Готові списки джерел за темами / Guide de prospection

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Добірка наукової літератури з теми "Guide de prospection"

Автор: Grafiati

Опубліковано: 7 вересня 2022

Оновлено: 18 вересня 2022

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Статті в журналах з теми "Guide de prospection"

Armbrust, G. A. "Guide de Prospection des mate´riaux de carrie`re." Earth-Science Reviews 22, no. 2 (September 1985): 145–46. http://dx.doi.org/10.1016/0012-8252(85)90007-8.

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Ferraz, Renato Ribeiro Nogueira, Aline Grasiele Cardoso De Brito, Luc Quoniam, and Jesús Pascual Mena-Chalco. "Extraction and on line availability of indicators related to social responsibility, popularization and result prospection of research in nanotechnology in Brazil." International Journal of Innovation 7, no. 3 (September 9, 2019): 373–91. http://dx.doi.org/10.5585/iji.v7i3.337.

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Scriptlattes computational tool was used for extraction of performance indicators related to social responsibility, popularization and result prospection of research in nanotechnology in Brazil using as data source Plataforma Lattes and the CNPq Research Group Directory. Besides allowing for a quantitative evaluation of the bibliographic production on the matter, which used as base the number of published papers and book chapters, amongst other productions, the extractions have also allowed for the evaluation of indicators such as technological products, processes and techniques, related to the social responsibility in research, such as magazines and newspaper articles, linked to the popularization of Scientific results. Yet, the observation of indicators such as thesis and current research projects allowed the observation of prospective future results of current research in nanotechnology. Apart from the results related to the bibliographic productions, which can be found in several data basis, the tool makes available indicators in circular basis, which on turn, permit the prospect evaluation of future research results, as well as the evaluation of social responsibility and the popularization of research on the theme. The presented results may be replicated for any subject of interest, and may be used to guide future scientific research in the country.

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Howard, A. J., and M. G. Macklin. "A generic geomorphological approach to archaeological interpretation and prospection in British river valleys: a guide for archaeologists investigating Holocene landscapes." Antiquity 73, no. 281 (September 1999): 527–41. http://dx.doi.org/10.1017/s0003598x0006508x.

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Landscape archaeology depends greatly on the nature of the underlying physical landscape, and an understanding of its formation processes and change. We are pleased to publish this contribution on the Holocene river valleys of Britain, which provides important guidance on the integration of archaeological and geomorphological evidence, in building models for assessing potential archaeological preservation and erosion.

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Lopes, Adriana Araújo Castro, and Márcia Abrahão Moura. "The Tocantinzinho Paleoproterozoic Porphyry-Style Gold Deposit, Tapajós Mineral Province (Brazil): Geology, Petrology and Fluid Inclusion Evidence for Ore-Forming Processes." Minerals 9, no. 1 (January 5, 2019): 29. http://dx.doi.org/10.3390/min9010029.

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The Tocantinzinho gold deposit, located in the Tapajós Mineral Province, Amazonia, Brazil, is considered the largest gold deposit in the region. It is a stockwork-disseminated gold deposit, hosted in a 1982 ± 8 Ma hydrothermalized monzogranite of the Creporizão Intrusive Suite, with petrographic and geochemical characteristics of volcanic arc to post-collisional granites. Gold is mainly associated with phyllic alteration. Primary fluid inclusions trapped in the mineralization stages are H2O–NaCl and unsaturated and homogenize either to the vapor or to the liquid with Th(t) of 300–430 °C, salinity of 2–16 wt % NaCl eq. and density from 0.43 to 0.94 g/cm3. At these conditions, Au is expected to be transported as Au(HS)2− complexes and ore is deposited as the result of boiling in the first mineralizing stages and of mixing between magmatic fluid and meteoric water during the phyllic alteration. Compared with other deposits, Tocantinzinho has similarities with magmatic-hydrothermal oxidized calc-alkaline granite-related gold deposits classified as porphyry gold deposits but we classify as a porphyry-style gold deposit, as it lacks some characteristics of the Phanerozoic porphyry-type deposits. The results from this study can be used to elaborate and guide prospection models in Amazonia and in similar Proterozoic terrains.

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Ouziki, Mohamed, and Lahcen Taiqui. "Evaluation Exhaustive De La Diversité Des Plantes Aromatiques Et Médicinales De La Péninsule Tingitane (Maroc)." European Scientific Journal, ESJ 12, no. 15 (May 30, 2016): 210. http://dx.doi.org/10.19044/esj.2016.v12n15p210.

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Aromatic and Medicinal Plants (AMP) represent a large part of biodiversity. However, in the absence of a detailed record of this diversity, research and AMP development projects are generally limited to a small portion of ethnobotanical heritage. To guide prospection, exploitation and conservation studies of the existing potential, a comprehensive evaluation of the natural diversity of AMP is required. The western Rif region in northern Morocco, which area represents less than 1% of national territory, is home to about 50% of the Moroccan floristic richness (2053 species and infraspecific taxa). This heritage includes 630 taxa from which only 23 are currently exploited and merely 57% are recognized by ethno-botanists. Among these assets, a list is drawn up containing 106 taxa with a special conservation status (very rare or rare taxa, and / or endemic and / or threatened) and some of which are widely exploited. From a phytosociological point of view and based on an available database of 449 floristic samples, natural forest stands and matorrals contain about 27% of all MAP of the study area. These AMP organize almost half the floristic composition of sclerophyllous forests (oleaster, kermes oak and cork oak forest) and about a third of the richness of each of the other groups analyzed (thermophilic formations, pure fir, limestone mountains forest, calcifuges deciduous, maritime pine, matorrals). Mountain groups are the richest in exclusive, endemic, rare and endangered AMP.

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Anas, Bahi, Akhssas Ahmed, Ouadif Latifa, Ahmed Ait Errouhi, and Kawtar Ouatiki. "Contribution of geophysics for the characterization of ore deposits, case of the Bouarfa mine, Morocco." MATEC Web of Conferences 149 (2018): 02076. http://dx.doi.org/10.1051/matecconf/201814902076.

