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Littérature scientifique sur le sujet « Provenance studie »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 10 mars 2023

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Articles de revues sur le sujet "Provenance studie"

Cole, SP, KC Woo, D. Eamus, CE Harwood et MW Haines. « Field Measurements of Net Photosynthesis and Related Parameters in Four Provenances of Acacia auriculiformis ». Australian Journal of Botany 42, n^o 4 (1994) : 457. http://dx.doi.org/10.1071/bt9940457.

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Tree diameter at breast height (DBH), tree height, maximum light saturated assimilation (Amax), phyllode conductance (gs), and phyllode water potential (ΨW) were determined in trees of Acacia auriculiformis A. Cunn. ex Benth., 3-4 years old. Trees from three provenance regions were studied: from Papua New Guinea (PNG ̵1 Bensbach River and Morehead River provenances); north Queensland (NQ); and the Northern Territory (NT), as part of a provenance trial on Melville Island, Northern Territory. The PNG provenances were the largest trees and had accumulated the largest biomass. Significant variation in Amax between provenance regions within a season, and between seasons (wet vs dry) for each provenance region were observed. There was no correlation between seasonal Amax and provenance region growth rate. The NT provenance region generally exhibited the largest Amax and the least variation between seasons and the PNG provenance region the lowest Amax, while the NQ provenance region varied most between seasons. Seasonal and provenance region Variation in gs followed a similar trend to Amax. There was no significant variation in ΨW between provenance regions. Canopy area of the PNG provenances was seven times greater than that of the NT provenance during the late dry season. We conclude that PNG provenances achieve their larger growth rates primarily by maintaining a larger canopy. Results are discussed with reference to the observed superior growth rate of the PNG provenances, and highlight the need for caution in extrapolating single phyllode assimilation data to infer comparative growth rates.

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Petkova, Krasimira, Emil Molle et Aysel Mustafova. « Survival and growth of Common beech (Fagus sylvatica L.) provenances in North-Eastern Bulgaria ». Silva Balcanica 23, n^o 2 (20 décembre 2022) : 5–17. http://dx.doi.org/10.3897/silvabalcanica.22.e95109.

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Two provenance tests in  North-Eastern Bulgaria have been studied, whose purpose is to test the response of beech provenances from Southern Germany to the drier and warmer climatic conditions in Bulgaria, in order to predict how they would perform in a warming and drying climate. The provenance tests were established in the spring of 2010 in the area of the Varbitza and Kipilovo Forest Services with 2-year-old seedlings in a 2 x 1 m scheme in 3 replications. Four provenances of common beech were studied - 2 German (Silberbach and Ebersdorf) and 2 Bulgarian (Petrohan and Berkovitza). On the 12th year after afforestation, an inventory and measurements of the height and root collar diameter were carried out. The results were processed statistically by applying one and two-factor analysis of variance, as well as Tukey’s test for multiple comparisons. A higher survival rate was found in the provenance test in Kipilovo. The Bulgarian provenances Petrohan and Berkovitza were characterized by better growth in height in both provenance tests, and in root collar diameter - provenance Petrohan. Provenance Ebersdorf could be recommended for use in drier and warmer places in Southern Germany.

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Ballian, Dalibor, et Nerma Zukić. « ANALYSIS OF THE GROWTH OF COMMON BEECH PROVENANCES (Fagus sylvatica L.) IN THE INTERNATIONAL EXPERIMENT NEAR KAKANJ ». Radovi Šumarskog fakulteta Univerziteta u Sarajevu 41, n^o 2 (1 décembre 2011) : 75–91. http://dx.doi.org/10.54652/rsf.2011.v41.i2.136.

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UDK 582.632.2:581.43/.44(497.6 Kakanj) This paper presents the results of the research of the provenances of beech (Fagus sylvatica L.) in an experiment near Kakanj. Experiments of the provenances were established during the spring of 2007 with 2+0 and 3+0 years-old seedings. The plants were planted in the experimental design of randomized block system in three replications. The results of the survival of plants in 2007, 2008 and 2009, and the root collar diameter of plants and plant height in 2009 are presented in this paper. Studies of the plants’ survival show that the highest percentage of survival rate had the provenance Tešanj – Crni Vrh I, while the lowest percentage of survival rate had provenance Bugojno Vranica - Bistrica. The analysis of the variance showed a statistically significant difference between the provenances, which was confirmed by the Duncan test. Romania provenance Alka - Iulia (10.14 mm) and the Swiss provenance Sihlwald (10.45 mm), had the smallest diameter of the root collar. Provenance from Croatia Dilj Čanglinski (19.43 mm) and provenance Varani kamen (18.46 mm) had the biggest diameter. The greatest average height had a provenance from Croatia Dilj Čanglinski (93.21 cm) and provenance Varani kamen (92.88 cm). The lowest level of height had provenance Alka Romania - Iulia (43.48 cm) and provenance Alesd (52.71 cm).

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Beaulieu, J., et A. Corriveau. « Variabilité de la densité du bois et de la production des provenances d'épinette blanche, 20 ans après plantation ». Canadian Journal of Forest Research 15, n^o 5 (1 octobre 1985) : 833–38. http://dx.doi.org/10.1139/x85-135.

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The variability of wood specific gravity and yield of 23 white spruce provenances from the Great Lakes – St. Lawrence forest region was studied 20 years after planting at Harrington Forest Farm, Québec. The results indicate no relationship between wood specific gravity of provenances and their respective growth performance. The southwestern section of this region showed a small decrease in wood specific gravity, but it was compensated for by a strong increase in volume growth, resulting in an important gain in dry weight productivity. The variability of white spruce wood specific gravity was split into three sources: 11% was attributed to provenance differences, 8% to provenance and repetition interaction, and the remainder to differences among trees of the same provenance and to experimental error. In a breeding program, a first selection should be made at the provenance level on the basis of volume productivity and a second selection on the basis of wood specific gravity values within the selected provenances, to maximize the overall genetic and economic gain.

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Dixit, Aalap, Thomas Kolb et Owen Burney. « Provenance Geographical and Climatic Characteristics Influence Budburst Phenology of Southwestern Ponderosa Pine Seedlings ». Forests 11, n^o 10 (4 octobre 2020) : 1067. http://dx.doi.org/10.3390/f11101067.

