Academic literature on the topic 'Hydration process'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Hydration process.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Hydration process"

1

Tan, Hong Bo, Bao Guo Ma, Kai Ke, and Jun Xiao. "Mechanism of Preferential Adsorption of Carboxylic-Vinyl Copolymer, Hydroxy Carboxylate and Sulfonation - Polyol in Cement Hydration Process." Advanced Materials Research 194-196 (February 2011): 1035–40. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.1035.

Full text
Abstract:
In the ternary system of hydroxy carboxylate (HC), sulfonation-polyol (SP) and carboxylic-vinyl copolymer (PC), HC and SP preferentially adsorb on the surface of particles to shield the initial hydration. In this way, the ternary system has excellent dispersibility and holding dispersibility, and it has little effect on later hydration. By means of the chemical shrinkage, SEM and XRD analysis, the hydration mechanism of the hydroxy carboxylate (HC) and sulfonation-polyol (SP) has been discussed and the preferential adsorption model (PAM) has been established. The results show that HC delays the initial hydration of C3S and accelerates both the hydration of C3A and the formation of AFt; HC reduces the strength for 28 d with the addition of 0.2%; SP delays initial hydration of C3S and C3A; the ability of shielding hydration becomes weaker along with cement hydrating and the development of strength is normal. In the ternary system of HC, SP and PC, HC and SP with the electrostatic attraction of -SO3- and COO- and complexation of OH- preferentially adsorb on the surface of particles and active hydrating points. Then, reaction of active hydrating points was shielded and the growth of the hydration products slows. In this way, hydration of C3A and C3S are delayed, and the holding dispersibility of PC becomes better. The PC preferentially adsorbs on inert hydrating points and consumes slowly to provide dispersibility with steric hindrance. Along with hydrating going on, organic compounds are enwrapped by hydration products and the shielding ability becomes weaker and weaker. Then, the hydration becomes normal.
APA, Harvard, Vancouver, ISO, and other styles
2

Matysík, Michal, Tomáš Vymazal, and Iveta Plšková. "Effect of Superplasticizers on the Cement Hydration Process." Advanced Materials Research 1100 (April 2015): 3–6. http://dx.doi.org/10.4028/www.scientific.net/amr.1100.3.

Full text
Abstract:
The cement hydration is an exothermic reaction. The hydration heat is characterizing quantitatively the clinker hydration degree. Monitoring its time response makes it possible to determine not only the heat released during a certain time interval but also the concrete mix setting onset, the cement hydration degree (when evaluating the cement applicability after a long storage period) etc. The measurement of the hydration heat or the temperature versus time plot for a hydrating mix makes it possible to identify the effect of the different additives and admixtures on the mix hydration kinetics. This paper deals with the effect of adding two different super-plasticizers (lignin-sulphonate-based and naphthalene-sulphonate-based) on the hydration heat development progress. A set of iso-peribolic calorimeters was used to measure the hydration heat development process. The measurement proper consisted in monitoring and recording the temperature versus time plot for the specimen under test. The released heat amount was determined by calculation from the temperature gradient, the ambience specific thermal losses, the material thermal capacity and the test specimen mass.
APA, Harvard, Vancouver, ISO, and other styles
3

Gazdič, Dominik, Marcela Fridrichová, Karel Kalivoda, and Jana Stachová. "Study of the Kinetics of Hydration Process of Anhydrite Using External Exciters." Advanced Materials Research 838-841 (November 2013): 2342–45. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.2342.

Full text
Abstract:
Due to the very gradual hydration of anhydrites and their very low strengths, modification of the properties of anhydrite by a suitable external exciter was resolved within the work. The experimental work was conducted on natural anhydride, and as possible exciters for hydration, the following products were selected and tested: water-free sodium sulphate; Portland cement CEM I 42,5 R; hydrated lime CL 90 Carmeuse. The dose of the exciter was consistent, i.e. 4.5 wt%. The affect on the increased speed of the hydrating process and the quality of the technological properties was monitored. The catalytic effect was evaluated by monitoring the course of the hydration process (using XRD analysis and thermo-gravimetric analysis) and also on the basis of the achieved technological properties.
APA, Harvard, Vancouver, ISO, and other styles
4

Wang, Qing, Zhao Yang Ding, J. Zhang, L. G. Qiu, and Zhi Tong Sui. "Study on Slag-Based Geopolymer Hydration Process." Key Engineering Materials 477 (April 2011): 67–71. http://dx.doi.org/10.4028/www.scientific.net/kem.477.67.

