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Tytuł:
Hemifacial asymmetries in age perception: the left cheek looks older for females, but not males
Autorzy:
Lindell, Annukka K
Cianchetta, Rhiannon O
Azim, Sana M
Freeman, Cody G
de Oliveira, Nicole C
Saban, Sakire
Messina, Julia L
Wilson, Kira Elise
Egan, Alanna
Caspar, Megan D
Grey, Emma J
McDonald, Bryce A
Croxford, Kylie N
Bui, Thu Trang
Aiello, Ashley A
Heywood-Smith, Victoria M
Kidd, Andrew J
Stanley, Shenae C
Wakeling, Alarna
Hoggan, Stephanie A.L
Morriss, Ashleigh S
Trinh, Thi Phuong Mai
Thai-Nguyen, Hong
Fonte, Melissa
Agolli, Franceska
Powiązania:
https://bibliotekanauki.pl/articles/2106020.pdf
Data publikacji:
2019-12-18
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
emotion
asymmetry
hemisphere
laterality
age
Opis:
The left hemiface expresses emotion more intensely than the right. Because emotional expressions contract the facial muscles and wrinkle the skin, theoretically the left hemiface’s greater expressivity should prompt more pronounced expression lines and wrinkles on the left than right side of the face. As wrinkles are the most salient age cue, we investigated whether the left hemiface consequently appears older than the right. Two hundred and sixty participants (F=148; M=112) viewed booklets containing pairs of left-left and right-right chimeric faces of eight models (M=F). For each trial participants were asked to make a two alternative forced choice response indicating which image looked older. Results confirmed a left cheek bias, with participants more likely to select left-left than right-right chimeras. Whilst participant gender did not influence perceptions, model gender predicted cheek selections: responses to female models drive the overall left cheek bias. The left cheek (56.8%) appeared older than the right cheek (43.2%) for female models, whereas there was little difference in perceived age between male models' left (50.8%) and right (49.2%) cheeks. Given that youth influences perceptions of female beauty, these findings complement previous research and offer a potential explanation for why the left side of females’ faces are judged less attractive: the right cheek appears younger.
Źródło:
Acta Neuropsychologica; 2019, 17(4); 417-426
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of pyrite type on the electrochemistry of chalcopyrite/pyrite interactions
Autorzy:
Forbes, E.
Smith, L.
Vepsalainen, M.
Powiązania:
https://bibliotekanauki.pl/articles/110218.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
flotation
arsenic
pyrite
galvanic interaction
Surface oxidation
Opis:
Pyrite is the most common sulphide gangue mineral occurring in base metal sulphide ores around the world. Pyrite is known to galvanically interact with valuable minerals such as chalcopyrite, altering their electrochemical and flotation behaviour. Different types of pyrite are known to vary in texture, chemical composition and electrochemical activity. However, the effect that these differences have on the degree of pyrite interaction with chalcopyrite are not well studied. This work examines two distinct types of pyrite from different deposits that have a similar chemical composition, but vary greatly in texture. It investigates the way in which these pyrites interact with chalcopyrite surfaces, affecting both its electrochemical behaviour and floatability. It was found that the Renison pyrite was characterised by a much higher level of surface activity than the Huanzala pyrite. This was attributed to the elevated levels of arsenic within the mineral’s crystalline matrix.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 4; 1117-1129
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena możliwości włączenia Lasów Sobiborskich do sieci obszarów Important Birds Areas oraz obszarów specjalnej ochrony ptaków
Possibility of inclusion of the Sobibór Forests into Importand Birds Areas and Special Protection Areas networks
Autorzy:
Kanclerska, K.
Karpińska, O.
Woźniak, B.
Grzębkowski, M.
Aftyka, S.
Belcik, M.
Bożycki, L.
Celej, M.
Chodkiewicz, T.
Kuszner, M.
Litwiniak, K.
Pawelec, M.
Pietrasz, K.
Rożycki, A.L.
Sikora, D.
Smith, L.
Stasiak, K.
Szewczuk, W.
Sliwiński, S.
Tylkowski, S.
Woźniak, M.
Woźniak, P.
Wójciak, J.
Żołądek, K.
Keller, M.
