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Articoli di riviste sul tema "Solution temperature"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 1 febbraio 2022

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1

Gupta, Amarnath, B. Mohanty, and H. B. Bohidar. "Flory Temperature and Upper Critical Solution Temperature of Gelatin Solutions." Biomacromolecules 6, no. 3 (May 2005): 1623–27. http://dx.doi.org/10.1021/bm0492430.

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2

Asadova, A. H., and E. A. Masimov. "The solution-gel phase transition in aqueous solutions of agarose." Modern Physics Letters B 35, no. 08 (January 18, 2021): 2150147. http://dx.doi.org/10.1142/s0217984921501475.

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Thermal hysteresis and stability of agarose–water gelling systems were studied by the spectrophotometer for different concentrations at different temperatures. Gelation temperature depends on the concentration of agarose. With the increase in the concentration of agarose gelation temperature, strength of agarose increases too. With the increase in the concentration of polymer solvent–gel phase transition, gel melting happens at higher temperatures. The price of enthalpy was determined (150.0127 KC/mol). In gelation process, the phase separation is completed and in this process, the value of th

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3

Morgan, P. W. "Low-temperature solution polycondensation." Journal of Polymer Science Part C: Polymer Symposia 4, no. 2 (March 7, 2007): 1075–96. http://dx.doi.org/10.1002/polc.5070040225.

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4

Becker, M. "Nonlinear Transient Heat Conduction Using Similarity Groups." Journal of Heat Transfer 122, no. 1 (June 29, 1999): 33–39. http://dx.doi.org/10.1115/1.521434.

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Nonlinear response is studied using similarity groups. The nonlinear solution is similar to the linear solution except with properties evaluated at the local temperature and is consistent with reported empirical observations that, near the heat source, high-temperature properties are needed to predict cooling times to high temperatures and that low temperature properties are needed to predict cooling time to low temperatures. For position-dependent characteristics of the solution away from the source, like magnitudes and locations of peak temperatures, nonlinear and linear solutions are simila

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5

IZMAILOV, ALEXANDER F., and ALEXANDER R. KESSEL. "SOLUTION OF THE BCS MODEL." International Journal of Modern Physics A 04, no. 18 (November 10, 1989): 4991–5002. http://dx.doi.org/10.1142/s0217751x89002120.

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The exact calculation of the reduced BCS model quantum partition function in the region of temperatures T > Tc was carried out by the path integration method. The partition function demonstrates the critical behavior at some temperature Tc. It turns out that this temperature is larger than the critical temperature T'c obtained in the traditional theories which are valid in the temperature region T < T'c.

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6

Wei, Jinjia, Yasuo Kawaguchi, Bo Yu, and Ziping Feng. "Rheological Characteristics and Turbulent Friction Drag and Heat Transfer Reductions of a Very Dilute Cationic Surfactant Solution." Journal of Heat Transfer 128, no. 10 (February 24, 2006): 977–83. http://dx.doi.org/10.1115/1.2345422.

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Turbulent friction drag and heat transfer reductions and rheological characteristics of a very dilute cationic surfactant solution, cetyltrimethyl ammonium chloride (CTAC)/sodium salicylate (NaSal) aqueous solution, were experimentally investigated at various temperatures. It was found that there existed a critical temperature above which drag and heat transfer reductions disappeared and shear viscosities rapidly dropped to that of water. It was surmised that drag and heat transfer reductions had a certain relationship with rheological characteristics and a rheological characterization of CTAC

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7

Hu, Yingxue, Youn Young Shim, and Martin J. T. Reaney. "Flaxseed Gum Solution Functional Properties." Foods 9, no. 5 (May 25, 2020): 681. http://dx.doi.org/10.3390/foods9050681.

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Flaxseed gum (FG) is a by-product of flax (Linum usitatissimum L.) meal production that is useful as a food thickener, emulsifier, and foaming agent. FG is typically recovered by hot-water extraction from flaxseed hull or whole seed. However, FG includes complex polymer structures that contain bioactive compounds. Therefore, extraction temperature can play an important role in determining its functional properties, solution appearance, and solution stability during storage. These characteristics of FG, including FG quality, determine its commercial value and utility. In this study, FG solution

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8

Terazima, Masahide. "Temperature lens and temperature grating in aqueous solution." Chemical Physics 189, no. 3 (December 1994): 793–804. http://dx.doi.org/10.1016/0301-0104(94)00289-4.

