Energy transfer process between two laser compounds coumarin 334 & rhodamine 590

Nathera Ali

Details

Publication Date

Thu Dec 01 2016

Journal Name

Iraqi Journal Of Physics, 2016

Volume

Vol.14

Choose Citation Style

Statistics

View publication

9

Statistics

Energy transfer process between two laser compounds coumarin 334 & rhodamine 590

Key words:Energy transfer

laser compounds

dye spectrum.

Nathera Ali

...Show More Authors

Abstract: In the current research the absorption and fluorescence spectrum of Coumarin (334) and Rhodamine (590) in ethanol solvent at different concentration (10-3, 10-4, 10-5) M had been studied. The absorption intensity of these dyes increases as the Concentration increase in addition to that the spectrum was shifted towards the longer wavelength (red shift). The energy transfer process has been investigated after achievement this condition. The fluorescence peak intensity of donor molecule was decrease and its bandwidth will increases on the contrary of the acceptor molecule its intensity increase gradually and its bandwidth decreases as the acceptor concentration increase.

Preview PDF

Quick Preview PDF

Publication Date

Fri Dec 01 2023

Journal Name

Iop Conference Series: Earth And Environmental Science

Studying of the Amount of Energy Required to Operate the Nursery Tray Planting Machine

Mageed F.F.

Abdul Razzak A.

...Show More Authors

Abstract<p>A study was conducted at the University of Baghdad-College of Agricultural Engineering Sciences - Department of Agricultural Machinery and Equipment for the agricultural season 2023 with the aim of designing, manufacturing and testing a machine used to planting agricultural nursery tray with different types of vegetable or horticultural seeds or forest seeds of various forms, and using different agricultural media where they are conducted The planting process is by pulling the seeds with a negative pressure vacuum system, and then they are feding to the dishes in their right place to complete the planting process. The study included three factors: The speed of the main belt in three l</p> ... Show More

View Publication

(2)

(1)

Publication Date

Sat Jul 01 2000

Journal Name

Bulletin Of The Iraq Natural History Museum (p-issn: 1017-8678 , E-issn: 2311-9799)

UTTILIZATION OF LIPIDS AS SOURCE OF ENERGY DURING HIBERNATION OF RANA RIDIBUNDA PALLAS, 1771

Alwan J.

Ehsan F.

...Show More Authors

The aim of this study is to calculate the ene expenditure from fatty substance contents of the
frog. Rana ridibunda during its hibernation. It was found that, almost, all frogs enter
hibernation during the last week of December and emerge from hibernation during the first
week of March. Hence, January and February are considered the hibernation period.
December is the pre-hibernation period and March is the post-hibernation period. The
reduction in percent of body lipid during the hibernation period was 4.8% in males and 7.7%
in females. The reduction in percent of lipid of fat bodies during the hibernation period was
2.758% in males and 0.733% in females.
The calorific value of R. ridibunda lipid amounted to 1233

View Publication Preview PDF

Publication Date

Sun Jul 09 2023

Journal Name

Journal Of Engineering

Biogas Recovery from Anaerobic Co-Digestion of Poultry House Wastes for Clean Energy Production

Biogas

anaerobic digestion

lignocellulosic waste

clean energy.

Zainab Ziad

Ali Raad

...Show More Authors

Anaerobic digestion is a technology widely used for treatment of organic waste for biogas production as a source for clean energy. In this study, poultry house wastes (PHW) material was examined as a source for biogas production. The effects of inoculum addition, pretreatment of the substrate, and temperature on the biogas production were taken into full consideration. Results revealed that the effect of inoculum addition was more significant than the alkaline pretreatment of raw waste materials. The biogas recovery from inoculated waste materials exceeds its production from wastes without inoculation by approximately 70% at mesophilic conditions. Whereby, the increase of biogas recovery from pretreated wastes was by 20% higher than its

View Publication Preview PDF

(2)

Publication Date

Wed Jun 30 2021

Journal Name

International Journal Of Intelligent Engineering And Systems

Promising Gains of 5G Networks with Enhancing Energy Efficiency Using Improved Linear Precoding Schemes

