Availability of assistive technologies (ATs) to children with disabilities in Bulawayo central district (BCD) in Zimbabwe.

Availability of assistive technologies (ATs) to children with disabilities is a critical human right enshrined in United Nations (UN) treaties and frameworks such as the United Nations Conventions on the Rights of Persons with Disabilities (UNCRPD), the United Nations Conventions on Rights of the Child (UNCRC), and United Nations 2030 Agenda for Sustainable Development. ATs optimize functionality, independence, and enhance educational experiences of children with disabilities. The study explored availability of ATs to children with disabilities in Bulawayo Central District (BCD) in Zimbabwe.

Working with Waste: Hazards and Mitigation Strategies Used by Waste Pickers in the Inner City of Durban.

Informal waste pickers in cities across the Global South divert significant amounts of tonnage from landfills. This diversion contributes towards a sustainable environment and better public health practices. Informal workers globally derive livelihoods from collecting, sorting, and selling recyclable waste.

A mathematical model for entropy generation in a Powell-Eyring nanofluid flow in a porous channel.

The continuous generation of entropy leads to exergy destruction which reduces the performance of a physical system. Hence, entropy minimization becomes necessary. New applications of nanofluids due to their enhanced thermo-physical properties has spurred new studies into the heat transfer and entropy generation rate in nanofluids in the last decade.

Modelling the spatiotemporal dynamics of chemovirotherapy cancer treatment.

Chemovirotherapy is a combination therapy with chemotherapy and oncolytic viruses. It is gaining more interest and attracting more attention in the clinical setting due to its effective therapy and potential synergistic interactions against cancer. In this paper, we develop and analyse a mathematical model in the form of parabolic non-linear partial differential equations to investigate the spatiotemporal dynamics of tumour cells under chemovirotherapy treatment.

Spatio-Temporal Variation and Futuristic Emission Scenario of Ambient Nitrogen Dioxide over an Urban Area of Eastern India Using GIS and Coupled AERMOD-WRF Model.

The present study focuses on the spatio-temporal variation of nitrogen dioxide (NO2) during June 2013 to May 2015 and its futuristic emission scenario over an urban area (Durgapur) of eastern India. The concentration of ambient NO2 shows seasonal as well as site specific characteristics. The site with high vehicular density (Muchipara) shows highest NO2 concentration followed by industrial site (DVC- DTPS Colony) and the residential site (B Zone), respectively.

On a bivariate spectral relaxation method for unsteady magneto-hydrodynamic flow in porous media.

The paper presents a significant improvement to the implementation of the spectral relaxation method (SRM) for solving nonlinear partial differential equations that arise in the modelling of fluid flow problems. Previously the SRM utilized the spectral method to discretize derivatives in space and finite differences to discretize in time. In this work we seek to improve the performance of the SRM by applying the spectral method to discretize derivatives in both space and time variables.

The Effects of Thermal Radiation on an Unsteady MHD Axisymmetric Stagnation-Point Flow over a Shrinking Sheet in Presence of Temperature Dependent Thermal Conductivity with Navier Slip.

In this paper, the magnetohydrodynamic (MHD) axisymmetric stagnation-point flow of an unsteady and electrically conducting incompressible viscous fluid in with temperature dependent thermal conductivity, thermal radiation and Navier slip is investigated. The flow is due to a shrinking surface that is shrunk axisymmetrically in its own plane with a linear velocity. The magnetic field is imposed normally to the sheet.

The Effect of Thermophoresis on Unsteady Oldroyd-B Nanofluid Flow over Stretching Surface.

There are currently only a few theoretical studies on convective heat transfer in polymer nanocomposites. In this paper, the unsteady incompressible flow of a polymer nanocomposite represented by an Oldroyd-B nanofluid along a stretching sheet is investigated. Recent studies have assumed that the nanoparticle fraction can be actively controlled on the boundary, similar to the temperature.

Analysis of virotherapy in solid tumor invasion.

Cancer treatment is an inexact science despite traditional cancer therapies. The traditional cancer treatments have high levels of toxicity and relatively low efficacy. Current research and clinical trials have indicated that virotherapy, a procedure which uses replication-competent viruses to kill cancer cells, has less toxicity and a high efficacy.

A bivariate Chebyshev spectral collocation quasilinearization method for nonlinear evolution parabolic equations.

This paper presents a new method for solving higher order nonlinear evolution partial differential equations (NPDEs). The method combines quasilinearisation, the Chebyshev spectral collocation method, and bivariate Lagrange interpolation. In this paper, we use the method to solve several nonlinear evolution equations, such as the modified KdV-Burgers equation, highly nonlinear modified KdV equation, Fisher's equation, Burgers-Fisher equation, Burgers-Huxley equation, and the Fitzhugh-Nagumo equation.

Effect of immunotherapy on the response of TICLs to solid tumour invasion.

There is clinical evidence that some people have lived with a benign tumour for their entire life time. This is explained by cancer dormancy which is attributed to the interaction of tumour infiltrating cytotoxic lymphocytes (TICLs) with tumour cells. We present two mathematical models to study the mechanism of interaction of TICLs with tumour cells, with and without clinical intervention.

Dispersion characteristics of blood during nanoparticle assisted drug delivery process through a permeable microvessel.

Nanoparticle assisted drug delivery holds considerable promise as a means of next generation of medicine that allows for the intravascular delivery of drugs and contrast agents. We analyze the dispersion characteristics of blood during a nanoparticle-assisted drug delivery process through a permeable microvessel. The contribution of molecular and convective diffusion is based on Taylor's theory of shear dispersion.

Magnetic drug targeting in a permeable microvessel.

A mathematical model is presented for predicting magnetic targeting of multifunctional carrier particles that deliver therapeutic agents to malignant tissue in vivo. These particles consist of a nonmagnetic core material that contains embedded magnetic nanoparticles and therapeutic agents such as photodynamic sensitizers. For in vivo therapy, the particles are injected into the microvascular system upstream from malignant tissue, and captured at the tumor using an applied magnetic field.

Cognitive Effects of Logo among Black and White Zimbabwean Girls and Boys.

The cognitive effects of LOGO were examined among 11-12-year-old black and white Zimbabwean girls and boys. Fifty-two experimental group children were exposed to a BBC LOGO programme with a screen turtle. Forty-one control group children received no exposure to computers at school.

Knowledge about AIDS among Zimbabwean teacher-trainees before and during the public awareness campaign.

Knowledge about AIDS was studied among 4,189 Zimbabwean teacher-trainees from January to March, 1988, about six months after a national AIDS awareness campaign began. Knowledge about AIDS among part of this sample of teacher-trainees surveyed after the AIDS campaign began was also compared with that displayed by 630 teacher-trainees studied in January, 1987, roughly six months before the AIDS campaign began. Over 85 percent of 1988 subjects knew that AIDS is fatal and incurable.