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Geophysical methods are one of the best ways to determine the potential of a mining area. Indeed, for the prospection of metalliferous deposits, the magnetic method remains essential as it makes it possible to characterize the extent and the depth of the anomalous bodies present in the prospected zone, mainly due to their reaction with the values of the total magnetic field. Thus, for the manganese mining zone of Bouarfa and more exactly Hammraouet, the genesis of the deposit is such that the manganese is generally associated with ferruginous minerals and clearly affect the total magnetic field. That said, the raw results obtained must imperatively be subjected to corrections to only keep the effect of the anomalous bodies on the magnetic field. Hence, we must proceed with the correction of the daytime effect then we eliminate the regional effects to get the map of the residual anomaly and finally we perform a reduction to the pole that will allow us to have well individualized and unipolar anomalies and thus allowing us to locate precisely the potentially mineralized axes. The synthesis of the various maps obtained by spatial interpolation of the data recorded in situ and corrected allows us to locate areas of mining interest and to determine the different tectonic phenomena that took place in our study area. In time, these maps will serve us to guide the subsequent mechanical surveys to confirm the results obtained by geophysical methods.

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Baksheev, Ivan A., Vsevolod Yu Prokof'ev, Georgii P. Zaraisky, Andrey F. Chitalin, Vasilii O. Yapaskurt, Yuri N. Nikolaev, Petr L. Tikhomirov, et al. "Tourmaline as a prospecting guide for the porphyry-style deposits." European Journal of Mineralogy 24, no. 6 (November 16, 2012): 957–79. http://dx.doi.org/10.1127/0935-1221/2012/0024-2241.

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Santos, Alex Álisson Bandeira, Paulo Roberto Freitas Neves, Fabricia Oliveira Oliveira, Danielle Devequi Gomes Nunes, and Bruna Aparecida Souza Machado. "Patent Analysis of the Development of Technologies Applied to the Combustion Process." Applied Sciences 12, no. 12 (June 9, 2022): 5858. http://dx.doi.org/10.3390/app12125858.

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The use of combustion in industrial activity is of paramount importance for economic and social development. However, combustion reactions are the main sources of atmospheric pollutant emissions. Given this reality, it is necessary to study new combustion techniques, such as the application of oxygen in the process, in order to increase the efficiency and productivity of the burning process and energy production. In addition, studies have reported the use of acoustic excitation, a low-investment technique that can promote higher rates of heat and mass transfer. Thus, the goal of this study was to bring data on the current scenario related to the application of these two technologies to the combustion process where, through the reported results, they can be used as a guide for companies’ decisions about new technologies and global trends to be identified. For this, a technological prospection was carried out which focused on patents to investigate the use of oxygen-enhanced combustion and acoustic excitation coupled to the combustion process; a total of 88 documents were found. Few documents applied acoustic excitation for process improvement, indicating that its use is recent; however, according to the literature, it is a promising field to be explored. Siemens AG was the main depositor, and ten primary inventors were identified. Germany and the United States were the countries with the highest number of filings. In the prospected documents, it was possible to identify that there is a need for the further investigation of the joint use of both techniques. These investigations may lead to the development of processes and devices that can provide economic and environmental gains for the energy industry.

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Hilgenfeld, Tim, Alexander Juerchott, Johann M. E. Jende, Peter Rammelsberg, Sabine Heiland, Martin Bendszus, and Franz S. Schwindling. "Use of dental MRI for radiation-free guided dental implant planning: a prospective, in vivo study of accuracy and reliability." European Radiology 30, no. 12 (September 22, 2020): 6392–401. http://dx.doi.org/10.1007/s00330-020-07262-1.

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Abstract Objectives To evaluate the accuracy and reliability of dental MRI for static guided implant surgery planning. Materials and methods In this prospective study, a 0.4-mm isotropic, artifact-suppressed, 3T MRI protocol was used for implant planning and surgical guide production in participants in need of dental implants. Two dentists decided on treatment plan. Surgical guides were placed intraorally during a subsequent reference cone beam computed tomography (CBCT) scan. Inter-rater and inter-modality agreement were assessed by Cohen’s kappa. For each participant, dental MRI and CBCT datasets were co-registered to determine three-dimensional and angular deviations between planned and surgically guided implant positions. Results Forty-five implants among 30 study participants were planned and evaluated (17 women, 13 men, mean age 56.9 ± 13.1 years). Inter-rater agreement (mean κ 0.814; range 0.704–0.927) and inter-modality agreement (mean κ 0.879; range 0.782–0.901) were both excellent for the dental MRI-based treatment plans. Mean three-dimensional deviations were 1.1 ± 0.7 (entry point) and 1.3 ± 0.7 mm (apex). Mean angular deviation was 2.4 ± 1.5°. CBCT-based adjustments of MRI plans were necessary for implant position in 29.5% and for implant axis in 6.8% of all implant sites. Changes were larger in the group with shortened dental arches compared with those for tooth gaps. Except for one implant site, all guides were suitable for clinical use. Conclusion This feasibility study indicates that dental MRI is reliable and sufficiently accurate for surgical guide production. Nevertheless, more studies are needed to increase its accuracy before it can be used for implant planning outside clinical trials. Key Points • An excellent reliability for the dental MRI-based treatment plans as well as agreement between dental MRI-based and CBCT-based (reference standard) decisions were noted. • Ideal implant position was not reached in all cases by dental MRI plans. • For all but one implant site surgical guides derived from dental MRI were sufficiently accurate to perform implant placement (mean three-dimensional deviations were 1.1 ± 0.7 (entry point) and 1.3 ± 0.7 mm (apex); mean angular deviation was 2.4 ± 1.5°).

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Lin, Chia-Cheng, Ching-Zong Wu, Mao-Suan Huang, Chiung-Fang Huang, Hsin-Chung Cheng, and Dayen Peter Wang. "Fully Digital Workflow for Planning Static Guided Implant Surgery: A Prospective Accuracy Study." Journal of Clinical Medicine 9, no. 4 (April 1, 2020): 980. http://dx.doi.org/10.3390/jcm9040980.

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The accuracy of static guided implant surgery (sGIS) using conventional planning workflow has been extensively examined; however, more information is required to justify the application of fully digital planning protocol. The purpose of this study was to investigate the clinical accuracy of sGIS with a fully digital planning workflow. Twenty-one partially edentulous patients were enrolled in this prospective study. Cone-beam computed tomography (CBCT) and intraoral scans were taken and superimposed by matching the dental surface images directly (surface registration protocol) or by matching fiducial markers on a stereolithographic (SLA) radiographic template fabricated from the digital data of the intraoral scan (fiducial marker registration protocol). Virtual implant treatment plans were then determined, and tooth-supported SLA surgical guides were fabricated according to the plans. Twenty-six implant surgeries were performed via the surgical guide by one surgeon. Pre- and post-operative CBCT images were superimposed, and the positional and angular deviations between placed and planned implants were measured with metrology software. A total of 43 fully guided implants were placed, in which 25 implants were planned with the surface registration protocol. Implants planned based on the surface registration protocol had a larger mean angular deviation than the fiducial marker registration protocol. No significant differences were found for any deviations of the examined variables. Within the limits of this study, we concluded that the clinical accuracy of the sGIS planned with a fully digital workflow was consistent with the conventional workflow for partially edentulous patients.

