• 동의신경정신과학회지
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• 제33권2호
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• pp.215-225
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• 2022

Objectives: The purpose of this study was to report the effect of Korean medicine (KM) treatment on a patient diagnosed with cluster headache. Methods: The patient included in this study was diagnosed with cluster headache who received KM therapy (herbal medicine, acupuncture, moxibustion, cupping, and chu-na treatment). The main symptom of the patient was pain in the left occipital region and orbital region. It was diagnosed as a pattern of liver depression and spleen deficiency by oriental medicine. During the hospitalization period, treatment effect was evaluated by NRS. HIT-6. BDI, and STAI were additionally performed to assess depression and anxiety. Results: After 24 days of treatment, the intensity of headache decreased from NRS7 to NRS3. During follow-up at two weeks, there was no pain. Normal daily activities were possible. Conclusions: Korean medical approach might be useful for pain relief and restoration of daily living ability for patients with cluster headache.

• 한국식생활문화학회지
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• 제25권3호
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• pp.334-341
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• 2010

The objective of this study was to examine the quality characteristics and antioxidant activity of yogurt containing hot water extract from maca. Four different levels (0, 4, 8, 12%) of maca extract were added to milk followed by fermentation with lactic acid bacteria at $37^{\circ}C$ for 12 hrs, and then the physicochemical properties of the samples were investigated. During 7 days of storage at $4{\pm}1^{\circ}C$, the acid production (pH and titratable acidity) of the yogurt increased with the addition of maca extract. The Hunter L value (lightness) decreased, while the b value (yellowness) increased as the maca extract level in the yogurt increased. Viable cell counts were not significantly different among the samples. The results of consumer acceptance tests showed that no significant differences in overall acceptability were observed between the yogurts containing 4% and 8% of maca extract and a control yogurt. The yogurt containing maca extract exhibited higher DPPH radical and superoxide anion radical scavenging activities than the control yogurt over the storage period.

• 접착 및 계면
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• 제24권4호
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• pp.131-135
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• 2023

레시틴은 양친매성 분자로 유기용매상에서 구형의 역 마이셀로 자가조립된다. 이러한 레시틴 용액에 담즙염, 물 등과 같은 첨가제가 들어갈 경우 레시틴의 분자 형태의 구조 변화를 유도하여 역 실린더형 마이셀로의 변환을 이끈다. 이번 연구에서는, 데케인 상에서 레시틴/담즙염 혼합물에 물을 첨가한 후, 유동계를 활용하여 혼합물의 유변학적 변화를 관찰한다. 이렇게 제조된 혼합물들은 점도가 높고 점탄성의 특징을 나타내어 약물전달, 식품젤 등의 다양한 분야에 활용이 가능할 것으로 기대된다.

• 한국토양비료학회지
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• 제15권2호
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• pp.117-127
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• 1982

시용질소(施用窒素)의 형태(形態)가 뽕잎생산량(生産量), 질소(窒素)의 회수량(回收量) 엽중(葉中)의 각종(各種) 이온의 엽위별(葉位別) 분포(分布) 및 균형(均衡), 경시적(経時的)인 변동(変動)에 미치는 영향을 알고져 유안(硫安), 요소(尿素), $NH_4NO_3$($NO_3:NH_4$=1:1), $NaNO_3+NH_4NO_3$($NO_3:NH_4$=2:1). $NaNO_3$등 5개처리를 하여 폿트시험(試験)으로 수행(遂行)하였는 바 그 결과(結果)는 다음과 같다. 1. 유안구(硫安区)를 대조(対照)로 한 수엽량지수(收葉量指数)는 요소구(尿素区)와 1:1구(区)에서 75, 2:1구(区)에서 69, $NaNO_3$구(区)에서 67로 $NO_3$시용비율(施用比率)이 높을수록 낮았다. 2. 유안구(硫安区)를 대조(対照)로 한 질소(窒素)의 회수량지수(回收量指数)는 요소구(尿素区)에서 88, 1:1구(区)에서 78, 2:1구(区)에서 74, $NaNO_3$구(区)에서 59이었다. 3. 생육초기(生育初期)에 뽕잎중의 양(陽)이온함량(含量)은 Na$H_2PO_4$함량(含量)이 전생육기간(全生育期間)을 통(通)해 타(他) 음(陰)이온보다 높았으며, 초기(初期)에는 $SO_4<NO_3<Cl$ 이었으나 후기(後期)에는 $NO_3$와 Cl는 감소(減少)하고 $SO_4$는 증가(増加)하여 $NO_3<Cl<SO_4$의 순서로 높았다. 4. 엽위별(葉位別)로 K, $H_2PO_4$, $SO_4$, $NO_3$, 전질소(全窒素), ${\sum}A$ 등은 상위엽(上位葉)에, Ca, Mg, Cl, ${\sum}C$, (C-A)등을 하위엽(下位葉)에 높았다. 5. $NO_3$의 흡수(吸收)가 줄게되자 Cl가 K을 동반(同伴)이온으로 하여 흡수가 증가(増加)되었으며, Ca은 K의 흡수증가에 의해 흡수(吸收)가 감소(減少)되었다. 6. 뽕잎중의 ${\sum}C$는 1,100~1,200, ${\sum}A$는 300~350, (C-A)는 700~900me/kgDM사이에 분포하였으며, (C-A)는 엽위별(葉位別), 경시적(経時的)으로 변동(変動)을 보였다.

