超音波 硏削에 依한 화인 세라믹스의 加工性能에 關한 硏究

文秉秀,金聖淸,南丞炫 충북대학교 산업과학기술연구소 2002 산업과학기술연구 논문집 Vol.16 No.1

The fine ceramics are very difficult to grind to get high efficiency because they have not only high strength and brittleness but also high hardness. In this study, the ultrasonic grinding set-up that is operating by milling machine with attaching special device has been developed to get efficient machining of fine ceramics having wear resistance and brittle material. The following results through the experiment for various grinding conditions by the ultrasonic grinding are obtained. 1. Both the ultrasonic and the conventional grinding have 4 times better the grinding resistance value in horizontal direction than the vertical direction. 2. In case of table speed is low and grain size of diamond wheel is fine, the surface roughness is improved. But in case of grinding depth is increasing, the surface roughness is not improved because of increasing of grinding resistance and wornout of diamond wheel. 3. It could get high efficiency grinding effect by increasing grain size of diamond wheel. Also, it showed that tool wornout appears to be decreased than in case of conventional grinding under same condition.

피부와 외래환자와 일반인의 진균질환 역학조사

문현주,문재동,이지범,김성진,원영호,이승철 全南大醫大 2001 전남의대학술지 Vol.37 No.4

다발성 외상 후 횡문근융해증 환자에서의 손상초기 급성신부전의 예측인자

문중범,이강현,황성오,이진웅,한병근,최승옥,강성준 대한응급의학회 2001 대한응급의학회지 Vol.12 No.3

Background: Acute renal failure(ARF) is a serious complication of rhabdomyolysis after multiple trauma, and may increase morbidity and mortality. The aim of this study was to elucidate predicting factors for the development of ARF induced by rhabdomyolysis at an early stage of multiple trauma. Methods: This prospective, observational study was conducted at the emergency department of a level I trauma center. Patients with acute multiple trauma, whose plasma levels of creatine phosphokinase(CPK) were higher than 1,000 IU, were included in this study. We excluded patients with any history of myocardial infarction, stroke, underlying renal disease, and/or infectious disease. We collected clinical and laboratory data including age, heart rate, mean arterial blood pressure, injury severity score, serum myoglobin, lactic dehydrogenase, creating phosphokinase, and base excess. Collected data were compared between patients who had ARF and patients who did not have ARF. Results: Eighty-eight patients were enrolled in this study. Eighteen patients(20.5%) developed ARF. The injury severity score(ISS)(p=0.001), the base excess(p<0.001), CPK(p=0.003), and myoglobin(p<0.001) were higher in patients with ARF than in patient without ARF. Logistic regression analysis revealed that early predictors for ARF were high ISS, high base excess, high CPK, and high myoglobin. Conclusion: We could identify early predicting factors for acute renal failure induced by rhabdomyolysis, these factors included ISS, serum CPK and myoglobin, and base excess in the arterial blood gas analysis performed at the emergency department.

두가지 두부 방사선 사진 중첩 방법의 비교 : Nasion-Sella line 중첩과 Anterior cranial base 중첩 Nasion-Sella line method and Anterior cranial base method

문윤식,경승현 대한치과교정학회 1997 대한치과교정학회지 Vol.27 No.4

성장 또는 치료로 인한 악안면골의 변화는 두부 방사선을 중첩함으로써 판단할 수 있다. 중첩에 대한 평가는 중첩방법에 따라 변화되므로 좀더 정확한 중첩 방법을 선택하는 것은 치료 효과에 대한 분석이나 성장 변화에 대한 평가를 정확히 하는 선결 요건이 될것이다. 3년 정도의 비교적 짧은 성장기간을 가진 11세 전후의 여자환자 19면을 대상으로 가장 널리쓰이는 중첩방법인 Nasion-Sella line중첩과 Bjork가 주장하는 Anteirior cranial base(ACB)중첩을 비교하여 다음과 같은 결론을 얻었다. 1. Nasion-Sella line중첩과 ACB중첩은 중첩오차(registration error)의 크기가 거의 같아서 reliability에 있어서 큰 차이가 없는 것으로 나타났다. 2. 검사자간 차이(interobserver difference)에 있어서 Nasion-Sella line중첩은 7개의 측정 항목 모두에서 두 검사자간 차이가 없었으나 ACB중첩은 7개의 측정 항목중 4개의 측정 항목에서 두 검사자간 유의성 있는 차이가 나타났다. 3. 중첩방법의 차이(intermethod difference)에 있어서 Nasion-Sella line 중첩으로 계측치와 ACB 중첩으로 측정한 계측치가 유의성있게 차이가 나지 않았다. Spatial change of craniofacial structryes from growth or orthopedic force is usually evaluated by cephalometric superimpositions at different points in time. As the evaluation can be changed according to cephalometric superimposition method, selection for correct superimposition method is very important. Double registration of nineteen pairs of female lateral head films, their growth period is average 3.7years amd age is average 10.7 years, were performed by two observers. Comparisions was made between two methods and the results revealed the following; 1. NS line and ACB superimpositions are not markedly different in reliability due to almost same registration error of them. 2. The investigation was undertaken to examine interobserver difference. In ACB method, significant difference was revealed in 4 Measurements of 7 measurements was 3. In the investigation of intermethod difference, there is no significance between NS line and ACB superimpositions.

