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33篇 您的检索式:作者名="Kenfack"
    题名 作者 年代 出处 被引量
1Rarity and abundance in a diverse African forest显示文摘Kenfack D Thomas DW Ghuyong G Condit R 0,,:1
2Synthesis and thermal decomposition of freeze-dried Copper-iron formates显示文摘Kenfack F Langbain H 2005Thermochimica Acta2005,426,1:1
3Spinel ferrites of the quaternary system Cu-Ni-Fe-O: Synthesis and characterization显示文摘F. Kenfack H. Langbein 2006Journal of Materials Science2006,,12:1
4An innovative coupled solar-biological system at field pilot scale for the treatment of biorecalcitrant pollutants 显示文摘Sarria V Kenfack S Guillod O 2003Journal of Photochemistry and Photobiology A:Chemistry2003,159,:1
5An innovative coupled solar-biological system at field pilot scale for the treatment ofbiorecalcitrant pollutants显示文摘Victor Sarria Simeon Kenfack Olivier Guillod 2003Journal of Photochemistry and Photobiology A: Chemistry2003,159,:1
6Ab in-itio study of the solvent H-bonding effect on ESIPT reac-tion and electronic transitions of 3-hydroxychromone de-rivatives显示文摘Kenfack C A Klymchenko A S Duportail G 0,,25:1
7Program on immu- nization and cold chain monitoring:the status in eight health districts in Cameroon显示文摘Ateudjieu J Kenfack B Nkontchou B W 2013BMC Res Notes2013,6,:1
8An innovative coupled solar-biological system atfield pilot scale for the treatment of biorecalcitrant pollutants显示文摘Sarria V Kenfack S Guillod O 2003Journal ofPhotochemistry and Photobiology A:Chemistry2003,159,:1
9Synthesis and thermal decomposition of freeze-dried copper-iron formates显示文摘KENFACK F LANGBEIN H 2005Thermochimica Acta2005,426,:1
10Contribution to the long-term generation scheduling of the cameroonian electricity production system显示文摘T Simo F Kenfack J M Ngundam 2007Electric Power Systems Research2007,77,10:1
11Bifurcation structure of two coupled periodically driven double-well Duffing oscillators显示文摘Anatole Kenfack 2003Chaos Solitons and FractaIs2003,15,:1
12Stochastic resonance in cou- pled underdamped bistable systems 显示文摘KENFACK A SINGH K P 2010Physical Review E2010,82,4:1
13Optimal Scheduling of Large-scale Hydrothermal Power Systems Using the Lagrangian Relaxation Technique显示文摘Ngundam J M Kenfack F Tatietse T T 2000Electrical Power and Energy Systems2000,22,4:1
14A Standard protocol for liana censuses显示文摘GERWING J J SCHNITZER S A BURNHAM R J BONGERS F CHAVE J DEWALT S J EWANGO C E N FOSTER R KENFACK D MARTINEZ-RAMOS M PARREN M PARTHASARATHY N PEREZ-SALICRUP D R PUTZ F E THOMAS D W 2006Biotropica2006,38,2:1
15Cardiac output by Modelflow method from intra-arterial and fingertip pulse pressure profiles显示文摘AZABJI KENFACK M LADOR F LICKER M 2004Clin Sci2004,106,11:1
16Nonlinear spring model for frictional stick-slip motion显示文摘DJUIDJE KENMOE G KENFACK JIOTSA A KO- FANE T C 2009The European Physical Journal: B2009,70,3:1
17Optimal schednlillg of large-scale hydrothermal power systems using the Lagrangian relaxation technique显示文摘Ngundam J M Kenfack F Tafietse T T 2000Electrical Power and Energy Systems2000,22,4:1
18Demographic variation and habitat specialization of tree species in a diverse tropical forest of Cameroon显示文摘Background: Many tree species in tropical forests have distributions tracking local ridge-slope-valley topography.Previous work in a 50-ha plot in Korup National Park, Cameroon, demonstrated that 272 species, or 63% of those tested, were significantly associated with topography.Methods: We used two censuses of 329,000 trees ≥1 cm dbh to examine demographic variation at this site that would account for those observed habitat preferences. We tested two predictions. First, within a given topographic habitat, species specializing on that habitat(‘residents') should outperform species that are specialists of other habitats(‘foreigners'). Second, across different topographic habitats, species should perform best in the habitat on which they specialize(‘home') compared to other habitats(‘away'). Species' performance was estimated using growth and mortality rates.Results: In hierarchical models with species identity as a random effect, we found no evidence of a demographic advantage to resident species. Indeed, growth rates were most often higher for foreign species. Similarly, comparisons of species on their home vs. away habitats revealed no sign of a performance advantage on the home habitat.Conclusions: We reject the hypothesis that species distributions along a ridge-valley catena at Korup are caused by species differences in trees ≥1 cm dbh. Since there must be a demographic cause for habitat specialization, we offer three alternatives. First, the demographic advantage specialists have at home occurs at the reproductive or seedling stage, in sizes smaller than we census in the forest plot. Second, species may have higher performance on their preferred habitat when density is low, but when population builds up, there are negative density-dependent feedbacks that reduce performance. Third, demographic filtering may be produced by extreme environmental conditions that we did not observe during the census interval.David Kenfack George B Chuyong Richard Condit Sabrina E Russo Duncan W Thomas 2014Forest Ecosystems2014,1,4:1
19Cardiac output by Modelflow method from intra-arterial and fingertip pulsepressure profiles 显示文摘AZABJI KENFACK M LADOR F LICKER M 2004Clin Sci (Lond)2004,106,4:1
20Correction of cardiac output obtained by Modelflow from finger pulse pressure profiles with a respiratory method in humans 显示文摘TAM E AZABJI KENFACK M CAUTERO M 2004Clin Sci (Lond)2004,106,4:1
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