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Université de Fribourg

Potential for endozoochorous seed dispersal by sheep and goats : Risk of weed seed transport via animal faeces

Oveisi, Mostafa ; Ojaghi, Ahmad ; Rahimian Mashhadi, Hamid ; Müller‐Schärer, Heinz ; Reza Yazdi, Kamran ; Pourmorad Kaleibar, Behnaz ; Soltani, Elias

In: Weed Research, 2021, vol. 61, no. 1, p. 1-12

Endozoochory is known as an important mechanism for the spread of weeds. We carried out experiments to assess the fate of seeds of several weed species (Convolvulus arvensis, Cuscuta campestris, Rumex crispus, Hordeum spontaneum and Sorghum halepense) after passing through the gut of sheep and goat. Eighteen animals of both sheep and goat received diet mixed with seeds of the weed species or ...

Université de Fribourg

Thermal energy transport across the interface between phase change material n-heneicosane in solid and liquid phases and few-layer graphene

Chilukoti, Hari Krishna ; Zhou, Tianhang ; Ardham, Vikram Reddy ; Böhm, Michael C. ; Müller-Plathe, Florian

In: The Journal of Physical Chemistry C, 2019, vol. 123, no. 48, p. 29192–29202

Molecular dynamics simulations have been performed to investigate the mechanism of thermal energy transport at the interface between n-heneicosane in solid and liquid phases and few-layer graphene at different temperatures under two heating modes (in the “heat-matrix” mode, heat is flowing from the heated heneicosane molecules to the cooled ones through the graphene layers and in the...

Université de Fribourg

Biogeography and phylogenetic relationships of Hyrcanian wild apple using cpDNA and ITS noncoding sequences

Yousefzadeh, Hamed ; Khodadost, Ali ; Abdollahi, Hamid ; Ali, Syed Shujait ; Kozlowski, Gregor ; Bina, Hamid

In: Systematics and Biodiversity, 2019, vol. 17, no. 3, p. 295–307

The Hyrcanian forest of northern Iran is considered one of the potential centres for the evolution and domestication of the genus Malus (Rosaceae). However, the biogeography, phylogenetic position, and taxonomic status of the Hyrcanian wild apples have never been evaluated. In our study, the nucleotide sequences of the internal transcribed spacer (ITS) and the trnH-psbA intergenic spacer...

Université de Fribourg

Nonequilibrium solid-solid phase transition in a lattice of liquid jets

Croccolo, Fabrizio ; Castellini, Stefano ; Scheffold, Frank ; Vailati, Alberto

In: Physical Review E, 2018, vol. 98, no. 6, p. 063104

Solid-solid phase transitions are commonly encountered at the atomic scale in alloys and in superatomic mesoscopic systems of colloidal particles. Here we investigate a solid-solid phase transition occurring at the macroscopic scale between lattices of liquid jets with different symmetries generated by convection in a horizontal layer of a binary liquid mixture. In the absence of a shear...