• 제목/요약/키워드: Controlled respiration

검색결과 109건 처리시간 0.025초

방울토마토의 호흡 및 에틸렌 발생에 미치는 자외선 LED의 효과 (Effect of UV-LED Irradiation on Respiration and Ethylene Production of Cherry Tomatoes)

  • 김남용;이동선;이혁재;안덕순
    • 한국식품저장유통학회지
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    • 제19권1호
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    • pp.47-53
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    • 2012
  • 자외선 LED를 장착한 포장용기시스템을 제작하였으며, 노트북 컴퓨터와 연결하여 작동 제어가 가능하고, 조사 위치에 따라 강도 조절이 가능하도록 하였다. 자외선 LED의 강도는 5 cm에 비해 2 cm에서 3~4배 정도 높았으며, 동일한 조사 위치에서 365 nm에서가 405 nm보다 약 10배정도의 높은 강도를 보였다. 밀폐용기 시스템 내 방울토마토의 호흡은 $20^{\circ}C$에 비해 $10^{\circ}C$에서 호흡 감소 효과가 나타났다. 파장간의 차이는 미미하나 $10^{\circ}C$에서 365 nm가 405 nm에 비해서 작은 차이지만 호흡감소효과가 우수하게 나타났다. $10^{\circ}C$에서 자외선 LED에 의한 호흡감소효과는 5∼10%의 범위에 있었다. 에틸렌 생산에서는 조사 거리 5 cm와 $20^{\circ}C$에서 에틸렌 생산 속도가 분명히 낮아지는 경향이다. 방울토마토에서 자외선LED 조사는 호흡과 용기내 에틸렌 축적을 억제할 수 있는 가능성을 보였으나, 온도조건 및 조사 위치에 따라 그 효과는 달랐다. 자외선 LED 조사에 따른 화학적 물리적 품질변화에는 부정적 영향은 없는 것으로 보였다.

온요법이 여고생의 월경곤란증 경감에 미치는 효과 (The Effect of Thermotherapy on High School Girls' Dysmenorrhea)

  • 강인선;조결자
    • 지역사회간호학회지
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    • 제12권3호
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    • pp.773-784
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    • 2001
  • The study was conducted to test the effectiveness of thermotherapy for high school girls who suffered from disruption in school activities through dysmenorrhea, and to study the extent of its availability in school infirmaries as one of the nursing methods. The test for the study was designed to make a contrast between half of the subjects (20) who did not receive the thermotherapy, and the rest (20) who did during the period from February 15th to April 14th, 2001. Measurements were taken of the subjects who complained of painful menstruation by a set of variables. The variables that were established and complemented by Hur, Mung-heang (1985) consist of 29 items that assess the dysmenorrhea and vitality through the symptoms of primary menstruation visually. Spsswin was used to analyze the data. The Cronbach-${\alpha}$ method was used for statistic confidence, and the test effect of both the subjects and the contrary ones was analyzed by way of T-test. The conclusions are as follow. (1) The hypothesis 1 states that the subjects with themotherapy have a lower degree of dysmenorrhea rather than the contrary ones without it. By the above assessment, there was a quantitative difference between the subjects at 39.40, and the contrary ones at 22.0. After the themotherapy, the degree of dysmenorrhea in the subjects was low indicating that there is a still 5% chance of statistic meaningful difference (t= 2.651. P= .012). As a result, the first hypothesis was accepted. (2) The hypothesis 2 states that the subjects with themotherapy have a different primary menstruation than those without. Data indicate that there was a difference of -5.95 and -4.80. The subjects showed low degrees. Since it was statistically insignificant (t=-1.398, P=.170), the second hypothesis was rejected. (3) The hypothesis 3 states that the subjects with themotherapy have a different vitality. The vitality was measured in three aspects. (1) pulse rate (/min) The hypothesis 3' states that the subjects with themotherapy have the different pulse rate from those without. Data indicate that there was no statistically meaningful difference between the two groups (t=.237, P=. 814). Therefore, the third 1st hypothesis was rejected. (2) Respiration rate The hypothesis 3' states that the subjects with themotherapy have a different respiration rate between pre-thermotherapy and post-thermotherapy. in contrast with the ones without it. The data show that there was no statistically meaningful difference (t=.133. P=.895). A little respiration rate difference was shown between pre-and post-. Likewise. the third 2nd hypothesis was rejected. (3) Blood pressure In the 3rd sub-hypothesis that there would be a difference between experimental and controlled groups was also rejected. because there was no statistically significant difference between the contracting blood pressure and the relaxing blood pressure. In terms of vitality. the pulse rate, respiration rate and blood pressure have no statistical meaning but the first two ones show the decreasing in the rate. In short, though exclusive studies focused on thermo therapy have not been conducted and the comparison can not be made, this study shows not only that the thermotherapy is very effective to dysmenorrhea, but also that it can be available in school infirmaries as one of the nursing methods.

