Academic literature on the topic 'Lake Region (Vic )'
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Journal articles on the topic "Lake Region (Vic )"
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Mishra, Vimal, Keith A. Cherkauer, and Laura C. Bowling. "Parameterization of Lakes and Wetlands for Energy and Water Balance Studies in the Great Lakes Region*." Journal of Hydrometeorology 11, no. 5 (October 1, 2010): 1057–82. http://dx.doi.org/10.1175/2010jhm1207.1.
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Abstract Lakes and wetlands are prevalent around the Great Lakes and play an important role in the regional water and energy cycle. However, simulating their impacts on regional-scale hydrology is still a major challenge and not widely attempted. In the present study, the Variable Infiltration Capacity (VIC) model is applied and evaluated with a physically based lake and wetland algorithm, which can simulate the effect of lakes and wetlands on the grid cell energy and water balance. The VIC model was calibrated at 10 U.S. Geological Survey (USGS) stream gauging stations against daily streamflow records for the period of 1985–95, and successfully evaluated for the period of 1996–2005. Single-grid sensitivity experiments showed that runoff, baseflow, and inundation area were sensitive to the lake model parameters. Simulations were also conducted to analyze the spatial and temporal variability of inundation area for the period of 1985–2005. Results indicated that water and energy fluxes were substantially affected when lakes and wetlands were included in model simulations. Domain-averaged annual mean evapotranspiration (ET) was increased by 5% while annual mean total runoff was decreased by 12% with lakes and wetlands. Latent heat flux increased while sensible heat flux decreased because of the inclusion of lakes and wetlands.
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Amantai, Nigenare, and Jianli Ding. "Analysis on the Spatio-Temporal Changes of LST and Its Influencing Factors Based on VIC Model in the Arid Region from 1960 to 2017: An Example of the Ebinur Lake Watershed, Xinjiang, China." Remote Sensing 13, no. 23 (November 30, 2021): 4867. http://dx.doi.org/10.3390/rs13234867.
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LST (Land surface temperature) is an important indicator for monitoring dynamic changes in the earth’s resources and environment. However, the complexity of obtaining long-term, continuous LST data hinders the development of research on LST responses to meteorological factors or LUCC in areas where data is lacking. The objective of this research was to use the VIC-3L (Variable Infiltration Capacity) based on multi-source remote sensing data to simulate and explore spatio-temporal changes in the LST, to analyze the relationship between the LST and meteorological elements by using cross-wavelet transform (XWT) and wavelet coherence (WTC), the relationship between the LST and LUCC by using three-phase remote sensing images of LUCC. The following results were obtained. The annual average LST of the study area is increasing at a rate of 0.027 °C per year. The annual average LST level is relatively high in the central and eastern regions. The average temperature has an important influence on LST, which is mainly reflected in the period scale of 1~4a in 1963–1972, 1980–1996, and 2004–2010. The sharp decline in open shrubs may have exacerbated the increase in LST in the study area. This study provides a scientific reference for studying LST in arid areas.
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Perales, K. Martin, Catherine L. Hein, Noah R. Lottig, and M. Jake Vander Zanden. "Lake water level response to drought in a lake-rich region explained by lake and landscape characteristics." Canadian Journal of Fisheries and Aquatic Sciences 77, no. 11 (November 2020): 1836–45. http://dx.doi.org/10.1139/cjfas-2019-0270.
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Climate change is altering hydrologic regimes, with implications for lake water levels. While lakes within lake districts experience the same climate, lakes may exhibit differential climate vulnerability regarding water level response to drought. We took advantage of a recent drought (∼2005–2010) and estimated changes in lake area, water level, and shoreline position on 47 lakes in northern Wisconsin using high-resolution orthoimagery and hypsographic curves. We developed a model predicting water level response to drought to identify characteristics of the most vulnerable lakes in the region, which indicated that low-conductivity seepage lakes found high in the landscape, with little surrounding wetland and highly permeable soils, showed the greatest water level declines. To explore potential changes in the littoral zone, we estimated coarse woody habitat (CWH) loss during the drought and found that drainage lakes lost 0.8% CWH while seepage lakes were disproportionately impacted, with a mean loss of 40% CWH. Characterizing how lakes and lake districts respond to drought will further our understanding of how climate change may alter lake ecology via water level fluctuations.
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Wagner, B., H. Vogel, G. Zanchetta, and R. Sulpizio. "Environmental change within the Balkan region during the past ca. 50 ka recorded in the sediments from lakes Prespa and Ohrid." Biogeosciences 7, no. 10 (October 19, 2010): 3187–98. http://dx.doi.org/10.5194/bg-7-3187-2010.
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Abstract. Lakes Prespa and Ohrid, in the Balkan region, are considered to be amongst the oldest lakes in Europe. Both lakes are hydraulically connected via karst aquifers. From Lake Ohrid, several sediment cores up to 15 m long have been studied over the last few years. Here, we document the first long sediment record from nearby Lake Prespa to clarify the influence of Lake Prespa on Lake Ohrid and the environmental history of the region. Radiocarbon dating and dated tephra layers provide robust age control and indicate that the 10.5 m long sediment record from Lake Prespa reaches back to 48 ka. Glacial sedimentation is characterized by low organic matter content and absence of carbonates in the sediments, which indicate oligotrophic conditions in both lakes. Holocene sedimentation is characterized by particularly high carbonate content in Lake Ohrid and by particularly high organic matter content in Lake Prespa, which indicates a shift towards more mesotrophic conditions in the latter. Long-term environmental change and short-term events, such as related to the Heinrich events during the Pleistocene or the 8.2 ka cooling event during the Holocene, are well recorded in both lakes, but are only evident in certain proxies. The comparison of the sediment cores from both lakes indicates that environmental change affects particularly the trophic state of Lake Prespa due to its lower volume and water depth.
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Benjamin, Stanley G., Tatiana G. Smirnova, Eric P. James, Eric J. Anderson, Ayumi Fujisaki-Manome, John G. W. Kelley, Greg E. Mann, Andrew D. Gronewold, Philip Chu, and Sean G. T. Kelley. "Inland lake temperature initialization via coupled cycling with atmospheric data assimilation." Geoscientific Model Development 15, no. 17 (September 5, 2022): 6659–76. http://dx.doi.org/10.5194/gmd-15-6659-2022.
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Abstract. Application of lake models coupled within earth-system prediction models, especially for predictions from days to weeks, requires accurate initialization of lake temperatures. Commonly used methods to initialize lake temperatures include interpolation of global sea-surface temperature (SST) analyses to inland lakes, daily satellite-based observations, or model-based reanalyses. However, each of these methods have limitations in capturing the temporal characteristics of lake temperatures (e.g., effects of anomalously warm or cold weather) for all lakes within a geographic region and/or during extended cloudy periods. An alternative lake-initialization method was developed which uses two-way-coupled cycling of a small-lake model within an hourly data assimilation system of a weather prediction model. The lake model simulated lake temperatures were compared with other estimates from satellite and in situ observations and interpolated-SST data for a multi-month period in 2021. The lake cycling initialization, now applied to two operational US NOAA weather models, was found to decrease errors in lake surface temperature from as much as 5–10 K vs. interpolated-SST data to about 1–2 K compared to available in situ and satellite observations.
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Sato, Yota, Koji Fujita, Hiroshi Inoue, and Akiko Sakai. "Land- to lake-terminating transition triggers dynamic thinning of a Bhutanese glacier." Cryosphere 16, no. 6 (July 1, 2022): 2643–54. http://dx.doi.org/10.5194/tc-16-2643-2022.
