Bibliografie tematiche / Secondary precipitation

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Letteratura scientifica selezionata sul tema "Secondary precipitation"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 8 giugno 2024

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Articoli di riviste sul tema "Secondary precipitation"

Gu, Yi Jie, Yong Hu, Hong Quan Liu, Heng Hui Zhou, Zhen Guo, and Zu Wang Hu. "Synthesis the Precursor of LiNi_0.5Mn_0.5O₂ via an Improved Carbonate Co-Precipitation." Advanced Materials Research 233-235 (May 2011): 32–35. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.32.

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Spherical Ni0.5Mn0.5CO3 is synthesized via carbonate co-precipitation method which uses NH4HCO3 as the precipitator. However, obvious agglomerate of secondary particles occurs when NH4HCO3 is used as the precipitator. The agglomerate particles can result in inferior physical characteristic. An improved carbonate co-precipitation which used NH4HCO3 doped with different proportion of NaOH as a new precipitator is tested in our study. Observed by SEM and Mastersizer, spherical morphology with narrow particle size distribution is synthesized with the proportion of NaOH reaches 10%. The element lin

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Wysocka, Izabela. "Wastewater parameters after the process of phosphorus compounds removal by the metal dissolution method in comparison with precipitation and electrocoagulation methods." Ochrona Srodowiska i Zasobów Naturalnych 28, no. 1 (March 1, 2017): 8–13. http://dx.doi.org/10.1515/oszn-2017-0001.

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Abstract Precipitation methods are commonly used for removing phosphorus compounds from wastewater. Chemical precipitation method, based on adding iron, aluminium or calcium salts to the treated wastewater, is often used. Another possible way of precipitating phosphates is metal dissolution method, which is presented in this paper. The main difference between these two methods is how the phosphate precipitating ions are introduced to the wastewater. This paper discusses advantages and disadvantages of the metal dissolution method in comparison with traditional precipitation methods. Difference

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Yang, Song, Kwo-Sen Kuo, and Eric A. Smith. "Persistent Nature of Secondary Diurnal Modes of Precipitation over Oceanic and Continental Regimes." Journal of Climate 21, no. 16 (August 15, 2008): 4115–31. http://dx.doi.org/10.1175/2008jcli2140.1.

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Abstract This investigation seeks a better understanding of the assorted mechanisms controlling the global distribution of diurnal precipitation variability based on the use of the Tropical Rainfall Measuring Mission (TRMM) microwave radiometer and radar data. The horizontal distributions of precipitation’s diurnal cycle are derived from 8 yr of TRMM Microwave Imager (TMI) and Precipitation Radar (PR) measurements involving three TRMM standard rain retrieval algorithms; the resultant distributions are analyzed at various spatiotemporal scales. The results reveal both the prominent and expected

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Shin, Byung-Hyun, Dohyung Kim, Sanghyup Park, Myungwon Hwang, Junghyun Park, and Wonsub Chung. "Precipitation condition and effect of volume fraction on corrosion properties of secondary phase on casted super-duplex stainless steel UNS S32750." Anti-Corrosion Methods and Materials 66, no. 1 (January 7, 2019): 61–66. http://dx.doi.org/10.1108/acmm-06-2018-1958.

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Purpose The secondary phase decreased the corrosion resistance because of the segregation of Cr and Mo. Therefore, this paper aims to study the precipitation condition and the effect of secondary phase with volume fraction on corrosion behavior. Design/methodology/approach Secondary phase precipitated approximately from 375°C to 975°C because of saturated Cr and Mo at grain boundary by growth of austenite. Therefore, heat treatment from 800°C to 1,300°C was applied to start the precipitation of the secondary phase. Findings The secondary phase is precipitated at 1,020°C because of segregation

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Ryu, Young-Hee, Seung-Ki Min, and Christoph Knote. "Role of Upwind Precipitation in Transboundary Pollution and Secondary Aerosol Formation: A Case Study during the KORUS-AQ Field Campaign." Journal of Applied Meteorology and Climatology 61, no. 2 (February 2022): 159–74. http://dx.doi.org/10.1175/jamc-d-21-0162.1.