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9

Van-Pham, Dan-Thuy, Tran Thi Bich Quyen, Pham Van Toan, Chanh-Nghiem Nguyen, Ming Hua Ho, and Doan Van Hong Thien. "Temperature effects on electrospun chitosan nanofibers." Green Processing and Synthesis 9, no. 1 (September 22, 2020): 488–95. http://dx.doi.org/10.1515/gps-2020-0050.

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AbstractEffects of the temperature of chitosan (CS) solutions as well as the temperature of the chamber on an electrospinning process were investigated. CS with a low molecular weight was dissolved in the solvent of trifluoroacetic acid/dichloromethane (70/30 v/v) at a concentration of 80 mg/mL for electrospinning. Both CS solution and chamber temperatures strongly affected the morphology of electrospun CS nanofibers. At the solution temperature and chamber temperature of 32°C, uniform CS nanofibers with an average diameter of 200 nm could be obtained. Although the chamber temperature is gener

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10

Jamal, Muhammad Asghar, Bushra Naseem, Junaid Hayat Khan, and Iqra Arif. "Temperature dependent solution properties of amino acids in colloidal solutions." Journal of Molecular Liquids 275 (February 2019): 105–15. http://dx.doi.org/10.1016/j.molliq.2018.11.046.

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11

Seuring, Jan, and Seema Agarwal. "Polymers with Upper Critical Solution Temperature in Aqueous Solution." Macromolecular Rapid Communications 33, no. 22 (September 7, 2012): 1898–920. http://dx.doi.org/10.1002/marc.201200433.

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12

Thammarakcharoen, Faungchat, and Jintamai Suwanprateeb. "Rapid Biomimetic Coating of Calcium Phosphate on Titanium: Effect of Soaking Time, Temperature and Solution Refreshing." Key Engineering Materials 690 (May 2016): 81–86. http://dx.doi.org/10.4028/www.scientific.net/kem.690.81.

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The influence of employing three different solution temperatures (23, 37 and 50 °C), three soaking times (2, 4 and 6 h) and two solution refreshing methods (Refreshed or Non-refreshed) in rapid biomimetic coating process on phase composition, functional groups, coating content and microstructure of the resulted coating was studied. Increasing soaking times and temperature increased the coating content in all cases regardless of the use of refreshed or non-refreshed accelerated calcium phosphate solution. The use of non-refreshed solution resulted in the lower rate of coating than that of refre

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13

Benakopoulos, Theofanis, William Vergo, Michele Tunzi, Robbe Salenbien, and Svend Svendsen. "Overview of Solutions for the Low-Temperature Operation of Domestic Hot-Water Systems with a Circulation Loop." Energies 14, no. 11 (June 7, 2021): 3350. http://dx.doi.org/10.3390/en14113350.

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The operation of typical domestic hot water (DHW) systems with a storage tank and circulation loop, according to the regulations for hygiene and comfort, results in a significant heat demand at high operating temperatures that leads to high return temperatures to the district heating system. This article presents the potential for the low-temperature operation of new DHW solutions based on energy balance calculations and some tests in real buildings. The main results are three recommended solutions depending on combinations of the following three criteria: district heating supply temperature,

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14

Burns, A. S., L. A. Stickler, and W. E. Stewart. "Solidification of an Aqueous Salt Solution in a Circular Cylinder." Journal of Heat Transfer 114, no. 1 (February 1, 1992): 30–33. http://dx.doi.org/10.1115/1.2911263.

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The situation of one-dimensional, transient inward solidification of a binary solution in a circular cylinder is studied numerically. The solution is assumed to be of a hypoeutectic initial concentration and to be initially at a superheated temperature above its initial melting point temperature. The boundary temperature of the cylinder is below that of its heterogeneous nucleation temperature and no supercooling occurs. The boundary temperatures and final solution concentrations are assumed to be above and below, respectively, the eutectic point of the solution. The finite difference numerica

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15

Yang, Jie, Li Xin Mao, and Liang Hua Xu. "Rheological Behavior of Polyacrylonitrile Solution." Advanced Materials Research 11-12 (February 2006): 403–6. http://dx.doi.org/10.4028/www.scientific.net/amr.11-12.403.