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Abstract. There have been rapid increases in both the number and expansion of the proglacial lakes across High Mountain Asia. However, the relationship between proglacial lakes and glacier dynamics remains unclear in the Himalayan region. Here we present the surface elevation, flow-velocity changes, and proglacial lake expansion of Thorthormi and Lugge glaciers in the Lunana region, Bhutanese Himalaya, during the 2000–2018 period using photogrammetry and GPS survey data. The lake expansion and surface lowering rates and flow-velocity field of Lugge Glacier, a lake-terminating glacier, have remained approximately constant since 2000. Conversely, there have been accelerated proglacial lake expansion and a 2-fold increase in the thinning rate of Thorthormi Glacier since 2011, as well as a considerable speed-up in the flow-velocity field (>150 m a−1). We reveal that the lake formation and transition of Thorthormi Glacier from a land- to lake-terminating glacier have triggered glacier speed-up and rapid thinning via a positive (compressive) to negative (extensional) change in the emergence velocities. This study provides the first evidence of dynamic glacier changes that are associated with proglacial lake formation across the Himalayan region.
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Wagner, B., H. Vogel, G. Zanchetta, and R. Sulpizio. "Environmental changes on the Balkans recorded in the sediments from lakes Prespa and Ohrid." Biogeosciences Discussions 7, no. 3 (May 10, 2010): 3365–92. http://dx.doi.org/10.5194/bgd-7-3365-2010.
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Abstract. Lakes Prespa and Ohrid on the Balkans are considered to be amongst the oldest lakes in Europe. Both lakes are hydraulically connected via karst aquifers. From Lake Ohrid, several up to ca. 15 m long sediment records were studied during the past years. In this study, a first long sediment record from Lake Prespa was studied in order to shed more light on the influence of Lake Prespa on Lake Ohrid and the environmental history of the region. Radiocarbon dating and the occurrence of 3 dated tephra layers provide a good age control and indicate that the 10.5 m long sediment record reaches back to 48 ka. The comparison of the results from this study with those from former studies of the Lake Ohrid cores indicates that Lake Prespa is more susceptible to environmental changes due to its lower volume and water depth. Glacial sedimentation is characterized by low organic matter contents and absence of carbonates in the sediments, which indicate oligotrophic conditions in both lakes. Holocene sedimentation is characterized by particularly high carbonate contents in Lake Ohrid and by particularly high organic matter contents in Lake Prespa, which indicate a shift towards more mesotrophic conditions in the latter. Long-term environmental changes and short-term events, such as the Heinrich events during the Pleistocene or the 8.2 cooling event during the Holocene, are well recorded in both lakes, but partly expressed in different proxies.
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Rick, Brianna, Daniel McGrath, William Armstrong, and Scott W. McCoy. "Dam type and lake location characterize ice-marginal lake area change in Alaska and NW Canada between 1984 and 2019." Cryosphere 16, no. 1 (January 25, 2022): 297–314. http://dx.doi.org/10.5194/tc-16-297-2022.
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Abstract. Ice-marginal lakes impact glacier mass balance, water resources, and ecosystem dynamics and can produce catastrophic glacial lake outburst floods (GLOFs) via sudden drainage. Multitemporal inventories of ice-marginal lakes are a critical first step in understanding the drivers of historic change, predicting future lake evolution, and assessing GLOF hazards. Here, we use Landsat-era satellite imagery and supervised classification to semi-automatically delineate lake outlines for four ∼5-year time periods between 1984 and 2019 in Alaska and northwest Canada. Overall, ice-marginal lakes in the region have grown in total number (+183 lakes, 38 % increase) and area (+483 km2, 59 % increase) between the time periods of 1984–1988 and 2016–2019. However, changes in lake numbers and area were notably unsteady and nonuniform. We demonstrate that lake area changes are connected to dam type (moraine, bedrock, ice, or supraglacial) and topological position (proglacial, detached, unconnected, ice, or supraglacial), with important differences in lake behavior between the sub-groups. In strong contrast to all other dam types, ice-dammed lakes decreased in number (six fewer, 9 % decrease) and area (−51 km2, 40 % decrease), while moraine-dammed lakes increased (56 more, 26 % and +479 km2, 87 % increase for number and area, respectively) at a faster rate than the average when considering all dam types together. Proglacial lakes experienced the largest area changes and rate of change out of any lake position throughout the period of study and moraine-dammed lakes which experienced the largest increases are associated with clean-ice glaciers (<19 % debris cover). By tracking individual lakes through time and categorizing lakes by dam type, subregion, and topological position, we are able to parse trends that would otherwise be aliased if these characteristics were not considered. This work highlights the importance of such lake characterization when performing ice-marginal lake inventories and provides insight into the physical processes driving recent ice-marginal lake evolution.
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Rempel, L. L., and D. G. Smith. "Postglacial fish dispersal from the Mississippi refuge to the Mackenzie River basin." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 4 (April 1, 1998): 893–99. http://dx.doi.org/10.1139/f97-257.
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Wisconsinan glaciation had a profound impact on fish faunas in North America, and deglaciation led to the dispersal of approximately 28 species from the Mississippi glacial refuge into the Mackenzie River basin. A hypothesized dispersal 11 500 years ago via glacial lakes Agassiz and Peace is difficult to verify and hydrologic linkage between these lakes was sporadic and short lived. Geomorphic evidence indicates that glacial Lake Agassiz drained into the Mackenzie basin via the Clearwater River, Saskatchewan, 9900 years ago and created a second opportunity for fish dispersal northward. Fish distribution data indicate a 96% similarity between Mississippi species in the Mackenzie basin and species occupying the former Agassiz-Clearwater corridor. Fifteen species dispersed into the headwaters of the Clearwater River during hydrologic linkage to Lake Agassiz and are now isolated above an 18.5 m waterfall. Previous genetic data suggest lake trout (Salvelinus namaycush) used the Agassiz-Clearwater corridor for two-way dispersal between Beringia and the Great Lakes basin. Lake whitefish (Coregonus clupeaformis) populations of Mississippi origin are distinguished by a marker allele of glucose-3-phosphate dehydrogenase, G3PDH-1*b, that is absent from modern populations within the former Lake Peace region and the distribution of Mississippi whitefish across Canada is best resolved by our Agassiz-Clearwater dispersal hypothesis. Our research substantially alters the interpretation of fish biogeographic patterns in Canada and generates testable hypotheses for future studies.
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Maurer, J. M., J. M. Schaefer, J. B. Russell, S. Rupper, N. Wangdi, A. E. Putnam, and N. Young. "Seismic observations, numerical modeling, and geomorphic analysis of a glacier lake outburst flood in the Himalayas." Science Advances 6, no. 38 (September 2020): eaba3645. http://dx.doi.org/10.1126/sciadv.aba3645.
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Glacial lake outburst floods (GLOFs) are a substantial hazard for downstream communities in vulnerable regions, yet unpredictable triggers and remote source locations make GLOF dynamics difficult to measure and quantify. Here, we revisit a destructive GLOF that occurred in Bhutan in 1994 and apply cross-correlation–based seismic analyses to track the evolution of the GLOF remotely (~100 kilometers from the source region). We use the seismic observations along with eyewitness reports and a downstream gauge station to constrain a numerical flood model and then assess geomorphic change and current state of the unstable lakes via satellite imagery. Coherent seismic energy is evident from 1 to 5 hertz beginning approximately 5 hours before the flood impacted Punakha village, which originated at the source lake and advanced down the valley during the GLOF duration. Our analysis highlights potential benefits of using real-time seismic monitoring to improve early warning systems.