Powiązania:
https://bibliotekanauki.pl/articles/985820.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
ochrona przyrody
Lasy Sobiborskie
walory przyrodnicze
fauna
ptaki
ochrona zwierzat
Europejska Siec Ekologiczna Natura 2000
obszary specjalnej ochrony ptakow
bird protection areas
nature 2000 network
Opis:
One of the greatest challenges of nature conservation is to identify and locate networks of protected areas, which will preserve the biodiversity. The paper aims to show the ornithological value of the Sobibór Forests (E Poland) and to emphasize the fact that the network of Important Bird Areas (IBA) and Special Protection Areas within Natura 2000 (SPA) may require additions. The study was conducted in the period of 2008−2016, mainly on forested areas occupying 256 km2. The Sobibór Forests are characterized by a large diversity of habitats, but are mainly covered by Scots pine Pinus sylvestris. High diversity of wetlands and marshlands make the Sobibór Forest unique within the country. Three methodologies were used to estimate population size of chosen species: sampling, census and random observations. 31 species from Annex I of the Birds Directive plus 25 species of SPEC or non−SPECE category were observed which allows to consider this area as one of the most valuable for avifauna in Poland. Six breeding species classify the Sobibór Forests as the IBA and SPA. These species include Black Stork Ciconia nigra (8−13 breeding pairs), Common Crane Grus grus (80−120 breeding pairs), Grey Great Owl Strix nebulosa (0−7 breeding pairs i.e. 50−100% of Polish breeding population), Eagle Owl Bubo bubo (6 breeding pairs), White−backed Woodpecker Dendrocopos leucotos (40−70 breeding pairs) and Grey−headed Woodpecker Picus canus (20−40 breeding pairs). Six other species show potential for qualification, but not enough data has been collected yet. The list of this specie includes: Short−toed Snake Eagle Circaetus gallicus, Common Snipe Gallinago gallinago, Stock Dove Columba oenas, European Nightjar Caprimulgus europaeus, Collared Flycatcher Ficedula albicollis and Bluethroat Luscinia svecica. The Sobibór Forests occupy a small area compared to other IBA forests. However, the number of breeding species classifies the surveyed area as 7th among other IBAs. Moreover all eligible species may be considered as a bioindicators of the natural state of the forest. This is proof of the high natural value of this area.
Źródło:
Sylwan; 2018, 162, 02; 146-154
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Highly derived eutherian mammals from the earliest Cretaceous of southern Britain
Autorzy:
SWEETMAN, STEVEN C.
SMITH, GRANT
MARTILL, DAVID M.
Powiązania:
https://bibliotekanauki.pl/articles/945956.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
mammalia
eutheria
dentition
early cretaceous
purbeck group
britain
uk
Opis:
Eutherian mammals (Placentalia and all mammals phylogenetically closer to placentals than to marsupials) comprise the vast majority of extant Mammalia. Among these there is a phenomenal range of forms and sizes, but the origins of crown group placentals are obscure. They lie within the generally tiny mammals of the Mesozoic, represented for the most part by isolated teeth and jaws, and there is strongly conflicting evidence from phenomic and molecular data as to the date of origin of both Eutheria and Placentalia. The oldest purported eutherians are Juramaia from the Upper Jurassic of China, and Eomaia and Acristatherium from the Lower Cretaceous, also of China. Based on dental characters and analyses of other morphological and molecular data, doubt has recently been cast on the eutherian affinities of the Chinese taxa and consequently on the date of emergence of Eutheria. Until now, the only tribosphenic mammal recorded from the earliest Cretaceous (Berriasian) Purbeck Group of Britain was the stem tribosphenidan Tribactonodon. Here we document two new tribosphenic mammals from the Purbeck Group, Durlstotherium gen. nov. and Durlstodon gen. nov., showing highly derived eutherian molar characters that support the early emergence of this clade, prior to the Cretaceous.
Źródło:
Acta Palaeontologica Polonica; 2017, 62, 4; 657-665
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk of exposure to airborne Ambrosia pollen from local and distant sources in Europe - an example from Denmark
Autorzy:
Sommer, J.
Smith, M.
Sikoparija, B.
Kasprzyk, I.
Myszkowska, D.
Grewling, L.
Skjoth, C.A.
Powiązania:
https://bibliotekanauki.pl/articles/49838.pdf
Data publikacji:
2015
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2015, 22, 4
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Searching for a trace of Artemisia campestris pollen in the air
Poszukiwanie śladów ziaren pyłku Artemisia campestris w powietrzu
Autorzy:
Grewling, L.
Kasprzyk, I.
Borycka, K.
Chlopek, K.
Kostecki, L.
Majkowska-Wojciechowska, B.
Malkiewicz, M.
Myszkowska, D.
Nowak, M.
Piotrowska-Weryszko, K.
Puc, M.
Stawinska, M.
Balwierz, Z.
Szymanska, A.
Smith, M.
Sulborska, A.
Weryszko-Chmielewska, E.
