiles of sway behaviour are characteristically found among normal subjects the energy content of a contiguous series of bandwidths were computed from power density spectra of the sway behaviour of 29 young men and 29 young women.
R W, Soames, J, Atha
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