Park's 벡터 패턴의 왜곡률을 이용한 고정자 권선 고장 자동진단

宋明現(Myung-Hyun Song),朴奎南(Kyu-Nam Park),韓東奇(Dong-Gi Han),梁哲午(Chul-Oh Yang) 대한전기학회 2008 전기학회논문지 P Vol.57 No.2

In this paper, an auto-diagnosis method of the stator winding fault for small induction motor is suggested. 3-phase stator currents are sampled, filtered, and transformed with Park's vector transformation. After then Park's vector patterns are obtained. To detect the stator winding fault automatically, a distortion ratio is newly defined and compared with the one of healthy motor, and the threshold levels of distortion ratio are suggested. The 2-turn, 4-tum, 8-turn winding fault are tested with no load, 25%, 50%, 75%, and 100% rated load. The distortion ratio of the Park's vector patterns are increased as the increase of the faulted turns. but are same as the increase of the load.

국립공원 3개 저수지에 서식하는 생태계교란 어종의 서식양상과 먹이생물, 어류상에 미치는 영향

박승철 ( Seung-chul Park ),이광열 ( Kwang Yeol Lee ),최광식 ( Kwang-seek Choi ),한미숙 ( Mee-sook Han ),고명훈 ( Myeong-hun Ko ) 한국어류학회 2021 韓國魚類學會誌 Vol.33 No.2

본 연구는 국립공원 내 생태계교란 어종 배스와 블루길의 도입에 따른 영향을 파악하기 위해 2020년 금계지, 삼가지, 내장지에서 조사를 실시하였다. 금계지에서는 7과 11종 1,221개체가 채집되었고, 배스는 우점종 (96.3%), 블루길은 소수 (0.3%) 서식하고 있었고, 배스는 주로 밀어 (IRI, 37.2%)와 잠자리목(25.6%), 뱀잠자리목 (11.6%), 배스 (7.0%) 등을 섭식하였다. 삼가지에서는 5과 10종 854개체가 채집되었고, 배스는 우점종(60.8%)으로 주로 새우류 (33.6%)와 잠자리목 (34.4%), 밀어(21.2%), 피라미 (6.1%) 등을 섭식하였다. 내장지에서는 7과 13종 1,075개체가 채집되었고, 블루길은 우점종 (38.1%), 배스는 우세종 (9.5%)으로 나타났으며, 블루길은 주로 물벼룩류 (IRI, 77.5%)와 파리목 (9.8%), 새우류 (4.0%) 등을 섭식하였고 배스는 주로 밀어 (73.3%)와 새우류 (21.2%) 등을 섭식하였다. 금계지와 삼가지의 배스는 10여 년 전에 도입된 것으로 추정되고, 도입 이후 대부분의 어류는 개체수가 급격히 감소하였다. 내장지의 블루길은 20여 년 전에 도입된 것으로 추정되며, 도입 이후 상대풍부도가 점점 증가하여 40%대에 도달하였고, 배스는 5~6년 전에 도입되었고 도입 이후 자생 어류의 종수와 개체수가 급격히 감소하였다. 마지막으로 국립공원 내 배스와 블루길의 서식현황 및 관리방안에 대해서 논의하였다. This study was conducted to elucidate the impact of invasive species, Micropterus salmoides and Lepomis macrochirus in Geumgyeji, Samgaji and Naejangji reservoirs of National Parks, Korea in 2020. In the Geumgyeji, 1,221 individuals of 11 species in 7 families were collected including M. salmoides (relative abundance, 96.3%) and L. macrochirus (0.3%), M. salmoides fed mainly on Rhinogobius brunneus (IRI, 37.2%), Odonata (25.6%), Megaloptera (11.6%), and M. salmoides (7.0%). In the results of Samgaji showed that 854 individuals of 10 species in 5 families were collected including M. salmoides (60.8%), and M. salmoides fed mainly on Decapoda (shrimp, 33.6%), Odonata (34.4%), R. brunneus (21.2%), and Zacco platypus (6.1%). In the Naejangji showed that 1,075 individuals of 13 species belonging to 7 families were collected including L. macrochirus (38.1%) and M. salmoides (9.5%), and L. macrochirus fed mainly on Branchiopoda (77.5%), Diptera (9.8%), Decapoda (4.0%) and M. salmoides fed mainly on R. brunneus (73.3%), Decapoda (21.2%). M. salmoides of Geumgyeji and Samgaji were apparently introduced more than a 10 years ago. The fish population declined rapidly since the introduction of M. salmoides. L. macrochirus of Naejangji was introduced more than 20 years ago, which increased its relative abundance to 40%. M. salmoides was introduced five to six years ago, and the fish species and population declined rapidly since the introduction of M. salmoides. Finally, we discussed the inhabitat status and management of M. salmoides and L. macrochirus in the National Park.