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Ponderosa pine (Pinus ponderosa Lawson & C. Lawson var. scopulorum Engelm.) forests of the southwestern US are threatened by climate change and deforestation. Information about geographic patterns of provenance variation in budburst phenology is needed to make decisions about selecting seed sources for future planting. In this study, provenance variation in the budburst phenology of ponderosa pine seedlings was examined using common garden studies. Seedlings from 21 provenances, representing an elevational gradient in Arizona and New Mexico, were planted in July 2018 at a ponderosa pine-dominated field site in northern Arizona. Field budburst was monitored weekly on all seedlings in the spring of 2019. Field budburst was compared with budburst timing of the same provenances measured under greenhouse conditions. The hypotheses for this study were that (1) budburst varies among provenances, with earlier budburst in low-elevation provenances, and (2) differences in budburst timing among provenances are consistent for seedlings grown in greenhouse and field environments. Field results show that provenances vary in budburst date and that low- and middle-elevation provenances break bud sooner than high-elevation provenances. Field budburst date had a moderate, positive correlation with provenance mean annual precipitation (r = 0.522) and a moderate, negative trend with latitude (r = −0.413). Budburst date of provenances in the greenhouse had a moderate, positive trend with budburst date in the field (r = 0.554), suggesting application of greenhouse results to field plantings. Such information about provenance variation and environmental and geographic trends in budburst timing will be useful for developing species-specific seed transfer guidelines and effective assisted migration strategies in a changing climate.

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Stojnic, Srdjan, Sasa Orlovic, Danijela Miljkovic et Wuehlisch von. « Intra- and interprovenance variations in leaf morphometric traits in European beech (Fagus sylvatica L.) ». Archives of Biological Sciences 68, n^o 4 (2016) : 781–88. http://dx.doi.org/10.2298/abs151008064s.

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European beech (Fagus sylvatica L.) is one of the most important tree species in Europe. Due to substantial genetic diversity and phenotypic plasticity, beech has successfully adapted to different environments within its natural range. Provenance tests provide a good basis for studying within- and between-provenance genetic variation, due to homogeneous within-trial environmental conditions. The aim of the present study was to determine the within- and between-provenance genetic variability of certain leaf morphological traits among eleven beech provenances, grown in a common garden experiment. Univariate analysis of variance (ANOVA) was used to test for differences among the studied beech provenances. Principal component analysis (PCA) allowed a complex assessment of the relationships among the provenances and an estimation of multivariate relations among the analyzed characters. The results of the study revealed the existence of substantial variability among provenances (p<0.001). Likewise, high genetic variability was observed at the intra-provenance level (p<0.001). The first three principal components (PC1-PC3) explained approximately 81% of the total variance among the European beech provenances tested. The highest contribution on PC1 corresponded to variables related to leaf size: leaf area (-0.882) and leaf width (-0.876). Based on the position of provenances on a PCA scatter plot, it could be assumed that European beech is characterized by a more ecotypic pattern of genetic variation rather than by clinal variation. Also, the presence of considerable genetic diversity within provenances will be important in the light of climate change impact on beech, since it could potentially facilitate rapid adaptation.

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Sebbenn, A. M., F. C. Arantes, O. V. Boas et M. L. M. Freitas. « Genetic Variation in an International Provenance-Progeny Test of Pinus caribaea Mor. var. bahamensis Bar. et Gol., in São Paulo, Brazil ». Silvae Genetica 57, n^o 1-6 (1 décembre 2008) : 181–87. http://dx.doi.org/10.1515/sg-2008-0028.

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Abstract A combined provenance-progeny test of Pinus caribaea var. bahamensis was established in Paraguaçu Paulista Experimental Station, São Paulo State, Brazil, in a “compact family” blocks design with 14 provenances, 2 to 10 families per provenance, 5 individuals per subplot, and 7 replications. Variation among and within island, provenances and families and genetic parameters for d.b.h., height, and real volume were investigated, about 15 years after planting. Analysis of variation for all studied traits revealed significant differences among islands, provenances within island and families within islands, suggesting the possibility of increasing the timber yield through selection of the more productive provenances and families within the best island. Genetic correlations on growth traits were high and statistically significant, indicating that substantial gains could be made through indirect selection for one trait based on direct selection for another. Norman Castle provenance from Abaco Island performed best for d.b.h. height and volume, while San Andros and Little Harbour Cay, both from Andros Island performed worst for d.b.h. and height, respectively, and South Riding from Grand Bahamas Island performed worst for volume. The best provenance growth compared to that P. elliottii var. elliottii species at the same experimental site suggests that P. caribaea var. bahamensis has high silvicultural potential for the Paraguaçu Paulista region.

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Savva, Yu V., F. H. Schweingruber, E. A. Vaganov et L. I. Milyutin. « INFLUENCE OF CLIMATE CHANGES ON TREE-RING CHARACTERISTICS OF SCOTS PINE PROVENANCES IN SOUTHERN SIBERIA (FOREST-STEPPE) ». IAWA Journal 24, n^o 4 (2003) : 371–83. http://dx.doi.org/10.1163/22941932-90000342.

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Scots pine provenances from all over Russia planted in 1964 at the forest- steppe zone were analyzed. Eight tree-ring characteristics from 12 different provenances were measured densitometrically. The time span of tree-ring observation covers the period from 1969 to 1997. The sensitivity coefficient of latewood width, latewood and maximum densities and latewood percentage decreases in relation to the increasing latitude of the provenances. The growth of all studied provenances is dictated by the local weather and climate. The correlation coefficients of indices between the local provenance and the other provenances are not lower than 0.46–0.97, and the synchronicity coefficients are minimally 0.84. The Euclidean distances vary from 0.11 to 0.13 between the local provenance and the other provenances. All statistical parameters show that the interannual variability reflects the prevailing influence of the local weather conditions. Variability of weather conditions determines up to 87% of the growth variability in the forest-steppe of southern Siberia.

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Tsegaye, Mintesnot, Belayneh Lemage et Alemayehu Hido. « Seedling performance of different provenances of selected indigenous tree species in Debub Ari District, Southern Ethiopia ». Global Journal of Earth and Environmental Science 6, n^o 2 (30 avril 2021) : 38–43. http://dx.doi.org/10.31248/gjees2020.086.

