• The Korean Nurse
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• v.6 no.5 s.31
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• pp.101-105
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• 1967

• The Journal of the Korea Contents Association
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• v.11 no.5
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• pp.280-290
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• 2011

The purpose of this study was to increase accuracy in performing cardiopulmonary resuscitation through comparing accuracy between chest compression and artificial respiration depending on position, gender, and weight of a victim given conducting cardiopulmonary resuscitation. This study randomly sampled 72 college students in G Province (36 in the experimental group and 36 in the control group) to conduct a research from November 5 to 19, 2009. The collected data were analyzed by using an SPSS WIN 12.0 Version program. Since the results showed that most regions got more effective artificial respiration and chest compression on the right side than on the left side, it is necessary to apply cardiopulmonary resuscitation on the right side in terms of how to implement and instruct cardiopulmonary resuscitation in the future. However, it seems that continuous researches are necessary to see if cardiopulmonary resuscitation is more effective on the right side in terms of the survival rate in an actual emergency.

• Journal of Korean Society of Forest Science
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• v.98 no.4
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• pp.392-398
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• 2009

Artificial Asian dust was treated in this study to compare and determine its effect on growth, photosynthesis, respiration and stomata of 5 species trees. Sophora japonica's growth and respiration using artificial Asian dust treatment which is 10 times of average contents of Asian dust: $5,000{\mu}g{\cdot}m^{-2}$ decreases after 3 weeks while no significant difference in other species. The maximum photosynthesis of Sophora japonica and Betula pendula decreased significantly after 3 weeks and 6 weeks, respectively, using artificial Asian dust treatment which is average contents of Asian dust: $500{\mu}g{\cdot}m^{-2}$. At $5,000{\mu}g{\cdot}m^{-2}$ treatment, photosynthesis of both species decreased just after treatment of artificial Asian dust. Quercus acutissima, Quercus mongolica and Acer triflorum have no significant differences. Dust was found inside the Sophora japonica's stomatas under heavy dust treatment when viewed under the light electron microscope. By scanning electron microscopy, the higher rate of stomatal opening of Sophora japonica and Betula pendula was recognized and the size of both stomatas was bigger than other species. This result means that Asian dust has an influence in decreasing the photosynthesis, respiration and growth of some species especially if the stomatas are large.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.3
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• pp.420-426
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• 2020

In this study, an assistive device for BVM (Bag Valve Mask) was developed. When emergencies occur, rescuers must perform artificial respiration within four minutes utilizing suitable BVM. If not, the patient can suffer serious damage within their brain and body systems. The rescuer must execute artificial respiration until the patient arrives at the hospital. In the process of artificial respiration, the rescuer can feel fatigued in their forearm muscles, particularly those who may have smaller hands or weaker muscle strength. Many products have been developed to solve these problems, but these products are difficult to market and commercialize because of their volume, size, and difficulty of use. In this paper, the BVM assistive device that has been previously manufactured was improved, and an attempt was made to devise a new method that reduces the burden on the user. The BVM assistive device can be divided into three-parts: a head part for compressing the air bag, which can control the amount of air; the body part for coupling with BVM; and finally, the handle that can rotate for better use on various postures of patients. Throughout the experiment, the assistive device could inject an equal amount of air into the patients. As a result, the rescuer could feel less fatigue and inject a suitable amount of air to emergency patients during artificial respiration.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.26 no.3
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• pp.19-28
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• 2023

The purpose of this study is to estimate carbon dioxide emissions from soil microbial respiration by forest type of Sobaeksan National Park. As a result of estimating the annual soil microbiological respiration volume by forest type in Sobaeksan National Park, broad-leaved forests, coniferous forest, artificial forests were similar to around 19.5 CO₂-ton/ha/yr. In the case of coniferous forests in sub-alpine and grassland near Birobong Peak, 12.2 CO₂-ton/ha/yr and 8.1 CO₂-ton/ha/yr, respectively, were lower than general forest areas. And as a result of analyzing the changes in soil microbiological respiration rate according to forest type in Sobaeksan National Park, the soil microbiological respiration rate in coniferous forests, broad-leaved forests, artificial forests, and sub-alpine areas was the highest in the July survey in summer and the lowest in November in late autumn. The change in soil microbial respiratory volume according to the measurement time in Sobaeksan National Park was the highest between 12:00 and 16:00, when the soil temperature was generally the highest among the days. It is known that the soil temperature is relatively low and the amount of soil microbial respiration decreases during winter, and the change in respiratory volume over the measurement time during the day was the smallest in November, when the amount of soil microbial respiration was relatively smaller than the May-September survey. However, this study has limitations in revealing the causal relationship of various environmental factors that affect the soil microbial respiration. Therefore, it is suggested that long-term research and investigation of various factors affecting soil respiration are needed to understand the carbon cycle of forest ecosystems.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.18 no.4 s.119
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• pp.379-388
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• 2007