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The rheological properties and viscoelasticity of PAN/DMSO solutions were studied by means of revolving rheometer under the scan modes of steady shear rate and dynamic frequency. The effects of shear rate and temperature of PAN/DMSO solution on its Non-Newtonian viscous index, zero shear viscosity, activation energy of viscous flow and modulus of the solutions were studied. It was found that PAN/DMSO solution is a kind of pseudoplastic fluid. And the more temperature of solution, the less Non-Newtonian viscous index at steady experiment curve, the less the loss modulus and storage modulus of s

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16

Agafonov, Alexandr V., Konstantin V. Ivanov, and Olga V. Alekseeva. "LOW-TEMPERATURE SYNTHESIS OF BARIUM TITANITE IN AQUEOUS SOLUTION." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 61, no. 12 (December 12, 2018): 56–62. http://dx.doi.org/10.6060/ivkkt.20186112.5720.

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Barium titanate powder with average particle size near 300 nm was produced using the low-temperature synthesis. It was established using scanning electron microscopy that at the thermal treatment, the particles gradually decrease with the formation of polydisperse aggregates. Based on the thermogravimetric analysis of the synthesized powder held in air for 4 months, it was shown that along with the low-temperature phase, the sample contains a high-temperature phase of carbonates, which removes at ~ 900 °C. Sorption characteristics of barium titanate thermally treated at various temperatures we

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17

Swanson, Brian D. "How Well Does Water Activity Determine Homogeneous Ice Nucleation Temperature in Aqueous Sulfuric Acid and Ammonium Sulfate Droplets?" Journal of the Atmospheric Sciences 66, no. 3 (March 1, 2009): 741–54. http://dx.doi.org/10.1175/2008jas2542.1.

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Abstract Frozen fraction measurements made using a droplet free-fall freezing tube apparatus are presented and used, along with other recent laboratory measurements, to evaluate how well both the water activity idea and the translated melting-point curve idea of Koop et al. predict homogeneous freezing-point temperatures for aqueous ammonium sulfate and sulfuric acid solution droplets. The new freezing-point temperature datasets agree with the previous lowest-temperature results for both solutes. The lowest measured freezing-point temperatures for aqueous ammonium sulfate solutions agree with

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18

Jia, Di, Murugappan Muthukumar, He Cheng, Charles C. Han, and Boualem Hammouda. "Concentration Fluctuations near Lower Critical Solution Temperature in Ternary Aqueous Solutions." Macromolecules 50, no. 18 (September 7, 2017): 7291–98. http://dx.doi.org/10.1021/acs.macromol.7b01502.

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19

Tan, Lianjiang, Ajun Wan, and Ding Pan. "Viscoelasticity of concentrated polyacrylonitrile solutions: effects of solution composition and temperature." Polymer International 60, no. 7 (March 2, 2011): 1047–52. http://dx.doi.org/10.1002/pi.3041.

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20

Tager, A. A., A. P. Safronov, E. A. Berezyuk, and I. Yu Galaev. "Lower critical solution temperature and hydrophobic hydration in aqueous polymer solutions." Colloid & Polymer Science 272, no. 10 (October 1994): 1234–39. http://dx.doi.org/10.1007/bf00657775.

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21

Kanta Sharker, Komol, Yuki Ohara, Yusuke Shigeta, Shinji Ozoe, and Shin-ichi Yusa. "Upper Critical Solution Temperature (UCST) Behavior of Polystyrene-Based Polyampholytes in Aqueous Solution." Polymers 11, no. 2 (February 4, 2019): 265. http://dx.doi.org/10.3390/polym11020265.

