Journal articles: 'Calorimetric methods'

1

Sanchez Costa, José. "Macroscopic methods: Magnetic, optical, and calorimetric techniques." Comptes Rendus Chimie 21, no. 12 (2018): 1121–32. http://dx.doi.org/10.1016/j.crci.2018.04.004.

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Ridi, Francesca, Emiliano Fratini, Paola Luciani, Frank Winnefeld, and Piero Baglioni. "Hydration kinetics of tricalcium silicate by calorimetric methods." Journal of Colloid and Interface Science 364, no. 1 (2011): 118–24. http://dx.doi.org/10.1016/j.jcis.2011.08.010.

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Lacom, W., and H. P. Degischer. "Transformation studies in ALZnMg alloys by calorimetric methods." Thermochimica Acta 94, no. 1 (1985): 93–104. http://dx.doi.org/10.1016/0040-6031(85)85249-7.

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Toenjes, Anastasiya, Heike Sonnenberg, Christina Plump, Rolf Drechsler, and Axel von Hehl. "Measurement and Evaluation of Calorimetric Descriptors for the Suitability for Evolutionary High-Throughput Material Development." Metals 9, no. 2 (2019): 149. http://dx.doi.org/10.3390/met9020149.

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A novel method for evolutionary material development by using high-throughput processing is established. For the purpose of this high-throughput approach, spherical micro samples are used, which have to be characterized, up-scaled to macro level and valued. For the evaluation of the microstructural state of the micro samples and the associated micro-properties, fast characterization methods based on physical testing methods such as calorimetry and universal microhardness measurements are developed. Those measurements result in so-called descriptors. The increase in throughput during calorimetric characterization using differential scanning calorimetry is achieved by accelerating the heating rate. Consequently, descriptors are basically measured in a non-equilibrium state. The maximum heating rate is limited by the possibility to infer the microstructural state from the calorimetric results. The substantial quality of the measured descriptors for micro samples has to be quantified and analyzed depending on the heating rate. In this work, the first results of the measurements of calorimetric descriptors with increased heating rates for 100Cr6 will be presented and discussed. The results of low and high heating rates will be compared and analyzed using additional microhardness measurements. Furthermore, the validation of the method regarding the suitability for the evolutionary material development includes up-scaling to macro level and therefore different sample masses will be investigated using micro and macro samples during calorimetry.

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Motalo, Andrij, and Vasil Motalo. "ANALYSIS OF CALORIMETRIC METHOD OF MEASUREMENT OF NATURAL GAS CALORIFIC VALUE." Measuring Equipment and Metrology 82, no. 3 (2021): 32–41. http://dx.doi.org/10.23939/istcmtm2021.03.032.

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The article considers the current methods of measuring the calorific value of natural gas which are valid in the upto-date gasometry. The procedure for measuring the gross and net volume-basis specific calorific value of natural gas by the calorimetric method is analyzed. It is shown that to increase the accuracy and validity of measurement results, the experiment to determine the values of gross and net volume-basis specific calorific should be performed for at least 5 samples of the investigated gas. A methodology for estimating the accuracy of measuring the gross and net volume-basis specific calorific values of natural gas by the calorimetric method by finding estimates of the uncertainty of the obtained measurement results taking into account both random and systematic influencing factors are developed. The uncertainty budgets for measuring the gross and net volumebasis-specific calorific values of natural gas have been developed for the practical implementation of the methodology. The results of experimental studies of samples of one of the natural gas fields are given and the objective values of the gross and net volumebasis specific calorific with estimates of extended uncertainty are obtained.

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Genka, Tsuguo, and Tsuyoshi Imahashi. "Radioactivity measurements of 153Gd pellet sources by calorimetric methods." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 312, no. 1-2 (1992): 193–97. http://dx.doi.org/10.1016/0168-9002(92)90152-t.

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Watanabe, Sadayuki, Tadashi Suzuki, and Teijiro Ichimura. "Calorimetric standards for photothermal methods at the 248 nm excitation." Chemical Physics Letters 374, no. 1-2 (2003): 41–44. http://dx.doi.org/10.1016/s0009-2614(03)00682-1.

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Poznański, Jarosław, Małgorzata Wszelaka-Rylik, and Wojciech Zielenkiewicz. "Concentration dependencies of NaCl salting of lysozyme by calorimetric methods." Thermochimica Acta 409, no. 1 (2004): 25–32. http://dx.doi.org/10.1016/s0040-6031(03)00329-0.

