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  • aqueous
  • Microspheres of acrolein homopolymers and copolymer with hydrophillic comonomers such as methacrylic acid and/or hydroxyethylmethacrylate are prepared by cobalt gamma irradiation of dilute aqueous solutions of the monomers in presence of suspending agents, especially alkyl sulfates such as sodium dodecyl. (google.com)
  • On addition of the microspheres to waste aqueous streams containing dissolved ions, the hydroxyl and amine functionality of the chitosan forms chelates binding heavy metal cations such as lead, copper, and mercury and the chelates in turn bind anions such as nitrate, fluoride, phosphate and borate. (google.co.uk)
  • These microspheres are packaged as 2.5% aqueous suspensions. (polysciences.com)
  • When present in certain concentrations in aqueous solutions, proteinoids form small microspheres. (wikipedia.org)
  • photonic
  • Microspheres have been used to produce focal regions, known as photonic nanojets and whose sizes are below the micrometric scale. (wikipedia.org)
  • A measurable enhancement of the backscattered light in the visible range was obtained when a gold nanoparticle was placed inside the photonic nanojet region produced by a dielectric microsphere with a 4.4 μm diameter. (wikipedia.org)
  • Keywords: excimer, MDR, microcavity, microsphere, resonators, silicon photonics, WGM I. Introduction The need for low-cost photonic devices has stimulated a significant amount of research in silicon photonics. (slideshare.net)
  • resonators
  • Microspheres made of high quality optical glass, can be produced for research on the field of optical resonators or cavities. (wikipedia.org)
  • The experimentally measured quality factors are limited by the sensitivity of the experimental setup, however, the microsphere quality factor is several orders of magnitude higher than current micro-ring resonators. (slideshare.net)
  • optical
  • A use of nanojets produced by transparent microspheres in order to excite optical active materials, under upconversion processes with different numbers of excitation photons, has been analyzed as well. (wikipedia.org)
  • Recently, microspheres are gaining an important place in the optical microcavity resonator community due to their high quality factor morphology-dependent resonances (MDRs). (slideshare.net)
  • The NANOPSIS M is the world's first super-resolution wide-field optical microscope that can resolve objects down to 70nm.Powered by SMAL (Super Resolution Microsphere Amplifying Lens) The microscope is the first commercial system to use microspheres with no need for direct contact with the sample. (wikipedia.org)
  • diameter
  • The expanded microspheres are white, can be 15 to 90 micrometers in average diameter and can have a density of 15 to 70 kg/m³. (wikipedia.org)
  • Glass microspheres are usually between 1 and 1000 micrometers in diameter, although the sizes can range from 100 nanometers to 5 millimeters in diameter. (wikipedia.org)
  • 5. A composition according to claim 1 in which the microspheres contain from 1 to 25% metal and have a diameter from 500 angstroms to 1 micron. (google.co.uk)
  • Embosphere Microspheres exhibit a consistent cross-sectional diameter for targeted delivery. (merit.com)
  • citation needed
  • citation needed] Binary fission (dividing into two daughter microspheres). (wikipedia.org)
  • citation needed] Fox thought that the microspheres may have provided a cell compartment within which organic molecules could have become concentrated and protected from the outside environment during the process of chemical evolution. (wikipedia.org)
  • magnetic
  • MagPlex Microspheres are magnetic, and with the use of a magnetic separator , they can be separated from solution quickly and easily. (luminexcorp.com)
  • The chitosan precipitates on the granules to form microspheres containing the magnetic granules. (google.co.uk)
  • The present invention relates to functional magnetic microspheres useful in the removal of soluble toxic materials such as lead, copper, mercury cations and nitrate, flouride, phosphate and borate anions from water. (google.co.uk)
  • polymer
  • Microspheres are also used in composites to fill polymer resins for specific characteristics such as weight, sandability and sealing surfaces. (wikipedia.org)
  • After crosslinking of the structural polymer has taken place, the template polymer may be removed to form the finished microspheres. (google.com)
  • CeloNova's Embozene(TM) Microspheres consist of a hydrogel core and an exterior shell made from Polyzene®-F, CeloNova's proprietary polymer which is known to be anti-inflammatory and bacterial-resistant. (medgadget.com)
  • From the outset, we took a different approach to developing our Embozene(TM) Microspheres by asking physicians and medical scientists for the qualities and characteristics that the ideal embolic device should have," said Thomas A. Gordy, President and Chief Executive Officer, CeloNova BioSciences, Inc. "Then, we engineered Embozene(TM) Microspheres to have those properties, which are made even better with Polyzene®-F, our proprietary polymer. (medgadget.com)
  • Glass microspheres, polymer microspheres and ceramic microspheres are commercially available. (wikipedia.org)
  • tumor
  • After being injected into a vessel supplying the tumor, the microspheres form a platelet-rich clot interrupting its blood supply. (medgadget.com)
  • Embosphere Microspheres are available in six size ranges to allow physicians to target the microvasculature of the tumor and shut down the feeder network while maintaining patency of the major artery feeding the organ. (merit.com)
  • Given the known risk of recurrence in patients with persistent tumor enhancement after UAE, it is concluded that tris-acryl gelatin microspheres should be the preferred agent for UAE at this time. (merit.com)