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Better understanding of variations in seed traits and seedling vigor in various populations of a given species is vital for appropriate nursery and tree planting technology. The main objective of this study was to identify better provenance for indigenous trees by testing seed germination and seedling traits. Seeds of six indigenous trees (Vachellia abyssinica, Vachellia seyal, Faidherbia albida, Balanites aegyptiaca and Terminalia laxiflora Engl.) were collected from different geographic areas. One hundred (100) polyethylene pots (20 cm height and 12 cm diameter) were filled with 2:1:1 ratio of local, forest soil and sand composition for seedlings. A Complete Randomized Design (CRD), 5 x 4 polyethylene pots in four replications of 20 polyethylene pots for each provenance was designed in the nursery and the provenances for selected species. Different early growth performance parameters were measured for each tested provenance. All collected data were analyzed by using ANOVA while the least significance difference was computed for mean separation. The seedling performance of Vachellia abyssinica and Vachellia seyal were significantly varied among the provenances. Vachellia abyssinica from Butajira provenance had the highest mean values across all the studied parameters. Except height, Kako provenance had the highest mean values across all the early performance parameters of Vachellia seyal. Seedling performances of Faidherbia albida in the nursery was significantly varied among the provenances except for root collar diameter. Provenance from Wondo Genet had the highest mean values of germination percent and comparable leaf numbers with provenance from Hawassa. It can be concluded that the observed patterns of variation will have the implication for genetic resources conservations and tree improvement. Accordingly, Butajira and Kako provenances could be taken as a good source of seed collection for Vachellia abyssinica and Vachellia seyal, respectively. Wondo Genet and Hawassa provenances could also ensure the provision of planting materials of Faidherbia albida for farmers. Further progeny tests in the field should be undertaken for a longer period to obtain definitive recommendations for early selection

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Chen, Jianhui, Ning Zhong et Jianhua Feng. « Developing a Provenance Warehouse for the Systematic Brain Informatics Study ». International Journal of Information Technology & ; Decision Making 16, n^o 06 (novembre 2017) : 1581–609. http://dx.doi.org/10.1142/s0219622015500418.

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Aiming at the unstructured brain data and data-driven research process, provenances have become an important component of brain and health big data rather than the accessory of raw experimental data in the systematic Brain Informatics (BI) study. However, the existing file-based or transaction-database-based provenance queries cannot effectively support quickly understanding data and generating decisions or suppositions in the systematic BI study, which need multi-aspect and multi-granularity provenance information and a process of incremental modification. Inspired by studies on the data warehouse and online analytical processing (OLAP) technology, this paper proposes a BI provenance warehouse. The provenance cube and basic OLAP operations are defined. A complete Data-Brain-based development approach is also designed. Such a BI provenance warehouse represents a radically new way for developing the brain big data center, which regards raw experimental data, provenances and domain ontologies as different levels of brain big data for data sharing and mining.

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Thèses sur le sujet "Provenance studie"

PASTORE, GUIDO. « Sand provenance and dispersal in the Sahara and Kalahari deserts : fluvial aeolian interactions and climatic implications ». Doctoral thesis, Università degli Studi di Milano-Bicocca, 2023. https://hdl.handle.net/10281/404096.

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Questa tesi presenta lo studio della composizione delle sabbie dei più grandi deserti africani e dei fiumi limitrofi al fine di illustrare gli effetti dell'interazione tra processi fluviali ed eolici sul trasporto di sedimenti in ambiente arido. Le sabbie del Sahara, del Kalahari e dello Zambesi sono state analizzate mediante petrografia, mineralogia della frazione pesante e geocronologia U-Pb di zirconi detritici. Per il caso di studio dello Zambesi sono stati analizzati anche la geochimica elementare, gli isotopi del Nd e i minerali delle argille. I campi di dune del Sahara sono, con poche eccezioni, composti da pura sabbia quarzosa con suite di minerali pesanti molto impoverite, dominate da minerali ultrastabili. La composizione varia solamente lungo la Valle del Nilo, in prossimità della catena dell'Anti-Atlante e alla provincia vulcanica libica. La sabbia delle dune del Kalahari è costituita principalmente da quarzo associato a minerali pesanti ultrastabili. La composizione varia solo ai margini occidentali e orientali del deserto, riflettendo in parte l’apporto fluviale di primo ciclo dai basamenti cristallini nella Namibia centrale, nello Zimbabwe occidentale e nelle dune vicino alle cascate Vittoria dove i sedimenti sono erosi dalle lave del Karoo. La morfologia segmentata del fiume Zambesi si riflette nella sua mineralogia e geochimica. La sabbia quarzosa erosa dalle dune del deserto del Kalahari viene progressivamente arricchita in frammenti litici basaltici e clinopirosseno. Successivamente nuovo apporto di sedimenti avviene a valle del lago Kariba, documentando una graduale diminuzione del quarzo e dei minerali ultrastabili. La composizione diventa quarzo-feldspatica nel tratto finale. L'abbondanza di feldspato nella sabbia del basso Zambesi non ha equivalenti tra i grandi fiumi sulla Terra e supera di gran lunga quella nei sedimenti del delta e della piattaforma, rivelando che il segnale di provenienza dell’alto Zambezi ha cessato di essere propagato a valle dopo la chiusura delle grandi dighe. La smectite, dominante nei fanghi generati dai basalti del Karoo o nel clima equatoriale delle pianure mozambicane, prevale su illite e kaolinite. La geochimica indica: l'aggiunta di quarzo per riciclo; l'erosione dei basalti del Karoo; l’erosione dei basamenti precambriani. Lo studio di Sahara e Kalahari consente di mettere a confronto deserti dominati dai processi eolici e deserti caratterizzati da una consistente interazione fluvio-eolica. Nel Sahara, la maggior parte della sabbia sembra essere riciclata da arenarie quarzose e il principale meccanismo erosivo e di trasporto è il vento. Nel Kalahari, i sedimenti sono trasportati dai fiumi che, erodendo gli orogeni ai fianchi del deserto, accumulano e omogeneizzano il detrito al centro del bacino grazie all’azione eolica. Lo studio permette di riconsiderare criticamente diversi dogmi della sedimentologia, come il presunto aumento della “maturità” mineralogica durante il trasporto fluviale: i sedimenti dell’alto Zambezi, erosi dalle dune del Kalahari e ricchi di quarzo, vengono progressivamente diluiti da sedimenti lito-feldspatici lungo il corso del fiume. Gli indici geochimici e la composizione dei fanghi sembrano indicare maggiore alterazione chimica nell'arido bacino dell’alto Zambesi rispetto al più umido Zambesi centrale e inferiore, testimoniando che il segnale di “paleo-alterazione del Kalahari” registrato nei sedimenti delle dune viene trasportato a valle fino alla foce.
This thesis presents a study of the composition of sand from desert dunes and adjacent rivers across the African continent to illustrate the effects of the interplay between fluvial and aeolian processes on sediment transport in desertic environments. The Sahara, Kalahari and Zambezi samples were analyzed by bulk-petrography, heavy-mineral, and detrital-zircon U–Pb geochronology. For the Zambezi case study, elemental geochemistry, Nd isotopes and clay minerals were also analyzed. Saharan dune fields are generally composed of pure quartzose sand with very poor heavy-mineral suites dominated by ultrastable minerals. Relatively varied compositions characterize sand along the Nile Valley, the southern front of the Anti-Atlas belt and near a basaltic field in Libya. Kalahari dune sand mostly consists of monocrystalline quartz associated with durable heavy. Composition varies only at the western and eastern edges of the desert, reflecting partly first-cycle fluvial supply eroded from crystalline basements of Cambrian to Archean age in central Namibia and western Zimbabwe. Basaltic detritus from Jurassic Karoo lavas is dominant in dunes near Victoria Falls. The segmented morphology of Zambezi River is reflected by its mineralogy and geochemistry. Pure quartzose sand recycled from Kalahari Desert dunes in the uppermost tract is next progressively enriched in basaltic rock fragments and clinopyroxene. Sediment load is renewed ﬁrst downstream of Lake Kariba, documenting a stepwise decrease in quartz and durable heavy minerals. Composition becomes quartzo-feldspathic in the lower tract. Feldspar abundance in Lower Zambezi sand has no equivalent among big rivers on Earth and far exceeds that in sediments of the northern delta, shelf, and slope, revealing that provenance signals from the upper reaches have ceased to be transmitted across the routing system after closure of the big dams. Irumide ages predominate over Pan-African, Eburnean, and Neoarchean ages. Smectite, dominant in mud generated from Karoo basalts or in the equatorial climate of the Mozambican lowlands, prevails over illite and kaolinite. Elemental geochemistry reflects quartz addition by recycling, supply from Karoo basalts, and first-cycle provenance from Precambrian basements. Sahara and Kalahari case studies allow to study in situ sand generation by wind erosion versus external fluvial supply in arid environment. In the Sahara, most sand appears to be recycled from rocks with high sand-generation potential, and the main transport mechanism is the wind saltation and dune movement. In Kalahari, sediments are fed by rivers by first cycle erosion of exposed orogens at the flanks of the desert and therein homogenised. The contrasting effect of strong recycling by wind and fresh supply from rivers are the key factor for most deserts studied in literature and their identification in terms of mineralogy and provenance is proved to be precious for present and past climatic debate. In addition, evaluating the results from the Kalahari and Zambezi studies allows to critically reconsider several dogmas, such as the supposed increase of mineralogical “maturity” during long-distance ﬂuvial transport. This is strongly affected by provenance factors: quartz-rich recycled Kalahari dune sand is progressively diluted along the Zambezi River by sediment supplied by different crustal domains. Inheritance of the “Kalahari paleo-weathering signal” by Zambezi River is highlighted also by geochemical indexes and mud composition which appear to be oddly more affected by weathering in the arid Uppermost Zambezi catchment than in the wetter Middle and Lower Zambezi.