Full text
Abstract:
As environment-friendly or green cement, the geopolymer cementitious material has high early age strength, good volume stability and durability. In this paper, the mechanical properties of geopolymer hydrates at different hydrating ages were studied by changing the oxide content of raw material. The results showed that the chemical-combined water kept increasing as hydrating age prolonged, and reached the maximum at n(SiO2)/n(Al2O3)=3.9, n(H2O)/n(SiO2)=2.3 and n(Na2O)/n(Al2O3)=0.6. With the development of hydration, the pH value of geopolymer paste showed fluctuated: pH value kept increased at the age of 1d~3d, then decreased at the age of 3d~7d, at the age of 7d~14d the pH value increased again and at last it remained constant at the age of 14d~28d. 28d compressive strength of geopolymer paste reached the maximum as chemical-combined water content was 0.09g~0.10g and pH value was 10~11.
APA, Harvard, Vancouver, ISO, and other styles
5

Ma, Bao Guo, Lei Su, Shou Wei Jian, Zhi Guang Zhao, and Min Liu. "Early Stage Hydration Process of Hydroxypropyl Methyl Cellulose Ether Modified Cement Pastes." Advanced Materials Research 476-478 (February 2012): 1709–13. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.1709.

Full text
Abstract:
Effect of hydroxypropyl methyl cellulose ether (HPMC) on early stage process of cement pastes and its mechanism were studied by hydration heat, chemical combined water, calcium ion concentration, TG-DTG and Ca (OH) 2 content. Results show that HPMC can significantly delay hydration acceleration period of cement pastes. Hydration acceleration period of cement pastes gradually goes back, with the dosage increasing. However, changes of HPMC dosage has little effect on deceleration period and stabilization period of cement hydration. When hydration time is less than 6 hours, chemical combined water slowly increases. Chemical combined water dramatically increases when hydration time is between 6 hours and 24 hours. After 4 hours hydration, calcium ion concentration reaches maximum 26.8mm/L in blank sample. Calcium ion concentration gradually decreases when hydration time is more than 4 hours and reach minimum 9.2 mm/L after 24 hours hydration. Calcium ion concentration of cement pastes which modified with HPMC showed the same change law. When hydration time is less than 4 hours, the content of Ca (OH) 2 in cement pastes slowly enlarges along with hydration time prolonging. The content of Ca (OH) 2 significantly increases when hydration time is more than 4 hours. At the same age, the more the dosage of HPMC is, the less the chemical combined water, calcium ion concentration and Ca (OH) 2 content.
APA, Harvard, Vancouver, ISO, and other styles
6

Hernandez Miranda, J., S. Soto Simental, N. Guemes Vera, J. Piloni Martini, A. Quintero Lira, and J. A. Rodriguez Avila. "Whey beverage improves hydrating capacity of the soccer players." Food Research 5, no. 5 (September 10, 2021): 63–71. http://dx.doi.org/10.26656/fr.2017.5(5).070.

Full text
Abstract:
The hydration process is critical in soccer players. The hydrating capacity, energy recovery, and electrolyte excretion in urine were determined by the use of a whey beverage as a hydration medium for high-performance athletes compared to the effects of purified water and a sport beverage. The study was carried out through an approved research protocol, which contemplates the determination of hydrating capacity by monitoring body weight during a period of exercise and a subsequent hydration period. Energy recovery was determined by monitoring blood glucose levels and electrolyte excretion was performed by quantifying the concentration of sodium (Na+ ), potassium (K+ ), calcium (Ca2+) and magnesium (Mg2+) in urine samples provided by the participants during the research protocol. It was concluded that the whey beverage has an appropriate capacity for hydration and energy recovery, while with regard to minerals it was observed that it effectively regulates the excretion of Na+ , Ca2+ and Mg2+ .
APA, Harvard, Vancouver, ISO, and other styles
7

Ivanova, Irina, Andrey Pustovgar, Aleksey Eremin, and Aleksey Adamtsevich. "Special Aspects of Hydration Process of Microfine Cement." Applied Mechanics and Materials 725-726 (January 2015): 578–83. http://dx.doi.org/10.4028/www.scientific.net/amm.725-726.578.

Full text
Abstract:
The aim of the present research was to determine special features of hydration process of two commercial microfine cements compared to CEM I 42.5N cement with similar mineralogical composition. The influence of cement fineness and composition on the hydration process was investigated by isothermal calorimetry of cement pastes and quantitative X-ray powder diffraction of hydration products at 1, 3, 7, 14 and 28 days.
APA, Harvard, Vancouver, ISO, and other styles
8

Zhang, Ming, Zhu Ding, Feng Xing, and Peng Liu. "Resistivity Study on Early Hydration Process of Phosphoaluminate Cementitious Material." Advanced Materials Research 79-82 (August 2009): 95–98. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.95.

