Negative Control Sample Clauses

Negative Control. A model carbon black particulate sample (M120) was used as the negative control. It has been characterised to be 50 nm in diameter with an associated surface area of 32m2g-1 [277]. Electron-probe X-ray microanalysis studies have demonstrated that M120 is composed of carbon black, chloride and sulphur with no evidence of surface associated metals [302]. Therefore, potential confounding effects of the particle surface and size on antioxidant quantification due to absorbance were investigated through the use of the negative control concurrently to the PM testing. The preparation was the same as the positive control (see section on NIST), that is, a 500µg/ml stock was diluted to 55.56µg/ml solution for the exposures. Results demonstrated that the antioxidant depletion caused by M120 in the 2 hour exposure did not differ from the oxidation caused by the background controls (Figure 18). Background 0xidation Disc cut oxidation M120 Carry over effects NIST *** 200 Concentration (µM) 150 100 50 0 30 60 90 120 0 30 60 90 120 0 30 60 90 120 0 30 60 90 120 0 30 60 90 120 0 Time (mins) Figure 18: Summary of Control Results in the Particulate Matter Exposures The diagram presents the overall ascorbate depletion mean + SD by the different controls, NIST caused the highest antioxidant depletion (p<0.001), while the remaining controls did not differ from the background oxidation control. Therefore, it can be concluded that the disc cut incubation and the related methods (carry over test) did not confound the results.
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Negative Control 
Sample 1

Related to Negative Control

  • AFFIRMATIVE AND NEGATIVE COVENANTS The Borrower covenants and agrees that, so long as any Bank has any Commitment hereunder or any Obligations remain unpaid:

  • Negative Amortization To the extent any Mortgage Loan provides for negative amortization, such as a GPM or GPARM Loan, the Servicer must assure that the Unpaid Principal Balance of such Mortgage Loan never exceeds the related Maximum Negative Amortization Amount, and that the related Monthly Payment is recast as provided for in the Mortgage Note such that the balance fully amortizes within the remaining term of such Mortgage Loan.

  • Negative Covenant Except as otherwise expressly permitted by this Agreement, between the date of this Agreement and the Closing Date, Sellers will not, and will cause the Company not to, without the prior consent of Buyer, take any affirmative action, or fail to take any reasonable action within their or its control, as a result of which any of the changes or events listed in Section 3.16 is likely to occur.

  • Certain Negative Covenants Each of the Borrowers covenants and agrees that, so long as any Loan, Unpaid Reimbursement Obligation, Letter of Credit or Note is outstanding or any Lender has any obligation to make any Loans or the Administrative Agent has any obligations to issue, extend or renew any Letters of Credit:

  • COMPANY'S NEGATIVE COVENANTS Company covenants and agrees that, so long as any of the Commitments hereunder shall remain in effect and until payment in full of all of the Loans and other Obligations and the cancellation or expiration of all Letters of Credit, unless Requisite Lenders shall otherwise give prior written consent, Company shall perform, and shall cause each of its Subsidiaries to perform, all covenants in this Section 7.

  • NEGATIVE COVENANTS Until the Commitments have expired or terminated and the principal of and interest on each Loan and all fees payable hereunder have been paid in full and all Letters of Credit have expired or terminated and all LC Disbursements shall have been reimbursed, the Borrower covenants and agrees with the Lenders that:

  • Negative Capital Accounts No Member shall be required to pay to any other Member or the Company any deficit or negative balance which may exist from time to time in such Member’s Capital Account (including upon and after dissolution of the Company).

  • Supplemental Credit Enhancement Event Upon the occurrence of a Supplemental Credit Enhancement Event, Greenwood as Servicer shall, within 60 days of notice from Standard & Poor's of the withdrawal or downgrade (or such longer period as may be agreed to by Standard & Poor's), arrange for the payment of the Supplemental Credit Enhancement Amount, if any, by a Person other than Greenwood (or from Series Excess Servicing) to the Trustee as administrator of the Credit Enhancement for application in accordance with the provisions of the Credit Enhancement Agreement. Both the form and the provider of the Supplemental Credit Enhancement Amount, if any, shall be determined at the time it is to be paid; provided, that the Master Servicer shall have received confirmation from Standard & Poor's that the arrangements with respect to the Supplemental Credit Enhancement Amount, if any, will not result in the rating of the Investor Certificates of the Series established hereby being withdrawn or lowered. In addition to the foregoing, the Master Servicer shall notify Moodx'x xx the occurrence of a Supplemental Credit Enhancement Event as soon as practicable after such occurrence, and shall notify Moodx'x xx advance of its implementation of the form and provider of the Supplemental Credit Enhancement Amount, if any.

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