Academic literature on the topic 'Chemistry-apparatus'

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Journal articles on the topic "Chemistry-apparatus"

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Galiga, Henley. "Development of an improvised convertible distillation apparatus for teaching and learning chemistry." Palawan Scientist 11 (July 2019): 65–84. http://dx.doi.org/10.69721/tps.j.2019.11.1.06.

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Distillation is an important concept in chemistry as it involves separation techniques which are widely used in various industries. However, despite its significance, it is hardly understood and appreciated because it is rarely performed in laboratory experiments. Distillation requires expensive apparatus to conduct which most schools cannot afford. Hence, an improvised convertible distillation apparatus for simple, fractional and steam distillation was developed using common household and recyclable materials. Improvised measuring devices were also fabricated to determine the purity of the di
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Barbas, Carlos F. "Organocatalysis Lost: Modern Chemistry, Ancient Chemistry, and an Unseen Biosynthetic Apparatus." Angewandte Chemie International Edition 47, no. 1 (2008): 42–47. http://dx.doi.org/10.1002/anie.200702210.

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Pascal Nsanzimana, Celestin Ngendabanga, and Jean Baptiste Nkurunziza. "Investigation of constraints faced by teaching and learning of chemistry in Nyarugenge district secondary schools: Quest for quality improvement." GSC Biological and Pharmaceutical Sciences 16, no. 2 (2021): 110–21. http://dx.doi.org/10.30574/gscbps.2021.16.2.0222.

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The present study investigated constraints faced by chemistry teaching and learning. It also suggested possible solutions for addressing the identified constraints. A total sample of 138 respondents including 125 students in chemistry combinations, 10 chemistry teachers and 3 directors of study were chosen purposefully to participate in this study. A qualitative research method using case study design was employed to gather necessary data. Content and thematic analysis methods were used to analyze the data. The results revealed that abstract nature of some chemistry concepts, lack of laborator
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Pascal, Nsanzimana, Ngendabanga Celestin, and Baptiste Nkurunziza Jean. "Investigation of constraints faced by teaching and learning of chemistry in Nyarugenge district secondary schools: Quest for quality improvement." GSC Biological and Pharmaceutical Sciences 16, no. 2 (2021): 110–21. https://doi.org/10.5281/zenodo.5267064.

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The present study investigated constraints faced by chemistry teaching and learning. It also suggested possible solutions for addressing the identified constraints. A total sample of 138 respondents including 125 students in chemistry combinations, 10 chemistry teachers and 3 directors of study were chosen purposefully to participate in this study. A qualitative research method using case study design was employed to gather necessary data. Content and thematic analysis methods were used to analyze the data. The results revealed that abstract nature of some chemistry concepts, lack of laborator
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Shorter, Jeffrey A., Warren J. De Bruyn, Jainhong Hu, et al. "Bubble Column Apparatus for Gas-Liquid Heterogeneous Chemistry Studies." Environmental Science & Technology 29, no. 5 (1995): 1171–78. http://dx.doi.org/10.1021/es00005a006.

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Schädel, M., W. Brüchle, and B. Haefner. "Fast radiochemical separations with an automated rapid chemistry apparatus." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 264, no. 2-3 (1988): 308–18. http://dx.doi.org/10.1016/0168-9002(88)90920-5.

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Shorter, J. "Bubble column apparatus for gas-liquid heterogeneous chemistry studies." International Journal of Multiphase Flow 22 (December 1996): 107. http://dx.doi.org/10.1016/s0301-9322(97)88243-2.

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Zhang, Cui‐mei, Zhi‐guo Zhang, Cun‐shun Huang, Qun Zhang, and Yang Chen. "Helium Droplets: An Apparatus to Study Ultra Cold Chemistry." Chinese Journal of Chemical Physics 26, no. 3 (2013): 270–76. http://dx.doi.org/10.1063/1674-0068/26/03/270-276.

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Rostianingsih, Silvia, Alexander Setiawan, and Christopher Imantaka Halim. "COCO (Creating Common Object in Context) Dataset for Chemistry Apparatus." Procedia Computer Science 171 (2020): 2445–52. http://dx.doi.org/10.1016/j.procs.2020.04.264.

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Karak, Milandip, Yohei Joh, Khamid U. Khodjaniyazov, Shamansur S. Sagdullaev, Tohru Oishi, and Kohei Torikai. "Simple Apparatus for Adding Small Amounts of Powder Materials under an Inert Atmosphere." Synlett 30, no. 18 (2019): 2058–61. http://dx.doi.org/10.1055/s-0039-1690689.

