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Cheap Price Disposable cornstarch Biodegradable plastic lunch box Cornstarch 750ml rectangle food container with lid
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400 mesh sericite powder with good weather resistance for industrial coatings
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Latex paint, low-grade anti-corrosion paint special coating grade talcum powder DYXN-1000
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Yili Chemical PVC resin PVC SG-5
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Ferro Silicon
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Blue 15:4
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I'm a seasoned industrial engineer with a keen interest in machine learning. Here to share insights on latest industry trends.
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In amino acids, the part consistently considered basic is the amino group (-NH2). This is due to its ability to act as a base by accepting a proton (H+) to form an -NH3+ group under physiological conditions. Amino acids are organic compounds composed of an amino group, a carboxyl group (-COOH), a hydrogen atom, and a unique side chain (R group) attached to a central carbon (alpha carbon). While the carboxyl group is acidic, the amino group's tendency to accept a proton and become positively charged under physiological pH makes it basic. The side chains of some amino attributes to the overall acid-base properties of amino acids, making some of them more basic than others (e.g., lysine, arginine, and histidine), but the amino group's basic nature is a consistent feature across all amino acids.
De-inking MTG (Magic: The Gathering) cards is a method used by enthusiasts to create custom cards or to restore cards whose ink has been damaged. This process usually involves using a solvent like acetone to remove the original ink without damaging the cardstock. It's a delicate procedure, requiring a steady hand and patience, especially for valuable cards where maintaining structural integrity is crucial. While de-inking can revitalize old or customized cards, it's important to note that de-inked cards are often considered marked cards in official tournaments and are not legal for play. Therefore, this technique is best suited for personal collections or for creating proxy cards for casual play. Always test the process on less valuable cards to refine your technique before attempting it on rarer pieces.
Polyethylene (PE) and Polypropylene (PP) are both plastics widely used in various applications but differ substantially in their properties and uses. The main difference lies in their chemical structure; PE is a simpler polymer comprising long chains of ethylene monomers, while PP is made from propylene monomers, giving it a slight chemical difference that significantly impacts its properties. PE is known for its flexibility, durability, and resistance to moisture, making it ideal for packaging films, containers, and bottles. On the other hand, PP boasts a higher melting point, making it suitable for applications that require sterilization at high temperatures, such as medical equipment and hot food containers. PP also has a stiffer composition, which contributes to its use in automotive parts, industrial fibers, and household goods. Finally, PP is less dense than PE, translating to lighter products with similar volume. Both plastics are recyclable, but their specific chemical compositions mean they must be processed separately.
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