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Dissertations / Theses on the topic 'Heat of hydration'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 January 2023

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1

Sedaghat, Ahmadreza. "Cement Heat of Hydration and Thermal Control." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6142.

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Heat of hydration is a property of Portland cement and a direct result of the chemical reaction between cement and water. The amount of heat released is dependent upon the cement mineralogical composition, curing temperature, water to cement ratio, and cement fineness. High temperature resulting from heat of hydration (thereon referred to as HOH) of cement can affect the hydration process, and consequently the kinetics of development of the mechanical properties of concrete. One of the main reasons triggering the interest in HOH of cement is its implication in thermal cracking of concrete. The

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2

Hunt, Andrew Philip. "Heat strain, hydration status, and symptoms of heat illness in surface mine workers." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/44039/1/Andrew_Hunt_Thesis.pdf.

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The aim of the research program was to evaluate the heat strain, hydration status, and heat illness symptoms experienced by surface mine workers. An initial investigation involved 91 surface miners completing a heat stress questionnaire; assessing the work environment, hydration practices, and heat illness symptom experience. The key findings included 1) more than 80 % of workers experienced at least one symptom of heat illness over a 12 month period; and 2) the risk of moderate symptoms of heat illness increased with the severity of dehydration. These findings highlight a health and safety co

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3

Over, Derya. "Early Heat Evolution In Natural Pozzolan-incorporated Cement Hydration." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614533/index.pdf.

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Portland cement hydration is an exothermic process. The heat evolved during the hydration process is especially important in mass concrete, and hot and cold weather concreting. Heat of hydration is affected by several factors like chemical composition of cement, fineness of cement and ambient temperature. The major aim of this thesis is to investigate the effect of cement composition and fineness, amount and composition of the fine portion (&lt<br>45 &micro<br>m) of natural pozzolan-incorporated cement on hydration heat. For this purpose, a portland cement and pozzolan-incorporated blended ce

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4

Miller, Veronica Susan. "Validation of a heat stress index and hydration of workers in tropical Australia." Thesis, Curtin University, 2007. http://hdl.handle.net/20.500.11937/1962.

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In many parts of Australia the climate is such that people are working long hours in the heat. Consequences of excessive environmental heat stress range from reduction in safety due to impairment of concentration, to heat illness, which in extreme cases can be fatal. A critical factor in tolerance of workers to environmental heat stress is their level of hydration. Maximising productivity without compromising the health and safety of the work force requires quantification of the degree of stress posed by the thermal environment. For this purpose a number of heat stress indices have been develo

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Miller, Veronica Susan. "Validation of a heat stress index and hydration of workers in tropical Australia." Curtin University of Technology, School of Public Health, 2007. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=18028.

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In many parts of Australia the climate is such that people are working long hours in the heat. Consequences of excessive environmental heat stress range from reduction in safety due to impairment of concentration, to heat illness, which in extreme cases can be fatal. A critical factor in tolerance of workers to environmental heat stress is their level of hydration. Maximising productivity without compromising the health and safety of the work force requires quantification of the degree of stress posed by the thermal environment. For this purpose a number of heat stress indices have been develo

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6

Cheung, Stephen Sau-Shing. "The thermophysiology of uncompensable heat stress, influence of hydration status, fluid replacement, aerobic training, physical fitness, and heat acclimation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ35124.pdf.

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7

Pyke, Andrew J. "Heat strain evaluation of overt and covert body armour." Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/62933/1/Andrew_Pyke_Thesis.pdf.

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Body armour is designed to protect the wearer from knife and bullet assault but may have an unintended consequence of increasing the risk of the wearer to developing heat strain. A controlled, laboratory based evaluation was undertaken of two non-military lightweight body armour garments. The study found that the heat strain observed while wearing covert and overt body armour, in a hot and humid environment, was negligible compared to not wearing any body armour.

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8

Woolley, G. R. "A study of the characteristics of heat of hydration of PFA concrete in thin structures." Thesis, University of Leeds, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305566.

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9

Ramaswamy, Raghupathy. "Thermal behavior of food materials during high pressure processing." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1190122901.

