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TOP
SusanEugene
I'm a seasoned industrial engineer with a keen interest in machine learning. Here to share insights on latest industry trends.
Industry info
Wiki
Q&A
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Q&A
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Q
what type of macromolecule has amino acids as its monomers
einscan_shOn
SusanEugene
Release Time:
August 18, 2024, 10:00 AM
The type of macromolecule that has amino acids as its monomers is a protein. Proteins are essential for the structure, function, and regulation of the body’s tissues and organs. They are composed of long chains of amino acids which determine the protein’s structure and function through their sequence. There are 20 different amino acids that can combine in various ways to create a vast diversity of proteins, each serving unique roles in the body. These roles include serving as enzymes to catalyze biochemical reactions, as structural components in cells, and as signaling molecules to communicate between cells. The ability of proteins to perform such a wide range of functions lies in the unique three-dimensional structures formed by the sequences of amino acids, highlighting the critical nature of these macromolecules in biological systems.
0
Q
how do carbon hydrogen and oxygen form amino acids
TrumanGaskell
SusanEugene
Release Time:
August 15, 2024, 5:10 AM
Amino acids, the building blocks of proteins, are organic compounds composed mainly of carbon (C), hydrogen (H), oxygen (O), and nitrogen (N). While sulfur (S) is also a component of some amino acids, the focus here is on C, H, and O. These elements form the backbone and functional groups of amino acids. The basic structure of an amino acid includes a central carbon atom (alpha carbon) bonded to a hydrogen atom, an amino group (NH2), a carboxyl group (COOH), and a variable side chain (R group) that determines the amino acid’s properties. The carbon atom plays a central role, bonded to four different groups, making amino acids chiral (except for glycine where the R group is another hydrogen, rendering it non-chiral). Oxygen is primarily found in the carboxyl group, contributing to the acid nature of these molecules. Hydrogen is present in the amino group, the carboxyl group, and the side chains, affecting the amino acid’s polarity and charge. Through a dehydration synthesis ...
0
Q
where to buy metallic epoxy
SusanEugene
ArlenSam
Release Time:
August 8, 2024, 5:24 AM
Metallic epoxy can be purchased from a variety of sources including specialty flooring stores, online marketplaces like Amazon or eBay, and directly from manufacturers’ websites. Some well-regarded brands in the industry are Epoxy-Coat, Rust-Oleum, and LEGARI. When choosing where to buy, consider the project size, desired colors and effects, as well as the product’s reviews. Buying directly from manufacturers can often provide more technical support and guidance for DIY projects. However, online marketplaces may offer competitive pricing and user reviews that can be valuable in making a decision. Remember to also purchase necessary application tools if they are not included.
0
Q
what size beads for resin sphere
SusanEugene
JonasAndrew
Release Time:
August 2, 2024, 10:04 AM
When creating resin spheres, selecting the right bead size is crucial to achieving the desired effect. For smaller resin spheres (up to 2 inches in diameter), using beads that are 1mm to 2mm in size will create a fine, detailed appearance. For larger spheres (over 2 inches), you can opt for beads ranging from 2mm to 4mm to maintain proportion and visibility. It’s important to consider the final look you’re aiming for. Smaller beads offer a more subtle texture, ideal for creating a delicate sparkle or intricate patterns. Larger beads, on the other hand, are better for bold, eye-catching designs. Regardless of size, always ensure your beads are compatible with the resin you’re using to avoid any chemical reactions or compromises in clarity. Experimentation is key to finding the perfect bead and resin combination for your project.
0
Q
how to create epoxy resin
SusanEugene
SophiaKathleen
Release Time:
August 3, 2024, 5:04 AM
Epoxy resin is a thermosetting polymer formed from a reaction between an epoxide “resin” and a polyamine “hardener”. To create epoxy resin, one must carefully mix the two components in the correct ratio, commonly 1:1 or 2:1 resin to hardener by volume. The process begins by accurately measuring out the components, usually in a clean mixing cup. Slowly add the hardener to the resin, mixing thoroughly for at least 3-5 minutes to ensure complete blending without introducing too many air bubbles, which can affect the final finish. The mixture then needs to cure, which can take anywhere from several hours to days, depending on the product specifications and environmental conditions like temperature and humidity. It’s crucial to work in a well-ventilated area and wear protective gear such as gloves and safety glasses due to the chemical’s potent fumes and potential skin irritancy. Experimenting with small batches can help familiarize oneself with the proce...
