• 제목/요약/키워드: $CdCl_2$

검색결과 456건 처리시간 0.027초

카드뮴화합물별(化合物別) 수도(水稻) 흡수(吸收) 및 생육(生育)에 미치는 영향(影響) (Effect of Various Cadmium Compounds on the Growth and Cadmium Uptake of Paddy Rice)

  • 김규식;김복영;박영선
    • 한국환경농학회지
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    • 제2권1호
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    • pp.6-12
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    • 1983
  • 수도(水稻)에 대(對)한 cadmium화합물(化合物)의 형태(形態)에 따른 피해농도(被害濃度) 및 cadmium흡수정도(吸收程度)를 구명(究明)하기 위(爲)하여 $Cd(NO_3)_2$, $CdCl_2$, $CdSo_4$, $CdCo_3$ 및 CdS 등(等)의 화합물(化合物)을 토양(土壤)에 Cd로서 0, 5, 10, 25, 50 ppm처리(處理)하여 수도(水稻)의 수양(收量)에 미치는 농도(濃度)와 수도체중(水稻體中)의 cadmium함량(含量)을 조사(調査)한 바 그 결과(結果)는 다음과 같다. 1) 토양중(土壤中) cadmium처리농도(處理濃度)가 높을수록 식물체(植物體) 경엽(莖葉) 및 현미중(玄米中) cadmium함량(含量)은 증가(增加)하였으나 수량(收量)은 높은 농도(濃度)에서 감소(減小)되었다. 2) 수양감수(收量減收)를 가져오는 토양중(土壤中) Cd의 농도(濃度)는 $Cd(NO_3)_2$ : 12.9ppm, $CdSO_4$ : 21.5ppm, $CdCl_2$ : 25.8ppm $CdCO_3$ : 33.2ppm, CdS : 97.6ppm 이었다. 3) 현미중(玄米中) cadmium함량(含量)이 1.0ppm이 되는 토양중(土壤中) Cd의 농도(濃度)는 $cd(NO_3)_2$ : 13.8ppm, $CdCl_2$ : 14.4ppm, $CdSO_4$ : 16.9ppm, $CdCO_3$ : 19.2ppm이었다. 4) cadmium의 현미흡수양/지상부흡수량비(玄米吸收量/地上部吸收量比)는 최고(最高) 분얼기(分蘖期) 28%, 유수형성기(幼穗形成期) 20%, 수확기(收穫期) 15%이었다. 5) 유수형성기(幼穗形成期) 식물체(植物體) 경엽중(莖葉中) cadmium함량(含量)과 현미중(玄米中) cadmium함량(含量)과의 관계(關係)는 $Y=0.067-0.0028x+0.007x^2$으로 고도(高度)의 유의성(有意性)이 있었다. 6) 용해도(溶解度)가 낮은 cadmium화합물(化合物)이 시험후(試驗後) 토양중(土壤中) 가용성(可溶性) cadmium합량(合量)이 낮았다.

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L6 근육세포에서 포도당 수송능에 미치는 $CdCl_2$의 영향 (Effects of Cadmium on Glucose Transport in L6 Myocytes)

  • 강동희;길이룡;박광식;이병훈;문창규
    • Environmental Analysis Health and Toxicology
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    • 제20권1호
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    • pp.75-85
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    • 2005
  • This study was aimed to know the effect of cadmium chloride (CdCl₂) on glucose transport in L6 myotube and its action mechanism. CdCl₂ increased the 2-deoxy- (l-3H)-D-glucose (2-DOG) uptake 1.9 and 2.4 fold at 10 and 25 μM respectively. To investigate the stimulating-mechanism of glucose transport induced by CdCl₂, the wortmannin and PD98059 were used as PI3K (phosphatidylinositol 3-kinase) inhibitor and MAPK inhibitor respectively, which did not affect 2-DOG uptake. This fact suggests that CdCl₂ induced 2-DOG uptake may not be concerned to the insulin signalling pathway. Whereas nifedipine, a calcium channel blocker, and trifluoperazine, a calmodulin inhibitor, were found to inhibit the 2-DOG uptake stimulted by CdCl₂. In addition, we also measured the ROS (reactive oxygen species) production and GSH level in L6 myotube to investigate the correlation between the glucose uptake and ROS. CdCl₂(25 μM) increased ROS generation approximately 1.5 fold and changed the cellular GSH level, but GSSG/GSH ratio remained unchanged. CdCl₂ stimulated 2-DOG uptake and ROS generation were inhibited by N-acetylcystein. And BSO pretreatment, a potent inhibitor of γ-GCS, resulted in the dramatic decrease of 2-DOG uptake and also the increase of the sensitivity to cadmium cytotoxicity. The obtained results suggest that CdCl₂-stimulated glucose uptake might be based on the activation of HMP shunt as an antioxidant defense mechanism of the cells.

