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블라스트와 쇼트피닝이 Al 7075-T6의 피로특성에 미치는 효과에 관한 연구
정성균,조연희,김태형,이재헌 서울産業大學校 2002 논문집 Vol.53 No.1
In this paper, the effects of blasting and shot peening on the fatigue characteristics of Aluminium 7075-T6 alloy are studied. Three types of specimens, such as normal specimen, blasted specimen and shot peened specimen were used to get the experiment results. Rotary bending fatigue test machine was used to obtain the results, The experimental results show that the fatigue life and the fatigue strength were improved by shot peening, However, the fatigue life and the fatigue strength were increase a little bit by blasting.
Yon-Cheong Wong,Cheng-Hsien Wu,Li-Jen Wang,Huan-Wu Chen,Being-Chuan Lin,Chen-Chih Huang 대한영상의학회 2013 Korean Journal of Radiology Vol.14 No.1
Objective: To compare the ancillary CT findings between superior mesenteric artery thromboembolism (SMAT) and superior mesenteric vein thrombosis (SMVT), and to determine the independent CT findings of life-threatening mesenteric occlusion. Materials and Methods: Our study was approved by the institution review board. We included 43 patients (21 SMAT and 22 SMVT between 1999 and 2008) of their median age of 60.0 years, and retrospectively analyzed their CT scans. Medical records were reviewed for demographics, management, surgical pathology diagnosis, and outcome. We compared CT findings between SMAT and SMVT groups. Multivariate analysis was conducted to determine the independent CT findings of life-threatening mesenteric occlusion. Results: Of 43 patients, 24 had life-threatening mesenteric occlusion. Death related to mesenteric occlusion was 32.6%. A thick bowel wall (p < 0.001), mesenteric edema (p < 0.001), and ascites (p = 0.009) were more frequently associated with SMVT, whereas diminished bowel enhancement (p = 0.003) and paralytic ileus (p = 0.039) were more frequent in SMAT. Diminished bowel enhancement (OR = 20; p = 0.007) and paralytic ileus (OR = 16; p = 0.033) were independent findings suggesting life-threatening mesenteric occlusion. Conclusion: The ancillary CT findings occur with different frequencies in SMAT and SMVT. However, the independent findings indicating life-threatening mesenteric occlusion are diminished bowel wall enhancement and paralytic ileus.
Watch Out for the Early Killers: Imaging Diagnosis of Thoracic Trauma
Wong Yon-Cheong,Wang Li-Jen,Kaewlai Rathachai,Wu Cheng-Hsien 대한영상의학회 2023 Korean Journal of Radiology Vol.24 No.8
Radiologists and trauma surgeons should monitor for early killers among patients with thoracic trauma, such as tension pneumothorax, tracheobronchial injuries, flail chest, aortic injury, mediastinal hematomas, and severe pulmonary parenchymal injury. With the advent of cutting-edge technology, rapid volumetric computed tomography of the chest has become the most definitive diagnostic tool for establishing or excluding thoracic trauma. With the notion of “time is life” at emergency settings, radiologists must find ways to shorten the turnaround time of reports. One way to interpret chest findings is to use a systemic approach, as advocated in this study. Our interpretation of chest findings for thoracic trauma follows the acronym “ABC-Please” in which “A” stands for abnormal air, “B” stands for abnormal bones, “C” stands for abnormal cardiovascular system, and “P” in “Please” stands for abnormal pulmonary parenchyma and vessels. In the future, utilizing an artificial intelligence software can be an alternative, which can highlight significant findings as “warm zones” on the heatmap and can re-prioritize important examinations at the top of the reading list for radiologists to expedite the final reports.