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Більше джерел

Дисертації з теми "Guide de prospection"

Lefeuvre, Nicolas. "Nouvelles méthodes d'exploration des ressources en hydrogène naturel (H2) : Le cas d'école du piémont Pyrénéen occidental." Thesis, Université Grenoble Alpes, 2022. http://www.theses.fr/2022GRALU009.

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L’existence de fluides géologiques riches en hydrogène (H2) doit nécessairement faire l’objet de travaux d’exploration afin de statuer sur le potentiel énergétique de cette éventuelle ressource décarbonée. Depuis plus d’un siècle de nombreuses exhalations naturelles d’H2 ont été mis en évidence. Or à ce jour il n’existe aucun guide d’exploration basé sur une méthodologie et sur des indicateurs robustes. La détection d’occurrence gazeuse en surface correspond bien évidemment à l’approche la plus efficace et la plus rapide à mettre en œuvre pour identifier des flux. Il n’en reste pas moins qu’un flux ne constitue pas une ressource pour autant, puisqu’à ce jour, l’homme n’exploite que les stocks de ressources énergétiques fossiles. Il sera donc important de développer un guide d’exploration non pas orienté uniquement sur une problématique de surface, mais aussi sur des considérations géologiques profondes intégrant le système hydrogène dans son entier de la source au piège ou à la fuite dans l’atmosphère.Au cours de ce travail de thèse nous proposons d’utiliser le cadre géologique du piémont nord Pyrénéen pour élaborer un guide d’exploration. La compilation des données bibliographiques a révélé un contexte prometteur pour un système H2 du fait d’un lien entre sources profondes, chemins de migration crustale, dynamique de circulation de fluides, et pièges sédimentaires. En effet le nord-ouest des Pyrénées et plus particulièrement le Bassin Mauléon est caractérisé par la présence i) d’un corps mantellique (<10 km) où les conditions pression-température sont favorables à la serpentinisation ; ii) d’accidents structuraux majeurs tels que le Chevauchement Frontal Nord Pyrénéens (CFNP) constituant des drains collecteurs de grande ampleur, iii) des gradients hydrauliques, conjugués à des gradients de température et de pressions qui permettent la mise en mouvement des fluides ; iv) des formations sédimentaires imperméables ou de couvertures comme les évaporites ou les argiles consitutant des pièges pour accumuler l’H2.Suite à cette étude préalable, nous avons mis en place une campagne d’analyses des gaz du sol (H2, CO2, 222Rn, O2, CH4) à l’échelle régionales. Cette campagne d’analyse réalisée sur plus de 7500 km2 a très vite permis de mettre en évidence une zone à très fortes anomalies en H2, CO2, et 222Rn sur le pourtour du Bassin de Mauléon. Cette découverte nous a permis de resserrer rapidement le maillage de prospection sur la partie nord du bassin de Mauléon. Une campagne d’analyses géochimiques et géophysiques a été réalisée à Sauveterre-de-Béarn afin de déterminer l’origine et le parcours des gaz à l’origine de cette anomalie. Sur la base de l'analyse des gaz du sol et des levés électromagnétiques, nous avons confirmé l'existence d'une faille drainant les fluides profonds. De plus, l’étude des données historiques des forages entrepris dans la région il y a plus de 50 ans, conjugué à une mise en perspective des dernières connaissances géologiques et géophysiques de la région, nous a permis de mettre en évidence des zones où l’H2 pourrait s’accumuler.Enfin une partie expérimentale de broyage de quartz et de roches de la région a été menée afin d’explorer de nouveaux mécanismes de production d’H2 le long des failles. Nous avons mis en évidence une très forte influence du rapport eau/roche (W/R) et du pH sur la production d’H2. Ces découvertes apportent un éclairage nouveau sur les mécanismes mécano-radicalaires de production d’H2 où la spéciation des sites des surface des minéraux sont des paramètres clés contrôlant la production d’H2. Nous révélons pour la première fois que le broyage du quartz en présence de solutions carbonatés induit la formation d’espèces carboxylates (formate, acétate, oxalate). En plus de produire de l’H2, les mécanismes mécano-radicalaires permettent donc de produire des espèces réduites du carbones pouvant constituer une source d’énergie pour les écosystèmes microbiens lithotrophe de subsurface
The existence of geological fluids rich in hydrogen (H2) rise the question about the energy potential of this carbon-free resource. For more than a century and throughout the world, numerous natural H2 seepages have been discovered. However, to date there is no exploration approach based on robust methodologies and pathfinders. The detection of H2 seepages at the surface is known to be the most ecient and straight forward approach to identify H2 flows. However, a gas flow does not necessarily constitute a resource, since to date, mankind only exploit reservoirs of fossil energy resources. Therefore, it is important to develop an exploration guide that is not only focusing on surface gas monitoring, but also considering a deep geological approach integrating the entire hydrogen system from source to trap or leakage into the atmosphere. Here, we propose to use the geological framework of the North Pyrenean foothills as a case study to develop this exploration guide. A literature review of the area revealed a promising geological setting for a H2 system due to a strong link between putative deep H2 sources, crustal-scale migration pathways, fluid circulation dynamics, and sedimentary traps. Indeed, the northwestern Pyrenees and particularly the Maul´eon Basin is characterised by the presence of i) an ultramafic mantle body located less than 10 km depth and under pressure-temperature conditions favourable to serpentinisation ; ii) major faults such as the North Pyrenean Frontal Thrust (NPFT) constituting large-scale flow convergence and drainage, iii) hydraulic gradients due to the presence of strong reliefs, combined with temperature and pressure gradients that trigger fluids ; iv) impermeable sedimentary formations or caprocks such as evaporites or claystones overlying porous reservoir rocks that can constitute traps for accumulating H2.Following this preliminary geological survey, we set up a soil gas exploration campaign (H2, CO2, 222Rn, O2, CH4) at the regional scale. These field measurments, carried out over more than 7,500 km2, revealed several hotspots with very high H2, CO2 and 222Rn concentrations anomalies around the Maul´eon Basin. This discovery allowed us to refine the mesh of the prospecting grid to the northern part of the Maul´eon Basin around the locality of Sauveterre-de-Béarn. Geochemical and geophysical measurements were carried out at Sauveterre-de-B´earn to determine the source and migration path of the gases at the origin of this anomaly. Based on soil gas analysis and electromagnetic surveys, we confirmed the existence of a fault draining deep fluids. In addition, the study of historical data from drilling carried out in the region more than fifty years ago, combined with the latest geological and geophysical knowledge of the region, enabled us to highlight zones where H2 could accumulate.Finally, an experimental part of comminution of quartz and rocks from the region was carried out in order to explore the reaction mechanisms of H2 production in active fault zones. We reveal the very strong influence of the water/rock ratio (W/R) and pH on H2 production. These findings shed new light on the mechano-radical mechanisms of H2 production where the efficiency of grinding as well as the speciation of mineral surface sites are key parameters controlling H2 production. We reveal for the first time that grinding of quartz in the presence of carbonate solutions induces the formation of carboxylate species (formate, acetate, oxalate). In addition to producing H2, the mechano-radical mechanisms thus allow the production of reduced carbon species that can constitute an energy source for subsurface lithotrophic microbial ecosystems

