Bibliographies thématiques / Diagrammes de Diamond

Littérature scientifique sur le sujet « Diagrammes de Diamond »

Auteur : Grafiati
Publié le 13 juillet 2024

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Articles de revues sur le sujet "Diagrammes de Diamond"

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Breuil, Christophe. « Diagrammes de Diamond et (φ, Γ)-modules ». Israel Journal of Mathematics 182, no 1 (mars 2011) : 349–82. http://dx.doi.org/10.1007/s11856-011-0035-3.

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Hu, Yongquan. « Valeurs spéciales de paramètres de diagrammes de Diamond ». Bulletin de la Société ; mathématique de France 144, no 1 (2016) : 77–115. http://dx.doi.org/10.24033/bsmf.2707.

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Nefedov, Yuriy Viktorovich, et Igor Vyacheslavovich Klepikov. « Occurrence Regularities of Nitrogen Defects in the Ural Type Crystal Diamonds from Different Regions ». Key Engineering Materials 769 (avril 2018) : 201–6. http://dx.doi.org/10.4028/www.scientific.net/kem.769.201.

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The collection of the Ural, Anabar and Brazilian diamonds is studied by infrared spectrometry method. For the reconstruction of the thermal formation conditions of diamond crystals, V. Taylor’s diagrams are made with the calculated isotherms. Graphs of the ratio of B1 and B2 defects are drawn. Conclusions about the thermal conditions of the Ural diamonds formation and their possible affinity to the specific and type of indigenous sources are made.
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Litvin, Yu A., et A. V. Spivak. « Genesis of diamonds and paragenetic inclusions under lower mantle conditions : the liquidus structure of the parental system at 26 GPa ». Геохимия 64, no 2 (15 mars 2019) : 128–44. http://dx.doi.org/10.31857/s0016-7525642128-144.

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The patterns of the joint genesis of diamonds, and their paragenetic inclusions under lower-mantle conditions, are controlled by the liquidus melting conditions of the multicomponent diamond-forming system. The boundary compositions of this system are evident from the generalized data produced by the analytical mineralogy of paragenetic inclusions in lower-mantle diamonds. We studied the structure of the liquidus of a theoretical diamond-forming system in a physicochemical experiment with P–T parameters typical of the depths of 670–800 km. The compositions of the parental melts/solutions for diamonds and paragenetic inclusions correspond to the multicomponent system MgO–FeO–СаО–SiO2–MgCO3–FeCO3–CaCO3–Na2CO3–C. Its primary melting ёwas controlled by the peritectic phase relations at the solidus, which was revealed by experimental studies of polythermal sections of the system and their phase diagrams. Of key importance is the effect of the “stishovite paradox,” in which the peritectic reaction between the ultrabasic bridgmanite phase and melt coincides with the formation of basic oxide associations of periclase–wustite solid solutions and stishovite. The peritectic reaction of bridgmanite is a fundamental feature of the diamond-forming system, and it determines the major defining characteristics in its liquidus structure. Elements of the peritectic liquidus provide the physicochemical basis for the evolution of growth melts that yield diamonds and their paragenetic minerals. On the basis of the experimental results, we constructed a fractional diagram of the syngenesis of diamonds and inclusions. It clearly illustrates the solution–melt mechanism by which diamond genesis occurs, as well as the sequence of growth trapping of primary inclusions by diamonds under the lower-mantle conditions. The physicochemical factors of the genesis of diamonds and their primary inclusions agree: they are generalized in a compositional diagram of lower-mantle diamond-forming media, and they provide a natural basis for the genetic classification of inclusions of rock-forming and accessory minerals in diamonds.
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Wang, Ji-Tao, Yong-Zhong Wan, David Wei Zhang, Zhi-Jie Liu et Zhong-Qiang Huang. « Calculated phase diagrams for activated low pressure diamond growth from C–H, C–O, and C–H–O systems ». Journal of Materials Research 12, no 12 (décembre 1997) : 3250–53. http://dx.doi.org/10.1557/jmr.1997.0426.

