Academic literature on the topic 'Crown'

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Journal articles on the topic "Crown"

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Tahar, K. N., M. A. Asmadin, S. A. H. Sulaiman, N. Khalid, A. N. Idris, and M. H. Razali. "Individual Tree Crown Detection Using UAV Orthomosaic." Engineering, Technology & Applied Science Research 11, no. 2 (April 11, 2021): 7047–53. http://dx.doi.org/10.48084/etasr.4093.

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Unmanned Aerial Vehicles (UAVs) are increasingly used in forestry as they are economical and flexible. This study aims to present the advantages of the drone photogrammetry method in collecting individual tree crowns, as individual tree crown detection could deliver essential ecological and economic information. The referred accuracy for individual tree crown extraction is 79.2%. Only crowns that were clearly visible were selected and manually delineated on the image because the distribution of the true crown size is significantly different from the segmented crowns. The aim of this study is to investigate UAVs orthomosaics in individual tree crown detection. The objectives of this study are to produce the orthomosaic of tree crown extraction mapping using the Pix4D software and analyze the tree crowns using tree crown delineation and the OBIA algorithm. Data processing involves the processing of aerial images using Pix4Dmapper. Automatic tree crown detection involves a tree crown delineation algorithm and OBIA operations to process the tree crown extraction. The crown delineation algorithm and OBIA algorithm operation will be compared to the actual tree crown measurement in terms of diameter and area. The tree crown delineation method obtained a 0.347m mean diameter difference from the actual tree crown diameter, while the OBIA approach obtained 4.98m. The tree crown delineation method obtained 97.26% of the actual tree crown area, while OBIA obtained 91.74%.
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Yoshimura, Kenichi. "Spatial distribution and morphology of shoots in the variant crown form of Rhododendron reticulatum." Botany 88, no. 11 (November 2010): 995–1005. http://dx.doi.org/10.1139/b10-071.

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Rhododendron reticulatum D. Don ex G.Don is a common understory shrub in western Japan that exhibits highly plastic crown architecture and occurs in various light environments. I investigated how functional differentiation and spatial distribution of long and short shoots contribute to the plasticity of crown architecture of R. reticulatum. Crown form was derived from the crown depth/width ratio. Crown depth/width ratio was higher in sun-lit crowns. In crowns with higher depth/width ratio, long shoots were distributed in upper positions of the crown. Long shoots grew vertically and horizontally. In crowns with lower depth/width ratio, long shoots were arranged in the outer position of the crown and grew outward. Within neighboring shoots, long shoots had less mass than their paired short shoots. Results suggest that long shoots of R. reticulatum function to expand the crown and to reduce leaf overlap in multilayer crowns, which are found in high-light environments, while both long and short shoots function to minimize leaf overlap in monolayer crowns, which are found in shaded environments. Plasticity of crown architecture by altering shoot position and shoot morphology allows growth under various light environments in the forest understory.
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Mao, Hua, John B. Thorne, Jennifer S. Pharr, and Robert E. Gawley. "Effect of crown ether ring size on binding and fluorescence response to saxitoxin in anthracylmethyl monoazacrown ether chemosensors." Canadian Journal of Chemistry 84, no. 10 (October 1, 2006): 1273–79. http://dx.doi.org/10.1139/v06-093.

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Convenient macrocyclization synthetic routes for the preparation of different-sized monoaza anthracylmethyl crown ether chemosensors (15-crown-5, 18-crown-6, 21-crown-7, 24-crown-8, and 27-crown-9) are described. Evaluation of these crowns as chemosensors for saxitoxin revealed that the larger crowns have moderately higher binding constants, with the 27-crown-9 chemosensor having the largest binding constant (2.29 × 105 (mol/L)–1). Fluorescence enhancements of 100% were observed at saxitoxin concentrations of 5 µmol/L, which is close to the detection limit in mouse bioassay.Key words: anthracene, crown ethers, saxitoxin, paralytic shellfish poison (PSP), binding constants; chemosensors.
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Bamdadian, Zhaleh, Nilgoon Pasdar, Abdolhamid Alhavaz, Shahram Ghasemi, and Ali Bijani. "Comparative Evaluation of Physical and Mechanical Properties of Different Brands of Primary Molar Stainless-Steel Crowns: An In Vitro Study." Open Access Macedonian Journal of Medical Sciences 7, no. 23 (December 10, 2019): 4120–26. http://dx.doi.org/10.3889/oamjms.2019.861.