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Rodrigues, Diana Magalhães Cunha. "Prospecção geoquímica: estaurolita, ilmenita e magnetita como minerais traçadores para depósitos do tipo VMS." Universidade do Estado do Rio de Janeiro, 2011. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=3093.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Conselho Nacional de Desenvolvimento Científico e Tecnológico
A região de Itutinga foi alvo de estudos prospectivos por parte da empresa BP mineração na década de 80, onde foram encontradas mineralizações em lentes de sulfetos metálicos (Zn-Cu-Ag-Fe) associados a rochas komatiíticas peridotíticas e basaltos toleíticos (anfibolitos) do greenstone belts, nas proximidades da fazenda São Jerônimo, enquadrando-se em um depósito do tipo VMS. A partir destas informações encontradas na literatura propôs-se estudar a estaurolita, a magnetita e a ilmenita para, a partir da determinação do seu conteúdo em zinco, indicar a aplicabilidade destes três minerais como traçadores desses tipos de depósitos. Para isso foram coletadas amostras de sedimentos de corrente e concentrados de batéia na região próxima à ocorrência, no entorno da cidade de Itutinga, e também em uma região próxima a cidade de Itumirim, já que existem semelhanças litológicas entre as duas áreas. Os sedimentos de corrente, as frações magnéticas e as frações de 0,3A (separador eletromagnético Frantz) foram enviados para análises químicas por absorção atômica e ICP-OES. Os concentrados de batéia foram descritos, separando-se cristais de estaurolita de cada amostra coletada, e analisando-os em MEV-EDS para determinação da química mineral. Os resultados dos sedimentos de corrente apontaram que os pontos da fazenda São Jerônimo (ME-03, Itutinga 51,7 ppm de Zn) e o ponto do Ribeirão Santa Cruz, (ME-06, Itumirim 36,1 ppm de Zn) foram os que apresentaram melhores resultados, indicando anomalias em zinco nas duas áreas estudadas . As estaurolitas, retiradas dos concentrados de batéia de cada ponto estudado, foram divididas em três conjuntos, de acordo com os teores de ZnO encontrados: 1 - entre 2,96% e 3,25% de ZnO em peso; 2 - entre 2,03% e 2,76% de ZnO em peso; 3 - < 1,67% de ZnO em peso, sendo comparável com outras estaurolitas encontradas em diversos depósitos de Zn do mundo, como Dry River, Austrália e Palmeirópolis Goiás. Assim, as estaurolitas apresentam bons resultados como minerais indicadores na área estudada. Em relação as magnetitas e ilmenitas estudadas, o número de amostras coletadas no presente estudo foram muito pequenas para se ter informações conclusivas sobre o papel destes minerais como traçadores. Por outro lado, os resultados das análises químicas nos concentrados de ilmenita (até 856 ppm de Zn) e nos concentrados de magnetita (até 216 ppm de Zn), indicam a disponibilidade deste metal nas áreas estudadas. Assim, é possível se detectar a presença do zinco por dois meios: através de sedimentos de corrente, através de halos de dispersão química do elemento zinco, e através dos minerais resistatos (estaurolita zincífera, magnetita e ilmenita), a partir de uma dispersão clástica do grão.
The Itutinga region was studied for BP mineration in 80s , where they found sulphide mineralization in lenses (Zn-Cu-Ag-Fe) associated with komatiitic peridotite rocks and tholeitic basalts (amphibolites) of greenstone belts, near of Fazenda São Jerônimo. With this information in the literature the propose is study the staurolite, magnetite and ilmenite for indicating the applicability of these three minerals as tracers of these types of mineralization. For this, samples of stream sediment and panning concentrates in the region near the city of Itutinga, and also in a region near the city of Itumirim. The stream current, magnetic fractions and ilmenite fractions were sent to chemistry analyses (Atomic absorption and ICP-OES), and the panning concentrates were analyzed for the separating of staurolite crystals, and sent to SEM-EDS. The stream sediments results showed that the point of Fazenda São Jerônimo (ME-03, Itutinga 51,7 ppm of Zn) and the point of Ribeirão Santa Cruz (ME-06, Itumirim 36,1 ppm of Zn) were presented the best result. The staurolite of panning concentrates were divided into three groups according to levels of ZnO matched: 1 - between 2.96% and 3.25% by weight of ZnO, 2 - from 2, 03% and 2.76% by weight of ZnO, 3 - <1.67% ZnO by weight, comparable with other staurolite found in many zinc deposits in the world, such as Dry River, Australia and Palmeirópolis Goiás. Thus, the staurolite show good results as indicator minerals in the area. With respect to magnetite and ilmenite concentrates, the number of samples collected in both areas was too small to have conclusive information. On the other hand, the results of the chemical ilmenite (up to 856 ppm Zn) and magnetite (up to 216 ppm Zn), indicate the availability of this metal in the areas studied. Thus, it is possible to detect the presence of zinc by two means: through stream sediments through chemical dispersion halos of zinc, minerals and through resistive minerals (zincian staurolite, magnetite and ilmenite), from a crystal clastic dispersion.