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Abstract Clouds and precipitation play critical roles in wet removal of aerosols and soluble gases in the atmosphere, and hence their accurate prediction largely influences accurate prediction of air pollutants. In this study, the impacts of clouds and precipitation on wet scavenging and long-range transboundary transport of pollutants are examined during the 2016 Korea–United States Air Quality (KORUS-AQ) field campaign using the Weather Research and Forecasting Model coupled with chemistry. Two simulations—one in which atmospheric moisture is constrained and one in which it is not—are perfor

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Lumley, R. N., I. J. Polmear, and A. J. Morton. "Interrupted aging and secondary precipitation in aluminium alloys." Materials Science and Technology 19, no. 11 (November 2003): 1483–90. http://dx.doi.org/10.1179/026708303225008112.

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Yang, F. M., X. F. Sun, W. Zhang, Y. P. Kang, H. R. Guan, and Z. Q. Hu. "Secondary M6C precipitation in K40S cobalt-base alloy." Materials Letters 49, no. 3-4 (June 2001): 160–64. http://dx.doi.org/10.1016/s0167-577x(00)00361-x.

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Macchi, C. E., A. Somoza, A. Dupasquier, and I. J. Polmear. "Secondary precipitation in Al–Zn–Mg–(Ag) alloys." Acta Materialia 51, no. 17 (October 2003): 5151–58. http://dx.doi.org/10.1016/s1359-6454(03)00364-1.

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Li, Y. H., J. D. Fambrough, and C. T. Montgomery. "Mathematical Modeling of Secondary Precipitation From Sandstone Acidizing." SPE Journal 3, no. 04 (December 1, 1998): 393–401. http://dx.doi.org/10.2118/53001-pa.

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Holba, V. "Secondary structure of periodic precipitation patterns in gelatin." Colloid & Polymer Science 267, no. 5 (May 1989): 456–59. http://dx.doi.org/10.1007/bf01410193.

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Tesi sul tema "Secondary precipitation"

Rey, Tomas. "Investigation of Microstructure and Mechanical Properties in Hot-work Tool Steels." Thesis, KTH, Materialvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210699.

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Hot-work tool steels make up an important group of steels that are able to perform with good strength and toughness properties at elevated temperatures and stresses. They are able to gain this behavior through their alloy composition and heat treatment, which relies on the precipitation of alloy carbides to counter the loss in strength as the tempered material becomes more ductile. As demand grows for materials that are suitable for even harsher applications and that show improved mechanical qualities, the steel industry must continuously investigate the development of new steel grades. Within

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Cardoso, Jorge Luiz. "Evaluation of the precipitation of secondary phases on CO2 environment corrosion resistance of austenitic and super austenitic stainless steels." reponame:Repositório Institucional da UFC, 2016. http://www.repositorio.ufc.br/handle/riufc/18440.

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CARDOSO, J. L. Evaluation of the precipitation of secondary phases on CO2 environment corrosion resistance of austenitic and super austenitic stainless steels. 2016. 133 f. Tese (Doutorado em Ciência de Materiais) – Centro de Tecnologia, Universidade Federal do Ceará, Fortaleza, 2016.<br>Submitted by Hohana Sanders (hohanasanders@hotmail.com) on 2016-07-15T13:48:21Z No. of bitstreams: 1 2016_tese_jlcardoso.pdf: 8753874 bytes, checksum: a423033a537ecd65f676406b27740c08 (MD5)<br>Approved for entry into archive by Marlene Sousa (mmarlene@ufc.br) on 2016-07-18T13:49:21Z (GMT) No. of bitstreams: 1

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Gudbrandsson, Snorri. "Experimental weathering rates of aluminium-silicates." Toulouse 3, 2013. http://thesesups.ups-tlse.fr/2225/.

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L'altération chimique des roches primaires et des minéraux dans les systèmes naturels a un impact majeur sur la formation des sols et leur composition. L'altération chimique est largement pilotée par la dissolution des minéraux. Les éléments chimiques libérés dans les eaux souterraines par la dissolution des minéraux réagissent facilement pour former des minéraux secondaires comme les argiles, zéolites et carbonates. Les carbonates se forment par réaction des cations divalents (Ca, Fe et Mg) avec CO2 dissous tandis que la formation des kaolins et de la gibbsite est attribuée à l'altération des

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Lloyd, Gary James. "Observations of the origin and distribution of primary and secondary ice in clouds." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/observations-of-the-origin-and-distribution-of-primary-and-secondary-ice-in-clouds(fbe41932-ddf0-49c2-b634-89575e919037).html.

