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Biomedical subjects

J A Weiss

Publications and source records attributed to J A Weiss.

24 records · Page 2Linked to original sources
PubMed1981

Substance vs. symbol in administrative reform: the case of human services coordination.

In recent years the most popular strategy of reform in the human services arena has been to foster coordination among agencies serving the same populations. The certainty of difficulties in implementing coordination programs and the uncertainty of achieving improvements in service delivery have not dimmed the enthusiasm among policymakers for these programs. This persistent popularity seems to be rooted in the strong symbolic appeal of "coordination," which has overridden attention to evidence about performance.

Government Agencies↗
PubMed1977

Rapid method for auxotyping multiple strains of Neisseria gonorrhoeae.

A rapid method for auxotyping strains was developed that uses microtiter plates. This miniplate technique enables rapid identification of major auxotypes present in clinical strains. Additional growth requirements can be identified by adding individual amino acid supplements to complete gonococcal genetic medium. Analysis of 8 clones from 40 patients revealed that 10 had more than 1 auxotype. Deoxyribonucleic acid-mediated transformation can be used to establish whether the strains with apparently more than one auxotype are defective in the same locus in each of the involved biosynthetic pathways. Selection of more than one clone is required in precise epidemiological studies.

Amino Acids↗
PubMedDate not supplied

Soft tissue fixation to bone. A biomechanical analysis of spiked washers.

The initial fixation strengths of two spiked-washer designs were evaluated using human femurs and fascia lata tissue. Fascia lata was attached to the femur using the fixation devices, and then each femur-washer-fascia lata complex was loaded in tension to failure. Load-elongation curves were recorded, the initial failure load, initial failure displacement, stiffness, ultimate load, and ultimate displacement were determined for each test, and failure modes were recorded. Results indicated that the 6-spike design provided superior initial fixation strength in the 19-mm diameter size. This washer design was then compared with two commercially available fixation devices: the spiked AO washer and soft tissue fixation plate. Fixation provided by the prototypal washer design was not different in most instances from that provided by the AO fixation devices. Based on these results, important design characteristics for soft tissue spiked washers are identified and discussed.

Acetals↗