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수온 상승에 따른 게바다말의 광합성 및 호흡률 변화 (Photosynthetic and respiratory responses of the surfgrass, Phyllospadix japonicus, to the rising water temperature)

  • 김혜광;김종협;김승현;;이근섭
    • 환경생물
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    • 제40권3호
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    • pp.352-362
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    • 2022
  • 우리나라 동해와 남해 연안에 주로 분포하는 게바다말의 수온 상승에 따른 탄소수지 변화를 예측하기 위하여 5℃에서 30℃까지의 수온에서 5℃ 간격으로 광합성과 호흡률을 측정하였다. 광합성 매개변수 중 광합성 효율(α)을 제외한 최대광합성률(Pmax)과 보상광도(Ic), 포화광도(Ik)가 수온이 상승함에 따라 증가하였으며, 호흡률(R) 또한 수온 상승에 따라 증가하였다. 가장 높은 수온(30℃)에서 Pmax와 Ik는 급격히 감소하였으나, 반면에 Ic와 호흡률은 지속적으로 증가하였다. Pmax :R ratio는 가장 높은 수온(30℃)에서 최소값을, 가장 낮은 수온(5℃)에서 최대값을 보였다. 이러한 결과를 토대로 게바다말이 양의 탄소수지를 유지하기 위해 필요한 일일 포화광도 시간(Hsat)을 계산한 결과, 5℃에서는 2.50시간 이상, 30℃에서는 10.61시간 이상이 요구되어, 수온이 상승할수록 더 많은 시간의 포화광도(Hsat)가 요구되는 것으로 나타났다. 따라서 수온이 꾸준히 상승되어 여름철 고수온이 장기간 지속되면 우리 연안 게바다말 생육지의 분포에 부정적인 영향을 미칠 것으로 판단되었다.

한약을 이용한 한국에서의 무작위 임상시험 개괄적 검토 (Randomized Clinical Controlled Trials of a Herb Remedies in Korea - Systematic Review)

  • 오래영;설인찬;손창규
    • 대한한의학회지
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    • 제31권4호
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    • pp.1-8
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    • 2010
  • Objective: The study aimed to review all randomized controlled clinical trials (RCTs) performed in Korea with herbal medicine, to produce further useful information for herbal-drug development. Methods: All papers reporting RCT with herbal drugs were collected via public database of Korea Science and Technology Integration Services, and various Oriental medicine journals. Then, the clinical question, herbal medicine, result, RCT design, and its conductor were analyzed. Results: A total of 20 RCTs were finally selected, and most of them were performed after 2003. The main subjects of RCT were related to heart and blood circulation, dermatitis, respiration disorder, Sasang constitution, or psychiatric disorders. Eight RCTs were done with a single herb while 12 RCTs were with multiple herbal formulae. In particular, three RCTs for atopic dermatitis with three formulae showed positive results. The quality of RCT was considered as better than average. Conclusions: This study revealed the current status of RCT using herbal drugs. This result would provide helpful information for research and drug development using traditional herbal medicine.

SiMACS에서의 생체신호 수집 (Biological Signal Measurements in SiMACS)

  • 임지주;최용석;김동환;김은정;이현주;우응제;박승훈
    • 대한의용생체공학회:학술대회논문집
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    • 대한의용생체공학회 1994년도 춘계학술대회
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    • pp.53-56
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    • 1994
  • We have developed biological signal measurement modules and data acquisition and control card for a biological signal measurement, archiving, and communication system (SiMACS). Biological signals included in this system are ECG, EEG, EMG, invasive blood pressure, respiration, and temperature. Parameters of each module can be controlled by PC-base IDPU (intelligent data processing unit) through a data acquisition and control card. The data acquisition and control card can collect up to 16 channels of biological signals with sampling rate of $50\;{\sim}\;2,000Hz$ and 12-bit resolution. All measurement moduls and data acquisition functions are controlled by microcontroller which receives commands from PC. All data transfers among PC, microcontroller, and ADC are done through a shared RAM access by polling method for real rime operation.

