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Experimental and Numerical Evaluation of a Welded Demountable Shear Connector through Horizontal Pushout Tests
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A novel welded demountable shear connector for sustainable steel-concrete composite structures is proposed. The proposed connector consists of a grout-filled steel tube bolted to a compatible partially threaded stud, which is welded on a steel section. This connector allows for an easy deconstruction at the end of the service life of a building, promoting the reuse of both the concrete slabs and the steel sections. This paper presents the experimental evaluation of the structural behavior of the proposed connector using a horizontal pushout test arrangement. The effects of various parameters, including the tube thickness, the presence of grout infill, and the concrete slab compressive strength, were assessed. A nonlinear finite element model was also calibrated against the experimental results, and the validated numerical model was used to extend the validity of the experimental results and to perform further parametric studies. The experimental and numerical results show that the tested connectors have similar stiffness, but higher shear resistance and slip capacity compared with traditional welded shear studs and can be classified as ductile according to Eurocode 4.

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Publication Date
Sun Jan 30 2022
Journal Name
Iraqi Journal Of Science
Classification and Measurement of Land Cover of Wildfires in Australia Using Remote Sensing
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     Remote sensing techniques used in many studies for classfying and measuring of wildfires. Satellite Landsat8(OLI) imagery is used in the presented work. The satellite is considered as a near-polar orbit, with a high multispectral resolution for covering Wollemi National Park in Australia. The work aims to study and measure wildfire natural resources prior to and throughout fire breakout which occurred in Wollemi National Park in Australia for a year (October, 2019), as well as analyzing the harm resulting from such wildfires and their effects on earth and environment through recognizing satellite images for studied region prior to and throughout wildfires. A discussion of methods for computing the affecred area i

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Publication Date
Sun May 30 2021
Journal Name
Iraqi Journal Of Science
In Vivo and In Vitro Study of the Genetic Effects of Cabergoline Drug
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This study aimed to stand on genetic effects important of cabergoline drug. This toxic effect was evaluated for three different doses (0.05, 0.1, 0.5 mg/ml) in comparison with control (PBS/ phosphate buffer saline) both in vivo and in vitro. In vivo study involved the cytogenetic evaluation of cabergoline in mice by examination of mitotic index percentage (MI), micronucleus formation (MN) and chromosomal aberrations. Result indicated that all the tested doses cause significant reduction in MI percentage, while significant rise was seen with both MN formation and all studied chromosomal aberrations. While in vitro study involved measuring the effect of cabergoline on normal cell line (REF/ Rat embryonic

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Publication Date
Sun Sep 01 2013
Journal Name
Baghdad Science Journal
Kinetic Study of the Hydrolysis of synthesized Ibuprofen Ester and its Biological Activity
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It is known that the oral administration of ibuprofen caused an irritation of stomach as a side effect due to its carboxylic moiety. Ibuprofen ester was synthesized by linking the carboxylic moiety of ibuprofen and the hydroxylic group of paracetamol to reduce its side effect. Study the kinetic hydrolysis of prepared ester was examined at different values of physiological pH (1.0, 5.8, 6.4 and 7.4) at 37 ± 0.1 of 1 hour period. Measurements of absorbance were carried out by UV-Visible spectrophotometer to follow the stability of ester, it showed Pseudo first order hydrolysis. The pH- apparent rate profiles of ester was exhibited a good stability at pH 1.0 and pH 5.8. Pharmacological activity in vivo of prepared ester was evaluated in re

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Publication Date
Thu Dec 30 2021
Journal Name
Iraqi Journal Of Science
Ab initio Study of the Electronic and Optical Properties of Stable Boron Sheet
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    Utilizing first principles calculations within PW91 exchange-correlation method, we investigated a boron sheet that exhibits related electronic properties. The 2-dimensional boron sheet is flattened and has an atomic structure where the pair cores of every three ordered hexagons within the hexagonal network are loaded up by extra atoms, which saves the triangular lattice symmetry. The boron sheet takes possession of intrinsic metal properties and the electronic bands are comparable to the  bands of the graphene that are close to the Fermi level. The real and imaginary parts of the dielectric function show a metallic or semiconductor behaviour, depending on the electric field direction.

