Thematische Bibliographien / Physicochemical methodologies

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Auswahl der wissenschaftlichen Literatur zum Thema „Physicochemical methodologies“

Autor: Grafiati

Veröffentlicht am 18. Mai 2024

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Zeitschriftenartikel zum Thema "Physicochemical methodologies"

Mombeshora, Edwin T., und Edigar Muchuweni. „Dynamics of reduced graphene oxide: synthesis and structural models“. RSC Advances 13, Nr. 26 (2023): 17633–55. http://dx.doi.org/10.1039/d3ra02098c.

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Historical structural modelling and recent merits/demerits of physicochemical properties from synthesis methodologies as well as the prospects of using reduced graphene oxide in modern devices from the perspective of graphene oxide.

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Brill, Adam R., Elad Koren und Graham de Ruiter. „Molecular functionalization of 2D materials: from atomically planar 2D architectures to off-plane 3D functional materials“. Journal of Materials Chemistry C 9, Nr. 35 (2021): 11569–87. http://dx.doi.org/10.1039/d1tc01534f.

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The functionalization of 2D materials (2DMs) holds great promise future applications. Here we review the various ways in which 2DMs can be functionalized and how these methodologies influence the physicochemical properties of resulting 2DM composites.

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Barman, Biraj Kumar, Kanak Roy und Mahendra Nath Roy. „Probing Inclusion Complexes of Pentoxifylline and Pralidoxim inside Cyclic Oligosaccharides by Physicochemical Methodologies“. Zeitschrift für Physikalische Chemie 233, Nr. 8 (27.08.2019): 1109–27. http://dx.doi.org/10.1515/zpch-2017-1020.

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Abstract Structurally different Molecules namely Pentoxifylline and Pralidoxim were chosen along with α-cyclodextrin and β-cyclodextrin to study host-guest inclusion phenomena. The formations of host guest inclusion complexes were confirmed by studying 1H-NMR spectra, FT-IR spectra, apparent molar volume and viscosity co-efficient. The stabilities of inclusion complexes were compared calculating the binding constant from UV-VIS spectroscopic study. The 1:1 stoichiometry of the inclusion complexes were also determined by analysing the Jobs plot and surface tension data. The values for Gibbs’ free energy were found negative for both the processes. Based on all the above experiments the inclusion processes were found feasible for both the compounds. These types of inclusion complexes are of high interest in the field of research and industry as these are used as drug delivery systems.

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Cambra-López, María, Verónica Moset, María del Carmen López, Juan Sebastián Mesa, Laura Carpintero, Andrés Donadeu, Javier Dupuy et al. „Evaluation of Phosphorus Digestibility from Monocalcium and Dicalcium Phosphate Sources and Comparison between Total Tract and Prececal Digestibility Standard Methods in Broilers“. Animals 11, Nr. 12 (01.12.2021): 3427. http://dx.doi.org/10.3390/ani11123427.

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The objective of this study was to compare the total tract (total excreta and marker) and prececal methodologies to determine phosphorus (P) digestibility and to evaluate its variation as a function of the physicochemical characteristics of the inorganic phosphate used (monocalcium, MCP and dicalcium, DCP) from different commercial sources. A total of 176 1-day-old male broilers were used in two digestibility experiments. In Experiment 1, one MCP and one DCP were incorporated in the basal diet at two levels. In Experiment 2, MCP and DCP from three commercial sources were incorporated to the basal diet at one level. Physicochemical characteristics of inorganic phosphates were examined, as well. Additionally, bone mineralization and growth performance traits were investigated in both trials. The digestibility of MCP ranged from 75.2 to 87.4% and from 80.5 to 86.6% for DCP amongst methodologies, but differences between total tract and preceal methodologies were not statistically significant. Particle size, surface area, degree of crystallinity and impurities varied amongst commercial sources. The P digestibility of the three tested commercial sources of MCP was 79.6% (MCP1), 70.2% (MCP2) and 65.6% (MCP3); p > 0.05. The P digestibility of the 3 tested commercial sources of DCP was 80.1% (DCP1), 77.4% (DCP2) and 71.4% (DCP3); p > 0.05.

