241 results on '"Incremental growth"'
Search Results
2. The Incremental Growth of Data Infrastructure in Ecology (1980–2020).
- Author
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Baker, Karen S. and Millerand, Florence
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DATA libraries , *OPEN scholarship , *DIGITAL technology , *INFORMATION networks , *INFORMATION storage & retrieval systems - Abstract
After decades of growth, a research community's network information system and data repository were transformed to become a national data management office and a major element of data infrastructure for ecology and the environmental sciences. Developing functional data infrastructures is key to the support of ongoing Open Science and Open Data efforts. This example of data infrastructure growth contrasts with the top‐down development typical of many digital initiatives. The trajectory of this network information system evolved within a collaborative, long‐term ecological research community. This particular community is funded to conduct ecological research while collective data management is also carried out across its geographically dispersed study sites. From this longitudinal ethnography, we describe an Incremental Growth Model that includes a sequence of six relatively stable phases where each phase is initiated by a rapid response to a major pivotal event. Exploring these phases and the roles of data workers provides insight into major characteristics of digital growth. Further, a transformation in assumptions about data management is reported for each phase. Investigating the growth of a community information system over four decades as it becomes data infrastructure reveals details of its social, technical, and institutional dynamics. In addition to addressing how digital data infrastructure characteristics change, this study also considers when the growth of data infrastructure begins. [ABSTRACT FROM AUTHOR]
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- 2024
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3. Post-war: Reclaiming Life in Kherson, Ukraine
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Rakhmanova, Sofiia and Rakhmanova, Sofiia
- Abstract
In my master's thesis, I explore the post-war scenario in Ukraine, focusing on the aftermath of the conflict. My primary objective is to formulate a comprehensive strategy that not only accelerates the reconstruction process but also promotes sustainable growth in a targeted area. For my project, I have chosen the city of Kherson. Positioned as a vital port city on the Black Sea and the Dnieper River, Kherson plays a vital role in the regional economy. Following its liberation from Russian occupation during the war, Kherson faced additional challenges, including the destruction of a nearby dam and flooding in June 2023. Understanding the specific needs and aspirations of the displaced population in Kherson is paramount. Through an analysis of location-based data, I was able to identify key challenges and opportunities in this post-conflict environment. In designing the space, symbolism plays a crucial role in reflecting the resilience and determination of the local population. The design concept begins with 255 columns, symbolizing the amount of days of Kherson's occupation under Russian control. Prefabrication of elements is prioritized not only to streamline construction processes but also to support local industries, such as reinforced concrete production, which are integral to the city's economy. Dimensional considerations are guided by the capabilities of these local producers. Central to my development strategy is the principle of incremental growth, which emphasizes flexibility and adaptability in design. By adopting this approach, I aim to ensure that the spaces I create can evolve in tandem with the changing needs and aspirations of the community over time.
- Published
- 2024
4. Institutional Change in ASEAN: A Conceptual Analysis of the ASEAN Political-Security Community
- Author
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Kwei-Bo Huang
- Subjects
institutional change ,southeast asia ,asean ,asean political-security community (apsc) ,incremental growth ,Military Science - Abstract
Objectives: To figure out whether adaptation – specifically, Ernst B. Hass’ incremental growth model – is able to account for institutional changes of ASEAN in the shape of the ASEAN Political-Security Community (APSC). Methods: Use Ernst Hass' theoretical arguments and propositions to examine some of ASEAN's internal and external factors that have an impact on the discussion, planning, and implementation of the APSC. Three variables -- the types of knowledge used by ASEAN leaders in making choices, their political objectives, as well as the manner in which issues being negotiated -- are found in historical documents and academic analyses and then operationalized in a simpler way. Results: The selection of the incremental growth model is justified and the incremental growth model can serve as an innovative analytical framework for the institutional change in ASEAN. Conclusions: ASEAN is in a dynamic context where increased expectations and pressure from within and outside are taking place all at once. The institutionalization of ASEAN security arrangements, originally led by the initiation of the ASC/APSC, means that ASEAN has started facing these expectations and pressure and moved on to enhance security cooperation to a certain degree. It is time for students of international relations to apply again the previous finding of adaptation through incremental growth and conduct further field investigations into the current evolution of the APSC.
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- 2020
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5. Lead uptake into calcified and keratinized compartments of horns from a convenience sample of lead-dosed goats.
- Author
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Tehrani, Mina W., Galusha, Aubrey L., Kannan, Arnav, and Parsons, Patrick J.
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INDUCTIVELY coupled plasma mass spectrometry , *AUTOPSY , *ABSORBED dose , *DRILL core analysis , *GOATS - Abstract
Hair and/or nail analyses are sometimes used in biomonitoring studies due to the convenience of sample collection, storage, and transport, as well as the potential to assess past exposures to toxic metals, such as lead (Pb). However, the validity of Pb measurements in these keratinized matrices as biomarkers of absorbed dose remains unclear. The aim of this study was to examine the uptake of Pb into horns harvested postmortem from 11 goats that received a cumulative oral dose of up to 151 g Pb acetate over a period of 1–11 years as part of a long-term blood Pb proficiency testing program. Uptake of Pb into keratinized horn was compared to the corresponding underlying bony horn core, which, as part of the bone compartment, provided a measure of absorbed Pb dose. Two complementary analytical techniques were used to assess Pb: X-Ray Fluorescence (XRF) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS). Detectable amounts of Pb were found in all keratinized horn samples (0.45–6.6 µg/g) and in all but one bony core sample (1.4–68 µg/g). In both bony core and keratinized horn samples, Pb accumulation increased with dose over a low-to-moderate cumulative-dose interval, consistent with previous observations, but plateaued at higher doses. Significant associations were observed between Pb in keratinized horn and bony core samples particularly with XRF measurements, which represent the surface bone compartment. These findings provide evidence that Pb is excreted in keratinized tissues but reflects only a small fraction of the absorbed Pb dose, likely transferred from underlying bone tissue. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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6. Construyendo con Tierra:Weaving Community with Clay and Straw
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Loayza Velasque, Peter
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- Architecture, affordability, informality, community, incremental growth, self-help construction, adobe
- Abstract
The ongoing housing crisis poses a challenge to urban areas around the world. Whereas in developed countries this crisis has to do with a shortage of housing, in developing countries the addition of poor urban and architectural conditions makes the problem worse. In a developing country like Peru, the creation of informal squatter settlements on the fringes of the cities are not only eroding the urban fabric, but also becoming a threat to the safety of the people living in these areas. This means that there is the potential for the physical, and therefore social, collapse of the built environment in the event of an earthquake event.The city of Cusco in Peru has seen a sharp urban growth over the past decades. The increasingly difficult farming conditions, due to climate change, and the promising economic growth due to tourism incentivizes people living in the rural areas to move to the city. However, when these people arrive in the city, their hopes and dreams are confronted with a harsh reality. The price of the land in the city is very expensive and the cost to build a house that follows the regulations is even higher. Thus, they are pushed to the outskirts, where the price of the land is cheaper, and they can build their house through informal means. An added difficulty is the challenging topography given that the fringes of the city are usually located on the hillsides. By considering the topographical and cultural challenges of these areas, this thesis proposes an urban and architectural solution that deals with the problems posed by urban sprawl and informal construction. The literature review studies two key characteristics of the informal housing in Peru: self-help construction and incremental growth. The theoretical aspects of these characteristics are complemented by the study of precedents located in sites with similar social and cultural conditions. Then a thorough study of the evolution of the single-family housing unit in Cusco from Inca to contemporary times is described. As a result of this study, the use of adobe, a traditional construction technique that uses sun-dried mud bricks, is further examined and proposed as the construction technique for the production of affordable housing.The selected area of study is a squatter settlement located on the fringes of Cusco called Mosoq Wasi. The current conditions of the area are analyzed and a proposal for the re-development of the settlement is put forward. Three scales of work are encompassed: informal settlement scale, building unit scale, and material scale. These scales aim to produce a comprehensive urban and architectural intervention that is rooted in its local context and advocates for the development of social and affordable housing that is properly articulated with public spaces.The proposal aims to produce a set of urban and architectural design tools that can be applied to the community of Mosoq Wasi but that can also be applied to other areas of similar conditions around the city.
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- 2024
7. SOCIAL HOUSING IN THE CASE OF REPUBLIC OF NORTH MACEDONIA.
- Author
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Kuliqi, Kaltrina Elezi and Elezi, Arbnore
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HIERARCHY of needs theory (Psychology) ,RIGHT to housing ,HOUSING ,HOME ownership ,INDUSTRIAL revolution - Abstract
One of the biggest goals in any human's life is to live in a satisfactory dwelling. Housing is one of the essential means considering Maslow's hierarchy of needs, covering physiological needs such as shelter, a place for sleeping, rest, eating, clothing, raising a family. In the Republic of North Macedonia, the right of every citizen to a humane home is in the very spirit of the Constitution, and socially vulnerable groups are protected by specific Laws. In this paper we try to explore the social housing in the case of the RNM. We analyse the actions that the state has employed to address this issue: building social housing for low-income citizens and the strategy 'Buy a house, buy an apartment. In this analysis, we can notice that the solution is not perfect, and other issues emerge from it. In a brief review of a case study from Chile, we find the participatory design as a successful strategy to translate the elementary needs of social cases into architecture. Incremental growth in this case is the ultimate tactic that enabled the architects to fulfil what initially seemed like an impossible design task. [ABSTRACT FROM AUTHOR]
- Published
- 2020
8. Compositional changes with incremental growth of the Quxu granite batholith, southern Tibet: Evidence from geochronology and geochemistry.
