Now showing items 21-30 of 161
Additive pulse mode-locking using a birefringent optical fiber
(Elsevier, 1994-01-15)
A powerful and increasingly common method to mode-lock a variety of lasers is additive pulse mode-locking (APM). In this technique, a nonlinear medium is placed in an external cavity which is coupled to the main laser ...
Multi-mode holographic waveguide coupler
(Elsevier, 1975-10)
A double-exposure thick-holographic-grating waveguide coupler is described in which two waveguide modes can be excited with a single incident beam. Single-grating decouplers are also designed to selectively remove one of ...
A parametric model of the brain vascular system for estimation of the arterial input function (AIF) at the tissue level
(Upper Saddle River, NJWiley Periodicals, Inc., 2017-05)
Evaluation of ( E )-2′-deoxy-2′-(fluoromethylene)cytidine on the 9L rat brain tumor model using MRI
(John Wiley & Sons, Ltd., 2003-04)
( E )-2′-deoxy-2′-(fluoromethylene)cytidine (FMdC), was evaluated as a potential treatment for malignant gliomas using the rat 9L brain tumor model. FMdC was shown to be an effective inhibitor of cell proliferation in ...
Nuclear-spin relaxation in paramagnetic solutions when the electronic zero-field splitting and zeeman interactions are of arbitrary magnitude
(Elsevier, 1992-12)
Expressions for the dipolar nuclear-spin relaxation rates in paramagnetic salt solutions have been derived under conditions where the electronic zero-field splitting (zfs) and Zeeman interactions are of arbitrary magnitude ...
Temperature dependence of ionization rates in AlxGa1-xAs
(Elsevier, 1971-07)
The ionization rates in AlxGa1-xAs have been measured in a temperature range from 77[deg]K to 373[deg]K for samples with various Al content. The results showed that the ionization rates decrease with both the Al content ...
Equation formulation considerations for efficient numerical modeling of semiconductor phenomena
(Elsevier, 1975-09)
This paper highlights the importance of equation formulation and associated programming efficiency with respect to modeling of semiconductor phenomena via numerical methods.Two numerical modeling efforts are developed in ...
DCE and DW‐MRI monitoring of vascular disruption following VEGF‐Trap treatment of a rat glioma model
(John Wiley & Sons, Ltd, 2012-07)
Ultrafast gating using a nonlinear Sagnac interferometer
(Elsevier, 1992-03-15)
We show theoretically and experimentally that Sagnac interferometers which include a medium which exhibits gain or absorption can be used to obtain picosecond or femtosecond optical gates with very high contrast and good ...