Full text
Abstract:
An electrodeless resistivity measurement system developed recently can provide a reliable method for monitoring the hydration process of cement-based materials continuously and accurately. Phosphoaluminate cement (PAC) sets quickly and develops high early strength. In order to understand the mechanism, the hydration products and microstructure formation of PAC in early age need to be studied. In the study, early hydration process of PAC with different dosage of retarder was investigated by the electrodeless resistivity equipment. According to resistivity-time curve, resistivity of freshly mixed PAC paste decreases sharply and then rises slowly, some characteristic peaks appear at different hydration stages of PAC. Heat evolution of PAC was also measured. The hydration mechanism and structure formation were studied according to these results. Depending on the dosage of retarder, the hydration process of PAC includes four stages which are dissolution, induction, acceleration and deceleration.
APA, Harvard, Vancouver, ISO, and other styles
9

Perrier, Erica T., Lawrence E. Armstrong, Michel Daudon, Stavros Kavouras, Max Lafontan, Florian Lang, François Péronnet, Jodi D. Stookey, Ivan Tack, and Alexis Klein. "From State to Process: Defining Hydration." Obesity Facts 7, no. 2 (2014): 6–12. http://dx.doi.org/10.1159/000360611.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Siyao, Huang, Xu Mingbiao, Xu Peng, Zhang Yu, and Wang Xinying. "Composite Hydration Process of Clay Minerals Simulating Mineral Clay Components and Influence Mechanism of Cations." Energies 15, no. 20 (October 13, 2022): 7550. http://dx.doi.org/10.3390/en15207550.

Full text
Abstract:
Clay minerals are an important part of the mud shale reservoir, and their type of content has a great impact on the hydration of the formation. The hydration of clay minerals causes a decrease in drilling fluid performance, an increase in pore pressure, and a decrease in rock strength, leading to wellbore wall collapse. Therefore, it is important to study the influence of clay mineral hydration on well-wall stability. In this paper, we analyze the hydration process of clay minerals qualitatively and quantitatively by simulating the mineral clay fraction and the effect of the change in cations on their hydration and clarify the difference in the hydration of different clay minerals. The results show the following: (1) montmorillonite has the most obvious hydration and swelling effect, while the hydration of illite is mainly based on hydration and dispersion, which easily produce exfoliations and fall off in the stratum; kaolinite has poor hydration performance, while chlorite shows certain hydration but low hydration degree. (2) Cations have a certain inhibitory effect on the hydration of clay minerals, and the degree of hydration inhibition is different for different types. (3) Different clay minerals also differ in the form of state after water exposure, as montmorillonite shows swelling, while illite has no swelling, but its dispersion is stronger.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Hydration process"

1

Wei, Xiaosheng. "Interpretation of hydration process of cement-based materials using resistivity measurement /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202004%20WEI.

Full text
Abstract:
Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2004.
Includes bibliographical references (leaves 168-186). Also available in electronic version. Access restricted to campus users.
APA, Harvard, Vancouver, ISO, and other styles
2

Xiao, Lianzhen. "Interpretation of hydration process of concrete based on electrical resistivity measurement /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202007%20XIAO.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Wen, Yanli. "Cement microstructure evolution during the hydration process for nuclear waste immobilisation." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/cement-microstructure-evolution-during-the-hydration-process-for-nuclear-waste-immobilisation(a23c033a-5180-45bc-bb10-21ec149fbeec).html.

Full text
Abstract:
Cement has been selected for wastes immobilization as a simple, low temperature and low cost process for decades. The mechanical and immobilization properties of cement are mainly decided by cement hydration process, especially in the first 24 hours. Previous methods for studying the cement hydration are those include isothermal calorimetry, continuous monitoring of chemical shrinkage, in situ quantitative X-ray diffraction, nuclear magnetic resonance spectroscopy (NMR), quasi-elastic neutron scattering (QENS) and small angle neutron scattering (SANS). Few available in-situ imaging methods were successfully used for net rate study of cement hydration. In this Ph.D. research, innovative imaging techniques such as X-ray computed tomography (XCT) combined with 2D SEM-BSD analysis were combined to study the microstructure and phase change of cement or cement & SrCl2 mixture during hydration. Digital Volume Correlation (DVC) and Digital Image Correlation (DIC) were applied to study the chemical volume shrinkageand drying shrinkage of cement samples during hydration. The effects of SrCl2 simulating the radioactive nuclide from nuclear waste on cement hydration were studied by XRD and ICP-AES techniques. These studies verified that the hydration net rate could be characterised by XCT imaging techniques and the volume shrinkage of cement or cement& SrCl2 mixture during hydration could be characterised by the DVC and DIC techniques.
APA, Harvard, Vancouver, ISO, and other styles
4

