In the present study a series of some four-,five-and seven-membered heterocyclic compounds have been synthesized by the reaetion of Schiff bases (1a,b) with chloroacetyl chloride, sodium azide, thioglycolic acid or various anhydrides to give azetidinone (2a,b), tetrazole (3a,b), thiazolidinone (4a,b) and 1,3-oxazepine derivatives (5-8a,b) respectively. Schiff bases (1a,b)were prepared from the reaction of p-toluidine with aromatic aldehydes. All synthesized compounds were characterized by physical properties and spectral data.
This thesis study (pen weight and diversity of Arabic calligraphy), including the Arabic script went through multiple bodies, it came through the natural evolution of societies, and helped in the renovation and development of calligraphy after they gained a clear identity as a result of development that has occurred in the materials and writing instruments, especially industry pen that led to the diversity of Arabic calligraphy, and through the exploratory research and modeling study, which was obtained that the researcher could pose a problem discussed in the first chapter of his study follows by asking: is the pen is the weight of the role in the diversity of Arabic calligrap
... Show MoreIraq has a range of small and large marshes, which can be divided into two groups, a group of marshes feeding water from the Tigris and Euphrates rivers, and a group of marshes fed by the seasonal valleys coming from the desert plateau and the aljazera plateau.
The marshes have go through major changes, some of them turning into industrial lakes to store the flood waters of the Tigris and Euphrates rivers. Others have been dried up and turned into agricultural land. Others have dried up and the water has been returned to them in less quantities than before.
The purpose of this research is to but light on the changes that have occurred in these marshes, with the mention of marshes turned into industrial lakes or agricultur
... Show MoreLogic is understood so far as a product perspective, either formal or informal. The topic is still, though interesting, imprecise, sketchy and problematic. Besides, the relevance of logic to linguistics has not been explained. This research focuses on dealing with logic as a product and a process. It introduces how logic is relevant to understanding language. Logic is surely not irrelevant to real human language. In this research, we coin 'logical pragmatics' to refer to "the structure of an argumentation and its parts used by the speaker for the purpose of persuasion to have an effect in the addressee and passive audience”. As such, the research mainly aims at providing a definition of "logical pragmatics" as well as developing an ide
... Show MoreThe present study aimed to explore the antibacterial and antibiofilm activity of flaxseed oil on some locally isolated bacterial pathogens. No inhibitory effect was noticed against Escherichia coli or Enterococcus faecalis. However, variable effects were developed against Methicillin resistant Staphylococcus aureus (MRSA), methicillin sensitive Staphylococcus aureus (MSSA), Klebsiella pneuminae and Staphylococcus epidermidis. The flaxseed exhibited antibiofilm activity against all tested bacterial isolates (MSSA, MRSA, S. epidermidis and K. pneumoniae) and showed various degrees of inhibition against them. Experimental wounds were healed by application of flaxseed oil. In conclusion, flaxseed oil is a good alternative medication can be u
... Show MoreBackground: Cutaneous leishmaniasis is an endemic protozoal disease in Iraq. Recovery from the disease confers a solid and permanent immunity. Vaccination with a living inoculum of promastigotes isolated from culture reduce the incidence of disease.
Objective: To show the efficacy of different types of antigens for protection of Balb/c mice against cutaneous leishmaniasis.
Methods: Thirty Balb Ic mice were divided in to six groups, groups 1-4 were immunized with different types of antigens (heat killed, freezing-thawing, formalin fixed and ultrasonicated). Received June 2005 Group 5 was treated with freshly harvested viable promastigotes from liquid medium as positive Accepted Nov. 2005 control and group 6 was kept as negative con
In this paper we describe several different training algorithms for feed forward neural networks(FFNN). In all of these algorithms we use the gradient of the performance function, energy function, to determine how to adjust the weights such that the performance function is minimized, where the back propagation algorithm has been used to increase the speed of training. The above algorithms have a variety of different computation and thus different type of form of search direction and storage requirements, however non of the above algorithms has a global properties which suited to all problems.
The thermoelectric power (S) of thermal evaporated a-InAs films
were measured in the temperature rang (303-408) K.
These films were prepared at different thickness (250,350,450) nm and treated at different annealing temperatures (303,373,423,473,523) K.
The behaviour of the thermoelectric power studies of these films
as a function of thickness and annealing temperature showed the thermoelectric power an increasing trend with annealing temperature
,whereas it decreases as the film thickness increases.
Background: Free radicals have been implicated in many pathological processes, including ischemia, inflammation, and malignancy. The free radicals may affect tissues damage by lipid
peroxidation which generate malondialdehyde (MDA) as a by byproduct of the reaction. The objective of this study is to examine the dynamics of lipid peroxidation in patients with
thyroid disorders using the measurement of malondialdehyde level as a marker for the degree of thyroid disorder.
Methods: Two hundred and forty five subjects were enrolled in this study. Hundred and ninety five were patients with different thyroid disorders (88 yperthyroidism, 63 hypothyroidism and 44 thyroid carcinoma) the remaining 50 subjects were
BACKGROUND: Iraq had more than twenty-four millions inhabitants of populations. This nation is one of the most populated countries in the world. It is difficult to define Iraqi populations genetically (HLA polymorphism) because they are structured of a mixture of many groups. HLA phenotype frequencies that encoded by many closely linked genes that are responsible for a variety of cell surface alloantigen proteins that are responsible for differences in different ethnic groups. Arab Christians in Iraq, accounting for more than three millions inhabitant mostly the northwest and other parts of Iraq. This raised the need for a preliminary study of the HLA trend in this population. Aim of study:
1- Estimating the gene frequency of HLA clas