A study has been carried out to determine the effect of coating two commercial glass-ionomer cements in either petroleum jelly or wax. After coating, specimens were stored in water for 24 or 168 hours, then the coating removed and the surface examined. Coating in wax was found to increase the surface hardness significantly compared with the uncoated control, whereas coating the specimens in pet...

OBJECTIVE To determine the most effective treatment parameters for laser-assisted hair removal using a Q-switched neodymium:yttrium-aluminum-garnet (Nd:YAG) laser. DESIGN Prospective study to determine the effectiveness of Q-switched ND:YAG laser-assisted hair removal under varying pretreatment protocols. Hair growth was assessed after laser treatment, and the results were compared with those...

This paper introduces novel vacuum/compression valves (VCVs) utilizing paraffin wax. A VCV is implemented by sealing the venting channel/hole with wax plugs (for normally-closed valve), or to be sealed by wax (for normally-open valve), and is activated by localized heating on the CD surface. We demonstrate that the VCV provides the advantages of avoiding unnecessary heating of the sample/reagen...

Statistically significant differences were found in 14 needle traits of western white pine (Pinus monticola Dougl.) seedlings grown from the same seed orchard source in the three nurseries in northern Idaho. Traits with significant variation included needle length and width, number of stomatal rows, number of stomata per row, total stomata per needle, adaxial surface area, stomatal density, maj...

succinate contained increasing amounts of wax as the specific growth rate decreased from 0.7h-I to 0.12h-I. The wax composition also varied with dilution rate, samples having a high wax content had palmitic acid and palmityl alcohol as major components. In continuous culture with succinate limitation and excess of nitrogen, the bacteria contained only small amounts of waxes, which increased sli...

This early wax modeling was known as ‘Anatomica Plastica’, where minute details of the human anatomy were depicted by wax models. The next logical step was illustration of diseases by use of wax models (Patho-anatomica plastica) and wax models (moulages) were used in various medical specialities like surgery, obstetrics, ophthalmology etc but it was in dermatology that these reached heights of ...

Chalkbrood disease in honeybees (Apis mellifera L.) is caused by an infection with Ascosphaera apis. Disease expression requires the consumption of fungal spores and a predisposing condition in the susceptible brood. A. apis spores within sheets of wax foundation could be a source of inoculum leading to chalkbrood, but it is also possible that these spores remain confined in the wax and do not ...

The activity of a wax ester hydrolase in the cotyledons of jojoba (Simmondsia chinensis) seedlings increased drastically during germination, parallel to the development of the gluconeogenic process. The enzyme at its peak of development was obtained in association with the wax body membrane, and its properties were studied. It had an optimal activity at alkaline pH (8.5-9). The apparent K(m) va...

•g Purified wax•h as isolated by Anderson (1929), is a complex lipid extracted with chloroform from cultures of acid fast bacilli. Extracting the purified wax with boiling acetone, Asselineau (1951) obtained a soluble portion termed •gWax C•h and an insoluble residue, the •gWax D•h fraction. Likewise, the alcohol-ether soluble part of acid fast bacilli was classified into several fractions. •gP...

An improved process for slip casting ceramic articles that does not employ parting agents and affords the casting of complete, detailed, precision articles that do not possess parting lines. A wax pattern for a shell mold is provided, and an aqueous mixture of a calcium sulfate-bonded investment material is applied as a coating to the wax pattern. The coated wax pattern is then dried, followed ...