Now showing items 32343-32402 of 59723

• #### Operation and efficiency of the DO Central Track Trigger ﻿

(2005)
The Central Track Trigger (CTT), a subsystem of the DO collider detector at Fermilab, plays a key role in selecting which of the 1.7 million proton-antiproton beam crossing events are written to permanent storage. In order ...
• #### Operation of the run IIB DO luminosity system and determination of the run IIB luminosity constant ﻿

(2010)
The luminosity system is an integral part of the DO detector that must be properly maintained to provide accurate luminosity measurements for physics analysis. After the addition of a readout layer to the silicon vertex ...
• #### Operation time monitor for a digital computer ﻿

(1964)
This paper is devoted to a detailed description of a device, an operation time monitor, which is used to investigate the behavior of the operation time in a digital computer. The principle employed to design the monitor ...
• #### Operations Circulation of Texan Curtailed by Board of Regents ﻿

(1965-03-25)

(1959-01)
• #### Operations research: application to the management of the construction process ﻿

(1971)
New and better solutions to management problems in the construction industry are essential if demands of contemporary society for habitat are to be met. Operations Research is defined and presented as uniquely successful ...

(1859)

(1979)
• #### Opitmal Phase Kernels for Time-Frequency Analysis ﻿

(1996-05-01)
We consider the design of kernels for time-frequency distributions through the phase, rather than amplitude, response. While phase kernels do not attenuate troublesome cross-components, they can translate them in the ...
• #### Oppenheim Wins In Jones College Special Election ﻿

(1965-09-23)
• #### Opportunity Knocked ﻿

(1959-02-06)
• #### An Opportunity Missed ﻿

(1962-10-24)
• #### The opposite effects of sodium and potassium cations on water dynamics ﻿

(2017)
Water rotational dynamics in NaSCN and KSCN solutions at a series of concentrations are investigated using femtosecond infrared spectroscopy and theory. Femtosecond infrared measurements, consistent with previous NMR ...

(2003)

(1970)
• #### Optical and Plasmonic Properties of Metallic Tip /Surface Junctions ﻿

(2011)
Reducing symmetry of plasmonic nanostructures allows more in-depth engineering for plasmonic systems to support a range of optical phenomena prohibited by traditional symmetric systems. Symmetry reduction allows for nanoscale ...
• #### Optical and Transport Properties of Nano-objects ﻿

(2015-09-01)
This dissertation presents theoretical and experimental studies on the optical and transport properties of selected nano-objects. The theoretical part of this work is particularly devoted to the study of the optical spectra ...
• #### Optical biopsy systems using ultra-slim objectives for the diagnosis of breast cancer ﻿

(2013-09-16)
One in eight women in America will develop breast cancer at some point in their lives. Breast cancer is the second deadliest form of cancer for women in the United States. When a suspicious region of the breast is detected, ...
• #### Optical characterization and in vivo assessment of charge-assembled capsules containing indocyanine green for laser-mediated diagnosis and therapy ﻿

(2008)
We have developed a carrier system to encapsulate Indocyanine Green (ICG) to overcome its limitations for laser-mediated medical applications. Charge-assembled capsules with controllable size and adjustable coatings ...
• #### Optical characterization of lithium niobate thin film waveguides sputtered on sapphire substrates ﻿

(1991)
Thin films of lithium niobate on various oriented sapphire substrates were fabricated by the rf sputtering method. Polarized He-Ne laser light with a wavelength of 6328 A was successfully coupled into the optical waveguides ...
• #### Optical characterization of single plasmonic nanoparticles ﻿

(2014)
This tutorial review surveys the optical properties of plasmonic nanoparticles studied by various single particle spectroscopy techniques. The surface plasmon resonance of metallic nanoparticles depends sensitively on the ...
• #### Optical Contrast Agents to Distinguish Benign Inflammation from Neoplasia in Epithelial Tissues ﻿

(2016-01-29)
A minimally-invasive, optical strategy to detect and discriminate between inflammation and neoplasia could improve early cancer detection by reducing the number of false positive exams due to benign inflammation. This ...
• #### Optical Contrast Agents to Visualize Molecular Expression in Breast Cancer ﻿

(2013-09-16)
Breast cancer is the second leading cause of death of women in the United States. Improvements in screening technology have increased the breast cancer incidence rate, as smaller lesions are being detected. Due to the ...

