Relevant bibliographies by topics / Rising temperatures

Academic literature on the topic 'Rising temperatures'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Rising temperatures"

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Frazier, Camille. "Rising Temperatures." Anthropology News 58, no. 4 (July 2017): e385-e388. http://dx.doi.org/10.1111/an.521.

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Pascual, Mercedes, and Menno J. Bouma. "Do rising temperatures matter." Ecology 90, no. 4 (April 2009): 906–12. http://dx.doi.org/10.1890/08-0730.1.

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Gaffen, Dian J. "Falling satellites, rising temperatures?" Nature 394, no. 6694 (August 1998): 615–16. http://dx.doi.org/10.1038/29163.

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Fischetti, Mark. "Rising Temperatures Hit Species Hotspots." Scientific American 311, no. 2 (July 15, 2014): 84. http://dx.doi.org/10.1038/scientificamerican0814-84.

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Holland, G. J. "Hurricanes and rising global temperatures." Proceedings of the National Academy of Sciences 109, no. 48 (November 15, 2012): 19513–14. http://dx.doi.org/10.1073/pnas.1216735109.

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Minor, Kelton, Andreas Bjerre-Nielsen, Sigga Svala Jonasdottir, Sune Lehmann, and Nick Obradovich. "Rising temperatures erode human sleep globally." One Earth 5, no. 5 (May 2022): 534–49. http://dx.doi.org/10.1016/j.oneear.2022.04.008.

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Asseng, S., F. Ewert, P. Martre, R. P. Rötter, D. B. Lobell, D. Cammarano, B. A. Kimball, et al. "Rising temperatures reduce global wheat production." Nature Climate Change 5, no. 2 (December 22, 2014): 143–47. http://dx.doi.org/10.1038/nclimate2470.

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Pearce, Fred. "Rising temperatures bring their own CO2." New Scientist 197, no. 2648 (March 2008): 11. http://dx.doi.org/10.1016/s0262-4079(08)60701-0.

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Whyte, Chelsea. "Suicide increase linked to rising temperatures." New Scientist 239, no. 3188 (July 2018): 7. http://dx.doi.org/10.1016/s0262-4079(18)31328-9.

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Ma, Dong Min, Ya Bing Lin, and Wei Ma. "Temperature-Rising Desorption of CBM." Advanced Materials Research 524-527 (May 2012): 364–70. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.364.

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In order to study the effects of CBM temperature-rising desorption, the isothermal adsorption /desorption experiments on three coal-ranks （anthracite，coking coal and lignite）at different temperatures were designed based on the traditional CBM decompression desorption. The experimental results show that temperature-rising desorption is more effective in high-rank coal and raising the temperature of high-rank coal reservoir can reduce the negative effect of Coal Matrix Shrinkage in the process of production and improve the permeability of coal reservoir. It is also revealed that the technique of temperature-rising desorption used in higher-rank coal reservoir can enhance CBM recovery ratio. This study has provided theoretical support for the application of temperature-rising desorption technique to practical diacharging and mining projects and can effectively solve gas production “bottleneck” problem.
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Dissertations / Theses on the topic "Rising temperatures"

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Thundiyil, Karen A. 1976. "Rising temperatures and expanding megacities : improving air quality in Mexico City through Urban Heat Island mitigation." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29946.

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Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 2003.
Includes bibliographical references (leaves 57-60).
Mexico City exists as a city space pushed and pulled in multiple directions. Different scales and levels of spatial reference and planning have come together to produce a dynamic and contradictory place united by the identity of Mexico City. Unfortunately, the city faces a regional environmental dilemma stemming from its chronic air pollution problem. Many steps have been taken to reduce air pollution in the city and this study examines an additional air quality improvement strategy that has been implemented in other megacities. Singapore and Tokyo have supplemented their air pollution reduction programs with Urban Heat Island (UHI) mitigation plans. Across the globe, cities experience a phenomenon called the UHI effect where urban areas are several degrees warmer than neighboring suburban or rural areas. A cycle of consuming more energy for cooling purposes adds to greenhouse gas production from the additional power generation and then feeds back to the system with yet higher temperatures in the city. In addition, higher ambient temperatures help speed the formation of smog. This study examines what Tokyo and Singapore have done in terms of an UHI mitigation plan, analyzes what can be done to reduce the UHI effects in Mexico City to improve air quality and quantifies the effects of potential physical changes. Modest surface changes are modeled and predicted to reduce average temperature by more than a full Fahrenheit degree. A decrease in surface temperature can slow the formation of smog and can help mitigate the impacts of the Urban Heat Island effect.
by Karen A. Thundiyil.
M.C.P.
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Siebold, Magdalena [Verfasser], Andreas von [Akademischer Betreuer] Tiedemann, Hans-Joachim [Akademischer Betreuer] Weigel, and Johannes [Akademischer Betreuer] Isselstein. "Effects of rising air and soil temperatures on the life cycle of important pathogens in oilseed rape (Brassica napus L.) in Lower Saxony / Magdalena Siebold. Gutachter: Hans-Joachim Weigel ; Johannes Isselstein. Betreuer: Andreas von Tiedemann." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2013. http://d-nb.info/1044414227/34.