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Radon, Jenny. « FILADE TÄNDER I ljuset av sina sammanhang : En studie av individer med modifierade tänder i Skandinavien under yngre järnålder ». Thesis, Uppsala universitet, Institutionen för arkeologi och antik historia, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-389643.

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This master thesis investigates the phenomenon of men with filed (modified) teeth in Scandinavia during late Iron Age. More than 100 buried men with filed teeth have up till now been discovered. Of these, 92 are included in my analysis. Burials containing men with filed teeth have been discovered on Gotland, in Skåne, Uppland, Västergötland and Öland in Sweden, on Fyn in Denmark and in one mass grave in Dorset, England. Most of the men derive from burials on Gotland. The men with filed teeth have hitherto mostly been studied from an osteoarchaeological approach. Instead, this study regards the burial contexts in which they were found. In order to study this, I have compiled a data base in which available information about these men and their burial contexts have been gathered. The term ¨burial context¨ in this essay refers to the grave finds and the aspects of the burial itself, as well as the landscape in which it is situated. The aim of the study is to try to determine what unites, and separates, the men with filed teeth; what can be said about the dating of their occurrence, the men’s origin/provenance and what social status and occupation they may have held.

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Lind, Clara, et Marie Ottosson. « Made in Sweden ? : En studie om trikåindustrin i Sverige ». Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-22064.

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Svenskarnas klädkonsumtion har nästan fördubblats under de 30 senaste åren. Den stora anledningen är att kläderna blivit allt billigare, eftersom majoriteten produceras i låglöneländer. Långa värdekedjor, bristande kvalitetskontroll och dåliga arbetsförhållanden är exempel på utmaningar som utlandsproduktion för med sig. Etisk produktion och hållbarhet har aldrig varit mer aktuellt än det är idag och det är något som både kunder och företag värderar och eftersträvar. Frågan är om textilproduktionen i Sverige och framför allt trikåproduktionen som denna studie fokuserar på, har möjlighet att utvecklas i takt med den ökade medvetenheten kring hållbarhet, etisk konsumtion och transparent produktion. Syftet med studien är därför att undersöka förutsättningar och fördelar med trikåproduktionen i Sverige genom att ta reda på om det finns hållbarhetsaspekter, konkurrensfördelar och intresse bland svenska trikåföretag att producera i Sverige. Begreppen reshoring, proveniens och hållbarhet är studiens utgångspunkt utifrån vilka en litteraturstudie byggdes upp. En trianguleringsmetod användes som innefattar såväl en kvantitativ enkät samt två kvalitativa semistrukturerade djupintervjuer med företagsledare för två trikåföretag som helt eller delvis har produktion i Sverige. Resultatet visade att det finns utrymme för trikåproduktion i Sverige eftersom efterfrågan och intresset från svenska företag är stort. Däremot finns det flera utmaningar. Lönsamhet, brist på kompetens samt kundernas okunskap och ovilja att betala för produkter som är tillverkade i Sverige är några av svårigheterna. Det visade sig också att produktion i Sverige är komplext och kanske inte alltid så bra som det låter. Märkningen made in kan missrepresentera var en produkt verkligen är tillverkad, eftersom det endast anger var produkten har monterats. Kunderna vill gärna ha ett enkel t svar på en komplicerad problematik, vilket många företag är snabba att bistå. Studien ger inspiration till ytterligare forskning kring svensk tekoindustri samt till svenska trikåföretag som överväger att förlägga produktion till Sverige. Studien kan också öka medvetenheten hos kunder gällande sin roll i den textila värdekedjan.
The clothing consumption has almost doubled in the last 30 years in Sweden. The main reason is that clothes have become cheaper since the majority are produced in low-wage countries. Long value chains, lack of quality control and poor working conditions are examples of challenges that offshore production brings. Ethical production and sustainability have never been more relevant than it is today and it has become something that customers as well as companies value and strive for. The question is whether Swedish textile production, and the knitwear production which this study will focus on, have the opportunity to develop as the awareness of sustainability, ethical consumption and transparent production increases. The aim of the study is therefore to investigate the conditions and advantages of Swedish knitwear production, and to find out whether there are sustainability aspects, competitive advantages and interest among Swedish knitwear companies to produce in Sweden. Reshoring, provenance and sustainability are the starting points of which the literature study is built up. A triangulation method was used which includes both a quantitative survey and two qualitative in-depth interviews with company executives for two knitwear companies that have full or partly production in Sweden. The result showed that there is room for Swedish knitwear production, because of the demand and interest from Swedish companies. There are however several challenges. Profitability, lack of competence, customers ignorance and unwillingness to pay for Swedish-made products are some of the difficulties. The study shows that production in Sweden is more complex than expected and that it may not always be as good as it sounds. The label made in can misrepresent where a product actually is made, since it only indicates where the product has been assembled. However, customers would like a simple answer to a complicated problem, which many companies are quick to give. The study contributes with new knowledge about the Swedish textile industry and with valuable information to knitwear companies that consider to reshore their production. The study may also increase the awareness of Swedish customers regarding their role in the textile value chain.

