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Enhancement of mechanical and ferromagnetic properties of Cd0. 4Mn0. 6XO nanocomposites (X= ZnO, SnO, CuO, Al2O3, Fe2O3, CoO, NiO)

Research Abstract

Structural, mechanical and ferromagnetic characteristics of hydrothermally synthesized Cd0.4Mn0.6XO nanocomposites were investigated. The characterization of Cd0.4Mn0.6XO was accomplished using XRD, TEM, FTIR, photoluminescence and VSM techniques. The XRD showed the formation of monoclinic Cd2Mn3O8 alongside other phases. The crystallite size has no systematic trend against the valence state of ions. The particle size has minimum value (9.75 nm) for ZnO, and maximum values of 31.39 nm and 35.61 nm were observed for Al2O3 and Fe2O3, respectively. Similarly, typical enhancements are achieved for the mechanical and ferromagnetic parameters, e.g. they are increased when ZnO is replaced by Al2O3 and significantly enhanced by Fe2O3. In contrast, they were reduced by the other X, but they are still higher than ZnO. The photoluminescence of Cd0.4Mn0.6XO shows violet, blue, green, and orange emissions. The reported results indicate a strong correlation between the mechanical and ferromagnetic properties of nanocomposites against the particle/crystallite sizes and valence state.

Research Authors
A Sedky, Alaa M Abd-Elnaiem, M Al-Dossari, NS Abd EL-Gawaad, N Afify, Gh Abbady
Research Date
Research Department
Research Journal
Materials Science and Engineering: B
Research Pages
117737
Research Publisher
Elsevier
Research Website
https://www.sciencedirect.com/science/article/pii/S092151072400566X
Research Year
2024

Comparative study of optical properties and photocatalytic performance of Cd0.4Mn0.6O nanocomposites incorporated with different metal oxides

Research Authors
Gh Abbady, A Sedky, Alhafez M Alraih, Abdullah Almohammedi, N Afify, Alaa M Abd-Elnaiem
Research Date
Research Department
Research Journal
Inorganic Chemistry Communications
Research Pages
113385
Research Publisher
Elsevier
Research Year
2024

Influence of the Hydrogen Isotope Affinity of the Cathode Coating Material on the Neutron Production Rate in the Glow Discharge–Type Fusion Neutron Source

Research Authors
Toshiro Sakabe, Yasuyuki Ogino, Keisuke Mukai, Juro Yagi & Mahmoud Bakr
Research Date
Research Department
Research Journal
Fusion Science and Technology
Research Pages
1-13
Research Vol
00, xxx 2023
Research Year
2023

Measurements of Thermal and Epithermal Neutron Spatial Distribution Using Activation Foils Inside a Fusion Blanket Mock-Up

Research Authors
Y. Ogino, S. Kenjo, T. Sakabe, K. Mukai, M. Bakr, J. Yagi, and S. Konishi
Research Date
Research Department
Research Journal
IEEE TRANSACTIONS ON PLASMA SCIENCE,
Research Pages
2436-2442
Research Vol
Vol. 51 No.8
Research Year
2023

Influence of electrodes' geometrical properties on the neutron production rate of a discharge fusion neutron source

Research Authors
M. Bakr,) T. Sakabe, J.-P. Wulfk€uhler, K. Mukai, T. W. Smith,1 Y. Ogino,4 M. Tajmar,T. Scott,1 and S. Konishi
Research Date
Research Department
Research Journal
Physics of Plasmas
Research Pages
1-9
Research Vol
30
Research Year
2023

Some Relations on the rRs(P,Q, z) Matrix Function

Research Abstract

In this paper, we derive some classical and fractional properties of the rRs matrix function
by using the Hilfer fractional operator. The theory of special matrix functions is the theory of
those matrices that correspond to special matrix functions such as the gamma, beta, and Gauss
hypergeometric matrix functions. We will also show the relationship with other generalized special
matrix functions in the context of the Konhauser and Laguerre matrix polynomials.

Research Authors
Ayman Shehata, Ghazi S. Khammash and Carlo Cattani
Research Date
Research Department
Research File
Research Pages
817
Research Publisher
https://www.mdpi.com/2075-1680/12/9/817
Research Rank
Q1
Research Vol
12(9)
Research Website
https://doi.org/10.3390/axioms12090817
Research Year
2023

Control Functions in G-Metric Spaces: Novel Methods for θ-Fixed Points and θ-Fixed Circles with an Application

Research Abstract

The purpose of this paper is to present some new contraction mappings via control functions. In addition, some fixed point results for Θ,α,θ,Ψ contraction, rational Θ,α,θ,Ψ contraction and almost Θ,α,θ,Ψ contraction mappings are obtained. Moreover, under contraction mappings of types (I), (II), and (III) of Θ,θ,Ψυ0, several fixed circle solutions are provided in the setting of a G-Metric space. Our results extend, unify, and generalize many previously published papers in this direction. In addition, some examples to show the reliability of our results are presented. Finally, a supporting application that discusses the possibility of a solution to a nonlinear integral equation is incorporated.

