Nitric Oxide와 Vasoactive Intestinal Peptide가 기니 픽 위저부 평활근 이완에 미치는 영향

박효진(Hyo Jin Park),이영호(Hyo Jin Park),이혜영(Hye Young Lee),정준표(Jun Pyo Chung),이관식(Kwan Sik Lee),전재윤(Chae Yoon Chon),강복순(Bok Soon Kang),박인서(In Suh Park) 대한소화기학회 1997 대한소화기학회지 Vol.29 No.3

N/A Background/Aims: The autonomic nervous system distributed throughout the stomach consists of adrenergic, cholinergic, and non-adrenergic, non-cholinergic (NANC) nerves. Of these, NANC nerve fibers are known to be distributed all throughout the gastrointestinal tract and they provide the main inhibitory nerve supply to the gut smooth muscle. NANC nerve is known to release neurotransrnitters such as nitric oxide (NO), adenosine 5-triphosphate (ATP) and vasoactive intestinal peptide (VIP). However, the effect produced by each of the NANC neurotransmitter depends on an animal species and parts of gastrointestinal tract. Therefore, this experiment applied electrical field stirnulation at the circular musc]e of a guinea pigs gastric fundus to observe any relation of NANC nerve in muscu]ar relaxation. Methods: The effect of ATP, VIP, and NO on muscle re)axation was determined through the electrical field stimulation, and each neurotrans- mitters ability to regulate the muscle relaxation was compared. Results: Muscle strips were relaxed in response to electrical field stimulation that was applied. The relaxation was not inhibited by atropine or guanethidine, but was completely inhibited by tetrodotoxin. The muscle relaxation caused by NANC nerve stimulation was inhibited by L-NNA, VIP antagonist, and suramin. L-NNA was the most potent inhibitor among them. The muscle relaxation caused by electrical field stimulation was not further inhibited by VIP antagonist after the pretreatment of L-NNA, however, it was further inhibited by L-NNA following the treatment of VIP antagonist. The electrically stimulaed induced muscle relaxation was almost complete]y abolished by coadministration of L-NNA with VIP antagonist and suramin, The exogenous VIP-induced muscle relaxation was not affected by presence or absence of L-NNA. Oxyhemoglobin or methylene blue treatment inhibited the muscle relaxation induced by electrical field stimulation. Conclusions: Non-adrenergic and non-cholinergic nerve has an inhibitory neurotransmission in a guinea pigs gastric fundus circular muscle and NO is the principal inhibitory neurotransmitter of NANC nerve. NO mediated muscle relaxation is thought to be associated with increase of cGMP in muscle cells. (Korean J Gastroen- terol 1997;29:2S9 - 300)

Design of DC Small Motor Fixings and Rotors for Torque Improvement

박효진(Hyo Jin Park) Korean Society for Precision Engineering 2019 한국정밀공학회지 Vol.36 No.11

This paper addresses the design of an integrated high torque DC motor. In this paper, a method to improve the torque according to the shape of the stator magnet and the rotor teeth of the DC motor is studied. During the course of design, the rotor and stator are designed to satisfy the required performance through FEM analysis by reflecting similar materials in design. As a result of satisfying the design result and requirements, the motor that is imported and operated in the future can be applied as a domestic developed product.

안면·두피·데콜테 관리가 중년여성의 스트레스에 미치는 영향

박효진 ( Hyo-jin Park ),장숙희 ( Suk-hee Jang ),최세영 ( Se-young Choi ),이인희 ( In-hee Lee ) 한국미용예술경영학회 2012 미용예술경영연구 Vol.6 No.4

This study was carried out to find out the effects on the overall stress of middle-aged woman in the facial treatment going side by side with treatment of scalp and d▯collet▯, and the treatment was carried out for middle-aged women 20 people twice a week for a total of 8 times as to be divided into Group A (n=7) for facial treatment, Group B (n-=7) for facial and scalp treatment Group C (n-6) for facial and dècolletè treatment and the following conclusions were obtained by the EEG (Electro Encephalo Graph) measurements after facial, scalp and dècolletè treatment. There was a significant difference in Group B for facial and scalp treatment in ‘physial stress (left and right)’, ‘Psychological stress (left and right) and the ‘anti -stress (left and rignt)’. These results from the treatment of scalp are thought to help promote a smooth supply of oxygen in the brain and to help relax from the excitement of the mind, and to be increased bodys resistance to stress by the stability of the body and mind due to ease the physical and psychological stress. And the variety of research and program development for the effects on the stress of middle-aged women is expected to be applied to an alternative therapy of stress relief them in the future.

