Статті в журналах: "Solution-types"

1

Pym, Anthony, and Esther Torres-Simón. "The pedagogical value of translation solution types." Perspectives 23, no. 1 (July 3, 2014): 89–106. http://dx.doi.org/10.1080/0907676x.2014.928334.

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2

Janssens, Maddy, Luc Sels, and Inge Van Den Brande. "Multiple Types of Psychological Contracts: A Six-cluster Solution." Human Relations 56, no. 11 (November 2003): 1349–78. http://dx.doi.org/10.1177/00187267035611004.

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3

Tikhanychev, Oleg V. "On the solution of some types of optimization problems." Journal of Physics: Conference Series 1679 (November 2020): 032082. http://dx.doi.org/10.1088/1742-6596/1679/3/032082.

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4

Pokorný, Jaroslav, Milena Pavlíková, and Zbyšek Pavlík. "Durability of Two Types of HPC at Sulphate Solution Environment." Key Engineering Materials 722 (December 2016): 66–71. http://dx.doi.org/10.4028/www.scientific.net/kem.722.66.

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Sulphate attack of concrete and cement composites comprises sulphate ions migration into the material porous space and their following reaction with hydration products in the presence of water. Newly formed compounds initiate filling of porous space and volume expansion. Sulphate corrosion phenomenon still belongs to the main mechanism affecting the durability and service life of concrete structures. This paper deals with the investigation of sulphate resistance of two types of High Performance Concrete (HPC) exposed for 168 days to sodium sulphate water solution and reference environment of distilled water. Corrosive action is monitored at chosen time periods non-destructively, i.e. using measurement of length and mass changes, basic physical characteristics and dynamic moduli. Additionally, destructive tests of mechanical parameters are realised. For samples immersed in distilled water, improvement in mechanical strength is observed for the both studied HPCs. In case of HPC C I containing crushed aggregate, the improvement of mechanical resistivity is observed for samples exposed to sulphate solution for 140 days only. For other researched period of sulphate exposure, mechanical strength decreased in comparison with the reference values. On the other hand, HPC C II exhibited mechanical resistivity to sulphate action in all examined time periods of sulphate solution exposure.

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5

Duranay, Murat, Mehmet Kanbay, Faruk Turgut, Mustafa Altay, and Ali Akcay. "Comparison of Incidence of Peritonitis between Peritoneal Dialysis Solution Types." Nephron Clinical Practice 106, no. 1 (April 2, 2007): c57—c60. http://dx.doi.org/10.1159/000101485.

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6

Seljée, R. R., and H. C. M. de Swart. "Three types of redundancy in integrity checking: An optimal solution." Data & Knowledge Engineering 30, no. 2 (June 1999): 135–51. http://dx.doi.org/10.1016/s0169-023x(99)00007-5.

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7

Sweilam, Nasser Hassan, Tamer Mostafa Al-Ajami, and Ronald H. W. Hoppe. "Numerical Solution of Some Types of Fractional Optimal Control Problems." Scientific World Journal 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/306237.

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We present two different approaches for the numerical solution of fractional optimal control problems (FOCPs) based on a spectral method using Chebyshev polynomials. The fractional derivative is described in the Caputo sense. The first approach follows the paradigm “optimize first, then discretize” and relies on the approximation of the necessary optimality conditions in terms of the associated Hamiltonian. In the second approach, the state equation is discretized first using the Clenshaw and Curtis scheme for the numerical integration of nonsingular functions followed by the Rayleigh-Ritz method to evaluate both the state and control variables. Two illustrative examples are included to demonstrate the validity and applicability of the suggested approaches.

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8

Chidume, C. E., and H. Zegeye. "Iterative solution of nonlinear equations of accretive and pseudocontractive types." Journal of Mathematical Analysis and Applications 282, no. 2 (June 2003): 756–65. http://dx.doi.org/10.1016/s0022-247x(03)00252-x.

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9

Petrovskaya, N. B. "Two Types of Solution Overshoots in Discontinuous Galerkin Discretization Schemes." Communications in Mathematical Sciences 3, no. 2 (2005): 235–49. http://dx.doi.org/10.4310/cms.2005.v3.n2.a9.

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10

Exton, H. "The exact solution of two new types of Schrodinger equation." Journal of Physics A: Mathematical and General 28, no. 23 (December 7, 1995): 6739–41. http://dx.doi.org/10.1088/0305-4470/28/23/023.

