Temperatture esttiimattiion off EXDRA and SSUMI dwarff Nova systtems from spectroscopic data

Arshed Ali Kadhem

doi:10.30723/ijp.v13i27.261

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Publication Date

Mon Feb 04 2019

Journal Name

Iraqi Journal Of Physics

Volume

13

Issue Number

27

DOI

10.30723/ijp.v13i27.261

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Temperatture esttiimattiion off EXDRA and SSUMI dwarff Nova systtems from spectroscopic data

Dwarf Nova

Fourier Model

transform and mathematical modeling.

Arshed Ali Kadhem

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The seasonal behavior of the light curve for selected star SS UMI and EXDRA during outburst cycle is studied. This behavior describes maximum temperature of outburst in dwarf nova. The raw data has been mathematically modeled by fitting Gaussian function based on the full width of the half maximum and the maximum value of the Gaussian. The results of this modeling describe the value of temperature of the dwarf novae star system leading to identify the type of elements that each dwarf nova consisted of.

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Publication Date

Thu Jan 02 2020

Journal Name

Journal Of The College Of Languages (jcl)

The Problem of Translating Antonyms in The Holy Qur’an into German’’, in an analytical manner: Das Übersetzungsproblem der Antonyme im Heiligen Koran ins Deutsche Analytische Studie

opposition

translation

meaning

interpretation

and difference of opinions

Anatomie

Übersetzung

Bedeutung

Interpretation und Meinungenunterschied

Hilal Abdul Hamza

Abdulnassir Neamah

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The present study is entitled “Problems of Translating Holy Qur’an Antonyms into German: An Analytical Study”. It discusses some of the problems of translating Holy Qur’an verses that contain words so opposite in meaning to another word. The main concern of the study stresses some of the errors in translating the oppositeness of certain words of Holy Qur’an from Arabic into other languages like German, a problem that can be traced back to the fact that such words may have two opposites in meaning, one is considered and the other is completely neglected.

The errors in translating al Qur’an Antonyms can be summarized for several reasons: literal translation, ignorance of the different view

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Publication Date

Tue May 01 2018

Journal Name

Journal Of Engineering

Prediction of the Effect of Using Stone Column in Clayey Soil on the Behavior of Circular Footing by ANN Model

stone column

circular footing

ground improvement

artificial neural network

bending moment

and shear forces.

Omar Khaleel Ismael

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Shallow foundations are usually used for structures with light to moderate loads where the soil underneath can carry them. In some cases, soil strength and/or other properties are not adequate and require improvement using one of the ground improvement techniques. Stone column is one of the common improvement techniques in which a column of stone is installed vertically in clayey soils. Stone columns are usually used to increase soil strength and to accelerate soil consolidation by acting as vertical drains. Many researches have been done to estimate the behavior of the improved soil. However, none of them considered the effect of stone column geometry on the behavior of the circular footing. In this research, finite ele

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Publication Date

Mon Jan 01 2024

Journal Name

Anais Da Academia Brasileira De Ciências

Morphological study for Accipitrid birds (Accipitridforms, Accipitridae) in Iraq; part two

A part two of Accipitridae Family members that belong to three genera: Circus

Gyps

and Neophron were documented as morphometrics

distribution ranges

and conservation status were reviewed and comprehensively discussed. A total of 29 voucher specimens belong to six species which are conserved in the “Iraq Natural History Research Center and Museum INHM” as follow: Marsh Harrier Circus aeruginosus (Linnaeus

1758)

Hen Harrier Circus cyaneus (Linnaeus

1766)

Montagus Harrier Circus pygargus (Linnaeus

1758)

Pallid Harrier Circus macrourus (Gmelin

1770)

Egyptian vulture Neophron percnopterus (Linnaeus

1758)

and Griffon vulture Gyps fulfus (Hablitz

1783). The results revealed significant criteria about near threatened NT species IUCN and Birdlife International listed as Pallid Harrier Circus macrourus

and Endangered (EN) species as Egyptian vulture Neophron percnopterus globally decreasing population trend.

HIND D.

KHALIDA I.

AFKAR M.

SUHAD Y.

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Publication Date

Sun Jan 01 2012

Journal Name

Journal Of Computing

Fibrewise Near Topological Spaces

Fibrewise topological spaces

Fibrewise near topological spaces

Fibrewise near closed and near open topological spaces.

A. A.

S. S.

Y. Y.

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In this paper we define and study new concepts of fibrewise topological spaces over B namely, fibrewise near topological spaces over B. Also, we introduce the concepts of fibrewise near closed and near open topological spaces over B; Furthermore we state and prove several Propositions concerning with these concepts.

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Publication Date

Thu Sep 30 2004

Journal Name

Iraqi Journal Of Chemical And Petroleum Engineering

Corrosion Inhibition of Steel Reinforcement in Concrete

corrosion of steel

Pomegranate husk and tannate

% inhibition

Chemical inhibitors

IR-drop term

concrete resistance

Aprael S.

