Lethal Concentration (LC) definition

Lethal Concentration (LC) means the point estimate of the toxicant concentration that would be lethal to a given percentage of test organisms during a specific period.
Lethal Concentration (LC) means, for Acute Toxicity Testing, the statistical estimate of the toxicant concentration producing death of the test organisms. LC is usually defined as the median (50 percent) lethal concentration, LC50, i.e. concentration killing 50 percent of tested organisms at a specific time of exposure, for example 96-hour LC50.

Examples of Lethal Concentration (LC) in a sentence

  • The individual pyr- ethroids showed similar relative toxicities for both the growth impairment and mortality endpoints.A roughly 40% biomass reduction compared to control amphipods was required to detect an effect in aKoc data from Laskowski [4].b Lethal concentration (LC) data from water-only exposures from Solomon et al.

  • Lethal concentration (LC): Concentration of a substance in an environmental medium that causes death following a certain period of exposure (Duffus et al., 2007; id).Lethal concentration x%: Corresponds to the concentration of a tested substance causing x% lethality during a specified time interval3.

  • Lethal concentration (LC) is the toxicant concentration producing death of a test organism.

  • By contrast, for an autonomous vehicle equipped with event cameras, the problem is typically how to find useful signals in potentially millions of events per second.

Related to Lethal Concentration (LC)

  • Alcohol concentration means the number of grams of alcohol per:

  • Excess Concentration means the sum of the following amounts, without duplication:

  • Baseline concentration means that ambient concentration level that exists in the baseline area at the time of the applicable minor source baseline date. A baseline concentration is deter- mined for each pollutant for which a minor source baseline date is estab- lished and shall include:

  • Net concentration means the difference between the concentration of a given substance in a sample taken of the discharge and the concentration of the same substances in a sample taken at the intake which supplies water to the given process. For the purpose of this definition, samples that are taken to determine the net concentration shall always be 24-hour composite samples made up of at least six increments taken at regular intervals throughout the plant day.

  • median concentration means that half of the homes in a county are expected to be below this value and half to be above it. All houses contain some radon, and a few houses will contain much more than the median concentration. The only way to accurately assess long-term exposure to radon in a specific house is through long-term testing (sampling the indoor air for a year or more). The EPA recommends that all homes be tested for radon. Columbia University's "Radon Project" website offers help to homeowners in assessing the cost vs. benefit of testing a specific house for radon or modifying it for radon reduction (see http://www.stat.columbia.edu/~radon/).

  • Concentration means the weight of any given material present in a unit volume of liquid. Unless otherwise indicated in this permit, concentration values shall be expressed in milligrams per liter (mg/l).

  • Excess Concentration Amount means, on any date of determination, the sum of, without duplication,

  • Background concentration means such concentration of that substance as is present in:

  • In-stream Waste Concentration or "(IWC)" means the concentration of a discharge in the receiving water after mixing has occurred in the allocated zone of influence.

  • Obligor Concentration Limit means, at any time, in relation to the aggregate Outstanding Balance of Receivables owed by any single Obligor and its Affiliates (if any), the applicable concentration limit shall be determined as follows for Obligors who have short term unsecured debt ratings currently assigned to them by S&P and Moody's (or in the absence thereof, the equivalent long term unsecured senior debt ratings), the applicable concentration limit shall be determined according to the following table: Allowable % of S&P Rating Xxxxx'x Rating Eligible Receivables -------------------------------------------------------------------------------------------- A-1+ P-1 10% -------------------------------------------------------------------------------------------- A-1 P-1 8% -------------------------------------------------------------------------------------------- A-2 P-2 6% -------------------------------------------------------------------------------------------- A-3 P-3 3% -------------------------------------------------------------------------------------------- Below A-3 or Not Rated by either Below P-3 or Not Rated by S&P or Moody's either S&P or Moody's 2.5% -------------------------------------------------------------------------------------------- ; PROVIDED, HOWEVER, that (a) if any Obligor has a split rating, the applicable rating will be the lower of the two, (b) if any Obligor is not rated by either S&P or Moody's, the applicable 62 Obligor Concentration Limit shall be the one set forth in the last line of the table above, and (c) subject to satisfaction of the Rating Agency Condition or an increase in the percentage set forth in clause (a)(i) of the definition of "REQUIRED RESERVE," upon the Borrower's request from time to time, the Administrative Agent may agree to a higher percentage of Eligible Receivables for a particular Obligor and its Affiliates (each such higher percentage, a "SPECIAL CONCENTRATION LIMIT"), it being understood that any Special Concentration Limit may be cancelled by the Administrative Agent upon five Business Days' notice to the Loan Parties. The Administrative Agent hereby agrees that International Business Machines Corp. shall have a Special Concentration Limit of 11%.