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Addition of reactants under an inert atmosphere is a fundamental but extremely important technique in synthetic chemistry. Although this is achievable in many cases by using a glove box or a Schlenk-and-syringe technique, the direct addition of powder (solid) materials without contamination by air or moisture has been difficult, especially in the later stages of a reaction. Here, we offer a simple and small apparatus to realize powder addition with easy handling. Use of this apparatus permitted one-pot glycosylation reactions that required extremely dry conditions to be performed in a highly r
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Dissertations / Theses on the topic "Chemistry-apparatus"

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Kuhn, Jay C. "Experimental design for the study of extraction efficiencies of the continuous liquid-liquid extractor." Master's thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-01202010-020253/.

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Brown, Frank Reber. "Analytical applications of flow injection analysis." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184254.

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The rate of oxidation of copper metal to copper (I) by copper (II) in the presence of organic ligands has been determined for a variety of ligands using a flow injection analysis system to sample the reaction. The results obtained using the FIA sampling method compare favorably with those obtained in eariler work when allyl alcohol was used as the ligand. The mechanism proposed in that earlier work has been shown to be a general mechanism for the oxidation of copper metal in the presence of complexing ligands. It was found that some ligands increase the rate of the reaction beyond the ability
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Carroll, Natalie R. Sohlberg Karl William Dr. "Theoretical descriptions of electron transport through single molecules: developing design tools for molecular electronic devices /." Philadelphia, Pa. : Drexel University, 2004. http://dspace.library.drexel.edu/handle/1860/330.

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Yang, Liu. "Quantum chemistry studies of molecular electronic devices from electronic structure to current flow /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 156 p, 2010. http://proquest.umi.com/pqdweb?did=1997524081&sid=7&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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Sherman, Kristin Mary Daniels. "Affordances of Instrumentation in General Chemistry Laboratories." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc30510/.

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The purpose of this study is to find out what students in the first chemistry course at the undergraduate level (general chemistry for science majors) know about the affordances of instrumentation used in the general chemistry laboratory and how their knowledge develops over time. Overall, students see the PASCO™ system as a useful and accurate measuring tool for general chemistry labs. They see the probeware as easy to use, portable, and able to interact with computers. Students find that the PASCO™ probeware system is useful in their general chemistry labs, more advanced chemistry labs, and
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Wang, Dong. "Making dimers of light-harvesting complexes from purple bacteria using copper–free click chemistry." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0062/document.

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Les complexes collecteurs de lumière des bactéries photosynthétiques absorbent l'énergie solaire, et transfèrent l'énergie avec grande efficacité aux centres réactionnels, siùge où elle est captée pour l'utilisation par la cellule. Nous savons peu des détails du transfert d'énergie entre les différents complexes collecteurs de lumière. Dans cette thèse, j'ai isolé différents complexes collecteurs de lumière à partir de plusieurs souches de bactéries pourpres. J'ai construit de modèles 3D par homologie et les structures possibles de dimères ont également été examinés. Les sites de pontage dans
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Klein, Ethan Avram. "A buffer gas cooled molecular beam apparatus for chirped pulse millimeter wave spectroscopy." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98781.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Chemistry, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 34-36).<br>An apparatus that utilizes buffer gas cooling to produce slow atomic (Ba, Ca) and molecular (BaF, CaF) beams is constructed. In-cell temperatures of 20 ± 0.25K are achieved with chamber cooldown times of under two hours. Laser Induced Fluorescence (LIF) spectra of BaF and CaF confirmed thermalization of the molecular beam to the temperature of the buffer gas and additional hydrodynamic cooling to rotational and tra
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Tate, Paul. "Ammonia Sampling using Ogawa® Passive Samplers." Scholar Commons, 2002. http://purl.fcla.edu/fcla/etd/SFE0000021.

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Patterson, Hazelyn. "The design and construction of an apparatus for low-temperature dimerization of aliphatic free radicals." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 1997. http://digitalcommons.auctr.edu/dissertations/2805.

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This study documents an effort to design and construct an apparatus for the continuous generation hydrogen atoms to convert aliphatic and aromatic molecules to their respective dimers, by free radical mechanisms. The addition of hydrogen atoms to alkene and aromatic molecules, and hydrogen atom abstraction from alkanes by atomic hydrogen, followed by dimerization or disproportionation has been extensively studied. Emphasis here is placed on proving the efficacy of this device by production of known dimeric products. This prototype incorporates critical factors known to effect gas phase free ra
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Lui, Siu Man. "Physical characterization and mechanistic studies of the [Fe4S4]-siroheme catalytic apparatus in sulfite and nitrite reductase enzymes /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487853913101079.

