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3,484 results for “Plastics”
Figure 1: Spreadability (plasticity) Figure-STUDIES TOWARDS OBTAINING A PHOTOPROTECTIVE DERMO-COSMETIC COMPLEX PRODUCT WITH NATURAL EXTRACTS OF INORGANIC AND ORGANIC SUBSTANCES
<p>The physical and chemical methods used to characterize the row<br> materials and the ¯nal products are as following:<br> ² to ¯nd out the amount of inorganic substances (with screening role) the<br> samples were incinerated for two hours at 800±C;<br> ² the quantity of organic substance (with the UV ¯ltering role) was deter-<br> mined by an UV-VIS spectrophotometric method;<br> ² vitamins identi¯cation was done according to the European Pharma-<br> copoeia VI-th edition;<br> ² the photoprotective ability was tested by applying a standard amount of<br> emulsion on a synthetic skin device (0,2g=cm2);<br> ² to test the microbial stability were applied the European Pharmacopoeia<br> VI-th edition stipulations;<br> ² to estimate the compatibility with the human skin a standard quantity<br> of sample (0,2g=cm2) was laid under an occlusive patch.</p>
Influence of statistical size effects on the plastic deformation of coronary stents: Supporting data
<p>Data including UMATs and Abaqus input files related to the paper 'Influence of statistical size effects on the plastic deformation of coronary stents' <a title="Persistent link using digital object identifier" href="https://doi.org/10.1016/j.jmbbm.2012.12.008" target="_blank" rel="noreferrer noopener"><span>https://doi.org/10.1016/j.jmbbm.2012.12.008</span></a></p>
Workshop on Plastics
<p>Online Workshop on Plastics: Think Global, Think Circular, Re-Think End-of-Life!</p> <p>Presentations by:</p> <ul> <li>Gert-Jan Gruter, University of Amsterdam and Avantium BV</li> <li>Nuno Aguiar, Portuguese Plastic Industry Association (APIP)</li> <li>Mark Foreman, Chalmers University of Technology, Gothenburg, Sweden</li> <li>Milena Parnigoni, Ecoiberia Reciclados Ibéricos SA, Portugal</li> </ul> <p>Date: 24th September 2020</p> <p> </p>
Can developmental plasticity shape sexual competition and promote reproductive isolation?
<p>Environmental factors such as dietary nutrients can shape the expression of developmentally plastic sexual traits in many species. However, while there has been extensive research into the developmental plasticity of sexual traits at the individual level, the broader consequences of this variation at the population scale remain poorly understood. Here, we asked whether plastic responses to the developmental environment can shape sexual competition and initiate reproductive isolation between populations. We reared neriid flies, <em>Telostylinus angusticollis</em>,<em> </em>on nutrient-rich and nutrient-poor larval diets, generating adult flies that differed in body size and secondary sexual trait expression. We then investigated sexual competition in experimental populations from each developmental environment, and tested for reproductive isolation between flies from mismatched environments. We found that, compared with poor-diet populations, rich-diet populations exhibited more frequent and escalated male-male combat and more frequent mating and mate-guarding. However, we found no evidence that sexual selection was affected by the developmental environment. Mismatched female-male pairs tended to take longer to mate and rich-diet females often rejected poor-diet males, but mismatched pairs were not less likely to mate within 1 hour or produce viable offspring. Our findings suggest that developmental plasticity could generate dramatic differences in sexual competition between populations, and could contribute to reproductive isolation.</p>
Figure 1 in Evaluation of Plastic Shipping Bags for Hypothenemus hampei (Ferrari) (Coleoptera: Curculionidae) Containment
Figure 1. Diagram of Hypothenemus hampei (Ferrari) shipping bag observation arenas used in this experiment. Arenas were constructed of lidded 3.78 L (1-gal) glass jars with drying treated coffee in one of nine bag treatments suspended from the top by a hot-glued string tether to allow escaping (left) or not escaping (right) H. hampei observation in the bottom of the jar.
