Evaluations of Potable Water Tanks Epoxy Coatings Performance Using Electrochemical Impedance Spectroscopic Method

Haider Hadi Jasim

doi:10.22153/kej.2017.12.005

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Publication Date

Mon Dec 11 2017

Journal Name

Al-khwarizmi Engineering Journal

Volume

13

Issue Number

2

DOI

10.22153/kej.2017.12.005

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Evaluations of Potable Water Tanks Epoxy Coatings Performance Using Electrochemical Impedance Spectroscopic Method

Corrosion mechanism

epoxy coats

porosity

potable water

EIS method.

Haider Hadi Jasim

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Abstract

The aim of this paper is to investigate and discuss the mechanisms of corrosion of epoxy coatings used for potable water tanks. Two distinct types of Jotun epoxy coatings: Tankguard 412 contained polyamine cured epoxy and Penguard HB contained polyamide cured epoxy, were tested and studied using the electrochemical impedance spectroscopic (EIS) method. The porosity of epoxy coatings was determined using EIS method. The obtained results showed that the two epoxy coatings have excellent behavior when applied and tested in potable water of Basrah city. Polyamine is more resistance to water corrosion compared to polyamide curing epoxy and has high impedance values. Microscopic inspection after test showed that the polyamine cured epoxy has blistering while the surface of polyamide cured epoxy showed pitting and blisters.

Keywords: Corrosion mechanism , epoxy coats, porosity, potable water, , EIS method.

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Wed Apr 02 2025

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Retos

Varied-method training and its effect on developing some functional physical abilities of youth basketball players

Rana

Suhad Qassem

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Objective: Preparing training in a diverse style for young basketball players, and identifying the effect of training in a diverse style on some physical abilities (for young basketball players).Research methodology: the researchers chose the experimental method to know the research problem and its objectives, as it is represented by designing two equal groups, the control and the experimental, with pre- and post-tests. The study community was determined by youth basketball players for the 2023-2024 season, as the research community is (104) players, and a sample of (20) players was drawn from the youth category from Al-A'dhamiyah Sports Club, and it was chosen intentionally because they are the clubs most committed to training, as

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Organizational performance in Iraqi SMEs: Validity and reliability questionnaire

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Publication Date

Wed Sep 12 2018

Journal Name

Ibn Al-haitham Journal For Pure And Applied Sciences

Network Performance Analysis Based on Network Simulator NS-2.

NS-2

Loss of packets

Required time

Transport layer protocol

Throthput

Delay time.

Maan

Naors

Nawfal

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NS-2 is a tool to simulate networks and events that occur per packet sequentially based on time and are widely used in the research field. NS-2 comes with NAM (Network Animator) that produces a visual representation it also supports several simulation protocols. The network can be tested end-to-end. This test includes data transmission, delay, jitter, packet-loss ratio and throughput. The Performance Analysis simulates a virtual network and tests for transport layer protocols at the same time with variable data and analyzes simulation results based on the network simulator NS-2.

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Publication Date

Sat Oct 01 2016

Journal Name

Journal Of Theoretical And Applied Information Technology

Factors affecting global virtual teams’ performance in software projects

Today the trend is to perform software development work via distributed geographical area among team

individual or even as an organization. However

due to the global market and international presence of many companies

there is a need to implement a global virtual teams. The global virtual team members are gradually engaged in globalized business environments across space

time and organizational boundaries via information and communication technologies. A global virtual team relies on communication

collaboration

and information exchange are the most important criteria in global virtual teams’ operations. The purpose of this paper is to answer two research questions. The first research question is to identify the factors affecting global virtual teams’ performance. A systematic literature review was conducted to answer the first research question. The second research question is on what the rank of the factor affecting the global virtual teams’ performance according to their level of effect on global virtual teams’ performance. Online survey was conducted within 103 developers and IT managers from eight IT companies to answer the second research question. The Statistical Package for Social Science (SPSS 22) was used to analyze the collected data. In this study

we investigated factors that affect global virtual teams’ performance

factors considered include cultural differences

language problems

time-zone differences

team size

technical problems

lack of trust

lack of sufficient training

and ICT problems. Also the findings indicated that lack of sufficient training is the highest level of effect on global virtual teams’ performance. On the other hand

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Baghdad Science Journal

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Tue Dec 20 2022

Journal Name

2022 International Conference On Computer And Applications (icca)

Improve Data Mining Techniques with a High-Performance Cluster

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Publication Date

Tue Oct 01 2013

Journal Name

Journal Of Economics And Administrative Sciences

Developing the high performance practices to attain Organizational effectiveness

الموارد البشرية- ومنظومة عمل الأداء العالي - وممارسات منظومة عمل الأداء العالي- والتوظيف الفعال- والتدريب المعمق- وتهيئة فرص المسار الوظيفي- ومشاركة العاملين- ومبدأ تقاسم المعلومات- ومبدأ تطوير المعرفة- ومبدأ ربط العائد بالأداء - ومبدأ المساواة

Human Resource Management- High Performance Work System- high performance work system practices- Effective staffing- comprehensive training- providing work career- employee participation -Shared Information- Knowledge Development - Performance – Reward linkage- Egalitarianism

سعد علي

سمر عادل

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Abstract

This current research aims to make theoretical frame for the thoughts and principle knowledge for high performance work system ،also trying to know the role that high performance work system practices which is (Effective staffing، comprehensive training، providing work career، and employee participation) play to enhance the organization effectiveness ، although knowing the principles of high performance work system which is: (Shared Information، Knowledge Development Performance and Reward linkage Egalitarianism)and its effect on the organizations. As well as defining the special concept of High performance wo

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Publication Date

Mon Aug 01 2022

Journal Name

Baghdad Science Journal

New and Existing Approaches Reviewing of Big Data Analysis with Hadoop Tools

Apache-Spark

Big Data

Hadoop

IOT

Social Media

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Abbas Fadhil

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Wed Mar 18 2020

Journal Name

Baghdad Science Journal

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Gold nanoparticles

Gum Arabic

Reduction

Stabilizing agent

Mazin K.

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The synthesis of nanoparticles (GNPs) from the reduction of HAuCl₄^.3H₂O by aluminum metal was obtained in aqueous solution with the use of Arabic gum as a stabilizing agent. The GNPs were characterized by TEM, AFM and Zeta potential spectroscopy. The reduction process was monitored over time by measuring ultraviolet spectra at a range of λ 520-525 nm. Also the color changes from yellow to ruby red, shape and size of GNP was studied by TEM. Shape was spherical and the size of particles was (12-17.5) nm. The best results were obtained at pH 6.

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Publication Date

Sun Jan 01 2023

Journal Name

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