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A detailed understanding of cloud microphysical processes is crucial for a large range of scientific disciplines that require knowledge of cloud particles for accurate climate and weather prediction. This thesis focuses on 3 measurement campaigns, encompassing both airborne and ground based measurements of the microphysical structures observed in cold, warm and occluded frontal systems around the United Kingdom, stratocumulus clouds in the Arctic and many different clouds observed over a 6 week period at a high-alpine site in the Swiss Alps. Particular attention was paid to the origin and dist

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Jubica, Jubica. "Characterization of Secondary Carbides in Low-Alloyed Martensitic Model Alloy Tool Steels." Thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-284449.

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The development of tool steels for making and shaping other materials requires a better understanding of the material's properties during manufacture. These high-quality steels include many alloying elements, which give increased hardness during tempering. For producing hardened microstructures, austenite generation is essential. The martensite formed by rapid quenching of austenite followed by tempering helps develop high strength steels. Studying carbide precipitation is a challenge as they are very small in size, present only in small volume fractions and high number densities. The carbide

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Buha, Joka School of Materials Science &amp engineering UNSW. "Interrupted ageing of Al-Mg-Si-Cu alloys." Awarded by:University of New South Wales. School of Materials Science and engineering, 2005. http://handle.unsw.edu.au/1959.4/20794.

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This thesis systematically investigates the effects of a recently developed modified ageing procedure of aluminium alloys, termed the T6I6 temper, on the microstructural development and mechanical properties of the Al ??? Mg ??? Si - Cu alloy 6061. For the T6I6 temper, a conventional single stage T6 temper is interrupted by an ageing period at a reduced temperature (65??C) to facilitate secondary precipitation, before resuming the final ageing at the temperature of the initial T6 treatment. The T6I6 temper was found to cause simultaneous increases in tensile properties, hardness, and toughness

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Maminska, Karolina. "Optimisation microstructurale d’un acier HP pour des applications à haute température." Thesis, Saint-Etienne, EMSE, 2013. http://www.theses.fr/2013EMSE0696/document.

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L’objectif de ce travail est d’améliorer la durée de vie en fluage d’un alliage résistant à haute température. L’alliage étudié, nommé « C », appartient à la classe des aciers austénitiques de type HP utilisés pour la fabrication des tubes de reformage. L’évolution microstructurale de l’alliage « C » a été étudiée dans une vaste gamme de températures, s’étendant de 700 à 1040°C pour des temps de vieillissement allant jusqu’à 1000 h. La caractérisation de ces états vieillis a été réalisée au moyen de la microscopie électronique (MEB-FEG, MET) et de la diffraction des rayons X. L’accent a été mi

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Jacumasso, Sheila Cristina. "CARACTERIZAÇÃO MICROESTRUTURAL DAS PARTÍCULAS DE SEGUNDA FASE DE UMA LIGA DE ALUMÍNIO AA7050 NAS CONDIÇÕES T7451, T6 E T6I4-65." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2014. http://tede2.uepg.br/jspui/handle/prefix/1460.

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Made available in DSpace on 2017-07-21T20:43:44Z (GMT). No. of bitstreams: 1 Sheila Cristina Jacumasso.pdf: 3640428 bytes, checksum: 9f48682e159a5b7129a15abc7bb73945 (MD5) Previous issue date: 2014-06-02<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The AA7050 class from the 7XXX series alloys based on Al-Zn-Mg-Cu are widely used in aerospace structures and fuselage components, when the same are subjected to high stress loading due to its high ratio mechanical strength to density, in addition, to its corrosion resistance. The increased resistance of these alloys is obtain

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Gudbrandsson, Snorri. "Vitesses d'altération expérimentales des silicates d'aluminium." Phd thesis, Université Paul Sabatier - Toulouse III, 2013. http://tel.archives-ouvertes.fr/tel-00933440.

