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Статті в журналах з теми "Heat/cold waves"

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Morozova, Svetlana V., Viktor N. Abannikov, Elena A. Polianskaia, and Maria A. Alimpieva. "CLIMATOLOGY OF DRY AND WET HEAT AND COLD WAVES OF DIFFERENT INTENSITY." Географический вестник = Geographical bulletin, no. 4(63) (2022): 80–89. http://dx.doi.org/10.17072/2079-7877-2022-4-80-89.

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The article discusses the results of a statistical analysis of increases and decreases in the average daily air temperature, presented as waves of heat and cold. By a wave of heat (cold) we mean a change in the average daily air temperature by three degrees or more that lasted for at least two days. If a wave of heat (cold) was interrupted by one day of cooling (warming) or isothermy, such cases were considered a single wave. All waves were divided into dry and wet. A wave was considered wet if there was precipitation on at least one day during the development of this wave. We calculated the f
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Khitrykau, Maksim. "Changes in duration and intensity of waves of heat and cold on the territory of Belarus over the period from 1955 to 2021." PLOS Climate 3, no. 11 (2024): e0000426. http://dx.doi.org/10.1371/journal.pclm.0000426.

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The impact of modern climate warming on the characteristics of heat and cold waves on the territory of Belarus has been analysed. Since 1988, the number of heat waves and strong thaws has significantly increased (less than 15% of all registered heat waves and strong thaws occurred in the pre-warming period of 1955–1987), while the number of frost and summer cold waves has decreased. The average duration of frost and summer cold waves has decreased by 0.5–1.5 days, the average duration of strong thaws has increased by 1 day, while the changes in the duration of heat waves have been less signifi
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S. SHERAZ MAHDI, B. S. DHEKALE, SUBORNA ROY CHOUDHURY, MIZANUL HAQUE, and SANJEEV KUMAR GUPTA. "Magnitude, frequency, trends of heat and cold waves in recent decades and impact assessment in wheat: the case of north Bihar, India." Journal of Agrometeorology 22, no. 4 (2021): 477–87. http://dx.doi.org/10.54386/jam.v22i4.457.

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The climatological distribution of heat and cold waves of two important agro-climatic zones zone-I (North Alluvial Plain), zone-II (North East Alluvial Plain) of the middle Indo-Gangetic Basin of Bihar state of India was analyzed. We used series of daily maximum and minimum temperature data from 1969-2015 of five stations. Results reveal that zone-I and zone-II experienced 248/184 and 275/199average number of heat and cold events, respectively. The trend analysis exhibited almost similar results for both the zones. The zone-I experienced on an average 4.22 and 7.22 heat and cold wave days per
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RAMACHANDRAN, VS, ST NAGARAJ, and MB RAJEGOWDA. "A climatological study of heat and cold waves in Karnataka State." MAUSAM 39, no. 1 (1988): 71–74. http://dx.doi.org/10.54302/mausam.v39i1.3192.

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The intensity, frequency, areal extent, development, movement and decay of heat and cold waves m Karnataka State have been analysed during the period of the past two decades. It is observed that the total number of cold wave days are comparatively more than the heat wave days over the whole State. The magnitudes of severity in intensity of occurrence of heat waves are steeper as we move towards the eastern side of the State while it is reversed m the case of cold waves. The Maidan region of the State is most prone to severe heat waves while the coastal and a part of the Ghat regions are highly
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Ceccherini, Guido, Simone Russo, Iban Ameztoy, Claudia Patricia Romero, and Cesar Carmona-Moreno. "Magnitude and frequency of heat and cold waves in recent decades: the case of South America." Natural Hazards and Earth System Sciences 16, no. 3 (2016): 821–31. http://dx.doi.org/10.5194/nhess-16-821-2016.

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Abstract. In recent decades there has been an increase in magnitude and occurrence of heat waves and a decrease of cold waves, both of which may be related to the anthropogenic influence. This study describes the extreme temperature regime of heat waves and cold waves across South America over recent years (1980–2014). Temperature records come from the Global Surface Summary of the Day (GSOD), a climatological data set produced by the National Climatic Data Center that provides records of daily maximum and minimum temperatures acquired worldwide. The magnitude of heat waves and cold waves for
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Tomczyk, Arkadiusz Marek, and Ewa Bednorz. "Heat and cold waves on the southern coast of the Baltic Sea." Baltica 27, no. 1 (2014): 45–54. http://dx.doi.org/10.5200/baltica.2014.27.05.

