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Showing 25 to 36 of 1001 entries
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The visual word form area: expertise for reading in the fusiform gyrus.

Trends in cognitive sciences

McCandliss BD, Cohen L, Dehaene S.
PMID: 12860187
Trends Cogn Sci. 2003 Jul;7(7):293-299. doi: 10.1016/s1364-6613(03)00134-7.

Brain imaging studies reliably localize a region of visual cortex that is especially responsive to visual words. This brain specialization is essential to rapid reading ability because it enhances perception of words by becoming specifically tuned to recurring properties...

Leaky-mode loss of the second propagating mode in single-mode fibers with index well profiles.

Applied optics

Tomita A, Cohen LG.
PMID: 18223778
Appl Opt. 1985 Jun 01;24(11):1704-7. doi: 10.1364/ao.24.001704.

Radiation loss characteristics are calculated for the first two LP modes of a double-clad lightguide structure in which the inner cladding forms a low refractive-index well between the core and the outer cladding. The higher-order mode is defined to...

Characterization of the performance of optical amplitude-shift keying-differential phase-shift keying orthogonally modulated signals.

Optics letters

Deng N, Chan CK, Chen LK.
PMID: 15865365
Opt Lett. 2005 Apr 15;30(8):818-20. doi: 10.1364/ol.30.000818.

We analytically investigate the signal performance of orthogonal modulation with slow amplitude-shift keying (ASK) data superimposed upon a high-speed differential phase-shift keying (DPSK) signal. The receiver sensitivities for both the ASK and the demodulated DPSK signals are formulated based...

Little salt spring, Florida: a unique underwater site.

Science (New York, N.Y.)

Clausen CJ, Cohen AD, Emiliani C, Holman JA, Stipp JJ.
PMID: 17813360
Science. 1979 Feb 16;203(4381):609-14. doi: 10.1126/science.203.4381.609.

Little Salt Spring in southwest Florida, consisting of a shallow, water-filled basin above a deep, vertical underwater cavern, was a freshwater cenote in the peninsula's drier past. It collected and preserved perishable organic artifacts and other evidence of Paleo-Indian...

THE CALORIGENETIC ACTION OF THYROXIN AT DIFFERENT LEVELS OF BASAL METABOLISM IN MYXEDEMA.

The Journal of clinical investigation

Thompson WO, Thompson PK, Brailey AG, Cohen AC.
PMID: 16693869
J Clin Invest. 1929 Aug;7(3):437-63. doi: 10.1172/JCI100237.

No abstract available.

Spin relaxation by transient monopolar and bipolar optical orientation.

Physical review letters

Murdin BN, Litvinenko K, Clarke DG, Pidgeon CR, Murzyn P, Phillips PJ, Carder D, Berden G, Redlich B, van der Meer AF, Clowes S, Harris JJ, Cohen LF, Ashley T, Buckle L.
PMID: 16606292
Phys Rev Lett. 2006 Mar 10;96(9):096603. doi: 10.1103/PhysRevLett.96.096603. Epub 2006 Mar 10.

We have used two-color time-resolved spectroscopy to measure the relaxation of electron spin polarizations in a bulk semiconductor. The circularly polarized pump beam induces a polarization either by direct excitation from the valence band, or by free-carrier (Drude) absorption...

A conclusive demonstration of vibrational pumping under surface enhanced Raman scattering conditions.

The journal of physical chemistry. B

Maher RC, Etchegoin PG, Le Ru EC, Cohen LF.
PMID: 16800474
J Phys Chem B. 2006 Jun 22;110(24):11757-60. doi: 10.1021/jp060306d.

We provide a conclusive demonstration of vibrational pumping under Surface Enhanced Raman Scattering (SERS) conditions by performing anti-Stokes/Stokes ratio measurements over a large spatial area and low power density, down to 10 K with dried silver colloids, the dye...

Analysis of the effects of chitosan on inflammation, angiogenesis, fibroplasia, and collagen deposition in polyvinyl alcohol sponge implants in rat wounds.

Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair Society

Diegelmann RF, Dunn JD, Lindblad WJ, Cohen IK.
PMID: 17129347
Wound Repair Regen. 1996 Jan-Mar;4(1):48-52. doi: 10.1046/j.1524-475X.1996.40109.x.

Chitosan is a large molecular weight, positively charged polysaccharide extracted and purified from the chitin of crab shells. This compound has been shown to have hemostatic activity and has been suggested for use as a topical agent in tissue...

Differential effects of active and passive laboratory stressors on immune function in healthy men.

International journal of behavioral medicine

Zakowski SG, Cohen L, Hall MH, Wollman K, Baum A.
PMID: 16250811
Int J Behav Med. 1994;1(2):163-84. doi: 10.1207/s15327558ijbm0102_4.

The immunomodulatory effects of acute laboratory stressors were examined by comparing active and passive stressors in a between-subjects design. Healthy male volunteers (N = 67) were recruited and randomly assigned to an active, passive, or no stressor condition. Subjects...

The influence of external factors on pulmonary tuberculosis.

American review of tuberculosis

COHEN AC.
PMID: 14790233
Am Rev Tuberc. 1950 Nov;62(5):539-42. doi: 10.1164/art.1950.62.5.539.

No abstract available.

Transmission characteristics of three corning multimode optical fibers.

Applied optics

Cherin AH, Cohen LG, Holden WS, Burrus CA, Kaiser P.
PMID: 20134690
Appl Opt. 1974 Oct 01;13(10):2359-64. doi: 10.1364/AO.13.002359.

The loss spectra, refractive-index profiles, numerical apertures, and pulse dispersion characteristics of three multimode optical fibers made by Corning Glass Works have been measured at Bell Laboratories. The lowest transmission loss, 4.3-6.8 dB/km, was observed at 1.06-microm wavelength; in...

Pulse transmission measurements for determining near optimal profile gradings in multimode borosilicate optical fibers.

Applied optics

Cohen LG.
PMID: 20165269
Appl Opt. 1976 Jul 01;15(7):1808-14. doi: 10.1364/AO.15.001808.

Dispersive differences between B(2)O(3) and SiCO(2) constituents make nonparabolic profiles optimal equalizers of intermodal group delays in fibers with graded B(2)O(3)-SiO(2) cores and uniform B(2)O(3)-SiO(2) cladding. Pulse dispersion measurements were correlated with profile shapes in a systematic study of...

Showing 25 to 36 of 1001 entries