• Asian-Australasian Journal of Animal Sciences
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• 제24권5호
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• pp.616-622
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• 2011

This study evaluated the fermentation characteristics and protein degradation dynamics of wet green tea grounds (WGTG) silage. The WGTG was ensiled with distilled water (control), or lactic acid bacteria (LAB), enzyme (E), formic acid (FA) and formaldehyde (FD) prior to ensiling. Three bag silos for each treatment were randomly opened at 0, 3, 7, 14, 28 and 60 days after anaerobic storage. For all the treatments, except for FA, there was a rapid decline in pH during the first 7 days of ensiling. LAB treatment had higher lactic acid content, lower ammonia-N ($NH_3$-N) and free-amino nitrogen (FAA-N) contents than other treatments (p<0.05). E treatment had higher lactic acid, water-soluble carbohydrates (WSC) and non-protein nitrogen (NPN) content than the control (p<0.05). FA treatment had higher $NH_3$-N and FAA-N content than the control (p<0.05). FD treatment had lower NPN and FAA-N content than the control, but it did not significantly inhibit the protein degradation when compared to LAB treatment (p>0.05). Results indicate that LAB treatment had the best effect on the fermentation characteristics and protein degradation of WGTG silage.

• 한국표면공학회지
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• 제37권6호
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• pp.313-318
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• 2004

Vertically-aligned and uniformly-distributed CuO nanowires were formed on copper-coated Si substrates by wet chemical process, immersing them in a hot alkaline solution. The effects of hydrogen plasma treatment on the field emission characteristics of CuO nanowires were investigated. It was found that hydrogen plasma treatment enhanced the field emission properties of CuO nanowires by showing a decrease in turn-on voltage, and an increase in emission current density, and stability of current-voltage curves. However, the excessive hydrogen plasma treatment made the I-V curves unstable. It was confirmed by XPS (X-ray Photoelectron Spectroscopy) analysis that hydrogen plasma treatment deoxidized CuO nanowires, thereby the work function of the nanowires decreased from 4.35 eV (CuO) to 4.1 eV (Cu). It is thought that the decrease in the work function enhanced the field emission characteristics. It is well-known that the lower the work function, the better the field emission characteristics. The results suggest that the hydrogen plasma treatment is very effective in achieving enhanced field emission properties of the CuO nanowires, and there may exist an optimal hydrogen plasma treatment condition.

• Composites Research
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• 제26권2호
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• pp.123-128
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• 2013

PVDF(polyvinylidene fluoride) 섬유는 습식방사방법을 적용하여 제조하였다. PVDF 분자 내 압전 특성과 밀접한 관련을 갖는 ${\beta}$형태의 결정 함량을 높이기 위하여, 본 연구에서는 습식방사 된 섬유에 1단계 연신, 2단계 어닐링 공정으로 구성하여 후 처리를 도입하였다. 후 처리는 PVDF 고분자의 유리전이 온도($T_g$)와 용융온도($T_m$) 사이의 온도범위에서 진행하여, 최대의 ${\beta}$형태 결정을 생성 할 수 있는 열처리 조건을 최적화 하였다. 제조된 PVDF 섬유 내 분자 배향 특성과 결정 구조를 확인하기 위하여 적외선 분광 광도계(FT-IR)와 X선 회절 분석기(XRD)를 이용하여 분석하였으며, 전자현미경(SEM)을 통하여 섬유의 표면을 관찰하여 섬유의 평균직경을 확인하였다. 분석 결과, 후 처리 공정이 PVDF 결정 구조의 영향을 미치며, ${\beta}$형태의 결정 비율을 증가시킨다는 것을 확인하였다. 더불어 ${\beta}$형태 결정 향상으로 인해 기계적 강도가 증가되었으며, 압전 특성 향상까지 기대할 수 있었다.

• 한방안이비인후피부과학회지
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• 제32권3호
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• pp.235-243
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• 2019

Objectives : The aim of this study is to report the effects of Yangdokbaekho-tang and Hwangryunhaedok-Tang wet dressing on the treatment of erythrotelangiectatic rosacea patient. Methods : A patient with Erythrotelangiectatic Rosacea treated with Yangdokbaekho-tang, Hwangryunhaedok-Tang wet dressing and acupuncture. We evaluated the score(frequency ${\times}$ intensity) of the hot flush, the main symptom of rosacea and NRS(numeral rating scale) for the subjective symptom. Results : After treatment, the score of the hot flush decrease from 20 to 6. the NRS changed and NRS score improved from 7 to 1. There are no adverse effects and no relapse of erythrotelangiectatic rosacea after 18 days of discharge. Conclusions : According to the result, Korean Medicine such as Yangdokbaekho-tang and Hwangryunhaedok-tang wet dressing can be effective for the treatment of erythrotelangiectatic rosacea.

• 고문화
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• 66호
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• pp.87-112
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• 2005

Stain removal on ivory has been, for a long time, considered an undesirable treatment in conservation field because ivory is hygroscopic and anisotropic, having different physical properties in different directions. Cyclododecane, which sublimes at room temperature, has been investigated for its use in conservation field since 1995, as a reversible temporary consolidant, sealing agent or coating, water repellent, and barrier layer. This research aims to remove stains on ivory, temporarily protecting the none-stained area or painted area from methanol, acetone or the aqueous cleaning system using cyclododecane as a hydrophobic sealing agent. This research also aims to obtain information regarding whether cyclododecane can be safely and effectively used on archaeological wet ivory. Melted cyclododecane and saturated solutions of cyclododecane in mineral spirits, and hexanes were applied to ivory samples. Application methods, working properties of cyclododecane on ivory, and effect of cyclododecane coating on moisture content of wet ivory were evaluated. The sealing layer formed by molten cyclododecane or by saturated cyclododecane solution in hexane or saturated cyclododecane solution in mineral spirits did not form a secure contact with the surface of the highly polished ivory. The sealing formed with two different layers, in which saturated cyclododecane solution in hexane was applied initially and then molten cyclododecane was applied over the first layer, was found to securely protect the painted area. When the wet samples were kept in 100% RH environments for a month, active mold growths were observed except in the samples sealed with molten cyclododecane. In conclusion, cyclododecane was an efficient hydrophobic sealing agent to protect painting area while cleaning stains on ivory. It also prevented mold growing on wet ivory and wet bone. Evenness of cyclododecane film on ivory will be determined in UV light. Analytical techniques will include visual observation, polarized light microscopy, Scanning Electron Microscope, and Gas Chromatography.