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The objective of this study was to describe the characteristics of heat and cold waves on the southern coast of the Baltic Sea, and determine synoptic situations causing the occurrence of the waves. The analysis included six stations located on the southern coast of the Baltic Sea. In the study, an extreme warm day was defined as a day with the maximum temperature over the 95th annual percentile, while an extreme cold day as a day with the maximum temperature below the 5th annual percentile. A sequence of at least five extreme warm and cold days was considered, i.e. heat or cold waves, respect
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Plavcová, Eva, and Jan Kyselý. "Temporal Characteristics of Heat Waves and Cold Spells and Their Links to Atmospheric Circulation in EURO-CORDEX RCMs." Advances in Meteorology 2019 (January 14, 2019): 1–13. http://dx.doi.org/10.1155/2019/2178321.

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We study summer heat waves and winter cold spells and their links to atmospheric circulation in an ensemble of EURO-CORDEX RCMs in Central Europe. Results of 19 simulations were compared against observations over 1980–2005. Atmospheric circulation was represented by circulation types and supertypes derived from daily gridded mean sea level pressure. We examined observed and simulated characteristics of hot and cold days (defined using percentiles of temperature anomalies from the mean annual cycle) and heat waves and cold spells (periods of at least three hot/cold days in summer/winter). Altho
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Brennenstuhl, Heiko, Manuel Will, Elias Ries, Konstantin Mechler, Sven Garbade, and Markus Ries. "Patterns of extreme temperature-related catastrophic events in Europe including the Russian Federation: a cross-sectional analysis of the Emergency Events Database." BMJ Open 11, no. 6 (2021): e046359. http://dx.doi.org/10.1136/bmjopen-2020-046359.

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ObjectiveTo investigate reported extreme temperature-related catastrophic events and associated mortality on the European continent including the Russian Federation.DesignCross-sectional respecting Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) criteria.SettingsData source: Emergency Events Database (EM-DAT).ParticipantsSearch criteria: location—European continent including Russian Federation, time—years 1988 until 2019 (close of database 12 July 2019), catastrophic events—extreme temperatures.Primary outcome measuresNumbers of heat waves, cold waves, severe wint
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Cho, Seungyeon. "Exposure to Extreme Temperatures and Change in Dietary Patterns in Korea." Atmosphere 15, no. 12 (2024): 1477. https://doi.org/10.3390/atmos15121477.

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Climate change has led to increased volatility in extreme temperatures, which poses a significant threat to human health. One way in which extreme temperatures impact health is through changes in dietary patterns, particularly food consumption and nutrient intake. This study uses a restricted-access version of 24 h dietary recall data from the 2018–2021 Korea National Health and Nutrition Examination Survey and meteorological data to examine the effect of heat and cold waves on food consumption and nutrient intake. The results suggest that cold waves increase individuals’ intake of key nutrien
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Ceccherini, G., S. Russo, I. Ameztoy, C. P. Romero, and C. Carmona-Moreno. "Magnitude and frequency of heat and cold waves in recent decades: the case of South America." Natural Hazards and Earth System Sciences Discussions 3, no. 12 (2015): 7379–409. http://dx.doi.org/10.5194/nhessd-3-7379-2015.

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Abstract. In recent decades there has been an increase in magnitude and occurrence of heat waves and a decrease of cold waves which are possibly related to the anthropogenic influence (Solomon et al., 2007). This study describes the extreme temperature regime of heat waves and cold waves across South America over recent years (1980–2014). Temperature records come from the Global Surface Summary of the Day (GSOD), a climatological dataset produced by the National Climatic Data Center that provides records of daily maximum and minimum temperatures acquired worldwide. The magnitude of heat waves
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Дисертації з теми "Heat/cold waves"

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Allen, Michael James. "An Evaluation of Seasonality through Four Delineation Methods: A Comparison of Mortality Responses and the Relationship with Anomalous Temperature Events." Kent State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=kent1405326473.

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Firpo, Mári Ândrea Feldman, and Mári Ândrea Feldman Firpo. "Ondas de frio e de calor para o Rio Grande do Sul e sua relação com El Niño e La Niña." Universidade Federal de Pelotas, 2008. http://repositorio.ufpel.edu.br/handle/ri/2185.

