Lead bars of various height-to-width ratio have been rolled down in a model rolling mill to reductions of as great as 60 percent between rolls designated as smooth, partially rough, and rough. The results of experiments to determine the amount of spread which each bar undergoes are presented nondimensionally, and these are compared with the spread formulas of Wusatowski, Hill, and Sparling.

Bipolar disorder is a psychiatric illness that is relatively common among patients presenting for treatment in primary care clinics. Physicians in primary care often face difficult decisions about how and when to intervene when a patient is experiencing depressive, manic, or hypomanic episodes consistent with bipolar disorder. This article reviews the literature on how to assess and diagnose bipolar disorder in primary care, and how to choose from the array of treatment options that exist. The psychotherapy and pharmacotherapy evidence base provides guidance on how to help patients effectively manage this ailment. Collaboration among health and mental health practitioners is key in helping manage the “peaks and valleys” of bipolar disorder. Special considerations need to be made to routinely assess for impulsivity, suicidality, and patient progress throughout the course of treatment.

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