Pdms-based ligands for quantum dots in silicones

The invention provides a process for the production of a light converter comprising a siloxane polymer matrix with light converter nano particles embedded therein, the process comprising (a) mixing (i) light converter nano particles having an outer surface grafted with grafting ligands and (ii) curable siloxane polymers, and (b) curing the curable siloxane polymers, thereby producing the light converter; wherein the grafting ligands comprise siloxane grafting ligands having x1 Si backbone elements, wherein at least one Si backbone element of each siloxane grafting ligand comprises a side group having a grafting functionality; wherein the curable siloxane polymers have y1 Si backbone elements; and wherein x1 is at least 20, wherein y1 is at least 2, and wherein x1/y1≥0.8.</p

Historiae Oculus Geographia

La comparaison des toponymes qui apparaissent sur une petite sélection de cartes, datées de 1600 à 1858, représentant la partie occidentale du Ghana contemporain sert de base à la présente recherche. Celle-ci montre dans quelle mesure ces cartes reflétaient, en leur temps, l’histoire de cette région, tout en donnant parfois des informations qui n’existent pas dans les relations de voyage contemporaines.Dans l’ensemble, les changements politiques dans la zone côtière étaient assez promptement signalés et de manière précise. Les informations concernant les évolutions dans l’arrière-pays étaient quant à elles transmises aux Européens sur la Côte par une chaîne de messagers et de marchands, ce qui avait pour résultat de rendre souvent inexacte et confuse la localisation de ces territoires et lieux. De plus, en Europe, les dessinateurs de cartes se copiaient les uns les autres et n’avaient ordinairement pas une connaissance directe de la terre africaine.This article investigates the extent to which old maps reflect the history of their time. It is based on a comparison of toponyms occuring on a small collection of maps of the western part of present-day Ghana, produced from about 1600 to 1858. The study shows that political changes in the coastal area are rendered rather quickly and accurately. Reports on events happening in the interior, however, reached the Europeans on the coast through a chain of inland messengers and merchants, resulting in an unsteady and confused representation of these territories and places. Moreover, in Europe, draughtsmen copied each other and had ordinarily no direct experience of the African terrain

Historiae Oculus Geographia

La comparaison des toponymes qui apparaissent sur une petite sélection de cartes, datées de 1600 à 1858, représentant la partie occidentale du Ghana contemporain sert de base à la présente recherche. Celle-ci montre dans quelle mesure ces cartes reflétaient, en leur temps, l’histoire de cette région, tout en donnant parfois des informations qui n’existent pas dans les relations de voyage contemporaines.Dans l’ensemble, les changements politiques dans la zone côtière étaient assez promptement signalés et de manière précise. Les informations concernant les évolutions dans l’arrière-pays étaient quant à elles transmises aux Européens sur la Côte par une chaîne de messagers et de marchands, ce qui avait pour résultat de rendre souvent inexacte et confuse la localisation de ces territoires et lieux. De plus, en Europe, les dessinateurs de cartes se copiaient les uns les autres et n’avaient ordinairement pas une connaissance directe de la terre africaine.This article investigates the extent to which old maps reflect the history of their time. It is based on a comparison of toponyms occuring on a small collection of maps of the western part of present-day Ghana, produced from about 1600 to 1858. The study shows that political changes in the coastal area are rendered rather quickly and accurately. Reports on events happening in the interior, however, reached the Europeans on the coast through a chain of inland messengers and merchants, resulting in an unsteady and confused representation of these territories and places. Moreover, in Europe, draughtsmen copied each other and had ordinarily no direct experience of the African terrain

Genomic Signatures of Domestication Selection in the Australasian Snapper (Chrysophrys auratus)

Domestication of teleost fish is a recent development, and in most cases started less than 50 years ago. Shedding light on the genomic changes in key economic traits during the domestication process can provide crucial insights into the evolutionary processes involved and help inform selective breeding programmes. Here we report on the recent domestication of a native marine teleost species in New Zealand, the Australasian snapper (Chrysophrys auratus). Specifically, we use genome-wide data from a three-generation pedigree of this species to uncover genetic signatures of domestication selection for growth. Genotyping-By-Sequencing (GBS) was used to generate genome-wide SNP data from a three-generation pedigree to calculate generation-wide averages of FST between every generation pair. The level of differentiation between generations was further investigated using ADMIXTURE analysis and Principal Component Analysis (PCA). After that, genome scans using Bayescan, LFMM and XP-EHH were applied to identify SNP variants under putative selection following selection for growth. Finally, genes near candidate SNP variants were annotated to gain functional insights. Analysis showed that between generations FST values slightly increased as generational time increased. The extent of these changes was small, and both ADMIXTURE analysis and PCA were unable to form clear clusters. Genome scans revealed a number of SNP outliers, indicative of selection, of which a small number overlapped across analyses methods and populations. Genes of interest within proximity of putative selective SNPs were related to biological functions, and revealed an association with growth, immunity, neural development and behaviour, and tumour repression. Even though few genes overlapped between outlier SNP methods, gene functionalities showed greater overlap between methods. While the genetic changes observed were small in most cases, a number of outlier SNPs could be identified, of which some were found by more than one method. Multiple outlier SNPs appeared to be predominately linked to gene functionalities that modulate growth and survival. Ultimately, the results help to shed light on the genomic changes occurring during the early stages of domestication selection in teleost fish species such as snapper, and will provide useful candidates for the ongoing selective breeding in the future of this and related species