- Author
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Zhang, Ying-Ze, Wang, Xiao-Lei, Guan, Yue, Hu, Xiu-Mian, Li, Jun-Yong, Du, De-Hong, and Wang, Di
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GEOLOGICAL time scales , *BATHOLITHS , *GEOCHEMISTRY , *PLAGIOCLASE , *GRANITE , *OXYGEN isotopes , *LASER ablation inductively coupled plasma mass spectrometry - Abstract
How to reconstruct the detailed processes and identify the key factors of incremental growth to form a large granite batholith is controversial. Such in-depth investigations along convergent plate boundaries are of great importance for better understanding the growth and reworking of continental crust. This work presents an integrated study of SIMS (secondary ion microscope) U-Pb geochronology, trace elements and oxygen isotopes of zircon, microstructure and chemistry of plagioclase, and whole-rock elemental geochemistry and Sr-Nd isotopes to decipher the temporal compositional change and incremental growth of the Quxu granitoid batholith in the Gangdese magmatic belt, southern Tibet. The Quxu host granitoids are mainly metaluminous and calc-alkaline to high-K calc-alkaline in geochemistry, whilst the melanocratic microgranular enclaves (MMEs) and mafic dykes vary from calc-alkaline to shoshonitic series. New SIMS zircon U-Pb data suggest a prolonged history (ca. 16.6 Myr) for the Quxu batholith accompanied by several episodes of intermediate–mafic magma replenishments. Zircon δ18O and whole-rock (87Sr/86Sr) i values fluctuate from ∼5.6‰ to ∼6.8‰ and from 0.7038 to 0.7085, respectively, while the whole-rock ε Nd (t) values show a fluctuated decrease from +5.2 to −4.5 with time. The calculated Ti-in-zircon temperature (574–903 °C) and oxygen fugacity (ΔFMQ –0.9 to ΔFMQ +3.2) of the granitoid magmas fluctuated as well. The youngest group of the host granitoids is distinguished by the most elevated Th/La (>1.5) and Th/Ce (>1.0) ratios and K 2 O contents (>3.0 wt%) with evolved isotopic compositions, implying pronounced incorporation of supracrustal materials into the source region. Microstructural and compositional features of zircon and plagioclase from the host granitoids indicate that the incremental assembly of Quxu batholith was foremost facilitated by multiple episodes of magma recharge with distinct compositions and sources. The temporal variations of magma condition and composition throughout the lifetime of the magma reservoir highlight the importance of determining the longevity of batholiths and clarifying the discrepancy of individual magma pulses before deciphering the genesis of composite batholith. The aforementioned Sr–Nd–O isotopes show good correlations with the fluctuating whole-rock (La/Yb) N (2.7–68.5) and zircon Eu/Eu* (0.02–1.26) ratios, which further affirms episodic syn -collisional crustal thickening and episodic input of supracrustal material in magma sources. Based on the spatiotemporal variations of geochemistry, we propose a zoned incremental growth model to better illuminate the detailed processes of the incremental amalgamation of the Quxu batholith. [Display omitted] • An integrated study of zircon SIMS U-Pb age, trace elements and oxygen isotopes for Quxu batholith. • A long-lived (∼16.6 Myr) magma reservoir with episodic magma reactivation events. • A progressive involvement of supracrustal materials into the magma sources is observed. • We reconstruct a zoned incremental growth model for the Quxu batholith. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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9. Comparisons in Prosomal Width and Body Weight Among Early Instar Stages of Malaysian Horseshoe Crabs, Carcinoscorpius rotundicauda and Tachypleus gigas in the Laboratory
- Author
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Zadeh, Sh. Shakiba, Christianus, A., Saad, C.R., Hajeb, P., Kamarudin, M.S., Tanacredi, John T., editor, Botton, Mark L., editor, and Smith, David, editor
- Published
- 2009
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10. A New EM Algorithm for Resource Allocation Network
- Author
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Lee, Kyoung-Mi, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Singh, Sameer, editor, Singh, Maneesha, editor, Apte, Chid, editor, and Perner, Petra, editor
- Published
- 2005
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11. Effects of precommercial thinning intensity on growth of Fagus orientalis Lipsky stands over 6 years
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Alkan Günlü, Deniz Güney, Fahrettin Atar, and İbrahim Turna
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Stand development ,Animal science ,Thinning ,biology ,Fagus orientalis ,Growing season ,Forestry ,biology.organism_classification ,Beech ,Intensity (heat transfer) ,Incremental growth ,Mathematics ,Basal area - Abstract
Determining the most suitable intensities for precommercial thinning (PCT) in oriental beech (Fagus orientalis) stands, which cover substantial areas in Turkey and have a high economic and ecological value, is essential to provide higher economic return and obtain well-formed stems. The effects of various rates of PCT interventions on the growth characteristics of natural stands, located in the northern part of Turkey, were explored to determine appropriate thinning rates; 24 experimental PCT plots (4 PCT rates × 3 replications × 2 sites) were established in young thicket-stage stands and four precommercial thinning rates such as light (1 – 1.5 m spacing), moderate (1.5−2.0 m spacing) and heavy (2.5–3.0 m spacing) thinning, including a control plot (i.e., untreated), were applied. At the end of the 2007 and 2010 growing seasons, the diameter and height of the trees were measured and growth analyzed based on the 3-year and 6-year incremental growth. PCT levels were found to have significant (P
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- 2021
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12. Особенности формирования городского расселения в Туве в советский период
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Cultural Studies ,History ,education.field_of_study ,Population ,население ,Communities. Classes. Races ,Incremental growth ,социально-экономическое развитие ,Social life ,история тувы ,урбанизация ,Geography ,HT51-1595 ,Anthropology ,Human settlement ,Capital city ,городское расселение ,Population growth ,тува ,Working age ,Socioeconomics ,education ,Rural population - Abstract
В статье рассмотрены некоторые аспекты из истории появления городских поселений Тувы — городов и поселков городского типа во второй половине ХХ века. Выделены экономические факторы (развитие промышленности, производства), а также некоторые социальные условия (рост жилищного фонда, более высокая заработная плата рабочих городских профессий). Основными источниками формирования и увеличения городского населения названы: придание статуса городских поселений части населенных пунктов, механический прирост жителей городов и трудовая миграция населения из сел Тувы и других районов страны. На статистических данных показана динамика численности горожан с 1959 по 1989 гг., их удельный вес в общей статистике населения Тувы. К 1989 г. удельный вес горожан в республике составил 47,1%. Разница в численности мужчин и женщин среди городского населения в возрасте моложе трудоспособного и в трудоспособном возрасте была незначительной. Практически выровнялось количество городских и сельских семей. Быстрыми темпами росло население столицы г. Кызыла, которое в 1989 г. составляло 27% от общего числа жителей республики. Неравномерность городского расселения населения в Туве, которая сложилась еще в середине ХХ века, продолжает определять современную структуру расселения и основную проблему — продолжающийся переезд сельских жителей в г. Кызыл и на его окраины.
- Published
- 2021
13. Multilateral Evolution and UN Change Processes
- Author
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Knight, W. Andy and Knight, W. Andy
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- 2000
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14. PEOPLING OF OCEANIA: CLARIFYING AN INITIAL SETTLEMENT HORIZON IN THE MARIANA ISLANDS AT 1500 BC
- Author
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Mike T. Carson
- Subjects
010506 paleontology ,Archeology ,060102 archaeology ,Horizon (archaeology) ,06 humanities and the arts ,01 natural sciences ,Archaeology ,Incremental growth ,law.invention ,Geography ,law ,General Earth and Planetary Sciences ,0601 history and archaeology ,Radiocarbon dating ,Chronostratigraphy ,Settlement (litigation) ,0105 earth and related environmental sciences - Abstract
Radiocarbon (14C) has been instrumental in clarifying how people came to inhabit the expanse of Pacific Oceania, now supporting an “incremental growth model” that shows a number of long-distance sea-crossing migrations over the last few millennia. A crucial step in this narrative involved the initial settlement of the remote-distance Oceanic region, in the case of the Mariana Islands around 1500 BC. The Marianas case can be demonstrated through delineation of stratigraphic layers, dating of individual points or features within those layers, redundant dating of samples in secure contexts, localized and taxon-specific corrections for marine samples, and cross-constraining dating of superimposed layer sequences. Based on the technical and methodological lessons from the Marianas example, the further steps of the incremental growth model will continue to be refined across Pacific Oceania. Many of these issues may be relevant for broader research of ancient settlement horizons in other regions.
- Published
- 2020
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15. Public Debt Dynamics in the Western Balkans: Do Social Expenditures and Economic Growth Matter?
