• The Journal of the Society of Korean Medicine Diagnostics
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• v.11 no.1
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• pp.146-156
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• 2007

1. The effect of variations in inspiration and expiration times on heart rate variability was studied in 78 healthy subjects (mean age $24.35{\pm}1.92$ years; 47 male) between regulated respiration group and normal respiration group as the control group. 2. The control group followed normal respiration pattern, whereas the regulated group followed three types of respiration pattern. The first pattern was long respiration(E/I ratio 1.6:1), the second pattern was short inspiration followed by long expiration (SILE), and the last pattern was long inspiration followed by short expiration(LISE). The average expiration/inspiration time ratios of SILE and LISE were 1.0 and 3.4, respectively. The respiration rate in the regulated group was approximately 10 cycles/min. 3. Respiration rate and tidal volume are respiratory variables known to modulate RSA. The results of the present study indicate that RSA can also be modulated by a third respiratory variable, the expiration/inspiratory time ratio. In this study, LF, HF, RSA, VLF is increased the most in LISE group compared to the other groups. HF and RSA increased significantly in the long respiration rate and SILE groups. However LF and VLF, which reflects the sympathetic tones, did not increase as much as the LISE group.

• The Bulletin of The Korean Astronomical Society
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• v.38 no.2
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• pp.52.2-52.2
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• 2013

We explore the relative importance of the role of small-scale environment and large-scale environment in triggering nuclear activity of the local galaxies using a volume-limited sample with $M_r$ < -19.5 and 0.02 < z < 0.0685 selected from the Sloan Digital Sky Survey Data Release 7. The active galactic nuclei (AGN) host sample is composed of Type II AGNs identified with flux ratios of narrow emission lines with S/N > 6 and the central velocity dispersion of the sample galaxies is limited to have a narrow range between 130 < ${\sigma}$ < 200($km\;s^{-1}$), corresponding to 7.4 < $log(M_{BH}/M_{\odot})$ < 8.1 in order to fix the mass of the supermassive black hole at the center of its host galaxy. In this study, we find that the AGN fraction ($f_{AGN}$) of late-type galaxies are larger than of early-type galaxies and that for target galaxy with late-type nearest neighbor, $f_{AGN}$ starts to increase as the target galaxy approaches the virial radius of the nearest neighbor (about a few hundred kpc scale). The latter result may support the idea that the hydrodynamic interaction with the nearest neighbor as well as tidal interaction and merger also plays an important role in triggering the nuclear activity of galaxy. We also find that early-type cluster galaxies show decline of AGN activity compared to ones in lower density regions, whereas the direction of dependence of AGN activity for late-type galaxies is opposite.

• Journal of Korean Biological Nursing Science
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• v.14 no.1
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• pp.57-65
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• 2012

Purpose: The purposes of this study were to identify the effect of music therapy on the physiologic index, anxiety and dyspnea of patients who are weaning from mechanical ventilators, and to compare the effects between western and Korean traditional music. Methods: The research format is repeated measures design. The subject group consisted of 21 patients being weaned from mechanical ventilators in a tertiary general hospital in Seoul. Each patient randomly received western music, rest, and Korean traditional music. Western and Korean traditional music were played on an MP3 head phone for 30 minutes. Patients get 30 minutes of rest between the 2 music styles and the rest period. Physiological indices, anxiety and dyspnea were measured before and after patients listened to both styles of music and the rest period. Anxiety and dyspnea were measured with a visual analogue scale. Results: Respiratory rates (RR), rapid shallow breath indexes (RSBI), anxiety and dyspnea decreased, and tidal volume (TV) increased after listening to Western and Korean tradition music in patients weaning from mechanical ventilators. Compared to western music, Korean traditional music yielded significant decreases in RR, RSBI, anxiety and dyspnea, and an increase of TV. Conclusion: Western and Korean traditional music would decrease RR, RSBI, anxiety and dyspnea and increase TV of patients who are weaning from mechanical ventilators. The effects are more pronounced in patients listening to Korean traditional music compared to western music.

• Journal of Veterinary Clinics
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• v.16 no.1
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• pp.69-74
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• 1999

