Journal of Basrah Researches (Sciences)

We investigate the occurrence of various laser outputs from semiconductor laser ranging from the usual output obtained from such devices, periodic, multi-periodic, aperiodic and chaotic one as a result of the modulation of injection current .

The massive explosion in computer technology and communication has encouraged the development of steganography and watermarking, breathed the spirit of steganography, and made it the top security technique to protect and preserve the rights and privacy. So, steganography is one of the important types of information hiding techniques that has evolved a lot in the recent years. Most text steganographic methods take the formatted text documents, such as, MS Word, PDF, PPT …etc., as a cover to hide secret information. This study concerns the steganography in MS Excel document and proposes a new steganographic method for hiding information efficiently by Unicode system characteristics technique. In the Unicode standard, there are two different codes for seven numbers (0, 1, 2, 3, 7, 8, 9) in Arabic and Persian Language. The seven numbers of (0, 1, 2, 3, 7, 8, 9) have the same shape but different codes in Unicode table. As a result, we can hide information in MS Excel Document, by using one of these two codes.This proposed method has a high capacity. It can hide one bit in each number in the cover_file, and it is not make any apparent changes in the original text. So it satisfies perceptual transparency. In our method, we have increase the level of security by encrypting the secret message before embedding it by using Advanced Encryption Standard (AES-128) algorithm.

In this paper, a new technique is applied to develop the treatment of initial boundary value problems for one dimensional heat-like and wave-like partial differential equations [3] (ordinary or fractional) by mixed initial and boundary conditions together to obtain a new initial solution at every iteration using homotopy perturbation method (HPM). The structure of a new successive initial solutions can give a more accurate solution in a first step.

A field experiment was conducted to evaluate the effect of conventional tillage (CT), Reduced tillage (RT) and No-Tillage (NT) systems using three seeding rates (100, 120, and 140 kg ha-1) of two barley species Hordeum vulgare L. cultivars namely Arivat and IPA-99. The aim of the experiment was to develop management strategy for selecting tillage system, seeding rate, and cultivar to increase yield of barley under semi-arid conditions. The experiment was laid out in randomized complete block design with split-split plots arrangement having tillage systems as main plot, cultivars as sub plot and seed rates as sub-sub plot. CT and RT was more effective in enhancing tiller number, plant height, spike number, seed yield and biological yield as compared with NT. Tiller number, plant height, spike number, seed yield and biological yield for the highest seeding rate was 24.253, 5.285, 44.142, 31.108, and 9.128% respectively greater than for the lowest. IPA-99 cultivar had more tillers per unit area, spike number, seed yield, biological yield, harvest index and higher plants than Arivat cultivar. However, Arivat cultivar had higher kernel per spike and thousand kernel weight. Negative correlation coefficients were found between spikes number and kernels per spike of -0.691 and spikes number and kernels weight of -0.943. Applying seed rate of 140 kg ha-1 with IPA-99 cultivar under CT seems to the promising combination for semiarid barley.

Food allergies are important health problems. Since there are no previous studies to assess food allergies to beef in Iraq. So the aim of this study reveals food allergies by using immunological and genetic testing . Two hundred and sixty four sera from suspected meat allergic subjects were tested by in direct ELISA for specific IgE antibodies to beef .Polymerase chain reaction technique was performed to detect genetic relationship between food allergy and human leukocyte antigen classII allele(HLA -DQB1*0305). Depending on the ELISA seropositivity results, 13.3% of allergic patients were seropositve against beef allergens raw and cooked and the higher rate of seropositivity was observed in males (14.6%) and in 2nd age group patients (17.9 % ) in concern to sex and age effect on the seropositivity.There were non significant (p>0.05) variable values of optical density mean and standard deviation. The loss of beef allergy was not observed in all allergic patients and all of them showed the same positive raw and cooked beef specific IgE response .The results of PCR amplification showed successful binding between the specific primers of HLA- DQB1*0305 and the extracted DNA appeared as single band of expected size, 195bp . The positive specific IgE response to beef allergens was significantly associated with HLA DQB1*0305 .

Two hundred and sixty four sera from suspected meat allergic subjects were tested by ELISA specific IgE antibodies to beef and chicken meat respectively . The distribution of beef and chicken meat (raw and cooked) allergens was determined by indirect specific IgE based ELISA. The result of this test revealed that the overall rate (84.5%) of allergic patients were seropositive against all tested allergens .Depending on the seropositiveity against allergens as one type or in association (56.4% )of allergic patients were seropositive against associated beef and chicken meat (raw and cooked),while (14.8% and 13.3%) of them were seropositve against chicken (Ch1,Ch2) and beef (Rm1,Rm2) respectively . According to sex of allergic patients ,in the female the overall rate (85.1%) of seropositiveity against all tested allergens was slightly higher than that of males (83.9%).In concern to the effect of age on the seropositiveity , the highest overall rate (90.3%) was observed in allergic patients >40 years of age , followed by the rate (85.3%) of patients in the age group (>30-40).There was no significant effect (p>0.05) for the sex or age of allergic patients , on the specific IgE seropositiveity against the tested allergens .But the seropositiveity rate was significantly variable (p>0.05) in male and females within each age group .

