A5012231325- Nuclear physics research studies
- Nuclear Physics and Applications
- Quantum Chromodynamics and Particle Interactions
- Muscle activation and electromyography studies
- Astronomical and nuclear sciences
- Atomic and Molecular Physics
- High-Energy Particle Collisions Research
- Prosthetics and Rehabilitation Robotics
- Sports Performance and Training
- Musculoskeletal pain and rehabilitation
- Advanced Chemical Physics Studies
- Ergonomics and Musculoskeletal Disorders
- Advanced NMR Techniques and Applications
- Nuclear reactor physics and engineering
- Rare-earth and actinide compounds
- Shoulder Injury and Treatment
- Topology Optimization in Engineering
- Particle physics theoretical and experimental studies
- Total Knee Arthroplasty Outcomes
- Lower Extremity Biomechanics and Pathologies
- X-ray Spectroscopy and Fluorescence Analysis
- Balance, Gait, and Falls Prevention
- Spine and Intervertebral Disc Pathology
- Quantum, superfluid, helium dynamics
- Mechanics and Biomechanics Studies
Aalborg University
2016-2025
University of Mississippi Medical Center
2023
Jackson Memorial Hospital
2023
Biomechanics Institute of Valencia
2011-2022
University of California, Berkeley
1990-2021
Lawrence Berkeley National Laboratory
2011-2021
Vanderbilt University
1995-2020
Institute for Computer Aided Design
2011-2016
University of California System
1976-2012
Berkeley College
2012
Central collisions of heavy nuclei at c.m. kinetic energies a few hundred MeV per nucleon produce fireballs hot, dense nuclear matter. Each fireball explodes, producing blast wave nucleons and pions. Several features the observed cross sections for pions protons from Ne on Na F 0.8 GeV/nucleon (lab) are explained by wave, but contradict earlier, purely thermal models. The available energy is equally divided between translational blast, motion particles in exploding
The real potential derived by optical-model analysis of data on elastic scattering alpha particles is used for calculation barrier penetrabilities all known decay groups even-even nuclei. penetration factors were calculated numerical integration in the WKB approximation taking into account centrifugal effects, but ignoring noncentral interactions. Using these and experimental half-lives, reduced level widths ${\ensuremath{\delta}}^{2}$ are calculated. Ratios values ground excited-state...
Musculoskeletal (MS) models should be able to integrate patient-specific MS architecture and undergo thorough validation prior their introduction into clinical practice. We present a methodology develop subject-specific simultaneously predict muscle, ligament, knee joint contact forces along with secondary kinematics. The of generic cadaver-based model was scaled using an advanced morphing technique the morphology patient implanted instrumented total arthroplasty (TKA) available in fifth...
The measured intensities of intraband cascading transitions in the ground-state bands 21 high-yield even-even fission products have been analyzed by two methods to determine magnitude intrinsic angular momentum primary formed spontaneous $^{252}\mathrm{Cf}$. first method was quantitatively compare observed with those reported literature for in-beam (particle, $\mathrm{xn}$) reactions which angular-momentum distribution determined optical-model calculations. second based on a simple...
This paper introduces a general optimisation-based method for identification of biomechanically relevant parameters in kinematically determinate and over-determinate systems from given motion. The is designed to find set that constant over the time frame interest as well time-varying system coordinates, it particularly biomechanical motion analysis where can be difficult accurately determine by direct measurements. Although parameter problem results large-scale optimisation problem, we show...
In this paper, we introduce a new general method for kinematic analysis of rigid multi body systems subject to holonomic constraints. The extends the standard kinematically determinate over-determinate case. This is accomplished by introducing constrained optimisation problem with objective function given as set system equations that are allowed be violated while remaining define feasible set. We show exact velocity and acceleration can also performed solving linear sets equations,...
An application of intensity interferometry to relativistic heavy ion collisions is reported. The correlation between two like-charged pions used study the reactions $\mathrm{A}\mathrm{r}+\mathrm{K}\mathrm{C}\mathrm{l}\ensuremath{\rightarrow}{2\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}+X$ and $\mathrm{N}\mathrm{e}+\mathrm{N}\mathrm{a}\mathrm{F}\ensuremath{\rightarrow}{2\ensuremath{\pi}}^{\ensuremath{-}}+X$, both at an incident beam energy $1.8A$ GeV. Source sizes lifetimes are measured...
Subject-specific scaling of cadaver-based musculoskeletal models is important for accurate analysis within multiple areas such as ergonomics, orthopaedics and occupational health. We present two procedures to scale 'generic' match segment lengths joint parameters a specific subject compare the results simpler approach based on linear, segment-wise scaling. By incorporating data from functional standing reference trials, new approaches reduce model sensitivity assumed marker positions. For...
Bubble Chambers provided the dominant particle detection technology in accelerator experiments for several decades, eventually falling into disuse with advent of other techniques. We report here on first period operation an ultra-clean, room-temperature bubble chamber containing 1.5 kg superheated CF$_{3}$I, a target maximally sensitive to spin-dependent and -independent Weakly Interacting Massive Particle (WIMP) couplings. An exposure excess 250 kg-days is obtained, live-time fraction...
The results of a systematic study 0\ifmmode^\circ\else\textdegree\fi{} pion production by heavy ions from 125 to 400 MeV/nucleon are presented. dependence the cross section on mass number target, energy beam, and charge discussed. A striking feature data is an unexpectedly large $\frac{{\ensuremath{\pi}}^{\ensuremath{-}}}{{\ensuremath{\pi}}^{+}}$ ratio for pions valocity close projectile velocity.
In a survey for alpha-activity among cyclotron produced neutron deficient nuclides of the elements below lead, was detected in number rare earth with atomic greater than 62, that samarium, and gold mercury nuclide. A detailed study alpha-active europium, gadolinium, terbium, dysprosium made.The relationship between alpha-decay rates energies region is examined. Calculations "effective nuclear radius alpha-particles" were made using five different rate formulas.The trends are discussed,...
Using reverse kinematics, we have studied the breakup of $1.0A$ GeV gold nuclei incident on a carbon target. The detector system permitted exclusive event reconstruction nearly all charged reaction products. moments resulting fragment distribution provide strong evidence that nuclear matter possesses critical point observable in finite nuclei. We determined values for exponents $\ensuremath{\gamma}$, $\ensuremath{\beta}$, and $\ensuremath{\tau}$. These are close to those liquid-gas systems...