Air-activated chemical warming devices use an exothermic chemical reaction of rapidly oxidizing iron to generate heat for therapeutic purposes. Placing these products in a hyperbaric oxygen environment greatly increases the supply of oxidant and thus increases the rate of reaction and maximum temperature. Testing for auto-ignition and maximum temperatures attained by ThermaCare Heat Wraps, Play...

Oocytes collected from superovulated Swiss albino mice were activated by heat-shock and/or fertilized in vitro. Electron microscopy showed that the cortical reaction in heat-treated eggs was incomplete. Digestion of the zona pellucida of untreated, heat-treated and fertilized eggs by pronase showed that zona pellucida hardening did occur but was weaker in heat-treated than in fertilized eggs. F...

In order to clarify the effect of heat-treatment temperature on the reaction between solid steel and inclusions, in this study, the reaction between Fe-Mn-Si alloy and MnO-SiO2-FeO oxide during heat-treatment at 1373 K, 1473 K and 1573 K were investigated using diffusion couple method, respectively. The results indicate that the width of the particle-precipitated zone (PPZ) and the Mndepleted z...

clinical observations with gross and microscopic changes of acute chemical inflammation of fetlock joint by injecting turpentine oil and gentamycin in 4 donkeys 2 to 4 years of age and 150 to 200kg/bw were recorded. the animals coordination, pain at the site of injection, local heat joint circumferences and weight bearing after inducing arthritis in fetlock forelimb and hind limb were noted dow...

The diphosphopyridine nucleotidase exchange reaction, whereby isonicotinic acid hydrazide can replace nicotinamide in the DPN’ molecule, was demonstrated by Zatman el al. (1). Since this reaction provided a possible explanation for the growth inhibition of Mycobacteria by isonicotinic acid hydrazide, methods for measuring DPN in Mywbacteria were investigated. It was found that acetone powder ex...

Silicon microreactors with thin-film wall catalyst were adopted for kinetic studies of CO preferential oxidation (PrOx). The activity of this catalyst was compared to other catalyst systems based on similar formulation. Internal and external mass transport and heat transport limitations of the microreactor were examined and comparisons were made to typical packed-bed lab reactors (m-PBR's). We ...