Log in

Relevant bibliographies by topics / Garnet structure

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'Garnet structure'

Author: Grafiati

Published: 6 September 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Garnet structure.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Garnet structure"

1

Islam, Manisha, Monica Ciomaga Hatnean, Geetha Balakrishnan, and Oleg A. Petrenko. "Frustrated Magnet Mn3Al2Ge3O12 Garnet: Crystal Growth by the Optical Floating Zone Method." Crystals 13, no. 3 (February 25, 2023): 397. http://dx.doi.org/10.3390/cryst13030397.

Full text

Abstract:

Mn3Al2Ge3O12 is a member of the garnet family of compounds, A3B2(CO4)3, whose magnetic properties are affected by a high degree of geometrical frustration. The magnetic frustration is at the origin of the intriguing magnetic properties that these materials exhibit, such as a long range hidden order derived from multipoles formed from 10-spin loops in the gadolinium gallium garnet, Gd3Ga5O12. Mn3Al2Ge3O12 garnet is isostructural to the thoroughly investigated Gd garnets, Gd3Ga5O12 and Gd3Al5O12. Moreover, in Mn3Al2Ge3O12, the Heisenberg-like Mn2+ magnetic ions (L= 0) are also arranged in corner sharing triangles that form a hyperkagomé structure. The identical crystallographic structures and similar Heisenberg-like behaviour of the magnetic ions make manganese aluminium germanium garnet the closest compound to the gadolinium garnets in its magnetic properties. Here, we report, for the first time, the growth of a large, high quality single crystal of the Mn3Al2Ge3O12 garnet by the floating zone method. X-ray diffraction techniques were used to characterise and confirm the high crystalline quality of the Mn3Al2Ge3O12 crystal boule. Temperature-dependent magnetic susceptibility measurements reveal an antiferromagnetic ordering of the Mn2+ ions below TN= 6.5 K. The high quality of the single crystal obtained makes it ideal for detailed investigations of the magnetic properties of the system, especially using neutron scattering techniques.

APA, Harvard, Vancouver, ISO, and other styles

2

Galuskina, Irina, Evgeny Galuskin, Roman Włodyka, Piotr Dzierżanowski, and Roman Wrzalik. "Atoll Garnets in "Achtarandite" Serpentinites: Morphology, Composition and Mode of Origin." Mineralogia 38, no. 2 (January 1, 2007): 139–50. http://dx.doi.org/10.2478/v10002-007-0022-9.

Full text

Abstract:

Atoll Garnets in "Achtarandite" Serpentinites: Morphology, Composition and Mode of OriginAtoll garnets in aposkarn serpentinite from the Wiluy River, Republic of Sakha-Yakutia, Russia, have the classic form comprising a garnet core, an intermediate zone filled with chlorite-group minerals and an outer garnet atoll. The core of an illustrated example is complexly zoned from schorlomite to grossular-andradite. Morphologically, the core is a rhombic dodecahedral crystal. The atoll crystallized as a tetragon-trisoctahedron with minor rhombic dodecahedron faces and is composed of hibschite and "hydroandradite". The atoll garnet formed as the result of selective dissolution and substitution by chlorite of an internal hibschite zone with columnar structure that became unstable under new conditions of crystallization. The pattern of dissolution traces defects in the garnet crystal. The growth of the atoll garnets reflects the main stages in the evolution of the Wiluy deposit itself and is associated with the development of the Siberian traps.

APA, Harvard, Vancouver, ISO, and other styles

3

Tokuda, Makoto, Akira Yoshiasa, Tsutomu Mashimo, Kazuake Iishi, and Akihiko Nakatsuka. "The vanadate garnet Ca2NaCd2V3O12: a single-crystal X-ray diffraction study." Acta Crystallographica Section C Structural Chemistry 74, no. 4 (March 14, 2018): 460–64. http://dx.doi.org/10.1107/s2053229618003741.

Full text

Abstract:

Single crystals of the vanadate garnet Ca2NaCd2V3O12 (dicalcium sodium dicadmium trivanadate) were synthesized using the floating-zone method and the crystal structure was investigated using single-crystal X-ray diffraction. We considered the effectiveness of substitution of the Y-site cation with reference to previous structural studies of vanadate garnets. The structures of vanadate garnets are subject to geometric constraints similar to those of silicate garnets. These constraints force the tetrahedral–dodecahedral shared edge length in vanadate garnets to become shorter than the unshared dodecahedral edge length, as in ugrandite (uvarovite, grossular and andradite) garnets. However, the vanadate garnet Ca2NaCd2V3O12 exhibits the normal structural feature, similar to pyralspite (pyrope, almandine and spessartine) garnets, namely that the dodecahedral–dodecahedral shared edge length is shorter than the unshared dodecahedral edge length. With increasing ionic radius of the Y-site cation, the atomic coordinates x, y and z of oxygen adopt values which satisfy Pauling's third rule.

APA, Harvard, Vancouver, ISO, and other styles

4

Tsidaeva, Natalia, Viktorija Abaeva, Elena Enaldieva, Tamerlan T. Magkoev, Anatolij Turiev, Aljona Ramonova, and Tengiz Butkhuzi. "Features of Optical Anisotropy of Terbium Iron Garnet." Key Engineering Materials 543 (March 2013): 364–67. http://dx.doi.org/10.4028/www.scientific.net/kem.543.364.

Full text

Abstract:

Rare earth iron garnets with narrow ferromagnetic resonance linewidths, very low hysteresis losses, and excellent dielectric properties have been widely applied in microwave devices in a wide range of frequencies (1100 GHz), magnetooptical transducers and typically employed as magnetic recording media [1-1. The rare earth iron garnets which can be described by chemical unit formulaRE3Fe5O12belong to cubic system with space groupIa3̄d, whose cell contains eightRE3Fe5O12molecules and crystal lattice contains three crystallographic sites, dodecahedral site 24c{RE3+}, octahedral site 16a[Fe3+] and tetrahedral site 24d(Fe3+). The garnet in fact does not allow distortion to lower symmetry owing to its non-efficiently packed structure, which makes iron garnet structure become unstable with increasing rare earth ionic radius.

APA, Harvard, Vancouver, ISO, and other styles

5

Petrakakis, Konstantin, Nathalie Schuster-Bourgin, Gerlinde Habler, and Rainer Abart. "Ca-rich garnets and associated symplectites in mafic peraluminous granulites from the Gföhl Nappe System, Austria." Solid Earth 9, no. 3 (June 19, 2018): 797–819. http://dx.doi.org/10.5194/se-9-797-2018.

