Zobrazeno 1 - 10
of 67
pro vyhledávání: '"J. R. H. Smith"'
Autor:
C. D. Porter, J. R. H. Smith, E. M. Stagar, A. Simmons, M. Nieberding, C. M. Orban, J. Brown, A. Ayers
Publikováno v:
Physical Review Physics Education Research, Vol 16, Iss 2, p 020119 (2020)
Recent years have seen a resurgence of interest in using virtual reality (VR) technology to benefit instruction, especially in physics and related subjects. As VR devices improve and become more widely available, there remains a number of unanswered
Externí odkaz:
https://doaj.org/article/d7b9eb8687bc4c7a9feae66e026572a6
Publikováno v:
Experimental Lung Research. 37:109-129
Retention in the extrathoracic airways, and clearance by nose blowing, of monodisperse indium-111-labeled polystyrene particles were followed for at least 2 days after inhalation by healthy volunteers. Nine volunteers inhaled 3-μm aerodynamic diamet
Publikováno v:
Experimental Lung Research. 34:287-312
The Human Respiratory Tract Model of the International Commission on Radiological Protection assumes that a fraction of particles deposited in the bronchial tree clears slowly, this fraction decreasing with increasing particle geometric diameter. To
Publikováno v:
Radiation Protection Dosimetry. 105:473-476
In a nuclear weapon accident involving fire or conventional explosion, most of the radiation dose received by people in the immediate vicinity would result from inhalation of 239 Pu. This is accompanied by the nuclide 241 Am, which is much easier to
Autor:
M. J. Youngman, M. D. Dorrian, George Etherington, J. R. H. Smith, Michael Bailey, A. L. Shutt
Publikováno v:
Radiation Protection Dosimetry. 79:249-252
Clearance from the extrathoracic (ET) airways was measured in nine volunteers for up to five days following inhalation of 3 μm aerodynamic diameter particles. An initial assessment of the implications of the results for dose assessment, and a discus
Publikováno v:
Radiation Protection Dosimetry. 73:75-79
Predictions of the effects of decontamination, relocation and agricultural countermeasures are an important part of the decision-making process following an accidental release of radioactive material into the environment. Models and supporting databa
Autor:
M. P. Dancy, J. Billowes, J. R. H. Smith, S. A. Wells, D. W. L. Tolfree, D.A. Eastham, J. A. R. Griffith, P. M. Walker, J. Groves, I. S. Grant, D. E. Evans
Publikováno v:
Hyperfine Interactions. 59:193-196
East particle-photon coincidence techniques, developed at Daresbury with strontium isotopes, allow ultrasensitive laser fluorescence spectroscopy of beams of radio-active isotopes which can only be produced in very low yields. The technique has now b
Publikováno v:
Radiation protection dosimetry. 127(1-4)
The ICRP human respiratory tract model (HRTM) assumes that the 'slow-cleared fraction' fs in the bronchial (BB) and bronchiolar (bb) regions decreases with increasing particle geometric diameter dp. To test this assumption, five volunteers inhaled 8-
Autor:
J. R. H. Smith
Publikováno v:
Radiation protection dosimetry. 105(1-4)
The Smith-Etherington extrathoracic (ET) clearance model has been developed to describe clearance from the human nasal passage as observed for 1.5, 3 and 6 microm monodisperse particles inhaled by participants while sitting or at light exercise. Mode
Publikováno v:
Radiation Protection Dosimetry. 53:73-75
The performance of the germanium (Ge) detector body monitor that has been recently installed at NRPB Chilton is evaluated and compared with the performance of the existing NRPB scintillation detector body monitor. Calibration of a p-type Ge detector