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Siebold, Magdalena Verfasser], Andreas von [Akademischer Betreuer] Tiedemann, Hans-Joachim [Akademischer Betreuer] [Weigel, and Johannes [Akademischer Betreuer] Isselstein. "Effects of rising air and soil temperatures on the life cycle of important pathogens in oilseed rape (Brassica napus L.) in Lower Saxony / Magdalena Siebold. Gutachter: Hans-Joachim Weigel ; Johannes Isselstein. Betreuer: Andreas von Tiedemann." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2013. http://nbn-resolving.de/urn:nbn:de:gbv:7-11858/00-1735-0000-0015-9AB2-2-8.

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Kornder, Niklas Alexander. "Using Regression-Based Effect Size Meta-Analysis to Investigate Coral Responses to Climate Change." NSUWorks, 2016. http://nsuworks.nova.edu/occ_stuetd/415.

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Attempts to quantify the effects of ocean acidification and warming (OAW) on scleractinian corals provide a growing body of response measurements. However, placing empirical results into an ecological context is challenging, owing to variations that reflect both natural heterogeneity and scientific bias. This study addresses the heterogeneity of climate change induced changes in coral recruitment and calcification. To discern scientific bias and identify drivers of the remaining heterogeneity, 100 publications were analyzed using a combination of weighted mixed effects meta-regression and factorial effect size meta‑analysis. A linear model was applied to quantify the variation caused by differing stress levels across studies. The least squares predictions were then used to standardize individual study outcomes and effect size meta-analysis was performed on original and standardized outcomes separately. On average, increased temperature significantly reduces larval survival, while ocean acidification impedes settlement and calcification. Coral resistance to OAW is likely governed by biological traits (genera and life cycle stage), environmental factors (abiotic variability) and experimental design (feeding regime, stressor magnitude, and exposure duration). Linear models suggest that calcification rates are driven by carbonate and bicarbonate concentrations, which act additively with warming. Standardizing outcomes to linear model predictions proved useful in discerning strong sources of scientific bias. The approach used in this study can improve modelling projections and inform policy and management on changes in coral community structure associated with the expected future intensification of OAW.
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Zuru, Abdullahi Abdu. "Evaluation of kinetic parameters and investigation of reaction mechanisms using rising temperature thermogravimetric technique." Thesis, University of Salford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315456.

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Magagula, Sifiso Innocent. "The effect of organic peroxides on the molecular composition of heterophasic ethylene-propylene impact copolymers." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97850.