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Publication Date
Wed Mar 15 2017
Journal Name
Ibn Al-haitham Journal For Pure And Applied Sciences
Effect of Adding NPKZn Fertilizer in Growth and Yield of (Vigna raditia L.)
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Experiment was conducted using clay pots at botanical garden of Department of Biology/ College of Education for Pure Science / Ibn –AL- Haitham, University of Baghdad during the growth season of (2013-2014).The experiment aimed to study the effect of NPK Zn fertilizer in (15-15-15-1)% with the levels 0.2, 0.4, 0.6 grams per five kilograms soil based on (80, 120, 240 kg per Hectare)in some of morphological characters and yield of Vigna radiatia. The results showed a significant increase in plant height, dry weight, biological yield, economic yield, weight of 100 seeds, harvest index, absolute growth rate (AGR) were all increased and amount of output compared with control plants.

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Publication Date
Mon Jun 19 2023
Journal Name
Journal Of Engineering
Some Properties of Superplasticized and Retarding Concrete Under Effect of Accelerated Curing Methods
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In recent decades, tremendous success has been achieved in the advancement of chemical admixtures for Portland cement concrete. Most efforts have concentrated on improving the properties of concrete and studying the factors that influence on these properties. Since the compressive strength is considered a valuable property and is invariably a vital element of the structural design, especially high early strength development which can be provide more benefits in concrete production, such as reducing construction time and labor and saving the formwork and energy. As a matter of fact, it is influenced as a most properties of concrete by several factors including water-cement ratio, cement type and curing methods employed.
Because of acce

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Publication Date
Sun Mar 01 2009
Journal Name
Baghdad Science Journal
The Effect of Sodium Propionate on Microorganism and Self life of Laboratory Biscuit
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This study has been conducted to examin the effect of sodium propionate at different level of 0.03,0.06,0.10% on the number of bacteria and mold and to extend the storage life of laboratory processed biscuit. The results indicated that the use of 0.10% sodium propionate prolonged the storage peroid until the third month, while the use of 0.20% sodium propionate showed no growth of bacteria up to six month of storage, three types of bacteria has been isolated from processed biscuit, namely, Staphylococcus aureus, Bacillus cereus, Esherichia coli. using 0.10% sodium propionate showed no growth of mold up to three month of storage ,while using of 0.15 % and 0.20% sodium propionate prevent the growth

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Publication Date
Thu Nov 02 2017
Journal Name
Ibn Al-haitham Journal For Pure And Applied Sciences
Determination of Magnesium, Zinc, and Reduced Glutathione Levels in Serum of Asthmatic Patients
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Asthma  is a disease  characterized by hyper reactivity  of the trachea and   bronchi   to  reversible   either   spontaneously  or  as  a  result   of treatment.

In this study serum magnesium,  Zinc, and reduced glutathione  levels

were  meas ured  in  order  to  determine   their  levels  in  the  asthmatic patients and comparing  these levels with healthy controls.

Fifty-  four  asthmatic   patients  were  enrolled  in  the  study  and  had their pulmonary  function test, and the levels of Mg,Zn

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Publication Date
Wed Jan 02 2008
Journal Name
Journal Of The Faculty Of Medicine Baghdad
Quality Of Life Among Students In University Of Science And Technology In Jordan
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Objective:
To assess the subjective rating of quality of life of college students in University Of Science And Technology in Jordan as a sample of healthy educated
young population through applying the WHOQOL-BREF instrument as a field trial in Jordan and to compare the finding with similar previous study.
Methods
Three hundreds forms of Arabic version of the self-reporting questionnaire WHOQOL-BREF were distributed to students of third class attending the lecture
halls in three colleges (college of Engineering, college of science, college of  medicine) in the university campus in AL Ramtha–Jordan from the first of March
to first of may 2007., with respect to university regulations,interested parti

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Publication Date
Wed Jun 01 2016
Journal Name
Journal Of The College Of Languages (jcl)
The tragedies of love and death in the tragedy of Federico Garcia Lorca
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Abstract:

    Federico Garcia Lorca is considered in european and american literary circles as revolutionary symbol of contemporary literature writer through close association with the concerns of his country and the world, and also through the violent propensity to freedom, emancipation and innovation. This personal multi-talent has a significant impact in the spanish literary movement, in particularly, and in world, in general. If Lorca has andalusia blood, is no stranger to contemporary arab man to read to him, and contemplates his experience analyst and literary critic. This research is serious study of this character. There is no doubt the reader will put in front of many facts about personali

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