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El-Toufaili, F. A., K. H. Reichert, and G. Feix. "Fast Screening of Polycondensation Catalysts by Gravimetric and Calorimetric Methods." Chemie Ingenieur Technik 77, no. 8 (2005): 978. http://dx.doi.org/10.1002/cite.200580029.

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Piekarski, H. "Application of calorimetric methods to investigations of interactions in solutions." Pure and Applied Chemistry 71, no. 7 (1999): 1275–83. http://dx.doi.org/10.1351/pac199971071275.

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Vorster, O. C., and L. Halasz. "The use of a rheological technique in the determination of the curing kinetics of a reactive polyester powder coating." Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 23, no. 1/2 (2004): 13–21. http://dx.doi.org/10.4102/satnt.v23i1/2.188.

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In this article a study of the curing process of carboxyl terminated polyester-triglycidyl isocyanurate systems is reported. A comparison is made between the generally used Differential Scanning Calorimetric methods and rheokinetic methods, using a parallel plate oscillating stress rheometer. Gel times were determined and scaling exponents calculated. A new method for the estimation of the extent of reaction is presented and compared with results obtained by means of differential scanning calorimetry

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Sanderson, Rebecca A., Gavin M. Cann, and John L. Provis. "Comparison of calorimetric methods for the assessment of slag cement hydration." Advances in Applied Ceramics 116, no. 4 (2017): 186–92. http://dx.doi.org/10.1080/17436753.2017.1288371.

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Aarniovuori, L., A. Kosonen, P. Sillanpää, and M. Niemelä. "High-Power Solar Inverter Efficiency Measurements by Calorimetric and Electric Methods." IEEE Transactions on Power Electronics 28, no. 6 (2013): 2798–805. http://dx.doi.org/10.1109/tpel.2012.2221166.

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Loyau, Vincent, Martino LoBue, and Frederic Mazaleyrat. "Comparison of Losses Measurement in a Ferrite With Two Calorimetric Methods." IEEE Transactions on Magnetics 46, no. 2 (2010): 529–31. http://dx.doi.org/10.1109/tmag.2009.2032860.

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Mason, Marco, Matteo Scampicchio, Colette F. Quinn, et al. "Calorimetric Methods for Measuring Stability and Reusability of Membrane Immobilized Enzymes." Journal of Food Science 83, no. 2 (2017): 326–31. http://dx.doi.org/10.1111/1750-3841.14023.

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Suzuki, T., Y. Kajii, K. Shibuya, and K. Obi. "Calorimetric standards for photothermal methods in ultraviolet and visible spectral regions." Research on Chemical Intermediates 15, no. 3 (1991): 261–70. http://dx.doi.org/10.1163/156856791x00372.

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Hardono, T., C. D. Cook, and J. X. Jin. "Calorimetric methods for measuring AC losses in HTSC tapes carrying currents." Superconductor Science and Technology 11, no. 10 (1998): 1087–90. http://dx.doi.org/10.1088/0953-2048/11/10/041.

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Egenolf-Jonkmanns, Baerbel, Juergen Graen-Heedfeld, and Stefano Bruzzano. "Development of calorimetric methods for the characterization of different aqueous deicers." Journal of Thermal Analysis and Calorimetry 127, no. 1 (2016): 857–62. http://dx.doi.org/10.1007/s10973-016-5426-6.

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Gołofit, Tomasz, and Mateusz Szala. "Origin of PYX thermal stability investigation with calorimetric and spectroscopic methods." Journal of Thermal Analysis and Calorimetry 130, no. 3 (2017): 2047–54. http://dx.doi.org/10.1007/s10973-017-6554-3.

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20

Seidel, J. "Application of calorimetric methods to the adsorption of surfactants from solution." Thermochimica Acta 229 (December 1993): 257–70. http://dx.doi.org/10.1016/0040-6031(93)80333-6.

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Vasylenkov, V. Ye, and M. N. Gudzenko. "Experimental Determination of the Dose of Energy Received by Seed Material After Irradiation by Electric Field." Science and innovation 16, no. 5 (2020): 63–70. http://dx.doi.org/10.15407/scine16.05.063.