  • Critical Test Concentration or "(CTC)" means the specified effluent dilution at which the Permittee is to conduct a single-concentration Aquatic Toxicity Test.

  • Maximum Concentration Level Assessment means the Maximum Concentration Level Assessment for the purposes of a Basic Comprehensive Certificate of Approval, described in the Basic Comprehensive User Guide, prepared by a Toxicologist using currently available toxicological information, that demonstrates that the concentration at any Point of Impingement for a Compound of Concern that does not have a Ministry Point of Impingement Limit is not likely to cause an adverse effect as defined by the EPA. The concentration at Point of Impingement for a Compound of Concern must be calculated in accordance with O. Reg. 419/05.

  • Concentration Limit means at any time for any Obligor, the product of (i) such Obligor’s Specified Concentration Percentage, times (ii) the aggregate Unpaid Balance of the Eligible Receivables included in the Receivables Pool at the time of determination.

  • Concentration Limits has the meaning given to such term in Section 5.03(a) hereof.

  • Derived air concentration (DAC) means the concentration of a given radionuclide in air which, if breathed by the reference man for a working year of 2,000 hours under conditions of light work, results in an intake of one ALI. For purposes of these regulations, the condition of light work is an inhalation rate of 1.2 cubic meters of air per hour for 2,000 hours in a year. DAC values are given in Part 4, Appendix 4B, Table 4B1, Column 3.

  • Concentration Percentage means (i) for any Group A Obligor, 10.00%, (ii) for any Group B Obligor, 8.00%, (iii) for any Group C Obligor, 6.00% and (iv) for any Group D Obligor, 4.00%.

  • Concentration Accounts has the meaning ascribed to it in Annex C.

  • Concentration Reserve Percentage means, at any time of determination, the largest of: (a) the sum of the five (5) largest Obligor Percentages of the Group D Obligors, (b) the sum of the three (3) largest Obligor Percentages of the Group C Obligors, (c) the sum of the two (2) largest Obligor Percentages of the Group B Obligors and (d) the largest Obligor Percentage of the Group A Obligors.

  • Daily Concentration means the concentration of a substance as measured in a daily composite sample, or, arithmetic average of all grab sample results defining a grab sample average.

  • iron ore concentrates means products (whether in pellet or other form) resulting from secondary processing but does not include metallised agglomerates;

  • Residual disinfectant concentration means the concentration of disinfectant measured in mg/L in a representative sample of water.

  • Concentration Limitations has the meaning set forth in Schedule 4.

  • Concentration Account has the meaning provided in Section 6.13(c).

  • Concentration Account Agreement as defined in subsection 4.16(b).

  • Cannabis concentrate means cannabis that has undergone a process to concentrate one or more active cannabinoids, thereby increasing the product’s potency. Resin from granular trichomes from a cannabis plant is a concentrate for purposes of this division. A cannabis concentrate is not considered food, as defined by Section 109935 of the Health and Safety Code, or a drug, as defined by Section 109925 of the Health and Safety Code.

  • Marijuana concentrate means any type of marijuana product consisting wholly or in part of