두부 외상 환자의 고혈당과 예후와의 상관관계

현석천,이종안,박준석,박상문,김갑득,장인성,김승열,송화식 대한응급의학회 1996 대한응급의학회지 Vol.7 No.2

Severe head injury is associated with a stress response that includes hyperglycemia, which has been shown to worse outcome during cerebral ischemia. To better define the relationship between head injury and hyperglycemia, admission glucose level were analyzed in 150 head injured patients from January 1995 to December 1995. Our retrospective study demonstrated a higher glucose level in patients with low Glasgow Coma Scale(GCS) score, especially at 3-5 GCS score, compared to those with high GCS scores. Also a higher glucose level was noted in patients with vegetative state and dead than in those with good recovery and moderate disability. Hyperglycemia(serum glucose level≥200mg%) was associated with decreased level of consciousness and a poor outcome. We conclude that admission hyperglycemia is a significant indicator of severity of injury(p<0.001), but not significant predictor outcome from head injury. After controlling for the influence of the GCS score, glucose levels do not have an independent effect on outcome.

전문가 시스템기법에 의한 기계 가공 조립 공장의 최적 배치방법 연구

문기주,오현승 東亞大學校 附設 情報通信硏究所 1994 情報通信硏究所論文誌 Vol.2 No.1

설비배치는 공장의 신설이나 설비의 추가 도입시에 주로 필요로 하는 것으로써 빈번하게 발생하지 않는다는 점과 배치안 개발을 위해 만들어져 있는 기존의 방법들이 너무 이론적인 측면으로만 치우쳐 있기 때문에 현실 적용이 원활하지 아니하여 큰 주목을 받지 못한 분야였다. 그러나 근래의 생산형태가 다품종소량화 됨에 따라 차량부품의 생산등과 같은 기계적인 가공 및 조립을 행하는 공장들은 빈번한 생산제품의 변경에 따른 생산설비의 재배치를 자주 필요로 하게 되자 그 관심도가 높아지고 있다. 본 논문에서는 이런 요구에 부응하여 기계적인 가공 및 조립을 행하는 공장에서 설비배치시에 고려하고자 하는 요소들에 대한 관리자들이 느끼는 중요도에 따라 교체 대상 부서를 선정하고 교체 순서를 결정하여 교체해 나감으로써 최적 배치안을 탐색할 수 있는 방법을 제시하였다.

음악형상론 서설 : Musical Form as an 'Inter-subjective Liturgy' '상호주관성의 제의(祭儀)'로서의 음악형상

문승현 민족음악학회 2001 음악과 민족 Vol.21 No.-

Considering that the reaction of mind to exterior musical stimuli is more than a mechanical one, musical form is likely to have a specific subjective aspect of mind. In Confucian theory, it is defined as the 'emotional experience'of transcendental world. The conception of musical 'structure' is related to the organization of musical signs enumerated sequentially and therefore ex-timely, that are confirmed 'visually' on the score. The fact that 'memory' constitutes a musical structure in our mind from exterior sonic stimuli means that it takes time and brings it over to the spacial or visual dimension. By way of the memory itself, a musical work can become a 'text'. A specific objective matter systematically supplied from the exterior do not cause the corresponding systematic changes of mind. 'Structural listening' is just a partial aspect of musical appropriation. Musical appropriation is mostly likely to be the subjective and individual inspirations formed in our mind at every musical moment, and, if allowed, to be the scattered transcendental and cosmic responses of mind that are accumulated, then sedimented and subsisted in our consciousness. So musical form is more than the cognition of musical structure and it is founded upon the activity of mind which seems to be subjective and transcendental by its. nature. Supposing that musical form is more than the musical structure which is to be objective matter, and that it is rooted in the musical grammar which is to be communicative, we could presume the musical appropriation and the musical communication between human-beings would be achieved In the field of 'inter-subjectivity'; and it is likely to be an 'inter-subjective liturgy' that opens the entrance to the subjective or trancendental world.

飼料作物의 生育에 關한 調査 Ⅱ : 晉州地方을 中心으로 for Chinju Area

文勝式,金基元,鄭鉉承 진주산업대학교 1971 論文集 Vol.8 No.-

Sowing 6 Kinds of leguminous grasses 8 Kinds of forage grasses 6a ward of mixture grasses 20 kinds in total, I had bbserved them for 8 month (Marchs. 1970~ october 30 1970) and acquired the results as follow; 1. The growth of forage crops and mixture was well in good soil with plenty rainfall in moderate atmospherical condition. 2. The summer drought is sure in ladino clover alfalfa, birds foot trefoil, Perennial ryegrass, Timothy and Brome grass, The mixture ward is comparatively little. 3. The respective fresh yield of orchard grass, Red clover O+OL+B+R were 5,500㎏, 5,100㎏, 4,325㎏.

