Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Anti


Copper Oxide NPs: Synthesis and their Anti-Dermatophyte Activity against Trichophyton rubrum

A. Kadhim; A.M. Haleem; R.H. Abbas

Engineering and Technology Journal, 2017, Volume 35, Issue 3, Pages 276-281

Trichophyton rubrum (T.rubrum) is a pathogenic dermatophyte that can causes fungal infection in keratinized layer of the human tissues such as skin, hair and nails. This work was carried out to study the antifungal activity of CuO nanoparticles (CuO NPs) on the viability of T.rubrum. CuO NPs have been synthesized by pulsed laser ablation of copper target immersed in liquid media using Q-switched pulsed Nd:YAG laser with 1064 nm. The optical properties and the surface charge of CuO NPs colloidal were characterized using UV–Vis spectrophotometer and Zeta potential techniques. UV–Vis spectrophotometer exhibited two peaks of absorption of CuO NPs colloidal: sharp peak at 200 nm and another peak at 630 nm. Zeta potential technique showed negative charge of CuO NPs colloidal (-28.16 mV). The morphological properties of CuO NPs such as particle size, shape and particle size distribution were characterized using Transmission Electron Microscopy (TEM) and Atomic Force Microscopy (AFM), the shapes were spherical and the particle size distribution was inhomogeneous which ranges between 20 to 180 nm. The synthesized CuO NPs presented suitable fungistatic activity against T.rubrum and its highest growth-inhibitory effectiveness was at high concentration (100 μg/ml) and high exposure time (3 hrs). Moreover, the inhibition rate of T. rubrum progressively increased with increasing CuO NPs concentration and exposure time.

Study of the Antibacterial Activity by using Titanium Dioxide Nanoparticles

Kareem Hussian AL Shibaib

Engineering and Technology Journal, 2016, Volume 34, Issue 6, Pages 198-203

The study was the effectiveness of the microbial activity by using titanium dioxide nanoparticles which are prepared by using laser ablation of titanium pellet immersed in de-ionzed water. Palsed Nd: YAG laser with 1064nm wavelength and laser energy 250 mJ was used to irradiate the target for ablation time 15 min, 200 pulses. Where studied synthetic characteristics of the sample prepared using the X-ray diffraction pattern of nanoparticles proved the presence Alatanas planes. A scanning electron microscope measurement appearance Tio2 nanoparticle of structures with cube shapes , while the results of Zeta potential was the values being equal to (34) are located within the range of suspension potential Stability. The results of antimicrobial activity of Tio2 nanoparticle against bacterial stratin S.aureus, C .albicans, and E.coli with antibiotic at concentration .1000 mg/ml (AMC, DO10 and CN10) using well diffusion assay showed. The best concentration of 1000 mg /ml of antibiotics give us with dioxide nanoparticles to inhibition bacterial growth .The results showed that the nanoparticles with antibiotics inhibition the growth of S.aureus then C.albicans which is more sensitive than E.coli .Our results showed that dioxide nanoparticles have synergistic effect with (CN10& DO10) .And there is no any synergistic effect with (AMC).

Iris Anti-spoofing: Static and Dynamic Technique

Hanaa M. Ahmed; Bushra Jabbar Abdulkareem

Engineering and Technology Journal, 2016, Volume 34, Issue 4, Pages 598-609

The probabilityof the biometric system to be spoofed is widely acknowledged. Complete security does not really exist, butsignificant efforts have led to study such threats and to develop countermeasures to direct attacks to the biometric system in an attempt to ensure the security and to reduce this risk.
This paper presents two novel anti-spoofing techniques to protect iris biometric system from spoof attack, static and dynamic. Static technique is based on the principle of degree of sharpening of the input eye image.Dynamic technique is based on variation of the size of the pupil if the illumination is increased. This technique is tested on 15 folders of original MMU database (Multi Media University database) Each folder contains two eyes image sampleswhichrepresent live trail and 15 folders of(MMU database) eye images printed using scanner device and photographed using a specific camera are saved in computer to represent 15 attempts of spoof attack.
The evaluation tests ofliveness detection phase for iris which is applied in iris database show that the detection of the liveness properties is very good as depicted in Table (1) and Table (2).

Estimation of Serum Anti-Cyclic CitrullinatedPeptide, Glutathione, Copper and Zinc in Patients with Multiple Sclerosis

Israa Zainal; Abdulnasser AL-Gebori

Engineering and Technology Journal, 2012, Volume 30, Issue 14, Pages 2461-2466

This study aimed to determine the level of anti-cyclic citrullinated peptide
(ACCP), glutathione (GSH), copper (Cu) and zinc (Zn) in sera of the patients with
Multiple Sclerosis (MS) and healthy subjects to examine their possible role in this
disease. Thirty patients in MS were included for evaluation of serum anti-cyclic
citrullinated peptide (ACCP), glutathione (GSH), copper (Cu) and zinc (Zn) and
they compared with thirty normal healthy subjects. Results revealed that the serum
levels of GSH and Cu were highly significant lower in MS patients than in healthy
control group p< 0.005. The mean serum levels of Zn for both groups were
significantly decrease p< 0.04, but the mean serum levels of ACCP in both groups
were no significantly decrease p > 0.201.