• 한국초지조사료학회지
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• 제16권1호
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• pp.87-92
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• 1996

The quality of silages, made from whole crop barley, rye, spring oat, Italian ryeglass, orchardgrass, alfalfa and grass-legume pasture mixtures, were evaluated under two different conservation techniques in baled silage making (BS) and conventional silages(CS). Crops materials were harvested at the stage of the greatest dry matter accumulation(hard dough for barley, soft dough for rye and oat, late bloom for Italian ryegrass and others pasture species), and baled in a self constructed square baling chamber weighted by 25~30kg in dry matter basis. Each bales were wrapped with 0.05mm thick polyethylen plastic film and stored six months long in stack silos. Barley, rye, oat and Italian ryegrass including of pasture crops produced higher quality silages in the baled silage making, due to better organic acid fermentation and lower nutrient losses during the period of storage than those in the conventional silages. TDN contents of barley silages were 65.3% in BS and 63.7% in CS, NEL value of barley silages was improved hum 6.48MJ(CS) to 6.61MJ/kg(BS) in dry matter basis. Silage quality of rye, oat and pasture crops were also improved markedly in the baled silage utilization.

• 한국잠사곤충학회지
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• 제6권
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• pp.31-33
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• 1966

본보는 Polyethylene대에 저견한 고치와 면대에 저견한 것을 수개월간에 걸쳐서 조사시험한 것으로서 그 결과는 다음과 같다. 1. 살용견은 재건시까지 Polyethylen대에 저장하여 옥외에 방치할 수 있다. 2. Polyethylene대에 저견한 것은 면대저견한 것의 생계량비율보다 약 0.5% 증가되었다. 3. 본 대장으로 곰팡이 해를 방지할 수 있었다. 그러나 서해는 방지할 수 없었다. 4. 본 대장견은 면포대장견보다 수시렁이 유인이 다소 있으나 나프타린 방충제를 대대직전에 견대에 넣으므로서 방지할 수 있다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.1352-1353
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• 2008

In this study, aluminium - doped zinc oxide (ZnO:Al) transparent conducting film was deposited on PET(polyethylen terephthalate) substrate by r.f. magnetron sputtering method. PET substrate was surface-treated in an atmospheric pressure DBD(dielectric barrier discharge) plasma to increase deposition rate and to improve electrical propesties. Morphological changes by DBD plasma were obsered using contact angle measurement. The contact angle of water on PET was reduced from 62$^{\circ}$ to 42$^{\circ}$ by DBD plasma surface treatment. The plasma treatment also increased deposition rate and electrical propesties. The electrical resistivity as low as $4.97{\times}10^{-3}[{\Omega}-cm]$ and the deposition rate of 234[${\AA}$-m/min] were obtained in ZnO:Al film with surface treatment time of 5min, and 20min., respectively.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2007년도 추계학술대회 논문집
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• pp.444-445
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• 2007

IZO/Al multilayer anode films for flexible top emitting organic light emitting diodes (TOLEDs) were grown on PEN (polyethylen-enaphthelate) substrate using twin target sputter (TTS) system. To investigate electrical and optical properties of IZO/Al multilayer films, 4-point probe method and UV/Vis spectrometer were used, respectively. From a IZO/Al multilayer films with 100nm-thick Al, sheet resistance of $1.4{\Omega}/{\square}$ and reflectance of above 62% at a range of 500~550nm wavelength could be obtained, In addition, structural and surface properties of IZO/Al multilayer films were analyzed by XRD (X-ray diffraction) and FESEM (field emission scanning electron microscopy) and AES (auger electron spectroscope), respectively. Moreover, flexibility of IZO/Al multilayer anode films were examined by bending test method.