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Hendricks, Nicolette Rebecca. "The application of high capacity ion exchange adsorbent material, synthesized from fly ash and acid mine drainage, for the removal of heavy and trace metal from secondary Co-disposal process waters." Thesis, University of the Western Cape, 2005. http://hdl.handle.net/11394/1455.

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In South Africa, being the second largest global coal exporter, coal mining plays a pivotal role in the growth of our economy, as well as supplying our nation’s ever increasing electricity needs; while also accounting for more than 10% of the 20 x 109 m3 water used annually in the country. Coal mining may thus be classified as a large-scale water user; known to inevitably generate wastewater [acid mine drainage (AMD)] and other waste material, including fly ash (FA). Current and conventional AMD treatment technologies include precipitation–aggregation (coagulation/flocculation) – settling as h

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Più fonti

Libri sul tema "Secondary precipitation"

Database Basics: Skills Book (Teach With Database Series). Natl Science Teachers Assn, 1998.

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O’Brien, Alastair. Management of acute or chronic hepatic failure in the critically ill. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0200.

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Acute on chronic liver failure is characterized by an acute deterioration of liver function in a patient with previously compensated cirrhosis secondary to a precipitating event. It is most commonly associated with a very poor prognosis and early identification of the precipitating cause is essential to successfully attempt to reverse decompensation. The most common precipitant is infection and a high index of suspicion is required. Other management is largely supportive with close attention to renal dysfunction being particularly important. All patients admitted to the intensive care unit wit

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Gao, Yanhong, and Deliang Chen. Modeling of Regional Climate over the Tibetan Plateau. Oxford University Press, 2017. http://dx.doi.org/10.1093/acrefore/9780190228620.013.591.

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The modeling of climate over the Tibetan Plateau (TP) started with the introduction of Global Climate Models (GCMs) in the 1950s. Since then, GCMs have been developed to simulate atmospheric dynamics and eventually the climate system. As the highest and widest international plateau, the strong orographic forcing caused by the TP and its impact on general circulation rather than regional climate was initially the focus. Later, with growing awareness of the incapability of GCMs to depict regional or local-scale atmospheric processes over the heterogeneous ground, coupled with the importance of t

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Karon, Barry L., and Naveen L. Pereira. Heart Failure and Cardiomyopathies. Oxford University Press, 2012. http://dx.doi.org/10.1093/med/9780199755691.003.0046.

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Heart failure is a clinical syndrome characterized by the inability of the heart to maintain adequate cardiac output to meet the metabolic demands of the body while still maintaining normal or near-normal ventricular filling pressures. Heart failure may be present at rest, but often it is present only during exertion as a result of the dynamic nature of cardiac demands. For correct treatment of heart failure, the mechanism, underlying cause, and any reversible precipitating factors must be identified. Typical manifestations of heart failure are dyspnea and fatigue that limit activity tolerance

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Capitoli di libri sul tema "Secondary precipitation"

Rodriguez-Clemente, R., and A. Hidalgo-Lopez. "Physical Conditions in Alunite Precipitation as a Secondary Mineral." In The Chemistry of Weathering, 121–41. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5333-8_8.

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Kommu, Rajesh, Subrahmanya Kundapura, and Venkatesh Kolluru. "A Statistical Approach for Comparison of Secondary Precipitation Products." In Lecture Notes in Civil Engineering, 753–63. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6828-2_55.

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Yong, Qilong, Xinjun Sun, Gengwei Yang, and Zhengyan Zhang. "Solution and Precipitation of Secondary Phase in Steels: Phenomenon, Theory and Practice." In Advanced Steels, 109–17. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17665-4_14.

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Lumley, Roger N., J. Buha, Ian J. Polmear, A. J. Morton, and A. G. Crosky. "Secondary Precipitation in Aluminium Alloys & Its Role in Modern Heat Treatment." In Materials Science Forum, 283–90. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-408-1.283.

