Common Aspects of Acid Prehydrolysis and Steam Explosion for Pretreating Wood Hans E. Grethlein Michigan Biotechnology Institute‚ PO Box 27609‚ Lansing‚ Michigan 48909‚ USA & Alvin O. Converse Thayer School of Engineering‚ Dartmouth College‚ Hanover‚ New Hampshire 03755‚ USA Abstract The initial rate of hydrolysis using cellulase from Trichoderma reesei for various wood samples is directly proportional to the surface area available to the enzyme. Both dilute acid hydrolysis in a continuous
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ACID RAIN Cantarelli‚ Ilaria García Díaz‚ Bianca Gressier‚ Emilie Martínez Rivas‚ Carmen What’s the acid rain? Acid rain is a rain or any other form of precipitaton that is unusually acidic. What causes acid rain? Acid rain is caused by the burning of fossil fuels. Burning oil‚ gas and coal in power statons releases Sulphur Dioxide into the atmosphere. Burning oil and petrol in motor vehicles puts nitrogen oxides into the atmosphere. These gases mix with water droplets in the atmosphere creatng
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Advantages: Sulfamic acid is the fastest de-scaler - It dissociates into hydroxonium ions more readily in aqueous solution than the others‚ therefore giving a greater concentration of atoms that are able to react with the calcium in lime scale. It is safe to use because it does not produce chlorine gas [5]‚ which can be toxic. Sulfamic acid also has a low volatility. Disadvantages: Sulfamic Acid can be an irritant to eyes or skin and is the most expensive of the de-scalers. Q2) How these de-scalers
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It relies on weak ties because it uses unofficial social connection to trade the products. It is hard to trust all the companies most of the time. But they always provide direct information about the products they are selling.Weak ties help feral trade to get connected into many people in social network‚ which strong ties cannot reach as many people. Weak ties help people to offer them opportunities to get a job. 2. The Hart-Cellar Act brought a system of family preferences to the immigration process
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too much or too little control over its country. In either sense‚ it will always bring pain‚ anger‚ and rebellion. For example‚ in 1776‚ The Articles of Confederation was created as the U.S. first constitution. It was clear that The Articles made a weak federal government thus it gave more power to the states. While the U.S. used the Articles‚ it faced many economic problems due to the lack of the power of the federal government. One of the main problems was that the federal government is that it
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(or iron oxide) forms: • Howstuffworks.com. (2009). How does rust work? Retrieved April 3‚ 2009‚ from http://www.howstuffworks.com/question445.htm These sources describe what acid rain is: • Buchdahl‚ J. (2003). Acid rain. Retrieved April 3‚ 2009‚ from http://www.ace.mmu.ac.uk/kids/acidrain.html • Acid Rain Students Site. (n.d.). Retrieved April 3‚ 2009‚ from http://www.epa.gov/acidrain/education/site_students/index.html For help creating bar charts‚ try this website: • National
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Pakistan: A Weak State After independence from the British in 1947‚ President Mohammad Ali Jinnah’s vision for Pakistan was very clear: he wanted peace‚ good governance‚ tolerance and a state able to adhere to a rule of law. Unfortunately‚ this vision was never transformed into reality; the nation created as a home for the British India’s Muslims six decades ago today represent one of the world most troubling states in crisis (Crisis Guide: Pakistan).Why can’t Pakistan flourish? What makes Pakistan
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used (ml) | 30.6 | 30.2 | 30.0 | | | | | Acid to Base Ratio | 0.87 | 0.86 | 0.86 | Average acid/base ratio | 0.86 | | | | | Base to Acid Ratio | 1.14 | 1.16 | 1.17 | Average base/acid Ratio | 1.16 | Name: Jared Philip Condez Date Performed: June 28‚ July 2 & 5‚ 2013 Partner: Shiela Mae Molina Date Submitted: July 12‚ 2013 Experiment 3 ACID – BASE TITRATION I. Objectives * Determine the purity of Potassium Acid Phthalate * To titrate effectively
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Some say that the idea of love in modern terms differs conceptually from that of earlier periods. That argument is demonstrably false. Although love has been characterized in many different ways throughout the ages‚ the fundamental idea remains constant. No matter the eccentric personalities love is entitled to‚ love is what it is. From a literary point of view‚ whether one reads the tender longing of Sappho‚ the unattainable desire of Petrarch‚ or the whimsical prose of Dickenson‚ the message
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Metro. The students will read English materials only when asked. Normally‚ a person would feel bored when doing something by force and so the students will quickly get bored when reading any material they do not like. Apart from that‚ the cause of weak students master the English language is most of the students to look at the English language only as a subject. They learn English just to pass the exam. They also assume that the English language is a tedious and troublesome. So‚ they think it is
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