Synthesis of Novel Heterocyclic Compounds via Schiff bases

Huda A. Hassan; Ruwaidah S. Saeed; Dheefaf F Hassan

Details

Publication Date

Tue Dec 16 2014

Journal Name

Iraqi National Journal Of Chemistry

Volume

56

Choose Citation Style

Statistics

View publication

14

Statistics

Synthesis of Novel Heterocyclic Compounds via Schiff bases

Azetidinone

Tetrazole

Thiazolidinone

1

3-Oxazepine .

Huda A. Hassan

Ruwaidah S. Saeed

Dheefaf F Hassan

...Show More Authors

In the present study a series of some four-,five-and seven-membered heterocyclic compounds have been synthesized by the reaetion of Schiff bases (1a,b) with chloroacetyl chloride, sodium azide, thioglycolic acid or various anhydrides to give azetidinone (2a,b), tetrazole (3a,b), thiazolidinone (4a,b) and 1,3-oxazepine derivatives (5-8a,b) respectively. Schiff bases (1a,b)were prepared from the reaction of p-toluidine with aromatic aldehydes. All synthesized compounds were characterized by physical properties and spectral data.

Preview PDF

Quick Preview PDF

Publication Date

Sun Jun 30 2019

Journal Name

Journal Of Engineering

Numerical Study of Fluid Flow and Heat Transfer Characteristics in Solid and Perforated Finned Heat Sinks Utilizing a Piezoelectric Fan

piezoelectric fan

heat transfer

axial perforated heat sink

laterals perforated heat sink.

Ayser Shamil

Mohammed A.

...Show More Authors

Numerical study is adapted to combine between piezoelectric fan as a turbulent air flow generator and perforated finned heat sinks. A single piezoelectric fan with different tip amplitudes placed eccentrically at the duct entrance. The problem of solid and perforated finned heat sinks is solved and analyzed numerically by using Ansys 17.2 fluent, and solving three dimensional energy and Navier–Stokes equations that set with RNG based k−ε scalable wall function turbulent model. Finite volume algorithm is used to solve both phases of solid and fluid. Calculations are done for three values of piezoelectric fan amplitudes 25 mm, 30 mm, and 40 mm, respectively. Results of this numerical study are compared with previous b

View Publication Preview PDF

(1)

Publication Date

Fri Jul 29 2022

Journal Name

Journal For Vascular Ultrasound

A Comparative Study of the Right and Left Carotid Arteries in Relation to Age for Patients With Diabetes and Hypertension

Introduction: Age

hypertension

and diabetes can cause significant alterations in arterial structure and function

including changes in lumen diameter (LD)

intimal-medial thickness (IMT)

flow velocities

and arterial compliance. These are also considered risk markers of atherosclerosis and cerebrovascular disease. A difference between right and left carotid artery blood flow and IMT has been reported by some researchers

and a difference in the incidence of nonlacunar stroke has been reported between the right and left brain hemispheres. The aim of this study was to determine whether there are differences between the right and left common carotid arteries and internal carotid arteries in patients with hypertension and diabetes for 2 age groups. Methods: We studied 250 patients with both diabetes and hypertension. Patients were divided into 2 age groups with the old age group being 56 to 75 years and the young age group 35 to 55 years. The bilateral common carotid and internal carotid arteries were evaluated with B-mode ultrasound and Doppler examinations. The LD and IMT were measured for both common carotid arteries

and spectral waveform parameters and indices were recorded for both internal carotid arteries. Results: The difference in LD between the left and right common carotid arteries for the old age group was 11.64% and for the young age group was 6.42%

with significant P values of <.05 for both age groups. The difference in IMT between the left and right common carotid arteries was 18.27% in the old age group compared with 15.38% in the young age group

with significant P values of <.05. There was a difference in peak systolic velocity between the left and right internal carotid arteries of 4.85% in the old age group which was not significant

compared with 14.28% in the young age group with a significant P value <.05

whereas the difference in end-diastolic velocity between the left and right internal carotid arteries was not significant for both age groups. Differences between the right and left internal carotid arteries for resistive index

pulsatility index

and pressure gradient were significant only in the young age group. Conclusion: We found significant differences between the right and left common carotid and internal carotid arteries in patients with diabetes and hypertension which were more prominent in the young age group. Values for common carotid IMT and LD were significantly higher in the left common carotid artery versus the right common carotid artery in both age groups. Differences between the 2 carotid sides may be attributed to anatomic variations in the common carotid artery origins which lead to differences in stress between the 2 sides

Ahmed Abduljabar

Samar I.

Anmar Z

...Show More Authors

Introduction:

Age, hypertension, and diabetes can cause significant alterations in arterial structure and function, including changes in lumen diameter (LD), intimal-medial thickness (IMT), flow velocities, and arterial compliance. These are also considered risk markers of atherosclerosis and cerebrovascular disease. A difference between right and left carotid artery blood flow and IMT has been reported by some researchers, and a difference in the incidence of nonlacunar stroke has been reported between the right and left brain hemispheres. The aim of this study was to determine whether there are differences between the right and left common carotid arteries and internal carotid arteries in patient

View Publication

(7)

(5)

Publication Date

Tue Jun 20 2023

Journal Name

Baghdad Science Journal

Numerical Solutions for the Nonlinear PDEs of Fractional Order by Using a New Double Integral Transform with Variational Iteration Method

Mohammed G. S.

Rand Muhaned

Wurood R. Abd

...Show More Authors

This paper considers a new Double Integral transform called Double Sumudu-Elzaki transform DSET. The combining of the DSET with a semi-analytical method, namely the variational iteration method DSETVIM, to arrive numerical solution of nonlinear PDEs of Fractional Order derivatives. The proposed dual method property decreases the number of calculations required, so combining these two methods leads to calculating the solution's speed. The suggested technique is tested on four problems. The results demonstrated that solving these types of equations using the DSETVIM was more advantageous and efficient

View Publication

(8)

(4)

Publication Date

Tue Mar 04 2008

Journal Name

Journal Of Baghdad College Of Dentistry

Twelve months clinical comparison between modified Widman flap with or without enamel matrix derivative for the treatment of infrabony defects

saif

...Show More Authors

Publication Date

Sat Dec 15 2018

Journal Name

Journal Of Baghdad College Of Dentistry

The relation of maxillary root apices and the maxillary sinus floor among patients with different skeletal patterns in Iraqi samples

Karrar H

Iman I

...Show More Authors

Background: Understanding the morphological characteristics between the floor of the maxillary sinus and the tips of the maxillary posterior roots is crucial in orthodontics involving diagnosis and treatment planning. The aim of this study was to evaluate the distances from the maxillary posterior root apices to the inferior wall of the maxillary sinus, thickness and density of maxillary sinus floor using cone-beam computed tomography images and the relationships between roots and maxillary sinus according to gonial angle and skeletal pattern. Materials and methods: Three-dimensional images of each root were checked, and the distances were measured along the true vertical axis from the apex of the root to the sinus floor, and the thickne

View Publication Preview PDF

Publication Date

Mon Oct 01 2018

Journal Name

International Journal Of Biosciences

Detection of Escherichia coli O157 H7 isolated from infected dogs with urinary tract infections using real time - polymerase chain reaction

Mohammed A.K.

...Show More Authors

Publication Date

Tue Jul 01 2014

Journal Name

Political Sciences Journal

Article International attitudes to change in the Arab countries in the positions of analytical Read (United States, European Union, Russia)

أ.م.د.فايق حسن

...Show More Authors

المواقف افي الدول العربية قراءة تحليلية في مواقف لدولية من التغيير (الولايات المتحدة - الاتحاد الاوروبي - روسيا)

View Publication Preview PDF

Publication Date

Mon Dec 31 2018

Journal Name

Journal Of The Faculty Of Medicine Baghdad

Detection of Thiopurine S-Methyltransferase (TPMT) Polymorphisms TPMT*3A, TPMT*3B and TPMT*3C in Children with Acute Lymphoblastic Leukemia

Nawar S

...Show More Authors

View Publication Preview PDF

Publication Date

Sun Jul 01 2018

Journal Name

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

GENOTYPE VERSUS PHENOTYPE TO DETERMINE THE DEFINITIVE IDENTIFICATION OF THE GENERA CHLORELLA BEIJERINCK, 1890 (CHLORELLACEAE) AND COELASTRELLA CHODAT, 1922 (SCENDESMACEAE)

Coccoid green algae

Coelastrella

Genotype

New record

Phylogenetic tree.

Ibrahim J.

Ghusoon A.

Ali M.

...Show More Authors

Conventional identification of three coccoid green algae isolates was attempted to characterize the studied algae morphologically under compound microscope, which demonstrated confusional phenomenal convergence; all were classified microscopically as the green alga Chlorella vulgaris Beijerinck, 1890.

Phylogenetic studies were conducted to settle the argument about the phenotype by studying the genotype. Genotype the promising field in advance classification by using 18S rRNA and compared to GenBank database using to search the related sequences. The determined sequences showed high a similarity to the strains registered in GenBank.

&

View Publication Preview PDF

(11)

(4)

Publication Date

Sun Feb 10 2019

Journal Name

Iraqi National Journal Of Nursing Specialties

Effectiveness of Structured Educational Program on Nurses’ Practices Concerning Therapeutic Communication at Cardiac Care Units in Holy Karbala Governorate Hospitals

Effectiveness

Nurses' Practices

Educational Program

Therapeutic Communication

Cardiac Care Units

hussam

Hakemia

...Show More Authors

Abstract
Objectives: This study aimed to evaluate the effectiveness of an educational program on nurses' practices concerning therapeutic communication.
Methodology: A quasi experimental design was carried out at Karbala Center for Cardiac Diseases and Surgery, Imam Hussein Medical City and Al-Handia General Hospital for period 10th June 2017 to the 15th of August 2018.
The program and instruments were constructed and developed by the researcher to measure the purpose of the study. Purposive sample comprised of (57) nurses were divided into two groups, study and control groups. The questionnaire consisted from two parts, first part is related to nurses' demographic characteristics and second part which include practices checkl

View Publication Preview PDF

1 2 ... 2370 2371 2372 2373 ... 2493 2494