• Applied Microscopy
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• v.46 no.3
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• pp.150-154
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• 2016

The ultrastructure of fertilized egg envelope from Pseudobagrus fulvidraco belongs to Bagridae was investigated using light and electron microscopes. The fertilized egg was compressed spherical, light-yellowish, demersal, and adhesive. The size of fertilized egg is about $1.85{\pm}0.13mm$, perivitelline space is not well developed, and there were no appendicular structures on the outer surface of egg envelope and oil droplets in vitelline membrane under light microscope. The micropyle was located in the animal pole of fertilized egg. Adhesive reticular fiber was covered fertilized egg envelope. The thickness of egg envelope was about $3.7{\sim}4.2{\mu}m$, and the egg envelope consisted of two layers: an outer, electron-dense adhesive fibers layer and an simple inner layer with pore. Therefore, the ultrastructure of cross section of the fertilized egg envelope showed species specificity, but studies on the other species belongs to Bagridae were need to get correct information about common traits in family.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.9 no.5
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• pp.1-9
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• 2006

The purpose of this study is to make a design guideline in designing constructed wetland which can treat water quality both of point and nonpoint source water pollution. It focuses on structural aspects of two case studies of constructed wetland applying SSB(Sustainable Structured wetland Biotope) system in Korea. The constructed wetland of Lake Ju-am which was constructed in 2002 by Environmental Management Corporation, was designed by applying SSB system. It shows higher removal efficiency than expected - 56% of BOD removal efficiency, 60% of T-N removal, and 76% of T-P removal efficiency. In two cases, total wetland areal extents were calculated referred to treatment efficiency. The system is consist of micro-cell structures : inflow channel, forebay, multiple wetland cells and micro-pool. When designing constructed wetland appropriate in local area, the total organic system of vertical and horizontal structure : geology, hydrology, land use, and ecological surroundings of the sites should be considered totally.

• Journal of Chest Surgery
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• v.25 no.8
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• pp.850-855
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• 1992

Dead space of empyema occurrs from incomplete obliteration of infected pleural space from pulmonary tuberculosis, pyogenic infection, esophageal disease and post pulmonary resection. Chronic empyema can be treated by obliteration of dead space with autologous tissues such as, extrathoracic muscle flap and omental flap and thorachoplasty. Between May, 1986 to July, 1991 we treated 17 chronic empyema patients with autologous tissues and analysed the result. 1. Sex distribution was 14 males and 3 females between 5~62 years old. [mean 39.7 years old] 2. The volume of the dead space ranged from 100 to 450cc. [mean 213. 76cc] 3. The majority of used muscle flap were serratus anterior and latissimus dorsi, and there were 2 cases of am ntal flap. 4. The majority of underlying disease were pulmonary tuberculosis and there were 8 BPF[47%] in 17 patients 5. In 7 cases, thorachoplsty was needed. 6. Three cases recurred and there were no death.

• 한국신재생에너지학회:학술대회논문집
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• 2009.11a
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• pp.385-385
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• 2009

Uniform polyaniline nanofibers (PANI NFs), and chemically doped sulfamic acid(SFA) PANI NFs, synthesized via template free interfacial polymerization process, were used as new counter electrodes materials for the fabrication of the highly-efficient dyesensitized solar cells (DSSCs). The PANI NFs based fabricated DSSCs exhibited a solarto-electricity conversion efficiency of ~ 4.02% while, the SFA doped PANI NFs based DSSC demonstrated ~ 27% improvement in the solar-to-electricity conversion efficiency. The obtained solar-to-electricity conversion efficiency for SFA doped PANI NFs based DSSC was 5.47% under 100mW/$cm^2$(AM1.5). The enhancement in the conversion efficiency was due to the incorporation of SFA into the PANI NFs which resulted to the higher electrocatalytic activity for the $I^{3-}/I^-$ redox reaction.

• Proceedings of the KAIS Fall Conference
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• 2008.11a
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• pp.247-249
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• 2008

최근에는 정보의 발생이 업무처리 등의 전산작업에서 뿐만 아니라 우리주변에 널려있는 각종 센서와 같은 장비들로부터도 많은 양의 정보가 수집되고 있다. 본 연구에서는 온도, 습도, 조도 등의 정보를 수집하여 전송하는 센서노드로부터 무선으로 전송된 센서정보를 임베디드 시스템에서 1차 분석 및 수집, 저장한 다음 이들 센서정보를 호스트 서버가 요구할 때 전송하는 시스템을 제시한다. 이를 통해 센서정보가 전송될 때마다 이더넷을 통한 호스트와의 통신횟수를 줄일 수 있으며, 임베디드 시스템에서 모니터링 과정을 통해 보다 정확한 센서정보만을 호스트 서버에 전송함으로써 수집된 센서정보에 기반한 분석결과의 신뢰성을 높일 수 있다.

