Bibliographies thématiques / Savannah Science Museum (Savannah, Ga.)

Littérature scientifique sur le sujet « Savannah Science Museum (Savannah, Ga.) »

Auteur : Grafiati
Publié le 27 juillet 2024
Mis à jour le 29 juillet 2024

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Articles de revues sur le sujet "Savannah Science Museum (Savannah, Ga.)"

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Boczek, Jan, et Robert Davis. « Three New Species of Eriophyid Mites from Georgia Coastal Islands (Acari : Eriophyoidea) ». Journal of Entomological Science 25, no 1 (1 janvier 1990) : 125–33. http://dx.doi.org/10.18474/0749-8004-25.1.125.

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Three new species of eriophyid mites - Platyphytoptus warkus from Pinus elliottii Engelm. (Pinaceae), Apodiptacus liquidambarus from liquidambar styraciflua L. (Hamamelidaceae) and Diptiloplatus pulaski from Rhus glabra L. (Anacardiaceae) - are described. All species were collected from the coastal barrier islands near Savannah, GA, U.S.A.
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Guțu, Modest, et Iorgu Petrescu. « Richard W. Heard (February 14, 1939 &ndash ; November 2, 2022) ». Travaux du Muséum National d’Histoire Naturelle “Grigore Antipa” 65, no 2 (31 décembre 2022) : 199–204. http://dx.doi.org/10.3897/travaux.65.e99011.

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Professor Dr. Richard Willis Heard, a longtime and outstanding collaborator of the “Grigore Antipa” National Museum of Natural History of Bucharest, passed away on November 2, 2022. Richard was born on February 14, 1939 in Savannah, Georgia (USA). He was a graduate of Savannah Country Day School and attended the University of Georgia, receiving his BS and MS degree in Zoology. He received his PhD degree in Biology at the University of Southern Mississippi (1976). He worked for more than 35 years at the Gulf Coast Research Laboratory (The University of Southern Mississippi), passing through various hierarchical steps, up to that of Head of the Invertebrate Zoology Section. He was drawn to know the marine invertebrates of the Gulf of Mexico, Caribbean Sea, and western Atlantic Ocean. His research focused primarily on the study of peracarid crustaceans. Also he mentored many students and young researchers specializing in marine biology.
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Wuest, Caroline E., Thomas C. Harrington, Stephen W. Fraedrich, Hye-Young Yun et Sheng-Shan Lu. « Genetic Variation in Native Populations of the Laurel Wilt Pathogen, Raffaelea lauricola, in Taiwan and Japan and the Introduced Population in the United States ». Plant Disease 101, no 4 (avril 2017) : 619–28. http://dx.doi.org/10.1094/pdis-10-16-1517-re.

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Laurel wilt is a vascular wilt disease caused by Raffaelea lauricola, a mycangial symbiont of an ambrosia beetle, Xyleborus glabratus. The fungus and vector are native to Asia but were apparently introduced to the Savannah, GA, area 15 or more years ago. Laurel wilt has caused widespread mortality on redbay (Persea borbonia) and other members of the Lauraceae in the southeastern United States, and the pathogen and vector have spread as far as Texas. Although believed to be a single introduction, there has been no extensive study on genetic variation of R. lauricola populations that would suggest a genetic bottleneck in the United States. Ten isolates of R. lauricola from Japan, 55 from Taiwan, and 125 from the United States were analyzed with microsatellite and 28S rDNA markers, and with primers developed for two mating-type genes. The new primers identified isolates as either MAT1 or MAT2 mating types in roughly equal proportions in Taiwan and Japan, where there was also high genetic diversity within populations based on all the markers, suggesting that these populations may have cryptic sex. Aside from a local population near Savannah and a single isolate in Alabama that had unique microsatellite alleles, the U.S. population was genetically uniform and included only the MAT2 mating type, supporting the single introduction hypothesis. This study suggests the importance of preventing a second introduction of R. lauricola to the United States, which could introduce the opposite mating type and allow for genetic recombination.
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Haas, Kevin, et Alexandra Muscalus. « CHARACTERIZING TRAILING WAVES FROM CARGO SHIP WAKE ». Coastal Engineering Proceedings, no 37 (1 septembre 2023) : 152. http://dx.doi.org/10.9753/icce.v37.management.152.

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Low-frequency (LF) cargo ship wake is a major source of hydrodynamic energy in shipping channels, where it has increasingly been linked to shoreline erosion. The LF wake consists of a drawdown called the “Bernoulli depression,” a return surge, and finally a series of trailing waves that may persist longer than 30 minutes after the vessel passage. While the Bernoulli depression and surge are well-explained by conservation principles, we presently lack a robust explanation of the trailing waves. They are a ubiquitous feature observed at many locations (e.g. Garrel, Lopez, and Collins, 2008), and have frequently been attributed to cross-channel seiching; however, field measurements from the Savannah River, GA, USA suggested that some of the waves may have alongshore progressive characteristics, which contradicts this assumption.
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Werth, David, et Robert Buckley. « The Application of a Genetic Algorithm to the Optimization of a Mesoscale Model for Emergency Response ». Journal of Applied Meteorology and Climatology 61, no 4 (avril 2022) : 329–43. http://dx.doi.org/10.1175/jamc-d-21-0107.1.