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BACKGROUND: There is some cases of perforation and undesirable properties of some primary molars stainless steel crowns. AIM: The aim of this study was to compare the physical and mechanical properties of different commercial brands of these crowns. METHODS: In an in vitro study, a total of 10 stainless steel tooth crowns of the second primary mandibular molars size 6 of 4 different commercial brands (a total of 280 crowns) were evaluated. These crowns were included KTR Pre-trimmed and Crimped Nichro Stainless Steel Primary Molar Crowns (KTR, China); 3M Stainless Steel Primary Molar Crowns (ESPE, St paul; USA); NuSmile SSC Pre-contoured (Inc, Houstone, TX; USA) and Kids crown (Shinghung, Seoul; Korea). Corrosion and galvanic corrosion, wear, microhardness, compressive strength, fatigue strength of crowns and weight percent of elements were investigated. RESULTS: The highest rate of microhardness, compressive and Fatigue strength of the crowns were made by Nu Smile > 3M > Kids Crown > KTR respectively. The highest rate of corrosion potential in corrosion and Galvanic corrosion tests was in KTR > Kids crowns > 3M > Nu smile respectively. The order of crown wear was KTR > Kids Crown > 3M > Nu Smile respectively. The highest amount of nickel element was found in the Nu Smile crown and the highest amount of chrome in the 3M crown with a significant difference with others (p < 0.001). The KTR and Kids crowns lacked molybdenum. CONCLUSION: The results showed that Nu Smile crown has better physical and mechanical properties than other evaluated crowns in this study.
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Fish, Heather, Victor J. Lieffers, Uldis Silins, and Ronald J. Hall. "Crown shyness in lodgepole pine stands of varying stand height, density, and site index in the upper foothills of Alberta." Canadian Journal of Forest Research 36, no. 9 (September 1, 2006): 2104–11. http://dx.doi.org/10.1139/x06-107.

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Crown shyness is the empty space between crowns in fully stocked stands that is not related to tree-fall gaps. The objectives of this study were to determine the stand and site factors that control crown shyness in lodgepole pine (Pinus contorta Dougl. ex Loud.) stands and to evaluate whether stands experiencing crown shyness compensate for leaf area losses by maintaining longer crowns. We measured canopy closure (i.e., the inverse of crown shyness), crown radius and length, and green litterfall in stands of various height, relative density, and site index. Canopy closure decreased with stand height and increased with site index and relative density. Green litterfall increased with height and relative density. Crown radius and crown length reached a plateau by 8-10 m height, despite increased spacing between tree boles with increasing stand height. Crown radius increased with height and site index but declined with relative density and slenderness coefficient. Crown length also increased with height and site index but declined with slenderness coefficient. Despite the fact that, in tall stands, where >50% of the sky was not covered by crowns, there was not an accompanying increase in crown length to take advantage of the apparent increase in light transmission to the lower crown.
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Zhang, Li Xian, and Yu Xiao Liu. "Fracture Resistance and Failure Mode of Different Type of Ceramic Crowns." Solid State Phenomena 330 (April 12, 2022): 119–24. http://dx.doi.org/10.4028/p-44ir6o.

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Objective: To study the fracture resistance and failure modes of different type of ceramic crowns. Methods: Four groups of crown including zirconia-veneering porcelain crown (Group 1), whole zirconia crown (CAD/CAM, Group 2), cast ceramic crown (Group 3) and glass ceramic crown (CAD/CAM, chairside, Group 4) with the same thickness were manufactured, each group own 12 crowns. The fracture resistance test and failure modes analysis of the specimens were conducted, SPSS22.0 was used to analyze the difference among the groups. Results: The fracture strength of Group 2 is significantly higher than other three group (P<0.05), Statistical significance was found between group 3 and group 1, group 4. No Statistical significance was found between group 1 and group 4. The failure modes of the whole zirconia crown, the cast ceramic crown and the glass ceramic crown are complete crown fracture; 33% of the zirconia-veneering porcelain crown showed veneering layer fracture, the other 67% showed complete crown fracture. Conclusion: The fracture resistance of the whole zirconia crown are higher than the cast ceramic crown, the zirconia-veneering crown and the glass ceramic crown and the glass ceramic crown (CAD/CAM) is a very convenient prostheses. The failure modes are significantly influenced by the type of the crown.
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Rahate, Ishani, Punit Fulzele, and Nilima Thosar. "Comparative evaluation of clinical performance, child and parental satisfaction of Bioflx, zirconia and stainless steel crowns in pediatric patients." F1000Research 12 (December 21, 2023): 756. http://dx.doi.org/10.12688/f1000research.133464.2.