This paper presents a real-time respiration and heartbeat detector comprised of a 1.6 GHz single-channel Doppler sensor and analog/digital signal processing block for remote vital sign detection. The RF front end of the Doppler sensor consists of an oscillator, mixer, low noise amplifier, branch-line hybrid and patch antenna. We apply artificial transmission lines(ATLs) to the branch-line hybrid, which leads to a size reduction of 40 % in the hybrid, while its performance is very comparable to that of a conventional hybrid. The analog signal conditioning block is implemented using second order Sallen-Key active filters and the digital signal processing block is realized with a LabVIEW program on a computer. The respiration and heartbeat detection is demonstrated at a distance of 50 cm using the developed system.

• The Journal of the Convergence on Culture Technology
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• v.9 no.5
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• pp.167-173
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• 2023

The purpose of this study was to analyze the accuracy of artificial respiration and chest compressions using CPR mannequins for university students. First, in the number of chest compressions, subjects A, F, H, I, and J showed similar numbers from 60 to 63, respectively, which were much lower than the standard. Subjects B, D, E, and G showed 90 to 91 times, maintaining the normal range. However, C was rather high with 119 times. Second, the depth of chest compression was 58.60mm, and most of them were deeply compressed. Subject C was close to normal at 51mm, and subjects A to J were significantly higher at 55mm to 62mm. The reason seems to be the result of an unstable psychological state with no experience of chest compressions and a lack of self-confidence. Third, in terms of accuracy, subject E showed the lowest accuracy at 12%, and A~J showed 33%~80%. Experiment subject B showed 95% accuracy, which seems to be the result of D accurately recognizing the chest compression point through theoretical training during military service.

• Journal of dental hygiene science
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• v.8 no.4
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• pp.381-386
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• 2008

This study was to examine the knowledge, attitude, self-efficacy, and capability of skill for Dept. of Dental Hygiene students in performing basic skill of cardiopulmonary resuscitation as the following AHA's CPR 2005 Guide-Lines. And we hope to know the influence of those affect on the correctness of chest thrusts, the correctness of artificial respiration, and the correctness of skill performing. As a SPSS 14.0 program's analyzing results, we came to the following conclusions : 1. In the basic CPR's knowledge, the scores of knowledge rose from 5.93 before education to 12.46 after education. In attitude, the scores of attitude rose from 2.52 to 3.71 after education. In self-efficacy's scores, rose from 3.22 to 3.26 too, and all components have statistically significant differences(P < .05). 2. In performing CPR, the correctness of chest thrusts is 68.90%, artificial respiration is 19.00%. 3. Total average score of the capability of skill is 4.51. 4. Only self-efficacy affected the correctness of chest thrusts after education(P < .05). 5. Attitude after education affected both the correctness of artificial respiration and skill performing(P < .05).

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.2053-2054
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• 2011

Cardiopulmonary resuscitation(CPR) is performed by artificial ventilation and thoracic compression for the patient under emergent situation to maintain at least the minimum level of respiration and blood circulation for life survival. Good quality CPR requires monitoring respiration. We developed a system for continuous monitoring respirational signal while CPR, using respirational airflow sensor for CPR. Signal extraction circuit obtains pressure signal while CPR. Obtained signal would be performed analog-digital conversion and changed to airflow value by characteristic formula. Single inspiration and expiration were considered a period. Detected valid data were displayed LCD.

• The Korean Journal of Ecology
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• v.24 no.3
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• pp.141-147
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• 2001

Soil respiration and some environmental factors which affect soil respiration were studied in an oak forest, Kongju, Korea. Soil respiration was measured at midday of the 15th and 30th day at every month in control(Con), artificial forest gap (Gap) and litter removed area (Lr) with portable CO₂ Analyzer equipped soil respiration chamber. In July, maximum soil respiration in Con, Cap and Lr was 15.6, 11.2 and 7.7 CO₂μmol·m/sup -2/·s/sup -1/, respectively. Respiration in Gap and Lr decreased by 28.6% and 50.6%, respectively, compared with that in Con. Annual amount of soil CO₂ evolution from Con, Gap and Lr was 6.86, 5.84, 3.81 kg·m/sup -2/·yr/sup -1/, respectively. Annual amount of CO₂ evolution in Gap and Lr decreased by 14.8% and 44.5%, respectively, compared with that in Con. Soil respiration rates exponentially increased with temperature. Temperature of soil surface and at 5 cm depth was strongly related to soil respiration rates in Con (r₂＝0.87, 0.93), Gap (r₂=0.81, 0.88) and Lr (r/sub 2/=0.89).