류마티스 관절염에 대한 한약의 면역학적 연구동향

최도영,이재동,백용현,이송실,유명철,한정수,양형인,박상도,유미현,박은경,박동석,Choi, Do-young,Lee, Jae-dong,Back, Yong-hyeon,Lee, Song-shil,Yoo, Myung-chul,Han, Chung-soo,Yang, Hyung-in,Park, Sang-do,Ryu, Mi-hyun,Park, Eun-kyung,Park, 대한침구의학회 2004 대한침구의학회지 Vol.21 No.4

Objective : Rheumatoid arthritis is an autoimmune disease that pathogenesis is not fully understood and one of the most intractable musculoskeletal diseases. The concern in the immunopathogenesis of rheumatoid arthritis has been increased since 1980's and many immunotherapeutic agents including disease-modifying antirheumatic drugs (DMARDs) were developed and became the mainstay of treatment of rheumatoid arthritis. However, the cure of the disease has hardly been achieved. In oriental medicine, rheumatoid arthritis is related to Bi-Zheng(痺證), that presents pain, swelling, andlor loss of joint function as major clinical manifestations, and also known to be deeply involved in suppression of immune function related to weakness of Jung-Ki(正氣). The herbal medicine, empirically used, could be a potential resource of development of new immunotherapeutic agents for rheumatoid arthritis. Methods : We developed a search strategy using terms to include "rheumatoid arthritis and herbal medicine" combined with "Chinese medicine" and/or "Oriental medicine". The search was focused on experimental studies of herbal medicine (January 1999 to May 2004), which is known to have effects on immune function of patients with rheumatoid arthritis. Computerized search used Internet databases including KISS and RISS4U (Korea), CNKI (China), MOMJ (Main Oriental Medicine Journal, Japan), and PubMed. The articles were selected from journals of universities or major research institutes. Results : The literature search for experimental studies on effects of herbal medicine on immunity of rheumatoid arthritis retrieved a total of 21 articles (Korea; 8, China ; 12, Japan ; 1). Of 21 articles, 10 were related to single-drug formula, 2 to drug interaction, and 9 to multi-drug formula. Single-drug formula was mainly used for aqua-acupuncture and researches on active components. Studies of drug interaction emphasized harmony of Ki-Hyul(氣血) and balance of Han-Yeul(寒熱). Multi-drug regimen was mainly found among formulas for Bo-Ki-Hyul(補氣血) and Bo-Sin(補腎). Conclusion : Studies on rheumatoid arthritis were performed both in vitro and in vivo in vitro study, LPS-stimulated splenocytes and synoviocytes were treated with herbal medicine, resulting in proliferation and activation of immune cells and suppression of cytokine activities in vivo study CIA animal model demonstrated that herbal medicine decreased antibody production and improved function of immune cells. In cellular and molecular study herbal medicine showed profound effects on the level of mRNA expression of certain cytokines related to immune function. This study revealed that herbal medicine has significant immune modulatory action and could be used for recovery of immune dysfunction of rheumatoid arthritis patients.

Ephedrine이 Motor Fitness에 미치는 영향

박장평,주왕기,이철규,한상준 江原大學校附設體力硏究所 1976 江原大學校附設體育科學硏究所論文集 Vol.- No.1

Twenty-five ㎎ of ephedrine of its matching placebo was administered to 200 male collegians for the study of the effects of ephedrine on motor fitness(10m shuttle-run, chinning, running broad jump and target throwing). Ephedrine improved motor fitness by 1% to 5% in the low group, but statistical analysis showed no significance in the high group. And in the case of target throwing the effect of placebo was a little more than ephedrine both in the low group and in the high group.

내시경을 이용한 관골궁골절 정복술

박대환,이재욱,장경수,송철홍,한동길,안기영 大韓成形外科學會 1998 Archives of Plastic Surgery Vol.25 No.1

Although the zygomatic arch can be employed as a key landmark to the accurate alignment of a displaced zygoma fracture, it has been traditionally avoided because of the need for a bicoronal incision. Exposure of the zygomatic arch by means of the conventional bicoronal incision has several possible disadvantages, including an increased risk of blood loss, alopecia, loss of sensation posterior to the incision, and traction palsy of the facial nerve. Endoscopic-assisted exposure of a zygomatic arch can largely obviate the disadvantages of a bicoronal incision and yield this site accessible to reduction and internal fixation in the routine treatment of displaced zygoma fractures. 9 cases of endoscope-assisted open reduction of zygomatic arch fracture and 3 cases of internal fixation of a moderately displaced zygoma fracture are presented. To accomplish this technique, a rigid 4 mm, 30 degree down-angled endoscope, trocar and cannula, endoscopic forehead lift instrument were used. The postoperative courses were satisfactory with few complications. The use of endoscope in the treatment of zygoma reduction provided an expanded field of vision, direct manipulation of lesions, minimal postoperative scar. In particular, exposure and fixation of the zygomatic arch were performed without the need for a bicoronal incision.

