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Littérature scientifique sur le sujet « Responsive colors »

Auteur : Grafiati
Publié le 27 avril 2023

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Articles de revues sur le sujet "Responsive colors"

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Kredel, Julia, et Markus Gallei. « Compression-Responsive Photonic Crystals Based on Fluorine-Containing Polymers ». Polymers 11, no 12 (16 décembre 2019) : 2114. http://dx.doi.org/10.3390/polym11122114.

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Fluoropolymers represent a unique class of functional polymers due to their various interesting and important properties such as thermal stability, resistance toward chemicals, repellent behaviors, and their low refractive indices in comparison to other polymeric materials. Based on the latter optical property, fluoropolymers are particularly of interest for the preparation of photonic crystals for optical sensing application. Within the present study, photonic crystals were prepared based on core-interlayer-shell particles focusing on fluoropolymers. For particle assembly, the melt-shear organization technique was applied. The high order and refractive index contrast of the individual components of the colloidal crystal structure lead to remarkable reflection colors according to Bragg’s law of diffraction. Due to the special architecture of the particles, consisting of a soft core, a comparably hard interlayer, and again a soft shell, the resulting opal films were capable of changing their shape and domain sizes upon applied pressure, which was accompanied with a (reversible) change of the observed reflection colors as well. By the incorporation of adjustable amounts of UV cross-linking agents into the opal film and subsequent treatment with different UV irradiation times, stable and pressure-sensitive opal films were obtained. It is shown that the present strategy led to (i) pressure-sensitive opal films featuring reversibly switchable reflection colors and (ii) that opal films can be prepared, for which the written pattern—resulting from the compressed particles—could be fixed upon subsequent irradiation with UV light. The herein described novel fluoropolymer-containing photonic crystals, with their pressure-tunable reflection color, are promising candidates in the field of sensing devices and as potential candidates for anti-counterfeiting materials.
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Jeon, Seongsin. « Presence Responsive to Colors in Abstract Moving Images ». TECHART : Journal of Arts and Imaging Science 1, no 4 (30 novembre 2014) : 7. http://dx.doi.org/10.15323/techart.2014.11.1.4.7.

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Kim, Yejin, Seo Hyun Kim, Henok Getachew Girma, Seungju Jeon, Bogyu Lim et Seo-Hyun Jung. « Dual Responsive Dependent Background Color Based on Thermochromic 1D Photonic Crystal Multilayer Films ». Polymers 14, no 23 (6 décembre 2022) : 5330. http://dx.doi.org/10.3390/polym14235330.

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In this paper, we present dual responsive one-dimensional (1D) photonic crystal (PC) multilayer films that utilize a high-humidity environment and temperature. Dual responsive 1D PC multilayer films are fabricated on precoated thermochromic film by sequential alternate layer deposition of photo-crosslinkable poly(2-vinylnaphthalene-co-benzophenone acrylate) (P(2VN-co-BPA)) as a high refractive index polymer, and poly(4-vinylpyrollidone-co-benzophenone acrylate) P(4VP-co-BPA) as a low refractive index polymer. The thermochromic film shows a vivid color transition from black to white at 28 °C. Three different colors of thermochromic 1D PC multilayer films are prepared by thickness modulation of P(4VP-co-BPA) layers, and the films on a black background exhibit visible spectrum color only in a high-humidity environment (over 90% relative humidity (RH)). For the three films placed on a hands display, three different composite colors are synthesized by the reflection of light, including yellow, magenta, and cyan, due to the changing of backgrounds from black to white with temperature. Additionally, the films show remarkable color transitions with reliable reversibility. The films can be applied as anti-counterfeiting labels and can be used for smart decoration films. To the best of our knowledge, this is the first report of dual response colorimetric films that change color in various ways depending on temperature and humidity changes, and we believe that it can be applied to various applications.
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Kobayashi, Ryosuke, Takashi Yumura, Hiroaki Imoto et Kensuke Naka. « Homo- and hetero-metallophilicity-driven synthesis of highly emissive and stimuli-responsive Au(i)–Cu(i) double salts ». Chemical Communications 57, no 44 (2021) : 5382–85. http://dx.doi.org/10.1039/d1cc01316e.

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Discrete complex salts having Au···Au and Au···Cu interactions were obtained as three crystalline polymorphs exhibiting various emission colors with high efficiency. Solvent vapor caused crystal-to-crystal transition, changing the emission color.
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Mohd-Noor, Syazwani, Hansol Jang, Kyungnae Baek, Yi-Rong Pei, Al-Mahmnur Alam, Yong Hwan Kim, In Soo Kim, Jin-Ho Choy et Jerome K. Hyun. « Ultrafast humidity-responsive structural colors from disordered nanoporous titania microspheres ». Journal of Materials Chemistry A 7, no 17 (2019) : 10561–71. http://dx.doi.org/10.1039/c9ta01394f.

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Ultrafast and reversible colorimetric responses to humidity changes are observed with disordered, nanoporous titania microspheres, optimized in speed and intensity with a monolayer coverage. The response times, defined by intracrystalline diffusion of water molecules, represent the fastest values for colorimetric humidity sensors.
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Qi, Yong, Shufen Zhang et An-Hui Lu. « Responsive Structural Colors Derived from Geometrical Deformation of Synthetic Nanomaterials ». Small Structures 3, no 11 (novembre 2022) : 2270034. http://dx.doi.org/10.1002/sstr.202270034.

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Isoda, Kyosuke. « Acid-Responsive N -Heteroacene-Based Material Showing Multi-Emission Colors ». ChemistryOpen 6, no 2 (22 février 2017) : 242–46. http://dx.doi.org/10.1002/open.201700007.

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Wang, Huan, Lijun Cai, Dagan Zhang, Luoran Shang et Yuanjin Zhao. « Responsive Janus Structural Color Hydrogel Micromotors for Label-Free Multiplex Assays ». Research 2021 (20 novembre 2021) : 1–9. http://dx.doi.org/10.34133/2021/9829068.

