• The Journal of the Korea Contents Association
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• v.17 no.10
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• pp.567-575
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• 2017

In this study, when diagnosis pancreatic cancer by dual time point PET/CT, we propose SUVm 2.52 as the threshold value for performing the dual time point PET/CT exam. The hypothesis of normal distribution was adopted through data conversion of 60 pancreatic diseases. The proposed SUVm2.52 boundary value showed a significance level that could be applied to both 120 and 180 minutes of delay time scan for pancreatic cancer determination (p<0.05). C-value variation shows that delay time 2 hour test is more useful than delay time 3 hour test. When the SUVm 2.52 is set to the boundary value and the double-time point PET/CT exam is performed, the probability of distinguishing cancer from inflammation in the delayed image is 95%. When the delayed test is performed with the proposed boundary value SUVm 2.52, Compared with general PET / CT scans, it is thought that it may be helpful to distinguish pancreatic cancer.

• Korean Journal of Food Science and Technology
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• v.31 no.5
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• pp.1216-1220
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• 1999

The effects of low-temperature blanching on the physical properties of chestnut powder were studied. Chestnuts were blanched in water for 15, 30 and 60 min., each at three temperatures viz. $45^{\circ}C,\;55^{\circ}C$ and $65^{\circ}C$. The particle size of chestnut powder was prepared smaller than 60 mesh$(250\;{\mu}m)$. Higher blanching time and temperature increased water binding capacity(WBC) of chestnut powder. Water soluble index(WSI) was the highest for chestnuts blanched at $65^{\circ}C$ for 30 min. As with water binding capacity(WBC), swelling power of chestnut powder increased with increasing blanching time and temperature but solubility showed an reduction by increasing blanching temperature. In Brabender amylographic examination, peak viscosity of chestnut powder showed great change, but the gelatinization temperature showed no significant differences by blanching conditions.

• Korean Journal of Medicinal Crop Science
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• v.14 no.1
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• pp.45-48
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• 2006

Alcohol dehydrogenase (ADH) and Aldehyde dehydroganase (ALDH) activities of turnip extracts with ultrasonification at $60,\;100^{\circ}C$ temperature were investigated. Ultrasonification extracts showed a increase as compared with the normal extracts. ALDH activities were high than ADH activities. So, turnip extracts was shown efficient plants in alcohol oxidation. Appraisers liked powder extracts better than liquid extracts in sensory score.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2005.10a
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• pp.190-192
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• 2005

본 연구는 돈육 후지 부위를 이용하여 건조조건을 달리하여 제조한 돈육 육포의 이화학적, 미생물학적 특성 및 관능적 특성을 조사하여 더 좋은 품질의 육포 제조방법을 확립하기 위하여 실시되었다. 전체적으로 역계단식으로 제조하는 방법이 수분함량, 건조수율, 연도 및 관능적 측면에서 좋은 평가를 받았으며, 재수화를 통한 복원력도 우수하였다. 반면에 일반적으로 시중에서 유통되는 육포의 제조법은 위생적인 측면에서 효과는 있었으나 그 차이는 미미하였고, 오히려 제품의 품질 면에서 낮은 평가를 받았기 때문에 역계단식($72^{\circ}C$(90분)${\to}$$65^{\circ}C$(60분)${\to}$$55^{\circ}C$(60분))으로 제조하는 방법이 우수한 품질의 육포를 생산할 수 있을 것으로 사료되며, 더 많은 연구가 진행되어야겠다.