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Kane, Mustapha. "Sur les caractères ophiolitiques du complexe ultrabasique-basique du proterozoïque supérieur des Mauritanides centrales : Métallogénèse et géochimie des indices de métaux de base associés et guides de prospection (pour une ophiolitisation au Précambrien)." Nancy 1, 1986. http://www.theses.fr/1986NAN1A027.

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Étude pétrographique et géochimique des ultrabasites serpentinisées des chromites associées et du volcanisme basique d'el-aoujda. L'ensemble constitue l'ossature d'un cortège ophiolitique dont la disposition est inversée par le biais d'une technique chevauchante. L'étude réalisée sur la partie volcanique révèle une nature de tholéites océaniques avec un aspect calco-alcalin par endroits, ajoutée d'une lignée alcaline. Ce complexe recéle des minéralisations métalligènes (CR, NI, CO, CU, ETC. . . ) dont certaines ont valeur d'indices. On tire certaines conclusions sous forme de guides de prospection

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Manning, Cameron Alan. "A guide for the prospective Navy contractor." Thesis, University of Florida, 1991. http://hdl.handle.net/10945/43776.

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The United States Naval Facilities Engineering Command awarded over 1-billion dollars in construction contracts in 1990 and is expected to increase that figure in 1991. These contracts will be awarded all over the world. They will range in size from five thousand dollar playgrounds to hundred million dollar buildings. The objective of this paper is to develop a guide that will allow contractors to make a smooth transition from contracting with other sources into contracting with the United States Navy. It will cover various areas that often lead to difficulties for contractors unfamiliar with Navy construction contracting. Also the guide will provide an overview of the entire contracting experience from reading the advertisement for the job, to the warranty period after construction. It should be understood that the information presented in this guide applies to the most common type of construction contract used by the Navy - fixed price/lump sum.

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Netels, Victor. "Définition des guides géologiques pour la prospection d'évaporites continentales." Doctoral thesis, Universite Libre de Bruxelles, 1992. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212905.

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Jump, Michael. "Prospective sky guides: developing guidelines for pilot vision aids." Thesis, University of Liverpool, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.569574.

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Aktug, Fatma Pelin. "Comparison Of Fidic Conditions Of Contract (1999) And Uncitral Legal Guide From Prospective Disputes And Claims Perspective." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614297/index.pdf.

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Charrier, Marjorie. "Ergonomie et design dans une démarche de conception de produits centrée sur les besoins des personnes." Thesis, Belfort-Montbéliard, 2016. http://www.theses.fr/2016BELF0300/document.

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Lévolution des modes de vie conduit à une évolution des besoins et des souhaits des personnes, en quête «d'expérience », de « bien-être » et de « plaisir » à travers les produits qu'elles utilisent. Les entreprises doiventaujourd'hui satisfaire et séduire ces personnes de plus en plus exigeantes, en étant source d'innovation et denouveauté. Ainsi, elles s'intéressent de plus en plus dans leur démarche de conception de produits à une meilleureprise en compte du facteur humain. Faire vivre aux personnes des expériences positives et de qualité, demandeune démarche spécifique qui les placent au centre des préoccupations des acteurs-métier de la conception deproduits. Dans ce contexte, le processus de conception requiert l'intervention de différentes disciplines sensiblesjustement au facteur humain. Ainsi dans le cadre de nos travaux de recherche, nous nous sommes intéressés aurapprochement de l'ergonomie et du design, deux disciplines sensibles aux personnes qui évoluent vers denouvelles pratiques : le design pour « des besoins » et l'ergonomie prospective. Nous axons nos travaux derecherche sur les pratiques de ces deux disciplines qui convergent vers une vision commune, prospective et «humaniste » de la conception de produits, pour une meilleure prise en compte des personnes. Le principal enjeuscientifique de notre travail est de mieux cerner les pratiques actuelles, de l'ergonomie et du design dans uncontexte de conception de produits. Ceci, pour proposer à ces acteurs-métier une démarche (IDLifeS) et des outils(Guides de Connaissances), interdisciplinaires, qui correspondent à l'évolution de leurs pratiques respectives et quileur permettent de co-concevoir des produits et des situations de vie qui correspondent aux besoins, aux souhaits etaux caractéristiques des personnes
Lifestyles change led to the development of the needs and wishes of people who are looking for "experience", "wellbeing"and "pleasure" through the products they use. Companies must now satisfy and seduce these people whoare increasingly exigent, by being a source of innovation and new ideas. Thus, companies are more and moreinterested in their product design process, in order to better take into account, the human factor. It requires aspecific approach to make people have positive and quality experiences. In this approach, people are at the heart ofthe concerns of the product design actors. In this context, the design process requires the intervention of differentdisciplines rightly sensitive to human factor. In our research, we focused on ergonomics and design, two disciplinessensitive to people who are moving towards new practices: design for "needs" and the prospective ergonomics. Ourresearch is focus on the practices of these two disciplines that converge on a common vision, which is a prospectiveand "humanist" one, of the product design for a better integration of people. The main scientific challenge of ourwork is to better understand ergonomics and design current practices in a product design context. This, to suggestto these actors an approach (IDLifeS) and tools (Knowledge Guides), interdisciplinary, which correspond to thedevelopment of their practices and offer them to co-design products and life situations which correspond to theneeds, wishes and characteristics of people

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Soo, Lingfeng, and n/a. "A comparison of fluorescence-guided Er:YAG laser debridement and mechanical therapy for the non-surgical treatment of chronic periodontitis : a controlled prospective clinical study." University of Otago. School of Dentistry, 2008. http://adt.otago.ac.nz./public/adt-NZDU20090216.150022.

