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1

Hydrothermal Synthesis and Microstructural, Optical Properties Characterization of YVO_4 Phosphor Powder

100%

Zhang S., Liang Y., Gao X., Liu H.

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vol. 125

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issue 1

105-110

EN

The phonon energy of YVO_4 crystal is lower than other usual compounds of salt. So it is suitable as host material for down-conversion materials. Hydrothermal method was adopted to synthesize YVO_4 phosphor powder with the use of yttrium oxide and sodium vanadate as raw material. The change in the relative integral intensity of the (200) and (112) diffraction peaks indicates that macroscopic stress in the lattice obviously changes with the elevated hydrothermal reaction temperature. The YVO_4 phosphor powder synthesized involves a certain agglomeration of small particles. The phonon vibration in the YVO_4 originates mainly from the internal vibrations in the vanadium-oxygen tetrahedron, in addition to the Y-O and O-H vibrations. Due to a low phonon energy of only 2.8188 × 10^{-21} J, YVO_4 helps to improve the down-conversion efficiency of rare-earth ions. A bandgap value of approximately 3.8 eV for the synthesized YVO_4 powders leads to good absorption properties in the ultraviolet region. Upon excitation by the 320 nm ultraviolet photon, the intrinsic emission of YVO_4 powders is annihilated, and a broadband emission of VO_4^{3-} near 450 nm is observed at room temperature. The YVO_4 phosphor powder synthesized at 180C exhibits the maximum photoluminescence intensity because of its excellent crystallization.

2

Scanning Tunneling Microscopy of Ordered Organic Monolayer Films on Si(001)

100%

Hamers R., Hovis J., Liu H.

Acta Physica Polonica A

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1998

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vol. 93

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issue 2

289-295

EN

Scanning tunneling microscopy and optical spectroscopy techniques have been utilized to investigate the formation of ordered organic monolayer films on the (001) face of silicon. Cyclopentene and 1,5-cyclooctadiene both produce monolayer films that are ordered translationally and rotationally. The rotational orientations of the molecules arise from the directional interaction of the π orbitals of the starting alkene with the π orbital of the dimers comprising the reconstructed Si(001) surface, with the Si(001) surface acting as a template for determining the directionality of molecules in the subsequent organic film. Using single-domain Si(001) samples, it is shown that the molecular films also exhibit anisotropy in optical properties when measured on centimeter length scales.

3

Tuning The Crystallographic Structure And Morphology Of Nanocrystalline CaB6 Films Deposited By DC Magnetron Sputtering

88%

Zhang L., Zhao G., Liu H., Min G., Yu H.

Archives of Metallurgy and Materials

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2015

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issue 2

4

Structural and Optical Properties of ZnO Nanowires Doped with Magnesium

88%

Zhuang H., Wang J., Liu H., Li J., Xu P.

Acta Physica Polonica A

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2011

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vol. 119

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issue 6

819-823

EN

ZnO nanowires doped with Mg have been successfully prepared on Au-coated Si (111) substrates using chemical vapor deposition method with a mixture of ZnO, Mg, and activated carbon powders as reactants at 850°C. The structural, compositional, morphological and optical properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, and photoluminescence spectroscopy. The nanowires are single crystalline in nature and preferentially grow up along [0001] direction with the average diameter and length of about 60 nm and several hundred micrometers, respectively, thinner and longer than the results of literature using the similar method. Room temperature photoluminescence spectroscopy shows a blueshift from the bulk band gap emission, which can be attributed to Mg doping that were detected by energy dispersive X-ray analysis EDX in the nanowires. Finally, the possible growth mechanism of crystalline ZnO nanowires is discussed briefly.

5

M cells are involved in pathogenesis of human contact lens-associated giant papillary conjunctivitis

88%

Zhong X., Liu H., Pu A., Xia X., Zhou X.

