 522  231. Fraction C, of which the lipid A content bad been markedly lowered, still retained 3.0 per cent nitrogen and thus contained appreciable protein which may have exerted an influence in the biological activity of this preparation. For this reason, further studies were conducted as detailed below. 232. The prepared fractions were analyzed for total lipid, unesterified and total cholesterol, lipid phosphorus, and total nitrogen. Direct protein analyses were not carried out because, in trials using several commonly employed methods, the opalescence and fatty nature of the fraction recovered from extract-treated sera had been found to interfere with such analyses. 233. Contributing to these losses are the coaxial cables which couple the electronics canister to the radial power splitter and the cables which connect the outputs of the power splitters as antenna feeds to the hybrids. 234. As one migth expect, makers of business machines and home appliances use heat treated steels in stress-bearing parts as do automotive manufacturers. Although cost is just as important a factor as it is to the automakers, the pattern of usage is somewhat different because these two industries make such a wide variety of products. 235. Only those femoral heads completely out and above the acetabular limbus were considered to be dislocations. All the x-rays of patients included in this series were reviewed and classified as showing subluxation or dislocation, according to the mentioned criteria. Of the 68 subluxated hips in this series, 52 were originally diagnosed as dislocation on the hospital records. 236. We know that the old mountains are gradually being washed away by the rain, and that new mountain ridges rise from time to time as the result of tectonic activity, but all these changes are still only the changes of the solid crust of our globe. It is not, however, difficult to see that there must have been a time when no such solid crust existed at all and when our Earth was a glowing globe of melted rocks. 237. Hence, a pulse train is established with a pulse repetition frequency (prf) determined by the time necessary for the acoustic energy to travel down the river. 238. The clinical diagnosis of pulmonary embolism in older patients is difficult, the signs and symptoms often being attributed either to heart failure or to bronchopneumonia. Moreover, the high incidence of acute myocardial infarction in this group adds further diagnostic difficulty. The present triad allows this difficult differential diagnosis to be made precisely even in geriatric patients with preexisting heart disease. 522 |
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