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Three-dimensional temperature (T)–pressure (P)–composition (X) phase diagrams of binary carbon-hydrogen (C–H) and carbon-oxygen (C–O) systems for activated low pressure diamond growth have been calculated. Based on an approximation of linear combination between C–H and C–O systems, a projective ternary carbonhydrogen-oxygen (C–H–O) phase diagram has also been obtained. There is always a diamond growth region in each of these phase diagrams. Once a supply of external activating energy stops, the diamond growth region will not exist. Nearly all of the reliable experimental data reported in the literature drop into the possible diamond growth region of the calculated projective ternary C–H–O phase diagram under the conditions of 0.01–100 kPa and above 700 K.
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Turkevich, V. Z. « Phase Diagrams and Synthesis of Diamond ». High Pressure Research 22, no 3-4 (janvier 2002) : 525–29. http://dx.doi.org/10.1080/08957950212426.

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Qiu, Tianxu, Jianwei Feng, Bo Cai, Guojiang Fan, Wei Zhang et Yong Liu. « Microstructural Evolution of Diamond-Based Composites at High Temperature and High Pressure ». Materials 15, no 24 (8 décembre 2022) : 8753. http://dx.doi.org/10.3390/ma15248753.

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Improving the toughness of diamond composites has become an industrial demand. In this work, Co50Ni40Fe10 multi-element alloy was designed as binder for diamond-based composites prepared by high temperature and high pressure (HTHP). Two methods of mixing-sintering and infiltration-sintering were used to prepare diamond-based composites with different diamond contents. The phase diagrams of Co-C and Co50Ni40Fe10-C at 6 GPa were calculated by Thermo-Calc. The results show that Co50Ni40Fe10 multi-element alloy promotes the sintering of diamond powder than element Co. The transverse rupture strength (TRS) of sintered diamond with Co50Ni40Fe10 (Co50Ni40Fe10-75 vol% diamond) is higher than that of Co-Comp (Co-75 vol% diamond). The TRS of polycrystalline diamond (PCD) with Co50Ni40Fe10 alloy binder is up to 1360.3 MPa, which is 19.2% higher than Co-PCD. Compared with Co, using Co50Ni40Fe10 as binder results in a less metal residue in PCD, while the metal cluster area is smaller and the metal distribution is more uniform.
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Wang, Ji-Tao, Yong-Zhong Wan, Zhi-Jie Liu, Hao Wang, David Wei Zhang et Zhong-Qiang Huang. « Phase diagrams for activated CVD diamond growth ». Materials Letters 33, no 5-6 (janvier 1998) : 311–14. http://dx.doi.org/10.1016/s0167-577x(97)00123-7.

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Czelej, Kamil, et Piotr Śpiewak. « Hydrogen passivation of vacancies in diamond : Electronic structure and stability from ab initio calculations ». MRS Advances 2, no 5 (2017) : 309–14. http://dx.doi.org/10.1557/adv.2017.100.

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ABSTRACTPoint defects in diamond such as vacancies act as a strong donor compensation center; therefore, remarkably reduce electron conductivity of diamond-based devices. Artificial synthesis methods of n-type diamond utilize the hydrogen-containing precursors enabling its diffusion into diamond crystal and subsequent formation of hydrogen-vacancy complexes. Here we employ spin-polarized, hybrid density functional theory calculations, in order to characterize the electronic properties and stability of hydrogen-passivated vacancies in diamond. We found strong thermodynamic preference for hydrogen passivation of four vacancy-related dangling bonds. An analysis of formation energy vs Fermi level diagrams indicate, that strong donor compensation effect associated with vacancies can be entirely neutralized by hydrogen incorporation. Thus, a careful control of hydrogen partial pressure in the growth process might be crucial to improve the electron conductivity of n-type diamond.
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Fang, Jiaqi, Zhen Feng et Bo Cai. « DrawnNet : Offline Hand-Drawn Diagram Recognition Based on Keypoint Prediction of Aggregating Geometric Characteristics ». Entropy 24, no 3 (19 mars 2022) : 425. http://dx.doi.org/10.3390/e24030425.