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Introduction. Maximum use of potential biological potential of seed material is among the ways to increase the production and to improve the quality of agricultural products. In view of the above, various methods of preseeding treatment of seeds of agricultural crops by means of electromagnetic fields are used. At the same time there is insufficient clarity of reproducibility of the results of radiation. Problem Statement. However, the conventional methods for determining germination capacity require a wide range of equipment and materials and are time-consuming. Therefore, the search for new methods of pre-seeding treatment and the development of rapid calorimetric methods are promising directions of research. Purpose. To study the effect of irradiation on seed material, by calorimetric methods. Materials and Methods. To determine the caloric value of seed material, two batches of Scarlet barley seeds are taken, one of which is irradiated with an electric field. The caloric value of the grain has been determined using the calorimetric device B-08M, according to DSTU ISO 1928:2006. Results. The results of quantitative indicators of temperature change of the irradiated and reference batch of barley grain have been presented in a graphical form to visualize the effect of irradiation. The analysis of results has shown that the non-irradiated seeds have a germination capacity of 82%, while for the irradiated seeds this index is equal to 88%. Respectively, their caloric value is 10 842 kJ/kg and 11 985 kJ/kg, i.e. differs by 10.5%. An experimental dependence has been established that to increase germination by 1% it is necessary to increase the caloric value of seed mass by approximately 1.83%. Conclusions. A 10-11% increase in the caloric value of the seeds after irradiation indicates that the irradiation process is realized. The use of calorimetry methods can be recommended as a seed material irradiation quality control method.

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Giraldo, Liliana, Paola Rodriguez-Estupiñán, and Juan Carlos Moreno-Piraján. "Isosteric Heat: Comparative Study between Clausius–Clapeyron, CSK and Adsorption Calorimetry Methods." Processes 7, no. 4 (2019): 203. http://dx.doi.org/10.3390/pr7040203.

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This work presents the calorimetric study of five adsorbents with different chemical and textural characteristics: MOF-199, MCM-41, SBA-15, activated carbon prepared from corn cob (GACKP) and graphite. These solids were used to establish the differences between isosteric heats evaluated by three different methods: Clausius–Clapeyron (C-C), Chakraborty, Saha and Koyama (CSK) and Adsorption Calorimetry (A-Cal). The textural characterization results show solids that have values of specific surface area between 2271 m2·g−1 for the MOF-199 and 5.2 m2·g−1 for the graphite. According to the results obtained for the isosteric heats for each sample, the magnitude varies depending on the coverage of the adsorbate and the textural characteristics of each adsorbent. Solids with an organized structure have isosteric heat values that are coincident among the three methods. Meanwhile, heterogeneous solids such as activated carbon values evaluated by the CKS and C-C have a high dispersion method regarding the adsorption calorimetry method. The results obtained show that the adsorption calorimetry, being a direct experimental measurement method, presents less dispersed data. At low quantities, the isosteric heat of nitrogen adsorption decreased in the order MOF-199, GACKP, MCM-41, SBA-15 and Graphite. The order for the isosteric heats values was coherent with the surface characteristics of each of the solids, especially with the pore size distribution. Finally, throughout the coverage examined in this work, the isosteric heats for nitrogen adsorption determined by adsorption calorimetry (A-Cal) were larger than the evaluated by C-C and CSK indirect methods of vaporization. According to the results, it is shown that the adsorption calorimetry allows values of the isosteric heats of adsorption with an error of less than 2% to be established and also reveals the complex nature of the heterogeneity or homogeneity of the adsorbent.

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Ivanov, S. O., L. V. Dekusha, L. Y. Vorobiov, and O. L. Dekusha. "THE DEVELOPMENT OF A CRYOGENIC CALORIMETRIC SYSTEM FOR STUDYING THE STATE OF LIQUIDS IN INHOMOGENEOUS MATERIALS." Thermophysics and Thermal Power Engineering 43, no. 2 (2021): 84–90. http://dx.doi.org/10.31472/ttpe.2.2021.10.

