immobilized covalently on iron oxide magnetic nanoparticles. The synthesis of magnetic nanoparticles was done by the coprecipitation conventional method. The chemical composition and particle size of the synthesized particles was confirmed via X-ray diffraction. Tyrosine‚ Lucien and chitosan and glutaraldehyde were investigated to make a covalent binding between the iron oxide magnetic core and the immobilized enzyme. Immobilization using chitosan and glutaraldehyde show the best result. Finally the immobilization
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X-ray diffraction has perhaps been one of the most critical and exigent discoveries of the 20th century. Early X-ray diffraction images for tobacco mosaic virus had been collected before World War II. By 1954‚ Watson had discovered from his X-ray diffraction images that the tobacco mosaic virus had a helical structure‚ and was able to apply this to his famous DNA structure research. It is so valued because it allows the structure of a crystalline material can be determined‚ based on the diffraction
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be scattered by the electron cloud of an atom of 10 10 ) to b tt d b th l t l d f t f comparable size. Based on the diffraction pattern obtained from X-ray scattering off the periodic assembly of molecules or atoms in the crystal‚ the electron density can be reconstructed. Additional phase information must be extracted either from the diffraction data or from supplementing diffraction experiments to complete the reconstruction (the p phase problem in crystallography). A model is then progressively
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Interference and Diffraction EX-5545 Page 1 of 8 Interference and Diffraction of Light Equipment: 1 1 1 1 1 1 1 1 1 INCLUDED: Basic Optics Track‚ 1.2 m High Precision Diffraction Slits Basic Optics Diode Laser Aperture Bracket Linear Translator High Sensitivity Light Sensor Rotary Motion Sensor 850 Universal Interface PASCO Capstone OS-8508 OS-8453 OS-8525A OS-8534B OS-8535 PS-2176 PS-2120 UI-5000 UI-5400 Introduction: The interference maxima for double slits is measured by scanning the
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Namee: Paul G. Zamora (Homework in Performance Techniques) Sound Waves- A sound wave is the pattern of disturbance caused by the movement of energy traveling through a medium (such as air‚ water‚ or any other liquid or solid matter) as it propagates away from the source of the sound. The source is some object that causes a vibration‚ such as a ringing telephone‚ or a person’s vocal chords. The vibration disturbs the particles in the surrounding medium; those particles disturb those next to them
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directions lying in this plane and give their Miller indices. You should specify a positive sense on your direction with help of an arrow and make your Miller indices consistent with that direction. 12 3 First three peaks in a powder x-ray diffraction pattern from a cubic crystal appears at Bragg angle =13.63‚ 22.63 and 26.82 when CuK radiation with a wavelength of 1.54 Å is used. Determine the structure and lattice parameter of the material. 12 4 Iron changes from a low temperature
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noncrystalline solid which their components not organized in lattice pattern. • Such as glass‚ plastic‚ gel Question 1. X rays from a copper X-ray tube (λ = 154) were diffracted at an angle of 14.22 degrees by a crystal of silicon. Assuming firstorder diffraction (n= 1 in the Bragg equation)‚ What is the interlunar spacing of silicon? nλ = 2d sin θ 1(154) = 2d sin 14.22 154 = 2d (0.245) 2d = 626.92 d = 313.46 2. A topaz crystal has an interplanar spacing (d) of 1.36 Å (1 Å = ). Calculate the wavelength
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(1629-1695) Wave Theory (1678) Light is a wave that can transfer energy without transferring matter Light waves have varying wavelengths‚ frequencies‚ speeds and amplitude • 6. Wave Theory (1678) Follows laws of reflection and refraction Explains diffraction: the effect of waves when encountering an obstacle Constructive and destructive interference http://www.sciencephoto.com/image/2511/530wm/A1800254-Water_waves-SPL.jpg • 7. Wave Theory Waves are additive: constructive interference Example:
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Light From personal experience I would say light within architecture is what makes you feel uplifted as you walk into a room or a space. Light can be controlled and manipulated within certain spaces by adding light or having an absence of light. Light can completely change the dynamics of a room or space and can also have a very strong effect on the mood. Light within architecture can either be natural or synthetic‚ both creating a special experience within a room. In my research I will
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Rock crushing‚ splitting samples‚ drying and grinding: Preparation for rock powder. Demonstrator: Encik Zamrut Daunar Date (and venue): 28 July 2010 (Basement) Aim: To crush‚ split‚ and grind solid sample rock for preparing rock powder. Objective: 1. To learn the techniques and mechanisms of preparing rock powder; which will be used as a sample for Bernas Bomb and XRF/ XRD techniques. 2. To know the processes and machines used in the rock crushing and sample preparation. Apparatus/
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