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Publication Date

Fri Jan 01 2010

Journal Name

Journal Of Collage Of Education

Volume

2010

Issue Number

6

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FILTER BASES AND ω-PERFECT FUNCTIONS

closure converge to a point

closure directed toward a set

almost ω-converges to a set

almost condensation point

ω-continuous functions

weakly ω-continuous functions

ω-compact functions

ω-rigid a set

almost ω-closed functions

ω-perfect functions.

Yousif Y.

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In this paper introduce some generalizations of some definitions which are, closure converge to a point, closure directed toward a set, almost ω-converges to a set, almost condensation point, a set ωH-closed relative, ω-continuous functions, weakly ω-continuous functions, ω-compact functions, ω-rigid a set, almost ω-closed functions and ω-perfect functions with several results concerning them.

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Publication Date

Sat May 01 2021

Journal Name

Journal Of Physics: Conference Series

The substitutions of Strontium by yttrium and their effects on Bi2Sr2-xYxCa2Cu3O10+δ superconducting compound

Laheeb A.

Kareem A.

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AbstractSuperconducting compound Bi2Sr2-xYxCa2Cu3O10+δ were Synthesized by method of solid state reaction, at 1033 K for 160 hours temperature of the sintering at normal atmospheric pressure where substitutions Yttrium oxide with Strontium. When Y2O3 concentration (0.0, 0.1, 0.2, 0.3, 0.4 and 0.5). All specimens of Bi2Sr2Ca2Cu3O10+δ superconducting compounds were examined. The resistivity of electrical was checked by the four point probe technique, It was found th ... Show More

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Publication Date

Mon Jul 01 2019

Journal Name

Journal Of Physics: Conference Series

Effect of Nickel Substitution On Structural and Electrical Properties of Hg0.5Pb0.5Ba2Ca2Cu3-yNiyO8+δ Superconductor Composite

Laheeb A.

Kareem A.

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Abstractsix specimens of the Hg0.5Pb0.5Ba2Ca2Cu3-y <italic>Niy </italic>O8+δ (y=0.2,0.4,0.6,0.8,1.0) superconducting compound were prepared by solid state reaction method, with sintering temperature equal to 1123K for 24 hours. The electrical resistivity was examined by the four probe technique, It was found that all the specimens have metallic behavior and increasing the critical temperature with increasing nickel concentration. The optimum critical temperature Tc was found equal ... Show More

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(4)

(3)

Publication Date

Wed May 08 2013

Journal Name

Iraqi Journal Of Science

On D- Compact Topological Groups

groups

cyclic groups

topological group

D- cover topological groups

isomorphism

direct product

D- compact topological group

Dheia G.

Afraa

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In the present paper, we have introduced some new definitions On D- compact topological group and D-L. compact topological group for the compactification in topological spaces and groups, we obtain some results related to D- compact topological group and D-L. compact topological group.

Publication Date

Sun Sep 07 2014

Journal Name

Baghdad Science Journal

Exponential Function of a bounded Linear Operator on a Hilbert Space.

Self-adjoint operator

positive operator

normal operator

quasinormal operator

binormal operator hyponormal operator and compact operator.

Radhi I.

Fatin A.

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In this paper, we introduce an exponential of an operator defined on a Hilbert space H, and we study its properties and find some of properties of T inherited to exponential operator, so we study the spectrum of exponential operator e^T according to the operator T.

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Publication Date

Tue Feb 13 2024

Journal Name

Iraqi Journal Of Science

On D- Compact Topological Groups

groups

cyclic groups

topological group

D- cover topological groups

isomorphism

.

direct product

D- compact topological group

Dheia

Afraa

...Show More Authors

In the present paper, we have introduced some new definitions On D- compact topological group and D-L. compact topological group for the compactification in topological spaces and groups, we obtain some results related to D- compact topological group and D-L. compact topological group.