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Background Pediatric dental treatment is challenging in patients with early childhood caries. For clinician its difficult to manage child and provide good work at the same time. Its necessity to have the best equipments as well as materials. Nowadays, aesthetics play an important role in managing decayed teeth. Zirconia crown is better option but requires excessive preparation. As Bioflx is newly developed crown and has combined stainless steel and zirconia properties. Aim To assess the clinical performance and child and parental satisfaction of Bioflex crowns compared to zirconia and stainless steel crowns. Methods In this comparative study of Bioflx crowns with zirconia and stainless steel crowns, children aged three to seven years old will be selected, and 72 primary teeth requiring crowns will be randomly distributed into three groups, n = 24: Group I: Preformed stainless steel crown, control; Group II: Preformed Bioflex crown; Group III: Preformed zirconia crown. Crowns will be evaluated for recurrent caries, plaque accumulation, restoration failure, gingival status opposing tooth wear, and clinicians and parental satisfaction at zero, three, six, and 12 months. Results Bioflx crown will have better clinical as well as parental satisfaction among zirconia and stainless steel crowns. Conclusions The Bioflx crown can be used as an alternative economical esthetic full-coronal restoration for primary teeth. Trial registration CTRI registration number: CTRI/2023/05/052256; Date of registration: May 03, 2023. Protocol version Two; Date: April 22, 2023
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Rocha, Adna Alves, Marco Aurélio de Carvalho, Dimorvan Bordin, Altair Antoninha Del Bel Cury, and Priscilla Cardoso Lazari-Carvalho. "Biomechanical behavior of different designs of hybrid abutment-restoration on the posterior crown: a finite element analysis." Brazilian Dental Journal 34, no. 6 (2023): 140–49. http://dx.doi.org/10.1590/0103-6440202305539.

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Abstract This study aimed to evaluate the influence of material and crown design on the biomechanical behavior of implant-supported crowns with hybrid abutment (HA) through three-dimensional (3D) finite element analysis. The study factors were the type of material used as the mesostructure or crown (zirconia, lithium disilicate, and hybrid ceramic) and the crown design cemented to the titanium base (mesostructure cemented to the titanium base and a crown cemented on it (HaC); hybrid crown-abutment, the abutment and crown are manufactured as a single piece and cemented to the titanium base (HC); monolithic crown cemented on the titanium base and screwed to the implant (CS); and monolithic crown cemented on the titanium base (CC). Four 3D models were constructed using an implant with an internal connection, and an oblique load of 130 N was applied at 45° to the long axis of the implant. The models were evaluated using the von Mises stress for crown, abutment, screw, and implant and maximum principal stress for bone tissues. The lowest stresses occurred in the groups with a lower elastic modulus material, mainly hybrid ceramics, considered a material with greater resilience. The cemented crown group presented the lowest stress values. The stresses were concentrated in the cervical region of the crown at the titanium crown/base interface. Mesostructures made of materials with a higher elastic modulus exhibited a higher concentration of stress. The presence of a screw hole increased the stress concentration in the ceramic crown. Cemented ceramic crowns exhibited better biomechanical behavior than screw-retained crowns.
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Zhou, Jun Wei, and Da Zheng Wang. "Parametric Study of Crowned Blade in Horizontal Axial Turbine." Advanced Materials Research 732-733 (August 2013): 443–50. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.443.

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The horizontal axial turbine could extract kinetic energy from both wind and tidal stream. In this paper, a type of horizontal axial turbine was designed with a crown stalled on the blade tip and the turbine was analyzed in a tidal stream. Several turbines with different geometries of the crowns were compared, whose power coefficients were numerically simulated by the CFD method. Effects of the crown design parameters, such as crown setting directions and different widths on turbine efficiency were discussed. Furthermore, when the turbine worked at different tip speed ratio, the results were discussed, either. By analysis of the results, it is could be concluded that a circular crown was sufficient to eliminate blade tip loss caused by tip leakage flow. The upstream semicircle crown modified the corresponding side foil pressure distribution to the design value, and so did the downstream semicircle crown. In the ellipse crowns testing, turbine efficiency was approximately in line with the value of crowns width. When the turbine with the circular crown worked at a little higher tip speed ratio than the design value, the crown was effective as before.
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Zeide, Boris, and Peter Pfeifer. "A Method for Estimation of Fractal Dimension of Tree Crowns." Forest Science 37, no. 5 (November 1, 1991): 1253–65. http://dx.doi.org/10.1093/forestscience/37.5.1253.

