ISSN: 1817-2695

Volume 43, Issue 2

Volume 43, Issue 2, Autumn 2017, Page 1-95


Band Structure Variation for SWCNTs under Deformation

Journal of Basrah Researches (Sciences), Volume 43, Issue 2, Pages 1-11

The electronic properties of single walled carbon nanotubes (SWCNTs)
influenced by the mechanical elastic deformation are investigated by using a tightbinding
approximation. We analyze the band structure for SWCNTs in a wide range of
energies around a Fermi energy level. Our work includes the uniaxial, torsional and sublattice
deformation, which is applied to modify the electronic transport properties of
SWCNTs, e.g. the energy spectrum as a function of the deformation tensor. However, the
results showed that the electronic properties of SWCNTs are affected by deformation
processes, where the energy spectrum is changed perceptibly.

A Robust, Secure and Imperceptible Image Watermarking Using DWT-SVD and Encryption

Journal of Basrah Researches (Sciences), Volume 43, Issue 2, Pages 21-29

Digital Watermarking is one of the techniques to hinder the unauthorized use of digital media. This technique can help the protection of proprietorship rights toward ensuring the copyright information and authentication in a networked environment. Inspired by combining Discrete Wavelet Transform (DWT) with modification of Singular Value Decomposition (SVD). Digital image watermarking technique based on the encryption algorithm is proposed in the present work in order to improve the robustness, security and the imperceptibility. The watermark image is encrypted by using Advanced Encryption Standard (AES) encryption technique with a secret key and then transformed the original (host) and watermark images using DWT and modified SVD for embedding the encrypted watermark in the high frequency sub band (HH) of the original (host) image. The experimental results show that the proposed method is superior from where robustness, imperceptible and security as compared with some related methods.

Secure mining of the cloud encrypted database

Journal of Basrah Researches (Sciences), Volume 43, Issue 2, Pages 44-57

Due to the stunning characteristics of cloud computing, such as tremendous scalability, elasticity, cost-efficiency, pay-as-you go, and storage solutions, many enterprises and individuals are motivated to outsource their data to cloud service providers for availing its benefits. Protecting and preserving the privacy of these data represent a persistent barrier from adopting the cloud computing. Mining the cloud data may be misused for a variety of purposes. To counter this problem, we propose a secure framework for mining the cloud data in a privacy preserving manner. Secure k Nearest Neighbor (kNN) classifier is used in this paper. In this work, we preserve all the restrictions that we specify privacy and success to exclude the third party from the mining process. We test our secure classifier with different parameters to explain its influence on the accuracy and privacy the suggested classifier.

Theoretical Study of the Chemisorption of Hydrogen Atom on Perfect Graphene

Journal of Basrah Researches (Sciences), Volume 43, Issue 2, Pages 70-79

We use the Newns-Anderson model to study the chemisorption process for hydrogen atom on perfect graphene. The self-consistent solutions for hydrogen atom occupation levels show that the physical solution is magnetic for all normal distance values from the graphene sheet. And the metallic part of the chemisorption energy is the dominant one for all distance values, which gives the obvious description to the type of hydrogen bonding formed with the graphene.

The Using of The Soap of The Beta Vulgaris to Modify Polyurethane Foam as an Antimicrobial Polymer

Journal of Basrah Researches (Sciences), Volume 43, Issue 2, Pages 12-20

Polymeric materials containing the soap of The Beta vulgaris have not been studied and applied to a variety of antimicrobial-relevant areas. The soap of The Beta vulgaris was prepared using the ordinary cocking method. The soap was mix with polyurethane foams in to ways but one of the two ways produce a weak polymer matrix. In order to know the activity of the soap of The Beta vulgaris as an antimicrobial agent mixed with polyurethane foam. The types of microbes were used. Susceptibility was determined by the Kirby Bauer disk diffusion method Bacteria (Staphylococcus auras, Escherichia coli) and Fungi (Candida albicans) were grown on nutrient broth at 37C overnight The obtained results show no clear inhibition zone for the three microbes. The amazing result is that the soap of The Beta vulgaris is working as a biodegradation agent that when mix with the foam of polyurethane will produce a biodegradable polymer foam.

