User profiles for Nathan Greiner

Nathan J. Greiner

Air Force Institute of Technology
Verified email at us.af.mil
Cited by 111

[HTML][HTML] Recruitment of upper-limb motoneurons with epidural electrical stimulation of the cervical spinal cord

N Greiner, B Barra, G Schiavone, H Lorach… - Nature …, 2021 - nature.com
Epidural electrical stimulation (EES) of lumbosacral sensorimotor circuits improves leg
motor control in animals and humans with spinal cord injury (SCI). Upper-limb motor control …

Activity-dependent spinal cord neuromodulation rapidly restores trunk and leg motor functions after complete paralysis

…, B Nazarian, S Benkler, S Callegari, N Greiner… - Nature medicine, 2022 - nature.com
Epidural electrical stimulation (EES) targeting the dorsal roots of lumbosacral segments
restores walking in people with spinal cord injury (SCI). However, EES is delivered with …

Advantages of soft subdural implants for the delivery of electrochemical neuromodulation therapies to the spinal cord

M Capogrosso, J Gandar, N Greiner… - Journal of neural …, 2018 - iopscience.iop.org
Objective. We recently developed soft neural interfaces enabling the delivery of electrical
and chemical stimulation to the spinal cord. These stimulations restored locomotion in animal …

Scaling of film cooling performance from ambient to engine temperatures

NJ Greiner, MD Polanka… - Journal of …, 2015 - asmedigitalcollection.asme.org
The present study employs computational fluid dynamics (CFD) to explore the complexities
of scaling film cooling performance measurements from ambient laboratory conditions to …

Effect of variable properties within a boundary layer with large freestream-to-wall temperature differences

NJ Greiner, MD Polanka… - … for gas turbines …, 2014 - asmedigitalcollection.asme.org
Modern gas-turbine engines are characterized by high core-flow temperatures and significantly
lower turbine-surface temperatures. This can lead to large property variations within the …

Computational Fluid Dynamics Evaluations of Film Cooling Flow Scaling Between Engine and Experimental Conditions

…, MD Polanka, NJ Greiner - Journal of …, 2017 - asmedigitalcollection.asme.org
The hostile turbine environment requires testing film cooling designs in wind tunnels that
allow for appropriate instrumentation and optical access, but at temperatures much lower than …

Spatiotemporal maps of proprioceptive inputs to the cervical spinal cord during three-dimensional reaching and grasping

P Kibleur, SR Tata, N Greiner, S Conti… - … on Neural Systems …, 2020 - ieeexplore.ieee.org
… Tata and Nathan Greiner contributed equally to this work.) (Corresponding author: Marco
Capogrosso.) Pierre Kibleur was with the Department of Neuroscience and Movement Science…

A New Calculation Strategy for Molten Salt Reactor Neutronic–Thermal-Hydraulic Analysis Implemented with APOLLO3® and TRUST/TrioCFD

N Greiner, F Madiot, Y Gorsse, C Patricot… - Nuclear Science and …, 2023 - Taylor & Francis
Molten salt nuclear reactors (MSRs) constitute a promising technology to produce safe,
reliable, abundant low-carbon energy. To design MSR systems and perform safety analyses on …

Effect of variable properties and radiation on convective heat transfer measurements at engine conditions

NJ Greiner, MD Polanka… - Journal of Heat …, 2016 - asmedigitalcollection.asme.org
Convective heat transfer from a fluid to a surface is an approximately linear function of
driving temperature if the properties within the boundary layer are approximately constant. …

Representing Data Collections in an SSA Form

T McMichen, N Greiner, P Zhong… - 2024 IEEE/ACM …, 2024 - ieeexplore.ieee.org
Compiler research and development has treated computation as the primary driver of
performance improvements in C/C++ programs, leaving memory optimizations as a secondary …