Dissertations / Theses on the topic "Lake Region (Vic )"
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Irons, Christopher D. "Community dynamics in catchment health : an investigation into whole of catchment management based on research in the Lake Corangamite Basin, Western Victoria." Master's thesis, 1998. http://hdl.handle.net/1885/144416.
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Carman-Brown, Kylie. "Following the water: environmental history and the hydrological cycle in colonial Gippsland, Australia, 1838-1900." Phd thesis, 2011. http://hdl.handle.net/1885/151792.
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This thesis explores a new approach to writing the environmental history of settler societies through an explicit focus on ecological processes, as distinct from the more commonly used landscape or geographic units. In this case, I focus upon the hydrological cycle and four key processes that constitute it. The processes are precipitation; flow above and below ground in rivers, creeks and aquifers; stored or still water in lakes, ponds and wetlands; and evaporation.
The work examines the impact of the ecological processes that make up the hydrological cycle within the context of the daily life of colonial settlers in the catchment of the Gippsland Lakes in south eastern Victoria, Australia, from the commencement of white colonization in the late 1830s up to the turn of the century. This time period was selected because by 1900, the principal changes which laid the foundation for the Lakes seriously compromised ecological health in the late 1980s and early 1990s were all in place.
Inspired by gestalt psychology, it examines the interaction of those processes with settler knowledge of biophysical processes, their religious and cultural beliefs, economic and political forces at work in their world, work and leisure time, their language and expressions, values and aspirations for themselves and their families. Each of these aspects informed their perceptions of the ecology around them, and particularly, their perception of the significance of water. The findings confirms the critical importance of cultural values, generated through myth, story and action, to understanding environmental changes. Colonial Gippslanders were committed to: a belief in progress, or alternately, banishing wilderness; a belief that the world was made by God for human benefit; and the desire for certainty versus the actual uncertainty in hydrological conditions.
Collectively, colonial Gippslanders believed in progress as much as they believed in God, believed themselves largely separate from nature and plumped for certainty. They set to re-plumbing the catchment to eliminate, as far as possible within their technical capabilities, the natural variations within the hydrological cycle. The tools which they applied to achieve this radical re{u00AD}plumbing included the application of engineering knowledge, supported by increasing amounts of technology and machinery and by sophisticated socio{u00AD}political lobbying.
Books on the topic "Lake Region (Vic )"
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The Seventy [sic] International Symposium of Van Lake Region: October 04th-07th 2011, Bitlis = VII. Uluslararası Van Gölü Havzası Sempozyumu : 04-07 Ekim 2011, Bitlis. Bitlis: Eren Üniversitesi, 2013.
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Olaf, Hanson, ed. Northern rover: The life story of Olaf Hanson. Edmonton: AU Press, 2008.
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Gippsland Lakes strategy. [Melbourne]: State Government of Victoria, Dept. of Planning and Urban Growth [and] Dept. of Conservation and Environment, 1990.
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Doerfler, Jill, and Erik Redix. The Great Lakes. Edited by Frederick E. Hoxie. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199858897.013.9.
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The experience of Native people in the Great Lakes region is crucial to understanding the larger history of American Indians. The region was (and remains) a microcosm of the experiences of Native peoples in North America. Most major issues in American Indian history either originated in the Great Lakes or have had a corresponding impact, including removal, military conflict, allotment, termination, challenges of urban life, Indian activism, treaty rights, and economic development via gaming. This chapter reviews those events and topics while exploring the central and critical role that relationships have played in the lives and experiences of Native people in the Great Lakes.
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Kailuweit, Rolf, and Vanessa Tölke, eds. TangoMedia. Rombach Wissenschaft, 2020. http://dx.doi.org/10.5771/9783968216478.
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Initially conceived as a form of music and dance with vulgar connotations, tango emerged in the large cities located in the River Plate region in Argentina and Uruguay in the late 19th century. Brought to the public’s attention via early forms of the media (records, the radio and film), tango established itself in Europe before finding a mass audience in the region in which it originated from the 1930s to the 1950s. Tango’s revival in Europe in the 1980s also reignited its popularity in the River Plate region. Tango is a media product that pervades all social strata and transcends both regional and national borders. It’s not only the music and the dance itself that have turned tango into a pop-cultural phenomenon, but its music’s lyrics, the visual imagery it creates and its specific character. This book examines tango’s historical, social and media dimensions in 13 contributions.
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Triumph VII: Northern Region - Harrisburg to the Lakes, Wilkes-Barre, Oil City, and Red Bank 1827-2004 (Triumph, 7). Barnard-Roberts, 2004.
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Kim, Diana S. Empires of Vice. Princeton University Press, 2020. http://dx.doi.org/10.23943/princeton/9780691172408.001.0001.
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During the late nineteenth century, opium was integral to European colonial rule in Southeast Asia. The taxation of opium was a major source of revenue for British and French colonizers, who also derived moral authority from imposing a tax on a peculiar vice of their non-European subjects. Yet between the 1890s and the 1940s, colonial states began to ban opium, upsetting the very foundations of overseas rule—how did this happen? This book traces the history of this dramatic reversal, revealing the colonial legacies that set the stage for the region's drug problems today. The book challenges the conventional wisdom about opium prohibition—that it came about because doctors awoke to the dangers of drug addiction or that it was a response to moral crusaders—uncovering a more complex story deep within the colonial bureaucracy. The book shows how prohibition was made possible by the pivotal contributions of seemingly weak bureaucratic officials. Comparing British and French experiences across today's Burma, Cambodia, Laos, Malaysia, Singapore, and Vietnam, the book examines how the everyday work of local administrators delegitimized the taxing of opium, which in turn made major anti-opium reforms possible. The book reveals the inner life of colonial bureaucracy, illuminating how European rulers reconfigured their opium-entangled foundations of governance and shaped Southeast Asia's political economy of illicit drugs and the punitive state.
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Horne, Cynthia M. Lustration, Public Disclosures, and Social Trust. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198793328.003.0007.
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This chapter examines the conditions under which lustration and truth commissions affected social trust, separately considering trust in social institutions and interpersonal trust. This chapter shows that measures to improve social trust might have unintended, negative consequences. More compulsory lustration programs were associated with less trust in unions and the church at both the individual and aggregate levels. There is some evidence to support the contentions of critics that lustration might adversely affect social institutions via blowback from truth telling and public disclosures about previous regime complicity. With respect to interpersonal trust, while late file access procedures and personal disclosures could affect interpersonal trust in the future, the lustration of public office holders has not undermined interpersonal trust as feared. The findings from this chapter reconfirmed the theoretical argument specified in Chapter 1 regarding the expected differential impact of lustration measures on particularized and generalized social trust.
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Ginty's Ghost: A Wilderness Dweller's Dream. Harbour Publishing Company, Limited, 2012.
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Lake, Peter. The Paradoxes of ‘Popularity’ in Shakespeare’s History Plays. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198806899.003.0002.
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This chapter surveys the development of sixteenth-century popularity politics, noting Burghley, Essex, and Bancroft all to have been practitioners of that ‘dark art’. It shows that popularity was a term of opprobrium and distaste to the elite, yet was taken up with equal enthusiasm by Puritanism and Roman Catholic enemies of the Elizabethan regime, contributing to a fitful emergence of the public sphere. Deploying English history in support of their claims, religious partisanship focused certain late medieval reigns: those of Richard II, Henry IV, Henry V, Henry VI, and Richard III—the very reigns that Shakespeare then addressed in his history plays. Shakespeare’s dramas are shown to present the complexities and risks attendant upon popularity politics; and to demonstrate, further, the resistance of popular attitudes to conscription by elites, given the independent intelligence of commoners and their capability for large-scale news gathering.