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11

Fayans, A. M., and V. Yu Kneller. "About the ontology of task types and methods of their solution." Ontology of designing 10, no. 3 (October 5, 2020): 273–95. http://dx.doi.org/10.18287/2223-9537-2020-10-3-273-295.

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12

Fridrichová, Marcela, Karel Dvořák, and Iveta Hájková. "Influence of Dehydrating Solution Types on Technological Properties of Alpha-Hemihydrate." Advanced Materials Research 1065-1069 (December 2014): 1907–10. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.1907.

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Sulphur binders originate by burnout of calcium sulphate dihydrate at different temperatures. All types are classified in air mortars therefore they can solidify, harden and remain stable only on air.

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13

Gudić, Senka, Aleš Nagode, Kristina Šimić, Ladislav Vrsalović, and Sonja Jozić. "Corrosion Behavior of Different Types of Stainless Steel in PBS Solution." Sustainability 14, no. 14 (July 21, 2022): 8935. http://dx.doi.org/10.3390/su14148935.

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Anodic and spontaneous corrosion of different types of stainless steel (AISI 304L, AISI 316L and 2205 DSS) in phosphate-buffered saline solution (PBS, pH = 7.4) at 37 °C (i.e., in simulated physiological solution in the human body) were examined using open circuit potential measurements, linear and cyclic polarization, and electrochemical impedance spectroscopy methods. After the anodic and spontaneous corrosion, the surface of the tested samples was investigated by light and scanning electron microscopy (SEM) with EDS analysis. It has been established that the tendency of the examined steel materials towards local corrosion decreases in the order: AISI 304L < AISI 316L < 2205 DSS. Namely, the possibility of repassivation and the resistance to local corrosion increases in the same order. The corrosion resistance of steel samples at open circuit potential is a consequence of forming a natural oxide film with a bi-layer structure and consists of an inner barrier and an outer porous film. The inner barrier film has a small thickness and extremely high resistance, while the outer porous film is much thicker but also has significantly lower resistance. The inner barrier layer mainly prevents corrosion of examined steel samples in order: AISI 304L < AISI 316L < 2205 DSS. Light microscopy and SEM/EDS analysis after pitting and spontaneous corrosion showed damage on the AISI 304L and AISI 316L surface, while the surface of 2205 DSS was almost undamaged by corrosion.

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14

Chidume, C. E. "Iterative solution of nonlinear equations of the monotone and dissipative types." Applicable Analysis 33, no. 1-2 (January 1989): 79–86. http://dx.doi.org/10.1080/00036818908839862.

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15

Ju, S. H., and K. J. S. Kung. "Mass types, element orders and solution schemes for the richards equation." Computers & Geosciences 23, no. 2 (March 1997): 175–87. http://dx.doi.org/10.1016/s0098-3004(97)85440-4.

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16

Sikora, W., O. V. Gurin, and B. N. Syromyatnikov. "Solid solution ordering types-relation between the symmetric and combinatorial methods." Surface and Coatings Technology 28, no. 3-4 (July 1986): 359–63. http://dx.doi.org/10.1016/0257-8972(86)90092-7.

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17

Fujimoto, Taku, Yoshiteru Mizukoshi, Yoshio Nagata, Yasuaki Maeda, and Ryuichiro Oshima. "Sonolytical preparation of various types of metal nanoparticles in aqueous solution." Scripta Materialia 44, no. 8-9 (May 2001): 2183–86. http://dx.doi.org/10.1016/s1359-6462(01)00900-9.

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18

Koch, E. "What types of reactions in solution reveal a reliable Arrhenius line?" Journal of Thermal Analysis 33, no. 1 (March 1988): 177–83. http://dx.doi.org/10.1007/bf01914597.

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19

Mahmoud, S. A., M. A. Semary, Z. M. Farid, and N. El-Naquib. "On two types of creep behaviour of CuZn solid solution." Materials Science and Engineering: A 118 (October 1989): 107–11. http://dx.doi.org/10.1016/0921-5093(89)90062-2.

