Science & Technology
-
Geophysical Methods Introduction
Brief into to geophysical methods in the About panel
-
Frequency Domain Electromagnetic (FDEM)
In the frequency domain method, the transmitter emits a sinusoidally varying current at a specific frequency.
-
Environmental Geophysics
The Environmental Geophysics website features geophysical methods, terms and references; forward and inverse geophysical models for download; and a decision support tool to guide geophysical method selection for a variety of environmental applications.
-
Seismic Refraction
seismic refraction basic concepts
-
Nuclear Methods
surface nuclear methods discription
-
Time-Domain/Transient Electromagnetics (TDEM/TEM)
Time-Domain/Transient Electromagnetics (TDEM/TEM) surface geophysical method
-
Antimicrobial Testing Methods & Procedures: MB-05-17
The methodology described in this SOP is used to evaluate the performance of liquid disinfectants against the prescribed test microbes.
-
Antimicrobial Testing Methods & Procedures: MB-03-09
This protocol describes the procedures for the preparation of carriers for the following methods: the AOAC UDM, AOAC Tuberculocidal Activity of Disinfectants Test, AOAC GSPT, the Disinfectant Towelette Test, and the AOAC SAT.
-
Climate Change Indicators: Ice Sheets
This indicator examines the balance between snow accumulation and melting in the ice sheets that cover Greenland and Antarctica.
-
Antimicrobial Testing Methods & Procedures: MB-21-05
Information about ATMP - SOP Quantitative Three Step Method for Measuring the Efficacy of Liquid Sporicides against Spores of Bacillus subtilis on Hard Non-porous and Porous Surfaces - MB-21-04
-
Antimicrobial Testing Methods & Procedures: MB-19-06
Preparing a Pseudomonas aeruginosa or Staphylococcus aureus Biofilm using the CDC Biofilm Reactor
-
Antimicrobial Testing Methods & Procedures: MB-25-05
OECD Quantitative Method for Evaluating Bactericidal and Mycobactericidal Activity of Microbicides Used on Hard, Non-Porous Surfaces MB-25
-
Antimicrobial Testing Methods & Procedures: MB-10-08
Describes the procedures used to log-in, prepare, and evaluate the quality of media and reagents used in microbiological assays by the Microbiology Laboratory Branch (MLB), for use in the quality evaluation of media and reagents used by MLB.
-
Antimicrobial Testing Methods & Procedures: MB-09-08
Describes the methodology used to determine the efficacy of towelette-based disinfectants against microbes on hard surfaces. The test is based on AOAC Method 961.02 (Germicidal Spray Products as Disinfectants).
-
Antimicrobial Testing Methods & Procedures: MB-07-10
Describes the methodology used to determine tuberculocidal activity of disinfectants labeled to treat hard non-porous surfaces against Mycobacterium bovis (BCG).
-
Antimicrobial Testing Methods & Procedures: MB-23-05
Information about ATMP - SOP Disinfectant Towelette Test: Testing of Mycobacterium bovis (BCG) - MB-23-03
-
Antimicrobial Testing Methods & Procedures: MB-22-06
Information about ATMP - SOP Disinfectant Product Preparation and Sampling Procedures - MB-22-04
-
Antimicrobial Testing Methods & Procedures: MB-11-07
Describes the methodology for determining the effectiveness of a neutralizer used when testing the tuberculocidal activity of disinfectants against Mycobacterium bovis (BCG) on hard surfaces using liquid, sprays, or towelettes.
-
Antimicrobial Testing Methods & Procedures: MB-06-10
Describes the germicidal spray products test methodology to determine efficacy of spray formulations against microbes on hard surfaces.
-
Antimicrobial Testing Methods & Procedures: MB-20-04
The standard operating procedure describing the Single Tube Method for Determining the Efficacy of Disinfectants against Bacterial Biofilm.