Journal of Techniques

This research tries to define the concept of the lean manufacturing and its tools. Also is aiming to determine the possibility of applying the tools of the lean manufacturing system in Mosul Dairy Factory. The research is choosing the Mosul Dairy Factory as a study field to support the nation products in the country. It is important for other factories to look at the benefits of this system and apply it to avoid the wasting in the manufacturing and use the available energy. This will help the factories to compete with the imported products from aspects، which are the production cost and the quality. The assumption of the research has been tested by using the ways of the statistics and by using (SPSS). Also، it is been employed filed survey as a main tool to gather data and information from the study sample. Researcher reached a number of conclusions، the most important of which was the availability of the tools of the lean manufacturing in the Mosul Dairy Factory. All the lean manufacturing tools is varying، which means there is a way to apply them in the study sample. Based on the conclusions of the research many recommendations have been submitted to Mosul Dairy Factory.

This research aims to study the expected role of organizational culture between the servant leadership in its dimensions (support and support of employees, forgiveness, and originality) and the performance of workers in whether it is a moderating role that modifies the strength and direction of the relationship between the independent variable and the dependent variable or just a mechanism to transfer the effect of the independent variable on the dependent variable this is called the mediating role. The targeted research sample was represented by the employees working in Al-Zawraa Public Company and the research sample reached (76) individuals of different job levels. For the purpose of collecting data for conducting statistical analyzes, the research relied on the questionnaire as a main tool, as (100) questionnaires were distributed to the employees of Al Zawraa Public Company, Al-Mansour site, Gas Department Medical and industrial. The number of retrieved questionnaires was (79), and valid for statistical analysis was (76). The data were analyzed using (AMOS) version 23 program. To achieve the research objectives, many statistical methods were used, represented by (the arithmetic mean, standard deviation, coefficient of variation, Pearson correlation coefficient and multiple linear regression). This research reached a set of conclusions, perhaps the most important of which is inferring the fact that organizational culture plays an interactive role and an intermediate role in the relationship between servant leadership and the performance of employees.

A study of new Track of Fatigue crack growth in aluminum alloy (2219) under cyclic stresses has been made. It was found out that this crack grow and propagate in three phases, the first phase though the grain size (micro-structure short cracks(MSC)), second phase cross the boundary of the grain size to about 1mm in length (physically short cracks (PSC)) and the third phase up to the final fracture (Length cracks(LC)). In addition, two programs were designed on MATLAB to perform the compute calculations to collect the results. The first program to calculate the practical constants and the second to make the calculations required to complete the work schedules. The stress and the parameters effecting the growth of these cracks in each phase were studied. A model consisting of three formulas was established from the experimental results. Each formula describes the behavior of the cracks in the particular phase. The comparison showed that the proposed model is safer than the experimental results for the designed parts of aircraft.

Multiple sclerosis (MS) is a recent prevalent central nervous system disease that affects the brain and spinal cord. It is assumed that it is an intermediate immune disorder in the central nervous system and is complex with incomplete etiology. Some research have confirmed that the Opioid growth factor(OGF), which was called chemically Enkephalin [Met5], is considered as a biomarker for the onset of MS. The purpose of this study was to look into the biomarker level of OGF and its correlation with body mass index(BMI) among patients with MS. A total number of 100 patients were diagnosed in two groups (54 early diagnosis of MS without treatment, 46 early diagnosis with treatment) according to McDonald criteria and 50 healthy control groups were included. All demographic data of the study samples were recorded (age, gender), as well as clinical data such as (BMI),and level OGF(serum and saliva) estimated by ELISA method. The current study revealed that the mean+SD of serum OGF in patients with multiple sclerosis for both groups(947.167 ± 134.262 ng/ml) was less concentrated than the control group (1046.642 ± 63.605 ng/ml) with a very large difference (P <0.01). While the mean concentration of OGF in saliva was (960.158 ± 91.684 ng/ml) for patients with multiple sclerosis (early diagnosis group without treatment and the treatment group), its concentration was higher than the control group (880.059 ± 87.700 ng/ml) with a large statistical significance (P <0.01). The current study showed an important correlation between the body mass index and serum OGF level at (p = 0.022) in the early diagnosis group for multiple sclerosis patients with treatment, , while in the early diagnosis group for multiple sclerosis patients without treatment, a very significant association was found between BMI and serum OGF level at (p = 0.009). Interestingly, the current study showed that saliva biomarker (OGF) would be a good predictor for diagnosing MS.