Bergold, Sebastian Tobias [Verfasser], and Jürgen [Gutachter] Neubauer. "The process of alite hydration: Implications from quantitative phase analysis of Calcium-Silicate-Hydrate during hydration and from acceleration of the hydration reaction by mechanical activation / Sebastian Tobias Bergold ; Gutachter: Jürgen Neubauer." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2016. http://d-nb.info/1124233946/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Pastor, Alberto Claudio Miano. "Description of grains hydration kinetics and its enhancement using the ultrasound technology." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/11/11141/tde-05012016-164029/.

Full text
Abstract:
The present work had as objective to study the hydration process of grains and its possible enhancement using the ultrasound technology. For that, it was studied the hydration kinetics of different grains (Andean lupin, Adzuki beans, sorghum grains and corn kernels) correlating the morphology with mathematical models and the mass transfer mechanisms. Moreover, the effect of the soaking water temperature and the grain initial moisture content were studied to complement the description of this process. The ultrasound application was studied for improving the hydration process, describing the possible mechanisms (direct and indirect effects) that improve the mass transfer process. Therefore, it was established the way by how water enters in the studied grains, demonstrating that the water transfer into the grains is a complex phenomenon and takes place not only due to diffusional mechanisms, but also by capillarity. In addition, suitable mathematical models were proposed and used to explain the processes, describing their parameters according to the grains morphology and the mass transfer mechanisms. Further, it was determined how ultrasound enhances the mass transfer and in which conditions the direct (inertial flow and sponge effect) and the indirect effects (micro channels formation by acoustic cavitation) take place in the process, maximizing the effect of this technology. Finally, it was demonstrated that the ultrasound technology enhanced the hydration process for corn kernels, reducing significantly the process time in approximately 35 %, without modifying the thermal, structural and rheological properties of their starch. In conclusion, the present work improved the description of the grain hydration phenomenon and proved that the ultrasound technology can be used to enhance this process without changing its main industrial component. It is highlighted that the obtained results are thus high desirable for both the industrial and academic point of view.
O presente trabalho teve como objetivo estudar o processo de hidratação de grãos e sua possível melhora usando a tecnologia do ultrassom. Estudou-se a cinética de hidratação de diferentes grãos (tremoço andino, feijão Adzuki, grãos de sorgo e grãos de milho) correlacionando a morfologia com modelos matemáticos e os mecanismos de transferência de massa. Também foi estudado o efeito da temperatura e o conteúdo de umidade inicial do grão para complementar a descrição deste processo. Estudou-se a aplicação do ultrassom no processo de hidratação descrevendo-se os possíveis mecanismos (efeito diretos e indiretos) que melhoram a transferência de massa. Como resultado, foi estabelecida a forma como a água entra nos grãos estudados, demostrando que a transferência de água dentro dos grãos é um fenômeno complexo e que acontece por difusão e capilaridade. Foram propostos e utilizados modelos matemáticos apropriados para explicar os processos, descrevendo os parâmetros de acordo com a morfologia dos grãos e os mecanismos de transferência de massa. Ainda, determinou-se como o ultrassom melhora a transferência de massa e em que condições do processo acontecem os efeitos diretos (fluxo inercial e efeito esponja) e efeitos indiretos (formação de micro canais pela cavitação acústica), maximizando o efeito dessa tecnologia. Finalmente, demonstrou-se que a tecnologia do ultrassom melhora o processo de hidratação de grãos de milho, diminuindo significativamente o tempo do processo em cerca de 35 % sem alterar as propriedades térmicas, reológicas e estruturais do seu amido. Como conclusão, o presente trabalho melhorou a descrição de como os grãos são hidratados, demonstrando que o ultrassom pode ser usado para melhorar o processo de hidratação de grãos sem alterar os seus principais produtos industriais. Ressalta-se que os resultados obtidos são desejáveis tanto do ponto de vista acadêmico quanto industrial.
APA, Harvard, Vancouver, ISO, and other styles
6

HAUSMAN-MANNING, DEBRA SUE. "APPLICATION OF PROCESS ANALYTICAL TECHNOLOGY TO PHARMACEUTICAL PROCESSES." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1108838053.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Koláček, Tomáš. "Pojiva a malty ze síranu vápenatého." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392362.

