Double cross-over and cross-over with extra period designs -comparative
study-

Omar Abdulmohsin Ali

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Publication Date

Wed Jun 06 2001

Journal Name

مجلة العلوم الاقتصادية والادارية

Volume

8

Issue Number

26

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Double cross-over and cross-over with extra period designs -comparative study-

Experimental Design

Relative Efficiency

Omar Abdulmohsin Ali

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The goal of the research is to find the optimization in the test of the appropriate cross-over design for the experiment that the researcher is carrying out (under assumption that there are carry-over effects of the treatments) to posterior periods after the application period (which is often assumed to be the first period). The comparison between the double cross-over design and the cross-over design with extra period. The similarities and differences between the two designs were studied by measuring the Relative Efficiency (RE) of the experiment.

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Publication Date

Mon Sep 01 2025

Journal Name

Journal Of Oral Biology And Craniofacial Research

Morphological & chemo mechanical analysis of exposed cervical dentin treated with three different desensitizing pastes (comparative in vitro study)

Manar S.

Rasha H.

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Background Obstructing dentinal tubules is a valuable approach for managing dentin hypersensitivity. Although various agents promote dentin remineralization, direct comparisons between theobromine, bioactive glass (BAG), and nano-hydroxyapatite (Nano-HAP) under simulated oral conditions remain limited. To fill this gap, this in vitro study aimed to evaluate and compare the effectiveness of these three treatments on exposed cervical dentin. The assessment focused on their chemical, morphological, and mechanical effects on dentin. Materials and methods Forty-eight human dentin slabs were obtained from the cervical portions of twelve sound premolar teeth. Baseline Raman spectroscopy and VMH tests were done to exclude outliers. All specimens we

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Publication Date

Mon Apr 01 2024

Journal Name

Iraqi Journal Of Oil And Gas Research (ijogr)

Comparative study of electrochemical oxidation system hybrid with photocatalytic system for the treatment of Al-Najaf petroleum refinery wastewater

Husham

Khalid

Ali

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Publication Date

Mon Mar 15 2021

Journal Name

Route Educational & Social Science Journal

THE EFFECTIVENESS OF POLITICAL IDEOLOGY IN THE DESIGNS OF INTERNATIONAL MAGAZINE COVERS

Effectiveness

Ideological

Political

Printed Design

Covers

Magazines

International

Structure

Speech

Graphic

Art

Visual

Events

Raghad Fattah RADHI

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Raghad Fattah RADHI

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Publication Date

Sun Apr 17 2016

Journal Name

Al-academy

Encrypted form and content in contemporary designs fabrics and aesthetic implications: زينب عبد علي محسن الزبيدي

Zainab

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This research was dealing with the aesthetic impact of encryption in form and content and aesthetic implications in the design of contemporary fabrics. That's where the design of the cloth is linked to the continuous development and continuous innovation and the pursuit of the all-new innovative designs and at the same time an unmarked Cryptographic with semantics and symbols reflect reality aesthetically pleasing and contains four chapters on the research :The first chapter discusses the research problem and its significance is the current quest ( encryption in form and content in contemporary designs fabrics and aesthetic implications ) in that it shows the importance of encryption in the design of fabrics and foundation design configu

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Publication Date

Sat Mar 31 2018

Journal Name

Journal Of Engineering

Effect of Using Extra Fins on the Pin Fin Classic Geometry for Enhancement Heat Sink Performance using EGM Method

Pin Fin

Heat Sink

EGM method.

Kadhum Audaa

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In the present study, the effect of new cross-section fin geometries on overall thermal/fluid performance had been investigated. The cross-section included the base original geometry of (triangular, square, circular, and elliptical pin fins) by adding exterior extra fins along the sides of the origin fins. The present extra fins include rectangular extra fin of 2 mm (height) and 4 mm (width) and triangular extra fin of 2 mm (base) 4 mm (height). The use of entropy generation minimization method (EGM) allows the combined effect of thermal resistance and pressure drop to be assessed through the simultaneous interaction with the heat sink. A general dimensionless expression for the entropy generation rate is obtained by con

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(5)

Publication Date

Tue Aug 16 2022

Journal Name

Heat Transfer

Experimental study on thermo‐hydraulic performance of metal foam twisted tape in a double pipe heat exchanger

Issam M. A.

Raed G.

Ammar A.

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AbstractA recent study compared experimentally the hydraulic and thermal activity of twisted tape inserts for two types, metal foam twisted tape (MFTT) and traditional twisted tape (TTT), in a double pipe heat exchanger. The investigation goal of the innovatively designed MFTT is to enhance the heat transfer process, which provides a higher thermal enhancement factor over those of TTT under the same conditions. Heat transfer activity in terms of Nusselt number (<italic>Nu</italic>) and Nusselt number ratio (<italic>Nu</italic>/<italic>Nu</italic>o) as the heat exchanger equipped with the proposed MFTT and TTT inserts with various tape‐twist ratios ( ... Show More

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(12)

Publication Date

Thu Sep 01 2011

Journal Name

Journal Of Economics And Administrative Sciences

Financial Depth Measurements / Analytical Study in Selected Countries for the Period 1980-2008

صبحي حسون

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This research deals with the most important indicators used to measure the phenomenon of financial depth, beyond the traditional indicators, which are called quantitative indicators, which is shown to be inadequate to show the facts accurately, but it may come in the results of a counterfactual, although reliable in econometric studies done in this regard.

Therefore, this research has sought to put forward alternative indicators, is the structural indicators, and financial prices, and availability of financial instruments, and cost of transactions concluded, in order to measure the phenomenon of financial depth.

After using and analyzing data collected from countries the research

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(1)

Publication Date

Wed Nov 01 2023

Journal Name

Iop Conference Series: Earth And Environmental Science

Manufacturing and Testing a Double Action Feed Pellet Durability Measuring Device

Basim Aboud

Abdulrazzak A.

Luma K.

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AbstractThe experiment was aimed to evaluate a locally manufactured a dual-action device used for measuring feed pellets durability. The device performs dropping process in conventional devices, then sifting process to separate the pellets from the crumbles simultaneously, with a control the motor speed by using the pulse width modulation (PWM) Technique. The device performance was compared with the durability measuring device of a moving drop box. Rotational speed, diameter of the die holes of the machine was used in this study. The results showed that increasing the rotational speed of the die from 280 to 300 and to 320 rpm, increasing the die holes diameter from 3 to 4 and to 5 mm, led to ... Show More

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(5)

(1)

Publication Date

Mon Dec 04 2023

Journal Name

Aip Conf. Proc

Double LA-transform and their properties for solving partial differential equations

Noor A. Hussein

May Mohammed Helal

L. N. M. Tawfiq

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(7)

Publication Date

Sun Jul 07 2013

Journal Name

Journal Of Educational And Psychological Researches

Measurement of double-thinking among university students

double-thinking

university students

علي محسن ياس

محمود كاظم التميمي

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Current search targeted to:
  1 - Measurement of double-thinking among university students.
  2 - Identify the significant differences in the degrees of double-thinking members of the sample according to the variables of sex (male - female), specialty (I know - a human).
      To achieve the objectives of the research chose researcher samples from the community of the first search for statistical analysis, has reached 400 students, and the second sample of the application of the final, has reached (480) students were selected randomly with simple check of equal value, and the researcher building a search tool double think, After the completion of the scale-building measures think

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