Truck tire cornering and braking traction study. Final report.

Mode of access: Internet.

New techniques and equipment for correlation and computation

"Technical memorandum 7668-TM-2"

In the arbitration proceedings between the employes of Indianapolis traction and terminal company by and through their committee and Indianapolis traction and terminal company before the Public service commission of Indiana, acting as a voluntary board of arbitration ...

Argument of W.H. Latta, counsel for the respondent, testimony, etc.

The Electrical world.

Description based on: Vol. 2, no. 2 (Sept. 8, 1883); title from caption.

National electrical safety code /

"Supersedes NBS handbook H31 and pp. 31 through 75 of NBS handbook H30."

Cyclopedia of applied electricity; a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric light transmission, alternating-current machinery, telegraphy, etc.,

"A compilation of many of the most valuable instruction books of the American school of correspondence."--Forword.

Proceedings of the American Street and Interurban Railway Engineering Association.

Mode of access: Internet.

Manual of standard and recommended practices.

Section 16 not yet published.

On the resistance to traction on railways by friction and gravitation.

Mode of access: Internet.

Electrical world

Mode of access: Internet.

The Electrical world.

Mode of access: Internet.

New York Electrical Contractors Association, 1892-1955.

Mode of access: Internet.

Railway transport.

Mode of access: Internet.

Thermal injuries in three children caused by an electrical warming mattress

Peroperative hypothermia is recognized to increase mortality and morbidity, and the paediatric anaesthetist faces specific challenges resulting from the increased body surface to volume ratio, particularly in smaller children. We describe three children who were consecutive patients on one operating list and sustained severe thermal injuries. These were due to a malfunctioning electrical heating mat, despite appropriate use and monitoring by the attending anaesthetist. It is rare for thermal warming devices to cause injury. We review the use of heating mats, and suggest modifications in their manufacture which may minimize the risks associated with heating devices.

Learnability and discriminability of melodic medical equipment alarms

Melodic alarms proposed in the IEC 60601-1-8 standard for medical electrical equipment were tested for learnability and discriminability. Thirty-three non-anaesthetist participants learned the alarms over two sessions of practice, with or without mnemonics suggested in the standard. Fewer than 30% of participants could identify the alarms with 100% accuracy at the end of practice. Confusions persisted between pairs of alarms, especially if mnemonics were used during learning (p = 0.011). Participants responded faster (p < 0.00001) and more accurately (p = 0.002) to medium priority alarms than to high priority alarms, even though they rated the high priority alarms as sounding more urgent (p < 0.00001). Participants with at least 1 year of formal musical training identified the alarms more accurately (p = 0.0002) than musically untrained participants, and found the task easier overall (p < 0.00001). More intensive studies of the IEC 60601-1-8 alarms are needed for their effectiveness to be determined.