혼합운동이 중년여성들의 신체구성 및 혈액성분에 미치는 영향

서영환,임재용,임달식 朝鮮大學校 스포츠科學硏究所 2007 스포츠科學硏究 Vol.18 No.-

This research of got result following conclusion that observe that some change appears in body composition and blood component etc, when executed muscular power exercise between 8 weeks and composition exercise of jogging to forty to fifty years women who this research does not take part in regular exercise

화학환원법을 이용한 Ag 나노분말의 합성

서원식,김태환,성재석,송기창 한국화학공학회 2004 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.42 No.1

화학환원법을 이용하여 AgNO_(3) 수용액에 환원제를 첨가시키는 방법으로 Ag분말을 제조하였으며, 이 과정 중 환원제의 종류 변화(N_(2)H_(4), NaBH_(4))가 얻어진 분말의 특성 변화에 미치는 영향을 살펴보았다. 또한 분말합성 과정 중 계면활성제(Tween20)를 수용액에 첨가하여 계면활성제가 분말의 특성에 미치는 영향도 살펴보았다. 제조된 분말의 SEM 측정결과 환원제로 sodium borohydride(NaBH_(4))를 사용하면서 제조된 Ag 분말의 크기는 약 0.3㎛인 반면 hydrazine(N_(2)H_(4))을 사용하여 제조된 분말의 크기는 약 1㎛로 sodium borohydride를 사용해 제조한 분말의 크기가 더 작고 고른 크기 분포를 보였다. 또 환원제로써 hydrazine을 사용시 계면활성제를 첨가하여 제조된 Ag 나노분말의 크기는 50nm정도로 계면활성제를 첨가하지 않고 제조된 분말보다(1㎛) 입자의 크기가 더 작고 균일한 입도 분포를 나타내었다. Silver powders were prepared by chemical reduction method using reductants in AgNO_(3) aqueous solution. The effect of the type of reductants(N_(2)H_(4), NaBH_(4)) was investigated on the properties of the obtained powders. In addition, the effect of the addition of asurfactant(Tween 20) during particle synthesis was studied. The Ag powders prepared using the sodium borohydride as a reductant were found to be 0.3㎛ in particle diameter, while those using the hydrazine showed 1㎛ in particle diameter. The mean particle size of Ag nanopowders, prepared by the addition of Tween 20 as a surfactant, was 50㎚, which is smaller than 1㎛ powders formed without the surfactant.

내용기반 이미지 검색 시스템에 대한 고찰과 설계 요건에 대한 연구

서재현,서상환,김흥식 인제대학교기초과학연구소 1998 자연과학 Vol.2 No.-

멀티미디어 데이터베이스의 내용기반 검색은 색인 기술을 요구한다. 전통적인 데이터베이스와는 달리 데이터 항목은 기본이 되는 데이터 타입들의 속성의 집합으로 나타내어지는데, 멀티미디어 데이터베이스에 있는 멀티미디어 객체는 특징들의 수집에 의해 표현되고, 객체 내용의 유사성은 문맥과 참조의 프레임에 의존하며, 객체의 특징은 다중양식 특징 측정에 의해 특성화된다. 내용기반 이미지 검색을 단계별로 3가지 큰 작업으로 나누어 보면 해당 이미지를 가장 정확하게 특징들을 추출하는 단계와 그 추출된 특징을 효과적이고 능률적으로 저장, 검색을 지원하는 단계와 다시 이미지의 유사성을 검출해 내는 단계로 요약된다. 본 논문에서는 기존에 연구된 이미지 특징 추출들을 연구 분석하고 이미지 내용 기반 검색에 적합한 다양한 특징 추출과 유사도 검색에서의 문제점과 이에 대한 적합한 설계요건에 대해 제시한다. Content-based retrieval of multimedia database calls for content-based indexing techniques. Different from conventional databases, where data items are represented by a set of attributes of elementary data types, multimedia objects in multimedia databases are represented by a collection of features; similarity of object contents depends on context ad frame of reference; and features of objects are characterized by multimodal feature measures. Try to divide content-based images retrieval systems into three large operation, it is consist of the following three phases; extracting features that can represent images the most exactly, storing the extracted features effectively and efficiently and support retrieval, detect similarity of images. In this paper we first investigated and analyse the existing image feature extraction methods and various features extraction that adequate for content-based image retrieval and problem of similarity retrieval, we also present design of suitable demand.

