Zobrazeno 1 - 10
of 204
pro vyhledávání: '"Malik Zaka Ullah"'
Publikováno v:
Alexandria Engineering Journal, Vol 83, Iss , Pp 367-375 (2023)
There is an increasing industrial demand to improve the thermal characteristics of fluids as they flow over stretching/shrinking and rotating surfaces. Heat transfer liquids, thermal exchangers, and coolants in electronics are examples of applicable
Externí odkaz:
https://doaj.org/article/00ff2f24fd4a45eaa01ebe55445033ce
Publikováno v:
Mathematics, Vol 12, Iss 11, p 1772 (2024)
The target of this work is to present a multiplication-based iterative method for two Hermitian positive definite matrices to find the geometric mean. The method is constructed via the application of the matrix sign function. It is theoretically inve
Externí odkaz:
https://doaj.org/article/382ff9e076204f2590fd023cdb3a42d9
Autor:
Malik Zaka Ullah, Ayesha Maklai, Zebunnisa Sohail, Firas Jaafar Kareem Al Najjar, Maya Habous
Publikováno v:
Saudi Journal of Emergency Medicine, Vol 4, Iss 1, Pp 031-035 (2023)
Objective: This study aimed to find if certain places are more contaminated by SARS COV-2 than the others in an Emergency Department (ED) of a tertiary care hospital. Methods: This was a prospective cross-sectional study carried out at the tertiary c
Externí odkaz:
https://doaj.org/article/8ed5e2f73c9e4b1c992b55b4685aaa81
Autor:
Malik Zaka Ullah, Sultan Muaysh Alaslani, Fouad Othman Mallawi, Fayyaz Ahmad, Stanford Shateyi, Mir Asma
Publikováno v:
AIMS Mathematics, Vol 8, Iss 8, Pp 19264-19274 (2023)
This work proposes a new scheme under the umbrella of iteration methods to compute the sign of an invertible matrix. To this target, a review of the exiting solvers of the same type is given and then a new scheme is derived based on a multi-step Newt
Externí odkaz:
https://doaj.org/article/14b04d702c834a59bd4fa5d536666e4f
Publikováno v:
Alexandria Engineering Journal, Vol 62, Iss , Pp 403-413 (2023)
An analysis is carried out to examine the effects of chemical reactions on the flow of two-phase non-miscible liquids streaming through rotating parallel plates. The plates are isothermal and insulated electrically. The Couette flow is considered for
Externí odkaz:
https://doaj.org/article/ad835b3e692c4740bceb1638f22aa25e
Publikováno v:
Mathematics, Vol 11, Iss 19, p 4130 (2023)
This paper reports the filamentation of hollow Gaussian beams of the first, second, third, and fourth orders during propagation in a cubic and quintic nonlinear medium. Due to spatial modulation instability, the hollow Gaussian beams split to form ei
Externí odkaz:
https://doaj.org/article/3b30367b347541dc938b53fcc66395e4
Publikováno v:
Fractal and Fractional, Vol 7, Iss 9, p 684 (2023)
The computation of the sign function of a matrix plays a crucial role in various mathematical applications. It provides a matrix-valued mapping that determines the sign of each eigenvalue of a nonsingular matrix. In this article, we present a novel i
Externí odkaz:
https://doaj.org/article/884ae74682004e0db70b89aa0eede5bc
Autor:
S. Ashok, Malik Zaka Ullah, Nandakumar Vadivelu, Mohammed Tariqul Islam, Safa Nasereddin, Wajahat Zafar Khan
Publikováno v:
Dubai Medical Journal, Pp 330-338 (2021)
Background: The outbreak of coronavirus 2019 (COVID-19) which emerged in December 2019 spread rapidly and created a public health emergency. Geospatial records of case data are needed in real time to monitor and anticipate the spread of infection. Me
Externí odkaz:
https://doaj.org/article/cb665cf6e09b49f6bc3ba887e675acf5
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
Abstract Proteins are a vital component of cells that perform physiological functions to ensure smooth operations of bodily functions. Identification of a protein's function involves a detailed understanding of the structure of proteins. Stress prote
Externí odkaz:
https://doaj.org/article/1de75277602c4732bc46a4bb3a5045e8
Autor:
Fouad Mallawi, Malik Zaka Ullah
Publikováno v:
Alexandria Engineering Journal, Vol 60, Iss 4, Pp 3565-3575 (2021)
The current research article explores the bio-convection magnetized Carreau-nanofluid flow utilizing activation energy and magnetic dipole. Magnetic nanomaterials have significant effect on the magnetized behavior of ferrofluids which leads to robust
Externí odkaz:
https://doaj.org/article/82d1f571e68b44d0b638f618b05b75a7