• Journal of Industrial Technology
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• v.2
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• pp.33-44
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• 1982

This study mainly concentrated on the treatment of nightsoil by an anaerobic filter media process. Nightsoil has been one of the major water pollutants in this couotry. It represents high ROD and SS concentrations. A comprehensive laboratory study conducted at Kangwoon National University indicate: (1) In the case of anaerobic filter system, COD and BOD removal efficiencies were greatly influenced by hydraulic retention time(HRT), but SS removal efficiencies dropped slowly when HRT were 2~13 days. (2) COD removal efficiencies were 19% when HRT were 15 days, 14% when HRT were 8 days, 10% when HRT were 6 days, 9% when HRT were 4 days, 2% when HRT were 2 days. (3) BOD removal efficiencies were 23% when HRT were 15 days, 14% when HRT were 8 days, 18% when HRT were 6 days, 7% when HRT were 4 days, 5.8% when HRT were 2days. (4) SS removal efficiencies were 21%~25%(2~15 days HRT).

• Journal of the Korean Society of Industry Convergence
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• v.16 no.2
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• pp.35-39
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• 2013

This paper synthesized the new copper removal agent(PW-2001) and investigated removal efficiency of copper, COD, calcium, SS and sludge amounts. Removal efficiency of copper were 96.1% and 99.1% with the lime and PW-2001, respectively while COD removals reached up to 38% and 69.6% with the use of lime and PW-2001. The concentrations of calcium and SS with PW-2001 were decreased 2.68 and 4.95 times lower than those with lime. Amount of sludge with PW-2001 was 60% smaller than lime. Quantity of PW-2001 needed for coagulation only reached 58.7, compared to lime standard quantity(100), and total cost of copper removal with PW-2001 was saved 25% more than lime.

• Journal of environmental and Sanitary engineering
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• v.12 no.3
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• pp.1-7
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• 1997

이 연구에서는 SBR 공법을 이용하여 질소, 인 동시제거기장에 대해 관찰하고 BOD-SS loading변화에 따른 오염물질 제거효율에 대해 검토하였다. BOD, TN 및 TP 제거율은 $20^{\circ}C$에서 95%, 74% and 81%로 나타났으며, Phosphorus luxury uptake는 호기성이 시작된후 1,2시간후에 각각 67% 및 84%를 흡수 하는 것으로 관찰 되었으며, 호기성 말기의 농도는 $0.9mg/{\ell}$ 이하를 유지하였다. 80% 및 85% 이상의 안정된 질소 제거효율을 유지하기 위해서는 BOD-SS loading 값을 0.15 및 0.08 kg-BOD/kg-SS.day 이하로 유지하여야 하는 것으로 나타났다. 또한 1회 방류수량의 변화에 따른 관찰에서, 반응조 유효용량의 30%, 40% 및 50%를 유출할 경우 TN은 각각 78%, 72% 및 58%를 TP는 각각 81%, 77% 및 66%의 제거효율을 보였다.

• Journal of The Korean Astronomical Society
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• v.34 no.4
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• pp.251-254
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• 2001

To examine the structure and dynamics of thick accretion disks, we use a two-dimensional viscous hydrodynamic code coupled with radiation transport. The $\alpha$-model and the full viscous stress-tensor description for the kinematic viscosity are used. The radiation transport is treated in the gray, flux-limited diffusion approximation. The finite difference methods used are based on an explicit-implicit method. We apply the numerical code to the Super-Eddington black-hole model for SS 433.@The result for a very small viscosity parameter a reproduces well the characteristic features of SS 433, such as the relativistic jets with $\~$0.26c, the small collimation degree of the jets, the mass-outflow rate of ${\ge}5{\times}10^{-7}M{\bigodot}yr^{-1}$, and the formation of the X-ray iron emission lines.

• Koreanishche Zeitschrift fur Deutsche Sprachwissenschaft
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• v.7
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• pp.165-191
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• 2003

In meiner Arbeit habe ich versucht, die allgemein bekannten Eigenschaften des deutschen Volkes '$Flei\ss(Anstrengung)$, Ehrlichkeit (Aufrichtigkeit) und Sparsamkeit' in den deutschen $Sprichw\"{o}rtern$ herauszufinden. $Daf\"{u}r$ habe ich 100 deutsche $Sprichw\"{o}rter$, die 1474 Deutsche bei den Umfragen am meisten genannt haben, inhaltlich analysiert. Und nach den Inhalten der $Sprichw\"{o}rter$ habe ich die oben genannten 100 deutschen $Sprichw\"{o}rter$ in verschiedene Kategorien eingeteilt. Durch meine Untersuchung habe ich bemerkt, dass die $Sprichw\"{o}rter$, die Eigenschaften '$Flei\ss(Anstrengung)$, Ehrlichkeit(Aufrichtigkeit) und Sparsamkeit' beinhalten, von den Deutschen am $h\"{a}ufigsten$ genannt werden. $Au\sserdem$ habe ich bei meiner Untersuchung festgestellt, dass die allgemein bekannten Eigenschaften des deutschen Volkes auch in den meisten deutschen $Spnchw\"{o}rtern$ vorkommen.