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Offline hand-drawn diagram recognition is concerned with digitizing diagrams sketched on paper or whiteboard to enable further editing. Some existing models can identify the individual objects like arrows and symbols, but they become involved in the dilemma of being unable to understand a diagram’s structure. Such a shortage may be inconvenient to digitalization or reconstruction of a diagram from its hand-drawn version. Other methods can accomplish this goal, but they live on stroke temporary information and time-consuming post-processing, which somehow hinders the practicability of these methods. Recently, Convolutional Neural Networks (CNN) have been proved that they perform the state-of-the-art across many visual tasks. In this paper, we propose DrawnNet, a unified CNN-based keypoint-based detector, for recognizing individual symbols and understanding the structure of offline hand-drawn diagrams. DrawnNet is designed upon CornerNet with extensions of two novel keypoint pooling modules which serve to extract and aggregate geometric characteristics existing in polygonal contours such as rectangle, square, and diamond within hand-drawn diagrams, and an arrow orientation prediction branch which aims to predict which direction an arrow points to through predicting arrow keypoints. We conducted wide experiments on public diagram benchmarks to evaluate our proposed method. Results show that DrawnNet achieves 2.4%, 2.3%, and 1.7% recognition rate improvements compared with the state-of-the-art methods across benchmarks of FC-A, FC-B, and FA, respectively, outperforming existing diagram recognition systems on each metric. Ablation study reveals that our proposed method can effectively enable hand-drawn diagram recognition.
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Thèses sur le sujet "Diagrammes de Diamond"

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Bozzolo, Nathalie. « Contribution de la microscopie électronique en transmission analytique à la caractérisation du diamant CVD ». Vandoeuvre-les-Nancy, INPL, 1996. http://docnum.univ-lorraine.fr/public/INPL_T_1996_BOZZOLO_N.pdf.

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Nos travaux se situent dans le contexte de la caractérisation de la qualité cristalline des films de diamant élaborés par MPCVD sur silicium monocristallin. Nous étudions plus particulièrement, par MET et EELS, la répartition des défauts plans (fautes d'empilement, joints de macles et micromacles) dans les cristaux constituant les films, ainsi que leurs effets sur les clichés de diffraction électronique et sur les spectres de pertes d'énergie. Un soin particulier est apporté à la préparation de lames minces. Des dégâts d'irradiation sont mis en évidence et caractérisés dans le cas des lames amincies par bombardement ionique. L’examen de plusieurs films de microstructures différentes permet de déterminer les conditions d'élimination des défauts plans. Il existe une relation entre la présence défauts plans et le type de faces délimitant les cristaux, que nous avons vérifié pour différentes morphologies cristallines. Cette relation induit une corrélation entre la distribution spatiale des défauts plans et l'évolution de la microstructure en cours de croissance. Les défauts plans se forment uniquement au cours de la croissance suivant les faces 111. Les films textures <100> dont la surface est majoritairement constituée de facettes 100 présentent une qualité cristalline supérieure à toute autre texture. Cette tendance est d'autant plus marquée que l'épaisseur des films considérés est importante. La qualité cristalline la plus élevée que nous ayons observée correspond aux films hautement orientés sur Si(100) pour lesquelles les défauts plans disparaissent totalement des cristaux à partir d'une certaine épaisseur. Cette épaisseur critique correspond au moment ou les faces 100 externes se sont rejointes en cours de croissance. Cette étude nous a conduit à concevoir un programme de simulation des clichés de diffraction. La présence de défauts plans induit des effets spécifiques sur les clichés de diffraction électronique, qui peuvent être simulés grâce à ce programme, et qui sont mis à profit pour localiser des défauts. Une modification de la structure de bande du diamant liée à la présence des défauts est mise en évidence par EELS
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Livres sur le sujet "Diagrammes de Diamond"

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Incorporated, Baseball Development. Making baseball and softball fields safe and playable : A complete instructional guide for building and maintaining ball diamonds : includes large diagrams with layouts & measurements and detailed information on each section of the field. Birmingham, MI : Baseball Development, 1995.