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The analysis of methods and means of experimental determination of the ratio of free and bound moisture in materials is carried out, and it is shown that most of the available measuring instruments do not allow investigating the ratio of free and bound moisture on representative samples of heterogeneous materials, therefore there is a need to create a specialized device for these purposes. Thus, the concerned work is aimed to the development of the differential scanning calorimetry method for studying the state of liquids in inhomogeneous materials and the creation of a cryogenic calorimetric system for the implementation of this method. On the basis of the performed analysis, recommendations were formulated for the development of a measuring system that is capable of examining representative samples of heterogeneous materials of various structures without the need for their preliminary grinding. The method of differential scanning calorimetry has been improved for studying the state of water and organic liquids in inhomogeneous materials in a wide temperature range, which is based on the use of a three-cell differential measurement scheme, as well as the use of cells, the configuration of which allows taking into account the peculiarities of inhomogeneous raw materials. A prototype of a cryogenic calorimetric system has been created, and a method for studying the metrological characteristics of such a system has been developed. On the basis of experimental studies, it has been established that the limits of the permissible relative measurement error of using the developed cryogenic calorimetric system are ± 5%, which corresponds to world analogues.

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Małuszyńska, Hanna, Piotr Czarnecki, Anna Czarnecka, and Zdzisław Pająk. "Structures and phase transitions in a new ferroelectric – pyridinium chlorochromate – studied by X-ray diffraction, DSC and dielectric methods." Acta Crystallographica Section B Structural Science 68, no. 2 (2012): 128–36. http://dx.doi.org/10.1107/s0108768112005782.

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Pyridinium chlorochromate, [C5H5NH]+[ClCrO3]− (hereafter referred to as PyClCrO3), was studied by X-ray diffraction, differential scanning calorimetry (DSC) and dielectric methods. Studies reveal three reversible phase transitions at 346, 316 and 170 K with the following phase sequence: R\bar 3m (I) → R3m (II) → Cm (III) → Cc (IV), c′ = 2c. PyClCrO3 is the first pyridinium salt in which all four phases have been successfully characterized by a single-crystal X-ray diffraction method. Structural results together with dielectric and calorimetric studies allow the classification of the two intermediate phases (II) and (III) as ferroelectric with the Curie point at 346 K, and the lowest phase (IV) as most probably ferroelectric. The ferroelectric hysteresis loop was observed only in phase (III). The high ionic conductivity hindered its observation in phase (II).

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Diop, Adji, Imed Ben Talouba, Laurent Balland, and Nordine Mouhab. "Thermal characterization of a biodiesel nitration: Bio-additive’s synthesis by calorimetric methods." Thermochimica Acta 673 (March 2019): 138–46. http://dx.doi.org/10.1016/j.tca.2019.01.024.

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Casares, Juan A., Pablo Espinet, and Gorka Salas. "Palladium Catalysts for Norbornene Polymerization. A Study by NMR and Calorimetric Methods." Organometallics 27, no. 15 (2008): 3761–69. http://dx.doi.org/10.1021/om800264a.

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Monchau, Jean-Pierre, Jacques Hameury, Patrick Ausset, Bruno Hay, Laurent Ibos, and Yves Candau. "Comparative study of radiometric and calorimetric methods for total hemispherical emissivity measurements." Heat and Mass Transfer 54, no. 5 (2017): 1415–25. http://dx.doi.org/10.1007/s00231-017-2238-6.

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Frank, Nicole, Andreas Lißner, Mario Winkelmann, et al. "Degradation of selected (bio-)surfactants by bacterial cultures monitored by calorimetric methods." Biodegradation 21, no. 2 (2009): 179–91. http://dx.doi.org/10.1007/s10532-009-9292-9.

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Giron, D. "Thermal analysis and calorimetric methods in the characterisation of polymorphs and solvates." Thermochimica Acta 248 (January 1995): 1–59. http://dx.doi.org/10.1016/0040-6031(94)01953-e.

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Bryś, Andrzej, Joanna Bryś, Marko Obranović, et al. "Application of the Calorimetric Methods to the Characteristics of Seeds from Olives." Proceedings 70, no. 1 (2020): 90. http://dx.doi.org/10.3390/foods_2020-07665.

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The olive oil industry represents an important productive sector in the Mediterranean basin countries. Olive stone is an essential by-product generated in the olive oil extraction industries and it represents roughly 10% by weight of the olive fruit. The seeds of pickled olives are also a significant waste product. In the present study, we have investigated the possibility of the use of differential scanning calorimetry for the thermal characterization of seeds from green and black pickled olives from Croatia. The differential scanning calorimeter (DSC) with a normal pressure cell equipped with a cooling system was used to determine the thermal properties of seeds from olives. The following analyses were also performed: the determination of calorific values in a pressure bomb calorimeter, the determination of initial water content, the determination of changes of water content during drying at the temperatures of 30 °C, 50 °C and 80 °C, the determination of a percentage content of seeds mass to the mass of the whole olives, and the determination of ash content. Seeds from olives are characterized by very good parameters as a biomass. The analyzed olive seeds were characterized by low water content, low ash content, and a relatively high caloric value.