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Made available in DSpace on 2014-08-20T14:25:47Z (GMT). No. of bitstreams: 1 dissertacao_mari_firpo.pdf: 1272617 bytes, checksum: f59407ea3e3a879715dca6636c682cbe (MD5) Previous issue date: 2008-02-15<br>In this paper the results of Cold and heat waves and their relationships with to El Niño and La Niña events in 13 meteorological stations in Rio Grande do Sul along the years of 1967 up to 2005 are presented. Daily frost and maximum and minimum air temperature data were used. The anomalies were obtained subtracting the average year (climatological normal to the data set) of each year w
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Fante, Karime Pechutti. "Eventos extremos de temperatura e seus impactos no conforto térmico humano : estudo de caso em Presidente Prudente, Brasil, na perspectiva da geografia do clima /." Presidente Prudente, 2019. http://hdl.handle.net/11449/191025.

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Orientador: João Lima Sant'Anna Neto<br>Resumo: Nos últimos anos as mudanças climáticas têm sido foco de diversas pesquisas de cunho científico e político principalmente após as publicações dos relatórios desenvolvidos pelo IPCC. Segundo o grupo, e fato incontestável para muitos pesquisadores, as mudanças climáticas deverão aumentar consideravelmente o número e intensidade dos eventos meteorológicos extremos. Contudo, tais repercussões não ocorrerão em todos os espaços e com intensidades equivalentes. Cada grupo de acordo com o seu poder aquisitivo, forma organizacional, processo histórico e c
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Dang, Thi Anh Thu. "Impact of ambient temperature on hospital admissions for acute myocardial infarction in central coast of Vietnam." Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/123901/1/Thi%20Anh%20Thu_Dang_Thesis.pdf.

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Globally, there is evidence that extremes in temperature linked with climate change can exacerbate underlying health conditions and lead to hospitalization and premature death. This study examined the short-term effects of ambient temperature extremes on hospital admissions due to acute myocardial infarction (AMI) in three geographically dispersed provinces along the Central Coast region of Vietnam. We found that risk of AMI admission is associated with high and low temperatures, in part due to variation in sub-regional climate. Public health preparedness and multi-level interventions in commu
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Rocklöv, Joacim. "Short-term effects of ambient temperature on daily deaths and hospital admissions." Umeå : Umeå Universitet, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-32906.

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Rocklöv, Joacim. "Short-term effects of ambient temperature on daily deaths and hospital admissions." Doctoral thesis, Umeå universitet, Yrkes- och miljömedicin, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-32906.

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Background: Incidence of death and hospitalizations have been observed to depend on short-term changes in weather and to increase with extreme temperatures. This thesis aims to strengthen the scientific knowledge on the relationship between temperature and daily deaths, but also the relationship between temperature and daily hospital admissions. Methods: We constructed time series regression models using daily counts of death and daily weather from the Stockholm area incorporating adjustment for potential confounding factors, season, and long-term time trends. From these models, we established
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Huang, Cunrui. "The health effects of temperature : current estimates, future projections, and adaptation strategies." Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/64353/1/Cunrui_Huang_Thesis.pdf.

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Climate change is expected to be one of the biggest global health threats in the 21st century. In response to changes in climate and associated extreme events, public health adaptation has become imperative. This thesis examined several key issues in this emerging research field. The thesis aimed to identify the climate-health (particularly temperature-health) relationships, then develop quantitative models that can be used to project future health impacts of climate change, and therefore help formulate adaptation strategies for dealing with climate-related health risks and reducing vulnera
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Adamopoulos, Dionysios. "Environmental determinants of arterial stiffness and wave reflection: pathophysiological mechanisms and clinical implications." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209744.

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Introduction – Objectives. The cardiovascular system is in direct and constant interaction with its environment. Exposure to various environmental parameters, such as low temperature, air pollution and tobacco smoke, has been strongly associated with serious or even fatal cardiovascular outcomes. Arterial stiffening and greater wave reflection are age-related vascular modifications that lead to an increased risk of cardiovascular events. The aim of this work was to explore the relationship between selected environmental factors and arterial elastic properties in an effort to elucidate the unde
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Mateus, Carla Patrícia Pedroso. "Ondas de calor e ondas de frio em Coimbra: impactes na mortalidade da população." Master's thesis, 2014. http://hdl.handle.net/10316/27650.