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10

Lagundzija, Sandra, and Marie Thiam. "Temperature reduction during concrete hydration in massive structures." Thesis, KTH, Betongbyggnad, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210031.

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Concrete is one of the most used building materials in the world because of its good properties. However, cement which is one of the main components in concrete, produces a high amount of heat during the hydration process. The generated heat leads to temperature rise inside the structure. This temperature rise becomes an issue for massive concrete structures, such as hydropower plants and dams, since natural cooling is no longer sufficient. In combination with restrained boundary conditions, increasing temperatures result in tensile stresses causing thermal cracking of the structure. Reducing

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11

Johnson, Dustin Jerald. "City limits: Heat tolerance is influenced by body size and hydration state in an urban ant community." Scholarly Commons, 2019. https://scholarlycommons.pacific.edu/uop_etds/3578.

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Cities are rapidly expanding, and global warming is intensified in urban environments due to the urban heat island effect. Therefore, urban animals may be particularly susceptible to warming associated with ongoing climate change. Thus, I used a comparative and manipulative approach to test three related hypotheses about the determinants of heat tolerance or critical thermal maximum (CTmax) in urban ants—specifically, that (1) body size, (2) hydration status, and (3) preferred micro-environments influence CTmax. I further tested a fourth hypothesis that native species are particularly physiolo

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12

Sachdeva, Parveen. "Molecular Dynamics Study of Thermal Conductivity Enhancement of Water Based Nanofluids." Doctoral diss., University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2158.

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A systematic investigation using molecular dynamics (MD) simulation involving particle volume fraction, size, wettability and system temperature is performed and the effect of these parameters on the thermal conductivity of water based nanofluids is discussed. Nanofluids are a colloidal suspension of 10 -100 nm particles in base fluid. In the last decade, significant research has been done in nanofluids, and thermal conductivity increases in double digits were reported in the literature. This anomalous increase in thermal conductivity cannot be explained by classical theories like Maxwell's mo

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13

Shanahan, Natallia. "Interaction of Cementitious Systems with Chemical Admixtures." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6386.

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The use of supplementary cementitious materials (SCMs) in commercial construction have been increasing over the last several decades as climate change and sustainability has been gaining global attention. Incorporation of SCMs into concrete mixtures provides several environmental benefits. Since most SCMs are waste by-products of other industries, their use in concrete reduces waste disposal. Additionally, cements substitution with SCMs reduces the carbon footprint of the construction industry. Cement production generates large amounts of CO2 emissions; the use of SCMs reduces the amount of ce

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14

Bourchy, Agathe. "Relation chaleur d'hydratation du ciment : montée en température et contraintes générées au jeune âge du béton." Thesis, Paris Est, 2018. http://www.theses.fr/2018PESC1035/document.

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L’hydratation du ciment est une réaction exothermique. Ce phénomène est particulièrement surveillé lorsque des pièces massives sont construites étant donné l’élévation de la température, le développement de contraintes thermomécaniques et le risque de réaction sulfatique interne. Compte tenu de la grande variété des formules de béton, le choix d’un ciment ayant une basse chaleur d’hydratation à 41 h n’est plus exclusif. La chaleur totale dégagée dépend d’autres paramètres de formulation tels que le dosage en ciment et l’emploi d’addition. D’un point de vue mécanique, le risque de fissuration d

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15

Baillot, Michelle. "Activités cycliques de longue durée en climat tropical : analyse des stratégies d'hydratation, de thermorégulation et influence du rôle de la fatigue musculaire sur la performance, en compétition et en laboratoire." Thesis, Antilles, 2016. http://www.theses.fr/2016ANTI0046/document.

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La baisse de la performance aérobie en climat tropical a été décrite dans de multiples activités d’endurance mais les processus responsables de cette altération restent assez méconnus. Nous nous proposons donc au travers d’études de laboratoire et de terrain, de tenter d'explorer les mécanismes responsables de cette baisse de performance aérobie en climat tropical. Si l'atteinte d'une température plafond est plutôt observée dans les protocoles de laboratoire, particulièrement à des intensités élevées, il semble que les mécanismes d'anticipation par réduction de l'intensité de l'exercice soient

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16

Neuschl, Marcel. "Betonová konstrukce spodní stavby administrativního objektu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392229.

