ISSN: 1817-2695

Volume 39, Issue 2

Volume 39, Issue 2, Spring 2013, Page 1-147


Experimental and Theoretical Study of the Laser Induced Diffraction Pattern in the Acid Orange 10 Dye: Polyacrylamide Gel

Alaa; Y. Al-Ahmad; Hassan A. Sultan; Hussain A. Badran; Chsib Meshari

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 1-12

We observed and studied diffraction rings generated in an Acid Orange 10 dye doped Polyacrylamide gel (AO10: PAA gel) using cw visible laser beam. The number of rings increases almost exponentially with increasing input power and concentration of the samples. The refractive index change, ∆n, effective nonlinear refractive index, n2, variation of thermo-optic coefficient ,dn/dT, figure of merit ,W, and thermal figure of merit ,H, are found to be 0.004788 , 10-5 cm2/Watt, 1.01×10-4 1/oC, 13.7 and 0.45×10-4 respectively. The effective nonlinear refractive index, n2, was determined based on the observed number of rings. This large nonlinearity is attributed to a thermal effect. Theoretical diffraction patterns that agree well with experimental one are generated using a wave theory.

The output dynamics of mutually coupled semiconductor face to face laser systems under noise effect

H. A. Sultan; Kansaa A. Al-Temimi and A. R. Ahmed

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 13-27

We have explored the dynamics of fields from two synchronized face- to- face lasers in the presence of noise. The study was carried out under the effect of coupling strength between the two systems, line-width enhancement factor and injection current density. All these factors affect the dynamics of temporal variation of fields from both lasers. Regions of amplitude death occurs within chaotic regions as a result of increasing of injection current density and coupling strength.

Cascade result of Input-Output Stability for Index One Descriptor Control Systems

Wasan Ibrahim KhalilAL-Hamada

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 28-39

We study the recently introduced notion of input-output stability, which is a robust variant of the minimum-phase property for general smooth nonlinear control systems. The purpose of this paper is to investigate how the input-output stability property behaves under series connections of several subsystems. We will prove two lemmas. The first one says that the cascade of a 0-detectable descriptor system with an input-output stable descriptor system is weakly 0-detectable, which is a result of independent interest. The second lemma is a direct generalization of the first one.

On the existence and the nonexistence of some (k,n)-arcs in PG(2,37)

Mohanad S. Khalid

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 40-48

A (k,n)-arc is a set of k points of a projective plane such that some n, but no n+1 of them, are collinear. The maximum size of a (k,n)-arc in PG(2 q) is denoted by m_n (2,q). In this paper we proved that 666〖≤m〗_21 (2,37)≤741, 〖703≤m〗_22 (2,37)≤779, 739〖≤m〗_23 (2,37)≤817, 777〖≤m〗_24 (2,37)≤855, 816〖≤m〗_25 (2,37)≤893, 854〖≤m〗_26 (2,37)≤931, 894〖≤m〗_27 (2,37)≤969, 〖933≤m〗_28 (2,37)≤1007, 970〖≤m〗_29 (2,37)≤1045, m_30 (2,37)≤1083, m_31 (2,37)≤1121, m_32 (2,37)≤1159, m_33 (2,37)≤1197, m_34 (2,37)≤1235, m_35 (2,37)≤1273 and m_36 (2,37)≤1311.

On the stability of an isentropic charged superdense star models

Dhuha Majeed Al-Yassiri and Mahmood K. Jasim

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 49-56

The objective of this paper is to study the stability of charged isentropic superdense star models. A limitation of the density variation for different models guided by a specific choice of a measure of departure from physical geometry of the physical space to ensure the physical acceptability have been obtained and analyzed. The solution so obtained has large density and pressure at the center, however the energy conditions are seen to be satisfied throughout certain spherical regions. In addition to that, these models are seen to satisfy various physical conditions. In our present paper the stability of charged superdense star has been found. Runge-Kutta method has been implemented for the superdense models which it has been found to satisfy various physical conditions.

