Study the effect of acid immersion on the hardness of (Epoxy – Granite) composite

Salma M. Hassan; Aseel A. Kareem; Harith I. Jafaar

doi:10.21123/bsj.2014.11.2.702-706

Details

Publication Date

Sun Jun 01 2014

Journal Name

Baghdad Science Journal

Volume

11

Issue Number

2

DOI

10.21123/bsj.2014.11.2.702-706

Choose Citation Style

Statistics

View publication

13

Statistics

Study the effect of acid immersion on the hardness of (Epoxy – Granite) composite

polymer composites

epoxy resin

Granite

Hardness

immersion

Salma M. Hassan

Aseel A. Kareem

Harith I. Jafaar

...Show More Authors

This work has been done with using of epoxy resin mixed with Granite powder were weighted by percent volume (5,10,15, and 20)%and then mixed with epoxy polymer to compose polymer composite. Hand lay-up technique is used in fabrication of the composite samples. Hardness test was carried out for the proper samples in both normal condition and after immersion in HCL (1 M and 2 M) solutions for periods ranging up to 10 weeks. After comparing the results between the polymer and their composite, the hardness increased with increasing Granite weight percent, it was found that Hardness were greater for the composites before immersion compared with their values after immersion.

View Publication Preview PDF

Quick Preview PDF

Publication Date

Thu Dec 14 2023

Journal Name

Malaysian Journal Of Mathematical Sciences

The Effect of Alternative Resource and Refuge on the Dynamical Behavior of Food Chain Model

Hadi Z.M.

Dahlia

...Show More Authors

This article examines and proposes a dietary chain model with a prey shelter and alternative food sources. It is anticipated that mid-predators' availability is positively correlated with the number of refuges. The solution's existence and exclusivity are examined. It is established that the solution is bounded. It is explored whether all potential equilibrium points exist and are locally stable. The Lyapunov approach is used to investigate the equilibrium points' worldwide stability. Utilizing a Sotomayor theorem application, local bifurcation is studied. Numerical simulation is used to better comprehend the dynamics of the model and define the control set of parameters.

View Publication

(10)

(5)

Publication Date

Fri Sep 15 2017

Journal Name

Journal Of Baghdad College Of Dentistry

Assessing The Radiopacity of Three Resin Composite Materials Using a Digital Radiography Technique

Noor S

Rasha H

Shatha

Raghad A

...Show More Authors

Background: Radiopacity is one of the prerequisites for dental materials, especially for composite restorations. It's essential for easy detection of secondary dental caries as well as observation of the radiographic interface between the materials and tooth structure. The aim of this study to assess the difference in radiopacity of different resin composites using a digital x-ray system. Materials and methods: Ten specimens (6mm diameter and 1mm thickness) of three types of composite resins (Evetric, Estelite Sigma Quick,and G-aenial) were fabricated using Teflon mold. The radiopacity was assessed using dental radiography equipment in combination with a phosphor plate digital system and a grey scale value aluminum step wedge with thickness

View Publication Preview PDF

Publication Date

Wed May 01 2019

Journal Name

Journal Of Engineering

Determination of the Optimum formula for Composite Motor Gasoline Octane Number Blending Enhancer

Octane number

motor gasoline

ethanol

design of experiment

Mini Tab software.

Alaa D. Jawad

Abdul Hussain Hurraija

Hussein Shaheed

...Show More Authors

To decrease the dependency of producing high octane number gasoline on the catalytic processes in petroleum refineries and to increase the gasoline pool, the effect of adding a suggested formula of composite blending octane number enhancer to motor gasoline composed of a mixture of oxygenated materials (ethanol and ether) and aromatic materials (toluene and xylene) was investigated by design of experiments made by Mini Tab 15 statistical software. The original gasoline before addition of the octane number blending enhancer has a value of (79) research octane number (RON). The design of experiments which study the optimum volumetric percentages of the four variables, ethanol, toluene, and ether and xylene materials leads

View Publication Preview PDF

Publication Date

Fri Sep 01 2017

Journal Name

Journal Of Baghdad College Of Dentistry

Assessing the Radiopacity of Three Resin Composite Materials Using a Digital Radiography Technique

Noor Salman

Rasha Hameid

Shatha

Raghad Abdulrazzaq

...Show More Authors

Background: Radiopacity is one of the prerequisites for dental materials, especially for composite restorations. It's essential for easy detection of secondary dental caries as well as observation of the radiographic interface between the materials and tooth structure. The aim of this study to assess the difference in radiopacity of different resin composites using a digital x-ray system. Materials and methods: Ten specimens (6mm diameter and 1mm thickness) of three types of composite resins (Evetric, Estelite Sigma Quick,and G-aenial) were fabricated using Teflon mold. The radiopacity was assessed using dental radiography equipment in combination with a phosphor plate digital system and a grey scale value aluminum step wedge with thickness

View Publication Preview PDF

Publication Date

Thu May 02 2019

Journal Name

University Of Anbar Sport And Physical Education Sciences

The Effect of the Exercises of Retrieving the ball from the Net on the Development of the skill of Defending the stadium in the Volleyball

Qusay Ahmed

...Show More Authors

QA Sarhan, University of Anbar Sport and Physical Education Sciences, 2019

View Publication

Publication Date

Mon Nov 05 2018

Journal Name

Iraqi Journal Of Market Research And Consumer Protection

EFFECT OF PLANT DENSITIES ON THE GROWTH AND YIELD OF SUNFLOWER Helianthus annuus L.: EFFECT OF PLANT DENSITIES ON THE GROWTH AND YIELD OF SUNFLOWER Helianthus annuus L.

