AA

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AA

The second-highest bond rating by S&P and Fitch. AA is subdivided (in decreasing order) into AA+, AA, and AA-. Bonds with AA ratings are investment-grade, meaning that banks are allowed to hold them. AA bonds are low-risk and low-return. The rating is equivalent to an Aa rating by Moody's.

AA

A grade assigned to a debt obligation by a rating agency to indicate a very strong capacity to pay interest and repay principal. Such a rating indicates only slightly lower quality than the top rating of AAA. Also called Aa.
References in periodicals archive ?
Use of oral AAS has been associated with the risk of liver dysfunction.
Propusimos que AAS disminuye la expresion de VEGF-A y de su receptor (VEGFR2), como un posible mecanismo por el cual ejerce su efecto antiangiogenico.
Colorimetric MTT assays were performed 24 h after treatment with or without nanoemulsified of AAs to highlight a possible cytotoxic effect of these emulsions (Table 2).
Within the KCl extractant, the titration (titr) and AAS values compared well:
Review of the literature demonstrates a fairly consistent level of clinical severity and pathological consequence among patients abusing AAS ranging from the age of 18 to 50 with no significant past medical history for a time course under just 1 year and up to as many as 20 years.
According to table 3, the ascorbic acid concentration of 27.5 g / L presented a longer induction time and was statistically different from the control, suggesting that this would be the "best" concentration for AAS use as an antioxidant for the biodiesel.
Andrew Holmes, president of the AAS, admitted that the plan was ambitious.
A new corn variety hasn't received an AAS award since 1988 until this year.
Amino acids (AAs) measured in DBS are routinely used for the diagnosis of inborn errors of metabolism (1) and childhood malnutrition (2), but environmental stresses incurred during sampling, transportation, and storage can impact the short-term (3) and long-term (4) stabilities of some AAs.
Consequently, the use of AAS (alkali-activated slag) processes for the preparation of cementitious materials has gained in popularity, primarily due to lower C[O.sub.2] emissions in its manufacturing process and the improved performance properties of the mortars that it produces [7].