Full text

Abstract:

Abstract. Mafic peraluminous granulites associated with the mantle-derived peridotites of the Dunkelsteiner Wald provide evidence of the tectono-metamorphic evolution of the Gföhl Nappe System, Austria. They contain the primary assemblage garnet + Al-rich clinopyroxene + kyanite. Large Ca- and Mg-rich garnets are embedded in a granoblastic matrix of Al-rich clinopyroxene, Ca-rich plagioclase and minor hornblende. They were partially replaced by different generations of symplectites: (a) corundum + sapphirine + spinel + plagioclase formed around kyanite inclusions, (b) orthopyroxene + spinel + plagioclase ± hornblende formed at their rims and (c) clinopyroxene + orthopyroxene + spinel + plagioclase ± hornblende formed within cracks. Large garnets show complex compositional structure comprising several repeatedly occurring garnet types, which are characterized by specific compositions. The areal extent and the cross-cutting relations observed in element distribution maps allowed for the derivation of the relative timing of the formation of the different garnet types. The compositional features of the garnets indicate post-formational modification by intra-crystalline diffusion and metasomatic agents. The garnet composition isopleths in equilibrium assemblage diagrams are in line with compositions modification as indicated by the element distribution maps. They confirm the deviation of composition from equilibrium for all garnet types. Furthermore, at least the youngest garnet types show evidence of metasomatic (Fe + Mg) loss affecting their Ca content. Pressure–temperature (P–T) estimates are based on equilibrium assemblage diagrams that reproduce satisfactorily the observed mineral assemblages and measured mineral compositions. Criteria for checking the existence of preserved equilibrium compositions are suggested. The results call into question the invariability of the assumption that the Ca content and/or zoning in garnet preserves primary P–T information from garnet growth in every case. Recrystallization and compositional readjustment of the reactive garnet volume during symplectite formation led to the development of pronounced, secondary diffusion-induced zoning profiles overprinting the different garnet types and post-dating the complex garnet compositional structure. The primary assemblage is stable between 760 and 880 °C and pressures > 11 kbar. The bulk composition of the crack symplectites is almost isochemical to the oldest, broken-down garnet type. These symplectites were formed above 730 °C and pressures between 5 and 7.5 kbar. The rocks studied underwent more or less isothermal decompression from pressures above 11 to ∼ 6 kbar at temperatures of about 800 °C. Crack and rim symplectites were formed after decompression during the early stage of approximately isobaric cooling under conditions of low differential stress. Due to limited availability of fluids promoting symplectite formation, the timescale of symplectite formation calculated from secondary diffusion profiles associated with crack symplectites is shown to be geologically very short (< 0.5 ka).

APA, Harvard, Vancouver, ISO, and other styles

6

Daminov, Mirzogid Islomovich, Mirzo Zokirovich Sharipov, Rustam Khalilovich Shamsiev, and Dilshod Ergashovich Khaitov. "DOMAIN STRUCTURE AND SOME PROPERTIES OF RARE-EARTH GRANITE FERRITES." Scientific Reports of Bukhara State University 4, no. 3 (June 26, 2020): 3–9. http://dx.doi.org/10.52297/2181-1466/2020/4/3/12.

Full text

Abstract:

The crystals of rare-earth garnet ferrites have a complex domain structure, the form of which substantially depends on the crystallographic orientation of the under study sample. Due to the cubic symmetry of rare-earth garnet ferrites, 70, 110, and 180-degree domains can exist in them, and depending on the crystallographic orientation of the sample, the spontaneous magnetization vector in the realized domain configuration can lie in the plane of the sample (“Cotton” domains) perpendicular to the plane of the sample ("Faraday" domains), and make up a certain angle with its plane. According to known data, in all cases, the boundaries between neighboring domains in rare-earth garnet ferrites are the domain walls of the Bloch type

APA, Harvard, Vancouver, ISO, and other styles

7

Livshits, Tatiana, Sergey Yudintsev, Sergey V. Stefanovsky, and Rodney Charles Ewing. "New Actinide Waste Forms with Pyrochlore and Garnet Structures." Advances in Science and Technology 73 (October 2010): 142–47. http://dx.doi.org/10.4028/www.scientific.net/ast.73.142.

Full text

Abstract:

Cubic oxides with pyrochlore and garnet structures are promising matrices for long-lived actinides immobilization. Their isomorphic capacity with respect to An and REE was determined. To predict the long-term behavior of these matrices under their underground disposal radiation stability of synthetic pyrochlores and garnets was studied. Most of titanate phases have the critical (amorphization) doses close to 0.2 displacements per atom at 298 K. This value is significantly higher for Sn- and Zr-rich pyrochlores. Corrosion behavior of the pyrochlore- and garnet-composed matrices was investigated. The lowest actinides leach rates were observed in water and alkaline solutions most typical for underground waste repositories. Amorphization of the phases has a low influence on their corrosion behavior in solutions. Possibility for joint incorporation of actinides and Tc into zirconate- and titanate-based matrices with the pyrochlore structure is discussed.

APA, Harvard, Vancouver, ISO, and other styles

8

Simion, B. M., R. Ramesh, E. Marinero, R. L. Pfeffer, and G. Thomas. "Microstructural and magneto-optical characterization of ferrimagnetic multilayered thin-film rare-earth iron garnet heterostructures." Proceedings, annual meeting, Electron Microscopy Society of America 52 (1994): 898–99. http://dx.doi.org/10.1017/s042482010017222x.

Full text

Abstract:

The continuous demands of the computer industry for increased reliability, portability, and density of storage media, has opened a new chapter in the magnetic recording research, by focusing on the viability of magneto-optical materials for storage. Several materials are considered presently to be at the forefront of this new quest: ternary rare-earth transition-metal alloys (such as GdTbFe or TbFeCo), garnets, and Co/Pt or Co/Pd mutilayers. Of these, the ferrimagnetic garnets, due to their relatively flexible structure, may accommodate a large number of substituting ions, allowing thus for a very good control of their magnetic and magneto-optical properties. The good results obtained during thegrowth of epitaxial superconducting oxide thin films by pulsed laser deposition (PLD), has encouragedus to try this novel deposition technique in the growth of multilayered heteroepitaxial ferrimagneticiron garnet thin films.Superlattice heterostructures consisting of alternating single crystalline ferrimagnetic yttrium-iron-garnet (YIG) and bismuth-iron-garnet (BIG) thin film layers, as well as alternating YIG and europiumsubstituted BIG (EBIG), were deposited on single crystalline (111) paramagnetic gadolinium-galliumgarnet (GGG) substrates.

