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- 저자 : Peng DU (검색결과 154 건)
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Development of Hospice Care Service for the Elderly in China
Du Peng,Wang Yongmei 서울대학교 사회발전연구소 2016 Journal of Asian Sociology Vol.45 No.2
Against the backdrop of the aging society, we need to make great efforts to develop the hospice care service for the elderly if we want to comprehensively improve “the Quality of Death” and enable more old people to enjoy benefits of dying peacefully. This essay firstly reviews the policies and practices of the development of hospice care for the elderly in China, and we discover that main obstacles that hinder its development are institutional barriers, difficulties in financing, a lack of personnel, and low acceptance rate of the general public. Considering the current construction of socialized pension service system in China, we make institutional exploration in the development of the hospice care of the elderly in China. And we hold that these are key ways to develop this career to “get through” the lifeblood of the medical and health services and the hospice care service, “extend” the socialized system of elderly care service to this service, enhance the “input” in this service, and fully develop the long-acting “safeguard” mechanism for the development of this service.
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Gene Mapping Related to Yellow Green Leaf in a Mutant Line in Rice (Oryza sativa L.)
Peng Du,Ying Hua Ling,Xian Chun Sang,Fang Ming Zhao,Rong Xie,Zheng Lin Yang,Guang Hua He 한국유전학회 2009 Genes & Genomics Vol.31 No.2
A mutant, which derived from the restorer line Jinhui10 treated with EMS, showed completely yellow green leaves, and it had low chlorophyll content and poor agronomic characteristics during the growing stage. The F1 plants from the cross between normal × the mutant showed normal green leaves, and the segregation ratio of normal to yellow green leaves was 3:1 in F2 population. It indicated that the trait was controlled by a single recessive nuclear gene, temporarily designated as ygl3. The gene ygl3 was mapped between RM468 and RM3684 with genetic distances 8.4 cM and 1.8 cM on chromosome 3. This result would be used as genetic information for fine mapping and map-based cloning of ygl3 gene.
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Welfare Demands of the Korean Elderly
Peng Du,Keun Hong Lee,In Jong Kim 한국노인복지학회 2011 International Journal of Welfare for the Aged Vol.24 No.-
In this study, we surveyed community welfare service center in 2005~2006 in Seoul In particular, a series of questionnaire were performed about middle or law income families` apparent welfare needs in Korea Fran the survey, we found that No-won-Ku district has a greater portion of disabled, elderly, and so-culled boy & girl headed families. For example, there are 792 elderly and 1,067 disabled at Joong-Kye 3 dong indicating even in Seoul, some districts are concentrating points for low income a- risk group families Overall in this study, it is optimistic that activation plan the community hall or similar welfare service facilities will make the local leaders more hopeful as well as ordinary user members, and government officials and social workers view the elderly respect hall as future major welfare service place.
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Du, Ze-Peng,Wu, Bing-Li,Wang, Shao-Hong,Shen, Jin-Hui,Lin, Xuan-Hao,Zheng, Chun-Peng,Wu, Zhi-Yong,Qiu, Xiao-Yang,Zhan, Xiao-Fen,Xu, Li-Yan,Li, En-Min Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.16
NGAL (neutrophil gelatinase-associated lipocalin) is a novel cancer-related protein involves multiple functions in many cancers and other diseases. We previously overexpressed NGAL to analyze its role in esophageal squamous cell carcinoma (ESCC). In this study, a protein-protein interaction (PPI) was constructed and the shortest paths from NGAL to transcription factors in the network were analyzed. We found 28 shortest paths from NGAL to RELA, most of them obeying the principle of extracellular to cytoplasm, then nucleus. These shortest paths were also prioritized according to their normalized intensity from the microarray by the order of interaction cascades. A systems approach was developed in this study by linking differentially expressed genes with publicly available PPI data, Gene Ontology and subcellular localizaton for the integrated analyses. These shortest paths from NGAL to DEG transcription factors or other transcription factors in the PPI network provide important clues for future experimental identification of new pathways.
