• Journal of the Korea Convergence Society
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• v.9 no.1
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• pp.111-116
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• 2018

The aim of this study was to determine the effects of tote bag weight on muscle thickness of pectroalis minor and tone of upper trapezius in young adult women. 27 women habitual of carrying tote bags. The subjects were measured the tone of the upper trapezius muscle and the thickness of the pectoralis minor muscle while carrying tote bags with the weight of 0%, 5%, 7.5% and 10% of the subjects' body weight. As the weight load increased, the upper trapezius muscle demonstrated significantly increased muscle tone (p<.05). additionally, a significantly increased thickness in the pectoralis minor muscle was noted(p<.05). These findings suggest that the habit of carrying a tote bag on the wrist may be disadvantageous to improving the two muscles in young women. Therefore, this study recommend women who likely used tote bag decrease the weight of the bag.

• Journal of Yeungnam Medical Science
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• v.20 no.2
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• pp.212-216
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• 2003

자연성 종격동 기종은 젊은 연령에서 주로 직접적인 이유가 없이 발생되는 흔치 않은 질환으로 응급실에서 급성 흉통의 원인으로 감별해야할 질환중의 하나이다. 간혹 응급상황이 발생하여 응급 처치를 받을 수 있다고 하지만 대부분에서 보존적인 치료로 호전이 되는 양호한 질환이기도 하다. 저자들은 15세 남자에게 특별한 유발 요인이 없이 발생하였고 입원치료 없이 응급의료 센터에서 바로 퇴원한 자연성 종격동 기종 1례를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

• The Science & Technology
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• v.29 no.11 s.330
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• pp.82-83
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• 1996

지난 3월 경기도 용인 명지대에서 발족한 천연신기능성소재센터는 산학협동을 통해 기술집약적이면서 고부가가치를 창출할 수 있는 소재를 공동 개발하기 위해 50여명의 젊은 연구원들이 활발한 연구활동을 펴고 있다. 명지대 용인 캠퍼스 30만평중 5만평의 연구단지에 세워지는 이 연구센터는 경기도와 제휴, 지역경제 발전에도 이바지하게 될 것이다.

• The monthly packaging world
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• s.205
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• pp.81-87
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• 2010

식품 및 위생, 현대 의학에도 지대한 공헌을 하고 있는 플라스틱 산업계는 여전히 발전 가능성이 있는 젊은 산업이고, 따라서 역동적이고 혁신적이다. 플라스틱 업계의 이미지는 신제품, 신공정, 새로운 애플리케이션이 그 특징이지만 경쟁이 치열해지는 것도 플라스틱 업계의 특징 중 하나이다. 원료 생산 업체들, 가공업체들, 플라스틱 및 고무 가공기계 제조업체들, 사용자들에 이르기까지 모든 사람들이 국제적으로 대표성이 뛰어난 박람회를 원하고 있으며 이 박람회는 또한 세계적인 정보 교환의 장이 되어 수익성 있는 사업상의 결정을 도와줘야 할 의무가 있다. 이러한 플라스틱산업계의 대표적 박람회가 뒤셀도르프에서 열리는 K 전시회이다. 본 고에서는 전 세계 플라스틱 산업계 동향과 함께 K 2010에 대해 살펴보도록 한다.

• Journal of Korea Entertainment Industry Association
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• v.14 no.3
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• pp.27-40
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• 2020

The marathon has long been established as a representative lifestyle for all ages. With the recent expansion of the Work and Life Balance trend across the society, marathon with a relatively low barrier to entry is gaining popularity among young people in their 20s and 30s. By analyzing the issues and related words of the marathon event, we will analyze the spottainment elements of the marathon event that is popular among young people through keywords, and suggest a development plan for the differentiated event. In order to analyze keywords and related words, blogs, cafes and news provided by Naver and Daum were selected as analysis channels, and 'JTBC Marathon' and 'Culture' were extracted as key words for data search. The data analysis period was limited to a three-month period from August 13, 2019 to November 13, 2019, when the application for participation in the 2019 JTBC Marathon was started. For data collection and analysis, frequency and matrix data were extracted through social matrix program Textom. In addition, the degree of the relationship was quantified by analyzing the connection structure and the centrality of the degree of connection between the words. Although the marathon is a personal movement, young people share a common denominator of "running" and form a new cultural group called "running crew" with other young people. Through this, it was found that a marathon competition culture was formed as a festival venue where people could train together, participate together, and escape from the image of a marathon run alone and fight with themselves.

• Journal of the Korean Society of Radiology
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• v.82 no.4
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• pp.971-976
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• 2021

Phyllodes tumors of the breast are relatively rare fibroepithelial tumors that account for less than 1% of primary breast neoplasms. Phyllodes tumors have epithelial and stromal components and they originate from the periductal stroma. They are classified as benign, borderline, or malignant. Carcinomatous differentiation of the epithelial components of phyllodes tumors is rare, and their imaging features have not been accurately described. Herein, we report a rare case of invasive ductal carcinoma originating from a borderline phyllodes tumor in a 21-yearold female with radiologic and pathologic findings.