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Carvajal-Mena, Nailín, Gipsy Tabilo-Munizaga, Marleny D. A. Saldaña, Mario Pérez-Won, Carolina Herrera-Lavados, Roberto Lemus-Mondaca und Luis Moreno-Osorio. „Three-Dimensional Printing Parameter Optimization for Salmon Gelatin Gels Using Artificial Neural Networks and Response Surface Methodology: Influence on Physicochemical and Digestibility Properties“. Gels 9, Nr. 9 (20.09.2023): 766. http://dx.doi.org/10.3390/gels9090766.

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This study aimed to optimize the 3D printing parameters of salmon gelatin gels (SGG) using artificial neural networks with the genetic algorithm (ANN-GA) and response surface methodology (RSM). In addition, the influence of the optimal parameters obtained using the two different methodologies was evaluated for the physicochemical and digestibility properties of the printed SGG (PSGG). The ANN-GA had a better fit (R2 = 99.98%) with the experimental conditions of the 3D printing process than the RSM (R2 = 93.99%). The extrusion speed was the most influential parameter according to both methodologies. The optimal values of the printing parameters for the SGG were 0.70 mm for the nozzle diameter, 0.5 mm for the nozzle height, and 24 mm/s for the extrusion speed. Gel thermal properties showed that the optimal 3D printing conditions affected denaturation temperature and enthalpy, improving digestibility from 46.93% (SGG) to 51.52% (PSGG). The secondary gel structures showed that the β-turn structure was the most resistant to enzymatic hydrolysis, while the intermolecular β-sheet was the most labile. This study validated two optimization methodologies to achieve optimal 3D printing parameters of salmon gelatin gels, with improved physicochemical and digestibility properties for use as transporters to incorporate high value nutrients to the body.

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Maciel-Fritoli, Gisele Pereira, Ana Paula dos Santos Silva, Erickson Luiz De Moura, Rafaela Kropzak Schmoeller Hamm und Elisa Perez. „Comparability study between downstream methodologies using physicochemical characteristics of hyperimmune serum for human use“. Brazilian Journal of Health Review 6, Nr. 3 (09.05.2023): 9096–114. http://dx.doi.org/10.34119/bjhrv6n3-059.

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This study compared two downstream methodologies of antivenom production and statistically evaluated the results of quality control between batches of Antiloxoscelic Serum (approved or not) of these methods. The methodologies present significant downstream differences related to the quality control results. The document analysis and statistical evaluation of the results were obtained using a control chart. All batches showed physical-chemical results within the specification limits, but not all downstream B results were within the process control limits. In all quantitative results analyzed (total protein, non-protein nitrogen, phenol, total solids, pH, chloride), it was possible to verify that the downstream B samples did not meet the process control criteria established by the control chart. The conclusion is that method B is outside the control of the stipulated production process.

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Shah, Harsh S., Kaushalendra Chaturvedi, Shanming Kuang und Jian Wang. „Accelerating pre-formulation investigations in early drug product life cycles using predictive methodologies and computational algorithms“. Therapeutic Delivery 12, Nr. 11 (November 2021): 789–97. http://dx.doi.org/10.4155/tde-2021-0043.

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Precisely developed computational methodologies can allow the drug product lifecycle process to be time-efficient, cost-effective and reliable through a thorough fundamental understanding at the molecular level. Computational methodologies include computational simulations, virtual screening, mathematical modeling and predictive tools. In light of current trends and increased expectations of product discovery in early pharmaceutical development, we have discussed different case studies. These case studies clearly demonstrate the successful application of predictive tools alone or in combination with analytical techniques to predict the physicochemical properties of drug substances and drug products, thereby shortening research and development timelines. The overall goal of this report is to summarize unique predictive methodologies, which can assist pharmaceutical scientists in achieving time-sensitive research goals and avoiding associated risks that can potentially affect the drug product quality.

