Print ISSN: 1681-6900

Online ISSN: 2412-0758

Volume 31, Issue 2

Volume 31, Issue 2, January 2013, Page 25-285

Effect of Methanolic Extract of Myrtus Communis on Some Pathogenic Bacteria

Suhad A. Ahmed; Abbas A. Mohammed; Wasnaa H. Mohammed; Ali H. Saadoon

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 122-129

In this study the antibacterial activity of the methanolic extract of Myrtus communis was investigated against Escherichia coli, Klebsiella pneumonia, Pseudomonas aerogenosa and Staphylococcus aureus by agar disc diffusion. Serial concentrations of the extract were tested (1, 2, 3, 4 and 5mg/ml). Most of the extract concentrations showed a relatively high antibacterial activity against all the tested bacteria. The concentration 5mg/ml of plant extracted has the maximum antibacterial activity against all bacterial isolates. Antimicrobial activity of Myrtus communis extract was compared with a number of antibiotics like: Ampicilin (AM10), Tetracyline (TE30), Erythromycin (E15), Carbnicilin (PY100) and Gentamycin (CN10) using antibiogram test. Antibacterial activity of latest concentration (5mg/ml) of Myrtus communis was better than that to Gentamicin against Klebsiella pneumoniae, Escherichia coli and Pseudomonas aerogenosa.

Study the Effect of Oblique Deposition on Surface Characterization and Microstructure of Evaporated Cadmium Thin Films

Wafaa K.Khalef; Waseem Najeeb Ibrahim

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 130-141

The influence of oblique angle deposition on the surface morphological and microstructure of metallic cadmium films are studied. The films were deposited normally and obliquely at different angles (0º, 50º and 70º) by vacuum evaporation technique. XRD technique used to study the crystalline structure of these films and shows that the polycrystalline nature of these films and All layers irrespective of deposition parameters develop a preferred (002) plane. The grain size increased with the increase of deposition angle and clearly facetted morphology was observed. The surface morphology of the deposited materials has been studied using atomic force microscopes (AFM) and optical reflection microscope. The AFM results demonstrate that the film deposition at higher oblique angle (70°) has higher surface roughness. Reflection microscope results showed that the smoothness and homogeneity of the films are decreasing with increasing the deposition angle d), and the surface roughness increased with increasing angle. The optical characteristics of the prepared thin films have been investigated by UV-VIS spectrophotometer in a wavelength ranging (350-900) nm and shows by increasing the inclination angle of deposition will lead to transmission decreases of the films.

A Proposal to Detect Computer Worms (Malicious Codes) Using Data Mining Classification Algorithms

Soukaena Hassan Hashim; Inas Ali Abdulmunem

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 142-155

Malicious software (malware) performs a malicious function that compromising a
computer system’s security. Many methods have been developed to improve the security
of the computer system resources, among them the use of firewall, encryption, and
Intrusion Detection System (IDS). IDS can detect newly unrecognized attack attempt and
raising an early alarm to inform the system about this suspicious intrusion attempt. This
paper proposed a hybrid IDS for detection intrusion, especially malware, with
considering network packet and host features. The hybrid IDS designed using Data
Mining (DM) classification methods that for its ability to detect new, previously unseen
intrusions accurately and automatically. It uses both anomaly and misuse detection
techniques using two DM classifiers (Interactive Dichotomizer 3 (ID3) classifier and
Naïve Bayesian (NB) Classifier) to verify the validity of the proposed system in term of
accuracy rate. A proposed HybD dataset used in training and testing the hybrid IDS.
Feature selection is used to consider the intrinsic features in classification decision, this
accomplished by using three different measures: Association rules (AR) method, ReliefF
measure, and Gain Ratio (GR) measure. NB classifier with AR method given the most
accurate classification results (99%) with false positive (FP) rate (0%) and false negative
(FN) rate (1%).

Design and Implementation of Controlling and Monitoring System Based on Wireless VPN

Siraj Qays Mahdi

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 156-170

The work presented in this paper was concerned to design a new remote control and monitoring system, which can be used for controlling the electrical devices at college/office and monitoring the clients' status by using the Virtual Private Network (VPN). The system is consists of server and multi clients and utilize VPN for establish a secret communication within internet network or enhanced wireless network. The server employed for controlling the remote devices which inherent with clients through serial interface. The interface circuit was designed to connect the serial port with the devices which are consisting of (Max238, UART, and CD4060) to complete the functions of interface. There are 8 pins for data output, which can produce up to 256 different control signal statuses. The mechanism of monitoring operation was achieved through executing two function: firstly, the files transfer (image or text) between sever and clients; secondly, monitoring the client status through server computer. For more security a new wireless enhanced network was built to implement the Virtual Private Network (VPN) which consists of four power nano station (5GHz) to establish transfer information for distance up to 35 Km. PPTP (Point to Point Tunneling Protocol), IPSec. (Internet Protocol Security) was configured to give secret authentication for virtual private network. Visual basic language was used to implement the frameworks (GUI) and socket connection.