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말기 담낭암 환자의 통증조절을 위해 MS Contin 투여중 발생한 호흡억제 -증례 보고- (Respiratory Depression during Oral MS-Contin Administration for Pain Management of Gall Bladder Cancer)

  • 이철우;이병호;이용희
    • The Korean Journal of Pain
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    • 제9권1호
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    • pp.239-243
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    • 1996
  • MS-Contin is an oral controlled-release preparation of morphine sulfate that has been used widely in the management of advanced cancer pain. It prolongs plasma concentration of morphine with no observable accumulation properties following repeated dosing, thereby promoting uninterrupted sleep and hopefully improving patient's quality of life. The common side effects of MS Contin are nausea, vomiting, drowsiness and constipation. But these symptoms are usually mild and respiratory depression is a rare problem. We experienced respiratory depression during oral administration of MS contin for the pain management of advanced gall bladder cancer of 76 years old male patient with metastasis at liver, intestine and cervical lymph node. After we increased the dosage of MS Contin from 160mg to 220mg per day, due to abdominal pain, we observed morphine reaction of MS Contin overdose such as pinpoint pupil, deeply slow respiration below 8/minute, and drowsiness. After intravenous bolus injection of 0.4 mg naloxone followed by continuous administration of 0.2 mg/hr for 4 hours, the patient regained consciousness. The administered route of morphine was changed to intravenous PCA (patient controlled analgesia). There was no aspiration sign as confirmed by chest x-ray. The patient was comfortable and delayed no signs of respiratory depression until now.

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Effect of Storage Conditions of Whole Fruits on Quality of Fresh-cut 'Niitaka' Asian Pears

  • Chung, Hun-Sik;Youn, Kwang-Sup;Moon, Kwang-Deog
    • Food Science and Biotechnology
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    • 제18권6호
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    • pp.1379-1385
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    • 2009
  • Quality changes of the slices processed from 'Niitaka' Asian pears (Pyrus pyrifolia) stored at $0^{\circ}C$ for up to 4 months under controlled atmosphere (CA, 1% $O_2+1%\;CO_2$) and normal air have been investigated for 4 days at $10^{\circ}C$. Respiration rate of the slices was retarded by pre-slicing storage for 4 months in CA. Electrolyte leakage was lower in the slices from pears stored for short-term than long-term and under CA than air. L and a values of the slices from whole pears stored under CA were maintained higher and lower, respectively as compared to the other. Levels of acetaldehyde and ethanol in the slices were increased by CA and long-term storage of whole pears. Content of ascorbic acid and counts of total aerobic microbes in the slices were not affected by storage conditions of whole pears. These results show that storage atmospheres and durations of whole pears affected quality changes of the slices and the conditions of pre-slicing storage should be considered as an important factor for optimizing fresh-cut procedures.

Airway management during general anesthesia in an intellectually disabled patient with undiagnosed tracheomalacia

  • Shin, Sooil;Kim, Seungoh
    • Journal of Dental Anesthesia and Pain Medicine
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    • 제18권2호
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    • pp.119-123
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    • 2018
  • In cases of intellectually disabled patients, there is sometimes difficult to obtain sufficient information due to the intellectual disorder, even though the patient has significant medical problems. Herein, we report a case of decreased oxygen saturation and inadequate air exchange during general anesthesia in an intellectually disabled patient. We also describe the subsequent management, including the diagnosis of tracheomalacia (TM) using bronchoscopy, and the management of airway compromise with manual and/or controlled respiration, which led to the prevention of complications.

환경기체조성하에서 생버섯의 호흡특성 모델링 (Respiration Characteristics Modeling of fresh mushroom lander CA(Controlled Atmosphere))

  • 이현동;윤홍선;이원옥;정훈;조광환
    • 한국농업기계학회:학술대회논문집
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    • 한국농업기계학회 2002년도 동계 학술대회 논문집
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    • pp.343-348
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    • 2002
  • 생버섯의 환경기체조절저장을 위한 적정 기체조성을 예측하기 위하여 팽이버섯과 느타리 버섯을 대상으로 호흡특성치를 측정 및 모델링한 결과 두 버섯의 호흡속도는 환경기체조성에 영향을 받는 것으로 나타났다. 버섯의 산소소비속도와 이산화탄소발생속도를 반응표면분석한 결과 느타리버섯의 이산화탄소발생속도를 제외하고는 $R^2$=0.9이상의 높은 상관관계를 나타내었다. 반응표면 분석결과를 이용하여 두 버섯의 적정 기체조성은 팽이버섯의 경우 1~2.5% $O_2$와 10.5-11.5% $CO_2$, 느타리 버섯의 경우에는 2.5~4.5% $O_2$와 11.5~13%$CO_2$가 적정 기체조성 것으로 예측되었으며 일반적인 생버섯의 저장기체조건에 포함되는 농도였다. 따라서 예측된 조건에서 생버섯의 환경기체조절 저장이 가능 할 것으로 판단되었다.

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