• The korean journal of orthodontics
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• v.34 no.6 s.107
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• pp.506-513
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• 2004

Osteoclast action is necessary for alveolar bone remodeling in orthodontic tooth movement. The nervous system has also been reported to be associated with bone remodeling. This study was aimed to investigate the changes of osteoclasts in the periodontal ligament (PDL) space after surgical resection of the inferior alveolar nerve (IAN). Experimental rats were divided into young and adult groups. A surgical resection procedure of the IAN was carried out in the left side of the mandible and a sham operation in the right side of the mandible. The number of osteoclasts on the bundle bone surface and the resorption activity of the osteoclasts were histomorphometrically measured. The changes in distribution of substance P (SP) immunoreactive (IR) nerve fiber were evaluated in the PDL and pulp. SP-IR nerve fiber was depleted in both the PDL and pulp of the IAN resection side in both groups, which confirmed the resection of IAN to be successfully conducted. The number of osteoclasts in the IAN resection side was significantly reduced in both the young and adult groups (p<0.01 and p<0.05), whereas the resorption activity of osteoclasts did not show any significant difference between the IAN resection side and the sham operation side in both groups (p>0.05 and p<0.05). The adult group showed that the number of osteoclasts reduced significantly (p<0.01) and the resorption activity didn't change in comparison with the young group (p>0.05). These results suggest that surgical resection of the IAN and aging reduce the population of the recruited osteoclasts within the PDL, but don't affect on the osteoclastic resorption activity.

• Sleep Medicine and Psychophysiology
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• v.5 no.1
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• pp.111-117
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• 1998

Objectives : 'First-night effect' has been a well-known concept since 1960's. It is important because it is one of the major factors to be considered in assessing the reliability of polysomnographic data. However, 'reverse first-night effect' has also been described, resulting in the inconsistency of conceptualization. We attempted to investigate on the first-night effect in adults by having each of them take two nights of polysomnography in a controlled environment. Young healthy adult volunteers were chosen as subjects in order to rule out age- or health-related confounders. Methods : Polysomnography was performed on eight male medical students (mean $age=23.5\;{\pm}\;0.9$) for two nights with Grass model 78 polysomnograph. We scored manually under the standard protocol each epoch of the sleep records. Sleep variables were obtained and compared between the two nights. Results : Sleep period time(SPT) and total sleep time(TST) of the third fraction of night were significantly longer on the first night than on the second night (p<0.05). However, other sleep variables such as percentage of each sleep stage, sleep latency, REM sleep latency, number of waking, and sleep efficiency were not different between the two nights. Conclusion : We could not confirm the existence of first-night effect in this study. In healthy young male adults, it may not happen at all or may happen to a very negligible degree. Young healthy adults may have more adaptability to a new sleep environment. Also, the provision of a reasonably comfortable sleep environment could have helped them with abolition of first-night effect.

• Journal of Popular Narrative
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• v.27 no.1
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• pp.301-338
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• 2021

John Woo's A Better Tomorrow arrived at the turning point of Korean society between 1987 and 1988. The Hong Kong movie boom that started here reached its peak around the 1990s. What does this phenomenon mean? Hong Kong action films have functioned as an important resource for Korean young male subculture since the late 1960s. The audience of A Better Tomorrow matches the audience of previous Hong Kong films in a generational and gendered way. The fascination of Hong Kong action films by young Korean men from 1987 to 1991 has nothing to do with Hong Kong's political context. However, a certain affect is shared between Korean and Hong Kong audiences. It could be said to be the brotherhood within the struggling group. The affective economies of this fraternity embodies the broad solidarity of 1987, the solidarity of comrades seeking to resist the violence of the world. It also works on symbolic and practical gender bias. In other words, this loyalty is nothing but loyalty between the (male) brothers who are confronting the injustice of the world. This is the "translational possibility" of A Better Tomorrow.

• Journal of the Korean Orthopaedic Association
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• v.56 no.3
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• pp.266-271
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• 2021

Osteoporosis associated with pregnancy and lactation is a rare disease that can cause osteoporotic vertebral compression fracture (OVCF). Patients usually complain of severe back pain, which is easily mistaken for pain due to pregnancy, childbirth, and lactation, making a rapid diagnosis and treatment difficult. The authors diagnosed OVCF related to pregnancy and lactation through a physical examination, simple radiography, whole-body bone scan, magnetic resonance image, bone marrow density, and blood tests in a 29-year-old female patient and a 31-year-old female patient who presented with low back pain. This paper reports two cases of symptom improvement through a teriparatide injection, wearing thoracic lumbar sacral orthosis and taking calcium and vitamin D with a review of the literature.