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The theme of this diploma thesis is the design and assessment of a part of the underground load-bearing structure of the administrative center according to the source material. Emphasis is placed on the design, taking into account the waterproofness of the construction, the so-called white tank. This is ensured by the correct design of the concrete construction of the foundation slab and walls, taking into account the constructional details of the day and expansion joints, the concrete composition and the construction process.

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17

Said, Mansour Mohamed. "Influence du métakaolin sur le comportement rhéologique et mécanique des bétons à hautes performances." Thesis, Cergy-Pontoise, 2010. http://www.theses.fr/2010CERG0496.

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L'utilisation du kaolin calciné, sous forme de métakaolin, comme matériau pouzzolanique pour le mortier et le béton a suscité une attention considérable ces dernières années. Le travail actuel décrit les résultats d'un projet de recherche lancé pour étudier la calcination d'un kaolin local sous diverses températures (650-950°C) et durées (2, 3 et 4 heures) qui ont produit le métakaolin avec une activité pouzzolanique élevée. L'activité pouzzolanique a été évaluée par des méthodes de la chaleur d'hydratation et la résistance à la compression à 28 jours. L'activité maximale a été obtenue à une t

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18

Menezes, Alexandre Jorge Rocha. "Analysis of the behavior of concrete thermomechanical of low resistance in low ages." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=16161.

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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>Great works of infrastructure such as hydroelectric plants require, in it building, large concrete volumes classified as mass concrete structures. These works of power generation are strategic and fundamental for the development of a nation. However, during construction and throughout its life they may have pathological manifestations that compromise its stability. One of the most common problems in this type of structure is cracking caused by heat generated due to the exothermic reaction of cement hydration. Therefore, we had to an

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19

Ribeiro, Bruno. "Study of Effective Use of Sugarcane Residue as Eco-friendly Construction Materials for Disaster Prevention Structures." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263808.

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付記する学位プログラム名: 京都大学大学院思修館<br>京都大学<br>新制・課程博士<br>博士(総合学術)<br>甲第23347号<br>総総博第20号<br>京都大学大学院総合生存学館総合生存学専攻<br>(主査)教授山敷庸亮, 教授山本貴士, 教授寶馨, 教授齋藤敬<br>学位規則第4条第1項該当<br>Doctor of Philosophy<br>Kyoto University<br>DFAM

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20

Merta, Michael. "Problematika návrhu a testování betonů pro vodonepropustná tunelová ostění." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240159.

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The diploma thesis deals with the issue of waterproof concrete and testing its properties. The theoretical part is conceived through research on existing knowledge relating to waterproof concrete. Emphasis is placed on the possibility of using a waterproof concrete for structures, such is e.g. tunnel lining. The experimental part is focused on the laboratory testing of waterproof concrete. Particulary examined was the effect of various admixtures as a partial replacement of cement. Monitored was the development of compressive strength and flexural strength, development of temperature during hy

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21

Anderson, Byron Keith. "Thermal Integrity Profiling Instrumentation Development." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/2987.

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Abstract This thesis has shown that the development of the instrumentation necessary to provide in-situ thermal imaging for the determination of homogeneity of concrete is theoretically sound. Drilled shafts are large diameter underground cast-in-place columns that necessarily rely on sound integrity to properly withstand imposed loadings. As a by-product of the most common construction techniques, the entire process is often completely blind whereby the excavation and concreting processes are conducted beneath the surface of the water table (or slurry level). This results in an inability to i

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22

Khalil, Noura. "Formulation et caractérisation chimique et rhéologique des mortiers imprimables en 3D à base de mélanges de ciments Portland et sulfoalumineux." Thesis, Ecole nationale supérieure Mines-Télécom Lille Douai, 2018. http://www.theses.fr/2018MTLD0014/document.

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Ce travail s’intéresse à la formulation et à la caractérisation de mortiers cimentaires imprimables en 3D. Il a été réalisé dans le cadre du projet MATRICE cofinancé par le fonds Feder et la région Hauts de France. Un cahier des charges pour un matériau cimentaire imprimable est tout d’abord défini sur la base de trois critères : l’extrudabilité, la constructibilité et la conservation des résistances mécaniques sur matériau imprimé. Deux mortiers imprimables sont formulés en utilisant des essais simples à l’échelle du laboratoire. Le premier mortier, à prise lente, est composé d’un liant à bas

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23

Sims, Jesse N. L. "Exploration of fluid intake practices in endurance running." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/226656/1/Jesse_Sims_Thesis.pdf.