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Monteiro, Nelly M. F., Noel H. Akissoe, Laurent Adinsi, Paul Houssou, Polycarpe Kayode, Mohamed M. Soumanou und Joseph D. Hounhouigan. „Processing Capability of Maize Varieties Through Free Sorting and CATA Methodologies and Physicochemical Characteristics“. Journal of Food Research 6, Nr. 3 (10.05.2017): 102. http://dx.doi.org/10.5539/jfr.v6n3p102.

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Maize varieties have specific food processing abilities, with reference to the production of gambari-lifin, lifin, mawe and ogi, four major intermediate products in Benin. Except for the gambari-lifin, these products are widely known in the most of African countries. The recent development of gambari-lifin in relation with the maize grains quality suggests the screening of appropriate maize cultivars for minimizing failure during processing. Panelists comprising 77 maize food processors sorted fifteen maize varieties of which fourteen improved and one local ecotype, and then described each group with their own words. Additionally, 70 maize food processors performed the CATA (Check All That Apply) questions test with a list of sensory terms on the maize varieties. Furthermore, selected physicochemical and rheological parameters were determined on seven representative maize varieties. Multidimensional scaling (MDS) and hierarchical cluster analysis and multiple factorial analyses (MFA) were performed on sensory descriptors and instrumental data. Based on MDS, four groups of maize varieties were identified being specifically appropriate for one or more of these intermediate products. Grains size and weight, endosperm texture and in a lesser extent colour were the major group descriptors of maize varieties. Vitreous character or average size were positively correlated to processing yield as far as gambari-lifin is concerned while floury character was associated to “ability for pasting”. This study confirms that food processors perception is very helpful and useful tools for maize breeders since it early provides consistent information for the end-uses products.

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Palacios-Hugo, Rosario, José Luis Calle-Maravi, Mary Flor Césare-Coral, Joshua Iparraguirre und Paul Virú-Vásquez. „Physicochemical Characterization and Stability of Biochar Obtained from 5 Species of Forest Biomass in Peru“. Environmental Research, Engineering and Management 79, Nr. 3 (13.10.2023): 35–51. http://dx.doi.org/10.5755/j01.erem.79.3.33084.

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The maintenance of the extensive parks at National Agrarian La Molina University (UNALM) generates a large amount of forest biomass, with high treatment costs. For this reason, the pyrolysis of the forest biomass is an alternative for valorization, allowing proper management producing biochar. The aim of the research was to evaluate the stability of biochar at 300°C and 500°C from forest biomass of five predominant species at UNALM, Grevillea robusta, Schinus molle, Casuarina cunninghamiana, Ficus benjamina and Eucalyptus spp. To determine the stability of biochar produced, two methodologies were used (IBI and an adaptation of the López et al.(2010) method), for which organic, labile, oxidizable, recalcitrant carbon on biochar were determined. The results showed a decrease in biochar yield of 6.50% with an increasing pyrolysis temperature. Regarding physicochemical characteristics, the biochar produced was alkaline (pH above 8); besides, the pH and electrical conductivity increased with temperature, by 0.64 and 0.38 ds/m, respectively. However, in the case of nitrogen and ashes, the opposite occurred. It was concluded that all the biochar produced complied with the stability limits according to the applied methodologies, and BSM500 had the highest value of stability considering the applied methodologies. This may indicate that it could have the greatest sequestration of C once applied to the soil and also the reduction of emissions; for that reason, it would be important to carry out future research to estimate the potential for C sequestration in the long term.

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Coelho, Ana Paula de Freitas, Flavia Fracalossi Baioco, Camilla Sena da Silva und Luis Cesar da Silva da Silva. „Obtaining and physicochemical characterization of yacon derivatives“. Revista Engenharia na Agricultura - REVENG 31, Contínua (30.10.2023): 158–67. http://dx.doi.org/10.13083/reveng.v30i1.15122.