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Abstract A method is proposed for estimating fractal dimension of tree crowns from measurements of foliage mass and crown volume. Because fractal dimensions for each of the ten investigated species were greater than two, crown surface and volume depend on the unit of measurement. The power relationship between foliage mass and crown volume reflects self-similarity of tree crowns. In all studied cases, fractal dimensions of dominant trees were greater than those of intermediate trees of the same species. Fractal dimension can be used as an indicator of tolerance, crown class, and foliage distribution within a crown. For. Sci. 37(5):1253-1265.
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Dissertations / Theses on the topic "Crown"

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Park, Stuart R. "Homoleptic crown cabenes." Thesis, University of Strathclyde, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488554.

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Despite the resurgence of research on N-heterocyclic carbene ligands there has been a dearth of multi-dentate macrocyclic ligands of this class reported. Herein we report the synthesis and characterisation of a tetradentate macrocyclic ligand.
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Hurter, Jade. "Python Crown Girl." ScholarWorks@UNO, 2016. http://scholarworks.uno.edu/td/2156.

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Zang-Bodis, John Robert. "Mesiodistal crown size in relation to the risk and severity of malocclusion." View the abstract Download the full-text PDF version, 2009. http://etd.utmem.edu/ABSTRACTS/2009-030-Zang-Bodis-index.htm.

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Thesis (M.S.)--University of Tennessee Health Science Center, 2009.
Title from title page screen (viewed on October 8, 2009). Research advisor: Edward F. Harris, Ph.D. Document formatted into pages (x1vii, 470 p. : ill.). Vita. Abstract. Includes bibliographical references (p. 151-160).
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Page, Wesley G. "Bark Beetle-Induced Changes to Crown Fuel Flammability and Crown Fire Potential." DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/2081.

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Recent outbreaks of mountain pine beetle (Dendroctonus ponderosae Hopkins) in lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) forests and spruce beetle (Dendroctonus rufipennis Kirby) in Engelmann spruce (Picea engelmannii Parry ex Engelm.) forests have affected vast areas across western North America. The highlevels of tree mortality associated with these outbreaks have raised concerns amongst fire managers and wildland firefighters about the effects of the tree mortality on fire behavior, particularly crown fire behavior, as crown fires hinder the ability of firefighters to conduct safe and effective fire suppression operations. Current information regarding crown fire dynamics in recently attacked forests is limited to results obtained from simulations employing either inappropriate and/or unvalidated fire behavior models based on inadequate descriptions of crown fuel flammability. The purpose of this research was to measure and characterize the changes in crown fuel flammability caused y recent bark beetle attack and to describe the implications of these changes on crown fire potential in affected forests. Results indicated that bark beetle attack causes a significant decline in moisture content and change in chemical composition in lodgepole pine and Engelmann spruce tree foliage, which substantially increases foliage flammability. Additionally, it was found that conventional models used to predict the moisture content of fine, dead surface fuels were inappropriate for predicting the moisture content of foliage on mountain pine beetle-attacked lodgepole pine trees during the red stage. Therefore, calibrated operational models and models based on diffusion theory were developed and evaluated that could accurately predict hourly fluctuations in moisture content. The implications of these changes on crown fire potential are dependent upon a host of site specific factors including outbreak duration, severity, and the specific stand characteristics. Based on our results, we believe that current fire behavior models, including popular semi-empirical and physics-based models, are currently inadequate for accurately predicting crown fire potential in forests recently attacked by bark beetles. In order to make significant progress in our understanding of crown fire potential in recently attacked forests, a substantial effort to document wildfire behavior in the field and/or to conduct experimental fires is needed.
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Babie, Paul Theodore. "Crown land in Australia." Thesis, University of Oxford, 2001. https://ora.ox.ac.uk/objects/uuid:7e3678b3-a274-468c-bbc0-ef348bb51a00.

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Property theory has long explored the meaning and content of private property. Similarly, one finds no shortage of analysis of common or communitarian property. In the theoretical literature, however, one finds very little writing about public property, a third, very significant, type of property. This lack of attention is not due to a lack of examples; on the contrary, examples abound. This thesis offers a theoretical analysis of one such example: Crown land in Australia. Crown land is a largely forgotten and therefore under-analysed aspect of Australian real property law. This lack of analysis has produced significant confusion in recent judicial developments concerning Australian common law native title. In order to alleviate the potential for confusion, this thesis fills a long-standing gap in the literature of Australian real property law. In order to fill this gap and to provide a much-needed analytical account, it is necessary to make use of working definitions of private, public and communitarian property. This thesis provides each. First, using JW Hams' Property and Justice, it constructs a working definition of private property. From that, by way of contrast, a working definition of public property is offered. Finally, by way of contrast to both private and public property, a working definition of communitarian property is also developed. Armed with working definitions of private, public and communitarian property, the thesis provides an analytical account of Crown land in Australia. It describes Crown land as the quasi-ownership use-privileges and control-powers which the Crown, by virtue of its prerogative power over land, enjoys in Australian land. The Crown enjoys differently packaged bundles of such privileges and powers over many different sorts of land, such as those which have never been allocated for any use, specific natural resources such as minerals or petroleum, those over which Australia's Aboriginal peoples enjoy native title, and even those over which private persons hold freehold estates or statutory leases. All such lands, due to the Crown's quasi-ownership privileges and powers therein, can be called Crown land, which embraces a continuum of locations, each defined by a unique package of such privileges and powers over the relevant type of land. The thesis calls this the Crown land continuum, which, in its totality, is a working example of public property.
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Baskerville, Bruce Gordon. "The Chrysalid Crown: An un-national history of the Crown in Australia 1808 – 1986." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/16395.

