Microbiological Population Modeling Clause Samples

Microbiological Population Modeling. Biodegradation capabilities have been added to a three-dimensional, multiphase, multicomponent porous media flow model. The model simulates the transport and biodegradation of light nonaqueous phase liquids (LNAPLs) and dense nonaqueous phase liquids (DNAPLs). The biodegradation model describes biological transformation of the organic contaminants originating from NAPL sources and can accommodate multiple substrates, electron acceptors, and biological species. Here we give a brief description of the model assumptions and the capabilities. For more detailed information on model formulation, method of solution, and example simulations to demonstrate its capability, please refer to de Blanc et al. [1996a,b]. UTCHEM simulates the biodegradation of chemical compounds that can serve as substrates (carbon and/or energy sources) for microorganisms. The model simulates the destruction of substrates, the consumption of electron acceptors (e.g., oxygen, nitrate, etc.), and the growth of biomass. Substrates can be biodegraded by free-floating microorganisms in the aqueous phase or by attached biomass present as microcolonies in the manner of Molz et al. [1986]. Multiple substrates, electron acceptors and biological species are accommodated by the model. Important assumptions for the biodegradation model are: 1. Biodegradation reactions occur only in the aqueous phase. 2. Microcolonies are fully penetrated; i.e., there is no internal resistance to mass transport within the attached biomass. 3. Biomass is initially uniformly distributed throughout the porous medium. 4. Biomass is prevented from decaying below a lower limit by metabolism of naturally occurring organic matter unless cometabolic reactions act to reduce the active biomass concentrations below natural levels. 5. The area available for transport of organic constituents into attached biomass is directly proportional to the quantity of biomass present. 6. The number of cells per microcolony, biomass density, and microcolony volume are constant, so that mass per microcolony is also constant. The biodegradation model includes the following features: • Monod, first-order, or instantaneous biodegradation kinetics. • Formation of biodegradation by-products. • External mass-transfer resistances to microcolonies (mass-transfer resistances can be ignored by the user if desired). • Inhibition of biodegradation by electron acceptors and/or toxic substrates. • Nutrient limitations to biodegradation reactions. • First-orde...
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Related to Microbiological Population Modeling

  • Infrastructure Vulnerability Scanning Supplier will scan its internal environments (e.g., servers, network devices, etc.) related to Deliverables monthly and external environments related to Deliverables weekly. Supplier will have a defined process to address any findings but will ensure that any high-risk vulnerabilities are addressed within 30 days.

  • Study Population ‌ Infants who underwent creation of an enterostomy receiving postoperative care and awaiting enterostomy closure: to be assessed for eligibility: n = 201 to be assigned to the study: n = 106 to be analysed: n = 106 Duration of intervention per patient of the intervention group: 6 weeks between enterostomy creation and enterostomy closure Follow-up per patient: 3 months, 6 months and 12 months post enterostomy closure, following enterostomy closure (12-month follow-up only applicable for patients that are recruited early enough to complete this follow-up within the 48 month of overall study duration).

  • Random Drug Testing All employees covered by this Agreement shall be subject to random drug testing in accordance with Appendix D.

  • Screening The Health Plan must work with contracted providers to conduct interperiodic EPSDT screens on RIte Care and all ACA Adult Expansion Population members under age 21 (i.e. 19 and 20-year old under this Agreement) to identify health and developmental problems in conformance with ATTACHMENT ED to this Agreement. Additional screens should be provided as Medically Necessary. At a minimum, these screens must include: • A comprehensive health and developmental history, including health education, nutrition assessment, immunization history, and developmental assessment • Immunizations according to the Rhode Island EPSDT Periodicity Schedule • An unclothed physical examination • Laboratory tests including lead, TB, and newborn screenings as medically indicated • Vision testing • Hearing testing • Dental screening oral examination by PCP as part of a comprehensive examination required before age one (1) • All other medically indicated screening services • And provide EOHHS with a list of established CPT/HCPC codes used to identify all billable services included in the EPSDT schedule.

  • Human Leukocyte Antigen Testing This plan covers human leukocyte antigen testing for A, B, and DR antigens once per member per lifetime to establish a member’s bone marrow transplantation donor suitability in accordance with R.I. General Law §27-20-36. The testing must be performed in a facility that is: • accredited by the American Association of Blood Banks or its successors; and • licensed under the Clinical Laboratory Improvement Act as it may be amended from time to time. At the time of testing, the person being tested must complete and sign an informed consent form that also authorizes the results of the test to be used for participation in the National Marrow Donor program.