David M. Bloom

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  • John M Vlissides, Mark A Linton, David M Ungar, David M Bloom
  • 1990
a dissertation submitted to the department of electrical engineering and the committee on graduate studies of stanford university in partial fulfillment of the requirements for the degree of doctor of philosophy ii I certify that I have read this thesis and that in my opinion it is fully adequate, in scope and in quality, as a dissertation for the degree of(More)
PURPOSE Current neural prostheses use electricity as the mode of stimulation, yet information transfer in neural circuitry is primarily through chemical transmitters. To address this disparity, this study was conducted to devise a prototype interface for a retinal prosthetic based on localized chemical delivery. The goal was to determine whether fluidic(More)
When the multi-channel cochlear implant electrode is inserted into the scala tympani through the round window the operation is best performed via a posterior tympanotomy. The view of the round window membrane, however, is incomplete because of its orientation and the fact that it has a conical shape. Nevertheless, a good view along the basal turn is(More)
Micromachining has pushed the limits of photolithography in the vertical direction. We demonstrate a new technique for producing structures in thick photoresists, with excellent contact alignment and high aspect ratios using a standard UV source. In this technique, we exposed the resist from the bottom by defining the mask as part of the substrate. By doing(More)
BACKGROUND Various modalities have been advocated and practiced to maximize the effectiveness of treatment for chronic subdural hematoma. Most patients with chronic subdural hematoma are successfully treated with simple burr-hole evacuation and external drainage. Hematomas with thick membranes have been found to persist or recur, sometimes necessitating(More)
1. According to a currently popular biological hypothesis schizophrenic symptoms are caused by a hyperactivity in dopaminergic neurotransmission. Since cholecystokinin (CCK) is a neuromodulator of dopaminergic neurotransmission, the effects of CCK (0.3 microgram/kg; given in a single dose intravenously) were studied in six chronic paranoid schizophrenic(More)
  • R J J Y Lee, S Loo, V I Livingston, J B Jones, H W Lewis, G L Yen +59 others
  • 2010
of the generated CS signal, the optical spectrum presents two phase-locked carriers, which are 26.75 GHz apart. Curves B and C are the spectrums of the two demultiplexed phase-locked carriers and curve D is the spectrum of the phase shifted CS signal. The phase shifting performance of the proposed photonic RF phase shifter was measured by rotating the WP in(More)