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This thesis set out to answer a deceptively simple question: why did the 1999 referendum to abolish the Australian Crowns fail? It focuses on the evolving civic personalities, communal identities and popular representations of the Crown in Australia, and how those representations and agents changed over 180 years. Capacities for the Crown’s continuing mutability, especially its divisibility, are at the heart of these imaginings. The answer to the question lies partly in emotions, in passion and the heart rather than in reason and the mind, along with a complex historical mix of other factors. Each chapter focuses on a single event or artefact: a usurpation of vice-regal authority, a proposal for a cadet kingdom of Australia, a mystic royal response to anti-German persecution, a State’s attempt to secede under the Crown and the invention of a chivalric order. The thesis posits a complex, iterative and changing network of social relationships rather than a simple metropole-periphery binary or hierarchy. It disaggregates ideas of crown, Britishness, empire, nation and Australianess, and concludes on the eve of the 1988 bicentennial celebrations when the Crown in Australia appeared splendid, popular, modern, federal, natural and regenerative. They were characteristics that, with hindsight, girded an Australian institution at once ancient and contemporary for the challenges of the 1990s when it stared-down what appeared to be an existential threat from Australian republicanism.
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McGladdery, Christine Anne. "Crown-magnate relations, 1437-1460." Thesis, University of St Andrews, 1988. http://hdl.handle.net/10023/2619.

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This thesis examines the relations between James II and those magnates who were active in politics during his reign, which lasted from 1437-1460. The Black Douglas family were of particular importance during both the minority and the personal rule of James II and their rise to prominence, conflict with the king, and ultimate downfall is studied with particular reference to their bases of power and support. The attitude of the king to the higher, and, where appropriate, lesser nobility is considered, and the thesis traces the development of the political community from the beginning of the reign, when the ranks of the higher nobility were severely depleted, to the state of the realm and its leaders at the time of the king's death in 1460. The major conflict with the Black Douglases is examined through official records and chronicle references and the various stages in the development of the contest are outlined and assessed. The attitude of the other members of the political community to the Crown/Douglas conflict is studied, and the king's methods of courting support, particularly through patronage, are traced. The attacks launched by the king on certain members of the nobility or, in the case of the Livingston faction, royal office holders, are considered, as are his efforts to build up the position of certain families and replenish the ranks of the nobility by creating certain earldoms and lordships of parliament. The rise of honorific dignities, i. e, the bestowal of titles which did not necessarily include the granting of any new land, is discussed, and the king's relationship with the three estates gathered in Parliament or General Council is assessed. The view of the reign of James II which appears in modern histories is traced through from contemporary sources with particular reference to the histories written in the sixteenth century which have provided much of the material, including errors and distortions, which have formed recent assessments.
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Sutton, Liam Richard. "Studies on functionalised crown thioethers." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285639.

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Nearchou, Antony. "Zeolites fit for a crown." Thesis, University of Bath, 2019. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767594.

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Phillips, Matthew. "Church, crown and complaint : petitions from bishops to the English crown in the fourteenth century." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/13805/.

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This thesis explores the interaction of bishops with both the English crown and members of late medieval society more generally by focusing on petitions and the supplicatory strategies adopted by bishops in their endeavours to secure legal remedy. Aside from revealing that bishops were often indistinguishable from lay petitioners in terms of the content of their petitions, with many of their complaints arising from their role as great landlords and tenants-in-chief rather than relating to the exercise of episcopal office, this research has also demonstrated that distinct supplicatory cultures separated the clergy from the laity. Notably, whereas petitions from lay supplicants often incorporated crown-alignment rhetoric into their petitions, thereby mirroring the language of ‘common profit’ found in common petitions, petitions from bishops reflected the supplicatory character of the clerical gravamina and presented requests for the exclusive interest of the church. As such, petitions from bishops, alongside the clerical gravamina, encapsulated a set of values, manifest through the use of language and rhetoric, which sought to assert the institutional independence of the church. Yet, despite being part of a supplicatory culture which sought to defend church autonomy and ecclesiastical jurisdictional integrity, the petitionary system in England sapped the supplicatory strength of the clergy and reduced their ability to defend their autonomy in the face of royal demands.
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Books on the topic "Crown"

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Yu, Higuri, Schilling Christine, and Wada Shinji, eds. Crown. [Agoura Hills, Calif.]: Go! Media Entertainment, 2008.

