Formulation of approximate mathematical model for incoming water to some dams on Tigris and Euphrates Rivers using spline function

H.A.A Al-Razak; Muna M. Mustafa

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Publication Date

Tue Jan 01 2019

Journal Name

Australian Journal Of Mathematical Analysis And Applications

Volume

2

Issue Number

16

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Formulation of approximate mathematical model for incoming water to some dams on Tigris and Euphrates Rivers using spline function

Approximation mathematical model

Dams

Incoming water

Spline function

Tigers and Euphrates Rivers

Nadia M. J. Ibrahem

H.A.A Al-Razak

Muna M. Mustafa

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n this paper, we formulate three mathematical models using spline functions, such as linear, quadratic and cubic functions to approximate the mathematical model for incoming water to some dams. We will implement this model on dams of both rivers; dams on the Tigris are Mosul and Amara while dams on the Euphrates are Hadetha and Al-Hindya.

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Publication Date

Tue Sep 01 2020

Journal Name

Al-khwarizmi Engineering Journal

Arduino-Based Controller for Sequence Development of Automated Manufacturing System

Shahad Sarmad

Maher Yahya

Ahmed M.

...Show More Authors

It has become necessary to change from a traditional system to an automated system in production processes, because it has high advantages. The most important of them is improving and increasing production. But there is still a need to improve and develop the work of these systems. The objective of this work is to study time reduction by combining multiple sequences of operations into one process. To carry out this work, the pneumatic system is designed to decrease\ increase the time of the sequence that performs a pick and place process through optimizing the sequences based on the obstacle dimensions. Three axes are represented using pneumatic cylinders that move according to the sequence used. The system is implemented and

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(5)

Publication Date

Tue Nov 20 2012

Journal Name

J. Of University Of Anbar For Pure Science

Laser Processing For Nanoscale Size Quantum Wires of AlGaAs/GaAs

Quantum wire

Confinement Factor

optical Gain

Ahlam H.

Ebtisam M-T.

Mohammed Hamad

...Show More Authors

In this work we investigate and calculate theoretically the variation in a number of optoelectronic properties of AlGaAs/GaAs quantum wire laser, with emphasis on the effect of wire radius on the confinement factor, density of states and gain factor have been calculated. It is found that there exist a critical wire radius (rc) under which the confinement of carriers are very weak. Whereas, above rc the confinement factor and hence the gain increase with increasing the wire radius.

Publication Date

Wed Dec 28 2022

Journal Name

Journal Of Chemical Technology And Metallurgy

THERMODYNAMIC ANALYSIS OF MOISTURE ADSORPTION ISOTHERM FOR MEFENAMIC ACID TABLETS

Nada

Maha

Sama

...Show More Authors

Publication Date

Thu Oct 01 2009

Journal Name

2009 Ieee Symposium On Industrial Electronics & Applications

Assessing combinatorial interaction strategy for reverse engineering of combinational circuits

Mohammed I.

Kamal Z.

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(9)

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Publication Date

Thu Mar 01 2012

Journal Name

Al-khwarzmi Engineering Journal

Dynamic response analysis for the parabolic trough of solar collector

Haider

...Show More Authors

parabolic trough

Publication Date

Sun Feb 01 2026

Journal Name

Applied Acoustics

Development of an acoustic vacuum gauge for low-pressure measurement

Waleed Ibrahim

Duraid A.

Aseel Kamel

...Show More Authors

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Publication Date

Sun May 16 2021

Journal Name

Graphs And Combinatorics

Commuting Involution Graphs for Certain Exceptional Groups of Lie Type

Ali

...Show More Authors

Abstract<p>Suppose that <italic>G</italic> is a finite group and <italic>X</italic> is a <italic>G</italic>-conjugacy classes of involutions. The commuting involution graph <inline-formula><alternatives><tex-math>$${\mathcal {C}}(G,X)$$</tex-math><math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mrow> <mi>C</mi> <mo>(</mo> <mi>G</mi> <mo>,</mo> <mi>X</mi> <mo>)</mo> </mrow> </math></alternatives></inline-formula> is</p> ... Show More

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(2)

Publication Date

Fri Jun 30 2017

Journal Name

Iraqi Journal Of Chemical And Petroleum Engineering

Preparation of PPSU Hollow Fiber Nanofiltration Membranes for Nanofiltration Application

PPSU

hollow fiber membrane

nanofiltration

morphology

heavy metals removal.

Bashir Y.

Areej D.

Hussein A.

Thamer J.

Qusay F.

Thamera

Lamees H.

Hamsa

Remonda H.

...Show More Authors

PPSU hollow fiber nanofiltration membranes are prepared by applying two concentrations and various extrusion pressures according to the phase inversion method. Cross-sectional area and outer structures were characterized by using scanning electron microscope (SEM) and atomic force microscopy (AFM). In additional to the pore size distribution, either the mean roughness or the mean pore size of the PPSU hollow fiber surfaces was evaluated by AFM. It was found that the morphology of the PPSU fibers had both sponge-like and finger-like structures through different extrusion pressures and PPSU concentrations. The mean pore size and mean roughness for inner and outer surfaces were seen to be decreased with the increase of extrusion pressure at

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Publication Date

Tue Mar 20 2018

Journal Name

Offshore Technology Conference Asia

Prediction of Hydrate Phase Equilibrium Conditions for Different Gas Mixtures

new correlation

hydrate equilibrium temperature

correlation

prediction

gas mixture

hammerschmidt

phase equilibria

artificial intelligence

upstream oil & gas

hydrate

Dhifaf Jaafar

Stefan

Maxim

Ahmed

...Show More Authors

Abstract<p>Gas hydrate formation poses a significant threat to the production, processing, and transportation of natural gas. Accurate predictions of gas hydrate equilibrium conditions are essential for designing the gas production systems at safe operating conditions and mitigating the problems caused by hydrates formation. A new hydrate correlation for predicting gas hydrate equilibrium conditions was obtained for different gas mixtures containing methane, nitrogen and carbon dioxide. The new correlation is proposed for a pressure range of 1.7-330 MPa, a temperature range of 273-320 K, and for gas mixtures with specific gravity range of 0.553 to 1. The nonlinear regression technique was applie</p> ... Show More

(6)

Publication Date

Sun Jun 01 2008

Journal Name

Baghdad Science Journal

Dietary Assessment for Meals of Nurseries Children in Baghdad City

Salim S.

Fatin Fakhir Al-deen

Nadia Hussein

...Show More Authors

The objective of this study was to assess the nutritional status of childs of nurseries in Baghdad city so that an early detection of malnutrition cases could be carried out. The results revealed that the daily consumption of food calories, protein, fat and carbohydrate were 1180.5 calories, 27.2gm, 38gm and 180gm, respectively, which were less than the RDA values and the percentages of these nutrients supplied by the food intake were 90.8, 83.7, 87.3 and 90.3%, respectively. It was also demonstrated that the highest percentages of stunting, underweight and wasting, which amounted to 32, 22.7 and 1.5%, respectively, were among those childs who obtained inadequate calories, while the percentages of the forementioned malnutrition cases amon

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