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20

Heima, Hiroaki, Tetsuji Yamada, and Yoshitaka Takayama. "Latest Solution for Utilizing Various Types of Gas Fuel in DAIHATSU DIESEL." Marine Engineering 54, no. 3 (May 1, 2019): 340–44. http://dx.doi.org/10.5988/jime.54.340.

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21

Choi, Youngmin, Sujeong Heo, Munjeong Kim, Jeongsub Lee, Young Chul Park, and Jong-Ki Jeon. "Catalytic Decomposition of Energetic Liquid Solution Over Various Types of Hexaaluminate Catalysts." Journal of Nanoscience and Nanotechnology 20, no. 11 (November 1, 2020): 7114–18. http://dx.doi.org/10.1166/jnn.2020.18842.

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A hexaaluminate support was prepared by a co-precipitation method, and a metal (Cu, Pt, or Ir) was impregnated on the support to prepare a powdered catalyst. After that, organic and inorganic binders were added to the powdery catalyst and then pellets were formed. The so-formed catalysts were heat-treated at 1200°C, and their physicochemical properties were analyzed by N2-adsorption, X-ray diffraction (XRD), X-ray fluorenscence (XRF), and scanning electron microscopy (SEM). The decomposition activity of the catalysts on an ammonium dinitramide (ADN)-based liquid propellant was evaluated repeatedly, and the effects of catalyst composition and morphology on low temperature decomposition activity and durability were investigated. It was confirmed that the Cu-hexa-pellet, Pt-hexa-pellet, and Ir-hexa-pellet catalysts could be recovered and reused as a catalyst for decomposition of an ADN-based liquid monopropellant. The initial activity and the thermal stability of the Cu-hexa-pellet catalyst for the decomposition of ADN-based liquid monopropellants were better than for the other catalysts. The better activity of the Cu-hexa-pellet catalyst seems to be because the dispersion of the copper was higher than the metal dispersion in the other two catalysts.

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22

Matsumoto, Yasumichi, Takashi Tazawa, Nobuo Muroi, and Ei‐ichi Sato. "New Types of Anodes for the Oxygen Evolution Reaction in Acidic Solution:." Journal of The Electrochemical Society 133, no. 11 (November 1, 1986): 2257–62. http://dx.doi.org/10.1149/1.2108389.

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23

Fischer, Ondřej. "Wind-excited vibrations—Solution by passive dynamic vibration absorbers of different types." Journal of Wind Engineering and Industrial Aerodynamics 95, no. 9-11 (October 2007): 1028–39. http://dx.doi.org/10.1016/j.jweia.2007.01.027.

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24

Djurić, Isidora, Ivan Mihajlović, Živan Živković, and Radislav Filipović. "MODELING THE COMPENSATION EFFECT FOR DIFFERENT BAUXITE TYPES LEACHING IN NaOH SOLUTION." Chemical Engineering Communications 197, no. 12 (August 20, 2010): 1485–99. http://dx.doi.org/10.1080/00986445.2010.484996.

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25

Guo, X., C. He, X. Sun, X. Liang, X. Chen, and X. Y. Liu. "Adsorption of phenol from aqueous solution by four types of modified attapulgites." International Journal of Environmental Science and Technology 16, no. 2 (May 15, 2018): 793–800. http://dx.doi.org/10.1007/s13762-018-1699-6.

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26

Lepage, François. "La naissance de la théorie des types." Articles 11, no. 2 (January 9, 2007): 277–97. http://dx.doi.org/10.7202/203258ar.

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Résumé La théorie des types que Bertrand Russell proposa en 1908 ne se voulait pas une solution ad hoc au problème des contradictions, elle prétendait plutôt être la solution naturelle, celle que tout le monde reconnaîtra comme la solution attendue. En fait, il s'agit d'une théorie philosophique qui concrétise un projet grandiose: réduire les mathématiques à la logique. Le présent texte se propose d'examiner les thèses russelliennes et la dynamique de leur évolution de 1903 à 1907, c'est-à-dire des Principles à la naissance de la théorie des types.

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27

Pertile, Eva, Tomáš Dvorský, Vojtěch Václavík, and Silvie Heviánková. "Use of Different Types of Biosorbents to Remove Cr (VI) from Aqueous Solution." Life 11, no. 3 (March 14, 2021): 240. http://dx.doi.org/10.3390/life11030240.