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Thesis (MSc)--Stellenbosch University, 2015.
ENGLISH ABSTRACT: Heterophasic ethylene-propylene copolymers, also known as impact polypropylene (PP) copolymers (IPCs) or heterophasic copolymers (HECOs), are a unique group of polyolefins produced through the copolymerisation of ethylene and propylene, with the aim of improving the impact properties of the PP homopolymer at low temperatures. Therefore, this polymer comprises of a PP homopolymer matrix with a dispersed rubbery copolymer phase. Due to their unique properties, HECO polymers have become commercially important materials, with a wide range of applications. Therefore a fundamental understanding of the processes and chemistry that affects their final macroscopic properties needs to be expanded. The main focus of this investigation was to understand why specific organic peroxides influence or interact differently with the various phases of HECO polymers, in order to utilize their properties to obtain HECO polymers with optimal and desired properties. Two HECO polymers with different ethylene contents were fractionated into three fractions (30, 100 and 130 °C), using preparative temperature rising elution fractionation (P-TREF). Each individual TREF fraction was degraded with two different types of organic peroxides, and then characterised using four different analytical tools. The changes in the molecular structures of the different fractions were investigated by Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). The changes in comonomer sequence distributions were investigated by carbon 13 nuclear magnetic resonance spectroscopy (13C-NMR). Moreover, the degradation of the different fractions was investigated by high temperature size exclusion chromatography (HT-SEC). The investigation showed that the HECO polymers with different ethylene contents were uniquely altered. It was evident that the ethylene content influenced the degradation behaviour of the HECO polymers. The ability of the peroxide to affect certain regions of the HECO polymer more than others is highly dependent upon its miscibility with certain regions of the HECO polymers. The “visbreaking” efficiency of a specific organic peroxide appears to be primarily dependent on the number of “peroxy” groups it contains in its molecular structure. Stellenbosch University https://scholar.sun.ac.za
AFRIKAANSE OPSOMMING: Heterofase etileen-propileen ko-polimere, ook bekend as impak PP ko-polimere (IPCS) of heterofase ko-polimere (HECO), is 'n unieke groep poliolefiene geproduseer deur die ko-polimerisasie van etileen en propileen, met die doel op die verbetering in die impak eienskappe van die PP homopolimeer by lae temperature. Hierdie polimeer bestaan dus uit 'n PP homopolimeer matriks met 'n verspreide rubberagtige ko-polimeer fase. As gevolg van hul unieke eienskappe, is HECO polimere van kommersiële belang, met 'n wye verskeidenheid van toepassings. 'n Fundamentele begrip van die prosesse en chemie wat die finale makroskopiese eienskappe beïnvloed moet dus uitgebrei word. Die hooffokus van hierdie ondersoek was om te verstaan waarom spesifieke organiese peroksiede verskillende invloede en interaksies met die verskillende fases van HECO polimere het, om sodoende van hul eienskappe gebruik te maak om HECO polimere te verkry met optimale en gewenste eienskappe. Twee HECO polimere met verskillende etileen inhoud was gefraksioneer in drie fraksies (30, 100 en 130 °C), met behulp van preparatiewe temperatuur styging eluering fraksionering (P-TREF). Elke individuele TREF fraksie was gedegradeer met twee verskillende tipes organiese peroksiede en daarna gekarakteriseer deur vier verskillende analitiese metodes. Die veranderinge in molekulêre strukture van die verskillende fraksies was geondersoek met behulp van Fourier transform infrarooi spektroskopie (FTIR) en differensiële skandering kalorimetrie (DSC). Die veranderinge in ko-monomeer volgorde distribusie was bestudeer deur middel van kern magnetiese resonans spektroskopie (KMR). Verder was die degradasie van die verskillende fraksies met behulp van hoë temperatuur grootte uitsluitingschromatografie (HT-SEC) bestudeer. Die ondersoek het getoon dat die HECO polimere met verskillende etileen inhoud uniek gedegradeer was. Dus is dit duidelik genoeg dat die etileen inhoud die degradasie gedrag van die HECO polimere beïnvloed het. Die vermoë van die peroksied om sekere areas van die HECO polimeer meer as ander te beïnvloed is hoogs afhanklik van die mengbaarheid met sekere areas van die HECO polimere. Die "visbreking" doeltreffendheid van 'n spesifieke organiese peroksiede is meestal afhanklik van die aantal "peroksie" groepe in die molekulêre struktuur.
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Hailesilassie, Biruk. "Morphology Characterization of Foam Bitumen and Modeling for Low Temperature Asphalt Concrete." Doctoral thesis, KTH, Byggnadsmaterial, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-183105.

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Development of new asphalt technologies to reduce both energy consumption and CO2 production has attracted great interest in recent years. The use of foam bitumen, as one of them, is attractive due to the low investment and production cost. Formation and decay of foam bitumen is a highly dynamic temperature dependent process which makes characterization difficult. In this thesis, new experimental tools were developed and applied for characterizing the foam bitumen during the hot foaming process.  One of the main goals of this study was to improve understanding and characterization of the foam bitumen formation and decay. X-ray radiography was used to study the formation and decay of foam bitumen in 2D representation. The results demonstrate that the morphology of bubble formation depends on the types of bitumen used. Moreover, theoretical investigation based on the 3D X-ray computed tomography scan dataset of bubble merging showed that the disjoining pressure increased as the gap between the bubbles in the surface layer (foam film) decreased with time and finally was ruptured.   Examining the foam bitumen stream right at the nozzle revealed that foam bitumen at a very early stage contains fragmented pieces of irregular size rather resembling a liquid than foam. The result from thermogravimetric analysis demonstrated that residual water content depends on the initial water content, and was found to be between 38 wt% and 48 wt% of the initial water content of 4 wt% to 6 wt%. Moreover the influence of viscosity and surface tension on bubble shape and rise velocity of the bubbles using level-set method was implemented in finite element method. The modeling results were compared with bubble shape correlation map from literature. The results indicated that the bubble shapes are more dependent on the surface tension parameters than to the viscosity of the bitumen, whereas the bitumen viscosity is dominant for bubble rising velocity.

QC 20160303

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Martin, M. J. "Models of the interactive effects of rising ozone, carbon dioxide and temperature on canopy carbon dioxide exchange and isoprene emission." Thesis, University of Essex, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339238.

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De, Sassi Claudio. "Biotic interactions in a changing world: the role of feeding interactions in the response of multitrophic communities to rising temperature and nitrogen deposition." Thesis, University of Canterbury. School of Biological Sciences, 2012. http://hdl.handle.net/10092/6599.