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Micromotors with self-propelling ability demonstrate great values in highly sensitive analysis. Developing novel micromotors to achieve label-free multiplex assay is particularly intriguing in terms of detection efficiency. Herein, structural color micromotors (SCMs) were developed and employed for this purpose. The SCMs were derived from phase separation of droplet templates and exhibited a Janus structure with two distinct sections, including one with structural colors and the other providing catalytic self-propelling functions. Besides, the SCMs were functionalized with ion-responsive aptamers, through which the interaction between the ions and aptamers resulted in the shift of the intrinsic color of the SCMs. It was demonstrated that the SCMs could realize multiplex label-free detection of ions based on their optical coding capacity and responsive behaviors. Moreover, the detection sensitivity was greatly improved benefiting from the autonomous motion of the SCMs which enhanced the ion-aptamer interactions. We anticipate that the SCMs can significantly promote the development of multiplex assay and biomedical fields.
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Teshima, Midori, Takahiro Seki et Yukikazu Takeoka. « Simple preparation of magnetic field-responsive structural colored Janus particles ». Chemical Communications 54, no 21 (2018) : 2607–10. http://dx.doi.org/10.1039/c7cc09464g.

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We established a simple method for preparing Janus particles displaying different structural colors using submicron-sized fine silica particles and magnetic nanoparticles composed of Fe3O4.
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Jia, Lizhen, Miaomiao Li, Lixin Jiang, Haoqiang Gao, Haiying Tan, Bolun Peng, Jiangping Xu, Lianbin Zhang et Jintao Zhu. « Revealable photonic prints with oppositely responsive polymers for improved visual sensing ». Journal of Materials Chemistry C 8, no 27 (2020) : 9286–92. http://dx.doi.org/10.1039/d0tc02033h.

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Revealable photonic prints are achieved by patterning photonic hydrogels with two oppositely pH responsive polymers. The shifting of colors in the patterned and background regions in the opposite directions improves the visibility for pH-sensing.
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Thèses sur le sujet "Responsive colors"

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Benoot, Nicolas. « Self-assembly of hybrid microgels for interferential and responsive photonic applications ». Electronic Thesis or Diss., Pau, 2020. http://www.theses.fr/2020PAUU3047.

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Dans le milieu des produits cosmétiques et de soins pour la peau, il existe un réel besoin d’innovation pour trouver de nouveaux matériaux sans impact sur le consommateur et l’environnement. Dans une démarche bio-inspirée, les couleurs dites « physiques » offrent une nouvelle voie de création de couleurs sans pigments inorganiques. En effet, aujourd’hui les pigments minéraux sont la principale source de coloration pour les applications cosmétiques et leur remplacement représente un enjeu critique pour limiter une éventuelle exposition à de potentielles nanoparticules.Sensible à cet enjeu, LVMH Recherche s’est investi avec l’IPREM pour concevoir une solution issue de l’auto-assemblage de micro-hydrogels, dits microgels, aux multiples propriétés stimulables, pour produire de la couleur sans pigments.Ces microgels, dispersés dans l’eau, ont la capacité de s’organiser spontanément lors de l’évaporation du solvant pour produire des assemblages très réguliers. Ces assemblages périodiques, assimilés à des « cristaux colloïdaux » interfère avec la lumière visible et peuvent conduire à des phénomènes de diffraction. La diffraction de la lumière visible par les cristaux colloïdaux entraine une coloration dite « physique ».Les travaux de ce projet de thèse s’intéressent à la conception de microgels hybrides pour exalter ses propriétés photoniques et aboutir à la formation de films après séchage dont les couleurs puissent être modifiées par un stimulus. Le manuscrit présente d’abord le contexte scientifique dans lequel s’inscrivent ces travaux avant d’aborder la démarche de synthèse entreprise. Dans un second temps, les propriétés photoniques et stimulables sont discutées en lien avec les organisations 3D des microgels au sein du film. Pour finir, les efforts pour transposer cette technologie dans une formulation cosmétique sont présentés
In the world of cosmetics and skin care products, there is a real need for innovation to find new materials with no impact on the consumer and the environment. In a bio-inspired approach, so-called "physical" colors offer a new way of creating colors without inorganic pigments. Indeed, today mineral pigments are the main source of coloring for cosmetic applications and their replacement represents a critical issue to limit possible exposure to potential nanoparticles.Sensitive to this challenge, LVMH Research worked with IPREM to design a solution resulting from the self-assembly of micro-hydrogels, known as microgels, with multiple stimulable properties, to produce color without pigments.These microgels, dispersed in water, have the capacity to spontaneously organize themselves during the evaporation of the solvent to produce very regular assemblies. These periodic assemblages, assimilated to "colloidal crystals", interfere with visible light and can lead to diffraction phenomena. The diffraction of visible light by the colloidal crystals leads to a so-called "physical" coloration.The work of this thesis project focuses on the design of hybrid microgels to enhance its photonic properties and lead to the formation of films after drying whose colors can be modified by a stimulus. The manuscript first presents the scientific context in which this work is carried out before discussing the synthesis process undertaken. In a second step, the photonic and stimulable properties are discussed in relation to the 3D organization of microgels within the film. Finally, efforts to transpose this technology into a cosmetic formulation are presented
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Waters, Hayley A. « Influence of color attributes, context, and individual differences on affective responses to wall colors ». Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/29576.

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Francis, Christine M. « The Impact of a "Response to Intervention" Initiative on Teachers' Efficacy with Students of Color in a Voluntary Desegregation Program ». Thesis, Boston College, 2009. http://hdl.handle.net/2345/715.