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Jovan Đurašković, Milena Radonjić, Julija Cerović Smolović, and Milivoje Radović
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Estimation ,Inflation ,Sociology and Political Science ,media_common.quotation_subject ,Social expenditure ,Monetary economics ,Payment ,Incremental growth ,Order (exchange) ,Debt ,Political Science and International Relations ,Unemployment ,Economics ,media_common - Abstract
The aim of this paper is to examine the determinants of public debt in the Western Balkan countries, with an emphasis on the effects of economic growth and social expenditures. The study covers the period 2006-2017, and we implement the dynamic panel GMM estimation, using both first-difference and system GMM. The results suggest that incremental growth change significantly reduces debt, while social expenditures push the debt-to-GDP ratio up. Also, there is a negative relation between inflation and debt, while interest payments on previous borrowing increase public debt additionally. Finally, unemployment is not statistically significant in this setting. The main policy implication is that policy makers in these countries should favor a growth-oriented policy toolbox and efficiency-oriented social reforms, in order to keep the public debt sustainable in the long run.
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- 2020
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16. Development of the Recent Episode of Tannensterben (Fir Decline) in Eastern Bavaria and the Bavarian Alps
- Author
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Kandler, O., Huettl, Reinhard F., editor, and Mueller-Dombois, Dieter, editor
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- 1993
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17. Ephemeral Magma Reservoirs During the Incremental Growth of the Neoproterozoic Jiuling Composite Batholith in South China
- Author
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Ilya N. Bindeman, Di Wang, Chang-Hong Jiang, Xiao-Lei Wang, De-Hong Du, and Jun-Yong Li
- Subjects
Geophysics ,South china ,Space and Planetary Science ,Geochemistry and Petrology ,Batholith ,Ephemeral key ,Magma ,Earth and Planetary Sciences (miscellaneous) ,Geochemistry ,Incremental growth ,Geology - Published
- 2021
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18. Taking Stock: The Canadian Association of Radiation Oncology 2017 Radiation Oncologist Workforce Study
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Michael Brundage, Guila Delouya, Jean Archambault, Teri Stuckless, C.M. Doll, Ross Halperin, and Shaun K. Loewen
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Adult ,Male ,Canada ,Cancer Research ,medicine.medical_specialty ,medicine.medical_treatment ,Personnel Staffing and Scheduling ,Workload ,Cancer Care Facilities ,Incremental growth ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,Age Distribution ,0302 clinical medicine ,Radiation oncology ,Humans ,Medicine ,Radiology, Nuclear Medicine and imaging ,Sex Ratio ,Societies, Medical ,Radiation oncologist ,Stock (geology) ,Aged ,Retirement ,Radiation ,Radiotherapy ,business.industry ,Radiation Oncologists ,Middle Aged ,Radiation therapy ,Oncology ,Health Care Surveys ,030220 oncology & carcinogenesis ,Family medicine ,Workforce ,Radiation Oncology ,Female ,Gender gap ,Particle Accelerators ,business - Abstract
To identify and report radiation oncologist (RO) workforce demographics, clinical workload trends, and equipment inventory in Canada.The Canadian Association of Radiation Oncology (CARO) distributed an online survey to RO administrative leaders at 47 Canadian cancer centers providing radiation therapy services from June to December 2017. The survey queried RO staff demographics, clinical workload, and equipment inventory from 2014 to 2016.The response rate was 98% and represented 46 of 47 centers for analysis. In 2016, 510 ROs were in practice, with 98 ROs (19.2%) having1.0 full-time equivalent (FTE) clinical work activities because of administration, research, or part-time employment. Most ROs worked full-time (92.0%), were affiliated with a university (77.5%), and worked in communities with a population200,000 (84.9%). Approximately half (52.3%) were ≥46 years old. The male-to female ratio was 1.5:1 or higher in all regions of Canada except for Quebec, where there was no gender gap. Part-time employment was more common among female ROs (P.01). Although FTE staff levels rose steadily between 2014 (456.3) and 2016 (475.8), an increase in patient workload resulted in a rise in the average annual consults per FTE-RO (from 257 to 267). Over a 2-year period, there were 63.5 FTE-recruitments and 44.0 FTE-departures (18.3 FTE-retirements; 25.7 FTE-migration) for a net gain of 19.5 RO-FTEs. An 8.4% increase in FTE staffing to 516 RO-FTEs in 2019 is anticipated, with 22 ROs expected to retire by 2019. There were 251 megavoltage linear accelerators across Canada, with most (39.8%) located in Ontario. Approximately one-fifth (20.7%) of these were older than 10 years and operating beyond the equipment's recommended life span.The Canadian RO workforce demonstrated incremental growth, but rising annual caseloads suggest that radiation therapy demand outpaced RO supply gains. Government funding is required to replace aging equipment in Canada.
- Published
- 2019
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19. Enamel daily secretion rates of deciduous molars from a global sample of children
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Sophie White, Alessia Nava, Rosie Pitfield, Mona Le Luyer, Mark Skinner, Patrick Mahoney, Debbie Guatelli-Steinberg, Carolina Loch, Gina McFarlane, Nina Sabel, Priscilla Bayle, and Bruce Floyd
- Subjects
Molar ,medicine.medical_treatment ,Dentistry ,Biology ,Crown (dentistry) ,Incremental growth ,Mean difference ,QH301 ,stomatognathic system ,medicine ,Humans ,Tooth, Deciduous ,Child ,Dental Enamel ,General Dentistry ,Tooth Crown ,Enamel paint ,business.industry ,Cross striations ,Cell Biology ,General Medicine ,stomatognathic diseases ,Deciduous ,Otorhinolaryngology ,visual_art ,visual_art.visual_art_medium ,business ,Tooth ,Enamel Formation ,Transcription Factors - Abstract
Objective: To investigate and describe the variation in enamel daily secretion rates (DSRs) of naturally exfoliated deciduous molars (n = 345) from five modern-day populations (Aotearoa New Zealand, Britain, Canada, France, and Sweden). \ud \ud Design: Each tooth was thin sectioned and examined using a high-powered Olympus BX51 microscope and DP25 digital microscope camera. Mean DSRs were recorded for the inner, mid, and outer regions of cuspal and lateral enamel, excluding enamel nearest the enamel-dentin junction and at the outermost crown surface.\ud \ud Results: Mean DSRs did not vary significantly between populations, or by sex. Cuspal enamel grew slightly faster than lateral enamel (mean difference 0.16 µm per day; p < 0.001). The trajectory of DSRs remained relatively constant from inner to outer cuspal enamel and increased slightly in lateral enamel (p = 0.003). \ud \ud Conclusions: The DSRs of deciduous molars from modern-day children are remarkably consistent when compared among populations. While growth rates are faster in cuspal than lateral enamel, the trajectory of enamel formation changes only slightly from inner to outer regions. The trajectory of DSRs for deciduous molars differs to that of permanent molar enamel, which typically display a steep increase in matrix deposition from inner to outer enamel.
- Published
- 2021
20. Lead uptake into calcified and keratinized compartments of horns from a convenience sample of lead-dosed goats
- Author
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Patrick J. Parsons, Mina W. Tehrani, Aubrey L. Galusha, and Arnav Kannan
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Male ,Health, Toxicology and Mutagenesis ,Dentistry ,Convenience sample ,010501 environmental sciences ,Toxicology ,01 natural sciences ,Incremental growth ,Mass Spectrometry ,Biomonitoring ,medicine ,Animals ,Lead (electronics) ,0105 earth and related environmental sciences ,Horns ,integumentary system ,business.industry ,Goats ,010401 analytical chemistry ,Bone lead ,Spectrometry, X-Ray Emission ,0104 chemical sciences ,medicine.anatomical_structure ,Lead ,Lead exposure ,Nail (anatomy) ,Environmental Pollutants ,Female ,Sample collection ,business ,Environmental Monitoring - Abstract
Hair and/or nail analyses are sometimes used in biomonitoring studies due to the convenience of sample collection, storage, and transport, as well as the potential to assess past exposures to toxic metals, such as lead (Pb). However, the validity of Pb measurements in these keratinized matrices as biomarkers of absorbed dose remains unclear. The aim of this study was to examine the uptake of Pb into horns harvested
- Published
- 2021
21. Genotype, Nursery Design, and Depth Influence the Growth of Acropora cervicornis Fragments
- Author
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Charles A. Jacoby, Thomas K. Frazer, Holden E. Harris, and Paul Maneval
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0106 biological sciences ,Annual growth rate ,Science ,Ocean Engineering ,Aquatic Science ,QH1-199.5 ,Oceanography ,010603 evolutionary biology ,01 natural sciences ,Annual growth % ,Incremental growth ,03 medical and health sciences ,Genotype ,biofouling ,Acropora ,coral restoration ,030304 developmental biology ,Water Science and Technology ,Staghorn coral ,0303 health sciences ,Global and Planetary Change ,biology ,nursery frames ,temperature ,General. Including nature conservation, geographical distribution ,biology.organism_classification ,nursery trees ,Agronomy ,Natural recovery ,staghorn coral ,Linear growth - Abstract
Growing fragments of corals in nurseries and outplanting them to supplement declining natural populations have gained significant traction worldwide. In the Caribbean, for example, this approach provides colonies of Acropora cervicornis with minimal impacts to existing wild colonies. Given the impetus to scale up production to augment limited natural recovery, managers and researchers should consider how the design and location of the nurseries affect the growth of different genotypes of corals and the effort required for maintenance. To elucidate such influences, we grew fragments of different genotypes (five varieties) on differing structures (trees and frames) at two depths (6–8 and 16–18 m). The sum of the lengths of all branches or total linear extensions (TLEs) and accumulation of biofouling were measured over 198 days from May to December 2016 to assess the growth of fragments and the effort required to maintain nurseries. TLEs for all fragments increased linearly throughout the incubation period. Mean daily incremental growth rates varied among the genotypes, with one genotype growing significantly faster than all others, two genotypes growing at intermediate rates, and two genotypes growing more slowly. Mean daily incremental growth rates were higher for all genotypes suspended from vertical frames at both sites, and mean daily incremental growth rates were higher for all fragments held on both types of nurseries in deeper water. If linear growth continued, a fragment of the fastest growing genotype held on a frame in deeper water was estimated to increase the sum of the length of all its branches by an average of 88 cm y–1, which was over two times higher than the estimated mean annual growth rate for a fragment of the slowest growing genotype held on a tree in shallow water. Nurseries in deeper water had significantly less biofouling and appeared to be buffered against daily fluctuations in temperature. Overall, the results demonstrated that increased production and reduced maintenance can result from considering the genotype of fragments to be cultured and the design and location of nurseries.