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Global warming and increasing atmospheric nitrogen deposition are ranked as second and third most important global drivers of biodiversity loss. Widespread species losses have deep implications for the functioning of ecosystems, the delivery of essential ecosystem services and their resilience to future environmental perturbations. There is growing recognition that interactions between species play a crucial role in determining the response of ecosystems to global environmental changes. Moreover, evidence of synergistic effects between global change drivers has prompted numerous calls to integrate multiple drivers in ecological research. Nevertheless, empirical studies assessing the impacts of temperature and nitrogen on communities at multiple trophic levels are largely absent. This thesis explores the effects of temperature and nitrogen on a tri-trophic system comprising plants, herbivores and natural enemies. The first chapter shows impacts of the drivers on the composition and phenology of an herbivore community. The second chapter highlights changes in biomass under the treatments at three trophic levels. The third chapter explores, for the first time, the impacts of temperature and nitrogen on quantitative food webs. Finally, the last data chapter uses body size as an important species trait to gain insights on the mechanisms causing shifts in food web structure. The key findings of this thesis were i) trophic interactions largely mediated the effects of both global change drivers ii) In particular, strong bottom-up effects determined the system response, with herbivores responding positively and consistently more so than plants and parasitoids in particular. However, iii) this contrasting response was not explained by a phenological mismatch. iv) Food-web structure responded to the changes in composition of herbivores and parasitoids, but shifts in interaction structure did not affect the resilience of the food. However, temperature and nitrogen impacted host-parasitoid food-web structure by altering the response of parasitoid species to host density and size structuring, which is likely to bear consequences on host-parasitoid co-evolution and future food-web architecture and stability. Finally, v) we found frequent, non-additive interactions between the global change drivers. We conclude that co-occurring temperature and nitrogen are likely to alter food-web structure and overall ecosystem balance, with increasing herbivore dominance likely to have important implications for ecosystem functioning and food-web persistence.
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Keulder, L. "The effect of molecular composition on the properties of linear low density polyethylene." Thesis, Stellenbosch : University of Stellenbosch, 2008. http://hdl.handle.net/10019.1/2929.

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Thesis (MSc (Chemistry and Polymer Science))--University of Stellenbosch, 2008.
In this study linear low density polyethylene (LLDPE), a copolymer consisting of ethylene and 1-butene, was fractionated by the use of temperature rising elution fractionation (TREF). These fractions were then analyzed by crystallisation analysis fractionation, 13C NMR, high temperature size exclusion chromatography and DSC. The molecular distribution of the polymer was investigated. It was found that the polymer had a very broad distribution in its chemical composition. From these results it was also clear that the catalysts used for the polymerisation consist out of different active sites, producing chains with different molecular architecture. Subsequently the polymer was fractionated again by TREF and certain fractions were removed and the remaining material recombined. The removed fractions and recombined material were analyzed by 13C NMR, high temperature size exclusion chromatography, DSC and DMA. The results were compared with the bulk material and from this we could conclude the influence of the fractions removed on the material properties. This gave us more information on the influence of the chemical structure of the polymer on its mechanical properties. It was clear that by removing certain fractions with a certain chemical composition, the properties of the polymer are significantly influenced.
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Books on the topic "Rising temperatures"

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Brenda, Jackson. Temperatures rising. New York: Kimani Press, 2009.

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Sandra, Brown. Temperatures rising. New York: Doubleday, 1989.

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Sandra, Brown. Temperatures rising. New York: Bantam Books, 1989.

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Sandra, Brown. Temperatures rising. New York: Bantam Books, 2006.

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Brenda, Jackson. Temperatures Rising. Toronto, Ontario: Kimani Press, 2009.

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Sandra, Brown. Temperatures rising. New York: Random House Large Print, 2006.

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Temperatures Rising: Jeffries - 2, Harlequin Kimani Romance - 137, Mother Nature Matchmaker. New York: Kimani Press, 2009.

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Institute, Earth Policy, ed. Outgrowing the earth: The food security challenge in the age of falling water tables and rising temperatures. New York: W.W. Norton & Co., 2004.

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Temperature's Rising. New York: Kensington Publishing Corp., 2008.

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Temperature's rising. New York, NY: Brava/Kensington Publishing Corp., 2008.

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Book chapters on the topic "Rising temperatures"

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Lyttleton, Zippi. "Rising temperatures …" In Colloquial Hebrew, 240–64. 2nd ed. London: Routledge, 2021. http://dx.doi.org/10.4324/9780203883266-13.

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Jamei, Elmira, Mehdi Seyedmahmoudian, and Alex Stojcevski. "Climate Change, Rising Temperatures." In Encyclopedia of Big Data, 173–75. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-319-32010-6_267.

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Jamei, Elmira, and Mehdi Seyedmahmoudian. "Climate Change, Rising Temperatures." In Encyclopedia of Big Data, 1–3. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-32001-4_267-1.

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Jamei, Elmira, Mehdi Seyedmahmoudian, and Alex Stojcevski. "Climate Change, Rising Temperatures." In Encyclopedia of Big Data, 1–3. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-32001-4_267-2.

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Margolis, Helene G. "Heat Waves and Rising Temperatures: Human Health Impacts and the Determinants of Vulnerability." In Global Climate Change and Public Health, 85–120. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-8417-2_6.

