Preferred Language
Articles
/
xxaCX4oBVTCNdQwCpJxf
Impact of nano-cellulose fiber addition on physico-mechanical properties of room temperature vulcanized maxillofacial silicone material
...Show More Authors

Objectives: Maxillofacial silicone is used to restore abnormalities due to congenital or acquired causes. However, the quality of silicone is far from ideal. This study was aimed at assessing the influence of the addition of cellulose nanofibers (CNFs; several nanometers wide and 2-5 micro m long) on the physical and mechanical characteristics of maxillofacial silicone elastomers. Methods: Two CNF weight percentages (0.5% and 1%) were tested, and 180 specimens were divided into one control and two experimental groups. Each group was subdivided into six subgroups. In each subgroup, ten specimens subjected to each of the following tests: tearing strength, Shore-A hardness, tensile strength, elongation percentage, surface roughness, and color stability. The samples were additionally analyzed with Fourier transform infrared spectroscopy (FTIR) and field emission scanning electronic microscopy (FESEM). Results: The 0.5% CNF group, compared with the control group, exhibited highly significantly greater tearing strength, elongation percentage, hardness Shore-A, and surface roughness, and substantially greater tensile strength. However, color stability did not significantly differ between groups. The 1% CNF group showed significantly greater Shore-A hardness, tear strength, color stability, and surface roughness, and insignificantly lower tensile strength and percentage elongating values, than the control group. FESEM imaging revealed good CNF dispersion. The FTIR spectra indicated that CNFs interacted with silicon through surface functional hydroxyl groups. Conclusion: Addition of 0.5 wt. % CNF to silicone elastomers increased the material’s mechanical tensile strength, tear strength, elongation percentage, and hardness as long as it stayed within the acceptable range for clinical use. Surface roughness increased in direct proportion to the amount of nanofibers added. Moreover, addition of 0.5 wt. % CNF to silicone polymers had insignificant effects on color stability.

Scopus Clarivate Crossref
View Publication
Publication Date
Sat Jul 19 2025
Journal Name
Al–bahith Al–a'alami
ADDRESSING THE GOALS OF SUSTAINABLE DEVELOPMENT IN THE ARAB PRESS:: (An analytical study in the newspapers (Al-Sabah Iraqi newspaper, Algerian ech-chaab Newspaper, and UAE Al-Ittihad Newspaper) (A Research Drawn from Master Thesis)
...Show More Authors

The problem of this research is:

What are the sustainable development goals that received the priority in the press addressing of the newspapers under study?

What are the journalistic arts adopted by these newspapers in addressing the sustainable development goals?

What are the journalistic sources that Arab newspapers depended on when addressing the sustainable development goals?

What are the geographic range the Arab newspapers adopted in addressing the sustainable development goals? The research is categorized into descriptive research, adopting the survey method, and using the content analysis method.

The sample of research was determined by the preparation of the Arabic newspapers (Al-

... Show More
View Publication Preview PDF
Crossref
Publication Date
Fri Mar 31 2017
Journal Name
Al-khwarizmi Engineering Journal
Design an Integral Sliding Mode Controller for a Nonlinear System
...Show More Authors

The goal of this paper is to design a robust controller for controlling a pendulum
system. The control of nonlinear systems is a common problem that is facing the researchers in control systems design. The Sliding Mode Controller (SMC) is the best solution for controlling a nonlinear system. The classical SMC consists from two phases. The first phase is the reaching phase and the second is the sliding phase. The SMC suffers from the chattering phenomenon which is considered as a severe problem and undesirable property. It is a zigzag motion along the switching surface. In this paper, the chattering is reduced by using a saturation function instead of sign function. In spite of SMC is a good method for controlling a nonlinear system b

... Show More
View Publication Preview PDF
Crossref (8)
Crossref
Publication Date
Sat Apr 01 2017
Journal Name
Al–bahith Al–a'alami
Palestinian Media Elite Attitudes towards Recording Cinemas in Addressing the Internal Situations: A Field Study
...Show More Authors

The follower of the history of cinema in the world notes that cinema started recording one and these films are varied in their subjects, while the life of man was the material of these films to be in a creative artistic style.
If the Palestinian films produced by Palestinian directors do not have an impact on the local, Arab and international levels, this is due to the weakness in several technical fields or with the intention to make them bad or negligence of those who produce these films.
This research deals with the role played by Palestinian films in dealing with the internal situation from the point of view of the Palestinian media elite in terms of their exposure to films and the motives of this exposure and the expectation

... Show More
View Publication Preview PDF
Crossref
Publication Date
Wed Sep 01 2021
Journal Name
Baghdad Science Journal
A Posteriori L_∞ (L_2 )+L_2 (H^1 )–Error Bounds in Discontinuous Galerkin Methods For Semidiscrete Semilinear Parabolic Interface Problems
...Show More Authors

The aim of this paper is to derive a posteriori error estimates for semilinear parabolic interface problems. More specifically, optimal order a posteriori error analysis in the - norm for semidiscrete semilinear parabolic interface problems is derived by using elliptic reconstruction technique introduced by Makridakis and Nochetto in (2003). A key idea for this technique is the use of error estimators derived for elliptic interface problems to obtain parabolic estimators that are of optimal order in space and time.