한우, 칡소 및 제주 흑우 Calpain-Calpastatin 유전자 다양성

이승환,김승창,조수현,최봉환,Aditi Sharma,임다정,당창권,장선식,김재환,고문석,양보석,강희설 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.2

The aim of study was to investigate genetic diversity for the calpain/calpastatin gene in three Hanwoo breeds [(Brown (n=62), Brindle (n=81) and Jeju Black (n=30)]. Random samples from three breeds of Hanwoo were selected and genotyped for the 7 SNPs of calpain/calpastatin using TaqMan method. Allele frequencies were investigated for CAPN1/CAST gene. Allele frequency of CAST2 SNP was 0.75, 0.59 and 0.22 for Brown, Brindle and Jeju black, respectively. The CAST3 revealed allele frequency of 0.59 and 0.57 in Brown and Jeju Black, while it showed very low allele frequency (0.07) in Brindle. In particular, favorable allele (G allele) for the CAPN1-2 SNP which was shown a strong association with tenderness in Taurine and Indicine cattle revealed 16% and 17% higher allele frequency in Brown Hanwoo (0.82) comparing Brindle (0.66) and Jeju Black Hanwoo (0.65). AMOVA demonstrated that among population variance occupied only 10% of total variance and among individual variance was 0%, while within individual variance was 90% of total variance. This result showed that population effect contributed very small portion of genetic to these three Hanwoo breeds, while within individual variance contributed large portion of genetic diversity within these Hanwoo breeds. In conclusion, three Hanwoo breeds (Brown, Brindle and Jeju black) showed a genetically homogeneous based on the 7 SNPs of CAPN1/CAST gene and it came from same ancestor to form modern Hanwoo breed.

전경대원에서 발생한 결핵의 임상 양상

문창기,박상준,조민구,김영중,김소연,김윤권,정준오,안석진,김은실,서승오,김지훈,최원제,이윤영,박형기,최규영,김현근 대한감염학회 2006 감염과 화학요법 Vol.38 No.6

Background: The purpose of this study was to document the incidence and clinical characteristics of patients with tuberculosis (TB) in combat and auxiliary police, living in a group, in Korea where the incidence rate of active TB in a general population is higher than in Western countries. Materials and Methods:We retrospectively reviewed the medical records of all tuberculosis patients diagnosed at National Police Hospital from January 2002 through December 2004. Results:In 2002-2004, a total of 156 cases of tuberculosis were identified with the mean (Standard deviation) age of 20.6 (±1.0) years. Of these, 134 (85.9%) patients were registered as new cases, 11 (7.1%) as relapse, 2 (1.3%) as failure, 5 (3.1%) as treatment-after-default cases whereas 4 (2.6 %) patients were not included in any categories. Average annual new TB rate and smear-positive TB rate were 86.5/10^(5) and 17.4/10^(5) person-years, respectively. In 12 of 31 smear-positive cases, time from onset of symptoms to diagnosis was more than 30 days. Two multidrug-resistance TB cases were identified and two suspected outbreak episodes of TB had occurred during 3 years. Conclusion:There was no statistically significant difference in the incidence rate of new cases of TB between the general population aged 20 to 29 years and combat and auxiliary police in Korea. 배경 : 국내 결핵의 발생은 감소 추세에 있으나 여전히 후진국형 발생양상을 보이고 있다. 특히 집단생활을 하는 젊은이들에서 발생하는 결핵의 유행이 간헐적으로 알려지고 있어 우려를 낳고 있다. 이에 저자들은 최근 전경대원의 결핵 발병 양상에 대해 알아보고자 본 연구를 시행하였다. 재료 및 방법 : 2002년 1월부터 2004년 12월까지 3년간 경찰병원에서 결핵 진료를 받은 전경대원의 의무기록을 후향적으로 분석하여 연도별 결핵 신환발생률, 도말양성결핵 신환율, 진단 지연, 집단발병, 다제내성결핵을 조사하였다. 결과 : 연도별 결핵 신환자 수(10만명당 발생추정치)는 2002년 50명(83.6명), 2003년 42명(83.7명), 2004년 42명(93.5명)이었고 도말양성 폐결핵 신환자 수는 2002년 10명(16.7명), 2003년 11명(21.9명), 2004년 6명(13.4명)이었다. 3년간 도말양성 폐결핵 환자는 31명이 있었고 그 중 12명은 호흡기 증상 발생 30일이 지나서 진단을 받았다. 다제내성 결핵은 2명이 있었으며 결핵의 집단발병이 의심되는 사례는 2차례 있었다. 결론 : 전경대원과 20-29세 연령군 일반인의 결핵 신환발생률, 도말양성 폐결핵 발생률의 통계적으로 유의한 차이는 없었다.