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Margolis, Helene G. "Heat Waves and Rising Temperatures: Human Health Impacts and the Determinants of Vulnerability." In Climate Change and Global Public Health, 123–61. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-54746-2_7.

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Quenum, Gandome Mayeul L. D., Nana A. B. Klutse, Eric A. Alamou, Emmanuel A. Lawin, and Philip G. Oguntunde. "Precipitation Variability in West Africa in the Context of Global Warming and Adaptation Recommendations." In African Handbook of Climate Change Adaptation, 1533–54. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_85.

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AbstractIt is commonly accepted that the Earth’s climate is changing and will continue to change in the future. Rising temperatures are one of the direct indicators of global climate change. To investigate how the rising global temperature will affect the spatial pattern of rainfall in West Africa, the precipitation and potential evapotranspiration variables from ten Global Climate Models (GCMs) under the RCP8.5 scenario were driven by the Rossby Centre regional atmospheric model (RCA4) from the COordinated Regional Climate Downscaling EXperiment (CORDEX) and analyzed at four specific global warming levels (GWLs) (i.e., 1.5 °C, 2.0 °C, 2.5 °C, and 3.0 °C) above the preindustrial level. This study utilized three indices, the precipitation concentration index (PCI), the precipitation concentration degree (PCD), and the precipitation concentration period (PCP) over West Africa to explore the spatiotemporal variations in the characteristics of precipitation concentrations. Besides, the analysis of the effect of the specified GWLs on the Consecutive Dry Days (CDD), Consecutive Wet Days (CWD), and frequency of the intense rainfall events allowed to a better understanding of the spatial and temporal patterns of extreme precipitation in West Africa. Results reveal that, for the projections simulations and at each GWL, the rainfall onset starts one month earlier in the Gulf of Guinea in response to the control period. To encourage adaptation to the various changes in climate in general, and particularly in respect of rainfall, this study proposes several adaptation methods that can be implemented at the local (country) level, as well as some mitigation and adaptation strategies at the regional (West African) level.
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de Jong Cleyndert, Georgia, Rebecca Newman, Cecile Brugere, Aida Cuni-Sanchez, and Robert Marchant. "Adaptation of Seaweed Farmers in Zanzibar to the Impacts of Climate Change." In African Handbook of Climate Change Adaptation, 3–28. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_54.

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AbstractSeaweed farming is an important alternative livelihood activity that has been heralded as a development success story. It has advanced women’s empowerment and economic liberation in coastal communities in Zanzibar, despite recent declines in its production. Using data from 36 semistructured interviews, we explore the impacts of climate change on seaweed farming in Zanzibar and the coping and adaptation strategies available to farmers. Interviews reveal that climatic changes observed in Zanzibar are characterized by increased temperatures, increased winds, and irregular rainfall, and these changes have negatively affected coastal seaweed farming yields and quality. Combined with economic challenges, these environmental stressors are threatening the sustainability of seaweed farming and the wider development impacts that have been gained over the past decades. Establishing seaweed farms in deeper water, using new technologies, could be an adaptation method to overcome rising temperatures; however, there are significant socioeconomic barriers for this to happen. For example, women lack access to boats and the ability to swim. Adaptation options to the increasing impacts of climate change will be possible only with institutional support, significant investment, and through the empowerment of women and the participation local communities.
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Latha, P. K., Rekha Shanmugam, Manikandan Krishnamoorthy, and Vidhya Venugopal. "Rising Temperatures and Its Impacts on Thermal Comfort and Productivity—A Case Study from Select Workplaces in Southern India." In Lecture Notes in Civil Engineering, 763–71. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0304-5_53.

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Francuskiewicz, Frieder. "Temperature Rising Elution Fractionation." In Polymer Fractionation, 137–44. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-78704-1_10.

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Conference papers on the topic "Rising temperatures"

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Bowden, Joseph J. "High-Arctic butterflies become smaller with rising temperatures." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.109179.

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Viegas, Claudia, Paulo Selig, José Luis Ribeiro, and Dejanira Saldanha. "An Exploratory Study on Building, Traffic and Temperatures Rising in Porto Alegre City - Brazil." In The 1st World Sustainability Forum. Basel, Switzerland: MDPI, 2011. http://dx.doi.org/10.3390/wsf-00687.

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Voz'mitel', Konstantin Anatol'yevich. "RISING AVERAGE ANNUAL TEMPERATURES REVEALED BY THE DATA COLLECTED IN THE RUSSIAN FEDERAL NATURE PRESERVE “DENEZHKIN KAMEN”." In ФЕНОЛОГИЯ: СОВРЕМЕННОЕ СОСТОЯНИЕ И ПЕРСПЕКТИВЫ РАЗВИТИЯ. Екатеринбург: Б. и., 2020. http://dx.doi.org/10.26170/kf-2020-02.

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Guan, Hongxiang, Sanzhong Li, Yu Hu, and Nengyou Wu. "Rising bottom-water temperatures induced methane release during the middle Holocene in the Okinawa Trough, East China Sea." In Goldschmidt2022. France: European Association of Geochemistry, 2022. http://dx.doi.org/10.46427/gold2022.8761.