축산물 및 가공 : 말고기의 육질 등급에 따른 부위별 일반성분, 이화학적 특성 및 지방산 성분 비교
정진형 ( Jin Hyung Cheong ),선창완 ( Chang Wan Sun ),황도연 ( Do Yon Hwang ),권기문 ( Ki Mun Kwon ),이재청 ( Jae Cheong Lee ),김효선 ( Hyo Sun Kim ),김용준 ( Young Jun Kim ),이상근 ( Sang Kun Lee ),류연철 ( Young Chul Ryu ) 한국동물자원과학회(구 한국축산학회) 2013 한국축산학회지 Vol.55 No.3
본 연구는 말고기 응급(1등급과 2등급)에 따른 품질을 비교하여 향후 부위별 및 등급별 구분 판매시 등급간 육질 특성의 기초자료로 활용하기 의해 이화학적, 관능적, 지방산조성 분석을 실시하였다. 등심에 대한 일반성분분석 결과에서는 1등급이 2등급에 비해 높은(p<0.05) 조지방 함량을 보인 반면, 전단력은 1등급이 5.87(kg/cm²)으로 2등급 10.86(kg/cm²)에 비해 유의적으로 낮았다 (p<0.05). 육질등급별등심, 목심, 넓적다리에 대한 보수력 측정결과 등급간 및 부의간에 유의적 차이가 없었고(p<0.05), 육색에 대한 육질등급별 부위간 비교에서는 L* 값, a* 값 및 b*값에서 차이가 없었으나, 2등급의 경우 등심, 목심, 넚적다리의 L*, a* 및 b* 값은 유의적 차이가 있는 것으로 나타났다(p<0.05). 지방산 조성에 대한 분석결과 등심에서 palmitoleic acid (C16:1)는 1등급이 11.39%, 2등급이 5.36%으로 1등급이 2등급에 비해 유의 적으로 높았다 (p<0.05). 반면 stearic acid(C18:0)는 1등급이 2등급에 비해 유의 적으로 낮게 나타났으나(p<0.05), oleic acid(C18:1)는 등급간에 유의적 차이(p<0.05)가 없는 것으로 나타났다. 관능검사결과 육질 등급간에는 전체적인 기호도는 유의적인 차이가 없는 것으로 나타났다(p<0.05). 이상의 결과에서 냉동된 말고기의 육질 1등급과 2등급에서는 조지방 함량, 전단력, palmitoleic acid (C16:1)와 stearic acid(C18:0)는 등급별 육질을 판별할 수 있는 요소로 이용이 가능할 것으로 사료된다. 또한 품질을 향상시키고 부위 및 등급에 따른 차별화를 위해서는 40개월 이상의 장기간 사육은 바람직하지 않을 것으로 사료된다. The objective of this study was to investigate the physical and chemical composition, fatty acid profile and sensory property of horse meat according to meat quality grade (1 and 2) and cuts (loin, chuck roll and top round). The lipid content of loin was significantly higher (p<0.05) in grade 1 (4.65%) compared with grade 2 (2.31%), whereas moisture content was lower (p<0.05) in grade 1 than in grade 2. The pH value was significantly lower (p<0.05) in loin than in other cuts regardless of meat quality grade. Shear force value of loin was significantly different (p<0.05) between grades 1 (5.87kg/cm²) and 2 (10.86kg/cm²). Water-holding capacity values of loin, chuck roll and top round were not different (p<0.05) between grades 1 and 2. Meat color values (L*, a* and b*) of loin, chuck roll and top round were not different (p<0.05) between grades 1 and 2. Palmitoleic acid of loin in grade 1 (11.39%) was higher (p<0.05) than that in grade 2 (5.36%). Stearic acid of loin in grade 1(3.58%) was lower (p<0.05) than that in grade 2(7.02%). Overall palatability of loin, chuck roll and top round did not differ (p<0.05) between grades 1 and 2. Therefore, meat quality grade had mainly affected lipid and moisture contents, shear force, palmitoleic acid and stearic acid of horse loin; and horse loin of grade 2 had lower pH and higher L*, a* and b* than the other cuts.
김연,정숙회 인제대학교 1994 仁濟醫學 Vol.15 No.2
본 연구는 정상인 집단과 정신분열증 환자집단의 MMPI 반응에서 긍정왜곡에 관한 차이를 알아보기 위한 것으로 329명의 정상군과 110명의 정신분열증 환자군의 MMPI의 결과를 비교하였다. 정상군과 정신분열증 환자군의 긍정왜곡 반응은 통계적으로 유의한 차이를 보이지 않았다. The present study attempted to detect the difference between the normal group and schizophrenic patient group, in faking-good attitude in MMPI responses. Four hundred thirty none subjects were selected and administered the MMPI. The results of 329 normal group were compared to 110 schizophrenic patients. The result reveals the normal group did more faking-good than the schizophrenic group but not significant statistically. On the other hand when L equals or excells 9, K equals or excells 17 and F-K is less than -11, the two groups showed a great difference among the clinical scales, that is, the scale of psychopathic deviates at the significant level P<.05, the scales of psychasthenia, schizophrenia and social introversion at the significant level P<.001. It is recommended that the clinical scales should be used in diagnosing neuropsychiatric diseases.
이대연 ( Dae Yon Lee ),백정민 ( Cheong MIn Paik ),김종극 ( Jong Guk Kim ),한상인 ( Sang In Han ) 대한내과학회 1973 대한내과학회지 Vol.16 No.11
A case of systemic lupus erythematosus was reported and recent literatures were reviewed. The patient was a 15-year-old Korean middle-schoolgirl who was admitted to this hospital on June 23, 1973 with chief complaints of generalized edema, headache, skin l