CBD 방법에 의한 CdS 박막 제조에서 $NH_4Cl$과 TEA의 영향 ($NH_4Cl$ and TEA effect for CdS thin film prepared by CBD process)

  • 조두희;이상수;송기봉
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2006년도 추계학술대회 논문집 Vol.19
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    • pp.253-254
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    • 2006
  • We have manufactured CdS and Cd(Cu)S thin films by chemical bath deposition(CBD) process, and examined the effects of $NH_4Cl$ and TEA. The addition of $NH_4Cl$ remarkably enhanced the film thickness of CdS, however, TEA slightly decreased the film thickness. The thickness of CdS film prepared from the aqueous solution of 0.003 M $CdSO_4$ 0.00008 M $CuSO_4$, 1.3M NH3, 0.03 M $SC(NH_2)_2$ and 0.0009 M $NH_4Cl$ was 210 nm and resistivity of that was $1.2{\times}10^3{\Omega}cm$.

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$CdCl_2$를 첨가한 $Cd_{1-x}Zn_xS$소결막의 미세구조 변화 (Microstructural Change of $Cd_{1-x}Zn_xS$ Films Sintered with $CdCl_2$)

  • 설여송;임호빈
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1988년도 춘계학술대회 논문집
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    • pp.35-37
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    • 1988
  • Polycrystalline $Cd_{1-x}Zn_xS$ films were prepared by coaling a slurry which consisted of CdS, ZnS, $CdCl_2$ and propylene glycol on gloss substrates and by sintering in a nitrogen atmosphere. Microstructures, optical transmittance and electrical resistance of the sintered films have been investigatd. Grain shape of $Cd_{1-x}Zn_xS$ films sintered in a sealed boat was nearly spherical but the shape became, irregular when sintered in evaporating condition due to occurrence of CIGM (Chemically Induced Grain-boundary Migration). Controlling the rate of evaporation of $CdCl_2$, sintered $Cd_{1-x}Zn_xS$ films with high optical transmittance and low electrical resistance could be obtained.

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Photo-electronic Properties of Cd(Cu)S/CdS Thin Films and Diodes Prepared by CBD

  • Cho, Doo-Hee;Kim, Kyong-Am;Song, Gi-Bong
    • 한국세라믹학회지
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    • 제45권1호
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    • pp.30-35
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    • 2008
  • In this paper, CdS/Cd(Cu)S thin films and diodes were manufactured via a chemical bath deposition (CBD) process, and the effects of $NH_4Cl$ and TEA(triethylamine) on the properties of the films were examined. The addition of $NH_4Cl$ significantly increased the thickness of the CdS and Cd(Cu)S films, however, the addition of TEA decreased the thickness in both cases slightly. The addition of $NH_4Cl$ along with TEA increased the film thickness more effectively compared to the addition of only $NH_4Cl$. The thickness of the CdS film prepared from an aqueous solution of 0.007 M $CdSO_4$, 1.3 M $NH_4OH$, 0.03 M $SC(NH_2)_2$, 0.0001 M TEA and 0.03 M $NH_4Cl$ was 310 nm. Dark resistivity of the CdS film was $1.2{\times}10^3\;{\Omega}cm$ and the photo resistivity with $500\;W/cm^2$ irradiation of white light was $20{\Omega}cm$. The Cd(Cu)S/CdS thin film diodes prepared by CBD showed good rectifying characteristics.

Interaction between UN and CdCl2 in molten LiCl-KCl eutectic. II. Experiment at 1023 K

  • Zhitkov, Alexander;Potapov, Alexei;Karimov, Kirill;Kholkina, Anna;Shishkin, Vladimir;Dedyukhin, Alexander;Zaykov, Yury
    • Nuclear Engineering and Technology
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    • 제54권2호
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    • pp.653-660
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    • 2022
  • The interaction between UN and CdCl2 in the LiCl-KCl molten eutectic was studied at 1023 K. The chlorination was monitored by sampling and recording the redox potential of the medium. At 1023 K the chlorination of UN with cadmium chloride in the molten LiCl-KCl eutectic proceeds completely and results in the formation of uranium chlorides. The melts of the LiCl-KCl-UCl3 or LiCl-KCl-UCl4 compositions can be obtained by the end of experiment depending on the presence of metallic cadmium in the reaction zone. The higher the concentration of the chlorinating agent, the faster the reaction rate. At [CdCl2]/[UN] = 1.65 (10% excess) the reaction proceeds to completion in about 7.5 h. At [CdCl2]/[UN] = 7 the complete chlorination takes 2.5-3 h.