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Fajardo, Max. "Observing a Diminishing Snowmelt Period in the Headwaters of the Rio Grande and the Correlations to Rising Global Air Temperatures." In 2019 New Mexico Geological Society Annual Spring Meeting. Socorro, NM: New Mexico Geological Society, 2019. http://dx.doi.org/10.56577/sm-2019.1257.

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Mansour, Rabih, Yogesh P. Singh, Manigandan Kannan, Gregory N. Morscher, Frank Abdi, Jalees Ahmad, Cody Godines, Saber DorMohammadi, and Sung Choi. "Study of Interlaminar Fracture Properties of Ceramic Matrix Composites at Room and Elevated Temperatures." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-65168.

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Interlaminar fracture properties play an important role in predicting failure of structural components for CMC materials. In engine applications, components are subject to large thermal gradients which induce interlaminar stresses. One of the main challenges in evaluating interlaminar fracture toughness at room and elevated temperatures is the development of an experimental setup that provides ease for testing and allows for in-situ monitoring of the interlaminar crack growth. Therefore, a wedge-loaded DCB testing method is developed. The method utilize electrical resistance to monitor crack growth and was applied to a woven polymer infiltrated pyrolysis (PIP) SiC/SiNC composite. Post-testing inspection was carried out using optical microscopy of polished cross-sections, showing crack morphology. It was found that crack growth rate at room temperature is double the one at 815 °C for initial tests in this composite system. Estimates of Mode I energy release rate suggests flat R-curve behavior at room temperature in comparison to rising R-curve behavior at 815 °C.
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Lu, Jinghe, Xiao Liu, Shuying Li, Enhui Liu, Zhihao Zhang, and Binchuan You. "Numerical Study on the Characteristics of Lean Direct Injection Combustor With Elevated Fuel Temperatures." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-14341.

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Abstract With the development of high performance gas turbine engines, the temperature before turbine is rising and it presents a serious challenge to existing thermal management. It is very attractive to use fuel as the cooling medium for gas turbine engines. For this purpose, the effects of fuel temperature on combustion characteristics are urgently needed to be understood. In this work, the characteristics of lean direct injection (LDI) combustor is simulated by changing the physical properties of fuel with different temperatures. The predictions of gas phase and droplet velocity, droplet diameter are compared well with the experiment data. The numerical results show that as fuel temperature rises, the droplet evaporation rate and mixing efficiency of fuel and air in non-reacting case is improved significantly, the spray angle, concentration and distribution profile of fuel in reacting case are enlarged as well. When fuel temperature is raised from 350K to 550K, the peak value of droplet evaporation rate at the vicinity of nozzle is increased by 26.7 times, the uniformity index downstream of the primary recirculation zone (PRZ) is increased by 2.57%, the axial length and maximum negative axial velocity of PRZ are reduced by 13% and 21%. The average temperature and NO emission at combustor outlet are increased by 1.99% and 48.15%, the mass fraction of CO is decreased by 5.45%. Besides, the number, diameter, and distribution space of droplets are decreased sharply. The formation of premixed flame and propagation of high-temperature region are promoted, the flame front is changed from a conical shape to a recessed shape. The combustion efficiency can be improved by increasing fuel temperature. The present study is expected to provide insightful information for understanding characteristics of LDI combustor with elevated fuel temperatures.
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Hafner, Michael, Norbert Müller, Sascha Semmler, and Igor Škrjanc. "Incorporation of Neuro-Fuzzy Knowledge for Fast Measurement of Combustion Engine Maps." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-2351.

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Abstract Map-measurements of internal combustion (IC) engines concerning torque, emissions and other effects are essential for the design and application of an engine control system. With the rising number of engine input- and output variables, however, the measuring efforts rise exponentially and can require up to several weeks. State-of-the-art approaches usually measure equidistant grids in multidimensional input space (load, speed, injection angle, exhaust gas recirculation (EGR), blade position of variable turbine geometry turbochargers (VTG), etc). This paper proposes an extraction of relevant measuring points by a neuro-fuzzy pre-analysis of data of comparable engine types. The chosen data is then sorted according to its temperature behavior in order to reduce time due to waiting for stable temperatures. During the actual measurement, new temperature levels are reached faster by use of a temperature controller and the measuring time can further be reduced by means of output models.
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Kontermann, Christian, Alexander Erbe, Fabian Conrad, Karl Michael Kraemer, and Matthias Oechsner. "Deformation and Damage Behavior of a 1 Cr-Cast Steel Under Multiaxial Loading at Elevated Temperatures." In ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/gt2022-82885.