(1970)
• #### Optical detection of a Bardeen-Cooper-Schrieffer phase transition in a trapped gas of fermionic atoms ﻿

(1999)
A theoretical treatment of light scattering from a degenerate Fermi gas of trapped ultracold 6Li atoms is presented. We find that the scattered light contains information that directly reflects the quantum pair correlation ...
• #### Optical development of an ion/electron acceleration facility ﻿

(1998)
This thesis details the optical development of an ion/electron accelerating facility at Southwest Research Institute which is currently being used to calibrate the Plasma Spectrometer for the Cassini Mission to Saturn. The ...
• #### Optical Feshbach Resonances and Coherent Photoassociation in a Strontium BEC ﻿

(2013-12-03)
The divalent electronic structure of alkaline-earth metal atoms such as strontium gives rise to metastable, excited triplet levels and narrow intercombination transitions. These have been exploited for optical clocks, ...
• #### Optical forces and optical torques on various materials arising from optical lattices in the Lorentz-Mie regime ﻿

(2011)
By combining the Maxwell stress tensor with the finite-difference time-domain (FDTD) method, we calculate the optical force and optical torque on particles from optical lattices. We compare our method to the two-component ...
• #### Optical illusions and augmented graphics for manned and robotic guidance and control ﻿

(1992)
Piloting and many related control activities, especially remote manipulation via teleoperations and robotics, stand to benefit substantially from better means of communication between controller and controlled. We have ...
• #### Optical Imaging Techniques for the Detection of Esophageal Neoplasia in Barrett’s Esophagus ﻿

(2013-09-16)
The main objective of this research was to develop a two-stage optical imaging platform to improve detection of cancer in Barrett’s esophagus (BE). BE caused by chronic reflux and patients with BE are at a higher risk for ...
• #### Optical Imaging With a High-Resolution Microendoscope to Identify Cholesteatoma of the Middle Ear ﻿

(2013)
Objectives/Hypothesis: High-resolution optical imaging is an imaging modality that allows visualization of structural changes in epithelial tissue in real time. Our prior studies using contrast-enhanced microendoscopy to ...
• #### Optical Lever Measurement Accuracy for Off-Resonance Atomic Force Microscopy ﻿

(2011)
This research evaluates measurement accuracy in optical lever-based atomic force microscopy (AFM) for off-resonance conditions and parameter variations. Under controlled conditions and correct calibration, AFM provides ...
• #### Optical manipulation of helium(2(3)S) atoms with a diode laser ﻿

(1995)
A commercial Spectra Diode Laboratories, 1.083 $\mu$m diode laser has been used to efficiently spin polarize an atomic beam of He(2$\sp3$S) metastable atoms by optical pumping on the $\rm 2\sp3S\sb1\rightarrow2\sp3P\sb1$ ...
• #### Optical Molecular Imaging in the Gastrointestinal Tract ﻿

(2013-05)
Recent developments in optical molecular imaging allow for real-time identification of morphological and biochemical changes in tissue associated with gastrointestinal neoplasia. This review summarizes widefield and high ...
• #### Optical Molecular Imaging of Multiple Biomarkers of Epithelial Neoplasia: Epidermal Growth Factor Receptor Expression and Metabolic Activity in Oral Mucosa ﻿

(2012-06)
Biomarkers of cancer can indicate the presence of disease and serve as therapeutic targets. Our goal is to develop an optical imaging approach using molecularly targeted contrast agents to assess several centimeters of ...

(2007)
• #### Optical properties of a spherical 2D electron gas in the presence of a uniform magnetic field ﻿

(2005)
Using the RPA, we calculate the plasmon frequencies of an electron gas on a two-dimensional spherical surface in the presence of a weak magnetic field. We show that the magnetic field results in a coupling between electronic ...
• #### Optical properties of novel structures of colloidal crystals ﻿

(2004)
Photonic crystals are materials having a periodicity in their refractive index. This results in the inhibition of select frequencies of light from propagating within the crystal causing the formation of a gap in the photonic ...
• #### Optical Properties of Plasmonic Heterodimers and Nanoantennas for Surface-Enhanced Infrared Absorption ﻿

(2014-11-24)
Electromagnetic interactions in nanoscale systems are a driving force of research in the field of nanophotonics. The basic properties of these systems set the groundwork for understanding complex optical phenomena useful ...
• #### Optical Properties of Star-Shaped Gold Nanoparticles ﻿

(2006-03-28)
• #### Optical Properties of Strongly Coupled Plasmon-Exciton Hybrid Nanostructures ﻿

(2012)
Strongly coupled plasmon-exciton hybrid nanostructures are fabricated and their optical properties are studied. The plasmonic and excitonic systems are gold nanoshells and J-aggregates, respectively. Gold nanoshells are ...
• #### Optical pumping dynamics and spin relaxation in gaseous He_ ﻿

(1966)
The first part of this investigation is concerned with the dynamics of the optical polarization process in He3 gas subjected to an electrical discharge. The characteristic time for the build-up of polarization under the ...