APA, Harvard, Vancouver, ISO, and other styles

9

Song, Zhen, Dandan Zhou, and Quanlin Liu. "Tolerance factor and phase stability of the garnet structure." Acta Crystallographica Section C Structural Chemistry 75, no. 10 (September 6, 2019): 1353–58. http://dx.doi.org/10.1107/s2053229619011975.

Full text

Abstract:

We introduce a structural descriptor, the tolerance factor, for the prediction and systematic description of the phase stability with the garnet structure. Like the tolerance factor widely adopted for the perovskite structure, it is a compositional parameter derived from the geometrical relationship between multi-type polyhedra in the garnet structure, and the calculation only needs the information of the ionic radius. A survey of the tolerance factor over 130 garnet-type compounds reveals that the data points are scattered in a narrow range. The tolerance factor is helpful in understanding the crystal chemistry of some garnet-type compounds and could serve as a guide for predicting the stability of the garnet phase. The correlation between the tolerance factor and the garnet-phase stability could be utilized by machine learning or high-throughput screening methods in material design and discovery.

APA, Harvard, Vancouver, ISO, and other styles

10

Kotsyubynsky, А. О. "Crystalline, magnetic and domain structure of epitaxial ferritegarnet films (review)." Фізика і хімія твердого тіла 18, no. 3 (September 15, 2017): 275–81. http://dx.doi.org/10.15330/pcss.18.3.275-281.

Full text

Abstract:

The article gives a literary review of the current state of research of ferrite-garnet films. The basic crystalline and magnetic characteristics of thin films of iron-yttrium garnet are considered. We analyzed the causes of the appearance of the labyrinth, stripe and cylindrical domain structure. It is shown that the domain structure of the yttrium iron garnet strongly depends on many parameters of the films, in particular on the thickness, structural perfection of the surface and the sample as a whole. The article reviews the most common methods of synthesis, ion implantation and post-growth treatment of ferrite-garnet films. The study of dependencies between the conditions of obtaining, the chemical composition, the posttreatment conditions, the defective structure and the magnetic properties of ferrite-garnet films have great practical value for obtaining films with predetermined properties.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Garnet structure"

1

Ramesh, Mahadevan. "Coupled oscillations of the magnetic domain-domain wall system in substituted garnet thin films /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487262513407393.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Asami, Kazuki. "Lanthanoid Activated Phosphors with 5d-4f Visible Luminescence for Lighting Applications: Development and Characterization Based on Control of Electronic Structure and Ligand Field." Kyoto University, 2019. http://hdl.handle.net/2433/242726.

Full text

Abstract:

Kyoto University (京都大学)
0048
新制・課程博士
博士(人間・環境学)
甲第21849号
人博第878号
新制||人||210(附属図書館)
2018||人博||878(吉田南総合図書館)
京都大学大学院人間・環境学研究科相関環境学専攻
(主査)教授田部勢津久, 教授内本喜晴, 教授加藤立久, 教授吉田寿雄
学位規則第4条第1項該当

APA, Harvard, Vancouver, ISO, and other styles

3

Chun, Yoonsoo. "Domain coupling and resistance in perpendicularly magnetized metal-oxide bilayers /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/10570.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Qassym, Lilia. "Etude et mise au point de ferrites de structure grenat à basse température de frittage pour intégration dans les circulateurs hyperfréquences." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS479/document.

Full text

Abstract:

Les systèmes embarqués dans les aéronefs comme dans les véhicules spatiaux doivent impérativement se conformer aux impératifs de masse et de volume mais aussi de coût. Les modules actifs pour antenne à balayage électronique constituent, dans ce cadre, un enjeu stratégique majeur en termes de masse, de volume et de fiabilité. Dans une antenne à balayage électronique actuelle, on peut trouver jusqu’à 1000 modules, chacun étant équipé d’un circulateur-isolateur afin de garantir ses performances. La technologie des circulateurs et des isolateurs à ferrite reste la plus performante en termes d’isolation et de pertes d’insertion. Elle est de plus totalement passive et ne demande aucune énergie extérieure pour son fonctionnement. Elle reste néanmoins coûteuse car la fabrication industrielle de ces dispositifs consiste à assembler mécaniquement de nombreuses pièces usinées précisément : céramiques magnétiques et diélectriques, aimants, conducteurs en cuivre et pièces en métal magnétique doux. De plus, le niveau d’intégration recherché nécessite de réduire les dimensions sans augmenter les pertes pour des niveaux de puissance qui peuvent être importants. S’inspirant des composants céramiques multicouches (condensateurs et inductances) ainsi que de la technologie LTCC (Low Temperature Cofired Ceramics), une nouvelle voie de fabrication de ces composants, en rupture avec les technologies d’assemblage traditionnelles, est abordée dans ces travaux de thèse. L’idée consiste à réaliser par cofrittage le cœur du composant qui est le plus délicat à ajuster et qui détermine le volume final. Les ferrites qui constituent actuellement le cœur des circulateurs sont principalement des grenats ferrimagnétiques fabriqués par des techniques céramiques classiques et frittés à haute température (> 1400°C). Pour les rendre compatibles de la technologie LTCC, il est nécessaire de diminuer leur température de frittage. Les températures visées doivent être inférieures à 1000°C pour pouvoir cofritter avec des parties métalliques en or et si possible être proches de 900°C pour espérer cofritter avec de l’argent. Dans ce contexte, l’objectif de ce travail de thèse était de mettre au point des grenats ferrimagnétiques pour des applications en hyperfréquences présentant des températures de frittage proche de 900°C. Ces ferrites ont alors été utilisés pour la réalisation de circulateurs hyperfréquences, composants indispensables dans les systèmes de Radars et de télécommunications. De plus, des études d’optimisation des propriétés magnétiques et diélectriques de ces ferrites ont aussi été réalisées pour adapter le ferrite aux conditions de fonctionnement (gamme de fréquence et niveau de puissance)
Embedded systems in aircraft must comply with the requirements of mass, volume and cost. The active modules of electronic scanning antenna are, in this context, a strategic challenge in terms of mass, volume and reliability. Today, there are up to 1000 modules per antenna, each one containing a circulator-isolator in order to guarantee its performances. The technology of ferrite circulators and isolators remains the most efficient in terms of isolation and insertion losses. It is also fully passive as no external energy is required to work. However this technology is expensive due to complex mechanical assembling of the different materials: magnetic and dielectric ceramics, magnets, conductors made of copper and soft metallic material. The integration of such devices also requires the reduction of dimensions without increasing losses for power levels that can be high. Based on by multilayer ceramic components (capacitors and inductors) as well as Low Temperature Cofired Ceramics (LTCC) technology, a new way of manufacturing these components, is investigated in this PhD work.. The idea is to be able to cofire the heart of the component which is the most difficult to adjust and also determines the final volume. The ferrites which currently constitute the core of the circulators are ferrimagnetic garnets synthetized by using a conventional ceramic process and sintered at high temperature (> 1400°C). To make them compatible with LTCC technology, it is essential to reduce their sintering temperature. The targeted temperatures must be less than 1000°C in order to cofire with gold metal parts and, if possible, close to 900°C for circulators with silver. In this context, the objective of this PhD work was to develop a ferrimagnetic garnet for microwave applications with sintering temperatures close to 900°C. This ferrite was then used for the preparation of microwave circulators which are essential components in radar and telecommunications systems. In addition, studies of optimization of the magnetic and dielectric properties have also been carried out to meet the operating requirements (frequency band and power level)

