The Double Helix James Watson accounts all the events of his career that occurred during 1950 to 1953‚ which led to the discovery of structure of the DNA in his famous piece of science writing called “The Double Helix”. In his book‚ James Watson describes how he and Francis Crick discovered the structure of the deoxyribose nucleic acid (DNA) that leads to the major themes of this book‚ which is nature of scientific discovery. Watson describes his and Crick’s search for a simple explanation of DNA
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American Telephone and Telegraph Company Coupled Wave Theory for Thick Hologram Gratings By HERWIG KOGELNIK (Manuscript received A thick May 23‚ 1969) coupled wave analysis is given of the Bragg diffraction of light by hologram gratings‚ which is analogous to Phariseau ’s treatment of acoustic gratings and to the "dynamical" theory of X-ray diffraction. The theory remains valid for large diffraction efficiencies where the incident wave is strongly depleted. It is reflection holograms
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In psychology and education‚ learning is commonly defined as a process that brings together cognitive‚ emotional‚ and environmental influences and experiences for acquiring‚ enhancing‚ or making changes in one ’s knowledge‚ skills‚ values‚ and world views. Learning as a process focuses on what happens when the learning takes place. Explanations of what happens constitute learning theories. A learning or practice theory attempts to describe how people and animals learn; thereby helping us understand
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Do I use double or single quotation marks for block quotations? You do not usually need opening and closing quotation marks to punctuate material set off from the main text as a block quotation. Block quotations are typically either indented or put in a smaller font. Quotations within the block will have double or single quotes‚ according to the convention being used (British or American). As usual‚ these different conventions for closing punctuation complicate things. Compare the following two
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The Double Standard With a Nike basketball shoes‚ and they are double cushion PU soles sold in the world‚ but it became the single cushion when the shoes are sold in China. What’s more‚ the price is 500 yuan higher than abroad. In the U.S.‚ the price is $ 125 (about 800 yuan)‚ and there are two ZOOM cushion. Beijing Industry and Commerce Bureau believes that Nike engaged in "double standards" on the product‚ and the Nike company discriminate Chinese and foreign consumers‚ and it against the Chinese
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of electromagnetic radiation. How does the issue of scarcity and interference relate to the electromagnetic spectrum? The spectrum is considered scarce because of the limited number of frequencies for operation and two parties cannot broadcast on the same frequency in the spectrum. Interference not only can be caused by broadcasters but by natural phenomenons like thunderstorms. Another factor‚ which can attribute to interference is one known as Intermodulation. This happens when two or more frequencies
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There is a huge problem in the NFL. Viewership is down. There is no one single reason why viewership is down; there are a variety of reasons as to why: quality of play‚ off-field issues‚ declining cable subscriptions‚ saturation and the wide variety viewing options. These issues are varied and complicated so there is no easy solution that will solve all of these issues. The easiest fix is bringing up the quality of play. Again‚ there are many reasons as to why quality of play is down and some are
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Methods to reduce Mother Tongue Interference (M T I ) in the classroom Introduction: The importance of English language acquisition as a stepping-stone for proficiency in school subjects cannot be over emphasized. The knowledge of English is important both for educational‚ national and economic development of a country. English is the official language of administration and commerce and also a major language of science. It should be further highlighted at the need for improving the quality of spoken
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DOUBLES’ DELIGHTS Stacy smilingly approached the podium for her turn to speak at our annual tennis banquet. The team with families‚ and fans had gathered to celebrate the end of tennis season. After thanking her family‚ and the coaches‚ Stacy turned towards me‚ and with her voice quivering said‚ “You pulled me through.” There were tears in her eyes. “You were the best partner I could have‚ you lifted me up. I learnt to hold myself up. During the worst of times‚ you brought out the best in me. You
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FLEXIBLY DIVIDED DOUBLE LUMEN ENDOTRACHEAL TUBE Viren Sunil Kalsekar‚ Joy Lee‚ Jenny Qiu‚ Nicholas Ragosta‚ Javier Ramos‚ David Taylor Massachusetts Institute of Technology Cambridge‚ MA‚ USA ABSTRACT Endotracheal tubes (ETT)‚ are used to maintain patient airway access during surgical procedures. The design presented here addresses a current need of the gold standard ETT by allowing for the passage of a larger bronchoscope through the inner lumen of the ETT while keeping outer dimensions constant
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