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Tese de Mestrado em Geografia Física, Ambiente e Ordenamento do Território apresentada à Faculdade de Letras da Universidade de Coimbra.<br>A temperatura do ar é dos elementos climáticos que mais condiciona as atividades humanas e os processos biológicos, ao nível do conforto e da saúde. A exposição a ondas de calor e a ondas de frio apresenta impactes na saúde e origina aumentos de mortalidade, dependendo da vulnerabilidade das populações expostas, bem como da duração, intensidade e frequência destes paroxismos térmicos. Assim, atendendo às consequências das ondas de calor e das ondas de frio
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Книги з теми "Heat/cold waves"

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Deschênes, Olivier. Extreme weather events, mortality and migration. National Bureau of Economic Research, 2007.

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Dholakia, Hem H. A tale of five cities: Heat waves, cold spells and mortality risk in urban India. Indian Institute of Management, 2014.

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Watson, Benjamin. New England's Disastrous Weather: Hurricanes, Tornadoes, Blizzards, Dark Days, Heat Waves, Cold Snaps...and the Human Stories Behind Them. Yankee Books, 1990.

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Watson, Benjamin. New England's Disastrous Weather: Hurricanes, Tornadoes, Blizzards, Dark Days, Heat Waves, Cold Snaps ...and the Human Stories Behind Them. Rodale Pr, 1992.

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When Your Heart Waxes Cold: What Will You Do. Independently Published, 2021.

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Climate Change for Health Professionals: A Pocket Book. Organización Panamericana de la Salud, 2020. http://dx.doi.org/10.37774/9789275121849.

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The effects of climate change on human health are unequivocal and can already be perceived worldwide. Phenomena such as heat waves, cold waves, floods, droughts, hurricanes, storms, and other extreme weather events can impact health both directly and indirectly, as well as trigger or exacerbate certain conditions and, consequently, put pressure on health services and their infrastructure. These include vector-borne, waterborne, and foodborne diseases—due to changes in the behavior and distribution of vectors and pathogens—and mental health disorders induced by mounting social unrest and forced
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Tibaldi, Stefano, and Franco Molteni. Atmospheric Blocking in Observation and Models. Oxford University Press, 2018. http://dx.doi.org/10.1093/acrefore/9780190228620.013.611.

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The atmospheric circulation in the mid-latitudes of both hemispheres is usually dominated by westerly winds and by planetary-scale and shorter-scale synoptic waves, moving mostly from west to east. A remarkable and frequent exception to this “usual” behavior is atmospheric blocking. Blocking occurs when the usual zonal flow is hindered by the establishment of a large-amplitude, quasi-stationary, high-pressure meridional circulation structure which “blocks” the flow of the westerlies and the progression of the atmospheric waves and disturbances embedded in them. Such blocking structures can hav
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Romagnoli, Stefano, and Giovanni Zagli. Blood pressure monitoring in the ICU. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0131.

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Two major systems are available for measuring blood pressure (BP)—the indirect cuff method and direct arterial cannulation. In critically-ill patients admitted to the intensive care unit, the invasive blood pressure is the ‘gold standard’ as a tight control of BP values, and its change over time is important for choosing therapies and drugs titration. Since artefacts due to the inappropriate dynamic responses of the fluid-filled monitoring systems may lead to clinically relevant differences between actual and displayed pressure values, before considering the BP value shown as reliable, the cri
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Farber, Daniel A. Climate Change and Disaster Law. Edited by Kevin R. Gray, Richard Tarasofsky, and Cinnamon Carlarne. Oxford University Press, 2016. http://dx.doi.org/10.1093/law/9780199684601.003.0026.

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This chapter looks into a specific dimension of adaptation to climate change—disaster risks. It reviews the prospects for increases in disaster risk due to climate change and considers arguments that governments have a duty under international law to respond to these increased risks. Climate change greatly accentuates disasters, putting even more stress on disaster response systems. The list of potential disasters is long, and includes heat waves, droughts, crop failures, wildfires, and outbreaks of illness. Besides the direct threats to human life and property, impacts on food supplies could
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Heenan, Anna. Autonomy, Care and Family Law. Hart Publishing, 2024. http://dx.doi.org/10.5040/9781509959365.

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There is a tension at the heart of family law and policy between the increasing influence of individual autonomy and the demands of caring for children. Individual autonomy envisages decisions made in one’s own best interests, whereas decisions around care are often made for the good of the family, and may conflict with the caregiver’s individual interests. Whereas individual autonomy valorises economic self-sufficiency, caregiving responsibilities constrain choice and conflict with paid work. This book explores this tension to consider how, given changing social trends, family law and policy
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Частини книг з теми "Heat/cold waves"

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Qian, Weihong. "Heat Waves and Cold Events." In Temporal Climatology and Anomalous Weather Analysis. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3641-5_7.

