Journal of Basrah Researches (Sciences)

The structure and monopole transitions of sum neutron rich deformed Hf isotopes have been studied within the framework of the interacting boson model. The level structure for two selected isotopes Hf176-178 and B(E2), ρ(E0) and the X(E0/E2) ratios have been calculated. The numerical results obtained have been compared with experimental data. Satisfactory results for comparison were obtained.

Copper complexes of N- hydroxyiminodiacetic acid and N-hydroxy- α ,α/-iminodipropionic acid have been prepared . These complexes have been studied using electron spin resonance and UV.spectroscopic techniques. The electron spin resonance spectra of these complexes have been measured in solution at room temperature and 77K. The spin Hamiltonian parameters have been computed to the atomic orbital coefficients in some of the moleculer orbitals involved in bonding in these complexes. The unpaired electron is in an antibonding orbital ψ(B1g¬) compounded of the cupric ion dx2 –y2 orbital and oxygen σ- orbital

Three boreholes were chosen, these boreholes were and distributed around Basrah region southern part of Mesopotamian plain. The depth of there boreholes ranged between 27 and 30 meters. Faunal assemblages have been identified. Two biofacies and one lithofacies have been identified; from top to bottom, biofacies A as a surface layer in the southern extremity of Mesopotamian plain. It could reflect a local transgressive period. Biofacies B underlied the first biofacies, it covers the southern part of Mesopotamian plain, this facies could indicate a subsidence period and let the environment to be isolated marked by reduction associated with pyritization. The lithofacies C underlied the second biofacies, it is observed in the southern part of Mesopotamian plain. The funa was completely absent in this biofacies and combined with the presence of gypsum grains, which means that the evaporation was high. The vertical and lateral distribution of these biofacies could be highly attributed to tectonic events in this study area.

In recent years, there has been a resurgence in research on neural netwoks in natural language processing. These research employ learning techniques to automatically extract linguistic knowledge from natural language rather then require the system developer to manually encode the requisite knowledge.It is known that the biological brain contains various topographically ordered 'maps', such that different neural cells respond optimally to different signal qualities.In this paper, self-organizing map are used for linguistic representation. The performance of the system is shown for small arabic vocabulary. It constructs an optimal topographical mapping of the words in the arabic sentences which gives high accuracy in language understanding.

A hybrid system for image compression that combines both the run length encoding (RLE) method and neural network is proposed. This system is used to compress the image efficiently. The RLE method is used to compress the image and the neural network compress it again. An example is given to show the effectiveness of the proposed approach.

A total of seven hundred and fifty of fecal samples were collected and examined for intestinal parasites in Basrah city during the period from July 1998 to June 1999. Six hundred and fifty specimen were collected from children admitted in Basrah Hospital for Birth and Child with or without diarrhea symptomes and one hundred from children outside the hospital.The highest percentage of infection was recorded in March (90%) and the lowest in January (11.7%). It was found that the percentage infection in female was (52.4%) while in male (51.2%), Moreover, the total percentage of infection with protozoa was (42.1%) and of helminths was (7.7%).

The nonlinear dynamical features of the Lorenz model of atmospheric circulation are investigated. It is found that, the Lorenz model is well suited to examine the theoretical predications of the atmospheric circulation system over a wide range of control parameters. The results show that, this system is capable of displaying various types of dynamical behaviors (instabilities) such as period-doubling sequences and self-pulsing instability leads to chaotic behavior under certain conditions.

Nine new aldonitrons containing 1,3,4 – thiadizole ring were prepared and characterized by using different spectroscopic methods . Then a cyclic addition reaction with acetylene dicarboxylic acid for nine nitrones was carried out .Only one reaction was succeeded to give the 1,3 –dipolar cyclic addition producing 3- (4 – chloro phenyl (5 – thio – 1,3,4 – thiodizoyl)- 4,5 – dicarboxyl – isoxazoline .