Search Results - (Author, Cooperation:J. SVOBODA)

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  1. 1
    L Klus, V Vaclavik, T Dvorsky, J Svoboda and R Papesch
    Institute of Physics (IOP)
    Published 2018
    Staff View
    Publication Date:
    2018-07-17
    Publisher:
    Institute of Physics (IOP)
    Print ISSN:
    1757-8981
    Electronic ISSN:
    1757-899X
    Topics:
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by:
    http://www.iop.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    J Svoboda, V Vaclavik, T Dvorsky, L Klus and R Zajac
    Institute of Physics (IOP)
    Published 2018
    Staff View
    Publication Date:
    2018-07-17
    Publisher:
    Institute of Physics (IOP)
    Print ISSN:
    1757-8981
    Electronic ISSN:
    1757-899X
    Topics:
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by:
    http://www.iop.org/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Staff View
    Publication Date:
    2011-11-04
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Animals ; Dental Enamel/anatomy & histology ; Emigration and Immigration/*history ; Fossils ; History, Ancient ; Humans ; Italy ; Molar/anatomy & histology ; Neanderthals/*physiology
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  4. 4
    Q. Fu ; C. Posth ; M. Hajdinjak ; M. Petr ; S. Mallick ; D. Fernandes ; A. Furtwangler ; W. Haak ; M. Meyer ; A. Mittnik ; B. Nickel ; A. Peltzer ; N. Rohland ; V. Slon ; S. Talamo ; I. Lazaridis ; M. Lipson ; I. Mathieson ; S. Schiffels ; P. Skoglund ; A. P. Derevianko ; N. Drozdov ; V. Slavinsky ; A. Tsybankov ; R. G. Cremonesi ; F. Mallegni ; B. Gely ; E. Vacca ; M. R. Morales ; L. G. Straus ; C. Neugebauer-Maresch ; M. Teschler-Nicola ; S. Constantin ; O. T. Moldovan ; S. Benazzi ; M. Peresani ; D. Coppola ; M. Lari ; S. Ricci ; A. Ronchitelli ; F. Valentin ; C. Thevenet ; K. Wehrberger ; D. Grigorescu ; H. Rougier ; I. Crevecoeur ; D. Flas ; P. Semal ; M. A. Mannino ; C. Cupillard ; H. Bocherens ; N. J. Conard ; K. Harvati ; V. Moiseyev ; D. G. Drucker ; J. Svoboda ; M. P. Richards ; D. Caramelli ; R. Pinhasi ; J. Kelso ; N. Patterson ; J. Krause ; S. Paabo ; D. Reich
    Nature Publishing Group (NPG)
    Published 2016
    Staff View
    Publication Date:
    2016-05-03
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  5. 5
    Staff View
    ISSN:
    1365-2486
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Biology
    Energy, Environment Protection, Nuclear Power Engineering
    Geography
    Notes:
    Passive open-top devices have been proposed as a method to experimentally increase temperature in high-latitude ecosystems. There is, however, little documentation on the efficacy of these devices. This paper examines the performance of four open-top chambers for altering temperature at six sites in the Arctic and Antarctica. Most of the heating effect was due to daytime warming above ambient; occasional night-time cooling below ambient, especially of air temperatures, depressed mean daily temperature. The mean daily temperatures at four arctic sites were generally increased by 1.2–1.8 °C; but occasionally, temperature depressions also occurred. Under optimal conditions at the antarctic site (dry soils, no vegetation, high radiation) mean daily soil temperatures were increased by +2.2 °C (–10 cm) to +5.2 °C (0 cm). Protection from wind may play a more important role than temperature per se in providing a favourable environment for plant growth within open-top devices. Wind speed had a generally negative impact on mean daily temperature. Daily global radiation was both positively and negatively related to chamber temperature response. The effect of chambers on snow accumulation was variable with the Alexandra Fjord site showing an increased accumulation in chambers but no difference in the date of snowmelt, while at Latnjajaure in a deep snowfall site, snowmelt occurred 1–2 weeks earlier in chambers, potentially increasing the growing season. Selection of a passive temperature-enhancing system requires balancing the temperature enhancement desired against potential unwanted ecological effects such as chamber overheating and altered light, moisture, and wind. In general, the more closed the temperature-enhancing system, the higher is the temperature enhancement, but the larger are the unwanted ecological effects. Open-top chambers alter temperature significantly and minimize most unwanted ecological effects; as a consequence, these chambers are a useful tool for studying the response of high-latitude ecosystems to warming.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-2486.1997.gcb136.x

