Application of Kudryashov method for the Ito equations

In this present work, the Kudryashov method is used to construct exact solutions of the (1+1)- dimensional and the (1+2)-dimensional form of the generalized Ito integro-differential equation. The Kudryashov method is a powerful method for obtaining exact solutions of nonlinear evolution equations. This method can be applied to non-integrable equations as well as integrable ones

Application of Bernoulli Sub-ODE Method For Finding Travelling Wave Solutions of Schrodinger Equation Power Law Nonlinearity

In this paper, the exact travelling wave solution of the Schr¨odinger equation with power law nonlinearity is studied by the Sub-ODE method. It is shown that the method is one of the most effective approaches for finding exact solutions of nonlinear differential equations

Application of Pneumatic Flow Injection-Tandem Spectrometer System for Chromium Speciation

In this approach, a pneumatic flow injection-tandem spectrometer system, without a delivery pump, has been developed to study chromium speciation. In this system, suction force of pneumatic nebulizer of a flame atomic absorption spectrometer has been used for solution delivery through the manifold. Cr(VI) and total Cr concentrations were determined using UV-Vis and FAAS spectrometers, respectively. The Cr(III) was determined by difference. The calibration curves were linear up to 10 μg mL−1 and 20 μg mL−1 for Cr(VI) and total Cr with detection limit of 0.12 μg mL−1 and 0.07 μg mL−1 for Cr(VI) and Cr(III), respectively. The midrange precision and accuracy are less than 1.98% and ± 2.50% for two species, respectively, at a sampling rate of 100 h−1. This system was applied for the determination of the chromium species in spiked and natural waters as well as industrial waters

Topological and Non-Topological Soliton Solutions of the Coupled Klein-Gordon-Schrodinger and the Coupled Quadratic Nonlinear Equations

Abstract: In this paper, two solitary wave solutions are obtained for the Coupled Klein-Gordon-Schrodinger and Coupled quadratic nonlinear equations by the ansatz method. Both topological and non-topological solitary wave solutions are obtained

Applications of He’s variational principle method and modification of truncated expansion method to the coupled Klein–Gordon Zakharov equations

In this paper, we establish exact solutions for the coupled nonlinear Klein–Gordon Zakharov equations. The He’s semi-inverse and the modification of truncated expansion methods are used to construct exact solutions of this equation. We apply He’s semi-inverse method to establish a variational theory for the coupled nonlinear Klein–Gordon Zakharov equations. Based on this formulation, a solitary solution can be easily obtained using the Ritz method. The modification of truncated expansion method is used to construct exact solutions of the coupled nonlinear Klein–Gordon Zhakhrov equations. Moreover, it is observed that the suggested techniques are compatible with the physical nature of such problems

How does Identity Theory contribute to the Continuance Use of E-learning: The mediating role of Inertia and moderating role of computer Self-efficacy

Despite e-learning’s rapid growth and significant benefits, especially during the COVID-19 pandemic, retaining students in this educational environment is a critical challenge in the post-corona era. Therefore, our research was conducted to explore how we can promote the continuance use of e-learning (CUEL) platforms. More specifically, this study examines how identity, inertia, and computer self-efficacy affect CUEL. Data were collected from 384 users and provided support for the model. The results indicated that social identity, relational identity, and inertia are critical determinants of CUEL. Furthermore, inertia mediates the relation between social identity and CUEL. In addition, we found that computer self-efficacy moderates the relation of inertia and relational identity with CUEL, but its moderating effect on the influence of social identity and CUEL is not supported. Finally, the theoretical and practical implications of this study are discussed.</p

Modified montmorillonite nanolayers for nano-encapsulation of biomolecules

Vitamin B6 was nano-encapsulated in between modified montmorillonite nanolayers. Results indicated that electrostatic interaction forces dominate the adsorption onto different sites of the nanolayers. The successful nano-encapsulation was achieved when the interlayers spaces of the nanolayer were saturated with cations of Na+ or Ca2+ resulted in adsorption of vitamin B6 in between nanosheets. At these conditions, controlled pH-responsive desorption properties were detected and vitamin B6 was released mostly from the interlayer spaces. The presented modified montmorillonite could be used for nanoencapsulation of drugs and biomolecules with high protection of carrying materials during storage and even through the digestion process

Simultaneous Voltammetric Measurement of Ascorbic Acid, Epinephrine, Uric Acid and Tyrosine at a Glassy Carbon Electrode Modified with Nanozeolite-Multiwall Carbon Nanotube

In this study, incorporation of iron ion-doped natrolite nanozeolite, multi-wall carbon nanotubes into chitosan-coated glassy carbon electrode for the simultaneous determination of ascorbic acid, epinephrine, uric acid and tyrosine is studied. The results show that the combination of multi-wall carbon nanotubes and iron ion-doped natrolite zeolite causes a dramatic enhancement in the sensitivity of ascorbic acid, epinephrine, uric acid and tyrosine quantification. The sensor gave the separated and sharp voltammetric responses of analytes in four well-defined linear sweep voltammetry peaks. Under the optimum conditions, the calibration curve were linear up to 1.82 × 10-3, 3.15 × 10-3 , 1.50 × 10-4 and 6.29 × 10-4 M with detection limits 1.82 × 10-6, 1.33× 10-6, 4.09 × 10-8 and 2.01× 10-7 M (S/N= 3) for ascorbic acid, epinephrine, uric acid  and tyrosine, respectively. The analytical performance of this sensor has been evaluated for simultaneous detection of four analytes in human serum and urine samples

Frequency of Major Histocompatibility Antigens Class I in Mazandaran Province

Background and purpose: Major histocompatibility antigens are the most polymorphic components of the immune system. The purpose of this study was to determine the frequency of human leukocyte antigens (HLA) in a population in Mazandaran province, Iran. Materials and methods: In a cross sectional study, peripheral blood samples were obtained from 550 people in Immunogenetics Research Center affiliated with Mazandaran University of Medical Sciences, 2016-2021. The types of HLA class 1 antigens (A-B-C) were studied using SSP-PCR. Results: HLA-A * 24, HLA-B * 35 and HLA-C * 04 were found to be the most common alleles in the population studied. Conclusion: HLA diversity plays a major role in developing some diseases. So, it should be investigated in anthropological studies and finding a suitable donor in bone marrow transplantation. In fact, more extensive studies are required to draw a new horizon in the association between HLA and diseases in different ethnicities