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Schyman, Joakim. « Proveniensbestämning av vikingatida hornmaterial : En studie utifrån stabila isotoper ». Thesis, Stockholms universitet, Arkeologiska forskningslaboratoriet, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-78367.

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The main aim was to investigate the provenance of Viking age antler material findings of moose and red deer from Sigtuna and from three sites on the island of Gotland in the Baltic sea. This was done by analysis of the stable isotopes of carbon, nitrogen and sulphur. Thre were never any living population of these mammals on Gotland during the Viking age. δ34S-values of sulphur from this study was compared with earlier research and by studying maps of the Swedish bedrock. The δ34S-values were more like the δ34S-value for bedrock other than European granite. These bedrocks are found in the south-east of Sweden along the coast towards Gotland. The provenance of the Sigtuna antlers could be three different areas and the material from Gotnald could come from two differente regions. A student-t test between Fröjel and Sigtuna showed no significant correlation between the two populations. A comparison within the Sigtuna material showed a possible difference between two different dated phases. This could mean that an import of antlers from other areas was made when antlers in the Sigtuna region was less available.

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Bray, Ian Stephen Johnson. « Geochemical methods for provenance studies of steatite ». Thesis, University of Glasgow, 1994. http://theses.gla.ac.uk/2735/.

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The aim of archaeology is the reconstruction of past cultures and the processes behind cultures. Conclusive evidence of cultural contacts between distinct groups of peoples is of great importance. It has long been realised that the study of the raw materials utilised for artifacts that were then moved far from their place of origin is vital in identifying these contacts and this study is concerned with the investigation of one such material - steatite. Steatite is a soft talcose rock that is easily carved even with stone, bone or metal tools. It also has a low coefficient of thermal expansion. These physical properties have resulted in steatite being used as a raw material for the production of many domestic and decorative items throughout the world from prehistoric times until the present. However, the geological formation process has only occurred in a limited number of locations, and hence steatite sources have a relatively restricted geographical distribution. Thus steatite can be seen to fulfil a number of the basic requirements for provenancing, namely limited geographical distribution and extensive utilisation in the past. As a lithic material the physical production techniques do not affect the physical and chemical nature of the material, which may be a considerable problem with characterisation of other archaeological material, eg. ceramics, metal and glass. Thus by characterisation of source material, steatite artifacts of unknown provenance may be compared and their ultimate origin established. However, the formation of steatite is a complex process that often results in a source body that is inhomogeneous, making simple characterisation techniques inadequate. This study seeks to establish differences between source regions and between individual quarries. If a unique pattern in measurable properties can be established, by comparing artifacts to sources, their origin may be established.

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Drewery, S. E. « Provenance of carboniferous sandstones : Geochronologic and petrographic studies ». Thesis, University of Leeds, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380301.

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Muskara, Uftade. « Provenance Studies On Limestone Archaeological Artifacts Using Trace Element Analysis ». Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608429/index.pdf.

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Trace element composition of archaeological artifacts is commonly used for provenance studies. Limestone has generally studied by geologists and there are a few researches done by various archaeological sciences. Although it is a common material for buildings and sculpture it is been thought that limestone used had not imported like marbles. Limestone figurines from Datç
a/Emecik excavations are classified as Cypriote type, which was very popular through 6th century B.C. in the Mediterranean region. Since this type of figurines was found at Emecik numerously to determine its provenance was an important problem. Emecik figurines were examined for their some major, trace elements and REE compositions and results were compared with geological samples which were taken from a near by quarry. Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES), Inductively Coupled Plasma-Mass Spectrometry (ICPMS) have been used for analysis. The methods have been optimized by using standard reference material NIST 1d, NCS DC 73306, and IGS40.

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Lloyd, Matthew James. « Sediment provenance studies in the Pyrenean foreland basin, Aragon, Spain ». Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295034.

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Stos-Gale, Zofia. « Application of lead isotope analysis to provenance studies in archaeology ». Thesis, University of Oxford, 1992. http://ora.ox.ac.uk/objects/uuid:38e670cf-f1fa-4c6d-8c5e-e2d7ca4fdbfa.

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Advances in mass spectrometry in the second half of this century allowed very accurate measurements of isotopic compositions of various elements. In turn it was discovered that due to the radiogenic origin of some of these isotopes their composition often reflects the geochemical history of minerals and rocks. Terrestrial lead is composed of four isotopes, of which three are radiogenic in origin as daughters of uranium and thorium. In geochronology the isotopic composition of minerals helps in dating the ore and rock formations. However, if there is enough diversity amongst the isotopic compositions of different deposits, then their lead isotope composition can be used as a simple and unique 'fingerprint', which can be scientifically measured. This feature can be used as a powerful tool in the identification of sources of ancient metals, because it passes unchanged through the smelting and refining processes. However, one of the most important requirements for such 'lead isotope provenance studies' is empirical investigation of the 'fingerprints' of ore deposits which are relevant to a given archaeological research. In this dissertation the scientific foundations of lead isotope provenance studies are described and examined in detail. All available evidence concerning the possibility of distinguishing isotopically between different European ore deposits is examined and methods of visual and numerical evaluation of the lead isotope data are suggested. Two examples of applications to specific archaeological problems are also given: the identification of sources of metals used for production of Bronze Age Cretan weapons and of non-ferrous metals in the Roman Period in Southern Poland. The interpretation of lead isotope data for archaeological objects is based on nearly 1500 isotopic analyses of ores.