$CdCl_2$ 활성화 공정과 후면 산화막 제거 공정을 거친 CdTe 박막의 표면 물성 변화 연구

  • 천승주;이승훈;정영훈;배종성;김지현;김동환
    • 한국재료학회:학술대회논문집
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    • 한국재료학회 2012년도 춘계학술발표대회
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    • pp.98.1-98.1
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    • 2012
  • CdS/CdTe 박막 태양전지의 경우 높은 광흡수 계수를 가지고 있는 CdTe 다결정 박막을 흡수층으로이용 한다. CdTe 다결정 박막의 경우 CdS/CdTe 계면과 박막 내부에 많은 결함들이 존재 하며, CdTe 박막 내부에 존재하는 캐리어의 수를 증가 시키기 위하여 $CdCl_2$ 활성화 공정을 거치게 된다. 이때 박막의 물성 변화를 분석 하기 위하여, X-Ray Diffractometer (XRD), X-ray Photoelectron Spectroscopy (XPS)를 이용하여 박막 표면 분석을 진행 하였다. 이를 통해 박막 표면에서 산소가 Cd와 Te과 결합하면서 산화막이 생성되는 것을 확인하였다. 박막 표면에 생성된 산화막은 후면 금속 전극 형성을 위해, 용액 공정을 통하여 제거 되는데, 이때 CdTe 박막 표면에서 Cd이 용액에 의해 제거 되는 것을 확인 하였다.

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$CdCl_2$ 처리에 의한 $CdS{\backslash}CdTe$ 태양전지의 특성에 관한 연구 (The effect of $CdCl_2$ treatment on the Characteristics of $CdS{\backslash}CdTe$ solar cell)

  • 남준현;김정호;이재형;박용관;신성호;김신;박정일;박광자
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1996년도 하계학술대회 논문집 C
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    • pp.1418-1420
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    • 1996
  • In this paper, structural properties of CdTe thin films and photovoltaic properties of thin film CdS/CdTe solar ceIl prepared by thermal vacuum evaporation were studied. Structural variation with $CdCl_2/heat$ treatment are assessed using x-ray diffraction and scanning electron microscopy. The crystal structure of CdTe films was zincblend type with preferential orientation of the (111) plane parallel to the substrate. The $CdCl_2$ treatment appears to increase the grain size of polycrystalline CdTe thin film. It was found that CdS/CdTe solar cell characteristics were improved by the heat treatment with $CdCl_2$. The conversion efficiency, however, decreased when heat treatment temperature was too high.

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CdTe 태양전지 제조 공정에 따라 변화하는 CdS와 CdTe 박막의 물성 변화 분석 (The Analysis of CdS and CdTe Thin Film at the Processes of Manufacturing CdTe Solar Cells)

  • 천승주;정영훈;최수영;탁성주;김지현;김동환
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2011년도 춘계학술대회 초록집
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    • pp.106.2-106.2
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    • 2011
  • 다층 박막 구조로 이루어진 CdS/CdTe 태양전지의 경우, 각각의 박막이 다양한 제조 공정을 거치면서 물성특성의 변화를 겪게 된다. 각각의 박막이 고온의 열처리 공정과, $CdCl_2$ 용액 처리 및 후면 산화막 제거 공정 등을 거치게 되면서 겪게 되는 물성 변화 분석을 살펴보고자 한다. 각각의 박막 제조 방식은 일반적으로 사용되는 방식으로, CdS의 경우는 용액성장법(Chemical Bath Deposition, CBD), CdTe의 경우는 근접승화법(Closed Space Sublimaition, CSS)을 사용했으며, X-Ray Diffractometer (XRD), Raman spectroscopy, Field Emission Scanning Electron Microscope (FE-SEM), Energy Dispersive Spectroscopy (EDS), X-ray Photoelectron Spectroscopy (XPS) 등을 이용하여 분석하였다. 각각의 셀 제조 공정을 거치면서 CdS, CdTe 박막들은 결정, 광 특성, 성분 변화를 보였다.

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