• Transactions of Materials Processing
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• v.5 no.3
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• pp.239-255
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• 1996

A new forming technology has been developed to fabricate near-net shape products using light metal. A semi-solid forming technology has some advantages compared with the conventional forming processes such as die casting squeeze casting and hot/cold forging. In this study the numerical analysis of semi-solid filling for a straight die shape and orifice die shape in gate pattern is studied on semi-solid materials(SSM) of solid fraction fs =30% in A356 aluminum alloy. The finite difference program of Navier-Stokes equation coupled with heat transfer and solidification has been developed to predict a filling pattern and the temperature distribution of SSM. The programdeveloped in this study gives die filling patterns of SSM and final solidifica-tion region.

• Korean Journal of Oriental Medicine
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• v.11 no.1
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• pp.109-118
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• 2005

In a field of oriental medicine, it is necessary to collect systemically clinical data and integrate. Input data items was decided, then categorized by the modules through discussion of the institute and hospitals. Items are information of patient, history, aspects of occurrence, pattern identification, prescriptions of herbal medicine, the results of biochemical serum examination, blood cell count, urine analysis, CT, MRI, Chest PA, EKG etc. Factors in oriental medicine are Sasang constitution, Stroke-Pattern-Identification(china), differentiation of cold and heat syndrome. This tool was constructed by using Microsoft-Access 2000 and Microsoft Visual Basic 6.0. Furthermore this web-based system could be applied to multi-center clinical investigation.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.8 no.3
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• pp.338-350
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• 1996

A numerical analysis is carried out to study the two-dimensional steady state natural convection from vertical wires immersed in cold pure water. The surface of the wire is $0^{\circ}C$ unifrom temperature. Results of the analysis are presented for free stream temperature from $0^{\circ}C$ to $25^{\circ}C$ and the aspect ratio N from $5.26{\times}10^{-3}$ to $1.0{\times}10^{-3}$. The effects of the density extremum and aspect ratio on the flow pattern and the heat transfer characteristics are discussed As the aspect ratio N becomes larger, in the range of $1.0^{\circ}C{\leq}T_{\infty}{\leq}4.4^{\circ}C$ and $6{^{\circ}C}{\leq}T_{\infty}{\leq}17^{\circ}C$, the effect of Pr number on the heat transfer is shown to be more significant than the aspect ratio. Investigating into the effect of the density extremum on the heat transfer from wires, the new heat transfer correlations are suggested with the relation of average Nu mumber vs. modified Ra number. Here, the coefficient values C of correlations are presented as the function of density extremum parameter $R^*$. The effects of the density extremum parameter are also discussed.

• Journal of Sasang Constitutional Medicine
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• v.30 no.3
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• pp.62-73
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• 2018

Objectives The aim of this study was to make an analysis of clinical characteristics and status of Sasang constitutional medicine of patients with Parkinson's Disease who visited a Korean medicine hospital. Methods We studied 129 patients with Parkinson's Disease who visited a Korean medicine hospital from September 1, 2012 to June 30, 2018. We retrospectively collected medical history and characteristics of subjects using data of EMR (electronic medical record). Results The proportion of female was higher than male. The average age was 60s. The patients visited a hospital more than one year after the occurrence of symptoms. And they were mostly under western medicine treatment. Among the 129 patients, 56 persons(43.4%) were Taeeumin, 45 persons(34.9%) Soyangin and 28 persons Soeumin(21.7%). In the distribution of prescription according Sasang Constitutional Medicine symptomatology, there was no significant difference in the proportion of exterior cold disease(48.9%) and interior heat disease(51.1%) in Soyangin. Meanwhile the proportion of heat disease's prescription was higher than cold disease in Taeeumin(73.2%) and Soeumin(84.1%). The majority of disease were Dry-febrile symptom(73.2%) of heat disease in Taeeumin, Yang depletion-syndrome(64.3%) of heat disease in Soeumin, and Gyolhyung-symptom(33.3%) of exterior cold disease and Wasting thirst-syndrome(22.2%) of interior heat disease in Soyangin, Conclusions By Developing of guideline for treatment of Parkinson's Disease through analyzing on clinical characteristics and distribution of Sasang Constitutional Medicine symptomatology could contribute to the improvement of the cure rate and accuracy of constitution pattern.