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Utilising a survey based approach, this thesis aimed to understand how fluid intake practices differ among endurance runners and characterise how fluid practices may reflect performance outcomes. The findings from this study indicate that collectively there is no difference between sex when exploring fluid intake beliefs and behaviours towards hydration optimisation strategies. This suggests that human behaviour is influential in understanding fluid intake practices in endurance runners. Fluid intake optimisation strategies are highly individualised and further research is still required to sh

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Melo, Sandra Kurotusch de. "Estudo da formação da etringita tardia em concreto por calor de hidratação do cimento." Universidade Federal de Goiás, 2010. http://repositorio.bc.ufg.br/tede/handle/tede/4464.

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Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2015-04-27T15:25:17Z No. of bitstreams: 3 Dissertação - Sandra Kurotusch de Melo - 2010 - (1).pdf: 4813708 bytes, checksum: 1d9f47d43918bba38729e74a5014833d (MD5) Dissertação - Sandra Kurotusch de Melo - 2010 - (2).pdf: 12360828 bytes, checksum: 0c969028600897645eaa255c2ea06346 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2015-04-27T15:28:35Z (GMT) No. of bitstreams: 3 Dissertação - Sandra Kurotusch de Melo - 2010 - (1).pdf: 48

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Kasap, Keskin Ozlem. "Monitoring The Development Of Properties In Fresh Cement Paste And Mortar By Ultrasonic Waves." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610367/index.pdf.

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The determination and following up the development of properties during the fresh state and early ages of concrete are important in order to schedule the work and to obtain the desired properties in the hardened concrete. As the traditional methods such as Vicat and Penetrometer mostly depend on the experience of the operator and do not provide a continuous picture of the development of properties, reliable and objective non-destructive test methods are needed for the quality control of fresh concrete. The purpose of this thesis is to observe the development of properties of fresh pastes and

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MELO, Sandra Kurotusch de. "Estudo da formação da etringita tardia em concreto por calor de hidratação do cimento." Universidade Federal de Goiás, 2010. http://repositorio.bc.ufg.br/tede/handle/tde/1338.

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Made available in DSpace on 2014-07-29T15:18:22Z (GMT). No. of bitstreams: 1 dissertacao sandra k de melo - parte 1.pdf: 1174678 bytes, checksum: 23084cd61c88de8cd244682ffbc84c82 (MD5) Previous issue date: 2010-07-05<br>Delayed ettringite formation (DEF) is a special type of an internal sulfate attack with SO4 2- ions from cement. This process is distinguished by neoformation of ettringite in concrete thermally cured at high temperature levels and exposed to high moisture in service life. This phenomenon can promote expansion and cracking, leading to rupture and spalling, achieving severe de

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Al-Khaffaf, Lubna, and Hala Khalil. "Effekt av fasändringsmaterial på hydratiseringprocessen hos Portlandcement: En experimentell studie." Thesis, KTH, Byggteknik och design, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-285060.

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The Phase change materials (PCM) have the ability to absorb and release heat as the temperature changes from high to low temperature and vice versa. The use of phase change materials has increased in the construction sector due to the established environmental requirements and the various application benefits, especially in the thermal comfort of building applications and construction of sustainable infrastructure around the world (Berardi and Gallardo, 2019). Over the past decade, many studies have been conducted on the thermal properties of PCM (phase change material), however, few studies h

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Bayer, Raci Ismail. "Use Of Preplaced Aggregate Concrete For Mass Concrete Applications." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/3/12605131/index.pdf.