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Yō, Higuri, and Verschueren Sonia, eds. Crown. [Paris]: Asuka, 2008.

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Smith, Sherwood. Crown Duel: Crown & Court #1. San Diego: Harcourt Brace & Co., 1997.

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FRANCIS, FELIX. TRIPLE CROWN. [Place of publication not identified]: SIMON & SCHUSTER LTD, 2017.

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Ling, Peter. Crown house. Long Preston: Magna Print, 1990.

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Opene, Francis. The crown. Benin City, Nigeria: Idodo Umeh Publishers Ltd, 1995.

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Kalim, Mazhar. Crown agency. Multan: Yusuf Brothers, 1990.

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Rutherford, Meg. Foggy's crown. London: A. Deutsch, 1989.

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Ling, Peter. Crown papers. London: Weidenfeld & Nicolson, 1989.

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Breen, Jon L. Triple crown. Bath: Chivers, 1986.

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Book chapters on the topic "Crown"

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McAuley, James W., and Paul Nesbitt-Larking. "Crown." In Contemporary Orangeism in Canada, 47–61. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61842-5_4.

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Gooch, Jan W. "Crown." In Encyclopedic Dictionary of Polymers, 184. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_3135.

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Hart, Eric. "Crown." In Prop Building for Beginners, 91–98. New York, NY : Routledge, 2021.: Routledge, 2021. http://dx.doi.org/10.4324/9780429350825-12.

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Salemaa, Maija, and Martti Lindgren. "Crown Condition." In Forest Condition in a Changing Environment, 121–32. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-015-9373-1_14.

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Messenger, Sally, and Humphrey Shaw. "Crown Hotels." In Hospitality Management, 98–101. London: Macmillan Education UK, 1991. http://dx.doi.org/10.1007/978-1-349-21595-9_18.

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Messenger, Sally, and Humphrey Shaw. "Crown Hotels." In Hospitality Management, 206–7. London: Macmillan Education UK, 1991. http://dx.doi.org/10.1007/978-1-349-21595-9_48.

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Black, Michael. "‘The Crown’." In D. H. Lawrence: The Early Philosophical Works, 330–98. London: Palgrave Macmillan UK, 1991. http://dx.doi.org/10.1007/978-1-349-10111-5_9.

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Alder, John. "The Crown." In Constitutional and Administrative Law, 229–49. London: Macmillan Education UK, 1999. http://dx.doi.org/10.1007/978-1-349-15077-9_11.

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Mohapatra, P. K. "Crown Ethers." In Encyclopedia of Membranes, 488–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-44324-8_162.

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Xanthopoulos, Gavriil, and Miltiadis Athanasiou. "Crown Fire." In Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires, 1–15. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-51727-8_13-1.

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Conference papers on the topic "Crown"

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Li, Qin, Jianxin Li, Jinpeng Huai, Xingang Liu, and Chunming Hu. "CROWN-ST: A Security and Trustworthiness Architecture for CROWN." In 2006 Second IEEE International Conference on e-Science and Grid Computing (e-Science'06). IEEE, 2006. http://dx.doi.org/10.1109/e-science.2006.261107.

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Torggler, Manfred, Jorg Keller, and Christoph Kessler. "Asymmetric Crown Scheduling." In 2017 25th Euromicro International Conference on Parallel, Distributed and Network-based Processing (PDP). IEEE, 2017. http://dx.doi.org/10.1109/pdp.2017.22.

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Tufaile, Alberto, and Adriana Pedrosa Biscaia Tufaile. "Investigating Crown Flashes." In Frontiers in Optics. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/fio.2020.jth4a.17.

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Han, Xinyu, and Sheng Dong. "An Experimental Study on the Wave Force on the Slope of Smoothed Mound Breakwater With and Without Crown Wall Under Medium-Long Period Waves." In ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-79286.

