Essays on Fourier

Abstract

In this experiment, benzene was treated with hydrogen in the presence of Pt/SiO2 as an example that can be applied on industrial operations to show that the most recently modernized methods of neutron total scattering that cover a wide Q-range allow the use of appropriate catalytic chemistry that can be measured on time domain to probe directly on site the hydrogenation of benzene within the catalyst pore. Based on this method, it is possible to study the rates of reaction on length scales that can provide measurements equivalent to the size of an atom or a nanometre. Furthermore, the ...

Description of how MRI sequences spatially encode nuclei in the read and phase direction

Differences that occur in an induced magnetization in biological tissues in a magnetic field cause image contrast in MRI. A signal measured by the receiver coils is the integral of an induced magnetization over the whole imaged volume. To construct a three-dimensional distribution of magnetization, a spatially varying field pattern is generated in the volume, such that voxels at various parts generate a signal that is tagged with data on the location. Standard techniques for spatial encoding in MRI create high-quality images. In magnetic resonance imaging technique, two main methods (SVD MRI and SMASH MRI) are used to modify ...

Assignment about MRI Physics

The magnetic moment is considered as a vector quantity whose direction is perpendicular to the current loop in a right-hand-rule direction. The magnetic moment of nuclei are the magnetic moment of the nucleus that arises from a spin of protons and neutrons. A magnetic moment of nuclei is dipole moment – the quadrupole moment causes a shift in the hyperfine structure (Mangrum, 2012). Nuclei with non-zero spin have a non-zero magnetic moment while that have zero spins have zero magnetic moments. Different isotopes of an element have a different nuclei magnetic moment. A nucleus with an even number of protons ...

Health abnormlities of several kind require a thorough assessment in terms of management. With the technical advancements, medical field had evolved to simplify the complex assesssment tasks. For instance, medical imaging has come up to make feasible the analyis of body parts through the production of images. There is a need to know much about this particualr area. In such context, the present description deals with a topic Magentic Resonance Angiography (MRA) of the remal artery with a special emphasis on the 3D gradient echo sequencing in MRI. Briefly, magnetic resoannce angiography constitutes a kind of MRI (magnetic resonance ...

Trigonometric computations are used in nearly all fields of geometry, physics and engineering. The triangulation technique has the great importance, which allows measuring the distance in astronomy and geography, monitoring the satellite navigation system. Also trigonometry is used in such areas as music theory, acoustics, optics, analysis of financial markets, electronics, probability theory, statistics, biology, medicine and so on. Daniel Bernoulli, Fourier and Cauchy made a huge contribution to the involvement of trigonometry and developed the idea of trigonometric series. In the middle of the XVIII century, appeared the most important in its consequences "argument of a string". Euler ...

This experiment is about heat transfer in a fin based on Fourier’s law of heat conduction and Newton’s Law of Cooling. The latter states that the rate of heat loss of a body is proportional to the differences in temperature between the environment and the body. On the other hand, Fourier’s law of heat conduction states that the time of heat transfer through a material is usually directly proportional to the negative gradient of temperature and the area, at right angles to the gradient, through which the heat flows (Liehnhard, 23). The two laws will be ...

a) Can a printer, printing 40 characters per second, keep up with a string of ASCII characters (one byte per symbol) arriving serially at the rate of 300 bps?

1 Bytes = 1 symbol

The number of bits per character is usually 10 thus using 10 bits per word.

Therefore 300 bytes per second = 30 characters per second

So if a printer is printing 40 characters per second and the string of ASCII characters is 30 characters per second according to the above explanation, then the printer can keep up with that number.

What about 1200 bps?

1200 bytes per second implies 120 characters ...