• 제목/요약/키워드: Se effect

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A Study on the Exceptional Cases to the Anti-Superiority Effect in Korean and Japanese: A Morpho-Syntactic Approach

  • Khym, Han-Gyoo
    • International Journal of Advanced Culture Technology
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    • 제5권1호
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    • pp.9-16
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    • 2017
  • In an English multiple Wh-construction with two wh-words, only a higher-located wh-word in a sentence structure is allowed to pre-pose to the Spec of CP, which has been known as a Superiority Effect(SE). Contrary to English, Korean and Japanese have been known not to respect SE, and this phenomenon has been called an Anti-Superiority Effect(ASE). Recent studies including Takita et al(2007) and Harada(2015) among others, however, have suggested exceptional cases to ASE in Japanese, and attempted to explain them through a feature checking mechanism within the Minimalist Program(MP) by Chomsky(1995, 1998). Such explanations of MP, which are based on the abstract feature checking system, have recently been considered just as a kind of technicalia and should be backed up with further empirical evidence. In this paper, I show that there are also exceptions to ASE in Korean, and the exceptional cases to ASE both in Korean and Japanese can be well explainable based on the empirical evidence of Korean/Japanese morpho-syntax.

The mediating effects of post-pandemic health promotion behaviors in the relationship between anxiety and quality of life in young adults in South Korea: a cross-sectional study

  • Hyang-Suk Choi;Myoung-Lyun Heo
    • Journal of Korean Biological Nursing Science
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    • 제26권2호
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    • pp.144-153
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    • 2024
  • Purpose: This study aimed to investigate the mediating effects of health promotion behavior (HPB) in the relationship between anxiety and quality of life (QoL) in young adults living in the post-pandemic era. Methods: A cross-sectional descriptive online survey design was utilized. Data on anxiety, QoL, HPB, and demographic characteristics were collected from 213 adults aged 19-35 years in Korea via an online survey in January 2024. The collected data were analyzed using SPSS 27.0 and PROCESS MACRO 4.2 software. Results: Strong correlations were observed among anxiety, QoL, and post-pandemic HPB (PP-HPB) in young adults, and anxiety and PP-HPB were identified as significant predictors of QoL. The total effect of anxiety on QoL was significant (B = -1.40, bootstrapped SE = 0.10), with both the direct effect (B = -0.70, bootstrapped SE = 0.09) and the indirect effect (B = -0.70, bootstrapped SE = 0.11) being significant. This suggests that PP-HPB partially mediated the relationship between anxiety and QoL. Conclusion: This study highlights the importance of strengthening HPB with consideration of life changes since the coronavirus disease 2019 pandemic to improve QoL among young adults with anxiety.

태양전지용 $CuInSe_2$단결정 박막 성장과 광학적 특성 (Growth and optical characterization of $CuInSe_2$ single crystal thin film for solar cell application)

  • 백승남;홍광준
    • 한국결정성장학회지
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    • 제12권4호
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    • pp.202-209
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    • 2002
  • $CuInSe_2$ 단결정 박막은 수평 전기로에서 합성한 다결정을 증발원으로 하여, hot wall epitaxy(HWE) 방법으로 증발원과 기판(반절연-GaAs(100))의 온도를 각각 $620^{\circ}C$, $410^{\circ}C$로 고정하여 단결정 박막을 성장하였다. 단결정 박막의 결정성은 광발광과 이중결정 X-선 요동곡선(DCRC)으로 연구하였다. $CuInSe_2$ 단결정 박막의 운반자 농도와 이동도는 van der Pauw 방법으로 측정되었다. 또한 $CuInSe_2$ 단결정 박막의 C축에 수직하게 빛을 쬐었을 때 측정되여진 단파장대의 광전류 봉우리 갈라짐으로부터 결정장 갈라짐 $\Delta$Cr과 스핀 궤도 갈라짐 $\Delta$So(spin orbit splitting) 값을 구하였다. 광발광 측정으로부터 고품질의 결정에서 볼 수 있는 free exciton($E_x$)와 매우 강한 세기의 중성 받게 bound exciton($A^{\circ}$, X) 피크가 관찰되었다. 이때 중성 받게 bound exciton의 반치폭과 결합 에너지는 각각 7meV와 5.9meV였다. 또한 Haynes nile에 의해 구한 불순물의 활성화 에너지는 59meV였다.

