Study of joints system at Skhaba dam region

Joints study in Skhaba region shows the existence two joint directions, principal dominant NW-SE Joints from extension origin upper Cretaceous age, unrelated and older than faults in studied area statistically, the presence of Calcareous filling in the joints that is supported the extension origin in the first phase. Secondary NE-SW joints from Miocen-Pliocen in age, and from extension origin ,related to the formation of faults, most of them contain thin iron crust in secondary phase.

Evaluate the effectiveness of the use of cheek Flap in the closure of the vestibular oro-nasal fistulas and alveolar clefts

vestibular oro-nasal fistulas and alveolar clefts associate with cleft lip and palate. Sliding flaps are the most used flaps and often the sole method for closure of vestibular oro-nasal fistulas and alveolar clefts. cheek flap can be used instead of Sliding flaps.

Study of fracture system in southern coastal range (Al-Qdmous and Safita regions)

The study of fracture in Kadmous and Safita showed several fracturing directions, originally related to the tectonic structure of the studied zone, especially faults. A group of dominant principal fractures, with a direction of NW-SE, a group of less importance with direction of NE-SW, and a secondary group of N-S direction, have been determined.

Effect of fissure morphology on the in vitro microleakage and penetrability of pit and fissure sealants in upper premolars

The aim of this in vitro study was to determine the effect of fissure types on the microleakage, and penetration ability of fissure sealant. The occlusal surface of ninety caries-free extracted human upper premolars were cleaned, etched and sealed with (UltraSeal XT Plus) Sealant. The sealed teeth were thermocycled then coated with two layers of nail varnish, leaving exposed a 1 mm window around the sealant margins and then immersed in 1% methylene blue for 24 hours. Each tooth was sectioned bucco-lingually and examined with a stereo microscope (40x magnification) for fissure types, microleakage, and penetration ability.

Study of Joints arround 16 Tishreen lake dam region in ALKabir ALShimali river basin

The statistical Study of Jointsarround 16 Tishreen lake dame region in ALKabir ALShimali river basin showed the presence of several main groups of Joints with directions NE-SW _ NNE-SSW, NW-SE, E-W. - Group NE-SW: showed correspond to with the fault structures of same directions which are normal and reversal faults and distributing geographically 1n Lattakia Kallas fault zone. Also it showes correspond to with the axis of folds of same direction, thus explained as longitudinal joints within these folds - Group NW-SE: showed correspond to with faults structures of same direction. which are left and right lateral strike slip faults, Spread over the entire study area. and it may(diagonal)shear group within the folds of NE-SW axes. - Group E-W:correspond to with normal faults structures.

Study of the properties of the Joints in the central part of the AL-Kabir AL Shimali River basin

Study of the general characteristics of Fractures in the central part of the AL-Kabir AL- Shimali river basin showed the presence of several main groups of Fractures with directions NE-SW _ NNESSW, NW-SE , E-W.and showed increased fracture rate in the northern and southern parts of the study area, and that the spacing between the Fractures close to the medium convergence (5-34) cm , also show a aperture ranged between (0.1-5.1) cm, where aperture width was increased in southwest of Lake 16 October near Lattakia- Kless fault .

The use of sonic method in the detection of petroleum reservoirs in Syrian oilfields ( Jubiseh)

The use of sonic method to detect reservoirs with secondary porosity (fissures and cavities) was due to the high effect of this porosity on the elastic waves. The generalization of the experimental results helped to construct a diagram to be used in detecting reservoirs with secondary porosity in the wells. A joint analysis of the data of the sonic method and other well logging methods, such as boreborehole diameter log, natural radioactivity log, natural log and micro and deep resistivity log...etc, was achieved. The wave spectrum was analysed for a relatively long period so that it included Lambi waves. The detection of these reservoirs was achieved by using the correlation between all available results, which led to the determination of the presence of the secondary porosity and the suggestion of a new calculation method. In addition to the secondary porosity some other factors which affect the sonic measurements were mentioned.