• Journal of Environmental Health Sciences
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• v.27 no.2
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• pp.51-59
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• 2001

Song stream is located in the upstream of the Namhan River. Normal times, the stream flows down to the east sea through the drainage pipe but at rainy season, it flows to the Namhan River. There are large stock farm, leisure town and cultivated land in this basin. The pollutants from these contamination source cause eutrophication at lake Doam and deterioration of water quality in namdai stream. In this case, this study was carried out to evaluate water quality and environmental capacity as well as economical efficiency of each industry. The basin shape factor of subject stream was 0.315, slope is higher than usual basin. The BOD, T-N and T-P productive contamination loading from each contamination source was 2,690, 974 and 194 kg/day, respectively, and major contamination source was stock farm and cultivated land. Annual BOD, T-N, T-P distribution(median value) of Song stream showed 1.0~2.2 mg/L, 3.16~5.85 mg/L and 0.024~0.197 mg/L Doam lake showed 1.1~1.9, 2.51~3.89 and 0.042~0.114 mg/L, respectively. Being compared of water quality at main stream between past and present, it showed that the water quality has improved since last five years. BOD improvement rate was 8~50%. Run off loading of BOD, T-N, T-P was 366, 1129, 17.2 kg/day, and run off rate was 13.6%, 86.2%, 11.3% respectively. Finally, the result of productivity survey of each industry, leisure town, cultivated land and large stock farm was 118, 46, 50 billion won, per T-P 1kg productive, and productivity portion was 100, 39, 42% respectively, and the highest economical efficiency industry was leisure facilities.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2004.11a
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• pp.802-805
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• 2004

It is requures to understand the meaning of sound and cultural background of target spaces for soundscape design. The purpose of this study is to derive the general soundscape preserved in the mind of Korean people. Four kinds of traditional Korean songs, that is to say, Sijo (Korean verse), folk-song, Pansori (song for drama by Chang reciter), and popular songs, were used as tools of research subjects. That is because the sounds expressed in literature are very useful subjects for soundscape survey. Paragraphs containing description of sounds were selected from the lyrics of the songs. Then 11 sound categories were named, and 13 meaning categories were classified according to referential and emotional aspects, respectively.

• Applied Chemistry for Engineering
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• v.8 no.5
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• pp.784-789
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• 1997

Aluminium solid electrolytic capacitor in which electroconducting polypyrrole(PPy) is used as an electrolyte is studied. Pyrrole(Py) is electrochemically synthesized using the etched and anodized aluminium foil electrode($Al_2O_3$) as an anode on which the thin layer of chemicalpolymerized PPy as a pre-coating layer is formed previously by chemical oxidative polymerization(CP). Investigating the effects of the polymerization conditions on the electrical characteristics of resulting capacitors, the capacitors which were obtained from the galvanostatic electrolysis of pyrrole containing sodium p-toluenesulfonate(TsONa) under the currents of $2.0{\sim}4.0mA/unit(6.5{\times}10mm)$, showed the most superior properties.

• 대한예방의학회:학술대회논문집
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• 1999.10a
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• pp.152-153
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• 1999

• Journal of Oriental Neuropsychiatry
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• v.8 no.1
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• pp.215-235
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• 1997

according to study of clinical document in relation to Neuropsychiatric disease in Ancient Chinese(Song, Keum, Won, Myung) clinical document the result were obtained as follows. 1. A main point is Jeul-Jin<切診> in diagnosis, that is Hyun-Maeg<弦脈> is liver disease, Whual Mag<滑脈> is gallbladder disease, Sag Mag<數脈> is fever.2. Doctors in Song<宋>, Keum<金>,Won<元> enumerationed many diseases are cause by emotion.3. Oriental psychotherapy that Diseases caused by surprising must be cure by surprising is like to systematic desensitization in Westem.4. Oriental psychotherapy that pseudopsychosis must be cure by patient rely on doctor is like to suggestive therapy in western.5. It is similar to suggestive therapy in western medicine that Sadness ,anguish and frustration induce disease.6. Headache is caused by fever, energy deficience and angry.7. Imsomnia is not caused by hsart disease, but gallbladder or liver.8. Schizophrenia is caused by shocking and a sort of fever.9. Epilepsy is caused by a sort of fever, shocking and fetal disease.10 Schizophrenia(in case of manic state) is caused by fever and shocking, and imaginary pregnancy is considered as schizophrenia.