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This article summarizes the results of a research study that was focused on the possibility of removing Cr (VI) from aqueous solution, using low-cost waste biomaterial in a batch mode. A set of seven biosorbents was used: Fomitopsis pinicola, a mixture of cones, peach stones, apricot stones, Juglans regia shells, orange peels, and Merino sheep wool. Three grain fractions (fr. 1/2, fr. 0.5/1.0, and fr. 0/0.5 mm) of biosorbents were studied. The aim was to find the most suitable biosorbent that can be tested with real samples. The influence of other factors on the course of biosorption was studied as well (chemical activation of the biosorbent, pH value, rotation speed during mixing, temperature, and the influence of biosorbent concentration). The use of chemical activation and adjustment of the pH to 1.1 to 2.0 make it possible to increase their sorption capacity and, for some biosorbents, to shorten the exposure times. Two kinetic models were used for the analysis of the experimental data, to explain the mechanism of adsorption and its possible speed control steps: pseudo-first and pseudo-second-order. The pseudo-second-order kinetic model seems to be the most suitable for the description of the experimental data. The thermodynamic parameters suggest that the biosorption was endothermic and spontaneous. In the biosorption equilibrium study, the adsorption data were described by using Langmuir and Freundlich adsorption isotherms. The Langmuir model was applicable to describe the adsorption data of all biosorbents. Both models are suitable for chemically treated sheep fleece and peach stones.

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28

Alumaa, P., U. Kirso, V. Petersell, and E. Steinnes. "HEAVY METAL SORPTION BY DIFFERENT ESTONIAN SOIL TYPES AT LOW EQUILIBRIUM SOLUTION CONCENTRATIONS." Proceedings of the Estonian Academy of Sciences. Chemistry 50, no. 2 (2001): 104. http://dx.doi.org/10.3176/chem.2001.2.05.

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29

Ting, Kien Hua, Lai Soon Lee, Stefan Pickl, and Hsin-Vonn Seow. "Shared Mobility Problems: A Systematic Review on Types, Variants, Characteristics, and Solution Approaches." Applied Sciences 11, no. 17 (August 29, 2021): 7996. http://dx.doi.org/10.3390/app11177996.

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The Shared Mobility Problems (SMP) with the rideshare concept based on sharing a vehicle are fast becoming a trend in many urban cities around the world. Examples of these problems are like ridesharing, carpooling, taxisharing, buspooling, vanpooling, and multi-modal ridesharing. This is the new way to access transportation services by those who are propelling the sharing economy, where access rather than ownership is the new norm. This paper provides a systematic review of SMP using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analysis) method. A total of 110 papers from the last decade are selected from 12 abstracts and citation databases to be reviewed and classified. This is done based on the problem types, variants, characteristics, and solution approaches. The current trends and analysis of the survey findings are also summarised. From this systematic review, it is observed that both the time window and multi-objective problems are popular among the researchers, while the minimisation of the total cost is the main concern in the literature of the SMP. Both static and dynamic cases of the SMP are the most researched where heuristic and metaheuristic approaches are widely adopted by the researchers in the literature. Finally, challenges and suggestions for future work are discussed and highlighted.

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30

Zhukovsky, K. "Solution of Some Types of Differential Equations: Operational Calculus and Inverse Differential Operators." Scientific World Journal 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/454865.

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We present a general method of operational nature to analyze and obtain solutions for a variety of equations of mathematical physics and related mathematical problems. We construct inverse differential operators and produce operational identities, involving inverse derivatives and families of generalised orthogonal polynomials, such as Hermite and Laguerre polynomial families. We develop the methodology of inverse and exponential operators, employing them for the study of partial differential equations. Advantages of the operational technique, combined with the use of integral transforms, generating functions with exponentials and their integrals, for solving a wide class of partial derivative equations, related to heat, wave, and transport problems, are demonstrated.

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31

Dubrovsky, Victor Anatoly. "Two types of patrol ships: ‘solution trees’ for pre-designing and concept designing." Ships and Offshore Structures 7, no. 4 (December 2012): 449–53. http://dx.doi.org/10.1080/17445302.2011.630214.

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32

Shaban, Malihe, Saeed Kazem, and Elyas Shivanian. "Fully discrete Tau solution for some types of non-local heat transport equations." Applicable Analysis 97, no. 12 (August 3, 2017): 2142–56. http://dx.doi.org/10.1080/00036811.2017.1359558.

