Biomedical subjects
Publications and source records attributed to F E Barton.
Nipple reconstruction by dermal-epidermal advancement flaps from the latissimus dorsi skin island was performed in 10 consecutive patients. There was no tissue loss and the nipples are still prominent 16 months after operation. The technique avoids further donor-site distortion and benefits from the use of available tissues with uninterrupted circulation.
The human nose poses a difficult problem to the management of cutaneous malignancies, especially basal-cell carcinoma. Located in the center of the face, it is frequently involved with skin tumor, yet its prominent location and graceful contours present a formidable reconstructive challenge. Histographic excision of the lesion with immediate plastic surgical reconstruction offers the best prospects for tumor control with the least residual deformity.
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The author's experience with reconstruction of acquired defects of the nasal lobule is presented and documented by two clinical case reports. The first patient exemplifies the conceptual approach to alar reconstruction, which consists of constructing all the elements of the forehead prior to transfer. This technique not only preserves aesthetic detail, but the reconstruction may be done in a minimum number of stages. The second case study illustrates reconstitution of the nasal tip, with emphasis on achieving a delicately curved, soft triangle area. This was accomplished by use of the gradual contracture of a split-thickness skin graft and a raw surface at the edge of the nasal alae.
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Technical details are provided for making slides of several types for lecture or teaching. Advantages are simplicity, versatility, speed, high quality, and low cost.
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A collaborative study was conducted to determine the standard error of difference among laboratories for near-infrared reflectance spectroscopic (NIRS) determination of acid-detergent fiber (ADF) and crude protein in forages. The 6 participating laboratories were members of the USDA/ARS National Near-Infrared Reflectance Spectroscopy Forage Research Project. The NIRS calibration equations were developed in the Associate Referee's laboratory for crude protein and ADF and were transferred to the instrument in each of the other collaborating laboratories. The calibration set included over 650 diverse forage samples with crude protein and ADF calibration data; the validation set included 94 samples of bermudagrass. Among-laboratory reproducibility for the NIRS method, calculated as the relative standard deviation for reproducibility (RSDR), was 1.14% for ADF and 0.42% for crude protein. The variance component for among-laboratory variation (coefficient of variation) was 2.54% for ADF and 2.89% for crude protein. These results confirm that it is possible to calibrate, validate, and transfer (NIRS) equations and data among laboratories for the accurate determination of ADF and crude protein, and thereby demonstrate that NIRS can be used as a standard method for the analysis of forages. The method has been adopted official first action.