Research Authors
Hasanen A. Hammad, Maryam G. Alshehri and Ayman Shehata
Research Date
Research Department
Research File
Research Journal
symmetry
Research Pages
164
Research Publisher
https://www.mdpi.com/2073-8994/15/1/164
Research Rank
Q2
Research Vol
15
Research Website
https://doi.org/10.3390/sym15010164
Research Year
2023

On some properties of the bibasic Humbert hypergeometric functions E1 and E2

Research Abstract

The main object of this paper is to deduce the bibasic Humbert functions Ξ1 and Ξ2
Some interesting results and elementary summations technique that was successfully employed,
q?recursion, q?derivatives relations, the q?differential recursion relations, the q?integral representations
for Ξ1 and Ξ2 are given. The summation formula derives a list of p?analogues
of transformation formulas for bibasic Humbert functions that have been studied, also some
hypergeometric functions properties of some new interesting special cases have been given.

Research Authors
CAI Qing-bo, Ghazi S. Khammash, Shimaa I. Moustafa and Ayman Shehata
Research Date
Research Department
Research File
Research Journal
Appl. Math. J. Chinese Univ.
Research Pages
614-630
Research Publisher
https://link.springer.com/article/10.1007/s11766-023-4848-8
Research Rank
Q2
Research Vol
38(4)
Research Website
https://doi.org/10.1007/s11766-023-4848-8
Research Year
2023

Magma fractionation and emplacement mechanism in a subvolcanic plumbing system in a continental region: constraints from the late Neoproterozoic Wadi Dib ring complex in the Eastern Desert, Egypt

Research Abstract

We examined an alkaline ring complex in the Eastern Desert of Egypt, Wadi Dib ring complex (WDRC), to understand formation mechanisms of the intimately related ring structure and chemical diversity. The WDRC consists of multiple circular rings of the oldest volcanic units, the middle-stage plutonic unit, and the youngest dike unit, and these units show overlapping whole-rock major element compositions. The compositional variation of the volcanic and plutonic units can be accounted for by a stepwise fractional crystallization starting with a trachytic magma without significant magma replenishment or crustal contamination. From the margin to the center and oldest to youngest, the plutonic unit consists of an outer ring (syenite), inner rings 1 (quartz-bearing syenite) and 2 (quartz syenite), and a granitic core (syenogranite). The whole-rock chemical composition of the plutonic unit is progressively more fractionated inwards from the outer ring to the granitic core through the inner rings. Syenites from the innermost outer ring show high degree of deformation, which gradually decreases outwards in the outer ring and abruptly decreases inwards in the outermost inner ring 1. The deformed syenites show microstructures suggesting reactive melt transportation. The country rocks neighboring the ring complex and equivalent blocks present in the periphery of the outer ring, the overlying volcanic unit and equivalent blocks present in the inner rings all show microstructures indicative of pyrometamorphism. Spatial variations in the microstructures in the plutonic unit indicate an increase in cooling rate from the outer ring to the granitic core and thus with time …

Research Authors
Eman Saad, Kazuhito Ozawa, Takeshi Kuritani, Ali A Khudeir
Research Date
Research Department
Research Journal
Journal of Mineralogical and Petrological Sciences
Research Pages
220801
Research Publisher
Japan Association of Mineralogical Sciences
Research Vol
Volume 118, Issue 1
Research Website
https://scholar.google.com.eg/scholar?oi=bibs&cluster=7546730743683401702&btnI=1&hl=en
Research Year
2023

New host record, Sclerophrys regularis (Bufonidae), for Rhabdias africanus (Rhabdiasidae, Kuzmin, 2001) based on molecular and morphological evidence

Research Abstract
With diversity of hosts range, most identified nematode species still lack the crucial connection between
morphological and molecular make-up, which is important for precisely classifying the specimens. The
present study provides the complete description of Rhabdias africanus in the new host record,
Sclerophrys regularis. Fifty toad specimens were collected, and a high prevalence of R. africanus infection
(74%) was observed. Morphology and ultrastructure were observed using light and scanning electron
microscopes. Morphological characteristics, including peculiarities of the head, the shape and position
of the lips, and the number of labial papillae, were described. The length of the body, the esophageal
length, the distance from an anterior end to the nerve ring, and the tail length were reduced in the stud
ied samples relative to previously described specimens. Furthermore, some variable matrices that have
not previously been described, e.g., ovarian part widening, the nerve ring and its location, and eggs with
different stages of larvae, were included in the present study. Genus and species identification was con-
firmed by comparing partial 12S (619 bp) and ITS (878 bp) gene sequences to those of Rhabdias species
deposited in GenBank. The studied species showed a 99.34% resemblance to R. africanus from South
Africa. We assume our findings will aid in the molecular identification of adult and larval stages of this
genus in amphibians. We strongly recommend further studies on the environmental factors that promote
Rhabdias infection and transmission.
Research Authors
Sara S. Abdel-Hakeem, Yousef A. Fadladdin, Atef M. El-Sagheer, Asmaa Adel
Research Date
Research Department
Research Pages
103366
Research Publisher
Saudi journal of biological science
Research Vol
29
Research Year
2022
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