The dissolution of the drug in different liquisolid formulations was performed in 500 ml simulated salivary fluid (phosphate buffer pH 6.8) maintained at 37 ± 0.5 ºC using the USP dissolution tester apparatus II‚ at a rotation speed of 50 rpm. Aliquots from the dissolution medium were withdrawn at 1‚ 2‚ 3‚ 4‚ 5‚ 6‚ 7‚ 8‚ 9‚ 10‚ 12.5‚ 15‚ 20‚ 25 and 30 minutes time intervals. The samples were changed with fresh dissolution medium of same amount to maintain a constant volume in the vessels. Samples
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the use of scanning electron microscopy which produces high resolution‚ 3-D images‚ it can be seen that Lindow Man had a short trimmed moustache and beard and his stomach contents were also revealed. In his stomach it revealed that he had bran and wheat and plenty of other nourishable foods which indicate to the archaeologists and scientists that Lindow Man was not poor and was possibly from the middle to upper class. Another scientific technique that was used was the use of electron spin resonance
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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 and Investigation of Its Properties KEY WORDS 5|Page Preparation of Chitosan from Jazan Area Shrimp wastes and Investigation of Its Properties Key Words:
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Stream- Line imaging‚ available on inVia Raman microscopes‚ was applied to scan several areas on the painted surface in few minutes. Spectral acquisition was performed by (WiRETM‚ version 3.0) software. StreamLine Plus uses optics within the InVia Raman microscope to illuminate a line on the sample. The In- Via’s motorized microscope stage moves the sample be- neath the objective lens so that the line is rastered across the region of interest
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film. Large-area SiNWs with average diameters of 20 nm down to 8 nm and wire densities as high as 1010 wires/cm2 were accomplished. These SiNWs were single crystalline and vertically aligned to the (100) substrate. It was revealed by transmission electron microscopy that the SiNWs were of high crystalline quality and showed a smooth surface. In recent years silicon nanowires (SiNWs) have attracted much attention1‚2 due to their many unique properties and potential applications as building blocks
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2.3. Characterization 2.3.1. FT-IR spectra The IR spectra of different powder were recorded using FT-IR Spectrometer‚ Spectrum RX1‚ USA. The samples were prepared in the pellet form by pressing their mixed powder with KBr by the ratio 1:10 in the Perkin Elmer hydraulic device. 2.3.2. UV-Vis absorption spectra measurement UV-Vis spectra were recorded in N‚ N-Dimethylformamide (DMF) in the range 200-800 nm. All the UV-vis measurements were accomplished by a Shimadzu PC3101 spectrophotometer‚ under
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outstanding and best preserved of the decorated chapels are named ‘Chapel of the Exodus’ and ‘Chapel of Peace’. Raman spectra were recorded in the near infra red excitation line (785 nm) using a Renishaw InVia Raman spectrometer. A Leica polarized microscope
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Microscope Microscopes are instruments that produce a magnified image of a small object. They are used in many scientific and industrial applications. Some common applications for microscopes include manufacturing inspection and high-technology quality control. Specific quality control applications for microscopes include semiconductor processing‚ medical imaging‚ cell research‚ and metallurgical analysis. Microscopes are supplied in one of three common configurations‚ student‚ benchtop‚ and research
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3. RESULTS AND DISCUSSION 3.1. Powder X-Ray diffraction analysis The grown Cd doped LSMH crystal were subjected to powder X-ray diffraction studies using a Rich Seifert X-ray diffractometer employing CuKα (1.54058 Å) radiation‚ scanning angle ranging from 10° to 70° at a scan rate 1°/min to confirm the crystalline phase of the grown crystal. Fig 2 shows the X-ray powder diffraction patterns of pure as well as Cd doped LSMH single crystals. The obtained (h k l) values are indexed using the JCPDS
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Module Twelve: Text Questions Review Questions 1. What is a comparison microscope? What are the advantages of this microscope? A comparison microscope is a microscope that has 2 lenses that can magnify up to 1‚5oox. An advantage is that it able to magnify items more than regular comon microscopes. 2. What are the three substances that generally make up paint? Describe each part. Pigments- organic and nonorganic compounds & materials added to paint to produce a color. Binders-
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