A5102815556- Semiconductor Quantum Structures and Devices
- Physics of Superconductivity and Magnetism
- Quantum and electron transport phenomena
- Ion channel regulation and function
- Lipid Membrane Structure and Behavior
- Spectroscopy and Quantum Chemical Studies
- Advanced Condensed Matter Physics
- Anesthesia and Neurotoxicity Research
- Semiconductor materials and devices
- GaN-based semiconductor devices and materials
- Force Microscopy Techniques and Applications
- Magnetic properties of thin films
- Solid-state spectroscopy and crystallography
- Carbon Nanotubes in Composites
- Advanced Chemical Physics Studies
- Spectroscopy and Laser Applications
- Anesthesia and Sedative Agents
- Irish and British Studies
- Photoreceptor and optogenetics research
- Airway Management and Intubation Techniques
- Cardiac electrophysiology and arrhythmias
- Anesthesia and Pain Management
- Higher Education Research Studies
- Quantum Dots Synthesis And Properties
- Advanced Semiconductor Detectors and Materials
UPMC Presbyterian
2025
Synod Hospital
2025
Presbyterian Hospital
1970-2025
University of California, San Diego
2021-2024
Tallaght University Hospital
2021
University of California, Davis
2019
University of Florida
2015-2017
Tufts University
1966-2017
The University of Western Australia
2015-2017
Yale University
2012-2017
We have measured the electron intersubband relaxation time due to emission of longitudinal-optical (LO) phonons in GaAs-AlGaAs quantum wells using time-resolved anti-Stokes Raman scattering. When energy separation subbands is greater than LO phonon we find lifetime electrons n=2 level be \ensuremath{\le}1 ps which excellent agreement with theoretical calculations two-dimensional electron-phonon interactions.
Oxygen saturation determined by pulse oximetry was monitored in 152 pediatric surgical patients divided into two groups. In one group, the oximeter data and alarms were available (N = 76) to anesthesia team, and, other these unavailable 76). A trained observer recorded all intraoperative hypoxic episodes informed team of major events (i.e., oxygen less than or equal 85% for greater 30 s) (PaO2 approximately 52 mmHg). Thirty-five occurred: 24 11 group (P 0.021). number occurred children 2 yr...
This single-blind study examined four levels of monitoring in 402 pediatric cases. Patients were randomly assigned to one groups: 1) oximeter and capnograph; 2) only oximeter; 3) or 4) neither nor capnograph data available the anesthesia team. An anesthesiologist, not involved patient care, observed all cases continuously recorded hemoglobin oxygen saturation (Spo2), ECG, expired CO2, plethysmographic output. Mean age, weight, ASA physical status, airway management (mask endotracheal tube),...
Allergen immunotherapy can desensitize even subjects with potentially lethal allergies, but the changes induced in T cells that underpin successful remain poorly understood. In a cohort of peanut-allergic participants, we used allergen-specific T-cell sorting and single-cell gene expression to trace transcriptional "roadmap" individual CD4+ throughout immunotherapy. We found induces expand shift toward an "anergic" Th2 phenotype largely absent both pretreatment participants healthy controls....
Optical spectra of high-transition-temperature superconductors in the mid-infrared display a gap in-plane conductivity whose role for superconductivity remains unresolved. Femtosecond measurements reflectivity YBa(2)Cu(3)O(7-delta) after nonequilibrium optical excitation are used to demonstrate ultrafast fill-in this and reveal two constituents: picosecond recovery superconducting condensate underdoped optimally doped material and, YBa(2)Cu(3)O(7-delta), an additional subpicosecond component...
Femtosecond time-resolved spectrocopy has been used to investigate electronic excitations contributing the superconducting gap function $\ensuremath{\Delta}(\ensuremath{\omega},T)$ in ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7\ensuremath{-}\ensuremath{\delta}}$. The optical response is strongly peaked at 1.5 eV, and contains two distinct components: one with a characteristic relaxation time of $\ensuremath{\sim}5\mathrm{ps}$, whose amplitude displays two-fluid-like temperature...
Summary.— Data concerning 155 patients with all types of generalized pustular psoriasis have been reviewed. Generalized Yon Zumbusch type is a severe disease. Thirty‐four 106 followed up died. In 26 these, death was attributable to the disease or its treatment. G.P.P. developing from acral pustulosis (acrodermatitis continua) has worst prognosis and likely prove fatal. evolving ordinary, palmo‐plantar atypical fiexural forms better may remit spontaneously. The use steroids systemically for...
Some crystals with the fluorite structure, e.g. CaF 2 , SrF BaF SrCl and PbF are known to exhibit a specific heat anomaly at temperatures T c well below melting point. It is generally assumed that this associated development of extensive disorder in anion sublattice. To study we have carried out polarized Raman scattering investigations these temperature range 4-1420 K. Fluorite one Raman-active phonon 2g symmetry. We find th position shape line can be explained detail by using third-...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Reduction of Phenylated Olefins with Alkali Metals in Liquid Ammonia SolutionCharles Bushnell Wooster and John F. RyanCite this: J. Am. Chem. Soc. 1934, 56, 5, 1133–1136Publication Date (Print):May 1, 1934Publication History Published online1 May 2002Published inissue 1 1934https://pubs.acs.org/doi/10.1021/ja01320a041https://doi.org/10.1021/ja01320a041research-articleACS PublicationsRequest reuse permissionsArticle...
Malignant fever is a recently-noted, usually fatal complication of anesthesia and surgery. Five cases representing the author' erperience since August, 1966 are described. Serial physiologic changes ocurring during early phases sudden reported for last two patients. Both patients had received succinylcholine developed muscular rigidity. Salient findings include metabolic acidosis, hyperkalemia myoglobinemia. Successful intragasric cooling with Wangensteen Hypothermia Unit Possible etiologic...
Hydrophobic self-assembly has been used to direct the synthesis of conjugated [2] and [3]rotaxanes (20 21) in aqueous solution, by Glaser coupling a water-soluble alkyne 3 presence cyclophane 6. No rotaxanes were formed when cyclodextrins instead cyclophane. NMR electrospray mass spectrometry probe binding properties stopper unit 3. ring current shifts NOEs show that 6 binds mainly terminal phenylene In solution bind less strongly than cyclophane, whereas gas-phase more strongly. The are...