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Flexible electronic-paper active-matrix displays

  • Huitema, H.E.A.;Gelinck, G.H.;Lieshout, P.J.G. Van;Veenendaal, E. Van;Touwslager, F.J.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2004.08a
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    • pp.141-144
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    • 2004
  • A QVGA active-matrix backplane is produced on a 25${\mu}m$ thin plastic substrate. A 4-mask photolithographic process is used. The insulator layer and the semiconductor layer are organic material processed from solution. This backplane is combined with the electrophoretic display effect supplied by SiPix and E ink, resulting in an electronic paper display with a thickness of only 100${\mu}m$. This is world's thinnest active-matrix display ever made.

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RELATION BETWEEN DIOPHANTINE TRIPLE AND ELLIPTIC CURVE

  • Park, Jinseo
    • Journal of the Chungcheong Mathematical Society
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    • v.33 no.2
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    • pp.227-236
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    • 2020
  • A set {a1, a2,, am} of positive integers is called Diophantine m-tuple if aiaj+1 is a perfect square for all 1 ≤ i < j ≤ m. In this paper, we find the structure of torsion group of elliptic curve Ek constructed by Diophantine triple, and find all integer points on Ek under assumption that rank(Ek(ℚ)) = 1.

Kinetics and Mechanism for Substitution of cis-[Co$(NH_3)_4$Cl($H_2O$)]$^{2+}$ and GlyOR (R = $C_2H_5$, $CH_3$, H) in Acidic Solution (Ⅰ) (산성용액내에서 cis-[Co$(NH_3)_4$Cl($H_2O$)]$^{2+}$ 와 GlyOR (R = $C_2H_5$, $CH_3$, H)과의 치환반응에 대한 속도론적 연구(Ⅰ))

  • Lee, Il Bong;Mun, Jin Hui;Park, Byeong Gak
    • Journal of the Korean Chemical Society
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    • v.38 no.10
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    • pp.719-725
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    • 1994
  • Kinetic studies were carried out for substitution reaction of $cis-[Co(NH_3)_4Cl(OH_2)]^{2+}(\mu$ = 0.75) with GlyOR (R = $C_2H_5$, $CH_3$, H) in pH 5 buffer solution at $20^{\circ}C$ by UV/Vis-spectrophotometry. We obtained cis-[Co$(NH_3)_4$Cl(glyOR)]$^{2+}$ as product. The reaction turns out to be first order for Co(III) and GlyOR, respectively. The rate constants are obtained as 9.21, 11.66 and 15.33 l${\cdot}\;mol^{-1}{\cdot}sec^{-1}$ for GlyOEt, GlyOMt and GlyOH, respectively. The activation parameters $E_a,\;{\Delta}H^{\neq}\;and\;{\Delta}S^{\neq}$ for GlyOEt were obtained as 65.77, 63.35 kJ/mol and -53.51(e.u.), respectively and were obtained as 70.91, 68.50 kJ/mol and -38.42(e.u.) for GlyOMt. In case of GlyOH, respectable values of 79.72, 77.30 kJ/mol and -26.59(e.u.) were obtained. On the basis of kinetic data and the observed activation parameters, we propose that the proper mechanism involves $S_N$2 step.

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Personality Type Test(MBTI) of Korean College Students with Symptoms of Temporomandibular Disorders (측두하악장애증상자의 성격유형검사(MBTI))

  • Park, Hye-Sook
    • Journal of Oral Medicine and Pain
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    • v.36 no.1
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    • pp.25-37
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    • 2011
  • The purpose of this study is to investigate the relationship between personality type and symptoms and contributing factors of temporomandibular disorders. 199 college students completed the MBTI(Myers-Briggs Type Indicator) and a questionnaire and collected data were analyzed by SAS 9.2 program. The obtained results were as follows : 1. The prevalence of symptoms of temporomandibular disorders and mean scales of positive answers of contributing factors appeared to be higher in I type, S type, T type, P type than in E type, N type, F type, J type. 2. ISTP and ISFP among 16 types of personality seemed to have higher prevalence of symptoms and contributing factors of temporomandibular disorders than other types of personality. 3. Symptom of TMJ pain during mouth opening seemed to occur more frequently in I type, S type, F type, J type than in E type, N type, T type, P type. 4. Contributing factors including clenching and stressful state occurred significantly more frequently in I type than E type. Gum chewing habit occurred significantly more frequently in E type than in I type. 5. Unilateral chewing habit occurred significantly more frequently in J type than in P type. 6. Nervous or sensitive persons had significantly higher mean scales of positive answers of subjective symptoms than relaxed or general persons. 7. General persons had significantly lower mean scales of positive answers of contributing factors than nervous, sensitive and relaxed persons. In conclusion, these results show that there is the relationship between personality and temporomandibular disorders and patient education and counselling considering personality type may contribute to treating patients with temporomandibular disorders.