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Strong polyampholytes comprising cationic vinylbenzyl trimethylammonium chloride (VBTAC) bearing a pendant quaternary ammonium group and anionic sodium p-styrenesulfonate (NaSS) bearing a pendant sulfonate group were prepared via reversible addition-fragmentation chain-transfer polymerization. The resultant polymers are labelled P(VBTAC/NaSS)n, where n indicates the degree of polymerization (n = 20 or 97). The percentage VBTAC content in P(VBTAC/NaSS)n is always about 50 mol%, as revealed by 1H NMR measurements, meaning that P(VBTAC/NaSS)n is a close to stoichiometrically charge-neutralized po

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22

Jeon, Han Yong. "Temperature Effects and pH Value on Free Swell Behaviors of Bentonite Solutions." Advanced Materials Research 983 (June 2014): 44–51. http://dx.doi.org/10.4028/www.scientific.net/amr.983.44.

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Swelling behaviors of powder and granular type sodium bentonites in permeate solutions such as NaCl, KCl, MgCl2, CaCl2, distilled water and in HCl and NaOH (with different pH values) under different temperatures were investigated. Swelling behaviors of these bentonites were dependent on strength, reactivity power and physical form of ion, and temperature and pH value of permeate solution. +1 ion solution showed higher swell volumes than +2 ion solution. Distilled water showed highest swell volumes among these tested solutions. Powder type sodium bentonite showed higher swells volume than granu

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23

Zhang, Zhihong, Heping Zhu, and Huseyin Guler. "Quantitative Analysis and Correction of Temperature Effects on Fluorescent Tracer Concentration Measurement." Sustainability 12, no. 11 (June 2, 2020): 4501. http://dx.doi.org/10.3390/su12114501.

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To ensure an accurate evaluation of pesticide spray application efficiency and pesticide mixture uniformity, reliable and accurate measurements of fluorescence concentrations in spray solutions are critical. The objectives of this research were to examine the effects of solution temperature on measured concentrations of fluorescent tracers as the simulated pesticides and to develop models to correct the deviation of measurements caused by temperature variations. Fluorescent tracers (Brilliant Sulfaflavine (BSF), Eosin, Fluorescein sodium salt) were selected for tests with the solution temperat

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24

Lucas, Sandrine, Monique Tohoué Tognonvi, Julien Soro, Sylvie Rossignol, and Jean Louis Gelet. "Consolidation of Sand by Alkaline Silicate Solution." Advances in Science and Technology 68 (October 2010): 84–89. http://dx.doi.org/10.4028/www.scientific.net/ast.68.84.

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Progress of fuse technology to reduce cost and to protect environment requires the understanding of physicochemical phenomena that govern the consolidation of the sand with alkaline silicate solution. In this context, this work concerns the agglomeration behaviours of sand with alkaline silicate solution. The effects of sand particles size and concentration of solutions are investigated at various temperatures. The main objective is to understand the interactions between sand and this alkaline solution during the impregnation of sand with sodium silicate solution and the drying leading to the

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25

Maslov, V. A., V. V. Voronov, L. D. Iskhakova, E. G. Yarotskaya, and P. P. Fedorov. "Mullite Synthesis from High-Temperature Solution." Inorganic Materials 55, no. 11 (November 2019): 1151–55. http://dx.doi.org/10.1134/s0020168519100091.

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26

Kitazawa, Nobuaki, Masami Aono, and Yoshihisa Watanabe. "LOW-TEMPERATURE SOLUTION PROCESSED ZnO NANOSTRUCTURES." International Journal of Materials Engineering and Technology 16, no. 3 (February 28, 2018): 71–86. http://dx.doi.org/10.17654/mt016030071.

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27

Takekoshi, T., J. E. Kochanowski, J. S. Manello, and M. J. Webber. "Polyetherimides. II. High-temperature solution polymerization." Journal of Polymer Science: Polymer Symposia 74, no. 1 (1986): 93–108. http://dx.doi.org/10.1002/polc.5070740111.

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28

Andryushin, K. P., L. A. Shilkina, I. N. Andryushina, S. I. Dudkina, D. I. Rudskiy, and L. A. Reznichenko. "Temperature stability of Na0.1K0.1Pb0.8Nb0.2Ti0.4Zr0.4O3 solid solution." Ferroelectrics 574, no. 1 (April 4, 2021): 23–28. http://dx.doi.org/10.1080/00150193.2021.1888045.

