Dr. John R. Barker

Expert Publications

• Master equation analysis of pressure-dependent atmospheric reactions.
• Quasiclassical trajectory simulations of OH(v) + NO2 --> HONO2* --> OH(v') + NO2: capture and vibrational deactivation rate constants.
• CF3CH3 --> HF + CF2CH2: a non-RRKM reaction?
• Intramolecular vibrational energy redistribution involving the torsion in CF3CH3: a molecular dynamics study.
• On modeling the pressure-dependent photoisomerization of trans-stilbene by including slow intramolecular vibrational energy redistribution.
• Quasi-classical trajectory simulations of intramolecular vibrational energy redistribution in HONO2 and DONO2.
• Master equation simulations of competing unimolecular and bimolecular reactions: application to OH production in the reaction of acetyl radical with O2.
• On the chaperon mechanism: application to ClO + ClO (+N2) --> ClOOCl (+N2).
• Non-RRKM dynamics in the CH3O2 + NO reaction system.
• Tropospheric oxidation of ethyne and But-2-yne. 1. Theoretical mechanistic study.
• Oxidation of ethyne and But-2-yne. 2. Master equation simulations.
• Sums and densities of fully coupled anharmonic vibrational states: a comparison of three practical methods.
• Collisional energy transfer probability densities P(E, J; E', J') for monatomics colliding with large molecules.
• Mechanism and kinetics of the reaction NO3 + C2H4.
• Ab initio reaction rate constants computed using semiclassical transition-state theory: HO + H2 → H2O + H and isotopologues.

Media Releases

Get to know Orthopedic Surgeon Dr. John R. Barker, who serves patients in Lone Tree, Colorado.

Dr. Barker is a board-certified orthopedic surgeon who lends his skills and expertise to serve patients at Rocky Mountain Spine Clinic in Lone Tree, Colorado. He and his colleagues at Rocky Mountain Spine Clinic provide treatment of all spine conditions, including congenital deformities, degenerative diseases, as well as spinal tumors and spine trauma (both adult and pediatric). They are well-respected physicians, not only in the medical community in the region, but across the country and internationally as well. They are highly trained, having come from some of the best medical schools in the United States.

In addition to treating patients at Rocky Mountain Spine Clinic, Dr. Barker can be found on staff at Sky Ridge Medical Center and Medical Center of Aurora. 

Remaining at the forefront of his challenging field, he is a member of the National Academy of Sciences, the American Medical Association, the American Academy of Orthopaedic Surgeons, the North American Spine Society, the Aurora-Adams County Medical Society, the Denver Medical Society, and the Cervical Spine Research Society. Additionally, he is board-certified in orthopedic surgery by the American Board of Orthopaedic Surgery. 

After earning his medical degree from the University of Oklahoma College of Medicine in Oklahoma City, Dr. Barker went on to complete his internship and residency at Southern Illinois University College of Medicine in Springfield, Illinois. Thereafter, he completed his fellowship at Rocky Mountain Spine Clinic in Aurora, Colorado, under the direction of Drs. John A. Odom and Eric R. Jamrich.

Orthopedic surgery or orthopedics, also spelled orthopaedics, is the branch of surgery concerned with conditions involving the musculoskeletal system. Orthopedic surgeons use both surgical and nonsurgical means to treat musculoskeletal trauma, spine diseases, sports injuries, degenerative diseases, infections, tumors, and congenital disorders. Dr. Barker’s special interests include scoliosis, spine trauma, spinal tumors, total disc arthroplasty, minimally invasive procedures, as well as degenerative conditions of the cervical, thoracic, and lumbar spine.

Attributing his success to his excellent training and interactions with his patients, he enjoys playing tennis, skiing, and fishing in his spare time. 

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