• Journal of the Korean Society for Railway
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• v.3 no.4
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• pp.185-193
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• 2000

In general, a third rail current collecting shoegear is widely used in the light rail transit system since it is more efficient and economical than an overhead pantograph. Therefore, its specification is prescribed in the Korean standard specifications for the light rail transit for its applications. This paper describes the development of the third rail current collecting shoegears which is suitable to Korean situation and satisfactory to the Korean standard specifications. Two types are developed for the steel wheel and the rubber tyred AGT system, and various experiments are executed. It is found that performance of the third rail current collecting shoegear developed is proved acceptable.

• The Korean Journal of Cytopathology
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• v.5 no.2
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• pp.160-166
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• 1994

Collecting duct carcinoma of the kidney is an unusual variety of renal carcinoma considered to arise from the epithelium of the collecting ducts. We recently experienced a case of fine needle aspiration cytology of collecting duct carcinoma of the kidney in a 17 year-old girl. The smear revealed many cellular clusters of ordinary papillary pattern, characterized by clumping of cells with nuclear overlapping, in a slightly necrotic background. The tumor cells had abundant delicate granular cytoplasm with some having vacuolation. The nuclei were only slightly pleomorphic with somewhat coarse chromatin and one or more small nucleoli Some nuclei showed irregular nuclear membrane and nuclear groove. A few polymorphs were also present.

• Proceedings of the KSR Conference
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• 1998.11a
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• pp.530-536
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• 1998

In the design of the light rail transit which is more reliable and economical, it is essential to develope a efficient third rail system. Especially, the analysis for the conductivity of conduct rail and the wear of collecting shoe is the first step of its development. In this paper, experiments for conductivity in conductor rail, wear in collecting shoe were performed respectively as different materials of conductor rail and current collector. Noise level and interruption, wear and contact resistance of collecting shoe were proposed as design parameters for the development of this system. Experimental equipment and methods of design parameter stated above were proposed, which is expected that analyzed results will be used as a basic data for the development of the system.

• Land and Housing Review
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• v.10 no.2
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• pp.53-58
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• 2019

Particulate matter (PM) is designated as a group 1 carcinogen by the International Agency for Research on Cancer (IARC) of the World Health Organization (WHO). In South Korea, the health threat caused by PM is the most serious level internationally. Therefore, in order to solve the urban PM problem, it is important to develop the technology that can control PM efficiently. In this study, CFD(Computational Fluid Dynamics) simulation was performed for PM pre-filter (type 1-3 with different PM collecting room) to develop a high-efficiency PM collecting device. The complex flow field and the local flow phenomenon inside the PM collecting device were understood with CFD simulation by changing the shape and size of the pre-filter. The PM removal performance can be described with flow rate through the device and PM removal efficiency. The type-1 pre-filter with 5x5 size collecting room was confirmed to have the highest efficiency. Based on the analysis results, the optimal type of pre-filter could be developed and it would be applied as an element technology included in the PM collecting device.

• The Journal of the Korea Contents Association
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• v.18 no.7
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• pp.459-469
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• 2018

This is a qualitative study to research the meaning and essence of life of old women living alone collecting waste paper in their experiences of daily life. Targeting seven old women who have kept collecting waste paper for a long time, data was collected through preliminary research and in-depth interview. In the results of analyzing in accordance with Colaizzi(1978)'s phenomenological analysis method, total 18 themes and five theme-groups were drawn. The five theme-groups related to the experience of old women collecting waste paper included 'tough time-I have gone through', 'continuity of tough life', 'continuously bearing', 'adjusting to street environmental changes', and 'proactive and active life of mine-current myself'. In summary, the essence of life of old women collecting waste paper was interpreted as 'acceptance'. Thus, the institutional/practical intervention measures for the social welfare of old women collecting waste paper were suggested.

