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Published: 17 November 2019
by MDPI
Fractal and Fractional, Volume 3; doi:10.3390/fractalfract3040052

Abstract: Viscoelastic pipeline conveying fluid is analyzed with an improved variable fractional order model for researching its dynamic properties accurately in this study. After introducing the improved model, an involuted variable fractional order, which is an unknown piecewise nonlinear function for analytical solution, an equation is established as the governing equation for the dynamic displacement of the viscoelastic pipeline. In order to solve this class of equations, a numerical method based on shifted Legendre polynomials is presented for the first time. The method is effective and accurate after the numerical example verifying. Numerical results show that how dynamic properties are influenced by internal fluid velocity, force excitation, and variable fractional order through the proposed method. More importantly, the numerical method has shown great potentials for dynamic problems with the high precision model.
Published: 17 November 2019
by MDPI
Materials, Volume 12; doi:10.3390/ma12223772

Abstract: Surfactant-modified clay minerals are known for their good sorption properties of both organic and inorganic compounds from aqueous solutions. However, the current knowledge regarding the effect of both cationic and nonionic surfactants on the properties of bentonite is still insufficient. Bentonite, with montmorillonite as the base clay, was modified with hexadecethyltrimethylammonium bromide (a cationic surfactant) in the amount of 1.0 cation exchange capacity (CEC) of bentonite and varying concentrations of t-octylphenoxypolyethoxyethanol (Triton X-100, a nonionic surfactant). We aimed to improve the understanding of the effect of nonionic and cationic surfactants on clay minerals. The modified bentonites were characterized by X-ray diffraction (XRD), thermogravimetric analysis/differential thermal analysis (TG/DTA), Fourier transform infrared spectrometry (FTIR), field emission scanning electron microscopy (SEM) and specific surface area and pore volume (BET). According to our results, the presence of a cationic surfactant significantly increased the amount of the adsorbed nonionic surfactant. Moreover, an increase in the concentration of nonionic surfactants is also associated with an increase in the effectiveness of the modification process. Our results indicate that the amount of nonionic surfactant used has a significant effect on the properties of the obtained hybrid material. Modification of bentonite with a nonionic surfactant did not cause an expansion of the interlayer space of smectite, regardless of the presence of a cationic surfactant. The modification process was found to significantly decrease the specific surface area of bentonite. Improvement of hydrophobic properties and thermal stability was also observed.
Published: 17 November 2019
by MDPI
Sustainability, Volume 11; doi:10.3390/su11226464

Abstract: The purpose of this study was to achieve supply chain sustainability by considering Just in Time (JIT) in return vehicle usage. In response to a general increase in modern environmental awareness, consumer and government attention towards product and service compliance with environmental protection standards has increased. Consequently, manufacturers and stakeholders are pressured to use eco-friendly supply chains. In this paper, we analyzed the JIT model, a transportation network that ensure agile responses and delivery of goods in a supply chain, which reduces inventory costs. We then compared two return vehicle transportation scenarios. In the first, goods were transported from the central warehouse to the distribution base, and the return vehicle delivered recyclable packaging materials back to the central distribution warehouse. In the second scenario, goods were transported from the manufacturer to the distribution center (warehouse) more frequently, leading to reduced inventory. We then utilized the aforementioned JIT system with ILOG CPLEX12.4 to ascertain which scenario would produce the lowest carbon emissions for the lowest total cost.
Published: 17 November 2019
by MDPI
Mathematics, Volume 7; doi:10.3390/math7111124

Abstract: In this article we have developed a new explicit four-step linear method of fourth algebraic order with vanished phase-lag and its first derivative. The efficiency of the method is tested by solving effectively the one-dimensional time independent Schrödinger’s equation. The error and stability analysis are studied. Also, the new method is compared with other methods in the literature. It is found that this method is more efficient than these methods.
Published: 17 November 2019
by MDPI
Mathematics, Volume 7; doi:10.3390/math7111125

Abstract: In this work, we investigate the generalized Hyers-Ulam stability of the Apollonius type additive functional equation in modular spaces with or without Δ 2 -conditions. We study the same problem in fuzzy Banach spaces and β -homogeneous Banach spaces. We show the hyperstability of the functional equation associated with the Jordan triple product in fuzzy Banach algebras. The obtained results can be applied to differential and integral equations with kernels of non-power types.
Natsu Tanikawa, Kazuki Honma, Sciprofile linkFumi Tatsuzawa
Published: 17 November 2019
Scientia Horticulturae, Volume 257; doi:10.1016/j.scienta.2019.108609

The publisher has not yet granted permission to display this abstract.
Lucky Paudel, Josh Clevenger, Sciprofile linkCecilia McGregor
Published: 17 November 2019
Scientia Horticulturae, Volume 257; doi:10.1016/j.scienta.2019.108665

Abstract: Egusi watermelon (Citrullus mucosospermus), a close relative of sweet watermelon, is an economically important crop grown in many West African countries for its protein and lipid rich edible seeds. Egusi watermelon seeds have a thick, fleshy mucilaginous seed coat layer surrounding the seed coat which is unique to egusi watermelon. The egusi seed trait is controlled by a single recessive Mendelian locus, eg, located on chromosome 6 from 6.75 Mb to 11.03 Mb. This region is 4.28 Mb wide and contains 241 candidate genes. The region lacks adequate markers for fine mapping and for marker-assisted selection (MAS) of the egusi trait. In this study, we used QTL-seq to validate the position of the eg locus and to identify SNP markers to refine the locus. A genomic region associated with the egusi trait was confirmed on chromosome 6 from 5.25 Mb to 7.85 Mb partially overlapping the previously mapped eg locus. SNPs identified from QTL-seq were used to design Kompetitive Allele Specific PCR (KASP™) assays for refining the eg locus. The eg locus was remapped at 86.3 cM on the genetic map, co-segregating with marker UGA6_7026576. The refined eg locus is 398.25 Kb long, extending from 6.95 Mb to 7.35 Mb, containing 30 candidate genes. Additional validation of the markers in a diversity panel and the validation population identified marker UGA6_7026576 as associated with the egusi phenotype and useful for MAS.
Sciprofile linkMagda Andréia Tessmer, Beatriz Appezzato-Da-Glória, Ricardo Alfredo Kluge
Published: 17 November 2019
Scientia Horticulturae, Volume 257; doi:10.1016/j.scienta.2019.108675

The publisher has not yet granted permission to display this abstract.
Elisa Luciani, Sciprofile linkAlberto Palliotti, Sergio Tombesi, Tiziano Gardi, Maurizio Micheli, Julian Garcia Berrios, Claudia Zadra, Sciprofile linkDaniela Farinelli
Published: 17 November 2019
Scientia Horticulturae, Volume 257; doi:10.1016/j.scienta.2019.108659

The publisher has not yet granted permission to display this abstract.
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