• Journal of the Korean Society of Clothing and Textiles
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• v.17 no.3
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• pp.391-406
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• 1993

The purpose of this study was to utilize of apparel CAD System by the classification of the basic pattern block in pattern making process. Gerber AM-300 CAD System was used for this study. The results form this study were as follows; 1. New shirts block were developed. 2. The sensory test was applied to evaluate the new shirts block for women by comparing it with Japanese Bunka shirts blouse pattern making method. According to a statistical analysis of the result of the 20 items on the questionnaire, the 19 items showed significant difference(${\alpha}{\leq}0.01$)between the two, with the new shirts block having higher scores. 3. A basic pattern block was selected by the design sketch. 4. P/D/S were enabled to be constructed directly from a block pattern. The drawing, deletion. duplication, and movement of all points and lines in the pattern might be made freely, and the split, pivot, and movement of the pattern, and the attachment of two patterns were possible. 5. Automatic grading of finished pattern have been developed by creation and modification of grading rules of block pattern.

• Korean Security Journal
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• no.3
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• pp.5-32
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• 2000

A differentiated training considered the individual traits of a security guard in order to achieve the self-realization as well as to fulfill the spiritual needs of a security guard is needed. To promote the development of security industry in the new millennium, new types of training methods should be introduced, and a planned elaborate training in consideration of the traits of individual security guards is needed. On the other hand, to cultivate occupational consciousness, and to increase training products, a specific kind of training based on the survey of demand should be carried out. In this study, I made an actual analysis current training contents derived from the questionnaires and interviews among the security guards who were employed at the security industry. From these analyses, I am going to suggest the following measures; 1) The improvement of circumstances in training should be preceded. 2) Training related to practical business in consideration of individual traits should be emphasized. 3) Producing excellent professionals and developing specific textbooks are needed. 4) To establish professional education institutes is urgently needed. 5) Systematic training methods sponsored by government authorities and security society should be established. 6) The deep concern of security industry employers about the importance of training is needed.

• Journal of Korean Society on Water Environment
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• v.23 no.1
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• pp.33-37
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• 2007

Microelectrodes for measuring nitrogenous compounds (${NH_4}^+$, ${NO_3}^-$) that were applied into the microfluidics chips was investigated, and the effect of temperature was especially examined. In this specific research, microelectrodes were first calibrated to check the function, and then microsensor that was combined microelectrode with microfluidic chip was re-calibrated. Experimental results showed that there are no change in the function between microelectrode and microfluidic chip. The electro motive force (EMF) for the ${NH_4}^+$ microsensor was similar to the one theoretically calculated from Nernst equation, but the EMF for ${NO_3}^-$ showed minor change.

• 한국신재생에너지학회:학술대회논문집
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• 2008.10a
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• pp.131-133
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• 2008

A serious problem of the 21st century is the supply of energy resources. Reserves of fossil fuels are facing depletion: renewable energy resources must be developed in this era. Dye sensitized solar cell (DSC) has been very economical and easy method to convert solar energy to electricity. Recently a novel tandem cell structure is proposed to improve photocurrent of DSC. To fabricated a tandem cell, the mesh structure of counter electrode is essential for the improvement in transmittance. In this study, we conducted the experiment to get the characteristic of DSC with mesh counter electrode. Under the standard test condition (AM 1.5, 100mW/$cm^2$), we obtained the maximum efficiency of 3.41% and the transmittance of 72% in the DSC with mesh counter electrode.

• Journal of Applied Biological Chemistry
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• v.43 no.2
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• pp.109-111
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• 2000

Effect of the two-stage operation and cell concentration on indirubin production was investigated using bioreactor culture of Polygonum tinctorium. Two-stage culture was operated successfully for 110 days without any adverse effects on continuous indirubin production. Maximum indirubin concentration was found to be at 80 mg/bioreactor. Initial cell concentration significantly affected indirubin production. The indirubin production at 29.2% PCV was improved by 845%, compared to that at 5% PCV. For high-density bioreactor culture of P. tinctorium, a maximum production rate of 10.2 mg indirubin/L day was obtained. Indirubin recovery for bioreactor operation was also examined using XAD-2, XAD-4, XAD-7, and solid silicon. XAD-4 was 1.6-fold more effective than that for solid silicon in indirubin recovery.