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Thesis advisor: Elizabeth A. Twomey
Thesis advisor: James Marini
This qualitative case study focused on a Response to Intervention (RTI) literacy initiative in a suburban elementary school near an urban area in New England. The initiative incorporated professional development about RTI and implementation of components of an RTI model. The participant-researcher analyzed teachers' feedback regarding the professional development and the RTI model, as the initiative developed, with a specific focus on the teachers' perceptions about the impact of the initiative on the school's capacity to effectively instruct urban students of color who are participants in a voluntary desegregation program. The professional development about RTI incorporated three features which are recommended for professional learning communities: content which is research-based, process which includes reflection and dialogue, and context which is job-embedded. The RTI model utilized the "problem-solving" approach, and incorporated progress-monitoring and interventions. The findings from the study indicated that the combination of three elements (sustained professional development about RTI, implementation of RTI in the school setting, and conversations and questions about addressing the needs of urban students of color) resulted in increased teacher confidence in their ability to provide effective instruction to this population of students. Further, the interaction of these three elements resulted in identification of next steps which the teachers believe will specifically address these students' needs. However, several teachers questioned whether RTI was adequate to address the complex issues of students of color in a voluntary desegregation program. They recognized that they needed more information about effective instructional strategies to match the learning profiles of this population of students. Combining the results of this case study with the recommendations of the professional literature about culturally responsive teaching, it appears that Response to Intervention has the potential to address the learning needs of urban students of color, but only if practitioners incorporate some basic principles of culturally responsive teaching. Integrating the results of this study with the professional literature about Response to Intervention, culturally responsive teaching, and effective professional development, the participant-researcher recommends that policymakers and educators should consider incorporating culturally responsive teaching into their RTI models in order to truly make RTI effective for addressing the achievement gap. Further, the researcher recommends that schools should provide sustained professional development (with content based upon research, process which includes reflection and dialogue, and context which is job-embedded) to increase teachers' understanding about Response to Intervention and about culturally responsive teaching
Thesis (EdD) — Boston College, 2009
Submitted to: Boston College. Lynch School of Education
Discipline: Educational Administration
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Crenshaw, Erik Daniel. « Stimuli Responsive Colorimetric Elastomers via Thiol-yne Chemistry ». University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1555580690422118.

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Hikade, Stribling Emily Elizabeth. « Light, Color and Texture : How the Physical Environment Can Aid the Treatment of Cancer ». University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1242835088.

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Hemphill, Brian D. « Light Emitting Diodes and a Monochrome Camera to Measure Chemical Optode Response ». Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1354890395.

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Busck, Gundersen Eline. « Making sense of response-dependence ». Thesis, St Andrews, 2007. http://hdl.handle.net/10023/211.

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Didion, Jeremy E. « Color Perception and Object Recognition in a Lake Malawian Cichlid Melanochromis Auratus ». Bowling Green State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1344885435.

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Sundlöf, Sebastian. « Light and Paint:perceptual and emotional effects on space and humans ». Thesis, KTH, Ljusdesign, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280082.

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In 21st century Scandinavia, the use of colored paint in the built environment has decreasedconsiderably. Instead, color changing LEDs can be found in many homes. In this thesis, an experimentwas set up to investigate how these two coloring methods differ and coincide with regards toemotional response and perception of materiality. Four cubicles, two painted and two colored bylight, were evaluated by ten participants. The painted cubicles were perceived as more material intheir appearance with regards to texture and color than their counterparts. A greater feeling ofnervousness, stress, and disorientation was felt in the light-colored cubicles as opposed to aheightened feeling of inspiration, excitement and calmness in the painted cubicles. Though it isimportant to remember the difference was not significant. In addition, preconceived connotations tothe color tone could be an influencing factor and so further studies on additional tones should beconducted. Lastly, benefits and drawbacks with the coloring methods were discussed.
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Benitez, Adiel Alexis. « Prised out of paradise : reconsidering cooperatives, in response to climate gentrification in Miami's communities of color ». Thesis, Massachusetts Institute of Technology, 2021. https://hdl.handle.net/1721.1/132761.

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Thesis: M. Arch., Massachusetts Institute of Technology, Department of Architecture, February, 2021
Cataloged from the official pdf thesis.
Includes bibliographical references (pages 310-319).
Our current global health crisis has clearly rendered how a lack of stable housing, access to care, and the effects of climate change, disproportionately affect our communities of color. Contemporary development patterns demonstrate the inadequacies of unchecked neoliberalism, and its adverse effect on the development of equitable housing. Within this context, Miami presents itself as a vulnerable coastal city exemplar. A growing city, Miami struggles with an endemic affordability crisis, and the long lasting scars of segregation, redlining, and urban renewal in its most vulnerable communities. Today, the city's muddled past has been compounded with its uncertain future. Despite palpable climate change, construction continues along the Miami waterfront, fueled by foreign investors who park capital in luxury real estate. For local residents, both low and mid income, the cost of living continues to rise along with sea levels. Miami, outwardly marketed as a tropical oasis, is now regarded as one of the country's most inequitable cities. This thesis takes issue with the commodification of housing, and its adverse effects on the vulnerable communities of greater Miami. While Miami's surplus of luxury real estate swells, climate change and speculative development have combined to threaten the stability of the city's multi-ethnic core. Instead, it re-considers the cooperative, and the collective ownership of housing, as a mechanism by which communities can reclaim agency within hostile markets, and open up access to stabilize housing in response to climate gentrification, as well as opening up access to other forms of social and financial capital. It works to re-contextualize the cooperative ownership of housing within the Miami context, considering its deployment as an architectural response who's programming and spatial organizations respond to both collective use and collective need.
by Adiel Alexis Benitez.
M. Arch.
M.Arch. Massachusetts Institute of Technology, Department of Architecture
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Livres sur le sujet "Responsive colors"

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Preparing teachers of color to teach : Culturally responsive teacher education in theory and practice. New York : Palgrave Macmillan, 2014.

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Tucker, Lannie G. Fractionated reaction time and movement time in response to a visual stimulus. Eugene : Microform Publications, College of Human Development and Performance, University of Oregon, 1985.

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Color, environment, and human response : An interdisciplinary understanding of color and its use as a beneficial element in the design of the architectural environment. New York : Van Nostrand Reinhold, 1996.

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NATO Advanced Research Workshop on Advances in Understanding Visual Processes : Convergence of Neurophysiological and Psychophysical Evidence (1990 Røros, Norway). From pigments to perception : Advances in understanding visual processes. New York : Plenum Press, 1991.

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Ceramics and the Spanish conquest : Response and continuity of indigenous pottery technology in central Mexico. Boston : Brill, 2012.

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1950-, Morstyn George, et Dexter T. Michael 1945-, dir. Filgrastim (r-metHuG-CSF) in clinical practice. New York : M. Dekker, 1994.

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Justice, United States Environmental Protection Agency Office of Environmental. A regulatory strategy for siting and operating waste transfer stations : A response to a recurring environmental justice circumstance : the siting of waste transfer stations in low-income communities and communities of color. Washington, DC : United States Environmental Protection Agency, 2000.