• Journal of Physiology & Pathology in Korean Medicine
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• v.28 no.6
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• pp.668-673
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• 2014

Cold and Heat pattern identification(CHPI) in traditional East Asian medicine(TEAM) is one of the major indicator to distinguish characteristics of disease and to determine treatment method. Basic parameters to determine CHPI include the pulse rate, respiration rate, and pulse power. Studies to associate physiological responses of human body by cold stress(CS) with CHPI in TEAM were rarely done so far. This study aims to explore the effects of cold stress on pulse signal via a feasibility study for three subjects and investigate some indices which can reflect autonomic nerve reaction(ANR). We measured radial pulse signals and respiration signal of the investigated subjects before the CS, during the CS which continues for 5 minutes, and immediately after the CS, respectively. Finally, we analyzed the pulse rate (P), respiration rate (R), pulse power, pulse depth, and pulse rate per respiration (P/R ratio). As a result, the P/R ratio showed a consistently decreasing tendency through the CS stimulation process, while other parameters behaved more complex and in subject-specific ways. It implies that, among candidate parameters, the P/R ratio is a simple but the most probable parameter that can be used as the ANR indicator. This result is also consistent with the theory in TEAM scripts, in which the P/R ratio is predicted to be a direct indicator for the CHPI. This pilot study shows that P/R ratio can be more appropriately associated with the ANR than heart rate or respiration rate alone. Extensive studies will be necessary to verify or confirm the P/R ratio as an appropriate and well defined parameter for ANR.

• Journal of Physiology & Pathology in Korean Medicine
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• v.23 no.5
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• pp.958-963
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• 2009

I Alcoholic hepatitis is a serious liver disease that may lead to cirrhosis and carcinoma, and the short-term mortality rate is fairly high in severe patients. This study was conducted to develop the instrument of pattern identification for alcoholic hepatitis. We made the pattern identification questionnaire and symptoms indicator through reviewing traditional oriental medical literatures and got advices from the advisor committee with Delphi technique. The advisor committee on this study was organized by 10 professors of internal medicine of oriental medical colleges nationwide. The questionnaire was composed of questions about 6 pattern identification - dampness, heat, liver, spleen, cold and dryness. We gave importance to each symptoms of 6 pattern identification which had been scored on a 5-point scale. We surveyed two groups: 36 male alcoholic hepatitis patients whose Alcohol Use Disorder Identification Test(AUDIT) scores were over 12 and who drank alcohol over 40 g per day were allocated to the hepatitis group. Forty three men who did not drink alcohol were allocated to the normal group. Alcoholic hepatitis had relativities to dampness, heat among cause of disease and liver, spleen among viscera. There were statistical significances between the hepatitis group and the normal group in dampness, heat, liver questionnaire. As a result of this study we suggest that the questionnaire would be effective instruments of pattern identification for alcoholic hepatitis.

• Journal of Physiology & Pathology in Korean Medicine
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• v.30 no.4
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• pp.274-278
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• 2016

In order to analyze the pathomechanisms of dysmenorrhea and efficiency of DSOM(diagnosis system of oriental medicine), clinical test was performed for 541 childbearing women having menstrual pain in P metropolitan city. The experimental group was composed of subjects who experience discomfort in daily life or interpersonal activities caused by menstrual pain with scores of 4 or above on the measurement of menstrual pain (MMP). The control group was composed of subjects reporting little or no discomfort with scores of 3 or below on the MMP. The menstrual period measurements were taken within 2-3 days following the first day of menstruation, when menstrual pain is at its peak. While non-menstrual period measurement were within 7-10 days after the last day of menstruation. The dampness pathomechanism was yielded most frequently in both groups, and then heart、heat、blood deficiency、cold、qi deficiency、phlegm、qi congestion、blood stasis in order. And the significant differences were in the pathomechanisms of blood deficiency、blood stasis、qi congestion、five viscera、phlegm and cold between the two groups. This means that general pathomechanisms of childbearing women in twenties mainly are dampness and heat, especially the experimental group has mostly disharmony of six qi and/but then move to insufficiency and stagnation of qi and blood and then to visceral disease pattern having statistically significant difference. Moreover in the two times of investigation, the output of pathomechanisms in each group has similar pattern in the same group. Therefore it can be concluded that the results of pathomechanisms by DSOM were in accordance with existing pattern classifications of dysmenorrhea in general and the DSOM showed reproducibility and stability in the data processing of questionnaires.