APA, Harvard, Vancouver, ISO, and other styles

5

Edwards, A. R. "Defects and diffusion in garnet structured silicates." Thesis, University of Manchester, 1991. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.606285.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

O'Callaghan, Michael Patrick. "Structure and ionic transport properties of lithium-conducting garnets." Thesis, University of Nottingham, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493341.

Full text

Abstract:

This thesis describes the synthesis and characterisation of three related series of lithium-containing garnets. All compounds have been synthesised by conventional solid-state ceramic methods at temperatures up to 960 Â°C.

APA, Harvard, Vancouver, ISO, and other styles

7

Ross, Kirk Campbell. "XRD Structural Assessment of Peridotitic Garnet with Anomalous REE Distribution." Thesis, Laurentian University of Sudbury, 2013. https://zone.biblio.laurentian.ca/dspace/handle/10219/2028.

Full text

Abstract:

This thesis explored, as its major aim, the crystallographic and compositional characteristics of a particular type of peridotitic garnet associated with kimberlite. This garnet has a highly sinusoidal rare-earth element (REE) pattern as its distinguishing feature. Before the main research question could be addressed, a technique had to be developed that enabled the rapid and straight-forward acquisition of a full profile digital X-ray diffractogram from a single sub-milligram crystal fragment. After extensive experimentation and testing, successful development and realization of a method that is capable of producing such data was achieved. The next step of this research project was to empirically investigate and assess the crystal lattice strain model (CLSM) of Blundy and Wood (1994). Careful analyses of the REE present in a suite of clinopyroxenes were compared to the crystal structure data given from the XRD technique outlined above. Clinopyroxene is particularly useful for such an assessment because the radius of the M2 site in this mineral is between the largest and smallest REE, making the distribution of REE particularly sensitive to variation of the M2 site, which in turn is a direct consequence of the overall pyroxene structure. Subsequent to illustrating that XRD data could be collected on such small material and the XRD data and structural data given from the CLSM correlate strongly, peridotitic garnets with sinusoidal REE patters were investigated. The conclusions drawn in the first two contributions – namely that it was possible to collect accurate and precise XRD data from sub-milligram specimens and that the crystal structure and REE distribution were directly related – were imperative for the deduction of conclusions in the final, major research question. The XRD analysis of many garnets with and without sinusoidal REE patterns showed the presence of a small amount of an additional phase in some of these garnets. While this phase (2 out of 3 peaks indexed as possibly orthorhombic perovskite) is not present in sufficient quantities to give rise to such a strong sinusoidal segment in the garnet REE pattern, it prompted the critical step forward in formulating a working hypothesis for the otherwise inexplicable REE patterns. Specifically, I posit that many of the sinusoidal garnets may originally have precipitated as a very high pressure phase (in the mantle transition zone or deeper) that subsequently underwent a subsolidus isochemical transformation to garnet. Possible original precursor mineralogy is a combination of two perovskites or a perovskite + iv garnet assemblage. Theoretical calculation using experimental partition coefficients demonstrated that a mixture of Ca-perovskite (CaPv) and Mg-perovskite (MgPv) REE patterns in the approximate proportions of 10% CaPv and 90% MgPv produce a REE diagram that is strikingly similar to those observed in sinusoidal single phase garnet. It has been shown experimentally that with increasing depth in the mantle, garnet plus a progressively increasing CaPv component is the stable mineral assemblage. Initial precipitation of two perovskites or CaPv + garnet as cumulates from a deep magma ocean would preserve the REE distribution of these minerals. Subsequent exhumation of such an assemblage would result in the retrogressive subsolidus phase transformation to a mineral stable at conditions of T and P of the shallow mantle environment, i.e. garnet, while retaining the REE pattern of the initial precipitate mineral assemblage. While this working hypothesis will require many more tests, its proposal may have significant implications for the mantle structure.

APA, Harvard, Vancouver, ISO, and other styles

8

Guillery, Pierre. "Étude de l'interaction sol-structure au site instrumenté de Garner Valley, Californie." Master's thesis, Université Laval, 2017. http://hdl.handle.net/20.500.11794/27774.

Full text

Abstract:

Le site de Garner Valley, Californie, est un site dont l’instrumentation est sismique, géotechnique et structurelle. Les enregistrements effectués sur la structure test du site permettent d’étudier l’interaction sol-structure. Il s’agit du phénomène qui différencie la réponse d’une structure réelle – reposant sur un sol flexible – et celle de la structure où la fondation est idéalisée comme rigide et reposant sur un sol également rigide. Dans le but de mettre en œuvre l’analyse de l’interaction sol-structure sur le site de Garner Valley via la méthode des sous-structures, les paramètres géotechniques nécessaires à la constitution de la fonction d’impédance de la fondation sont étudiés par analyse paramétrique de la réponse d’une colonne de sol uni-axiale par modèle linéaire équivalent à partir des données sismiques et géotechniques de terrain. La réduction de module de cisaillement G/Gmax et l’amortissement hystérétique du sol βs ainsi trouvés permettent en association aux données géométriques et géotechniques de constituer les équations des ressorts et amortisseurs qui sont utilisés en fonction d’impédance pour la constitution du modèle d’analyse par méthode des sous-structures. La taille réduite de la fondation permet l’hypothèse d’absence de rotation et torsion. Les ressorts sont alors implantés verticalement et horizontalement. L’analyse de l’interaction cinématique est effectuée : malgré la taille réduite de la fondation et les différences mineures entre Free Field Motion et Foundation Input Motion, les effets sont notoires avec une baisse de l’accélération maximale de la structure. La baisse majeure de l’accélération maximale de la structure calculée en prenant compte l’interaction sol-structure correspond aux données de terrain. Les effets typiques de l’interaction inertielle - allongement de la période et augmentation de l’amortissement - sont par ailleurs observés et comparés à des résultats théoriques.
The Garner Valley site in California is a seismic, geotechnical and structural instrumented site. The structural recordings on the test structure provides data for soil-structure interaction studies. Soil structure interaction is the phenomenon that differentiate the response of a structure based on an perfectly rigid foundation within a perfectly rigid soil, from the response of a structure in reality. In order to analyse soil-structure interaction effects on the Garner Valley test structure, using the substructure analysis method, geotechnical and structural parameters which are necessary for the constitution of the foundation impedance function are analysed by a dynamic parametric analysis of the soil column under seismic load, using uniaxial linear equivalent model, from seismic and geotechnical in-situ data. The shear modulus reduction and hysteretic damping of the soil are therefore found and can be used in combination with geometrical and geotechnical data to calculate the springs and dashpots equations, used as solutions for the foundation impedance function needed in the substructure approach. The small size of the foundation at Garner Valley allows the non-rotational and non-torsional foundation hypothesis. Springs and dashpots are then implemented in addition of the fixed base model, horizontally and vertically. Kinematic interaction is also studied, even though the foundation size is small and the difference between foundation input motion and free field motion are minimal, the use of foundation input motion as input reduces maximum acceleration on top of the structure. This reduction matches the in-situ levels of maximum acceleration when the foundation is flexible, using springs and dashpots. The results of inertial interaction, period lengthening and damping increase, are also noticed, and compared to theoretical results.

APA, Harvard, Vancouver, ISO, and other styles

9

Zhao, Tianming. "A Water Garden: Celebrating the Beauty of Nature." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/92872.

Full text

Abstract:

Nature, as the major consideration of the Organic Architecture of Frank Lloyd Wright, has constantly been favored as a path for a pure soul to communicate with the spiritual. Inspired by Wright's Organic Architecture and Traditional Chinese Garden, this thesis celebrates the beauty of Nature in Pandapas Pond, Giles County, VA, where a "Water Garden" is created on the open space defined by its water. Formally, the whole garden complex takes the inspiration from lotus flowers floating on the water, which could be thought of as an "organic system of architecture."
Master of Architecture

APA, Harvard, Vancouver, ISO, and other styles

10

Dansereau, Ginette. "Essai sur la structure de L'offrande I de Serge Garant." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65548.

Full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Books on the topic "Garnet structure"

1

LaHay, Bill. Garden structures. Edited by McKinley Michael. Des Moines, Iowa: Meredith Books, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Wiles, Richard. Garden structures. London: Mitchell Beazley, 1992.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

LaHay, Bill. Garden structures. Edited by McKinley Michael. Des Moines, Iowa: Meredith Books, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

Books, Time-Life, ed. Outdoor structures. Alexandria, Va: Time-Life Books, 1996.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

Morgan, Deborah. How to build outdoor structures. New York: Sterling Pub. Co., 1987.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

Edwards, A. R. Defects and diffusion in garnet structured silicates. Manchester: UMIST, 1991.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

Outdoor structures. Emmaus, Pa: Rodale Press, 1990.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

McBride, Scott. Building outdoor structures. Newtown, CT: Taunton, 2007.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

9

Mark, Johanson, and Marshall Chris, eds. Landscape Structures & Decks. Minnetonka, Minn: Handyman Club of America, 1998.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

10

Webersinn, John D. Creative garden settings. Blue Ridge Summit, PA: TAB BOOKS, 1992.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Book chapters on the topic "Garnet structure"

1

Lagomarsino, S. "Structural Studies of Garnet Films." In X-Ray and Neutron Structure Analysis in Materials Science, 261–72. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0767-9_37.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Tratsiak, Y. U., T. Anniyev, D. Agrawal, M. Vasilyev, and V. Khabashesku. "Scintillation Materials with Disordered Garnet Structure for Novel Scintillation Detectors." In Springer Proceedings in Physics, 75–81. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-21970-3_6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Hosokawa, Saburo, Yusuke Tanaka, Shinji Iwamoto, and Masashi Inoue. "Structure of Yttrium Aluminium Garnet Obtained by the Glycothermal Method." In Advances in Science and Technology, 691–96. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908158-01-x.691.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Quagliano, John R. "Electronic Energy Level Structure of Er3+ Doped into 3 Garnet Hosts." In NATO ASI Series, 605. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4899-1190-2_49.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Campbell, Geoffrey H., and Wayne E. King. "Atomic Structure of the ∑5 (210)/[001] Symmetric Tilt Grain Boundary in Yttrium Aluminum Garnet." In Ceramic Microstructures, 161–68. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5393-9_13.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Golovkina, L. S., A. I. Orlova, А. V. Nokhrin, M. S. Boldin, E. A. Lantsev, and V. N. Chuvil’deev. "Spark Plasma Sintering of Fine-Grain Ceramic–Metal Composites Based on Garnet-Structure Oxide Y2.5Nd0.5Al5O12 with Mo, W, and Ni." In Spark Plasma Sintering of Materials, 459–70. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05327-7_15.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Bala, Anu, and Suman Rani. "Garnet: Structural and Optical Properties." In Lecture Notes in Mechanical Engineering, 365–71. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-4147-4_37.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Chen, Y. "Thermal Effects of Nd PL Spectra in Garnet Hosts." In Spectroscopy of Systems with Spatially Confined Structures, 718. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0287-5_49.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Benfield, Richard W. "Introduction: philosophy of New Directions in Garden Tourism." In New directions in garden tourism, 1–15. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789241761.0001.

Full text

Abstract:

Abstract This introductory chapter reviews the current state of research in garden tourism before describing the structure of the book. It also highlights some recent garden openings, new garden audiences, and new initiatives and new uses in existing gardens. A case study is presented of the Missouri Botanical Garden as an example of one garden that is combining new initiatives to attract visitors.