Powiązania:
https://bibliotekanauki.pl/articles/27159.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
aerobiology
mugwort
phenology
biogeography
land use
allergy
human disease
Artemisia campestris
pollen
distribution
air
Opis:
The aim of the study was to determinate whether Artemisia campestris was present in the vicinity of 8 pollen monitoring stations in Poland by examining temporal variations in daily average airborne Artemisia pollen data recorded by Hirst type volumetric traps. Three day moving averages of airborne Artemisia pollen were examined by Spearman’s rank correlation test. Results show that Artemisia pollen seasons in Poland generally display similar unimodal patterns (correlation coefficients r > 0.900; P < 0.05). The only exception was the Artemisia pollen concentration noted in the outskirts of Poznań (Morasko), where the bimodal pattern was revealed. Correlations between Artemisia pollen data recorded at Poznań-Morasko and the other Polish sites were the lowest in the investigated dataset; this was particularly noticeable in the second part of pollen season (r ~0.730). We show that the typical bimodal pattern in Artemisia pollen seasons, which is characteristic of the presence of both A. vulgaris (first peak) and A. campestris (second peak), does not occur at the majority of sites in Poland and is restricted to the outskirts of Poznań. In fact, it was noted that the pollen monitoring site in Poznań-Centre, just 8 km from Morasko, only exhibited one peak (attributed to A. vulgaris). This shows that the influence of A. campestris on airborne pollen season curves is limited and can be largely disregarded. In addition, this study supports previous records showing that the spatial distribution of airborne Artemisia pollen within a city (urban-rural gradient) can vary markedly, depending on the species composition.
Celem pracy było stwierdzenie, czy bylica polna (Artemisia campestris) występuje w pobliżu 8 stacji monitoringu aerobiologicznego w Polsce, poprzez prześledzenie czasowej zmienności dobowych wartości stężenia ziaren pyłku Artemisia zarejestrowanych za pomocą aparatów wolumetrycznych typu Hirst. Trzydniowe średnie ruchome średnich wartości stężenia ziaren pyłku bylicy w poszczególnych miastach zostały porównane ze sobą za pomocą testu korelacji rang Spearmana. Wyniki wykazały, że sezony pyłkowe bylicy w Polsce mają generalnie podobny jednomodalny przebieg (współczynnik korelacji > r = 0.900; P < 0.05). Jedynym wyjątkiem była stacja monitoringu aerobiologicznego zlokalizowana na przedmieściach Poznania (Morasko), gdzie sezon pyłkowy Artemisia miał dwumodalny przebieg. Współczynniki korelacji pomiędzy stężeniem ziaren pyłku bylicy odnotowanym na Morasku a innymi miastami w Polsce były najniższe w analizowanej bazie; było to szczególnie widoczne w drugiej części sezonu pyłkowego (r ~0.730). Wykazaliśmy, że typowy dwumodalny przebieg sezonu pyłkowego bylicy, który związany jest z obecnością ziaren pyłku bylicy pospolitej, A. vulgaris (pierwszy szczyt pylenia) i bylicy polnej, A. campestris (drugi szczyt pylenia), nie występuje w większości badanych stanowisk miejskich i jest ograniczony jedynie do terenów podmiejskich Poznania. Co ciekawe, sezon pyłkowy bylicy w centrum Poznania, oddalonego jedynie 8 km od stacji pomiarowej Morasko, charakteryzuje się tylko jednym szczytem pylenia (przypisanym A. vulgaris). Wyniki te pokazują, że wpływ ziaren pyłku bylicy polnej na przebieg sezonu pyłkowego rodzaju Artemisia na obszarach miejskich jest bardzo ograniczony. Badania te, wspierają wcześniejsze prace, wykazujące, że przestrzenny rozkład stężenia ziaren pyłku bylicy w mieście (na osi centrum miasta – tereny podmiejskie) waha się znacząco w zależności od występujących tam gatunków z rodzaju Artemisia.
Źródło:
Acta Agrobotanica; 2015, 68, 4
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
TS-BTPhen as a promising hydrophilic complexing agent for selective Am(III) separation by solvent extraction
Autorzy:
Kaufholz, P.
Sadowski, F.
Wilden, A.
Modolo, G.
Lewis, F. W.
Smith, A. W.
Harwood, L. M.
