Oil Aging due to Partial Discharge Activity

Partial Discharge Signatures of Defects in Insulation Systems Consisting of Oil and Oil-impregnated Paper

A Novel Approach to Partial Discharge Monitoring

On-line partial discharge (PD) monitoring has existed in some form since the early 1980s. It is the tool of choice to evaluate the health of the stator insulation on large rotating machines. However, analysis of partial discharge results remains difficult to most users and advanced interpretation is usually reserved for experts in the field. While the hardware development has matured, it hasn’t...

Apparent CBF decrease with normal aging due to partial volume effects: MR-based partial volume correction on CBF SPECT.

Several studies using single photon emission tomography (SPECT) have shown changes in cerebral blood flow (CBF) with age, which were associated with partial volume effects by some authors. Some studies have also demonstrated gender-related differences in CBF. The present study aimed to examine age and gender effects on CBF SPECT images obtained using the 99mTc-ethyl cysteinate dimer and a SPECT...

Occupational asthma due to oil mists.

Twenty five patients who were exposed to oil mists at their place of work were investigated for possible work related asthma. Serial peak expiratory flow recordings showed 13 to have definite work related asthma, seven equivocal work related asthma, and three asthma unrelated to work; two had normal recordings. Subjects with work related asthma often produced different patterns of peak flow res...

Lithium changes due to biorhythms and changing activity of epiphysis

Considering the physiological role of epiphysis in functional activity and defense reactions of the body, this study was carried out to evaluate changes of lithium level due to biorhythms of epiphysis. For this purpose, albino mice (6-month old) were used. The animals were kept in light (resulting in inhibition of the activity of epiphysis) and dark (which increases the activity of epiphysis) e...