http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Jeong‑Han Lee,Ik‑Hyun Oh,Jun‑Ho Jang,Ju‑Hun Kim,Sung‑Kil Hong,Hyun‑Kuk Park 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.5
In this study, Al, Cr and Si fine powders were alloyed by planetary ball milling to investigate their microstructural evolution,following their mechanical alloying behavior. The formation of Al(Cr) supersaturated solid solution by the Cr grainsembedded in Al-matrix, which contributed substitutional structure is discussed in relation to their structural evolution inaccordance with the distortion of a crystal lattice. The compacts of Al–Cr–Si alloys were prepared by rapid sintering withina short time by dense consolidation above the density of 99.9% as the formation of intermetallics, except in the case of thedistribution of single-phases induced by the Al-melting. The formation behavior of intermetallics was dominated by dependenceon the structures of the milled-powder and subsequent sintering temperature. To estimate the consolidated behaviorsof compacts, various approaches derived from TEM and XRD analysis were taken to obtain microstructural evidences ofthe inter-diffusion, following the presence of thermally stable intermetallics.
Jeong‑Han Lee,Ik‑Hyun Oh,Jun‑Ho Jang,Ju‑Hun Kim,Sung‑Kil Hong,Hyun‑Kuk Park 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.3
The aim of this study is to investigate the structural evolution and mechanical properties of TiAlSiN coatings when processedby the arc ion plating method. To form a hard coating, Ti, Al, and Si powders were mechanically alloyed by planetary ballmilling; the powders were then densely compacted during a rapid sintering process into a ternary system coating, i.e. TiAlSi. The evolution of the structural phase from a powder to a compact material is dominated considerably by phase states suchas a supersaturated solid solution or intermetallic compounds. In the case of coating layers, the factors that determine thestructural evolution are associated with the phase stability of the nano-crystalline structure that in turn is associated withthe Ti/Al composition ratio. Motivated by this, we performed experiments to investigate the distribution of microstructures;the material’s binding energy, quantitative properties, transformation of crystal structure, and distribution of amorphous/crystalline were all recorded. In particular, the relationship between the physical and chemical properties during the coatingprocess is considered to be the dominant factor controlling the orientation and morphology of that zone (1, T, and 2). TheTiAlSiN coating layer was found to have hardness above 45 GPa and an adhesion above 100 N. In other words, understandingthe evolution and structure of TiAlSin helped us to produce a material with excellent properties that can be used as a hardcoating. Specifically, these properties were induced by a grain refinement of the nano-crystalline structure that correspondsto an increase in the silicon nitride contents.
( Eun Jung Lee ),( Ki Woong Jeong ),( Areum Shin ),( Bong Hwan Jin ),( Hum Nath Jnawali ),( Bong Hyun Jun ),( Jee Young Lee ),( Yong Seok Heo ),( Yang Mee Kim ) 생화학분자생물학회 2013 BMB Reports Vol.46 No.12
The anti-inflammatory activity of eriodictyol and its mode of action were investigated. Eriodictyol suppressed tumor necrosis factor (mTNF)-α, inducible nitric oxide synthase (miNOS), interleukin (mIL)-6, macrophage inflammatory protein (mMIP)-1, and mMIP-2 cytokine release in LPS-stimulated macrophages. We found that the anti-inflammatory cascade of eriodictyol is mediated through the Toll-like Receptor (TLR)4/CD14, p38 mitogen-activated protein kinases (MAPK), extracellular-signalregulated kinase (ERK), Jun-N terminal kinase (JNK), and cyclooxygenase (COX)-2 pathway. Fluorescence quenching and saturation-transfer difference (STD) NMR experiments showed that eriodictyol exhibits good binding affinity to JNK, 8.79 × 105 M-1. Based on a docking study, we propose a model of eriodictyol and JNK binding, in which eriodictyol forms 3 hydrogen bonds with the side chains of Lys55, Met111, and Asp169 in JNK, and in which the hydroxyl groups of the B ring play key roles in binding interactions with JNK. Therefore, eriodictyol may be a potent anti-inflammatory inhibitor of JNK. [BMB Reports 2013; 46(12): 594-599]
다채널 광정렬 장치에서의 다자유도 회전 스테이지 동작 특성에 관한 연구
정상화,차경래,김현욱,최석봉,김광호,박준호 한국공작기계학회 2005 한국공작기계학회 춘계학술대회논문집 Vol.2005 No.-
In recent years, as the demands of VBNS(Very high speed Backbone Network Service) and VDSL(Very high-data rate Digital Subscriber Line) increase, the development of kernel parts of optical communication such as PLC(Planar Light Circuit), Coupler, WDM elements increase. The alignment and the attachment technology are very important to fabricate the optical elements for communication. In this paper, the mechanism of rotational stage are studied. with the three different method and the results of them are applied to the design of the system. The performance test of resolution and travel is performed.