Book chapters on the topic "Lake Region (Vic )"
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Hechler, Ryan Scott. "Over the Andes and through Their Goods." In The Archaeology of the Upper Amazon, 208–27. University Press of Florida, 2021. http://dx.doi.org/10.5744/florida/9780813066905.003.0011.
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While highland Peru’s Late Intermediate Period (AD ~1000–1476) is characterized by community isolation, regional violence, and shrinking exchange networks, the contemporary northern Ecuadorian Late Integration Period (~AD 950–1500) was a time of large-scale interregional activity that saw the flourishing of market economies. The northern Ecuadorian Andes demonstrated highly diverse cultural practices amongst an intimately connected Barbacoan world that stretched from the highlands of northern Ecuador and southwestern Colombia to the Amazon and the Pacific coast. Late Integration Period groups such as the Quijos, Caras, Yumbos, and Pastos were intimately connected via political affiliation, economic exchange, and linguistic similarity – relations that were built and sustained in highly varied environments. This region proved the most difficult to subdue during the late Inca conquest of the region. The Incas’ imperial attempts to segregate the subjugated highland Caras from surrounding groups via constructing the highest concentration of fortifications in the pre-Columbian Andes proved insufficient to quell ties with unconquered ceja de selva communities, particularly the Quijos who maintained complex interregional relations during Inca and early Spanish colonialism.
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"Narrative Documents - Group VII: Operations in the Lake Erie Region, 1813." In Select British Documents of the Canadian War of 1812 (volume II), 243–356. Toronto: Champlain Society, 2013. http://dx.doi.org/10.3138/9781442618138_6.
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Ruch, Cathleen Brandi. "Rebirth of a Program via Community, Industry, and Philanthropic Support." In Environmental and Agricultural Informatics, 298–315. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-5225-9621-9.ch013.
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In 2002, Lake Region State College closed their “Agricultural Farm Business Management” program, due to low enrollment and lack of interest. However considering that agriculture is one of the leading economic developers in North Dakota, Lake Region State College (LRSC) leaders and the community felt this might have been a premature closing, and decided to look at other agriculture workforce initiatives, considering ways to revitalize the agriculture workforce and its needs. This was an ambitious goal considering how rural LRSC is, with roughly 2000 in student matriculation in a given year. Before looking at reinventing, or “rebirthing” the ag program, challenges and steps needed to be addressed and employed. The following chapter will provide a case study on how LRSC leaders, its community, and the alignment of philanthropic support was able to revitalize or “rebirth” the agriculture program to the new cutting edge of Precision Agriculture.
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Ruch, Cathleen Brandi. "Rebirth of a Program via Community, Industry, and Philanthropic Support." In Facilitating Higher Education Growth through Fundraising and Philanthropy, 144–66. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9664-8.ch006.
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In 2002, Lake Region State College closed their “Agricultural Farm Business Management” program, due to low enrollment and lack of interest. However considering that agriculture is one of the leading economic developers in North Dakota, Lake Region State College (LRSC) leaders and the community felt this might have been a premature closing, and decided to look at other agriculture workforce initiatives, considering ways to revitalize the agriculture workforce and its needs. This was an ambitious goal considering how rural LRSC is, with roughly 2000 in student matriculation in a given year. Before looking at reinventing, or “rebirthing” the ag program, challenges and steps needed to be addressed and employed. The following chapter will provide a case study on how LRSC leaders, its community, and the alignment of philanthropic support was able to revitalize or “rebirth” the agriculture program to the new cutting edge of Precision Agriculture.
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Finkenbine, Roy E. "The Underground Railroad in “Indian Country”." In Fugitive Slaves and Spaces of Freedom in North America, 70–92. University Press of Florida, 2018. http://dx.doi.org/10.5744/florida/9780813056036.003.0004.
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From the establishment of the Greenville Treaty Line in 1795 to Wyandot removal in 1843, northwest Ohio constituted a “land apart” from the waves of white settlement that overwhelmed the eastern part of the Old Northwest. Native Americans—primarily Shawnee, Ottawa, and Wyandot—constituted the dominant population there, in what was often referred to as “Indian Country.” This region lay astride the primary northbound routes traversed by fugitive slaves from Kentucky, western Virginia, and beyond, heading to Canada via the Detroit River borderland or the western half of Lake Erie, and freedom seekers were frequently assisted by Native Americans. This chapter explores two regions in particular. One is the stretch of Ottawa villages along the Maumee River, where runaways were welcomed and protected, then taken to Fort Malden, Upper Canada, each year when Ottawa warriors went to receive their annual payment of goods for fighting on the British side during the War of 1812. The other is the Wyandot Grand Reserve at Upper Sandusky, which sponsored a maroon village of fugitive slaves called Negro Town for four decades. These two case studies serve as a point of departure for arguing that “Indian Country” was a unique space of freedom.
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Thiery, Peter. "Democratic Transitions in the Late Twentieth Century." In The Handbook of Political, Social, and Economic Transformation, 334–47. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198829911.003.0031.
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This chapter provides an overview of the latest democratization thrust, which had already ebbed away by the mid-2000s, and which Samuel Huntington describes as the ‘third wave’ of democratization. This wave began in the 1970s in Southern Europe (Portugal, Greece, Spain) and spread via Latin America to Asia, Eastern Europe, and Africa; only the Arab world remained largely resistant to democratization efforts until the ‘Arab Spring’. The different (and changing) global and international environments, different currents, the course, and the results of this wave of democratization at both global and regional levels are examined. Finally, the explanatory approaches and the relevant factors of these democratization processes are briefly outlined.
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"Fish Habitat: Essential Fish Habitat and Rehabilitation." In Fish Habitat: Essential Fish Habitat and Rehabilitation, edited by John H. Hartig and John R. M. Kelso. American Fisheries Society, 1999. http://dx.doi.org/10.47886/9781888569124.ch24.
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<em>Abstract.</em> —The Canada-U.S. Great Lakes Water Quality Agreement (GLWQA) is an evolving instrument for ecosystem-based management. Its initial emphasis in 1972 was on controlling phosphorus inputs. In 1978, the GLWQA focused on control and management of persistent toxic substances and the use of an ecosystem approach in management and research. The 1987 Protocol to the GLWQA adopted new annexes mat focused on sources and pathways of persistent toxic substances and on development and implementation of comprehensive management plans to restore beneficial uses, including fish and wildlife habitat. Canada and the United States have achieved a number of Great Lakes successes. Examples of successes include: reversing cultural eutrophication in the lower Great Lakes and maintaining the oligotrophic-mesotrophic state of the upper Great Lakes as a result of phosphorus control programs, and achieving US$2-4 billion in economic return to the Great Lakes region annually as a result of fish stocking, restrictions on harvests, and sea lamprey control. As such successes have been achieved and cooperative management efforts have evolved to address ecosystem integrity and sustainability, the relative importance of habitat as a Great Lakes issue has increased. Current major challenges to further ecosystem-based management of habitat include: ensuring that all levels of government adopt strong habitat conservation and rehabilitation policy statements; recruiting and retaining trained habitat personnel to ensure that local and regional actions are consistent with such policies; sustaining creative ecosystem-based processes in light of government cutbacks; addressing the need for fish habitat assessment and analysis via effective institutional arrangements; agreeing on a core set of indicators and allocating required resources to sustain monitoring programs; and exchanging information about successful experiences with modifying habitat to support fish stocks and communicating broadly both ecological and economic benefits.