중년여성의 안면·두피·데콜테 관리가 피부에 미치는 효과

박효진 ( Hyo-jin Park ),이인희 ( In-hee Lee ) 한국미용예술경영학회 2013 미용예술경영연구 Vol.7 No.2

This study was performed to examine the effect of face, scalp and decollete care for middle aged-women on their stress and skin. After selecting total 20 middle aged-women in Daejeon-si, the test was conducted for total eight times(20minutes each time, twice a week for 31 days) from July 1st to July 30 2012 with three groups including Group A(n=7) with only facial care, Group B(n=7) with combined face and scalp care and Group C(n=6) with combined decollete and facial care. In the results of analyzing the survey after the test, the highest satisfaction was shown with the group with combined decollete and facial care, and then respectively the group with scalp and facial care and the group with only facial care. In order to fully determine the effect of face·.scalp·.decollete care for middle aged-women on their skin condition and stress, it is considered to be necessary to accumulate experimental researches, to extend the test model of this study, to draw additional test models and have following researches on them. It is expected to research/develop various programs about the effect on middle aged-women's skin condition and stress and that can be effectively applied to middle aged-women's skin condition changes and stress relieving in the future.

경력단절 경험을 가진 여성의 노동시장 재진입에 영향을 미치는 요인에 관한 연구: 미취학 자녀를 둔 여성의 일-가족양립 정책과 서비스를 중심으로

박효진 ( Hyo Jin Park ),은선경 ( Sun Kyoung Un ) 한국가족복지학회 2012 한국가족복지학 Vol.17 No.1

본 연구는 미취학 자녀를 둔 여성들이 경제활동을 중단하였다가 노동시장에 재진입하는 요인을 파악해보고자 하는데 그 목적을 두고 있다. 이를 위해 본 연구에서는 여성가족패널 1차년도와 2차년도 자료를 활용하였다. 연구의 대상은 미취학 자녀를 두고 있고 과거 경제활동 경험이 있는 여성으로써, 노동시장 재진입이 이루어진 집단과 노동시장에 이탈되어 있는 집단으로 구분하여 로짓분석을 수행하였다. 본 연구의 결과를 살펴보면, 교육수준, 가구소득, 취학자녀수와 자녀수의 변화, 부모동거여부, 일자리변화가 노동시장 재진입에 영향을 미치는 요인으로 작용하였다. 즉, 교육년수가 높을수록, 취학자녀의 수가 많을수록, 미취학 자녀수가 감소할수록, 부모세대와 동거할수록 미취학 자녀를 둔 여성의 노동시장 재진입의 가능성이 높았다. 또한 출산을 이유로 일자리의 변화가 있었던 집단인 경우에는 출산후 노동시장에 재진입할 가능성이 높으며, 가구 소득이 적을수록 노동시장 재진입의 가능성이 높았다. 본 연구에서 자녀양육부담 감소, 부모의 동거가 노동시장 재진입의 가능성을 높이지만, 보육시설이용, 육아휴직, 부성휴가와 같은 일-가족양립 제도의 측면이 노동시장 재진입에 있어 유의미하지 않게 나타나지 않은 점, 그리고 가구소득이 적을수록 노동시장 재진입이 높게 나타난 점은 현재의 일-가족양립을 위한 제도의 개선과 다양한 지원이 필요함을 시사하고 있는 결과라 하겠다. This study determines the factors influencing the reentry career interruptive women into the labor market. To achieve this goal, data from KLoWF(Korean Longitudinal Survey of Women & Families) was used in this study. The subjects of the study are women with preschool-aged children who have experienced labor participation in the past. In this study, Logistic regression analysys was used to analyze and compare the group of women who experienced reentry into the labor market the group of women who had left the labor market. The result show that the reentry of career interruptive women into the labor market is affected by the following major factors: education level, change in the number of children, living together with a parent, and change in employment. As the burden of caring for children decreases, the number of women reentry into the labor market increase because the major cause of women leaving the labor market is to care for their children. Child care service is important for the compatibility of job and family; therefore, child care system ought to be enforced. However, the effect of child care service and a child care system is insufficient to allow women to experience reentry into the labor market. Therefore, this study suggests that child care service and a child care system should be improved upon, and various supports of child care service and a child care system are necessary for the reentry of career interruptive women into the labor market.