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- 2021
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22. Suomen kielen hallinta ja sen kehitys : Peruskoululaiset ja nuoret aikuiset
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Anneli Pajunen, Mikko Laasanen, Mari Honko, Emilia Tuuri, Tampere University, and Kielet
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Structure (mathematical logic) ,Core (game theory) ,Language development ,Vocabulary ,Variable (computer science) ,Grammar ,media_common.quotation_subject ,6121 Kielitieteet ,Certainty ,Psychology ,Incremental growth ,Linguistics ,media_common - Abstract
The topic of the book is the incremental growth of linguistic knowledge from lexical to structural-cum-textual during the so-called later language development. Language mastery does not presuppose any acquaintance with prescriptive grammar but, instead, concerns the core of language which the so-called consensus principle applies to: the most frequent words and structures are mastered with certainty by everybody, but uncertainty increases as less frequent and more variable phenomena are taken into consideration. It is the goal of the study to make explicit the knowledge that is common to school children of different age groups, and to show how it develops both in its core and in its fringe areas. The mastery of less common aspects exhibits considerable statistical variation. The research embodies methodological pluralism insofar as it has been carried out by means both of the corpus method and the experimental method. Here experimental subsumes writing tasks, paper-and-pencil tests, and behavior under experimental conditions. The amount of participants native in Finnish varies from 300–2000. The book has a bipartite structure: mastery of meanings (Part I), and mastery of forms (Part II).
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- 2021
23. Incremental markings in enamel and dentine: what they can tell us about the way teeth grow.
- Abstract
Introduction Those who study human evolution do so for one, or more, of several reasons. For many, the primary goal is to define phylogenetic relationships between species of fossil hominids. For others, the human fossil record provides unique insights into primate biology that help us understand living primates in a wider context. Some view the fossil record differently. It represents one way in which we can begin to understand the mechanisms that underlie morphological change during evolution. In fact, the hominoid fossil record preserves a few details that allow us to determine the ways in which tooth tissues grow after ameloblasts and odontoblasts have become fully differentiated. In recent years, developmental biologists have come much closer to understanding the mechanisms of certain key embryological processes. Evolutionary biologists have also come closer to explaining how morphological change comes about during evolution. Identifying the common processes in ontogeny that regulate and control morphological change during phylogeny is once again one of the primary goals in evolutionary biology. With regard to teeth and jaws, there has been an explosion of knowledge about their embryonic development and about morphogenesis of different tooth types (see Zhao, Weiss and Stock, chapter 11) as well as about the control of dental patterns at the molecular level (see Weiss, 1993; Chapter 5.1, 2). Studies in the embryo of individual rhombomeric crest populations are beginning to establish ultimate homologies between cranial elements and to elucidate which molecular pathways have changed during vertebrate evolution (Koentges and Lumsden, 1996). [ABSTRACT FROM AUTHOR]
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- 2000
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24. Long-lived magmatic systems and implications on the recognition of granite–pegmatite genetic relations: Characterization of the Pavia granitic pegmatites (Ossa-Morena Zone, Portugal).
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Lima, Selma M., Neiva, Ana M.R., Ramos, João M.F., and Cuesta, Andrés
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GRANITE ,PEGMATITES ,IGNEOUS intrusions ,TRACE elements ,MAGMATISM - Abstract
It is generally accepted that pegmatites are derived from large masses of granite but, even in areas where complete mineralogical, chemical and isotopic datasets are available, the relation between pegmatites and host granitic rocks or nearby plutons is usually not simple to address. The Pavia pluton, located in the Ossa-Morena Zone (Iberian Massif), is a multiphase intrusive body constructed over ∼11 m.y. by the amalgamation of several batches of magma. At the first glance, pegmatites seem to constitute a very homogeneous pegmatite field. They are mainly “intragranitic” thin tabular dikes, unzoned, layered, or with simple internal structure and are composed by the ordinary minerals that constitute the different classes of igneous rocks. They also present identical whole rock major and trace elements geochemistry and isotopic signature [( 87 Sr/ 86 Sr) i = 0.70434–0.70581, ɛ Nd t = −1.3 to −3.7 and δ 18 O = 8.2–9.6‰] but, based on previously published geochronological data, three generations of pegmatites were identified. Two of these are coeval with the emplacement of the host granites ( s.l. ) at 328 Ma and ca. 324 Ma. The other is related to a later magmatic event at 319–317 Ma. A similar and rather juvenile source is suggested for host granites ( s.l. ) and pegmatites but a simple and continuous process of intra-chamber magmatic differentiation is not supported by our data. It is suggested that pegmatites derived from slightly evolved batches of magma that interacted with fresh, newly emplaced, batches (from the same or from a similar source) with limited interaction with the crust. Therefore, the Pavia pegmatites do not represent the final products of magmatism at this level of the crust but slightly differentiated products of different batches of magma. This study demonstrates how long-lived magmatic systems can potentially affect the recognition of granite–pegmatite genetic relationships. [ABSTRACT FROM AUTHOR]
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- 2014
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25. A guide for an anatomically sensitive dentine microsampling and age-alignment approach for human teeth isotopic sequences
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Julia A. Lee-Thorp, Andrea Czermak, Teresa Fernández-Crespo, Peter Ditchfield, School of Archaeology, University of Oxford, Laboratoire méditerranéen de préhistoire Europe-Afrique (LAMPEA), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), School of Archaeology [Oxford], University of Oxford, Agence Nationale de la Recherche, Grant/Award Number: DFG246602782, British Academy (Newton International Fellowship), Grant/Award Number: NF170854, Deutsche Forschungsgemeinschaft, Grant/Award Number: DFG246602782, European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement, Grant/Award Number: 790491, John Fell Fund, University of Oxford, Grant/Award Number: EBD10940-151/102., and Fernandez-Crespo, Teresa
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Adult ,Adolescent ,[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory ,Tertiary dentine ,[SHS.ANTHRO-BIO]Humanities and Social Sciences/Biological anthropology ,Incremental growth ,Anthropology, Physical ,Young Adult ,stomatognathic system ,medicine ,Humans ,Cementum ,Child ,ComputingMilieux_MISCELLANEOUS ,Carbon Isotopes ,[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory ,Nitrogen Isotopes ,Infant ,[SHS.ANTHRO-BIO] Humanities and Social Sciences/Biological anthropology ,Diet ,stomatognathic diseases ,medicine.anatomical_structure ,[SHS.HIST] Humanities and Social Sciences/History ,Child, Preschool ,Anthropology ,Temporal resolution ,Dentin ,Secondary dentine ,Age Determination by Teeth ,Anatomy ,[SHS.HIST]Humanities and Social Sciences/History ,Tooth ,Geology ,Biomedical engineering - Abstract
International audience; ObjectivesStable isotope analysis of sequential dentine samples is a potentially powerful method to reveal insights into early life-histories of individuals in the past. Dentine incremental growth structures are complex, however, and current approaches that apply horizontal sectioning of demineralized tooth halves or quarters risk combining multiple growth layers and may include unwanted cementum or secondary dentine. They also require destruction of large parts of a tooth. Here, we present a less destructive and relatively straightforward protocol that reduces damage, increases temporal resolution, and improves the accuracy of age-alignment between individuals.Material and methodsWe outline a protocol that includes the sampling of small (1 mm diameter) cylindrical plug transects from a thin section, along with an age-alignment scheme predicated on average growth rates for dentine areas.Results and discussionThe proposed protocol is readily applicable and more anatomically sensitive than horizontal slicing. Micro-samples are smaller (in both length and depth), hence minimizing temporal overlap and avoid directions that may contravene growth pattern. They completely avoid areas where secondary and tertiary dentine or cementum can be deposited. Age-alignment is improved by using growth ratios of anatomical tooth zones.ConclusionThis method minimizes destruction, enables finer temporal resolution and facilitates data comparison. It can be readily combined with fluorescence imaging-based or other pre-screening methods of dentine collagen preservation.