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Zminda, Don, Oscar A. Palacios, Inc STATS et Oscar Palacios. Ballpark Sourcebook : Diamond Diagrams. 2e éd. STATS Publishing Inc, 1998.

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Clarke, Sandra, et Sarah Greer. Land Law Directions. Oxford University Press, 2020. http://dx.doi.org/10.1093/he/9780198839811.001.0001.

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Land Law Directions provides engaging and straightforward explanations of difficult concepts. Case summaries, photographs, and examples are used throughout to provide real-life context and to clarify abstract ideas, while diagrams and definitions ensure the text is easy to follow and that key points are understood. The book provides a full range of resources designed to help build upon and further existing understanding, including thinking points, end of chapter questions, and tips on linking topics together. A final chapter pulls together key details from each chapter, showing how topics link together and apply to a fictional piece of land. An additional separate chapter focuses on preparing for exams, offering advice on approaching assessment questions and revision technique. This edition includes an extended chapter on proprietary estoppel, and consolidation of the law on land registration into one chapter (4). New cases covered include The Supreme Court decision in Regency Villas Title Ltd v Diamond Resorts (Europe) Ltd [2018] UKSC 57, which has cast new light on what can constitute an easement.
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Clarke, Sandra, et Sarah Greer. Land Law Directions. 8e éd. Oxford University Press, 2022. http://dx.doi.org/10.1093/he/9780192856937.001.0001.

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Land Law Directions provides engaging and straightforward explanations of difficult concepts. Case summaries, photographs, and examples are used throughout to provide real-life context and to clarify abstract ideas, while diagrams and definitions ensure the text is easy to follow and that key points are understood. The book provides a full range of resources designed to help build upon and further existing understanding, including thinking points, end-of-chapter questions, and tips on linking topics together. A final chapter pulls together key details from each chapter, showing how topics link together and apply to a fictional piece of land. An additional separate chapter focuses on preparing for exams, offering advice on approaching assessment questions and revision technique. This edition includes an extended chapter on proprietary estoppel, and consolidation of the law on land registration into one chapter (4). New cases covered include the Supreme Court decision in Regency Villas Title Ltd v. Diamond Resorts (Europe) Ltd [2018] UKSC 57, which has cast new light on what can constitute an easement.
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Clarke, Sandra, et Sarah Greer. Land Law Directions. Oxford University Press, 2018. http://dx.doi.org/10.1093/he/9780198809555.001.0001.

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Land Law Directions provides engaging and straightforward explanations of difficult concepts. Case summaries, photographs, and examples are used throughout to provide real-life context and to clarify abstract ideas, while diagrams and definitions ensure the text is easy to follow and that key points are understood. The book provides a full range of resources designed to help build upon and further existing understanding, including thinking points, end of chapter questions, and tips on linking topics together. A final chapter pulls together key details from each chapter, showing how topics link together and apply to a fictional piece of land. An additional separate chapter focuses on preparing for exams, offering advice on approaching assessment questions and revision technique. This edition includes a new chapter on proprietary estoppel, and consolidation of the law on land registration into one chapter (4). New cases covered include Regency Villas Title Ltd v Diamond Resorts (Europe) Ltd [2017] EWCA Civ 238; [2017] 2 P & CR DG8 (CA (Civ Div)) on rights of recreation as easements which pass with the land to each successive owner; Gore v Naheed & Ahmed [2017] EWCA Civ 369, which considered the old rule in Harris v Flower in relation to easements of way; Smith v Molyneaux [2016] UKPC 35 on unilateral permission/licences in adverse possession.
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Chapitres de livres sur le sujet "Diagrammes de Diamond"

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« Phase Diagrams of Carbon and Metals ». Dans Diamond Films, 304–8. Elsevier, 2005. http://dx.doi.org/10.1016/b978-008044723-0/50021-0.

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Eremets, M. I. « Diamond-Indenter Cells ». Dans High Pressure Experimental Methods, 93–104. Oxford University PressOxford, 1996. http://dx.doi.org/10.1093/oso/9780198562696.003.0004.

