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Many industries use non-Newtonian ternary hybrid nanofluids (THNF) because of how well they control rheological and heat transport. This being the case, this paper aims to numerically study the Casson-Williamson THNF flow over a yawed cylinder, considering the effects of several slips and an inclined magnetic field. The THNF comprises Al₂O₃-TiO₂-SiO₂ nanoparticles because they improve heat transmission due to large thermal conductivity.

Applying suitable nonsimilarity variables transforms the coupled highly dimensional nonlinear partial differential equations (PDEs) into a system of nondimensional PDEs. To accomplish the goal of achieving the solution, an implicit finite difference approach is used in conjunction with Quasilinearization. With the assistance of a script written in MATLAB, the numerical results and the graphical representation of those solutions were ascertained.

As the Casson parameter β increases, there is an improvement in the velocity profiles in both chord and span orientations, while the gradients Re1/2Cf, Re1/2C¯f reduce for the same variations of β. The velocities of Casson THNF are greater than those of Casson-Williamson THNF. Approximately, a 202% and a 32% ascension are remarked in the magnitudes of Re1/2Cf and Re1/2C¯f for Casson-Williamson THNF than the Casson THNF only. When velocity slip attribute S1 jumps to 1 from 0.5, magnitude of both F(ξ,η) and Re1/2Cf fell down and it is reflected to be 396% at ξ=1, Wi=1 and β=1. An augmentation in thermal jump results in advanced fluid temperature and lower Re−1/2Nu. In particular, about 159% of down drift is detected when S2 taking 1.

There is no existing research on the effects of Casson-Williamson THNF flow over a yawed cylinder with multiple slips and an angled magnetic field, according to the literature.

This paper aims to advance the concept of “menstrual justice” by building on the comprehensive framework developed by Margaret E. Johnson (2019), which integrates legal rights, social justice and intersectional analysis. By applying Johnson’s insights and human rights frameworks to menstrual health management, the study advocates for state interventions to safeguard women labourers from exploitative practices that endanger their reproductive health and to uphold their menstrual rights.

A case study methodology is used to scrutinize menstrual injustices experienced by women labourers in precarious employment conditions. Specifically, it examines two cases, the mass hysterectomies in Beed, Maharashtra and the administration of unidentified pharmaceuticals to women in Tamil Nadu factories to mitigate menstrual pain and maximize productivity.

The findings reveal severe violations pertaining to menstrual justice, with practices deeply rooted in socioeconomic deprivation and systemic neglect. These issues subject female workers to various forms of gender-based violence that goes beyond physical abuse, raising critical concerns about menstrual justice and human rights violations.

The study’s findings have limited generalizability due to the specific contexts of the case study. Furthermore, the absence of insights from managers/supervisors, and factory owners limits a comprehensive understanding of the policies and factors leading to neglect of menstrual management practices.

The findings of the study will prompt the medical industry to initiate research into medications that can effectively alleviate period pain while minimizing harmful side effects. Current treatments often come with significant drawbacks, highlighting the need for safer and more effective alternatives. Addressing this research gap is vital for achieving menstrual equity, as it ensures that individuals suffering from menstrual pain have access to relief that does not jeopardize their overall health. Advancing research in this area will not only enhance the quality of life for menstruators but also contribute to a more equitable and inclusive approach to menstrual health care.

The findings support reframing menstrual friendly labour policies including comprehensive sexual and reproductive health information to everyone, regardless of gender, to reduce misinformation and stigma associated with menstruation at workplaces. Additionally, the study proposes the introduction of reusable menstrual products like menstrual cups to overcome period poverty. Thus, ensuring access to these resources is crucial for enabling informed decision-making, promoting gender equality, addressing health disparities and fostering the development of menstrual-friendly workplace policies.

This study, by using a case study-based approach, has thoroughly examined the issues and challenges faced by female labourers in fields and factories. It uniquely identifies the inadequacies in menstrual management provisions for female workers in India and advocates for a human rights-based approach to ensure that menstruators can manage their menstrual health safely. Unlike most existing studies, which primarily focus on product usage and the stigma or myths surrounding menstruation, this study advances menstrual justice by calling for labour policy reforms and medical research to lessen menstrual pain without compromising menstruators’ health. These reforms aim to provide working women with adequate rest and necessary provisions during menstruation. Addressing these gaps is essential and has been largely overlooked in global health policies.