Chapter 1Mahogany Seed as a Termiticide to Kill Termites INTRODUCTION Mahogany used in multistory systems in the Philippines‚ boat and ship building and patternmaking. Logs are used for the manufacture of veneers and for paneling. It is also used as shade for coffee and cacao. Mahogany is regarded as the worlds finest timber for high-class furniture and cabinetwork. Its popularity is especially due to its attractive appearance in combination with ease of working‚excellent finishing qualities and
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is its tendency to crease easily‚ which makes care of such garments more difficult‚ The tendency to crease is due to the to partially amorphous structure of the cellulose‚ which means that structural alterations can quite easily occur. Many weak molecular bonds such as hydrogen or Van Der Waals forces‚ which link together long cellulose polymer chains‚ can alter. Siltex 30200/Resin In order to limit creasing‚ Siltex 30200/Resin can be used which creates stronger (covalent) and more permanent
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In this way‚ the purpose of the pre - treatment is the departure of lignin and hemicellulose‚ the diminishment of crystalline cellulose and the development in the porosity of the materials. In addition‚ the pre - treatment should upgrade the improvement of sugars or the ability to shape them in the midst of the succeeding enzymatic hydrolysis and avoid the game plan of inhibitors
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PRETREATMENT OPERATIONS Classification: * Mechanical pre-treatment * Chemical pre-treatment Chemical Pretreatment: Operations To Remove Impurities: * Cleaning Operations: 1. Desizing: * To remove applied impurity i.e.; sizing material. * Hydrolysis of sizing material (starch) using enzymes. * Starch (hydrophobic) is converted into glucose and fructose (hydrophilic). * Assessment by Tegewa or violet scale. 2. Scouring:
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1 INTRODUCTION In recent years‚ there has been rapid growth in the number of Fast Dissolving / Disintegrating Tablet (FDT) product on the market. Fast Dissolving Tablets are solid tablets and designed to dissolve/disintegrate in the patient’s mouth within a few second or minutes‚ without the need to drink or chew. However‚ the fear of taking solid tablets and the risk of choking for certain patient populations still exist despite their short disintegration/dissolution times. However‚ some
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of the recent research on the fundamental and applied properties of nanoparticles extracted from cellulose‚ the most abundant polymer on the planet and an essential renewable resource. Given the rapid advancements in the field and the high level of interest within the scientific and industrial communities‚ pioneered the use of cellulose nanoparticles (cellulose nanocrystals or whiskers and cellulose microfibrils) in nanocomposite applications. in the life sciences and bio-based applications‚ biological
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the market – only two major players 2.Unutilized capacity of 1200 tonnes - can be used in case of unexpectedly high demand 3. Capacity increase sanctioned by the government – can be used to service newer markets 4. Rising number of users for Cellulose film Weaknesses of Nirmal Rayons 1. Increased supply – 2 existing firms and 3 new ones have been given letters of intent for increasing capacity 2. Substitutes – Cheaper alternatives like Cellophane like PVC have emerged in the market. Problem
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entirely different and new product. Celluloid quickly moved into many markets‚ including the first photographic film used by George Eastman to produce the first motion picture film in 1882. The material is still in use today under its chemical name‚ cellulose nitrate. In 1909‚ Dr. Lee Hendrik Baekeland introduced phenoformaldehyde plastics (or "phenolics"‚ as they are more popularly known)‚ the first plastic to achieve worldwide acceptance. More importantly‚ Baekeland also evolved techniques for controlling
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1. INTRODUCTION 1.1 ENZYMES THE ENZYMES SPEAK!! “We are the catalysts of the living world! Protein in nature and in action specific; rapid and accurate; huge in size but with small active centres; highly exploited for disease diagnosis in lab centres”. DEFINITION Enzymes may be defined as biocatalysts synthesised by living cells. They are protein in nature (exception RNA acting as ribozyme) colloidal and thermo-labile in character and specific in their action. HISTORICAL BACKGROUND In
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mammals with a paunch with micro-organisms that digest cellulose and other polysaccharides from plant sources. Most animals lack the enzyme‚ that is necessary to digest cellulose from plants and therefore dependent on microorganisms. The temperature of the rumen is approx. 39 degrees‚ the pH is approx. 6.5 and is anaerobic conditions. The food is present in the rumen for 9 to 12 hours and during this period bacteria and protozoa hydrolyze cellulose to the disaccharide cellobiose and free glucose molecules
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