• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 1998년도 Proceedings of UNESCO-internetwork Cooperative Regional Seminar and Workshop on Bioassay Guided Isolation of Bioactive Substances from Natural Products and Microbial Products
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• pp.82-87
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• 1998

Brine shrimp lethality test has become one of our routine tools in selecting plant materials for further chemical or bioactivity studies in our laboratory. Usually, once a potentially bioactive sample has been identified, it will then be subjected to more elaborate bioassay procedures. Out of more than 200 plant samples tested we found eight samples to be toxic towards brine shrimp larvae.

• Annals of Clinical Neurophysiology
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• 제1권2호
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• pp.154-159
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• 1999

Magnetoencephalography (MEG), the measurement of magnetic fields produced by neuronal current associated with normal and pathologic brain activities, is a totally noninvasive method for localizing functional regions of the brain. During the past several years, many clinical research centers are working to expand various fundamental functional brain regions, which can be easily localized, as well as to characterize magnetic abnormalities which accompany a wide variety of cerebral disease. At present, MEG is used in a number of clinical centers throughout the world for the presurgical functional localization of eloquent cortex, and for the non-invasive localization of epileptiform activity. And also, non-invasiveness means that it can be used for screening and repetitive follow-up measurement without concern for adverse effects. As procedures for activating various functional brain regions are standardized, and as the effects of specific cerebral diseases on the MEG are carefully documented in controlled studies, the number of routine neurological applications for MEG will increase significantly. In this paper, the basic principles of MEG are reviewed briefly with its clinical application to neurologic disease.

• Journal of Acupuncture Research
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• 제35권4호
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• pp.176-181
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• 2018

Background: Low electrical impedance at acupoints is a familiar concept, and it has also been found that this increases with poor organ function. Kovich hypothesizes that organ states are communicated to their related acupoints in real time, and this experiment set out to test this. Methods: The electrical impedance at 4 digestion-related acupuncture points (acupoints) was recorded over a 14-hour period and a food diary was recorded. The readings were taken in 23 sessions, between which the participant continued his usual daily routine. Results: The impedance at all the monitored acupoints varied considerably throughout the day, and the peaks were aligned with periods of high stomach activity. Conclusion: Variations in stomach function produced corresponding variations in the impedance at key stomach-related acupoints. However, the experiment was limited in that samples were only taken at around 30-minute intervals, and further investigations are needed to explore this phenomenon in more detail.

• 가족자원경영과 정책
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• 제10권4호
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• pp.109-124
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• 2006

The purpose of this ethnography is to describe and analyse the Korean full-time housewives' everyday domestic cares. For this purpose. The 11 full-time housewives in their thirties and forties from the middle class were interviewed with an unstructured questionnaire. The findings are as follows: The full-time housewives interpret their domestic cares as including housework, financial management and consumption behavior. They have heavy responsibility to fulfil the routine housework, squeeze their financial resources and balance their family consumption and their own consumption. So, their every day lift has its own uniqueness different from their counter partners'- husband's and employed married woman's. But even among full-time housewives, there are many differences in all these three activities of domestic cares.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제22권6호
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• pp.576-580
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• 2019

Meconium peritonitis as a cause of non-immune hydrops in neonates is rarely reported. Here we report such a rare occurrence. In our case, a routine antenatal scan at 25 weeks revealed isolated ascites. By 31 weeks of gestation, all features of hydrops were observed in scans. However, antenatal workup for immune and non-immune hydrops was negative. Subsequently, a preterm hydropic female baby was delivered at 32 weeks. She required intubation and ventilator support. An X-ray revealed calcification in the abdomen suggestive of meconium peritonitis. Ultrasound showed gross ascites, a giant cyst compressing the inferior vena cava, and minimal bilateral pleural effusion. Emergency laparotomy revealed meconium pellets and perforation of the ileum. Double-barrel ileostomy was performed, and the edema resolved and activity improved. The baby was discharged after 3 weeks. Ileostomy closure was done at follow-up. The baby is growing well.