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29

Takamuku, Toshiyuki, Keisuke Nakamura, Mikito Ihara, and Toshio Yamaguchi. "Raman Scattering and X-ray Diffraction Studies on Zinc(II)Bromide Solutions in Methanol and N,N-Dimethylformamide in the Temperature Range 77-333 K." Zeitschrift für Naturforschung A 49, no. 12 (December 1, 1994): 1119–30. http://dx.doi.org/10.1515/zna-1994-1204.

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Abstract The structure of zinc(II) bromo complexes in methanol and N,N-dimethylformamide (DMF) (molar ratio [solvent]/[ZnBr2] = 10, temperature range 77 -333 K) has been investigated by Raman scattering and X-ray diffraction. In the methanol solution symmetric Zn - Br vibrations (γ1) of the dibromo- and tribromozinc(II) complexes were observed at 209 and 184 cm-1, respectively. With decreasing temperature the intensity of the γ1 band decreased for the dibromo and increased for the tribromo complex. In addition, the γ1 band for the tetrabromo complex appeared in the supercooled and glassy metha

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30

Kochetkova, T. D., and A. A. Pavlova. "Research of Water-Alcohol Solution Permittivity at Phase Transition by Radiophysics Method." Advanced Materials Research 1040 (September 2014): 356–59. http://dx.doi.org/10.4028/www.scientific.net/amr.1040.356.

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This study presents the research of water-alcohol solution phase transition by permittivity changing. Complex permittivity was measured by open-end-coaxial method in frequency range 500 MHz – 40 GHz. We varied temperature from 240 K to 310 K and ethanol content from 10 % to 80 %. Temperature dependencies of permittivity for water-alcohol solutions were obtained and the patterns of variation of those solidification temperatures were established.

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31

Kang, Chan-Mo, Jin Hwa Ryu, Hoon Kim, Yeon-Wha Oh Kyu-Ha Baek, and Lee-Mi Do. "Improved Thin-Film Transistor Performance of Low-Temperature, Solution-Processed Indium Oxide by Controlling Solution Temperature." Journal of Nanoscience and Nanotechnology 16, no. 8 (August 1, 2016): 8473–77. http://dx.doi.org/10.1166/jnn.2016.12495.

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Pallotta, Katie E., Rowland J. Elwell, Adwoa O. Nornoo, and Harold J. Manley. "Stability of Tobramycin and Ceftazidime in Icodextrin Peritoneal Dialysis Solution." Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis 29, no. 1 (January 2009): 52–57. http://dx.doi.org/10.1177/089686080902900108.

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Purpose The data describing the compatibility of tobramycin and ceftazidime in icodextrin-based peritoneal dialysis (PD) solution is limited. The objective of this study was to assess the chemical stability of tobramycin and ceftazidime in icodextrin PD solution in polyvinyl chloride containers. Methods Commercially available 2-L bags of icodextrin 7.5% PD solution were used for each sample. Nine tobramycin study samples were prepared by adding 80 mg tobramycin HCl to each bag. Nine ceftazidime samples were prepared by adding 1000 mg ceftazidime to each bag. Three bags of tobramycin–icodextrin

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Myers, BA, and WC Morgan. "Germination of the Salt-Tolerant Grass Diplachne fusca. II. Salinity Responses." Australian Journal of Botany 37, no. 3 (1989): 239. http://dx.doi.org/10.1071/bt9890239.

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The responses -of germination of the salt-tolerant grass Diplachne fusca (L.) Beauv. to salinity and various temperature regimes are described. At temperatures of 30/20°C (12 h light and dark periods), final germination was 70% in distilled water, decreased to 50% in 175 mol m-3 NaCl (π = - 0.8 MPa) and 7% in 380 mol m-3 NaCl (π = -1.8 MPa). Increasing salinity from 0-130mol m-3 NaCl decreased the final germination percentage, but did not modify the threshold temperatures (day or night temperature > 27°C) at which germination occurred. Presoaking in distilled water or 1% CaCl2· 2H20 solutio

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Bulychev, Nikolay, Frederik Wurst, Viktor Fomin, Thadeus Schauer, and Claus Eisenbach. "Nanoscale Effects in Temperature Induced Polymer Coatings." Chemistry & Chemical Technology 3, no. 3 (September 15, 2009): 209–12. http://dx.doi.org/10.23939/chcht03.03.209.

