Emulsification–solvent diffusion Sample Clauses

Emulsification–solvent diffusion. The emulsification solvent diffusion or emulsification-solvent displacement method is the most widely used method for preparing nanoparticles due to several advantages. These include high drug entrapment efficiency for poorly water soluble drugs, narrow particle size distribution, high batch-to-batch reproducibility, no requirement for homogenization, simplicity, ease of scale up and rapid organic solvent extraction (Xxxxxxx-Xxxxxx et al., 2006). The drug and polymer are dissolved in a partially water soluble solvent. The organic phase is saturated with water to ensure the initial thermodynamic equilibrium. It is then diluted with an extensive amount of pure water to facilitate diffusion of the organic solvent from the organic phase droplets leading to the precipitation of the polymer. The aqueous phase may contain surfactants while the organic phase sometimes contains an emulsifier. Finally, the solvent is eliminated by evaporation or filtration, depending upon the boiling point. Several parameters can affect the size of the nanoparticles such as miscibility of the water with the organic solvent, stirring rate, concentration of the surfactant(s) and concentration of the polymer is the organic phase.
Sample 1
AutoNDA by SimpleDocs

Related to Emulsification–solvent diffusion

  • GARBAGE DISPOSAL, RECYCLING, AND BIODEGRADABLE MATERIALS A. Concessionaire shall be responsible for maintaining the cleanliness of the Concession Premises. Concessionaire shall ensure placement of all garbage and trash generated by the Concession Operation in designated containers and that said containers are emptied daily, or as more frequently required by Department, at a location within the Area designated by Department. Disposal costs from this latter location shall be borne by Department. Concessionaire shall provide such additional trash containers as may be required to keep the immediate Concession Premises clean at all times. The type of trash containers provided by Concessionaire shall be approved by Department prior to use.

  • Loop Provisioning Involving Integrated Digital Loop Carriers 2.6.1 Where InterGlobe has requested an Unbundled Loop and BellSouth uses IDLC systems to provide the local service to the End User and BellSouth has a suitable alternate facility available, BellSouth will make such alternative facilities available to InterGlobe. If a suitable alternative facility is not available, then to the extent it is technically feasible, BellSouth will implement one of the following alternative arrangements for InterGlobe (e.g. hairpinning):

  • Tuberculosis Examination The examination shall consist of an approved intradermal tuberculosis test, which, if positive, shall be followed by an X-ray of the lungs. Nothing in Sections 5163 to 5163.2, inclusive, shall prevent the governing body of any city or county, upon recommendation of the local health officer, from establishing a rule requiring a more extensive or more frequent examination than required by Section 5163 and this section. § 5163.2. Technician taking X-ray film; Interpretation of X-ray The X-ray film may be taken by a competent and qualified X-ray technician if the X-ray film is subsequently interpreted by a licensed physician and surgeon.

  • First sampling In the first sampling four lamps are selected at random. The first sample of two is marked A, the second sample of two is marked B.

  • Rhytidectomy Scar revision, regardless of symptoms. • Sclerotherapy for spider veins. • Skin tag removal. • Subcutaneous injection of filling material. • Suction assisted Lipectomy. • Tattooing or tattoo removal except tattooing of the nipple/areola related to a mastectomy. • Treatment of vitiligo. • Standby services of an assistant surgeon or anesthesiologist. • Orthodontic services related to orthognathic surgery. • Cosmetic procedures when performed primarily: o to refine or reshape body structures or dental structures that are not functionally impaired; o to improve appearance or self-esteem; or o for other psychological, psychiatric or emotional reasons. • Drugs, biological products, hospital charges, pathology, radiology fees and charges for surgeons, assistant surgeons, attending physicians and any other incidental services, which are related to cosmetic surgery.

  • Direct Trunked Transport 7.3.2.1 Either Party may elect to purchase direct trunked transport from the other Party.

  • Rippable Rock Rippable rock is defined as any material that can be ripped with a single-tooth hydraulic ripper drawn by a crawler tractor having a minimum draw bar pull rated at not less than 56,000 pounds (Caterpillar D-8K or equivalent) and occupies an original volume of at least one cubic yard.

  • Net Metering If you generate electricity from a renewable generating facility to offset your electricity consumption and/or use net metering at any time during the term of this Agreement, you must notify Starion.

  • Potable Water Contractor shall provide potable water and ice for the Stage 2 Site use, and ensure that a safe and plentiful supply of potable water and ice is available for all activities on the Stage 2 Site until Substantial Completion of Subproject 3. The water and ice for human consumption shall be of suitable quality.

  • Heavy Blocks An employee shall not be required to lift a building block in excess of 20 kg in weight unless such employee is provided with a mechanical aid or with an assisting employee; provided that an employee shall not to manually lift any building block in excess of 20 kg weight to a height of more than 4 feet (1.2m) above the working platform.

Draft better contracts in just 5 minutes Get the weekly Law Insider newsletter packed with expert videos, webinars, ebooks, and more!