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- 2020
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26. Applications on Three-Dimensional Mixed Mode Fatigue Crack Propagation Using Fracture and Crack Propagation Analysis System (FCPAS)
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Emre Kurt, Ali Ayhan, and Oğuzhan Demir
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Materials science ,Linear elasticity ,Fracture mechanics ,02 engineering and technology ,Mechanics ,021001 nanoscience & nanotechnology ,Mixed mode ,Finite element method ,Incremental growth ,Physics::Geophysics ,Fatigue crack propagation ,020303 mechanical engineering & transports ,0203 mechanical engineering ,Fracture (geology) ,0210 nano-technology ,Stress intensity factor ,Earth-Surface Processes - Abstract
In this study, results from two applications on three-dimensional fatigue crack propagation using the in-house developed "Fracture and Crack Propagation Analysis System (FCPAS)" are presented. FCPAS uses finite element models to calculate threedimensional mixed mode stress intensity factors and other sub-modules to predict shapes of the incrementally growing crack fronts and the resulting fatigue crack propagation lives. The evolving crack surfaces are generated by successively adding the incremental growth surfaces and re-meshing and re-solving the finite element model using the standalone program FRAC3D, a finite element-based standalone program employing three-dimensional enriched finite elements. The results show that the fracture surfaces evolve into a mode-I type three-dimensional crack as expected. Very good agreements are obtained between the results of the current studies and those of numerical applications in terms of both evolving crack surfaces and crack propagation lives. Therefore, it is concluded that the applied method is capable of accurately predicting linear elastic three-dimensional mixed mode fatigue crack propagation problems. (c) 2019 The Authors.Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/ Peer-review under responsibility of the 1st International Workshop on Plasticity, Damage and Fracture of Engineering Materials organizers
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- 2019
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27. Age and Growth of a Native, Lightly Exploited Population of Coregonus clupeaformis (Lake Whitefish) in a Small Natural Lake in Maine
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Silas K. Ratten, Stephen M. Coghlan, Graham D. Sherwood, Daniel M. Weaver, and Joseph D. Zydlewski
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0106 biological sciences ,Coregonus clupeaformis ,education.field_of_study ,biology ,010604 marine biology & hydrobiology ,Population ,Von bertalanffy ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,Slow growth ,Annual growth % ,Incremental growth ,Fishery ,Growth function ,Maximum size ,education ,Ecology, Evolution, Behavior and Systematics - Abstract
We assessed annual growth of Coregonus clupeaformis (Lake Whitefish) from a natural, lightly exploited population in a small lake in northern Maine using observed and back-calculated length-at-age data. We sampled Lake Whitefish from Clear Lake, ME, with gill nets and extracted otoliths from 57 fish. We incorporated age-at-length data into a von Bertalanffy growth function, which we employed to model growth trajectories from individual fish. We used these estimates to evaluate length-at-age variability within this population. Ages for Lake Whitefish varied from 8 y to 30 y. Among all fish, we characterized incremental growth by an average-growth coefficient of K = 0.156 and an estimated L∞ of 484 mm. The oldest individuals demonstrated the slowest incremental growth (K = 0.106) when compared to younger cohorts (K = 0.218). We observed an inverse relationship between L∞ and K and the estimated age-at-capture (R2 = 0.178 and 0.723, respectively), which suggests relatively slow growth and a smaller maximum size for the longest living members of the population. Our estimated parameters serve as a reference to inform management of populations of Lake Whitefish.
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- 2018
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28. Population Structure for Sea Turtles at Drini Bay: An Important Nearshore Foraging and Developmental Habitat in Albania.
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WHITE, MICHAEL, BOURA, LIZA, and VENIZELOS, LILY
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- *
SEA turtles , *TURTLE populations , *FORAGING behavior , *DEVELOPMENTAL biology - Abstract
Loggerhead sea turtles Caretta caretta using an important shallow-water foraging ground at Drini Bay, Albania, were monitored over 3 consecutive summers (2008-2010). Working closely with local artisanal fishermen, researchers were able to obtain many of the sea turtles captured as bycatch (nontarget species). There were 407 new records (402 loggerhead and 5 green turtles, Chelonia mydas), with most (99%) being captured in 2 stavnike fish traps (a type of pound net) and a few with mrezh (gill nets). Morphometric data were collected from all captured turtles, and they were allocated into 10-cm size classes (length-frequency-distribution) based on their curved carapace length; caudal measurements were used to assess the developmental-stage of secondary sexual characteristics. An unusually high number of male loggerhead turtles (27%) were captured; their morphometric data were subsequently used as a reference for determining if short-tailed turtles might be adult or sexually developing females. Nesting has not been reported for Albania, so the presence of females is unclear. Drini Bay is also a developmental habitat, as 69% of the studied turtles were yet to mature. Interannual recaptures of 26 turtles allowed their incremental growth rate to be calculated. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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29. Incremental growth and origin of the Cretaceous Renjiayingzi pluton, southern Inner Mongolia, China: Evidence from structure, geochemistry and geochronology.
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Li, Shan, Wilde, Simon A., Wang, Tao, and Guo, Qianqian
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- *
IGNEOUS intrusions , *GEOCHEMISTRY , *GEOLOGICAL time scales , *MAGMATISM , *CRUST of the earth - Abstract
Highlights: [•] The Renjiayingzi pluton was built up by an incremental growth of three separate magmatic pulses. [•] The pluton was mainly derived from juvenile crust with minor old crust reworking. [•] Three intrusions were emplaced by upward stacking during the updoming of the roof. [•] The study presents a paradigm for a small pluton showing protracted magmatic emplacement. [ABSTRACT FROM AUTHOR]
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- 2013
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30. Nested Incremental Growth of Zoned Upper Crustal Plutons in the Southern Uplands Terrane, UK: Fractionating, Mixing, and Contaminated Magma Fingers
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Valbone Memeti, Jennifer Chambers, Scott R. Paterson, and Richard Hines
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Geophysics ,010504 meteorology & atmospheric sciences ,Geochemistry and Petrology ,Pluton ,Magma ,Geochemistry ,010502 geochemistry & geophysics ,01 natural sciences ,Geology ,Mixing (physics) ,Incremental growth ,0105 earth and related environmental sciences ,Terrane - Published
- 2018
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31. Tree-Ring Indicators of Fire in Two Old-Growth Coast Redwood Forests
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Stephen C. Sillett, Robert Van Pelt, and Allyson L. Carroll
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0106 biological sciences ,Nature reserve ,geography ,Growth suppression ,geography.geographical_feature_category ,010504 meteorology & atmospheric sciences ,biology ,Sequoia ,Forestry ,Environmental Science (miscellaneous) ,Old-growth forest ,biology.organism_classification ,01 natural sciences ,Incremental growth ,Radial growth ,Dendrochronology ,Environmental science ,Physical geography ,Ecology, Evolution, Behavior and Systematics ,Lower trunk ,010606 plant biology & botany ,0105 earth and related environmental sciences - Abstract
Fires that burn through forests cause changes in wood anatomy and growth that can be used to reconstruct fire histories. Fire is important in Sequoia sempervirens (D. Don) Endl. (coast redwood) forests, but fire histories are limited due to difficulties crossdating annual rings of this species. Here we investigated three fires (1985, 1999, 2008) in two old-growth forests (Montgomery Woods State Natural Reserve and Landels-Hill Big Creek Reserve, California, USA) to quantify these responses via crossdated increment cores from lower trunks of 53 trees, including 10 that were climbed and cored at 10 m height intervals. Redwoods frequently responded to fire by producing anomalous growth during the fire year; 100 of 240 lower trunk cores recorded at least one anatomical indicator (i.e., intra-annual density fluctuation, faint latewood, resin, or scar). Following fire, radial growth decreased by 29% to 43% compared to the fire year. After accounting for climatic influences, radial growth was 27% to 32% lower than expected in the post-fire year and declined to as low as 46 % after three years. Growth suppression persisted for up to seven years after fire, followed by up to 40% higher than expected radial growth. Several of the climbed trees expressed disruption of incremental growth along the height gradient following fire. The 1985 event consistently generated stronger growth and anatomical responses than the 1999 and 2008 events, and showed a co-occurrence between faint latewood during the fire year and subsequent narrow or missing rings. We used post-fire low growth relative to drought combined with anatomical indicators to detect past fires, identifying five additional events at Landels-Hill Big Creek Reserve dating back to 1634. Although other disturbances could have initiated these responses, our detection method enhances current capabilities for the spatiotemporal resolution of redwood fire histories via non-scar indicators on increment cores from living redwoods.