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Pai, D. S., A. K. Srivastava, and Smitha Anil Nair. "Heat and Cold Waves Over India." In Springer Geology. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2531-0_4.

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Nair, Smitha, Mahima, Monika Sanghwahia, and D. S. Pai. "Frequency and Magnitude of Heat and Cold Waves over India." In Social and Economic Impact of Earth Sciences. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-6929-4_9.

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Parliari, Daphne, Christos Giannaros, and Stavros Keppas. "Assessment of Heat and Cold Waves Phenomena and Impacts on Environment." In Extremes in Atmospheric Processes and Phenomenon: Assessment, Impacts and Mitigation. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7727-4_7.

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Engelbrecht, Francois A., Jessica Steinkopf, Jonathan Padavatan, and Guy F. Midgley. "Projections of Future Climate Change in Southern Africa and the Potential for Regional Tipping Points." In Sustainability of Southern African Ecosystems under Global Change. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-10948-5_7.

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AbstractSouthern Africa is a climate change hotspot with projected warming and drying trends amplifying stresses in a naturally warm, dry and water-stressed region. Despite model-projected uncertainty in rainfall change over the eastern escarpment of South Africa, strong model agreement in projections indicates that southern African is likely to become generally drier. Sharply increased regional warming and associated strong reductions in soil-moisture availability and increases in heat-waves and high fire-danger days are virtually certain under low mitigation futures. Changes are detectible i
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Taylor, Susan Jean. "Exploring the of Establishment of an Urban Forest in Phuthaditjhaba to Create a More Sustainable Future Urban Environment." In Sustainable Development Goals Series. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-15773-8_11.

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AbstractThis document review evaluates modes of appropriate urban tree planting that could quickly (within 20 years) create a tree canopy in Phuthaditjhaba to provide social benefits, deal with a future urban heat island effect and create resilience to climate change. Phuthaditjhaba (pop. 54 000), a dense rural–urban settlement in QwaQwa, South Africa, faces looming threats linked to climate change, including health impacts as heat waves become more common and severe in southern Africa. One of the ways of creating a more liveable and sustainable urban environment is through tree planting in st
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Brison, Jean-Pascal. "p-Wave Superconductivity and d-Vector Representation." In Springer Proceedings in Physics. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64623-3_6.

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AbstractSince the mid-80s, new classes of superconductors have been discovered in which the origin of superconductivity cannot be attributed to the electron–ion interactions at the heart of conventional superconductivity. Most of these unconventional superconductors are strongly correlated electron systems, and identifying (or even more difficult, predicting) the precise superconducting state has been, and sometimes remains, an actual challenge. However, in most cases, it has been demonstrated that in these materials the spin state of the Cooper pairs is a singlet state, often associated with
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Giovanardi, Matteo, Matteo Trane, and Riccardo Pollo. "Environmental Sensing and Simulation for Healthy Districts: A Comparison Between Field Measurements and CFD Model." In The Urban Book Series. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-29515-7_82.

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AbstractAtmospheric Particulate Matter (PM) is considered among the main risk factors for cardiovascular, respiratory, and carcinogenic diseases. Besides, heat waves accounted for 68% of natural hazard-related deaths in Europe between 1980 and 2017 and many climate models project a global rise in climate hazards. Environmental Monitoring (EM) is a key resource to control health determinants, addressing threats arising from unhealthy external conditions. Forecasting models may need data coming from pervasive distributed sensor networks and computational simulations. Moreover, district-scale Env
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Hastings, Mardi C., and Jeanette A. Thomas. "Fishes." In Exploring Animal Behavior Through Sound: Volume 2. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-83460-8_5.

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Abstract The term fishes is used broadly to include the eel-like, cartilaginous jawless fishes (Agnatha), the cartilaginous jawed fishes (Chondrichthyes), and the bony fishes (Osteichthyes). Among these groups, most bioacoustics research has focused on bony fishes, which generate communication sounds via the swim bladder and/or skeletal components. Fishes that have been studied in detail generally hear frequencies below 3000 Hz. The main functions of sounds emitted by fish are for intraspecific or interspecific aggression, defense of a territory or nest, attraction of a mate, and courtship. Al
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Kilbourne, Edwin M. "Cold Environments." In The Public Health Consequences of Disasters. Oxford University PressNew York, NY, 1996. http://dx.doi.org/10.1093/oso/9780195095708.003.0013.