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Unruh, Ana Luise. « Lead and hafnium isotopic studies of Eurasian loess ». Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365301.

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Plus de sources

Livres sur le sujet "Provenance studie"

Hopmans, Anita. Verwerving en restitutie : de zaak Toorop : Een studie naar de herkomst van twee kunstwerken = Acquisition and restitution : the Toorop case : a study into the provenance of two art works. Rotterdam : Museum Boijmans Van Beuningen, 2008.

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Verwerving en restitutie : de zaak Toorop : Een studie naar de herkomst van twee kunstwerken = Acquisition and restitution : the Toorop case : a study into the provenance of two art works. Rotterdam : Museum Boijmans Van Beuningen, 2008.

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C, Morton A., Todd S. P et Haughton P. D. W, dir. Developments in sedimentary provenance studies. London : Geological Society, 1991.

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Abhijit, Basu, dir. Quantitative provenance studies in Italy = : Studi di provenienza quantitativa in Italia. Roma : Istituto poligrafico e Zecca dello Stato, 2002.

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Tom, Nesmith, Society of American Archivists et Association of Canadian Archivists, dir. Canadian archival studies and the rediscovery of provenance. Metuchen, N.J : Scarecrow Press, 1993.

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J, Bwanali Richard, et Forestry Research Institute of Malawi., dir. Phenological studies of an international provenance trial of Sclerocarya birrea in Malawi. [Zomba, Malawi : Forestry Research Institute of Malawi, 2004.

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Marantidou, Panagiota. Terracotta statues and figurines of cypriote type found in the Aegean : Provenance studies. Nicosia : A. G. Leventis Foundation, 2009.

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Pierce, Elizabeth Lane. Antarctica's Geologic and Ice Sheet History from Isotopic Sedimentary Provenance Studies. [New York, N.Y.?] : [publisher not identified], 2012.

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Kuzʹmin, I︠A︡. V., editor of compilation, dir. Methodological issues for characterisation and provenance studies of obsidian in Northeast Asia. Oxford : Archaeopress, 2014.

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Kunstfälschung & Provenienzforschung : Am Beispiel von drei Fälschungen aus dem aktuellen Kunstmarkt. Mainz : Chorus Verlag für Kunst und Wissenschaft, 2013.

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Chapitres de livres sur le sujet "Provenance studie"

Malainey, Mary E. « Provenance Studies ». Dans Manuals in Archaeological Method, Theory and Technique, 169–76. New York, NY : Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-5704-7_12.

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Hauptmann, Andreas. « Provenance Studies ». Dans Natural Science in Archaeology, 471–506. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-50367-3_11.

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Morton, Andrew C. « Heavy Minerals in Provenance Studies ». Dans Provenance of Arenites, 249–77. Dordrecht : Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-017-2809-6_12.

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Matter, Albert, et Karl Ramseyer. « Cathodoluminescence Microscopy as a Tool for Provenance Studies of Sandstones ». Dans Provenance of Arenites, 191–211. Dordrecht : Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-017-2809-6_9.

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Kolb, Charles C. « Provenance Studies in Archaeology ». Dans Encyclopedia of Global Archaeology, 8962–72. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-30018-0_327.

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Kolb, Charles C. « Provenance Studies in Archaeology ». Dans Encyclopedia of Global Archaeology, 1–11. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-51726-1_327-2.

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Kolb, Charles C. « Provenance Studies in Archaeology ». Dans Encyclopedia of Global Archaeology, 6172–81. New York, NY : Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4419-0465-2_327.

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Heller, Paul L., et Carol D. Frost. « Isotopic Provenance of Clastic Deposits : Application of Geochemistry to Sedimentary Provenance Studies ». Dans Frontiers in Sedimentary Geology, 27–42. New York, NY : Springer New York, 1988. http://dx.doi.org/10.1007/978-1-4612-3788-4_2.

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Altintas, Ilkay, Manish Kumar Anand, Daniel Crawl, Shawn Bowers, Adam Belloum, Paolo Missier, Bertram Ludäscher, Carole A. Goble et Peter M. A. Sloot. « Understanding Collaborative Studies through Interoperable Workflow Provenance ». Dans Lecture Notes in Computer Science, 42–58. Berlin, Heidelberg : Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-17819-1_6.

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Ferdous, Rayhan, Banani Roy, Chanchal K. Roy et Kevin A. Schneider. « Workflow Provenance for Big Data : From Modelling to Reporting ». Dans Studies in Big Data, 185–200. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-32587-9_11.

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Actes de conférences sur le sujet "Provenance studie"

Bourgaux, Camille, Ana Ozaki, Rafael Penaloza et Livia Predoiu. « Provenance for the Description Logic ELHr ». Dans Twenty-Ninth International Joint Conference on Artificial Intelligence and Seventeenth Pacific Rim International Conference on Artificial Intelligence {IJCAI-PRICAI-20}. California : International Joint Conferences on Artificial Intelligence Organization, 2020. http://dx.doi.org/10.24963/ijcai.2020/258.

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We address the problem of handling provenance information in ELHr ontologies. We consider a setting recently introduced for ontology-based data access, based on semirings and extending classical data provenance, in which ontology axioms are annotated with provenance tokens. A consequence inherits the provenance of the axioms involved in deriving it, yielding a provenance polynomial as an annotation. We analyse the semantics for the ELHr case and show that the presence of conjunctions poses various difficulties for handling provenance, some of which are mitigated by assuming multiplicative idempotency of the semiring. Under this assumption, we study three problems: ontology completion with provenance, computing the set of relevant axioms for a consequence, and query answering.

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Calvanese, Diego, Davide Lanti, Ana Ozaki, Rafael Penaloza et Guohui Xiao. « Enriching Ontology-based Data Access with Provenance ». Dans Twenty-Eighth International Joint Conference on Artificial Intelligence {IJCAI-19}. California : International Joint Conferences on Artificial Intelligence Organization, 2019. http://dx.doi.org/10.24963/ijcai.2019/224.

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Ontology-based data access (OBDA) is a popular paradigm for querying heterogeneous data sources by connecting them through mappings to an ontology. In OBDA, it is often difficult to reconstruct why a tuple occurs in the answer of a query. We address this challenge by enriching OBDA with provenance semirings, taking inspiration from database theory. In particular, we investigate the problems of (i) deciding whether a provenance annotated OBDA instance entails a provenance annotated conjunctive query, and (ii) computing a polynomial representing the provenance of a query entailed by a provenance annotated OBDA instance. Differently from pure databases, in our case, these polynomials may be infinite. To regain finiteness, we consider idempotent semirings, and study the complexity in the case of DL-LiteR ontologies. We implement Task (ii) in a state-of-the-art OBDA system and show the practical feasibility of the approach through an extensive evaluation against two popular benchmarks.