MRP II 시스템의 適用方案에 관한 硏究

朴徹敏,梁漢洙 慶南大學校 産業經營硏究所 1989 産業經營 Vol.12 No.-

사비의 교정에 있어서 내시경의 이용

박대환,김태모,이재욱,송철홍,한동길,안기영 大韓成形外科學會 1998 Archives of Plastic Surgery Vol.25 No.1

Owing to the complexity of the deviated structures and the septal deformities accompanying the external nasal deformities, the complete correction of the deviated nose is regarded as a difficult one. The approach to the nasal bone and osteotomy in classic corrective rhinoplasty is almost blind technique, where the results depends on the feeling by surgeon's hand. To overcome these drawback, endoscopic-assisted corrective rhinoplasty and septoplasty performed for 8 cases of deviated nose between January 1996 and May 1997. Average follow-up period was 10 months. All patients were evaluated by symmetrical nasal pyramid, recurrence of the bony deflection and septal deviation. The postoperative courses were satisfactory in most of cases with few complications. It appears that endoscopic control during corrective rhinoplasty and septoplasty is a big step toward obtaining better results in bony and cartilage resection with extreme precision under monitor control and magnification. This technique is not an open approach but permits one to see more of the nasal skeleton and bony septum what is causing deformity, and the immediate effect of the corrective measures used. The use of endoscope in corrective rhinoplasty will provide expanded field of vision, direct manipulation of lesions, and better aesthetic an6 functional results.

생태적 개념을 도입한 환경친화적 건축 재료 구현에 관한 연구

한성원,박철민 제주대학교 공과대학 첨단기술연구소 2005 尖端技術硏究所論文集 Vol.16 No.2

Environment Friendly architecture, which will reduce shortcomings of current architectural culture, can be achieved by using natural energy and environment friendly building materials together with their environmental architecture techniques. Particularly, even though the overall building system is perfect, it cannot be considered as comfortable architectural space if the materials are polluted, harmful to human bodies and producing wastes. Therefore, in order to build environment friendly architecture, the selection of the materials is very important and necessary from the planning stage with careful reviews and concern. This study tries to define what the environment friendly materials are, to investigate and to classify them, in order to provide some guidelines for selecting them at plans to build. For example, the materials can be classified into natural materials, continuously usable materials, recycled materials from wastes, and less polluting materials mixed with natural matters. Finally, this study reviews the existing products in the market and proposes to develop new ones in the future. It will present the circulation of resources in the 21 century throuth recycled and reused materials.

藥物로 因한 腎障碍

朴漢喆 大韓法醫學會 1981 대한법의학회지 Vol.5 No.1

The kidneys are vulnerable to various hparmacological and chemical agents. There are a number of reasons for this. The kidneys receive about 20% of the total body blood flow, a large volume per gram of tissue, and thus they are exposed to circulating toxic substances more than any other organs. By transcellular transportation, the renal tubules handle a large amount of substances, electrolytes and chemical solutes including toxic agents. High oxygen requirement of the proximal tubules makes this part of the organ highly sensitive to anoxiainducing agents. The kindney also has an efficient countercurrent system and some chemicals are highly concentrated at the papillary tips of the renal medulla. The kindneys also provide with sites for immune reactions and also contain immunologically active cells. Drug-induced allergic vascullitis, acute and chronic interstitial nephritis, immune complex mediated or anti-glomerular basement glomerulonephritis are reported in animal models and in human cases. Manifestations of drug induced nephropathy are various. These include; 1) Acute tubular necrosis 2) Obsrtuctive urophropathy 3) Acute intersitial nephtitis 4) Chronic intersitial nephritis 5) Proteinuria, nephrotic syndrome, and glomerulonephritis 6) Change in concentration/dilution mechanism, Change in acid-base blance In the follwing, major drugs and related nephropathies are discussed.

정신과 입원 치매 환자의 원인분석

박종한,정철호,김정휘 大韓神經精神醫學會 1987 신경정신의학 Vol.26 No.2

저자들은 58명의 정신과 입원 치매 환자들에서 치매의 원인 질환들을 조사하여 중요한 소견들을 다음과 같이 요약한다. 1) 치매 환자의 남녀비는 약 4대 1이었다. 2) 주요 원인들로는 주정성 치매(24.1%), 외상성 치매(24.4%), Alzheimer형 치매(13.8%), 산소결핍후 뇌증(12.1%)등이었다. 3) 청년층에서는 외상성 치매, 장년층에서는 주정성 치매, Alzheimer형 치매, 외상성 치매등이 중요한 원인들이었으나 노년층에서는 특별히 많은 원인 질환을 언급할 수 없었다. 4) 우울성 가성치매와 산소 결핍후 뇌증을 제외한 기타의 원인 질환들은 남자들에서 훨씬 많았다. Fifty-eight DSM-III dementia patients who were consecutively admitted to a psychiatric ward in Keimyumg Univ. Hospital were etiologically analyzed. Important findings of the analysis were; 1) Male to female ratio was approximately 4 to 1. 2) The important causative diseases were alcoholic dementia(24.1%), post-traumatic dementia(22.4%), dementia of Alzheimer's type(13.8%), and post-anoxic encephalopathy(12.1%). 3) Post-traumatic dementia was the most frequent cause of dementia in young adulthood, and alcoholic dementia, dementia of Alzheimer's type and post-traumatinc dementia were frequent in middle adulthood, while it was difficult to document specially frequent causative diseases in the old age. 4) Among various causative diseases, all but depressive pseudodementia and post-anoxic encephalopsthy were more prevalent in males.