197,608 research outputs found
Introdução à teoria da classificação, de M. A. Requião Piedade
No full textPIEDADE, M. A. Requião. Introdução à teoria da classificação. Rio de Janeiro: Interciência, 1977. 185 p
Piedade popular em Portugal, Tomo I: Noroeste. [Reseña]
No full textReseña de: Zília Osório DE CASTRO - Paule LEROU (dirs.),
Piedade popular em Portugal, Tomo I: Noroeste,
Rui Afonso da Costa - Paule Lerou, Edicoes
Távola Redonda - Letouzey et Ané, Lisboa 1998,
462 pp
Fenologia reprodutiva de esp\ue9cies de brom\ue9lias na Serra da Piedade, MG, Brasil
No full textO presente trabalho objetivou caracterizar a fenologia reprodutiva das espécies de Bromeliaceae da Serra da Piedade. Das dezoito espécies estudadas, 72% floresceram na estação chuvosa e 28% na estação seca. Observou-se que a floração das bromélias ao longo do gradiente altitudinal da Serra da Piedade foi seqüencial e influenciada pela sazonalidade das chuvas. A maioria das espécies que ocorrem no habitat xérico pedregoso (acima de 1.400 m de altitude) apresentou a floração na estação chuvosa, enquanto que três das cinco espécies que ocorrem no ambiente mésico florestal (abaixo de 1.300 m de altitude) floresceram na estação seca. Espécies simpátricas com características florais semelhantes, como Tillandsia stricta, T. gardneri, Vriesea crassa e V. citrina, também apresentaram floração seqüencial. A dispersão das espécies com sementes aladas (Pitcairnoideae) e plumosas (Tillandsioideae) ocorreu na estação seca, exceto para Dyckia saxatilis e Racinaea aerisincola. Foi observada assincronia na maturação dos frutos e dispersão das sementes entre as bromélias zoocóricas. É provável que essas condições permitam às espécies de bromélias da Serra da Piedade evitar a sobreposição do uso de animais vetores de pólen e de sementes.This work characterizes the phenology of Bromeliaceae species at Serra da Piedade. Of the i8 species studied, 72% flowered in the rainy season and 28% in the dry season. We observed sequential flowering of bromeliads along the entire altitudinal gradient at Serra da Piedade; flowering was also influenced by rainfall seasonality. Most species that occur in the rocky xeric habitat (above 1400 m altitude) flowered during the rainy season, while three of the five species found in the mesic forest (below 1300 m altitude) flowered in the dry season. Sympatric species with similar floral characteristics, such as Tillandsia stricta, T. gardneri, Vriesea citrina and V. crassa, also flowered sequentially. The dispersal of species with winged seeds (Pitcairnoideae) and plumose seeds (Tillandsioideae) occurred in the dry season, except for Dyckia saxatilis and Racinaea aerisincola. Asynchrony was observed in fruit maturation and seed dispersal among zoochorous bromeliads. These conditions probably allow the bromeliad species of Serra da Piedade to avoid use overlap of animal vectors of pollen and seeds
Correction: Validation and Implementation of 4-domain Patient-reported Outcome Measures (PROMs) Tailored for Orthopedic Sports Medicine
No full textErratum in
Correction: Validation and Implementation of 4-domain Patient-reported Outcome Measures (PROMs) Tailored for Orthopedic Sports Medicine.
Piedade SR, Hutchinson MR, Ferreira DM, Ferretti M, Maffulli N.
Int J Sports Med. 2021 Dec;42(14):e2. doi: 10.1055/a-1372-4862. Epub 2021 Feb 1.
PMID: 33525002 No abstract available.
