• Title/Summary/Keyword: Priming time

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High Speed Driving Technique in AC PDPs

  • Shin, Bhum-Jae
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08b
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    • pp.1181-1184
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    • 2007
  • The new self-priming addressing driving scheme was proposed to improve an address discharge time lag. It utilizes the priming effect maintaining the priming ramp discharge during an address period and the address discharge time lag is significantly improved. In this study, the basic characteristics of the priming ramp discharge are presented.

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A New High Speed Addressing Method Using The Priming Effect in AC PDP

  • Kim, Jae-Sung;Yang, Jin-Ho;Kim, Tae-Jun;Whang, Ki-Woong
    • 한국정보디스플레이학회:학술대회논문집
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    • 2003.07a
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    • pp.105-108
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    • 2003
  • A new high speed addressing method is proposed to reduce the addressing time below lus per line in AC PDP. In this method, the priming discharge is used to achieve a high speed addressing without adding an auxiliary electrode. Two different types of priming discharges were studied to achieve a high speed addressing and also reduce the inherent light output caused by the priming discharge in order to improve the contrast ratio characteristics. In the panel experiment, the addressing was successfully done with a lus address pulse width in the new method and the better contrast ratio was achieved in the Y-A priming rather than the Y-X priming case even though the reduction of the address period was smaller than that of the Y-X priming due to the extra address time for the priming discharges.

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Studies on High Speed Addressing Driving Scheme using the Priming Effect in Plasma Display Panel (하전 입자 효과를 이용한 Plasma Display Panel의 고속 구동 파형에 관한 연구)

  • Shin, Bhum-Jae;Park, Sang-Sik
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.23 no.2
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    • pp.45-52
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    • 2009
  • This study is related to the realization of high speed address driving method for Full-HD PDP. The new self-priming addressing(SPA) driving scheme was proposed to improve an address discharge time lag, which utilizes the priming effect maintaining the priming discharge during an address period. In this study, the basic characteristics of the priming ramp discharge were investigated and optimize the reset pulse and priming pulse. It is noted that the address discharge time lag is significantly improved from 1.2[${\mu}s$] to 0.8[${\mu}s$] when the slope of the priming ramp pulse is below 0.1[$V/{\mu}s$].

Optimum Water Potential, Temperature, and Duration for Priming of Rice Seeds

  • Lee, Suk-Soon;Kim, Jae-Hyeun;Hong, Seung-Beom;Kim, Min-Kyeong;Park, Eui-Ho
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.43 no.1
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    • pp.1-5
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    • 1998
  • Experiments were carried out to find out the optimum water potential, temperature, and duration for the priming of rice seeds, Oryza sativa L. (cv. Ilpumbyeo) for better germination at sub-optimal temperatures. Seeds were primed in 0, -0.2, -0.4, -0.6, -0.8, and -1.0 MPa PEG (polyethylene glycol) solutions at $25^{\circ}C$. The optimum water potential for seed priming, the highest water potential at which rice seeds did not germinate, was -0.6 MPa. To find out optimum priming temperature and duration rice seeds were primed in -0.6 MPa PEG solution and 0 MPa (water as a control) for various durations at 15 and $25^{\circ}C$ and the seeds were germinated at 17, 20, and $25^{\circ}C$. Considering germination rate and speed, the optimum priming time in water (0 MPa) was 4 days at 15$^{\circ}C$ and 1 day at $25^{\circ}C$, while 4 days was the optimum priming time in a -0.6 MPa PEG solution, regardless of the priming temperature. Priming reduced the actual time of germination, especially at sub-optimal temperatures. Priming did not affect germination rate in -0.6 MPa PEG solution at 15$^{\circ}C$, but overpriming reduced the final germination rate in water at 15$^{\circ}C$ and in -0.6 PEG solution at $25^{\circ}C$. Total sugars and $\alpha$-amylase activity induced during the seed priming were negatively correlated with the final germination rate and there was no noted relationship with the speed or uniformity of germination.

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Germination Characteristics of PEG Priming Seed in Barley (Hordeum vulgare L.) (PEG로 프라이밍 된 보리(Hordeum vulgare L.)종자의 발아특성)

  • 이성춘;박문수;배창휴
    • Korean Journal of Plant Resources
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    • v.15 no.1
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    • pp.18-25
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    • 2002
  • These experiments were conducted to evaluate the variability of seed germination, and seedling growth of PEG priming barley. The average germination percentage(AGP) of PEG priming seed was higher than control, but those were low with extend the treatment period. The AGP of washing seed after PEG priming was higher than unwashed seed, and that of redried seed after priming was lower than control. The germination time of priming seed was short compare to control seed, and that was prolonged with extend the priming period, and that of washing seed after priming was shortening, and that of redried seed after priming was prolonging. The emergence percentage(EP) of priming seed was higher than control, and the emergence time was shortest in 50% field moisture capacity soil. The seedling and root length of priming seed was shorter than control.