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Ruscheinski, Andreas, et Adelinde Uhrmacher. « Provenance in modeling and simulation studies — Bridging gaps ». Dans 2017 Winter Simulation Conference (WSC). IEEE, 2017. http://dx.doi.org/10.1109/wsc.2017.8247839.

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Bourgaux, Camille, Pierre Bourhis, Liat Peterfreund et Michaël Thomazo. « Revisiting Semiring Provenance for Datalog ». Dans 19th International Conference on Principles of Knowledge Representation and Reasoning {KR-2022}. California : International Joint Conferences on Artificial Intelligence Organization, 2022. http://dx.doi.org/10.24963/kr.2022/10.

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Data provenance consists in bookkeeping meta information during query evaluation, in order to enrich query results with their trust level, likelihood, evaluation cost, and more. The framework of semiring provenance abstracts from the specific kind of meta information that annotates the data. While the definition of semiring provenance is uncontroversial for unions of conjunctive queries, the picture is less clear for Datalog. Indeed, the original definition might include infinite computations, and is not consistent with other proposals for Datalog semantics over annotated data. In this work, we propose and investigate several provenance semantics, based on different approaches for defining classical Datalog semantics. We study the relationship between these semantics, and introduce properties that allow us to analyze and compare them.

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Okiotor, Michael Edirin, et EDeh Desiree Ogueh. « Geochemical Characteristics of the Campano-Maastrictian Sediments of the Anambra Basin, Southeastern Nigeria - Implication For Provenance, Paleodepositional Environment, Maturity and Tectonic Setting ». Dans SPE Nigeria Annual International Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/207170-ms.

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Abstract The present study investigates the Anambra Basin shales to determine the provenance and maturity of the sediments using standard geochemical techniques. Twelve (12) representative samples recovered from shale sequences of The Mamu Formation and Nkporo Group of The Anambra Basin were studied to determine the sediment provenance, paleoenvironment, diagenetic conditions, maturity as well as the tectonic setting. To consider in detail and establish the inherent constituents of the Major minerals, Trace and Rare Earth elements, Inductively Coupled Plasma Mass Spectrometry (ICP-MS) analyses techniques was employed. The detrital minerals determined are Al2O3 (18.27% and 21.16%), TiO2 (1.73% and 1.63%) and Fe2O3 (2.78% \ and 2.85%), for Nkporo Group and Mamu Formation respectively. The enrichment of SiO2, Al2O3 and TiO2 (1.14, 1.94, 3.67 respectively) supported by Chemical Index of Alteration (CIA) of 93.54 & 39.55 and Rb/Sr ratio of 0.57 & 0.40, indicate that the Anambra Basin sediments are matured. TiO2/AL2O3 binary plots, Th/Co Vs La/Sc crossplots, Th-Sc-Zr triplots and Cr, Ni concentration suggest mixed provenance of felsic to mafic source rocks for these sediments. From the log (K2O/Na2O) Vs SiO2 crossplots, a passive margin tectonic setting was determined for these sediments.

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Vasilescu, Angela, Bogdan Constantinescu, Roxana Bugoi, Martin Radtke, Uwe Reinholz, Rolf Simon, Melissa Denecke et Clive T. Walker. « Gold Provenance Studies for Romanian Archaeological Objects Using Micro-SR-XRF ». Dans X-RAY OPTICS AND MICROANALYSIS : Proceedings of the 20th International Congress. AIP, 2010. http://dx.doi.org/10.1063/1.3399240.

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Lauzon, David, Beatriz Kanzki, Victor Dupuy, Alain April, Michael S. Phillips, Johanne Tremblay et Pavel Hamet. « Addressing Provenance Issues in Big Data Genome Wide Association Studies (GWAS) ». Dans 2016 IEEE First International Conference on Connected Health : Applications, Systems and Engineering Technologies (CHASE). IEEE, 2016. http://dx.doi.org/10.1109/chase.2016.79.

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Clemens, Hannah, et Bosiljka Glumac. « INTRASAMPLE VARIATIONS IN STABLE ISOTOPE COMPOSITION OF CARRARA MARBLE : IMPLICATIONS FOR PROVENANCE STUDIES ». Dans GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-316501.

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Renson, Virginie, Hector Neff, David Cheetham, Jeffrey Blomster, James Guthrie et Michael D. Glascock. « ABOUT THE USE OF LEAD AND STRONTIUM ISOTOPES AS TRACERS IN POTTERY PROVENANCE STUDIES ». Dans GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-301613.

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Zhen, Huang, Yang Bo, Li Guoying, Ren Jian et Wang Xiaoling. « The Model of Sandbody Controlled by Dynamic Provenance System and its Exploration Significance in Superposition Area of Strike-Slip and Extension Stress in the South of Bohai Sea ». Dans International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21192-ms.

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Abstract Laizhouwan sag in Bohai Bay basin is a fault basin controlled by extensional fault depression and strike slip pull apart, which is an important oil and gas exploration area in Bohai Bay. Exploration practice shows that the prediction of high quality reservoir is the core problem of exploration in this area. Based on the analysis of drilling, seismic data and structural physical simulation in Laizhouwan depression, this paper analyzes the structural deformation under the stress field of strike slip extensional superposition, and points out the dynamic source controlled sand model in the strike slip extensional superposition area. Firstly, The structural response of "pressure relief settlement, pressure boosting uplift" under the mechanism of strike slip extension stress superposition stress is the root cause of block uplift drop alternation transformation. As a result, the southern slope zone of Laizhouwan depression shows the structural pattern of early uplift and late uplift in the East and early uplift and late uplift in the west, forming a "seesaw" structural evolution pattern. Secondly, the unique paleogeomorphology controls the orderly distribution of sedimentary system in time and space. In the Paleocene, the east uplifted, forming a local provenance system. In the denudation area above the slope break developed fracture weathering shell type reservoirs, and the subsidence area under the slope break developed fan delta deposits; In the early Eocene, the relatively flat platform palaeogeomorphology was developed, which created favorable conditions for the development of mixed sedimentary body of lacustrine carbonate and delta; At the end of Eocene, the West was pressurized and uplifted, the East was released and subsided, and the braided river delta sediments of Western provenance were developed. Under the guidance of this recognition, the hidden dynamic provenance was successfully identified in the study area.