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Stroud, Barry. Unmasking and Dispositionalism. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198809753.003.0014.

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This chapter presents a response to Mark Johnston’s ‘Subjectivism and Unmasking’, which was directed at the author’s book, The Quest for Reality. Johnston defends an ontological account of what colours are and explains how, on that view, it could be true that no colours belong to the everyday objects we perceive in the world. The author’s resistance to the subjectivity of colour perceptions and beliefs turns rather on the proper understanding of colour terms as predicates ascribing colours to objects, and not as names or terms referring to the colours. The chapter explains the main assumptions of the ‘Ramsey/Lewis’ theory of colour. It also considers how the complex relations we understand to hold among the contents of perception, thought, and belief stand as a challenge to all forms of dispositionalism.
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Color, Environment, & Human Response. Wiley, 1996.

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Diana, Caroline. Color Atlas of Tissue Response to Biomaterials. Jaypee Brothers Medical Publishers (P) Ltd., 2013. http://dx.doi.org/10.5005/jp/books/12071.

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Chapitres de livres sur le sujet "Responsive colors"

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Farr, Marcus, Andrea Macruz et Alexandre Ulson. « Material Response : Technology, Material Systems and Responsive Design ». Dans Proceedings of the 2021 DigitalFUTURES, 211–20. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5983-6_20.

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AbstractThis paper investigates the role technology and materials play in making meaningful connections between people, architectural space and the workplace. It indicates that design can synergize with responsive technology and material systems to leverage new power for future workplace interaction design. We have created a spatial prototype paired with a series of simulations that act as a proposal to stimulate workplace interaction. The project employs a responsive ceiling that combines a fluid computational pattern with temperature-responsive bi-material laminates with thermochromic coatings and electrically programmed micro-controllers. The project is then connected to a computer code that computes readings based upon ongoing interactions with humans wearing body sensors. The methodology categorizes the simulation results into aroused states and calm states. As the computational patterns and colors change, we are made aware of the relationships between space, technology, and the human sensorium. This conversation brings insight into how we can design more effectively for workplace interactions.
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Seki, Tomohiro, et Hajime Ito. « Luminescent Mechanochromism and the Photosalient Effect of Aryl Gold(I) Isocyanide Complexes ». Dans The Materials Research Society Series, 53–85. Singapore : Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0260-6_5.

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AbstractA study of stimuli-responsive molecules that can change their physical properties or external shape owing to variations in the external environment has attracted much attention owing to potential application in sensors and actuators. Our group has intensively studied aryl gold(I) isocyanide complexes to develop stimuli-responsive molecular crystals that can show luminescent mechanochromism and crystal jumping through phase transitions induced by mechanical stimulation or photoirradiation. Interestingly, some of our gold(I) isocyanide complexes have crystalline or even single crystalline characteristic both before and after mechano-induced emission color changes or photoinduced crystal jump. Based on the detailed information on molecular arrangements of the aryl gold(I) isocyanide complexes, the underlying mechanism of the responses can be clearly identified. In the Sect. 5.2 of this chapter, we review luminescent mechanochromic aryl gold(I) isocyanide complexes that has unique characteristic such as multiple emission colors, infrared emission, and noncentrosymmetry/centrosymmetry switching. Section 5.3 describes the mechano-induced single-crystal-to-single-crystal phase transitions of aryl gold(I) isocyanide complexes with red- and blue-shifted emission color changes or reversibility. In Sect. 5.4, the photoinduced phase transition of a gold(I) complex which accompanied by mechanical motion, i.e., crystal jump is described.
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Kato, Masako. « Vapochromic Soft Crystals Constructed with Metal Complexes ». Dans The Materials Research Society Series, 39–52. Singapore : Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0260-6_4.

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AbstractVapochromism, a phenomenon in which the color or luminescence color of a substance changes in response to gaseous molecules, has potential for developing sensor materials to detect harmful substances in the environment. In addition, vapochromism is scientifically interesting for the direct visualization of interactions between gases and solids. The crystals of metal complexes involve diverse and flexible electronic interactions, such as metal–metal and metal–ligand interactions. It is expected that slight structural changes in such crystals will lead to distinct color or emission color changes, thus achieving highly sensitive and selective vapochromic responses. Consequently, highly ordered and flexible response systems (i.e., soft crystals) can be constructed. This chapter introduces the interesting and attractive features of vapor-responsive soft crystals by discussing platinum complexes that show color and luminescence changes in dilute vapor atmospheres while maintaining an ordered structure, nickel(II) complexes that change magnetic properties in conjunction with a color change, and copper(I) complexes that change luminescence color in response to N-heteroaromatic vapors.
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Fudouzi, Hiroshi. « CHAPTER 3. Opal Photonic Crystal Films with Tunable Structural Color ». Dans Responsive Photonic Nanostructures, 44–62. Cambridge : Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849737760-00044.

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Josephson, David, et Andreas Stein. « CHAPTER 4. Tuning Color and Chroma of Opal and Inverse Opal Structures ». Dans Responsive Photonic Nanostructures, 63–90. Cambridge : Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849737760-00063.

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Hall, Roy. « Perceptual Response ». Dans Illumination and Color in Computer Generated Imagery, 45–62. New York, NY : Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4612-3526-2_3.

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Gist, Conra D. « Finding the Path to Culturally Responsive Pedagogy ». Dans Preparing Teachers of Color to Teach, 1–10. New York : Palgrave Macmillan US, 2014. http://dx.doi.org/10.1057/9781137430168_1.

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Jia, Xiaolu, Haiying Tan et Jintao Zhu. « Responsive Photonic Crystals with Tunable Structural Color ». Dans Polymer-Engineered Nanostructures for Advanced Energy Applications, 151–72. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-57003-7_5.

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Brown, Eb (Ebony), et Kobi Mar. « Culturally responsive practice with children of color. » Dans The gender affirmative model : An interdisciplinary approach to supporting transgender and gender expansive children., 55–69. Washington : American Psychological Association, 2018. http://dx.doi.org/10.1037/0000095-004.

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Mateus, Célia, et António Mexia. « Western Flower Thrips Response to Color ». Dans Thrips Biology and Management, 567–70. Boston, MA : Springer US, 1995. http://dx.doi.org/10.1007/978-1-4899-1409-5_84.