Similarity Analysis of Differential Equations By Lie Group Technique

Dhuha Majeed Al-Yassiri

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 57-67

The goal of similarity transformation method is to provide the solution for differential equations by using Lie group technique. However higher order differential equations are going to be reduced to a lower order. For partial differential equation at least a reduction in the number of independent variables is sought and in favorable cases it reduces to ordinary differential equation with special solution [4]. Also we investigated completely the Similarity analysis of 2nd order differential equations.

Speech Encryption Using Chaotic Map and Blowfish Algorithms

Maysaa abd ulkareem Nasser and Iman Qays Abduljaleel

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 68-76

Recently emerged interest in the transfer of information, whether speech or image or text information . To maintain the confidentiality of such information we need to encrypt it. In this paper, we used wavelet packet transform to transfer speech signal from time domain to frequency domain after that a new encryption algorithm is proposed by analyzing the principle of the chaotic encryption algorithm based on logistic map and blowfish encryption algorithm . Chaotic function is used to make the algorithm more secure and make the process of the encryption and decryption more complex. We used partial encryption technique for faster the encryption /decryption speed process. Moreover, the performance of the proposed algorithm is also estimated by used SNR,PSNR,NRMSE,RSE quantities. Experimental result of the algorithm shows that the algorithm is faster, stronger and more secure. Use the Matlab ver.8.a in the different treatments stage.

Fuzzy Neural Network for Dynamic load balancing of nodes for ad hoc network using

khulood Ahmed Nassar and ZainabSaadKaram AL-Musawi

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 77-89

In ad hoc network, many traffic types reach continually with different rates and with different times. There are three cases of rates (low, medium and high) which depending on the capacity of links. The performance of ad hoc network is reducing when an imbalance load of traffic occurs among the links or nodes. There is a necessary thing to use a technique to provide load balancing between the nodes (or links) of network that leading to destination node for the arrival traffic rates, so as to avoid exceeding the traffic rates on the viability of nodes (or links).
In this paper, a system based on fuzzy neural networks (FNNs) is proposed for solving the load balancing problem in the Ad hoc networks to achieve dynamic load balancing is facing continuous changes in the network. The proposed fuzzyneural system (FNS) is located at each point in the network to make load balancing for nodes using two fuzzy neural networks , firstly,FNN1 based on two measurements which are queue length, whichpermitqueue size to classify queue state ( Under –full ……. Over – full). Secondly, FNN2 used queue state that represented output of the FNN1, while the other is throughput for node and the output is load for this node.The Gaussian member ship function is used with backpropagation algorithm for training the NN.

Optimizing Object Recognition Task: A Practical Study in Neurobiology by using normal C 57BL/6 mice.

Talib F. Abbas

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 90-98

Rats and mice have a tendency to interact more with a novel object than with a familiar object. This tendency has been used by behavioural pharmacologists and neuroscientists to study learning and memory. A popular protocol for such research is the object-recognition task. Animals are first placed in an apparatus and allowed to explore an object. After a prescribed interval, the animal is returned to the apparatus, which now contains the familiar object and a novel object. Object recognition is distinguished by more time spent interacting with the novel object. Although the exact processes that underlie this 'recognition memory' requires further elucidation, this method has been used to study mutant mice, aging deficits, drug exposure . This study has been conducted to optimize this method by using different objects at different times. The results are shown by using small objects in different colures and shapes in 4 hours better than large ones in other times, which I recommend to Object Recognition Task.