APA, Harvard, Vancouver, ISO, and other styles

10

Warden, Claire. "Structure: The Fragmented and the Episodic." In British Avant-Garde Theatre, 22–54. London: Palgrave Macmillan UK, 2012. http://dx.doi.org/10.1057/9781137020697_2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Garnet structure"

1

Kano, H., K. Shono, S. Kuroda, N. Koshino, and S. Ogawa. "Optimized structure of sputtered garnet disk." In International Magnetics Conference. IEEE, 1989. http://dx.doi.org/10.1109/intmag.1989.690157.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Kolachevsky, N. N., and N. N. Yatsenko. "Slow Fluctuation Processes In The Domain Structure of Garnet Films." In 1993 Digests of International Magnetics Conference. IEEE, 1993. http://dx.doi.org/10.1109/intmag.1993.642041.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Naidu, S. Asiri, and Hansnath Tiwari. "Eu3+ luminescence – A local structural probe in Li5La3M2O12 (M = Nb, Ta) with garnet structure." In NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0060894.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Ying, Chong Ho, Mohd Sobri Idris, Siti Nur Adlina Norazman, Nazerah Yaacob, Rozana Aina Maulat Osman, Mogalahalli Venkatesh Reddy, and Nor Zachy Fernandez. "Structural Analysis and Electrical Properties of Li<sub>7</sub>La<sub>3</sub>Ce<sub>2</sub>O<sub>12</sub> as a Solid Electrolyte for all Solid-State Lithium-Ion Batteries." In International Conference on Advancement of Materials, Manufacturing and Devices 2021. Switzerland: Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/p-7p6ol2.

Full text

Abstract:

A single-phase of Li7La3Ce2O12 samples that formed garnet-type crystal structure were prepared using the conventional solid-state method. Li7La3Ce2O12 formed a tetragonal garnet-type structure with the space group of I4/mmm. Impedance spectroscopy data show that Li7La3Ce2O12 can be classified as the ionic conductor as it has a mixture of ionic and electronic conductivities. Their electrical conductivities also obey Jonscher universal power law.

APA, Harvard, Vancouver, ISO, and other styles

5

Modi, K. B., P. U. Sharma, V. K. Lakhani, N. H. Vasoya, K. G. Saija, T. K. Pathak, and K. B. Zankat. "Structure-substitution limit correlation study on Cr3+ substituted polycrystalline yttrium iron garnet." In INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015): Proceeding of International Conference on Condensed Matter and Applied Physics. Author(s), 2016. http://dx.doi.org/10.1063/1.4946491.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Yaacob, Nazerah, Siti Nur Adlina Norazman, Rozana Aina Maulat Osman, Mohd Sobri Idris, and Ku Noor Dhaniah Ku Muhsen. "Synthesis and characterization on garnet-type structure Li7La3Ce2O12 and its electrical properties." In PROCEEDINGS OF 8TH INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS ENGINEERING & TECHNOLOGY (ICAMET 2020). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0051860.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Chráska, P., K. Neufuss, B. Kolman, and J. Dubsky. "Plasma Spraying of Silicates." In ITSC 1997, edited by C. C. Berndt. ASM International, 1997. http://dx.doi.org/10.31399/asm.cp.itsc1997p0477.

Full text

Abstract:

Abstract A search for cheap spraying materials offering interesting properties is conducted in connection with utilization of the high throughput water stabilized plasma. In this regard very promising materials are silicates. WSP PAL 160 was used for spraying garnets in their natural form and fused and crushed basalt. Chemical composition of both these materials is based generally on the same components but their contents are different. Paper reports on the spraying parameters used and then describes the structure and phase composition of deposits as well as their selected properties. Garnet of almandine type can be sprayed very well at a wide variety of parameters while pyrope type spraying is more difficult. Very interesting coatings were made of basalt.

APA, Harvard, Vancouver, ISO, and other styles

8

Zhang, Hui, Yaxue Jin, Hongji Qi, Mingyan Pan, Maodong Zhu, Hetong Han, and Zhaohui Song. "Structure, luminescence and scintillation characteristics of Yb, Na, Ba-codoped yttrium-aluminum garnet." In Advanced Laser Technology and Applications, edited by Shibin Jiang, Lijun Wang, Zejin Liu, Pu Zhou, and Wei Shi. SPIE, 2018. http://dx.doi.org/10.1117/12.2502001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Zhang, Si J., H. W. Zhang, X. Y. Guo, Feng P. Zhang, C. L. Xu, B. J. Guo, Dimin Luo, and Z. Y. Zhong. "New method to improve the structure and magneto-optical properties of bismuth garnet films." In Optical Storage: Third International Symposium, edited by Fuxi Gan. SPIE, 1993. http://dx.doi.org/10.1117/12.150645.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Snachev, V. I. "ON THE HISTORY OF THE FORMATION OF THE TASH-YARSKY PYRITE-POLYMETALLIC DEPOSIT (SOUTH URALS)." In Проблемы минералогии, петрографии и металлогении. Научные чтения памяти П. Н. Чирвинского. Пермский государственный национальный исследовательский университет, 2021. http://dx.doi.org/10.17072/chirvinsky.2021.229.

Full text

Abstract:

The article considers the geological structure of the Tash-Yarsky pyritepolymetallic deposit located in the northern part of the Magnitogorsky megazone near the large (about 300 km2) Akhunovsky granite massif. The petrographic study of the hornfelses made it possible to identify a number of mineral parageneses containing cordierite, garnet, and biotite, which are installed respectively from the massif contact at a distance no further than 0,6–0,8; 1,2–1,5 and 2,3–2,5 km. Based on the temperature dependence of the maximum iron content of sphalerite, high temperatures of metamorphism (500–610 °С) were obtained for ores. According to garnet-biotite and garnet-cordierite thermobarometers for rocks close to the massif, the transformation temperature is 720–750 °С, and the pressure is 8,9–9,1 kbar. With a distance of 700–850 m from the contact of granitoids, the temperature does not exceed 620–640 °C, and the pressure is 5,3–5,4 kbar; at a distance of 1,3 km, respectively — 550–560 °C and 4,6–4,7 kbar.

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Garnet structure"

1

Nikam, Jaee. Gaps, challenges and drivers for environmentally sustainable textile and garment manufacturing in India. Stockholm Environment Institute, May 2023. http://dx.doi.org/10.51414/sei2023.033.