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"Fish Habitat: Essential Fish Habitat and Rehabilitation." In Fish Habitat: Essential Fish Habitat and Rehabilitation, edited by John H. Hartig and John R. M. Kelso. American Fisheries Society, 1999. http://dx.doi.org/10.47886/9781888569124.ch24.
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<em>Abstract.</em> —The Canada-U.S. Great Lakes Water Quality Agreement (GLWQA) is an evolving instrument for ecosystem-based management. Its initial emphasis in 1972 was on controlling phosphorus inputs. In 1978, the GLWQA focused on control and management of persistent toxic substances and the use of an ecosystem approach in management and research. The 1987 Protocol to the GLWQA adopted new annexes mat focused on sources and pathways of persistent toxic substances and on development and implementation of comprehensive management plans to restore beneficial uses, including fish and wildlife habitat. Canada and the United States have achieved a number of Great Lakes successes. Examples of successes include: reversing cultural eutrophication in the lower Great Lakes and maintaining the oligotrophic-mesotrophic state of the upper Great Lakes as a result of phosphorus control programs, and achieving US$2-4 billion in economic return to the Great Lakes region annually as a result of fish stocking, restrictions on harvests, and sea lamprey control. As such successes have been achieved and cooperative management efforts have evolved to address ecosystem integrity and sustainability, the relative importance of habitat as a Great Lakes issue has increased. Current major challenges to further ecosystem-based management of habitat include: ensuring that all levels of government adopt strong habitat conservation and rehabilitation policy statements; recruiting and retaining trained habitat personnel to ensure that local and regional actions are consistent with such policies; sustaining creative ecosystem-based processes in light of government cutbacks; addressing the need for fish habitat assessment and analysis via effective institutional arrangements; agreeing on a core set of indicators and allocating required resources to sustain monitoring programs; and exchanging information about successful experiences with modifying habitat to support fish stocks and communicating broadly both ecological and economic benefits.
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Questier, Michael. "The Coming of Toleration in Late Elizabethan England?" In Catholics and Treason, 259–87. Oxford University Press, 2022. http://dx.doi.org/10.1093/oso/9780192847027.003.0009.
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The stalemate in the fighting in France and Flanders, together with the exhaustion of the military capacity of the French and Spanish monarchies, made some sort of peace a virtual certainty. This would be the context for the accession in England of the Scots king, James VI. He would not, like Henry of Navarre, convert to Rome, but it was likely, some thought, that his rule would see a change in the relationship between Catholics and the (new) regime. There had been a rehabilitation of formerly rebel Catholics in Scotland. This coincided with the so-called Archpriest Dispute in England. This controversy was conducted via manuscripts and printed pamphlets and was technically about an issue of ecclesiastical jurisdiction. But it dealt also with some of the major contested political issues of the moment, including whether the regime was persecuting good (Catholic) Christians. It was a debate conducted in part through the regime’s continuing resort to the law of treason and the resulting dumbshow of the scaffold, which this chapter reviews. These confrontations were, in turn, part of the public politics of the increasingly imminent accession. Towards the end of the 1590s there were, here and there, visible signs that the authorities were not (if they ever had been) united over the way that the law should be enforced against Catholic separatism.
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Girsztowt, Aleksandra, and Piotr Kołodziejczak. "The Participation of Craftsmen in Municipal Governance in Late Medieval Marienburg and Stockholm." In Towns on the Edge in Medieval Europe, 120–41. British Academy, 2022. http://dx.doi.org/10.5871/bacad/9780197267301.003.0006.
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This chapter compares relations between governing group of wealthy merchants, and the craftsmen-led commons, in late medieval Marienburg (Malbork), Prussia, and Stockholm, Sweden. Each Baltic-region town was a seat of government, namely of the Grand Master of the Teutonic Order and of the Swedish king. They were ‘middle-sized towns’, with c.3,000 and c.5,000–8,000 inhabitants, respectively, in which craftsmen were, for a long time, denied participation in the town council and municipal self-government. The relationship between merchant governing group and craftsmen in Marienburg and Stockholm did not become violent, as in larger Baltic cities (e.g. Lübeck and Danzig). Nonetheless, craftsmen sought municipal power. In Marienburg, craftsmen’s representatives signed some official documents and participated in municipal decision-making, preceding the establishment of a ‘Third Order’ the 16th century. In Stockholm, commoners’ representation via a ‘large council’ was established in the late 15th century, before wealthy craftsmen became councillors from the 16th century.
Conference papers on the topic "Lake Region (Vic )"
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Leary, Robert D., and Sean Brennan. "Region of Attraction for a Vehicle Pose Estimator Utilizing Monocular Vision and Lane Marker Maps." In ASME 2016 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/dscc2016-9701.
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Currently, there is a lack of low-cost, real-time solutions for accurate autonomous vehicle localization. The fusion of a precise a priori map and a forward-facing camera can provide an alternative low-cost method for achieving centimeter-level localization. This paper analyzes the position and orientation bounds, or region of attraction, with which a real-time vehicle pose estimator can localize using monocular vision and a lane marker map. A pose estimation algorithm minimizes the residual pixel-level error between the estimated and detected lane marker features via Gauss-Newton nonlinear least-squares. Simulations of typical road scenes were used as ground truth to ensure the pose estimator will converge to the true vehicle pose. A successful convergence was defined as a pose estimate that fell within 5 cm and 0.25 degrees of the true vehicle pose. The results show that the longitudinal vehicle state is weakly observable with the smallest region of attraction. Estimating the remaining five vehicle states gives repeatable convergence within the prescribed convergence bounds over a relatively large region of attraction, even for the simple lane detection methods used herein. A main contribution of this paper is to demonstrate a repeatable and verifiable method to assess and compare lane-based vehicle localization strategies.
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Herrera, Stiw, Weber Ribeiro, Thiago Teixeira, André Carneiro, Frederico Cabral, Márcio Borges, and Carla Osthoff. "Avaliação de Desempenho no Supercomputador SDumont de uma Estratégia de Decomposição de Domínio usando as Funcionalidades de Mapeamento Topológico do MPI para um Método Numérico de Escoamento de Fluidos." In VI Escola Regional de Alto Desempenho do Rio de Janeiro. Sociedade Brasileira de Computação - SBC, 2020. http://dx.doi.org/10.5753/eradrj.2020.14513.
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Oil and gas simulations need new high-performance computing techniques to deal with the large amount of data allocation and the high computational cost that we obtain from the numerical method. The domain decomposition technique (domain division technique) was applied to a three-dimensional oil reservoir, where the MPI (Message Passing Interface) allowed the creation of a uni, bi and three-dimensional topology, where a subdivision of a reservoir could be solved in each MPI process created. A performance study was developed with these domain decomposition strategies in 20 computational nodes of the SDumont Supercomputer, using a Cascade Lake architecture.
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Chegoonian, Amir M., Peter R. Leavitt, Kiana Zolfaghari, John-Mark Davies, Helen M. Baulch, and Claude R. Duguay. "Regional Upscaling of Chlorophyll-A Retrieval from Small Eutrophic Lakes Via Sentinel-2." In IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2022. http://dx.doi.org/10.1109/igarss46834.2022.9883793.
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Lim, Jia Rou, Mohd Izzat Mohd Thiyahuddin, and Muhammad Arif Iskandar Ghazali. "New Approach to D&A Late Life Planning and Preparation: Era of Innovative Solutions." In SPE Symposium: Decommissioning and Abandonment. SPE, 2021. http://dx.doi.org/10.2118/208479-ms.