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Abstract Unlike summer heat waves, sustained periods of unusually cold winter weather are not characteristically associated with a rise in numbers of deaths from all causes. Nevertheless, the cold causes mortality and severe morbidity of considerable public health importance. If one considers only U.S. deaths certified by physicians as being temperature-related, the average number of deaths attributed to the cold, approximately 770 yearly, is substantially higher than the average yearly number attributed to the heat, about 270 (]).
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Тези доповідей конференцій з теми "Heat/cold waves"

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Balabukh, Vira, Stepan Yagodinets, Liudmyla Malytska, Hanna Dovhal, Olena Lavrynenko, and Larysa Pysarenko. "The electronic atlas "Heat waves. Cold waves. Sudden temperature changes"." In Scientific-practical conference dedicated to World Meteorological Day "At the Frontline of Climate Action" and World Water Day "Water for a Peaceful and Sustainable Future". Ukrainian Hydrometeorological Institute of the State Emergency Service of Ukraine and the National Academy of Sciences of Ukraine, 2024. http://dx.doi.org/10.15407/conf_uhmi_cgo_2024.033.

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Науково-довідниковий атлас «Хвилі тепла. Хвилі холоду. Різкі зміни температури» призначений для просторово-часового аналізу екстремальних термічних умов атмосфери, зокрема хвиль тепла, холоду та різких міждобових зміни температури повітря в Україні. Він містить науково обгрунтовану інформацію щодо характеристик цих явищ в Україні у 1981-2020 рр, швидкості і значущості їхньої зміни протягом цього періоду та проекцій зміни середніх багаторічних значень цих характеристик у 2021-2040, 2041-2060 та 2081-2100 рр, відносно 1991-2010 рр за сценаріїв RCP4.5 та RCP8.5. Електронний атлас структурно склад
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West, Glen O., and Kent S. Udell. "Heat Transfer During Heating and Cooling of a Packed Bed Comprised of Encapsulated Phase Change Material." In ASME 2017 Heat Transfer Summer Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/ht2017-4953.

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Phase change materials (PCMs) are attractive components of thermal energy storage systems due to their high energy densities and the relatively small temperature differences needed for effective charging and discharging. In this study, experimental data were examined in order to better understand energy exchange in packed beds and porous media comprised of solid/liquid phase change capsules. Air was used as the heat transfer fluid; hot air was injected in order to drive the melting process, while cold air was injected to accomplish freezing or solidification of the PCM. Theory was developed to
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Kašpar, Marek, and Miloslav Müller. "Evaluation of the areal extremeness of extreme weather events in Czechia in the period of 1961–2020." In První konference PERUN. Český hydrometeorologický ústav, 2023. http://dx.doi.org/10.59984/978-80-7653-063-8.15.

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Due to the multiplication of impacts of weather extremes when occurring in larger area, we proposed an areal approach of their evaluation. We evaluated six types of extreme weather events, namely, heat waves, cold waves, air temperature drops, windstorms, heavy precipitation, and heavy snowfalls. We employed the original method using the Weather Extremity Index derived from return periods of values of relevant meteorological variables in the affected area. Each event is characterized not only by the areal extremeness quantified with the index but also by the spatial extent and duration. In the
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Li, Longjian, Wenzhi Cui, Qinghua Chen, Tien-Chien Jen, and Quan Liao. "The Effects of the Distance Between Nozzle and Substrate on Cold Gas Dynamic Spray Process." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72372.

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In this paper, numerical simulations were performed for the gas-particle two phase flow in the cold gas dynamic spray process to investigate the acceleration of micro- and nanoparticles with diameters ranging from 100nm to 50μm. Nitrogen (N2) and Helium (He) were chosen as the carrier gas, respectively. The acceleration of carrier gas to particles in the De-Laval-Type supersonic nozzle was strongly dependent on the characteristics of flow field, as well as the densities and the size of the particles. Two kind of particles Copper (Cu) and Platinum (Pt) were chosen as the spraying materials. The
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Fang, Jin, Hugo Frederich, and Laurent Pilon. "Harvesting Nanoscale Radiation Heat Transfer With Pyroelectric Materials." In ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/ht2009-88570.