Full text

Abstract:

This paper provides an overview of the country’s manufacturing value chain of textiles and garments, and the status of sustainable manufacturing throughout these so-called upstream processes, from raw material procurement to ready-made garment production. After outlining the regulatory structure that influences the upstream textile and garments value chain in India, the author explores the challenges and drivers faced by textile manufacturers in India, along with providing policy suggestions and highlighting the opportunities for sustainable transitions.

APA, Harvard, Vancouver, ISO, and other styles

2

Tella, S., U. Mader, and M. Schau. Geology and structure of the Barbour Bay region, District of Keewatin, Northwest Territories, and its potential for industrial garnets. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1995. http://dx.doi.org/10.4095/202902.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Floyd, Jason, and Daniel Madrzykowski. Analysis of a Near Miss in a Garden Apartment Fire – Georgia 2022. UL's Fire Safety Research Institute, October 2022. http://dx.doi.org/10.54206/102376/rsfd6862.

Full text

Abstract:

On February 9, 2022, Cobb County Fire and Emergency Services responded to a fire in a ground floor unit in a garden apartment building. At arrival, the fire was a post-flashover fire in a bedroom. Initial fire control was attempted by an interior fire attack team which was unable to quickly locate the fire. Exterior suppression through the bedroom window was started prior to discovery of the fire by the interior team. Shortly after fire discovery by the internal team, a mayday was called. Four firefighters from the interior fire attack team received first and second degree burns. This report analyzes photographic, video, and written documentation from the incident to evaluate the timeline of the incident and to assess the fire conditions present. Computer modeling using the Fire Dynamics Simulator (FDS) was performed to provide further insight into the fire conditions and the impact of decisions and actions on the fire ground. Additionally, data from a full scale fire test of a similar fire in a similar structure was used to provide additional insight. Four FDS simulations were performed in support of the analysis. These included a simulation of the event as it unfolded and three simulations looking at the impact of alternate tactics which included: initial exterior attack prior to entry, the use of a smoke curtain to protect the building exit path, and interior only attack. FDS simulations provided insight on the heat present in the apartment during the fire and the impact of the interior and exterior suppression on conditions inside the apartment. Full scale test data of a similar fire showed similar behavior to the FDS predictions and gives credence to the FDS results. Results of the analysis suggest that injuries resulted from the length of time the interior attack team was present inside the apartment before actions were taken to reduce the severity of the fire. Six contributing factors were identified including size-up, communication and accountability, delayed exterior attack, lack of entry hall protection, the apartment layout and construction, thermal imager use, and mayday procedures and training. The last contributing factor was a positive contribution that helped avoid more serious injuries. Based on the contributing factors, five recommendations were made that include improved size-up, exterior fire control to prevent exterior spread, protection of exit pathways, basing fire ground tactics on known information, and recognizing when a change in tactics is needed.

APA, Harvard, Vancouver, ISO, and other styles

4

Stakes, Keith, Keith Stakes, Julie Bryant, Nick Dow, Jack Regan, and Craig Weinschenk. Analysis of the Coordination of Suppression and Ventilation in Multi-Family Dwellings. UL Firefighter Safety Research Institute, June 2020. http://dx.doi.org/10.54206/102376/ympj4047.

Full text

Abstract:

The majority of the existing full-scale fire service research studied the impact of tactics on the residential fireground, specifically in single-family structures. This study builds upon prior research by conducting thirteen experiments in three-story, multi-family dwellings to quantify the impact of coordination between ventilation and suppression actions. Experiments were conducted in four, garden-style apartment buildings; each of which had two lower-level units, four first-floor units, and four second-floor units. The apartments shared a common stairwell that was enclosed for all of the experiments in this study. To examine the effectiveness of tactics in the fire apartment, common stairwell and applicable exposure apartments, four experiments were conducted in lower-level apartments, seven were conducted in first-floor apartments, and two were conducted in second-floor apartments including both bedroom and kitchen/living room fires. The fire size varied based on the amount of initial ventilation provided. The main control variables included the location of initial water application, the ventilation method, and the timing of ventilation relative to water application. The suppression tactics included interior water application, exterior water application followed by interior water application, and a combined interior and exterior water application. The ventilation tactics examined in these experiments included horizontal, vertical, positive pressure, and hydraulic ventilation. Similar to previous experiments in acquired single-family structures, there was no meaningful increase in temperature outside of fire rooms when ventilation tactics were executed in close coordination with (shortly after or shortly before) the onset of suppression. In contrast, for experiments where ventilation occurred with delayed suppression, temperature exposures increased throughout the fire apartment, and in experiments where the apartment door was left open, temperatures and carbon monoxide exposures increased throughout the common stairwell. Suppression actions, whether interior or exterior, resulted in a decrease in temperatures and gas concentrations at locations where occupants may potentially be located. The enclosed common stairwell, a unique feature of this experimental series, acted as capture of combustion products. Opening the apartment door to gain access should be thought of as an important ventilation action, both in terms of its potential to cause fire growth and its potential for smoke movement into the stairwell, limiting the egress for potentially trapped occupants in exposure units. Tactics such as door control, positive pressure ventilation, and hydraulic ventilation which were used both simultaneous with and sequentially post-suppression were shown to limit gas flows into the stairwell. After effective suppression, structure ventilation operations should similarly be cognizant of gas flows, with the aim of establishing flow throughout all areas where occupants may be located.

APA, Harvard, Vancouver, ISO, and other styles

5

Prysyazhnyi, Mykhaylo. UNIQUE, BUT UNCOMPLETED PROJECTS (FROM HISTORY OF THE UKRAINIAN EMIGRANT PRESS). Ivan Franko National University of Lviv, March 2021. http://dx.doi.org/10.30970/vjo.2021.50.11093.

