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OrvilleAndrew
I'm a seasoned industrial engineer with a keen interest in machine learning. Here to share insights on latest industry trends.
Industry info
Wiki
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Q
how do you coat a polymer film with a metal
AlanThompson
OrvilleAndrew
Release Time:
September 18, 2024, 1:01 PM
Coating a polymer film with metal involves depositing a thin layer of metal onto the polymer surface to enhance its properties like conductivity, reflectivity, or barrier qualities. The process often starts with surface preparation, such as cleaning or applying an adhesion promoter to ensure good metal-polymer bonding. Common methods for metal deposition include sputtering, where ions are used to eject metal atoms onto the polymer in a vacuum; evaporation, where metal is heated until it vaporizes and condenses on the cooler polymer surface; and electroplating, which requires the polymer to be made conductive through a pre-treatment process, then dipping it into a solution containing metal ions and applying an electric charge to deposit the metal. Each technique has its pros and cons, and the choice depends on the type of metal, the desired thickness, and the polymer’s heat sensitivity.
0
Q
are azos a benzo
HoraceAntonia
OrvilleAndrew
Release Time:
September 15, 2024, 7:02 AM
The term “azos” is not a standard reference to any specific drug or group within the context of substances known as benzodiazepines, often shortened to “benzos.” Benzodiazepines are a class of psychoactive drugs used to treat conditions such as anxiety, insomnia, and seizures. They work by enhancing the effect of the neurotransmitter GABA in the brain, which results in sedative, hypnotic (sleep-inducing), anxiolytic (anti-anxiety), anticonvulsant, and muscle relaxant properties. Common examples of benzodiazepines include diazepam (Valium), lorazepam (Ativan), and clonazepam (Klonopin). It’s important to distinguish substances accurately and understand that “azos” does not directly refer to the well-defined benzodiazepine class. Using precise terminology is crucial when discussing medications to avoid confusion and ensure clear communication, especially in contexts involving health and safety.
0
Q
what color dye cancels out green
GavinEvelina
OrvilleAndrew
Release Time:
September 6, 2024, 2:04 PM
The color dye that cancels out green is red because of how colors interact according to the color wheel. The color wheel is a tool used in art and design that shows the relationship between colors. It’s based on the primary colors (red, blue, yellow), their secondary combinations, and further mixtures. Green is a secondary color, made by mixing blue and yellow. According to color theory, to neutralize a color, you would use its opposite (or complementary) color on the wheel. For green, this opposing color is red. This principle is applied not only in art and hairdressing but also in dealing with discolorations in fabrics or on walls. By adding a red-toned product to green hair or vice versa, one can effectively cancel out the unwanted green tint, achieving a more neutral color.
0
Q
how to extract cellulose from wood
SidGeoffrey
OrvilleAndrew
Release Time:
September 4, 2024, 9:14 AM
Extracting cellulose from wood involves several key steps to break down the wood’s complex structure and isolate cellulose fibers. Initially, wood chips are treated with chemical solutions, such as sodium hydroxide or other alkalis, to remove lignin and hemicellulose, components that bind the cellulose fibers together. This process is known as delignification. Afterward, the treated wood chips are further processed through a bleach solution to purify the remaining cellulose, removing any residual lignin and impurities that might affect the whiteness and purity of the final cellulose product. Mechanical action may also be involved to separate the fibers. The resulting cellulose can then be washed, dried, and further processed for various applications, including the production of paper, textiles, and biodegradable plastics. It’s a complex balance between chemical and mechanical processes designed to preserve the integrity of the cellulose fibers while removing other component...
0
Q
what is cellulose fiber in clothes
OrvilleAndrew
MaricoRosa
Release Time:
September 3, 2024, 12:01 PM
Cellulose fiber in clothes refers to a natural polymer obtained from plant cell walls, primarily cotton, linen, and bamboo. It’s the most abundant organic compound on Earth. These fibers are biodegradable and widely used in the textile industry due to their natural origin, breathability, absorbency, and strength. Cellulose fibers, being from renewable sources, offer an eco-friendly alternative to synthetic fibers like polyester. They are processed into various forms like viscose, modal, and lyocell, each offering distinct qualities such as softness, durability, and moisture management. Their versatility makes them suitable for a wide range of clothing, from everyday wear to high-fashion garments. Choosing cellulose-based clothing can contribute to a sustainable wardrobe, reducing dependency on fossil fuel-derived fibers.
