The Effects of Caffeine on the Long Bones and Testes in Immature and Young Adult Rats

곽유진,최현혜,노재숙 한국독성학회 2017 Toxicological Research Vol.33 No.2

This study was to evaluate the age-dependent effects of caffeine exposure on the long bones and reproductive organs using male rats. A total of 15 immature male rats and 15 young adult male rats were allocated randomly to three groups: a control group and two groups fed caffeine with 120 and 180 mg/kg/day for 4 weeks. Exposure to caffeine at either dose significantly reduced body weight gain; a proportional reduction in muscle and fat mass in immature animals, whereas a selective reduction in fat mass with relatively preserved muscle mass in young adult animals. The long bones of immature rats exposed to caffeine were significantly shorter and lighter than those of control animals along with decreased bone minerals. However, there was no difference in the length or weight of the long bones in young adult rats exposed to caffeine. Exposure to caffeine reduced the size and absolute weight of the testes significantly in immature animals in comparison to control animals, but not in young adult animals exposed to caffeine. In contrast, the adrenal glands were significantly heavier in caffeine-fed young adult rats in comparison to control animals, but not in caffeine-fed immature rats. Our results clearly show that the negative effects of caffeine on the long bones and testes in rats are different according to the age of the rat at the time of exposure, and might therefore be caused by changes to organ sensitivity and metabolic rate at different developmental stages. Although the long bones and testes are more susceptible to caffeine during puberty, caffeine has negative effects on body fat, bone minerals and the adrenal glands when exposure occurs during young adulthood. There is a need, therefore, to educate the public the potential dangers of caffeine consumption during puberty and young adulthood.

Modifying the BiVO4 Surface Catalytic via Phosphorylation Treatment for Photoelectrochemical Ammonia Oxidation

곽유진,홍원태,김정규 한국공업화학회 2023 한국공업화학회 연구논문 초록집 Vol.2023 No.0

초음파를 이용하여 관찰한 자궁근종의 한의 치료 경과 고찰 2례 : 증례보고

곽유진,박상희,정명주,박성우,박웅,조희근 대한한방부인과학회 2015 大韓韓方婦人科學會誌 Vol.28 No.1

Objectives: We report two cases that have an effective result with Koreantraditional medical treatment to two patients who have uterine fibroids, usingtransabdominal ultrasonography for checking the size of uterine fibroids. Methods: A 44-year-old patient and a 43-year-old patient were treated withan herbal medicine, acupuncture and cupping therapy. We followed up thesymptoms and the size of uterine fibroids. Results: The 44-year-old patient was asymptomatic, her size of the uterinefibroid was reduced for 6 months. Also, the 43-year-old patient experienced thatthe symptoms such as urinary frequency, ovulation pain, heavy bleeding wereimproved and the size of the uterine fibroid was reduced. Conclusions: This results suggest that Korean traditional medical treatment ifeffective for both asymptomatic and symptomatic uterine fibroids and ultrasonographyis useful for checking the effect of Korean traditional medical treatment. Furthercase series and studies are warranted.

몸공부를 통한 Character Education 비판: 사람됨 교육의 관점에서

곽유진 한국인격교육학회 2014 인격교육 Vol.8 No.3

The aim of this paper is to criticize the current main discourse ‘Character Education’ through the horizon of traditional MomGongBu. In a pluralistic society where a large number of values coexist, to exert the practice of individuals properly, students learn how to manage and control the various problems that arise in schools. Schools seek to equip the students for dealing with the various moral virtue skills and attitudes in the manner of ‘Character Education,’ directly dealing with the social norms and values. However, students actually don’t try to practice them but rather just take it as a theory. Aside from this, they have not been true moral subjects. The reason for lack of practical ability is that the existing virtue-centered education did not cover the ‘Mom,’ which functions as a bridge affecting the mind and the heart. Children learn the ability to adjust and control themselves, and then realize its value, internalize it through the practice in daily life. Being inhabited allows them to practice what they know naturally in their life. Therefore, moral education in the true sense of the term is to instill ‘Saramdaum,’ which means human beings who both have intelligence and humanity. 이 글의 목적은 현재 우리나라 인성 교육 담론에 깊이 침투한 ‘Character Education’을 전통적 몸공부의 지평에서 비판하는 것이다. 수많은 다원적 가치가 공존하는 사회에서 개인들의 실천이 바람직하게 발휘될 수 있도록 학생들은 학교에서 자신에게 발생하는 여러 문제들을 관리하고 조절하는 법을 배운다. 학교는 사회적 규범과 가치를 직접적으로 다루는 ‘Character Education’의 방식으로 학생들이 여러 덕목을 도덕적으로 다룰 수 있는 능력과 태도를 갖출 수 있도록 노력한다. 그렇지만 실상 학생들은 머리로만 알고 실천 하려들지 않으며, 진정한 도덕적 주체로 거듭나지 못하고 있다. 이러한 실천력의 결여는 기존의 덕목 중심의 교육이 정신에 영향을 주는 매개인 ‘몸’에 대한 접근을 다루고 있지 않았기 때문이다. 아동기는 자신을 조절하고 다스리는 능력을 우선 몸으로 배워서 일상의 실천을 통해 그 가치를 실현하고 이를 내면화하는 시기이다. 몸에 새겨야만이 자기가 알고 있는 것을 생활 속에서 자연스럽게 실천으로 옮길 수 있기 때문이다. 진정한 의미의 사람됨 교육은 사람들에게 ‘사람됨’이 스며들게 하는 것이다.

