Preferred Language
Articles
/
jcolang-39
An Acoustic Description of Stop Consonants and Vowels in Sorani Kurdish and English
...Show More Authors

This study aims to document and describe the speech sounds and sound inventory that are present in Sorani which is dialect of Kurdish and compare the results with their English counterparts.  The research concentrates on the voicing system and the quality of Sorani sounds which are measured by using the voice onset time (VOT) of the stop consonants, and the first three formants of the vowel sounds; the closure duration of voiceless stop consonants in medial position is measured as well.

Ten native speakers of the Sorani dialect (5 males and 5 females) participated in this experiment. All speakers are between 20 and 50 years of age, were born in Sulaimanyiah, migrated to the US, and remain in the US at the time of recording. Speakers have been recorded using a Marantz PMD671 digital recorder and an Electro-voice 671BL microphone. Recordings will take place in a quiet atmosphere, in order to eliminate interference from background noise. The English measurements are taken from some previous studies that depended on the same kind of measurement strategy.

View Publication Preview PDF
Quick Preview PDF
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
Tue May 01 2012
Journal Name
Iraqi Journal Of Physics
Determination the dispersion parameters and urbach tail of iron chromate doped PMMA films
...Show More Authors

Films of pure Poly (methyl methacrylate) PMMA and Iron chromate doped PMMA have been prepared using casting method. Transmission and absorptance spectra have been recorded in the wavelength range (300-900) nm, in order to calculate, single oscillator energy, dispersion energy proposed by Wemple - DiDomenico model, average oscillator strength, average oscillator wavelength. The refractive index data at infinite wavelength which was found to obey single oscillator model which was found to increase from 2.27-2.56 as the doping percentage increase. The decreasing in the optical energy gap which was found according to Tauc model were (3.74-3.63) eV , is in good agreement with that obtained by wimple-DiDomenico model. The inverse behavior comp

... Show More
View Publication Preview PDF
Publication Date
Thu Mar 30 2017
Journal Name
Iraqi Journal Of Pharmaceutical Sciences ( P-issn 1683 - 3597 E-issn 2521 - 3512)
Synthesis of New Opioid Analgesic Peptide Analogues to Enkephalin (Leucine- and Methionine-Enkephalin)
...Show More Authors

A small number of researches were done in the design and synthesis of enkephalin analogues that are able to resist degradation effect of proteolytic enzymes with good bioavailability and half-lives.Through studying structure activity relationships we tried to incorporate phthalyl group, tryptophan and lysine amino acids in different positions in the basic backbone structure of the naturally occurring opioid Leu5- and Met5- enkephalin, in the hope that such insertion of these amino acids could induce interesting addition in the biological activity of these analogues with enhancement of their bioavailability, in addition to decrease side effects as addiction liability.

These synthesized peptides are:

    ... Show More
    View Publication Preview PDF
    Crossref
    Publication Date
    Tue Dec 01 2020
    Journal Name
    Iraqi Journal Of Physics
    Enhancement of thermal stability and wettability for epoxy/Cu coated carbon fiber composites
    ...Show More Authors

        This research study the effect of surface modification and copper (Cu) plating carbon fiber (CF) surface on the thermal stability and wettability of carbon fiber (CF)/epoxy (EP) composites. The TGA result indicates that the thermal-stability of carbon fiber may be enhanced after Cu coating CF. TGA curve showed that the treatment temperature was enhanced thermal stability of Ep/CF, this is due to the oxidation during heating. The Cu plating increased the thermal conductivity, this increase might be due to reduce in contact resistance at the interface due to chemical modification and copper plating and tunneling resistance.

       The increase of surface polarity after coating cause decreas

    ... Show More
    View Publication Preview PDF
    Crossref (7)
    Crossref
    Publication Date
    Mon Mar 01 2021
    Journal Name
    Iraqi Journal Of Physics
    Antibacterial and morphological properties of polypyrrole/silver nanocomposites synthesized by chemical oxidative polymerization
    ...Show More Authors

    Polypyrrole/silver (PPy/Ag) nanocomposites was synthesized via a chemical oxidative method. The AFM analysis is performed to study the surface roughness, morphology and size distribution of the PPy particles and PPy-ag nanocomposites. The results indicated that as the concentration of Ag in the nanocomposite increases, the roughness also increases. The size of nanoparticles was also evaluated and found in the range of 15 nm to 125 nm. The PPy/Ag nanocomposites exhibited an effectiveness against Gram-negative Escherichia coli showing an inhibition zone of 4mm and displayed poor efficacy against Gram-positive Staphylococcus aureus. Based on given adequate antibacterial characteristics of PPy/Ag nanocomposites, it can be identified as a pro