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Books on the topic "Chemistry-apparatus"

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Lawrence, Holmes Frederic, and Levere Trevor Harvey, eds. Instruments and experimentation in the history of chemistry. MIT Press, 2000.

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1931-, Rossiter Bryant W., Hamilton John F, and Baetzold Roger C, eds. Physical methods of chemistry. 2nd ed. Wiley, 1986.

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Maximilian, Lackner, ed. Lasers in chemistry. Wiley-VCH, 2008.

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Luyben, William L. Reactive distillation design and control. John Wiley, 2008.

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1911-, Stock John T., Orna Mary Virginia, and American Chemical Society. Division of the History of Chemistry., eds. The History and preservation of chemical instrumentation: Proceedings of the ACS Division of the History of Chemistry symposium held in Chicago, Ill., September 9-10, 1985. D. Reidel Pub. Co., 1986.

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Mavrodineanu, Radu. Summary of the biological and botanical standards issued by the National Bureau of Standards. U.S. Dept. of Commerce, National Bureau of Standards, 1985.

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Mavrodineanu, Radu. Summary of the biological and botanical standards issued by the National Bureau of Standards. U.S. Dept. of Commerce, National Bureau of Standards, 1985.

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Mavrodineanu, Radu. Summary of the biological and botanical standards issued by the National Bureau of Standards. U.S. Dept. of Commerce, National Bureau of Standards, 1985.

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Max-Planck-Institut. Reactive distillation: Status and future directions. Wiley-VCH, 2003.

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L, Stanitski Conrad, ed. Laboratory handbook for general chemistry. 3rd ed. Thomson Brooks/Cole, 2007.

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Book chapters on the topic "Chemistry-apparatus"

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Marquette, J. B. "Ion-Molecule Reactions at Dense Interstellar Cloud Temperatures: The Cresus Apparatus." In Chemistry in Space. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-009-0695-2_23.

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Gruppe, Axel, Simon Cerny, Kurt Ernst Stiebing, et al. "100 Years Molecular Beam Method Reproduction of Otto Stern’s Atomic Beam Velocity Measurement." In Molecular Beams in Physics and Chemistry. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63963-1_9.

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AbstractThe history of Otto Stern’s pioneering measurement of the Maxwell-Boltzmann velocity distribution of a Silver atomic beam performed 1919 in Frankfurt is described. It is shown how Albert Einstein influenced Stern in his research. This experimental apparatus is not any more existing; therefore it was reconstructed in the workshops of the Physics faculty of the Goethe University in Frankfurt. The experimental verification of Stern’s results was finally achieved by a team of Frankfurt high school students (Gymnasium Riedberg) under the supervision of their teachers Axel Gruppe and Simon C
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Burgot, Gwenola, and Jean-Louis Burgot. "Infrared Spectroscopy (II) Apparatus, Qualitative and Quantitative Analysis MID, Infrared Reflection and Near-Infrared Spectrometries." In General Analytical Chemistry. CRC Press, 2023. http://dx.doi.org/10.1201/9781003189688-33.

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Timko, Michael P., Lydia Herdies, Eleonor de Almeida, Anthony R. Cashmore, Jan Leemans, and Enno Krebbers. "Genetic Engineering of Nuclear-Encoded Components of the Photosynthetic Apparatus inArabidopsis." In The Impact of Chemistry on Biotechnology. American Chemical Society, 1988. http://dx.doi.org/10.1021/bk-1988-0362.ch023.

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Schöllkopf, Wieland. "Grating Diffraction of Molecular Beams: Present Day Implementations of Otto Stern’s Concept." In Molecular Beams in Physics and Chemistry. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63963-1_25.

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AbstractWhen Otto Stern embarked on molecular-beam experiments in his new lab at Hamburg University a century ago, one of his interests was to demonstrate the wave-nature of atoms and molecules that had been predicted shortly before by Louis de Broglie. As the effects of diffraction and interference provide conclusive evidence for wave-type behavior, Otto Stern and his coworkers conceived two matter-wave diffraction experiments employing their innovative molecular-beam method. The first concept assumed the molecular ray to coherently scatter off a plane ruled grating at grazing incidence condi
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Kent, Stephen B. H. "Chapter 2: Chemistry of enzyme catalysis." In Inventing Synthetic Methods to Discover How Enzymes Work. GNT-Verlag GmbH, 2022. http://dx.doi.org/10.47261/1549-2.

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Raven, John A., Andrew M. Johnston, and Misni bin Surif. "The Photosynthetic Apparatus As A Phyletic Character." In The Chromophyte Algae. Oxford University PressOxford, 1990. http://dx.doi.org/10.1093/oso/9780198577133.003.0004.

