X-ray adsorption near edge structure (XANES) data at the Co or Ni K-edge, analyzed using the Δμ difference procedure, are reported for dealloyed PtCo x and PtNi x catalysts (six different catalysts at different stages of life). All catalysts meet the 2017 DOE beginning of life target Pt mass activity target (>0.44 A mgPt-1), but exhibit varying activities and durabilities. The variance factors ...

The age-related changes in the electrical and physiological properties of the skin were examined in rats at the ages of 5, 10, 21, 90, and 180 d. The resistance of the stratum corneum, the resistance of the viable skin (epidermis and dermis), and the capacitance of the stratum corneum were analyzed from skin impedance data using an equivalent circuit. With development and aging, the resistance ...

BACKGROUND Texture, color, and durability are important characteristics to consider for skin replacement in conspicuous and/or mobile regions of the body such as the face, neck, and hands. Although autograft thickness is a known determinant of skin quality, few studies have correlated the subjective and objective characters of skin graft healing with their associated morphologic and cellular pr...

Biobrane(®) is commonly used in paediatric burns to cover partial thickness burns and donor sites of split thickness skin (SSG). The purpose of this study is to evaluate the use of Biobrane(®) in dressing SSG adjacent to skin graft donor sites or partial thickness burns. A retrospective review was undertaken to determine the use of Biobrane(®) in dressing SSG, where the grafted areas were adjac...

Objective: To explore the methods for the repair of large-area limb skin avulsion wound. Method: Eleven patients with simple limb skin avulsion underwent large-area stereotypy full-thickness skin graft for wound repair. Results: Wounds were repaired very well as well as the late appearance and functions were satisfactory in all 11 patients. During follow-up, the hypertrophic scars were mild, th...

 ABSTRACT Background: The loop colostomy is one of the most popular techniques used as a protective maneuver for a distal anastomosis and/or temporary fecal diversion. We are introducing the use of a full thickness skin bridge under the large bowel instead of a glass rod which alleviates problems such as protrusion of the large bowel, retraction of the bowel into the abdomen after removing the ...

OBJECTIVE To establish the model of skin scald in mice for the study of skin thermal injuries. METHODS After anaesthetization mice were scalded in a 1 cm-diameter circle area on the central dorsum by boiling water at contact times: 10s or 25s. The mice were sacrificed at 1, 3, 5, 7 and 10 days after scald. The skin samples were collected and analyzed by gross and histopathological examination...

This article presents Navier type closed-form solutions for static bending, elastic buckling and free vibration analysis of symmetric functionally graded (FG) sandwich beams using a hyperbolic shear deformation theory. The beam has FG skins and isotropic core. Material properties of FG skins are varied through the thickness according to the power law distribution. The present theory accounts fo...

The use of autograft skin is essential in the treatment of full thickness burns and large cutaneous defects. Both autograft thickness and condition of the wound bed modulate aesthetic and functional outcomes. Thicker autografts contract less and maintain greater functionality as the scar matures. The presence of hypodermis can also positively affect the eventual appearance and functionality of ...