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Abstract Rising demands on material performance at high temperature in components under complex loading such as steam- and gas turbine housings require an increase in versatility and precision of component life modelling approaches. However, the database to calibrate those models is commonly derived from uniaxial testing. The impact of multiaxial loading, both proportional and non-proportional, is usually addressed theoretically by the use of equivalent stress/strain formulations or reduction ratios derived from few specific validation tests. Therefore, a research program which systematically investigates the fatigue life of a 1Cr-cast steel both experimentally and theoretically has been initiated recently. For the experimental part, cruciform specimens are tested in a servo-hydraulic biaxial test rig equipped with an induction heating device. Each experiment is accompanied with finite element simulations before and after the test to parametrize the loading condition and derive equivalent loading parameters at hot-spot locations. When assessing cycles until crack initiation in the experiments using the von Mises equivalent strain range, a reoccurring sequence in the impact of the axis ratio can be observed. Beside the fatigue life in terms of cycles to crack initiation, the multiaxial loading conditions may also affect the deformation behaviour, in detail cyclic softening. Such effects are discussed by comparing the produced experimental evidence with results gained from a unified constitutive material model. Furthermore, different lifetime parameters are applied in order to judge their accuracy and suitability for design applications.
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Hendricks, Terry J. "Microchannel and Minichannel Heat Exchangers in Advanced Energy Recovery and Conversion Systems." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14594.

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Energy recovery is gaining importance in various industrial process applications because of rising energy costs and geopolitical uncertainties impacting basic energy supplies. Various advanced energy recovery / conversion technologies will require high-performance heat transfer characteristics typical of micro- and mini-channel heat exchangers to achieve energy recovery performance targets and requirements. Initial engineering scoping studies have focused on advanced thermoelectric generator (TEG) systems assuming exhaust gas temperatures of 1033 K (1400 °F) and ambient environment temperatures of 300 K. The engineering analysis used a coupled, integrated thermoelectric (TE) system analysis accounting for the heat exchange / heat transfer performance at both the hot and cold sides and optimum TE device performance to properly predict the power output potential, resulting temperatures and temperature differentials, TEG design and interface requirements, and thermal characteristics across a wide spectrum of potential operating temperature conditions. Modular TEG's capturing about 5% of typical industrial process (e.g., glass manufacturing process) exhaust flows appear to have potential power outputs of 4 - 6 kW using advanced TE materials. Hot-side & cold-side heat exchange requirements were quantified and performance metrics evaluated to enable effective implementation of advanced TEG systems in industrial process energy recovery. Hot side heat transfer requirements create serious engineering, and possibly, scientific challenges to enabling energy conversion systems, including TEG's, in industrial process energy recovery. Future advanced heat transfer R&D is necessary and should occur in parallel with on-going advanced TE materials and systems R&D.
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Reports on the topic "Rising temperatures"

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Colacito, Ricardo, Bridget Hoffmann, and Toan Phan. Research Insights: Do Rising Temperatures Impact Economic Growth? Inter-American Development Bank, October 2019. http://dx.doi.org/10.18235/0001936.

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HI-AWARE, ICIMOD. Even 1.5 degrees is too much: Rising temperatures and wetter futures in South Asian glacier and snow-fed river basins. Kathmandu, Nepal: International Centre for Integrated Mountain Development (ICIMOD), 2018. http://dx.doi.org/10.53055/icimod.877.

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Sanders, Suzanne, Jessica Kirschbaum, and Sarah Johnson. Arctic and alpine rare plant population dynamics at Isle Royale National Park: Response to changing lake levels. National Park Service, February 2022. http://dx.doi.org/10.36967/nrr-2291496.

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Arctic and alpine rare plant species populate wave-splashed rocky shorelines of Isle Royale National Park, where summer temperatures are moderated by Lake Superior. Using data from the mid-1990s and resurvey data from 1998, 2003, and 2016, we examined trajectories of change in occurrence for 25 species at 28 sites coincident with rising lake levels that followed a period of sustained low levels. We analyzed changes in site occupancy of species individually and by functional, geographic, and microhabitat groupings. We also assessed change in population structure for four focal species: Saxifraga paniculata, S. tricuspidata, Pinguicula vulgaris, and Vaccinium uliginosum. Of the 25 species, site occupancy increased for 13 and remained steady for six, declining in another six. Site occupancy did not change over time within functional, geographic, and microhabitat groupings. The four focal species showed similar dynamic and systematically changing populations, responding to similar ecological exposures. We hypothesize that the moderating influence of Lake Superior on air temperature benefits these populations despite warming temperatures and a 15-year sustained low water period. This work contributes to our understanding of the responses of at-risk species to extreme climate events.
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Montz, A., V. R. Kotamarthi, and H. Bellout. Soil carbon response to rising temperature. Office of Scientific and Technical Information (OSTI), September 2012. http://dx.doi.org/10.2172/1051236.

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Turner, R. J. W., and J. J. Clague. Temperature rising - climate change in southwestern British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1999. http://dx.doi.org/10.4095/210905.