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- 2018
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32. Magmatic epidote in Archean granitoids of the Carajás Province, Amazonian craton, and its stability during magma rise and emplacement
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Luan Alexandre Martins de Sousa, Ingrid Roberta Viana da Cunha, Roberto Dall'Agnol, Bruno Scaillet, Federal University of Para - Universidade Federal do Para [Belem - Brésil], Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO), Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), Magma - UMR7327, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Bureau de Recherches Géologiques et Minières (BRGM) (BRGM)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), ANR-10-LABX-0100,VOLTAIRE,Geofluids and Volatil elements – Earth, Atmosphere, Interfaces – Resources and Environment(2010), and ANR-11-EQPX-0036,PLANEX,Planète Expérimentation: simulation et analyse in-situ en conditions extrêmes(2011)
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Archean ,Pluton ,Geochemistry ,[SDU.STU]Sciences of the Universe [physics]/Earth Sciences ,engineering.material ,010502 geochemistry & geophysics ,01 natural sciences ,010503 geology ,Epidotes ,Magmatic epidote ,0105 earth and related environmental sciences ,Earth-Surface Processes ,geography ,Sanukitoid ,geography.geographical_feature_category ,Viscosity ,Carajás province ,Geology ,Crust ,Epidote ,Craton ,[SDU]Sciences of the Universe [physics] ,Magma ,engineering ,Incremental growth ,Dissolution - Abstract
International audience; In the Rio Maria and Sapucaia Domains of the Carajás Province, during the Mesoarchean, tonalite-trondhjemite-granodiorite (TTG) series (2.98–2.92 Ga; Colorado Trondhjemite) and sanukitoid rocks (∼2.87 Ga; Rio Maria Suite of Ourilândia do Norte) were formed. They were followed, in the Neoarchean (2.75–2.73 Ga), by numerous stocks of granitoids similar to A-type granites (Vila Jussara Suite). Despite the compositional differences between these granitoids, epidote is a mineral phase common to all of them, with pistacite contents of 26–29 mol% in TTGs, 22–33 mol% in sanukitoids and 25–30 mol% in Neoarchean granitoids. The study of the dissolution kinetics of Archean epidotes of the Carajás Province reveals that the partial dissolution time of their crystals was ∼4–10 years, with corresponding magma ascent rates of 4–8 km/year. Magma viscosities at liquidus temperature were estimated at 105.3 Pa s for TTG magma and 102.5 Pa s for sanukitoid magma, whereas monzogranitic magmas of the Vila Jussara Suite exhibited a viscosity of 104.4 Pa s. In contrast, the viscosity of tonalitic magma of the Vila Jussara Suite was 103.5 Pa s. The preservation of magmatic epidote in Archean granitoids requires that the plutons grew in an incremental way, similar to their Phanerozoic counterparts, with the stacking of small sill-dykes of about 100 m thickness each intruded in a rather cold crust, allowing fast cooling rates so as to prevent complete dissolution of epidote at the final emplacement level.
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- 2021
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33. Endnote 14: Patients’ Weight, Skin, Hair, Etc.
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McKeown, Joanne M., Fine, Catherine G., McKeown, Joanne M., editor, and Fine, Catherine G., editor
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- 2008
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34. The Mammoth Peak sheeted complex, Tuolumne batholith, Sierra Nevada, California: a record of initial growth or late thermal contraction in a magma chamber?
- Author
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Žák, Jiří, Paterson, Scott, Janoušek, Vojtěch, and Kabele, Petr
- Subjects
- *
FINITE element method , *COORDINATES , *LINEAR algebra , *MATHEMATICAL transformations , *LINE geometry - Abstract
The Mammoth Peak sheeted intrusive complex formed in the interior of a ~7–10 km deep magma chamber, specifically in the Half Dome granodiorite of the Tuolumne batholith, central Sierra Nevada, CA (USA). The sheets consist of fractionated melts with accumulated hornblende, biotite, magnetite, titanite, apatite, and zircon. The accumulation, especially of titanite, had a profound effect on minor and trace elements (Nb, Ta, Ti, REE, U, Th, P, Zr, Hf, etc.), increasing their contents up to five to six times. Our thermal–mechanical modeling using the finite element method shows that cooling-generated tensile stresses resulted in the inward propagation of two perpendicular sets of dilational cracks in the host granodiorite. We interpret the sheeted complex to have formed by a crack-seal mechanism in a high strength, crystal-rich mush, whereby outward younging pulses of fractionated magma were injected into these syn-magmatic cracks at the margin of an active magma chamber. Thermal–mechanical instabilities developed after the assembly of the sheeted complex, which was then overprinted by late ~NW–SE magmatic foliation. This case example provides a cautionary note regarding the interpretation that sheeted zones in large granitoid plutons imply a diking mechanism of growth because the sheeted/dike complexes in plutons (1) may display inverse growth directions from the growth of the overall intrusive sequence; (2) need not record initial chamber construction and instead may reflect late pulsing of magma within an already constructed magma chamber; (3) have an overprinting magmatic fabric indicating the continued presence of melt after construction of sheeted complexes and thus a prolonged thermal history as compared to dikes; and (4) because the scale of the observed sheeted complexes may be small (<1%) in comparison to large homogenous parts of plutons, in which there is no evidence for sheeting or diking. Thus, where extensive dike complexes in plutons are absent, such as in much of the Tuolumne batholith, the application of an incremental diking model to explain chamber construction is at best speculative. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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35. Incremental growth in modular neural networks
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MacLeod, Christopher, Maxwell, Grant, and Muthuraman, Sethuraman
- Subjects
- *
ALGORITHMS , *ARTIFICIAL neural networks , *BIOLOGICAL neural networks , *COGNITIVE neuroscience - Abstract
Abstract: This paper outlines an algorithm for incrementally growing Artificial Neural Networks. The algorithm allows the network to expand by adding new sub-networks or modules to an existing structure; the modules are trained using an Evolutionary Algorithm. Only the latest module added to the network is trained, the previous structure remains fixed. The algorithm allows information from different data domains to be integrated into the network and because the search space in each iteration is small, large and complex networks with a modular structure can emerge naturally. The paper describes an application of the algorithm to a legged robot and discusses its biological inspiration. [Copyright &y& Elsevier]
- Published
- 2009
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36. Varying growth rates in bamboo corals: sclerochronology and radiocarbon dating of a mid-Holocene deep-water gorgonian skeleton ( Keratoisis sp .: Octocorallia) from Chatham Rise (New Zealand).
- Author
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Noé, S., Lembke-Jene, L., and Dullo, W.-Chr.
- Abstract
A branched mid-Holocene bamboo coral skeleton of the isidid gorgonian genus Keratoisis (Octocorallia) recovered at southwestern Chatham Rise (New Zealand) from an average water depth of 680 m is described with respect to sclerochronology and age determination. Growth rates of the Mg-calcitic internodal increments were investigated by the counting of colour bands and radiocarbon dating. Growth banding is produced by varying orientations of crystal fan bundles towards the image plane. The skeleton shows three growth interruptions, which are documented in all branches. AMS
14 C ages decrease from base to top of the trunk and from the central axes to the margins of the branches, documenting a simultaneous vertical and lateral growth. The data provide a maximum age of 3,975 ± 35 years BP, and a record spanning 240 ± 35 years. While calculated longitudinal growth rates amount to an average of 5 mm year−1 during a 55-year record, average lateral linear extension rates of 0.4 mm year−1 are an order of magnitude lower, still allowing for a seasonal to annual resolution of colour bands on a macroscopic scale and for a daily to monthly resolution on microscales of individual crystal generations to fascicle bundles. Hence, the isidid skeleton provides a high-resolution archive of paleoceanographic dynamics in deeper water masses. Concentric incremental accretion around the central axis in the early growth stages changed into a unilaterally asymmetric growth during late-stage evolution, probably triggered by the establishment of a stable system of unidirectional currents and nutrient flux. While colour band counts, related to the AMS14 C ages, support a seasonal to annual accretion of macroscopic growth bands in the inner concentric and complete outer parts of the skeleton, incremental growth rates at the condensed side are highly variable, as documented by hiatuses and unconformities. Thus the specimen proves that growth rates of bamboo corals may vary within individual skeletons and strongly deviate from the annual mode, hence showing implications on paleoceanographic proxy analyses. [ABSTRACT FROM AUTHOR]- Published
- 2008
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37. Research on the alliance: Knowledge in search of a theory
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Adam O. Horvath
- Subjects
050103 clinical psychology ,Psychotherapist ,Therapeutic Alliance ,Operational definition ,05 social sciences ,Identity (social science) ,Context (language use) ,Incremental growth ,030227 psychiatry ,law.invention ,03 medical and health sciences ,Clinical Psychology ,0302 clinical medicine ,Alliance ,law ,Research community ,CLARITY ,Humans ,0501 psychology and cognitive sciences ,Psychological Theory ,Psychology - Abstract
The aim of this review paper is to summarize the challenges facing research on the alliance now and going forward. The review begins with a brief overview of the development of the concept of the alliance in historical context.A summary of what has been accomplished both within the psychotherapy research community and in other professions is presented. Current challenges facing this line of research are identified, including the existence of a wide range of operational definitions that results in a diffusion of the identity of the alliance concept. It is argued that the current situation generates risks to incremental growth in several lines of research.A case is made that a lack of clarity regarding how several variables within the broader category of therapeutic relationships fit together, overlap, or complement each other is also potentially problematic. Efforts to resolve the lack of a consensual definition are reviewed, and in conclusion, it is argued that a resumption of a conversation about the relationship in the helping context in general, and the alliance in particular, should be resumed.
