Zobrazeno 1 - 10
of 44
pro vyhledávání: '"N. B. Simpson"'
Autor:
Anthony Ormerod, Neil H. Cox, N B Simpson, A Bowser, L.G. Millard, Mark Goodfield, J. C. Mcmillan
Publikováno v:
British Journal of Dermatology. 162:1172-1179
Department of Dermatology, Leeds General Infirmary, Leeds LS1 3EX, U.K. *Department of Dermatology, Cumberland Infirmary, Carlisle CA2 7HY, U.K. Independent Acne Patient Advisor, Belfast City Hospital, Belfast BT9 7AB, U.K. Department of Dermatology,
Publikováno v:
Journal of Modern Optics. 43:2485-2491
We numerically model the axial trapping forces within optical tweezers arising from Laguerre–Gaussian laser modes. For an 8 μm diameter sphere suspended in water, the higher-order modes produce an axial trapping force several times larger than tha
Publikováno v:
Physical Review A. 54:R3742-R3745
Second-harmonic generation has been obtained by the use of Laguerre-Gaussian beams in a variety of mode orders. Each mode becomes doubled in frequency and transformed to a higher order. We show this to be a consequence of the phase-matching condition
Publikováno v:
American Journal of Physics. 64:77-82
We outline an easily reproduced experiment that allows the student to investigate the intensity and phase structure of transverse laser modes. In addition to discussing the usual Hermite–Gaussian laser modes we detail how Laguerre–Gaussian laser
Autor:
M J D, Goodfield, N H, Cox, A, Bowser, J C, McMillan, L G, Millard, N B, Simpson, A D, Ormerod
Publikováno v:
The British journal of dermatology. 162(6)
Publikováno v:
Clinical and Experimental Dermatology. 18:17-20
Summary To assess the effectiveness of a case note audit in two dermatology units, the efiect of policy changes in clinical practice, made following the identification of deficiencies in practice by an initial audit in 1987, were evaluated 2 years la
Autor:
S. Macdonald-Hull, N. B. Simpson, William J. Cunliffe, B. R. Hughes, R. T. Calvert, J. A. Gray, C. J. Burnside
Publikováno v:
Journal of Dermatological Treatment. 1:285-288
OBJECTIVE To determine the relative cost effectiveness of long term rotational antibiotics and isotretinoin for moderate/severe acne over a 5-year period.DESIGN Retrospective study of pairs of patients matched for age, sex, acne severity and duration
Autor:
Marius Rademaker, Richard Fleming, J. R. T. Coutts, N. B. Simpson, Johannes Gudmundsson, M. Bonduelle
Publikováno v:
Journal of Dermatological Treatment. 1:289-292
Gonadotrophin releasing hormone analogues (GnRH-A) suppress ovarian activity resulting in lowering of plasma oestrogens and androgens of ovarian origin, thus reducing androgen drive to target organs in the skin. They may be of value in the treatment
Autor:
William J. Cunliffe, N. B. Simpson
Publikováno v:
Rook's Textbook of Dermatology, Seventh Edition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d72ed0bd6f87dc98cf46901ef90d0502
https://doi.org/10.1002/9780470750520.ch43
https://doi.org/10.1002/9780470750520.ch43
Publikováno v:
CLEO '97., Summaries of Papers Presented at the Conference on Lasers and Electro-Optics.
The standard configuration for an optical tweezers arrangement uses a fundamental TEM0.0 laser mode as the trapping beam. However, even modest laser powers may result in damage, or “opticution,” of delicate biological samples.