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Actes de conférences sur le sujet "Responsive colors"

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Wu, Shuang, Erich Sutter et Adam Reeves. « Isoluminance in the ERG ». Dans Noninvasive Assessment of the Visual System. Washington, D.C. : Optica Publishing Group, 1992. http://dx.doi.org/10.1364/navs.1992.tua3.

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By definition, switching a field of a given size between isoluminant colors should trigger no response in the luminance channel. In practice, an exact zero point is not observed, and isoluminance is defined in psychophysics as the point of minimal flicker. Similarly we define ERG-isoluminance as a luminance ratio of two different colors which generates minimal ERG response when alternated. If the ERG were linear and the response wave-forms were independent of color, a luminance ratio must exist where color alternation in a stimulus field elicits no response. However, just as in the psychophysical flicker photometry, a minimum, rather than a response null, is found. This minimum defines ERG-isoluminance. The absence of a null point can be explained by the nonlinearities in the ERG response and difference in wave-form and latencies of the major response components associated with different colored stimuli. In this study deviations from linearity are ignored and only a linear approximation of the response (first order kernel) to luminance and chromatic modulation is considered, as the linear approximation accounted for about 80% of the response power.
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Barbu, Daniela. « A LOW-COST DEVICE FOR INVESTIGATING CHROMATIC VISION ». Dans eLSE 2017. Carol I National Defence University Publishing House, 2017. http://dx.doi.org/10.12753/2066-026x-17-251.

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The retina is the light sensitive portion of the eye that contains cone cells responsible for color vision and cone cells responsible for order in darkness. When the rods and cones are stimulated, light signals are transmitted successively by neurons retina, optic nerve fibers then finally reaching the cerebral cortex. Normal eye retina shows three types of color light-sensitive cells; cone cells are sensitive to red light, green or blue. View color deficiency is the inability or decreased ability to see colors or the perception of differences between colors. Depending on the number of cells absent or impaired color vision impairment operation is called: monocromatism, when all the cones are missing or not working, dicromatism when one of three types of cells and tricromatism missing or when one of three cell types has a poor spectral sensitivity. In 1802, Thomas Young consider that all human sight is produced by combining sensitivity to red, green and blue. This theory, amended by Hermann von Helmholtz in 1852, it is known as Young-Helmholtz theory or trichromatic color vision. The fundamental idea was that the eye responds to the three primary colors and combining the three primary colors through additive synthesis of colors forms all other colors. These theories underlie the eye color deficiencies investigation. The paper aims to provide an inexpensive device necessary to investigate color vision in humans. This is achieved in the components recovered from the other old systems, reconditioned and assembled using a simple technology. Research presented the paper will refer both to the device and for tests with it. Studies will be made on different age groups in order to detect any abnormal chromatic vision.
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del Barco, L. Jiménez, J. R. Jiménez, J. Romero et E. Hita. « Visual response and differential color thresholds from metameric matches ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.wl38.

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Is the response of color vision mechanisms linear and additive for stimuli with different spectral radiant power distributions? We studied this possibility by means of results obtained when differential chromaticity thresholds are determined in metameric conditions for an achromatic stimulus. Colors corresponding to stimuli with smooth spectral radiant power distributions and a wide bandwidth are matched with colors corresponding to stimuli and narrow bandwidth (very different degrees of metamerism).
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Billock, Vincent A. « Benham's Top : an information theoretic approach ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1989. http://dx.doi.org/10.1364/oam.1989.thmm4.

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The color opponent type I cells of primates multiplex color and luminance signals, adding center and surround responses for color and subtracting center and surround response for luminance [Ingling and Martinez, Vision Res. 23, 1495 (1983)]. Thus color is encoded by a low pass filter and luminance is encoded by a bandpass filter. The overlap of the low pass chromatic and bandpass achromatic response functions in frequency space places fundamental limits on recovery of the individual signals. This may be shown explicitly using information theory. One consequence of color and luminance multiplexing is that color may be imputed to signals that contain only luminance information. Employing an analog of signal detection theory, it can be shown that the overlap of the color and luminance temporal contrast sensitivity functions predicts the excitation purity vs temporal frequency functions found for pattern-induced flicker colors by Jarvis [Vision Res. 17, 445 (1977)]. The result suggests that stimuli that produce pattern-induced flicker colors (e.g., Benham's Top) constitute a unique probe of the spatiotemporal properties of the various ganglion cells that make up the color opponent channels.
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Stine, Wm Wren, et John E. Sparrow. « Influence Theory for Retinex Models ». Dans Color Appearance. Washington, D.C. : Optica Publishing Group, 1987. http://dx.doi.org/10.1364/ca.1987.tua3.

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The color constancy problem is one of calculating reflectance values for surfaces under differing illuminants. Retinex theory (e.g., Land, 1986) states that relative receptor responses are used to recover surface reflectance after they have been normalized with respect to the responses of neighboring receptor responses. Specifically, a number of paths to the pixel in question are randomly chosen and the logarithm of the ratio of the pixel receptor's response to the geometric mean of the receptor responses over a large number of paths is used as the lightness value for the pixel in question. Symbolically (1) where r(x,k) is the response of receptor x (to pixel x) of class k (where k is either the short wavelength, medium wavelength, or long wavelength cone), G(p,k) is the geometric mean of all of the receptor responses of class k covered by the random paths p, and l(x,k) is the resulting lightness value for receptor x (to pixel x) of class k. By normalizing the lightness value to the geometric mean of the neighboring receptor responses the change of the lightness value in response to overall spectral changes in illumination is minimized.
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Rosenbaum, Jan. « Semi-Automatic Generation of Film Compensation Tables ». Dans Color Appearance. Washington, D.C. : Optica Publishing Group, 1987. http://dx.doi.org/10.1364/ca.1987.tuc5.