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Abstract The characteristics of the photosynthetic apparatus (other than the chemistry of the pigments which is dealt with elsewhere in this Symposium) are considered under three headings. In each case comparisons are made both within the chromophytes, and between chromophytes and other major groups.
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"APPENDIX. Names, Substances, and Apparatus in Eighteenth- Century Chemistry." In Antoine Lavoisier: The Next Crucial Year. Princeton University Press, 1997. http://dx.doi.org/10.1515/9781400864652.153.

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Steinberg, Michael. "Edward Elger." In The Symphony. Oxford University PressNew York, NY, 1995. http://dx.doi.org/10.1093/oso/9780195061772.003.0007.

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Abstract Whose is the voice that speaks in these symphonies? Reviewing Michael Kennedy ‘s Portrait of Elgar, David Cairns sketches a hypersensitive, touchy, moody, at times almost suicidally unhappy genius with small, nervous hands: an English eccentric who loved fishing, Bradshaw,1 dogs, recondite information, and bonfires, who practised chemistry and patented the Elgar Sulphuretted Hydrogen Apparatus, and who nursed within him a wound that never healed.
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Brock, William H. "3. Gases and atoms." In The History of Chemistry: A Very Short Introduction. Oxford University Press, 2016. http://dx.doi.org/10.1093/actrade/9780198716488.003.0004.

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Until the mid-18th century, chemists had no understanding of the role of air in chemical changes. The Chemical Revolution was not merely conceptual, but also instrumental in that it involved the practical ability to manipulate, weigh, and measure gases using accurate balances, glass apparatus, and eudiometers. The chemist who transformed our views of elements, composition, and reorganized the way that chemists communicated was the French civil servant Antoine Lavoisier (1743–94). ‘Gases and atoms’ outlines Lavoisier’s work on chemistry nomenclature along with the key chemical discoveries by Jo
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Conference papers on the topic "Chemistry-apparatus"

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Ieamsupapong, Supat, Bruce Brown, Marc Singer, and Srdjan Nesic. "Effect of Solution pH on Corrosion Product Layer Formation in a Controlled Water Chemistry System." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-09160.

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Abstract The primary objective of this study was to investigate iron carbonate (FeCO3) formation mechanisms on ferritic-pearlitic carbon steel corroding in a CO2 saturated aqueous solution near iron carbonate saturation, with particular emphasis on the effect of solution pH. A controlled water chemistry test apparatus was developed to resolve issues with drifting water chemistry during long-term corrosion experiments. An improved test apparatus for holding the metal samples was also introduced to eliminate the non-uniformity of flow across the samples and assure well controlled mass transfer c
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Lumsden, J. B., P. J. Stocker, G. A. Pollock, and P. J. Millett. "Heated Crevice Investigation of the Effects of Feedwater Chemistry on Crevice Chemistry and Crevice Potential." In CORROSION 1996. NACE International, 1996. https://doi.org/10.5006/c1996-96111.

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Abstract A device has been constructed which mimics the geometry and operating conditions of a tube/tube support plate crevice in a pressurized water reactor (PWR) steam generator. This apparatus is instrumented to measure the tube wall temperature in the crevice, the free span and crevice potentials, and the crevice chemistry. Results have been obtained for 280°C NaOH solutions continuously pumped through the autoclave under several crevice temperature and power levels. Changes in tube wall temperature changes after superheat was applied indicated that various depths in the crevice underwent
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Kassen, W. R., R. P. Jones, and J. L. Tollefson. "The Impact of Hydrogen Water Chemistry at the Monticello BWR." In CORROSION 1992. NACE International, 1992. https://doi.org/10.5006/c1992-92112.

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Abstract In addition to controlling the intergranular stress corrosion cracking (IGSCC) of the recirculation piping of a boiling water reactor (BWR), hydrogen water chemistry (HWC) has been shown to offer protection of IGSCC-susceptible reactor internals and vessel attachments in selected regions. The Monticello BWR Nuclear Generating Plant of the Northern States Power Company recently began measuring the degree of protection provided by HWC to those components in the lower plenum region of their reactor vessel. To this end, during Monticello’s spring 1991 refueling outage, an electrochemical
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Li, Chong, Sonja Richter, and Srdjan Nesic. "How Do Inhibitors Mitigate Corrosion in Oil-Water Two Phase Flow beyond Lowering the Corrosion Rate?" In CORROSION 2013. NACE International, 2013. https://doi.org/10.5006/c2013-02391.