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33

Niehaus, Oliver, Paula M. Abdala, Rachid St Touzani, Boniface P. T. Fokwa, and Rainer Pöttgen. "Three structure types and intermediate cerium valence in the solid solution CeRu1–xNixSn." Solid State Sciences 40 (February 2015): 36–43. http://dx.doi.org/10.1016/j.solidstatesciences.2014.12.007.

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34

Ma, L., and S. X. Tu. "Removal of arsenic from aqueous solution by two types of nano TiO2 crystals." Environmental Chemistry Letters 9, no. 4 (November 23, 2010): 465–72. http://dx.doi.org/10.1007/s10311-010-0303-1.

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35

Kordialik-Bogacka, Edyta, and Anna Diowksz. "Metal uptake capacity of modified Saccharomyces pastorianus biomass from different types of solution." Environmental Science and Pollution Research 21, no. 3 (September 18, 2013): 2223–29. http://dx.doi.org/10.1007/s11356-013-2144-5.

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36

Ke-Jia, Liu, Lu Huai-Xin, and Zhang Yong-De. "Exact Solution for a Chain of Coupled Oscillators with Two Types of Atom." Chinese Physics Letters 17, no. 4 (April 1, 2000): 241–42. http://dx.doi.org/10.1088/0256-307x/17/4/003.

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37

Vlasichev, G. N. "A method of numerical solution of one-dimensional stefan problems of two types." Journal of Engineering Physics and Thermophysics 65, no. 3 (September 1993): 896–902. http://dx.doi.org/10.1007/bf00862934.

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38

LIU, ZHENGRONG, and YONG LIANG. "THE EXPLICIT NONLINEAR WAVE SOLUTIONS AND THEIR BIFURCATIONS OF THE GENERALIZED CAMASSA–HOLM EQUATION." International Journal of Bifurcation and Chaos 21, no. 11 (November 2011): 3119–36. http://dx.doi.org/10.1142/s0218127411030556.

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In this paper, we study the explicit nonlinear wave solutions and their bifurcations of the generalized Camassa–Holm equation [Formula: see text]Not only are the precise expressions of the explicit nonlinear wave solutions obtained, but some interesting bifurcation phenomena are revealed.Firstly, it is verified that k = 3/8 is a bifurcation parametric value for several types of explicit nonlinear wave solutions.When k < 3/8, there are five types of explicit nonlinear wave solutions, which are(i) hyperbolic peakon wave solution,(ii) fractional peakon wave solution,(iii) fractional singular wave solution,(iv) hyperbolic singular wave solution,(v) hyperbolic smooth solitary wave solution.When k = 3/8, there are two types of explicit nonlinear wave solutions, which are fractional peakon wave solution and fractional singular wave solution.When k > 3/8, there is not any type of explicit nonlinear wave solutions.Secondly, it is shown that there are some bifurcation wave speed values such that the peakon wave and the anti-peakon wave appear alternately.Thirdly, it is displayed that there are other bifurcation wave speed values such that the hyperbolic peakon wave solution becomes the fractional peakon wave solution, and the hyperbolic singular wave solution becomes the fractional singular wave solution.

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39

Bettig, Bernhard, and Jami Shah. "Solution Selectors: A User-Oriented Answer to the Multiple Solution Problem in Constraint Solving." Journal of Mechanical Design 125, no. 3 (September 1, 2003): 443–51. http://dx.doi.org/10.1115/1.1587749.

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The development of solid modeling to represent the geometry of designed parts and the development of parametric modeling to control the size and shape have had significant impacts on the efficiency and speed of the design process. Designers now rely on parametric solid modeling, but often are frustrated by a problem that unpredictably causes their sketches to become twisted, contorted, or take an unexpected shape. Mathematically, this problem, known as the “multiple solution problem” occurs because the dimensions and geometric constraints yield a set of non-linear equations with many roots. In practice, this situation occurs because the dimensioning and geometric constraint information given in a CAD model is not sufficient to unambiguously and flexibly specify which configuration the user desires. This paper first establishes that only explicit, independent solution selection declarations can provide a flexible mechanism that is sufficient for all situations. The paper then describes the systematic derivation of a set of “solution selector” types by considering the occurrences of multiple solutions in combinations of mutually constrained geometric entities. The result is a set of eleven basic solution selector types and two derived types that incorporate topological information. In particular, one derived type “concave/convex” is user-oriented and may prove to be particularly useful.

