Complications after pancreatic surgery are common and can be life-threatening. One of the most serious yet common complications is postoperative pancreatic fistula. This condition is diagnosed based on increased concentrations ...
Feb 21, 2024
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For millennia, humans have used natural materials—such as plants, animals and minerals—to imbue fabrics with vibrant colors. But synthetic dyes, first developed in the mid-19th century, have since displaced this age-old ...
Feb 12, 2024
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Researchers led by Professor Steve Watson and Dr. Eleyna Martin from the Institute of Cardiovascular Sciences at the University of Birmingham have delivered a breakthrough for thrombosis researchers, by producing the first ...
Oct 12, 2023
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In some patients, infection with the pandemic virus SARS-CoV-2 can trigger a dangerous immune response in hardened fatty deposits (plaques) lining the heart's largest blood vessels, a new study shows.
Sep 28, 2023
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Researchers at Masaryk University, Czech Republic, have innovated a technique to track bone development, growth dynamics and healing in a mouse model. In their paper, "Spatiotemporal monitoring of hard tissue development ...
Researchers have proposed using emulsion microgels for drug delivery to the bladder. This promises to make the treatment of urinary tract infections more effective and less painful. The microgels contain whey protein capable ...
Jul 27, 2023
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In a world first, University of Ottawa scientists have introduced a metal-free MRI dye capable of mapping kidney function with unprecedented accuracy. This technique will modernize urology, allow for more personalized care ...
Jul 13, 2023
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A new technique designed to allow surgeons to identify and remove residual tumor tissue during breast-conserving surgery showed promising results in a multi-center trial led by investigators from the Mass General Cancer Center, ...
May 3, 2023
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The latest version of a tool named after a 1980s cartoon robot can now detect small fluctuations in signals passing through neurons, enabling greater insight into how brain cells communicate. The new Voltron2, developed by ...
Apr 3, 2023
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Surgical tumor removal remains one of the most common procedures during cancer treatment, with about 45% of cancer patients undergoing this surgery at some point. Thanks to recent progress in imaging and biochemical technologies, ...
Mar 29, 2023
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A dye is a colored substance that has an affinity to the substrate to which it is being applied. The dye is generally applied in an aqueous solution, and requires a mordant to improve the fastness of the dye on the fiber.
Both dyes and pigments appear to be colored because they absorb some wavelengths of light more than others. In contrast with a dye, a pigment generally is insoluble, and has no affinity for the substrate. Some dyes can be precipitated with an inert salt to produce a lake pigment, and based on the salt used they could be aluminum lake, calcium lake or barium lake pigments.
Dyed flax fibers have been found in the Republic of Georgia dated back in a prehistoric cave to 36,000 BP. Archaeological evidence shows that, particularly in India and Phoenicia, dyeing has been widely carried out for over 5000 years. The dyes were obtained from animal, vegetable or mineral origin, with no or very little processing. By far the greatest source of dyes has been from the plant kingdom, notably roots, berries, bark, leaves and wood, but only a few have ever been used on a commercial scale.
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