Improving Laboratories Efficiency through Website Using Text Mining

Abeer Tariq

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 171-184

Text mining is an emerging technology that can be used to augment existing data in corporate databases by making unstructured text data available for analysis.
This research aim to present a proposed text mining system customized to improve laboratories efficiency. This is done by taking the electronic comments and e-mails produced to the organization web as inputs for that proposed mining system. The proposed text miner is customized for emails and comments written to the organization. For that the basic text mining algorithm will almost be modified by adding new steps, modify some steps by customizing Natural Language Processing (NLP), data mining techniques and building the document database. The proposal applied on the Computer Sciences Department Web and the results obtained are suitable to be published.

Physical Properties of Cdo Thin Films Prepared by Spray Pyrolysis Technique

Douaa sulayman Jbaier

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 185-193

In this paper CdO films of 3.8 μm thickness were deposited onto glass and Si-wafer substrates by spray pyrolysis technique at 250oC temperature. The structure, optical and electrical properties were investigated. The structure of the films were studied by X-ray diffraction have polycrystalline structure with (111) preferential orientation. The films have good transmittances in visible and NIRregion, with direct optical band gap (2.5eV).The electrical conductivity was measured as function of temperature and theactivation energy was about(0.155and 0.241) eV.The electrical characterization of CdO/Si hetrojunction diode was investigated by current –voltage studied.The reverse current strongly increased with illumination intensity and voltage bias.

Effect of Deposition Temperature and Ph Value on Structure, Optical and Electrical Properties of Cdo Prepared by CBD

Selma M.Hassan Al-Jawad; Hadia Kadhim J.Alogili

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 194-215

In this work CdO films were prepared by using chemical bath deposition, which is a simple and inexpensive technique suitable for large deposition area. Many growth parameters have been considered in this work to specify the optimum condition, namely (deposition temperature, and pH value). Structure and electrical properties of CdO films are investigated and analyzed extensively with respect to growth conditions. The high conductivity and high visible transmission (> 80%) make the films suitable for use in the transparent electrodes.

Synthesis and Characterization of the Triazole Derived from Thiosemicarbazide, 4-Amino-5-Phenyl-4H-1,2,4- Triazole-3-Thiol and Their Copper(II) and Nickel(II) Complexes

Hamdan Abood Aday

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 216-221

Triazole N-(3-mercapto-5-phenyl-4H-1,2,4-triazol-4-yl)hydrazinecarbothioamide prepared in good yield via the condensation of 4-amino-5-phenyl-4H-1,2,4-triazole-3-thiol and thiosemicarbazide. The copper (II) and nickel (II) complexes of the triazole ligand were also prepared.

Real Time Network FileS Transfer Protocol (RTFTP)

Alaa Noori Mazher

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 222-231

In recent days there is a need to keep environment updated. The paper present flexible and simple protocol for updating file system for personal computer through internet. The suggested system depends on the network main component (socket) and uses the User Datagram Protocol (UDP) internet protocol. The system has the ability to gather information through special channel (port) about the used directory. This information includes the files name, files size, file dates, files extension. Through simple protocol this information gives the administrator indicated for the changed file and in what location in order to implement updating the file in the other side. The system serves many users and applications. It provides simple, flexible system that could be installing in any side with few steps.

Oxygen Effect on Nanostructure Sno2 Films and Morphology by Pulsed Laser Deposition

Suaad .S.Shaker; Adawiya J. Haider

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 232-238

This work includes the deposition of SnO2 as a thin film on Si (111) by using the pulsed laser deposition method. The influences of oxygen pressure on the structural properties of Tin dioxide films were investigated. The X-ray diffraction results show that the structure of the films change from high polycrystalline to worse polycrystalline at an oxygen pressure of 10mbar. The surface morphology of the deposits materials was also studied by using a scanning electron microscope (SEM) and atomic force microscope (AFM). The results show that, the grain sizes of the nano particles observed at the surface depends on the oxygen pressure. As the pressure of the O2 gas increases the densities of the particles increases too. An oxygen pressure of 5×10-1 mbar was found the best pressure for the growth process. While the RMS roughness was seen to increase with increasing oxygen pressure. It was equal to (11.3 nm) for thin films deposited at (300)ºC.

