Three composite grinding wheel series were prepared using three different ceramic binders . Two of the three series behaved in typical ceramic — type manner in their consolidation behaviour , while the third deviated strongly . The measured mechanical properties behaved in a similar manner . The main reason was found tobe the way the binder material interacts with the SiC — particles . The results are discussed in terms of the rol played by the binder in shaping the final mechanical properties of the composites .
Mineral filler is one of important materials and affecting on properties and quality of asphalt mixtures .There are different types of mineral filler depended on cost and quality , the matter encourages us to achieve this study to evaluate hydrated lime filler effects on properties of asphalt mixes related with strength and durability. Conventional asphaltic concrete mixtures with Portland cement and soft sandstone fillers and mixtures modified with hydrated lime were evaluated for their fundamental engineering properties as defined by Marshall properties , index of retained strength , indirect tensile strength , permanent deformation characteristics , and fatigue resistance .A typical dense graded mixture employed in construction
... Show MoreThis research aimed to use eggshell powder as a lithtripsian for different types of urinary stones and determine the efficiency of these preparations against different types of stone. The grounded and sterilized eggshell was dissolved in fresh lemon juice .The treatment was orally given for successive 7 days before breakfast. Eighty five patients with different types of urinary stone were participated in this research. All patients were subjected to Ultrasonography and intravenous pyelography examinations to localize the position and detect diameter of the stone. The above examination and also biochemical tests for diagnosis of stones in
... Show MoreIn this study, radon concentrations were measured in dwellings at specified locations in Baghdad city using ionization chamber radon monitor (ALPHA GUARD PQ2000 PRO). The measurements were carried out at different locations of these dwellings (living rooms, bed rooms, bath rooms, and kitchens). The results of the survey showed that the overall minimum, maximum average and mean average radon concentrations in dwellings were 5.77±0.73 Bq/m3, 23.27±13.57 Bq/m3, and 10.67±4.14 Bq/m3 respectively. The lowest average radon was found in (Ameryia) city, while the highest average radon concentration was found in (Kadmiya) city. Also, the results showed that the highest average radon concentration was found in the kitchens, while the lowest ave
... Show MoreIn this paper, the conditions of occurrence of the local bifurcation (such as saddle-node, transcritical and pitchfork) near each of the equilibrium points of a mathematical model consists from four-species Syn- Ecosymbiosis are established.
Recently, biometric technologies are used widely due to their improved security that decreases cases of deception and theft. The biometric technologies use physical features and characters in the identification of individuals. The most common biometric technologies are: Iris, voice, fingerprint, handwriting and hand print. In this paper, two biometric recognition technologies are analyzed and compared, which are the iris and sound recognition techniques. The iris recognition technique recognizes persons by analyzing the main patterns in the iris structure, while the sound recognition technique identifies individuals depending on their unique voice characteristics or as called voice print. The comparison results show that the resul
... Show MoreA snake is an energy-minimizing spline guided by external
constraint forces and influenced by image forces that pull it toward features such as lines and edges. Snakes are active contour models: they lock onto nearby edges, localizing them accurately. Snakes provide a unified account of a number of visual problems, including detection of edges, lines, and motion tracking. We have used snakes successfully for segmentation, in which user-imposed constraint forces guide the snake near features of interest (anatomical structures). Magnetic Resonance Image (MRI) data set and Ultrasound images are used for our experiments.
... Show More A series of N- benzoyl - 2 – alkyl -1- ( 2- thio – 1,3,4- thiadiazole -5- yl ) , have been synthesized from DL- α– amino acids , The methyl and sulfon thio ethers of these compounds were also prepared , representative samples of the prepared compounds were characterized from their IR- spectrum and elemental analysis .
Background: Echinococcosis is a zoonotic disease with high incidence.
When a person responds to the temptation of Satan and changes his sex from male to female or vice versa, it will be terrible, He is neither male nor female; Because this change will be apparent only and will not affect the person,
This change if it occurs has implications impaction Bor personal status issues.