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김선문,허원석,채경훈,강윤세,정재훈,김연수,박기오,문희석,이엄석,김석현,성재규,이병석,이헌영,신경숙,조준식,송인상,강대영 충남대학교 의학연구소 2003 충남의대잡지 Vol.30 No.2
Malignant peritoneal mesothelioma is a rare neoplasm that arises from the mesothelium of a serosal cavity and is a rapidly fatal disease with a median survival of 4 to 12 months for untreated cases. Recently, we experienced a case with malignant peritoneal mesothelioma who was suspected hepatocelluar carcioma by abdominal CT scan and was confirmed by biopsy including immunohistochemical stain(calretinin) after surgery. We performed tumor excisions and wedge resection of the liver(segment Ⅷ)and inserted Tencoff catheter in abdominal cavity at 25th day of post-operation. We treated with intraperitoneal paclitaxel(25mg/m^(2)/day for 5 days) six courses monthly. She was well tolerable and is still living without any evidence of recurrence for 14th month of post-operation.
안난희, 신재훈, 옥정훈, 이상민, 김석철, 사동민 忠北大學校 農業科學硏究所 2016 農業科學硏究 Vol.32 No.2
Soil fertility is fundamental in determining the productivity of all farming systems and is most�ᅠ�ᅠ commonly defined in terms of the ability of the soil to supply nutrients to crops. Organic farming systems rely on the management of soil organic matter to enhance the chemical, biological and physical properties of the soil, in order to optimize crop production. Organic agriculture excludes the use of chemical nitrogen fertilizers, instead requiring a balance between supply and demand nutrients through the use of organic matter. Nutrient management is one of the main challenges facing organic farming. The short term challenge is supplying sufficient nutrients to crops at the correct point in their development to achieve economically viable yield, while in the long term, the difficulty is to balance nutrient inputs and runoffs to avoid nutrient rundown or environmental pollution. This paper reviews information from the literature to investigate strategies of managing nutrients by supplying organic matter in organic agriculture during the major phases of crop growth.
鄭熺孝,安光列,金鎬洙,黃俊碩 경상대학교 생산기술연구소 2001 工學硏究院論文集 Vol.1 No.-
Eccentric load acts on box girder is divided into bending and torsional load and deforms cross section. Distortion that is resulted from torsional load is largely different according to tickness of each plate or stiffener. According to with and without regard of distorsion effect, it is possible to divide analysis of box gilder into two. First, analysis of box gilder can be able to calcurate with rigid box girder in assumption that there is no distorsion when the girder is well stiffened with diaphragms or cross bracing and plate thickness of box section is thick. Second is the analysis that must be considered effect of distorsion when the girder has not sufficient stiffener or plate thickness of box section is not well thick. In numerical example of this study, normal stress of rigid cross section analysis is compared with that of deformable cross section analysis without interior diaphragms. Then, it was studied that stresses of the deformable cross section analysis can be near rigid analysis when box girder was stiffened with interior diaphragms.
Memory 소자 응용을 위한 BST(Ba_xSr_1-_xTiO_3) 강유전체 박막과 전극과의 계면특성
정민재,조정희,홍석민,김호건,김옥경 漢陽大學校 工學技術硏究所 1997 工學技術論文集 Vol.6 No.1
BaxSr1-xTiO3 powders were prepared by changing stoichiometry of Ba and Sr. After they were calcined and sintered at 1,200℃ and 1,300℃ respectively, BST sputtering targets were made in 3inch mould. For MIM structure capacitors. Pt-based structures such as Pt/TiN/SiO2/Si, Pt/Ti/Si3N4/Si, Pt/SiO2/Si, Ru/SiO2/Si and Ru/Si3N4/Si were used for bottom electrodes, and subsequently, the BaxSrl-xTiO3 thin films were sputtered on them. After the analysis of their structures by XRD, Al was evaporated on the BST films for MIM capacitor. We found that the structures of the films showed good crystallinity above 550℃ from the results of XRD measurements. The largest dielectric constant of films was obtained with 0.7mol% of Ba. The electric properties of the capacitors were very good with Pt/TiN/SiO2/Si electrodes.
