• Asian-Australasian Journal of Animal Sciences
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• 제21권8호
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• pp.1196-1200
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• 2008

An experiment was conducted to evaluate the physiological changes of laying hens subjected to feed removal during induced molting while received probiotics in the drinking water. Post-molt performance and egg quality criteria were also studied. Ninety 78-week-old Hy-line W36 laying hens were divided into two treatment groups according to equal body weight and subjected to induced molting by continuous feed removal until around 30% BW reduction. The experiment lasted 12 wks consisting of 4-wk molting and 8-wk post-molt periods. Treatment 1 received no probiotics and was considered as the control. Treatment 2 was similar to the control except that hens received probiotics in the drinking water at 400 mg/L during feed deprivation. The results indicated that hens in both groups went out of production by Day 5. However, hens received probiotics reached 5 and 50% egg production sooner than the control (30 and 52 days vs. 31 and 54 days). Starvation during molting increased heterophil to lymphocyte (H/L) ratio, hematocrit and plasma T4 and $Na^+$ levels while plasma T3 and Cl- levels were decreased. Probiotics had no significant impact on BW reduction during molt. Post-molt egg production and egg mass were higher in hens which previously received probiotics, but these responses were not significant. However, feed conversion ratio was significantly better in hens which received probiotics. Hematocrit, plasma thyroid hormone concentrations (T3 and T4) and plasma $Na^+$, $K^+$ and Cl- levels during molting were not significantly influenced by supplementation of probiotics. However, H/L ratio showed a significant (p<0.05) reduction in birds which received probiotics suggesting beneficial effects of this product for feed-deprived laying hens. No significant difference was observed in post-molt egg quality criteria.

• 한국진공학회지
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• 제7권3호
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• pp.167-272
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• 1998

ECR plasma CVD를 이용한 SiOF박막은 낮은 유전상수를 가지고 있으며, 기존의 공정과의 정합성이 우수해 다층배선 공정에 채용이 유망한 재료이지만 수분의 흡수로 인한 유전율의 상승과 후속공정의 안정성이 문제점으로 부각되고 있다. 따라서 본 연구에서는 SiOF박막의 내흡습성과 후속공정에서의 안정성을 향상시키기 위하여 SiOF박막을 증착한 후 후속 산소 플라즈마 처리를 행하였다. SiOF박막은 산소 플라즈마 처리를 수행함으로써 SiOF박막의 밀도가 증가하고, 수분과의 친화력이 강한 Si-F 결합이 감소하는 것이 주요한 원인으로 사료된다. 하지만 플라즈마 처리 시간이 5분 이상으로 증가하면 유전율의 증가가 일어난다. 따라서 본 실험에서는 산소 플라즈마 처리조건이 마이크로파 전력이 700W, 공정 압력이 3mTorr, 기판온도가 $300^{\circ}C$일 경우 플라즈마 처리시간은 3분이 적당한 것으로 생각 된다.

• 한국어병학회지
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• 제33권1호
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• pp.91-95
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• 2020

Fish bacterial diseases have spread and caused serious problem for cultured marine fish in Korea. The important bacterial disease affecting mariculture such as olive flounder (Paralichthys olivaceus) are caused by Edwardsiella tarda, Vibrio scophthalmi and Streptococcus parauberis. For the bacterial disease protection in aquaculture industry, the water treatment is needed in aquaculture system. During the last decades atmospheric pressure non-thermal plasma in contact with liquids have received a lot of attention of environmental and medical application. In this study, we determined the disinfectant effect in seawater and three major fish bacterial disease pathogens by using low frequency plasma treatment. Three fish bacteria (E. tarda, V. schophthalmi, S. parauberis) were not detected within 16 min, 150 min and 270 min of 20 L, 500 L and 1 ton seawater post low frequency plasma treatment, respectively. Three major fish bacterial disease pathogens were not detected within 2 min after the low frequency plasma treatment, suggesting that the low frequency plasma possess disinfectant effectiveness.

• 반도체디스플레이기술학회지
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• 제10권4호
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• pp.43-46
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• 2011

In this study, we investigated the effects of the post Ar plasma treatment at different RF powers for various durations on electrical, structural, and optical properties of relatively thin Al-doped zinc oxide films. The sheet resistance was observed to decrease rapidly for the first 5min, beyond which the resistance apparently saturated. As the RF power increased, the grain size and the interplanar distance of (002) planes also increased. The observed decrease in sheet resistance was stated to be a consequence of Al and/or Zn interstitials as well as grain growth. It was also found that Ar plasma treatment increased the transmittance of Al-doped zinc oxide films in most of the visible light range below the blue light.

• 한국진공학회지
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• 제19권4호
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• pp.275-280
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• 2010

MOCVD (Metal-Organic Chemical Vapor Deposition) 장비를 사용하여 BZO (boron doped zinc oxide, ZnO:B) 박막을 증착하고 수소 플라즈마 처리공정을 진행하였다. 본 연구는 수소 플라즈마 처리된 BZO 박막에 산소 플라즈마 재처리를 진행하여 BZO 박막의 특성 변화를 분석하였다. 그 결과 BZO 박막 성장은 (100), (101), (110)을 확인하였고, 산소 플라즈마 재처리에 의하여 일함수와 표면 저항이 증가하였다. 수소 플라즈마 처리만을 진행한 BZO 박막과 산소 플라즈마 재처리 공정을 진행한 BZO 박막의 300~1,100 nm에서 가중치 투과율은 86%로 변화하지 않았으며, 가중치 산란도는 12%에서 15%로 증가하였다.