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Jaeger, Beate Roxane, P. Marx, T. Pfefferkorn, G. Hamann, and D. Seidel. "Heparin-Mediated Extracorporeal LDL/Fibrinogen Precipitation —H.E.L.P.-In Coronary and Cerebral Ischemia." In Current Progress in the Understanding of Secondary Brain Damage from Trauma and Ischemia, 81–84. Vienna: Springer Vienna, 1999. http://dx.doi.org/10.1007/978-3-7091-6391-7_13.

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Guerra, F. V., A. Bedolla-Jacuinde, I. Mejı́a, J. Zuno-Silva, and E. Cardoso-Legorreta. "Effect of Copper Additions on Secondary Carbide Precipitation in High Chromium with Cast Iron." In Characterization of Metals and Alloys, 61–81. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31694-9_6.

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Yong, Qilong, Xinjun Sun, Zhaodong Li, Zhenqiang Wang, and Ke Zhang. "Physical Metallurgical Principles of Titanium Microalloyed Steel—Dissolution and Precipitation of Titanium-Bearing Secondary Phases." In Titanium Microalloyed Steel: Fundamentals, Technology, and Products, 71–139. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3332-3_3.

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Wang, Huisheng, Qing Liu, Biao Tao, Jun Wu, Ming Li, Min Guan, and Weili Huang. "Study on Secondary Phase Precipitation Behavior of Ship Plate Steel Slab Under Different Cooling Rates in Continuous Casting Process." In The Minerals, Metals & Materials Series, 1104–16. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-50349-8_96.

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Mukwada, Geofrey, and Sarudzai Mutana. "Surviving the Limits Imposed by a Changing Climate: The Case of Urban Drought and Water Supply Sustainability in Phuthaditjhaba." In Sustainable Development Goals Series, 75–89. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-15773-8_6.

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AbstractIn urban environments, sustainable access to water resources depends on many factors, including climatic, social and economic conditions characterizing the surrounding environment. For urban areas in mountain environments these conditions are compounded by stressors resulting from climate change, such as drought, as well as physical remoteness, economic marginalization and poverty, phenomena which impose limits on access to water. Based on Sustainable Development Goals (SDGs) 1, 6 and 13, which were part of the 2030 Agenda for Sustainable Development adopted by UN member states in 2015, in this paper we assess the impact of urban drought on water security in the mountain city of Phuthaditjhaba, South Africa. World Meteorological Organization - Time Series (4.04) climate (precipitation and maximum temperature) data for Phuthaditjhaba were analysed for trends for the period between 1960 and 2019. Trends of Standardized Precipitation Index values and Maximum Temperatures were used to determine how climate change has affected Phuthaditjhaba’s sources of water supply, namely the Fika Patso and Metsimatsho dams. A sample of Landsat images from the same period was used to determine how the two water bodies have responded to the change over time. The results indicate that the two reservoirs have shrunk due to climate change induced drought, thus worsening water insecurity in the city. The results also indicate that mean annual stream discharge is projected to decrease by 39% for the 2016–2045 period. Lastly, based on government reports on water shortages in Phuthaditjhaba and other secondary sources, the results also indicate that though 90% of Phuthaditjhaba’s population has access to potable water, only 55% of the residents have access to reliable water supply. We conclude that without urgent government intervention the future of the livelihoods of the poor majority of Phuthaditjhaba’s residents will remain bleak due to dwindling water resources, making SDG 6, and those influenced by it, unattainable.

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Youngquist, G. R. "Convective Effects on Secondary Nucleation and Growth." In Crystallization and Precipitation, 45–51. Elsevier, 1987. http://dx.doi.org/10.1016/b978-0-08-035751-5.50013-1.

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Atti di convegni sul tema "Secondary precipitation"

Ying-Hsiao, Li, John D. Fambrough, and Carl T. Montgomery. "Mathematical Modeling of Secondary Precipitation from Sandstone Acidizing." In SPE Formation Damage Control Conference. Society of Petroleum Engineers, 1998. http://dx.doi.org/10.2118/39420-ms.

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Biserova-Tahchieva, A. "Secondary phase precipitation in ultrafine-grained superduplex stainless steels." In Superplasticity in Advanced Materials. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902615-25.