진행파를 이용한 디지탈 거리 계전기법의 고장발생각에 따른 고장거리 산출 보정에 관한 연구
정주환,서희석,김철환,신명철 成均館大學校 科學技術硏究所 1992 論文集 Vol.43 No.1
For many years digital protective methods have employed for the calculation of transient phenomena on power system networks caused by faults. This paper presents a travelling wave digital protection scheme to be used as an ultra high speed EHV/UHV transmission line relay. A detection of fault is made by a highly reliable relaying algorithm which makes use of the modal components of the voltage and currents which are caused to be superimposed on the steady state prefault power frequency components following the fault inception. Some of the potential problems and limitations associated with fault angles are achieved using correction factor. Varification of the algoithm is presented through digital computer numerical simulation using electromagnetic transients program(EMTP).
鄭熺孝,金洪俊,李承列,黃俊碩 경상대학교 생산기술연구소 2002 工學硏究院論文集 Vol.2 No.-
The purpose of this study is about the possibility of using bamboo to reinforce concrete in comparison with the reinforced concrete in the same experimental condition by conducting concrete using bamboo material and mechanical test of a bamboo. As a substitute material for the reinforced concrete, to check the possibility of using concrete with bamboo material either saving iron resources or developing lighter material was tried. Conclusions of this study can be summarized as follows; In contrast to reinforced concrete, bamboo concrete was failed brittly about cracked state, the failure was occurred by slip between concrete and bamboo before it reached yielding stress of bamboo. In the pullout test, bamboo pullout specimens were crushed by brittle crack and steel bar pullout specimens by pullout failure.
이철희,서정식,고말식,손동석,김성국 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.3
With the use of antibiotics and improved dental care, osteomyelitis of the jaw is less common these days. But sometimes the management of osteomyelitis is more difficult because of appearance of resistant organisms to antibiotics. Treatment of the steomyelitis are incision and drainage, closed catheter irrigations, sequestrectomy, saucerization, hyperbaric ocygen therapy, and resection with or without bone graft. We experienced advanced osteomyelitis due to delayed treatment of left mandibular angle fracture. He have medical history of pschysoprenia. We decided to treat the patient with open reduction and closed cather irrigation. We achived reconsolidation of mandibular fracture accompanied by osteomyelitis by complete removal of inflammatory tissues, rigid fixation with miniplate and closed catheter irrigation.
조정태,이석원,남부희 강원대학교 산업기술연구소 2000 産業技術硏究 Vol.20 No.B
This paper describes the path planning method in an unknown environment for an autonomous mobile robot equipped with CCD(Charge-Coupled Device) camera. The mobile robot moves along the guideline. The CCD camera is used for the detection of the existence of a guideline. The wavelet transform is used to find the edge of guideline. It is possible for us to do image processing more easily and rapidly by using wavelet transform. We make a fuzzy control rule using image data as an input then determined the position and the navigation of the mobile robot. The center value of guideline is the input of fuzzy logic controller and the steering angle of the mobile robot is the fuzzy controller output. Some actual experiments show that the mobile robot effectively moves to target position by means of the applied fuzzy control.
장희석,정진은 明知大學校 産業技術硏究所 1984 産業技術硏究所論文集 Vol.3 No.-
Thermal stress analysis of engine piston which is subject to a thermal loading is performed with computer graphic package, MOVIE, BYU and developed FEM program for 3 different boundary conditions. Computation time of numerical analysis is considerably reduced by means of explicit method in manipulating capacity metrics. Resulting isothermal contours, principal stress distribution and deformed shape of piston are plotted with computer graphic device. These results suggest the reasonable boundary conditions in the design of piston.