This study was performed to evaluate the anesthetic effects of the epidural administration of tiletamin-zolazepam and lidocaine to rats. Blood pressure, heart rate, respiratoty rate and blood chemistry were examined according to the time lapse, after the administration of tiletamine-zolazepam, lidocaine or saline. The results obtained were as follows. 1, Tiletamine-zolazepam group revealed fast anesthesia onset time (p＜0.01) and also revealed prolonged ambulation time compared with lidocaine group (p＜0.01). 2. In the effects of blood pressure, tiletamine-zolazepam group revealed significantly higher value than lidocaine group or saline group, and revealed the highest value at 20 minutes after administration. According to the time lapse, blood pressure of tiletamine-zolazepam group was recovered and showed similar value with lidocaine group and control group at 90 minutes after administration. 3. In the effects of heart rate, tiletamine-zolazepam group revealed significantly lower value than lidocaine group or saline group and revealed the lowest value at 30 minutes after administration, and recovered similar value with pre-administration at 90 minutes after administration. 4. In the effects of respiratory rate, lidocaine group revealed significantly lower value at 30 minutes administration compared with 0 and 60 minutes after administration (p＜0.01). Tiletamine-zolazepam group also revealed significantly lower value at 30 minutes compared with 0 and 60 minutes after administration (p<0.01). The changes at 60 minutes after administration, lidocaine group revealed lower value than saline or tiletamine-zolazepam group, and tiletamine-zolazepam group revealed similar value with 0 minutes. 5. In the effects of tidal volume, lidocaine group revealed significantly lower value than saline group (p＜0.001) and tiletamine-zolazepam group also revealed lower value than saline group, at 30 minutes after administration. The values at 60 minutes after administration, revealed similar results with that of 30 minutes after administration. 6. In the blood chemistry, the values of alanine transminase (ALT), aspartate transminase(AST) and creatinine did not reveal significant results at 60 minutes after administration. The values of ALT at 60 minutes slightly decreased compared with pre-administration, and revealed normal level.

• The Korean Journal of Physiology
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• v.10 no.2
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• pp.11-16
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• 1976

In hold that the pulmonary functions which is important situation that the national physical power, at firstly, from age 10 to age 29 young men and women 1,540 person for the progress of grew up, and them to by each aged viewing transition for pulmonary functions physical examination record is as following; and to measure normal Person with comparison by each others pulmonary functions was gained as the results of follows. 1) Frequency of Breathing: It was same the male and female age at 10 per minute over or less of 20 times, but, at age 16 to 17 was $15{\sim}16$ times, and had to precensed compare constant value. 2) Vital Capacity: At the grew up Pregress term as the body stature, age 10 to 17 or 18, had to showing rapidly increasing, but the after Probably constant. The comparison value in man and women in progress of growth up was about $200{\sim}300ml$, and after growth of progress are about 1,500ml, add in men was presence more highly value. 3) Tidal Volume: At a9e 10 was 365m1, but, it was continuing increasing, an4 at age 20 is about 500m1, and the different in men and women about $20{\sim}30$ times and had precense highly value at men. 4) Breathing holding time: It was presence same at male and femele 10 to 13, from 35 second to $37{\sim}38$ seconds, and had to Presence a slight increasing, but, may has to final of the growth progrees age at 14, it should be presence rapidly increasing and the after probably presence as same value but, than female at male is high record average value of $7{\sim}8$ seconds.

• The Bulletin of The Korean Astronomical Society
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• v.35 no.1
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• pp.75.2-75.2
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• 2010

We investigate the dependence of occurrence of bar in galaxies on galaxy properties and environment. The environmental conditions considered include the large-scale background density and distance to the nearest neighbor galaxy. We use a volume-limited sample of 33,296 galaxies brighter than $M_r$=-19.5+5logh at $0.02{\leqq}z{\leqq}0.05489$, drawn from the Sloan Digital Sky Survey Data Release 7. We classify the galaxies into early and late types, and identify bars by visual inspection. We find that the fraction of barred galaxies ($f_{bar}$) is 18.2% on average in the case of late-type galaxies, and depends on both u-r color and central velocity dispersion $(\sigma);f_{bar}$ is a monotonically increasing function of u-r color, and has a maximum value at intermediate velocity dispersion (${\sigma}{\simeq}170km\;s^{-1}$). This trend suggests that bars are dominantly hosted by systems having intermediate-mass with no recent interaction or merger history. We also find that $f_{bar}$ does not directly depend on the large-scale background density as its dependence disappears when other physical parameters are fixed. We discover the bar fraction decreases as the separation to the nearest neighbor galaxy becomes smaller than 0.1 times the virial radius of the neighbor regardless of neighbor's morphology. These results imply that it is difficult for bars to be maintained during strong tidal interactions, and that the source for this phenomenon is gravitational and not hydrodynamical.