복합 운동프로그램이 초등학생의 신체구성, 혈중지질 및 체력에 미치는 영향
전종귀,이왕록,박희근,정준현,이영란,신동원,이경숙 충남대학교 체육과학연구소 2006 體育科學硏究誌 Vol.23 No.1
The purpose of the present study was to examine the effects of combined training on the changes of body composition, blood lipid profile and fitness in elementary school students. Thirty subjects participated in the present study. The subjects were divided into two groups either exercise group for 10weeks(15n) or control group for 10weeks(l5n) The results were described as follows; 1) There were significant differences in the body weight and lean body mass after the exercise program between two groups. 2) There were no significant differences in the blood TC, HDL-C, LDL-C, TG concentration after the exercise program between two groups. 3) There were significant differences in the sit-up and flexibility after the exercise group between two groups. In conclusion, it might be thought that the combined training improved the levels of body composition and health-related fitness in elementary subjects.
개 비장 질환의 미세세침흡입술을 통한 세포병리학 검사 4례
김현아,윤기영,최호정,정성목,이영원,조성환,박성준 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2011 動物醫科學硏究誌 Vol.18 No.1
To evaluate the accuracy and diagnostic significance of cytopathological diagnosis of canine splenic disorders, cytopathological examination throgh fine-needle aspiration(FNA) referred to Veterinary Medical Teaching Hospital of Chungnam National University were retrospectived. Splenic neoplasm, hemolymphatic neoplasm, hyperplasia, extramedullary hematopoiesis and splenitis were diagnosed canine splenic disorders through cytopathological examination. The patient should be identified what coagulation profile are normal before aspiration, because complication such as hemorrhage could happen. The 4 cases were identified symmetric, asymmetric splenomegaly on abdominal ultrasonography and then were performed ultrasound-guided FNA. The 4 cases were diagnosed hemangiosarcoma(2), hyperplasia(1) and extramedullary hematopoiesis(1) by clinical signs, hematological examination, and cytopathological examination. Cytopathological examination through FNA was cost-effective, no gneral anesthesia, no complication, and non-invasive method of diagnosis for canine splenic disorders.
김현아,윤기영,박정호,이왕희,송근호,박성준 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2011 動物醫科學硏究誌 Vol.18 No.1
A 5-year-old Russian blue cat was referred to the Veterinary Medical Teaching Hospital of Chungnam National University with the history of anorexia, lethargy, weight loss(6.5 to 4.8 kg) 2 weeks ago. Abdominal ultrasonography showed the following : increase of echogenicity of liver, irregular shape of gall bladder, hyperechoic region around duodenum. Pancreatitis, cholangitis, hepatic lipidosis was diagnosed by the ultrasonography. Anti- inflammatory therapy, antibiotic therapy was administered. Abdominal ultrasonography is a efficient available diagnostic tool but serum fPL test reveals the highest sensitivity and specifity result for feline pancreatitis. SNAP fPL test is newly released that can check pancreatitis within 10 minutes by same princple of Spec fPL test used in Gastrointestinal Laboratory of Texas A & M Univerrsity.
정준현 대구대학교 디자인연구소 2002 디자인연구논집 Vol.1 No.1
The purpose of this study is to introduce emotional evaluation model of apartments' exterior environment in order to qualitatively improve residental environment and comfortableness of apartments. Two apartment housing estates recently built in the Daegu and one in the Kwangju area were selected for the purpose of this study. In this study, theevaluation group consisting of residents(housewife), 30 undergraduates and 30 students of architectural major field evaluated the extent of emotion by physical elements of the subject apartments on the basis of 30 SD emotional tranquility scales of each group. For this experiment, photographs were taken on March 23, 2000, and the evaluation of the extent of emotion was made on June 21, 2000. Effective statistical result values were drawn by analysing the data obtained, using the SPSSWIN statistical program.
남성유방에서 발생한 침윤성 선암종 1 예 : Report of a case
정유경,문현준,전호종 조선대학교 1995 The Medical Journal of Chosun University Vol.20 No.1
Male breast cancer is rare compared to female breast cancer, about 1% or all breast cane or. The cause of male breast cancer is as poorly understood, but several etiologic factors have been suggested in the literature. Proposed risk factors include exogenous estrogen exposure, Klinefelter’s syndrome, gynecomastia and familial clustering. All of the microscopic types identified in the female breast have been encountered in males : the most common type is infiltrating duct carcinoma. Most often, it presents as a painless lump and subareolar in origin. Comparison with female breast cancer reveals no difference with regard to incidence of positive axillary lymph nodes. However there is a sightly lower survival rate for men. The stage of disease is the only parameter that significantly affects outcome. We report a case of breast cancer arising right subareolar area in a 57 year-old male. There were no familial history, Klinefelter's syndrome and microscopic evidence of gynecomastia. Histologically, this tumor was infiltrating duct carcinoma disposed in nests sometimes glands .