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In this paper the results of recent studies on the application of lower critical solution temperature (LCST) phenomena of polymer solutions to the surface modification of flat and spherical substrates are reported. It has been found that controlled polymer deposition can be achieved at temperatures exceeding LCST. The obtained polymer coating exhibits a peculiar surface morphology and, if particles are introduced, can be highly effective in pigment dispersions stabilizing. It has been established that the temperature induced polymer deposition can be carried out as the finely dispersed compone

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Milicev, Snezana, and Nevena Stevanovic. "Navier-Stokes-Fourier analytic solutions for non-isothermal Couette slip gas flow." Thermal Science 20, no. 6 (2016): 1825–33. http://dx.doi.org/10.2298/tsci160423221m.

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The explicit and reliable analytical solutions for steady plane compressible non-isothermal Couette gas flow are presented. These solutions for velocity and temperature are developed by macroscopic approach from Navier-Stokes-Fourier system of continuum equations and the velocity slip and the temperature jump first order boundary conditions. Variability of the viscosity and thermal conductivity with temperature is involved in the model. The known result for the gas flow with constant and equal temperatures of the walls (isothermal walls) is verified and a new solution for the case of different

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Singgih, Suwito, Moh Toifur, and Suryandari Suryandari. "Experimental Design in Constructing Low Temperature Sensor Based on Resistance Temperature Detector (RTD)." Indonesian Journal of Science and Education 4, no. 2 (October 1, 2020): 99. http://dx.doi.org/10.31002/ijose.v4i2.2758.

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<p>Thin film copper-based RTD still has a low TCR. Hence, plating a Cu-based RTD with nickel will develop a higher TCR. TCR is the sensitivity of RTD’s value in response to temperature change. The experimental design in constructing Cu/Ni thin film by using the electroplating method with a concentration of solution and electrode spacing’s variation has been done. Electroplating is performed with a concentration of solution and electrode spacing’s variations<em>.</em> Electroplating processed by limiting DC voltage to 6 volts. Electrolyte solutions composition were NiSO4, Ni2C

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Loening, Nikolaus M., and James Keeler. "Temperature accuracy and temperature gradients in solution-state NMR spectrometers." Journal of Magnetic Resonance 159, no. 1 (November 2002): 55–61. http://dx.doi.org/10.1016/s1090-7807(02)00120-9.

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Jung, P. A., D. Schwabe, and A. Scharmann. "Temperature-gradient-double-crucible method for high-temperature solution growth." Crystal Research and Technology 30, no. 1 (1995): 43–47. http://dx.doi.org/10.1002/crat.2170300109.

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Anderson, Alan J., Robert A. Mayanovic, and Thomas Lee. "The local structure of Ta(v) aqua ions in high temperature fluoride- and chloride-bearing solutions: Implications for Ta transport in granite-related postmagmatic fluids." Canadian Mineralogist 57, no. 6 (November 30, 2019): 843–51. http://dx.doi.org/10.3749/canmin.1900022.

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Abstract The local structure of Ta(V) in high-temperature fluoride- and chloride-bearing acidic solutions was investigated using in situ X-ray absorption spectroscopy (XAS). All XAS spectra were collected from two solutions, designated A and B, at beamline ID-20-C at the Advanced Photon Source, Argonne National Laboratory. Spectra were collected from solution A at 350 and 400 °C and from solution B at 25, 360, and 400 °C after the solutions were sealed in a hydrothermal diamond anvil cell. Solution A was prepared by dissolving Ta2O5 powder in 5% HF solution; solution B consisted of TaCl5 disso

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Mahdi, Yasmeen Salih, Asem Hassan Mohammed, and Alaa Kareem Mohammed. "Cellulose Fibers Dissolution in Alkaline Solution." Al-Khwarizmi Engineering Journal 14, no. 2 (March 14, 2019): 107–15. http://dx.doi.org/10.22153/kej.2018.11.005.

