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| 1 | Electronic 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 Hls Taneli Laamanen Mika Lastusaari Janne Niittykoski Pavel Novák | 2009 | Journal of Rare Earths2009，27，4： | 9 |
| 2 | Comparing the removal of polycyclic aromatic hydrocarbons in soil after different bioremediation approaches in relation to the extracellular enzyme activities显示文摘A 120-day experiment was conducted to compare the removal of polycyclic aromatic hydrocarbons(PAHs) from agricultural soil after natural attenuation(NA), phytoremediation(P), mycoremediation(M), and plant-assisted mycoremediation(PAM) approaches in relation to the extracellular enzyme activities in soil. The NA treatment removed the total soil PAH content negligibly. The P treatment using maize(Zea mays) enhanced only the removal of low and medium molecular PAHs. The Pleurotus ostreatus cultivated on 30–50 mm wood chip substrate used in M treatment was the most successful in the removal of majority PAHs. Therefore,significantly(p < 0.05) highest total PAH removal by 541.4 μg/kg dw(dry weight)(36%) from all tested M treatments was observed. When using the same fungal substrate together with maize in PAM treatment, the total PAH removal was not statistically different from the previous M treatment. However, the maize-assisted mycoremediation treatment significantly boosted fungal biomass, microbial and manganese peroxidase activity in soil which strongly correlated with the removal of total PAHs. The higher PAH removal in that PAM treatment could be reflected in the following post-harvest time. Our suggested M and PAM approaches could be promising in situ bioremediation strategies for PAH-contaminated soils. | Zdeněk Ko?ná? Tereza ?ástková Lucie Wiesnerová Luká? Praus Ivan Jablonsky Martin Koudela Pavel Tlusto? | 2019 | Journal of Environmental Sciences2019，31，2： | 6 |
| 3 | Synchrotron 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 Hls Taneli Laamanen Mika Lastusaari Marja Malkamki Janne Niittykoski Pavel Novák | 2009 | Journal of Rare Earths2009，27，4： | 5 |
| 4 | Multiple haploids, triploids, and tetraploids found in modern-day “living fossil” Ginkgo biloba显示文摘Ginkgo biloba,the last extant representative of a lineage of Mesozoic gymnosperms,is one of the few seed plants with an exceptionally long(~300 Myr)evolutionary history free of genome-wide duplications(polyploidy).Despite this genome conservatism,we have recently found a viable spontaneous tetraploid Ginkgo sapling during routine screening of several plants,demonstrating that natural polyploidy is possible in Ginkgo.Here we provide a much wider flow cytometry survey of ploidy in some European Ginkgo collections,and own seedlings(>2200 individuals and~200 cultivars).We found a surprisingly high level of ploidy variation in modern-day Ginkgo and documented altogether 13 haploid,3 triploid,and 10 tetraploid Ginkgo plants or cultivars,most of them being morphologically distinct from common diploids.Haploids frequently produced polyploid(dihaploid)buds or branches.Tetraploids showed some genome size variation.The surveyed plants provide a unique resource for future Ginkgo research and breeding,and they might be used to accelerate the modern diversification of this nearly extinct plant lineage. | PetrŠmarda Lucie Horová Ondřej Knápek Heidi Dieck Martin Dieck Katarína Ražná Pavel Hrubík Laszlo Orlóci Laszlo Papp Kristýna Veselá Pavel Veselý Petr Bureš | 2018 | Horticulture Research2018，5，1： | 4 |
| 5 | Intra-abdominal drainage following pancreatic resection:A systematic review显示文摘AIM: To study all the aspects of drain management in pancreatic surgery.METHODS: We conducted a systematic review according to the PRISMA guidelines. We searched the Cochrane Central Registry of Controlled Trials,EMBASE,Web of Science,and Pub Med(MEDLINE) for relevant articles on drain management in pancreatic surgery. The reference lists of relevant studies were screened to retrieve any further studies. We included all articles that reported clinical studies on human subjects with elective pancreatic resection and that compared various strategies of intra-abdominal drain management,such as drain vs no drain,selective drain use,early vs late drain extraction,and the use of different types of drains. RESULTS: A total of 19 studies concerned with drain management in pancreatic surgery involving 4194 patients were selected for this systematic review. We included studies analyzing the outcomes of pancreatic resection with and without intra-abdominal drains,studies comparing early vs late drain removal and studies analyzing different types of drains. The majority of the studies reporting equal or superior