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Abstract Besides solving the equations of momentum, heat, and moisture transport on the model grid, mesoscale weather models must account for subgrid-scale processes that affect the resolved model variables. These are simulated with model parameterizations, which often rely on values preset by the user. Such “free” model parameters, along with others set to initialize the model, are often poorly constrained, requiring that a user select each from a range of plausible values. Finding the values to optimize any forecasting tool can be accomplished with a search algorithm, and one such process—the genetic algorithm (GA)—has become especially popular. As applied to modeling, GAs represent a Darwinian process: an ensemble of simulations is run with a different set of parameter values for each member, and the members subsequently judged to be most accurate are selected as “parents” who pass their parameters onto a new generation. At the U.S. Department of Energy’s Savannah River Site in South Carolina, we are applying a GA to the Regional Atmospheric Modeling System (RAMS) mesoscale weather model, which supplies input to a model to simulate the dispersion of an airborne contaminant as part of the site’s emergency response preparations. An ensemble of forecasts is run each day, weather data are used to “score” the individual members of the ensemble, and the parameters from the best members are used for the next day’s forecasts. As meteorological conditions change, the parameters change as well, maintaining a model configuration that is best adapted to atmospheric conditions. Significance Statement We wanted to develop a forecasting system by which a weather model is run over the Savannah River Site each day and repeatedly adjusted according to how well it performed the previous day. To run the model, a series of values (parameters) must be set to control how the model will calculate winds, temperatures, and other desired variables. Each day the model was run several times using different combinations of these parameters and later compared with observed meteorological conditions. Parameters that produced the most accurate forecasts were preferentially reused to create the forecasts for the next day. The process was tested for the summer of 2020 and exhibited lower errors than forecasts produced by the model using default values of the parameters.
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Peters, Chelsea N., Charles Kimsal, Ryan S. Frederiks, Anner Paldor, Rachel McQuiggan et Holly A. Michael. « Groundwater pumping causes salinization of coastal streams due to baseflow depletion : Analytical framework and application to Savannah River, GA ». Journal of Hydrology 604 (janvier 2022) : 127238. http://dx.doi.org/10.1016/j.jhydrol.2021.127238.

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Senthil Kumar, Kurunthachalam, Kenneth S. Sajwan, Joseph P. Richardson et Kurunthachalam Kannan. « Contamination profiles of heavy metals, organochlorine pesticides, polycyclic aromatic hydrocarbons and alkylphenols in sediment and oyster collected from marsh/estuarine Savannah GA, USA ». Marine Pollution Bulletin 56, no 1 (janvier 2008) : 136–49. http://dx.doi.org/10.1016/j.marpolbul.2007.08.011.

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Yang, Xiaoqian, Jun Tian, Mengjie Li, Weiyang Chen, He Liu, Zhejun Wang, Markus Haapasalo, Ya Shen et Xi Wei. « Biocompatibility of a New Calcium Silicate-Based Root Canal Sealer Mediated via the Modulation of Macrophage Polarization in a Rat Model ». Materials 15, no 5 (7 mars 2022) : 1962. http://dx.doi.org/10.3390/ma15051962.

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(1) Background: The EndoSequence BC Sealer HiFlow (Brasseler, Savannah, GA, USA) has recently been introduced in clinical applications. Thus, the aims of the present study are to determine its biocompatibility in vivo and to examine its ability to drive macrophage polarization in vitro and in vivo. (2) Methods: HiFlow was implanted into rat connective tissue for 7, 30 and 150 days. The microstructures and elemental compositions were determined by scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDX). Hematoxylin–eosin, immunofluorescence, RT–qPCR and flow cytometry were used to elucidate the effects on inflammatory responses and macrophage polarization. (3) Results: SEM-EDX revealed the formation of surface hydroxyapatite crystal layers. Histological evaluation showed that HiFlow exhibited long-term biocompatibility because it decreased inflammatory responses and reduced the number of macrophages over time; however, tissue necrosis was observed in all the groups. RT–qPCR verified that HiFlow regulated the expression of inflammatory factors to inhibit the inflammatory response. Immunofluorescence analysis performed on in vivo samples revealed that HiFlow promoted M2-like macrophage polarization, and these results were confirmed by flow cytometry in vitro. (4) Conclusion: After 150 days of investigation, HiFlow was considered biologically acceptable, and the formation of apatite crystal layers and the promotion of M2-like macrophage polarization may contribute to its favorable biocompatibility.
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Heath, Robert T. « Dissolved Organic Phosphorus Compounds : Do They Satisfy Planktonic Phosphate Demand in Summer ? » Canadian Journal of Fisheries and Aquatic Sciences 43, no 2 (1 février 1986) : 343–50. http://dx.doi.org/10.1139/f86-044.