A theoretical framework for learning through structural plasticity
<p>This dataset contains the data and scripts used for the preprint:</p> <div> <div><span>Tiddia, G., Sergi, L., & Golosio, B.</span> <span>(</span><span>2023</span><span>)</span><span>.</span> <span>A theoretical framework for learning through structural plasticity</span><span>.</span> <span><em>ArXiv</em></span><span>. DOI:</span> <a href="https://doi.org/10.48550/arXiv.2307.11735" rel="nofollow">https://doi.org/10.48550/arXiv.2307.11735</a></div> </div> <p>The dataset contains a README file with all the instructions for compiling and running the model. </p> <p> </p>
Data from: Higher thermal plasticity in flowering phenology increases flowering output
<p>Ongoing climate change poses an increasing threat to biodiversity. To avoid decline or extinction, species need to either adjust or adapt to new environmental conditions or track their climatic niches across space. In sessile organisms such as plants, phenotypic plasticity can help maintain fitness in variable and even novel environmental conditions and is therefore likely to play an important role in allowing them to survive climate change, particularly in the short term. Understanding a species' response to rising temperature is crucial for planning well-targeted and cost-effective conservation measures. We sampled seeds of three <em>Hypericum</em> species (<em>H. maculatum</em>, <em>H. montanum</em>, and <em>H. perforatum</em>), from a total of 23 populations originating from different parts of their native distribution areas in Europe. We grew them under four different temperature regimes in a greenhouse to simulate current and predicted future climatic conditions in the distribution areas. We measured flowering start, flower count, and subsequent seed weight, allowing us to study variations in the thermal plasticity of flowering phenology and its relation to fitness. Our results show that individuals flowered earlier with increasing temperature, while the degree of phenological plasticity varied among species. More specifically, the plasticity of <em>H. maculatum</em> varied depending on population origin, with individuals from the leading range edge being less plastic. Importantly, we show a positive relationship between higher plasticity and increased flower production, indicating adaptive phenological plasticity. The observed connection between plasticity and fitness supports the idea that plasticity itself may be adaptive. This study underlines the need for information on plasticity for predicting species' potential to thrive under global change and the need for studies on whether higher phenotypic plasticity is currently being selected for as natural populations experience a rapidly changing climate.</p>
Uncovering structural plasticity of Enterovirus A through deep insertional and deletional scanning
<p>Insertions and deletions (InDels) are essential sources of novelty in protein evolution. In RNA viruses, InDels cause dramatic phenotypic changes that contribute to the emergence of viruses with altered immune profiles and host engagement. This work aims to comprehensively quantify the mutational tolerance of an RNA virus to insertion, deletion, and substitution. Using Enterovirus A71 (EV-A71) as a prototype for the Enterovirus A species (EV-A) of picornaviruses, we engineered approximately 45,000 insertions, 6,000 deletions, and 41,000 amino acid changes across the 2,193 coding positions of the EV-A71 proteome, quantifying their effects on viral fitness and comprehensively mapping evolutionary constraint across the viral proteome. In contrast with amino acid changes, the vast majority of InDels are lethal to virus growth. Most that are tolerated reside at a few hotspot regions. These tolerant sites highlight structurally flexible and mutationally plastic regions of EV-A71 proteins that avoid core structural and functional elements, but often overlap with key sites of host- and immune recognition, suggesting a complex evolutionary role for InDels and substitutions at these sites. Phylogenetic analysis examining EV-A species isolated from diverse mammalian hosts reveals that many of the experimentally identified hotspots also correspond to sites of natural InDel diversity across the more diverse EV-A species, suggesting these hotspots of mutational tolerance in EV-A genomes may have contributed to past phenotypic diversification of EV-A. Insights from this and future mutational scanning studies mapping viral evolutionary potential will inform better epidemiological monitoring and Enterovirus vaccine development.</p>
Data for: Plasticity in mosquito size and thermal tolerance across a latitudinal climate gradient
<p>Variations in heat tolerance among populations can determine whether a species can cope with ongoing climate change. Such variation may be especially important for ectotherms whose body temperatures, and consequently, physiological processes, are regulated by external conditions. Additionally, differences in body size are often associated with latitudinal clines, thought to be driven by climate gradients. While studies have begun to explore variation in body size and heat tolerance within species, our understanding of these patterns across large spatial scales, particularly regarding the roles of plasticity and genetic differences, remains incomplete. Here, we examine body size, as measured by wing length, and thermal tolerance, as measured by the time to immobilization at high temperatures ("thermal knockdown"), in populations of the mosquito <em>Aedes sierrensis</em> collected from across a large latitudinal climate gradient spanning 1300 km (34-44 °N). We find that mosquitoes collected from lower latitudes and warmer climates were more tolerant of high temperatures than those collected from higher latitudes and colder climates. Moreover, body size increased with latitude and decreased with temperature, a pattern consistent with James' rule, which appears to be a result of plasticity rather than genetic variation. Our results suggest that warmer environments produce smaller and more thermally tolerant populations.</p>
