• Annals of Clinical Neurophysiology
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• 제11권1호
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• pp.1-8
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• 2009

Orthostatic intolerance is defined as the development of various symptoms during standing that are relieved by recumbency. Postural tachycardia syndrome (POTS) is another nomenclature of orthostatic intolerance. POTS characterized by a heart rate increase ${\geq}30$ bpm from supine to standing or >120 bpm at standing without orthostatic hypotension. POTS is a heterogenous in presentation with various pathophysiologic mechanisms. Important mechanisms are hypovolemia, denervation, hyperadrenergic and deconditioning state. There are presented as lightheadness or dizziness, palpitations, presyncope, sense of weakness, tremulousness, shortness of breath. POTS are classified under 3 groups that are neuropathic, hyperadrenergic, and deconditioning POTS. Most patients can be improved from a pathophysiologically based regimen of management.

• 대한방사선기술학회지:방사선기술과학
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• 제22권1호
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• pp.35-42
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• 1999

This study was undertaken to take the correct vocal technique(especially about the resonance of oral cavity). The resonance of oral and pharyngeal cavity is the principle which can vocalize well without any abnormal signs in the throat. Therefore it is important for us to understand how to use the correct resonance of oral and pharyngeal cavity. Shimadzu X-ray remote control TV system and Shimadzu magnet $nex-{\alpha}$ (SMT-50CX/H) were used for checking the movements of T-M joint and diaphragmatic respiration. The results obtained were summerized as follows: 1. While opening T-M joint space like the vowel "A" [a], We should vocalize five fundamental vowel [a,e,i,o,u] with diaphragmatic respiration holded. 2. Diminuendo must be expressed by increasing a breath volume while descending a mandible gradually because we can not ascend maxilla. So we can make a delicate expression. 3. The resonance of oral cavity must be scattered by elevating the soft palatine lightly with relax of throat.

• 전기학회논문지
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• 제57권1호
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• pp.142-147
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• 2008

Abdominal circumference changes due to breathing by the respiratory muscle activity such as diaphragm, which would partially represent the lung volume variation. The present study introduced conductive rubber molded in a cord shape incorporated with a patient's pants. The conductive rubber cord operated as a displacement transducer to measure the lung or abdominal volume changes. Signal extraction circuitry was developed to obtain the volume and its derivative(or the flow) signals followed by wireless transmission based on the Zigbee communication protocol in a size of $65mm{\times}105mm$ easily put in pocket. Breathing frequency was accurately evaluated and breath pattern analysis seemed feasible, since respiratory behaviours such as maximal inspiration and cough were well identified. Remote wireless receiver module also enabled to monitor both volume and flow signals during resting breathing on a PC terminal.

• 센서학회지
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• 제23권5호
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• pp.299-304
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• 2014

Optimizing the performance of a composite sensor array is necessary when the number of sensors to choose from is large. In this paper, we present a chemical sensors array optimization method using Wilks Lamda algorithm applicable a device to detect low concentration of alcohol from driver's exhale breath for interlocking engine ignition preventing drink-driving. More than 20 chemical sensors fabricated different synthetic stuffs and heater temperatures by collaborators were nominated, 5 sensors were selected for optimal sensors array using the method, and alcohol samples were well discriminated from the interference gases inside the vehicle. It has been confirmed by Principal Component Analysis (PCA).

• Journal of Chest Surgery
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• 제46권1호
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• pp.76-79
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• 2013

Venous aneurysms are uncommon in the lower limb and are more frequently found in the neck and thoracic and visceral veins. However, they have been reported to cause thrombosis, pulmonary thromboembolism, and other related complications. Popliteal venous aneurysms are often undetected because they are usually asymptomatic, but they may cause pulmonary thromboembolic events. We experienced a case of a 44-year-old man who was referred for recurrent pulmonary thromboembolism. He showed no other symptoms or signs except shortness of breath. A popliteal venous aneurysm was diagnosed incidentally because the examinations were performed to detect a deep vein thrombosis in relationship to the patient's history of pulmonary thromboembolism. We report a case of surgical treatment for a popliteal venous aneurysm that was complicated by pulmonary thromboembolism.

