Preferred Language
Articles
/
joe-129
Non-Destructive Testing of Carbon Fiber Reinforced Magnetic Reactive Powder Concrete Containing Nano Silica
...Show More Authors

This study involves the design of 24 mixtures of fiber reinforced magnetic reactive powder concrete containing nano Silica. Tap water has been used in mixing 12 of these mixtures, while the other 12 have been mixed using magnetic water. Nano Silica (NS) with ratios (1, 1.5, 2, 2.5 and 3) % were used. The results showed that the mixture containing 2.5%NS gives the highest compressive strength at age 7 days. Many different other tests were carried out, the results showed that the fiber reinforced magnetic reactive powder concrete containing 2.5% NS (FRMRPCCNS)  has the higher bulk density, dynamic modulus of elasticity, ultrasonic pulse velocity  electrical resistivity and lesser absorption than fiber reinforced nonmagnetic reactive powder concrete containing 2.5%NS(FRNRPCCNS). The percentages of increase for FRMRPCCNS are (1.6, 19.03, 7.89 and 19.28) % and the percentage of reduction is 55.7 % at 28 days respectively, as compared with FRNRPCCNS mixtures.

 

View Publication Preview PDF
Quick Preview PDF
Publication Date
Mon Oct 22 2018
Journal Name
Journal Of Economics And Administrative Sciences
Measuring and analyzing the relationship between the volatility of US stock market indices and the volatility of oil prices
...Show More Authors

The volatility of the financial markets and the oil market plays a major role in influencing macroeconomic activity, as well as the high interaction between the both markets and the remarkable sensitivity to their each other fluctuations which cause the undesirable impact on other economic sectors as an expected result due the mentioned interaction.

The study aimed to analyze the relationship between the volatility of the major US market indices represented by the DJIA index, S & P500, due to their comprehensiveness of the financial market, as they summarize the performance of the entire US market which is the largest economy in the world, as well as the difference in the calculation mechanism, and oi

... Show More
View Publication Preview PDF
Crossref (1)
Crossref
Publication Date
Mon Feb 25 2019
Journal Name
Iraqi Journal Of Physics
Effects of multi- Deposition on the structural and optical properties of CdS nanocrystalline thin film prepared by CBD technique.
...Show More Authors

Cadmium sulfide (CdS) nanocrystalline thin films have been prepared by chemical bath deposition (CBD) technique on commercial glass substrates at 70ºC temperature. Cadmium chloride (CdCl2) as a source of cadmium (Cd), thiourea (CS(NH2)2) as a source of sulfur and ammonia solution (NH4OH) were added to maintain the pH value of the solution at 10. The characterization of thin films was carried out through the structural and optical properties by X-ray diffraction (XRD) and UV-VIS spectroscopy. A UV-VIS optical spectroscopy study was carried out to determine the band gap of the nanocrystalline CdS thin film and it showed a blue shift with respect to the bulk value (from 3.9 - 2.4eV). In present w

... Show More
View Publication Preview PDF
Crossref
Publication Date
Wed Mar 30 2022
Journal Name
Journal Of Educational And Psychological Researches
Employing electronic supervision applications in developing the teaching performance of teachers in the Sultanate of Oman: a suggested vision
...Show More Authors

The study aimed to investigate the employment of electronic supervision applications in developing the teaching performance of teachers in Oman. Based on the qualitative method and the study population consisted of all the teachers of the first cycle in the Governorate of Muscat. The study sample amounted to 24 female teachers. The interview was used as a tool for data collection. The study reached several results, including: There are difficulties in employing electronic supervision applications, which are weak network, density of curricula, lack of experience in applying technology, and the large number of tasks assigned to the teacher. These difficulties can also be overcome by strengthening the network, training teachers, reducing th

... Show More
View Publication Preview PDF
Publication Date
Tue Mar 30 2021
Journal Name
Journal Of Economics And Administrative Sciences
The effect of intellectual capital on the Total quality management of higher education and scientific research institutions in Baghdad
...Show More Authors

         The purpose and goal of the research revolve around the diagnosis of intellectual capital as the logical indicator to study an effective human resource management practice and its influential role in determining the overall quality management of higher education institutions and scientific research in Baghdad.

       To achieve the purpose of the research, an upgraded standard questionnaire was used to collect data and distribute it to the selected sample in a statistical manner from the study population of (5) institutions affiliated with the Ministry of Higher Education and Scientific Resear

... Show More
View Publication Preview PDF
Crossref
Publication Date
Wed Apr 26 2017
Journal Name
Ibn Al-haitham Journal For Pure And Applied Sciences
First Record of the Monogenean Gyrodactylus lavareti Malmberg, 1957 in Iraq on Gills of the Common Carp Cyprinus Carpio
...Show More Authors

The monogenean Gyrodactylus lavareti Malmberg, 1957 is recorded here in the present study for the first time in Iraq from gills of the common carp Cyprinus carpio. This is the twentieth gyrodactylid species to be recorded from fishes of Iraq. The description and measurements of this parasite as well as its illustration were given.   
 

