Zobrazeno 1 - 10
of 112
pro vyhledávání: '"R.J. Holdsworth"'
Publikováno v:
Applied Physics B. 92:271-279
We describe the performance of two mid-infrared laser spectrometers for carbon monoxide, nitrous oxide and nitric oxide detection. The first spectrometer for CO and N2O detection around 2203 cm-1 is based upon all-diode laser difference frequency gen
Publikováno v:
Surface and Coatings Technology. 201:9030-9034
This paper reports the in situ application, for the first time, of simultaneous multispecies, multipoint near-infrared diode laser absorption spectroscopy (NIRDLAS) to the deposition of thin films by atmospheric pressure chemical vapour deposition (A
Publikováno v:
Applied Physics B. 85:413-420
A distributed feedback diode laser sensor based upon off-axis cavity-enhanced absorption spectroscopy at 1605.5 nm has been developed for 13C16O2/12C16O2 isotope ratio measurements in synthetic air and human breath. A noise-equivalent absorption sens
Publikováno v:
Measurement Science and Technology. 17:923-931
Phase-sensitive, off-axis cavity-enhanced absorption spectroscopy techniques with a rectangular pulse current modulated violet diode laser (~404 nm) were applied to measurement of nitrogen dioxide (NO2) in diluted standard mixture and laboratory air.
Publikováno v:
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 60:3353-3360
A near-infrared diode laser-based spectrometer has been designed and built for the remote sensing of vehicle emissions. It detects carbon monoxide and carbon dioxide absorptions around 1580 nm and can provide the ratio CO/CO2 for vehicle exhaust stud
Publikováno v:
European Journal of Vascular and Endovascular Surgery. 9(1):80-85
Objectives:To study the relationship between carotid plaque morphology and the degree of stenosis on Duplex ultrasonography and symptoms.Design:Prospective open clinical study.Methods:2590 patients with 5180 carotid arteries were scanned, 4560 were i
Publikováno v:
Laser Applilcations to Chemical, Security and Environmental Analysis.
A multispecies near-infrared diode laser spectrometer has been constructed for measurements of carbon monoxide, carbon dioxide and methane directly in the exhaust of a static internal combustion engine under different operating conditions.
Publikováno v:
Clinical Radiology. 51:801-803
Carotid duplex scanning offers a quick and non-invasive method for detecting extracranial carotid arterial disease. However, the increasing awareness of the association of carotid disease and cerebrovascular symptoms, together with the recognition th
Autor:
R.J. Holdsworth, Hugh Paterson
Publikováno v:
European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery. 21(2)
Objectives : to establish if access to distal arterial reconstructive surgery is equally distributed within the health boards of Scotland and to establish if any variations in practice are reflected in lower limb amputation. Methods : a retrospective
Publikováno v:
Scottish medical journal. 44(2)
Guidelines for referral of patients for carotid duplex scanning were introduced stating that scans were only indicated for patients with hemispheric localising symptoms or asymptomatic bruits. A 19% reduction in referral rate was seen for new scans i