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Heat of hydration is a source of problem in mass concrete since it causes the difference between the inner and the outer temperatures increase excessively, which leads thermal cracks. The first step in fighting against this problem is to keep the initial temperature of concrete as low as possible. From this point of view, Preplaced Aggregate Concrete (in short PAC) is quite advantageous, because the friction taking place among the coarse aggregates during the mixing operation causes the initial temperature of concrete increase. However, since coarse aggregates are not subjected to the mixing o

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Hösthagen, Anders. "Thermal Crack Risk Estimation and Material Properties of Young Concrete." Licentiate thesis, Luleå tekniska universitet, Byggkonstruktion och brand, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65495.

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This thesis presents how to establish a theoretical model to predict risk of thermal cracking in young concrete when cast on ground or an arbitrary construction. The crack risk in young concrete is determined in two steps: 1) calculation of temperature distribution within newly cast concrete and adjacent structure; 2) calculation of stresses caused by thermal and moisture (due to self-desiccation, if drying shrinkage not included) changes in the analyzed structure. If the stress reaches the tensile strength of the young concrete, one or several cracks will occur. The main focus of this work is

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Пітак, Ярослав Миколайович. "Вогнетривкі та жаростійкі неформовані матеріали на основі композицій системи RO – R₂O₃ – RO₂ – P₂O₅". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2005. http://repository.kpi.kharkov.ua/handle/KhPI-Press/40380.

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Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.17.11 – технологія тугоплавких неметалічних матеріалів. – Національний технічний університет “Харківський політехнічний інститут”, Харків, 2005. Дисертація присвячена розробці наукової концепції створення вогнетривких та жаростійких неформованих матеріалів на основі композицій системи RO – R₂O₃ – RO₂ – P₂O₅. Досліджено субсолідусну будову чотирикомпонентних систем: M–A–S–P, C–А–S–P, Zn–Z–S–B, Zn–A–Z–S, C–M–S–P, A–Z–S–P, M–Z–S–P, C–A–S–B, C–A–Z–S, C–M–A–S, C–Sr–A–Z. Визначено співіснуючі фази в системах, виконан

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Wilkinson, Matthew. "Influence of Hydration on Sleep, Nocturnal Heart Rate Variability, and Cognition." Ohio University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1490124037944407.

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Gambale, Patrícia Guedes. "Estudo do calor de hidratação do concreto massa e contribuição ao cálculo térmico e à previsão de fissuras de retração." Universidade Federal de Goiás, 2017. http://repositorio.bc.ufg.br/tede/handle/tede/8037.

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Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2017-12-13T11:59:28Z No. of bitstreams: 2 Dissertação - Patrícia Guedes Gambale - 2017.pdf: 11002358 bytes, checksum: 0a8a575fbc0c16340994402f2059944c (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2017-12-13T12:00:08Z (GMT) No. of bitstreams: 2 Dissertação - Patrícia Guedes Gambale - 2017.pdf: 11002358 bytes, checksum: 0a8a575fbc0c16340994402f2059944c (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Ma

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Vasudevamurthy, Madhusudan. "Betaine analogues and related compounds for biomedical applications." Thesis, University of Canterbury. Chemical and Process Engineering, 2006. http://hdl.handle.net/10092/1096.

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Living cells accumulate compensatory solutes for protection against the harmful effects of extreme environmental conditions such as high salinity, temperature and desiccation. Even at high concentrations these solutes do not disrupt the normal cellular functions and at times counteract by stabilizing the cellular components. These properties of compensatory solutes have been exploited for stabilizing proteins and cells in vitro. Betaines are widespread natural compensatory solutes that have also been used in other applications such as therapeutic agents and polymerase chain reaction (PCR) enha

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Hauck, Tiburski Julia. "Comprehensive study of the heat resistance of dried Bacillus subtilis spores." Thesis, Dijon, 2013. http://www.theses.fr/2013DIJOS071/document.

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En réponse à un stress nutritif, les espèces du genre Bacillus sont susceptibles de former desspores métaboliquement dormantes résistantes à d’autres formes de stress. Ces spores peuventse retrouver à forte concentration dans beaucoup d’aliments secs, ce qui peut provoquer desintoxications alimentaires ou dégrader les aliments lorsqu’ils sont réhydratés. Comme leurdestruction est très difficile, la plupart des méthodes couramment utilisées pour décontaminerles aliments secs sont peu efficaces. L’objectif de ce travail est de comprendre l’influence del’hydratation de la spore sur l’inactivation

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Janíčková, Petra. "Systémy rychle tuhnoucích směsí na bázi portlandských cementů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228163.