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2007

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vol. 55

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issue 3

173-177

EN

The objective was to study the pathogenesis of contact lens-associated giant papillary conjunctivitis (CL-GPC). Materials and Methods: Twenty-one biopsies of conjunctival giant papillae were obtained from soft contact lens wearers. The tissues were fixed in 4% paraformaldehyde and embedded in paraffin. Sections of 5 mum thickness were used for studies of histology and immunohistochemistry of pan-B and pan-T cell distributions. Results: Conjunctival epitheliums on the top of conjunctiva-associated lymphoid tissue typically lacked goblet cells. Lymphocytes from underlying lymphoid follicle were pressed into intra-epithelial 'pockets' formed through epithelial invagination. Under the follicle-associated epithelium, pan-B cells were mostly gathered in the central folliclar area and intraepithelial pockets, while CD3-positive T cells were predominantly distributed in parafolliclar region, but only a few in the intraepithelial pockets. Conclusions: Membranous epithelial cells (M cells) play a key role in the pathogenesis of CL-GPC for the binding and translocation of antigen and pathogen.

6

Thermal Mechanical Stress Analysis of Ladle Lining with Integral Brick Joint

76%

Li G., Liu H., Chang W., Kong J., Sun Y., Jiang G.

Archives of Metallurgy and Materials

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2018

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vol. 63

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issue 2

7

Horizontal transfer and functional evaluation of high pathogenicity islands in Avian Escherichia coli

64%

Tu J., Qi K., Song X., Xue T., Ji H., Shao Y., Liu H., Zhou X., Zhu L.

Polish Journal of Veterinary Sciences

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2017

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issue 2

8

Development of a SYBR Green I real-time PCR assay for detection of novel porcine parvovirus 7

64%

Li Y. D., Yu Z. D., Bai C. X., Zhang D., Sun P., L P. M., Liu H., Wang J., Wang Y., Li Y. D., Yu Z. D., Bai C. X., Zhang D., Sun P., L P. M., Liu H., Wang J., Wang Y.

Polish Journal of Veterinary Sciences

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2021

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vol. 24

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issue 1

9

Relationship of adiponectin, leptin, visfatin and IGF-1 in cow’s venous blood and venous cord blood with calf birth weight

55%

Shen L., Zhu Y., Xiao J., Deng J., Peng G., Zuo Z., Yu S., Ma X., Zhong Z., Ren Z., Zhou Z., Liu H., Zong X., Cao S., Shen L., Zhu Y., Xiao J., Deng J., Peng G., Zuo Z., Yu S., Ma X., Zhong Z., Ren Z., Zhou Z., Liu H., Zong X., Cao S.

Polish Journal of Veterinary Sciences

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2019

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issue 3

10

Characterization of serum adiponectin and leptin in healthy perinatal dairy cows or cows with ketosis, and their effectson ketosis involved indices

47%

Shen L., Qian B., Xiao J., Zhu Y., Hussain S., Deng J., Peng G., Zuo Z., Zou L., Yu S., Ma X., Zhong Z., Ren Z., Wang Y., Liu H., Zhou Z., Cai D., Hu Y., Zong X., Cao S., Shen L., Qian B., Xiao J., Zhu Y., Hussain S., Deng J., Peng G., Zuo Z., Zou L., Yu S., Ma X., Zhong Z., Ren Z., Wang Y., Liu H., Zhou Z., Cai D., Hu Y., Zong X., Cao S.

Polish Journal of Veterinary Sciences

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2020

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vol. 23

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issue 3

Refine search results

Hydrothermal Synthesis and Microstructural, Optical Properties Characterization of YVO_4 Phosphor Powder

Scanning Tunneling Microscopy of Ordered Organic Monolayer Films on Si(001)

Tuning The Crystallographic Structure And Morphology Of Nanocrystalline CaB6 Films Deposited By DC Magnetron Sputtering

Structural and Optical Properties of ZnO Nanowires Doped with Magnesium

M cells are involved in pathogenesis of human contact lens-associated giant papillary conjunctivitis

Thermal Mechanical Stress Analysis of Ladle Lining with Integral Brick Joint

Horizontal transfer and functional evaluation of high pathogenicity islands in Avian Escherichia coli

Development of a SYBR Green I real-time PCR assay for detection of novel porcine parvovirus 7

Relationship of adiponectin, leptin, visfatin and IGF-1 in cow’s venous blood and venous cord blood with calf birth weight

Characterization of serum adiponectin and leptin in healthy perinatal dairy cows or cows with ketosis, and their effectson ketosis involved indices