NGN에서의 개방형 IPTV 서비스

박효진,배영인,최준균,Park, Hyo-Jin,Bae, Young-In,Choi, Jun-Kyun 대한임베디드공학회 2008 대한임베디드공학회논문지 Vol.3 No.4

Internet protocol television (IPTV), one of the most emerging services, offers multimedia streaming services with security, reliability, and relevant quality of service (QoS)/quality of experience (QoE). It provides added values to all the involving players and also brings technical and business challenges to them. For IPTV services, we expect to adopt the next generation network (NGN) environment for high quality and the Web technologies for personalization to meet the customer's necessity. Web can provide an open, flexible, and agile platform. Therefore, in this paper, we propose personalized IPTV services based on Web-based open platform in NGN environment and present functional architecture for Web-based personalized IPTV services. Technical issues for deploying the proposed IPTV services using Web are also provided. The objective of this paper is to analyze the critical architectural issues for developing viable and feasible networking platform models for personalized IPTV services.

운용성을 개선한 항공기용 질소충전트레일러 국산화 개발

박효진(Hyo-Jin Park) 한국항공우주학회 2018 韓國航空宇宙學會誌 Vol.46 No.6

KUH-1에 적용되는 질소충전트레일러는 항공기의 주/전륜 완충기, 테일범퍼완충기, 브레이크 축압기, 타이어 등에 질소를 충전하는 장비이다. 명칭에서 알 수 있는 것과 같이 질소충전트레일러는 질소 충전과 더불어 이동성을 가지고 있는 장비이다. 기존 미국의 Tronair사에서 독점 공급하여 국내에서는 수입에 의존하던 품목이며, 본 국산화 개발품은 도입품의 성능을 만족할 뿐만 아니라 운용 시 도입품보다 용이하도록 설계를 추진하였다. 제15-4차 민관공동투자사업으로 선정되어 개발이 진행되었으며, 민관투자기업인 한국항공우주산업과 국방기술품질원의 개발관리 지원하에 개발요구도 분석 및 시험평가가 수행되었으며, 2017년 5월 군사용 적합 판정 결과 승인을 받았다. Nitrogen charging trailer applied to KUH-1 is a device to charge Nitrogen in main front wheel buffer, tail bumper buffer, brake accumulator and tire of aircraft. As the name suggests, it is a device that has mobility along with nitrogen charging. Originally supplied by Tronair in the United States, it was imported from Korea, and the locally developed product not only satisfies the performance of the existing product, but also designed to be easier than the product introduced in the operation. It was selected as the joint investment project of the 15th civilian government building, and development needs analysis and test evaluation were carried out under the support of development and management of Korea Aerospace Industries and Defense Agency for Technology and Quality.