• 대한본초학회지
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• 제29권6호
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• pp.55-62
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• 2014

Objectives : The objective of this study is to determine the best numbers of steaming-drying cycles of Gastrodiae Rhizoma for both efficacy and taste. We investigated various characteristics among Gastrodiae Rhizoma samples (GSD1, GSD3, GSD5 and GSD7) through the number of steaming-drying cycles increased. Methods : Gastrodiae Rhizoma were steamed and dried at different repeated numbers. They were divided into samples (GSD1; steamed and dried once, GSD3; steamed and dried three times, GSD5; steamed and dried five times, GSD7; steamed and dried seven times) for experiment. They were extracted using water, freeze dried and powdered to analyze proximate composition, free sugar amount, functional components, antioxidant activity and sensory evaluation. Results : Proximate composition and the amount of free sugars of Gastrodiae Rhizoma did not have meaningful differences among samples. Phenolic and flavonoid content of samples were increased by increasing steaming-drying numbers. Gastrodin content had different values and GSD7 was the highest in comparison with others. Increasing steaming-drying numbers led to a increasing in radical and nitrate scavenging activity in samples. Regarding to sensory evaluation, GSD5 was selected as the best sample according to its highest hedonic score mean (5.54/7) among all samples for appearance, color, taste and overall acceptability. Conclusions : The results indicated that 5th-cycling sample was effective in views of functional components, antioxidant activity and sensory characteristics. Moreover, it was suggested that steaming-drying process improved remarkably the effects of Gastrodiae Rhizoma.

• Bulletin of the Korean Chemical Society
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• 제34권7호
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• pp.2081-2085
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• 2013

A quantitative method for determining levels of three bioactive compounds based on pattern recognition was developed and fully validated for the quality control of Alismatis Rhizoma (AR) by HPLC. Separation conditions were optimised using an Optimapak $C_{18}$ column ($250mm{\times}4.6mm$, 5 ${\mu}m$) with a mobile phase of acetonitrile and 0.1% aqueous phosphoric acid and detection wavelengths of 205 and 245 nm. Method validation yielded acceptable linearity ($r^2$ > 0.9998) and percent recovery (98.06%-101.71%). Limits of detection ranged from 0.08 to 0.15 ${\mu}g/mL$. Levels of the three bioactive compounds, alisol C acetate, alisol B, and alisol B acetate, in AR were 0.07-0.45, 0.38-10.32, and 1.13-8.59 mg/g dried weight, respectively. Pattern analyses based on these three compounds were able to differentiate Chinese and Korean samples accurately. The results demonstrate that alisol B and its acetate may be used as marker compounds for AR quality and can be regulated to no less than 0.36 and 1.29 mg/g of dried sample, respectively. The method described here is suitable for quantitative analyses and quality control of multiple components in AR.