Full text

Abstract:

In the article investigational three magazines which went out after Second World war in Germany and Austria in the environment of the Ukrainian emigrants, is «Theater» (edition of association of artists of the Ukrainian stage), «Student flag» (a magazine of the Ukrainian academic young people is in Austria), «Young friends» (a plastoviy magazine is for senior children and youth). The thematic structure of magazines, which is inferior the association of different on age, is considered, by vital experience and professional orientation of people in the conditions of the forced emigration, paid regard to graphic registration of magazines, which, without regard to absence of the proper publisher-polydiene bases, marked structuralness and expressiveness. A repertoire of periodicals of Ukrainian migration is in the American, English and French areas of occupation of Germany and Austria after Second world war, which consists of 200 names, strikes the tipologichnoy vseokhopnistyu and testifies to the high intellectual level of the moved persons, desire of yaknaynovishe, to realize the considerable potential in new terms with hope on transference of the purchased experience to Ukraine. On ruins of Europe for two-three years the network of the press, which could be proud of the European state is separately taken, is created. Different was a period of their appearance: from odnogo-dvokh there are to a few hundred numbers, that it is related to intensive migration of Ukrainians to the USA, Canada, countries of South America, Australia. But indisputable is a fact of forming of conceptions of newspapers and magazines, which it follows to study, doslidzhuvati and adjust them to present Ukrainian realities. Here not superfluous will be an example of a few editions on the thematic range of which the names – «Plastun» specify, «Skob», «Mali druzi», «Sonechko», «Yunackiy shliah», «Iyzhak», «Lys Mykyta» (satire, humour), «Literaturna gazeta», «Ukraina і svit», «Ridne slovo», «Hrystyianskyi shliah», «Golos derzhavnyka», «Ukrainskyi samostiynyk», «Gart», «Zmag» (sport), «Litopys politviaznia», «Ukrains’ka shkola», «Torgivlia i promysel», «Gospodars’ko-kooperatyvne zhyttia», «Ukrainskyi gospodar», «Ukrainskyi esperantist», «Radiotehnik», «Politviazen’», «Ukrainskyi selianyn» Considering three riznovektorni magazines «Teatr» (edition of Association Mistciv the Ukrainian Stage), «Studentskyi prapor» (a magazine of the Ukrainian academic young people is in Austria), «Yuni druzi» (a plastoviy magazine is for senior children and youth) assert that maintenance all three magazines directed on creation of different on age and by the professional orientation of national associations for achievement of the unique purpose – cherishing and maintainance of environments of ukrainstva, identity, in the conditions of strange land. Without regard to unfavorable publisher-polydiene possibilities, absence of financial support and proper encouragement, release, followed the intensive necessity of concentration of efforts for achievement of primary purpose – receipt and re-erecting of the Ukrainian State.

APA, Harvard, Vancouver, ISO, and other styles

6

Gruson-Daniel, Célya, and Maya Anderson-González. Étude exploratoire sur la « recherche sur la recherche » : acteurs et approches. Ministère de l'enseignement supérieur et de la recherche, November 2021. http://dx.doi.org/10.52949/24.

Full text

Abstract:

• Introduction Dans le cadre du deuxième Plan National de la Science Ouverte, le Comité pour la science ouverte a souhaité mener une étude pour la préfiguration d’un Lab de la science ouverte (LabSO) afin de mieux comprendre le périmètre de la recherche sur la recherche (research on research) dans un contexte international. • Objectifs de l’étude : L’étude répond ainsi à trois objectifs : 1. repérer des grands courants de recherche sur la recherche (RoR) dans le paysage plus général de la recherche universitaire en Europe et outre-atlantique, en reconnaître les principaux acteurs institutionnels et différencier les approches mobilisées par les uns et les autres ; 2. proposer une méthodologie d’analyse dans une démarche de science ouverte (méthodes mixtes et cartographie numérique) pour faciliter l’appropriation de son contenu ; 3. émettre des recommandations pour faciliter le positionnement du LabSO et s’inspirer d’initiatives existantes. • Méthodologie Une série de treize entretiens et une collecte de données d’une sélection thématique de sites web ont permis de dresser un paysage d’acteurs et d’approches impliqués dans des recherches sur la recherche. Ce dernier s’est nourri d’une démarche de cartographie numérique pour repérer et visualiser les liens existants entre différentes communautés, mouvements, réseaux et initiatives (financeurs, projets, centres de recherche, fournisseurs de données, éditeurs, etc.). • Résultats Le rapport présente différents courants de « recherche sur la recherche » issus des traditions théoriques et méthodologiques de la sociologie, de l’économie, des sciences politiques, de la philosophie, des sciences de l’information et des mesures (biblio/scientométrie). Des courants plus récents sont aussi décrits. Ils s’inscrivent dans un contexte de politiques publiques favorables à la science ouverte et ont émergé dans le champ des sciences sociales computationnelles, des Big Data ou encore des domaines biomédicaux. Si certaines de ces approches s’appuient sur des courants académiques (STS, sciences des mesures) établis depuis de nombreuses décennies, d’autres comme ceux de la « métascience » ou de la « science de la science », se sont structurées plus récemment avec une visée prescriptive et de changement fondé sur des preuves (evidence-based) se basant sur un engagement normatif pour une science plus ouverte, inclusive et diverse. Bien loin d’un paysage statique, l’étude fait ressortir des recherches en mouvement, des débats tout autant que des mises en garde afin que certains courants « ne réinventent pas la roue » en faisant fit d’une longue tradition académique de l’étude des sciences et de la production scientifiques. De nouvelles alliances entre centres de recherche et laboratoires, institutions subventionnaires, décideurs politiques et fournisseurs de données ont été repérées. Elles participent à une dynamique actuelle d’équipement des politiques publiques par des outils d’évaluation et des protocoles de recherche pour guider les actions menées, on parle d’évidence-based policies. Un des exemples les plus récents étant laa seconde feuille de route du RoRI1 poussant notamment à la formation d’un réseau international d’instituts de recherche sur la recherche, fondé sur le partage et la mutualisation de données, de méthodes et d’outils. Outre la présentation de ces différents acteurs et courants, le rapport pointe le rôle joué par les infrastructures et les fournisseurs de données scientifiques (publications, données, métadonnées, citations, etc.) dans la structuration de ce paysage et les équilibres à trouver. • Recommandations 1. Accompagner la construction d’indicateurs et de métriques par le biais d’un regard critique et de discussions collectives pour mesurer leurs impacts sur les comportements des professionnels de la recherche (mésusages, gaming). 2. Porter attention aux étapes de diffusion des résultats scientifiques issus des « recherches sur la recherche » pour les adapter aux différents publics ciblés (chercheurs, responsables des politiques publiques de recherche, journalistes, etc.). 3. Articuler les travaux de « recherche sur la recherche » avec une démarche de science ouverte en questionnant notamment les choix faits concernant les fournisseurs de données, les infrastructures et outils d’évaluation, de découvrabilité et d’analyse de la production scientifique (gouvernance, utilisation des données, etc.). 4. Soutenir les approches thématiques et transversales plutôt que disciplinaire de manière collaborative entre les différents membres du Lab de la science ouverte et aider le dialogue entre les différentes approches et mouvements (STS, research on research, science of science, scientométrie, etc.)

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!