Results 51 to 60 of about 15,517,414 (328)

Multi-response optimization of Artemia hatching process using split-split-plot design based response surface methodology

Scientific Reports, 2017
A novel method, BBD-SSPD is proposed by the combination of Box-Behnken Design (BBD) and Split-Split Plot Design (SSPD) which would ensure minimum number of experimental runs, leading to economical utilization in multi- factorial experiments.
V. V. Arun, N. Saharan, V. Ramasubramanian, A. M. Babitha Rani, K. Salin, Ravindra Sontakke, H. Haridas, D. G. Pazhayamadom   +7 more
semanticscholar   +1 more source

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

Population Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

The Abundances of Nitrogen and Oxygen in Damped Lyman Alpha Systems

, 2002
We take a fresh look at the abundance of nitrogen in DLAs with oxygen abundances between 1/10 and 1/100 of solar. This is a metallicity regime poorly sampled in the local universe and where QSO absorbers may hold clues to both the nucleosynthetic origin ...
Becker, Bowen, Centurión, Contini, Crone, D'Odorico, Dawson, Dekker, Dessauges-Zavadsky, Edmunds, Edvardsson, Ellison, Ellison, Ferguson, Grevesse, Henry, Israelian, Israelian, Izotov, Izotov, J. Bergeron, Kobulnicky, Larsen, Ledoux, Levshakov, Lu, M. Pettini, Maeder, Marigo, Matteucci, Matteucci, Meyer, Meyer, Meynet, Molaro, Norris, Outram, P. Petitjean, Pettini, Pettini, Pettini, Pettini, Pettini, Pettini, Pettini, Pilyugin, Prochaska, Prochaska, Prochaska, Prochaska, Prochaska, S. L. Ellison, Savage, Shapley, Steidel, Takada-Hidai, Thurston, van den Hoek, van Zee, van Zee, Vladilo, Vladilo, Vladilo   +62 more
core   +2 more sources

Carbon dioxide balance of subarctic tundra from plot to regional scales

, 2012
We report here the carbon dioxide (CO 2 ) budget of a 98.6 km 2 subarctic tundra area in northeast European Russia based on measurements at two different scales and two independent upscaling approaches.
M. Marushchak, I. Kiepe, C. Biasi, V. Elsakov, T. Friborg, T. Johansson, H. Soegaard, T. Virtanen, P. Martikainen   +8 more
semanticscholar   +1 more source

Optimal plot design in a multipurpose forest inventory

Forest Ecosystems, 2015
BackgroundWe explore the factors affecting the optimal plot design (size and type as well as the subsample tree selection strategies within a plot) and their relative importance in defining the optimal plot design in amultipurpose forest inventory.
H. Henttonen, A. Kangas
semanticscholar   +1 more source

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

Frequency spectra of cosmic ray air shower radio emission measured with LOPES [PDF]

, 2008
AIMS: We wish to study the spectral dependence of the radio emission from cosmic-ray air showers around 100 PeV (1017 eV). METHODS: We observe short radio pulses in a broad frequency band with the dipole-interferometer LOPES (LOFAR Prototype Station ...
A. Chiavassa, A. Haungs, A. Horneffer, A. Nigl, A. Saftoiu, A. Schmidt, A. Weindl, Allan, Allan, Allan, Allan, Allan, Antoni, Ardouin, Askaryan, B. Mitrica, Buitink, C. Grupen, C. Meurer, C. Morello, D. Heck, D. Kickelbick, E. Cantoni, F. Badea, F. Cossavella, F. Di Pierro, F. Schröder, Falcke, Falcke, G. C. Trinchero, G. Navarra, G. Toma, Gurevich, H. Bozdog, H. Butcher, H. Falcke, H. Gemmeke, H. J. Mathes, H. J. Mayer, H. Rebel, H. Schieler, H. Ulrich, Huege, Huege, Huege, I. M. Brancus, J. A. Zensus, J. Auffenberg, J. Blümer, J. C. Arteaga, J. Kuijpers, J. Oehlschläger, J. R. Hörandel, J. Rautenberg, J. van Buren, J. Wochele, J. Zabierowski, Jelley, K. Bekk, K. Daumiller, K. Singh, K.-H. Kampert, Kahn, L. Bähren, M. Bertaina, M. Brüggemann, M. Manewald, M. Petcu, M. Roth, M. Stümpert, Mandolesi, Navarra, O. Krömer, O. Sima, P. Buchholz, P. Doll, P. G. Isar, P. L. Biermann, P. L. Ghia, P. Łuczak, R. Engel, R. Glasstetter, S. Buitink, S. Lafebre, S. Nehls, S. Ostapchenko, S. Over, Spencer, T. Asch, T. Huege, T. Pierog, V. de Souza, W. D. Apel, W. Walkowiak, Y. Kolotaev   +94 more
core   +4 more sources

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

Population Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

Microstructure and magnetic anisotropy of electrospun Cu$_{1-x}$Zn$_x$Fe$_2$O$_4$ nanofibers: A local probe study

, 2011
Understanding the phenomena at the nanometer scale is of fundamental importance for future improvements of desired properties of nanomaterials. We report a detailed investigation of the microstructure and the resulting magnetic anisotropy by magnetic ...
Li, Zhiwei, Pan, Weiwei, Yi, Haibo, Zhang, Junli   +3 more
core   +1 more source

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

Population Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source