Why do youth in structurally disadvantaged neighborhoods experience lower levels of informal social control? To answer this question, we examined multilevel data from the Project on Human Development in Chicago Neighborhoods. Using hierarchical regression, we found that (1) neighborhood attachment and satisfaction with police contributed significantly to neighborhood levels of informal social control; and (2) neighborhood attachment and satisfaction with police mediated a substantial portion of the association between informal social control and neighborhood levels of concentrated disadvantage and immigrant concentration.

A direct study of the isolated rat liver perfused with oxygenated blood containing amino acids and lysine-ϵ-C14 has yielded facts indicating that the liver synthesizes practically all the plasma fibrinogen, the albumin fraction, and probably more than 80 per cent of the plasma globulin fraction. The response of the isolated perfused liver in protein synthesis is qualitatively and quantitatively analogous to that of the intact animal, notably in (a) the ability to discriminate between natural L-lysine and D-lysine, (b) the per cent of isotopic amino acid converted to CO2, (c) the per cent utilized in liver and plasma protein synthesis. The results obtained with the perfused liver are compared and contrasted with those reported for tissue homogenates, minces, and slices.

Actuarial risk assessment tools for predicting interpersonal violence and criminal recidivism have proliferated in recent years, promising to enhance their use in the day-to-day operations of the criminal justice and mental health systems. The authors consider the social and political implications of using actuarial tools for social control by offering two specific challenges. First, they argue that actuarial tools are designed primarily to facilitate the efficient management of institutional resources rather than to target individuals or social conditions in need of reform. Second, they argue that the group-based nature of actuarial prediction methods may contribute to the continued marginalization of populations already at the fringes of the economic and political mainstream.

1. The effect of insulin on apolipoprotein (apo B) secretion was studied in 24 h recirculating liver perfusions of isolated normal, diabetic and insulin-treated diabetic rats. In single perfusions from each group apo B accumulated in the media in a linear fashion. 2 In perfusions of normal rat livers, when the medium contained insulin plus cortisol, apo B production was significantly inhibited (by 35.8%), demonstrating a hormone effect on apo B secretion. 3. In perfusions of diabetic-rat livers, apo B production was decreased to 11.8% of normal when the medium contained no hormones, and was not significantly changed by the addition of insulin plus cortisol to the medium, suggesting that the hormone effect on apo B secretion is missing in long-term hypoinsulinaemic states. 4. Treatment of diabetic rats with daily insulin injection restored apo B production and restored the effect of insulin plus cortisol in the medium to inhibit apo B secretion during perfusion. 5. Parallel studies of apo B secretion with insulin alone, cortisol alone and insulin plus cortisol in the medium were performed in primary cultures of hepatocytes to compare results from liver perfusions. 6. Apo B secretion by hepatocytes from normal, diabetic and treated-diabetic rats was inhibited (by 36.8%, 57.1% and 57.9% respectively) when insulin alone was added to the medium. 7. Insulin plus cortisol inhibited apo B secretion by hepatocytes from normal and treated diabetic rats (by 30.2% and 47.2% respectively), but failed to inhibit apo B secretion by hepatocytes from diabetic rats.

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