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Publication Date

Sun Feb 05 2017

Journal Name

Iraqi Journal Of Market Research And Consumer Protection

Volume

9

Issue Number

1

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STUDY OF OPTIMUM CONDITIONS FOR REMOVAL OF HEAVY METAL ELEMENTS BY LOCALLY ISOLATED FUNGI Aspergillus niger.: STUDY OF OPTIMUM CONDITIONS FOR REMOVAL OF HEAVY METAL ELEMENTS BY LOCALLY ISOLATED FUNGI Aspergillus niger.

Aspergillus niger

Heavy metal elements

Environmental pollution

Biosorbtion.

Ahmed S.

Dr. Elham I.

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The best optimum temperature for the isolate was 30○C while the pH for the maximum mineral removal was 6. The best primary mineral removal was 100mg/L, while the maximum removal for all minerals was obtained after 8 hrs, and the maximum removal efficiency was obtained after 24 hrs. The results have proved that the best aeration for maximum removal was obtained at rotation speed of 150 rpm/ minute. Inoculums of 5ml/ 100ml which contained 106 cell/ ml showed maximum removal for the isolate.

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Publication Date

Tue Feb 28 2023

Journal Name

Iraqi Journal Of Science

CdO: SnO2 Composite UV-Assisted Room Temperature Ozone Sensor

Metal oxide

Cd–Sn oxide

gas sensor

UV-assisted sensor

Ozone sensor

Mohammed O.

Mohammed A.

Abed A.

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Cadmium-tin oxide (CSO) thin films were fabricated by spray pyrolysis method at different substrate temperatures (T_s). The results showed a significant effect of T_s on the surface morphology and the electrical properties, which in turn has a significant effect on sensor gas sensitivity. The sample prepared at 400 °C appeared in the form of a donut shape, which has the best ozone sensitivity. No ozone sensitivity appeared in-dark, while showed good sensitivity when illuminated with UV at room temperature (RT). The study showed that the photon exposure method can substitute for the conventional method of sensors heating.

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Publication Date

Mon Aug 01 2022

Journal Name

Inorganic Chemistry Communications

Assembling [email protected] nanocomposites with an enhanced photocatalytic activity

Keywords: MV dye photodegradation Metal sulfide semiconductors [email protected] Nanocomposite Visible-light

Entisar M.

Widyan N.

Saad H.

Ahmed S.

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Herein, an efficient inorganic/organic hybrid photocatalyst composed of zeolitic imidazolate framework (ZIF-67) decorated with Cd0.5Zn0.5S solid solution semiconductor was constructed. The properties of prepared ZIF- [email protected] nanocomposite and its components (ZIF-67 and Cd0.5Zn0.5S) were investigated using XRD, FESEM, EDX, TEM, DRS and BET methods. The photocatalytic activity of fabricated [email protected] nanocomposite were measured toward removal of methyl violet (MV) dye as a simulated organic contaminant. Under visible-light and specific conditions (photocatalyst dose 1 g/l, MV dye 10 mg/l, unmodified solution pH 6.7 and reaction time 60 min.), the acquired [email protected] photocatalyst showed advanced photocatalytic activity

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Publication Date

Tue Feb 28 2023

Journal Name

Iraqi Journal Of Science

Photonic Crystal Fiber Pollution Sensor based on Surface Plasmon Resonance

Photonic crystal fiber sensor

Pollution sensor

Optical fiber sensor based surface plasmon resonance

Surface plasmon resonance

Fatima Fadhil

Soudad S.

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In this work, a pollution-sensitive Photonic Crystal Fiber (PCF) based on Surface Plasmon Resonance (SPR) technology is designed and implemented for sensing refractive indices and concentrations of polluted water . The overall construction of the sensor is achieved by splicing short lengths of PCF (ESM-12) solid core on one side with traditional multimode fiber (MMF) and depositing a gold nanofilm of 50nm thickness on the end of the PCF sensor. The PCF- SPR experiment was carried out with various samples of polluted water including(distilled water, draining water, dirty pond water, chemical water, salty water and oiled water). The location of the resonant wavelength peaks is seen to move to longer wavelengths (red shift)

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(9)

Publication Date

Wed Sep 08 2021

Journal Name

Journal Of Accounting And Financial Studies ( Jafs )

Strategic tax planning and its impact on reducing tax evasion

Strategic Planning

characteristics of strategic planning

elements of strategic planning

taxes

tax definition

tax characteristics

Basic rules for taxation

types of taxes

Types of tax evasion

Reasons for tax evasion

م.م.الحارث محمد

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Taxes are an essential axis in the economy as the most effective and effective economic tool in any country (economy). Expanding the scope of taxation without adequate study has produced a dangerous result with a negative impact that is almost apparent, namely (tax evasion), which stands as a barrier preventing the state from reaching Therefore, the research sought to study strategic tax planning and its importance in reducing tax evasion, and the research aims from that to prove the importance of adopting strategic planning in the field of taxes according to modern and effective scientific foundations to reduce tax evasion to enhance the achievement of tax evasion. The financing objective is in addition to the other objectives,

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