• Journal of the Korean Wood Science and Technology
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• 제45권2호
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• pp.139-146
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• 2017

This study was conducted to develop a new drying technology in order to quickly and massively dry bamboo tubes without crack and check. The bamboo tubes with the diameter of 45 mm - 68 mm had been impregnated in the solution of PEG-1000, and then were dried under room temperature and high temperature, respectively. The cracks occurred on all control specimens while no cracks were found on PEG treated specimens during drying at room temperature due to effect of PEG restraining the circumferential shrinkage of bamboo tube. But the drying period of this method was too long (200 days) compared to 10 hours of kiln drying. During fast high temperature drying, cracks occurred on all control specimens, but no cracks were found on PEG treated specimens, which could be accounted for more solidified PEG due to higher drying temperature and faster drying rate, and the tension set formed on the surface of bamboo tube in the early stage of drying owning to high drying temperature and low relative humidity. Thus, it is advised that PEG treated bamboo tube should be fast dried at high temperature in order to not only prevent crack or check in short drying period but also increase the dimensional stability of the products made of bamboo tubes.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2008년도 춘계학술대회 논문집 센서 박막재료연구회 및 광주 전남지부
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• pp.45-49
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• 2008

Polyethylene is widely used as the insulator for power cable. To investigate the conduction mechanism for power cable insulation under ac high field, it is very important to acquire the dissipation current under actual running field. Recently, we have developed the unique system, which make possible to observe the nonlinear dissipation current waveform. In this system, to observe the nonlinear properties with high accuracy, capacitive current component is canceled by using inverse capacitive current signal instead of using the bridge circuit for canceling it. We have already reported that the dissipation currents of $40\;{\mu}m$ thick LDPE film at 10 kV/mm and over 140 Hz, it starts to show nonlinearity and odd number's harmonics were getting large. To investigate the conduction mechanis ms in this region, especially space charge effect, various kinds of estimation, such as time variations of instantaneous resistivity for one cycle, FFT spectra of dissipation current waveforms and so on, has been examined. As the results of these estimations, it was found that the dissipation current will depend on not only the instantaneous value of electric field but also the time differential of applied electric field due to taking a balance between applied field and internal field. Furthermore, two large peaks of dissipation current for each half cycle were observed under certain condition. In this paper, to clarify the reason why it shows two peaks for each half cycle, the film thickness dependences of dissipation current waveforms were observed by using the three different thickness LDPE films.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2004년도 추계학술대회 논문집 Vol.17
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• pp.97-102
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• 2004

용액 중에서 나노입자의 전기영동 특성을 이용한 전자종이용 잉크 제조를 위해 $TiO_2$ 나노입자를 저유전율 용매인 cyclohexane에 혼합한 후 용매와 용질의 비중차를 줄이기 위해 분말 상 polyethylen을 첨가하여 high energy milling의 방법으로 입자분쇄와 동시에 입자 표면에 고분자 풍을 코팅하였다. 용액내의 입자 분산성 향상과 용매 착색을 위하여 계면활성제와 oil-blue N을 첨가한 후 전자종이용 잉크를 제조하여 측정한 제타 전위 결과 cyclohexane 내에서 $TiO_2$의 제타전위는 -40mV 정도였으나 polyethylene으로 코팅한 후 계면활성제를 첨가하였을 경우 최대 -110mV 이상의 높은 값을 나타내었다. 실제 디스플레이 특성을 평가하기 위해 포토리소그래피를 이용하여 3인치 크기의 ITO glass 위에 $10{\mu}m$의 크기를 갖는 십자형의 격벽을 $40{\mu}m$의 높이로 균일하게 형성한 후 합성된 전자잉크로 주입하여 상부전극과 하부전극사이에 UV 경화제를 도포하여 UV 접합을 실시하였다. 격벽 내에서 입자의 mobility를 측정하여 환산된 전자잉크의 응답속도는 0.1cm/sec로 측정되었으나, 전기영동시 입자들의 움직임에 따른 반사광의 파형을 측정한 경우 0.07cm/sec의 응답속도를 나타내었다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.1260-1261
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• 2008

Aluminium doped zinc oxide (ZnO:Al) thin film has emerged as one of the most promising transparent conducting electrode in flat panel displays(FPD) and in photovoltaic devices since it is inexpensive, mechanically stable, and highly resistant to deoxidation. In this paper ZnO:Al thin film was deposited on the polyethylene terephthalate(PET) substrate by the capacitively coupled r.f. magnetron sputtering method. Wide ranges of bias voltage, -30V${\sim}$45V, was applied to the growing films as an additional energy instead of substrate heating, and the effect of positive and negative bias on the film structure and electrical properties of ZnO:Al films was studied and discussed. The results showed that a bias applied to the substrate during sputtering contributed to the improvement of electrical properties of the film by attracting ions and electrons in the plasma to bombard the growing films. These bombardments provided additional energy to the growing ZnO film on the substrate, resulting in significant variations in film structure and electrical properties. The film deposited on the PET substrate at r. f. discharge power of 200 W showed the minimum resistivity of about $2.4{\times}10^{-3}{\Omega}-cm$ and a transmittance of about 87%.

