• KOREAN POULTRY JOURNAL
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• v.11 no.9 s.119
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• pp.101-106
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• 1979

부화장에서 병아리를 사료공장에서 사료를 그리고 질병은 항생물질이 사양은 내가 한다고 생각하는 것이 상식화되어 있다. 환절기에 들면서 또 한차례 호흡기병의 홍역을 치루어야 할 우리 양계장에 과연 이렇게 항생물질을 중요한 위치(?)에 두고 함부로 남용해도 좋은것인지 무척 부담스럽다. 왜냐하면 외국에서는 항생물질의 사용을 법으로 철저히 규제하고 있으며 사용자들도 수의사의 처방에 의하여 사용한다는 사실과 너무나 거리가 먼 현실때문이다. 그러면 항생물질은 어떤 것이며 투여효과와 그 다음에 잔존하는 내성문제는 어떠한 것인지 총괄하여 기술해 보기로 한다.

• KOREAN POULTRY JOURNAL
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• v.38 no.1 s.435
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• pp.120-123
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• 2006

최근 때 아닌 한파가 몰아닥치면서 양계농가들이 사양관리에 어려움을 겪고 있다. 금년 9월 부터 HPAI에 대한 파문이 계속되면서 육계가격이 kg당 600원까지 하락하는 등 고전을 면치못했고, 그나마 12월 들면서 가격이 상승하고 있으나 생산성이 낮아 수익을 올리기에는 결코 쉽지 않은 상황이다. 겨울에는 최소 환기로 계사 내 온도를 유지시켜야 하는 만큼 사양관리에 각별히 신경 쓰지 않으면 안된다. 농가로서는 연료가격이 큰 부담이 되고 있으며, 아직도 단열에 취약한 농장들이 많기 때문에 효율적인 환경관리를 하지 않으면 농가의 피해는 크게 나타날 수 있다.

• Phonetics and Speech Sciences
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• v.12 no.1
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• pp.19-31
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• 2020

The purpose of this study is to observe the realization of pause and breath groups from adult speakers and to examine how gender, generation, and tasks can affect this realization. For this purpose, we analyzed forty-eight male or female speakers. Their generation was divided into two groups: young, old. Task and gender affected both the realization of pause and breath groups. The length of the pause groups was longer in the read speech than in the spontaneous speech and female speech. On the other hand, the length of the breath group was longer in the spontaneous speech and the male speech. In the spontaneous speech, which requires planning, the speaker produced shorter length of pause group. The short sentence length of the reading material influenced the reason for which the length of the breath group was shorter in the reading speech. Gender difference resulted from difference in pause patterns between genders. In the case of the breath groups, the male speaker produced longer duration of pause than the female speaker did, which may be due to difference in lung capacity between genders. On the other hand, generation did not affect either the pause groups or the breath groups. The generation factor only influenced the number of syllables and the eojeols, which can be interpreted as the result of the difference in speech rate between generations.

• Journal of Environmental Science International
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• v.4 no.4
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• pp.357-365
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• 1995

The use of chlorinated water in swimming pools produces elevated chloroform levels in the water and air of the pools which can cause chloroform body burden of swimming individuals. Present study confirmed the chloroform body burdens from a 40-min swimming and evaluated the decay of chloroform breath concentration after the cessation of a 60-min swimming. Air and water concentrations were measured in the pools. The water and air chloroform concentrations ranged from 18.1 to 25.3 ${mu}g/l$ and from 30.9 to 60.7 ${\mu}g/m3$ for the confirmation study, respectively. The breath level after 40-min swimming was about 64 to 266 folds higher than the corresponding background breath. The breath concentration after the 40-min swimming ranged from 10.5 to 21.3 ${\mu}g/m3$, while that prior to the corresponding swimming ranged from 0.07 to 0.19 ${\mu}g/m3$. In addition, the post-exposure breath level varied with the subjects who swam in the pool on the same visiting day. Breath concentration increased gradually during 60-min swimming, then decreased rapidly within 5 minutes after the cessation of exposure, after that, decreased slowly, and finally approached to a background breath level at 1-2 hr after exposure.

• 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.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.559-564
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• 2006

최근에 들어서 생체신호분석을 통하여 여러 가지 사용자 상태를 파악하려는 연구가 많이 진행되고 있다. 대표적인 것이 GSR(전기피부반응, galvanic skin response), BVP(blood volume pressure), 호흡 등의 생체신호가 사람의 흥분 정도, 정신적 부담, 감정변화에 따라 달라지는 특성을 활용하는 것이다. 본 연구에서는 디지털 TV, 혹은 IPTV 의 컨텐츠를 감상하는 환경 하에서 시청자의 생체신호의 변화 패턴을 분석하여, 그 분석 결과로부터 TV 프로그램이나 디지털 컨텐츠에 대해 시청자가 느끼는 만족도, 집중도, 흥미 여부 등을 추론하고자 하였다. 즉, 주어진 컨텐츠를 감상하는 동안 시청자로부터 얻어낸 생체신호를 분석한 시청 정보 데이터가 프로그램에 대한 선호도와 관련을 가질 수 있는지 검증한 기초 연구 결과를 제시한다. 또한 이 결과를 통해 프로그램에 대한 시청자의 반응을 객관적으로 측정하고 실시간으로 반영할 수 있도록 하는 TV 프로그램 추천 시스템의 구현 가능성을 검증한다.