0
EdAbraham
Release Time:
July 30, 2024, 11:02 AM
Epoxy resin is a thermosetting polymer formed from a reaction between an epoxide “resin” and a polyamine “hardener”. To create epoxy resin, one must carefully mix the two components in the correct ratio, commonly 1:1 or 2:1 resin to hardener by volume. The process begins by accurately measuring out the components, usually in a clean mixing cup. Slowly add the hardener to the resin, mixing thoroughly for at least 3-5 minutes to ensure complete blending without introducing too many air bubbles, which can affect the final finish. The mixture then needs to cure, which can take anywhere from several hours to days, depending on the product specifications and environmental conditions like temperature and humidity. It’s crucial to work in a well-ventilated area and wear protective gear such as gloves and safety glasses due to the chemical’s potent fumes and potential skin irritancy. Experimenting with small batches can help familiarize oneself with the proce...
0
Q
what’s the best website to get organic polymer
JoannaEveline
SusanEugene
Release Time:
July 28, 2024, 12:52 AM
The quest for the best website to acquire organic polymer largely depends on the specific type you need, whether for research, industrial application, or crafting. If you’re looking for scientific-grade polymers, websites like Sigma Aldrich or Fisher Scientific are highly reputable, offering a wide range of products with detailed specifications and safety data sheets. For industrial quantities, Alibaba or Thomasnet could be the go-to, as they connect buyers with manufacturers and wholesalers, allowing for custom orders. Crafters and hobbyists might find Etsy or specialty craft supply sites more useful, especially for biodegradable or eco-friendly materials. Ensure to compare prices, read reviews, and check for sustainability practices before purchasing.
0
Q
where to buy epoxy grout in singapore
AprilWells
SusanEugene
Release Time:
July 27, 2024, 4:26 AM
In Singapore, epoxy grout can be purchased at a variety of hardware stores and specialty tile shops. Popular options include Hafary, the largest supplier of tiles in Singapore, which offers an extensive range of epoxy grout suitable for different tiling projects. Additionally, DIY shops like Home-Fix and hardware chains like Horme Hardware and Bunnings Warehouse also stock this item. For a broader selection, online marketplaces such as Lazada and Qoo10 offer numerous brands and types of epoxy grout, catering to diverse preferences and project requirements. When selecting epoxy grout, consider factors such as color, resistance properties, and application ease to ensure optimal results.
0
Q
why was the wrong epoxy used in the big dig
IngemarMadge
SusanEugene
Release Time:
July 25, 2024, 5:42 AM
The Big Dig, a major infrastructure project in Boston, faced numerous issues, one being the use of the wrong epoxy for securing ceiling panels that resulted in a fatal collapse in 2006. This mistake stemmed from oversight and underestimation of the long-term load the epoxy would need to bear. The epoxy used was effective for short-term loads but not for long-term support in such a demanding environment. The failure to properly assess the durability and suitability of materials for critical structural elements was a significant oversight by the project’s management and contractors. This incident underscores the vital importance of rigorous material testing and adherence to safety standards in engineering projects.
0
Q
does terephthalic acid have a charge
KeithRudolph
SusanEugene
Release Time:
July 31, 2024, 5:04 AM
Terephthalic acid (C8H6O4), a benzenedicarboxylic acid, does not inherently carry a charge under neutral conditions, existing as a neutral molecule. However, its carboxyl groups (-COOH) can lose hydrogen ions (H+) in basic solutions, turning into negatively charged carboxylate anions (-COO-). The degree of ionization and resultant charge depend on the pH of the solution. In acidic or neutral environments, it remains largely uncharged, while in alkaline conditions, it becomes negatively charged due to deprotonation of its carboxyl groups.
0
IsaacEllen
Release Time:
July 24, 2024, 10:31 PM
Terephthalic acid (C8H6O4), a benzenedicarboxylic acid, does not inherently carry a charge under neutral conditions, existing as a neutral molecule. However, its carboxyl groups (-COOH) can lose hydrogen ions (H+) in basic solutions, turning into negatively charged carboxylate anions (-COO-). The degree of ionization and resultant charge depend on the pH of the solution. In acidic or neutral environments, it remains largely uncharged, while in alkaline conditions, it becomes negatively charged due to deprotonation of its carboxyl groups.
0
Q
what is polypropylene webbing used for
AdaNorth
SusanEugene
Release Time:
July 23, 2024, 3:15 AM
Polypropylene webbing is a strong, lightweight strap made from the thermoplastic polymer polypropylene. It is used in various applications due to its excellent tensile strength, low cost, and resistance to mildew, chemicals, and abrasion. Common uses include luggage straps, belts, backpacks, pet collars, and leashes, as well as in outdoor gear and sporting goods. Its durability and resistance to water make it ideal for items that may be exposed to moisture or require frequent cleaning. Additionally, polypropylene webbing is also used in the automotive and furniture manufacturing industries for seat belts and upholstery, owing to its strength and flexibility.
0
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