View Publication Preview PDF
Scopus (11)
Crossref (9)
Scopus Clarivate Crossref
Publication Date
Fri Jul 04 2025
Journal Name
Bylon Center For Humanities Studies
Amos Oz And His Status In Modern Hebrew Literature (Review Article)
...Show More Authors

This literary review addresses the status of the most famous Israeli writer, Amos Oz, through the analysis of relevant articles that highlight various aspects of his literary and political orientations, reflecting his ideological and social background. Oz's literature encompasses a mix of political orientations that many critics view as extreme, while others see them as moderate stances indicative of the author's awareness. And these are what strengthened his literary status in modern Hebrew literature.These trends emphasized the contribution of Oz's works to shaping Israeli cultural consciousness and reflect the challenges facing identity in multiple contexts. He was an advocate for equality between Palestinians and Israelis and

... Show More
View Publication
Publication Date
Sat Jul 19 2025
Journal Name
المستودع الرقمي للاطاريح
نجاح منظمات الاعمال على وفق التوجه الريادي لتكنولوجيا المعلومات بحث ميداني لعينة من المصارف العراقية الخاصة == The Success of Business Organizations According To The Entrepreneurial Orientation For Information Technology An Field Research At Iraqi Private Banks
...Show More Authors

المستودع الرقمي العراقي. مركز المعلومات الرقمية التابع لمكتبة العتبة العباسية المقدسة

View Publication
Publication Date
Sat Oct 01 2022
Journal Name
Al–bahith Al–a'alami
LOCAL NEWS SOURCES IN THE IRAQI NEWSPAPERS: Local news sources in the Iraqi newspapers (An analytical study of local news sources In the newspaper Al-Zaman for the period from 1/6/2006 to 06/30/2006)
...Show More Authors

Local news is an important topic of the press because of its importance to readers. It touches their daily life in one way or another, which makes them interested in and followers of them. Hence the importance of local news, as it interests a wide segment of readers.
There are many sources of newspapers for obtaining local news, as these sources are distributed to the newspaper's own sources and external sources.

Self-sources are the newspaper's own sources, through which it is possible to obtain this news, such as the representatives of the newspaper and its correspondents and the journalists working in it. This is the example in this way.
The external sources are distributed to local and international news agencies and sa

... Show More
View Publication Preview PDF
Crossref
Publication Date
Thu Nov 19 2020
Journal Name
Indonesian Journal Of Chemistry
Determination of Eugenol in Personal-Care Products by Dispersive Liquid-Liquid Microextraction Followed by Spectrophotometry Using <i>p</i>-Amino-<i>N,N</i>-dimethylaniline as a Derivatizing Agent
...Show More Authors

Two simple methods for the determination of eugenol were developed. The first depends on the oxidative coupling of eugenol with p-amino-N,N-dimethylaniline (PADA) in the presence of K3[Fe(CN)6]. A linear regression calibration plot for eugenol was constructed at 600 nm, within a concentration range of 0.25-2.50 μg.mL–1 and a correlation coefficient (r) value of 0.9988. The limits of detection (LOD) and quantitation (LOQ) were 0.086 and 0.284 μg.mL–1, respectively. The second method is based on the dispersive liquid-liquid microextraction of the derivatized oxidative coupling product of eugenol with PADA. Under the optimized extraction procedure, the extracted colored product was determined spectrophotometrically at 618 nm. A l

... Show More
View Publication Preview PDF
Scopus (5)
Crossref (6)
Scopus Clarivate Crossref
Publication Date
Sun Jun 05 2016
Journal Name
Baghdad Science Journal
Kinetic Model for Solute Diffusion in Liquid Membrane Systems
...Show More Authors

In this study, a mathematical model for the kinetics of solute transport in liquid membrane systems (LMSs) has been formulated. This model merged the mechanisms of consecutive and reversible processes with a “semi-derived” diffusion expression, resulting in equations that describe solute concentrations in the three sections (donor, acceptor and membrane). These equations have been refined into linear forms, which are satisfying in the special conditions for simplification obtaining the important kinetic constants of the process experimentally.

View Publication Preview PDF
Crossref
Publication Date
Tue Feb 01 2022
Journal Name
بحوث
إيجاد الرجولة في "الحرب العظمى": دراسة تحليلية لرواية (طريق طويل جداً) للکاتب سيباستيان باري
...Show More Authors

Finding Masculinity in the "Great War": An Analytical Study of A Long Long Way by Sebastian Barry Abstract This paper intends to show the relation between war and masculinity, through drawing a sketch of the masculine identity of the soldiers during the First World War (also known as the Great War). It studies the association between “ideal manhood” and wartime duties. The paper travels though the experience of Willie Dunne, a young Irish soldier in A Long Long Way (2005) by the Irish writer, Sebastian Barry. Through the paper, the researcher traces the social and familial pressures that lead Willie to enlist in the army, and to experience the atrocities of the First World War in order to search for his masculinity. Raywne Connell's co

... Show More
View Publication
Crossref