View Publication Preview PDF
Publication Date
Tue Nov 01 2016
Journal Name
Journal Of Economics And Administrative Sciences
The role of public relations in enhancing the quality of governmental service-a Field study in the Iraqi Airlines
...Show More Authors

Abstract
        The research has discussed the public relations as dependent variable of its branch dimensions( confidence , commitment, control and satisfaction ) and the governmental service quality as independent variable of its branch dimensions (response, dependency, emphasis, tangibility and sympathy), and the research problem has represented by weakness of service quality presented to the customers dealing with company, which is observed via  field co-existence of the researcher, where he observe that the quality presented in the company services, are inappropriate with the customers expectations level, also there is weakness of attention and recognition by the

... Show More
View Publication Preview PDF
Crossref
Publication Date
Fri Dec 01 2017
Journal Name
Bulletin Of The Iraq Natural History Museum (p-issn: 1017-8678 , E-issn: 2311-9799)
SEASONAL POPULATION ABUNDANCE OF THE CHRYSANTHEMUM APHIDS (HOMOPTERA, APHIDIDAE) IN THE MIDDLE OF IRAQ WITH PICTORIAL KEY TO SPECIES
...Show More Authors

    This study was based on the determination of aphid species that infested Chrysanthemum sp. (Asterales, Asteraceae) in the middle of Iraq; five aphid species belong to subfamily Aphidinae were recorded: Aphis fabae Scopoli, 1763, Aphis gossypii Glover, 1877,  Coloradoa rufomaculata (Wilson, 1908), Macrosiphoniella sanborni (Gillette, 1908) and Myzus persicae (Sulzer, 1776). A. gossypii was the most dominant species throughout the study period while M. persicae  is the lesser species.

    A summary of  the main taxonomic characters is presented here and a pictorial key which was designed to separate aphi

... Show More
View Publication Preview PDF
Scopus (3)
Crossref (2)
Scopus Crossref
Publication Date
Mon Jan 28 2019
Journal Name
Iraqi Journal Of Science
Using of Ground Penetrating Radar (GPR) for investigate the subsurface archaeological features of Babylon, the ancient city (Mounts zoona)
...Show More Authors

Ground Penetrating Radar (GPR) method has been used in the province of Babylon, the ancient city  (constituted mounts zoona) archeological site The study area is located South of the city of Hilla by 40 km   between longitudes 44˚ 24΄ 40˝ E to 44˚ 27΄ 00˝ E, and latitudes 32˚ 31΄ 10 ˝ N to 32˚ 33΄ 00˝ N,

The type of GPR that used in the survey fieldwork was of Malå Geoscience / Sweden type (RAMAC /GPR). The constituted mounts zoona  district  are surveyed using Seventy – four  parallel profiles trending S-N ,N-S , E-W and W-E using the available antenna 160 MHz and 450 MHz, with Five meter spacing between each other are acquired the round-trip survey was conducted for ease and speed of

... Show More
View Publication Preview PDF
Publication Date
Thu Mar 30 2017
Journal Name
Iraqi Journal Of Pharmaceutical Sciences ( P-issn 1683 - 3597 E-issn 2521 - 3512)
AComparative Qualitative and Quantitative Study of Anthraquinone Derivatives in the Roots of Rheum ribes and Rheum emodi by HPLC
...Show More Authors

High performance liquid chromatography was applied for the separation and identification of four antharquinone derivatives, aloe emodin, emodin, chrysophanol and physcion. The separation was carried out using Eurospher 100, C18 column (4.6 mm i.d. x 250 mm, 5 µm) under the following conditions: acetonitile (solvent A) and water: acetic acid (99.9: 0.1 v/v, pH 3.5)( solvent B) as a mobile phase with isocratic elution with 30% solvent B at flow rate 0.8 ml/min. The detection wavelength was set at 254 nm. The four antharquinone derivatives were isolated from the Iraqi rhubarb, Rheum ribes root by preparative TLC, their structures were identified by 1H NMR and used as standards for HPLC analysis. The percentages of alo

... Show More
View Publication
Crossref
Publication Date
Sat Apr 15 2023
Journal Name
Iraqi Journal Of Science
The Antimicrobial Effect of Alcoholic Extract of Peganumharmala L Seeds on Clinically Isolated Gram Negative and Gram Positive Bacteria
...Show More Authors

The aim of the present study was assess the antimicrobial effect of
Peganumharmala L seeds extracts by ethanol (80%) on gram negative and gram
positive bacteria and four concentrations (25, 50, 75 and 100) mg/ml were prepared.
Four clinical isolates of bacteria were used; two were positive and two were
negative bacteria; that include: Bacillus, Staphylococcus aureus, Pseudomonas
aeruginosa and Escherichia coli. The results showed that all concentration that have
been used had antimicrobial effect against gram negative and gram positive bacteria
and the best concentration that have the best antimicrobial effect was 100 mg/ml and
the effect of alcoholic extraction was greater on gram positive bacteria than gram
n

... Show More
View Publication Preview PDF