• 한국BIM학회 논문집
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• 제7권3호
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• pp.1-10
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• 2017

3D concrete printing technology builds structural components layer-by-layer with concrete extruded through a nozzle without using forms. This technology can simplify construction processes by optimizing design flexibility, construction time, and cost. Furthermore, the 3D printing technology is easy to make an irregularly shaped and function embedded building(or object) which is difficult to be constructed by conventional construction method. However, the 3D printing concrete is not suitable for current commercial standard and the material itself. It is also difficult to apply it to the construction site due to the lack of initial strength and the nozzle which is clogged during the process. The research of mix proportion design process for 3D printing concrete which differs from the conventional concrete is necessary in order to solve the problems. This paper aims to calculate the 3D printing concrete mix proportion design process based on the mix materials and performance information derived from the previous researches. Therefore, the usage variation range, mutual influence relationship, and the importance priority of the mix proportion are analyzed. Based on this results, the basic design process of 3D printing concrete which contains planning design phase, basic design phase and validating performance phase is suggested. We anticipate to confirm applicability verification about the actual production by referring to this 3D printing concrete mix proportion study. In the future, this study can be utilized for blueprint of the 3D printing concrete mix proportion.

• Journal of Acupuncture Research
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• 제19권3호
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• pp.230-239
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• 2002

Kyphotic cervical curvature, straghtening is commonly caused by trauma, muscle spasm without trauma and wrong posture, etc. Objective : This study is performed to evaluate the clinical effect of neck pain associated with Kyphotic cervical curvatre on cervical x-ray lateral view. Methods : One of the many causes, We examined the patients with neck pain & upper back pain who visited to Department of Acupuncture & Moxibustion, Gumi Oriental Hospital of Kyung-San University from 16th June 1999 to 22th June 2000. Pre and post treatment, We evaluated the cervical angle, Jochumsen's method, VAS(visual analogue scale) and effective score of treatment. Results & Conclusion : 1. Kyphotic cervical curvature is mainly caused by wrong posture during long term, sudden trauma, etc. therfore, postcervical muscles and tendon are injuryed by strong stress. So, muscle imbalance and pain is occured. 2. On these cases, The improvement index for pre/post treatment showed 28/42, 10/15, 9/30, 28/42 degree in cervical angle. Jochumsen's method showed -1/+2, -9/-3, -5/-2, -1/+2mm. Afer treatment VAS is 2, 1, 1, 1 and effective score of treatment is above good. The results suggest that treatments of Oriental Medicine(Acupuncture & Moxibustion, Chu-Na, Cupping and Physical therapy) are effective methods for neck pain with kyphotic cervical curvature on cervical x-ray lateral view.

• Korean Chemical Engineering Research
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• 제52권6호
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• pp.695-700
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• 2014

고분자전해질 연료전지로 물을 전기분해하여 수소와 산소를 발생시킬 수 있다. 그러나 1.7V 이상의 높은 전압에서 수전해 반응이 일어나므로 전극과 고분자 전해질 막의 열화가 빠르게 진행된다. 수전해 과정에서 anode의 열화를 방지하기 위해 촉매로 지지체 없는 $IrO_2$를 보통 사용하는데 본 연구에서는 고분자전해질 연료전지용 Pt/C 촉매를 수전해 반응에 그대로 사용했을 때 전극과 막의 열화 현상을 분석하였다. 1.8~2.0 V 전압 범위에서 수전해 반응 후 고분자 전해질 연료전지 구동 조건에서 I-V, CV, 임피던스, LSV를 측정했다. 수전해 전압이 높을수록 전극과 막의 열화 속도가 증가하였다. 2.0 V에서 1분 동안 수전해 반응했을 때 수소 수율은 88%였고, 전극과 고분자 막이 열화되어 0.6 V에서 성능이 49% 감소하였다.

• 한국수산과학회지
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• 제46권6호
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• pp.793-800
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• 2013

This study was conducted to determine the physiological and histological characteristics of starry flounder Platichthys stellatus juveniles to undergo a short/long starvation period and subsequent re-feeding with 2 weeks interval for 65 days. All findings from this study indicate the possibility of a very rapid recovery possibility of starry flounder after short starvation period for 2 or 4 weeks. The mean body weight after 2 and 4 weeks starvation were not significantly different after 65 days. However, the body weight of 6 and 8 weeks starved fishes showed significantly low value than 2 weeks starved fishes. All biomarkers, liver somatic index, RNA/DNA ratio and blood chemistry, in this study showed fast recovery possibility after re-feeding of starry flounder. During the starvation and recovery process, they showed distinct increasing and decreasing tendency. From 21-28 days after re-feeding, most biomarkers reached to their maximum value and thereafter decreased again in 2, 4 and 6 weeks starvation and re-feeding groups. It could be interpreted as a compensatory growth and strategical action against starvation.