Baha'a G.

Noora R.

...Show More Authors

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Publication Date

Wed Oct 15 2014

Journal Name

International Journal Of Advanced Research

A survey/ Development of Passive Optical Access Networks Technologies

Passive Optical Network

Time Division Multiple Access

Wavelength Division Multiplexing and Orthogonal Frequency Division Multiplexing.

Nahlah Abdulrahman

...Show More Authors

The bandwidth requirements of telecommunication network users increased rapidly during the last decades. Optical access technologies must provide the bandwidth demand for each user. The passive optical access networks (PONs) support a maximum data rate of 100 Gbps by using the Orthogonal Frequency Division Multiplexing (OFDM) technique in the optical access network. In this paper, the optical broadband access networks with many techniques from Time Division Multiplexing Passive Optical Networks (TDM PON) to Orthogonal Frequency Division Multiplex Passive Optical Networks (OFDM PON) are presented. The architectures, advantages, disadvantages, and main parameters of these optical access networks are discussed and reported which have many ad

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Publication Date

Sun Dec 02 2012

Journal Name

Baghdad Science Journal

Stability of Back Propagation Training Algorithm for Neural Networks

" BP training algorithm

Ann

Gradient Descent Training Algorithm

Gradient Descent with Momentum and Lyapunov Stability ."

Luma. N. M.

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In this paper, we derive and prove the stability bounds of the momentum coefficient µ and the learning rate ? of the back propagation updating rule in Artificial Neural Networks .The theoretical upper bound of learning rate ? is derived and its practical approximation is obtained

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Publication Date

Sat Aug 01 2020

Journal Name

Key Engineering Materials

Compressive Strength Performance of Reactive Powder Concrete Using Different Types of Materials as a Partial Replacement of Fine Aggregate

Reactive Powder Concrete

Porcelain aggregate

Glass Waste

Granular Activated Carbon

Partial replacement and Compressive Strength

Shatha D.

Shatha

Rawaa K.

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Reactive Powder Concrete (RPC) can be incorporate as a one of the most important and progressive concrete technology. It is a special type of ultra-high strength concrete (UHSC) that’s exclude the coarse aggregate from its constitutive materials. In this research an experimental study had been carried out to investigate the effect of using three types of materials (porcelain aggregate) and others sustainable materials (glass waste and granular activated carbon) as a partial replacement of fine aggregate. Four percentages had considered (0, 10, 15 and 20) % to achieve better understanding for the influence of these materials upon the compressive strength of RPC. Four curing ages had included in this study, these are; 7, 28, 60 and

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Publication Date

Thu Mar 01 2018

Journal Name

Journal Of Engineering

Numerical Investigation of the Effect of Inserted Twisted Tape inside Submerged Bundle Tubes on its Thermal Performance

Heat transfer enhancement

friction factor

twist ratio

heat exchanger

twisted tape

laminar and turbulent flow.

Kamal Mohammed

Abdalrazzaq K.

...Show More Authors

Twisted tape insertion in smooth plain tube is one of types of passive methods that is used to enhance heat transfer. Swirl fluid flow inside tube and related heat transfer characteristics are very complex. ANSYS FLUENT (V 16.1) and ASPEN industrial program are used in analyzing this technique for enhancement heat transfer. A circular plain tube has length L=8534mm and 17 mm inner diameter with twisted tape has twist ratio of y = (H/D) = (150/17) =8.8 along with a plain tube were considered for this study. Eight Reynolds numbers (Re) of 784, 1000, 2000, 3000, 4000, 5000, 6000 and 7000 are used to analyze the response of thermal performance. Crude oil API 28 exit temperature, film heat transfer coefficient, Nusselt number

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Publication Date

Fri Jun 29 2018

Journal Name

Journal Of Engineering

Numerical Investigation of the Effect of Inserted Twisted Tape inside Submerged Bundle Tubes on its Thermal Performance

Heat transfer enhancement

friction factor

twist ratio

heat exchanger

twisted tape

laminar and turbulent flow.

Kamal Mohammed

Abdalrazzaq K.

...Show More Authors

Twisted tape insertion in the smooth plain tube is one of the types of passive methods that are used to enhance heat transfer. Swirl fluid flow inside the tube and related heat transfer characteristics are very complex. ANSYS FLUENT (V 16.1) and ASPEN industrial program are used in analyzing this technique for enhancement heat transfer. A circular plain tube has length L=8534mm and 17 mm inner diameter with a twisted tape of twist ratio of y = (H/D) = (150/17) =8.8 along the plain tube were considered for this study. Eight Reynolds numbers (Re) of 784, 1000, 2000, 3000, 4000, 5000, 6000 and 7000 are used to analyze the response of thermal performance. Crude oil API 28 exit temperature, film heat transfer coefficient, Nus

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