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Abstract New approach to Decommissioning and Abandonment (D&A) during late life planning and preparation is essential to the Operators to make D&A a more affordable and sustainable aspect of the Oil & Gas (O&G) business. D&A of offshore structures is a necessary requirement in the life cycle of hydrocarbon production. Removal of the structural components of an offshore platform, including the topside and jacket, represents up to 20% of the total decommissioning cost. This includes removal and transportation of the platform structure, substructures and other materials for further remediation, e.g., disposal at onshore via scrapping, repurpose, reefing, etc. The objectives of this paper include reviewing the current methods and efforts in Malaysia to remove and transport end-of-life structures and to propose innovative solutions to optimize the structural removal cost in decommissioning. The proposed recommendations consist of two categories; firstly, this research suggests improvements from the current available technologies and investigates more effective expenditure options on methods of structural removal. Secondly, this actionable insight explores novel solutions of maximising in-situ solutions. Few recommendations are proposed to be implemented in the platform decommissioning strategy. There is a huge Potential Value Creation (PVC) of adopting these recommendations as an attempt to reduce high cost of structural removal in decommissioning. This paper presents an overall review of the current capabilities and available technologies in the region. Decommissioning in Southeast Asia (SEA) presents a unique challenge and opportunity compared to other parts of the world. Decommissioning capabilities in SEA possess a huge growth potential to match the maturity, in terms of experience and portfolio, of the D&A players in other regions such as Gulf of Mexico (GOM) and North Sea. This will improve as increasingly number of decommissioning projects will be completed by PETRONAS in the future. In addition, the distinct and rich marine ecosystems present great opportunities for various in-situ solutions to be maximized for the benefits beyond oil & gas applications.
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Wheeler, Andrew P. S., Richard D. Sandberg, Neil D. Sandham, Richard Pichler, Vittorio Michelassi, and Greg Laskowski. "Direct Numerical Simulations of a High Pressure Turbine Vane." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-43133.
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In this paper we establish a benchmark data set of a generic high-pressure turbine vane generated by direct numerical simulation (DNS) to resolve fully the flow. The test conditions for this case are a Reynolds number of 0.57 million and an exit Mach number of 0.9, which is representative of a modern transonic high-pressure turbine vane. In this study we first compare the simulation results with previously published experimental data. We then investigate how turbulence affects the surface flow physics and heat transfer. An analysis of the development of loss through the vane passage is also performed. The results indicate that free-stream turbulence tends to induce streaks within the near wall flow, which augment the surface heat transfer. Turbulent breakdown is observed over the late suction surface, and this occurs via the growth of two-dimensional Kelvin-Helmholtz spanwise roll-ups, which then develop into lambda vortices creating large local peaks in the surface heat transfer. Turbulent dissipation is found to significantly increase losses within the trailing-edge region of the vane.
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Medina, Jasmine Shivani, Iomi Dhanielle Medina, and Gao Zhang. "Experimental Analysis of the Effects of Varying Temperature and Viscosities on Foamy Oil Production." In SPE Trinidad and Tobago Section Energy Resources Conference. SPE, 2021. http://dx.doi.org/10.2118/200919-ms.
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Abstract The phenomenon of higher than expected production rates and recovery factors in heavy oil reservoirs captured the term "foamy oil," by researchers. This is mainly due to the bubble filled chocolate mousse appearance found at wellheads where this phenomenon occurs. Foamy oil flow is barely understood up to this day. Understanding why this unusual occurrence exists can aid in the transfer of principles to low recovery heavy oil reservoirs globally. This study focused mainly on how varying the viscosity and temperature via pressure depletion lab tests affected the performance of foamy oil production. Six different lab-scaled experiments were conducted, four with varying temperatures and two with varying viscosities. All experiments were conducted using lab-scaled sand pack pressure depletion tests with the same initial gas oil ratio (GOR). The first series of experiments with varying temperatures showed that the oil recovery was inversely proportional to elevated temperatures, however there was a directly proportional relationship between gas recovery and elevation in temperature. A unique observation was also made, during late-stage production, foamy oil recovery reappeared with temperatures in the 45-55°C range. With respect to the viscosities, a non-linear relationship existed, however there was an optimal region in which the live-oil viscosity and foamy oil production seem to be harmonious.
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Hunicz, Jacek, and Maciej Mikulski. "Application of Variable Valve Actuation Strategies and Direct Gasoline Injection Schemes to Reduce Combustion Harshness and Emissions of Boosted HCCI Engine." In ASME 2018 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icef2018-9625.
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One of the pending issues regarding Homogeneous Charge Compression Ignition (HCCI) engines is high load operation limit constrained by excessive pressure rise rates (PRRs). The present study investigates various measures to reduce combustion harness in a residual-affected HCCI engine. At the same time, the impact of those measures on efficiency and emissions is assessed. Experimental research was performed on a single cylinder engine equipped with a fully-flexible valvetrain mechanism and direct gasoline injection. The HCCI combustion mode with exhaust gas trapping was realized using negative valve overlap and fuel reforming, achieved via the injection of a portion of fuel during exhaust re-compression. Three measures are investigated for the PRR control under the same reference operating conditions, namely: (i) variable intake and exhaust valve timing, (ii) boost pressure adjustment and (iii) split fuel injection to control the amount of fuel injected for reforming. Variable exhaust valve timing enabled control of the amount of trapped residuals, and thus of the compression temperature. The reduction in the amount of trapped residuals, at elevated engine load, delays auto-ignition, which results in a simultaneous reduction of pressure rise rates and nitrogen oxides emissions. The effects of intake valve timing are much more complex, because they include the variability in the amount of intake air, the thermodynamic compression ratio as well as the in-cylinder fluid flow. It was found, however, that both early and late intake valve openings delay auto-ignition and prolong combustion. Additionally, the reduction of the amount of fuel injected during exhaust re-compression further delays combustion and reduces combustion rates. Intake pressure reduction has by far the largest effect on peak pressure reduction yet is connected with excessive NOx emissions. The research successfully identifies air-path and injection techniques, which allow for the control of combustion rates and emissions under elevated load regime, thus shorting the gap towards the real-world application of HCCI concepts.
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Meda, Shashwath, Mike Stevens, Erwin Boer, Catherine Boyle, Greg Book, Nicolas Ward, and Godfrey Pearlson. "Brain-behavior relationships of simulated naturalistic automobile driving under the influence of acute cannabis intoxication: A double-blind, placebo-controlled study." In 2022 Annual Scientific Meeting of the Research Society on Marijuana. Research Society on Marijuana, 2022. http://dx.doi.org/10.26828/cannabis.2022.02.000.32.
