Zobrazeno 1 - 10
of 575
pro vyhledávání: '"AHMED, NASR"'
Autor:
Ahmed, Nasr, Pradhan, Anirudh
The existence of Schwarzchild black holes in the structure of Swiss-cheese brane-world led to the conclusion that this specific brane-world scenario is more realistic than the FLRW branes. In this paper, we show that a Logamediate inflation on the Sw
Externí odkaz:
http://arxiv.org/abs/2310.15186
Autor:
Ahmed Abdelaziz, Karim Atta, Abdelrahman H. Hafez, Hanaa Elsayed, Ahmed A. Ibrahim, Mohamed Abdelaziz, Hallas Kadhim, Ahmed Mechi, Ahmed Elaraby, Mahmoud Ezzat, Ahmed Fadel, Abdullah Nouh, Rahma AbdElfattah Ibrahim, Mohamed Hatem Ellabban, Ali Bakr, Ahmed Nasr, Mustafa Suppah
Publikováno v:
Journal of Cardiothoracic Surgery, Vol 19, Iss 1, Pp 1-14 (2024)
Abstract Background Drug-coated balloons (DCB) have promising results in the management of in-stent restenosis (ISR), still their role remains a major challenge, and not well established in contemporary clinical practice. Aims To provide a comprehens
Externí odkaz:
https://doaj.org/article/39cf0acd7a4c43cc884f2b6bbcd2aba4
Publikováno v:
Journal of Engineering and Applied Science, Vol 71, Iss 1, Pp 1-43 (2024)
Abstract In recent times, elevated urban linkages (EULs) have emerged as crucial components of urban development, cutting through the cities’ urban fabric to accommodate the rapid expansion of urban cores and to facilitate traffic flow. However, th
Externí odkaz:
https://doaj.org/article/ec7156d56d524f519768daec460b086e
Autor:
Ahmed, Nasr, Kamel, Tarek M.
This paper investigated two scalar field cosmological models in $f(R,T)$ gravity with cosmic transit and varying cosmological constant $\Lambda(t)$.The cosmological constant tends to have a tiny positive value in the current epoch.The scalar field pr
Externí odkaz:
http://arxiv.org/abs/2303.04076
Publikováno v:
Advances in Mechanical Engineering, Vol 16 (2024)
The safety barrier is often positioned at the entrance of the inlet passage in large and medium-sized low-lift pump stations, to ensure the safety of people and animals. To elucidate the blocking effect of the safety barrier and its influence mechani
Externí odkaz:
https://doaj.org/article/6e91459d4c6e42c988a8159d38e0edf4
We study the big rip scienario in Swiss-cheese Brane-worlds. The results obtained have been found to be independent of the value of the cosmological constant $\Lambda$ whether its positive, negative or zero. Negative tension branes are not allowed in
Externí odkaz:
http://arxiv.org/abs/2212.00025
Publikováno v:
Canadian Journal of Physics (2022)
Modeling of matter bounce in $f(R,T)$ gravity has been presented with no violation of the null energy condition. Only a closed universe with negative pressure is allowed in good agreement with some recent observations which favor a universe with posi
Externí odkaz:
http://arxiv.org/abs/2206.10113
We explore some cosmological features of the newly suggested 4D Gauss-Bonnet gravity through two different models assuming a varying cosmological constant. Observational constraints, such as the cosmic transit and the flat curvature, have been consid
Externí odkaz:
http://arxiv.org/abs/2205.01096
Publikováno v:
RMxAA. March 2022
A matter bouncing entropy-corrected cosmological model has been suggested. The model allows only positive curvature with negative pressure and no violation of the null energy condition. The result obtained in this paper is supported by some recent th
Externí odkaz:
http://arxiv.org/abs/2204.11854
Autor:
Ahmed Nasr, Petr Svoboda
Publikováno v:
eXPRESS Polymer Letters, Vol 18, Iss 3, Pp 309-325 (2024)
Our work reveals a notable shift in the crystallization temperature (Tc) of poly(butylene terephthalate) (PBT) at which crystallization occurs due to exposure to prolonged thermal degradation at 270°C in an environment of nitrogen gas. The initial T
Externí odkaz:
https://doaj.org/article/c68a726eca384659aa9685eec0f77d9e