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Because of the non-linear response of photographic film to linear increases in light, the spectral quality of light output from phosphors, the extremely short duration of exposure for each pixel, and the differing gamuts of color available in film and color monitors, color compensation tables are necessary in digital film recorders to insure that film images correctly reproduce computer generated images. Compensation tables (look-up tables, or LUTs) serve as a mapping array between the digital count represented in the image desired and the digital count which is processed into the voltage applied to the CRT cathode in the film recorder.
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Shinohara, Koichiro. « Frequency response for partially coherent imagery ROS ». Dans Color Hard Copy and Graphic Arts. SPIE, 1992. http://dx.doi.org/10.1117/12.2322251.

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Watanabe, Takeru Ken. « Dynamic Response of the Human Pupil to Monochromatic Flash Light in Dim-adapted Condition — A Preliminary Examination ». Dans Advances in Color Vision. Washington, D.C. : Optica Publishing Group, 1992. http://dx.doi.org/10.1364/acv.1992.sab5.

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IT has been recognized that, in the scotopic range, the spectral sensitivity of static pupil size demonstrates a curve similar to the CIE scotopic efficiency curve, and as does the pupil's dynamic threshold (1-2). On the other hand, in eyes adapted to light, Bouma measured the spectral energy from 425 to 660 nm, that evoked a 4 to 5 mm pupil contraction, and depicted that pupillary spectral sensitivity is enhanced in the blue wavelength region with a peak at 490 nm, a result quite different from the CIE photopic visibility function (3). To determine whether a blue-cone mediated contribution in the pupillary light reflex pathway is more dominant than in the luminance channel to the visual cortex, it will be of importance to re-investigate the static and dynamic pupillary behaviors in photopic, mesopic, and scotopic ranges.
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Hood, Donald C., et David G. Birch. « Adaptation of human cone receptors : Recordings of cone a-waves ». Dans Advances in Color Vision. Washington, D.C. : Optica Publishing Group, 1992. http://dx.doi.org/10.1364/acv.1992.fa4.

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Boynton and Whitten1 were the first to attempt a quantitative description of the physiology of of primate cone adaptation. Using Brown's technique2 to isolate the summed receptor potential responsible for the cone a-wave of the monkey's ERG, they concluded that substantial adaptation occurred at the level of the cone receptor. The amount of adaptation and the mechanisms involved, however, are still open to debate. Here we focus on the mechanisms of adaptation of human cone receptors.
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Momma, C., S. Honma, H. Yaguchi, H. Haneishi et Y. Miyake. « Color Appearance and Color Reproduction for Mesopic Vision ». Dans Advances in Color Vision. Washington, D.C. : Optica Publishing Group, 1992. http://dx.doi.org/10.1364/acv.1992.sab10.

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Color vision at an intermediate luminance or illuminance level between photopic and scotopic range is called mesopic vision. The color of objects in mesopic vision is differently perceived from that in photopic vision, because not only cones but also rods contribute to the visual response. In general, red becomes dimmer than blue with decreasing illuminance level, which is known as the Purkinje phenomenon. Although many studies concerning the brightness in mesopic vision have been reported, there are very few experimental data dealing with color appearance at the mesopic level.
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Rapports d'organisations sur le sujet "Responsive colors"

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Berkowitz, Jacob F., Christine M. VanZomeren, Jaybus J. Price et Anthony M. Priestas. Incorporating Color Change Propensity into Dredged Material Management to Increase Beneficial Use Opportunities. Engineer Research and Development Center (U.S.), décembre 2020. http://dx.doi.org/10.21079/11681/39261.

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Dredged materials provide a number of beneficial use opportunities, including beach nourishment, habitat creation and restoration, and other activities. In situ sediment color is important for determining aesthetic and habitat suitability, for beach nourishment, and for other projects. However, dredged materials must meet locally established color compatibility requirements (for example, material cannot be too dark). Often, potential sediment sources are close to meeting specified color thresholds, and previous observations suggest that sediments lighten over time. In response to these observations, this study quantified sediment color change potential in a dredged m aterial management context. Results indicate that dredged material sediment color responded to changes in secondary color components, sediment mixing, and photolytic bleaching improving the sediment color for beneficial use application. Findings allowed for development of a conceptual color change capacity framework and supported development of tools for resource managers to incorporate color change dynamic into planning and operations activities.The following report provides a framework for determining the color change capacity of dredged materials using (1) a comprehensive laboratory approach and (2) a semiquantitative index based on source material and placement location conditions. These tools allow practitioners to incorporate dredged-material color change into resource management decisions, thus increasing beneficial use opportunities.
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Hosseini, Jeanette M. Trinitrobenzenesulfonic Acid Colitis Induces Changes in the Contractile Response of Circular Smooth Muscle in the Distal Colon. Fort Belvoir, VA : Defense Technical Information Center, février 1996. http://dx.doi.org/10.21236/ad1011516.

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Jelinek, Raz, Paul Dawson, Timothy Hanks, William Pennington et Julie Northcutt. Bacterial sensors for food processing environments. United States Department of Agriculture, janvier 2013. http://dx.doi.org/10.32747/2013.7598157.bard.

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The overall objective of this project was to develop a new bacterial contaminant sensor based upon polydiacetylene(PDA) which is a unique polymer that changes color and configuration in response to external molecular stimuli. While this polymer has been well studied and has been shown to respond to bacterial stimuli in the laboratory, application to food processing environments has not been demonstrated. One hurdle in the application of biosensors in a food processing environment is interference of food sanitizers with the detection of bacteria. Common food sanitizers were evaluated for their response to PDA and different concentrations paving the way for use of modified PDAs developed by the research team to be used in food plants. Further development of PDA bacterial sensors focused on simplifying its application by immobilizing PDA on cotton and paper for use on swabs, wipes and dip papers. Increasing the sensitivity of PDAs was investigated by attaching fluorophores. Future and continued work will include the decoration of PDAs with apatmers to improve the specificity of the biosensor to food pathogens.
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Li, Li, Joseph Burger, Nurit Katzir, Yaakov Tadmor, Ari Schaffer et Zhangjun Fei. Characterization of the Or regulatory network in melon for carotenoid biofortification in food crops. United States Department of Agriculture, avril 2015. http://dx.doi.org/10.32747/2015.7594408.bard.