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- 2017
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38. Incremental pluton emplacement by magmatic crack-seal.
- Author
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Bartley, John M., Coleman, Drew S., and Glazner, Allen F.
- Abstract
A growing body of evidence indicates that some, and perhaps most, plutons are highly composite. However, the geometrical forms of increments and the processes by which they are added are poorly known. Magmatic crack-seal probably is an important incremental assembly process, particularly in the upper crust where wall-rock fracture is important. Evidence for magmatic crack-seal is clearest where it is antitaxial, i.e., new fractures form at the contact between wall rock and a growing intrusion. Local deviation of antitaxial cracks into wall rocks isolates wall-rock bodies that therefore mark increment contacts. Wall rock isolated by this process remains in situ and thus is likely to preserve a ghost stratigraphy. Previously described plutons are identified, and interpreted to have grown by antitaxial magmatic crack-seal. In contrast, it remains unclear what observable geological record may remain in plutons formed by syntaxial crack-seal, in which new cracks form in the middle of the growing pluton. Several plutons are identified that preserve possible indirect evidence for growth by syntaxial crack seal, but conclusive identification of a direct record of the process remains elusive. However, plutons with sharp discordant contacts but few xenoliths may have been emplaced incrementally by syntaxial magmatic crack-seal. [ABSTRACT FROM PUBLISHER]
- Published
- 2006
- Full Text
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39. Strategies for building a successful ultrasound guided FNA practice in department of pathology-Experience at a university hospital
- Author
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Maoxin Wu and Kenneth R. Shroyer
- Subjects
Thyroid nodules ,Pathology ,medicine.medical_specialty ,Histology ,Quality management ,medicine.diagnostic_test ,business.industry ,030209 endocrinology & metabolism ,General Medicine ,Type distribution ,Best interests ,University hospital ,medicine.disease ,Incremental growth ,Ultrasound guided ,Pathology and Forensic Medicine ,03 medical and health sciences ,0302 clinical medicine ,Fine-needle aspiration ,030220 oncology & carcinogenesis ,medicine ,business - Abstract
Introduction Although pathology services focused on fine needle aspiration (FNA) biopsy of superficial palpable masses with on-site cytological evaluation are available in a wide range of clinical and academic settings, the addition of ultrasound (US) guidance into FNA practice by a cytopathologist group can be challenging. An US-FNA service provided by a cytopathologist in the department of Pathology is a relatively new practice in the field of medicine. This report summarizes our experience and strategies in achieving this objective and our successful preliminary results. Materials and Methods The US-FNA service includes (1) an FNA procedure to be performed by a cytopathologist under US guidance; (2) onsite adequacy evaluation and diagnosis to be done by the same cytopathologist; and immediate patient consultation and sample triaging carried out by the same cytopathologist in an FNA suite within the department of Pathology. The FNA suite including a procedure room equipped with a portable US machine, an exam/procedure table, a mobile cabinet with FNA supplies, a counter with sink, and a reception room with waiting area is set-up. Results The establishment of the US-FNA service is successful. There is an incremental growth of the service over the first 8 months. Among the 114 cases performed during the first 8 months, the case type distribution is shown to be 50% thyroid nodules, 33% lymph nodes, 5.5% salivary gland masses, 3.5% breast masses, and 8% soft tissue masses. Conclusions The authors' initial 8 months experience and strategies in setting up a new US-FNA practice in a new institution are discussed to highlight obstacles encountered and approaches that promoted the successful establishment of a new service. A conservative approach, focusing on building partnerships with existing clinical services, can be successfully implemented in most institutions, if appropriate strategies are applied. The main strategy is to ensure that the best interests of patients remain the primary focus and that everything possible is done to improve the quality and effectiveness of patient care by providing the best possible diagnostic US-FNA service, to enable optimal clinical management.
- Published
- 2017
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40. On the validity of the radiographic method for determining age of ancient salmon
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Anthony Raymond Hofkamp and Virginia L. Butler
- Subjects
010506 paleontology ,Archeology ,Chinook wind ,060102 archaeology ,biology ,Ecology ,06 humanities and the arts ,Population demographics ,biology.organism_classification ,01 natural sciences ,Incremental growth ,Fishery ,Oncorhynchus ,%22">Fish ,0601 history and archaeology ,Life history ,0105 earth and related environmental sciences - Abstract
White rings visible on the centrum face of salmon vertebrae with X-rays have been used since the 1980s to age Pacific salmon (Oncorhynchus spp.), which in turn have been used to determine salmon species, season of capture and season of site occupation. This approach relies on a variety of assumptions, the most fundamental of which is that rings represent true years. Recent aDNA analysis has shown that the X-ray approach has flaws but the source of the error has been unknown. Given the value of reconstructing salmon population demographics and life history from ancient remains, establishing a valid and reliable method of ageing salmon vertebrae is extremely worthwhile. The main goal of our study was to evaluate if X-ray images of ring patterns on vertebrae provide a valid method of estimating fish age. Vertebrae from 66 adult Chinook salmon (O. tshawytscha) of known age were studied with X-rays, thin sections or low-powered (10–30 ×) magnification. We found that the white bands observed in X-rays are structural walls that do not grow annually. While X-rays are not a valid method for ageing salmonids, incremental growth seen on the surface of fish centra shows great promise for reconstructing ancient fish life history.
- Published
- 2017
- Full Text
- View/download PDF
41. Connective frequencies in child-directed texts: A corpus analysis in comparison to theorized orders of connective acquisition and to connective frequencies in adult-directed texts
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B.W.F. Penning de Vries and A.E.J.M. Tellings
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050101 languages & linguistics ,Linguistics and Language ,Corpus analysis ,05 social sciences ,Perspective (graphical) ,Learning and Plasticity ,050301 education ,Language acquisition ,Language and Linguistics ,Linguistics ,Incremental growth ,Word knowledge ,0501 psychology and cognitive sciences ,Written language ,Psychology ,0503 education - Abstract
Starting from a usage-based perspective of language acquisition, the present study investigates the occurrence of connectives in BasiLex, an 11.5 million word corpus of texts Dutch children encounter during the primary school years (grades 1–6). Specifically, we investigate how connective frequencies change across grades, how these changes reflect the theorized orders of connective acquisition in the work of Bloom et al. (1980) and Evers-Vermeul & Sanders (2009), and we make a comparison with the frequencies of connectives in the adult written language corpus Celex. Briefly summarized, our findings show that the numbers of connectives increase sharply after grade 1 and then more steadily across grades 2 to 6; we see some reflection of the connective acquisition theory of Evers-Vermeul & Sanders in the connective frequencies in texts offered to children; and we see some remarkable similarities between connective frequencies in the adult corpus Celex as compared to connective frequencies in grade 1 and grade 6 texts in BasiLex. Our findings suggest that the written input offered to children harmonizes with theoretical approaches that emphasize the incremental growth of word knowledge in children as a function of exposure.
- Published
- 2020
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42. REVISITING PLUTON EMPLACEMENT THROUGH THE LENS OF INCREMENTAL GROWTH; NEW OPPORTUNITIES FOR EVALUATING THE ENTIRE PLUTON-HOST ROCK SYSTEM IN ASYMMETRICAL INTRUSIONS
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Scott R. Paterson and Cullen L. Scheland
- Subjects
Pluton ,Petrology ,Host (network) ,Geology ,Incremental growth - Published
- 2020
- Full Text
- View/download PDF
43. Bridging the Gap From Caldera Unrest to Resurgence
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Valerio Acocella
- Subjects
Felsic ,Bridging (networking) ,010504 meteorology & atmospheric sciences ,Resurgent dome ,Pluton ,deformation ,Unrest ,010502 geochemistry & geophysics ,resurgence ,01 natural sciences ,Incremental growth ,Paleontology ,intrusion ,Magma ,caldera ,unrest ,General Earth and Planetary Sciences ,Caldera ,lcsh:Q ,lcsh:Science ,Geology ,0105 earth and related environmental sciences - Abstract
Calderas often inflate up to a few metres for weeks to years, which is evidence of short-term unrest. Some calderas also show larger uplift (up to a thousand metres), achieved over the long-term (hundreds to thousands of years), manifest by a resurgent dome or block. How the short-term inflation relates to long-term resurgence is still poorly understood, even though established views consider the two processes distinct. This study exploits the longer deformation time series now available for several calderas, as well as the better understanding of magmatic processes and their evolution, to try to bridge the gap between these two scales of uplift. Available data challenge established views, suggesting that resurgence, rather than being produced by constant or continuous uplift, is the net cumulated result of tens to thousands distinct episodes of inflation, even interrupted by deflation episodes, as observed on short-term unrest. These inflation episodes are ascribed to distinct pulses of shallow magma emplacement, with most of the magma remaining intruded, especially in felsic calderas. This supports an incremental growth of magmatic systems, consistently with that observed below resurgent calderas and what is inferred for plutons. Comparing the uplift (as expression of the intrusive record) and eruptive histories or resurgent calderas opens new exciting research paths to understand the causal relationships between intruded and erupted magma at a given caldera, thus enhancing its long-term eruptive forecast.
