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AN INQUIRY INTO THE STRUCTURAL EVOLUTION OF THE NEOPROTEROZOIC SHAIT GRANITE COMPLEX, SOUTH EASTERN DESERT, EGYPT

Research Abstract

Geologic investigation on the basement rocks exposed around Wadi Shait revealed that they constitute part of a fold thrust nappes comprising Gardan ophiolitic mélange structural unit (GOM) exposed in a tectonic contact against the Shait granite complex (SGC). Both units are brittly to ductily deformed, and are partially intruded by the calc-alkaline Hamash granodiorite, Dokhan volcanics, post-orogenic alkali granite and the Natash volcanics. Litholgically, the GOM builds up a stack of sliced sequence comprising low-grade regionally metamorphosed epiclastic, volcanogenic pyroclastic, basic and intermediate lava flows and structurally topped by metagabbro and hornblende metagabbro slices. On the other hand, the SGC is composed mainly of mesocratic tonalite, minor leucocratic trondhjemite, granodiorite and monzogranite. The latter occurs as dyke-like masses intruding the outcrops of the other rock varieties. This lithologic association denotes that the SGC constitutes a widely evolved complex in which the early members are deep-seated, calc-alkaline and I-type whereas the later members are shallower and clearly intrusive. Field data revealed that the stacking nature and consequently uplifting of the SGC were related to late orogenic extension associated with shortening phases controlled by Najd transformed faults. Detailed field mapping and petrographic studies carried out on the Wadi Shait area show evidence of polyphase deformation (D1-D4) affecting the SGC in addition to three metamorphic events (M1,M2 and M3) affecting the GOM.

Research Authors
Mohamed Abdelkawy Mohamed Elfadly
Research Date
Research Department
Research Journal
Assiut University Journal of Geology
Research Pages
16
Research Publisher
Assiut University Journal of Geology
Research Vol
2
Research Year
2018

A novel electrochemical sensor based on gold nanoparticles decorated functionalized carbon nanofibers for selective determination of xanthine oxidase inhibitor febuxostat in plasma of patients with gout

Research Abstract

Febuxostat is an antihyperuricemic drug used for the treatment of hyperuricemia in patients with chronic gout. Hence, in this work, there was an impetus to construct a sensitive electrochemical sensor for the detection of febuxostat (FBX) drug in human plasma of patients. A novel electrochemical sensor was successfully fabricated based on gold nanoparticles decorated functionalized carbon nanofibers AuNPs@f-CNFs modified pencil graphite rod electrode (PGRE) to determine FBX drug. The new sensor showed a superior performance in terms of a wide linear range (0.03–77 µM) with high sensitivity (5.9 μA μM−1 cm−2). The limits of detection (LOD) and quantification (LOQ) of FBX were deliberated to be 12.7 nM and 42.5 nM, respectively. Furthermore, electrochemical sensing of FBX in the presence of ascorbic acid, dopamine and uric acid was examined. The fabricated electrode directly paved the new way for the electrochemical quantification of FBX in pharmaceutical formulations, plasma of patients with gout and human biological fluids. Finally, the ultra-high performance liquid chromatography (UHPLC) method was performed to validate the reliability of the proposed method.

Research Date
Research Department
Research Journal
Sensors and Actuators B: Chemical
Research Vol
Volume 347
Research Website
https://www.sciencedirect.com/science/article/pii/S0925400521011941
Research Year
2021

Fuzzy β-irresolute functions and fuzzy β-compact spaces in fuzzifying topology

Research Abstract

In this paper the concepts of fuzzifying β −irresolute functions and fuzzifying β-compact spaces are characterized in terms of fuzzifying β-open sets and some of their properties are discussed.

©2006  Shiraz University.

Research Authors
O. R. Sayed and M. Azab Abd-Allah
Research Department
Research Journal
Iranian Journal of Science & Technology Transaction A: Sciences
Research Member
Research Pages
297- 314
Research Vol
30 (3)
Research Website
©2006 Shiraz University.
Research Year
2006

On Ω-closed sets and Ωs- closed sets in topological spaces

Research Abstract

New classes of sets called Ω-closed sets and Ωs-closed sets are introduced and studied. Also, we introduce and study Ω-continuous functions and Ωs-continuous functions and prove pasting lemma for these functions. Moreover, we introduce classes of topological spaces called Ω-T1/2 and Ω-Ts.

@ 2005 Akade´miai Kiado´, Budapest.

Research Authors
T. Noiri and O. R. Sayed
Research Department
Research Journal
Acta Mathematica Hungarica
Research Member
Research Pages
307- 318
Research Vol
107 (4)
Research Website
@ 2005 Akade´miai Kiado´, Budapest.
Research Year
2005

Semi-compactness in fuzzifying topology

Research Abstract

In this paper we introduce and study the concept of semi compactness in the framework of fuzzifying topology. We use the finite intersection property to give a characterization of the fuzzifying semi compactness.

@2005 The Pakistan Academy of Sciences.

Research Authors
O. R. Sayed
Research Department
Research Journal
Proceedings of The Pakistan Academy of Sciences
Research Member
Research Pages
177-186
Research Vol
42 (3)
Research Website
@2005 The Pakistan Academy of Sciences.
Research Year
2005

Fuzzy γ-convergence and fuzzy cγ-convergence of nets and filters in fuzzifying topology

Research Abstract

In this paper, the theory of γ -convergence, and cγ -convergence on nets
and filters is established in fuzzifying topology. Some important and interesting
results in fuzzifying topology are obtained by means of the theory.

@2005 The Pakistan Academy of Sciences.

Research Authors
T. Noiri and O. R. Sayed
Research Department
Research Journal
Proceedings of The Pakistan Academy of Sciences
Research Member
Research Pages
111-120
Research Vol
42 (2)
Research Website
@2005 The Pakistan Academy of Sciences.
Research Year
2005

Corrigendum to the article "Almost continuity and δ- continuity in fuzzifying topology"

Research Abstract

In (2000), Zahran has introduced the concepts of -open sets, almost continuity and -continuity in fuzzifying topology. In this note we show that Lemma 2.2 and Theorem 2.4 are incorrect.

@ 2004 Elsevier Science B.V.
 

Research Authors
O. R. Sayed and A. M. Zahran
Research Department
Research Journal
Fuzzy Sets and Systems
Research Member
Research Pages
153-154
Research Vol
146 (1)
Research Website
@ 2004 Elsevier Science B.V.
Research Year
2004

Pre-separation axioms in fuzzifying topology

Research Abstract

In the present paper we introduce and study pre-T0-, pre-R0-, pre-T1-, pre-R1-, pre-T2 (pre-Hausdorff)-, pre-T3 (pre-regularity)-,  pre-T4 (pre-normality), )-, pre-strongT3- and pre-strong T4 -separation axioms in fuzzifying topology and
give some of their characterizations as well as the relations of these axioms and other separation axioms in fuzzifying topology introduced by Shen [7]
.

Research Authors
K. M. Abd El-Hakeim, F. M. Zeyada and O. R. Sayed
Research Department
Research Journal
Fuzzy Systems and Mathematics
Research Member
Research Pages
29-37
Research Vol
17 (1)
Research Year
2003

Fuzzifying proximity and strong fuzzifying uniformity

Research Abstract

We introduce the concept of a fuzzifying proximity and study some properties of fuzzifying proximities - in particular we show how a fuzzifying proximity on
a set X naturally induces a fuzzifying topology on the same set. Besides, the concept of a strong fuzzifying uniformity (which is a certain modification of Ying’s concept of a fuzzifying uniformity ([4])) is introduced. Some relations between fuzzifying proximities, strong fuzzifying uniformities and corresponding fuzzifying topologies are established. In particular, we show that the fuzzifying topology induced by the fuzzifying proximity and the fuzzifying topology induced by the strong fuzzifying uniformity are coincide.

Research Authors
F. H. Khedr, K. M. Abd El-Hakeim, F. M. Zeyada and O. R. Sayed
Research Department
Research Journal
Soochow Journal of Mathematics
Research Member
Research Pages
83-92
Research Vol
29 (1)
Research Year
2003

Fuzzy cγ-open sets and fuzzy cγ-continuity in fuzzifying topology

Research Abstract

The concepts of fuzzy -open sets and fuzzy -continuity are introduced and studied in fuzzifying topology and by making use of these concepts, some decompositions of fuzzy continuity are introduced.

© 2002,Hindawi Publishing Corp

Research Authors
T. Noiri and O. R. Sayed
Research Department
Research Journal
International Journal of Mathematics and Mathematical Sciences
Research Member
Research Pages
51-63
Research Vol
31 (1)
Research Website
https://www.hindawi.com/journals/ijmms/contents/year/2002/page/17/
Research Year
2002
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