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40

Zahroh, Millatuz. "PENENTUAN JENIS FUNGSI BASIS RADIAL DALAM DUAL RECIPROCITY BOUNDARY ELEMENT METHOD." Majalah Ilmiah Matematika dan Statistika 21, no. 1 (March 26, 2021): 53. http://dx.doi.org/10.19184/mims.v21i1.23650.

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Problems involving modified Helmholtz equation are considered in this paper. To solve the problem numerically, dual reciprocity boundary element method (DRBEM) is employed. Some stage have been passed, using reciprocal relation to approximate boundary integral and domain integral in modified Helmholtz equation . Until, linear equation system are obtained in matrix form. MATLAB is used to calculate the solutions of Solutions of are compared between the exact solution and the numerical solution of modified Helmholtz equation. The numerical results are based on the using of three types of radial basis function to approximate domain integral, such as polinomial, poliharmonik spline and linear types. The solutions show that the polinomial and poliharmonik spline types are more stable and approach to exact solution than linear types.

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41

Goga, Vladimír, Juraj Paulech, and Michal Váry. "Cooling of Electrical Cu Conductor with PVC Insulation – Analytical, Numerical and Fluid Flow Solution." Journal of Electrical Engineering 64, no. 2 (March 1, 2013): 92–99. http://dx.doi.org/10.2478/jee-2013-0013.

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This paper describes calculation of cooling process of electrical Cu conductor with PVC insulation. Three types of solutions were performed.Analytical solution considers free convection and radiation effect of heat transfer. Numerical solution was performed by finite element method (FEM) using software ANSYS Workbench and fluid flow solution was performed by computational fluid dynamics (CFD) analysis in software ANSYS CFX. Results from all types of solutions were compared with results of the experimental measurement.

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42

Raad Fawzyi, Noor, and Ali Hussian Shuaa. "MATHEMATICAL MODEL OF TIP-HYPHA ANASTOMOSIS AND DICHOTOMOUS BRANCHING WITH TIP DEATH DUE TO OVERCROWDING." Akkad Journal Of Multidisciplinary Studies 1, no. 4 (June 25, 2022): 248–54. http://dx.doi.org/10.55202/ajms.v1i4.100.

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In this paper, we investigated the case of fungi growth when more types of dichotomous branching are combined. These consume all energy s Lateral branching, Tip-Hypha Anastomosis, Tip- anastomosis, and TiP death due to overcrowding species. We use mathematical models such as partial differential equations (PDEs) to illustrate biological phenomena of various types. We need some time for fungi to grow; that is true. We will use the numerical solution to obtain an approximate solution for this system. This solution's steps are stationary, phase, and traveling states. Solution and determination of the initial condition We will use the code to recognize the behavior of the types

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43

Purwandari, E., Misto, R. Hidayat, Supriyadi, and B. E. Cahyono. "Verdet constant of various types of honey and sugar solution analyzed at different concentration." Journal of Physics: Conference Series 1825, no. 1 (February 1, 2021): 012074. http://dx.doi.org/10.1088/1742-6596/1825/1/012074.

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44

Granados, Paola, Sergio Mireles, Engil Pereira, Chu-Lin Cheng, and James Jihoon Kang. "Effects of Biochar Production Methods and Biomass Types on Lead Removal from Aqueous Solution." Applied Sciences 12, no. 10 (May 17, 2022): 5040. http://dx.doi.org/10.3390/app12105040.

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Biochar has proven its potential in removing heavy metal ions from water. The objective of this study was to evaluate locally obtained biomass feedstocks for biochar production and their efficiency as a sorbent for aqueous lead (Pb2+) removal. The biomass feedstocks consisted of avocado seed, avocado peel, grapefruit peel, and brown seaweed, which represent agricultural and marine biomasses. The biochar materials were produced in two different methods: (1) a laboratory tube furnace at 300 °C and (2) a Do-It-Yourself (DIY) biochar maker, “BioCharlie Log”. The biochars were characterized for selected physicochemical properties, and batch adsorption tests with 10 mg Pb2+ L−1 were conducted. All biochars exhibited >90% Pb2+ removal with the avocado seed and grapefruit peel biochars being the most effective (99%) from the tube-furnace-produced biochars. BioCharlie-produced-biochars showed similar Pb2+ removal (90–97%) with brown seaweed and avocado seed biochars being the most effective (97%). Land-based biochars showed a higher carbon content (>53%) than the brown seaweed biochar (28%), which showed the highest ash content (68%). Our results suggested that oxygen-containing surface functional groups in land-based biochar and mineral (ash) fraction in marine-based biochar play a key role in Pb2+ removal.

