Magnetic resonance imaging differences between dementia with Lewy bodies and Alzheimer's disease; a pilot study

Autor: Clive Ballard, P. Scheltens, Robert H. Perry, Julian C. Hughes, John T. O'Brien, Paul G. Ince, Ian G. McKeith, G.T. Harvey, Anil Gholkar, R C G Briel

Publikováno v: Harvey, G T, Hughes, J, McKeith, I G, Briel, R, Ballard, C, Gholkar, A, Scheltens, P, Perry, R H, Ince, P & O'Brien, J T 1999, ' Magnetic resonance imaging differences between dementia with Lewy bodies and Alzheimer's disease; a pilot study ', Psychological Medicine, vol. 29, pp. 181-187 . https://doi.org/10.1017/S0033291798007806
Psychological Medicine, 29, 181-187. Cambridge University Press

Background. Temporal lobe atrophy on magnetic resonance imaging (MRI) has been suggested as a specific diagnostic marker for Alzheimer's disease (AD). No previous comparison with dementia with Lewy bodies (DLB) has been reported.Method. T1-weighted M

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fab8a6d77c7cbfd62075a6dbf596cb8
https://doi.org/10.1017/s0033291798007806

Fiber amplifiers for undersea application

Autor: G.T. Harvey

Publikováno v: OECC/ACOFT 2008 - Joint Conference of the Opto-Electronics and Communications Conference and the Australian Conference on Optical Fibre Technology.

Undersea fiber optic systems differ greatly from terrestrial systems in terms of their overall system length and their reliability requirements. This paper discusses how these requirements affect amplifier design.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d7bf0e0419e38dd60f765075a1e73b75
https://doi.org/10.1109/oeccacoft.2008.4610584

640 Gb/s (64×12.3 Gb/s) 12,700 km RZ-DPSK WDM transmission with 75 km repeater spacing

Autor: S. Jiang, B. Bakhshi, H. Li, M. Nissov, Ekaterina A. Golovchenko, P.C. Corbett, R. Zhu, G.T. Harvey, M. Manna, S.M. Abbott, Q. Zhong

Publikováno v: 31st European Conference on Optical Communications (ECOC 2005).

Feasibility of a 640 Gb/s over 12,700 km WDM transmission is evaluated. Utilizing 75 km repeater spacing and 18 nm C-band EDFAs, this demonstration shows high potential for the next generation transpacific communication systems. (2 pages)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1c82fef2afeb9ae17c5ac2bd0d2e3b0e
https://doi.org/10.1049/cp:20050354

Packaged hybrid soliton pulse source results 70 terabit.km/sec soliton transmission

Autor: Turan Erdogan, K.W. Wecht, Herman M. Presby, L. F. Mollenauer, T. Tanbun-Ek, Paul A. Morton, G.T. Harvey, Ralph A. Logan, A.M. Sergent, Victor Mizrahi

Publikováno v: IEEE Photonics Technology Letters. 7:111-113

A packaged hybrid soliton pulse source is used in a soliton transmission experiment employing sliding-frequency guiding filters. The source shows excellent stability and very clean tuning characteristics. Control of the operating frequency and wavele

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33baf7ebadc80d2a4709558031a70b1b
https://doi.org/10.1109/68.363359

Packaged hybrid soliton pulse source results and 270 terabit.km/sec soliton transmission using sliding-frequency guiding filters

Autor: Paul A. Morton, Herman M. Presby, Linn F. Mollenauer, A.M. Sergent, Tawee Tanbun-Ek, G.T. Harvey, Turan Erdogan, Ralph A. Logan, K.W. Wecht, Victor Mizrahi

Publikováno v: Proceedings of IEEE 14th International Semiconductor Laser Conference.

Summary form only given. A fully packaged hybrid soliton pulse source is described. Excellent stability and tuning characteristics are shown. Error free soliton transmission at 10 Gbit/s is achieved over 27,000 km using sliding-frequency guiding filt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5d2972f2b12eb3d97bb9767275cac03d
https://doi.org/10.1109/islc.1994.519348