- Published
- 2019
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44. From the forests to teeth: Visual crossdating to refine age estimates in marine mammals
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Mark A. Hindell, Karen Evans, and Vicki Hamilton
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0106 biological sciences ,Marine mammal ,Ecology ,Age estimation ,010604 marine biology & hydrobiology ,Objective method ,Aquatic Science ,Biology ,010603 evolutionary biology ,01 natural sciences ,Ecology, Evolution, Behavior and Systematics ,Incremental growth - Abstract
Estimation of the age of individuals is a fundamental parameter for understanding the biology of individuals and ecology of populations. Incremental growth deposits in tooth dentine or cementum, known as growth layer groups (GLGs), have been used to estimate the age of toothed marine mammals (odontocetes, pinnipeds) since the 1950s (Scheffer and Myrick 1980). In most species, it is assumed that GLGs are deposited annually (Hohn 2009). Validation of this assumption has only been possible in a small number of marine mammal species (e.g., Bowen et al. 1983, Myrick et al. 1984, Hohn et al. 1989, Lockyer 1993, Oosthuizen 1997), due to impracticalities in obtaining validated ages (Evans et al. 2002, Hohn 2009). For species in which validation of age is not possible, absolute age or the accuracy of age estimates cannot be confirmed (Campana 2001). Further, the precision of estimates (i.e., the closeness of repeat counts from an individual tooth) may not necessarily reflect the best estimate of age and, at present, an objective method to assist with identification of GLGs for age estimation purposes has not been established (Evans et al. 2002, Campana and Stewart 2014).
- Published
- 2017
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45. Daily growth and tidal rhythms in Miocene and modern giant clams revealed via ultra-high resolution LA-ICPMS analysis — A novel methodological approach towards improved sclerochemistry
- Author
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Wolfgang Müller and Viola Warter
- Subjects
Laser ablation ,010504 meteorology & atmospheric sciences ,Rectangular aperture ,biology ,Thin section ,Paleontology ,Mineralogy ,010502 geochemistry & geophysics ,Oceanography ,Mass spectrometry ,Ultra high resolution ,biology.organism_classification ,01 natural sciences ,Incremental growth ,Tridacna ,Rhythm ,Ecology, Evolution, Behavior and Systematics ,Geology ,0105 earth and related environmental sciences ,Earth-Surface Processes - Abstract
We present a novel approach for ultra-high resolution laser-ablation inductively-coupled-plasma mass spectrometry (LA-ICPMS) analysis, which not only allows us to clearly resolve Tridacna (giant clam) shells. Daily element/Ca variability preserved within microscopically visible growth increments is resolved by utilizing the combined capabilities of a rotating rectangular aperture (spot size on target 4 × 50 μm), the rapid signal washout of a Laurin two-volume laser ablation cell and slow compositional profiling (≤ 1.5 μm/s). Striking co-variation between oscillating cycles in B/Ca, Mg/Ca, Sr/Ca and Ba/Ca is discernible, yet also tantalizingly, sub-daily shifts between these element/Ca ratios can be observed. In comparison to a lower-resolution, seasonally-resolved δ 18 O–Mg/Ca record (Warter et al., 2015), the ~ 10–20 μm element/Ca cycles are determined to be daily in origin, and a further ~ 14–15 day cyclicity is superimposed on the daily cycles. The latter is interpreted to reflect (Miocene) tidal periodicity. Changes in pixel intensity during thin section observation associated with micro- and macroscopically visible low and high density bands have been quantified via image processing analysis. This reveals close correspondence to the measured trace elemental cyclicity, indicating a coupling between the geochemical composition of the shell and the incremental growth pattern. A comparison between the elemental and image processing results reveals that ultra-high-resolution LA-ICPMS analysis surpasses the latter in detecting environmental rhythms, including daily and tidal cycles. Highly-resolved LA-ICPMS analysis is a viable alternative to nanoSIMS and opens up routine investigation of long-term (deep-time) paleoenvironmental records at daily resolution.
- Published
- 2017
- Full Text
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46. Postcanine microstructure inCricodon metabolus, a Middle Triassic gomphodont cynodont from south-eastern Africa
- Author
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Christophe Hendrickx, Jonah N. Choiniere, and Fernando Abdala
- Subjects
0106 biological sciences ,010506 paleontology ,Gomphodontia ,biology ,Enamel paint ,Holotype ,Paleontology ,Anatomy ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,Incremental growth ,Cynodont ,stomatognathic diseases ,Odontoblast ,stomatognathic system ,Synapsid ,visual_art ,visual_art.visual_art_medium ,Ecology, Evolution, Behavior and Systematics ,South eastern ,Geology ,0105 earth and related environmental sciences - Abstract
Cricodon metabolus is a trirachodontid cynodont from the Anisian (Middle Triassic) of eastern and southern Africa. It has labiolingually expanded (gomphodont) postcanines but also a sectorial tooth in the last postcanine locus. In this paper, we examine the crown microstructure of isolated sectorial and gomphodont postcanines belonging to the holotype specimen of this taxon using scanning electron microscopy. The enamel of both teeth is prismless and composed of discontinuous columnar divergence units, supporting the consistent presence of synapsid columnar enamel in cynognathians. Abundant tubules and numerous irregularly spaced incremental lines are also visible in the enamel and dentine layers in each tooth. This study reveals that the enamel thickness varies along the tooth row in Cricodon as the enamel layer of the gomphodont postcanines is 11.5 times thicker than that of the sectorial crown. It is likely that this difference reflects occlusal stresses and fewer replacements in gomphodont postcanines relative to sectorial teeth. Approximately 100 incremental growth lines of von Ebner are present in the dentine layer, indicating that the deposition of the dentine by odontoblasts occurred for three months before the animal's death.
- Published
- 2016
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47. Phreatomagmatic maar-diatreme volcanoes and their incremental growth: a model
- Author
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Volker Lorenz, Stefan Suhr, and Peter Suhr
- Subjects
geography ,geography.geographical_feature_category ,010504 meteorology & atmospheric sciences ,Geochemistry ,Geology ,Ocean Engineering ,010502 geochemistry & geophysics ,01 natural sciences ,Incremental growth ,Maar ,Diatreme ,Volcano ,Phreatomagmatic eruption ,0105 earth and related environmental sciences ,Water Science and Technology - Published
- 2016
- Full Text
- View/download PDF
48. Egypt's Future: Status Quo, Incremental Growth or Regional Leadership?
- Author
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Robert Mason
- Subjects
Economic growth ,Sociology and Political Science ,Status quo ,media_common.quotation_subject ,Political science ,Political Science and International Relations ,Incremental growth ,media_common - Published
- 2016
- Full Text
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49. Enamel daily secretion rates of deciduous molars from a global sample of children.
- Author
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McFarlane, Gina, Loch, Carolina, Guatelli-Steinberg, Debbie, Bayle, Priscilla, Le Luyer, Mona, Sabel, Nina, Nava, Alessia, Floyd, Bruce, Skinner, Mark, White, Sophie, Pitfield, Rosie, and Mahoney, Patrick
- Subjects
- *
MOLARS , *DENTAL enamel , *DIGITAL cameras , *SECRETION - Abstract
To investigate and describe the variation in enamel daily secretion rates (DSRs) of naturally exfoliated deciduous molars (n = 345) from five modern-day populations (Aotearoa New Zealand, Britain, Canada, France, and Sweden). Each tooth was thin sectioned and examined using a high-powered Olympus BX51 microscope and DP25 digital microscope camera. Mean DSRs were recorded for the inner, mid, and outer regions of cuspal and lateral enamel, excluding enamel nearest the enamel-dentin junction and at the outermost crown surface. Mean DSRs did not vary significantly between populations, or by sex. Cuspal enamel grew slightly faster than lateral enamel (mean difference 0.16 µm per day; p < 0.001). The trajectory of DSRs remained relatively constant from inner to outer cuspal enamel and increased slightly in lateral enamel (p = 0.003). The DSRs of deciduous molars from modern-day children are remarkably consistent when compared among populations. While growth rates are faster in cuspal than lateral enamel, the trajectory of enamel formation changes only slightly from inner to outer regions. The trajectory of DSRs for deciduous molars differs to that of permanent molar enamel, which typically display a steep increase in matrix deposition from inner to outer enamel. • Daily secretion rates (DSR) reported for deciduous molars from global sample. • Deciduous molar enamel DSRs show limited variation between populations. • Deciduous molars show minor increase in DSRs from inner to outer enamel. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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- View/download PDF
50. THE PATH FROM A BIG TANK OF MAGMA TO SLOW INCREMENTAL GROWTH OF A PLUTON
- Author
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John M. Bartley, Drew S. Coleman, and Allen F. Glazner
- Subjects
Pluton ,Path (graph theory) ,Magma ,Petrology ,Incremental growth ,Geology - Published
- 2019
- Full Text
- View/download PDF
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