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Three common finishing treatments of stainless steel that are used for equipment during poultry processing were tested for resistance to bacterial contamination. Methods were developed to measure attached bacteria and to identify factors that make surface finishes susceptible or resistant to bacterial attachment and biofilm formation. Samples of the treated surfaces (sand-blasted, sanded, and electropolished) were exposed to natural bacterial populations from chicken carcass rinses to allow growth of bacteria and development of biofilms on the surfaces. The kinetics of bacterial growth during surface exposure was followed by UV-visible spectrophotometry, and counts of bacteria and early biofilm formation were measured following scanning electron microscopy (SEM). The surface morphology of the samples was analyzed by atomic force microscopy (AFM) with samples from each of the batches of treatments used in the SEM studies. Relative differences in the surface morphology, including fractal dimensions, Z ranges, roughness, and other measurements corresponded by treatment with the differences in reduction of bacterial counts shown by SEM. The surface types varied in affinity for bacteria, and both physical and electrochemical treatments improved resistance of stainless steel to bacterial attachment. Electropolished stainless steel was the least rough surface and showed significantly fewer bacterial cells and beginning biofilm formations than the other treated surfaces. Food safety could be improved if bacterial populations could be reduced during processing by increasing the use of materials that are resistant to bacterial contamination. These findings will aid equipment manufacturers and processors in selecting materials and finishes that are most resistant to bacteria and biofilm formation.

In order to determine the needs and goals of substance abuse teaching, vis-à-vis child psychiatry training, a questionnaire was sent to the training directors at every child psychiatry program accredited by the Accreditation Council of Graduate Medical Examination. The results demonstrated that most child psychiatry programs schedule at least some didactic time specifically for substance abuse topics. However, only 59% of the training directors felt that their fellows were adequately educated to identify and at least initially manage a drug abusing adolescent.

The literature on substance abuse in youth is reviewed and current terminology is defined. Perspectives are presented on epidemiology, etiology, diagnosis and differential diagnosis, prevention, treatment, outcome, associated problems, issues of interface with other professionals, and directions for future research. Substance abuse in children and adolescents is a major public health problem. The definitive cause is unknown; there is a progression from legal to illegal drugs. Prevention methods are most effectively aimed at stopping initial use, and treatment remains variable. Child and adolescent psychiatrists are encouraged to become more involved in the problem.