    Articles: DFG German National Licenses
  6. 6
    Staff View
    Publication Date:
    2018-09-07
    Publisher:
    American Society of Hematology (ASH)
    Print ISSN:
    0006-4971
    Electronic ISSN:
    1528-0020
    Topics:
    Biology
    Medicine
    Keywords:
    Lymphoid Neoplasia, Brief Reports, Clinical Trials and Observations
    Published by:
    http://www.hematology.org/

    Latest Papers from Table of Contents or Articles in Press
  7. 7
    Staff View
    Publication Date:
    2018-11-09
    Publisher:
    American Society of Hematology (ASH)
    Print ISSN:
    0006-4971
    Electronic ISSN:
    1528-0020
    Topics:
    Biology
    Medicine
    Keywords:
    Lymphoid Neoplasia, Clinical Trials and Observations
    Published by:
    http://www.hematology.org/

    Latest Papers from Table of Contents or Articles in Press
  8. 8
    LÉVESQUE, E. ; HENRY, G.H.R. ; SVOBODA, J.

    Oxford, UK : Blackwell Science Ltd
    Published 1997
    Staff View
    ISSN:
    1365-2486
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Biology
    Energy, Environment Protection, Nuclear Power Engineering
    Geography
    Notes:
    Phenology and growth of Papaver radicatum Rottb. was monitored over four summers (1990–1993) at 12 sites, along a dolomitic and a granitic altitudinal gradient (330 m a.s.l.–770 m a.s.l.) at Sverdrup Pass, central Ellesmere Island, Canada. The gradients provided substantial differences in environmental characteristics. Three of the four seasons (1990, 1991 and 1993) had more than 400 thawing degree-days (TDD) in the valley, while the 1992 season had less than 300. The granitic sites had consistently higher temperatures than the dolomitic sites, despite their northerly aspect. Increasing elevation reduced total degree-day accumulation (c. 40 degree-days/100 m) and length of potential growing season. The proportion of the population producing flower buds was similar at all sites in any given year, but there were differences among years. Production of flowers and fruits per site, decreased with altitude along the dolomitic gradient in 1991 and 1992. There was no difference in the number of buds or flowers produced per plant with increasing altitude, although larger plants with multiple flowers were found only on low elevation granitic sites. Plants from the dolomitic sites were smaller and flowered, on average, after the site accumulated 150 degree-days, while plants on the granitic sites were larger and bloomed after 200 degree-days. Papaver is able to grow and reproduce over a wide range of environmental conditions and moderate climate warming would likely promote its growth and establishment, unless other factors, especially snow-free periods and water availability, become limiting.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-2486.1997.gcb145.x

    Articles: DFG German National Licenses
  9. 9
    Staff View
    ISSN:
    0378-1119
    Keywords:
    Isochores ; base composition ; hamster ; mammalian genome ; provirus
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0378-1119(91)90196-I

    Articles: DFG German National Licenses
  10. 10
    Shendrik, V.P. ; Svoboda, J. ; Paleta, O. ; Dedek, V.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0022-1139
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/S0022-1139(00)82462-8

    Articles: DFG German National Licenses
  11. 11
    Paleta, O. ; Svoboda, J. ; Dedek, V.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0022-1139
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/S0022-1139(00)84978-7

    Articles: DFG German National Licenses
  12. 12
    Staff View
    ISSN:
    0022-0248
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Geosciences
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0022-0248(94)90938-5

    Articles: DFG German National Licenses
  13. 13
    Svoboda, J. ; Vacek, K.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0029-554X
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Energy, Environment Protection, Nuclear Power Engineering
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0029-554X(75)90152-4

    Articles: DFG German National Licenses
  14. 14
    Svoboda, J. ; Odehnal, M.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0375-9601
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0375-9601(72)90277-0

