• Journal of Sensor Science and Technology
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• v.17 no.5
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• pp.338-345
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• 2008

Steel bearing balls are important component in machines having moving parts. In this paper we describe a vision-based automatic inspection system designed for sensing defects on the surface of steel bearing balls. The system has a camera looking down over a rail on which balls roll. Two mirrors are installed at both sides of the rail so that the side parts of a ball can be well inspected. The entire ball surface can be sufficiently seen by taking three images at $120^{\circ}$ rotation interval. Defects are detected by thresholding the difference image between an image captured and the reference image of a good ball.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.05a
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• pp.40-43
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• 2022

Covid-19의 영향으로 직접적인 만남이 줄어들고 온라인 커뮤니티의 사용량이 급격하게 증가하였다. 에브리타임은 대부분의 대학생이 사용하고 있는 가장 보편적인 온라인 커뮤니티이다. 이러한 서비스와 비슷한 방식으로 운영되어 이질감을 느끼지 않으면서도, 직장인의 특성을 고려한 설계로 취업 후에도 지속적으로 사용할 수 있는 커뮤니티 서비스를 제안한다. 이에 본 논문에서는 협업기능을 강화한 직장인을 위한 온라인 커뮤니티이자 익명서비스로 프라이버시를 보호할 수 있는 모바일앱을 설계했다.

• The Journal of the Society of Stroke on Korean Medicine
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• v.6 no.1
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• pp.55-62
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• 2005

Dysphagia is an important complication for the rehabilitative treatment and life quality of stroke patients. This report is about two patients with dysphagia after stroke who were treated with Pyungwesan and Bowhawhan. The severity of the patient's dysphagia was evaluated with stage of dysphagia according to severity. After treatment, dysphagia were remarkably improved(from stage 5 to 2, 5 to 1). This result shows that Pyungwesan and Bowhawhan could be effective against dysphagia after stroke.

• Journal of Acupuncture Research
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• v.40 no.3
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• pp.265-271
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• 2023

Ossification of the posterior longitudinal ligament (OPLL) is a disease that narrows the spinal canal, causing neurological symptoms. To date, there have been several reports on traditional Korean medicine treatments for OPLL; however, there is no study on complex acupuncture treatment. Herein, we report 2 cases of cervical OPLL involving cervical pain, upper limb radiating pain, and hypoesthesia. The patients were diagnosed using C-spine computed tomography and did not receive any treatment at any other hospital. The patients were treated with acupuncture treatments, including electroacupuncture, pharmacopuncture, and acupotomy, at Daegu Korean Medicine Hospital at Daegu Haany University. The results were assessed using the visual analog scale, neck disability index, and Japanese Orthopedic Association scores, and the results indicated an improvement in the symptoms. Thus, this study demonstrated that complex acupuncture treatment may be helpful for treating cervical OPLL and improving the quality of life.

• Journal of Acupuncture Research
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• v.28 no.3
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• pp.1-11
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• 2011

Objectives : This study is to compare effects on Intracutaneous Bee Venom pharmacopuncture and Intramuscular Bee Venom pharmacopuncture in Lumbar Disc Herniation. Methods : We investigated 34 cases of patients with lumbar disc herniation and devided into two groups. Group A were treated with intracutaneous bee venom pharmacupuncture and group B were treated with intramuscular bee venom pharmacopuncture. To evaluate the treatment effects of two groups, we used visual analog scale(VAS) and Aberdeen LBP scale. Results : In VAS and Aberdeen LBP scale, that of group A was further improved than that of group B, but there was no statistical significance. Conclusions : Intracutaneous bee venom pharmacupuncture and intramuscular bee venom pharmacopuncture were effective treatments for lumbar disc herniation, but there was no statistical significance.

• The Korea Journal of Herbology
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• v.20 no.4
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• pp.41-51
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• 2005

Objectives : The purpose of this research was physiological activities, cytotoxicity, and antibacterial activities of the Cheongyeolsodokum and its constituent herbs. Methods : Physiological activities, cytotoxicity, and antibacterial activities were examined through the Cheongyeolsodokum and its constituent herbs. Results : In the physiological activities, the electron donating ability(EDA) of the water and ethanol extracts from the Cheongyeolsodokum were over 60% and 80% at 100 ppm, respectively. The EDA of the water and ethanol extract from the Cheongyeolsodokum ingredients were gradually increased as well. Water and ethanol extracts from the Cheongyeolsodokum and its constituent herbs inhibited xanthine oxidase activity, they showed superoxide dismutase(SOD)-like activity. The Cheongyeolsodokum and its constituent herbs inhibited cancer cell growth in a dose-dependant manner. Also, the clear zones against Staphylococcus aureus and S. epidermidis were clear shown at 2.5 and 5 mg/disc. Its constituent herbs showed the clear zone against various bacteria such as Candida albicans, S. aureus, S. epidermidis, and S. mutans were shown at 0.5 and 1mg/disc. Conclusions : We observed physiological activities, cytotoxicity, and antibacterial activities of the Cheongyeolsodokum and its constituent herbs. The results also indicated that water extract and ethanol extract of Cheongyeolsodokum and its constituent herbs can be used as a natural ingredient in food or cosmetic industry.