Full text
Abstract:
This diploma thesis deals with the study of the binder mortar based on calcium sulphate. The theoretical part deals with the general theory of sulfate binders and anhydrite mortars. Further attention is paid to the standard requirements for these binders and mortars and the evaluation of the existing research at the THD Institute. The experimental part is devoted to research of anhydrite mortar for the production of self-leveling mixtures. The subject of the research was the design of a suitable activating agent, performing technological tests on designed anhydrite pastes and mortars and monitoring hydration.
APA, Harvard, Vancouver, ISO, and other styles
8

Verner, Filip. "Studium hydratačního procesu anhydritových maltovin." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265222.

Full text
Abstract:
The presented work deals with the study of hydration processes anhydrite binders with external exciters. Work is divided into two parts. Conceptually is this work divided into two parts The theoretical part of study contains general theory of gypsum binders, anhydrite binders and research at the institude THD. In the experimental part deals with proposal of recipes, making of samples and subsequent determination of main technological tests and monitoring hydration process by the XRD and DTA analysis.
APA, Harvard, Vancouver, ISO, and other styles
9

Lalsare, Amoolya Dattatraya. "High Pressure Steam Reactivation of Calcium Oxide Sorbents For Carbon Dioxide Capture Using Calcium Looping Process." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1462444410.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Imam, Rayees Ahamed Verfasser], and Kai [Akademischer Betreuer] [Sundmacher. "Evaluation of process concepts for liquid-liquid systems exemplified for the indirect hydration of cyclohexene to cyclohexanol / Rayees Ahamed Imam. Betreuer: Kai Sundmacher." Magdeburg : Universitätsbibliothek, 2014. http://d-nb.info/1060096072/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Hydration process"

1

Tobar, Ximena, and Shannon B. Putman. Viral Gastroenteritis. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199976805.003.0030.

Full text
Abstract:
Viral gastroenteritis is a diarrheal disease associated with nausea, vomiting, headache, abdominal cramping, myalgias, and low-grade fever. Stools are often described as watery, with bouts of diarrhea and emesis that can occur on an hourly basis. Blood or mucus in the stool is suggestive of a bacterial or parasitic process. Additionally, the presence of fecal leukocytes excludes viral infection, as it is suggestive of colonic inflammation. Treatment is mainly supportive with appropriate hydration, including oral rehydration and/or intravenous fluids, being the key intervention. Specific antiviral agents are not available. Prevention and control of spread are important issues for viral gastroenteritis. Hand washing alone may reduce the spread of infection. The use of alcohol-based hand sanitizers and daily disinfection of surfaces with quaternary ammonium wipes has reduced the spread of Norovirus and was found superior to handwashing alone.
APA, Harvard, Vancouver, ISO, and other styles
2

Fleischman, Alan R. Ethical Issues at the End of Life. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199354474.003.0006.

Full text
Abstract:
This chapter deals with the difficult ethical issues associated with children who are dying. A recurring theme in the chapter is the role that children can play in planning their own care. The concept of brain death is examined and it is contrasted with cardiac death. The practice of organ donation after cardiac death is described and its ethical justification is questioned. . Several other controversial ethical issues are analyzed, including the distinction between withholding and withdrawing of treatment, withdrawing medically provided hydration and nutrition from infants who are not in the process of dying, whether pain management at the end of life hastens death and is therefore not permitted, and whether children should die in the hospital or at home. The chapter concludes with a description of how to support families after the death of a child.
APA, Harvard, Vancouver, ISO, and other styles
3

Gattinoni, Luciano, and Alfredo Lissoni. Pathophysiology and therapeutic strategy of respiratory acidosis. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0113.

Full text
Abstract:
Out of 15–30 × 10–3 moles/day of protons derived from the hydration of CO2 only 40–60 × 10–9 moles/day remain unbounded in the plasma. If the CO2 production exceeds the excretion, the CO2 content in plasma and tissue rises (respiratory acidosis) until a new equilibrium is reached. In fact, doubling the PCO2 may compensate the halving of alveolar ventilation with unchanged excretion of the CO2 metabolically produced. Body reacts to respiratory acidosis increasing the secretion of chloride associated with ammonium. The process leads to an increase of bicarbonate in the plasma with an associated increase of pH. All the steps described may be altered in critically-ill patients due to hyper-metabolism, decreased excretion, decreased content of buffering proteins and impaired kidney response. Several options are available for therapy, from mechanical ventilation to artificial lung, up to lung transplant, depending on the severity of clinical conditions and their possible reversibility.
APA, Harvard, Vancouver, ISO, and other styles
4

Dillian, Carolyn. Current Questions and New Directions in Archaeological Obsidian Studies. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199935413.013.2.