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Du, Peng,Huang, Xiaoyong,Yu, Jae Su Elsevier 2018 Dyes and pigments Vol.153 No.-
<P><B>Abstract</B></P> <P>The NaEuF<SUB>4</SUB> nanorods were prepared by an ultra-rapid reaction route at room temperature. Under the excitation of near-ultraviolet (NUV) light, the synthesized nanorods emitted visible red emission, which is ascribed to the characteristic emission of Eu<SUP>3+</SUP> ions, with high color purity of 90.2%. To get deeper insight into the local structure circumstance of Eu<SUP>3+</SUP> ions, a theoretical calculation based on the Judd-Ofelt theory was performed to evaluate the intensity parameters and the larger Ω<SUB>2</SUB> suggested that the Eu<SUP>3+</SUP> ions occupied the low symmetry sites in the NaEuF<SUB>4</SUB> host lattices. The temperature-dependent photoluminescence emission spectra were recorded to examine the thermal stability of the resultant samples and the activation energy was determined to be 0.208 eV. To test the potential practicability of the studied samples in solid-state lighting, a light-emitting diode (LED) device was fabricated. Under a forward bias current of 100 mA, the fabricated LED device emitted dazzling white light with high color rendering index of 90.3, suitable correlated color temperature of 6793 K and good color coordinate of (0.313,0.297). In addition, the cathodoluminescence properties of the NaEuF<SUB>4</SUB> nanorods were systematically studied to explore their applications in field emission displays.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The NaEuF<SUB>4</SUB> nanorods were synthesized by an ultrafast route at room temperature. </LI> <LI> The prepared samples emitted dazzling red emission under NUV light excitation. </LI> <LI> The resultant NaEuF<SUB>4</SUB> nanorods possessed splendid thermal stability. </LI> <LI> The local structure environment properties around the Eu<SUP>3+</SUP> ions were verified by Judd-Ofelt theory. </LI> <LI> The fabricated WLED device possessed admirable optical performance. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Facile synthesis of uniform NaEuF<SUB>4</SUB> red-emitting nanorods at room temperature for white light-emitting diodes and optical displays.</P> <P>[DISPLAY OMISSION]</P>
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Du, Peng,Wang, Lili,Yu, Jae Su Elsevier 2016 JOURNAL OF ALLOYS AND COMPOUNDS Vol.673 No.-
<P><B>Abstract</B></P> <P>The single-component NaY(WO<SUB>4</SUB>)<SUB>2</SUB>:Tm<SUP>3+</SUP>/Dy<SUP>3+</SUP>/Eu<SUP>3+</SUP> color-controllable phosphors were synthesized by a facile high-temperature solid-state reaction technique. The X-ray diffraction patterns, field-emission electron scanning microscope images and photoluminescence (PL) spectra were measured to characterize the prepared phosphors. All the samples possessed pure tetragonal phase and consisted of micro-sized particles. Under ultraviolet light excitation, the characteristic emissions of Tm<SUP>3+</SUP>, Dy<SUP>3+</SUP> and Eu<SUP>3+</SUP> ions were observed. Moreover, the emission color of the NaY(WO<SUB>4</SUB>)<SUB>2</SUB>:0.01Tm<SUP>3+</SUP>/<I>x</I>Dy<SUP>3+</SUP> phosphors was tuned from blue to white by adjusting the Dy<SUP>3+</SUP> ion concentration. The PL spectra revealed that there existed an efficient energy transfer (ET) from Tm<SUP>3+</SUP> to Dy<SUP>3+</SUP> ions and the ET mechanism was determined to be a resonant type <I>via</I> dipole–dipole interaction. Through theoretical calculation, the ET efficiency was found to be as high as 46.1% when <I>x</I> = 0.05 and the critical distance was 6.54 Å. With the introduction of Eu<SUP>3+</SUP> ions, the corrected color temperature of the products was modified and the emission color was also changed from pure white to reddish white. These obtained single-component white light-emitting NaY(WO<SUB>4</SUB>)<SUB>2</SUB>:Tm<SUP>3+</SUP>/Dy<SUP>3+</SUP>/Eu<SUP>3+</SUP> phosphors were expected to be a potential candidate for phosphor-converted white light-emitting diode applications.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Under 358 nm excitation, the obtained samples exhibited the emissions of Tm<SUP>3+</SUP>, Dy<SUP>3+</SUP> and Eu<SUP>3+</SUP> ions. </LI> <LI> Owing to the ET from Tm<SUP>3+</SUP> to Dy<SUP>3+</SUP> ions, the emission color of the phosphors was changed from blue to white. </LI> <LI> The ET efficiency in the NaY(WO<SUB>4</SUB>)<SUB>2</SUB>:0.01Tm<SUP>3+</SUP>/xDy<SUP>3+</SUP> phosphors was up to 46.1% when x = 0.05. </LI> <LI> Through theoretical analysis, the ET mechanism from Tm<SUP>3+</SUP> to Dy<SUP>3+</SUP> ions was the dipole–dipole interaction. </LI> <LI> With the tridoping of Eu<SUP>3+</SUP> ions, the CCT value of the as-prepared phosphors was modified. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Peng Du,Jae Su Yu 한국진공학회(ASCT) 2018 Applied Science and Convergence Technology Vol.27 No.3
We reported a new method to enhance the photoluminescence (PL) properties of Eu<SUP>3+</SUP> ions doped Gd₂Mo₄O15 phosphors via cation substitution. With the aid of conventional sol-gel method, a series of Eu<SUP>3+</SUP> ions doped Gd2(1-x)Y2xMo₄O15 phosphors were prepared. The prepared samples emitted red light when excited at 393 nm. Moreover, when part of the Gd<SUP>3+</SUP> ions was substituted by the Y<SUP>3+</SUP> ions, the PL emission intensity of the studied samples was enhanced and the optimal doping concentration for Y3+ ions was 30 mol%. The calculated CIE coordinate (0.663,0.337) was situated in the red region. Furthermore, the thermal quenching behaviors of the synthesized Eu<SUP>3+</SUP> ions doped Gd2(1-x)Y2xMo₄O15 phosphors were studied. At last, we also packaged a red-emitting light-emitting diode device by integrating the obtained phosphors and a near-ultraviolet chip to verify the applications of the Eu<SUP>3+</SUP> ions doped Gd2(1-x)Y2xMo₄O15 phosphors for indoor lighting.