Fig. 3 in Evaluation Of Teratogenic Activity Of The Smoke Of Burning Combustible Plastic Influencing The Drosophila Melanogaster
Fig. 3. Amount of abdominal tergite anomalies in wild type Drosophila melanogaster depending on the dose of burning plastic (polysterene) smoke and larvae age (hours after eggs are laid)
Fig. 4 in Evaluation Of Teratogenic Activity Of The Smoke Of Burning Combustible Plastic Influencing The Drosophila Melanogaster
Fig. 4. Amount of abdominal tergite anomalies in wild type Drosophila melanogaster depending on the dose of burning plastic (polysterene) smoke and pupae age (hours after eggs are laid)
Fig. 9 in Evaluation Of Teratogenic Activity Of The Smoke Of Burning Combustible Plastic Influencing The Drosophila Melanogaster
Fig. 9. Abdominal tergite anomalies in wild type Drosophila melanogaster in the result of treating pupae with the smoke of burning polysterene; 1 – females, 2 – males
Fig. 2 in Evaluation Of Teratogenic Activity Of The Smoke Of Burning Combustible Plastic Influencing The Drosophila Melanogaster
Fig. 2. Amount of abdominal tergite anomalies in wild type Drosophila melanogaster depending on the dose of burning plastic (polyethyleneterephtalane) smoke and pupae age (hours after eggs are laid)
Fig. 1 in Evaluation Of Teratogenic Activity Of The Smoke Of Burning Combustible Plastic Influencing The Drosophila Melanogaster
Fig. 1. Amount of abdominal tergite anomalies in wild type Drosophila melanogaster depending on the dose of burning plastic (polyethyleneterephtalane) smoke and larvae age (hours after eggs are laid)
Figure 6 in Far from urban areas: plastic uptake in fish populations of subtropical headwater streams
Figure 6. Median plastic particle distribution in fishes per sample site (whiskers = min - max values, dots = outliers, stars = extreme outliers, horizontal line = median, box = 50% tile).
Figure 3 in Far from urban areas: plastic uptake in fish populations of subtropical headwater streams
Figure 3. Plastic particles abundances in benthic and water column feeders (whiskers = min - max values, dots outliers, stars extreme outliers, horizontal line median, box 50% tile).
Figure 1. Study area. A. South America and Brazil. B in Far from urban areas: plastic uptake in fish populations of subtropical headwater streams
Figure 1. Study area. A. South America and Brazil. B. Brazil and the state of Rio Grande do Sul. C. Rio Grande do Sul and the Sinos River Basin. D. The numbers from 1 to 7 in the white dots show the sampling sites in the upper section of the Sinos River basin. The colour gradient represents the terrain elevation (light green elevations of 30m altitude and dark brown elevations of 980m). The red polygons are the urban areas.
Figure 5 in Far from urban areas: plastic uptake in fish populations of subtropical headwater streams
Figure 5. Total abundances of food items per category in comparison with ingested plastic particles abundances. (Pla=Pastics, Dip=Diptera, Hem=Hemiptera, Tri=Tricoptera, Lep=Lepidoptera, Eph=Ephemeroptera, Ple=Plecoptera, Col=Coleoptera, Gas=Gastropoda, Odo=Odonata, Veg= Plant).
Data from: A reaction norm for flowering time plasticity reveals physiological footprints of maize adaptation
<div> <p>Understanding how plant phenotypes are shaped by their environments is crucial for addressing questions about crop adaptation to new environments. This study investigated the interplay between developmental responses to temperature fluctuations and photoperiod perception in maize that contribute to genotype-by-environment variation in flowering time. We present a physiological reaction norm for flowering time plasticity (PRN-FTP) for studying large collections of genotypes tested in multi-environment trial (MET) networks. Using a new variable for computational envirotyping of sensed photoperiod, it was found that, at high latitudes, different genotypes in the same environment can experience hours-long differences in photoperiod. This emphasizes the importance of considering genotype-specific differences in the experienced environment when investigating plasticity. A statistical framework is introduced for modeling the PRN-FTP as a non-linear response function, with parameters putatively linked to different regulatory modules for flowering time. Applying the PRN-FTP to a sample of global breeding material for maize showed that tropical and temperate maize occupy distinct territories of the trait space for PRN-FTP parameters, supporting that the geographical spread and adaptation of maize was differentially mediated by exogenous and endogenous pathways for flowering time regulation. Our results have implications for understanding crop adaptation and for future crop improvement efforts.</p> </div>
Figure 9 in The life cycle in late Paleozoic eryopid temnospondyls: developmental variation, plasticity and phylogeny
Figure 9. Phylogenetic relationships within Eryopidae as found in the present analysis, with the most important synapomorphies mapped onto nodes. See Appendix A for character definitions and a matrix, and see the text for a complete list of results.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.