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bsj-1335
Phase transformation study of Iraqi Bentonite with Al2O3 and MgO as additions at high temperatures
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Iraqi bentonite is used as main material for preparing ceramic samples with the additions of alumina and magnesia. X-ray diffractions analyses were carried out for the raw material at room temperature. The sequence of mineral phase's transformations of the bentonite for temperatures 1000 ,1100 ,1200 and 1250 ºC reflects that it finally transformed in to mullite 39.18% and cristobalite 62.82%. Samples of different weight constituent were prepared. The effect of its constitutional change reveals through its heat treatments at 1000,1100,1200,1250and 1300ºC .The samples of additions less than 15% of alumina and magnesia could not stand up to 1300ºC while the samples of addition more than 15% are stable .That is shown by analyzing of X-ray diffraction pattern after heat treatments of the samples. The growth of mineralogical phases like cordierite, anorthite ,mullite, cristobalite wollastonite with highest percentage ratio of anorthite 87.53%,cordirite77.35% and wallostonite 62.35% .So the presence refractory materials in the obtained samples highly support the possibility of using the bentonite with additions in the ceramics industry for high temperatures.

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Publication Date
Wed Oct 01 2008
Journal Name
Journal
Acanthosis Nigricans in Iraqi Patients Clinical, Histopathological and Theraputic Study
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KE Sharquie, AA Noaimi, AH Muhammad Ali, 2008 - Cited by 3

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Publication Date
Wed Oct 02 2024
Journal Name
Translation&linguistics
Verbal forms in French and Iraqi Arabic: a contrastive study
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Publication Date
Tue Jul 18 2023
Journal Name
Journal Of Current Researches On Social Sciences
A Study on Sociocultural Features among Turkish and Iraqi Women
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SM ADAI, BN RASHID, Journal of Current Researches on Social Sciences, 2023

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Publication Date
Sat Sep 30 2023
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
Analysis of the tax pilot phase strategy and its impact on the tax price in Iraq
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The research aims to identify the tax policy strategy adopted in Iraq after the change of the tax system in 2003 and beyond, and then make a comparison of the two strategies on corporate data whether they are charged with progressive tax rates and after the change of the system as the tax rates became fixed, and then indicate the changes In the tax proceeds, and knowing the imensions of the approved tax policy, is it a tax reform strategy or a strategy to attract investments.The research started from the problem of exposure of the Iraqi tax system to several changes, as this led to a reflection on the technical organization of taxes, in terms of the tax rate.The descriptive analytical approach was chosen to study the actual reality of th

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Publication Date
Sun Jul 09 2023
Journal Name
Journal Of Engineering
Analysis and Control of PWM Buck-Boost AC Chopper Fed Single-Phase Capacitor Run Induction Motor
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Single phase capacitor-run induction motors (IMs) are used in various applications such as home appliances and machine tools; they are affected by the sags or swells and any fault that can lead to disturb the supply and make it produce rms voltage below or above the rated motor voltage, which is 220V. A control system is designed to regulate the output voltage of the converter irrespective to the variation of the load and within a specific range of supply voltage variation. The steady-state equivalent circuit of the Buck-Boost chopper type AC voltage regulator, as well as the analysis of this circuit are presented in this paper. Switching device for the regulator is an IGBT Module. The proposed chopper uses pulse width modulation (PWM) c

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Publication Date
Wed May 31 2023
Journal Name
International Journal Of Advanced Technology And Engineering Exploration
Investigation of phase change characteristics for refrigerant R-134a flow in a double pipe heat exchanger with the use of thermal non-equilibrium model
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Almost all thermal systems utilize some type of heat exchanger. In a lot of cases, evaporators are important for systems like organic Rankine cycle systems. Evaporators give a share in a large portion of the capital cost, and their cost is significantly attached to their size or transfer area. Open-cell metal foams with high porosity are taken into consideration to enhance thermal performance without increase the size of heat exchangers. Numerous researchers have tried to find a representation of the temperature distribution closer to reality due to the different properties between the liquid and solid phases. Evaporation heat transfer in an annular pipe of double pipe heat exchanger (DPHEX) filled with cooper foam is investigated numerical

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Publication Date
Tue Dec 01 2009
Journal Name
Iraqi Journal Of Physics
Study the Effect of the High Voltage on The preparation of Polyvinyl Alcohol/ Tio2 Nano Fiber by Electrospinning
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Abstract:In this research we prepared nanofibers by electrospinning from poly (Vinyl Alcohol) / TiO2. The spectrum of the solution (Emission) was studied at 772 nm. Several process parameter were Investigated as concentration of PVA, the effect of distance from nozzle tip to the grounded collector (gap distance), and final the effect of high voltage. We find the optimum condition to prepare a narrow nanofibers is at concentration of PVA 16gm, the fiber has 20nm diameter.

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Publication Date
Wed Dec 30 2009
Journal Name
Iraqi Journal Of Physics
Study the Effect of the High Voltage on The preparation of Polyvinyl Alcohol/ Tio2 Nano Fiber by Electrospinning
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In this research we prepared nanofibers by electrospinning
from poly (Vinyl Alcohol) / TiO2. The spectrum of the solution
(Emission) was studied at 772 nm. Several process parameter were
Investigated as concentration of PVA, the effect of distance from
nozzle tip to the grounded collector (gap distance), and final the
effect of high voltage. We find the optimum condition to prepare a
narrow nanofibers is at concentration of PVA 16gm, the fiber has
20nm diameter

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Publication Date
Sat May 01 2021
Journal Name
Journal Of Physics: Conference Series
Morphological study of bronchial tree and lung in Iraqi weasel (Herpestes javanicus)
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Abstract<p>The current study aimed to identify the morphological description and branches of the bronchial tree and lung for the weasel <italic>Herpestes javanicus</italic> as one of the Iraqi mammals inhabiting the Iraqi environment. In the current study, 10 samples with an mean weight of 288-564 g were used, trachea and lung were removed from the samples and confirmed using proven solutions and laboratory tests were conducted on 5 samples of the study to identify the branches of the bronchial tree using the technique of casting resin and then exposing the samples to erosion. Weasel has a pair of bright pink sponge lungs that occupy most of the thoracic cavity. The lungs look similar </p> ... Show More
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Publication Date
Sun Mar 27 2022
Journal Name
Journal Of The College Of Basic Education
A Cross-Cultural Study of Criticism Strategies: Iraqi and Malay ESL Learners
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        Criticism, as an evaluative criterion, is a significant speech act for English language learners to improve their speech and actions in their academic life. Yet, it is realized differently across diverse cultures. Few studies have shown that the linguistics forms of one language are different from those available in another language. Hence, this study aims to investigate the cross-cultural similarities and differences between 60 Iraqi and Malay university learners in the use of criticism strategies. The data are collected using a Discourse Completion Test (DCT) and a Focus Group Interview (FGI). The data are coded based on Nguyen’s (2005) coding scheme of criticism in terms of the realization strategies. Qualitative

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