University of Peshawar

Condition number-based new robust ridge M-estimator for linear regression model with penalty of multicollinearity and outlier

In multiple linear regression models, traditional methods, such as OLS and ridge regression often fail due to multicollinearity and outliers in the y-direction. To address these issues, robust ridge M-estimators have been developed, offering resistance to outliers and multicollin...

A new species of Squamulea (Teloschistaceae) from the Himalayan Region

Squamulea pakistanica sp. nov. is a newly discovered lichen species from the Himalayan moist temperate forests of Pakistan. The genus Squamulea (Teloschistaceae) includes squamulose or subfoliose taxa, many of which are understudied in South Asia. This study aims to characterize...

Accurate Treatment of Solution and Flux Discontinuities in 2D Time-Dependent Interface Problems via Meshless Method

Interface problems frequently arise in applications including heat conduction with composite materials, fluid flow in porous media, and diffusion–reaction processes across heterogeneous domains. This paper presents a numerical method that combines radial basis functions with a fi...

Magnetically modified orange peel powder: A sustainable and recoverable adsorbent for enhanced removal of Rhodamine B

Orange peel powder (OPP) has been widely explored for dye adsorption; however, its limited adsorption capacity and poor separation efficiency restrict its practical applicability. In this study, magnetic Fe 3 O 4 nanoparticles were successfully integrated with OPP through a green...