• Journal of Physiology & Pathology in Korean Medicine
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• v.28 no.2
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• pp.223-232
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• 2014

Most of salivary cortisol are an unbound free form reflecting physiological function later. Thus, it is used frequently to evaluate the HPA-Axis and physiological function. Although the needs of salivary cortisol measurement in Korean Medicine is higher and higher, there are not many studies, because the reliability of salivary cortisol measurement is not high. To make the reliability high and encourage to use it in Korean Medicine, the goal of this study is to suggest the standard method of saliva collecting for cortisol measurement through the review of previous studies using salivary cortisol and to encourage to use it in clinical fields in Korean Medicine. The results are as followed; First, salivary cortisol has many benefits, i. e. easy collecting, non-invasive collecting, and reflecting the physiological function. Second, the collecting time and method are kept sternly, because the methods of saliva collecting vary depending on the goal of study. Third, the specific tools for saliva collecting are recommended to prevent contamination. In conclusion, if the standard methods of saliva collecting is kept to measure salivary cortisol, it would be very useful in many fields of Korean Medicine.

• Analytical Science and Technology
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• v.15 no.2
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• pp.157-162
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• 2002

A technique which could collect the traditional and the industrial hanji fibrous sludge efficiently from wastewater using a cationic surfactant cetyltrimethylammonium chloride (CTAC) was developed. When the concentration of CTAC was $1{\mu}g/mL$ in wastewater that the amount of the traditional hanji fibrous sludge was about 0.08 g/L, the collecting yield was more than 95% and the collecting time was less than 30 sec. When only CTAC was used to collect the industrial hanji fibrous sludge, about 90% of collecting yield was obtained at more than $15{\mu}g/mL$ CTAC. But the sludge layer at the surface of solution was not stabilized and the flotation time was relatively longer. And, when $5{\mu}g/mL$ CTAC and various amount of PAMID$^{(R)}$ was added to the industrial hanji sludge, the collecting yield was increased and sludge layer also was more stabilized. But the collecting yield was higher in the traditional hanji sludge than in the industrial hanji sludge.

• The Korean Journal of Archival Studies
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• no.53
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• pp.119-159
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• 2017

The study aims to provide a strategies for managing collecting policies through an analysis of issues on it. For the purpose, it conducts literature review and theoretical studies on characteristics, roles, and importances of civil domain digital archives' collecting policies. As a case study, the study selects 4 archives, such as Queer Archives, Seotaiji Archives, iCoop Archives, and Sori Archives, and discusses basic status and elements of their collecting policies. Furthermore, it interviews 9 civil domain digital archives for analyzing their collecting policies' making processes, usages, copyrights issues, cooperation with other institutions. As a result, this article presents alternative strategies for awareness campaign, independency, essential elements of the efficient collecting policy management.

• Journal of Bio-Environment Control
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• v.29 no.3
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• pp.252-258
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• 2020

The aim of this study was to investigate the effects of timing of collecting date and concentration of IBA and NAA, in order to enhance initial activity and seedling quality of domestic strawberry. Strawberry cuttings were separately taken twice, in June 7 and in July 5, and IBA and NAA were treated with the concentrations of 0.025, 0.05 and 0.1% at cutting date, respectively. The seedlings were evaluated for the percentage of survival during 18 days at 6 times after tunnel cultivation. The NAA treatment was inappropriate for strawberry cutting due to the high rate of seedling mortality, regardless of the collecting date. The vitality of the seedlings was highest at IBA 0.1% in June collecting and at IBA 0.05% in July collecting. The seedlings from June collecting had a higher quantum yield at IBA 0.1% and the seedlings from July collecting at IBA 0.05%. Therefore, IBA could be more effectively applied than NAA to promote the vitality and quality with the appropriate concentration of 0.1% at June collecting and 0.05% at July collecting, respectively.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.24 no.1
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• pp.37-44
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• 2012

This paper describes energy loss in a pipe line of refuse collecting system. Analysis of energy loss in a pipe line is the decisive factor in a design of refuse collecting system. Using the results of energy loss analysis, we can determine the power of turbo-blower. The flow characteristics of the pipe line with refuse bags were analyzed by three-dimensional CFD. The refuse bag is modeled by using the shape obtained from profile measurement. Friction factors were calculated with changing the refuse bag size, mixing ratio and Reynolds number. And drag coefficients were calculated using the CFD results. From the results we can calculate energy loss in a pipe line of refuse collecting system and predict the capacity of turbo-blower.