연합대학으로의 대학 체제 변화에 관한 연구

서재천,서강식,조붕환,지옥화,장원순 공주교육대학교 2010 公州敎大論叢 Vol.47 No.1

본 연구는 교육과학기술부의 경쟁력있는 국립대학을 만들고자 시행하고 있는 여러 정책 중 연합대학으로의 체제 변화 권유에 대한 장단점과 이해득실을 냉철하게 객관적으로 고찰해 보고자 수행되었다. 연구의 수행방법은 연합대학 체제의 추진이나 독자생존의 길 등 의사결정에 참고자료가 될 수 있도록 일본과 미국 등 외국의 연합대학 사례를 중심으로 수집 가능한 자료를 수집하여 고찰한 후 연합대학 체제 추진이나 독자생존의 장단점을 알아보았다. 본 연구의 결과는 여러 가지 외적인 상황 속에서 우리 대학이 독자적으로 생존하는 것이 가능한가, 또는 결국에는 독자적 생존의 대안으로 연합 내지는 통합의 길을 선택할 수밖에 없는가 하는 것은 그 누구도 쉽게 예단하기 어렵다는 것이다. 그러나 대학 구성원들이 미래를 선택하지 않는다 하더라도 외적인 요인에 의해 미래가 결정될 여지가 있으므로 지금부터라도 대학의 미래에 관한 공동의 지혜를 모아야 할 것으로 생각한다. 함께 머리를 맞대고 허심탄회하게 서로의 의견을 존중하며 서로에 대한 불신을 털어버리고 진정 대학의 미래를 위한 바른 선택이 무엇인가에 관한 논의와 연구가 꾸준하게 지속되어야 할 것으로 판단된다. This study was carried out in order to try to consider objectively merits and demerits regarding a system change invitation toward the Union University System and understanding gains and losses during a lot of policies to make a national college that there was competitiveness of Ministry of Education, Science and Technology of education. The results of this study is that no one is easy to predict, that it does as alternatives of an independent survival or select a street of integration and the Union University System in various external situations, finally. However, the University members does not select the future even if in various external factor because there is no doubt that the future will be decided from now on any University in the future regarding collaborative wisdom of the university, We thought it was going to do. Head with open-minded to respect each other's opinions and distrust each other confide you discard the truly University for the future, select the right to discuss and research can be sustained.

특이한 악관절 강직증 : 진성 악관절 강직증과 상악골과 하악골 사이의 골성 유합

서재훈,조세인,여환호,이기혁,김영균 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.2

TMJ ankylosis is classified with true and false type. A true ankylosis is defined as any condition that produces fibrous or bony adhesions between the articular surfaces of the temporomandibular joint. The main causes of true ankylosis are trauma or infection. A false ankylosis results from pathologic conditions outside the joint that limit mobility of the mandible such as myogenic disorders, coronoid impingement or rare direct bony fusion between maxilla and mandible. The treatment of choice of TMJ ankylosis is surgical intervention. We experienced the male patient with complete mouth opening limitation since 45 years before. This patient has true TMJ ankylosis and rare bony synostosis between maxilla and mandible in the right posterior region. We performed surgical intervention and had a favorable result.

악성종양과 감별이 어려웠던 악안면 영역의 감염질환에 대한 치험례

서재훈,김영균,여환호 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.3

It is very difficult to differentiate the malignant tumor from the maxillofacial infections that have unclear cause, severe indurated swelling, pain and nonresponsiveness to antibioitic treatment and incision and drainage. Incisional biopsy, CT, and MRI examination may not distinguish between infection and a malignant tumors. And then, the clinicians can make a mistake that they perform a unnecessary radical surgery because of inaccurate diagnosis. We present three case reports of maxillofacial infectious disease with diagnosis process, treatment and differential diagnosis. The infectious disease were not resolved with antibiotic and surgical drainage. The progression of clinical sign and radiographic, indings of these disease were masqueraded as malignant tumors.