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The project elaborated in frame of engineering studies branch N2332-00. The project is submitting design of technology production sand mixture with cement binder – Portland binder CEM I 42,5 N. Pursuant to of the literary pursuit a problem of the sand mixture with cement binder was tested few sand mixture. As optimal composition it turned out application sand mixture with 2 % CaCl2 content and 1 – 2 % Dextrin content. Sand mixture with cement has good moulder and regenerating.

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McCafferty, Sean, Jason Levine, Jim Schwiegerling, and Eniko T. Enikov. "Goldmann applanation tonometry error relative to true intracameral intraocular pressure in vitro and in vivo." BIOMED CENTRAL LTD, 2017. http://hdl.handle.net/10150/626266.

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Background: Goldmann applanation tonometry (GAT) error relative to intracameral intraocular pressure (IOP) has not been examined comparatively in both human cadaver eyes and in live human eyes. Futhermore, correlations to biomechanical corneal properties and positional changes have not been examined directly to intracameral IOP and GAT IOP. Methods: Intracameral IOP was measured via pressure transducer on fifty-eight (58) eyes undergoing cataract surgery and the IOP was modulated manometrically on each patient alternately to 10, 20, and 40 mmHg. IOP was measured using a Perkins tonometer in th

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McCafferty, Sean, Jason Levine, Jim Schwiegerling, and Eniko T. Enikov. "Goldmann and error correcting tonometry prisms compared to intracameral pressure." BIOMED CENTRAL LTD, 2018. http://hdl.handle.net/10150/626542.

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Background: Compare Goldmann applanation tonometer (GAT) prism and correcting applanation tonometry surface (CATS) prism to intracameral intraocular pressure (IOP), in vivo and in vitro. Methods: Pressure transducer intracameral IOP was measured on fifty-eight (58) eyes undergoing cataract surgery and the IOP was modulated manometrically to 10, 20, and 40 mmHg. Simultaneously, IOP was measured using a Perkins tonometer with a standard GAT prism and a CATS prism at each of the intracameral pressures. Statistical comparison was made between true intracameral pressures and the two prism measureme

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Chen, Bao. "Study of an ettringite-based thermochemical energy storage for buildings." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI056.

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Les besoins en énergie dédiés au chauffage et à l'eau chaude sanitaire dans des bâtiments, caractérisés par des pics de consommation en début et en fin de journée tout comme en hiver, représentent un défi d’importance vis-à-vis de l'utilisation des énergies renouvelables. Une des technologies les plus prometteuses, se présente sous la forme d’un système de stockage d'énergie dit thermochimique (TCES). Ce mode de stockage permet en effet de stocker différents types d'énergie sous la forme d’un potentiel chimique et est caractérisé par une absence de dissipation d'énergie. En tant que matériau d

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Jiang, Ming-Ying, and 江明英. "STUDY ON HYDRATION BEHAVIOR OF EUGENIC CONCRETE MEASURED BY HYDRATION HEAT AND PULSE ULTRASONIC VELOCITY." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/44700266620714604415.

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Lin, Grace, and 林彥吟. "FEM Analysis on Hydration Heat Conduction and Thermal Stress in Concrete." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/24625886406293878547.

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Lin, Siao-Shan, and 林筱珊. "Effect of Admixture and Water-to-Binder Ratio on Hydration Heat of Mass Concrete." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/bs6vea.

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碩士<br>國立嘉義大學<br>土木與水資源工程學系研究所<br>106<br>In this study, three groups of water-to-binder ratio (0.3, 0.4, 0.45), five groups of slag and fly ash substitution rate (0%, 40%, 50%, 60%, 65%) and two chemical agents, strong plasticizers and retarders, a total of nine groups of ratios, to explore the effect of the admixture and water-to-binder ratio on the hydration heat in the initial stage of concrete condensation. In addition, two sets of ratios were used to carry out large-scale trials on the spot to simulate the actual construction of the mass concrete. The laboratory results showed that the ini

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"Dietary Intake Behaviors of Recreational Mountain Hikers Climbing "A" Mountain in Summer and Fall." Master's thesis, 2020. http://hdl.handle.net/2286/R.I.56957.