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Polyakova, M. A., K. Narasimhan, M. J. N. V. Prasad, K. G. Pivovarova, A. E. Gulin, and Yu Yu Efimova. "Peculiarities of structure formation of steel carbon wire of perlite class after a combined deformation processing." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information, no. 10 (November 9, 2018): 74–81. http://dx.doi.org/10.32339/0135-5910-2018-10-74-81.

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Creation of methods of metals and alloys deformation nanostructuring, which could be adapted into existing industrial plant by their technological parameters and productivity, is one of actual problems to be solved at present by researchers.Description of a wire combined deformation processing bydrawing with bending and twisting presented. Results of metallographic study of high-carbon wire of Stal 70 grade steel indicated specific peculiarities of influence of different kinds of plastic deformation combining on the steel structure. Mechanical tests of the wire after different kinds of combined processing showed, that such a processing provides combination of strength and ductility, typical for a steel with ultrafine grain structure. Using a method of differential scanning calorimetry, the stored energy value and calorimetric peak temperature value of deformed wire made of high-carbon Stal 70 steel determined. It was shown, that the stored energy value and calorimetric peak temperature value are sensitive to technological parameters of combined deformation processing change.

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Scaglione, D., G. Buttiglieri, E. Ficara, S. Caffaz, C. Lubello, and F. Malpei. "Microcalorimetric and manometric tests to assess anammox activity." Water Science and Technology 60, no. 10 (2009): 2705–11. http://dx.doi.org/10.2166/wst.2009.615.

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The present study compares two experimental methods to evaluate Anammox activity based on the assessment of (1) the N2 production rate by a manometric device, as previously proposed, and (2) the heat production rate by a microcalorimeter. Two samples of Anammox suspended biomass were taken from a pilot-plant, and their specific Anammox activity measured by both techniques. Both methods were successfully applied. As for calorimetric tests, they were performed for the first time on Anammox enriched sludge samples. Comparisons between the specific Anammox activities estimated by manometry and calorimetry and between expected (from the reaction enthalpy) and measured heat productions were performed. Promising results were obtained.

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Wang, Xiao Chun, Ran Wang, and Cai Jun Chen. "Application of Cone Calorimeter on the Flammability Testing of Textiles." Advanced Materials Research 332-334 (September 2011): 1959–63. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.1959.

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In the present work, cone calorimetric technique has been widely used to study the flammability of polymer. But there are few reports about the cone calorimetric technique exploited for textile. The flammability of cotton fabrics selected in this study was tested by cone calorimeter. The factors, such as fabric layers, heat flux, whether subjoining grid, were discussed and the repeatability of cone calorimetric data was analyzed. In addition, Attempts had been made to establish the suitable methods for measuring the flammability of textiles by cone calorimeter.

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Könczöl, Franciska, and Nelli Farkas. "The tumor cured, but what about the patient?" Orvosi Hetilap 154, no. 13 (2013): 510–15. http://dx.doi.org/10.1556/oh.2013.29575.

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Background: Polyneuropathy is defined as a simultaneous malfunction of several peripheral nerves, which could be a toxic side effect of cancer therapy; however, this is reported to occur rarely and difficult to confirm. Aims: The purpose of the study was to introduce, at the first time, the calorimetry in the diagnosis of neuropathy in an experimental animal model. The study was inspired by the forensic investigation of a 53-year-old cancer survivor female patient, in whom the development of polyneuropathy could be caused by cyclophosphamide therapy. Methods: Adult guinea pigs were injected intraperitoneally with the dose of cyclophosphamide, comparable to the human dosage. Animals were euthanized, then nerve and muscle samples were analyzed using a SETARAM Micro calorimeter. Denaturation temperatures were measured and the calorimetric enthalpies were calculated based on the areas under thermal absorption curves. Results: Thermal denaturations of the samples were decreased and the calorimetric enthalpies were increased depending on the doses of cyclophosphamide. The nerves were more sensitive to chemotherapy as compared to the muscles. Conclusion: It is concluded that toxic effects of cyclophosphamide on peripheral nerves and muscles can be measured and analysed by calorimetry, and that the effect was dose dependent. Orv. Hetil., 2013, 154, 510–515.