  • The treatment involves injecting tiny microspheres of radioactive material into the arteries that supply the tumor. (wikipedia.org)
  • Once the branch of the hepatic artery supplying the tumor is identified and the tip of the catheter is selectively placed within the artery, the 90Y microspheres are infused. (wikipedia.org)
  • The radiation dose absorbed is dependent on microsphere distribution within the tumor vascularization. (wikipedia.org)
  • filler
  • The expanded microspheres are used as a lightweight filler in composite materials such as cultured marble, in waterborne paints and crack fillers/joint compound. (wikipedia.org)
  • When utilizing microspheres as a filler for standard mixing and dispensing machines, a breakage rate of up to 80% can occur, depending upon factors such as pump choice, material viscosity, material agitation, and temperature. (wikipedia.org)
  • embolic
  • Embosphere Microspheres are the most clinically studied and clinically proven round embolic, providing consistent and predictable results for effective embolization. (merit.com)
  • Classified as an embolic device, the microspheres are based on the company's proprietary material poly[bis(trifluroexthoxy)phosphazene], or Polyzene®-F, described as "lubricious and flexible," as well as "versatile, durable, and highly biocompatible. (medgadget.com)
  • Embozene Microspheres are an innovative advance in embolic technology that has been well received outside the U.S.," said John C. Lipman, MD, FSIR, Founder and CEO of the Atlanta Interventional Institute and Director of the Center for Image-Guided Medicine at Emory-Adventist Hospital Atlanta. (medgadget.com)
  • Embozene(TM) Microspheres maintain suspension better than any other embolic I've seen," said Dr. Lipman. (medgadget.com)
  • catheter
  • Embozene(TM) Microspheres are precisely calibrated, they retain their shape after passing through a catheter, and they can stay in suspension for an extended time. (medgadget.com)
  • The catheter is moved through the hepatic artery and positioned by the interventional radiologist to allow for targeted infusion of the SIR-Spheres microspheres to the site of the tumors. (wikipedia.org)
  • Embolization
  • Embosphere Microspheres are indicated for use in embolization of arteriovenous malformations, hypervascular tumors, symptomatic uterine fibroids, and the prostate arteries for relief of symptoms related to Benign Prostatic Hyperplasia (BPH). (merit.com)
  • Because they are non-aggregating, Embosphere Microspheres distribute predictably after embolization. (merit.com)
  • Spherical Polyvinyl Alcohol Versus Trisacryl Gelatin Microspheres for Uterine Artery Embolization for Leiomyomas: Results of a Limited Randomized Comparative Study. (merit.com)
  • Glass
  • Glass microspheres can be made by heating tiny droplets of dissolved water glass in a process known as ultrasonic spray pyrolysis (USP), and properties can be improved somewhat by using a chemical treatment to remove some of the sodium. (wikipedia.org)
  • Glass microspheres are also produced as waste product in coal-fired power stations. (wikipedia.org)
  • Patients got a total of 120 Gy of radiation in one or two doses from the glass encased microspheres, which Salem said did not travel beyond the liver in any cases. (medpagetoday.com)
  • Cf. glass microspheres. (wikipedia.org)
  • Glass microspheres are FDA approved under a humanitarian device exemption for hepatocellular carcinoma (HCC). (wikipedia.org)
  • A recent single-blinded, prospective randomized trial was the first to compare transarterial chemoembolization (TACE) and Y-90 radioembolization with glass microspheres, with a primary endpoint of time to progression of HCC. (wikipedia.org)
  • liver
  • Sirtex Medical Limited is an Australian-based medical device company, providing a radioactive treatment for inoperable liver cancer called SIR-Spheres microspheres. (wikipedia.org)
  • When SIR-Spheres microspheres are used to treat liver cancer, the treatment is called selective internal radiation therapy (called SIRT). (wikipedia.org)
  • form
  • The microspheres directly form antibody adducts without agglomeration. (google.com)
  • 20. A method according to claim 1 further including the step of reacting the recovered microspheres with a compound of the formula: ##STR4## where R l is hydrogen or a hydrocarbon group, R Z is hydroxyl or R is selected from aliphatic or aromatic and Z is amine, hydroxyl or carboxyl to form an adduct. (google.com)
  • Currently, the typical methods used to form microspheres include forcing molten silicon out of a nozzle or melting the end of a fiber . (slideshare.net)
  • RESEARCH
  • Previous research has demonstrated experimentally and with simulations the use of microspheres in order to increase the signal intensity obtained in different experiments. (wikipedia.org)
  • dependent
  • Silicon microspheres with high quality factor morphology dependent resonances are used for resonant detection and filtering of light in the near infrared. (slideshare.net)
  • small
  • Just a small amount of spacer grade monodisperse microspheres can create a controlled gap, as well as define and maintain specified bond line thickness. (wikipedia.org)
  • Microsphere was a small British software company formed in Muswell Hill, north London in 1982 by husband and wife team David and Helen Reidy, best known for several popular computer games in the mid 1980s. (wikipedia.org)
  • materials
  • Microspheres can be manufactured from various natural and synthetic materials. (wikipedia.org)
  • In this area UMG specializes in the processing, production and sale of microspheres, dry ash, an ash and slag mix, granulated slag and other ash and slag materials (ASM) for ceramic, construction, cement, chemical, and oil and gas sectors. (wikipedia.org)