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Abstract A Mound breakwater is a common coastal defence against waves. The wave force has greatly related to the stability of the armour blocks. Medium-long period waves have greatly impact on coastal structures and are attracting more and more attention. In this work, the wave force and pressure distribution on the slope of smoothed mound breakwater were studied by experiments. Total of 140 tests were carried out, in which 70 sets are breakwaters with crown wall, and the other 70 sets are breakwaters without crown wall. In the scope of medium-long period waves, the wave force on slope of the breakwater with crown wall is similar to that without crown wall. Neelamani method is more suitable for the breakwater without crown wall and its top submerged. Under short period waves, the maximum pressure on the slope is different. The pressure on the slope with and without crown wall is similar. Pressure at berm with crown wall is greater than that without crown wall. The maximum ratio of the horizontal velocity in front of breakwater with and without crown wall is about 2. A formula was proposed to predict the difference of pressure at the berm with and without crown wall through the difference of reflection coefficient Cr.
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Nozdracheva, R., and R. Kostennikov. "PECULIARITIES OF CHERRY PROPAGATION ON CLONAL ROOTSTOCKS." In FORESTRY-BIOLOGICAL FOUNDATIONS OF SUSTAINABILITY OF NATURAL AND ARTIFICIAL PHYTOCOENOSES. FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov, 2024. http://dx.doi.org/10.58168/fbfsnap2024_242-248.

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Cherry is a fruit stone fruit crop, popular in many countries of the world and on the territory of the Russian Federation. Cherry fruits are valued for their dessert and delicate taste, high content of nutrients. It is consumed fresh and processed. Cherries are especially suitable for making compotes. Breeders have created many varieties of cherries for different soil and climatic conditions. Cherry varieties differ in color and ripening of fruits. The trees are tall, have a spreading and sparse crown, and require regular pruning. To create cherry varieties with small-sized crowns, it is necessary to select compact crowns and propagate cherry varieties on clonal rootstocks. Scientific studies on the propagation of cherries on vegetatively propagated rootstocks indicate a decrease in the growth activity of annual seedlings in the fruit nursery, and shortening of the central trunk of seedlings (tweezing) allows you to increase the formation of side shoots at a given height and form a crown in annual cherry seedlings. It has been established that the studied cherry varieties when grafted on clonal rootstocks VSL-1 and LC-52 provide good survival in the nursery, high yield of planting material, but the growth and development of seedlings depends on variety-rootstock combinations.
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"Crown Plaza Floor Plan." In 2005 Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics. IEEE, 2005. http://dx.doi.org/10.1109/icimw.2005.1572374.

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El-Azhary, A. A., N. Al-Jallal, A. Al-Kahtani, N. Al-Badri, K. Al-Farhan, and M. Al-Qunaibit. "Structure of crown ethers." In THEORY AND APPLICATIONS IN COMPUTATIONAL CHEMISTRY: THE FIRST DECADE OF THE SECOND MILLENNIUM: International Congress TACC-2012. AIP, 2012. http://dx.doi.org/10.1063/1.4730663.

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Yusko, Juliann, and Armine Ghalachyan. "From Crown to Couture." In Bridging the Divide. Iowa State University Digital Press, 2024. http://dx.doi.org/10.31274/itaa.17080.

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Duyar, Mustafa. "Mass Conserving Elastohydrodynamic Piston Lubrication Model With Incorporated Crown Lands." In ASME 2007 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/icef2007-1710.

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This paper describes a comprehensive model of Elastohydrodynamic piston lubrication, incorporated the crown lands into solution domain to characterize the effect of crown-liner interactions on piston motion. Elastohydrodynamic Lubrication (EHL) analysis of a piston skirt-liner conjunction is in general a useful methodology for design analysis of pistons. The diameters of piston crown lands are much less than those of skirt and liner for typical piston designs. Therefore crown lands normally do not interact with liner under usual operating conditions and hence most of the researchers exclude crown lands from the EHL analysis and mainly focus on piston skirt. However, under some of the engine operating conditions piston crown lands play important role in the secondary dynamics and tribology aspects of pistons. During the thermodynamic cycle when piston is hot and cylinder liner is relatively colder, piston thermal expansion leads to crown-liner interaction, which necessitates EHL, asperity contact and wear considerations of piston crown along with piston skirt. The simulation methodology for piston EHL analysis uses a mass-conserving algorithm for the finite volume method solution of Reynolds equation, which is coupled to elasticity relations and Greenwood-Tripp asperity contact model. Elrod’s mass conserving algorithm enables to model and analyze partially lubricated piston-liner interface by the input of oil supply and moreover rigorously handles cavitated zones, and takes into account piston ring grooves, piston cut-outs and unlubricated areas due to piston geometry. Results are presented from parametric studies that show comparisons between the analyses of the models with piston skirt lubrication only and piston lubrication, which incorporates the crown lands to the EHL domain.
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Vazirova, Leyla, and Govhar Abbasova. "Sorbents Based on Iron Oxide Nanoparticles for Release of Tetracyclines for Water Treatment." In 2nd International Scientific-Practical Conference "Machine Building and Energy: New Concepts and Technologies". Switzerland: Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-sh9pfn.