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Abstract. Ultrafine-grained S322750 superduplex stainless steel has been obtained through high-pressure torsion (HPT) process. Microstructural evolution after the severe plastic deformation (SPD) has shown no phase transformation. Isothermal heat treatment was applied after the deformation process in order to promote secondary phase precipitation. Precipitation was enhanced in the ultrafine-grained stainless steel in comparison to the coarse-grained stainless steel at the same isothermal heat treatment conditions. Mainly sigma phase and chromium nitrides were found as a product of the local di

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Nielsen, O̸yvind, Harald Laux, and Anne Lise Dons. "Modeling of Macrosegregation and Secondary Phase Precipitation During Solidification of Binary Alloys." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32890.

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A multiphase volume-averaged model describing macrosegregation in an alloy that solidifies by the formation and growth of a primary and a secondary solid phase has been formulated. The model is based on the work presented by Ni and Beckermann (Metall. Trans. 22B, 1991, p. 349), but is extended to account for secondary phase precipitation. A CFD model has been developed by implementation of the mathematical model in a commercial CFD code. Macrosegregation due to thermo-solutal convection in binary alloys with a stationary solid phase (primary and secondary solids) has been simulated. The predic

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Giannetta, Max, Jordi Cama, Josep Soler, Ignasi Queralt, and Robert Benaiges. "Natural attenuation of heavy metals via secondary hydrozincite precipitation in an abandoned Pb-Zn mine." In Goldschmidt2021. France: European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.7243.

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Zhang, Mengchuan, Tianbo Liang, Hao Bai, Bojun Li, Qing Wang, Erdong Yao, Fujian Zhou, and Wei Liu. "Production Enhancement with a New Acid in Tight Sandstone Reservoirs: Accelerating Guar Breaking and Minimizing Formation Damage." In 56th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2022. http://dx.doi.org/10.56952/arma-2022-2322.

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ABSTRACT: Crosslinked guar is suitable for the stimulation of thick tight sandstone reservoir, which can enhance the height and length of propped fractures. However, conventional gel breakers can leave residues that causes formation damage. Acid can accelerate the gel breaking rate, but it may cause secondary precipitation damage after reacting with the reservoir rock. In this study, a new acid with a low reaction rate, chelating effect, and high gel breakage is developed that can enhance the conductivity of created fractures by minimizing gel residues and inhibiting secondary precipitations a

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SCAMPONE, Giulia, Ozen GURSOY, Riccardo CERATO, and Giulio TIMELLI. "Influence of AlNb3.5B0.4 Grain Refinement on the Precipitation of Fe-rich Intermetallics in a secondary AlSi7Mg Alloy." In METAL 2021. TANGER Ltd., 2021. http://dx.doi.org/10.37904/metal.2021.4229.

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Yin, Fengshi, Zhen Xu, Bing Xue, Li Zhou, and Xuebo Jiang. "Precipitation of Nano-Sized Z-Phase in HR3C Austenitic Heat Resistant Steel." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62075.

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Effect of heat treatment on the precipitation behavior of secondary phases in a HR3C austenitic heat resistant steel was investigated. The microstructure of the steel in solution-treated state consists of austenitic matrix and coarse Z-phase particles. After aging treatment at 650–950°C for 1h, M23C6-type carbide precipitates along random grain boundaries. Dense and homogeneous nanosized Z-phase precipitates within austenite grains are obtained by an aging treatment at a temperature between 800 and 900°C for 1h. The high density of dislocation walls produced during the water-cooling process af

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Chen, Yang, Shilei Li, Jun Chen, Gen Li, and Weiqiang Li. "Effects of secondary carbonate precipitation and dissolution on Changjiang (Yangtze) river chemistry and estimates of silicate weathering rates." In Goldschmidt2023. France: European Association of Geochemistry, 2023. http://dx.doi.org/10.7185/gold2023.15481.

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Metzger, Lukas, and Matthias Kind. "Compartment Method for Dynamic Multi-Scale Simulation of Precipitation Reactors." In ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fedsm2014-21547.