• Korean Journal of Radiology
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• 제23권1호
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• pp.30-41
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• 2022

Objective: Computed tomography enterography (CTE) and magnetic resonance enterography (MRE) are considered substitutes for each other for evaluating Crohn's disease (CD). However, the adequacy of mixing them for routine periodic follow-up for CD has not been established. This study aimed to compare MRE alone with the mixed use of CTE and MRE for the periodic follow-up of small bowel inflammation in patients with CD. Materials and Methods: We retrospectively compared two non-randomized groups, each comprising 96 patients with CD. One group underwent CTE and MRE (MRE followed by CTE or vice versa) for the follow-up of CD (interval, 13-27 months [median, 22 months]), and the other group underwent MRE alone (interval, 15-26 months [median, 21 months]). However, these two groups were similar in clinical characteristics. Three independent readers from three different institutions determined whether inflammation had decreased, remained unchanged, or increased within the entire small bowel and the terminal ileum based on sequential enterography of the patients after appropriate blinding. We compared the two groups for inter-reader agreement and accuracy (terminal ileum only) using endoscopy as the reference standard for enterographic interpretation. Results: The inter-reader agreement was greater in the MRE alone group for the entire small bowel (intraclass correlation coefficient [ICC]: 0.683 vs. 0.473; p = 0.005) and the terminal ileum (ICC: 0.656 vs. 0.490; p = 0.030). The interpretation accuracy was higher in the MRE alone group without statistical significance (70.9%-74.5% vs. 57.9%-64.9% in individual readers; adjusted odds ratio = 3.21; p = 0.077). Conclusion: The mixed use of CTE and MRE was inferior to MRE alone in terms of inter-reader reliability and could probably be less accurate than MRE alone for routine monitoring of small bowel inflammation in patients with CD. Therefore, the consistent use of MRE is favored for this purpose.

• 한국토양비료학회지
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• 제43권6호
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• pp.837-843
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• 2010

토양광물 종류별 토양의 점토활성도를 구분하기 위하여 우리나라 390개 토양통을 점토광물과 함수산화광물을 기준으로 점토광물 조성이 다른 7개의 토양을 선정하여 토양광물 종류에 따른 점토의 CEC와 비표면적을 비교하였다. 토양 CEC에 대한 점토의 비가 0.7 이상인 토양은 사암을 모재로 Chlorite를 주광물로 하는 토양, 안산암질반암을 모재로 Smectite를 함유한 토양, 화산재를 모재로 Allophane과 Ferrihydrite가 주광물로 이루어진 토양이었으며, 점토활성도 0.3-0.7인 토양은 회장석을 모재로 Kaolin이 주광물 토양, 하성퇴적토를 모재로 Kaolin, Illite, Vermiculite가 혼합된 토양이었다. 또한 점토활성도 0.3이하인 토양은 화강암 및 화강편마암 모재의 Kaolin을 주광물로 Geothite와 Hematite가 함유된 적황색계 토양, 석회암 모재의 Illite와 Vermiculite를 주광물로 Gibbsite, Geothite, Hematite가 함유된 적황색계 토양이었다. 토양의 점토활성도는 점토의 CEC, 점토의 비표면적과 상관이 있어서 점토활성도가 높은 토양에서는 점토의 CEC가 높고 점토의 비표면적이 넓었다. 따라서 토양의 점토활성도는 기존의 점토광물의 정성과 정량분석을 실시하지 않고도 토양의 일반적인 분석을 통하여 토양 중 점토광물의 조성을 추정하고 토양의 물리-화학적 특성을 예측하는데 유용한 기준이 될 것으로 생각된다.

• Journal of Oral Medicine and Pain
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• 제36권2호
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• pp.123-130
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• 2011

