Electron paramagnetic resonance

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    in my endeavors. Research and Professional Experiences Despite not attending a research institution, I have received a strong education in the sciences and liberal arts. I have also obtained some research experience. In the summer of 2016, I was a REU participant at Miami University (Gary Lorigan Lab). The goal of my project was to advance a novel method of determining the local secondary structure of the [KIGAKI]3-NH2 (KIGAKI) peptide. Electron Spin Echo Envelop Modulation (ESEEM) is a form of pulsed electron paramagnetic resonance spectroscopy that detects modulation in the larmor frequency of a deuterium atom within 8Å of an electron spin. This modulation can be detected as an intense signal on the ESEEM spectrum. Using solid phase peptide synthesis (SPPS), I strategically incorporated a 2H-labeled residue (i) into the 4th or 10th residue of the sequence; along with a cysteine residue up to four amino acid positions away from the 2H-label (i+1, i+2, i+3, i+4). A spin-labeling reaction was performed to attach a nitroxide spin label (electron spin) to the cysteine side chain. I purified KIGAKI samples with high performance liquid chromatography (HPLC) and confirmed purity with matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF). I then dissolved these peptide variants in alpha helical inducing solvent or incorporated them as a beta sheet in lipid vesicles. Since ESEEM spectroscopy has an 8Å detection limit, we proposed that alpha helical i+3 / i+4 and…

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    Lab Report Nuclear Spin

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    If a photon is emitted it is possible for an unpaired electron to leap from one energy level to the other. As we know the energy of a photon to be and the resonance condition to be , we get the equation which is the fundamental equation of electron spin resonance where we can find the microwave resonance frequency. When electromagnetic energy in the microwave range is applied, the magnetic field corresponds to value of approximately 0.35 T which is needed to gain useful ESR spectra. Energies…

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    Fabrication Lab Report

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    Introduction: The lab experiment on Fabrication and Microwave Frequency Measurement of a ring Resonators was about finding the relative dielectric constant and the response of a ring resonator. These values are found by using a ring resonator and setting a frequency signal to the ring to resonate the signal. This lab also shows how to make the ring resonators from paper or any type of electric device from fabrication. Fabrication is used to print electric devices such as printed circuit boards.…

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    Nanoelectromechanical systems (NEMS). These devices because of their size, they come with properties such as reduced mass, high quality factor (Q factor) and very high fundamental resonance frequencies. These qualities of NEMS makes them desirable for numerable applications such as components of signal processing devices, actuators and high speed sensors. NEMS can be used to construct resonators through a process of surface nanomachining to achieve frequencies of above 10Ghz. The operation at…

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    As people decided to sending human into deep space to explore unknown feature of the universe, the environment outside the earth is a big uncertainty with factors that we can’t fully understand yet. Besides the cost and the time we spend during long space travel, stay in the cold, vacuum universe would let astronauts experience different kind of radiation. These radiation may be some ionized particles as electromagnetic waves traveling with high speed and energy. They could come from nearby…

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    His new model better described the structural components of the atom than Dalton’s featureless atom. Thompson used a Cathode Ray Tube, which was a sealed glass container, and shot a stream of electrons across the glass tube. When the particles stuck to the other end of the tube, it created a patch of light that indicated where the particles landed. Thompson discovered that by using a magnetic field, he could move and deflect particles. He found that particles would always move towards the…

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    Structure Of Water

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    The Earth is covered by about 70% of water and naturally, water is the only material that exists in three different states (solid, liquid and gas). This highlights that water is an important component as a chemical substance and this is due to its unique properties. Structure of water is one of the main features of water that allows it to carry out its job and that determines its functions and properties. Structure of water Water the molecule In a water molecule, there is one oxygen that has…

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    – equation (2 gives info on location of electron in terms of probability density - wave functions are called orbitals – [pic], where E is energy, e2 is electric potential, r is orbital radius and h is Planck’s constant 1925 Wolfgang Pauli – each orbital has only 2 electrons is now explained due to direction of spin of electrons. Spinning electrons create magnetic field. Only 2 electrons of opposite spin in an orbital referred to as Pauli exclusion principle Hund’s rule – half fill…

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    Nt1310 Lab 7

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    behavior is assumed to decrease the activation energy of the carrier and boost the mobility towards the electrode during polarization. This case, Ag nanoparticles occupy the free volume holes (amorphous phase) and fill the interstitial positions between the PVA chains in the amorphous phase and connected these chains to some bonds by a charge interchange process between the Ag and PVA chain network. Moreover, this complex formation increases with the time of reaction. As a result, both charge…

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    1. Observation. - Compound X is a white powder. It is a solid. 2. Questions. - What is compound X? - What will happen when compound X is heated and reacted with C20H14O4 (phenolphthalein – an acid-base indicator)? (1) - How does compound X react with C20H14O4 (phenolphthalein)? (2) - How does compound X react with water? (3) - How does compound X react with hydro chloric acid (HCL)? (4) 3. Predictions. - Compound X is calcium carbonate (CaCO3). - (1) When compound X is heated and reacted with…

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