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Precipitation crystallization is one possibility to produce nano-scaled solid particles from the liquid phase. High nucleation and growth rates are generated by mixing two well soluble reactants and their subsequent reaction to a sparingly soluble product. These primary processes can be very fast. Therefore experimental access to internal parameters is given insufficiently due to predominantly very short process times. Computational Fluid Dynamics (CFD) based methods are a promising tool to gain insight into those inaccessible processes. Unfortunately, 3D modeling of complex precipitation reac

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Kolpakova, Valentina, Denis Kulikov, Ruzaliya Ulanova, Nikolay Lukin, and Irina Gaivoronskaya. "BIOCONVERSION OF CEREAL SERUM - A SECONDARY PRODUCT FOR PRODUCING PROTEIN CONCENTRATES FROM PEA AND CHICK PEAS." In GEOLINKS International Conference. SAIMA Consult Ltd, 2020. http://dx.doi.org/10.32008/geolinks2020/b1/v2/06.

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Studies on the bioconversion of whey water formed from chickpea and pea grains in the preparation of protein concentrates have been performed. The serum remaining after precipitation of the main part of the protein was subjected to a symbiotic transformation of Saccharomyces cerevisiae 121 and Geotrichum candidum 977 yeast cultures with the formation of protein-containing products with a mass fraction of protein (52.27-57.90% of DS) and a complementary amino acid composition. A microbial-plant concentrate was used as an additive in the feeding of Wistar laboratory rats. After 25 days of feedin

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Rapporti di organizzazioni sul tema "Secondary precipitation"

Zavarin, M., S. Roberts, B. Viani, G. Pawloski, and T. Rose. Nuclear Melt Glass Dissolution and Secondary Mineral Precipitation at 40 to 200C. Office of Scientific and Technical Information (OSTI), June 2004. http://dx.doi.org/10.2172/15014339.

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Suitner, Niels. Data set on the dissolution experiments available. OceanNets, March 2023. http://dx.doi.org/10.3289/oceannets_d5.1.

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Abiotic laboratory-based experiments were undertaken to determine the characteristics of mineral dissolution in seawater and thereby examine the potential for ocean alkalinization applications. As part of the mesocosm campaigns on Gran Canaria 2021 (WP5.3) and Bergen 2022 (WP5.4) we contributed to the impact assessment of OAE by conducting labbased experiments, focused on the carbonate chemistry and the stability of alkalinity in TA enhanced seawater. Due to extensive precipitation of secondary Ca-carbonates during the dissolution experiments, the focus of WP5.1 changed from mineral dissolutio

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Kalesse-Los, Heike, Maximilian Maahn, Veronika Ettrichratz, and Anton Kotsche. Characterization of Orography-Influenced Riming and Secondary Ice Production and Their Effects on Precipitation Rates Using Radar Polarimetry and Doppler Spectra (CORSIPP-SAIL). Office of Scientific and Technical Information (OSTI), December 2023. http://dx.doi.org/10.2172/2242406.

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Riebesell, Ulf. Comprehensive data set on ecological and biogeochemical responses of a low latitude oligotrophic ocean system to a gradient of alkalinization intensities. OceanNets, August 2022. http://dx.doi.org/10.3289/oceannets_d5.4.

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The potential biogeochemical and ecological impacts of ocean alkalinity enhancement were tested in a 5-weeks mesocosm experiment conducted in the subtropical, oligotrophic waters off Gran Canaria in September/October 2021. In the nine mesocosms, each with a volume of about 10 m3 inhabiting a natural plankton community, alkalinity enhancement was achieved through addition of a mix of sodium bicarbonate and sodium carbonate, simulating CO2-equilibrated alkalinization in a gradient from control up to twice the natural alkalinity. The response of the enclosed plankton community to the alkalinity a

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Desbarats, A. J., and J. B. Percival. Hydrogeochemistry of mine tailings from a carbonatite-hosted Nb-REE deposit, Oka, Quebec, Canada. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331256.

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Environmental impacts associated with the mining of carbonatite deposits are an emerging concern due to the demand for critical metals. This study investigates the chemistry of tailings seepage at the former Saint Lawrence Columbium mine near Oka, Québec, Canada, which produced pyrochlore concentrate and ferroniobium from a carbonatite-hosted Nb-REE deposit. Its objectives are to characterize the mineralogy of the tailings and their pore water and effluent chemistries. Geochemical mass balance modeling, constrained by aqueous speciation modeling and mineralogy, is then used to identify reactio

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