Preferred Language
Articles
/
L-b5hZwBmraWrQ4dN0v_
Fabrication and characterization of 3D-printed polymeric‐based scaffold coated with bioceramic and naringin for a potential use in dental pulp regeneration (in vitro study)
...Show More Authors

3D‐printed scaffolds loaded with healing directed agents could be employed for better treatment outcome in regenerative dentistry. The aim of this study was to fabricate and characterize simple 3D‐printed poly lactic acid (PLA) scaffolds coated with nanoHydroxyapatite (nHA), Naringin (NAR), or their combination, and testing their morphological, chemical, mechanical, antibacterial, biocompatible and bioactive properties. Methodology: Two variants pore sizes, 300 and 700 μm, of 3D‐printed PLA disc scaffolds measuring (10 × 1 mm) were fabricated. These scaffolds were dip‐coated with nHA, NAR, or both (nHA/NAR). Field emission scanning electron microscopy (FeSEM), energy‐dispersive X‐ray spectroscopy (EDX), Fourier transforms infrared (FTIR), compressive and flexural strength testing was employed for optimizing pore size. Then, antibacterial activity against isolated Streptococcus mutans and Enterococcus faecalis, and cytotoxicity against normal human fibroblast were assessed. Additionally, appetite formation on scaffold surfaces was assessed after storage in simulated body fluid (SBF) for 14 days by further using FeSEM, EDX and XRD. Results: FeSEM showed uniform structure for 3D‐printed scaffolds in both pore size designs, and a consistent surface coating with nHA and NAR, which were further confirmed by EDX and FTIR. However, mechanical testing revealed statistical significant higher compressive and flexural strengths for 300 μm pore size scaffolds. Statistical significant antibacterial activities (p < .05) were also found with PLA/NAR, and PLA/nHA /NAR scaffolds in comparison with neat. The MTT assay revealed biocompatibility of PLA, nHA and NAR, with the combinations of the latter two working synergistically. Lastly, the formation of a calcium‐phosphate appetite layer was recognized on the surface of PLA/nHA, PLA/nHA/NAR scaffold after being stored in SBF. Conclusions 3D‐printed, 300 μm pore size, PLA scaffold coated with a combination of nHA and NAR showed the best surface characteristics and improved mechanical, antibacterial and biocompatible properties for further investigation in regenerative studies.

View Publication
Publication Date
Tue Jun 15 2021
Journal Name
Al-academy
Rhetorical connections to the head-covers of Mesopotamian gods: جهينة حامد حساني
...Show More Authors

The Rafidian artist discussed the headdresses of his idols with a varied scholarly momentum, so each idol had its own cover as this door of diversity contributed to the enrichment of Rafidian thought and full knowledge of their ideas and beliefs consistent with their multiple symbolic connections such as architecture, for example. The previous one, if not its entirety.
A research such as this (the discursive connections to the head-covers of the deities of the Mesopotamian civilization) aims to clarify the confusion that occurs through four chapters: The first chapter included: the research problem, the importance of research and the need for it, the objectives of the research, the temporal, spatial and objective limits of research, a

... Show More
View Publication Preview PDF
Crossref
Publication Date
Thu May 18 2023
Journal Name
College Of Islamic Sciences
The jurisprudential approach Imam Al-Qurtubi through his interpretation Verses of rulings
...Show More Authors

There are great figures in our nation, who are famous for their encyclopedia in their sciences, and their fame spreads across the horizons for what they presented to their religion and nation.
So they became torches of guidance, advocates of goodness, and treasuries of knowledge until God inherits the earth and those on it.
Among these imams is Imam al-Qurtubi, who died in the year (671 AH), after whom he left a great legacy of valuable books, including this one, which is the subject of my research, his valuable interpretation (Al-Jami’ Li Ahkam Al-Qur’an). Taking from him and his approach in interpreting the verses of judgment, following the method of extrapolation, investigation and deduction to know his style, which he used

... Show More
View Publication Preview PDF
Publication Date
Mon Oct 01 2018
Journal Name
Civil Engineering Journal
Developing Water Quality Index to Assess the Quality of the Drinling Water
...Show More Authors

In the present study, an attempt has been to develop a new water quality index (WQI) method that depends on the Iraqi specifications for drinking water (IQS 417, 2009) to assess the validity of the Euphrates River for drinking by classifying the quality of the river water at different stations along its entire reach inside the Iraqi lands. The proposed classifications by this method are: Excellent, Good, Acceptable, Poor, and Very poor. Eight water quality parameters have been selected to represent the quality of the river water these are: Ion Hydrogen Concentration (pH), Calcium (Ca), Magnesium (Mg), Sodium (Na), Chloride (Cl), Sulphate (SO_4), Nitrate (NO_3), and Total Dissolved Solids (TDS). The variation of the water quality parameters

... Show More
Publication Date
Sat Aug 10 2019
Journal Name
Engineering, Technology &amp; Applied Science Research
Performance of Segmental Post-Τensioned Concrete Beams Exposed to High Fire Temperature
...Show More Authors

