5 Works

Effect of B-site Co substitution on the structure and magnetic properties of nanocrystalline neodymium orthoferrite synthesized by auto-combustion

Edwin A Nforna, Edwin Akongnwi Nforna, Patrice Kenfack Tsobnang, Roussin Lontio Fomekong, Hypolite Mathias Kamta Tedjieukeng, John Ngolui Lambi & Julius Numbonui Ghogomu
Samples of cobalt-doped neodymium orthoferrite compounds, NdCoxFe1-xO3 (0.0 ≤ x ≤ 0.5) were synthesized via glycine auto-combustion between 250 – 300 °C and calcined at 500 °C for two hours. X-ray diffraction showed that all compounds had an orthorhombic perovskite structure with space group Pbnm. Increasing cobalt doping gradually reduced the lattice parameters and contracted the unit cell volume. Both X-ray diffraction and Scanning Electron Microscopy showed that the particles were spherical and in the...

Effect of B-site co-substitution on the structure and magnetic properties of nanocrystalline neodymium orthoferrite synthesized by auto-combustion

Edwin A. Nforna, Patrice Kenfack Tsobnang, Roussin Lontio Fomekong, Hypolite Mathias Tedjieukeng, John Ngolui Lambi & Julius Numbonui Ghogomu
Samples of cobalt-doped neodymium orthoferrite compounds, NdCoxFe1-xO3 (0.0 ≤ x ≤ 0.5) were synthesized via glycine auto-combustion between 250 – 300 °C and calcined at 500 °C for two hours. X-ray diffraction showed that all compounds had an orthorhombic perovskite structure with space group Pbnm. Increasing cobalt doping gradually reduced the lattice parameters and contracted the unit cell volume. Both X-ray diffraction and Scanning Electron Microscopy showed that the particles were spherical and in the...

Variation in behavioural traits of two frugivorous mammals may lead to differential responses to human disturbance

Luc Roscelin Dongmo Tédonzong, Jacob Willie, Sandra Tewamba Makengveu, Luc Lens & Nikki Tagg
Human activities can lead to a shift in wildlife species’ spatial distribution. Understanding the specific effects of human activities on ranging behaviour can improve conservation management of wildlife populations in human-dominated landscapes. This study evaluated the effects of forest use by humans on the spatial distribution of mammal species with different behavioural adaptations, using sympatric western lowland gorilla and central chimpanzee as focal species. We collected data on great ape nest locations, ecological and physical...

The distribution of plant consumption traits across habitat types and the patterns of fruit availability suggest a mechanism of coexistence of two sympatric frugivorous mammals

Luc Roscelin Dongmo Tédonzong, Jacob Willie, Nikki Tagg, Martin N. Tchamba, Tsi Evaristus Angwafo, Ada Myriane Patipe Keuko, Jacques Keumo Kuenbou, Charles-Albert Petre & Luc Lens
Understanding the mechanisms governing the coexistence of organisms is an important question in ecology, and providing potential solutions contributes to conservation science. In this study, we evaluated the contribution of several mechanisms to the coexistence of two sympatric frugivores, using western lowland gorillas (Gorilla gorilla gorilla) and central chimpanzees (Pan troglodytes troglodytes) in a tropical rainforest of southeast Cameroon as a model system. We collected great ape fecal samples to determine and classify fruit species...

Dataset of Nitrogen Fixation Related Traits of Cowpeas in Low Phosphorus Soils of Cameroon.

Atemkeng Maureen Fonji & Yousseu Tietchou Cyrille
The use of morphological attributes have traditionally been used to establish phylogenetic relationships among genotypes between and within species and for various other purposes including identification of duplicates, studies of genetic variation patterns, and correlation of characteristics of agronomic importance. Therefore characterizing cowpea genotypes is an important step in conserving biodiversity and facilitating breeding. A pot experiment was used to characterize 50 cowpea (Vigna unguiculata ) genotypes in the screen house at Nkolbisson IITA, Cameroon....

Registration Year

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Affiliations

  • Universite De Dschang
    4
  • Ghent University
    2
  • Royal Zoological Society of Antwerp
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  • Université de Yaoundé I
    2
  • University of Bamenda
    2
  • Leibniz Centre for Agricultural Landscape Research
    1
  • Université de Dschang
    1
  • Royal Zoological Society of Scotland
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