• Korean Journal of Environmental Agriculture
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• v.23 no.3
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• pp.133-137
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• 2004

Recently, saw dust manure has been widely used in horticultural crop production in Korea. Animal manure is produced by decaying of livestock manure mixed with saw dust, and contained higher nutrients and ion concentration than the traditional manure made from rice straw and grasses. Therefore, a continuous application of the animal manure disregarding to soil characteristics may be ruined the soil conditions. This study was conducted to investigate the transportation of the nitrogen, phosphate, potassium, and ion concentration of the animal manure applied to volcanic and non-volcanic soils in Jeju islana Soil chemical analysis were done before and 180 days after animal manure application. After animal manure application, $NO_3$-N moved up to 90cm in volcanic soil, while the movement was limited to 60 cm in non-volcanic soil. Phosphate concentration was high up to 30 cm, where crop roots are mainly distributed, in volcanic soil, however, the phosphate moved up to 60 cm in volcanic soil. Exchangeable potassium moved up to 90 cm in volcanic soil, but the movement wns limited up to 60 cm in non-volcanic soil. For both soil types, no significant different in ion concentrations was observed up to 60 cm in soil depth, though the concentrations were higher in volcanic ash soils as compared to the non-volcanic ash soils.

• Journal of The Korean Society of Grassland and Forage Science
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• v.24 no.1
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• pp.21-24
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• 2004

To determine lethal temperature of alfalfa (Medicago sativa L. cv Vernal) at heat-stressed conditions, seedlings grown in a small pots for 4 weeks were subjected to different temperature regimes of heat treatment. No apparent demage was observed when the plants were treated at 45, 50 or $60^{\circ}C$ for 1 h. Heat treatments at 60 and $65^{\circ}C$ for 1 h, several plants were withered and showed damage symptom on their leaves. When the plants were exposed to $70^{\circ}C$ for 1 h, most of leaves were severely withered, but it was not lethal conditions for the whole plants. By contrast, most of plants were died within one day after heat treatment at $80^{\circ}C$ for 1h. Furthermore, plants exposed to $80^{\circ}C$ for 50 min were also died within 7 days. It was found that new shoots were regenerated from the plants that had been treated at $80^{\circ}C$ within 45 min. These results indicate that heat treatment at $80^{\circ}C$ for 50 min is an optimum condition to distinguish the lethality of alfalfa plants. Simple viability assay system established in this study will be useful fer selection and characterization of heat-tolerant transgenic alfalfa plants.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.2
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• pp.267-274
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• 2019

To investigate the effect of high-intensity interval training (HIIT) on the outcomes of cardiac rehabilitation(CR) in elderly and younger patients with myocardial infarction(MI). Of the MI patients who received hospital-based CR from 2015 to 2017, we retrospectively reviewed the medical records of the patients who continued follow-up through the outpatient clinic. A total of 39 patients (20 elderly patients (${\geq}60year$($64.1{\pm}3.6$)) and 19 younger patients (< 60 year($55.6{\pm}2.3$)) was included in this study. The HIIT program was composed of 10 minutes of warm-up, 30 minutes of interval aerobic exercise, and 10 minutes of cool down. The aerobic exercise based on their initial exercise tolerance test outcome consisted of 3-minute usual intensity phase (60-70% of heart rate/VO2 reserve) and 4-minute of high-intensity phase (70-90% of heart rate/VO2 reserve). Exercise capacity was measured by exercise tests before and after hospital- based CR. Before CR, elderly group had a significantly lower exercise capacity in Exercise time, peak VO2, METs, Anaerobic threshold, VEmax, 02pulse than younger group. Both group showed similar improvement of cardiopulmonary exercise capacity after CR. And HIIT is safe and effective in elderly patients. It is considered necessary to further expansion for the participation of high intensity interval training in elderly patients.

• Korean Journal of Food Science and Technology
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• v.27 no.1
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• pp.86-91
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• 1995

In order to expand the utility of alginic acid in the food industry, we have investigated to prepare low viscous alginic acid using a method for degradation of alginic acid with the enzyme system of Vibrio sp. AL-145. The enzyme showed maximum activity at pH 8.0 and $37^{\circ}C$, and was stable in the pH range 7.5 to 8.5 and at temperature up to $30^{\circ}C$, and 0.5M NaCl needed for the enzyme activity. The viscosity of alginic acid decreased with the reaction time courses regardless of alginic acid and enzyme concentration, and 90% of viscosity decreased with 60 min of reaction time, but the changes of reducing sugar not exhibited. The soluble concentration of partially degradated alginic acid(PDA) in water was about 10%(w/v), and adsorption capacity of $Ca^{2+}$ ion increased with increasing the concentration of PDA. The alcohol concentration on precipitation of PDA was higher than Na-alginic acid.

• Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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• 2003.10a
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• pp.180.2-181
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• 2003

벼는 미립내부의 온도 및 함수율의 차이에 의해 열응력 및 수분차에 의한 응력이 발생하게 되며, 응력이 과대하게 발생되면 낟알이 금이 가는 동할이 발생하게 된다. 동할은 주로 건조과정 또는 건조후에 주로 발생하게 되는데 벼의 품질에 가장 중요한 지표로서 동할이 발생되면 저장성이 저하되며, 도정시 싸라기가 증가하여 도정수율에도 많은 손실을 가져오게 된다. 본 연구는 함수율 20.01, 21.80 및 22.80%(w.b.) 3수준에 대하여 40.4, 50.0 및 60.9$^{\circ}C$ 3수준의 건조온도와 노출시간 5 ~ 120분 동안에 벼의 동할에 미치는 영향을 구명하고, 동할 예측모델을 개발하는데 목적이 있다. 초기 함수율이 낮고 건조온도가 높을수록 노출시간이 경과할수록 동할은 증가하는 것으로 나타났다. 건조온도 40.4$^{\circ}C$에서는 노출 100분전까지는 동할율이 2%이상 발생하지 않는 것으로 나타났으며, 건조온도 50.$0^{\circ}C$와 60.9$^{\circ}C$에서는 함수율 20.0%(w.b.)의 경우 27분 및 11분 노출했을 때 동할율이 2%이상 발생하였다. 동할 실험치를 실험모델에 적합시켜 다중회귀분석 프로그램을 이용하여 실험상수를 결정하였다. 실험모델의 결정계수는 모든 온도에서 0.9이상으로 높게 나타났으며, RMSE는 40.4$^{\circ}C$에서는 0.2230, 50.$0^{\circ}C$에서는 2.4975로 나타났다. 또한, 60.9$^{\circ}C$에서는 77813로 이는 동할 실험치가 0 ~ 100 사이의 값임을 고려할 때 허용 가능한 수준으로 판단된다.

• Journal of Mushroom
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• v.12 no.3
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• pp.220-225
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• 2014

This study was conducted to set the proper sterilization standards of casing soil for the stable production of button mushroom(Agaricus bisporus) from mushroom disease that occurs in infection of casing soil material. Changes of aerobic bacteria are increased as the longer grow-out period and sharply increased after second flushes. Fluorescence Psuedomonas showed high density at high sterilization temperature and $100^{\circ}C$ treatment has extremely high density at 30 min and 60 min in casing 22 days. Density of thermophilic actinomyces is sharply increase from casing with soil and the highest density at 22 days of casing and rapidly decrease after first flushes. Sterilizing temperature of casing soil affects quality and quantity of button mushroom. Treatment of 60 min, 90 min at $80^{\circ}C$ and 30 min at $100^{\circ}C$ produced the highest mushroom yields, especially mushrooms yields of A grads were the highest at treatment of 90 min at $80^{\circ}C$. Treatment of 60min at $100^{\circ}C$ products many yields, however, this treatment has low economic feasibility for its yields. Sterilizing temperature of casing soil has an effect on generating diseases and insect pests. Treatment of 60 min, 90 min at $80^{\circ}C$ and 30 min $100^{\circ}C$ showed lower incidence than the other treatment. Although treatment of 30 min at $100^{\circ}C$ causes low diseases and mushroom fly damage, it has low mushroom yields. Furthermore, although treatment of 60 min at $100^{\circ}C$ has high mushroom yields, it causes high diseases and mushroom fly damage. Therefore the best conditions for the sterilization of casing soils was 60 min and 90 min at $80^{\circ}C$.