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Vaško, Alan, Viera Zatkalíková, and Václav Kaňa. "Corrosion Resistance of SiMo- and SiCu-Types of Nodular Cast Iron in NaCl Solution." System Safety: Human - Technical Facility - Environment 2, no. 1 (March 1, 2020): 191–98. http://dx.doi.org/10.2478/czoto-2020-0023.

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AbstractNodular cast irons are used in a wide range of industrial applications, especially in the automotive industry. SiMo-type of nodular cast iron is suitable for high-temperature applications, for example the exhaust manifolds of the combustion engines; SiCu-type of nodular cast iron is used in various components of tribotechnical units. These automotive components often work in a corrosive environment. Therefore, the aim of this paper is to compare the corrosion resistance of two types of the nodular cast irons (SiMo-type and SiCu-type). Corrosion resistance was determined by the exposure immersion test at ambient temperature. Specimens of both types of nodular cast iron were immersed in 3.5 % NaCl solution (to simulate sea water) and gradually removed from the solution after 1, 2, 4 and 8 weeks. Subsequently, the weight loss (g) and the average corrosion rate (g m−2 day−1) were calculated. Experimental results show that nodular cast iron alloyed by Si and Mo has higher corrosion resistance than the nodular cast iron alloyed with Si and Cu. Moreover, the mechanical properties (evaluated by tensile test, impact bending test and hardness test) and fatigue properties of both types of nodular cast iron has been compared in the paper.

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Walter, W., Kenneth L. Kuttler, John W. Hilgers, and Thomas H. Courtney. "The Solution of an Evolution Equation Describing Certain Types of Mechanical and Chemical Interaction." Applicable Analysis 19, no. 2-3 (May 1985): 75–88. http://dx.doi.org/10.1080/00036818508839535.

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Markova, Evgeniia, and Inna Sidler. "Numerical solution of the age structure optimization problem for basic types of power plants." Yugoslav Journal of Operations Research 29, no. 1 (2019): 81–92. http://dx.doi.org/10.2298/yjor171015009m.

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Our paper addresses an integral model of the large electric power system optimal development. The model takes into account the age structure of the main equipment, which is divided into several types regarding its technical characteristics. This mathematical model is a system of Volterra type integral equations with variable integration limits. The system describes the balance between the given demand for electricity, the commissioning of new equipment and the dismantling of obsolete equipment, as well as the shares of different types of power plants in the total composition of the electric power system equipment. Based on the developed model, we got numerical solution to the problem of finding the optimal strategy for replacing equipment with a minimum of the cost functional. The case study is the Unified Electric Power System of Russia. Calculations of the forecast for development of the electric power system of Russia until 2050 were made using real-life data.

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Kumagai, Yuta, Atsushi Kimura, Mitsumasa Taguchi та Masayuki Watanabe. "Hydrogen Production by γ-Ray Irradiation from Different Types of Zeolites in Aqueous Solution". Journal of Physical Chemistry C 121, № 34 (21 серпня 2017): 18525–33. http://dx.doi.org/10.1021/acs.jpcc.7b03532.

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Zhu, Xiuping, Weihua He, and Bruce E. Logan. "Influence of solution concentration and salt types on the performance of reverse electrodialysis cells." Journal of Membrane Science 494 (November 2015): 154–60. http://dx.doi.org/10.1016/j.memsci.2015.07.053.

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Nakagawa, Hiroko, Kumiko Ohtsuka, Katsuhito Sugahara, Chika Kobayashi, Yuichi Masuoka, Koh-ichi Yamada, and Masami Kawase. "Peptidehelicenes in solution and gel: chiral discrimination through interactions between two types of helixes." Tetrahedron: Asymmetry 21, no. 6 (April 2010): 659–64. http://dx.doi.org/10.1016/j.tetasy.2010.03.040.

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