Electrophoretic Mobility and the Isoelectric Coagulation of the Silver Iodide Sols and Suspensions*

Electrophoretic mobility was measured on sols and suspensions of AgI aged for 4 hours and for 4 days at 6.5 > pAg > 2.8. The electrophoretic zero - point and the electrophoretic mobility were found to be independent of the concentration of AgI in which the sols and suspensions were prepared in the region between 10- 4 and 10-3 M AgI

Electrophoretic Mobility and the Isoelectric Coagulation of the Silver Iodide Sols and Suspensions*

Electrophoretic mobility was measured on sols and suspensions of AgI aged for 4 hours and for 4 days at 6.5 > pAg > 2.8. The electrophoretic zero - point and the electrophoretic mobility were found to be independent of the concentration of AgI in which the sols and suspensions were prepared in the region between 10- 4 and 10-3 M AgI

Habitat quality, configuration and context effects on roe deer fecundity across a forested landscape mosaic

Effective landscape-scale management of source-sink deer populations will be strengthened by understanding whether local variation in habitat quality drives heterogeneity in productivity. We related female roe deer Capreolus capreolus fecundity and body mass to habitat composition and landscape context, separately for adults and yearlings, using multi-model inference (MMI) applied to a large sample of individuals (yearlings: fecundity=202, body mass=395; adults: fecundity=908, body mass=1669) culled during 2002-2015 from an extensive (195 km2) heterogeneous forest landscape. Adults were heavier (inter-quartile, IQ, effect size=+0.5kg) when culled in buffers comprising more arable lands while contrary to our prediction no effects on body mass of grassland, young forest or access to vegetation on calcareous soil were found. Heavier adults were more fertile (IQ effect size, +12% probability of having two embryos instead of one or zero). Counter-intuitively, adults with greater access to arable lands were less fecund (IQ effect of arable: -7% probability of having two embryos, instead of one or zero), and even accounting for greater body mass of adults with access to arable, their modelled fecundity was similar to or lower than that of adults in the forest interior. In contrast, effects of grassland, young forest and calcareous soil did not receive support. Yearling body mass had an effect on fecundity twice that found in adults (+23% probability of having one additional embryo), but yearling body mass and fecundity were not affected by any candidate habitat or landscape variables. Effect of arable lands on body mass and fecundity were small, with little variance explained (Coefficient of Variation of predicted fecundity across forest sub-regions=0.03 for adults). More variance in fecundity was attributed to other differences between forest management sub-regions (modelled as random effects), suggesting other factors might be important. When analysing source-sink population dynamics to support management, an average value of fecundity can be appropriate across a heterogeneous forest landscape

Influence of soil amended with zeolite and/or mineral N on agronomic performance and soil mineral N dynamics in a soybean–winter triticale crop rotation field experiment

Although there are numerous studies describing the positive infuence of legumes as cereal pre-crops, little information exists on the specifc crop rotation soybean–triticale. Besides that, fertilization of soybean is very complex due to its symbiosis with rhizobia where mineral nitrogen could have negative efect, therefore new soil conditioners, e.g. zeolite, need to be examined. An investigation in growing seasons 2017 and 2017/2018 was established to study these knowledge gaps in a combined feld experiment, where soil mineral nitrogen (SMN) was also monitored. Firstly, the infuence of soybean seed bacterial inoculation (inoculated and non-inoculated seeds) as factor 1, and four fertilization treatments (1—no fertilizer, 2—600 kg zeolite/ha, 3—30 kg mineral N/ha (at sowing)+additional 70–90 kg/ha of mineral N, and 4—combination of treatments 2 and 3) as factor 2 on soybean yield performance and nutritional composition was evaluated. Neither factor infuenced soybean seed yield (average 3128 kg/ha). However, zeolite had favourable efect on root nodulation where the number of nodules and nodule dry mass per plant were signifcantly increased. Secondly, winter triticale was sown after soybean harvest on the same plots. Only 40 kg N was applied at BBCH 30 (beginning of stem elongation) to the whole experiment. Interaction of soybean experimental factors signifcantly infuenced the triticale grain yield. Finally, regression analysis revealed that triticale grain yield (average 5537 kg/ha) was highly dependent (R2=0.927) on initial SMN content, left after soybean harvest

Magnetic vortex nucleation modes in static magnetic fields

The magnetic vortex nucleation process in nanometer- and micrometer-sized magnetic disks undergoes several phases with distinct spin configurations called the nucleation states. Before formation of the final vortex state, small submicron disks typically proceed through the so-called C-state while the larger micron-sized disks proceed through the more complicated vortex-pair state or the buckling state. This work classifies the nucleation states using micromagnetic simulations and provides evidence for the stability of vortex-pair and buckling states in static magnetic fields using magnetic imaging techniques and electrical transport measurements. Lorentz Transmission Electron Microscopy and Magnetic Transmission X-ray Microscopy are employed to reveal the details of spin configuration in each of the nucleation states. We further show that it is possible to unambiguously identify these states by electrical measurements via the anisotropic magnetoresistance effect. Combination of the electrical transport and magnetic imaging techniques confirms stability of a vortex-antivortex-vortex spin configuration which emerges from the buckling state in static magnetic fields

Magnetic vortex nucleation modes in static magnetic fields

The magnetic vortex nucleation process in nanometer- and micrometer-sized magnetic disks undergoes several phases with distinct spin configurations called the nucleation states. Before formation of the final vortex state, small submicron disks typically proceed through the so-called C-state while the larger micron-sized disks proceed through the more complicated vortex-pair state or the buckling state. This work classifies the nucleation states using micromagnetic simulations and provides evidence for the stability of vortex-pair and buckling states in static magnetic fields using magnetic imaging techniques and electrical transport measurements. Lorentz Transmission Electron Microscopy and Magnetic Transmission X-ray Microscopy are employed to reveal the details of spin configuration in each of the nucleation states. We further show that it is possible to unambiguously identify these states by electrical measurements via the anisotropic magnetoresistance effect. Combination of the electrical transport and magnetic imaging techniques confirms stability of a vortex-antivortex-vortex spin configuration which emerges from the buckling state in static magnetic fields