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Du, Peng,Yu, Jae Su The Korean Vacuum Society 2018 Applied Science and Convergence Technology Vol.27 No.3
We reported a new method to enhance the photoluminescence (PL) properties of $Eu^{3+}$ ions doped $Gd_2Mo_4O_{15}$ phosphors via cation substitution. With the aid of conventional sol-gel method, a series of $Eu^{3+}$ ions doped $Gd_{2(1-x)}Y_{2x}Mo_4O_{15}$ phosphors were prepared. The prepared samples emitted red light when excited at 393 nm. Moreover, when part of the $Gd^{3+}$ ions was substituted by the $Y^{3+}$ ions, the PL emission intensity of the studied samples was enhanced and the optimal doping concentration for $Y^{3+}$ ions was 30 mol%. The calculated CIE coordinate (0.663,0.337) was situated in the red region. Furthermore, the thermal quenching behaviors of the synthesized $Eu^{3+}$ ions doped $Gd_{2(1-x)}Y_{2x}Mo_4O_{15}$ phosphors were studied. At last, we also packaged a red-emitting light-emitting diode device by integrating the obtained phosphors and a near-ultraviolet chip to verify the applications of the $Eu^{3+}$ ions doped $Gd_{2(1-x)}Y_{2x}Mo_4O_{15}$ phosphors for indoor lighting.
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Du, Peng,Hua, Yongbin,Yu, Jae Su Elsevier 2018 Chemical engineering journal Vol.352 No.-
<P><B>Abstract</B></P> <P>The Sm<SUP>3+</SUP>-doped Ba<SUB>3</SUB>(VO<SUB>4</SUB>)<SUB>2</SUB> microparticles were successfully synthesized via a simple sol-gel method. Both the recorded three-dimensional photoluminescence (PL) emission spectra and counter lines revealed that the near-ultraviolet light was a proper excitation lighting source for the studied samples. Under 352 nm of irradiation, the effect of Sm<SUP>3+</SUP> ion concentration on the PL emission properties of the microparticles was investigated and the optimum doping concentration was demonstrated to be 4 mol%. Based on the diversity in the thermal quenching performance of VO<SUB>4</SUB> <SUP>3−</SUP> group and Sm<SUP>3+</SUP> ions, a novel self-referencing non-invasion optical thermometer with high sensitivity and superior signal discriminability was designed. By taking the advantage of the temperature-dependent fluorescence intensity ratio between the VO<SUB>4</SUB> <SUP>3−</SUP> group and Sm<SUP>3+</SUP> ions, the optical thermometric properties of the Sm<SUP>3+</SUP>-doped Ba<SUB>3</SUB>(VO<SUB>4</SUB>)<SUB>2</SUB> microparticles in the temperature range of 303–463 K were analyzed. The maximum absolute and relative sensor sensitivities, which were hardly influenced by the PL emission intensity, were obtained to be 0.039 K<SUP>−1</SUP> and 2.24% K<SUP>−1</SUP>, respectively. Furthermore, the emitting color of the resultant compounds was found to be significantly dependent on the external temperature. These results suggest that the Sm<SUP>3+</SUP>-doped Ba<SUB>3</SUB>(VO<SUB>4</SUB>)<SUB>2</SUB> microparticles are a potential candidate for high-performance self-referencing optical thermometer and safety sign applications.</P> <P><B>Highlights</B></P> <P> <UL> <LI> All the samples can be excited by NUV light and the optimal doping content was 4 mol%. </LI> <LI> The energy transfer efficiency from VO<SUB>4</SUB> <SUP>3−</SUP> group to Sm<SUP>3+</SUP> ions reached up to 82.3% when <I>x</I> = 0.2. </LI> <LI> The FIR value of PL emission intensities of Sm<SUP>3+</SUP> to VO<SUB>4</SUB> <SUP>3−</SUP> was dependent on the temperature. </LI> <LI> The maximum absolution and relative sensor sensitivities were 0.039 K<SUP>−1</SUP> and 2.24% K<SUP>−1</SUP>, respectively. </LI> <LI> The emitting color relied on the temperature, which makes it suitable for safety sign. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Critic acid-assisted sol-gel synthesis of bifunctional Ba<SUB>3</SUB>(VO<SUB>4</SUB>)<SUB>2</SUB>:3<I>x</I>Sm<SUP>3+</SUP> microparticles for non-contact optical temperature sensor and safety sign.</P> <P>[DISPLAY OMISSION]</P>
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