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Gourio, François, and Charles Fries. Adaptation and the Cost of Rising Temperature for the U.S. economy. Federal Reserve Bank of Chicago, 2020. http://dx.doi.org/10.21033/wp-2020-08.

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Guidati, Gianfranco, and Domenico Giardini. Verbundsynthese «Geothermie» des NFP «Energie». Swiss National Science Foundation (SNSF), January 2020. http://dx.doi.org/10.46446/publikation_nfp70_nfp71.2020.4.de.

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Die oberflächennahe Geothermie mit Wärmepumpen ist Stand der Technik und in der Schweiz bereits stark verbreitet. Im künftigen Energiesystem soll zusätzlich die mitteltiefe bis tiefe Geothermie (1–6 km) eine wichtige Rolle spielen. Im Vordergrund steht die Lieferung von Wärme für Gebäude und industrielle Prozesse. Diese Form der Erdwärmenutzung setzt einen gut durchlässigen Untergrund voraus, damit ein Fluid – in der Regel Wasser – die natürlich vorhandene Gesteinswärme übernehmen und an die Oberfläche transportieren kann. Bei Sedimentgesteinen ist dies meist von Natur aus gegeben, wogegen bei Graniten und Gneisen die Durchlässigkeit mittels Einpressen von Wasser künstlich herbeigeführt werden muss. Die so gewonnene Wärme nimmt mit zunehmender Bohrtiefe zu: In 1 km Tiefe liegt die Untergrundtemperatur bei ca. 40 °C und in 3 km Tiefe bei ca. 100 °C. Um eine Dampfturbine für die Stromproduktion anzutreiben, sind Temperaturen von über 100 °C notwendig. Da dafür grössere Tiefen von 3 bis 6 km erforderlich sind, steigt auch das Risiko der durch die Bohrungen induzierten Seismizität. Der Untergrund eignet sich ausserdem auch zur Speicherung von Wärme und Gasen, zum Beispiel Wasserstoff oder Methan, sowie zur definitiven Einlagerung von CO2. Dazu muss er ähnliche Voraussetzungen erfüllen wie bei der Wärmegewinnung, zusätzlich ist jedoch eine über dem Reservoir liegende dichte Deckschicht erforderlich, damit das Gas nicht entweichen kann. Im Verbundprojekt «Wasserkraft und Geothermie» des NFP «Energie» wurde vor allem der Frage nachgegangen, wo sich in der Schweiz geeignete Bodenschichten finden, die die Anforderungen der verschiedenen Nutzungen optimal erfüllen. Ein zweiter Forschungsschwerpunkt betraf Massnahmen zur Reduktion der durch Tiefenbohrungen induzierten Seismizität und der daraus folgenden Schäden an Bauten. Im Weiteren wurden Modelle und Simulationen entwickelt, die zu einem besseren Verständnis der Vorgänge im Untergrund bei der Erschliessung und Nutzung der geothermischen Ressourcen beitragen. Zusammengefasst zeigen die Forschungsergebnisse, dass in der Schweiz gute Voraussetzungen vorhanden sind für die Nutzung der mitteltiefen Erdwärme (1–3 km), sowohl für den Gebäudepark als auch für industrielle Prozesse. Auch in Bezug auf die saisonale Speicherung von Wärme und Gasen ist Optimismus angebracht. Die Potenziale für die definitive Einlagerung von CO2 in relevanten Mengen sind demgegenüber als eher limitiert zu bezeichnen. Hinsichtlich der Stromproduktion aus Erdwärme mittels der tiefen Geothermie (> 3 km) besteht noch keine abschliessende Gewissheit, wie gross das wirtschaftlich nutzbare Potenzial im Untergrund wirklich ist. Diesbezüglich sind dringend industriell betriebene Demonstrationsanlagen notwendig, um die Akzeptanz bei der Bevölkerung und bei Investoren zu stärken.
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MECHANICAL BEHAVIOR AND CATENARY ACTION OF RESTRAINED STEEL BEAM UNDER FIRE. The Hong Kong Institute of Steel Construction, September 2021. http://dx.doi.org/10.18057/ijasc.2021.17.3.8.

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To investigate the mechanical behavior and catenary action of restrained steel beam under fire, experiments were performed on five H-section restrained steel beams exposed to ISO-834 standard fire. At first, mechanical property tensile tests were performed on 3 room-temperature specimens and 8 high-temperature specimens, and variation laws of the material properties of steel materials with temperature rising were investigated by the high-temperature steady-state tests. Through the fire experiments, the temperature data, mid-span deflections and failure modes of all specimens were obtained. The experimental results show that: (1) a restrained steel beam is prone to in-plane buckling failure under fire; (2) the loading ratio n and axial restraint stiffness Kx have great influences on the catenary action of restrained steel beam under fire; (3) when the loading ratio n is constant, the greater the axial restraint stiffness Kx, the later the catenary action occurs; when the axial restraint stiffness Kx is constant, the greater the loading ratio n, the earlier the catenary action occurs.
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