• 대한전기학회논문지:시스템및제어부문D
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• 제53권4호
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• pp.300-308
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• 2004

Nowadays, many people have a lot of time on chair in their life. If the sitting posture is not correct, there is some trouble with the waist. And if the sitting posture goes on long time at a slant, it sometimes causes the hurts of waist or the deformded spinal column. A crouched posture is an obstacle to breath and it give rise to drowsiness because of the lack of oxygen. The sitting posture is a habit so that people can't feel it oneself and look over some kind of risks. The evaluation of the sitting posture is analyzed by measuring EMG of spinal both side of spinal-bones. In this paper, we can evaluate a right the sitting posture by analyzing the increase of the tention of muscle in one or the other side of muscles when the posture inclines one side and describes the usefulness of the signal of EMG to evaluate the influence of the sitting posture on waist.

• 사상체질의학회지
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• 제14권1호
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• pp.112-117
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• 2002

An Athma is a hypersensitive reaction of bronchus on various stimulus. It has a cough and laboring breath caused by narrowing of inflammatory bronchus. In this study, the three asthma patients classified by Sasang constitutional medicine had a notable medical effects. So we report the healing process and results of these three patients in this study.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2000년도 추계학술발표대회 및 bio-venture fair
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• pp.264-265
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• 2000

Helicobacter pylori(H. pylori) is the causative agent of chronic gastritis and the single most important factor in peptic ulcer disease, however, the pathogenetic mechanisms underlying H, pylori infection are not well understood. Futhermore, there is a strong association between H. pylori infection and gastric cancer. Various diagnostic methods for detecting H. pylori infection are available. These can be divided into invasive methods, requiring endoscopy, and non-invasive tests, mainly 13C-urea breath tests and serologic detection of antibodies. Rapid urease test is the most recommendable endoscopic test for the diagnosis of H. pylori infection, presently. CLO test kit is the represent of rapid urease test kits. The principles of CLO test kit is that hydrolysis of urea by urease Is detected by a dye indicators showing a color change. Our device is used same principle but we improved the reaction time is more faster and positive color change is more distinctive from the color of the negative specimen. So, this kit is more reliable because it response faster and accuracy.

• 말소리와 음성과학
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• 제5권4호
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• pp.3-15
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• 2013

The acoustic analysis of diadochokinesis(DDK) has been used to evaluate dysarthria. However, there has not been an automatic method to evaluate dysarthria. The aim of this study was to introduce a new automated program to measure DDK tasks and to apply this to clinical patients with idiopathic Parkinson's disease(IPD). Fourty-seven patients with IPD and a healthy control group of twenty participants were selected with every DDK task recorded three times. Twenty-five acoustic parameters in the program were developed. The relevant parameters were times of DDK, pitch related parameters, intensity parameters which were analyzed by 2-way ANOVA. Significant differences between the groups were found in the times of DDK, pitch related parameters, and intensity parameters. The findings indicated that the pitch of control group was more stable than that of the IPD. Even though the patients with IPD had a higher intensity value, this phenomenon was caused by the weakness of the IPD group who could not control their speech with a breath.

• 한국멀티미디어학회논문지
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• 제6권6호
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• pp.991-999
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• 2003

본 논문에서는 호흡에 의하여 변화하는 기도 내부 영역의 형태학적인 정보를 반영할 수 있는 EBCT를 이용한 영상 획득 기법과 이 기법을 이용하여 획득한 단층 영상으로부터 기도 내벽의 윤곽선을 자동적으로 검출하는 방법을 제안하였다. 기도의 각 준위에 대한 영상데이터들을 적용한 컴퓨터 시뮬레이션 결과들을 통하여 제안한 방법이 효과적으로 기도의 윤곽선을 검출함을 확인하였으며 시간적 변화에 따른 기도 내벽의 단면적인 변화를 볼 수 있었다. 따라서, 제안한 방법이 임상에서의 정량적 평가에 활용할 수 있을 것으로 판단된다.