Many people believe that DNA was discovered in 1950 by Watson and Crick‚ but they are misguided‚ in fact it was discovered almost centuries before by a number of less known scientists. Genes were discovered to be heritable from parents by a humble pea grower by the name of Gregor Mendel in 1866. Since then we have discovered that DNA‚ also known as deoxyribonucleic acid‚ is the carrier of genes‚ traits that pass down from generation to generation.The reality is that the credit didn’t go to everyone
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Nature of Waves Vibrations or oscillations are closely related to waves. Waves are created whenever objects vibrate or oscillation. Periodic Motion * A repeated motion that occurs back and forth over the same path at regular intervals. Examples: * A Child on a swing * A wrecking ball swaying to and fro * A swinging pendulum of a grandfather clock Simple Harmonic Motion (SHM) * Is a type of motion along a straight path in which the acceleration is proportional to the displacement
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Structural Analysis of Serine Peptidase-Inhibitor Complexes When analyzing these structures‚ we observed a reasonably strong hydrogen bond interaction (distance ~ NVL ≫ AAoF ≈ NVoL. Surprisingly‚ the unmodified AAF compound showed a substantially higher level of activity over the unmodified NVL compound. Initially‚ we hypothesized that the modified compounds (No H-Bond) would be less active. To our surprise‚ both modified compounds‚ AAoF and NVoL‚ showed negligible activity (Figure 16). Additionally
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Introduction CL-20 is a energetic compound with high density‚ good oxygen balance (-11%) and high explosive power. However‚ CL-20 has failed to see widespread implementation due to high mechanical sensitivity‚ it is relatively easily detonated by physical forces in comparison to other secondary explosives. While cocrystal CL-20/TNT exhibited a mechanical impact sensitivity greatly reduced relative to that of pure CL-20‚ it was also expected to feature reduced explosive power due to the
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species. Their activity has also been tested by broth dilution method using six bacterial species. Minimum Inhibitory Concentration (bactericidal) is 6.25–25.00 mg mL–1. Keywords: diethyldithiocarbamate‚ DTA‚ fungicide‚ IR‚ synthesis‚ TG‚ X-ray diffraction Introduction The plant protection has become necessary in order to increase the food production. Many organometallic compounds may have important biological activities. This work is continuation of our previous research on organometallic compounds
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Photoelectric Effect: Determining Planck’s Constant Friday‚ Section 006 TA: Yilikal Ayino John Greavu with Daniel Erickson & Kevin Haar January 31‚ 2014 PreLab Up until the eighteenth century‚ particle theories of light dominated physics‚ primarily due to the work of Isaac Newton. Thomas Young’s 1805 famous double-slit experiment‚ which showed that light mimics a wave‚ extinguished some of these early views. However‚ in 1887‚ Heinrich Hertz – who is‚ coincidentally‚ perhaps better known for definitively
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absorbed and have been stripped of any white light wavelengths. Any color that is primarily absorbed by a pigment molecule will have the reflection of light in the opposite range of color. Structural colors are created from reflection‚ diffraction and refraction. At times‚ light can reflect away from an object creating many fragments‚ so it is said to be scattering. However‚ if the light changes speed while/before hitting a transparent object‚ it is
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IWMST 2013 INTERNATIONAL WORKSHOP ON MATERIALS SCIENCE AND TECHNOLOGY 2013 SUMMARIZATION REGARDING IWMST 2013 International Workshop on Materials Science and Technology was a seminar which has been designed for students of Materials Technology to gain more knowledge and as a path for them to explore more regarding materials science. This seminar has been providing an early exposure and ideas to students related to their career prospects after graduation later. Materials Technology
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lead-free Bi-based ferroelectric system with perovskite structure (1 − x) Bi1/2K1/2TiO3 – x BiScO3 was synthesized by a conventional solid-state reaction method for compositions with 0 ≤ x ≤ 0.3. The phases obtained were characterized by X-ray powder diffraction and scanning electron microscopy. Dense ceramics were prepared by a conventional sintering technique at 950-1000°C depending on composition‚ and their structure and electrical properties were systematically investigated. The XRD analysis shows
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DISCIPLINE OF PHARMACEUTICAL CHEMISTRY DRUG DESIGN AND DISCOVERY BY: xxxxxxx Introduction A drug is a substance that we used mostly in our daily lives. It is a chemical substance with physiological effects when ingested or introduced into our bodies. The response produce can either be beneficial or harmful. Toxins and poisons can be classified as drugs. This report the term ‘drug’ is for medicinal or pharmaceutical purposes. Drugs used to prevent or treat diseases. Drug design
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