• 한국표면공학회:학술대회논문집
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• 한국표면공학회 2006년도 추계학술발표회 초록집
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• pp.66-66
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• 2006

• Journal of Korean Vacuum Science & Technology
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• 제2권1호
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• pp.25-31
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• 1998

The reliability of fluorine doped silicon oxide (SiOF) films for intermetal dielectrics in multilevel interconnections of ultra-large scale integrated circuits (ULSIs) is investigated. SiOF films were deposited by electron cyclotron resonance plasma-enhanced chemical vapor deposition (ECRPECVD) using H-free source gases, i.e., SiF4 and O2. The effect of post plasma treatment on the moisture absorption and dielectric properties of SiOF films was carried out I terms of air exposure time, The reliability test of Cu/TiN/SiOF/Fi specimen was carried out in terms of temperature by rapid thermal annealing (RTA) in N2 ambient. After O2 plasma treatment,, no appreciable peak directly related to moisture absorption was detected. The capacitance-voltage (C-V) characteristics of the O2 plasma treated SiOF film showed that the film remained to hold the sound dielectric properties even after boiling treatment. The Cu/TiN/SiOF/Si system was found to be reliable up to $600^{\circ}C$.

• 보존과학회지
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• 제30권3호
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• pp.299-306
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• 2014

귀중한 보존물, 예술품, 증거서류 등의 오염에 의한 훼손을 복원하는 기술의 일환으로 아르곤을 이용한 저온 플라즈마 표면처리법의 적용 가능성을 산소 플라즈마 표면처리법과 비교 조사하였다. 이러한 목적으로 인위적 오염물인 brilliant green으로 염색된 셀룰로오스 아세테이트와 카본으로 코팅된 백상지에 아르곤 플라즈마와 산소 플라즈마로 처리했을 때, 색도계를 이용하여 색도변화를 측정한 후 ${\Delta}E^*ab$ 값의 변화와 표면형태의 변화로써 brilliant green과 카본 제거효과를 조사하였다. 오염물 제거효과는 산화반응에 근거한 산소 플라즈마가 스퍼터링에 의한 아르곤 플라즈마에 비해서 효과적이었으나 모재의 심각한 손상을 유발하였고 플라즈마 후반응에 의한 추가적인 모재의 손상이 예상되었다. 반면에 아르곤 플라즈마는 산소 플라즈마에 비해서 열세하였으나 모재의 손상이나 후반응에 대하여 무시할 수 있었으며 섬세한 복원 작업에 오히려 적합할 것으로 판단되었다.

• 열처리공학회지
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• 제14권2호
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• pp.103-109
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• 2001

Plasma nitrocarburising and post oxidation were performed on SM45C steel using a plasma nitriding unit. Nitrocarburising was carried out with various methane gas compositions with 4 torr gas pressure at $570^{\circ}C$ for 3 hours and post oxidation was carried out with 100% oxygen gas atmosphere with 4 torr at different temperatures for various times. It was found that the compound layer produced by plasma nitrocarburising consisted of predominantly ${\varepsilon}-Fe_{2-3}(N,C)$ and a small proportion of ${\gamma}-Fe_4(N,C)$. With increasing methane content in the gas mixture, ${\varepsilon}$ phase compound layer was favoured. In addition, when the methane content was further increased, cementite was observed in the compound layer. The very thin oxide layer on top of the compound layer was obtained by post oxidation. The formation of Oxide phase was initially started from the magnetite($Fe_3O_4$) and with increasing oxidation time, the oxide phase was increased. With increasing oxidation temperature, oxide phase was increased. However the oxide layer was split from the compound layer at high temperature. Corrosion resistance was slightly influenced by oxidation times and temperatures.

• 사상체질의학회지
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• 제10권1호
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• pp.269-284
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• 1998

The purpose of this study was to investigate the effect of ILIB(Intravenous Laser Irradiation of blood) on Meridian-Heart Circulation CMP and Hyperlipidemia. Circulatory symptom of 20 patients was treated with ILIB. After 10 times' treatment, changes of total cholesterol, HDL-cholesterol, triglyceride and Meridian-Heart Circulation CMP value were observed. The results were as follows : 1. In observation of Meridian-Heart Circulation CMP value, significant increase was observed in both pre-ID generation and post-ID generation. So, distinctive observation between pre-ID generation and post-ID generation became not relatively significant. 2. In observation of Meridian-Heart Circulation CMP value, significant increase was observed in both left and right. So, distinctive observation between left and right became not relatively significant. 3. In observation of Meridian-Heart CMP value, significant increase was not observed in control group, but significant increase close to normal value was observed in treatment group after treatment of Intravenous He-Ne Laser Irradiation. 4. In observation of Meridian-Circulation CMP value, significant increase was not observed in control group, but significant increase close to normal value was observed in treatment group after treatment of Intravenous He-Ne Laser Irradiation. 5. In concentration of plasma total cholesterol and plasma triglyceride, significant decrease was not observed in control group, but significant increase was observed in treatment group after treatment of Intravenous He-Ne laser Irradiation. 6. Significant concentration change of plasma HDL-cholesterol was not observed in both control group and treatment group. From above results, it was thought that Intravenous He-Ne Laser Irradiation was significant effect on heart circulatory system in human body.