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Łudzik, Katarzyna, Sebastian Woloszczuk, Wojciech Zając, et al. "Can the Isothermal Calorimetric Curve Shapes Suggest the Structural Changes in Micellar Aggregates?" International Journal of Molecular Sciences 21, no. 16 (2020): 5828. http://dx.doi.org/10.3390/ijms21165828.

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Inspired by the unusual shapes of the titration curve observed for many surfactants and mixed colloidal systems, we decided to extend the analysis to isothermal titration calorimetric curves (ITC) by paying special attention to potential structural changes in micellar aggregates. In this paper, we used isothermal titration calorimetry in conjunction with Scanning Transmission Electron Microscopy (STEM), Small-Angle Neutron Scattering (SANS) and X-ray Scattering (SAXS) methods support by Monte Carlo and semiempirical quantum chemistry simulations to confirm if the isothermal calorimetric curve shape can reflect micelle transition phenomena. For that purpose, we analysed, from the thermodynamic point of view, a group of cationic gemini surfactants, alkanediyl-α,ω-bis(dimethylalkylammonium) bromides. We proposed the shape of aggregates created by surfactant molecules in aqueous solutions and changes thereof within a wide temperature range. The results provide evidence for the reorganization processes and the relationship (dependence) between the morphology of the created aggregates and the conditions such as temperature, surfactant concentration and spacer chain length which affect the processes.

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Weber, Patricia C., and F. Raymond Salemme. "Applications of calorimetric methods to drug discovery and the study of protein interactions." Current Opinion in Structural Biology 13, no. 1 (2003): 115–21. http://dx.doi.org/10.1016/s0959-440x(03)00003-4.

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Fischer, Marc, and Joseph Georges. "Sources of errors in the use of calorimetric references for photothermal spectroscopic methods." Analytica Chimica Acta 334, no. 3 (1996): 337–44. http://dx.doi.org/10.1016/s0003-2670(96)00344-3.

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Wójcik, G., J. Giermańsκa-Kahn, Y. Marqueton, and M. Foulon. "Monotropic Character of Polymorphism in Pentachloropyridine Crystal Studied by Calorimetric and Spectroscopic Methods." Acta Physica Polonica A 88, no. 2 (1995): 339–47. http://dx.doi.org/10.12693/aphyspola.88.339.

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Harper, David P., Michael P. Wolcott, and Timothy G. Rials. "Evaluating Cure of a pMDI-wood Bondline Using Spectroscopic, Calorimetric and Mechanical Methods." Journal of Adhesion 76, no. 1 (2001): 55–74. http://dx.doi.org/10.1080/00218460108029617.

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Gallop, JC, and WJ Radcliffe. "Comparison of microwave measurements in HTS thin films by calorimetric and perturbation methods." Physica C: Superconductivity 235-240 (December 1994): 3369–70. http://dx.doi.org/10.1016/0921-4534(94)91211-4.

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Infante-Martínez, José R., Enrique Saldívar-Guerra, Odilia Pérez-Camacho, Víctor Comparán-Padilla, and Maricela García-Zamora. "On-Line Calorimetry in the Ethylene Coordination Polymerization." MRS Proceedings 1613 (2014): 103–8. http://dx.doi.org/10.1557/opl.2014.165.

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ABSTRACTThe kinetic performance of metallocene type catalysts as well as their instantaneous activity is determined on line by two independent methods in the semi-batch polymerization of ethylene via metallocenes. On the basis of first-principles, both methods are described and guidelines for their implementation at a laboratory scale reactor are offered. Polymerization tests were conducted with two heterogenized metallocene catalysts showing that the direct method (based on ethylene flow measurement) and also the calorimetric method (based on energy balances) reported equivalent high quality information. The calorimetric method here developed can be readily used by the chemical practitioner as the notions and tools required for its implantation are easily grasped. It is noted that the calorimetric method has the advantage of requiring a low cost instrumentation (only thermocouples) whereas the direct method needs a relatively more sophisticated equipment (mass flow meter).

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Yelenich, O. V., S. O. Solopan, T. V. Kolodiazhnyi, Jean Marc Greneche, and Anatolii G. Belous. "Synthesis of Iron Oxide Nanoparticles by Different Methods and Study of their Properties." Solid State Phenomena 230 (June 2015): 108–13. http://dx.doi.org/10.4028/www.scientific.net/ssp.230.108.