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The present study aimed to develop and evaluate methodologies of yacon root processing for the production of whole juice, syrup and flour. The physicochemical and color attributes of the derivatives were evaluated through the parameters L*, b*, h. C. ANOVA and Tukey’s test were used to analyze the obtained data, at a 5% significance level. The bleaching treatment was effective in the preparation of the juices by keeping the color coordinates constant and preserving the physicochemical characteristics. Regarding the color coordinates, the syrup with citric acid presented a higher L* value, which indicates greater clarity than the others; a h value near 90°, which indicates greater proximity to the yellow color; and a higher C value, which reveals greater color purity. The pie flour presented high crude fiber content and, together with the control syrup, the highest ash content. The syrup with the antioxidant citric acid presented the best color coordinates and a pH close to 4.5, which makes it the best yacon derivative among those analyzed in this study.

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Mehr Quellen

Dissertationen zum Thema "Physicochemical methodologies"

Yasmin, Ananya. „Investigation of Host Guest Inclusion Complexations and Diverse Interactions of Some Industrially and Biologically Potent Molecules in Assorted Phases by Physicochemical Methodologies“. Thesis, University of North Bengal, 2019. http://ir.nbu.ac.in/handle/123456789/2854.

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Heatherly, Thomas. „Relationships between macroinvertebrate assemblages and physicochemical factors in Illinois streams : implications for bioassessment methodologies and the adjudication of impairment /“. Available to subscribers only, 2006. http://proquest.umi.com/pqdweb?did=1240695451&sid=7&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Quisefit, Jean-Paul. „Physico-chimie de l'aerosol volcanique : modelisation thermochimique du refroidissement des emanations de haute temperature“. Paris 7, 1988. http://www.theses.fr/1988PA077143.

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Les prelevements sur l'etna (1978-86) et le momotombo (1985-86) sont effectues a l'aide d'impacteurs en cascade fractionnant l'aerosol en 6 classes granulometriques puis analyses par pixe et sfx. Le comportement en fonction de l'activite volcanique des elements constitutifs et des elements volatiles est etudie. La modelisation thermochimique dynamique realisee permet de conclure sur les mecanismes de generation d'origine haute temperature et la modelisation thermodynamique avec ou sans apport d'air permet de conclure sur les principales voies de condensation du gaz de haute temperature evoluant naturellement

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Buchteile zum Thema "Physicochemical methodologies"

Esmeralda-Guzmán, Maricela, Catalina de Jesús Hernández-Torres, Desiree Dávila-Medina, Thelma Morales-Martínez und Leonardo Sepúlveda. „Physicochemical Properties and Extraction Methodologies of Agroindustrial Wastes to Produce Bioactive Compounds“. In Practical Applications of Physical Chemistry in Food Science and Technology, 39–59. Series statement: Innovations in physical chemistry: monographic series: Apple Academic Press, 2020. http://dx.doi.org/10.1201/9781003020004-2.

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„Research Methodologies On Physicochemical Properties And Structure Of Graphitic Carbons“. In Materials Science and Engineering, Volume II, 309–42. Apple Academic Press, 2016. http://dx.doi.org/10.1201/b16921-19.

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„Research Methodologies On Physicochemical Properties And Structure Of Graphitic Carbons“. In Materials Science and Engineering, 609–42. Apple Academic Press, 2018. http://dx.doi.org/10.1201/b17621-37.

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„Functioning Similarity of Physicochemical Regulatory System of the Lipid Peroxidation on the Membrane and Organ Levels“. In Bioscience Methodologies in Physical Chemistry, 265–74. Apple Academic Press, 2013. http://dx.doi.org/10.1201/b15300-19.

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Miguez, Ingrid Santos, Fernanda Thimoteo Azevedo Jorge, Roberta Pereira Espinheira, Ronaldo Rodrigues de Sousa, Viridiana Santana Ferreira Leitão, Ricardo Sposina Sobral Teixeira, Carmen Lucia de Oliveira Petkowicz und Ayla Sant’Ana da Silva. „Plant cell wall polysaccharides: Methodologies for compositional, structural, and physicochemical characterization“. In Polysaccharide-Degrading Biocatalysts, 1–37. Elsevier, 2023. http://dx.doi.org/10.1016/b978-0-323-99986-1.00002-8.