The present study illustrates observations, record accurate description and discussion about the behavior of twelve tested, simply supported, precast, prestressed, segmental, concrete beams with different segment numbers exposed to high fire temperatures of 300°C, 500°C, and 700°C. The test program included thermal tests by using a furnace manufactured for this purpose to expose to high burning temperature (fire flame) nine beams which were loaded with sustaining dead load throughout the burning process. The beams were divided into three groups depending on the precast segments number. All had an identical total length of 3150mm but each had different segment number (9, 7, and 5 segments), in other words, different segment length

... Show More
View Publication Preview PDF
Crossref (6)
Crossref
Publication Date
Mon Jan 01 2018
Journal Name
International Journal Of Surgery Open
Does preoperative magnetic resonant cholangiopancreatography (MRCP), improve the safety of laparoscopic cholecystectomy?
...Show More Authors
<bold>ABSTRACT</bold> <sec> <title>Background:

Magnetic resonance cholangiopancreatography (MRCP) is a non-invasive imaging test with excellent overall sensitivity and specificity for demonstrating the level and the presence of a biliary obstruction. MRCP has emerged as an accurate, diagnostic modality for investigating the biliary and pancreatic duct. In some cases, it has been recommended that preoperative MRCP is a good choice for the detection of CBD stones.

Aim:

The aim of the s

... Show More
View Publication
Scopus (3)
Crossref (4)
Scopus Crossref
Publication Date
Mon Mar 05 1990
Journal Name
وقائع المؤتمر العلمي الخامس لمجلس البحث العلمي في المجلة العراقية
INACTIVATION OF SELECTED ANTIBIOTICS AGAINST ESCHERICHIA COLI BY VAMIN NUTRITIO- NAL SUPPLEMENTATION
...Show More Authors

Posible interference of vamin with the activity of several antibiotics against E. coli was evaluated in vitro. In MBS- glucose medium, significant growth delay was induced by 8 ug/ml of terramycin (oxytetracycline- polymyxin B) and bactrim (trimethoprim-sulphamethoxazole), and by 16 ug/ml of refocin, lincomycin, and chloramphenicol. Rapid growth inhibition was induced by 32 ug/ml of all an- tibiotic tested separately. Significant inactivation of up to 64 ug/ml of licomycin and bactrim was in- duced by the addition of vamin at a concentration of 1:20 v/v of the medium. This effect was found to be due to the presence of specific amino acids in vamin. Among them is valine, leucine, isoleucine tyrosine, tryptophan, phenylalanine, cysteine, meth

... Show More
Publication Date
Fri Nov 01 2019
Journal Name
Practice Periodical On Structural Design And Construction
Reducing Damages to Underground Infrastructure: Performance Evaluation of One-Call Notification Program
...Show More Authors

View Publication
Scopus (12)
Crossref (9)
Scopus Clarivate Crossref
Publication Date
Tue Dec 01 2020
Journal Name
Iraqi Journal Of Physics
Enhancement of functionalized carbon nanotubes gas sensor by adding metal oxide nanoparticles
...Show More Authors

Functionalized-multi wall carbon nanotubes (F-MWCNTs) and functionalized-single wall carbon nanotubes (F-SWCNTs) were well enhanced using CoO Nanoparticles. The sensor device consisted of a film of sensitive material (F-MWCNTs/CoONPs) and (F-SWCNTs/CoO NPs) deposited by drop- casting on an n-type porous silicon substrate. The two sensors perform high sensitivity to NO2 gas at room temperatures. The analysis indicated that the (F-MWCNTs/CoONPs) have a better performance than (F-SWCNTs/CoONPs). The F-SWCNTs/CoONPs gas sensor shows high sensitivity (19.1 %) at RT with response time 17 sec, while F-MWCNTs/CoONPs gas sensor show better sensitivity (39 %) at RT with response time 13 sec. The device shows a very reproducible sensor p

... Show More
View Publication Preview PDF
Crossref (6)
Crossref
Publication Date
Tue Aug 01 2023
Journal Name
Journal Of Engineering
Flexural Behavior of Reinforced Rubberized Reactive Powder Concrete Beams under Repeated Loads
...Show More Authors

Non-biodegradability of rubber tires contributes to pollution and fire hazards in the natural environment. In this study, the flexural behavior of the Rubberized Reactive Powder Concrete (RRPC) beams that contained various proportions and sizes of scrap tire rubber was investigated and compared to the flexural behavior of the regular RPC. Fresh properties, hardened properties, load-deflection relation, first crack load, ultimate load, and crack width are studied and analyzed. Mixes were made using micro steel fiber of the straight type, and they had an aspect ratio of 65. Thirteen beams were tested under two loading points (Repeated loading) with small-scale beams (1100 mm, 150 mm, 100 mm) size.

The fine aggregate

... Show More
View Publication Preview PDF
Crossref (5)
Crossref
Publication Date
Sat Jul 03 2021
Journal Name
Journal Of Electronic Materials
Electrochemical Deposition of Cu-Nanoparticle-Loaded CdSe/TiO2 Nanotube Nanostructure as Photoelectrode
...Show More Authors

View Publication
Scopus (10)
Crossref (6)
Scopus Crossref