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Abstract However, the traditional cell with one rounded cone and a plane is of interest, primarily because of simplicity of construction and importance for study of contact phenomena. This cell has narrower but important fields of application, such as the study of phase transitions, Fig.1.18. The presence of shear stresses in an ungasketed sample helps to localize the boundaries of phase diagrams as in the shear deformation cell, Chapter 5.
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McKenzie, Ross H. « A multitude of states of matter ». Dans Condensed Matter Physics : A Very Short Introduction, 14—C2.F4. Oxford University PressOxford, 2023. http://dx.doi.org/10.1093/actrade/9780198845423.003.0002.

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Abstract There are ‘a multitude of states of matter’. Materials composed of just one or two types of atoms can form many different states of matter. Each state has qualitatively different physical properties. Transitions between distinct states are tipping points and are defined by abrupt changes in properties. Dramatic examples include superconductivity and superfluidity. Phase diagrams encode which state of a material is stable under specific conditions defined by variables such as temperature and pressure. The phase diagrams of water, carbon dioxide, and carbon are discussed to illustrate key ideas in condensed matter physics and its industrial relevance. At the critical point there is no distinction between liquid and gas. Sublimation involves a direct transition between solid and gas states. Topics discussed are relevant to making artificial diamonds, freeze-dried food, decaffeinated coffee, and dry ice.
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Actes de conférences sur le sujet "Diagrammes de Diamond"

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Sardenberg, Victor, et Mirco Becker. « Aesthetic Measure of Architectural Photography utilizing Computer Vision : Parts-from-Wholes ». Dans Design Computation Input/Output 2022. Design Computation, 2022. http://dx.doi.org/10.47330/dcio.2022.ggnl1577.

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The existing methods for solution space navigation require numerical values to score solutions. The authors introduce a method of quantitative aesthetic evaluation utilizing Computer Vision (CV) as a criterion to navigate solution spaces. Therefore, aesthetics can complement structural, environmental, and other quantitative criteria. The work stands in the extended history of quantifying the visual aesthetic experience. Some precedents are: Birkhoff [1933] and Max Bense [1965] built an approach with experiments to empirically support a measure, whereas Birkin [2010], Ostwald, and Vaughan [2016] devised the first computational methods working on vector drawings. Our research automates and accelerates aesthetic quantification by utilizing CV to extract computable datasets from images. We are especially keen on architectural images as a shorthand to assign an aesthetic value to design, aiming to navigate the solution space in architecture. This work devises a method for rearranging parts in architectural images focusing on formal aspects, in opposition to semantic segmentation where objects unrelated to architectural design (cars, persons, sky…) are quantified to score images [Verma and Jana and Ramamritham 2018]. It uses Maximally Stable Extremal Regions (MSER) [Matas 2004] to recognize architectural parts because it is superior to similar methods such as SimpleBlobDetector in this task. Our method disassembles the parts in a diagram of scaled parts (Fig. 2) to analyze them in isolation, and a diagram of connectivity graph (Fig. 3), to evaluate relationships. These diagrams are examined to compare photos of buildings, cars, and trees to assess the applicability of such a method to a range of objects. Parts and connections are thus quantified, and these values are inputted in a refined version of Birkhoff’s formula to calculate an aesthetic score for each image for navigating the solution space. Finally, it tests the method to draw comparisons between the discrete and continuous paradigms (Fig. 1) in the contemporary discourse of architecture, comparing Zaha Hadid Architects` Heydar Aliyev Centre and Gilles Retsin´s Diamonds House to argue that there is a difference between the aesthetic effects of continuous and discrete designs, besides their distinction in tectonic logic. The method proved to be an efficient procedure for comparatively quantifying the aesthetic judgment of architectural images, enabling designers to incorporate aesthetics as a complementary criterion for solution space navigation in computational design. The method of computational aesthetic measure for solution space navigation and its calibrations via crowdsourced evaluation of images is further detailed in a paper by the authors being published at the 2022 eCAADe conference.
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