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Gómez-Caravaca, Ana María, Antonio Segura-Carretero, Antonio Martínez-Férez und Javier Miguel Ochando-Pulido. „Recovery of Phenolic Compounds From Olive Oil Mill Wastewaters by Physicochemical Methodologies“. In Food Bioconversion, 467–89. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-12-811413-1.00014-0.

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Dai, Yitao, Jinho Lee und Harun Tüysüz. „Preparation and Physicochemical Properties of Nanostructured Halide Perovskites“. In Halide Perovskites for Photonics, 2–1. AIP Publishing LLCMelville, New York, 2021. http://dx.doi.org/10.1063/9780735423633_002.

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Perovskite-type metal halides are gaining intense research interest owing to their promising applications in optoelectronic devices such as solar cells, phototransistors, lasers, light-emitting diodes, and recently in photocatalysis. Herein, state-of-the-art selected synthetic methodologies, which include solvent-induced precipitation, hot injection, spin coating, thermal and chemical vapor deposition, ligand mediation, and templating, are discussed to prepare a range of nanostructured halide perovskites with tunable structural properties. By using the appropriate synthetic protocol, the physicochemical properties, textural parameters, size, shape, and morphologies of the halide perovskite can be tuned from colloidal quantum dots to photonic crystals. Fundamental aspects of structure–property correlations of the halide perovskites through diverse analytical tools, like optical absorption, photoluminescence, x-ray diffraction, and electron microscopy, are evaluated. Finally, a perspective on the main challenges and bottlenecks of halide perovskites from the structural and synthetic points of view is presented.

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Ahuja, Tripti, Deeksha Satyabola und Sujan Manna. „Characterization Tools for Nanomaterials“. In Handbook of Research on Green Synthesis and Applications of Nanomaterials, 152–71. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-8936-6.ch007.

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Nanomaterials are nanostructures that have gained massive interest in the scientific community due to their exciting functional and physicochemical properties. They offer high stability, advanced optical-electronic properties, and tuneable surface functionalization. Such properties have made them a material of everyday use in the pharmaceutical industries, cosmetics, electronics, and many more. Considering their increasing usage, there is a demand for reliable and better quantitative and qualitative characterization tools. This chapter is dedicated to such characterization methodologies for the analysis of nanomaterials. Numerous distinct and integrated correlated techniques are discussed in detail. Such tools are arranged from the basic to advanced methods, each mentioning the unique property of nanomaterial such as elemental composition, morphology, crystal structure, magnetism, and strength. Lastly, some recent advancements in the characterization methodologies of nanostructures are provided. Understanding the properties of nanomaterials will enable us to expand their applications in society.

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Lloyd, Linda L., John F. Kennedy und Charles J. Knill. „Light scattering and chromatography in combination“. In Light Seattering, 494–523. Oxford University PressOxford, 2015. http://dx.doi.org/10.1093/oso/9780198517832.003.0015.

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Abstract The need to understand the relationships between the physicochemical characteristics of macromolecules has been the driving force for the development of instrumentation for the characterization of such molecules. Polymer chemists and biochemists have constantly strived for analytical instrumentation and methods which enable molecular weight and structure information to be generated, as it has long been recognized that these are fundamental properties which influence the physical properties of polymeric materials. Many methods have been utilized, such as thermogravimetric analysis, osmometry, viscometry, and light scattering, which provide information on the bulk characteristics of a material, and separation systems, such as liquid chromatography, which attempt to separate the molecules prior to characterization. By combining the separation methodologies with the characterization methods, an exceptionally powerful method becomes available for determining not just bulk characteristics but also distributions of these characteristics.

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Luisa García-Betancourt, María, Sandra I. Ramírez Jiménez, Apsahara González-Hodges, Zandra E. Nuñez Salazar, Ismailia Leilani Escalante-García und Jeannete Ramírez Aparicio. „Low Dimensional Nanostructures: Measurement and Remediation Technologies Applied to Trace Heavy Metals in Water“. In Trace Metals in the Environment - New Approaches and Recent Advances. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.93263.