كثافات نباتية

زهرة الشـمس

صفات زراعية

حاصل.

أروى عبد الكريـم

...Show More Authors

A field experiment was conducted at the experimental field of botanical garden, faculty of science, university of Baghdad, in order to study the effect of plant density on growth and yield of two local cultivars of sunflower (Sin Althieb and Shumose). The densities used were 4.4 and 8.8 plant/m². The results showed difference between cultivars in their agronomic traits and their yields. There was a significant increase in plant height and leaf area index by increasing the plant density, while head diameter, number of seeds and leaf area decreased. But the most significant effect was the increasing in yield and biological yield by increasing the plant density. There was an increase by 72% and 58% in the yield and 79% an

View Publication Preview PDF

Publication Date

Tue Jan 01 2019

Journal Name

Plant Archives

The seasonal effect on the water bodies in Iraqi marshlands

Taghreed Abdulhameed Naji

...Show More Authors

(5)

Publication Date

Sat Sep 23 2023

Journal Name

Iraqi Journal Of Pharmaceutical Sciences ( P-issn 1683 - 3597 E-issn 2521 - 3512)

Effect of pharmacist interventions on pulmonary function parameters of Iraqi asthmatic patients: A comparative study: Effect of pharmacist interventions on pulmonary functions tests

Asthma

pharmaceutical care

adherence

Pulmonary function test

Marwan S. Ibrahim

Mohammed Mahmood

...Show More Authors

Background: Despite the fact that asthma is a long-term disease that may be treated, many people are unable to control their symptoms due to a lack of knowledge about their condition. The study's purpose was to find out if a pharmacist intervention improved asthma management because of this.

Objective: this study designed to assess the effect of pharmaceutical care on pulmonary functions test.

Method: The study was completed in three months. The patients who were enrolled were divided into two groups: Group 1 consists of 23 asthma patients who were randomly assigned to receive conventional therapy for chronic bronchial asthma based on disease stage and se

View Publication Preview PDF

(2)

Publication Date

Sun Mar 19 2023

Journal Name

Journal Of Educational And Psychological Researches

The Effect of the Active Reading Strategy on the Achievement of the Second Year Middle School Students in Biology

active reading

second year middle school students

biology

Ruqayyah

Nadia

...Show More Authors

Abstract

The aim of the current research is to identify the effect of the effective reading strategy on the achievement of second-middle students in biology, as well as the imaginative thinking skills of students. The researcher adopted the experimental design with partial control to achieve the goal of the research. The current research community identified the second-middle students in the government schools of the Baghdad Education Directorate / Rusafa I for the academic year (2021-2022 AD). The Safina Intermediate School for Girls was chosen to be the research sample in the form of intentionally, two classes were randomly selected from a total of four classes, one of them is experimental and the other is con

View Publication Preview PDF

Publication Date

Sun Jan 25 2026

Journal Name

Journal Of Studies And Researches Of Sport Education

The effect of using the educational bag on the level of learning some offensive skills with the epee weapon

The effect of using the educational bag on the level of learning some offensive skills with the epee weaponDr. Lamia Hassan Al-Diwan

D. Fatima Abdel-Maliki

Dr. Kholoud Laith Abdel Karim2005 Technical and technological development has been increasing day after day and has included all areas of life

including the educational process

which has benefited from technologies such as (computer

video

and pictorial models) in introducing them as tools to aid the learning process. Educational packages have proven their effectiveness in education as they prepare learners with different areas of experience. Sensory audio-visual

through which the learner acquires different educational experiences through interaction

practice

participation

and communication with the data of the surrounding environment through the diversity of knowledge sources that suit his inclinations and needs. The research aimed to prepare an educational bag to teach some offensive skills in the epee weapon. And to find out the effect of using the proposed educational bag on the level of learning some offensive skills in the epee weapon. We hypothesized that the proposed educational package has a positive impact on the level of learning some offensive skills with the epee weapon. There were statistically significant differences in testing the level of learning some offensive skills with the epee weapon between the post-tests of the experimental and control groups

and in favor of the experimental group. The researchers used the experimental method to suit the nature of solving the research problem

and the research sample was chosen intentionally from the girls’ fencing club players (beginners) in the governorate. Basra for the year 2005. The number of players was (16)

which represented the entire study population. The experiment was conducted in the sports hall of the South Oil Sports Club in Basra. We concluded that the educational package has a positive impact on the level of learning some offensive skills in the epee weapon. There were statistically significant differences in the learning level test for some offensive skills in the epee weapon between the experimental group and the control group in the post-tests and in favor of the experimental group. We recommended the necessity of using the proposed educational curriculum to learn some offensive skills in the epee weapon in fencing lessons or in sports clubs. Adopting modern techniques in training

teaching or teaching fencing skills and searching for new methods. Conducting similar studies on other skills or different samples.Keywords: educational bag

offensive skills with an epee weapon

fencing game. Teaching methods. Basra Girl Sports ClubLamya Hassan Aldewan [email protected] of Basra - College of Education and Sports Scienceshttps://orcid.org/0000-0003-0377-6915 Keywords educational bag

offensive skills with an epee weapon

fencing game. Teaching methods. Basra Girl Sports Club

‏Lamyaa

Fatima

...Show More Authors

View Publication

1 2 ... 79 80 81 82 ... 2716 2717