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Publication Date

Sat Dec 01 2012

Journal Name

Advances In Bioresearch

Cytotoxicity of Miltefosine against Leishmania majorPromastigotes

Leishmaniasis has poor vaccination trials and the available drugs have side effects on patients. Therefore

development ofnew chemicals is important for public health. Miltefosine is the first drug used for oral treatment of visceral leishmaniasis.Previous studies approved that miltefosine is an effective treatment against visceral leishmaniasis

the visceral form ofLeishmania

and also on L. major

the cutaneous form of Leishmania. Here

we investigated the in vitro cytotoxicity ofmiltefosine on the procyclic promastigotes forms of L. major. Different concentrations of miltefosine were investigatedagainst the flagellated form of L. major

and results showed that miltefosine has inhibited the in vitro proliferation of theparasite

approving the cytotoxic effect of the compound on Leishmania

EC50 was determined after 24 hours exposure forthe drug and it was 1.54 μM. Our findings indicate that miltefosine has a cytotoxic effect on the insect stage of the old worldL. major and can be a new anti-Leishmanial drug

Hayder

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Publication Date

Wed Jan 01 2014

Journal Name

International Mathematical Forum

Coextending modules

Extending modules

Essential submodules

Coessential submodules

Closed submodules

Coclosed submodules

د.

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Throughout this paper we introduce the notion of coextending module as a dual of the class of extending modules. Various properties of this class of modules are given, and some relationships between these modules and other related modules are introduced.

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Publication Date

Sun Dec 06 2015

Journal Name

Baghdad Science Journal

Some Results on Pure Submodules Relative to Submodule

T-pure submodule

T-pure essential submodule and T-pure closed submodule.

Shireen O.

Noor R.

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Let R be a commutative ring with identity 1 and M be a unitary left R-module. A submodule N of an R-module M is said to be pure relative to submodule T of M (Simply T-pure) if for each ideal A of R, N?AM=AN+T?(N?AM). In this paper, the properties of the following concepts were studied: Pure essential submodules relative to submodule T of M (Simply T-pure essential),Pure closed submodules relative to submodule T of M (Simply T-pure closed) and relative pure complement submodule relative to submodule T of M (Simply T-pure complement) and T-purely extending. We prove that; Let M be a T-purely extending module and let N be a T-pure submodule of M. If M has the T-PIP, then N is T-purely extending.

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Publication Date

Wed Mar 08 2017

Journal Name

Ibn Al-haitham Journal For Pure And Applied Sciences

Weak N-open sets

N-open

semi-open

ï¡ -open

b-open

Î²-open

ï· -closed.

Amer

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In this paper we introduce new class of open sets called weak N-open sets and we study the relation between N-open sets , weak N-open sets and some other open sets. We prove several results about them.

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Publication Date

Thu Dec 28 2017

Journal Name

Ibn Al-haitham Journal For Pure And Applied Sciences

Synthesis and Characterization of some Metal Complexes with (3Z ,5Z, 8Z)-2-azido-8-[azido(3Z,5Z)-2-azido-2,6bis(azidocarbonyl)-8,9-dihydro-2H-1,7-dioxa-3,4,5triazonine-9-yl]methyl]-9-[(1-azido-1-hydroxy)methyl]-2H1,7-dioxa-3,4,5-triazonine â€“ 2,6 â€“ dica

Synthesis

characterization

cluster

azide

Thuraya A .

Waleed K .

Falih H .

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The reaction of LAs-Cl8 : [ (2,2- (1-(3,4-bis(carboxylicdichloromethoxy)-5-oxo-2,5dihydrofuran-2-yl)ethane â€“ 1,2-diyl)bis(2,2-dichloroacetic acid)]with sodium azide in ethanol with drops of distilled water has been investigated . The new product L-AZ :(3Z ,5Z,8Z)-2azido-8-[azido(3Z,5Z)-2-azido-2,6-bis(azidocarbonyl)-8,9-dihydro-2H-1,7-dioxa-3,4,5triazonine-9-yl]methyl]-9-[(1-azido-1-hydroxy)methyl]-2H-1,7-dioxa-3,4,5-triazonine â€“ 2,6 â€“ dicarbonylazide was isolated and characterized by elemental analysis (C.H.N) , 1H-NMR , Mass spectrum and Fourier transform infrared spectrophotometer (FT-IR) . The reaction of the L-AZ withM+n: [ ( VO(II) , Cr(III) ,Mn(II) , Co(II) , Ni(II) , Cu(II) , Zn(II) , Cd(II) and

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