The Loss and Persistence of Black-Owned Farms and Farmland: A Review of the Research Literature and Its Implications *
A method of forming an improved planarization mask for shallow trench isolation process area in integrated circuit manufacturing is disclosed. The planarization mask is generated automatically by using actual mask data as a reference. The invention discloses an algorithm which measures the geometric and relative separation distances of the active areas and performs the necessary merging, deletion and differential biasing to produce the planarization mask which has relaxed geometric boundaries, thereby allowing low cost and simplified manufacturing.
NEGRO FARM OWNERSHIP IN THE SOUTH
ABSTRACT Rural Negroes achieved farm ownership in the southern United States after the Civil War. The number of Negro farm owners has declined substantially from a peak of more than 200,000 around World War I, yet they remain significant in some areas. The small size of Negro farms, and the limited capital of their owners, will make their survival difficult. Many of these landholdings now have greater social value than economic significance.
Cholesterol synthesis from acetate in the diabetic liver.
Brady and Gurin (1) recently compared the ability of liver slices prepaped from both normal and diabetic rats to incorporate added acetate into cholesterol. They drew the conclusion that the conversion of acetate to cholesterol in the diabetic liver is “apparently unimpaired, although this process may be inhibited when diabetes is sufficiently prolonged and severe.” In view of our interest in the relation of cholesterol synthesis to arteriosclerosis, the development of which is generally regarded as being accelerated in diabetes (2), we have reinvestigated cholesterol synthesis from acetate in diabetes. A definite increase in cholesterol formation in the diabetic liver is demonstrated here. It is further shown that, as a result of insulin injections in a diabetic rat, slices subsequently prepared from its liver have a reduced capacity to synthesize cholesterol.