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Rapports d'organisations sur le sujet "Provenance studie"

Bundtzen, T. K., B. C. Cox et N. C. Veach. Heavy mineral provenance studies in the Iditarod and Innoko districts, western Alaska. Alaska Division of Geological & Geophysical Surveys, 1987. http://dx.doi.org/10.14509/1318.

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Perkey, David W., Anthony M. Priestas, Jeffrey M. Corbino, Gary L. Brown, Michael A. Hartman, Danielle R. N. Tarpley et Loung Phu V. Sediment Provenance Studies of the Calcasieu Ship Channel, Louisiana : A Synopsis Report. U.S. Army Engineer Research and Development Center, juillet 2022. http://dx.doi.org/10.21079/11681/44905.

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To maintain the navigability of the Calcasieu Ship Channel (CSC), the US Army Corps of Engineers annually dredges millions of cubic yards of sediment from the inland channel. To assess sources of channel shoaling, a previous study examined river and bankline erosion as inputs. Results from that study accounted for approximately 20% of dredged volumes. Through the support of the Regional Sediment Management Program, a follow-up investigation reviewed prior sediment budgets, identified potential missing sediment sources, modeled potential sediment pathways, and utilized geochemical fingerprinting to discern primary shoaling sources to the channel. The missing sediment sources from the original budget include coastally derived sediment from the Gulf of Mexico and terrestrially derived sediment from Lake Calcasieu and surrounding wetlands. Results from geochemical fingerprinting of various potential sediment sources indicate the Calcasieu River and the Gulf of Mexico are primary contributors of sediment to the CSC, and sediments sourced from bankline erosion, Lake Calcasieu bed, and interior wetlands are secondary in nature. These results suggest that engineering solutions to control shoaling in the CSC should be focused on sources originating from the Gulf of Mexico and river headwaters as opposed to Lake Calcasieu, channel banklines, and surrounding wetlands.

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Byrnes, Mark. Provenance study of late Eocene arkosic sandstones in southwest and central Washington. Portland State University Library, janvier 2000. http://dx.doi.org/10.15760/etd.5290.

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Holdeman, Amanda. Provenance Studies of the Ballast Stones found in the North Bay of Tel Dor, Israel. Honor Frost Foundation, 2020. http://dx.doi.org/10.33583/mags2019.01.

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Knight, R. D., et H. A. J. Russell. Quantifying the invisible : pXRF analyses of three boreholes, British Columbia and Ontario. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/331176.

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Portable X-ray fluorescence (pXRF) technology collects geochemical data at a fraction of the cost of traditional laboratory methods. Although the pXRF spectrometer provides concentrations for 41 elements, only a subset of these elements meet the criteria for definitive, quantitative, and qualitative data. However, high-quality pXRF data obtained by correct application of analytical protocols, can provide robust insight to stratigraphy and sediment characteristics that are often not observed by, for example, visual core logging, grain size analysis, and geophysical logging. We present examples of geochemical results obtained from pXRF analysis of drill core samples from three boreholes located in Canada, that demonstrate: 1) Definitive stratigraphic boundaries observed in geochemical changes obtained from 380 analyses collected over 150 m of core, which intersects three Ordovician sedimentary formations and Precambrian granite. These boundaries could not be reconciled by traditional visual core logging methods. 2) Significant elemental concentration changes observed in 120 samples collected in each of two ~120 m deep boreholes located in a confined paleo-glacial foreland basin. The collected geochemical data provide insight to sediment provenance and stratigraphic relationships that were previously unknown. 3) Abrupt changes in the geochemical signature in a subset of 135 samples collected from a 151 m deep borehole intersecting Quaternary glacial derived till, sands, and ahomogeneous silt and clay succession. These data provide a platform for discussion on ice sheet dynamics, changes in depositional setting, and changes in provenance. Results from each of these studies highlights previously unknown (invisible) geological information revealed through geochemical analyses. A significant benefit of using pXRF technology is refining sampling strategies in near real time and the ability to increase sample density at geochemical boundaries with little increase in analysis time or budget. The data also provide an opportunity to establish a chemostratigraphic framework that complements other stratigraphic correlation techniques, including geophysical methods. Overall, data collected with pXRF technology provide new insights into topics such as spatial correlations, facies changes, provenance changes, and depositional environment changes.

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Kerr, D. E., R. D. Knight, D. R. Sharpe, D. I. Cummings, B A Kjarsgaard et H. A. J. Russell. Dispersal and provenance studies of clasts in till and eskers in the proposed National Park Reserve, east arm of Great Slave Lake. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2013. http://dx.doi.org/10.4095/292457.

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Triantafyllidis, S., G. Pe-Piper, X. Yang et C. Hillier. Detrital zircons as provenance indicators in the Lower Cretaceous sedimentary rocks of the Scotian Basin, eastern Canada : a SEM-CL study of textures. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2008. http://dx.doi.org/10.4095/226104.

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McNicoll, V. J., C. R. van Staal, D. Lentz et R. Stern. Uranium-lead geochronology of Middle River rhyolite : implications for the provenance of basement rocks of the Bathurst mining camp, New Brunswick ; Radiogenic Age and Isotopic Studies : Report 15. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2002. http://dx.doi.org/10.4095/213625.

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Thurston, Alison, Zoe Courville, Lauren Farnsworth, Ross Lieblappen, Shelby Rosten, John Fegyveresi, Stacy Doherty, Robert Jones et Robyn Barbato. Microscale dynamics between dust and microorganisms in alpine snowpack. Engineer Research and Development Center (U.S.), mars 2021. http://dx.doi.org/10.21079/11681/40079.

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Dust particles carry microbial and chemical signatures from source regions to deposition regions. Dust and its occupying microorganisms are incorporated into, and can alter, snowpack physical properties including snow structure and resultant radiative and mechanical properties that in turn affect larger-scale properties, including surrounding hydrology and maneuverability. Microorganisms attached to deposited dust maintain genetic evidence of source substrates and can be potentially used as bio-sensors. The objective of this study was to investigate the impact of dust-associated microbial deposition on snowpack and microstructure. As part of this effort, we characterized the microbial communities deposited through dust transport, examined dust provenance, and identified the microscale location and fate of dust within a changing snow matrix. We found dust characteristics varied with deposition event and that dust particles were generally embedded in the snow grains, with a small fraction of the dust particles residing on the exterior of the snow matrix. Dust deposition appears to retard expected late season snow grain growth. Both bacteria and fungi were identified in the collected snow samples.

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Uplift of the Bighorn Mountains, Wyoming and Montana ; a sandstone provenance study. US Geological Survey, 1991. http://dx.doi.org/10.3133/b1917d.

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