• Journal of Broadcast Engineering
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• v.13 no.3
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• pp.380-387
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• 2008

This paper presents a karaoke system employing a vocal region detection algorithm based on the vocal characteristics. In the proposed system, an input song is classified into vocal and instrumental regions using the vocal region detection algorithm. Then, a vocal removal method is applied only to the vocal region. To detect vocal region, a classification algorithm is designed based on the vocal characteristics in the TICFT (twice iterated composite Fourier transform) domain. For vocal removal, vocal components are extracted from a band pass filtered vocal region and they are subtracted from the original song, yielding a vocal removed song. The performance of the proposed method is measured on four different songs.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.16 no.5
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• pp.119-130
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• 2013

The objective of this study was to analyze an availability of green roof soil based on the bottom ash soil and compost using sludge derived from food factory as comparing and analysing the growth of native plants. Analysing the physical properties and chemical resistance of 12 different type mixing soils which is mainly used in green roof, selected 4 types of soil, experiments were conducted to compare plant growth. The growth status of the plant showed the most superior of the soil 13(control), next soil 9(Pearlite : Bottom Ash : Compost = 20 : 60 : 20) and soil 10(Pearlite : Zeolite : Compost = 60 : 20 : 20) This result showed that native plants grow well in the soil based on the bottom ash and compost using sludge derived from food factory, and this soil type is determined that is available the green roof soil.

• Journal of Pharmaceutical Investigation
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• v.29 no.4
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• pp.315-321
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• 1999

Poly (lactide-co-glycolide) (PLGA) microspheres containing ovalbumin (OVA) as a model protein drug were prepared by double emulsification method, and various conditions such as mixing rate, volume of outer phase and isopropyl alcohol concentration in outer phase during secondary emulsification were observed to control the size of microspheres. In addition, entrapment efficiency of OVA and protein denaturation were also evaluated. As the rate of stirring was increased, the size of particles was decreased. But excessive stirring increased the particle size of microspheres. In a preparation condition of small volume of outer phase, the particle size was decreased but the entrapment efficiency was increased. Adding isopropyl alcohol to outer phase decreased the size of particles, but increased the entrapment efficiency. Microparticles should have smaller size than $10\;{\mu}m$ to be uptaked by Peyer's patch in small intestine. High speed of mixing and relatively small volume of outer phase are needed to reduce the size. In addition, appropriate amount of isopropyl alcohol in outer phase also plays an important role in size reduction of PLGA microspheres.

• Preventive Nutrition and Food Science
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• v.8 no.1
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• pp.79-84
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• 2003

This study was carried out to establish a method for determining if granule-type Ramen soup powder has been irradiated. Thermoluminescence (TL) and pulled photostimulated luminescence (PPSL) were used as the detection methods through observed changes of TL and PPSL intensities after storage under differing conditions. PPSL intensities increased with increases in irradiation doses. The threshold level of PPSL was below 412$\pm$58 photon counts regardless of storage conditions (room and darkroom) after 10 months. TL intensities also increased with increasing irradiation doses. The coefficients ($R^2$) of PPSL (0.74~0.94) and TL intensities (0.92~0.58) were very highly correlated with irradiation dose. The PPSL and TL intensities were decreased after 10 months of storage. These results indicate that discrimination of irradiated from non-irradiated granule-type Ramen soup powder is possible using TL and PPSL methods despite the decrease in intensities of TL and PPSL with increasing storage times.

• Tunnel and Underground Space
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• v.15 no.2 s.55
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• pp.137-144
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• 2005

An estimation technique of the joint diameter distribution using the least square method is suggested. When utilizing the technique by Song and Lee, the diameter distribution would be obtained only from the trace length distribution defined in an infinite window after the trace length distribution is estimated from the contained trace length distribution. With the new technique, however, the diameter distribution can be directly obtained from the sample histogram of the contained trace lengths. Compared with the previous technique, it shows a more accurate result for small sizes of joint samples and provides the joint geometry parameter of volumetric frequency. Verification of this new technique was completed by using Monte Carlo simulations.