ABSTRACT

Two iterative techniques for obtaining numerical solutions of nonlinear equations are presented in this paper, with proven convergence orders of eight and eleven respectively. Our analysis shows that our schemes exhibit higher efficiency indexes compared to certain recent methods. Numerical examples are provided to investigate the performance of the proposed techniques, along with verification of their theoretical order of convergence on these examples.

Keywords:  Nonlinear Equation; Iterative Method; Convergence Order.

ABSTRACT

This case study, conducted on the principle of Critical Race Theory (CRT) and Social Justice, draws upon the perception  of the holistic (social, emotional and economic) inclusion experienced by Black, Indigenous, and People of Color Mexican students (here identified as BIPOCMS) who currently are (or were  at any moment between 1990 and early 2024) enrolled in a  Predominantly White Institutions (PWI) located in Predominantly White Nations (PWN).

Factors not formally related to educational opportunities in PWN limited at some point in the past, and might keep currently limiting in some cases, the level of inclusion of students self-identified as BIPOCMS, mostly impacted by misconceptions related to place of origin, phenotype, or gender (self-gender conception).

Population of study: 11 participants from the central part of México (comprising the States of Querétaro, Puebla, Estadi de México, Morelos, Hidalgo), aged between twenty-one and fifty years old when enrolled  in a PWI, and who did not identify themselves as White at the moment of the conduction of this study.

Methods: Former and/or current Mexican students studying in PWI and residing in PWN, between 1990 and 2024, were first contacted by word of mouth and through social networks (Facebook and whatsapp specifically), and invited  to answer a detailed questionnaire, previously structured through “Google Forms”, to obtain information about their perception on social inclusion prevailing in PWI in PWN

Results: More than half of the participants (six in total) of this  study do not/did not indicated  to experience/have experienced  a holistic inclusion at the moment of their studies in a PWI inside a PWN, while the same number of them even acknowledged to have somehow experienced microaggressions, defined for the resource to be answered  as “any action, gesture or subtle comment  with no different intention from belittling  and/or denigrating someone based on  his/her/their race, culture, gender (self-gender) conceptions and sexual preferences” by the performer of the present study.

Keywords: Black, Indigenous and People Of Color (BIPOC) Mexican Students,, inclusion, segregation, education, social interaction, Predominantly White Institutions (P.W.I), Predominantly White Nations (P.W.N).

ABSTRACT

Generating laser particles in an inexpensive and simple way remains one of the main challenges and problems. Despite many previous research efforts related to finding ways to generate nanoparticles because of their importance in our daily lives in various fields, especially medical, most of these methods are either costly or complex. This paper addresses the possibility of generating nanoparticles by sparking in a simplified manner with inexpensive and scalable tools. In order to achieve this, the researcher used simplified materials to design and fabricate an electrical circuit consisting of (diode bridge, capacitor, transistor, battery and copper electrodes). This simple circuit provided many pulses and led to the generation of copper nanoparticles. A taser (electric shock) was also used to experiment with particle generation and proved to be effective as well. In the end, the research shows the success of this circuit in generating nanoparticles, although there are some flaws that need to be addressed in this simplified circuit.

Keywords:  Laser particles; Laser Nanomaterials; Nanomaterials manufacturing; Taser (Electric Shock); Copper Nanoparticles

ABSTRACT

New Schiff base compounds were prepared by reactions between Sulphanilic acid with different amino acids (Phenylalanine, Asparagine, and Arginine).The synthesized Schiff compounds were showed   antibacterial and antifungal activities , Schiff base (Arginine, Asparagine and phenylalanine) of the tested products revealed significant antimicrobial effect against bacteria, In general, the antimicrobial activity for the Schiff base products was more effective against Gram-positive than Gram-negative bacteria strains. Some of physicochemical properties were calculated and revealed H-bond donors and acceptors to construct activity, also the properties of absorption, molecular weight, molecular formula, surface area and rotatable bonds. In addition, the interactions between the synthesized compounds were estimated by using docking protocol, also the types of interactions as H-Bond, Vander Waals and Carbon H –Bond were recorded different of the synthesized compounds.

Keywords:   Sulphanilic Acid; Schiff Bases; Amino Acids (Arginine, Asparagine, Phenylalanine); Physiochemical Properties; Antibacterial and Antifungal Activity.