No abstract

This study was aimed to determine the changes of the local anchovy meal which is known as hamsi kaygana in Turkey during cold storage at +4°C ± 1°C. Physicochemical (pH, TVB‐N, TMA‐N, and TBA) shelf life analyses were carried out for hamsi kaygana samples. It was confirmed that the pH values obtained from research groups were within the limit values of the literature. No statistically significant difference was observed (p > .05) between control, stinging nettle, and rosemary groups that were within all created product groups on 12th day of storage, and the observed difference was only present in cumin group (p < .05). Upon examining TVB‐N (Total Volatile Basic Nitrogen) values on 12th day of storage, we saw the lowest TVB‐N value (17.01 ± 0.21 mg/100 g) was at stinging nettle group. However; it was found out that highest TVB‐N value belonged to cumin group with the value of 19.38 ± 0.42 mg/100 g. It was found that 12th day TBA (Thiobarbituric Acid) values of all other groups except control group did not exceed limit values. Among TMA‐N (Trimethylamine Nitrogen) values of all groups on 12th storage period, the lowest value belonged to cumin group samples. While the highest TMA‐N value was found as 14.70 ± 0.30 in control group samples. Therefore, the results showed us that using dried herb and spices in hamsi kaygana production and the storage of the products have an influence on shelf life.

In this paper, we consider a class of normalized harmonic functions in the unit disk satisfying a third-order differential inequality and we investigate several properties of this class such as close to convexity, coefficient bounds, growth estimates, sufficient coefficient condition and convolution. Moreover, as an application, we construct harmonic polynomials involve Gaussian hypergeometric function which belong to the considered class. We also provide examples illustrating graphically with the help of Maple.

In this work, the dynamics of traveling waves of an improved nonlinear space-time fractional Schrödinger's equation with spatio-temporal dispersion in addition to group-velocity dispersion are studied. This equation models the propagation of solitons through nano optical fibers. The fractional derivative form is considered in the meaning of conformable fractional derivative. The exp(−φ (ξ)) algorithm will be carried out for retrieving the optical soliton solutions containing the form of kink and multi-soliton shapes. In addition, some graphical simulations of solutions are provided for better understanding the physical phenomena.

The convolution of convex harmonic univalent functions in the unit disk, unlike analytic functions, may not be convex or even univalent. The main purpose of this work is to develop previous work involving the convolution of convex harmonic functions. Briefly, we obtain under which conditions the convolution of a right half-plane harmonic mapping having a dilatation −z and a slanted half-plane harmonic mapping with β having a dilatation e iμ ρ+z 1+ρz (|ρ| < 1 and μ ∈ R) is univalent and convex in the direction −β. We also provide an example illustrating graphically with the help of Maple to illuminate the result.