Synthesis, Characterization and Study of Biological Activity of Some New Nitrone and Isoxazolidine compounds

Hussam Hamza Salman and Nisreen Nadhim Majeed

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 99-111

Two series of new compounds of nitrofuran derivatives I and II were prepared. The first included nitrone compounds synthesized from the reaction of 5-nitrofurfural with N-arylhydroxylamines. The second series, concerned with the synthesis of isoxazolidines by 1,3-dipolar cycloaddition reaction of nitrones with N-phenylmaleimide. The synthesized compounds were characterized by elemental analysis, UV-visible spectroscopy, FT-IR spectroscopy and 1H-NMR spectroscopy. All prepared compounds were screened for their antibacterial activity against two bacterial species, Escherichia coli and Staphylococcus aureus, as well as fungi (Aspergillus niger). The activity data showed that most compounds had good activity as compared with standard drugs. The results of LD50 of some selected compounds showed that some are moderately toxic and others are non toxic in the range of graded doses.

Effect of Cisplatin drug on sperm characterizes, spermatogenesis and sex hormones levels of male mice Mus musculus L.

Faris Shaker Kata

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 112-124

The present study has aimed to investigate the effect of the anticancer drug cisplatin in sperm count, sperm abnormalities, spermatogenesis and sex hormones in male mice were divided into three groups consisting eight animals in each group. The first group was served as control and received 0.9% of normal saline. The second group was received cisplatin (1 mg/kg). The third group was received cisplatin (2 mg/kg ). The mice were treated 8 times of cisplatin (i.p.) for 16 days at intervals of 48 hr between treatments. The animals were sacrificed after 16 days of last injection .The sperm count significantly decreased in the treated with two doses (1and 2mg/kg) at ( p<0.01) .Cisplatin induced tail abnormalities, but a significant increase was seen in the high dose only. The spermatogonia, primary spermatocyte, germinal epithelial thickness and seminiferous tubular diameter decreased significantly in the both doses, also elongated spermatids decreased significantly in the treated mice with high dose only. Drug-induced germinal epithelial sloughing and vacuoles in the seminiferous tubules for testis . Luteinizing hormone (LH) and testosterone levels decreased significantly in male mice with (1 and 2 mg/kg) doses of cisplatin compared with control group, whereas, there was no significant difference in the serum follicle-stimulating hormone (FSH) of male mice treated with two doses of cisplatin.

A new simple method for the treatment of waste water containing Cu (II),Zn(II) Ions using adsorption on driedConocarpus erectus leaves

Tarikak. Nasser and Ihab.A.altameemi; Thuraya.M.A

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 125-136

A new simple method for the treatment of waste water effluent containing Cu(II), Zn(II) was developed using driedConocarpus erectusleavesas a low-cost natural . Batch experiments were conducted to determine the effects of varying adsorbent weight, pH, contact time, metal ion concentration and temperature of adsorption. The adsorption of cu (II) was found to be maximum (94.7%) at pH9, at 25°C, metal ion concentration 100 ppm , contact time 60 min andSpeed Shake(185rpm) . adsorption capacity of Cu (II) and Zn were found maximum (94.7% and 93.3%) respectively at optimum conditions. The order of the removal of the efficiency of these metals was found Cu> Zn. Freundlich isotherm was found to be suitable for the adsorption of Cu(II),Zn(II) ,functional groups[(C-N ,((C-O),(C=O),(O-H)] identification was given using FTIR spectrophotoscopy.

The Preparation, Characterization and the Study of Thermal Properties to Some Co-Phthalocyanine Polymers Derivative from Epichlorohydrine and Dichlorodimethyl Silane

Mohanad A.Al.Hamad and Mohanad J. Al.Assadi

Journal of Basrah Researches (Sciences), Volume 39, Issue 2, Pages 137-147

A novel class of polymer containing the metallophthalocyanine ring [MPc, M= Co(II)] in the chain was synthesized by polycondensation of 4.4',4'',4'''-tetraminophthalocyanato cobalt (II) with epichlorohydrine and dichlorodimethyl silane by [1:2] mole ratio (MPc: Epichlorohydrine or dichlorodimethyl silane). The structures of the polymers were characterized by FTIR, U.V-Visible spectrophotometry, and X-ray diffraction. The thermal stabilities of the polymers were evaluated by dynamic thermo gravimetric analysis (TG) and diffraction scanning calorimetric (DSC).