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Biomedical subjects

I J Lewis

Publications and source records attributed to I J Lewis.

87 records · Page 5Linked to original sources
PubMed1976

The 1977 U.S. budget: a time for choice?

This paper continues to spin the thread of previous analyses of the bleakness of the budgetary outlook in the United States and the difficulty of change. The budget remains mortgaged by actions in previous years, and the economic outlook is uncertain. "The politics of frugality" has come to dominate the American political scene, but the President's choices to reduce spending on human resource programs by $18 billion are more apparent than real. The new Congressional review procedures, a reaction to the Watergate years, interrelate budget with health policy and highlight the necessity for action to control medical care prices if any new federal initiatives, e.g. national health insurances, are to be budgetarily feasible.

Economics, Medical↗
PubMed1976

A comparison of the effect of two regimens of infestation on the development of resistance by cattle to the cattle tick, Boophilus microplus (Can.).

The development of resistance to Boophilus microplus by cattle was studied using sets of cattle twins, in stalls. One twin from each set received 3 infestations of 40,000 larvae and the other a continuous infestation of 1,000 larvae a day over the same period. Sets of twins were then challenged with 1,000 larvae a day for 40 days and 2 field infestations of 20,000 larvae. Correlations of ranking for resistance made at 40-day periods during daily infestations of 1,000 larval ticks or for corresponding intermittent infestations of 40,000 larvae were low until animals had received 120,000 larvae. Thereafter irrespective of method of infestation correlations of ranking were relatively high (r = 0.61-0.96) between periods of infestations or method of infestation including 2 field infestations. Fewer adult female ticks matured on the daily infested animals than on the intermittently infested animals during the treatment period, but animals developed a similar resistance level whether infested with either technique.

Animals↗