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Aims: The aim of this study was to compare two different methods of root surface debridement for the treatment of moderate to advanced chronic periodontitis; fluorescence-guided laser debridement using an Er:YAG laser (ERL) or mechanical scaling and root-planing (SRP/UL) using an ultrasonic scaler and hand instruments. The effectiveness of each treatment method was assessed by patient-centred outcomes such as clinical periodontal measurements and patients� overall experience. Methods: This study was a phase IV randomised controlled clinical trial, with all examinations and treatments carried out between 1st February 2007 and 7th March 2008. Using a split-mouth design, each patient received both test and control treatments. The control quadrants received scaling and root planing using a Piezon� (EMS, Nyon, Switzerland) ultrasonic scaler and Gracey curettes, while the test quadrants received fluorescence-guided Er:YAG laser root debridement (Keylaser 3, Kavo, Biberach, Germany; panel settings 160mJ/pulse, 10Hz, water spray, 655nm fluorescence calculus-detection system). Full mouth clinical measurements [plaque index (PlI), probing depth (PD), gingival recession (GR), bleeding on probing (BOP), and clinical attachment level (CAL)] were recorded at baseline, and 6 and 12 weeks post-therapy. A patient questionnaire was used to evaluate patient perception in terms of pain, discomfort and satisfaction during treatment, and 24 hours and one week post-treatment. A wash-out period of 6 weeks enabled each patient to evaluate their experience of each treatment on its own merit. Results: Twenty-eight patients received both treatments and completed the patient perception questionnaire. No significant difference was found between ERL and SRP/UL in terms of pain and discomfort during treatment, and 24 hours and one week post-treatment. In terms of patient satisfaction, none of the patients rated ERL more favourably than SRP/UL immediately following treatment, however no significant difference was found 24 hours later and one week post-therapy. Complete clinical data was collected for 22 patients, four of whom increased their tobacco consumption to [greater than or equal to] 10 cigarettes/day. Therefore, the analysis of clinical data was carried out twice with respect to patients� smoking status. In patients who smoked [less than or equal to] 9 cigarettes/day (n = 18 patients), ERL provided less PD reduction at 6 and 12 weeks (p < 0.001, 6 weeks; p < 0.05, 12 weeks) than SRP/UL. Even though SRP/UL quadrants had a greater proportion of sites with BOP (% BOP) at baseline, at 6 weeks they showed a significantly greater reduction in %BOP (p = 0.0123) than ERL quadrants, however there was with no significant difference in bleeding scores (p = 0.202) at 12 weeks post-therapy. When patients who smoked [greater than or equal to] 10 cigarettes/day were included in the analyses (n = 22 patients), ERL resulted in less BOP reduction and PD reduction at 6 and 12 weeks following treatment (BOP reduction: 6 weeks p < 0.05, 12 weeks p < 0.001; PD reduction: 6 weeks p < 0.01, 12 weeks p < 0.05). Although statistically significant, the differences between the treatment groups were very small and were not clinically significant. Conclusion: The use of ERL for root surface debridement offers no significant advantages over mechanical therapy in the treatment of moderate to advanced chronic periodontitis, in terms of clinical outcomes and patient perception of pain, discomfort or satisfaction related to the procedure.

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Ben, Hassine Soumaya. "Évaluation et requêtage de données multisources : une approche guidée par la préférence et la qualité des données : application aux campagnes marketing B2B dans les bases de données de prospection." Thesis, Lyon 2, 2014. http://www.theses.fr/2014LYO22012/document.

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Avec l’avènement du traitement distribué et l’utilisation accrue des services web inter et intra organisationnels alimentée par la disponibilité des connexions réseaux à faibles coûts, les données multisources partagées ont de plus en plus envahi les systèmes d’informations. Ceci a induit, dans un premier temps, le changement de leurs architectures du centralisé au distribué en passant par le coopératif et le fédéré ; et dans un deuxième temps, une panoplie de problèmes d’exploitation allant du traitement des incohérences des données doubles à la synchronisation des données distribuées. C’est le cas des bases de prospection marketing où les données sont enrichies par des fichiers provenant de différents fournisseurs.Nous nous intéressons au cadre particulier de construction de fichiers de prospection pour la réalisation de campagnes marketing B-to-B, tâche traitée manuellement par les experts métier. Nous visons alors à modéliser le raisonnement de brokers humains, afin d’optimiser et d’automatiser la sélection du « plan fichier » à partir d’un ensemble de données d’enrichissement multisources. L’optimisation en question s’exprimera en termes de gain (coût, qualité) des données sélectionnées, le coût se limitant à l’unique considération du prix d’utilisation de ces données.Ce mémoire présente une triple contribution quant à la gestion des bases de données multisources. La première contribution concerne l’évaluation rigoureuse de la qualité des données multisources. La deuxième contribution porte sur la modélisation et l’agrégation préférentielle des critères d’évaluation qualité par l’intégrale de Choquet. La troisième contribution concerne BrokerACO, un prototype d’automatisation et d’optimisation du brokering multisources basé sur l’algorithme heuristique d’optimisation par les colonies de fourmis (ACO) et dont la Pareto-optimalité de la solution est assurée par l’utilisation de la fonction d’agrégation des préférences des utilisateurs définie dans la deuxième contribution. L’efficacité du prototype est montrée par l’analyse de campagnes marketing tests effectuées sur des données réelles de prospection
In Business-to-Business (B-to-B) marketing campaigns, manufacturing “the highest volume of sales at the lowest cost” and achieving the best return on investment (ROI) score is a significant challenge. ROI performance depends on a set of subjective and objective factors such as dialogue strategy, invested budget, marketing technology and organisation, and above all data and, particularly, data quality. However, data issues in marketing databases are overwhelming, leading to insufficient target knowledge that handicaps B-to-B salespersons when interacting with prospects. B-to-B prospection data is indeed mainly structured through a set of independent, heterogeneous, separate and sometimes overlapping files that form a messy multisource prospect selection environment. Data quality thus appears as a crucial issue when dealing with prospection databases. Moreover, beyond data quality, the ROI metric mainly depends on campaigns costs. Given the vagueness of (direct and indirect) cost definition, we limit our focus to price considerations.Price and quality thus define the fundamental constraints data marketers consider when designing a marketing campaign file, as they typically look for the "best-qualified selection at the lowest price". However, this goal is not always reachable and compromises often have to be defined. Compromise must first be modelled and formalized, and then deployed for multisource selection issues. In this thesis, we propose a preference-driven selection approach for multisource environments that aims at: 1) modelling and quantifying decision makers’ preferences, and 2) defining and optimizing a selection routine based on these preferences. Concretely, we first deal with the data marketer’s quality preference modelling by appraising multisource data using robust evaluation criteria (quality dimensions) that are rigorously summarized into a global quality score. Based on this global quality score and data price, we exploit in a second step a preference-based selection algorithm to return "the best qualified records bearing the lowest possible price". An optimisation algorithm, BrokerACO, is finally run to generate the best selection result

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Smith, Pat. Prospection des minéraux et tourisme: Un guide. Sudbury, Ont: Ministère du développment du Nord et des mines de l'Ontario, 1991.