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Pyroelectric energy conversion offers a novel, direct energy-conversion technology by transforming time-dependent temperature directly into electricity. It makes use of the pyroelectric effect to create a flow of charge to or from the surface of a material as a result of heating or cooling. However, existing pyroelectric energy converter can only operate at low frequency due to relatively low heat transfer rate between the pyroelectric materials and the working fluid subjected to oscillatory fluid flow between hot and cold sources. On the other hand, energy transfer by thermal radiation betwee
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Chen, Qiyong, Enqiang Lin, Victor K. Champagne, Aaron Nardi, and Sinan Müftü. "Impact Mechanics of Spherical Metallic Particles with Uniformly Distributed Porosity." In ITSC2019, edited by F. Azarmi, K. Balani, H. Koivuluoto, et al. ASM International, 2019. http://dx.doi.org/10.31399/asm.cp.itsc2019p0846.

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Abstract In this study, finite element models are used to simulate the impact of porous WC-Co and Al particles cold sprayed onto substrates of the same materials. Effects of high strain rate, heat generation due to plasticity, interfacial friction, heat transfer, and material damage and failure are taken into account as are differences in the initial kinetic energy and strength of the materials. It was found that the influence of porosity increases with impact velocity and that the pores channel stress waves in unique ways not observed for solid particles. The results suggest that using porous
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Moon, Justin, J. Rafael Pacheco, and Arturo Pacheco-Vega. "Heat Transfer Enhancement in Wavy Micro-Channels Through Multiharmonic Surfaces." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86425.

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In this study, three-dimensional numerical simulations are performed to investigate heat transfer enhancement in multi-harmonic micro-scale wavy channels. The focus is on the influence of channel surface-topography, modeled as multi-harmonic sinusoidal waves of square cross-sectional area, on the enhancing mechanisms. A single-wave device of 0.5 mm × 0.5 mm × 20 mm length, is used as baseline, and new designs are built with harmonic-type surfaces. The channel is enclosed by a solid block, with the bottom surface within the sinusoidal region being exposed to a 47 W/cm2 heat flux. The numerical
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Wong, Kaufui V., Andrew Paddon, and Alfredo Jimenez. "Heat Island Effect Aggravates Mortality." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62785.

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Cases of death during heat waves are most commonly due to respiratory and cardiovascular diseases, with the main contribution from the negative effect of heat on the cardiovascular system. In an attempt to control the body temperature, the body’s natural instinct is to circulate large quantities of blood to the skin. However while trying to protect itself from overheating, the body actually harms itself by inducing extra strain on the heart. This excess strain has the potential to trigger a cardiac event in those with chronic health problems, such as the elderly. Those in the U.S.A. between th
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Huang, Bo-Wun, Huang-Kuang Kung, and Jao-Hwa Kuang. "Dynamic Characteristics of a Mistuned Heat Exchanger in Cross-Flow." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34729.

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The dynamic behaviors of tubes of a heat exchanger are frequently affected by the existence of local flaw. These tubes are worn from the hot-cold fluid shock waves. This local defect may alter the tube dynamics and introduce mode localization in the periodically arranged tube array. The variation of the dynamic characteristics of a component cooling water heat exchanger with wear tubes in cross-flow is investigated in this study. Periodically coupled cooling tubes are used to approximate a heat exchanger. Each tube is considered to be coupled to adjacent tubes through the squeezed water film i
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Bekkulov, Aibek, Andrew Luthen, and Ben Xu. "Experimental Study of Condensation in Different 3D Printed Regenerators in a Thermoacoustic Cooler." In ASME 2019 13th International Conference on Energy Sustainability collocated with the ASME 2019 Heat Transfer Summer Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/es2019-3937.

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Abstract Thermoacoustics (TA) deals with the conversion of heat into sound and vice versa. The device that transfers energy from a low temperature reservoir to a high temperature one by utilizing acoustic work is called TA cooler (TAC). The main components of a typical TA device are a resonator, a regenerator (stack of parallel plates) and two heat exchangers. The thermoacoustic phenomenon takes place in the stack when a nonzero temperature gradient imposed along the regenerator (i.e. parallel to the direction of the sound wave propagation) interacts with the sound wave oscillations. The low t
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Звіти організацій з теми "Heat/cold waves"

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Notman, Greg, Josh Coles-Riley, and Helen Tilley. How could Wales heat and build low-carbon homes by 2035? Wales Centre for Public Policy, 2024. http://dx.doi.org/10.54454/24041001.

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Notman, Greg, Josh Coles-Riley, and Helen Tilley. How could Wales heat and build low-carbon homes by 2035? Wales Centre for Public Policy, 2024. http://dx.doi.org/10.54454/24041002.

