Paragraph 1 Perovskite‚ with a general formula of ABO3‚ has a structure comparable to that of ReO3. What differentiates them is the fact that ReO3 lacks the cation A at its unit cell centres. An octahedron made up of six oxygen atoms encompasses each rhenium atom‚ and it forms the 3-dimensional structure by connecting its corners with other octahedral. At low temperatures and a pressure of about 3kbar‚ the Fermi-surface cross sections undergo nonlinear patterns. ReO3 thus undergoes phase transitions
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ANALYTICAL STUDY OF PAINT LAYER IN MURAL PAINTING OF KRABIA SCHOOL (19th c.)‚ CAIRO‚ EGYPT Nabil A. Bader1 & Waeel‚ B. Rashedy2 1 Conservation Department‚ Faculty of Archaeology‚ South Valley University‚ Qena‚ Egypt. 2 Islamic Department‚ Faculty of Archaeology‚ South Valley University‚ Qena‚ Egypt. Received: 21/07/2014 Accepted: 12/08/2014 Corresponding author: Nabil Bader (drnabil_bader@yahoo.com) ABSTRACT Krabia School was decorated with wall paintings which were applied at ceiling and walls of
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The second type of measurement that coincides with distance is speed. The most common devices that are used to receive speed measurements are radar guns. Georgia State University’s website‚ “Police Radar” focusses on the process of typical radar guns. Typical guns expel microwave waves off to the atmosphere while the gun is directed to hit towards a target From there‚ an object moving by who hits it sends the waves back with its modified frequency caused by the Doppler Effect (Georgia State University
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(Table 2). The deposition time for all samples was about 90 minutes. Figure 1. Schematic diagram of the magnetron sputtering system A TE-SCAN MIRA3 field emission scanning electron microscopy (FESEM) was applied to characterize films. An X-ray diffraction (XRD) was utilized using a Philips X’Pert MPD system to study the structure of the deposited film. The films adhesion was measured through a micro scratch test using a Rockwell C diamond indenter with the tip angle of 120˚ and 200 µm radius. Applied
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models only through metaphors for interpreting the data." He also says that "Molecular models are metaphors because they represent a mapping from the domain of pictorial or three-dimensional model representation onto the domain of data from X ray diffraction and other experimental
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Fast dissolving oral film‚a new kind of drug delivery system‚ is a stamp-style drug loaded polymer film with rapid disintegration and dissolution in the saliva ‚self‑administration without water or chewing. It offers higher compliance against swallowing difficulty of conventional solid dosage form‚especially suitable for patients who have fear of choking such as pediatric and geriatric patients. However‚fast dissolving oral film is not suitable for poorly soluble drug because of the grittiness taste
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Paragraph 1 FePO4 is distinct from other α-quartz isotypes because its A cation is a transition metal. It is studied at different temperature ranged from 294K to 1073K by neutron powder diffraction. At relatively low temperature‚ it adopts the structure of α-quartz‚ which is tetrahedral and shown below. At high pressures‚ a phase change occurs to a more dense octahedral structure‚ which is known as β-phase. The transition temperature is 980K. During the first-order transition‚ discontinuities
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Stealth technology Stealth technology also termed LO technology (low observable technology) is a sub-discipline of military tactics and passive electronic countermeasures‚ which cover a range of techniques used with personnel‚ aircraft‚ ships‚ submarines‚ missiles and satellites to make them less visible (ideally invisible) to radar‚ infrared‚ sonar and other detection methods. It corresponds to camouflage for these parts of the electromagnetic spectrum. Designers develop a particular shape
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A force can do one of four things to an object: 1. Make it speed up - accelerate. 2. Make it slow down - decelerate. 3. Change its direction. 4. Change its shape. If something is doing one of these four things there must be net force acting upon it. Newton’s First Law ’Every body continues in a state of rest or uniform motion unless acted upon by an external force.’ Something without net force acting on it will either stay still or move at a constant speed in a straight line until
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source of chitosan. The water binding capacity (500%) and fat binding capacity (396%) of prepared chitosan are good agreement with the commercial chitosan. FT-IR spectra gave characteristics bands of –NH2 at 3431cm-1 and carbonyl at 1661cm-1. X-ray diffraction (XRD) patterns also indicated two characteristics crystalline peaks approximately at 10° and 20° (2θ).The surface morphology was examined using scanning electron microscopy (SEM). 4|Page Preparation of Chitosan from Jazan Area Shrimp wastes
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