Powiązania:
https://bibliotekanauki.pl/articles/147226.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
Am-Cm separation
TODGA
TS-BTPhen
liquid-liquid extraction
Opis:
The novel hydrophilic back-extraction agent TS-BTPhen (3,3',3'',3'''-[3-(1,10-phenanthroline-2,9- -diyl)-1,2,4-triazine-5,5,6,6-tetrayl]tetrabenzenesulfonic acid) was tested for its selectivity towards Am(III) over Cm(III) and Eu(III) with a TODGA (N,N,N',N'-tetraoctyldiglycolamide) based solvent. Batch experiments were carried out using TS-BTPhen dissolved in aqueous nitric acid solution with tracers of 152Eu, 241Am and 244Cm. A signifi cant increase of the separation factor for Cm over Am from SFCm/Am = 1.6 up to SFCm/Am = 3.3 was observed compared to the use of a TODGA-nitric acid system alone. Furthermore, stripping was possible at high nitric acid concentrations (0.6–0.7 mol/L) resulting in a low sensitivity to acidity changes. The infl uence of the TS-BTPhen concentration was analyzed. A slope of –2 was expected taking into account literature stoichiometries of the lipophilic analogue CyMe4BTPhen. However, a slope of –1 was found. Batch stripping kinetics showed fast kinetics for the trivalent actinides. As an alternative organic ligand the methylated TODGA derivate Me-TODGA (2-methyl-N,N,N',N'-tetraoctyldiglycolamide) was tested in combination with the hydrophilic TS-BTPhen. The Am(III) separation was achieved at even higher nitric acid concentrations compared to TODGA.
Źródło:
Nukleonika; 2015, 60, No. 4, part 2; 815-820
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using the Day Reconstruction Method to Quantify Time Spent Suffering among Older Adults with Chronic Pain
Autorzy:
Smith, Dylan M.
Powiązania:
https://bibliotekanauki.pl/articles/465699.pdf
Data publikacji:
2015
Wydawca:
Główny Urząd Statystyczny
Tematy:
quality of life measurement osteoarthritis
time-weighted experience
Opis:
The Day Reconstruction Method (DRM) is a structured diary designed to measure time use in a manner that is more valid than traditional written summary measures, but less burdensome than real-time electronic diary methods. The lower respondent burden and administration costs might make it feasible to utilize this method in large national surveys. Past studies using the DRM have generally focused on subjective mood states during different types of activities. In this study, we extended the DRM to also measure suffering from negative symptoms, such as pain and fatigue, in 122 older adults, most of whom suffer from chronic pain. Results indicated that the method was well tolerated in this population, with over 98% of the sample providing interpretable responses. Chronic pain respondents reported spending a considerable proportion of their day suffering from pain, fatigue, and depression; a much higher proportion than reported by healthy controls (p’s < .01). Time spent suffering was associated with lower income, negative mood, and lower life satisfaction and quality of life.
Źródło:
Statistics in Transition new series; 2015, 16, 3; 429-440
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Clinical relevance of Corylus pollen in Poznan, western Poland
Autorzy:
Grewling, L.
Janerowicz, D.
Nowak, M.
Polanska, A.
Jackowiak, B.
Czarnecka-Operacz, M.
Smith, M.
Powiązania:
https://bibliotekanauki.pl/articles/49771.pdf
Data publikacji:
2014
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2014, 21, 1
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integrated stratigraphy of the Oxfordian global stratotype section and point (GSSP) candidate in the Subalpine Basin (SE France)
Autorzy:
Pellenard, P.
Fortwengler, D.
Marchand, D.
Thierry, J.
Bartolini, A.
Boulila, S.
Collin, P.
Enay, R.
Galbrun, B.
Gardin, S.
Huault, V.
Huret, E.
Martinez, M.
Smith, C.
Powiązania:
https://bibliotekanauki.pl/articles/2061042.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Callovian-Oxfordian boundary
biostratigraphy
ammonites
dinoflagellate cysts
calcareous nannofossils
cyclostratigraphy
chemostratigraphy
biostratygrafia
amonity
cyklostratygrafia
Opis:
An integrated biostratigraphic approach, based on ammonites, calcareous nannofossils, dinoflagellates, combined with sedimentology, carbon-isotope and physical stratigraphy, is proposed for the Subalpine Basin (Thuoux and Saint-Pierre d’Argençon sections). Within the expanded marl deposits of the Terres Noires Fm., the Callovian-Oxfordian boundary is particularly well defined by ammonite taxa from different families (i.e. Cardioceratidae, Oppeliidae, Aspidoceratidae and Perisphinctidae), calcareous nannoplankton (first occurrence of large-sized Stephanolithion bigotii) and dinoflagellate cysts (first occurrence of Wanaea fimbriata). This precise biostratigraphy and diversity of ammonites permit long-range correlations with Boreal and Pacific domains. The exceptional outcrop conditions and continuous sedimentation allow high-resolution chemostratigraphy and cyclostratigraphy to be used. Variations of the δ13C record (1.5‰ increase during the Lamberti Zone), consistent with data from other sections of the Subalpine Basin and with the Paris Basin, provide additional markers to characterise the Callovian-Oxfordian boundary. Promising results from cyclostratigraphy should serve to constrain the duration of biostratigraphic units and thus improve the Late Jurassic Geologic Time Scale. Comparisons are made with the two other candidates for an Oxfordian GSSP, Redcliff Point (UK) and Dubki (Russian Platform). Finally, the advantages of the Subalpine Basin sections support the proposal of Thuoux as a suitable GSSP candidate for the base of the Oxfordian Stage
Źródło:
Volumina Jurassica; 2014, 12, 1; 1--44
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relative efficiencies of the Burkard 7-Day, Rotorod and Burkard Personal samplers for Poaceae and Urticaceae pollen under field conditions
Autorzy:
Peel, R.G.