    Articles: DFG German National Licenses
  15. 15
    Sykova, E. ; Svoboda, J. ; Chvatal, A. ; Jendelova, P.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0167-8760
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Medicine
    Psychology
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0167-8760(89)90339-5

    Articles: DFG German National Licenses
  16. 16
    Svoboda, J. A.
    Springer
    Published 1983
    Staff View
    ISSN:
    1531-5878
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Electrical Engineering, Measurement and Control Technology
    Notes:
    Abstract An upper bound on the order of complexity of a solvable RLC-nullor network is found.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01598146

    Articles: DFG German National Licenses
  17. 17
    Svoboda, J.
    Springer
    Published 1961
    Staff View
    ISSN:
    1420-9071
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Medicine
    Notes:
    Résumé Tolérance immunologique au virus du sarcome de Rous chez les canards. Les résultats obtenus ont été interprétés comme suit: Le virus de Rous par l'action maligne sur les cellules d'autres espèces y provoque la formation d'un complexe antigénique de poulet et rend ces cellules capables d'une croissance progressive, chez les animaux qui tolèrent les antigènes de poulet.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF02161439

    Articles: DFG German National Licenses
  18. 18
    Svoboda, J. A. ; Lusby, W. R.
    Springer
    Published 1994
    Staff View
    ISSN:
    1420-9071
    Keywords:
    Stored-products insects ; sterol metabolism ; Tribolium castaneum ; Tenebrio molitor ; Plodia interpunctella ; C28 and C29 phytosterols ; 7-dehydrocholesterol ; cholesterol
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Medicine
    Notes:
    Abstract A comparison of sterol utilization by 3 stored-products insects revealed very different capabilities. The fluor beetle,Tribolium castaneum dealkylates and converts dietary sitosterol to about equal amounts of cholesterol (43.7%) and 7-dehydrocholeterol (39.8%), whereas another flour beetle,Tenebrio molitor, produces considerably less 7-dehydrocholesterol (16.8%) and relatively more cholesterol (66.7%) from sitosterol. The lepidopteran,Plodia interpunctella, utilized dietary sterol very similar to plant-feeding lepidoptera, producing primarily cholesterol (86.5%) from sitosterol.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01992053

    Articles: DFG German National Licenses
  19. 19
    Svoboda, J. A. ; Schiff, N. M. ; Feldlaufer, M. F.
    Springer
    Published 1995
    Staff View
    ISSN:
    1420-9071
    Keywords:
    Sawflies ; sterols ; 7-dehydrocholesterol ; cholesterol ; dealkylation
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Medicine
    Notes:
    Abstract Three species of sawflies, along with their particular host plants, were examined for neutral sterols. Cholesterol was the predominant sterol in the sawfliesDolerus nitens (56.6%) andAneugmenus flavipes (73.0%), with lesser amounts of sitosterol, campesterol and desmosterol.Xiphydria maculata, however, contained unusually high levels (74.9%) of 7-dehydrocholesterol. Based on the sterol composition of their individual host plants, which contained primarily 28- and 29-carbon sterols, it is likely that all three sawfly species are capable of dealkylation of phytosterols.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01929359

    Articles: DFG German National Licenses
  20. 20
    Feldlaufer, M. F. ; Svoboda, J. A. ; Herbert, E. W.
    Springer
    Published 1986
    Staff View
    ISSN:
    1420-9071
    Keywords:
    Ecdysteroids ; molting hormones ; makisterone A ; HPLC ; RIA ; honey bee ; ovaries ; Apis mellifera ; neutral sterols ; 24-methylenecholesterol
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Medicine
    Notes:
    Summary Makisterone A, a 28-carbon ecdysteroid (molting hormone) has been isolated from the ovaries of queen bees. Analysis by reversed-phase and silica high performance liquid chromatography (HPLC) in conjunction with a radioimmune assay (RIA) revealed about 11 ng of makisterone A present per gram of ovaries on a fresh weight basis. No C27 ecdysteroids were detected. The predominant neutral sterol present was 24-methylenecholesterol.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01952468

    Articles: DFG German National Licenses