Kainate 유발 간질중첩증 모델에서 topiramate가 해마 신경세포사와 glutamate 수용체 발현에 미치는 영향 (The Effect of Topiramate on Hippocampal Neuronal Death and Expression of Glutamate Receptor in Kainate-induced Status Epilepticus Model)

  • 박민정;하세운;배혜란;김상호
    • 생명과학회지
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    • 제15권3호
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    • pp.505-512
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    • 2005
  • 신경흥분독성과 간질발작발현은 glutamate 수용체활성과 연관이 있다고 알려져 있다. a-amino-3-hydroxy-5-methyl-4-isoxazole-propionate (AMPA), kainate 수용체에 대한 glutamate 활성을 포함하는 다양한 기전을 가진 항전간제인 Topiramate는 신경보호작용을 가진다는 증거가 제시되어 Topiramate가 간질발작 후 해마의 glutamate 수용체 발현에 미치는 효과를 관찰하였다. 흰쥐에 kainate를 복강 내 주사하여 간질중첩증을 유발시킨 후 Topiramate를 1주일 주사하였다 Apop tag in situ detection kit를 이용하여 세포손상을 관찰한 결과 kainate 유발 간질중첩증 1주일 후 해마의 CA1, CA3에서 심각한 세포사를 보였으나, Topiramte 처리 군에서는 세포사가 현저히 감소하였다. 간질중첩증 이후 NMDA 수용체 아형 1,2a, 2b 발현이 현저히 증가했으나 Topiramate 처치에 의해 NMDA수용체의 발현에는 뚜렷한 변화가 없었다. AMPA수용체에서는 GluR1이 간질중첩증 이후 현저히 상향 조정되었고 GluR2는 현저히 하향조정 되었다 Topiramate 1주일 처리 시 간질중첩증으로 인해 변화된 CluR1과 GluR2의 발현이 역전되었다. 결론적으로 Topiramate는 간질중침증에 의한 CluR1/CluR2 발현비의 증가로 유발되는 흥분성 신경세포사를 억제시킴으로써 신경보호작용이 있는 것으로 보인다.

Effect of Se Flux and Se Treatment on the Photovoltaic Performance of β-CIGS Solar Cells

  • Kim, Ji Hye;Cha, Eun Seok;Park, Byong Guk;Ahn, Byung Tae
    • Current Photovoltaic Research
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    • 제3권2호
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    • pp.39-44
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    • 2015
  • $Cu(In,Ga)_3Se_5$ (${\beta}-CIGS$) has a band gap of 1.35 eV which is an optimum value for high solar-energy conversion efficiency. However, ${\beta}-CIGS$ film was not well characterized yet due to lower efficiency compared to $Cu(In,Ga)Se_2$ (${\alpha}-CIGS$). In this work, ${\beta}-CIGS$ films were fabricated by a three-stage co-evaporation of elemental sources with various Se fluxes. As the Se flux increased, the crystallinity of ${\beta}-CIGS$ phase was improved from the analysis of Raman spectroscopy and a deep-level defect was reduced from the analysis of photoluminescence spectroscopy. A Se treatment of the ${\beta}-CIGS$ film at $200^{\circ}C$ increased Ga content and decreased Cu content at the surface of the film. With the Se treatment at $200^{\circ}C$, the cell efficiency was greatly improved for the CIGS films prepared with low Se flux due to the increase of short-circuit current and fill factor. It was found that the main reason of performance improvement was lower Cu content at the surface instead of higher Ga content.

$CdS_{1-x}Se_{x}$ 광도전 박막의 전기-광학적 특성연구 (Study on the Electro-Optic Characteristics of $CdS_{1-x}Se_{x}$ Photoconductive Thin Films)

  • 양동익;신영진;임수영;박성문;최용대
    • 센서학회지
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    • 제1권1호
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    • pp.53-57
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    • 1992
  • 본 연구는 $CdS_{1-x}Se_{x}$의 박막을 제작하고 그 전기-광학적인 특성을 조사한 것이다. 전자선 가열증착법을 이용하여 $CdS_{1-x}Se_{x}$을 알루미나 기판위에 $1.5{\times}10^{-7}$ torr의 압력, 4kV의 전압, 2.5 mA의 전류 그리고 기판온도를 $300^{\circ}C$로 유지하여 증착하였다. 증착된 $CdS_{1-x}Se_{x}$ 박막은 X-ray 회절 실험을 통하여 볼 때, 육방정계의 결정구조를 가지며 성장되었다. $CdS_{1-x}Se_{x}$ 도전막은 특정분위기에서 $550^{\circ}C$, 30분간 열처리함으로써 높은 광전도성을 나타내게 되었다. 또한 Hall 효과, 광전류 스펙트럼, 감도, 최대 허용 전력과 응답시간 등을 조사하였다.

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Supplementation with Selenium and Vitamin E Improves Milk Fat Depression and Fatty Acid Composition in Dairy Cows Fed Fat Diet