• Journal of Plant Biotechnology
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• 제39권2호
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• pp.93-98
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• 2012

본 연구는 소나무의 삼투압제 종류 및 농도, gelrite 농도에 따른 체세포배 발생 및 abscisic acid (ABA) 농도, 배발생 조직 라인에 따른 체세포배 발아 효과를 조사하기 위해 수행되었다. 삼투압제 종류 및 농도에 따른 체세포배 발생비교에서 최대의 체세포배 유도 수는 0.1 M maltose+3.75% polyethylen glycol (PEG) 4000 처리구에서 45개 (/90 mg FW)로 나타났으며, 0.2 M maltose 처리구 또한 41개로 효과가 있었다. Gelrite 농도에 따른 체세포배 발생비교에서 0.4 및 0.6%의 농도에서는 전혀 체세포배가 유도되지 않았으며, 0.8% 이상의 농도부터 체세포배가 발생되는 경향을 보였다. 최대 체세포배 유도 수는 1.0% gelrite에서 41개로 가장 높은 유도 수를 보였으며, 0.8 혹은 1.2%에서의 농도에서 또한 각각 37.3 및 39.7개로 높은 유도수를 보여 0.8% gelrite 이상에서 체세포배 유도 효과가 있었다. ABA농도, 배발생조직 라인 및 활성탄 첨가에 따른 체세포배 발아율 비교에서 06-6조직라인의 경우 150 혹은 $200{\mu}M$ ABA 처리구 유래 체세포배를 0.2% 활성탄첨가 배지에서 배양한 경우 45%의 최대 발아율을 보였다. 활성탄 무첨가 배지의 경우 최대 발아율은 06-6라인, $250{\mu}M$ ABA 처리구 유래 체세포배에서 28.9%로 나타났다.

• 한국식품영양과학회지
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• 제11권3호
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• pp.41-46
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• 1982

은기(銀寄) 옥광(玉光) 축파(筑波) 3품종(品種)의 밤의 저장성(貯藏性)을 구명(究明)하기 위하여 움저장(貯藏), polyethylene film 포장저장(包藏貯藏), 상자저장(貯藏), 방사선조사저장(放射線照射貯藏)을 행(行)하여 저장기간(貯藏期間) 동안 화학성분(化學成分) 변화(變化), 부패율(腐敗率), 발아율(發芽率)에 대하여 조사(調査)한 결과(結果)는 다음과 같다. (1) 원료(原料)밤의 화학성분(化學成分)은 수분(水分) 59$\sim$63%, 총당(總糖) 28$\sim$29% 환원당(還元糖) 0.1$\sim$0.2% 조직유(粗織維) 0.6$\sim$0.9% 조단백질(粗蛋白質) 3.5% vitamin C 27$\sim$28mg% 탄닌 50$\sim$58mg%이었다. (2) 총당(總糖)과 vitamin C 함량(含量)은 저장기간(貯藏期間) 동안 감소(減少)하였으며 환당(還糖)과 tannin은 증가(增加)하였다. (3) 발아율(發芽率)은 축파(筑波)가 저장기간(貯藏期間)동안 은기(銀寄)나 옥광(玉光)에 비해 현저히 감소(減少)하였으며 6개월(個月) 저장시(貯藏時) 움저장(貯藏) 93$\sim$100%, 상자저장(貯藏) 35$\sim$57% 방사선조사저장(放射線照射貯藏) 1$\sim$4%였고 polyethylene film 포장저장(包藏貯藏)은 전혀 발아(發芽)되지 않았다.(4) 부패율(腐敗率)은 축파(筑波)가 저장기간(貯藏期間)동안 은기(銀寄)나 옥광(玉光)보다 낮았고 6개월간(個月間) 저장(貯藏)했을 때 상자저장(貯藏) 4$\sim$6%, 방사선조사저장(放射線照射貯藏) 7$\sim$12%, polyethylene film 포장저장(包藏貯藏) 5$\sim$8% 그리고 움저장(貯藏) 30$\sim$54%였다.