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A nanostructure is a system in which at least one external dimension is in the nanoscale, it means a length range smaller than 100 nm. Nanostructures can be natural or synthetic and determine the physicochemical properties of bulk materials. Due to their high surface area and surface reactivity, they can be an efficient alternative to remove contaminants from the environment, including heavy metals from water. Heavy metals like mercury (Hg), cadmium (Cd), arsenic (As), lead (Pb), and chromium (Cr) are highly poisonous and hazardous to human health due to their non-biodegradability and highly toxic properties, even at trace levels. Thus, efficient, low-cost, and environmentally friendly methodologies of removal are needed. These needs for removal require fast detection, quantification, and remediation to have heavy metal-free water. Nanostructures emerged as a powerful tool capable to detect, quantify, and remove these contaminants. This book chapter summarizes some examples of nanostructures that have been used on the detection, quantification, and remediation of heavy metals in water.

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Konferenzberichte zum Thema "Physicochemical methodologies"

Nebot, Àngela, Francisco Mugica und Antoni Escobet. „Modeling Wine Preferences from Physicochemical Properties using Fuzzy Techniques“. In 5th International Conference on Simulation and Modeling Methodologies, Technologies and Applications. SCITEPRESS - Science and and Technology Publications, 2015. http://dx.doi.org/10.5220/0005551905010507.

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Huys, T., und P. Gielen. „Systematic Approach to Radioactive Waste Characterization at Belgoprocess“. In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7267.

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Belgoprocess is capable of processing almost every type of low and medium level radioactive waste and thereby covering a large segment from the back-end of the nuclear fuel cycle. Waste from numerous producers is treated and conditioned into a stable end product. Such processes lead inevitably to the generation of a large number of different waste streams. Each of these streams is uniquely defined by its radiological and physicochemical characteristics. From regulatory point of view and in order to select appropriate processing and conditioning techniques it is essential to characterize each of these waste streams. Because of the labour-intensive nature of the work and to keep a trustworthy traceability, Belgoprocess has decided to automate this task as far as possible. Therefore it has developed a system that seamlessly integrates waste-accounting and radiological characterization into one system. The use of generic methodologies, isotope vectors and a measurement database makes it possible to characterize most waste packages without elaborate knowledge of radiological characterization. A nuclear engineer develops generic methodologies and defines isotope vectors and appropriate measurements. These combinations are documented in procedures and used by the waste-accounting team to characterize the waste packages. The whole system is designed and programmed in such a way that it offers maximum flexibility and traceability. For example, changes in characterization of the previously processed and conditioned waste will propagate through the system until the changes reach the end product. This kind of systematic approach to radioactive waste characterization is found to be very fruitful.

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Aboushanab, M. S., M. Abdul Samad, A. Raza, M. Mahmoud, M. Al Kobaisi, M. M. Rahman und M. Arif. „Impact of Surface Roughness on Rock Wettability“. In International Petroleum Technology Conference. IPTC, 2024. http://dx.doi.org/10.2523/iptc-23362-ea.

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Abstract The wettability of the solid/fluid systems is an important property in several applications. The accurate determination of wettability in rock/fluid systems has a paramount role due to its fundamental influence on fluid distribution and the dynamics of multiphase flow in porous media. While various methodologies are available for the assessment of the wettability behavior of rocks, the goniometric approach, employed for contact angle measurements, is widely acknowledged for its direct applicability and appropriateness. This technique has the distinct advantage of facilitating wettability characterization for a broad spectrum of physicochemical conditions e.g., variations in pressure, temperature, and salinity. Several investigations have reported contact angles under diverse conditions for various rock/fluid systems. However, contact angles often depict an inconsistency in terms of the observed wetting behavior of specific rock/fluid systems under identical conditions. One prominent contributing factor to these discrepancies is rock's surface roughness. Typically, smooth and polished rock surfaces are utilized for contact angle measurements, and this study depicts that ignoring the inherent surface roughness of rocks can have notable impact on its wettability. This study analyzes the wetting characteristics of two distinct carbonate samples, each engineered to exhibit a spectrum of surface roughness values. Additionally, our investigation explores the impact of varying polish-abrasive sizes and types on both surface roughness and wettability, utilizing commercially accessible abrasives spanning a wide spectrum of dimensions, which include liquid silicon carbide (Si-C) and sandpaper. The results contribute to an enhanced comprehension of the mechanisms governing wettability fluctuations at the millimeter scale and thus explain the underlying mechanisms influencing wetting properties.