The study was undertaken to investigjate the mycobiota of the 20 samples of dried vine fruits (Zibib) used for preparation of grape juice collected from local shops for soft drinks and fruit juices during August, 2010 and for natural contamination with aflatoxin G1.Aflatoxigenic strains of Aspergillus were detected by culture based methods , these include fluorescence upon exposure to UV long wave length (365 nm) light and pigment production in coconut agar medium after exposure to ammonium hydroxide . All tested of A.parasiticus showed aflatoxigenic potential and the ratio of aflatoxigenic isolates of A.flavus was higher than non aflatoxigenic strains. Natural contamination of grape juice with afflatoxin G1 was detected by LC/MS-MS technique. Out of 14 juice samples 7 were be found to contaminated with AFG1.

This study involves the preparation of three azodyes derived from 1-hydroxy- 2-naphthoic acid and sulfadiazine derivatives. The characterization of Dyes 4-(sulfadiazineazo)-1-hydroxy-2-naphthoic acid ( F1) ,4-(sulfamerazineazo)-1-hydroxy2-naphthoic acid (F2) and 4-(sulfamethazineazo)-1-hydroxy2-naphthoic acid ( F3) have been described by C.H.N. The I.R. and V. & UV. spectroscopic techniques were carried out . The acid-base properties were studied at different pH values and the dissociation and protonation constants of dyes were determined, as well as the solvents effect were studied at different solvents polarities

The shape effect of the surface density of state on the charge transfer in atom(ion)-surface scattering process is investigated in detail by formulating the configurations interaction (CI) method. The method is applied to the formation of exited silicon ion Si+* from the scattering of Si2+ from Si surface as we used as well the method to clarify the nonlinear behaviors of the H+ survival probability as a function of the scattering angle during its specular scattering from graphite (HOPG) surface.

The aim of this study was to optimize the cultural conditions for optimal fungal growth and metabolic bioactivity of Rhizoctonia solani isolated from potato tubers in Basra, Iraq. Different culture media, temperatures, pH and carbon and nitrogen sources were used to elucidate their effects on the fungal growth response and bioactivity of the fungal metabolite against two bacteria strains E. coli and S. aureus. R. solani grew better on Trypto Soyo broth medium at pH 6 and temperature 30 C. Starch (C- source) and NaNO3 (N-source) were most suitable for the fungus growth. Highest dry weight of fungal crude extract was obtained by using TS broth medium at pH 6 and incubation temperature 30 C. A disc diffusion technique was applied to examine the bioactivity of fungal crude extract against two strains of bacteria E. coli and S. aureus. The fungus exhibited higher antibacterial metabolic bioactivity (30 mm and 34 mm inhibition zones diam) against E. coli and S. aureus, respectively, by using TS broth medium amended with starch and (NH4)2SO3 at pH 6 and 25 C temperature.

Gamma rays effect has been worked out on polyvinyl chloride and CN-85, this effect has been found out and compared together, by using optical density technique, this work for this polyvinyl chloride, has been done for the first time.Polyvinyl chloride used in this work shows more response and more linearity than CN-85, in response to gamma photons within the dose range between 679mGy and 13582mGy.

concentration of Boron is assess in water samples which are taken from different Regions in Basrah City. A technical method has used in two sets of experimental works in the measurements of Boron concentrations in water. The first measurement by using Curcumin method and the second is the passive method by using the solid state nuclear track detectors,CR39. Tap water in the governorate, has a very low Boron concentration 0.539 ppm at Al-Bedeah river. Shatt Al-Arab Al-Jzeera AlOula did show a Boron level as high as 7.405 ppm at east governorate, waters have Boron level ranging between 7.785mg/l and 0.638 mg/l in curcumin method. A conclusion has been made, that Basrah governorate tap water is safe as far as Boron concentration is concerned, while the rivers waters should be avoided. The high concentration tells us that pollutant in this part of the city is larger than the other parts. Samples of water were collected during February 2012, from all the locations in Basrah City.

The aim of this study is to determine radon concentration in local fish in Basra (Iraq) and imported fish. The passive radon method employed has been achieved by means of cylindrical time integrated technique of Solid State Nuclear Track Detectors (SSNTDs). The obtained radon concentration ranged from (309.4 Bq/m3) to (1600 Bq/m3) in local fish and from (507.3 Bq/m3) to (1100 Bq/m3) in imported fish. From the measurements all of the fish measured were within permissible level recommended by ICRP(1987 ) for foods [12]. This study gives us data base about the concentration of radon in fish found in Basra fish markets, and compares this data with radon data in vegetable of Basra markets.

This paper describes the influences of the centres in (1+1) dimensional external trapping potential which are usually used in the experiment that leads to produce Bose-Einstein condensation BEC in ultra cold gases. Two mixed types of trapping potential are used in this analysis, the first one is a harmonic oscillator potential HOP which is applied along the Y-axis, and the second is a double well potential DWP which is applied along the X-axis. The results show that the value of a, in DWP formula have a major effects on the potential in terms of shape and value.