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The general goals of the BARD research grant US-4423-11 are to understand how Or regulates carotenoid accumulation and to reveal novel strategies for breeding agricultural crops with enhanced β-carotene level. The original objectives are: 1) to identify the genes and proteins in the Or regulatory network in melon; 2) to genetically and molecularly characterize the candidate genes; and 3) to define genetic and functional allelic variation of these genes in a representative germplasm collection of the C. melo species. Or was found by the US group to causes provitamin A accumulation in chromoplasts in cauliflower. Preliminary genetic study from the Israeli group revealed that the melon Or gene (CmOr) completely co-segregated with fruit flesh color in a segregating mapping population and in a wide melon germplasm collection, which set the stage for the funded research. Major conclusions and achievements include: 1). CmOris proved to be the gene that controls melon fruit flesh color and represents the previously described gflocus in melon. 2). Genetic and molecular analyses of CmOridentify and confirm a single SNP that is responsible for the orange and non-orange phenotypes in melon fruit. 3). Alteration of the evolutionarily conserved arginine in an OR protein to both histidine or alanine greatly enhances its ability to promote carotenoid accumulation. 4). OR promotes massive carotenoid accumulation due to its dual functions in regulating both chromoplast biogenesis and carotenoid biosynthesis. 5). A bulk segregant transcriptome (BSRseq) analysis identifies a list of genes associated with the CmOrregulatory network. 6). BSRseq is proved to be an effective approach for gene discovery. 7). Screening of an EMS mutation library identifies a low β mutant, which contains low level of carotenoids due to a mutation in CmOrto produce a truncated form of OR protein. 8). low β exhibits lower germination rate and slow growth under salt stress condition. 9). Postharvest storage of fruit enhances carotenoid accumulation, which is associated with chromoplast development. Our research uncovers the molecular mechanisms underlying the Or-regulated high level of carotenoid accumulation via regulating carotenoidbiosynthetic capacity and storage sink strength. The findings provide mechanistic insights into how carotenoid accumulation is controlled in plants. Our research also provides general and reliable molecular markers for melon-breeding programs to select orange varieties, and offers effective genetic tools for pro-vitamin A enrichment in other important crops via the rapidly developed genome editing technology. The newly discovered low β mutant could lead to a better understanding of the Or gene function and its association with stress response, which may explain the high conservation of the Or gene among various plant species.
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Chejanovsky, Nor, Diana Cox-Foster, Victoria Soroker et Ron Ophir. Honeybee modulation of infection with the Israeli acute paralysis virus, in asymptomatic, acutely infected and CCD colonies. United States Department of Agriculture, décembre 2013. http://dx.doi.org/10.32747/2013.7594392.bard.

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Honey bee (Apis mellifera) colony losses pose a severe risk to the food chain. The IAPV (Israeli acute paralysis virus) was correlated with CCD, a particular case of colony collapse. Honey bees severely infected with IAPV show shivering wings that progress to paralysis and subsequent death. Bee viruses, including IAPV, are widely present in honey bee colonies but often there are no pathological symptoms. Infestation of the beehive with Varroa mites or exposure to stress factors leads to significant increase in viral titers and fatal infections. We hypothesized that the honey bee is regulating/controlling IAPV and viral infections in asymptomatic infections and this control is broken through "stress" leading to acute infections and/or CCD. Our aims were: 1. To discover genetic changes in IAPV that may affect tissue tropism in the host, and/or virus infectivity and pathogenicity. 2. To elucidate mechanisms used by the host to regulate/ manage the IAPV-infection in vivo and in vitro. To achieve the above objectives we first studied stress-induced virus activation. Our data indicated that some pesticides, including myclobutanil, chlorothalonil and fluvalinate, result in amplified viral titers when bees are exposed at sub lethal levels by a single feeding. Analysis of the level of immune-related bee genes indicated that CCD-colonies exhibit altered and weaker immune responses than healthy colonies. Given the important role of viral RNA interference (RNAi) in combating viral infections we investigated if CCD-colonies were able to elicit this particular antiviral response. Deep-sequencing analysis of samples from CCD-colonies from US and Israel revealed high frequency of small interfering RNAs (siRNA) perfectly matching IAPV, Kashmir bee virus and Deformed wing virus genomes. Israeli colonies showed high titers of IAPV and a conserved RNAi pattern of targeting the viral genome .Our findings were further supported by analysis of samples from colonies experimentally infected with IAPV. Following for the first time the dynamics of IAPV infection in a group of CCD colonies that we rescued from collapse, we found that IAPV conserves its potential to act as one lethal, infectious factor and that its continuous replication in CCD colonies deeply affects their health and survival. Ours is the first report on the dominant role of IAPV in CCD-colonies outside from the US under natural conditions. We concluded that CCD-colonies do exhibit a regular siRNA response that is specific against predominant viruses associated with colony losses and other immune pathways may account for their weak immune response towards virus infection. Our findings: 1. Reveal that preventive measures should be taken by the beekeepers to avoid insecticide-based stress induction of viral infections as well as to manage CCD colonies as a source of highly infectious viruses such as IAPV. 2. Contribute to identify honey bee mechanisms involved in managing viral infections.
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Venkateswaran, Nitya, Jay Feldman, Stephanie Hawkins, Megan A. Lewis, Janelle Armstrong-Brown, Megan Comfort, Ashley Lowe et Daniela Pineda. Bringing an Equity-Centered Framework to Research : Transforming the Researcher, Research Content, and Practice of Research. RTI Press, janvier 2023. http://dx.doi.org/10.3768/rtipress.2023.op.0085.2301.

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Since the mainstream racial awakening to pervasive and entrenched structural racism, many organizations have made commitments and adopted practices to increase workplace diversity, inclusion, and equity and embed these commitments in their organizational missions. A question often arises about how these concepts apply to research. This paper discusses how organizations can build on their specific commitments to diversity, inclusion, and equity by applying these principles in the research enterprise. RTI International’s framework for conducting equity-centered transformative research highlights how incorporating principles of diversity, inclusion, and equity requires a departure from mainstream practice because of historical and intentional exclusion of these principles. Drawing on methodologies of culturally responsive evaluation, research, and pedagogy; feminist, Indigenous, and critical methodologies; community-based participatory research; and theories of social transformation, liberation, and racial justice, this organizing framework illustrates what this departure requires and how research can serve liberation and social justice by transforming the researcher, the research content, and the day-to-day practice of conducting research. Centering the work of seminal scholars and practitioners of color in the field, this paper provides a holistic framework that incorporates various research approaches and paradigms intended to shift power to minoritized and marginalized communities to achieve social transformation through research.
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Grueso-Navarro, Elena, Leticia Rodríguez-Alcolado, Ángel Arias, Emilio J. Laserna-Mendieta et Alfredo J. Lucendo. Influence of HLA-DQA1*05 allele in the response to anti-TNFα drugs in inflammatory bowel diseases. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, février 2023. http://dx.doi.org/10.37766/inplasy2023.2.0076.