• Transactions of Materials Processing
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• v.21 no.1
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• pp.67-74
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• 2012

Although high productivity is possible, cold forged helical gears have not been widely used due to difficulty in achieving mechanical properties as well as dimensional accuracy of the product. Confidence in the gear characteristics also is very important in heavy-duty gear applications. Therefore, the properties of forged gears must be compared to the properties of conventional machined gears. The properties might be different due to the different fabrication processes. In this study, machined and forged products both before and after heat-treated have been compared by measuring the residual stress and involute curve of the tooth. Characteristics of hardness and microstructure were also compared. Additionally, tooth fracture strength was compared for the heat-treated products. Moreover, the tooth strength and the fracture pattern were compared between the machined and forged gears. The forged gear showed decreased changes in residual stress and decreased changes in dimensions when compared to the machined gear before and after heat treatment. The forged gear was over 10% better than the machined gear in tooth strength.

• Journal of the Korean Society of Food Culture
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• v.36 no.5
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• pp.484-491
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• 2021

This study investigated the effect of dry heat treatment (DHT) on the physicochemical properties of hard type (HR) and floury type (FR) rice to improve the processing aptitude of rice flour. The rice flour was heated at 130℃ for 0, 2 and 4 hours, and the color value, water absorption index (WAI), water soluble index (WSI), swelling power, solubility, pasting properties, particle shape and the X-ray diffraction were measured. After DHT, the L value of rice flour decreased, and the b value increased. The WAI, WSI, swelling power and solubility of HR and FR increased with the increase of treatment time. The cold viscosity and setback increased, while breakdown decreased. Cracks and lumps formed with fine particles were observed. The X-ray diffraction pattern was A-type, while the diffraction intensity decreased. According to the results of the two-way analysis of variance (ANOVA) test, the hydration and pasting properties were significantly different between HR and FR and were affected by DHT time. The results suggest that the properties of modified rice flour by DHT can be used in the food industry.

• The Journal of Internal Korean Medicine
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• v.37 no.6
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• pp.961-977
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• 2016

Objectives: This study was designed to analyze the treatment effects of Eunhwayeongyo-tang through retrospective chart reviews. We also checked the correlation between each pair of variables of the symptoms and curative rates of patients with cough. Methods: Thirty-three patients with cough who had satisfied the selection criteria were retrospectively reviewed through their basic medical records, nasal endoscopy, and questionnaires about cough on their first and second visits. The questionnaires used were "The questionnaire on clinical symptoms of cough & sputum", Leicester Cough Questionnaire Korean Version (LCQ-K), Total Nasal Symptom Scores (TNSS), Visual Analog Scale (VAS), and "Cold-heat patterns". The improvement rate, calculated by "The questionnaire on clinical symptoms of cough & sputum" was considered to be clinically effective if reduction of symptoms scored more than 30%. The state of nasopharyngeal mucosa was assessed to categorize the cold-heat patterns of the upper respiratory tract and for diagnosis. Results: According to this study, cough and sputum improved by $57.22{\pm}37.76%$. Most patients (76%) improved significantly after $12.18{\pm}6.59days$ of taking Eunhwayeongyo-tang. The cure rates of 26 patients among the 33 patients were judged as effective. All the mean scores of the questionnaires and the anterior nasal cavity states were significantly improved on the patients' second visits. After $18.39{\pm}15.68days$, 30 patients were completely cured and ended treatment. The nasopharyngeal mucosa states of all patients were categorized as heat patterns. Conclusions: The conditions of the patients with nasopharyngitis significantly improved after taking Eunhwayeongyo-tang. All of the patients had pharyngitis or rhinitis. The cold-heat pattern of nasopharyngeal mucosa was a significant indicator of upper respiratory inflammation diagnosis.