results for pancreatic resection without drains were retrospective and observational with significant selection bias. One recent randomized trial reported higher postoperative morbidity and mortality with routine omission of intraabdominal drains. With respect to the timing of drain removal,all of the included studies reported superior results with early drain removal. Regarding the varioustypes of drains,there is insufficient evidence to determine which type of drain is more suitable following pancreatic resection. CONCLUSION: The prophylactic use of drains remains controversial. When drains are used,early removal is recommended. Further trials comparing types of drains are ongoing. | Filip Cecka Martin Lovecek Bohumil Jon Pavel Skalicky Zdeněk Subrt Cestmír Neoral Alexander Ferko | 2015 | World Journal of Gastroenterology2015，21，40： | 2 |
| 6 | Defect aggregates in the Sr_2MgSi_2O_7 persistent luminescence material显示文摘The crystal and electronic structure of the Eu2+ doped and defect containing Sr2MgSi2O7 persistent luminescence material were studied using the density functional theory(DFT) .The defects may act as energy storage or even luminescence quenching centres in these materials,however their role is very difficult to confirm experimentally.The probability of vacancy formation was studied using the total en-ergy of the defect containing host.Significant structural modifications in the environment of the isolated defects,especially the strontium va-cancy,as well as defect aggregates were found.The experimental band gap energy of Sr2MgSi2O7 was well reproduced by the calculations.The defect induced electron traps close to the host's conduction band were found to act as energy storage sites contributing to its efficient per-sistent luminescence.The interactions between the defects were found to modify both the Eu2+ 4f7 ground state energy as well as the trap structure.The effect of charge compensation induced by the rare earth co-doping on the defect structure and energy storage properties of the persistent luminescence materials was discussed. | Jorma Hls Taneli Laamanen Mika Lastusaari Pavel Novák | 2011 | Journal of Rare Earths2011，29，12： | 2 |
| 7 | Heterogeneity of c-myc expression in histologically similar infiltrating ductal carcinomas of the breast 显示文摘 | PAVELIC ZP PAVELIC K CARTER C P | 1992 | J Cancer Res Clin Oncol1992，118，1： | 1 |
| 8 | A review of trace element concentrations in edible mushrooms显示文摘 | Pavel K | 2000 | J Food Chemistry2000，69，： | 1 |
| 9 | Nuclear distribution of actin and myosin I depends on transcriptional activity of the cell显示文摘 | Katarína Kyselá Anatoly A. Philimonenko Vlada V. Philimonenko Ji?í Janá?ek Michal Kahle Pavel Hozák | 2005 | Histochemistry and Cell Biology2005，，5： | 1 |
| 10 | The role of insulin-like growth factor 2 and its receptors in human tumors显示文摘 | PAVELIC K BUKOVI(C)D PAVELI(C) J | 2002 | Mol Med2002，8，12： | 1 |
| 11 | Aberration of FHIT gene is associated with increased tumor proliferation and decreased apoptosis-clinical evidence in lung and head and neck carcinomas显示文摘 | PAVELIC K KRIZANAC S CACEV T | 2001 | Mol Med2001，7，7： | 1 |
| 12 | The role of insulin-ike growth factor 2 and its receptors in human tumors显示文摘 | PAVELIC K BUKOCIC D PAVELIC J | 2002 | Mol Med2002，8，12： | 1 |
| 13 | The role of insulin-like growth factor 2 and its receptors in human tumors显示文摘 | PAVELIC K BUKOVIC D PAVELIC J | 2002 | Mol Med2002，8，12： | 1 |
| 14 | Characteristics of thermal cycling in a magnesium alloy composite显示文摘 | Frantisek C Pavel L Jens K | 2002 | Materials Science and Engineering2002，325，： | 1 |
| 15 | The role of insulinlike growth fac- tor 2 and its receptors in human tumors 显示文摘 | Pavelic K Bukovic D Pavelic J | 2002 | Mol Med2002，8，12： | 1 |
| 16 | Use of a polar ionic liquid as second column for the comprehensive two-dimensional GC separation of PCBs显示文摘 | MICHAL Z JAN K PAVEL M | 2010 | Journal of Chromatography A2010，1217，37： | 1 |
| 17 | Gastric cancer:the role of insulin-like growth factor 2 (IGF2) and its receptors (IGF-1R and M6P/IGF-2R)显示文摘 | PAVELIC K KOLAK T KAPITANOVI(C)S | 2003 | J Pathol2003，201，3： | 1 |
| 18 | Evidence for a role of EGFR in the Progression of human lung carcinoma显示文摘 | Pavelic K Banjac Z Pavelic J | 1993 | Anticancer Res1993，13，10： | 1 |
| 19 | Mitochondrial DNA sequence heteroplasmy in the Grand Duke of Russia Georgij Romanov establishes the authenticity of the remains of Tsar Nicholas II显示文摘 | Pavel L I Mark J W Rhonda K R | 1996 | Nat Genet1996，12，： | 1 |
| 20 | Thermische umwandlungsprodukte von aminos(a)uren显示文摘 | Heyns K Pavel K | 1957 | Zeitschrift für Naturforschung B1957，12，2： | 1 |
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