• Fire Science and Engineering
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• v.26 no.5
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• pp.8-12
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• 2012

The aim of study intends to investigate physical response of human body wearing Self Contained Breathing Apparatus and to provide the base data for the safety of firefighter. The results of the study are as follows. when wearing SCBA, the mean skin temperature (7 %), heart rate (28 %), rate of perceived exertion (65.4 %), metabolic equivalents (70.7 %) were significantly higher (p<.05), respiratory rate was not statistically significant. It is concluded that wearing SCBA causes significant stress to the physical systems.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2011.11a
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• pp.171-174
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• 2011

본 연구는 소방공무원이 착용하는 소방용 공기호흡기(SCBA)가 신체에 미치는 영향을 분석하여 소방공무원의 안전을 위한 기초자료 제공을 목적으로 한다. 연구결과 소방용 공기호흡기를 착용한 경우가 반바지를 착장한 경우보다 평균피부온도(7%), 심박수(28%), 운동자각도(65.4%), 대사당량(70.7%) 등이 통계적으로 유의하게 높게 나타났으며(p<.05), 호흡수는 유의하지 않았다. 이상의 결과 소방용 공기호흡기의 착용은 신체에 과중한 부담을 미치는 것으로 사료된다.

• Monthly Duck's Village
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• s.202
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• pp.24-31
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• 2020

불포화지방산이 풍부한 오리고기는 예로부터 보양식으로 많은 사랑을 받았다. 오리고기가 기력을 회복하는 음식으로 널리 알려진 이유는 필수 아미노산과 레시틴이라는 성분이 풍부하기 때문이다. 아미노산은 근력 향상에 도움을 주고 신체 능력을 강화하며 피로 해소에도 탁월한 역할을 한다고 알려지며, 레시틴이 부족할 경우 피로를 느끼고 면역력이 저하되기 때문에 꾸준하게 섭취를 해주는 것이 중요하다. 오리에 풍부한 비타민A는 체내 병균 저항력을 높여준다. 또한 면역 세포의 기능을 촉진해 감염 질환이 걸리지 않게 몸을 보호하는 역할을 한다. 특히 비타민A가 부족하면 호흡기계 질환이 걸리기 쉬우므로 호흡기 건강에 신경을 쓴다면 평소 비타민A가 풍부한 음식을 먹는 게 좋다. 또한 오리고기에 풍부한 리놀레산은 성장기에 꼭 필요한 필수 지방산으로 인체 기능에 꼭 필요한 요소다. 다른 육류에 비해 열량이 낮고 단백질이 풍부해 다이어트를 할 때도 부담없이 즐길 수 있는 오리고기 신제품을 소개한다.

• Sleep Medicine and Psychophysiology
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• v.9 no.1
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• pp.34-40
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• 2002

Objectives: The gold standard for diagnosing obstructive sleep apnea syndrome (OSAS) is nocturnal polysomnography (NPSG). This is rather expensive and somewhat inconvenient, however, and consequently simpler and cheaper alternatives to NPSG have been proposed. Oximetry is appealing because of its widespread availability and ease of application. In this study, we have evaluated whether oximetry alone can be used to diagnose or screen OSAS. The diagnostic performance of an analysis algorithm using arterial oxygen saturation ($SaO_2$) base on 'dip index', mean of $SaO_2$, and CT90 (the percentage of time spent at $SaO_2$<90%) was compared with that of NPSG. Methods: Fifty-six patients referred for NPSG to the Division of Sleep Studies at Seoul National University Hospital, were randomly selected. For each patient, NPSG with oximetry was carried out. We obtained three variables from the oximetry data such as the dip index most linearly correlated with respiratory disturbance index (RDI) from NPSG, mean $SaO_2$, and CT90 with diagnosis from NPSG. In each case, sensitivity, specificity and positive and negative predictive values of oximetry data were calculated. Results: Thirty-nine patients out of fifty-six patients were diagnosed as OSAS with NPSG. Mean RDI was 17.5, mean $SaO_2$ was 94.9%, and mean CT90 was 5.1%. The dip index [4%-4sec] was most linearly correlated with RDI (r=0.861). With dip index [4%-4sec]${\geq}2$ as diagnostic criteria, we obtained sensitivity of 0.95, specificity of 0.71, positive predictive value of 0.88, and negative predictive value of 0.86. Using mean $SaO_2{\leq}97%$, we obtained sensitivity of 0.95, specificity of 0.41, positive predictive value of 0.79, and negative predictive value of 0.78. Using $CT90{\geq}5%$, we obtained sensitivity of 0.28, specificity of 1.00, positive predictive value of 1.00, and negative predictive value of 0.38. Conclusions: The dip index [4%-4sec] and mean $SaO_2{\leq}97%$ obtained from nocturnal oximetry data are helpful in diagnosis of OSAS. CT90${\leq}$5% can be also used in excluding OSAS.