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Rizzo, P., I. Santos, V. Brant, L. de Barros, A. Fidalgo Neto, M. da Silva, R. Fontes et al. „Hyamine Method Applied to Brazilian Campos Basin“. In Offshore Technology Conference Brasil. OTC, 2023. http://dx.doi.org/10.4043/32931-ms.

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Abstract The residual level analysis related to scale inhibitors in produced water using offshore methodology is the key challenge in inorganic scale management, therefore proposal of simple and fast analytical techniques is mandatory. The objective of this work is to quantify residual polymeric scale inhibitors in produced water from a Brazilian post-salt well A using the solid-phase extraction (SPE) followed by reaction with a precipitating agent and subsequent turbidimetric evaluation. Major obstacle in this development topic regarding residual scale inhibitor detection methodologies relay on the matrix interference due to contaminants and the usual high salinity in samples. In fact, SPE allowed the removal of these interferents and, also, made feasible the analyte pre-concentration. The reagent Hyamine 1622 was employed due to its ability to effectively precipitate anionic surfactants, generating detectable turbidity. For this, the methodology was optimized considering sample percolation and desorption volumes, pH, time and temperature related to the complexation between the inhibitor and Hyamine 1622, being then successful in quantifying the polymeric scale inhibitor (usually employed in squeeze treatment) in residual levels with adequate linearity. In addition, it was found that the possible presence of iron (due to corrosive processes) does not compromise the analy sis, which is highly desirable. Further evaluation was also carried out with synthetic brine samples (representative of the field conditions), showing similar behavior that is found for produced water, indicating that the procedure is efficient in removing interferents. Each brazilian scenario offers physicochemical particularities due to the inherent well characteristics, which are based both on the matrix and the active polymeric compounds from the squeeze treatment. Therefore, each development and optimization method will depend on these variables, but the present initiative demonstrates not only the viability of the analytical and operational approach, but also the potential to standardize analyzes in an offshore environment.

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Fandakov, Alexander, Paul Tourlonias, Alexander Herzog, Emre Özkan, Ronny Kurt Mehnert und Marc Sens. „Model-Based Energy Consumption Optimization of a Twin Battery Concept Combining Liquid and Solid-State Electrolyte Cells“. In 16th International Conference on Engines & Vehicles. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2023. http://dx.doi.org/10.4271/2023-24-0154.

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<div class="section abstract"><div class="htmlview paragraph">The majority of powertrain types considered important contributors to achieving the CO<sub>2</sub> targets in the transportation sector employ a battery as an energy storage device. The need for batteries is hence expected to grow drastically with increasing market share of CO<sub>2</sub>-optimized powertrain concepts. The resulting huge pressure on the development of future electrochemical energy storage systems necessitates the application of advanced methodologies enabling a fast and cost-efficient concept definition and optimization process. This paper presents a model-based methodology for the optimization of BEV thermal management concept layouts and operation strategies targeting minimized energy consumption. Starting at the vehicle level, the proposed methodology combines appropriate representations of all primary powertrain components with 1D cooling and refrigerant circuit models and focuses on their interaction with the battery chemistry. To this end, the battery cells are thermally modeled in 3D, complemented by a P2D electro-physicochemical approach. Thanks to online coupling the cell representation with the 1D powertrain and thermal management models, heat transfer and cell temperatures can be calculated as a function of the boundary conditions at each simulation step. The model-based methodology is subsequently employed for the optimization of a novel Twin Battery concept combining sodium-ion and solid-state lithium-ion battery cells. The approach enables the cost-efficient adaption of both thermal management layout and operation strategy, resulting in reduced energy input and shorter time required for reaching operation temperature of the solid-state cells. Ultimately, a minimization of the overall powertrain energy consumption can be achieved while ensuring chemistry-specific optimal temperature levels and hence reduced battery aging.</div></div>

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