Full text
Abstract:
This article discusses the current status of archaeological obsidian studies, including techniques used in characterization and sourcing studies, obsidian hydration, and regional syntheses. It begins with an overview of obsidian and the unique formation processes that create it before turning to a discussion of the significance of characterization and sourcing techniques for understanding prehistoric obsidian trade and exchange. It then considers the problematic aspects of the term “sourcing,” despite its ubiquitous use in archaeology and archaeometry, along with the use of X-ray fluorescence in the chemical characterization of obsidian. It also explores obsidian hydration dating methods and equations, factors that can affect the date assignments for hydration specimens, and the various uses of obsidian in prehistoric times. Finally, it addresses some important questions relating to obsidian research and suggests new directions in the field.
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Hydration process"

1

Rupley, John A., and Giorgio Careri. "Enzyme Hydration and Function." In The Enzyme Catalysis Process, 223–34. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4757-1607-8_15.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Anagnostopoulou-Konsta, A., L. Apekis, C. Christodoulides, D. Daoukaki, and P. Pissis. "Dielectric Study of the Hydration Process in Biological Materials." In Biologically Inspired Physics, 229–40. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4757-9483-0_21.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Nhan, Tran Thanh, Hiroshi Matsuda, Tran Xuan Thach, Nguyen Dai Vien, and Ho Trung Thanh. "Strength of Granulated Blast Furnace Slag during Hydration Reaction Process." In Lecture Notes in Civil Engineering, 427–32. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0802-8_66.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Liang, Zhi-feng, Bo Yang, Lin Wang, Xiaoqian Zhang, Lei Zhang, and Nana He. "Evolving Flexible Neural Tree Model for Portland Cement Hydration Process." In Lecture Notes in Computer Science, 302–9. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-11857-4_34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Gupta, Aakash Kumar, and Prasanna Kumar Acharya. "Effect of Various Waste Materials on Hydration Process Binding Materials." In Lecture Notes in Civil Engineering, 603–18. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8433-3_51.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Farooq, Shafat, Injila Hamid, Umair Ali Wani, and Shakeel A. Waseem. "Estimation of Damage Characterization of Hardened Concrete from Early Hydration Process." In Lecture Notes in Mechanical Engineering, 199–209. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-6738-1_17.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Sun, Jianyuan, Jinbao Xie, and Zhisheng Zhang. "Simulation Analysis of Thermal Stress of CFST Arch Bridge During Exothermic Hydration Process." In Computational and Experimental Simulations in Engineering, 1015–21. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-27053-7_86.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Song, Mu, Jiang Qian, Liu J. Zhong, and Shi Liang. "From a View of Alkali Solution: Alkali Concentration to Determine Hydration Process of Alkali Activating Metakaolin." In RILEM Bookseries, 305–13. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9939-3_38.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Ebrahimi, Davoud, Roland J. M. Pellenq, and Andrew J. Whittle. "SIMULATION OF HYDRATION AND ELASTIC PROPERTIES OF MONTMORILLONITE USING MOLECULAR DYNAMICS." In Multiscale and Multiphysics Processes in Geomechanics, 105–8. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19630-0_27.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Niimura, Nobuo. "Neutron Protein Crystallography. How to Proceed the Experiments to Obtain the Structural Information of Hydrogen, Protons and Hydration in Bio-macromolecules." In Advancing Methods for Biomolecular Crystallography, 321–30. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6232-9_28.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Hydration process"

1

Gorsky, M. P., and A. P. Maksimyak. "Photoacoustic investigations of cement hydration process." In Eleventh International Conference on Correlation Optics, edited by Oleg V. Angelsky. SPIE, 2013. http://dx.doi.org/10.1117/12.2053699.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Perez, Yolanda, A. A. Babaryk, M. Martinez, M. E. G. Mosquera, M. H. Zehender, S. A. Svatek, E. Antolin, and P. Horcajada. "Reversible dehydration-hydration process in lead-free hybrid perovskites." In nanoGe Fall Meeting 2021. València: Fundació Scito, 2021. http://dx.doi.org/10.29363/nanoge.nfm.2021.228.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Skalecki, Patric, Sejmir Idrizi, Michael Schreiner, Frank Lehmann, and Oliver Sawodny. "Hydration Modeling for Improved Curing Process Prediction in Concrete Construction." In 2020 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM). IEEE, 2020. http://dx.doi.org/10.1109/aim43001.2020.9159010.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Hou, Yunfen, Xiaodong Peng, and Bochao Xu. "Effect Mechanism of Metakaolin on the Hydration Process of Cement." In The Joint Conferences of 2015 International Conference on Computer Science and Engineering Technology (CSET2015) and 2015 International Conference on Medical Science and Biological Engineering (MSBE2015). WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814651011_0074.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Gorsky, M. P., and P. P. Maksimyak. "Dynamic coherent light scattering by the cement during hydration process." In Eleventh International Conference on Correlation Optics, edited by Oleg V. Angelsky. SPIE, 2013. http://dx.doi.org/10.1117/12.2053913.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