이갈이나 이악물기 등과 같은 비정상적인 구강기능장애의 주된 임상 소견으로 흔히 관찰되는 설 함요가 긴장성 두통의 통증양상에 어떠한 영향을 미치는가를 관찰하고자 국제두통학회의 진단기준에 부합되는 긴장성 두통이 있는 환자 중 설함요가 있는 65명을 실험군으로 하고, 설 함요가 없는 환자 65명을 대조군으로 하여 통증의 질과 강도, 양측성 유무 그리고 일상생활에서의 증감 유무 등을 관찰하고 통계 처리하여 다음과 같은 결과를 얻었다. 1. 긴장성 두통환자의 통증의 질은 설 함요의 유무에 따라서 통계학적인 차이가 있었다(p=0.049). 2. 긴장성 두통환자의 통증의 강도는 설 함요의 유무에 따라서 통계학적인 차이가 있었다(p=0.010). 3. 긴장성 두통환자의 통증의 양측성 유무는 설 함요의 유무에 따라서 통계학적인 차이가 없었다. 4. 긴장성 두통환자의 통증의 일상생활에서의 증감 유무는 설 함요의 유무에 따라서 통계학적인 차이가 없었다. 이상의 결과로 설 함요가 있는 긴장성 두통 환자는 설 함요가 없는 긴장성 두통 환자에 비해서 통증의 예통과 심도통이 더 심하기 때문에 임상적으로 진료에 임 할 때 고려해야 하며, 이에 따른 추가적이고 지속적인 연구가 필요하리라고 생각된다.

• Journal of Oral Medicine and Pain
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• 제35권3호
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• pp.203-212
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• 2010

이갈이나 이악물기 등과 같은 비정상적인 구강기능장애의 주된 임상 소견으로 흔히 관찰되는 구강 협점막 백선이 긴장성두통의 통증양상에 어떠한 영향을 미치는가를 관찰하고자 국제두통학회의 진단기준에 부합되는 긴장성 두통이 있는 환자중 구강 협점막 백선이 있는 79명을 실험군으로 하고, 구강 협점막 백선이 없는 환자 79명을 대조군으로 하여 통증의 질과 강도, 양측성 유무 그리고 일상생활에서의 증감 유무 등을 관찰하고 통계 처리하여 다음과 같은 결과를 얻었다. 1. 긴장성 두통환자의 통증의 질은 구강 협점막 백선의 유무에 따라서 통계학적인 차이가 없었다. 2. 긴장성 두통환자의 통증의 강도는 구강 협점막 백선의 유무에 따라서 통계학적인 차이가 있었다(p= .043). 3. 긴장성 두통환자의 통증의 양측성 유무는 구강 협점막 백선의 유무에 따라서 통계학적인 차이가 없었다. 4. 긴장성 두통환자의 통증의 일상생활에서의 증감 유무는 구강 협점막 백선의 유무에 따라서 통계학적인 차이가 없었다. 이상의 결과로 구강 협점막 백선이 있는 긴장성 두통 환자는 구강 협점막 백선이 없는 긴장성 두통 환자에 비해서 통증의 강도가 더 심하기 때문에 임상적으로 진료에 임 할 때 고려해야 하며, 이에 따른 추가적이고 지속적인 연구가 필요하리라고 생각된다.

• Physical Therapy Rehabilitation Science
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• 제4권1호
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• pp.28-31
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• 2015

Objective: Psychomotor imagery has been widely used to improve motor performance and motor learning. Recent research suggests that during visualization, changes occur in neurophysiological networks that make physical practice more effective in configuring functional networks for skillful behaviors. The aim of our pilot study was to determine if there was change and to what extent there was differentiation in modulation in electroencephalography (EEG) frequencies between visualizing a state of rest and a state of exercise performance and to identify the preponderant frequency. Design: Quasi-experimental design uncontrolled before and after study. Methods: EEG brain wave activity was recorded from 0-40 Hz from nine cerebral cortical scalp regions F3, Fz, F4, C3, Cz, C4, P3, POz, and P4 with a wireless telemetric EEG system. The subjects, while sitting on a chair with eyes closed, were asked to visualize themselves in a state of routine rest/relaxation and after a period of time in a state of their routine exercise performance. Results: The gamma frequency, 31-40 Hz, (${\gamma}$) was the predominant wave band in differentiation between visualizing a state of rest versus visualizing a state of exercise performance. Conclusions: We suggest these preliminarily findings show the EEG electrocortical activity for athletes is differentially modulated during visualization of exercise performance in comparison to rest with a predominant ${\gamma}$ wave band frequency observed during the state of exercise. Further controlled experimental studies will be performed to elaborate these observations and delineate the significance to optimization of psychomotor exercise performance.