Effect of Priming Conditions on Enhancing Germination of Onion (Allium cepa L.) Seeds (Priming 조건이 양파 종자의 발아율 향상에 미치는 영향)

  • Cho Sang-Kyun;Seo Hong-Yul;Oh Young-Jin;Shim Kang-Bo;Choi Kyeong-Gu;Lee Sheong-Chun
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.51 no.3
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    • pp.191-198
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    • 2006
  • Priming of seeds in 150 mM KCI at $10^{\circ}C$ for 6 days was most effective in increasing germination rate and shortening germination time. Germination rate of primed seeds was increased to 96% which is about 14% higher than that of non-primed seeds. Germination temperature for better priming effects from primed onion seeds was 10 to $15^{\circ}C$ which is relatively lower than that of normal germination temperature of $20^{\circ}C$. Drying primed seeds at $20^{\circ}C$ for 5 hours resulted in best priming effects.

A Study on the Characteristics of Priming Discharge in the PDPs (PDP의 프라이밍 방전특성에 관한 연구)

  • 손현성;채승엽;염정덕
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2002.11a
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    • pp.29-33
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    • 2002
  • Period which does an electric condition of panel in reset in the driving method of PDP is reset period. This research experimentally analyzed the priming discharge characteristic of reset period. The amount of wall charge and the accumulation time accumulated by priming discharge are unrelated to width of priming pulse. And, self-erase discharge has the relation in the amount of wall charge by priming discharge. Then, it relates also to space charge generated by priming discharge. Moreover, space charge which helps self-erase discharge exists to about 22$mutextrm{s}$ after generating priming discharge. And, it is suitable within 12$mutextrm{s}$ of priming pulse width for efficient reset.

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Optimum Conditions for Tobacco Seed Priming by PEG 6000

  • Tai-Gi, Min;Byung-Moon, Seo
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.44 no.3
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    • pp.263-266
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    • 1999
  • Tobacco (Nicotiana tabacum L. ‘KF109’) seeds were primed in polyethylene glycol 6000 (PEG 6000) solutions to determine a) what osmotic potential of the solution would be optimal for priming, i.e., critical potential level for preventing germination, and b) what temperature and duration would be the most effective in priming. The germination was completely prevented below -0.8 MPa of PEG 6000, that indicates a optimum water potential for seed priming. Seeds were primed for 0, 1, 2, 3, 5, 10 and 15 days at 15, 20 and $25^{\circ}C$, respectively, under the-0.8 MPa PEG 6000 solution to find out the most effective temperature and duration for priming. The effectiveness of priming, particularly in germination speed, was observed more distinctly when the primed seeds were germinated at 15$^{\circ}C$ than 2 5$^{\circ}C$. The greatest reduction of the time to 50% germination (T/sob 50/) was when the seeds were primed at $25^{\circ}C$. The reduction rate of the $T_{50}$ was rapid when primed from 1 day to 8 days and then slowed down in the seeds primed for longer than 8 days. The time from 10 to 90% germination ( $T_{10-90}$ increased in the primed seeds for longer than 8 days which showed the reversed effect of synchronous germination. However, $T_{50}$ was reduced continuously in the seeds even primed over 8 days. Thus, the optimum condition for tobacco seeds priming with PEG 6000 solution was -0.8 MPa in osmotic potential of the solution at $25^{\circ}C$ for 8 days.ays.

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Influence of Delay Time and Priming Location on the Blast-Induced Ground Vibration (발파공 사이의 지연시차와 기폭위치가 지반진동에 미치는 영향)

  • Kang, Choo Won;Ryu, Bok Hyun;Choi, Tae Hong
    • Tunnel and Underground Space
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    • v.24 no.1
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    • pp.97-109
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    • 2014
  • In order to identify the characteristics of the propagation depending on delay time (20, 25 ms) and priming location (top priming, middle priming, bottom priming), test blasts were carried out a total of 4 times using different spacing, burden, drilling length, charge per delay and was derived the formula to predict blast vibration. This study investigated the characteristics of vibration by analysis of the nomogram and prediction of Peak Particle Velocity (PPV) from delay time and priming location by the formula to predict ground vibration. And it analyzed the trends of vibration increase by standards charge 0.5, 1.6, 5, 15 kg. Standards charge is "Blasting design and construction guidelines to road construction" by the Ministry of Land, Infrastructure and Transport. Depending on the charge in favor of vibration control method is proposed. Thus, when the design was to be used as a variable.

Effect of Seed Priming Treatment on the germination of Sesame

  • Shim, Kang-Bo;Cho, Sang-Kyun;Hwang, Jung-Dong;Pae, Suk-Bok;Lee, Myoung-Hee;Ha, Tae-Jung;Park, Chang-Hwang;Park, Keum-Yong;Byun, Jae-Cheon
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.54 no.4
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    • pp.416-421
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    • 2009
  • This experiment was conducted to find out optimum priming treatment conditions to the sesame seed as a preliminary study for enhancing sesame germination properties. Effective priming agents and concentrations for sesame seed were $K_3PO_4$, 200 mM and PEG6000, -1.0 MPa respectively. Optimum priming temperature and duration were $15^{\circ}C$, 4 days in view of germination speed and germination percentage. PEG6000 with -1.0 MPa was selected as an efficient priming treatment condition at $15^{\circ}C$, 4 days. This study suggested that priming treatment to sesame seed would be an effective technique enhancing sesame seed germination and shortening time to the $T_{50}$ at the field condition, but the efficiency of priming treatments to the sesame seed would be strongly dependent on individual or integrated conditions of priming agent, concentration, temperature and duration etc.