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The aim of the research was to establish and produce unfamiliar magnetic absorbents based on a commonly accessible specimen containing crown ethers via iron nanoparticles (magnetite), investigation their structural, magnetic, and absorbance properties, and analyze the possible utilization of these sorbents for the sorption and accumulation of tetracyclines. New crown complexes with biological prop ethers have been created, and the structure of the produced crown complexes has been determined using elemental analysis data from studies of these samples' IR, mass, and NMR spectra. According to the contact duration between the phases, the pH and solution's composition, the structure of tetracyclines, and their concentration, an organized research of the sorption of tetracycline on a magnetic composite with crown ethers was conducted as a component of the study. Crown ethers and Fe3O4 (CE@Fe3O4NPs) nanoparticles were produced under certain conditions, and the composites' magnetic and structural characteristics were evaluated. Tetracyclines were evaluated for their ability to bind to the nanostructures produced by CE@Fe3O4 NPs. These structures have no negative effects and remain safe for consumption. Crown ethers are currently produced using novel techniques, and new magnetic sorbents made with crown ethers and Fe3O4 nanoparticles have also been developed. It has been shown that magnetic sorbents composed of Fe3O4 nanoparticles and crown ethers have superparamagnetic characteristics. The research in consideration identifies and discusses the characteristics of tetracyclines' sorption behavior. There are several methods for concentrating tetracyclines for sorption onto a magnetic sorbent using Fe3O4 nanoparticles and crown ethers from aqueous solutions. Our research has demonstrated, using the example of produced CE@Fe3O4 NPs nanostructures, that mixing the nanotechnological approach with the methods of supramolecular chemistry offers a large adsorption effectiveness.
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Reports on the topic "Crown"

1

Bétournay, M. C. Surface crown pillar handbook English-French lexicon of surface crown pillar related terms. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1988. http://dx.doi.org/10.4095/305080.

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Scott, Joe H., and Elizabeth D. Reinhardt. Assessing crown fire potential by linking models of surface and crown fire behavior. Ft. Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2001. http://dx.doi.org/10.2737/rmrs-rp-29.

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Bronson, R. T., Jerald S. Bradshaw, Paul B. Savage, Krzysztof E. Krakowiak, and Reed M. Izatt. Synthesis of Bis-8-Hydroxyquinoline-Armed Diazatrithia-15-Crown-5 and Diazatrithia-16-Crown-5 Ligands. Fort Belvoir, VA: Defense Technical Information Center, April 2001. http://dx.doi.org/10.21236/ada389716.

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Bronson, R. T., Jerald S. Bradshaw, Paul B. Savage, Saowarux Fuangswasdi, and Sang C. Lee. Photophysical Properties of Bis-8-Hydroxyquinoline-Armed Diazatrithia-15-Crown-5 and Diazatrithia-16-Crown-5 Ligands. Fort Belvoir, VA: Defense Technical Information Center, April 2001. http://dx.doi.org/10.21236/ada389688.

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Bartsch, R. Metal ion complexation by ionizable crown ethers. Office of Scientific and Technical Information (OSTI), September 1989. http://dx.doi.org/10.2172/5483625.

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Randolph, KaDonna C., and W. Keith Moser. Tree crown conditions in Missouri, 2000-2003. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station, 2009. http://dx.doi.org/10.2737/srs-gtr-113.

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Lamson, Neil I., H. Clay Smith, Arlyn W. Perkey, Samuel M. Brock, and Samuel M. Brock. Crown release increases growth of crop trees. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station, 1990. http://dx.doi.org/10.2737/ne-rp-635.

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Randolph, KaDonna C., and W. Keith Moser. Tree crown conditions in Missouri, 2000-2003. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station, 2009. http://dx.doi.org/10.2737/srs-gtr-113.

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Bartsch, R. Metal ion complexation by ionizable crown ethers. Office of Scientific and Technical Information (OSTI), June 1990. http://dx.doi.org/10.2172/6737356.

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Robertson, Alison, Kiersten Wise, and Tamra A. Jackson-Ziems. Frequently Asked Questions about Crown Rot in Corn. United States: Crop Protection Network, March 2023. http://dx.doi.org/10.31274/cpn-20230307-0.

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