대장 흑색소증의 임상적 고찰

박인서(In Suh Park),문영명(Young Myoung Moon),정재복(Jae Bock Chung),이상인(Sang In Lee),김원호(Won Ho Kim),이관식(Kwan Sik Lee),정현주(Hyeon Joo Jeong),박효진(Hyo Jin Park),정준표(Jun Pyo Chung),박경아(Kyung Ah Park),남문석(Moon Suk 대한소화기학회 1993 대한소화기학회지 Vol.25 No.5

N/A Melanosis coli associated with ingestion of anthraquinone compounds in laxatives is due to accumulation of macrophages containing brown lipofuscin-like pigments in the lamina propria. We analyzed the clinical, endoscopic, and pathologic findings and colonic motor functions of melanosis coli and performed electronmicroscopic study to know the ultrastructural changes of neural elements. We studied 13 cases (mean age 48.1 +- 18.5 years, male to female cases 6:7). The vegetable laxatives containing anthraquinone derivatives, aloe or bisacodyl were used mainly and the mean duration of laxative abuse was l.5 +- 1.2 years. Endoscopically, dark brownish mucosal disoloration showed polyhedral forms divided by fine striae of lighter color. Melanosis was more intense in the more oral part of the bowel. Pathologically, no relationship was found between grade of melanosis and kind of drugs, daily dose, or durat.ion of addiction. Ultrastructural features on nerve structure were ballooning of axon. reduction of nerve specific cell organelles, and increased lysosomal activity. The alterations of these neural elements are assumed to he associated with impaired colonic motility. In conclusion, vegetable laxatives such as aloe, seem to be an important causes of melanosis coli in Korea. melanosis coli have a tendency to damage nerve fibers. We should avoid laxative abuse in order to prevent pragressing to cathartic colon.

팔십여 회의 색소 레이저 치료는 멜라닌 세포 모반의 어느 깊이까지 영향을 미칠까?

박효진 ( Hyo Jin Park ),박철종 ( Chul Jong Park ),이경호 ( Kyung Ho Lee ) 대한피부과학회 2021 대한피부과학회지 Vol.59 No.6

Total excision is the treatment of choice of congenital melanocytic nevus. However, it is often infeasible, laser therapy is being explored as a useful therapeutic approach. A 26-year-old woman presented with a solitary, skin-colored plaque surrounded by whitish patches on her right calf. She was diagnosed with a congenital melanocytic nevus and underwent 84 laser treatment sessions using a 1,064 nm Nd:YAG laser over 7 years. Histopathological examination of the whitish plaque revealed small foci of nevus cells that penetrated the tissue to a depth that was 12-fold higher than the epidermal depth (1,260 μm). No report in the literature describes histopathological findings of a congenital melanocytic nevus treated with 84 sessions of laser therapy. This case report highlights the depth of penetration of pigment laser to treat a congenital melanocytic nevus. Our findings will serve as useful clinical guidelines to perform laser treatment for congenital melanocytic nevi. (Korean J Dermatol 2021;59(6):474∼476)

Helicobacter pylori 에 대한 혈청 IgG 항체의 양성율 및 혈청 Pepsinogen 과의 상관관계

박효진(Hyo Jin Park),이병권(Byoung Kwon Lee),정준표(Jun Pyo Chung),조현근(Hyeon Geun Cho),이상인(Sang In Lee),박인서(In Suh Park),손영모(Young Mo Sohn),이창훈(Chang Hoon Lee),송경순(Kyung Soon Song) 대한내과학회 1995 대한내과학회지 Vol.48 No.1

N/A Objectives: This study was designed to estimate the prevalence of Helicobacter Pylori infection in a healthy population in Korea and correlate between H. Pylori infection and serum pepsinogen levels as markers of gastritis and atrophic gastritis. Methods: We collected sera obtained form 104 children and 173 adult who had no gastrointestinal symptoms and measured specific IgG antibodies against H. Pylori by Bio-Rad G. A. P test. Serum pepsinogen 1 and 2 concentrations were determined by radioimmunoassay. Results: 1) The frequency of H. Pylori infection increased with age and was more than 80% over age 40. 2) Serum pepsinogen 1 and 2 concentrations in the healthy population were increased with age, while the serum pepsinogen 1/2 ratio decreased. 3) There were no significant statistical differences between the titre of specific IgG antibodies against H. Pylori and serum pepsinogens. Conclusion: The data from this study suggested that the prevalence of Helicobacter Pylori infection increased with age and serum pepsinogen levels were related to the presence or absence of H. Pylori infection. We conclude that H. Pylori infection is one of the factors which helps develop atrophic gastritis, the precursor lesion of gastric cancer.