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Background: Driving is a complex everyday activity that requires the use and integration of different cognitive and psychomotor functions, many of which are known to be affected when under the influence of cannabis (CNB). Given legal implications of drugged-driving and rapidly increasing use of CNB nationwide, there is an urgent need to better understand the effects of CNB on such functions in the context of driving. This longitudinal, double-blind placebo-controlled study investigated the effects of CNB on driving brain-behavior relationships in a controlled simulated environment using functional MRI (fMRI). Methods: N=26 frequent cannabis users were administered 0.5 grams of 13% THC or placebo flower cannabis via a Stortz+Bickel ‘Volcano’ vaporizer using paced inhalation, on separate days at least 1 week apart. On each study day, participants drove a virtual driving simulator (steering wheel, brake, gas pedal) inside an MRI scanner approximately 40 minutes post-dosing. Each fMRI driving session presented a naturalistic simulated environment that unobtrusively engaged drivers with scenarios that tested specific driving skills and response. There were three, approximately 10 min epochs where drivers engaged in task of lane keeping/weaving (LK), lead car following (CF), and safe overtaking (OT). fMRI data were prepared for analyses using the Human Connectome Project pipeline, then subjected to group independent component analysis (ICA) to isolate 50 spatially independent networks. 40 ICA networks were deemed valid and non-noisy. Network regions in these components were identified using 387 parcel locations, incorporating a cortical parcellation atlas (Glasser et al 2016) and detailed subcortical labels. A placebo minus high difference connectivity map was generated for each subject. A similar placebo minus high behavioral score was generated for each subject and then subjected to a principal component analysis (PCA) to reduce it to 8 orthogonal behavioral factors. Of the 8 driving behavior factors, two represented CF events (F1 and F5), three LK (F3, F4, and F8), and three OT (F2, F6, and F7). Driving behavior factors were evaluated for linear association with connectivity maps via FSL’s randomize (p<0.01 FWE-corrected significance). Results:Across all components examined, we found connectivity differences between placebo v high THC within right motion-sensitive visual cortex (parcel FST) (visual) and right superior temporal gyrus (social cognition) to positively correlate with LK driving performance. The strongest brain-behavior relationships were found for OT-related behavioral factors. Connectivity in left dorsolateral parcel a9-46v (cognitive flexibility) and right motor cortex parcel 3b (somatosensory) correlated negatively with F6 (OT). A left superior frontal parcel (higher order cognition/working memory) correlated negatively with F7 (OT) and finally R inferior frontal gyrus (response inhibition and reward deduction) correlated positively with F7 (OT). Conclusion: Our preliminary analyses yield a complex yet informative picture of key brain areas sensitive to acute CNB exposure on different driving behaviors using a simulated environment, further underscoring the impact of substance use on driving as a potential public safety issue.
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Araújo, Mariely Leonardo, Leticia Souza Pereira, and Amanda Moraes de Sá. "PERFIL DE RESIDENTES UNI E MULTIPROFISSIONAIS DA SES-GO." In I Congresso Brasileiro de Saúde Pública On-line: Uma abordagem Multiprofissional. Revista Multidisciplinar em Saúde, 2021. http://dx.doi.org/10.51161/rems/2949.
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Introdução: Em Goiânia, a Secretaria Estadual de Saúde (SES-GO) oferece Programas de Residência Multiprofissional e Uniprofissional, como especialização no: Centro Estadual de Reabilitação e Readaptação Dr. Henrique Santillo (CRER), Hospital Estadual Geral de Goiânia Dr. Alberto Rassi (HGG), Hospital Estadual de Doenças Tropicais Dr. Anuar Auad (HDT), Hospital Estadual de Urgências de Goiânia Dr. Valdemiro Cruz (HUGO), Hospital Estadual de Urgências da Região Noroeste de Goiânia Governador Otávio Lage de Siqueira (HUGOL) e Hospital Estadual Materno-Infantil Dr. Jurandir do Nascimento (HMI). Objetivos: Caracterizar os residentes do programa multiprofissional e uniprofissional da SES-GO. Métodos: Estudo transversal, descritivo, realizado através dos Formulários Google com residentes uni e multiprofissionais da SES-GO, entre março a maio de 2021 via e-mail e Whatsapp. O profissional poderia realizar o questionário após aceitação do Termo de Consentimento Livre e Esclarecido (TCLE). Foram incluídos Residentes matriculados ao Programa de Residência multiprofissional e uniprofissional da SES-GO, que estiveram cursando qualquer ano de residência (R1, R2 e R3). Os critérios de exclusão foram: Residentes que recusaram a participar da pesquisa; que estiveram de licença, com matrícula trancada ou afastados; respostas com preenchimento incompleto do formulário sociodemográfico; residentes do Programa de Residência Médica da SES-GO. Para caracterização da população foi utilizado um formulário de avaliação sociodemográfica. A análise estatística descritiva foi realizada no programa estatístico Statistical Package for the Social Sciences - SPSS (versão 20.0). Foi calculada a porcentagem e frequência para as variáveis qualitativas. O estudo foi aprovado pelo Comitê de Ética em Pesquisa HUGO/SES, parecer nº. 4.532.414. Resultados: A população foi composta por 126 participantes (92,6% da população total), sendo 87,3% do sexo feminino; 76,2% com idade entre 23 a 27 anos; 49,2% autodeclaram da cor branca; 84,9% são solteiros; 36,5% nasceram em Goiânia; 85,7% eram da modalidade multiprofissional; 56,3% referiram alteração no estado de saúde, sendo os mais prevalentes: ansiedade (53,1%), covid-19 (18,6%) e depressão (11,5%). Conclusões: Os residentes multi e uniprofissionais da SES-GO são majoritariamente mulheres, entre 23 a 27 anos, solteiros, autodeclarados da cor branca, naturais de Goiânia. A maioria é multiprofissional e refere problemas de saúde durante o programa, sendo ansiedade, covid-19 e depressão mais prevalentes.
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Grabowski, F. E. "RHEOLOGY AND PRIMARY HEMOSTASIS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643986.
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Overview The adhesion-aggregation of platelets to a site of vessel wall injury is a quintessential blood flow phenomenon. Firstly, platelets are driven to the vicinity of the vessel wall by a form of convective diffusion in which red cells both mechanically augment the effective platelet diffusivity (Turitto et al., Ind. Eng. Chem. Fund. 11:216-223, 1972; Grabowski et al., Ind. Eng. Chem. Fund. 11:224-232, 1972) and enhance the near-wall piatelet concentration (Ti11es and Eckstein, Microvasc Res., In press, 1987). Secondly, red cells subjected to physiologic shear forces are capable of secreting sufficient adenine nucleotides to induce primary platelet aggregation without themselves undergoing frank lysis (Reimers et al, Blood 64:1200-1206, 1984). This "humoral" effect of erythrocytes is likely to contribute to primary hemostasis in a shear stress-dependent manner. Thirdly, endothelial cells are able to modulate platelet aggregation at a site of vessel injury by producing prostacyclin (and perhaps other antithrombotic substances) in a manner which increases with vessel shear rate (Grabowski et al, Blood 62:301a, 1983); production for a large range of arterial shear rates appears to be limited by plasma-borne substrate (arachidonate). This manner of production ensures a concentration of prostacyclin in the near-wall region which remains relatively independent of shear rate.Imaging primary hemostasis. In our work, epi-fluorescence videomicroscopy has allowed real time imaging of platelet adhesion-aggregation to a simulated vessel wall injury. The injury model is an endothelial cell monolayer (ECM) across which, prior to ECM exposure to flowing blood, a 6-0 sterile suture is drawn in a direction transverse to flow. Microinjuries result which measure 70 ± 15μm (Mean ± SD) in width. The fluorescent label is the TAB murine monoclonal antibody (courtesy of Dr. R.P. McEver) directed against human platelet GPIIB, together with a fluorescein-conjugated goat F(ab')2 against murine inmunoglobulin. The injured ECM's, grown to confluence on rectangular cover glasses precoated with microfibrillar collagen, comprise one wall of a flow chamber mounted on a vertical microscope stage. On microinjury sites and at shear rates of 100 to 700 sec-1, computer-enhanced video images show adherence, remodelling and growth of chains of platelet aggregates. Aligned with the flow direction, these chains have a spacing of approximately 30)im, a length similar to the average endothelial cell diameter. One may speculate that such chains provide a scaffold for wound healing insofar as they are likely rich in agents chemotactic for leukocytes and in platelet-derived growth factor.Modulatory role of endothelium. When the ECM's are pre treated with 1.0 mM FC lysine acetyl sal icy late (LA), aggregate length increases (P<0.001) up totwo-fold, outflow levels by RIA of serum thromboxane B2 increase (8 of 8 paired runs), and outflow levels of prostacyclin by RIA for 6-Keto PGFiot decrease (5 of 7 paired runs). The Table gives data for one of four similar experiments at 270 sec-1 and following five minutes of flow. These data imply that products of ECM which are inhibitable by aspirin modulate local adhesion-aggregation; their inhibition, as by vasculitis or drugs, may give rise to thrombotic states.Bleeding disorders. Aggregate length is reduced in von Willebrand's disease (4 patients), Hermansky-Pudlak syndrome (2 patients), and after 300 mg oral aspirin (Tablet 4 donors). The reduction in the first two, however, is greater (P<0.01) than that for oral aspirin. With oral aspirin, further, there is a paradoxic increase in the percent platelet coverage of the injury area. Summary. Rheology has profound effects on the rate, structure, and modulation of primary hemostasis. Many of these effects can be studied via real-time, epi-fluorescence videomicroscopy of platelet adhesion-aggregation to a site of injury to an endothelial cell monolayer exposed to flowing blood. The model described has application to the study of thrombotic and hemostatic disorders and unstable angina.
