Fourier transform

Melting point is the technique that disrupts the IMAF’s and forces the molecule to break by adding thermal energy to increase kinetic energy to the compound. When melting the unknown the interactions within the IMAF’s of the molecule are decreasing causing a disruption within the structure of the lattices. Determining the melting point of Unknown 105 A helps narrow down the possible compound that it can be, by the given melting point range. The narrower the range represents the relative purity…

Esters have a very sweet fruity smell. Esters are commonly used in the preparation of artificial flavors or fragrances. Flavors and fragrances may utilize a single ester or a mixture of esters and other substances to duplicate the odor and flavor of a particular fruit. Naturally occurring esters are found in fruits. An ester is a product of the reaction of an acid (carboxylic acid) and an alcohol (the hydrogen of the acid R-COOH is replaced by an alkyl group R'). Esters mainly result…

polyallyl polyether of allyl sucrose Abstract: Allyl sucrose is prepared by using sucrose, allyl chloride, NaOH and DMSO. This novel method is less time consuming and required less solvent than other methods. The product is characterized by Fourier Transform Infrared (FT – IR), 1H-NMR and MASS Spectrometer. Key words: allyl sucrose, allyl chloride, sucrose Introduction: Allyl sucrose is used for different…

characterized by a slowing of the heart rate during exhalation and an increase in heart rate during inhalation. Vagal influence on heart rate variability has been quantified in a multitude of ways. One of these methods, spectral analysis, utilizes a Fourier-transform equation to decompose the heart period waveform into power bands that correspond to frequencies. Specifically, the “high-frequency power band” (HF-HRV) corresponds to the frequency range of .15 to to .40 Hz, and is thought to…

solution to the original problem. This technique is the basis of algorithms for all kinds of problems, such as sorting method like quick sort, merge sort, syntactic analysis(top down parsing) of compilation process, and computing the discrete Fourier transform. Searching Searching is the algorithmic process of finding…

Fig. 11: Residuals in the osculating orbital elements of Nereid for long time interval. The semi-major axis is given in km, eccentricity in radians and the rest of elements are in degree (Saad & Kinoshita 2001). Vashkov’yak and Teslenko (2010) in addition to the effects of the mother planet Neptune, they considered the influence of the attraction of the internal satellite Triton on the evolution of the orbit of the external satellite Nereid. The disturbing function of Triton is…

stability of MWCNTs. By combining the selectivity and catalytic capacity of PB for H2O2, a synergistic effect was observed for the H2O2 detection. The morphology and chemical composition of the MWCNTs@PpPD-PB nanocomposites were characterized by Fourier transform infrared spectroscopy, transmission electron microscopy, and X-ray…

developed rapidly and were used first by chemists. The use of NMR to study the structure of proteins and other biological molecules was markedly improved in the late 1960s with the development of superconducting magnets and the implementation of Fourier transform NMR. However, it was not until the mid-1970s that the first applications of NMR to the study of metabolism in living biological systems were reported (Berden et al. 1974; Burt et al. 1976a,b; Hoult et al. 1974; Moon and Richards 1973;…

Witek-Krowiak et al., (2010) researched on the use of peanut shell to remove heavy metals from water solution. Cu (II) and Cr (III) ions were the heavy metals in this research, using Langmuir, Freundlich, Redlich–Peterson and Sips models to examine data gotten from the tests. The preparation of the bio sorbent material (peanut shell) was prepared by washing with pipe and refined water for about 1-2hrs to remove dirt and colour, the washed peanut shells were dried in an oven for a day then mashed…

FTIR Spectroscopic Study on Inner Membrane of Egg Shell of Chicken Gallus gallus domesticus Abstract: The paper presents FTIR analysis of inner membrane of eggshell of chicken Gallus gallus domesticus. Fresh samples of egg shells are cleaned; dried and inner membrane of the shell is separated carefully for FTIR analysis. FTIR spectrum reveals a series of bands related to fats and proteins. Calcium carbonate is the major constituent (about 90%) of the shell, but it is absent in the inner shell…