Dheyaa Jasim

...Show More Authors

(2)

Publication Date

Sun Jan 01 2023

Journal Name

Journal Of Ecological Engineering

Contaminants Removal from Real Refinery Wastewater Associated with Energy Generation in Microbial Fuel Cell

Noor Mohsen

Saja Mohsen

Thaer

Hayder

...Show More Authors

View Publication

(26)

(21)

Publication Date

Fri Mar 05 2021

Journal Name

Materials

Optimum Placement of Heating Tubes in a Multi-Tube Latent Heat Thermal Energy Storage

Mohammad

Hayder

Ali

Mohammad S.

Obai

Jasim M.

Wahiba

Pouyan

...Show More Authors

Utilizing phase change materials in thermal energy storage systems is commonly considered as an alternative solution for the effective use of energy. This study presents numerical simulations of the charging process for a multitube latent heat thermal energy storage system. A thermal energy storage model, consisting of five tubes of heat transfer fluids, was investigated using Rubitherm phase change material (RT35) as the. The locations of the tubes were optimized by applying the Taguchi method. The thermal behavior of the unit was evaluated by considering the liquid fraction graphs, streamlines, and isotherm contours. The numerical model was first verified compared with existed experimental data from the literature. The outcomes re

View Publication Preview PDF

(19)

(21)

Publication Date

Fri Sep 15 2023

Journal Name

Journal Of Baghdad College Of Dentistry

FEM: Mono-implant cement retained crown with two different adhesive materials

FEA

mono-Implant

cement

adhesive

all-ceramic

stress

deformation

Shahad M

Saja A

Raad S

...Show More Authors

Background: The finite element method (FEM) is expected to be one of the most effective computational tools for measuring the stress on implant-supported restorations. This study was designed using the 3D-FEM to evaluate the effect of two adhesive luting types of cement on the occlusal stress and deformation of a hybrid crown cemented to a mono-implant. Materials and Method: The mono-screw STL file was imported into the CAD/CAM system library from a database supported by De-Tech Implant Technology. This was to assist in the accurate reproduction of details and design of a simulated implant abutment. Virtually, a digital crown was designed to be cemented on an abutment screw. A minimum occlusal thickness of 1mm and marginal fitting of 1.2

View Publication Preview PDF

(2)

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.

...Show More Authors

View Publication

Publication Date

Tue Jan 01 2008

Journal Name

Journal Of Engineering

USING FUZZY LOGIC CONTROLLER FOR A TWO- TANK LEVEL CONTROL SYSTEM

Omar

...Show More Authors

This paper presents a fuzzy logic controller for a two-tank level control system, which is a process with a dead time. The fuzzy controller is a proportional-integral (PI-like) fuzzy controller which is suitable for steady state behavior of the system. Transient behavior of the system was improved without the need for a derivative action by suitable change in the rule base of the controller. Simulation results showed the step response of the two-tank level control system when this controller was used to control this plant and the effect of the dead time on the response of the system.

Publication Date

Fri Mar 31 2017

Journal Name

Iraqi Journal Of Chemical And Petroleum Engineering

Effect of Nanoparticles and Surfactant on Phase Inversion of Two Phases

Phase inversion

surfactant

nanoparticles

oil-water flow

and pressure drop.

Nada M.

...Show More Authors

In the present study, a pressure drop technique was used to identify the phase inversion point of oil-in-water to water-in-oil flows through a horizontal pipe and to study the effect of additives (nanoparticles, cationic surfactant and blend nanoparticles-surfactant) on the critical dispersed volume fraction (phase inversion point). The measurements were carried for mixture velocity ranges from 0.8 m/sec to 2.3 m/sec. The results showed that at low mixture velocity 0.8 and 1 m/sec there is no effect of additives and velocity on phase inversion point, while at high mixture velocities the phase inversion point for nanoparticles and blend (nanoparticles/surfactant) systems was delayed (postponed) to a higher value of the dispers

View Publication Preview PDF

1 2 ... 78 79 80 81 ... 307 308