Alumina-zirconia (AZ) composites are attractive structural materials, which combine the high hardness and Young's modulus of the alumina matrix with additional toughening effects, due to the zirconia dispersion. In this study, AZ composites containing different amounts of zirconia (in the range 5-20 vol %) were prepared by a wet chemical method, consisting on the surface coating of alumina powd...

BACKGROUND Cryosurgery is the most commonly used method to treat actinic keratosis (AK). Cryosurgical methods are not standardized. OBJECTIVE To examine differences in the spray techniques used for liquid nitrogen cryosurgery when treating AKs of the head, and the effect of these variations in technique on rates of complete clearance of AKs. MATERIALS AND METHODS Patients were those from th...

The metabolism of anti-breast cancer drug, tamoxifen, in a single human hepatocellular carcinoma cell, HepG2, was directly monitored by a video-mass spectroscope. The cytoplasm, a vacuole or nucleus of the cell was directly sucked by a nano-spray tip under a video-microscope, and then was introduced into a mass spectrometer. Unchanged drug molecules were found in cytoplasm and a vacuole, but ...

3D-printed cartridges were designed and fabricated to improve the paper spray ionization method for mass spectrometry (MS). The cartridges protect the fragile paper material, stabilize the tip to prevent warping and misalignment and facilitate interfacing with mass spectrometry. Most importantly, the cartridge enables sophisticated control over solvent flows. Integrated wetting features enable ...

Palmer amaranth (Amaranthus palmeri) is known to be glyphosate-resistant and one of the most common and troublesome weeds in Arkansas cotton production. Glufosinate is known to provide good control of 1-4 inch Palmer amaranth, but control of larger weeds is erratic. The lack of control provided by glufosinate on large weeds may be caused by coverage issues. The objective of this study was to ev...

SUMMARY Removal of an intact, inflated tissue expander can result in uncontrolled spillage of expander contents on the drapes, surgeons, staff, or patient. The technique described has been used for the past 4 years to eliminate these spillage concerns. It is simple and inexpensive using common disposable supplies found in any operating room. An irrigating syringe is modified by cutting away its...