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In this study, NaOH dissolution method was applied to dissolve cellulose fibers which extracted from date palm fronds (type Al-Zahdi) taken from Iraqi gardens. In this process, (NaOH)-solution is brought into contact with the cellulose fibers at low temperature. Experiments were conducted with different concentrations of NaOH (4%, 6%, 8% and12%) weight percent at two cooling bath temperatures (-15 oC) and (-20oC). Maximum cellulose dissolution was 23 wt% which obtained at 8 wt% concentration of NaOH and at cooling bath temperature of -20oC. In order to enhance the cellulose fibers dissolution,

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Niskanen, Jukka, and Heikki Tenhu. "How to manipulate the upper critical solution temperature (UCST)?" Polymer Chemistry 8, no. 1 (2017): 220–32. http://dx.doi.org/10.1039/c6py01612j.

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In this mini-review, we discuss multi-stimuli-responsive polymers, which exhibit upper critical solution temperature (UCST) behavior mainly in aqueous solutions, and focus on examples where counter ions, electricity, light, or pH influence the thermoresponsiveness of these polymers.

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Leśniak, D., and A. Woźnicki. "Extrusion of AlCuMg Alloys with Simultaneous Solution Heat Treatment." Archives of Metallurgy and Materials 57, no. 1 (March 1, 2012): 19–31. http://dx.doi.org/10.2478/v10172-011-0148-z.

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Extrusion of AlCuMg Alloys with Simultaneous Solution Heat Treatment In the work, the experiments on extrusion of high-strength aluminium alloys (2014 and 2024) with solution heat treatment on the press were performed. The experimental study describes extrudates microstructure and mechanical properties in dependence on alloy chemical composition, mode of homogenization treatment and temperature-speed extrusion conditions. The optical microscopy and SEM/EDS characterization were supported by DSC analysis, enabling to determine the solidus temperatures of the alloys. The investigations revealed

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Le, Quang Thanh, Thanh Hai Pham, Quy Thi Cam Nguyen, Quoc Phong Truong, Thi Thanh Tam Nguyen, and Thuy-Hang Pham. "Optimization of preservation solutions to execute testing on cervical smear sample." Asian Journal of Medical Sciences 12, no. 6 (June 1, 2021): 34–37. http://dx.doi.org/10.3126/ajms.v12i6.34299.

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Background: The common methods to preserve cell for protein analyses are in cold condition or treated with freeze solution and packaging in dry ice for shipping. Solution which can preserve cervical cells at room temperature is preferable and cost consuming for laboratory testing. Aims and Objective: Research and optimized the storage and transport solution for cervical sample which can preserve cells at room temperature for laboratory testing. Materials and Methods: In this study, cervical specimens were collected in 3 different preservation solutions. Storage and transport of sam

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Roper and, Ryan T., and Matthew R. Jones. "Benchmark Solution for the Prediction of Temperature Distributions During Radiofrequency Ablation of Cardiac Tissue." Journal of Biomechanical Engineering 126, no. 4 (August 1, 2004): 519–22. http://dx.doi.org/10.1115/1.1785810.

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Several studies on radiofrequency (RF) ablation are aimed at accurately predicting tissue temperature distributions by numerical solution of the bioheat equation. This paper describes the development of a solution that can serve as a benchmark for subsequent numerical solutions. The solution was obtained using integral transforms and evaluated using a C program. Temperature profiles were generated at various times and for different convection coefficients. In addition, a numerical model was developed using the same assumptions made in obtaining the benchmark solution. Comparison of surface and

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Graves, William R., and Lorna C. Wilkins. "Growth of Honey Locust Seedlings during High Root-zone Temperature and Osmotic Stress." HortScience 26, no. 10 (October 1991): 1312–15. http://dx.doi.org/10.21273/hortsci.26.10.1312.

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Growth of honey locust (Gleditsia triacanthos var. inermis Willd.) seedlings was studied during exposure to reduced osmotic potential (ψπ) and high temperature in the root zone. Half-sib plants were cultured in solution. Root-zone temperature was increased from ambient (23C) to 35C for 0, 6, 12, or 24 hours·day -l. Within each temperature treatment, solution ψπ of -0.05, – 0.10, and – 0.20 MPa were maintained by additions of polyethylene glycol (PEG) 8000. Root and shoot dry weights decreased with increasing exposure to 35C among seedlings in -0.05-MPa solution and decreased for seedlings in -

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46

HOGUE, E. J., and G. H. NEILSEN. "EFFECT OF ROOT TEMPERATURE AND VARYING CATION RATIOS ON GROWTH AND LEAF CATION CONCENTRATION OF APPLE SEEDLINGS GROWN IN NUTRIENT SOLUTION." Canadian Journal of Plant Science 66, no. 3 (July 1, 1986): 637–45. http://dx.doi.org/10.4141/cjps86-084.

