Investigation of Electromagnetically Induced Transparency in the Rubidium Vapor

Abass H. Al-Wattar

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Publication Date

Sat Mar 01 2008

Journal Name

Iraqi Journal Of Physics

Volume

5

Issue Number

1

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Investigation of Electromagnetically Induced Transparency in the Rubidium Vapor

Rubidium Vapor

Abass H. Al-Wattar

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We have studied theoretically the response of atomic three- level cascade scheme
of rubidium vapor to a strong laser under conditions in which electromagnetically
induced transparency would be induced on a weak probe beam. We show that the
medium that is an opaque to a probe laser can, by applying both lasers
simultaneously, be made transparent.

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Publication Date

Sun Dec 30 2018

Journal Name

Journal Of Engineering

Investigation of R134a Flow Boiling Heat Transfer and Pressure Drop in the Evaporator Test Section of Refrigeration System

heat transfer

pressure drop

flow boiling

heat flux.

Ahmed J.

Zahraa Kareem

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This paper presents an experimental and theoretical analysis to investigate the two-phase flow boiling heat transfer coefficient and pressure drop of the refrigerant R-134a in the evaporator test section of the refrigeration system under different operating conditions. The test conditions considered are, for heat flux (13.7-36.6) kW/m², mass flux (52-105) kg/m².s, vapor quality (0.2-1) and saturation temperature (-15 to -3.7) ˚C. Experiments were carried out using a test rig for a 310W capacity refrigeration system, which is designed and constructed in the current work. Investigating of the experimental results has revealed that, the enhancement in local heat trans

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(3)

Publication Date

Tue Nov 01 2022

Journal Name

Bulletin Of National Institute Of Health Sciences

Using of Propolis on the treated rats induced with Polysystic ovarian syndrome by Litrozol drug

Propolis

ovaries

PCOS

lipid profile

Shaima R.

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Publication Date

Tue Dec 31 2013

Journal Name

Al-khwarizmi Engineering Journal

Thermo-Rheological Investigation and Modeling of the Shear Viscosity of Polypropylene above the Melting Temperature

Polymer melt

Polypropylene

thermo-rheological modeling

generalized Newtonian fluid

Cross model

shear viscosity

shear thinning behavior

rotational rheometer

high-pressure capillary rheometer

Ammar

Shatha K.

Olaf

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The increasing use of polymeric materials in the daily life, leads to challenges in the processing industry to deliver high performance materials with affordable terms. However, new processing techniques lead to high costs. In order to reduce processing costs it is necessary to understand the non-Newtonian behavior of the polymers in their molten state to be able to simulate the processes before the construction of the plants starts. Here the shear thinning behavior of the viscosity of polymeric melts is essential. Thus, this paper deals with the experimental investigation of the thermo-rheological behavior of the viscosity of one of the most used polymers (Polypropylene) over a wide range of temperatures and shear rates. Furthermo

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Publication Date

Sun May 19 2024

Journal Name

Basrah Journal Of Agricultural Sciences

Investigation on Field Performance of Plowing and Harvesting Potatoes in Southern Baghdad

: Mechanical harvesting

Potato harvest

Potato marketable

Soil tillage

Ahmed

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This field experiment, was conducted to investigate a comparison of two methods for harvesting potatoes: mechanical and handy when using moldboard and chisel plow for primary tillage and three different distances for planting tubers in the rows 15, 25, and 35 cm in silt clay loam soil south of Baghdad. The factorial experiment followed a randomized complete block design with three replications using L.S.D. 5 % and 1 %. Mechanical harvest recorded the best valid potato tubers at 88.78 %, marketable yield of 31.74 ton. ha-1, efficiency lifted 95.68 %, tubers damage index 28.41, speeding up the harvesting process and reducing time and effort. Handy harvest gave the least damage to potato tubers, 6.02 %, and unlifted potato tubers, 4.32 %. Howe

Publication Date

Thu Aug 01 2013

Journal Name

Micron

Computational investigation of electron path inside SEM chamber in mirror effect phenomenon

Hassan N.

Imad H.

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(8)

(7)

Publication Date

Tue Jan 17 2012

Journal Name

Journal Of Electron Devices

INVESTIGATION OF OPTICAL PROPERTIES OF THE PbS/CdS THIN FILMS BY THERMAL EVAPORATION

Hanaa I.

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In this work, we have investigated optical properties of the thermally evaporation PbS/CdS thin films. The optical constant such as (refractive index n, dielectric constant εi,r and Extinction coefficient κ) of the deposition films were obtained from the analysis of the experimental recorded transmittance spectral data. The optical band gap of PbS/CdS films is calculate from (αhυ)1/2 vs. photon energy curve.

Publication Date

Mon Mar 01 2010

Journal Name

Journal Of Computer Science

Dropping down the Maximum Item Set: Improving the Stylometric Authorship Attribution Algorithm in the Text Mining for Authorship Investigation

Mustafa T.K.

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(4)

(2)

Publication Date

Fri Aug 10 2018

Journal Name

In Book: Challenges In Mechanics Of Time-dependent Materials, Volume 2edition: 1stchapter: 12

Experimental Investigation of Segmental Post-tensioned Girders

Abbas Abdulmajeed

Mohannad

Basim

Mohanned

Ayman

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(4)

Publication Date

Sun Jul 01 2018

Journal Name

Materials Letters

Temperature stable electric field-induced strain in Er-doped BNT-BT-BKT ceramics

Zaid Waadulla

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(15)

(12)

Publication Date

Thu Sep 01 2022

Journal Name

Iop Conference Series: Earth And Environmental Science

Investigation of several heavy metals in Al-Saddah agricultural drainage in Hilla city /Iraq

Ithar Kamil Al-Mayaly

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Abstract<p>This study was done to determine the concentration of several heavy metals in the water of Al-Saddah agricultural drainage in Al-Saddah District in Babylon Province/Iraq. The concentrations of six heavy metals were measured (Pb, Cd, Cu, Hg, Fe, Zn). It was found that Pb concentration ranged from 0.06 mg/L at St.2 in autumn to 0.13 mg/L at St.2 in winter. Fe concentrations ranged from 0.04 mg/L at St.2 in autumn and winter to 0.41 at St.2 in Summer. Cd concentrations ranged from 0.008 mg/L at St.2 in summer to 0.05 mg/L at St.2 in winter. Cu concentrations ranged from 0.01 mg/L at St.1 in both autumn and winter to 0.63 mg/L at St.2 in winter. Hg concentrations was ranged from 0.002 mg/</p> ... Show More

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