Reports on the topic "Lake Region (Vic )"
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Bourdeau, J. E., M. W. McCurdy, S. J A Day, and R. G. Garrett. Regional lake sediment geochemical data from north-central Saskatchewan (NTS 074-A, B, G, and H): reanalysis data and QA/QC evaluation. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/329204.
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This report presents the geochemical data, quality assurance and quality control (QA/QC) results of the re-analysis of lake sediment samples collected from north-central Saskatchewan (NTS 074-A, B, G and H). The original lake survey was conducted in 1986 and the re-analysis in 2021. Original survey results are presented in OF1359. A total of 1,290 lake sediment samples were re-analyzed, covering an area of 17,000 km2, averaging a density of 1 sample per 13 km2. Samples were measured for 65 elements via modified aqua-regia - ICP-MS and 35 elements via INA analysis. To ensure high quality data, the geochemical data was evaluated for contamination, accuracy, precision and fitness-for-purpose. QA/QC results have identified a number of elements to be monitored carefully for future analyses. Overall, the data are of good quality.
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Harris, L. B., P. Adiban, and E. Gloaguen. The role of enigmatic deep crustal and upper mantle structures on Au and magmatic Ni-Cu-PGE-Cr mineralization in the Superior Province. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328984.
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Aeromagnetic and ground gravity data for the Canadian Superior Province, filtered to extract long wavelength components and converted to pseudo-gravity, highlight deep, N-S trending regional-scale, rectilinear faults and margins to discrete, competent mafic or felsic granulite blocks (i.e. at high angles to most regional mapped structures and sub-province boundaries) with little to no surface expression that are spatially associated with lode ('orogenic') Au and Ni-Cu-PGE-Cr occurrences. Statistical and machine learning analysis of the Red Lake-Stormy Lake region in the W Superior Province confirms visual inspection for a greater correlation between Au deposits and these deep N-S structures than with mapped surface to upper crustal, generally E-W trending, faults and shear zones. Porphyry Au, Ni, Mo and U-Th showings are also located above these deep transverse faults. Several well defined concentric circular to elliptical structures identified in the Oxford Stull and Island Lake domains along the S boundary of the N Superior proto-craton, intersected by N- to NNW striking extensional fractures and/or faults that transect the W Superior Province, again with little to no direct surface or upper crustal expression, are spatially associated with magmatic Ni-Cu-PGE-Cr and related mineralization and Au occurrences. The McFaulds Lake greenstone belt, aka. 'Ring of Fire', constitutes only a small, crescent-shaped belt within one of these concentric features above which 2736-2733 Ma mafic-ultramafic intrusions bodies were intruded. The Big Trout Lake igneous complex that hosts Cr-Pt-Pd-Rh mineralization west of the Ring of Fire lies within a smaller concentrically ringed feature at depth and, near the Ontario-Manitoba border, the Lingman Lake Au deposit, numerous Au occurrences and minor Ni showings, are similarly located on concentric structures. Preliminary magnetotelluric (MT) interpretations suggest that these concentric structures appear to also have an expression in the subcontinental lithospheric mantle (SCLM) and that lithospheric mantle resistivity features trend N-S as well as E-W. With diameters between ca. 90 km to 185 km, elliptical structures are similar in size and internal geometry to coronae on Venus which geomorphological, radar, and gravity interpretations suggest formed above mantle upwellings. Emplacement of mafic-ultramafic bodies hosting Ni-Cr-PGE mineralization along these ringlike structures at their intersection with coeval deep transverse, ca. N-S faults (viz. phi structures), along with their location along the margin to the N Superior proto-craton, are consistent with secondary mantle upwellings portrayed in numerical models of a mantle plume beneath a craton with a deep lithospheric keel within a regional N-S compressional regime. Early, regional ca. N-S faults in the W Superior were reactivated as dilatational antithetic (secondary Riedel/R') sinistral shears during dextral transpression and as extensional fractures and/or normal faults during N-S shortening. The Kapuskasing structural zone or uplift likely represents Proterozoic reactivation of a similar deep transverse structure. Preservation of discrete faults in the deep crust beneath zones of distributed Neoarchean dextral transcurrent to transpressional shear zones in the present-day upper crust suggests a 'millefeuille' lithospheric strength profile, with competent SCLM, mid- to deep, and upper crustal layers. Mechanically strong deep crustal felsic and mafic granulite layers are attributed to dehydration and melt extraction. Intra-crustal decoupling along a ductile décollement in the W Superior led to the preservation of early-formed deep structures that acted as conduits for magma transport into the overlying crust and focussed hydrothermal fluid flow during regional deformation. Increase in the thickness of semi-brittle layers in the lower crust during regional metamorphism would result in an increase in fracturing and faulting in the lower crust, facilitating hydrothermal and carbonic fluid flow in pathways linking SCLM to the upper crust, a factor explaining the late timing for most orogenic Au. Results provide an important new dataset for regional prospectively mapping, especially with machine learning, and exploration targeting for Au and Ni-Cr-Cu-PGE mineralization. Results also furnish evidence for parautochthonous development of the S Superior Province during plume-related rifting and cannot be explained by conventional subduction and arc-accretion models.
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Bourdeau, J. E., S. J. A. Day, and S E Zhang. Regional lake sediment geochemical data from northeastern Saskatchewan (NTS 064-E, 074-A and H): re-analysis data and QA/QC evaluation. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329875.
Full textAbstract:
This report presents the geochemical data, quality assurance and quality control (QA/QC) results of the re-analysis of lake sediment samples collected from northeastern Saskatchewan (NTS 064-E, 074-A and H). The original lake survey was conducted in 1984 and the re-analysis in 2021. Original survey results are presented in OF 1643. A total of 1,179 lake sediment samples were re-analyzed, covering an area of 18,000 km2, averaging a density of 1 sample per 13 km2. Samples were measured for 65 elements via modified aqua-regia - ICP-MS. To ensure high quality data, the geochemical data was evaluated for contamination, accuracy, precision and fitness-for-purpose. QA/QC results have identified a number of elements to be monitored carefully for future analyses. Overall, the data is of good quality.