this paper aims to assess the quality and accuracy aster dems and the arcgis alogorthms used for hydrologic analyses. to this end, first the plan of drainage networks in the region was extracted from aerial photographs and high resolution satellite images and was set as the real ground. in the next step, using the hydrology tool in arcgis software, raster networks of the region for the whole ca...

The title compound, C(28)H(16)N(2)O(5), is a bis-imide derivative in which two phthalimide units are linked by an oxydi-p-phenyl-ene bridge. The dihedral angle between the planes of the two central benzene rings is 86.1 (4)°. The isoindole groups make dihedral angles of 46.0 (14) and 77.5 (13)° with the attached benzene rings. Inter-molecular C-H⋯O hydrogen bonds contribute to the stability of ...

This paper describes a method of performance evaluation and remaining life prediction for an aged reinforced concrete (RC) T-girder bridge by J-BMS RC version via close visual inspection data, and also verifies the assessment results obtained as outputs from the Bridge Rating Expert System (RC-BREX) which is a subsystem of the J-BMS, to evaluate the effectiveness of the system. The Bridge Manag...

a new fixed-partial denture design using laminates is described for the replacement of a missing anterior tooth. in this article advantages, disadvantages, indications and contraindications of the new design have been discussed. this method is best suited for cases with missing incisors and esthetically compromised abutment teeth.

As three-chip hybrids, the amplifiers have from the start been designed to solve economically the problems that up to now have limited the use of off-the-shelf units. Key to keeping costs down is a capacitive-coupling approach to isolation. Any amplifiers so far available with the same capabilities are costly, enlisting magnetic or optical techniques to bridge the high-voltage barrier. Whether ...

The title mol-ecule, C(14)H(10)Cl(4)Se, features a selenide bridge between two dichloro-benzyl units. The dihedral angle between the two benzene rings is 107.9 (16)°. In the crystal, weak π-π face-to-face aromatic inter-actions are observed [centroid-centroid distance between two adjacent (but crystallographically different) phenyl rings = 3.885 (5) Å], providing some packing stability. Short C...

Wireless sensors and sensor networks are emerging as substitutes for traditional structural monitoring systems. Their benefit lies in a lower cost of installation because extensive wiring is no longer required between sensors and the data acquisition system. Studies carried out to evaluate performance of wireless strain measurement units are described in this paper. An example is given of a wir...

OBJECTIVE To compare post-operative outcomes between tubeless and conventional large-bore nephrostomy tube drainage following percutaneous nephrolithotomy in children. METHODS The study comprised 54 patients under 14 years of age who were undergoing percutaneous nephrolithotomy at 60 renal units and met the inclusion criteria. They were randomised to placement of a 16F nephrostomy tube (Group...