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Notman, Greg, Josh Coles-Riley, and Helen Tilley. How could Wales heat and build low-carbon homes by 2035? Wales Centre for Public Policy, 2024. http://dx.doi.org/10.54454/24041003.

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Notman, Greg, Josh Coles-Riley, and Helen Tilley. How could Wales heat and build low-carbon homes by 2035? Wales Centre for Public Policy, 2024. http://dx.doi.org/10.54454/24041004.

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Li, Peng, Na jia, Bing Liu, and Qing He. Effect of cardiac shock wave therapy on adverse cardiovascular event for patients with coronary artery disease: an updated systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2022. http://dx.doi.org/10.37766/inplasy2022.1.0103.

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Review question / Objective: We have previously demonstrated that cardiac shock wave therapy (CSWT) effectively improves myocardial perfusion in patients with coronary artery disease (CAD). In this study, we want to address whether CSWT could decrease the risk of adverse cardiovascular events in CAD patients unsuitable for revascularization. Eligibility criteria: Trials are considered eligible if they meet these criteria: (1) patients included are diagnosed as refractory angina or ischemic heart failure; (2) the study i a randomized controlled trial (RCT) or a prospective cohort study; (3) int
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Wideman, Jr., Robert F., Nicholas B. Anthony, Avigdor Cahaner, Alan Shlosberg, Michel Bellaiche, and William B. Roush. Integrated Approach to Evaluating Inherited Predictors of Resistance to Pulmonary Hypertension Syndrome (Ascites) in Fast Growing Broiler Chickens. United States Department of Agriculture, 2000. http://dx.doi.org/10.32747/2000.7575287.bard.

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Background PHS (pulmonary hypertension syndrome, ascites syndrome) is a serious cause of loss in the broiler industry, and is a prime example of an undesirable side effect of successful genetic development that may be deleteriously manifested by factors in the environment of growing broilers. Basically, continuous and pinpointed selection for rapid growth in broilers has led to higher oxygen demand and consequently to more frequent manifestation of an inherent potential cardiopulmonary incapability to sufficiently oxygenate the arterial blood. The multifaceted causes and modifiers of PHS make
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Orbeta, Aniceto Jr, Anna Rita Vargas, and Aubrey Tabuga. Learning from Labor Market Outcome Changes Overtime: A Study of a Panel of 4Ps Beneficiaries. Philippine Institute for Development Studies, 2023. http://dx.doi.org/10.62986/dp2023.41.

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This study analyzes the dynamic labor market outcomes of 4Ps beneficiaries, utilizing panel data from three waves of a Randomized Controlled Trial (RCT) cohort (2011, 2013, and 2017). Employing the categorization of Tabuga et al. (2021), labor market states were classified into stable, improving, worsening, and chronic categories. The study focused on four key labor market outcomes: work status, permanent work, full-time employment based on work hours, and full-time employment based on the desire for additional work. Ordered logistic regression was used to identify the correlates of these outc
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Mäkelä, Antti, Tapio Tourula, Heikki Tuomenvirta, et al. Climate change impacts to the security of supply. Finnish Meteorological Institute, 2023. http://dx.doi.org/10.35614/isbn.9789523361645.

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Serious disruptions and exceptional circumstances for society, that the society tries to prepare for and act in them are at the center of security of supply. Current examples are the COVID pandemic and the ongoing energy crisis for which Finland's security of supply has also been strongly highlighted. Disturbances can also be caused by weather phenomena: in Finland, such examples are windstorms, severe thunderstorms, floods, and droughts, which can, at least in principle, paralyze the society. It is possible to prepare for the impacts of weather phenomena, but the ongoing rapid climate change
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O'Connell, Kelly, David Burdick, Melissa Vaccarino, Colin Lock, Greg Zimmerman, and Yakuta Bhagat. Coral species inventory at War in the Pacific National Historical Park: Final report. National Park Service, 2024. http://dx.doi.org/10.36967/2302040.

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The War in the Pacific National Historical Park (WAPA), a protected area managed by the National Park Service (NPS), was established "to commemorate the bravery and sacrifice of those participating in the campaigns of the Pacific Theater of World War II and to conserve and interpret outstanding natural, scenic, and historic values on the island of Guam." Coral reef systems present in the park represent a vital element of Guam?s cultural, traditional, and economical heritage, and as such, are precious and in need of conservation. To facilitate the management of these resources, NPS determined t
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