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In this work, iron oxide nanoparticles have been synthesized by precipitation in diethylene glycol, by cryochemical synthesis, in microemulsions using surfactants Triton X-100, Brij-35 and CTAB. Comparative spectroscopic, thermal, X-ray diffraction, 57Fe zero-field Mössbauer and magnetic studies of the synthesized nanoparticles have been carried out. Magnetic fluids prepared from synthesized nanopowders have been characterized by calorimetric measurements of specific loss power (SLP).

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Nayan, Niraj, S. V. S. Narayana Murty, S. C. Sharma, K. Sreekumar, and Parameshwar Prasad Sinha. "Optimization of Homogenization Parameters of Al-Cu-Li Alloy Cast Ingots Using Calorimetry and Metallographic Techniques." Materials Science Forum 710 (January 2012): 557–62. http://dx.doi.org/10.4028/www.scientific.net/msf.710.557.

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In the present study, thermal treatments for homogenizing cast structures of Al-Cu-Li alloy AA2195 for improved workability are developed chiefly by empirical methods and detailed Differential Scanning Calorimetry (DSC) and microstructural characterization. DSC has been carried out on as-cast samples to establish the homogenization temperatures and avoid incipient melting. Homogenization time has been calculated empirically and microstructural characterization and DSC has been carriedout to after each cycle to validate the empirically established homogenization cycle. Homogenization cycle (435°C/8hrs+495°C/12hrs+525°C/32hrs) has been established for AA2195 alloy having an average grain size of 500μm based on calorimetric studies and microstructural examination.

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Jęczmionek, Łukasz. "Calculation of the molar heat of formation of fatty acid triglycerides from the heat of combustion of vegetable oils." Science, Technology and Innovation 11, no. 4 (2021): 8–15. http://dx.doi.org/10.5604/01.3001.0014.7528.

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The results of the research on estimation the molar heat of formation (enthalpy) of model triglycerides found in natural oils and fats are presented. In this work a calculation method and calorimetric one were used. It was found that combustion heat values determined by separate methods are comparable; their difference was a maximum of 155 kJ/kg, and thus was significantly lower than the tolerance for the calorimetric method according to PN 86/C-04062.

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Ishikura, Yuki, Jun Imaoka, Mostafa Noah, and Masayoshi Yamamoto. "Comparative Evaluation of Electrical and Calorimetric Methods to Estimate Core Loss in Powder Cores." IEEJ Journal of Industry Applications 8, no. 3 (2019): 386–93. http://dx.doi.org/10.1541/ieejjia.8.386.

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Kaur, Amandeep, Parampaul Kaur Banipal, and Tarlok Singh Banipal. "Local anesthetic-bovine serum albumin interactional behaviour: Characterization by volumetric, calorimetric, and spectroscopic methods." Journal of Molecular Liquids 243 (October 2017): 91–101. http://dx.doi.org/10.1016/j.molliq.2017.08.011.

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Drozd, Marek. "Mechanism of phase transition in guanidinium 4-nitrobenzoate studied by calorimetric and spectroscopic methods." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 241 (November 2020): 118663. http://dx.doi.org/10.1016/j.saa.2020.118663.

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Coletta, G., L. Gherardi, F. Gomory, et al. "Application of electrical and calorimetric methods to the AC loss characterization of cable conductors." IEEE Transactions on Appiled Superconductivity 9, no. 2 (1999): 1053–56. http://dx.doi.org/10.1109/77.783478.

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Hüttl, R., F. Ullrich, G. Wolf, A. Kirchner, M. Mertig, and W. Pompe. "Calorimetric methods for catalytic investigations of novel catalysts based on metallized S-layer preparations." Thermochimica Acta 440, no. 1 (2006): 13–18. http://dx.doi.org/10.1016/j.tca.2005.09.019.

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Yamagishi, K., S. Sekizawa, J. Ogawa, and O. Tsukamoto. "Measurement of temperature dependent AC losses in HTS bulk by electric and calorimetric methods." Journal of Physics: Conference Series 43 (June 1, 2006): 595–98. http://dx.doi.org/10.1088/1742-6596/43/1/146.

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Journal articles on the topic 'Calorimetric methods'

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