Synthesis and Characterization of New phenolic Schiff bases Derivatives Based on Terephthaladehyde

Eman M.  Mohammed

doi:10.21123/bsj.2013.10.3.699-711

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Publication Date

Sun Sep 01 2013

Journal Name

Baghdad Science Journal

Volume

10

Issue Number

3

DOI

10.21123/bsj.2013.10.3.699-711

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Synthesis and Characterization of New phenolic Schiff bases Derivatives Based on Terephthaladehyde

Terephthaladehyde

Fused epoxy

Phenolic Schiff bases

Eman M. Mohammed

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A variety of new phenolic Schiff bases derivatives have been synthesized starting from Terephthaladehyde compound, all proposed structures were supported by FTIR, 1H-NMR, 13C-NMR, Elemental analysis, some derivatives evaluated by Thermal analysis (TGA).

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Publication Date

Mon Jun 01 2026

Journal Name

Physical Chemistry Research

Investigating the Optoelectronic Properties of Hafnium-Doped CeO2 at Applied Hydrostatic Pressures: DFT+U Approach

Hussein A.

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Rare-earth metal oxides (REMOs) exhibit distinctive properties, among which cerium oxide (CeO2) displays numerous industrial, technological, and medical applications. However, the inclusion of hafnium (Hf) at the cerium (Ce) site to form the (Ce1-ₓHfₓO2) lattice system at a concentration of x = 0.25 would have an impact on enhancing the physical properties of the simulated configuration. Density functional theory (DFT) was used to perform the calculations, supported by the Hubbard correction factor (U). The generalized gradient approximation (GGA-PBE) was employed to analyze the electronic, structural, optical, and mechanical properties at hydrostatic pressures (P = 0, 25, 50, 75, and 100 GPa). The ground state geometry of the pristine

Publication Date

Sun Jan 25 2026

Journal Name

Mathematics

A Mathematical Analysis of Wind-Driven Bottom-Up Interactions in a Plant–Ungulate–Wolf Ecosystem

Ecosystem

wind flow

stability analysis

Ashraf Adnan

Mustafa

Shireen

Bipin

Mohammed Ahmed

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Understanding how abiotic influences affect organisms and their interactions within ecological communities has long been of interest to ecologists. The significance of this comprehension has increased given rapid human-induced climate change. Wind speed variation is one of the less researched effects of climate change, as wind speeds worldwide are generally falling. Although wind is a fairly universal component of the environment, relatively little work has been conducted to integrate our knowledge of how wind affects interactions between different species. In this study, the influence of wind on bottom-up trophic interactions in the plant–ungulate–wolf food chain has been investigated through mathematical modeling. Positivity and bound

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Publication Date

Sun Jan 01 2023

Journal Name

Ibero- American Journal Of Exercise And Sports Psychology

THE EFFECT OF SPECIAL EXERCISES USING TWO DESIGNED DEVICES IN DEVELOPING SOME DEFENSIVE HANDBALL SKILLS

hand ball

defensive skill

Huda Badwe Shabeeb

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(6)

Publication Date

Sat Feb 19 2022

Journal Name

Advances In Continuous And Discrete Models

Geometric properties of the meromorphic functions class through special functions associated with a linear operator

Meromorphic function

Convolution product

Hurwitz–Lerch zeta function

Differential first-order subordination

Firas Ghanim

Hiba Fawzi

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Abstract<p>According to the theory of regular geometric functions, the relevance of geometry to analysis is a critical feature. One of the significant tools to study operators is to utilize the convolution product. The dynamic techniques of convolution have attracted numerous complex analyses in current research. In this effort, an attempt is made by utilizing the said techniques to study a new linear complex operator connecting an incomplete beta function and a Hurwitz–Lerch zeta function of certain meromorphic functions. Furthermore, we employ a method based on the first-order differential subordination to derive new and better differential complex inequalities, namely differential subordinations.</p>

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Publication Date

Thu Nov 07 2024

Journal Name

Journal Of Ecological Engineering

Microwave assisted production of biodiesel using CaO nano-catalyst produced from mango fallen leaves extract

Atheer M.

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Publication Date

Sun Dec 01 2019

Journal Name

Civil Engineering Journal

Structural Behavior of High Strength Laced Reinforced Concrete One Way Slab Exposed to Fire Flame

Laced Reinforced Concrete

One-Way Slab

Fire Flame

High Temperature

SCC.

Anas Ibrahim

Shatha

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In this study, an experimental investigation had conducted for six high strength laced reinforced concrete one-way slabs to discover the behavior of laced structural members after being exposed to fire flame (high temperature). Self-compacted concrete (SCC) had used to achieve easy casting and high strength concrete. All the adopted specimens were identical in their compressive strength of ( , geometric layout 2000 750 150 mm and reinforcement specifics except those of lacing steel content, three ratios of laced steel reinforcement of (0.0021, 0.0040 and 0.0060) were adopted. Three specimens were fired with a steady state temperature of for two hours duration and then after the specimens were cooled suddenly by spraying water. The

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(6)

Publication Date

Fri Apr 01 2022

Journal Name

Heliyon

Stigma towards health care providers taking care of COVID-19 patients: A multi-country study

Abdulqadir J.

Glenn Ford D.

Sadeq

Hani

Hossam

Muna

Joseph U.

Ibtesam O.

Hawa

Nabil E.

Fade

I. Ketut

Aiman

Bilal

Malik

Marwa M.

Mostafa

Hayder

Mohammed B.

Sabah A

Shaymaa M.

Ayat J.

Mohammed A.

Nisha

Majid

Ananth

Mohamed A.

Ralph C.

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Publication Date

Wed Sep 24 2014

Journal Name

International Journal Of Environmental Science And Technology

Removal of copper ions from contaminated groundwater using waste foundry sand as permeable reactive barrier

A. A. H.

M. D.

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Publication Date

Tue Nov 09 2021

Journal Name

Abu Dhabi International Petroleum Exhibition & Conference

Numerical Simulation of Gas Lift Optimization Using Artificial Intelligence for a Middle Eastern Oil Field

evolutionary algorithm

gas lift

artificial intelligence

upstream oil & gas

machine learning

optimization problem

correlation

presented

allocation

reservoir pressure

Mohammed Ahmed

Omar F.

Dhifaf Jaafar

Haider Abdulmuhsin

Mustafa Alaulddin

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Abstract<p>Artificial lift techniques are a highly effective solution to aid the deterioration of the production especially for mature oil fields, gas lift is one of the oldest and most applied artificial lift methods especially for large oil fields, the gas that is required for injection is quite scarce and expensive resource, optimally allocating the injection rate in each well is a high importance task and not easily applicable. Conventional methods faced some major problems in solving this problem in a network with large number of wells, multi-constrains, multi-objectives, and limited amount of gas. This paper focuses on utilizing the Genetic Algorithm (GA) as a gas lift optimization algorit</p> ... Show More

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Publication Date

Sun Dec 01 2019

Journal Name

Journal Of Ecological Engineering

Biosorption of Heavy Metals from Synthetic Wastewater by Using Macro Algae Collected from Iraqi Marshlands

Safaa

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