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101篇 您的检索式:作者名="Janne H"
    题名 作者 年代 出处 被引量
1Electronic structure of the SrAl_2O_4:Eu^(2+) persistent luminescence material显示文摘The electronic structure of the strontium aluminate (SrAl2O4:Eu2+) materials was studied with a combined experimental and theoretical approach. The UV-VUV synchrotron radiation was applied in the experimental study while the electronic structure of the non-optimized and optimized crystal structure were investigated theoretically by using the density functional theory. The structure of the va- lence and conduction bands as well as the band gap energy of the material together with the position of the Eu2+ 4f7 8S7/2 ground state were calculated. The calculated band gap energy (6.4 eV) agreed well with the experimental value of 6.6 eV. The valence band consisted mainly of oxygen states whereas the bottom of the conduction band of strontium states. In agreement with the experimental results, the calculated 4f7 8S7/2 ground state of Eu2+ lies in the energy gap of the host. The position of the 4f7 ground state depended on the Coulomb repulsion strength. The position of the 4f7 ground state with respect to the valence and conduction bands was discussed using theoretical and experimental evidence available.Jorma Hls Taneli Laamanen Mika Lastusaari Janne Niittykoski Pavel Novák 2009Journal of Rare Earths2009,27,4:9
2Synchrotron radiation investigations of the Sr_2MgSi_2O_7:Eu^(2+),R^(3+) persistent luminescence materials显示文摘The electronic and defect energy level structure of polycrystalline Sr2MgSi2O7:Eu2+,R3+ persistent luminescence materials were studied with thermoluminescence and different synchrotron radiation spectroscopies (UV-VUV emission and excitation, X-ray absorption near-edge spectroscopy (XANES) and extended X-ray absorption fine structure (EXAFS)). Special attention was paid on the effect of the R3+ co-dopants on the persistent luminescence properties of the materials. Theoretical calculations using the density functional theory (DFT) were carried out simultaneously with the experimental work. The experimental band gap energy (Eg) value of ca. 7.1 eV agreed very well with the DFT value of 6.7 eV. The variation of the Eg value was attempted to relate with the trap structure as well as with the different properties of the R3+ co-dopants. The trap level energy distribution depended strongly on the R3+ co-dopant except for the shallowest trap energy above the room temperature remaining practically the same, however. The different processes in the mechanism of persistent luminescence from Sr2MgSi2O7:Eu2+,R3+ were assembled and their contributions discussed.Tuomas Aitasalo Jukka Hassinen Jorma Hls Taneli Laamanen Mika Lastusaari Marja Malkamki Janne Niittykoski Pavel Novák 2009Journal of Rare Earths2009,27,4:5
3Geometric camera calibration using cir-cular control points显示文摘JANNE H 2000IEEE Transactions on Pat- tern Analysis and Machine Intelligence2000,22,10:1
4Templating Organic Semi- conductors via Self-assembly of Polymer Colloids显示文摘Raffaele M Janne R Glenn H 2003Sci- ence2003,299,:1
5Self-reported empathic a- bilities in schizophrenia: A longitudinal perspective 显示文摘Haker H Schimansky J Jann S 2012Psychia- try Res2012,200,23:1
6EGFR mutations in hmg cancer: Correlation with clinical response to gefitinib therapy 显示文摘Paez JG Janne PA Lee JC Traey S Greulich H Gabriel S el al 2004Science2004,304,4:1
7Geometric camera calibration using circular control points 显示文摘JANNE H 2000IEEE Transactions on Pattern Analysis and Machine Intelligence2000,22,10:1
8Maternal characteristics and lifestyle factors and the risk of delivering high birth weight infants显示文摘Janne O Tine B H Ulrik K 2003Obstetrics& Gynecology2003,102,1:1
9Templating Organic Semiconductors via Self-assembly of Polymer Colloids显示文摘Raffaele M Janne R Glenn H 2003Science2003,,299:1
10Prognostic rele- vance of a novel TNM classification system for upper gastroentero- pancreatic neuroendocrine tumors 显示文摘Pape UF Jann H Muller-Nordhorn J 2008Cancer2008,113,2:1
11Resetting semiactives tiffness damper for seismic response control 显示文摘Jann N Y Kim J H Anil K A 2000ASCE Journal of Structural Engineering2000,126,14:1
12Myelodysplastic cells in patients reprogram mesenchymal stromal cells to establish a transplantable stem cell niche disease unit 显示文摘Medyouf H Mossner M Jann JC 2014Cell Stem Cell2014,14,6:1
13Effects of long-term exercise and diet intervention on plasma adipokine concentrations显示文摘MERETHE H R JANNE E R MARIT B V 2007Am J Clin Nutr2007,86,:1
14Covalent modification of the androgen receptor by small ubiquitin-like modifier ( SUMO-I ) 显示文摘Poukka H Karvonen U Janne O A 2000Proc Natl Acad Sci USA2000,97,14:1
15Monitoring environmental performance of the forestry supply chain using RFID显示文摘Anders B Martin E Janne H 2011Computers in Industry2011,62,8:1
16Replenishment and properties of cytosol prgesterone receptor in rabbit, uterus after multiple progesterone administrations显示文摘Isotalo H Isomaa V and Janne O 1981Endocrinology1981,108,:1
17Expanding the ecological niche approach: Relationships between variability in niche position and species richness显示文摘Janne S Jani H Jyrki L Risto V 2011Ecological Complexity2011,8,1:1
18New conceptsin the pathogenesis, diagnosis and treatment otbaceteremiaandSepsis 显示文摘Reetta H Janne A 2011Journal of Infection2011,63,6:1
19EGFR mutations in lung cancer:correlation with clinical response to gefitinib therapy显示文摘Paez JG Janne PA Lee JC Tracy S Greulich H Gabriel S 0,,5676:1
20Allowance for moisture content of particle boards for formaldehyde determination显示文摘JANN O DEPPE H J 1990Holz als Rob-Werkstoff1990,48,:1
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