Survey of impaired drivers, fatally injured or surviving, who caused fatal highway accidents in Alberta in 1970-72

In 1970-72, 456 (53.4%) of 854 drivers responsible for a motor vehicle accident in which either they or other persons were killed had been drinking beforehand. Of surviving culpable drivers tested for blood alcohol concentration 81.7% were found to be legally impaired; however, only 24.8% of these drivers were tested. Because surviving culpable drivers pose a possible future hazard to highway safety it is important that data on this group be collected and analysed.     

Very low birth weight children at school age: comparison of neonatal management methods

The outcome of 293 infants born to a geographically defined community and weighing 501-1500 g was investigated. Medical intervention in the newborn period had been avoided. Morbidity was assessed at school age. Of the infants, 236 had been live born in the labour ward of this hospital; of these, 117 (49.6%) died in the neonatal period, one (0.4%) died in the first year, four (1.7%) were untraced, 13 (5.5%) had major handicap, 29 (12.3%) had minor handicap, and 72 (30.5%) were considered to be normal. In terms of survival, handicap, and intellectual with that of infants born over the same period (1963-71) in areas where intensive methods of perinatal care were used. These results imply that postnatal survival and potential of infants of very low birth weight are by no means prejudiced when only experienced nursing care is available.     

Absence of tonic electromyographic activity during sleep in normal and spastic nonmimetic skeletal muscles in man

An electromyographic study of nonmimetic skeletal muscles was carried out in 8 normal adults and 4 patients with spastic hemiparesis during all stages of sleep for a total of 21 nights. All normal subjects showed absence of tonic electromyographic activity in all nonmimetic skeletal muscles in all stages of sleep. Also, during quiet, relaxed wakefulness, tonic muscle discharges disappeared in the normal subjects. Three patients with upper motor neuron spasticity demonstrated results during sleep similar to those obtained in the normal subjects. In the fourth patient, tonic muscle discharges persisted into stage 2 non-REM sleep, disappeared within 30 to 240 seconds following the onset of stage 2 sleep, and were absent during stages 3 and 4 sleep and REM sleep.     

High-deformability wire rod made of steel Sv-08G2S

Welding wire is made with the use of wire rod composed of steels Sv-08G2S, Sv-08G1S, and SG-1, 2, 3. A new technology that has been developed to obtain this product provides for mechanical scale removal, dry drawing of the wire rod to an intermediate diameter of 1.7–2.2 mm, then — without an intermediate heat treatment — wet drying combined with electrochemical copper-plating of the wire surface. The diameter of the wire is 1.6—0.8 (0.6) mm. The advantages of the new technology for making welding wire are obvious: a reduction in production cost due to the elimination of pickling and heat treatment for the rod; an improvement in the environmental situation at the manufacturing plant. __________ Translated from Metallurg, No. 2, pp. 64–70, February, 2007.     

Mass transfer in gas-liquid layer on vortex contact stages

The results of studying mass transfer in a gas-liquid layer on vortex contact stages with tangential swirlers are presented. Relationships for calculating the mass transfer coefficients and Murphree efficiency are derived.