• 한국연소학회:학술대회논문집
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• 2012.04a
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• pp.43-46
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• 2012

The oxygen concentration of primary oxidizer is decided under 10% due to flammable risk. It can be a spontaneous combustion inside burner or tube if the excess oxygen is added to primary oxidizer in Oxy-PC burner. In this case, the rest oxygen which can not be injected to primary oxidizer should be injected to another port. If added it to a second oxidizer, the ignition is unstable at outlet of burner. Accordingly an extra lancing port is needed to insert into the burner unlike other common air mode. And the flame formation and combustion characteristic differ from lancing port position. Therefore we observed flame formation which has stable combustion characteristic according to the shape and position of lancing port.

• Journal of the Korean Data and Information Science Society
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• v.27 no.1
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• pp.203-215
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• 2016

This study was performed in order to investigate the effect of breast milk on pain relief in newborn during heel lancing. Nonequivalent control group pretest-posttest design by double blinded experiment was used. 50 neonates were randomized to receive breast milk (experimental group, n=25) or no treatment (control group, n=25) before undergoing heel lancing. Informed consent was obtained from parents of 50 neonates. Neonatal infant pain scale (NIPS), respiration rate, heart rate, oxygen saturation, and crying duration were used to assess subjects' pain reaction. Data were analyzed using SPSS 18.0. The experimental and control group showed a statistically significant differences in NIPS score (F=28.89, p<.001), heart rate (F=14.03, p<.001), respiration rate (F=4.79, p=.001), oxygen saturation (F=2.69, p=.027), and crying duration (t=-8.78, p <.001) at each time points (during heel lancing, right after heel lancing, 1, 2, 3 minutes after heel lancing). The result suggest that oral administration of expressed breast milk is safe and natural agents for reducing procedural pain of neonates. Another clinical trial study with more samples is recommended.