• Journal of Acupuncture Research
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• v.28 no.2
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• pp.173-181
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• 2011

Objectives : The purpose of this study is to report clinical effect of oriental meical for a not improved foot drop patient after herniated intervertebral lumbar disc surgery. Methods : The patient was treated using acupuncture, electroacupuncture, phamacopuncture treatment, herbal medication, moxibustion and physical treatment. And we measured of VAS, ROM of ankle and MMT. Results : After treatment, VAS, ROM of ankle and MMT were improved in case. Conclusions : Oriental medical treatment showed significant effect on patient that not improved foot drop after herniated intervertebral lumbar disc surgery.

• Applied Biological Chemistry
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• v.49 no.1
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• pp.70-76
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• 2006

Purecell, hydroxyethyl-cellulose-2-hydroxypropyltrimethyl ammonium chloride ether, was developed as a thickener and evaluated its functions for stability and safety when it was added in the cosmetic composition. Compared with a commercially available thickener Natrasol, Purecell have a basic chemical backbone of hydroxyethylcellulose which has been widely used in the cosmetic industry. pH and viscosity of Purecell was lower than those of Natrasol, however, a similar pH value to was shown when the Purecell was added into a shampoo or cream. The Purecell was stable to temperature and light. When 0.5% of the Purcell was added to a shampoo having cationic surfactant, a separation occurred due to the same cationic surfactant of the Purecell and shampoo. However, the shampoo and cream made with Purecell improved a smoothness and adaptability of hair. It also showed a negative response for Patch test of human, indicating the Purecell was safe for use.

• Clinics in Shoulder and Elbow
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• v.19 no.2
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• pp.78-83
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• 2016

Background: We investigated the risk factors for the recurrence of anterior shoulder instability after arthroscopic surgery with suture anchors and the clinical outcomes after reoperation. Methods: A total of 281 patients (February 2001 to December 2012) were enrolled into our study, and postoperative subluxation and dislocation were considered as recurrence of the condition. We analyzed radiologic results and functional outcome including the American Shoulder and Elbow Surgeons Evaluation Form, the Korean Shoulder Society Score, and the Rowe scores. Results: Of the 281 patients, instability recurred in 51 patients (18.1%). Sixteen out of 51 patients (31.4%) received a reoperation. In terms of the functional outcome, we found that the intact group, comprising patients without recurrence, had a significantly better functional outcome than those in the recurrent group. The size of glenoid defect at the time of initial surgery significantly differed between intact and recurrent group (p<0.05). We found that the number of dislocations, the time from the initial presentation of symptoms to surgery, and the number of anchor points significantly differed between initial operation and revision group (p<0.05). The functional outcome after revision surgery was comparable to intact group after initial operation. Conclusions: Eighteen percent of recurrence occurred after arthroscopic instability surgery, and 5.6% received reoperation surgery. Risk factors for recurrence was the initial size of glenoid defect. In cases of revision surgery, good clinical outcomes could be achieved using additional suture anchor.

• The Korea Journal of Herbology
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• v.20 no.3
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• pp.19-27
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• 2005

Objectives : The antioxidant activities of Yeonkyo-san and its ingredient were investigated for industrial application. Methods : We experimented radical scavenging effect, superoxide dismutase and cytotoxicity effect of various cancer cell. Results : The result were obtained as follows : Primary testing of cytotoxicity of Yeonkyo-san and ingredient was done for G361. B16F10, MDA and A549 cell lines. Yeonkyo-san and ingredient water extract, ethanol extract showed cytotoxicity of over 90% respectively against cell line. The electron donating ability(EDA) of water extract from the Yeonkyo-san was higher than 60%, ethanol extract from the Yeonkyo-san was over 80% at 1000 ppm. The electron donating ability(EDA) of water extract and ethanol extract from the Yeonkyo-san ingredients were increased as well. SOD-like activity was high as 75% in 700 ppm, it was increased. All the other samples showed less than 40% SOD-like activity. Conclusions : The results indicated that water extract and ethanol extract of Yeonkyo-san and ingredient can be used as a natural ingredient with biological functions in cosmetic and food composition.