PubMed Health⌕ Search

Biomedical subjects

P M Erickson

Publications and source records attributed to P M Erickson.

5 recordsLinked to original sources

Hospital resource utilization by American Indians/Alaska Natives for alcoholism and alcohol abuse.

Previous work examining the issue of alcoholism and alcohol abuse among American Indians and Alaska Natives can be broadly categorized as either descriptions of the consumption patterns and behaviors of specific tribes or mortality studies, focusing on deaths due to alcoholism, alcohol abuse, chronic liver disease, or cirrhosis. A major shortcoming of previous studies has been that they have not looked at the burden this problem has imposed upon the system of health care delivery for this minority population. By using an International Classification of Diseases, Ninth Revision, Clinical Modification taxonomy of diagnostic codes developed by the National Institute on Alcoholism and Alcohol Abuse (NIAAA) and the national Indian Health Service (IHS) inpatient database for direct and contract admissions, utilization patterns for 43 IHS facilities were investigated. The period of study was 1980-1988, and our case definition included any individual 14 years and older who had any mention upon discharge of an alcohol-related diagnosis (ARD). For the 9-year period under investigation, 43,302 adult inpatient admissions occurred at the 43 IHS facilities for ARD. These admissions accounted for an overall estimated per annum rate of 13.7% of the adult inpatient days. In addition, age and gender specific discharge rates for ARD were estimated and compared to reported ARD discharge rates of the United States civilian population prepared by the NIAAA using the National Hospital Discharge Survey over the period 1979-1988. In contrast, the IHS discharge rates for ARD were three times greater than reported ARD discharge rates for the United States civilian population.

Adolescent↗

Effects of sampling location on data sensitivity in a three compartment model.

A computer simulation of a three compartment model was developed to examine the effect of sampling location on the accuracy of estimates of system parameters. Results indicate that the best estimates are obtained when all three compartments are sampled. Sampling from only one compartment tends to result in the poorest estimates.

Biometry↗

Ferrous Iron Oxidation by Thiobacillus ferrooxidans: Inhibition with Benzoic Acid, Sorbic Acid, and Sodium Lauryl Sulfate.

Benzoic acid, sorbic acid, and sodium lauryl sulfate at low concentrations (5 to 10 mg/liter) each effectively inhibited bacterial oxidation of ferrous iron in batch cultures of Thiobacillus ferrooxidans. The rate of chemical oxidation of ferrous iron in low-pH, sterile batch reactors was not substantially affected at the tested concentrations (5 to 50 mg/liter) of any of the compounds.

Journal Article↗

The pentaammineruthenium(III)-histidine complex in ribonuclease A as an optical probe of conformational change.

The formation of stable transition metal complexes between pentaammineruthenium(III) and the imidazole moiety of histidine residues in ribonuclease A is described. Studies of the kinetics of incorporation suggest that three of the four histidines are reactive and ion-exchange chromatography affords the isolation of three derivatives containing a single ruthenium-histidine complex. Equilibrium studies of the thermal- and urea-induced unfolding of one of these derivatives show that the ligand-to-metal change-transfer absorptions above 300 nm can be used to follow the conformational changes in the vicinity of the complex. For the urea-induced unfolding of this derivative, the coincidence of the transition curves obtained from the change-transfer absorptions and from difference ultraviolet spectroscopy at 286 nm, which measures the exposure of buried tyrosine residues to solvent, suggest that only two conformations, native and unfolded, are present at equilibrium in significant concentrations.

Animals↗

A combined post, core, and endodontic endosseous implant. Case report.

A hyperextended chrome-cobalt post and core also used as an endodontic endosseous implant served to stabilize a short mobile root and to provide for placement of a porcelain veneer metal crown. The technique is not complicated and does not require instruments other than those for routine endodontic treatment and for the construction of the post and core.

Adult↗