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Apple seedlings (Malus domestica Borkh.) were grown at high (256 mg L−1) and low 32 mg L−1) Ca concentration in Long Ashton nutrient solutions at 8, 12, 16 and 20 °C root temperature. Top and root dry weight of seedlings increased as temperature increased. Leaf Ca, K and Mn concentrations increased with root temperature from 12 to 20 °C. Leaf Zn concentration decreased over the same temperature range at low solution Ca concentration, leaf Mg concentration was lowest at 16 °C while leaf Fe was unaffected by temperature. In further experiments, seedlings were grown at 12 and 16 °C root temperatu

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47

Moreno-Piraján, Juan Carlos, Vanessa Silenia García-Cuello, and Liliana Giraldo-Gutierréz. "Thermodynamic and Calorimetric Study of Acetylsalicylic Acid (Aspirin) and Ibuprofen." E-Journal of Chemistry 8, no. 3 (2011): 1298–308. http://dx.doi.org/10.1155/2011/402395.

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Enthalpies of solution and dilution of aqueous solutions of sodium acetylsalicylic acid salt and ibuprofen salt were measured with an isoperibolic calorimeter at 293.15 K, 298.15 K, 303.15 K, 308.15 K and 318.15 K. The concentration of the electrolyte was restricted to the solubility of the salt at various temperatures and did not exceed 0.035–0.057 mol kg-1, depending on the temperature studied. The Virial coefficients were derived from Pitzer's model and the excess thermodynamic functions of both the solution and the components of the solution were calculated. An analysis of the thermodynami

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Gavrilin, Ilya. "Effect of Process Temperature on the Growth Kinetic and Structure of Ge Nanowires Formed by Galvanostatic Electrodeposition Using in Nanoparticles." Solid State Phenomena 312 (November 2020): 80–85. http://dx.doi.org/10.4028/www.scientific.net/ssp.312.80.

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In this work, germanium nanowires (GeNWs) were fabricated by galvanostatic electrodeposition using In nanoparticles from water solutions at different temperatures. It was found that in the temperature range from 10°C to 60°C there was no significant change in the structure of GeNWs, and the average diameter was about 40 nm. The growth time of GeNWs increases linearly with increasing temperature of the electrolyte solution. However, the structure of GeNW obtained at a solution temperature of 90°C has changed. It was shown that these GeNWs have a core-shell structure: the core is a crystalline G

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Abdelkader, Bassel, and Mostafa H. Sharqawy. "Temperature Effects and Entropy Generation of Pressure Retarded Osmosis Process." Entropy 21, no. 12 (November 27, 2019): 1158. http://dx.doi.org/10.3390/e21121158.

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Pressure retarded osmosis (PRO) is considered as one of the promising and new techniques to generate power. In this work, a numerical model was used to study the effect of the flow streams temperature on the performance of the PRO process and entropy generation. The variation of the feed solution and draw solution temperatures, pressure difference, concentration difference, and flow rates on the power density and entropy generation were discussed. The model results were validated with experimental measurements obtained from literature and showed a good agreement with the model predictions. It

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Tan, Li Wen, Quan Ji, Jian Jun Zhang, Feng Jun Wang, Feng Yu Quan, and Yan Zhi Xia. "Rheological Behavior of Blend Spinning Solution of Sodium Alginate and Carbon Black." Advanced Materials Research 332-334 (September 2011): 268–74. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.268.

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Abstract (sommario):

Rheological properties of blend spinning solution of sodium alginate and carbon black (SA/CB) were investigated. The results reported that blend spinning solutions were non-newtonian fluids. The apparent viscosity and structural viscosity index increased with increasing CB content in SA spinning solution, but the non-newtonian index decreased, both demonstrated the blend solution was sensitive to shear rates. Blend spinning solution with 6% CB had large flow activation energy (Eη), so the temperature must be controlled exactly in spinning. Temperature had similar impact on sample spinning solu

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