Kennedy, R.
Smith, M.
Hertel, O.
Powiązania:
https://bibliotekanauki.pl/articles/50817.pdf
Data publikacji:
2014
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2014, 21, 4
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interaction between meristem tissue layers controls phyllotaxis
Autorzy:
Kierzkowski, D.
Smith, R.
Lenhard, M.
Kuhlemeier, C.
Powiązania:
https://bibliotekanauki.pl/articles/80571.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
phyllotaxis
plant hormone
auxin
Arabidopsis
meristem
tissue layer
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measuring the mechanics of morphogenesis
Autorzy:
Routier-Kierzkowska, A.-L.
Weber, A.
Kierzkowski, D.
Nakayama, N.
Mosca, G.
Huflejt, M.
Barbierde Reuille, P.
Felekis, D.
Nelson, B.
Kuhlemeier, C.
Smith, R.S.
Powiązania:
https://bibliotekanauki.pl/articles/80791.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
cellular level
plant cell
osmotic potential
extracellular matrix
polysaccharide
plant morphogenesis
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphology and ecological setting of the basal echinoid genus Rhenechinus from the early Devonian of Spain and Germany
Autorzy:
Smith, A.B.
Reich, M.
Zamora, S.
Powiązania:
https://bibliotekanauki.pl/articles/22487.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:
Based on new material from Germany and Spain, the echinoid “Lepidocentrus” ibericusfrom the Early Devonian (Emsian) of northern Spain is shown to be congeneric with Rhenechinusfrom the Hunsrück Slate of south−western Germany. New information on the lantern, pedicellariae and internal structure of the theca is provided, and confirms this genus as a member of the Echinocystitidae–Proterocidaridae clade and the most primitive of all Devonian echinoids. The two environmental settings in which Rhenechinus is found are very different: the Spanish specimens come from a relatively shallow−water bryozoan meadow setting while the German specimens are preserved in a deep−water setting. We deduce that the rare echinoid specimens from the Hunsrück Slate are all allochthonous, whereas the Spanish material is preserved in situ.
Źródło:
Acta Palaeontologica Polonica; 2013, 58, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bivalve Characterization Using Synchrotron Micro X-Ray Fluorescence
Autorzy:
Jones, K.
Bronson, S.
Brink, P.
Gordon, C.
Mosher-Smith, K.
Brown, M.
Chaudhry, S.
Rizzo, A.
Sigismondi, R.
Whitehurst, M.
Lukaszewski, A.
Kranz, D.
Bland, K.
Gordan, D.
Lobel, J.
Sullivan, J.
Metzger, M.
O'Shea, C.
Harris, C.
Arezzo, R.
Kambhampati, M.
Powiązania:
https://bibliotekanauki.pl/articles/1808352.pdf
Data publikacji:
2009-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
01.40.-d
07.85.Qe
82.80.Ej
87.59.-e
Opis:
Bivalves, oysters, mussels, and clams are important constituents of riverine and estuarine ecosystems. Their shells and soft tissues provide information on the environments in which they live. Since they are filter feeders, they also are factors in improving water quality through removal of particulate matter from the water column. Finally, they are a valuable food source that has substantial economic value. Hence, characterization of shells and soft tissues is useful for improved understanding of these factors. Here, we used X-ray microprobes and computed microtomography facilities at the Brookhaven National Synchrotron Light Source to investigate elemental distributions in bivalves taken from locations around New York, Washington, DC, and New Orleans, LA. The results form the initial basis for compilation of a database of relevant parameters that can serve for tracking environmental changes and for assessing toxicity of particular metals. The work was enabled by active collaboration with students from the several regions, community groups, and research scientists. The collaboration was facilitated through use of web conferencing between Brookhaven National Laboratory and the varied locations.
Źródło:
Acta Physica Polonica A; 2009, 115, 2; 477-481
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 33

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