  • Liu, Zhao L.;Yang, De P.;Chen, Pu;Dong, Wei X.;Wang, Dong M.
    • Asian-Australasian Journal of Animal Sciences
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    • 제21권6호
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    • pp.838-844
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    • 2008
  • This experiment was conducted to evaluate the effect of supplementing a fat diet with selenium (Se) and vitamin E on performance of cows, blood antioxidant status and milk fatty acid composition. Sixty-three lactating Holstein cows were randomly divided into seven groups of nine cows each and each group was fed one of the following diets: i) a basal diet (control); ii) a basal diet with 0.15 mg Se/kg DM (LSe); iii) a basal diet with 0.3 mg Se/kg DM (HSe); iv) a basal diet with 5,000 IU/cow d vitamin E (LVE); v) a basal diet with 10,000 IU/cow d vitamin E (HVE); vi) a basal diet with 0.15 mg Se/kg DM and 5,000 IU/cow d vitamin E (LSeVE); vii) a basal diet with 0.3 mg Se/kg DM and 10,000 IU/cow d vitamin E (HSeVE). Milk fat percentage and conjugated linoleic acid (CLA) yield in HVE and HSeVE diets increased (p<0.05) compared with the control diet. In milk fat, dietary supplementation of Se tended to increase the proportion of the sum of unsaturated fatty acids (UFA) and significantly decreased (p<0.05) the proportion of the sum of saturated fatty acids (SFA). In addition, compared with the control, thiobarbituric acid reactive substances (TBARS) content was lower and glutathione peroxidase (GSH-Px) was higher when fat diets were supplemented with Se. Our data showed that supplementation with Se and/or VE improved these nutrients in blood and milk. The results indicated that fat diets supplemented with Se improved both antioxidant status in blood and fatty acids in milk fat, and fat diets supplemented with vitamin E alleviated milk fat depression. Therefore, the combination of Se and vitamin E caused synergistic effects on the nutritional quality of milk fat and performance of cows fed a fat diet.

Selenization 압력이 $CuInSe_2$ 박막의 특성에 미치는 영향 (Effect of Selenization Pressure on the properties of $CuInSe_2$ Thin Films)

  • 김상덕;김형준;송진수;윤경훈
    • 한국세라믹학회지
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    • 제35권8호
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    • pp.871-877
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    • 1998
  • Cu-In 금속증을 증착한 뒤, 이를 selenization하는 이단계 방법에 의하여 $CuInSe_2$ 박막을 형성하였다. CuIn 금속층은 co-sputtering 방법을 이용하여 상온에서 증착하였다. $Cu_{11}In_{9}$ 상과 $CuIn_2$ 상이 공존하였고, Cu의 양이 증가할 수록 $Cu_{11}In_{9}$ 상이 많이 존재하였다. Selenization은 진공과 상압의 두가지 조건에서 증착하였다. 상압하에서 증착할 때보다 진공중에서 증착할 때, 더 소수의 화합물만을 형성하고 낮은 온도에서 $CuInSe_2$ 단일상을 형성하였다. 이로인해 진공중에서 증착하였을 때 표면 거칠기가 적고 입자가 크며 결정성이 좋은 $CuInSe_2$ 박막을 얻을 수 있었다.

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비정질 As-Ge-Se-S 박막에서의 Ag 도핑에 따른 회절효율 특성 연구 (The characteristic of diffraction efficiency depending on Ag doping on film of amorphous AsGeSeS)

  • 이기남;여철호;신경;정홍배
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2004년도 하계학술대회 논문집 Vol.5 No.2
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    • pp.1066-1069
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    • 2004
  • This paper shows the characteristic of diffraction efficiency on film of amorphous AsGeSeS according to Ag doping. We compare amorhous AsGeSeS with the characteristics of AsGeSeS/Ag (10nm) and AsGeSeS/Ag (20m). We made film such as $\lambda$, $\lambda/2$, $\lambda/4$, $\lambda/8on$ the basis of 633nm, which is wavelength of recording laser(He-Ne). The highest diffraction efficiency on AsGeSeS film is $\lambda/4$, followed by $\lambda/2$, $\lambda$, $\lambda/8$. In the case of Ag 10nm, it is followed by $\lambda/4$, $\lambda/2$, $\lambda$, $\lambda/8$. On the occasion of Ag 20nm, it seems that the highest is $\lambda/2$, followed by $\lambda$, $\lambda/4$, $\lambda/8$. In other words, it appears that the highest point on AsGeSeS(158nm) single layer is 0.09%, the one of AsGeSeS(158nm)/Ag(10nm) is 1.6%, and the point of AsGeSeS(316nm)/Ag(20nm) is3.2%. Comparing the highest point in each case, we conclude that there is a distinctive increase in diffraction efficiency according the effect on Ag doping.

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전자빔 증착법에 의한 CdSe/GaAs epilayer의 성장과 그 전기-광학적 특성 (Growth and electro-optical characteristics of CdSe/GaAs epilayers prepared by electron beam epitaxy)

  • 양동익;신영진;이춘호;최용대;유평렬
    • 한국결정성장학회지
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    • 제7권1호
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    • pp.70-75
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    • 1997
  • Electron beam 증착법을 보완하여 GaAs(100)기판위에 cubic(zinc blende) CdSe 에피충을 성장시켜 그의 특성을 조사하였다 .. CdSe 에피충의 격자 상수는 6.077 A였으며, 배향 성은 ECP 패번에 의하여 확인되고 결정성은 DCXR curve로 관찰하였다. 상온에서 측정된 H Hall data로는 에피충의 운반자 농도와 이통도는 각각 1018cm-3, 102cm2N' see 정도임을 알았 고 30 K에서 측정한 PC spectra peak는 cubic CdSe의 free exciton에 기인된 것으로 1.746 e eV에서 예리하게 나타냐고 있음을 보여주고 있다.

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