13C NMR Substituent chemical shift (SCS) increments have been determined for the carbonyl carbon of a variety of substituted benzaldehydes and acetophenones. The 13C NMR chemical shift of the carbonyl carbon can be predicted for many di- and trisubstituted benzaldehydes and acetophenones through simple additivity of the SCS increments. The magnitude and sign of the SCS increments have been explored using Hartree-Fock 6-31G* calculations to determine the natural atomic charges of the carbonyl carbon. When a substituent capable of intermolecular hydrogen bonding is present, deviations from additivity on the order of 2 ppm are observed in dilution experiments; deviations of up to 6 ppm can result from intramolecular hydrogen bonding.
Given increasing investments in ecological restoration around the globe, there is a need to develop standards of practice to improve professional training and encourage the highest quality of performance possible. Although professional certification is a mechanism for promoting and improving the profession, until now certification has not been available to individuals who practice ecological restoration. The Society for Ecological Restoration (SER) is launching a professional certification program in early 2017. The program requires professional experience, a knowledge base in five broad subject areas, understanding of the foundations of the profession, and adherence to a code of ethics. The SER certification program will certify both practitioners (Certified Ecological Restoration Practitioners [CERPs]) and practitioners-in-training (Certified Ecological Restoration Practitioners-in-training [CERPITs]).
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