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Surface transient storage (STS) has functional significance in stream ecosystems because it increases solute interaction with sediments. After volume, mean residence time is the most important metric of STS, but it is unclear how this can be measured accurately or related to other timescales and field-measureable parameters. We studied mean residence time of lateral STS in small streams over Reynolds numbers (

The design and synthesis of new donor-acceptor (D-A) substituted conjugated compounds possessing large molecular second-order nonlinear optical (NLO) coefficients are of current interest, primarily because of their potential use in integrated photonic devices.2 To realize such applications, these chromophores must possess large nonresonant second-order molecular non-