• Journal of Electrochemical Science and Technology
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• v.6 no.1
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• pp.7-15
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• 2015

3-(4-Iodophenyl)-2-imino-2,3-dihydrobenzo[d]oxazol-5-yl 4-methylbenzenesulfonate (4-IPhOXTs) was synthesized and its inhibiting action on the corrosion of stainless steel 316L (SS) in sulfuric acid was investigated by means of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The results of the investigation show that this compound has excellent inhibiting properties for SS corrosion in sulfuric acid. Inhibition efficiency increases with increase in the concentration of the inhibitor. The adsorption of 4-IPhOXTs onto the SS surface followed the Langmuir adsorption model with the free energy of adsorption ΔG⁰_ads of −8.45 kJ mol⁻¹ . Quantum chemical calculations were employed to give further insight into the mechanism of inhibition action of 4-IPhOXTs.

• Journal of Korean Society on Water Environment
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• v.31 no.4
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• pp.392-398
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• 2015

The aim of this study was to investigate the bio-adsorption using modified zeolite with Mg (Mg-zeolite) in the dyeing wastewater treatment. Mg-zeolite adsorbed successfully 100% of the color, suspended solid (SS). chemical oxygen demand (COD), biological oxygen demand (BOD), total nitrogen (TN) and total phosphorus (TP) in the dyeing wastewater at the following optimal Mg-zeolite loading: 20 mg/L for colour, SS, TN and TP, 30 mg/L for BOD and COD. These results indicated that the amount of 1 mg/L Mg-zeolite adsorbed 11.6 mg/L for color, 9.5 mg/L for SS, 45.0 mg/L for COD, 12.7 mg/L for BOD, 0.91 mg/L for TP and 2.25 mg/L for TN. The bio-adsorbent, Mg-zeolite, can be a promising adsorption due to its high efficiency and low dose requirements.

• Proceeding of EDISON Challenge
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• 2013.04a
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• pp.224-227
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• 2013

본 연구에서는 S/D이 n+/n+로 구성된 CNT-MOSFETs, 금속으로 이루어진 SB-CNTFETs와 p+/n+로 구성된 CNT-TFETs에 대한 각각의 $I_d-V_g$ 특성과 포텐셜 프로파일을 확인하였다. 그리고 각 소자의 특성 및 특징을 연구하고, 이 중에서 BTB에 가장 큰 영향을 받는 CNT-TFETs의 특성을 $V_{DS}$, 분자 비대칭성과 $T_{ox}$에 따른 특성 변화를 연구하였다. 그 결과 예상과 다르게 오히려 작은 $V_{DS}$와 큰 $E_g$을 가질 때, 향상된 SS를 가진다는 것을 확인 할 수 있었다. 특히, (7,0) CNT-TFETs에서 비록 $I_d$는 작지만, SS를 57mV/dec까지 개선할 수 있었다. 또한, $T_{ox}$를 얇게 하면, 비록 60 mV/dec 이하의 결과는 보여주지 못했지만, SS와 Ion 모두 개선할 수 있음을 확인할 수 있었다.

• Journal of Veterinary Science
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• v.21 no.1
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• pp.11.1-11.7
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• 2020

The increase in canine skin and soft tissue infections, such as pyoderma and otitis, caused by Staphylococcus schleiferi strains, is of significant zoonotic concern. In this study, we report the first complete genome sequence for a methicillin-resistant clinical isolate of S. schleiferi (MRSS) designated as SS4, obtained from a dog with otitis externa, in Korea. The genome of SS4 strain was of 2,539,409 bp and presented high G+C content ratio (35.90%) with no plasmid. Comparative analysis of SS4 genome revealed that it is closely related to 2142-05 and 5909-02 strains isolated from the canine skin infections in the USA.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.6
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• pp.2872-2878
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• 2011

In spite of high concentrations of SS(>30mg/l) in July 2010, the water condition of Manripo was fine for swimming as COD data lower than 2.0mg/l in summer continuously. The bloom of phytoplankton or red tide were not occurred in the waters. COD data from the waters of Daechon were lower than 2.0mg/l, except August. Relatively high SS concentrations were the characteristics of Daechon beach and were caused by the effects of mud resuspension. The dominant taxa of phytoplnkton communities were consist of diatoms as the normal groups of neritic sea waters.