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abstract: More than 200 hikers are rescued annually in the greater Phoenix area. This study examined the impact of hiking in hot (HOT), dry temperatures versus moderate (MOD) temperatures on dietary intake behaviors as well as markers of heat stress. Twelve recreational mountain hikers climbed “A” Mountain four consecutive times (4-miles) on a HOT day (WBGT=31.6 °C) and again on a MOD day (WBGT= 19.0 °C). Simulated food and fluid behavior allowed participants to bring what they normally would for a 4- mile hike and to consume both ad libitum. The following heat stress indicators (mean d

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Greensmith, Christopher Graeme. "The effects of cement extenders and water to binder ratio on the heat evolution characteristics of concrete." Thesis, 2006. http://hdl.handle.net/10539/1516.

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Student Number : 9900772K - MSc research project - School of Civil and Environmental Engineering - Faculty of Engineering and the Built Environment<br>The hydration of cement is an exothermic reaction, which begins almost immediately upon contact with water. This produces a large amount heat that subsequently raises the temperature of the concrete mixture, creating a temperature gradient across the member. The temperature rise associated with hydration induces thermo-mechanical stresses. These stresses can cause damage to the structure, affecting the durability and in extreme cases th

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(8810045), Tori Morgan Kroon. "Global Deletion of Sost Increases Intervertebral Disc Hydration But May Trigger Chondrogenesis." Thesis, 2020.

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Intervertebral discs (IVD) degenerate earlier than many other musculoskeletal tissues and will continue to degenerate with aging. IVD degeneration affects up to 80 percent of the adult population and is a major contributing factor to low back pain. Anti-sclerostin antibody is an FDA-approved treatment for osteoporosis in postmenopausal women at high-risk for fracture and, as a systemic stimulant of the Wnt/LRP5/b-Catenin signaling pathway, may impact the IVD. Stabilization of b-Catenin in the IVD increases Wnt signaling and is anabolic to the extracellular matrix (ECM), while deletion of b-ca

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Wang, I.-Feng, and 王譯鋒. "The Study of Application on Minor Nano-Meter Particles of Zirconia for Cement mortar Strength and Heat of Hydration." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/09021633376111751817.

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碩士<br>國立嘉義大學<br>土木與水資源工程學系研究所<br>95<br>This study is mainly aimed at the replacement of a portion of the cement with the additive material, ZrO2 (TZ) and at investigating the impacts of ZrO2 on the cement mortar’s dynamic characteristics and hydrochemical temperatures. The experiments applied the ratios of 1% to 10% (TZ01 ~ TZ10) to replace a portion of the cement for producing the cubical and rectangular cement mortar specimens. The ages at which the material used for the production of obtained specimens were 3 days, 7 days, 28 days, and 56 days. Also, the degrees of pressure resistance and b

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Din, Dun-Yen, and 丁敦彥. "The Research of Composition of Concrete Mixtures of Self-Compacting Concrete of Low Heat of Hydration and Prediction of Strength." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/08587862929024063276.

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Jang, Se Hoon. "Identification of Concrete Incompatibilities Using Cement Paste Rheology." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-349.

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The complex interaction between cement and chemical/mineral admixtures in concrete mixtures sometimes leads to unpredictable concrete performance in the field which is generally defined as concrete incompatibilities. Cement paste rheology measurements instead of traditional workability tests (i.e., slump cone test) can have great potential in detecting those incompatibilities in concrete before the concrete is placed, which can, in turn, avoid related workability problems and setting time as well as heat evolution abnormalities. The objectives of the present study were to examine the applicabi

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Barchin, Alexander, and Navid Sedighi. "Alternative methods to prevent thermal cracking in concrete." Thesis, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-255844.

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In the construction industry, concrete is the most common material, because of its good properties such as compressive strength and endurance. Concrete is a composition of several different materials where one of the main components is cement. When the hydration process starts, large amount of heat is generated. This leads to temperature rise within the structure. The heat development that takes place can become critical for massive structures such as dams and power plants, where natural cooling is not sufficient. This in combination with internal and external restraint resulting in tensions c

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