[en] According to the importance about non-memory design is risen recently, interest regarding ASIC(Application Specific Integrated Circuit) design. ASIC is the IC designed and manufactured for specific use. And it also called as Custom IC because, mainly for the semi(-specific) custom LSI, it is designed as the requested specification and drawing by customer. But expense and time loss by failure are becoming big burden to manufacture ASIC actually. Accordingly, provided CPLD(Complex Programmable Logic Device) and FPGA(Field Programmable Gate Array) device with design software can verify before manufacture ASIC. In this paper, Designed and verified LCR(Log Count Rate) circuit for ENFMS(Ex-core Neutron Flux Monitoring System) that is used in plant using ALTERA's CPLD and MAX+PLUS II design tool by Graphic editor with simulation

[en] The process control cabinet consists of several subracks. Each sub-rack power delivered by backplane through power distribution component located in each sub-rack from main power. This power distribution component dissipates power like resistor between main power supply and cards. So some voltage drops are occurred. This paper studies power distribution component improvement to reduce damage by over voltage, over current, voltage drop and to keep reverse polarity protection, power switching

[en] In the present nuclear fields, all Instrument and Control (I and C) applications are operating by the analog method using the analog device and passive things. It is hard to make miniaturization of modules and robust system against noise, reliability is decreased also because malfunctions are occurred very often. In order to solve these problems, we suggest that adopt the digital method using the digital device and active things in the nuclear fields. In these papers represented, from these results of the investigation

[en] Primary pulmonary amyloidosis is a rare diesase, and is classified as either tracheobronchial or parenchymal; the latter is also divided into nodular and diffuse alveolar septal forms. The alveolar septal form is extremely rare and usually produces reticular and nodular opacities. We describe a case of alveolar septal pulmonary amyloidosis manifested as multiple small nodules on chest radiograph and disseminated micronodules mainly in centrilobular and subpleural location without reticular opacities, on HRCT

[en] The purpose of this study is to compare the diagnostic accuracy and usefulness of three dimensional CT, plain radiography and two-dimensional axial CT in cases of maxillofacial fracture. Plain radiography, two dimensional axial CT, and three dimensional helical CT images of eighty-two maxillofacial fractures in 45 patients were retrospectively analyzed according to detectability of fracture and displacement. The diagnostic accuracy of each modality was analysed using the Ridit method. Two- and three- dimensional CT were superior to plain radiography in evaluating fracture and displacement (p=0.001, 0.039), though the type of CT used did not cause significantly variation in the accuracy with which fracture and different were diagnosed. Three dimensional helical CT is useful not only in the detection of fracture but in the evaluation of displaced maxillofacial fractures, especially if these are multiple and the complex

[en] The structural components in sodium-cooled fast reactor (SFR) will be subjected to a harsh operating conditions such as much higher temperature and neutron dose comparing to that of conventional reactors. It is desirable to have a constitutive model which accurately describes the history dependence of long-term mechanical response, e.g. cyclic deformation response in order to improve the reliability of lifetime assessment procedures. Therefore, it is needed to evaluate the inelastic characteristics of RPV materials such as ratcheting that can be induced by cyclic thermal stress resulted from fluctuation of coolant level. The high amount of strain accumulation due to ratcheting in service of SFR can thin down the structural components in the primary sodium circuit subsequently leading to buckling. However, the experimental data which are needed to provide material parameters of inelastic constitutive equation for Type 316H stainless steel which is the prime candidate material for RPV of Korean SFR are very rare. It is reported that the inelastic behaviors of certain materials could be affected by dynamic strain aging (DSA). The objectives of this study are to obtain the fully reversed cyclic data and ratcheting data for Type 316H stainless steel and to investigate the effects of DSA on the inelastic behaviors of Type 316H stainless steel. The cyclic hardening behavior and ratcheting deformation of Type 316H stainless steel at elevated temperature were investigated in this study. The strongly pronounced strain hardening behaviors were observed at a temperature range 500-575 .deg. C as the results of fully reversed cyclic testing and ratcheting testing. It was concluded that the sharp increase in hardening ratio and the retardation of ratcheting strain accumulation in the temperature range was attributed to the DSA manifested by serrated flow observed in tension testing conducted in same temperature range

[en] To access the usefulness of magnetic resonance(MR) in the evaluation of orbital blowout fracture. Fourteen patients with orbital blowout fractures diagnosed by plain radiography(n=8) or computed tomography(CT)(n=6) were examined with MR. Twenty blowout fractures including six patients with two lesions were presented and the fracture site of the orbit was the medial wall in 11 cases and the orbital floor in nine cases. MR images in nine cases of six patients could be compared with CT scans. On MR images, we retrospectively evaluated the presence of fracture, herniation of orbital fat, abnormality of extraocular muscle, intraorbital hematoma and intrasinus hemorrhage. In nine cases we also compared these findings with CT scans. Eighteen orbital blowout fractures with fat herniation could be diagnosed on MR images. In only nine of these 18 cases, the fracture itself could be seen on MR images as a disruption of the orbital wall, which produce a signal void. But two blowout fractures without orbital fat herniation, seen on CT, were not detected on MR images. Twenty abnormalities of extraocular muscle in 18 cases were depicted on MR images. There were no significant differences between MR and CT in the evaluation of orbital fat herniation and extraocular muscle abnormality ; however,in one case oblique sagittal MR images provided more useful in formation about the status of the inferior rectus muscle. Intraorbital hematoma was detected by MR in three patients. We were able to establish the presence of intraorbital hematoma by using the different signal intensities from fat or muscle on T1- and/or T2-weighted images. MR was found to be superior to CT in one case of intraorbital hematoma because of the iso-density of hematoma compared to muscle. MR also detected intrasinus hemorrhage which on T1-weighted images revealed high signal intensity in ten cases. MR was intrasinus hemorrhage which on T1-weighted images revealed high signal intensity in ten cases. MR was more valuable in demonstrating intrasinus hemorrhage in one case where a CT scan showed only hypodense fluid. MR is a useful diagnostic modality in the evaluation of orbital blowout fracture with orbital fat herniation. Compared with CT, it also provides more valuable information about blowout fracture with orbital fat herniation. Compared with CT, it also provides more valuable information about associated extraocular muscle abnormality, subacute hemorrhage in the orbit and paranasal sinus