Abstract
The validation of a 4-domain PROM tailored to orthopedic sports medicine was performed through item generation, item scaling, validity and reliability testing, statistical analysis, as well as item reduction. Conbrach's alpha was used to verify item homogeneity, i. e. their accuracy or consistency. This PROM showed acceptable statistical accuracy and clinical applicability for a variety of surgical treatments, regardless of the anatomical injury sites. Moreover, this PROM considers the athletes' primary physical demands in an non-injured baseline condition, their motivation to continue sports practice and participation, and the influence of sports practice on their quality of life. This 4-domain PROM tailored for orthopedic sports medicine appears to be a valid tool to assess athletes and high-performing practitioners with sports injuries, recording their perception of injury, expectations of treatment; evaluation of postoperative care and treatment received, and perceived outcomes compared to their pre-injury status of physical demands in sports activity. The tool is unique, allowing direct comparisons between athletes' perception of pre-injury baseline, injury, treatment, and outcome. It will be a welcome adjunct to the sports medicine professional's tool box when assessing athlete's status and outcome after injury and intervention
New organometallic Ru(II) and Fe(II) complexes with tetrathia-[7]-helicene derivative ligands
No full textA series of organometallic complexes possessing new tetrathia-[7]-helicene nitrile derivative ligands [TH-7] as chromophores, of general formula [MCp(P-P)(NC{TH-[7]-Y}Z)][PF6] (M = Ru, Fe, P-P = DPPE, Y = H, NO2, Z = H, C≡N; M = Ru, L-L = 2PPh3, Y = H, Z = H) has been synthesized and fully characterized. 1H NMR, FT-IR and UV-Vis. spectroscopic data were analyzed with in order to evaluate the existence of electronic delocalization from the metal centre to the coordinated ligand to have some insight on the potentialities of these new compounds as non-linear optical molecular materials. Slow crystallization of compound [RuCp(PPh3)2(NC{TH-[7]-H}H)][PF6] 2Ru revealed an interesting isomerization of the helical ligand with formation of two carbon-carbon bonds between the two terminal thiophenes, leading to the total closure of the helix (2*Ru)
Crystal Engineering through Solvent Mediated Control of Molecular Conformation: The Case of 5-Hydroxynicotinic Acid
No full textThe importance of molecular conformation for polymorphism and its repercussions in terms of tight control over the industrial production of crystalline organic materials with highly reproducible physicochemical properties has long been recognized. Efforts to understand how a crystallization solvent can direct the formation of a polymorph containing a specific molecular conformation are, however, relatively scarce. Nicotinic acid (NA) and its hydroxyl derivatives (2-, 4-, 5-, and 6-hydroxynicotinic acids) are very good models for such studies. Indeed, regardless of the solvent, NA always crystallizes as a single polymorph with the molecule in the same neutral conformation. In contrast, the hydroxyl derivatives are prone to polymorphism and solvate formation and, depending on the crystallization conditions, the molecules in the crystal lattice can exhibit hydroxyl, oxo, or zwitterionic conformations. The present study focused on 5-hydroxynicotinicacid (5HNA) shows that by judicious selection of the solvent it is possible to obtain 1:1 solvates, where solvation memory is not completely lost and the tautomer preferred in solution persists in the crystalline state: zwitterionic in 5HNA·H2O and neutral in 5HNA·DMSO. Nevertheless, upon thermal desolvation the obtained materials evolve to the same unsolvated form where the molecule is in a zwitterionic conformation. The structures of 5HNA·H2O and 5HNA·DMSO obtained from single crystal-ray diffraction are discussed and compared with that of 5HNA solved from powder data. The energetics of the dehydration/desolvation process was also fully characterized by thermogravimetry (TG), differential scanning calorimetry (DSC) and Calvet microcalorimetry
Ethics of dust:visual essay on the artistic works by Jorge Otero-Pailos
No full textThe works of artist and preservation architect Jorge Otero-Pailos on experimental preservation provoke deep reflections about some of the fundamental questions dealing with heritage: temporality of objects, changeability of inscribed cultural values, the greater purpose of architectural preservation as a cultural practice, and the societal role of an architect and preservationist in formulating narratives around heritage. As the artistic installations featured in this visual essay — The Ethics of Dust (2014–2016) and Watershed Moment (2020) — demonstrate, Jorge Otero-Pailos combines various elusive elements, such as water sounds and dust, to conceive meditative and contemplative spaces. His installations invite visitors to pause and reflect on the memories, both personal, social, and environmental, that define each of us; they probe deep into the past and deep into the future.Since these are some of the issues we wanted to explore in this special issue, ‘Embodiment and Meaning-making: Interdisciplinary Perspectives on Heritage Architecture’, we invited various artists and scholars to write a very short caption in reaction to the images provided by the author through one of these three ‘lenses’:- affect, embodied experience, atmosphere;- politics of heritage;- processes of meaning-making.The results reveal the power of images to provoke imagination through atmospheric and embodied experiences, and the power of experimental heritage work to convey (political) meaning across distance and different analogue or digital media.This visual essay includes contributions from (in order of appearance): Tenna Doktor Olsen Tvedebrink, Federico De Matteis, Michael Hirschbichler, Jovana Popić, Maria De Piedade Ferreira, Uta Pottgiesser, Marcus Weisen and Brady Wagoner, with an epilogue from Jorge Otero-Pailos.Situated ArchitectureHeritage & Technolog
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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