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전기제품 PL상담센터 발표

  • Korea Electrical Products Safety Association
    • Product Safety
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    • no.12 s.156
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    • pp.53-53
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    • 2006
  • 지난 11월중 이루어진 PL상담건수는 모두 26건이었으며, PL상담록과 제품별 회의내용 중에서 특히 중요하다고 여겨지는 사안을 발췌하여 여기에 게재하오니 전기용품제조업체 및 수입업체는 물론 소비자 여러분의 많은 참고가 있기를 기대합니다.

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전기제품 PL상담센터 발표

  • Korea Electrical Products Safety Association
    • Product Safety
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    • no.9 s.153
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    • pp.53-53
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    • 2006
  • 지난 7월중 이루어진 PL상담건수는 모두 21건이었으며, PL상담록과 제품별 회의내용 중에서 특히 중요하다고 여겨지는 사안을 발췌하여 여기에 게재하오니 전기용품제조업체 및 수입업체는 물론 소비자 여러분의 많은 참고가 있기를 기대합니다.

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전기제품 PL상담센터 발표

  • Korea Electrical Products Safety Association
    • Product Safety
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    • no.11 s.155
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    • pp.49-49
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    • 2006
  • 지난 10월중 이루어진 PL상담건수는 모두 24건이었으며, PL상담록과 제품별 회의내용 중에서 특히 중요하다고 여겨지는 사안을 발췌하여 여기에 게재하오니 전기용품제조업체 및 수입업체는 물론 소비자 여러분의 많은 참고가 있기를 기대합니다.

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전기제품 PL상담센터 발표

  • Korea Electrical Products Safety Association
    • Product Safety
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    • no.6 s.150
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    • pp.55-55
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    • 2006
  • 지난 5월중 이루어진 PL상담건수는 모두 26건이었으며, PL상담록과 제품별 회의내용 중에서 특히 중요하다고 여겨지는 사안을 발췌하여 여기에 게재하오니 전기용품제조업체 및 수입업체는 물론 소비자 여러분의 많은 참고가 있기를 기대합니다.

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전기제품 PL상담센터 발표

  • Korea Electrical Products Safety Association
    • Product Safety
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    • no.1 s.157
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    • pp.55-55
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    • 2007
  • 지난 12월중 이루어진 PL상담건수는 모두 22건이었으며, PL상담록과 제품별 회의내용 중에서 특히 중요하다고 여겨지는 사안을 발췌하여 여기에 게재하오니 전기용품제조업체 및 수입업체는 물론 소비자 여러분의 많은 참고가 있기를 기대합니다.

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전기제품 PL상담센터 발표

  • Korea Electrical Products Safety Association
    • Product Safety
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    • no.7 s.151
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    • pp.53-53
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    • 2006
  • 지난 6월중 이루어진 PL상담건수는 모두 28건이었으며, PL상담록과 제품별 회의내용 중에서 특히 중요하다고 여겨지는 사안을 발췌하여 여기에 게재하오니 전기용품제조업체 및 수입업체는 물론 소비자 여러분의 많은 참고가 있기를 기대합니다.

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전기제품 PL상담센터 발표

  • Korea Electrical Products Safety Association
    • Product Safety
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    • no.8 s.152
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    • pp.53-53
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    • 2006
  • 지난 7월중 이루어진 PL상담건수는 모두 21건이었으며, PL상담록과 제품별 회의내용 중에서 특히 중요하다고 여겨지는 사안을 발췌하여 여기에 게재하오니 전기용품제조업체 및 수입업체는 물론 소비자 여러분의 많은 참고가 있기를 기대합니다.

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전기제품 PL상담센터 발표

  • Korea Electrical Products Safety Association
    • Product Safety
    • /
    • no.10 s.154
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    • pp.55-55
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    • 2006
  • 지난 9월중 이루어진 PL상담건수는 모두 26건이었으며, PL상담록과 제품별 회의내용 중에서 특히 중요하다고 여겨지는 사안을 발췌하여 여기에 게재하오니 전기용품제조업체 및 수입업체는 물론 소비자 여러분의 많은 참고가 있기를 기대합니다.

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Photoluminescence Characterization of Halide Perovskite Films according to Measuring Conditions (페로브스카이트 할로겐화물 박막의 발광 측정 조건에 따른 특성 분석)

  • Cho, Hyeonah;Lee, Seungmin;Noh, Jun Hong
    • Korean Journal of Materials Research
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    • v.32 no.10
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    • pp.419-424
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    • 2022
  • Halide perovskite solar cells (PSCs) have improved rapidly over the past few years, and research on the optoelectrical properties of halide perovskite thin films has grown as well. Among the characterization techniques, photoluminescence (PL), a method of collecting emitted photons to evaluate the properties of materials, is widely applied to evaluate improvements in the performance of PSCs. However, since only photons emitted from the film in the escape cone are included, the photons collected in PL are a small fraction of the total photons emitted from the film. Unlike PSCs power conversion efficiency, PL measuring methods have not been standardized, and have been evaluated in a variety of ways. Thus, an in-depth study is needed of the methods used to evaluate materials using PL spectra. In this study, we examined the PL spectra of the perovskite light harvesting layer with different measurement protocols and analyzed the features. As the incident angle changed, different spectra were observed, indicating that the PL emission spectrum can depend on the measuring method, not the material. We found the intensity and energy of the PL spectra changes were due to the path of the emitted photons. Also, we found that the PL of halide perovskite thin films generally contains limited information. To solve this problem, the emitted photons should be collected using an integrating sphere. The results of this study suggest that the emission spectrum of halide perovskite films should be carefully interpreted in accordance with PL measuring method, since PL data is mostly affected by the method.

Increased Expression of FosB through Reactive Oxygen Species Accumulation Functions as Pro-Apoptotic Protein in Piperlongumine Treated MCF7 Breast Cancer Cells

  • Park, Jin-Ah;Na, Han-Heom;Jin, Hyeon-Ok;Kim, Keun-Cheol
    • Molecules and Cells
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    • v.42 no.12
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    • pp.884-892
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    • 2019
  • Piperlongumine (PL), a natural alkaloid compound isolated from long pepper (Piper longum), can selectively kill cancer cells, but not normal cells, by accumulation of reactive oxygen species (ROS). The objective of this study was to investigate functional roles of expression of SETDB1 and FosB during PL treatment in MCF7 breast cancer cells. PL downregulates SETDB1 expression, and decreased SETDB1 expression enhanced caspase 9 dependent-PARP cleavage during PL-induced cell death. PL treatment generated ROS. ROS inhibitor NAC (N-acetyl cysteine) recovered SETDB1 expression decreased by PL. Decreased SETDB1 expression induced transcriptional activity of FosB during PL treatment. PARP cleavage and positive annexin V level were increased during PL treatment with FosB overexpression whereas PARP cleavage and positive annexin V level were decreased during PL treatment with siFosB transfection, implying that FosB might be a pro-apoptotic protein for induction of cell death in PL-treated MCF7 breast cancer cells. PL induced cell death in A549 lung cancer cells, but molecular changes involved in the induction of these cell deaths might be different. These results suggest that SETDB1 mediated FosB expression may induce cell death in PL-treated MCF7 breast cancer cells.