    ... Show More
    View Publication Preview PDF
    Crossref (3)
    Crossref
    Publication Date
    Thu Oct 01 2009
    Journal Name
    Iraqi Journal Of Physics
    Preparation Cadmium Telluride Compound and Study Structural Properties of thermal evaporation thin films
    ...Show More Authors

    Polycrystalline ingots of cadmium telluride have been synthesized using the direct
    reaction technique, by fusing initial component consisting from pure elements in
    stoichiometric ratio inside quartz ampoule is evacuated 10-6 torr cadmium telluride has
    been grown under temperature at (1070) oC for (16) hr. was used in this study, the phases
    observed in growing CdTe compound depend on the temperature used during the growth
    process. Crystallography studies to CdTe compound was determined by X-ray diffraction
    technique, which it has zinc blend structure and cubic unit cell, which lattice constants is
    a=6.478
    oA

    View Publication Preview PDF
    Publication Date
    Tue Sep 01 2020
    Journal Name
    Iraqi Journal Of Physics
    Biosynthesis of silver nanoparticles using Thyme Vulgaris leaves extract and its Antibacterial activity
    ...Show More Authors

    In the current research, an eco-biosynthesis method for synthesizing silver nanoparticles (AgNPs) is reported using thymus vulgaris leaves (T. vulgaris) extracts. The optical and structural properties of the nanoparticles is determined using UV-visible, x-ray diffraction (XRD) and field emission scanning electron microscope (FESEM). In addition, the synthesis factors such as the temperature, the molar ratio of silver nitride and thymus vulgaris leaves extract have been investigated. The XRD pattern presented higher intensity for the five characteristic peaks of silver. FESEM images for same samples indicated that the particle size was distributed between 24-56 nm. In addition, it’s observed the formation of some aggregated Ag particles

    ... Show More
    View Publication Preview PDF
    Crossref (5)
    Crossref
    Publication Date
    Mon Dec 30 2013
    Journal Name
    Iraqi Journal Of Chemical And Petroleum Engineering
    Kinetic Study and Simulation of Oleic Acid Esterification over Prepared NaY Zeolite Catalyst
    ...Show More Authors

    Esterification considers the most important reaction in biodiesel production. In this study, oleic acid was used as a suggested feedstock in order to study and simulate production of biodiesel. The batch esterification reaction of oleic acid was carried out at various operating conditions; temperature from 40 to 70 °C, ethanol to oleic acid molar ratio from 3/1 and 6/1 and a reaction time up to 180 min.
    The catalyst used was prepared NaY zeolite, which is added to the reaction mixture as 2, 5 and 10 wt.% of oleic acid.
    The results show that the optimum conditions, gives 0.81 conversion of oleic acid, were 6/1 molar ratio of ethanol/oleic acid, 5 wt.% NaY relative to initial oleic acid, 70°C and 60 minutes. The activation energy o

    ... Show More
    View Publication Preview PDF
    Publication Date
    Fri Jul 28 2017
    Journal Name
    Ibn Al-haitham Journal For Pure And Applied Sciences
    Physical & Mechanical Properties of Chemical Resistance Ceramic Tiles and Mortar to Alkali Solution
    ...Show More Authors

    Chemical resistance ceramic tiles and mortar to alkali solution are prepared and characterized in this study due to the lack of this kind of publications in ceramic literature. Most of the utilized materials are readily available raw materials and the other materials are available commercially. Physical and mechanical properties are measured and indicate that the prepared ceramic tile and mortars are competitive to traditional building materials. Chemical resistance test against alkali solution is also performed by subjecting test specimens to 10%NaOH liquid for two weeks. The results give no indication of chemical attack to specimens of ceramic tile and mortar. The results are discussed and important conclusions are drawn to encourage c

    ... Show More
    View Publication Preview PDF
    Publication Date
    Mon Feb 27 2023
    Journal Name
    Drug Development & Registration
    Cytotoxic Effect of 6-Ethyl-Chenodeoxycholic Acid and Cabazitaxel on PC-3 Cells
    ...Show More Authors

    Introduction. Chemotherapy with Cabazitaxel (CBZ) is a typical first-line treatment option for naïive castration-resistant prostate cancer resistant to docetaxel. On the other hand, Cabazitaxel's therapeutic success is constrained by chemoresistance and side effects.

    Aim. To assess whether 6 alpha-ethylchenodeoxycholic acid (6-ECDCA), a selective agonist for bile acid receptors will enhance the efficacy of CBZ in androgen-independent prostate cancer cells.

    Materials and methods. The 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) viability assay was used to assess the cytotoxicity of 6-ECDCA and CBZ medicines or t

    ... Show More
    View Publication
    Scopus (4)
    Crossref (1)
    Scopus Crossref