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Le Zakhia: Guide des mots croisés et du scrabble : instrument de connaissance et de prospection. Monaco: Éd. du Rocher, 1991.

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Richard, Hudson. A field guide to gold, gemstone and mineral sites of British Columbia. Madeira Park, BC: Harbour Pub., 2006.

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A field guide to gold, gemstone, and mineral sites of British Columbia. Victoria, BC: Orca Book Publishers, 1997.

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Fifty Fife walks: Current and prospective. (St. Andrews) ((6 Shorehead, St. Andrews, Fife KY16 9RG)): (O. B. Silver), 1988.

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Silver, Owen. Fife and Kinross-shire walks: Current and prospective. 6th ed. (St. Andrews) ((6 Shorehead, St. Andrews, Fife KY16 9RG)): (O. B. Silver), 1988.

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Borst, Alan D. Guide for prospective agricultural cooperative exporters. Washington, D.C: U.S. Dept. of Agriculture, Agricultural Cooperative Service, 1990.

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Stewart, Frederick J. The dowsers guide to gold prospecting. [Johnson City, TN] (P.O. Box 267, Johnson City 37601): F.J. Stewart, 1987.

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Manning, Cameron Alan. A guide for the prospective Navy contractor. Springfield, Va: Available from the National Technical Information Service, 1991.

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Jury manual: A guide for prospective jurors. Houston, Tex: Metro Pub., 1985.

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Banks, T. "Reader’s Guide to String Duality and Matrix Theory." In Quantum Field Theory: Perspective and Prospective, 19–34. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4542-8_2.

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Lasker, Barry M., Helmut Jenkner, and Jane L. Russell. "The Guide Star Catalog. I. Overview, History, and Prospective." In Mapping the Sky, 229–33. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3063-6_32.

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Chan, Agnes Sui Yin, Yvonne Ming Yee Han, and Mei-chun Cheung. "Chinese Chan-Based Prospective Neuropsychological Intervention for Autistic Children." In Comprehensive Guide to Autism, 2333–55. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-4788-7_142.

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Chen, Yiping, and Robert Clarke. "Verification and Adjudication of Health Outcomes in Prospective Cohort Studies." In Population Biobank Studies: A Practical Guide, 123–43. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7666-9_6.

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Grice, Laura F., and Bernard M. Degnan. "How to Build an Allorecognition System: A Guide for Prospective Multicellular Organisms." In Evolutionary Transitions to Multicellular Life, 395–424. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9642-2_19.

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Allinc, Anaïs, Béatrice Cahour, and Jean-Marie Burkhardt. "The Guided Imaginary Projection, a New Methodology for Prospective Ergonomics." In Advances in Intelligent Systems and Computing, 1340–47. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96071-5_135.

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Aramaki, Mitsuko, Richard Kronland-Martinet, Sølvi Ystad, Jean-Arthur Micoulaud-Franchi, and Jean Vion-Dury. "Prospective View on Sound Synthesis BCI Control in Light of Two Paradigms of Cognitive Neuroscience." In Guide to Brain-Computer Music Interfacing, 61–87. London: Springer London, 2014. http://dx.doi.org/10.1007/978-1-4471-6584-2_4.

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Buchner, Josef, and Martin Plessl. "Moving Volleyball Coaches Education Online: A Case Study." In Global Perspectives on Educational Innovations for Emergency Situations, 231–40. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-99634-5_23.

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AbstractTraditionally, volleyball coaches’ education has been conducted physically in the gym and classroom, but due to Covid-19 and the actions needed to contain the pandemic, that was no longer possible in the spring of 2020. Instead of canceling the already planned course we decided to move the course online. The development process was guided by the question if we can teach volleyball-specific skills online. As a result, we designed a fully online blended learning course with a problem-centered approach and authentic video-based tasks. A total of 23 prospective coaches took part in the course. Skills acquisition was measured using a pretest-posttest design revealing a large effect of our design on skills acquisition. Additionally, we surveyed participants attitudes towards the learning design. The results show that prospective coaches were satisfied with the design and perceived the online learning course as useful for volleyball coaches’ education. Based on the results, we can recommend the combination of videos and interactive content to provide authentic problem-centered tasks to facilitate skills online in volleyball coaches’ education.

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Zavala, María del Rosario, and Kathleen Jablon Stoehr. "From Community Exploration to Social Justice Mathematics: How Do Mathematics Teacher Educators Guide Prospective Teachers to Make the Move?" In Transforming Mathematics Teacher Education, 91–103. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-21017-5_7.

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Biron, Michel. "Plastics Sustainability: Prospective." In A Practical Guide to Plastics Sustainability, 595–627. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-821539-5.00012-4.

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Brat, Hugues G., Tarik Bouziane, Jean Lambert, and Luisa Divano. "CT-guided Percutaneous Laser Disc Decompression (PLDD): prospective clinical outcome." In SPIE Proceedings, edited by Leonardo Longo, Alfons G. Hofstetter, Mihail-Lucian Pascu, and Wilhelm R. A. Waidelich. SPIE, 2004. http://dx.doi.org/10.1117/12.584332.

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Yin, Yan, Xian-Wei Ye, Jiang-Wei Ma, Guo-Wu Zhou, Bin Jiang, and Gang Hou. "Ultrasonic elastography guided transthoracic pleural biopsy: a prospective pilot study." In ERS International Congress 2020 abstracts. European Respiratory Society, 2020. http://dx.doi.org/10.1183/13993003.congress-2020.2790.

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Lee, Wha Yong, Shoaib Faruqi, Ahmed Fahim, and Richard Teoh. "Ultrasound Guided Cutting Needle Biopsy Of The Pleura - A Prospective Study." In American Thoracic Society 2011 International Conference, May 13-18, 2011 • Denver Colorado. American Thoracic Society, 2011. http://dx.doi.org/10.1164/ajrccm-conference.2011.183.1_meetingabstracts.a4626.

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Dalal, A., A. Maydeo, and G. Patil. "OUTCOMES OF ENDOSCOPIC ULTRASOUND GUIDED BILIARY DRAINAGE - A PROSPECTIVE OBSERVATIONAL STUDY." In ESGE Days. © Georg Thieme Verlag KG, 2020. http://dx.doi.org/10.1055/s-0040-1704453.

