• Journal of Chest Surgery
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• v.32 no.2
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• pp.194-197
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• 1999

We experienced an extremely rare case of lipoid pneumonia combined with empyema. A 53-year-old patient was admitted because of chilling sensation and blood tinged sputum. Simple X-ray and computered tomography(CT) showed a huge homogeneous opacification in the left lower lung field. This patient was diagnosed as endogenous type lipoid pneumonia by a computed tomography guided needle biopsy; decortication and left lower lobectomy are performed. We diagnosed it as endogenous type lipoid pneumonia because it revealed a foreign body reaction and lipid laden macrophage on the pathologic examination.

• Journal of the Korean Institute of Telematics and Electronics
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• v.23 no.3
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• pp.389-396
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• 1986

A pulsed ultrasonic doppler flowmeter for mesurements of velocity profils in man is described. The device projects a beam of ultrasound in burst of 570 ns duration at 3.5 MHz. The back-scattered signals are processed to produce a signal oxrresponding to the mean velocity over a small region of the flowing stream. The observation range of 112mm is divided into 128 depth channels. The size of this sample volume determines the flowmeter sensitivity and accuracy. The device uses a quadrature detector to detect the direction of the moving target(hemoglobin). The main feature of the novel instrumnet is its simple hardware structure due to sequential signal processing.

• Journal of Mechanical Science and Technology
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• v.15 no.12
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• pp.1853-1859
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• 2001

An experimental study is presented for a flow field in a two dimensional wavy channels by PIV. This flow has two major applications such as a blood flow simulation and the enhancement of heat transfer in a heat exchanger. While the numerical flow visualization results have been limited to the fully developed cases, existing experimental results of this flow were simple qualitative ones by smoke or dye streak test. Therefore, the main purpose of this study is to produce quantitative flow data for fully developed and developing flow regimes by the Correlation Based Correction PIV (CBC PIV) and to conjecture the analogy between flow characteristics and heat transfer enhancement with low pumping power. Another purpose of this paper is to examine the onset position of the transition and the global mixing, which results in transfer enhancement. PIV results on the Fully developed and developing flow in a wavy channel at Re=500, 1000 and 2000 are obtained. for the case Reynolds Number equals 500, the PIV results are compared with the finite difference numerical solution.

• Journal of the Institute of Electronics and Information Engineers
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• v.54 no.5
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• pp.138-142
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• 2017

Photoplethysmography (PPG) is a simple and low-cost optical technique that can be used to detect blood volume changes in the microvascular bed of tissue. It is often used non-invasively to make measurements at the skin surface. In this paper, we described the implementation heart rate monitoring system using PPG sensor. Proposed system is collected data using PPG sensor and heart rate was detected using second derivative method. In order to verify the effectiveness of the proposed method, we performed the measurements of RR-intervals with a commercial medical device.

• Korean Journal of Pharmacognosy
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• v.38 no.1
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• pp.37-44
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• 2007

Yeon Ju Hwan (蓮珠丸) is a Chinese patent medicine which has been used for improvement of blood circulation and thrombolysis in Korea. It consists of 28 kinds of powdered crude drugs. For the identification of individual ingredients in such powdery mixtures, microscopic method may advantageously be used, as it requires only small amount of specimens. And also it is considered a technique of choice since it takes only minimum time and requires a simple process. In this paper, the effectiveness of this method is exemplified by the identification of the ingredients in Yeon Ju Hwan, which contains 28 powdered crude drug ingredients.

• Journal of Chest Surgery
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• v.34 no.1
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• pp.108-110
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• 2001

심장박동하 관상동맥우회로이식술은 이미 보편화되어 널리 시행되고 있는 술식이다, 현재 관심사는 최소한의 혈액역학적 장애를 주며 심장을 최대한 고정시키는 것이다. 이에 저자들은 좌전하행지를 시야의 정중선으로 옮기는 간단하고 안전한 방법을 소개하고자 한다. 50 cc 주사기에 연결된 채혈주머니를 좌심실밑에 넣은후 공기를 주입하면 심장이 우측으로 돌면서 심장의 측면이 시야의 중앙에 위치하게 된다. 공기를 주입하는 양에 따라 수술부위를 원하는 곳에 위치하게 쉽게 조절할 수 있고, 문합이 끝나면 단순히 공기를 빼어 허탈시킨후 꺼내면 된다.

• International Journal of Contents
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• v.6 no.3
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• pp.83-88
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• 2010

Aerobic exercise affects cerebral circulation, action of neurotransmitters, glucose, oxygen, and energetic substances and influence on the central nervous system for cognition. This study suggests that both the intensity of exercise and the level of cognitive task need to be considered. Computerized neurobehavioral testing is a more effective method, compared to conventional methods, of neuropsychological testing when measuring cognition objectively, in cases that we found. The intensity of 80% max HR had effect on more complex tasks such as 3 Digit Addition and Digit Span Backward, and the intensity of 65% max HR had an effect on more simple tasks such as Color Word Vigilance and Digit Span Forward. We can assume that different intensity of aerobic exercise might involve specific areas of the brain as they could have different sensitivities, so further studies measuring regional cerebral blood flow or electroencephalogram are needed to confirm the results.

• The korean journal of orthodontics
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• v.28 no.6 s.71
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• pp.975-979
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• 1998

Our Goal of modified segmental osteotomy on maxilla accompanied by mandibular anterior subapical osteotomy was to get the best results from patients of bi-alveolar or bi-maxillary protrusion. In this study, cephalometric and photo (en face, profile) analysis have been compared to define the soft tissue change after surgery. Lip protrusion was efficiently reduced and nasolabial angle was much obtused. Although nose was a little widened, it was quite acceptable. Blood circulation on osteotomized segment was well maintained. This relatively simple methods could be successfully applied to many patients.

• Journal of the Korean Society for Precision Engineering
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• v.27 no.2
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• pp.29-33
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• 2010

We have investigated fs-laser ablation as well as optoperforation threshold of PDMS (Polydimethylsiloxane) thin lid cover on ${\mu}$-channel with changing the flow medium from water to hemoglobin. The ablation threshold is found to be independent of both PDMS thin film thickness and flow medium, but the optoperforation threshold is dependent on the films thickness. The observation that the ablation process is well described with simple two-temperature model supposed that the cover lid PDMS of $\mu$-channel be processed with minimized thermal effects by fs-laser with low laser fluence.

• Journal of the Korean Society of Clothing and Textiles
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• v.3 no.1
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• pp.19-24
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• 1979

1. In the late second century A.D. the dalmatic, which originated in Orient, came into fashion in the Roman world. 2. It was first introduced as a vestment in public worship by Pope Sylvester I (314-335A.D.) who ordered it to be worn by the deacons. 3. The dalmatic was cut like a tunic, but wider, and with wide short sleeves. It was worn without belt, and was characteristically decorated by the clavus. Its shape, which is the form of a cross, refer to the passion of Christ. It symbolizes joy, salvation and justice. 4. In early christian epoch, colors was found in the Bible. 5. Clavus running from the shoulders to the hem in front and back represented as 'The servant of God', and symbolized the Blood of Christ. With time, clavi change from simple stripes to decorative ones.