An Adaptive Filter for Image Noise Removal Using Chi-Square Goodness-of-Fit to Uniform Distribution

Abdulameer A. Kareem; Abdul Monem S. Rahma; Hilal H. salih

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 239-251

Noise is any undesired information that contaminates an image. The ideal situation (no noise) never occurs in practice, so there is a little point in ignoring it. Hence, one of the primary concerns of digital image processing is to increase image quality through the moderation of the degradations introduced by the noise which contaminate the image.
The main objective of this work is to combine the statistical analysis methods and image processing techniques to increase image quality by removing the noise that corrupts it, so that the image will be ready for analysis and interpretation.
In this work An Adaptive Filter Using Chi-square Goodness-of-Fit to Uniform Distribution is presented . Results shows that the proposed method removes noise from images corrupted by a variety type of noise effectively in such a manner it preserves image edges and details. The proposed method is faster than many of the traditional noise removal techniques.

Study of the influence of surface roughness, Sample heat and Sample shape on Wear rate measurements

Abdulhadi k.Judran; Najim Abd-Alkadhim; Haithim T.Hussein

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 252-260

Metal samples such as Copper and Aluminum and alloy as Brass were prepared and machined as discs (plane sample) and as a half rings (curvature sample). The samples were polished by using metallographic paper with different grades. The micro roughness and the initial weight were measured for all samples before wear tests, and then the samples were subjected to wear testing system under lubricated condition, fixed normal load of 15N, sliding time 30 min and sliding speed of 750 rpm. During the running of wear testing system the temperature of the samples were measured .The wear rate was calculated by employing the weighing method. It is clear from the results that micro roughness values increasing leads to increase in weight loss , wear rate and the temperature of samples .The effect of sample shape on weight loss , wear rate and sample heat is also obvious when noticing that the different measurements of weight loss, wear rate and sample heat of curvature samples are higher than that of plane samples .

Proposed Digital Signature Using One Time Pad

Shaimaa H. Shaker

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 261-275

Authentication protects two parties from the third party, but not protect against each other. Digital signature verification of the message source, protects the authority from anyone.
This paper proposes a solution for digital signature generation to digitally signing an submitted request to library website using the one time pad( OTP). In this paper, we focus our attention on decreasing the electronic requests security vulnerability by securing requests using an approximate one-time pad. A one-time pad, considered to be the only perfectly secure cryptosystem, secures an electronic request message for transport over any medium. The keys generated from request information using proposed hash algorithm deal with multiple parameters each one has multi state (0,1,2,3) as input and output hashed key of (0..9) state.

Effect of the Crude Leaf Extracts of Dodonaea Viscosa on Some of Algae

Alaa M. Dh. Al-Haidari

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 276-285

The present study has been conducted to evaluate the antialgal activities of the leaves crude extracts of Dodonaea viscosa plant. The antialgal activities of ethanol (80%) and diethyl ether crude leaf extracts of D. viscosa were tested against Microcystis flos- aquae, Scenedsmus dimorphus and Mougeotia scalaris. The agar well diffusion method was used to evaluate the inhibitory actions of these extracts with three concentrations: 5,10, and 20 mg/ml. The results showed that the ethanol extracts were more effective on algae than diethyl ether extracts. The alga: Mougeotia scalaris and Microcystis flos- aquae have more sensitive than Scenedsmus dimorphus to attack by the ethanolic extracts, while Mougeotia scalaris have more resistsnce to attack by the diethyl ether extracts followed by Microcystis flos- aquae, while Scenedsmus dimorphus have more sensitive to attack by diethyl ether extracts.

Population Growth and its Effect on Temperature Increase for Some Meteorological Stations in Iraq

Ahmed Ftah hasoon; Emad K.Rashed; Arkan Abdulla muzan

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 25-39

This research focuses on the effect of population increases ( in Baghdad , Nineveh, Basrah ) on ( maximum , minimum , and annual temperature averages ) this concerns the period from 1977- 2010 . Meterological Stations in these Provinces ( Baghdad airport , Mosul city , Basrah – Hussein Quarter ) have recorded an increase in urban warming – they reached 00.3C ، 0.5C0 ، 0.6C0 according to maximam temperature and 0.1C0 ،0C0 ،0.3C0 according to average annual temperature, associated with an increase in population. 4594161 , 1894940 , 1029869 . the location of Baghdad station as far from the city centre led to a less urban ratios in warming in comparison to other stations mentioned . on other hand geographic location of Mosul station ( higher than the see level ) led to a less ratios of warming compared to Basrah station , despite of the high – populated city of Nineveh .