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Review question / Objective: Do patients with inflammatory bowel disease and treated with any anti-TNFα drug who had the HLA-DQA1*05 allele (in heterozygosis or homozygosis) have lower response or persistence to those drugs than patients without HLA-DQA1*05 allele? Condition being studied: Inflammatory bowel diseases (IBD), which includes Crohn’s disease (CD) and ulcerative colitis (UC), is a chronic inflammatory condition that may affect any part of the digestive tract (CD) or be limited to the colon (UC). While the specific aetiology of IBD remains unknown, it is believed to involve a complex impairment in the immunity of the gut mucosa due to a combination of several genetic and environmental factors, being the microbiota one of the latest that more attraction has received in recent years. Symptoms of IBD (such as abdominal pain, diarrhoea, fever, tiredness or rectal bleeding) may be either constant or alternate between periods of limited disease activity and flares with remarkable presence of symptoms. As IBD is associated with significant morbidity and disability, pharmacological treatment is required in most cases, especially in CD, aimed at reducing the inflammatory response and attenuating the activity of the immune system. In the moderate and severe forms of the disease, therapy is usually based on immunosuppressant and/or biological drugs. Among the latest, anti-TNFα drugs (infliximab or adalimumab) are normally chosen as the initial biological therapy.
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Kibler, Amanda, René Pyatt, Jason Greenberg Motamedi et Ozen Guven. Key Competencies in Linguistically and Culturally Sustaining Mentoring and Instruction for Clinically-based Grow-Your-Own Teacher Education Programs. Oregon State University, mai 2021. http://dx.doi.org/10.5399/osu/1147.

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Grow-Your-Own (GYO) Teacher Education programs that aim to diversify and strengthen the teacher workforce must provide high-quality learning experiences that support the success and retention of Black, Indigenous, and people of color (BIPOC) teacher candidates and bilingual teacher candidates. Such work requires a holistic and systematic approach to conceptualizing instruction and mentoring that is both linguistically and culturally sustaining. To guide this work in the Master of Arts in Teaching in Clinically Based Elementary program at Oregon State University’s College of Education, we conducted a review of relevant literature and frameworks related to linguistically responsive and/or sustaining teaching or mentoring practices. We developed a set of ten mentoring competencies for school-based cooperating/clinical teachers and university supervisors. They are grouped into the domains of: Facilitating Linguistically and Culturally Sustaining Instruction, Engaging with Mentees, Recognizing and Interrupting Inequitable Practices and Policies, and Advocating for Equity. We also developed a set of twelve instructional competencies for teacher candidates as well as the university instructors who teach them. The instructional competencies are grouped into the domains of: Engaging in Self-reflection and Taking Action, Learning About Students and Re-visioning Instruction, Creating Community, and Facilitating Language and Literacy Development in Context. We are currently operationalizing these competencies to develop and conduct surveys and focus groups with various GYO stakeholders for the purposes of ongoing program evaluation and improvement, as well as further refinement of these competencies.
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Ibdah, Mwafaq, Dorothea Tholl et Philipp W. Simon. How temperature stress changes carrot flavor : Elucidating the genetic determinants of undesired taste in carrots. United States Department of Agriculture, janvier 2014. http://dx.doi.org/10.32747/2014.7598171.bard.

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Global climate change and warming temperatures represent the greatest future challenge for global food production and quality. In this project, we will define the genetic factors of climate-associated taste deficiencies in carrot. Carrot is considered one of the leading horticultural crops in the world in terms of its nutritional value, health benefits, and unique flavor based on its high content of carotenoids and volatile aroma compounds. In recent years, carrot genotypes of different color with improved nutraceutical attributes have been developed. When exposed to high growth temperatures, carrots develop an undesired harsh and bitter taste caused by the accumulation of terpene metabolites. This taste deficiency represents a quality defect to carrot breeders and large- scale growers and needs to be minimized for successful marketing of carrot crops. Surprisingly, the genetic determinants of bitter and harsh flavor in carrot and their response to temperature stress are not well characterized. We started to elucidate these factors in different carrot cultivars by investigating the biosynthesis of volatile terpenes, which represent the predominant flavor compounds in carrots. Also, up to date we identified and characterized two terpenesynthase enzymes, one of which produces (E)-β- caryophyllene, a major terpene component in carrot root. Both TPSs may contribute to the observed variation in volatile terpene formation.
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Darity Jr., William, M’Balou M’Balou Camara et Nancy MacLean. Setting the Record Straight on the Libertarian South African Economist W. H. Hutt and James M. Buchanan. Institute for New Economic Thinking Working Paper Series, mai 2022. http://dx.doi.org/10.36687/inetwp184.

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In their stormy response to Nancy MacLean’s book Democracy in Chains, some academics on the libertarian right have conducted a concerted defense of Nobel Laureate James Buchanan’s credentials as an anti-racist, or at least a non-racist. An odd component of their argument is a claim of innocence by association: the peripatetic South African economist and Mont Pelerin Society founding member William Harold Hutt was against apartheid; Buchanan was a friend and supporter of Hutt; therefore, Buchanan could not have been abetting segregationists with his support for public funding of segregationist private schools. At the core of this chain of argument is the inference that Hutt’s opposition to apartheid proves that Hutt himself was committed to racial equality. However, just as there were white supremacists who opposed slavery in the United States, we demonstrate Hutt was a white supremacist who opposed apartheid in South Africa. We document how Hutt embraced notions of black inferiority, even in The Economics of the Colour Bar, his most ferocious attack on apartheid. Whether or not innocence by association is a sound defense of anyone’s ideology or conduct, Hutt, himself, was not innocent of white supremacy.
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