The Effect of Web Opening in the Shear Span on the Ultimate load of RC Deep Beams

Journal of Basrah Researches (Sciences), Volume 43, Issue 2, Pages 30-43

Deep beams with rectangular (R) and T- cross sections that have web openings are widely used in concrete structural field for servicing purposes. This situation should be treated with special care depending on the type of the load subjected and the location of the opening. This study is aimed to investigate the ultimate load; carrying capacity of indirectly loaded deep reinforced concrete (RC) beams through an experimental and analytical program. The experimental work has two parts of specimens, where the six deep beams have ratio of shear span- to- effective depth (a/d) is 1.0 have been consider. The first part consists of two deep beams with rectangular and T- cross sections, which formed without web opening, with vertical web reinforcement. The second part consists of four deep rectangular and T-beam cross sections in which, all beams have openings in the shear span, with deferent reinforcement arrangements. The behavior of deep beams was observed, cracking and ultimate loads. The experimental results indicate that the web opening in the shear span of the beams shows a significant reduction in the ultimate load capacity. For predicting the ultimate load carrying capacity for deep beams with opening, Eq. of Kong & Sharp (1977) used. Comparison between experimental finding and numerical results showed a good agreement with experimental results of ultimate load capacity of beams with opening.

Measurement of Radioactivity in Flour and Macaroni Consumed in Basrah Governorate, Iraq and Evaluation of Gamma Dose Rates, Radiological Hazard Indices, Excess Life Time Cancer Risk and Ingestion Effective Dose

Journal of Basrah Researches (Sciences), Volume 43, Issue 2, Pages 58-69

The radioactivity levels of238U, 232Th, 40K and 137Cs were determined in 17brands offlour (6 brands) and macaroni(11 brands) consumed in Basrah, Iraq.This papershowed a comparison of the gamma absorbed dose rates (D),annual effective dose equivalent (AEDE)and the excess lifetime cancer risk (ELCR)for various types offlour and macaroni measured by SAM940-2G operating with BNC 2ʺx2ʺ gamma-ray NaI(Tl) detector along withthe thermoluminescencetechnique. For flour samples, the minimum specific activity values of 238U, 232Th, 40Kand 137Cs were 0.238±0.002 Bq/kg (at sample F1), 0.117±0.001 Bq/kg(at sample F4), 3.529±0.001 Bq/kg(at sample F4) and 0.040±0.007 Bq/kg(at sample F3) respectively, while the maximum values of the same isotopes were 0.325±0.002 Bq/kg(at sample F3),1.469±0.002 Bq/kg(at sample F5),102.348±0.001 Bq/kg(at sample F6) and0.179±0.003 Bq/kg(at sample F2) respectively. For macaroni samples, the minimum specific activity values of 238U, 232Th, 40Kand 137Cs were 0.195±0.002 Bq/kg(at sample M2),0.029±0.004 Bq/kg(at sample M1),40.390±0.001 Bq/kg(at sample M6)and0.01±0.008 Bq/kg(at sample M11)whereas the maximum values of the same isotopes were 1.430±0.002 Bq/kg(at sample M3),2.629±0.002 Bq/kg(at sample M11),294.495±0.001 Bq/kg(at sample M10) and0.566±0.002 Bq/kg(at sample M4).Various radiation hazard indices including the radium equivalent activity (Raeq), the ingestion effective dose (HT,r), the internal hazard index (Hin), the external hazard index (Hex), the gamma index (Iγ) andthe alpha index (Iα) have been determined for all 17 samples. Allachieved results have been found to be undertheinternationallimit standards. Thus, selected flour and macaronitypes are safe to be consumed in Basrah governorate. The findings of thisstudycould be used as a first step to create radiological baseline data of the hazard radiation in basic foodstuffsconsumed in Basrah/Iraq.

Hydraulic Paramters Of Groundwater Aquifers In Khanaqin Basin

Journal of Basrah Researches (Sciences), Volume 43, Issue 2, Pages 80-95

ABSTRACT
Estimating the physical properties of water-bearing layers is an essential part of
groundwater studies. One of the most effective ways of determining these properties is to
conduct and analyze aquifer tests. The aim of this research is to carry out hydrogeological
investigation in Khanaqin basin within Diyala Governorate in the east of Iraq to calculate
hydraulic parameters of the most important product groundwater aquifers. Cooper-Jacob
and Theis Recovery test methods were used to calculate transmissivity and storage
coefficient after field investigation of aquifers extended in the basin. The geographical
position, elevations, static water levels, depths, thicknesses and maximum yields were
carried out during field work. The results showed that Khanaqin basin has two geological
units represented by unconfined and confined aquifers, where (4) wells were used in
pumping test. The average transmissivity parameter was ranged between (273-4590
m
2
/day) in unconfined aquifer while this range was (14.47-244.35 m
2
/day) in confined
aquifer. Transmissivity contour map indicated increasing value of this parameter towards
northern west direction of the Khanaqin basin. Storage coefficient ranged between
(3.5*10-5
) to (1.14*10-3
). The increasing of transmissivity parameter as groundwater
movement generally flow towards the northern west leading to increase groundwater
discharge from wells penetrate unconfined and confined aquifers