0
Q
why we can digest starch but not cellulose
OrvilleAndrew
Dave
Release Time:
September 2, 2024, 10:49 PM
The primary reason we can digest starch but not cellulose lies in their molecular structures and the types of enzymes we have. Both starch and cellulose are polysaccharides made of glucose units, but their glycosidic bonds differ. Starch is primarily composed of amylose and amylopectin, linked by α-1,4 and α-1,6 glycosidic bonds, which the enzymes in the human digestive system, like amylase, can easily break down. On the other hand, cellulose has β-1,4 glycosidic bonds, forming a linear structure that human digestive enzymes, like cellulase, are incapable of breaking down. While some microbes in the guts of ruminant animals and termites can produce cellulase, humans lack these enzymes. Therefore, cellulose passes through the human digestive system as fiber, aiding in digestion but not providing nutritional value in the form of absorbable glucose.
0
Q
how to filling ink to souveran
GuyLondon
OrvilleAndrew
Release Time:
August 29, 2024, 3:04 AM
Filling ink into a Pelikan Souverän, a prestigious fountain pen line known for its piston-filling mechanism, requires precision but is a straightforward process. Firstly, ensure you have the correct ink type, preferably water-based fountain pen ink. Unscrew the end cap of the pen (opposite the nib) to access the piston control knob. Then, dip the nib fully into your ink bottle, ensuring the entire nib and part of the grip section is submerged to avoid air pockets. Twist the piston control knob counterclockwise to move the piston up, creating a vacuum. Next, slowly twist the knob in the opposite direction (clockwise), to draw ink up into the reservoir. After filling, gently wipe the nib and grip section with a soft, lint-free cloth to remove any excess ink. Finally, screw the end cap back on, and your Pelikan Souverän is ready to write. Remember, regular cleaning and maintenance will ensure the best performance of your fountain pen.
0
Q
how to make pre coated emulsion sheets
AndrewEzekiel
OrvilleAndrew
Release Time:
August 28, 2024, 2:18 PM
Making pre-coated emulsion sheets involves a process that is meticulous but rewarding for those interested in screen printing or photographic activities. These sheets are used to transfer designs onto various materials. To start, you’ll need a clean, dust-free environment. Prepare your colloidal solution, which can be a mix of dichromate and gelatin (for photographic uses) or photosensitive emulsion for screen printing. The process varies slightly for each application but generally follows these steps: 1. Begin with a uniformly smooth and clean substrate (plastic or paper). 2. Pour the prepared emulsion onto the center of the sheet. 3. Use a roller or squeegee to spread the emulsion evenly across the surface, ensuring no bubbles or irregular thickness. 4. Dry the coated sheets in a dark, dust-free space to avoid any unintended exposure or contamination. 5. Once dry, store them in light-proof bags until use. Creating these sheets requires precision and patience, as the uniformity...
0
Q
does dye sublimation add weight to fabric
OrvilleAndrew
AriesWill
Release Time:
August 27, 2024, 1:36 PM
Dye sublimation is a printing method where dye turns into a gas under heat and pressure, bonding directly with fabric fibers. This process embeds the dye into the fabric without leaving a residue on the surface or adding significant weight. Traditional printing techniques might add a slight weight due to the layer of ink on the surface, but sublimation dye becomes part of the fabric itself. The weight increase is negligible, making it an excellent option for applications where maintaining fabric weight and feel is crucial, such as in athletic wear or flags. Additionally, sublimation provides durable, vibrant colors that do not fade or crack over time, enhancing the fabric’s usability without compromising on quality or adding unwanted weight.
0
Q
should i use and inkjet printer for postcards
OrvilleAndrew
ArleneWinifred
Release Time:
August 27, 2024, 9:12 AM
Using an inkjet printer for postcards can be a good idea, especially if you value high print quality and color accuracy. Inkjet printers excel in producing vibrant colors and sharp images, which is essential for postcards that often feature photographs and detailed designs. They can handle a variety of paper types and finishes, allowing for creative freedom with your postcard materials. However, consider the ink cost, which can be higher than laser printers, and ensure your printer can accommodate the thickness of your postcard stock to avoid jams or damage. For short runs or when quality is paramount, an inkjet printer is a solid choice. Just be mindful of ongoing ink costs and compatibility with your desired postcard material.
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