• Journal of Korean Dental Science
• /
• v.4 no.1
• /
• pp.20-25
• /
• 2011

Purpose: To describe the newly developed Film image transfer system (FITS) for proper positioning of the orthodontic mini-implant in the narrow interdental space and considerations for better application. Materials and Methods: A patient who was planning to have orthodontic mini-implant treatment on the posterior maxilla was recruited to assess the feasibility of FITS. Dental radiographic film and bite record was taken. And then the film image was transferred on the photographic emulsion coated model using transfer light through film projector (enlarger). After exposing the photo emulsion coating on the model, the image was developed with a working solution for a paper developer and fixed. The surgical guide for the mini-implant was fabricated from the transported FITS data. Results: The completed surgical guide was easily placed intraorally, and allowed a simple and rapid placement of the mini-implant. The site of the implant placement was accurate as planned position. Conclusion: In the reported case, The FITS technique represents an effort to minimize risk to the patient and produce consistently good results based upon accurate information about the anatomy of the implant site.

• The korean journal of orthodontics
• /
• v.37 no.4
• /
• pp.305-314
• /
• 2007

Interdisciplinary treatment of Class III malocclusion with congenital missing of unilateral maxillary canine and anterior crossbite is discussed focusing on a problem-oriented treatment planning, treatment progress, and treatment result. Maxillary mini-implant provided anchorage for distalization of the maxillary right porsterior dentition. Mandibular mini-implants were used to distalize the whole mandibular dentition. Total treatment time was 17 months to achieve a successful treatment goal. Stable occlusion was maintained after 12 months of retention.

• Advanced Composite Materials
• /
• v.18 no.4
• /
• pp.327-338
• /
• 2009

In this paper, through an evaluation process conducted on several designs of mini-LIPCA (Lightweight Piezo-Composite curved Actuator), an optimal design of a mini-LIPCA has been proposed. Comparing with the LIPCA-C2, the design of the mini-LIPCA comes with reduced overall size and a thinner active layer. Since a variation in the number and lay-up of fiber composite layers may strongly affect the performance of the device, one is able to configure several designs of mini-LIPCA. The evaluation process is then followed in order to determine a configuration which characterizes the possibly optimal performance. That is, a design of a mini-LIPCA is said to be optimal if it is capable of producing a maximum out-of-plane displacement. The size of the LIPCA to be investigated was selected to be $10\;mm\;{\times}\;20\;mm$ in which the thickness of PZT plate is about 0.1 mm. The thickness of glass/epoxy and carbon/epoxy are about 0.09 mm and 0.1 mm, respectively. The evaluation process has been conducted thoroughly, i.e., analytical estimation, numerical approximation and the experimental measurement are all involved. Firstly, the design equation was used to calculate essential parameters of proposed lay-up configurations. Secondly, ANSYS, a commercial FEA package, was utilized to estimate displacement outputs of the actuators upon being excited. Finally, experimental measurements were able to verify the predicted results.

• Journal of Microbiology and Biotechnology
• /
• v.20 no.4
• /
• pp.817-820
• /
• 2010

Type 1 diabetes mellitus (T1DM) is an autoimmune disease characterized by extreme insulin deficiency due to an overall reduction in the mass of functional pancreatic ${\beta}$-cells. Several animal models have been used to study T1DM. Amongst these, the mini-pig seems to be the most ideal model for diabetes research, owing to similarities with humans in anatomy and physiology. The purpose of this study was to analyze differentially expressed pancreatic proteins in a streptozotocin (STZ)-induced mini-pig T1DM model. Pancreas proteins from mini-pigs treated with STZ were separated by two-dimensional gel electrophoresis, and 11 protein spots were found to be altered significantly when compared with control mini-pigs. The data in this study utilizing proteomic analysis provide a valuable resource for the further understanding of the T1DM pathomechanism.

• Journal of Korean Library and Information Science Society
• /
• v.24
• /
• pp.335-364
• /
• 1996

The colony education policy of Japanese Empire was, as a su n.0, ppression on national salvation education of Korean, on the one hand it was liquidation of Korean national spirit and other hand, it has the object to Japanizing Koreans through cramming Japanese language and its culture. During the Japanse occupation of Korea, the libraries had two roles, one was to press Korean and its culture and the other was to civilize Koreans for Japanizing. The purpose of this study is to examine the role of rural-mini libraries whether the former or the latter. From 1932 to The Chosun Governor- General Department (Chosun Chongdokboo) actively spread 'The Movement of Rural Development in Korea. At the same time there were many rural -mini libraries in Korean rural and fishing community. Under the colony of Japanese Empire, colony policy was itself very tough that Japanese Empire did their utmost ideas to win Korean culture over and Japanzing Korean with every possible pressures. Since rural-mini libraries were planned by the chosun Governor-General Department, however, were established by Korean themselves with the property of local education center( Hyanggyo). Therefore, rural-mini libraries were as facilities to promote rural economic development for providing Japanese with some materials which need to conduct a war, and to introduce local people to participate in civilizing activity themselves and farmers and fishermen were forced to group to be educated in Japanese language and its reading. Rural-mini libraries were, as it were, not as facilities for enlightening Korean peoples but as facilities for civilizing Koreans.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• v.42 no.4
• /
• pp.182-186
• /
• 2016