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Abstract Corrosion inhibitors are commonly used to mitigate corrosion in oil and gas pipelines and the choice of inhibitor for a particular oil field depends on the conditions of the field (oil chemistry, water chemistry, temperature, etc.). In order to find the optimum formulation for each field condition, extensive laboratory tests are carried out which include corrosion inhibitor performance, foaming, and emulsification, to name a few. When it comes to measuring the inhibition efficiency of the corrosion inhibitor formulation, the focus is on the inhibition from the water phase. However, co
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Achour, M., D. Blumer, T. Baugh, et al. "A Novel Method to Mitigate Top of the Line Corrosion in Wet Gas Pipelines: Part I - Proof of Concept." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11332.

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Abstract Conventional injection methods for delivery of corrosion inhibitors in wet gas pipelines are incapable of providing consistent inhibitor coverage for the entire inside pipe wall, if the flow dynamics are not favorable. Such limitation becomes particularly crucial where Top of the Line Corrosion (TLC) is an issue due to water condensation at the 12 o’clock position, in particular in the presence of volatile organic acids. Currently the most common inhibitor delivery methods rely on periodic pigging or batch treatment to control TLC. Such methods can be expensive and at times unavailabl
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Alrayees, Abdulaziz, Sonja Richter, Marijan Babic, and Ramsey White. "Water Wetting Study on Crude Oil Utilizing Model Oil Blend." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05438.

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Abstract As oil fields mature, operating costs associated with internal corrosion of oil transport pipelines are increasing. Beside aging infrastructure, this trend is caused by decreasing oil production and increasing co-production of water. Even if water is heavier than oil, it can be entrained in the oil phase if the flow of oil is sufficient for the turbulent forces to overcome the density difference. Determining the minimum velocity for which this is possible (the entrainment velocity) is an important factor for establishing good corrosion management strategies. To determine this velocity
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Wolodko, John, Victor Jaimes, Kirill Alemaskin, Michael Lipsett, and Kofi Freeman Adane. "Development of a Novel Testing Method for Characterizing Wet Sliding Abrasion in Slurry Transport Systems." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-13458.

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Abstract Slurry pipelines are critical systems used in oil sands mining operations to efficiently transport ore from the mine site to centralized extraction facilities. One of the main challenges in designing these systems is the screening and selection of optimal pipeline materials. Slurry pipelines in oil sands mining (hydro-transport and tailing lines) are subjected to aggressive abrasion and erosion-corrosion conditions resulting in relatively rapid material wear rates. For some operations, the degradation of these pipelines can result in significant maintenance and replacement costs. To a
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Conde, Adele, Roland Hellmann, F. Marc Michel, and Nicolas Perdrial. "EFFECTS OF CRYSTAL CHEMISTRY, HABITUS, AND EXPERIMENT APPARATUS ON APATITE DISSOLUTION ACROSS SCALES." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-322593.

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Albiol Chiva, Jaume, Juan Peris Vicente, María José Ruiz Ángel, et al. "Implementation of Computer Assisted Experimental Work in Analytical Chemistry Laboratory Teaching." In Fifth International Conference on Higher Education Advances. Universitat Politècnica València, 2019. http://dx.doi.org/10.4995/head19.2019.9161.

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Computer-Assisted Experimental Work (CAEW) consists in the incorporation of computer-connected apparatus in the laboratory. This is a new insight into teaching of Classical Analytical Chemistry, wherein the experiments are usually manually conducted. However, it does not represent a complete break with traditional methodology, as the design and goal of the experiment are essentially the same. In this work, we present the implementation of CAEW to a practical included in the Laboratory part of “Analytical Chemistry IV”, taught at the fourth academic year of the Degree in Chemistry: “Potentiomet
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Onabe, Fumihiko, and Kunio Sakurai. "Applications of Flow Visualization Technique in Wet End Chemistry." In Fundamentals of Papermaking, edited by C. F. Baker and V. Punton. Fundamental Research Committee (FRC), Manchester, 1989. http://dx.doi.org/10.15376/frc.1989.1.219.

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A microcomputer–aided flow visualization system consisting of Strobovision analyzer(SVA) and image processing apparatus was applied to the analysis of the effect of a variety of parameters in wet end chemistry on the flocculation behavior of model stock systems. These are (a)single polymer addition systems and dual component additive systems,(b)low and high filler content suspensions,and (c)colloidal force and hydrodynamic shear force. Analysis by digital geometry was carried out to represent features of projected images of flocs and fiber network supporting flocs. The flocculation states were
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Reports on the topic "Chemistry-apparatus"

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Lyman, J., H. Fry, D. Breshears, and J. Romero. Detonation chemistry apparatus experiments with nonreactive liquids, reactive liquids, and a reactive solid. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/244544.

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