Long-Term Results of the Leaflet Extension Technique for Rheumatic Aortic Regurgitation: A 20-Year Follow-up

곽유진,안혁,최재웅,김경환 대한흉부외과학회 2019 Journal of Chest Surgery (J Chest Surg) Vol.52 No.1

Background: Although aortic valve repair can reduce prosthesis-related complications, rheumatic aortic regurgitation (AR) caused by leaflet restriction is a significant risk factor for recurrent AR. In this study, we evaluated the long-term results of the leaflet extension technique for rheumatic AR. Methods: Between 1995 and 2016, 33 patients underwent aortic valve repair using the leaflet extension technique with autologous pericardium for rheumatic pure AR. Twenty patients had severe AR and 9 had combined moderate or greater mitral regurgitation. Their mean age was 32.2±13.9 years. The mean follow-up duration was 18.3±5.8 years. Results: There were no cases of operative mortality, but postoperative complications occurred in 5 patients. Overall survival at 10 and 20 years was 93.5% and 87.1%, respectively. There were no thromboembolic cerebrovascular events, but 4 late deaths occurred, as well as a bleeding event in 1 patient who was taking warfarin. Twelve patients underwent aortic valve reoperation. The mean interval to reoperation was 13.1±6.1 years. Freedom from reoperation at 10 and 20 years was 96.7% and 66.6%, respectively. Conclusion: The long-term results of the leaflet extension technique showed acceptable durability and a low incidence of thromboembolic events and bleeding. The leaflet extension technique may be a good option for young patients with rheumatic AR.

Sol-Flame-based Transition Metal Doped BiVO4 for enhancing Solar-assisted Water Splitting

곽유진,김정규 한국공업화학회 2023 한국공업화학회 연구논문 초록집 Vol.2023 No.0

Development of Castleman Disease in the Paravertebral Space Mimicking a Neurogenic Tumor

곽유진,박샘이나,강창현,김영태,박인규 대한흉부외과학회 2019 Journal of Chest Surgery (J Chest Surg) Vol.52 No.1

Castleman disease is a relatively rare disease, characterized by well-circumscribed benign lymph-node hyperplasia. The disease may develop anywhere in the lymphatic system, but is most commonly reported as unicentric Castleman disease in the mediastinum along the tracheobronchial tree. It is usually asymptomatic and detected on plain chest radiography as an incidental finding. We report an incidentally detected case of Castleman disease in the paravertebral space that was preoperatively diagnosed as a neurogenic tumor and treated by complete surgical resection.

Enhancing Solar-assisted Water Splitting of BiVO₄ via Rapid Sol-Flame-based In-situ Transition Metal Doping

곽유진,김정규 한국공업화학회 2022 한국공업화학회 연구논문 초록집 Vol.2022 No.1

IEEE 9 bus 모델 기반 AC/DC Hybrid 배전망 시뮬레이션

곽유진(Yu-jin Kwak),박규훈(Kyu-hun Park),권일(Il Kwon),무하마드 우스만(Muhammad Usman),이방욱(Bang-wook Lee) 대한전기학회 2023 대한전기학회 학술대회 논문집 Vol.2023 No.10-2

포스트모던의 지평에서 바라본 DI(Differentiated Instruction)의 의미

곽유진(Kwak Yoo Jin) 제주대학교 초등교육연구소 2014 초등교육연구 Vol.- No.18

이 연구는 ‘Differentiated Instruction(이하 DI)’이 어떤 의미가 있는지 철학적으로 규명하기 위한 것이다. DI란 학생들이 가지고 있는 다양성인 학습준비도, 흥미, 학습 프로파일에 따라 학습내용, 학습과정, 학습 결과물, 학습 환경에 차이를 반영하는 수업이다. 근대교육은 ‘동일성·획일성·총체성’을 추구한다. DI는 근대교육이 억압한 다양성, 차이성에 주목하며, 이는 DI와 포스트모던과 만나는 접점이다. 차이를 인정하는 DI가 이루어지는 교실에서는 고정적인 것을 다시금 재현하는 ‘앎’이 아닌 생성적 성격을 띤 ‘배움’이 발생한다. 이를 통해 교사는 학생이 드러내는 타자성에 응답하는 책임감 있는 존재로 거듭나며, 교실의 리좀화가 이루어진다. DI란 학생이 가진 엔텔레키(entelechy)를 진단하여 구체화 시키는 작업이며, 학생은 자신의 고유성을 보장받으며 무한한 존재가 되어 간다. This study is to examine the meaning of Differentiated Instruction. It studies the main concept of DI and its ideas. DI is a mode of giving instruction that differentiates content, process, product and classroom system, responding to the students diversities such as readiness, interests and learning profiles. Important aspects of modern education are equality, objectivity and uniformity. However, in DI, there is a focus on difference and diversity, which are aspects that are oppressed in modern education. In a differentiated classroom with diversity, learning with continued variation would emerge. In this case, a teacher would act in a responsive role and a rhizome-network would be built. DI is described as a diagnosis and a way to realize students entelechy, so that students can be an infinite-being.