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Simonneau, Yannick, Julia Ballouhey, Gilles Mangiapan, Philippe Richard, Sophie Laroumagne, Cezar Matau, Julien Dutilh, Ahmed Boubaya, and Boris Melloni. "Ultrasound-guided lung biopsies performed by pulmonologist: a French prospective study." In ERS International Congress 2019 abstracts. European Respiratory Society, 2019. http://dx.doi.org/10.1183/13993003.congress-2019.pa4833.

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Godino, Juan, Carmen Batanero, Rafael Roa, and Miguel Wilhelmi. "Assessing and developing pedagogical content and statistical knowledge of primary school teachers through project work." In Joint ICMI/IASE Study: Teaching Statistics in School Mathematics. International Association for Statistical Education, 2008. http://dx.doi.org/10.52041/srap.08401.

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In this paper we describe a model of pedagogical content knowledge with a formative cycle directed to simultaneously increase the teachers’ statistical and pedagogical knowledge. In this cycle, teachers are first given a statistical project to work with and then carry out a didactical analysis of the project. An analysis guide, based on the notion of didactical suitability, helps increase the teachers’ competence related to the different components of pedagogical content knowledge and their ability to carry out didactical analyses. At the same time it provides the teacher educator with information regarding the future teachers’ previous knowledge and learning. Results of experimenting with this formative cycle for a particular project in a group of 55 prospective teachers indicated a need for better statistics preparation of these teachers and illustrated the usefulness of the formative cycle and analysis guide proposed.

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Pathak, Soumi. "Changing trends in coagulation profile of 30 patients undergoing CRS with HIPEC in the peri-operative period." In 16th Annual International Conference RGCON. Thieme Medical and Scientific Publishers Private Ltd., 2016. http://dx.doi.org/10.1055/s-0039-1685386.

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Background: With advent of surgical advancements like HIPEC several unstudied pathophysiological aspects need to be evaluated. We studied the trends in coagulation profile in patients undergoing CRS with HIPEC in the peri-operative period, utilizing Thromboelastography (TEG) in comparison with standard coagulation tests. The utility of TEG as a guide for transfusion of blood products was also evaluated. Materials and Methods: It was a Prospective observational Cohort study which included 30 consecutive patients undergoing CRS with HIPEC at RGCI in 2015. Methodology: Preoperatively standard coagulation tests were done as a baseline. Intra-operative arterial blood samples were collected for ABG, PT, APTT, and TEG at following time points: before starting of HIPEC, after completion of HIPEC and on 1 and 2 postoperative days. Statistical analysis was done using Chi-square test and unpaired t-test for categorical and continuous variables. Pearson’s correlation coefficient was calculated for analysing the correlation between the variables. P < 0.05 was considered statistically significant. Results: A strong correlation was observed between PT & R values of TEG. Similar correlation was also observed between the α angle, MA of TEG and platelet count throughout the peri-operative period. Immediately post HIPEC, we observe value of APPT decreases while the other parameters of coagulation profile showed a rising trend. R value showed rising trend after CRS, a dip after HIPEC followed by a rising trend on first post operative day which normalizes only after second post operative day. It gives a mixed picture of both hypo and hyper coagulable state. α angle, MA rise immediately after HIPEC and continue to rise till the second postoperative day. There was no requirement of transfusion of blood and blood products as guided by the TEG findings and no clinical evidence of any bleeding or thromboembolic episode occurred. Conclusion: To conclude, our study demonstrated TEG to be a useful and comprehensive tool to assess coagulopathy and accordingly guide blood product transfusion in patients undergoing CRS with HIPEC.

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Arjan, S., and M. Imran Khan. "B27 Ultrasound guided supraclavicular vs ultrasound guided axillary brachial plexus block, which one is superior? A prospective randomized comparison." In ESRA Abstracts, 39th Annual ESRA Congress, 22–25 June 2022. BMJ Publishing Group Ltd, 2022. http://dx.doi.org/10.1136/rapm-2022-esra.102.

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Giovannini, M., F. Caillol, JP Ratone, C. Pesenti, and P. Niccoli. "EUS GUIDED RFA OF PNETS: RESULTS OF A PROSPECTIVE STUDY IN 11 PATIENTS." In ESGE Days. © Georg Thieme Verlag KG, 2020. http://dx.doi.org/10.1055/s-0040-1704250.

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Doddi-Kumar, M., K. Butterworth, K. Patel, and D. Herlekar. "ESRA19-0101 Shamrock ultrasound guided psoas catheter for revision hip arthroplasty – prospective audit." In Abstracts of the European Society of Regional Anesthesia, September 11–14, 2019. BMJ Publishing Group Ltd, 2019. http://dx.doi.org/10.1136/rapm-2019-esraabs2019.429.

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Douglas G. Hall, Sera E. White, Julie A. Brizzee, and Randy D. Lee. User's Guide Virtual Hydropower Prospector Version 1.1. Office of Scientific and Technical Information (OSTI), November 2005. http://dx.doi.org/10.2172/911799.

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Henderson, P. J. Drift composition and surficial geology, MacQuoid Lake area, (NTS 55 M/7 and 55 M/10), Kivalliq Region, Nunavut: a guide to drift prospecting. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2000. http://dx.doi.org/10.4095/211803.

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Miller, Kaleigh. US Guided Management of Undifferentiated Dyspneic Patient in the ED. University of Tennessee Health Science Center, March 2020. http://dx.doi.org/10.21007/com.lsp.2020.0001.

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Анотація:

Intro: Undifferentiated dyspnea can be a complicated presentation muddled by patient comorbidities and similar symptomology shared among etiologies. Some studies have shown increased mortality and length of stay in the hospital when incorrectly initially diagnosed in the ED. US has been shown more effective at differentiating these causes and improves diagnostic accuracy. This study will implement US exam upon initial exam of patient and chart time to diagnosis/treatment, length of stay in ED, length of stay in hospital admissions versus discharge rates, and 30 day mortality. ADHF and COPD/asthma patient differentiation will be the focus. Methods: Prospective cohort study of more than 18 years that present with the primary complaint of dyspnea with more than one complicating comorbid condition. Initial exam by physician will be accompanied by cardiothoracic US previously verified. Results: Study powered by previous year average of time to diagnosis of institution. Patient characteristics, distribution by diagnostic category, and characteristics found on US in correlation with diagnosis will be included for multivariate analysis. Conclusions: We expect to see a singificant difference in our time to diagnosis/treatment and mortality rate.

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