• Asian-Australasian Journal of Animal Sciences
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• v.10 no.3
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• pp.318-323
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• 1997

In order to assess the effect of solar exposure on pulmonary functions and evaporative losses from skin and pulmonary surfaces, in six healthy Sahiwal (S) and six Sahiwal ${\times}$ Holstein ($S{\times}H$) cattle were exposed to direct sun during summer. Breed differences were observed during exposure. Increase in sweating rate was higher in crossbreds (222%) than in Sahiwal (125%). Pre-exposure (ambient temperature, $32.6{\pm}0.85^\circ}C$, solar radiation, $0.9cal\;cm^{-2}min^{-1}$) evaporative loss from skin accounted for about 90% of the losses and remaining losses were contributed by pulmonary surfaces in Sahiwal. The contribution of evaporation through skin increased to 92% (ambient temperature $39.4{\pm}0.68^\circ}C$, solar radiation, $1.35cal\;cm^{-2}min^{-1}$). In crossbreds 80% of the evaporative losses were through skin before exposure which increased to 87% after exposure to solar radiations. Rectal temperature increase was higher in crossbreds ($1.5^{\circ}C$) than in Sahiwal ($0.8^{\circ}C$). With the increase in pulmonary evaporative losses, respiratory frequency increased to 2 fold in Sahiwal and pulmonary ventilation increased 1.6 times the resting value in Sahiwal due to solar exposure. In $S{\times}H$ crossbreds the respiratory frequency increased 3.5 times and pulmonary ventilation increased only to 1.8 times due to decrease in tidal volume. There was about 2 fold increase in alveolar ventilation in both the breeds, the increase in dead space ventilation was more in crossbreds than in Sahiwal. Behavioral symptoms exhibited by animals after exposure were profuse salivation, open mouth panting, tongue protrusion and general restlessness.

• Tuberculosis and Respiratory Diseases
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• v.63 no.6
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• pp.526-530
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• 2007

The incidence of acute respiratory distress syndrome (ARDS) has been estimated worldwide to range from 1.7 to 75 cases per 100,000. There are many treatments for ARDS, but only the low tidal volume strategy is based on strong clinical evidence from randomized clinical trials. The efficacy of extracorporeal life support (ECLS) in adults remains controversial. Ongoing clinical trials and research have shown a benefit for its use to salvage severe ARDS patients that are in failure with conventional treatment. We encountered a 41-year-old woman who developed ARDS induced by pneumococcal pneumonia. Despite conventional mechanical ventilation in the emergency room, severe hypoxia remained. We treated the patient immediately with ECLS. The patient has almost fully recovered, and was discharged from a 177-day stay at our hospital.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1979.05a
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• pp.8.2-8
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• 1979

Acute obstruction of the upper airway from trachea, a foreign body or Iaryngospasm may lead to death in a few minutes. The immediate restoration of an adequate airway in these patients may be lifesaving. Spontaneous respiration by means of a needle inserted into the trachea was studied in 21 rabbits using 16, 18, and 20 gauge extrcatheters. The results are as follows; 1) Airway resistance was markedly increased in all experimental animals. consequently tidal volume was also significantly decreased, but this seems to be compensatory by increased of respiratory frequency in l6G group. 2) Blood gas analysis revealed adequate pulmonary ventilation through the constricted airway (about 1/3 of normal sized trachea) during 60 minutes. In the other hand, hypercarbia, hypoxemia, and metabolic acidosis were developed in the group with severe constriction of the upper airway (about 1/4-1/6 of normal sized trachea). 3) The further study is postulated to confirm the the possibility of application of needle trcheostomy in man, but the rabbits were tolerable to the constricted airway with a small sized needle (l6G) into the trachea for 60 minutes.

• The Bulletin of The Korean Astronomical Society
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• v.38 no.1
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• pp.43.2-43.2
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• 2013

The local environmental effects on the triggering of active galactic nucleus(AGN) activity has been studied with many authors, but there still be controversy. We perform statistical analysis for nearby(0.01 < z < 0.05) volume limited(Mr < -19) samples with visual inspection based on Sloan Digital Sky Survey Data Release7. We inspect ~60,000 galaxy images visually to find peculiar objects which show not only ongoing merging features and tidal features, but also post merging features like ring or shell structures. We found that these peculiar features were shown at least 2 times more frequently among AGN host galaxies than non AGN galaxies, and this trend was still visible when galaxy properties such as color or stellar mass are fixed. Furthermore, L[OIII] and L(Ha) of peculiar galaxies are found to be more increased than those of normal galaxies. In order to ensure this results, we also checked it for a smaller subsample with ~2mag deeper monochromatic images provided from SDSS Stripe82 database, and found consistent results. At last, we perform the same work for pair(r_p<80kpc/h, delta_v<200km/s) systems. Because of some pair systems which do not interact gravitationally in actuality but fulfill the criteria for identification of pair system, the trends are found to be slightly weaker. We also found that line luminosities are increased consistently as projected distance between central and companion galaxy decreased, and as companion color gets bluer. Overall, the results of this study tell us that the local environment of galaxies affect the frequency as well as the strength of AGN activity. Local environmental effects, however, may not be the dominant triggering mechanism for AGN activity since the majority of peculiar galaxies are non AGN galaxies.