(1986)
• #### Optical spectroscopy and imaging systems for gynecological cancers: from Ultraviolet-C (UVC) to the Mid-infrared ﻿

(2011)
Optical spectroscopy and imaging has proving to be of diagnostic relevance in many organ sites. We use fluorescence and FTIR spectroscopy to study gynecological organ sites and develop classification algorithms for cancer ...
• #### Optical spectroscopy and numerical modeling of nonradiative shocks in supernova remnants ﻿

(2000)
This thesis is an observational and theoretical study of the optical emission from nonradiative shocks in three supernova remnants: the Cygnus Loop, RCW 86 and Tycho, which together span a wide range of shock velocities ...
• #### Optical spectroscopy of single-walled carbon nanotubes in high magnetic fields ﻿

(2007)
Magnetic flux threading a single-walled carbon nanotube (SWNT) is predicted to influence its electronic structure through the Aharonov-Bohm (AB) effect, causing bandgap oscillations and absorption peaks splitting. In order ...
• #### Optical Spectroscopy of Single-Walled Carbon Nanotubes Under Extreme Conditions ﻿

(2012)
Single-walled carbon nanotubes (SWNTs) are one of the leading candidate materials to realize novel nanoscale photonic devices. In order to assess their performance characteristics as optoelectronic materials, it is crucial ...
• #### Optical Studies on Functionalized Graphene Systems ﻿

(2014-05-05)
Graphene, the ‘wonder material’, has received a lot of attention for its excellent electronic properties. However, the lack of a band gap severely limits its use, especially in optoelectronic applications. Therefore, opening ...
• #### Optical systems for point-of-care diagnostic instrumentation: analysis of imaging performance and cost ﻿

(2014)
One of the key elements in point-of-care (POC) diagnostic test instrumentation is the optical system required for signal detection and / or imaging. Many tests which use fluorescence, absorbance, or colorimetric optical ...
• #### Optically detected terahertz resonance spectroscopy of semiconductor nanostructures ﻿

(2005)
In this dissertation work we have developed an ultracompact optically-detected terahertz resonance (ODTR) spectroscopy system, using quantum cascade lasers (QCLs). This system can be used for investigating various terahertz ...
• #### Optically-absorbing nanoparticles for enhanced tissue repair ﻿

(2004-02-03)
This invention is generally in the field of improved methods for the localized delivery of heat and the use thereof for the repair of tissue. The method involves localized induction of hyperthermia in tissue or materials ...
• #### Optically-active nanoparticles for use in therapeutic and diagnostic methods ﻿

(2003-03-11)
This invention is generally in the field of improved methods for the localized delivery of heat and the localized imaging of biological materials. The delivery may be in vitro or in vivo and is useful for the localized ...
• #### Optics and virtualization as data center network infrastructure ﻿

(2012)
The emerging cloud services have motivated a fresh look at the design of data center network infrastructure in multiple layers. To transfer the huge amount of data generated by many data intensive applications, data center ...
• #### OPTIMAL APPROXIMATION ALGORITHMS FOR DIGITAL FILTER DESIGN ﻿

(1983)
Several new algorithms are presented for the optimal approximation and design of various classes of digital filters. An iterative algorithm is developed for the efficient design of unconstrained and constrained infinite ...
• #### OPTIMAL ARRAYS FOR NARROWBAND BEAMFORMING ﻿

(1984)
We develop equations describing the capability of arbitrary three-dimensional arrays to resolve and detect two narrowband sources using conventional (CONV) beamforming, minimum energy (ME) adaptive beamforming, and linear ...
• #### Optimal binaural processing based on point process models of preprocessed cues ﻿

(1995)
In localizing high-frequency tonal signals in the horizontal plane, the lateral superior olive (LSO) encodes the interaural level differences (ILD), the crucial cue for azimuthal angle extraction at some nuclei more central ...