Objectives: The purpose of this study was to analyze the incidence of indications for the removal of mini-plates over a five-year period in maxillofacial trauma patients. Materials and Methods: The medical records of 530 patients who underwent treatment with mini-plate fixation after maxillofacial trauma were reviewed for a five-year period (May 2007 to May 2012). Patients were evaluated concerning the number of mini-plates removed, age and gender distributions, time between insertion and removal, indication for removal, and site of removal. Results: The plates of 120 patients were removed (26 females and 94 males). The removal rate was 22.6%. The most frequent indication for removal was patient demand (81.7%), followed by tooth extraction (7.5%), and pain (3.3%). The most frequent removal site was the mandible (95.0%). Conclusion: The number of mini-plates removed was small, and the most common indication for removal was patient demand. There is no evidence to support a recommendation for the routine removal of titanium mini-plates.

• Transactions of the Korean Society of Mechanical Engineers B
• /
• v.31 no.5
• /
• pp.457-466
• /
• 2007

A numerical and experimental study on the evaluation and the prediction of cleanliness level in the mini-environment system was carried out. Using the concept of local mean air-age (LMA) and effective flow rate, the new direct method for estimating the mini-environment was developed and compared with the previous performance index of airflow pattern characteristics. It was found out that the airflow pattern analysis is a restricted method to estimate the real performance of the mini-environment. The reason is that the airflow pattern cannot predict the effect of the increment of the ventilation rate on the cleanliness level in the mini-environment. While LMA is capable of showing the effects of the contaminant accumulation caused by turbulent intensity, eddy, and the increment of the effective flow rate. This result showed that LMA is more exact and effective performance index than the previous one like the airflow pattern characteristics.

• The Bulletin of The Korean Astronomical Society
• /
• v.43 no.1
• /
• pp.57.1-57.1
• /
• 2018

Reionisation in the early Universe is likely driven by dwarf galaxies. Using cosmological RHD simulations, we study star formation and the escape of Lyman continuum (LyC) photons from mini-haloes with Mhalo<108Msun. We find that feedback reduces star formation very efficiently in mini-haloes, resulting in the stellar mass consistent with the empirical stellar mass-to-halo mass relation derived in the local Universe. Because star formation is stochastic and dominated by a few gas clumps, the escape fraction in mini-haloes is generally determined by photo-ionization, rather than supernova explosions. We find that the photon number-weighted mean escape fraction in mini-haloes is higher (20-40%) than that in atomic-cooling haloes. Despite their high escape fractions, LyC photons from mini-haloes are of minor importance for reionization due to inefficient star formation. We confirm previous claims that stars in atomic-cooling haloes with masses $10^8M_{sun}$$10^{11}M_{sun}$ are likely to be the most important source of reionization.

• New & Renewable Energy
• /
• v.17 no.1
• /
• pp.7-18
• /
• 2021

This study analyzes the role of market actors in the energy transition process and the interaction between them and ordinary citizens, primarily focusing on the mini-PV project in Seoul. The study also proposes measures to harness market actors' activities and successfully implement the distribution of mini-PV systems in Seoul. In this study, practice theory is used as a theoretical resource to analyze the interaction between market actors and civil society actors and to help understand how market actors influence the decisions of regular citizens in installing mini-PV at their properties. After conducting surveys and hosting in-depth interviews with ordinary citizens and market actors, it was found that to further promote the role of market actors, the Seoul Metropolitan Government should actively support and monitor the public relations activities of market actors, while concurrently managing selected companies and establishing relevant administrative systems for continued effective use post-installation of mini-PV systems. In future studies of the energy transition process, market actors should also be recognized as key players, along with government and civil society actors, and their roles should be studied in a balanced way.

• Journal of the Korean Society of Manufacturing Process Engineers
• /
• v.20 no.3
• /
• pp.47-52
• /
• 2021

Fine dust generated from vehicle brakes accounts for a significant amount of fine dust from non-exhaust system. Since such brake fine dust contains a large number of heavy metal components that are fatal to the human body, a device capable of collecting them needs to be developed. A mini cyclone, one of the devices that can effectively collect fine dust, has the advantage of relatively simple shape and high collection efficiency. Therefore, in this study, the collection efficiency of the mini-cyclone was numerically analyzed using CFD in order to find out whether such a mini-cyclone is suitable for collecting brake fine dust. As a result, the cut-off diameter was predicted to be about 1.5㎛, which means that the particle trapping load of the filter can be drastically reduced. Therefore, there is a possibility that the mini-cyclone can be used to collect fine dust from disc brakes.