"The Investigation of Nano Silica in the Cement Hydration Process." In SP-267: Nanotechnology of Concrete: The Next Big Thing is Small. American Concrete Institute, 2009. http://dx.doi.org/10.14359/51663285.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Gorsky, M. P., A. P. Maksimyak, and P. P. Maksimyak. "Study of dynamic light-scattering in the process of cement hydration." In SPIE Proceedings, edited by Oleg V. Angelsky. SPIE, 2006. http://dx.doi.org/10.1117/12.679929.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Jiang, Zhaoxia, Yuzhen Zhang, and Sanzhong Li. "The process of oceanic serpentinization: from seafloor hydration to subduction dehydration." In Goldschmidt2022. France: European Association of Geochemistry, 2022. http://dx.doi.org/10.46427/gold2022.8745.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Gorsky, Michael P., Andrew P. Maksimyak, and Peter P. Maksimyak. "Study of speckle dynamic light-scattering in the process of cement hydration." In Speckle06: Speckles, From Grains to Flowers, edited by Pierre Slangen and Christine Cerruti. SPIE, 2006. http://dx.doi.org/10.1117/12.695501.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Gorsky, Mykhaylo P., and Peter P. Maksimyak. "Dynamic coherent light scattering by the cement with carbon nanotubes during hydration process." In Metamaterials, Metadevices, and Metasystems 2018, edited by Nader Engheta, Mikhail A. Noginov, and Nikolay I. Zheludev. SPIE, 2018. http://dx.doi.org/10.1117/12.2320638.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Hydration process"

1

R. Will Grimes, Norman Merriam, L.J. Fahy, C.G. Mones, Jr L.A. Johnson, F.M. Carlson, T.F. Turner, et al. 1.PRELIMINARY EVALUATION OF A PROCESS USING PLASMA REACTIONS TO DESULFURIZE HEAVY OILS; 2.PROCESS SUPPORT AND DEVELOPMENT FOR COMPCOAL; 3.MISCIBLE/IMMISCIBLE GAS INJECTION PROCESSES; 4.COMPCOAL: A PROFITABLE PROCESS FOR PRODUCTION OF A STABLE HIGH-BTU FUEL FROM POWDER RIVER BASIN COAL; 5.EVALUATION OF ALTERNATE FREE RADICAL INITIATORS FOR HEAVY OIL/PLASTICS CO-PROCESSING; 6.DEVELOPMENT OF AN ON-LINE ALKALI MONITORING PROBE; 7.DEVELOPMENT OF A PORTABLE DATA ACQUISITION SYSTEM; 8.BENCH-SCALE TESTING AND VERIFICATION OF PYROLYSIS CONCEPT FOR REMEDIATION OF TANK BOTTOMS; 9.HAZ-FLOTE: EX-SITU DECONTAMINATION OF MATERIALS; 10.IN-SITU AMELIORATION OF ACID MINE DRAINAGE PROBLEMS; 11.THE SYNAG PROCESS: COAL COMBUSTION ASH MANAGEMENT OPTION; 12.CONDITIONING AND HYDRATION REACTIONS ASSOCIATED WITH CLEAN COAL TECHNOLOGY ASH DISPOSAL/HYDRATION. Office of Scientific and Technical Information (OSTI), October 1999. http://dx.doi.org/10.2172/767235.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

He, Rui, Na (Luna) Lu, and Jan Olek. Development of In-Situ Sensing Method for the Monitoring of Water-Cement (w/c) Values and the Effectiveness of Curing Concrete. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317377.

