Fibrewise ω-compact and locally ω-compact spaces

Y. Y. Yousif

doi:10.1080/09720502.2021.1964730

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Publication Date

Sun Oct 03 2021

Journal Name

Journal Of Interdisciplinary Mathematics

Volume

24

DOI

10.1080/09720502.2021.1964730

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Fibrewise ω-compact and locally ω-compact spaces

Fibwi-topspa

Fibwi-w-comp

Fibwi-loc-w-comp

Fibwi-H

Fibwi-w-re

Fibwi-w-no.

Y. Y. Yousif

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The goal of this article is to construct fibrewise w-compact (resp. locally w-compact) spaces. Some related results and properties of these concepts will be investigated. Furthermore, we investigate various relationships between these concepts and three classes of fibrewise w-separation axioms.

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Publication Date

Sat Apr 01 2023

Journal Name

Nano Biomedicine And Engineering

Effects of Silver Nanoparticles Synthesized from Phenolic Extract of Agaricus bisporus Against Pathogenic Bacteria and Yeasts

Keywords:silver nanoparticles

phenolic compound

synergistic effect

Agaricuss bisporus

pathogenic bacteria

yeasts

Enass Ghassan

Sura muayad

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Publication Date

Sun Mar 01 2026

Journal Name

Chemistryselect

Synergistic Antibacterial and Anticancer Effects of a Biohybrid Composed of Zinc Oxide Nanoparticles and Streptococcus Salivarius Bacteriocin

Walaa Ali

Rusul Dhyaa

Hiba Mahdi Mahmood

Mais E.

Hussein S.

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ABSTRACT Antimicrobial therapies are desperately needed since the threat posed by multidrug‐resistant (MDR) bacteria only grows. Bacteriocins produced by <italic>Streptococcus salivarius</italic> possess promising antibacterial properties, yet their practical application is hindered by low production yield and limited stability. Here, we report the green synthesis of a novel biohybrid by conjugating purified <italic>S. salivarius</italic> bacteriocins with zinc oxide nanoparticles (ZnONPs), aiming to enhance bacteriocin stability and antimicrobial efficacy. The successf ... Show More

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(7)

(6)

Publication Date

Mon Mar 03 2025

Journal Name

Iop Conference Series: Earth And Environmental Science

Study on Frequency of Hard Tick Isolated from Goat (Capra hircus Linnaeus, 1758) in Iraq

zainab

H M

S Y

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AbstractIn Iraq, the domestic goat <italic>Capra hircus</italic> is valued as a valuable commercial resource. As obligatory ectoparasites, ixodid ticks cause significant harm to their animal hosts. Hard ticks parasitize the abdomen, inside limbs, ears, and head. Out of a total of 200 samples evaluated, 150 goat- infested samples had a total of 450 Hard ticks (303male and 147 female) and were infested at a rate of 75%. The results of the current research eight species of hard ticks were recognized. Goat species belonging to the family Ixodidae (Capra hircus: Linnaeus, 1758), obtained from distinct areas involving: the Iraqi capital Baghdad governorate [Al-Yusifiya], Al-Anbar governor ... Show More

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(1)

Publication Date

Sat Oct 12 2024

Journal Name

Biorxiv

The thermotolerant Arabian killifish,Aphanius dispar, as a novel infection model for human fungal pathogens

Rashid

Tina

Teigan

Larissa L. H.

Atyaf Saied

Elliott

Sienna

Chantelle

Hugh

Rhys

Steven

Alexandra C.

Mark

Tetsuhiro

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Abstract<italic>Candida albicans</italic>: a fungal pathogen, can cause superficial and fatal infections in humans. An important virulence factor in<italic>C. albicans</italic>dissemination is the transformation from yeast to an invasive hyphal form, which is favoured at human body temperature. Zebrafish, a useful model for studying<italic>C. albicans</italic>infections, cannot survive at 37°C. Arabian killifish,<italic>Aphanius dispar</italic>, an emerging teleost model can tolerate temperatures up to 40 °C for up to 12 days (independent feeding time) allowing for longer analysis compared to zebrafish. This study introduces<italic>A. dispar</italic>as a th ... Show More

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Publication Date

Mon Jan 01 2007

Journal Name

Ibn Al-hatham J. For Pure & Appl. Sci

ω-Perfect Mappings

ω-open set

ω-closed set

ω-perfect mapping

Y. Y.

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In this paper, we shall introduce a new kind of Perfect (or proper) Mappings, namely ω-Perfect Mappings, which are strictly weaker than perfect mappings. And the following are the main results: (a) Let f : X→Y be ω-perfect mapping of a space X onto a space Y, then X is compact (Lindeloff), if Y is so. (b) Let f : X→Y be ω-perfect mapping of a regular space X onto a space Y. then X is paracompact (strongly paracompact), if Y is so paracompact (strongly paracompact). (c) Let X be a compact space and Y be a p*-space then the projection p : X×Y→Y is a ω-perfect mapping. Hence, X×Y is compact (paracompact, strongly paracompact) if and only if Y is so.

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Publication Date

Sat Jan 01 2022

Journal Name

Rsc Advances

Antioxidant properties of butylated phenol with oxadiazole and hydrazone moiety at ortho position supported by DFT study

Raied Mustafa

Muhammad Kumayl

Nurdiana

Azhar

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Two series of 1,3,4-oxadiazole derivatives at the sixth position of the 2,4-di-tert-butylphenol group were synthesized.

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(16)

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Publication Date

Fri Feb 14 2014

Journal Name

Journal Of Basic Microbiology

Isolation and characterization of lytic vibriophage against Vibrio cholerae O1 from environmental water samples in Kelantan, Malaysia

A.M.M.

Rafidah Hanim

Manickam

Chan Yean

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Water samples from a variety of sources in Kelantan, Malaysia (lakes, ponds, rivers, ditches, fish farms, and sewage) were screened for the presence of bacteriophages infecting Vibrio cholerae. Ten strains of V. cholerae that appeared to be free of inducible prophages were used as the host strains. Eleven bacteriophage isolates were obtained by plaque assay, three of which were lytic and further characterized. The morphologies of the three lytic phages were similar with each having an icosahedral head (ca. 50–60 nm in diameter), a neck, and a sheathed tail (ca. 90–100 nm in length) characteristic of the family Myoviridae.

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Publication Date

Thu Dec 01 2016

Journal Name

Croatian Journal Of Fisheries

Morphometric Characteristics of CatfishSilurus triostegus(Heckel, 1843) from the Tigris and Shatt Al-Arab Rivers, Iraq

Laith A.

MUHAMMAD I.

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AbstractThirteen morphometric characters of catfish<italic>Silurus triostegus</italic>were studied from three localities on the Tigris and Shatt al-Arab rivers, Iraq. Monthly samples revealed no significant differences between genders. Positive allometric growths for all morphometric characters studied were observed. This study gives information to fishery biologists about morphometric characters of<italic>S. triostegus</italic>from the Tigris and Shatt al-Arab rivers to assist in planning of conservation strategies for this fish species.

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Publication Date

Fri Nov 01 2024

Journal Name

Heliyon

Strength and Deformation of Encased Concrete Columns by I- Section Steel and I- Section GFRP Subjected to Different Load Conditions

Ban Fadhil

Abbas A.

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Publication Date

Thu Aug 18 2016

Journal Name

Artificial Cells, Nanomedicine, And Biotechnology

Biosynthesis of silver nanoparticles from Catharanthus roseus leaf extract and assessing their antioxidant, antimicrobial, and wound-healing activities

Hanady S.

Wasnaa H

Ghassan M

Ali H

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