인천지역 강하분진의 발생특성에 관한 연구

박경환,서광석,민달기,장재선,김종규 京畿專門大學 1994 京畿專門大學 論文集 Vol.- No.22

Spirometra erinacei의 發育에 따른 Alkaline phosphatase와 Lactate dehydrogenase의 酵素 組織化學的 硏究

朴裁弘,徐淑才,金昌煥 慶尙大學校 기초과학연구소 1990 基礎科學硏究所報 Vol.6 No.-

Spirometra erinacei의 제3기 유충 plerocercoid(Sparganum)를 전이숙주인 흰쥐와 종숙주인 고양이에 감염시켜서 회수한 sparganum과 성충의 alkaline phosphatase와 lactate dehydrogenase(LDH)의 분포 및 동위효소 pattern을 비교하기 위하여 효소조직 화학적 방법과 전기영동법을 이용하여 다음과 같은 실험 결과를 얻었다. 1. Alkaline phosphatase는 sparganum과 성체의 표피층과 표피근층에서 많은 분포를 보였으며 실질근층에도 상당한 분포가 있었다. Isozyme band pattern은 sparganum에서 2개 성체에서 4개가 분리 되었는데, sparganum과 성체 모두 2번 band가 major band였다. 2. LDH는 sparganum의 표피근층과 성체의 표피근층에 많이 분포되었고, sparganum의 실질근층과 표피층에는 거의 분포되지 않았다. LDH의 isozyme band pattern은 sparganum과 성체에서 각각 1개의 band가 분리되었다. This study was performed to investigate distribution and isozyme band pattern of Alkaline phosphatase and Lactate dehydrogenase on developing Spirometra erinacei (sparganum, adult) recovered from sparganum infected rats and cat. The result obtained were as follows ; 1. Alkaline phosphatase had a strong activity in the tegument and the epidermal musculature of sparganum and of adult, but no detectable level in the parenchymal musculature. 2. Two and four Alkaline phospatase isozyme bands were found in sparganum and adult respectively. of these bands, band 2 was major band in sprarganum and adult. 3. The high activity of Lactate dehydrogenase was found in the tegument and epider mal musculature of adult and epidermal musculature of sparganum, but no detctable level in tegumemt and parenchymal musculature of sparganum. 4. Only one lactate dehydrogenase isozyme band was detectable in sparganum and adult.

캔터키 블루그래스에 의한 잔디 조성 기술 개발

이재필,조용인,서한용,이상재,김태준,한인송,김두환 建國大學校附設農業資源開發硏究所 2001 農資源開發論集 Vol.23 No.-

Seed sowing is the major method for the establishment of cool-season grasses at the soccer fields, golf courses, etc. Germination speed of kentucky bluegrass(Poa prantensis L.: KB) is much slower than the other cool-season grasses. This study was conducted to solve the problems at the early stage of establishment with KB. The best priming conditions of KB, drying method after soaking in the water, and covering materials will be selected. To reduce irrigation frequency and quantity for seed germination, seeds of KB were exposed to the different soaking temperature(4, 20, 25, 30℃). soaking durations(3, 6, 10, 13, 19, 23 days), storage periods(3, 6, 9 days), storage humidities(30, 50, 100%), shading rate(0, 50, 100%), drying methods(dry in the air, heating, mix soaked seed with profile=1:2), and covering materials(70% shade net, fiber net). The optimum soaking temperature and duration for the seed priming of KB were 20℃ and 10 days, respectively. The optimum storage period and humidity were 3 days and 100%, respectively, Under 50% shading, germination rate was the highest. In drying method after soaking, mixture of seeds and profile(1:2) was optimum for sowing. Using the thin fiber net as covering material after sowing was good for not moving seeds and improved germination speed and rate.

Stevens-Johnson 증후군: 증례보고 및 문헌고찰

여환호,김영균,서재훈 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.1

The Stevens-Johnson syndrome is a severe form of erythema multiforme associated with multiple organ involvement that can result in severe mortality. There are many etiologic factors including drugs, infection, or stress ; but accurate pathogenesis is still obscure. Treatments are composed of the removal of possible etiologic factors, symptomatic and supportive treatment. We experienced a case of Stevens-Johnson syndrome with involvement of generalized skin, oral mucosa, and eye involvement. This patient was treated by symptomatic and preventive method including corticostervid, antihystamine, and opthalmic treatment.