• 한국식품과학회지
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• 제32권4호
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• pp.828-833
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• 2000

흰떡과 생면의 저장성을 연장 시키기 위하여 주정 처리와 키토산 처리 및 주정과 키토산의 병용처리를 하여 저장기간에 따른 품질의 변화를 조사하였다. 흰떡의 경우 아무 처리를 하지 않은 대조구는 6일, 주정처리는 27일에 총세균수의 기준치인 $1{\times}10^{6}\;CFU/g$을 넘어섰으며 젖산 1% 용액을 사용한 경우는 20일에 $1{\times}10^{6}\;CFU/g$ 이상이 되었다. 그러나 키토산으로 처리했을 때에는 저장 76일 까지도 총세균수가 기준치 이하를 나타내어 주정처리를 한 경우보다 약 3배 정도의 저장성 연장 효과가 있음을 알 수 있었다. 생면의 경우 대조구와 주정처리구는 7일 만에 총세균수가 기준치를 넘었으며 키토산처리의 경우는 82일이 경과해도 $1{\times}10^{6}\;CFU/g$ 이하의 값을 나타내어 키토산 처리에 의한 저장성 연장 효과를 확인할 수 있었다.

• 헤리티지:역사와 과학
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• 제46권1호
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• pp.228-237
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• 2013

지류문화재는 유기질이라는 재질의 특성상 시간이 지나면서 여러 가지 복합적인 손상인자(물리적 화학적 생물학적 인위적 원인)에 의해 유물의 보존성에 영향을 받고 있다. 그리하여 그 손상 정도에 따라 적절한 보존처리를 실시하게 되는데 그중 유물의 오염원을 제거하는 습식클리닝 처리가 지류문화재를 구성하는 주 원료인 한지의 재질에 미치는 영향을 분석해 보고자 본 연구를 실시하였다. 분석방법은 공시재료로 인공열화지를 사용하였고 습식클리닝(침적식)을 적용하여 처리 전 후의 색차와, 내절강도를 분석하였다. 분석결과 습식클리닝(침적식)에 의한 색도의 변화와 내절강도는 30분 침적을 2회 반복 처리하였을 때 가장 높은 수치를 나타냈다. 따라서 이때가 클리닝의 효율과 재질의 안정성이 가장 양호함을 알 수 있었다.

• 대한약침학회지
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• 제25권3호
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• pp.224-232
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• 2022

Objectives: Routine therapies cannot control refractory stable angina, leading to a high economic burden and an impaired quality of life. Persian medicine incorporates exceptional attention to lifestyle and nutrition to prevent and treat various diseases. Previous studies have reported the analgesic and anti-inflammatory effects of wet cupping. The present study aims to determine the effects of nutrition and cupping on refractory stable angina patients. Methods: Forty male patients with refractory stable angina were randomly allocated to four groups, including nutrition modification based on Persian medicine, wet cupping, nutrition modification along with wet cupping, and control. The primary outcomes were the changes in pain score using a visual analog scale and quality of life using the Seattle angina questionnaire. The secondary outcomes were changes in the exercise test and blood pressure. Results: The results of the present study revealed that 30 days of treatment with nutrition modification based on Persian medicine, cupping, and modified nutrition and cupping along with standard treatment for stable angina significantly increased the patient's quality of life and exercise test results while reducing pain, and systolic and diastolic blood pressure. Conclusion: Applying complementary Persian medicine methods such as nutrition modification and cupping along with the classical medical treatments may improve outcomes for refractory stable angina patients.

• 대한한의학회지
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• 제29권3호
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• pp.161-168
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• 2008

We report the case of an 18-year-old woman with a 6-year history of widespread facial plane warts that had proved resistant to repeated treatments with laser therapy and imiquimod cream. The patient had recurrent lesions, which subsequently resolved with treatment. We diagnosed the case as heat and blood stasis and qi deficiency damp stagnation. Treatment with herb medication and herbal external wet dressing was initiated. During the 4-month treatment period, the warts resolved gradually. At 4 months follow up, there were no recurrent lesions and no other adverse effects.

• 환경위생공학
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• 제17권4호
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• pp.1-9
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• 2002

In order to define about concern with discharge and water-quality, it is calculated drought flow, low flow, normal flow and wet flow in Chungju watershed from flow duration analysis. Water quality modeling study is performed for forecasting at upstream of Chungju lake. It is devided method of modeling into before and after the equipment of environmental treatment institution. And it is estimated the change of water quality. Before the equipment of environmental treatment, BOD concentration is increased from 23000 to 2006 years at all site and decrease on 2012 years. The rate of increasing BOD concentration is showed height between 2000 years and 2003 years most of all site. And after the equipment of environmental treatment, it is showed first grade of BOD water quality in most of sample site beside Jucheon river. The result of water quality modeling using drought flow showed that a lot of pollution occurred. And water quality using wet flow is good, so much discharge make more improve water quality than little discharge.