Although universal wireless internet and information sent by lasers over thin air may sound appealing, experts say a fiber infrastructure is the immediate future of fast internet. Wallace said fiber was introduced as a material for mainstream communication in the s. Several components are within each fiber-optic cable.
These may be marketed to consumers for nutritional purposes, treatment of various gastrointestinal disordersand for such possible health benefits as lowering cholesterol levels, reducing risk of colon cancerand losing weight. Soluble fiber supplements may be beneficial for Copper versus fiber symptoms of irritable bowel syndromesuch as diarrhea or constipation and abdominal discomfort.
Inulin Chemically defined as oligosaccharides Copper versus fiber naturally in most plants, inulins have nutritional value as carbohydratesor more specifically as fructansa polymer of the natural plant sugar, fructose.
Inulin is typically extracted by manufacturers from enriched plant sources such as chicory roots or Jerusalem artichokes for use in prepared foods. As a prebiotic fermentable fiber, its metabolism by gut flora yields short-chain fatty acids see below which increase absorption of calcium magnesium and iron resulting from upregulation of mineral-transporting genes and their membrane transport proteins within the colon wall.
Among other potential beneficial effects noted above, inulin promotes an increase in the mass and health of intestinal Lactobacillus and Bifidobacterium populations. Often sold as a powder, vegetable gum fibers dissolve easily with no aftertaste. In preliminary clinical trials, they have proven effective for the treatment of irritable bowel syndrome.
Activity in the gut[ edit ] Many molecules that are considered to be "dietary fiber" are so because humans lack the necessary enzymes to split the glycosidic bond and they reach the large intestine.
Many foods contain varying types of dietary fibers, all of which contribute to health in different ways. Dietary fibers make three primary contributions: Some fibers contribute through one primary mechanism.
For instance, cellulose and wheat bran provide excellent bulking effects, but are minimally fermented.
Alternatively, many dietary fibers can contribute to health through more than one of these mechanisms. For instance, psyllium provides bulking as well as viscosity.
Bulking fibers can be soluble i. They absorb water and can significantly increase stool weight and regularity. Most bulking fibers are not fermented or are minimally fermented throughout the intestinal tract. Their use in food formulations is often limited to low levels, due to their viscosity and thickening effects.
Some viscous fibers may also be partially or fully fermented within the intestinal tract guar gum, beta-glucan, glucomannan and pectinsbut some viscous fibers are minimally or not fermented modified cellulose such as methylcellulose and psyllium. Resistant starchinulinfructooligosaccharide and galactooligosaccharide are dietary fibers which are fully fermented.
These include insoluble as well as soluble fibers. This fermentation influences the expression of many genes within the large intestine,  which affect digestive function and lipid and glucose metabolism, as well as the immune system, inflammation and more.
Most semi-solid foods, fiber and fat are a combination of gel matrices which are hydrated or collapsed with microstructural elements, globules, solutions or encapsulating walls. Fresh fruit and vegetables are cellular materials. The cellular structures of fruits and vegetables are foams with a closed cell geometry filled with a gel, surrounded by cell walls which are composites with an amorphous matrix strengthened by complex carbohydrate fibers.
Particle size and interfacial interactions with adjacent matrices affect the mechanical properties of food composites.
Water is the most important plasticizer, particularly in biological systems thereby changing mechanical properties. The variables include chemical structure, polymer concentration, molecular weight, degree of chain branching, the extent of ionization for electrolytessolution pH, ionic strength and temperature.
Cross-linking of different polymers, protein and polysaccharides, either through chemical covalent bonds or cross-links through molecular entanglement or hydrogen or ionic bond cross-linking.A study published in the British Journal of Nutrition indicates that when foods independently known to lower cholesterol, such as almonds, are combined in a healthy way of eating, the beneficial effects are additive.
In this study of 12 patients with elevated LDL cholesterol levels, a diet containing almonds and other nuts, plant sterols (also found in nuts), soy protein, and soluble fiber (in.
Broadcom is the world’s leading provider of fiber optic transmitters, receivers, and transceivers. Broadcom offers unmatched quality with high-volume, cost-effective manufacturing techniques.
Verizon Fios is a service offered by Verizon Communications that provides high speed Internet, digital TV, and telephone service over a single fiber optic cable. Fiber Optics In Communications Fiber has become the communications medium of choice for telephones, cell phones, CATV, LAN backbones, security cameras, industrial networks.
3 thoughts on “ Vinyl Siding Cost vs. Fiber Cement & LP SmartSide ” Jake May 26, at. Hello, We are in the process of getting estimates to replace the old siding on our home in Southeastern Massachusetts.
It’s a two-story house with two porches, one in front of the house and one on a side.
This chart graphically details the %DV that a serving of Black beans provides for each of the nutrients of which it is a good, very good, or excellent source according to our Food Rating System.