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The rate of release of phosphate from dissolved organic phosphorus (DOP) compounds generally accounted for <1% of the phosphate uptake rate by seston in the open water of five diverse freshwater systems in summer. Surface water samples were taken during July and August 1984 from a eutrophic lake (East Twin Lake, OH), an acid bog lake (Triangle Bog Lake, OH), a freshwater estuarine marsh that empties into the western basin of Lake Erie (Old Woman Creek, OH), and two large mainstem reservoirs on the Savannah River (R. B. Russel Reservoir and Clarks Hill Lake, GA). In each of these, phosphatase hydrolysable phosphomonoesters (PME) often were the major fraction of DOP; phosphate release from photosensitive DOP was not detected in any of these systems at this time. The rate of release of phosphate from PME was calculated from Michaelis–Menten kinetics, and phosphatase activity was estimated spectrophotometrically using p-nitrophenyl phosphate as a model substrate. Radiometric analysis of the rate of phosphate uptake by seston showed that phosphate was sorbed to seston by at least two different processes. The total uptake rate by all uptake processes exhibited an apparent first-order dependence on the concentration of available phosphate. Typically, the velocity of uptake was 1–10 nmol∙L−1∙min−1, and the velocity of release from PME was 0.01–0.06 nmol∙L−1∙min−1.
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Eid, Diana, Etienne Medioni, Gustavo De-Deus, Issam Khalil, Alfred Naaman et Carla Zogheib. « Impact of Warm Vertical Compaction on the Sealing Ability of Calcium Silicate-Based Sealers : A Confocal Microscopic Evaluation ». Materials 14, no 2 (14 janvier 2021) : 372. http://dx.doi.org/10.3390/ma14020372.

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The aim of this in vitro study was to evaluate the dentinal tubule penetration of two calcium silicate-based sealers used in warm vertical compaction (WVC) obturation technique in comparison with the single cone (SC) technique by confocal laser scanning microscopy (CLSM). The null hypothesis was that both obturation techniques produced similar sealer penetration depths at 1 and 5 mm from the apex. Forty-four mandibular single-rooted premolars were randomly divided into four equally experimental groups (n = 10) and two control groups (n = 2) according to the type of sealer (Bio-C Angelus, Londrína, PR, Brazil or HiFlow Brasseler, Savannah, GA, USA) with either SC or WVC. The sealers were mixed with a fluorescent dye Rhodamine B (0.1%) to enable the assessment under the CLSM. All the specimens were sectioned horizontally at 1 and 5 mm from the apex. The maximum penetration depth was calculated using the ImageJ Software (ImageJ, NIH). Data were analyzed by Mann–Whitney U and Kruskal–Wallis tests (p < 0.05). A significant difference was shown between the four groups at 1 mm (p = 0.0116), whereas similar results were observed at 5 mm (p = 0.20). WVC allowed better diffusion for both sealers at 1 mm (p = 0.01) and 5 mm (p = 0.034). The maximum penetration of the Bio-C and HiFlow sealers was more important at 5 mm with the two obturation techniques. Within the limitations of this study, WVC enhanced the penetration of calcium silicate-based sealers into the dentinal tubules in comparison with the SC technique at both levels.
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Livres sur le sujet "Savannah Science Museum (Savannah, Ga.)"

1

Ga.) Savannah Science Museum (Savannah. Herpetological specimens in the Savannah Science Museum collection. Savannah, Ga : The Museum, 1994.

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Art, Telfair Museum of, dir. Classical Savannah : Fine & decorative arts, 1800-1840. Savannah, Ga : Telfair Museum of Art, 1995.

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David, Hutchison. Verification, Model Checking, and Abstract Interpretation : 10th International Conference, VMCAI 2009, Savannah, GA, USA, January 18-20, 2009. Proceedings. Berlin, Heidelberg : Springer Berlin Heidelberg, 2009.

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Ga.) Regional Social Science Research Workshop : South Atlantic (2nd 2003 Savannah. Regional priorities for social science research on marine protected areas : South Atlantic : final workshop report : the Marshall House, Savannah, GA, December 2-4, 2003. Santa Cruz, CA?] : National MPA Center Science Institute, 2004.

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Swallow Savannah : A South Carolina story. Charleston, S.C : Evening Post Publishing Company, 2009.

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Practical Aspects Of Declarative Languages : 11th International Symposium Padl 2009 Savannah Ga Usa January 1920 2009 Proceedings. Springer, 2009.

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Swift, Terrance, et Andy Gill. Practical Aspects of Declarative Languages : 11th International Symposium, PADL 2009, Savannah, GA, USA, January 19-20, 2009, Proceedings. Springer London, Limited, 2009.

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