Full text
Abstract:
As the most widely used construction material, concrete is very durable and can provide long service life without extensive maintenance. The strength and durability of concrete are primarily influenced by the initial water-cement ratio value (w/c), and the curing condition during the hardening process also influences its performance. The w/c value is defined as the total mass of free water that can be consumed by hydration divided by the total mass of cement and any additional pozzolanic material such as fly ash, slag, silica fume. Once placed, field concrete pavements are routinely cured with liquid membrane-forming compounds. For laboratory study, concrete samples are usually cured in saturated lime water or a curing room with a relative humidity (RH) value higher than 95%. Thus, the effectiveness of curing compounds for field concrete needs to be studied. In this study, the dielectric constant value of plastic concrete was measured by ground penetrating radar (GPR). The w/c value of the plastic concrete was calculated by a mathematical model from the measured dielectric constant value. The calculated w/c value was compared with the microwave oven drying measurement determined result in AASHTO T318. A modified coarse aggregate correction factor was proposed and applied in microwave oven drying measurement to determine the w/c value of plastic concrete in AASHTO T318. The effectiveness of curing compound was evaluated by field concrete slabs by GPR measurement. It was found that GPR can be a promising NDT method for In this study, the dielectric constant value of plastic concrete was measured by ground penetrating radar (GPR). The w/c value of the plastic concrete was calculated by a mathematical model from the measured dielectric constant value. The calculated w/c value was compared with the microwave oven drying measurement determined result in AASHTO T318. A modified coarse aggregate correction factor was proposed and applied in microwave oven drying measurement to determine the w/c value of plastic concrete in AASHTO T318. The effectiveness of curing compound was evaluated by field concrete slabs by GPR measurement. It was found that GPR can be a promising NDT method for w/c determination of plastic concrete and curing effectiveness evaluation method for hardened concrete.
APA, Harvard, Vancouver, ISO, and other styles
3

Or, Dani, Shmulik Friedman, and Jeanette Norton. Physical processes affecting microbial habitats and activity in unsaturated agricultural soils. United States Department of Agriculture, October 2002. http://dx.doi.org/10.32747/2002.7587239.bard.

Full text
Abstract:
experimental methods for quantifying effects of water content and other dynamic environmental factors on bacterial growth in partially-saturated soils. Towards this end we reviewed critically the relevant scientific literature and performed theoretical and experimental studies of bacterial growth and activity in modeled, idealized and real unsaturated soils. The natural wetting-drying cycles common to agricultural soils affect water content and liquid organization resulting in fragmentation of aquatic habitats and limit hydraulic connections. Consequently, substrate diffusion pathways to soil microbial communities become limiting and reduce nutrient fluxes, microbial growth, and mobility. Key elements that govern the extent and manifestation of such ubiquitous interactions include characteristics of diffusion pathways and pore space, the timing, duration, and extent of environmental perturbations, the nature of microbiological adjustments (short-term and longterm), and spatial distribution and properties of EPS clusters (microcolonies). Of these key elements we have chosen to focus on a manageable subset namely on modeling microbial growth and coexistence on simple rough surfaces, and experiments on bacterial growth in variably saturated sand samples and columns. Our extensive review paper providing a definitive “snap-shot” of present scientific understanding of microbial behavior in unsaturated soils revealed a lack of modeling tools that are essential for enhanced predictability of microbial processes in soils. We therefore embarked on two pronged approach of development of simple microbial growth models based on diffusion-reaction principles to incorporate key controls for microbial activity in soils such as diffusion coefficients and temporal variations in soil water content (and related substrate diffusion rates), and development of new methodologies in support of experiments on microbial growth in simple and observable porous media under controlled water status conditions. Experimental efforts led to a series of microbial growth experiments in granular media under variable saturation and ambient conditions, and introduction of atomic force microscopy (AFM) and confocal scanning laser microscopy (CSLM) to study cell size, morphology and multi-cell arrangement at a high resolution from growth experiments in various porous media. The modeling efforts elucidated important links between unsaturated conditions and microbial coexistence which is believed to support the unparallel diversity found in soils. We examined the role of spatial and temporal variation in hydration conditions (such as exist in agricultural soils) on local growth rates and on interactions between two competing microbial species. Interestingly, the complexity of soil spaces and aquatic niches are necessary for supporting a rich microbial diversity and the wide array of microbial functions in unsaturated soils. This project supported collaboration between soil physicists and soil microbiologist that is absolutely essential for making progress in both disciplines. It provided a few basic tools (models, parameterization) for guiding future experiments and for gathering key information necessary for prediction of biological processes in agricultural soils. The project sparked a series of ongoing studies (at DTU and EPFL and in the ARO) into effects of soil hydration dynamics on microbial survival strategy under short term and prolonged desiccation (important for general scientific and agricultural applications).
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography