Preferred Language
Articles
/
eRfxUJABVTCNdQwCXIYW
ZnO nanostructures as low concentration NO2 gas sensor and impact the temperature on sensing properties
...Show More Authors

Zinc oxide (ZnO) nanostructures were synthesized through the hydrothermal method at various conditions growth times (6,7 and 8 hrs.) and a growth temperature (70, 90, and 100 ºC). The prepared ZnO nanostructure samples were described using scanning electron microscopy (SEM) and X-ray diffractometer to distinguish their surface morphologies and crystal structures. The ZnO samples were confirmed to have the same crystal type, with different densities and dimensions (diameter and length). The obtained ZnO nanostructures were used to manufacture gas sensors for NO2 gas detection. Sensing characteristics for the fabricated sensor to NO2 gas were examined at different operating temperatures (180, 200, 220, and 240) ºC with a low gas concentration of 2 ppm. Sensor fabricated at (70 ◦C and 6 hrs.) appears higher gas sensitivity (6.319) with shorter response and recovery times of 41.4 s, and 23.4 s respectively at operating temperature 220 ◦C towards NO2 gas efficiently compared with other prepared samples. This study offers cost-effectiveness and a simple method for designing and fabricating gas sensors with good sensing characteristics, making it a favorable candidate for a NO2 gas monitor at low gas concentration.

Scopus Crossref
View Publication
Publication Date
Mon Apr 01 2019
Journal Name
Journal Of Engineering
Improving the Physical and Mechanical Properties of Fireclay Refractory Bricks by Added Bauxite
...Show More Authors

In this study, the investigation of Local natural Iraqi rocks kaolin with the addition of different proportions of bauxite and its effect on the physical and mechanical properties of the produced refractories was conducted. Kaolin/bauxite mixture was milled and classified into various size fractions, the kaolin (less than 105 μm) and the bauxite (less than 70μm). The specimens were mixed from kaolin and bauxite in ranges B1 (95+5)%, B2 (90+10)%, B3(85+15)%, and B4 (80+20)%  respectively. The green specimens were shaped by the semi-dry method using a hydraulic press and a molding pressure of 7 MPa with the addition of (9-12) %wt. of PVA ratio. After molding and drying, the specimens were fired at (1100, 1200 and 13

... Show More
View Publication Preview PDF
Crossref (2)
Crossref
Publication Date
Sun Feb 03 2019
Journal Name
Iraqi Journal Of Physics
Synthesis and study the optical properties of Ge20 Bix Se80-x thin films
...Show More Authors

View Publication Preview PDF
Crossref
Publication Date
Thu Mar 01 2018
Journal Name
Composite Structures
Computational homogenization of the elastic and thermal properties of superconducting composite MgB2 wire
...Show More Authors

View Publication
Scopus (42)
Crossref (40)
Scopus Clarivate Crossref
Publication Date
Sun Jun 01 2014
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
The impact of tax reform to increase the federal budget revenues
...Show More Authors
The percentage contribution of tax revenue in the federal budget is verysmall compared with the revenue earned from oil revenues, as the dependenceon oil revenues mainly to finance the state budget, have a negative impact onthe national economy as it makes it a one-sided and prisoner of on revenue, thatis the revenue derived from oil which is unstable revenue for continuouschanging in the price of oil The oil revenues reached to (85.4%) in 2009 withpercentage (93.11%) in 2013, The research objective is to study the possibilityof increasing tax revenues in order to raise the proportion of its contribution infinancing the federal budget through effective tax reforms, The mainconclusion of the research is
... Show More
View Publication Preview PDF
Publication Date
Fri Dec 01 2023
Journal Name
Political Sciences Journal
Impact of the Rising of China in Restructuring the International System
...Show More Authors

It is no secret to everyone that the Arab individual suffers from poor self-awareness and political awareness, which made the state and the importance of its existence and preserving its institutions not among his interests, which made researchers wonder about the possibility of strengthening it and the extent of its impact on the future of building the contemporary Arab state. So, the study attempts to addressing the issue of community awareness and its impact on building the state through a clear intellectual vision that blended what is social and political to define the concept of community awareness and highlight its importance and role as a basic pillar in shaping and building modern Arab countries in the Arab world and ways to enha

... Show More
View Publication Preview PDF
Crossref
Publication Date
Wed Dec 30 2015
Journal Name
College Of Islamic Sciences
The impact of the major doctrinal rules in Some Judicial Matters
...Show More Authors

Jurisprudential rules, a broad section to lower the legitimacy of the ruling on the developments of politics, which is increasing day by day, and developments of complex judicial issues, provided that the rule derived from the texts of the legitimate or verbal significance.
      And the introduction of jurisprudence rules in the provisions concerning the legitimate policy, the first to take from the provisions of the situation; because the rules of jurisprudence is a summary of the provisions reached by the scholars of the nation after study and scrutiny, which is qualified and largely to cover the need of the owners of public mandates.

View Publication Preview PDF
Publication Date
Tue Jul 01 2014
Journal Name
Political Sciences Journal
Political events in Iraq after 2003 and the impact of belonging and awareness in contemporary Iraqi composition
...Show More Authors

الاحداث السياسية في العراق بعد 2003 وأثر الانتماء والوعي في التشكيل العراقي المعاصر

View Publication Preview PDF
Crossref
Publication Date
Sun Sep 04 2011
Journal Name
Baghdad Science Journal
The Prediction of the Electromagnetic Properties and the ?(E2/M1) of 110-116Cd-Isotopes in IBM Model
...Show More Authors

The Nuclear structure of 110-116Cd isotopes was studied theoretically in the framework of the interacting boson model of IBM-l and IBM-2. The properties of the lowest mixed symmetry states such as the 1+, 2+ and 3+ levels produced by the IBM-2 model in the vibrational-limit U(5) of Cd - isotopes are studied in details. This analysis shows that the character of mixed symmetry of 2+ is shared between and states in 110-114Cd – isotopes, the large shar goes to s, while in isotope, the state is declared as a mixed symmetry state without sharing. This identification is confirmed by the percentage of F-spin contribution. The electromagnetic properties of E2 and Ml operators were investigated and the results were analyzed. Various

... Show More
View Publication Preview PDF
Crossref
Publication Date
Wed Mar 10 2021
Journal Name
Baghdad Science Journal
The impact of the lack of certain vitamins and minerals intake rate of hair loss in pregnant and breastfeeding women
...Show More Authors

The research aims to identify the rates of hair loss during pregnancy and lactation and its relation to the rates get some elements motivator urged through the results of the continued failure to meet the need of daily assessments of these elements, which led to the continuation of Hair Loss

View Publication Preview PDF
Publication Date
Sat Jan 01 2022
Journal Name
Journal Of The Mechanical Behavior Of Materials
Numerical simulation to the effect of applying rationing system on the stability of the Earth canal: Birmana canal in Iraq as a case study
...Show More Authors
Abstract<p>Extreme conditions will cause the water level of high fill canal segment to change suddenly, which will affect the velocity and pore pressure of the slope. A 9 km irrigation earth canal in the city of Alsyahy, 15 km away from Al-Hilla city, and branching off from the left side of Shatt Al-Hilla at 57 km, was studied. The aim of this work is to study and analyze the effect of rationing system on the Birmana earthen canal during rapid drawdown case. Finite element modeling with Geo-Studio software was used in the present study to analyze the combined seepage and slope stability for three cycles. The resulting minimum safety factor obtained from the analysis using the saturated and</p> ... Show More
View Publication
Scopus (5)
Crossref (4)
Scopus Clarivate Crossref