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1. Predicting lifetime by degradation tests: A case study of ISO 10995: Predicting lifetime by degradation tests

   https://doi.org/10.1002/qre.2320  

   Fang, Guanqi ; Rigdon, Steven E. ; Pan, Rong ( October 2018 , Quality and Reliability Engineering International)

   null (Ed.)
2. Methodology for Accelerated Inter-Cycle Simulations of Li-ion Battery Degradation with Intra-Cycle Resolved Degradation Mechanisms

   https://doi.org/10.23919/ACC53348.2022.9867654  

   Pannala, Sravan ; Sulzer, Valentin ; Siegel, Jason B. ; Stefanopoulou, Anna G. ( June 2022 , 2022 American Control Conference (ACC))
3. Structural Features Promoting Photocatalytic Degradation of Contaminants of Emerging Concern: Insights into Degradation Mechanism Employing QSA/PR Modeling

   https://doi.org/10.3390/molecules28062443  

   Tomic, Antonija ; Kovacic, Marin ; Kusic, Hrvoje ; Karamanis, Panaghiotis ; Rasulev, Bakhtiyor ; Loncaric Bozic, Ana ( March 2023 , Molecules)

   Although heterogeneous photocatalysis has shown promising results in degradation of contaminants of emerging concern (CECs), the mechanistic implications related to structural diversity of chemicals, affecting oxidative (by HO•) or reductive (by O2•−) degradation pathways are still scarce. In this study, the degradation extents and rates of selected organics in the absence and presence of common scavengers for reactive oxygen species (ROS) generated during photocatalytic treatment were determined. The obtained values were then brought into correlation as K coefficients (MHO•/MO2•−), denoting the ratio of organics degraded by two occurring mechanisms: oxidation and reduction via HO• and O2•−. The compounds possessing K >> 1 favor oxidative degradation over HO•, and vice versa for reductive degradation (i.e., if K << 1 compounds undergo reductive reactions driven by O2•−). Such empirical values were brought into correlation with structural features of CECs, represented by molecular descriptors, employing a quantitative structure activity/property relationship (QSA/PR) modeling. The functional stability and predictive power of the resulting QSA/PR model was confirmed by internal and external cross-validation. The most influential descriptors were found to be the size of the molecule and presence/absence of particular molecular fragments such as C − O and C − Cl bonds; the latter favors HO•-driven reaction, while the former the reductive pathway. The developed QSA/PR models can be considered robust predictive tools for evaluating distribution between degradation mechanisms occurring in photocatalytic treatment.

    

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4. Genetic analyses unravel the crucial role of a horizontally acquired alginate lyase for brown algal biomass degradation by Z obellia galactanivorans: Zobellia galactanivorans alginate degradation

   https://doi.org/10.1111/1462-2920.13699  

   Zhu, Yongtao ; Thomas, François ; Larocque, Robert ; Li, Nan ; Duffieux, Delphine ; Cladière, Lionel ; Souchaud, Florent ; Michel, Gurvan ; McBride, Mark J. ( June 2017 , Environmental Microbiology)
5. Global planning of accelerated degradation tests based on exponential dispersion degradation models

   https://doi.org/10.1002/nav.21923  

   Lee, I‐Chen ; Tseng, Sheng‐Tsaing ; Hong, Yili ( July 2020 , Naval Research Logistics (NRL))

   The accelerated degradation test (ADT) is an efficient tool for assessing the lifetime information of highly reliable products. However, conducting an ADT is very expensive. Therefore, how to conduct a cost‐constrained ADT plan is a great challenging issue for reliability analysts. By taking the experimental cost into consideration, this paper proposes a semi‐analytical procedure to determine the total sample size, testing stress levels, the measurement frequencies, and the number of measurements (within a degradation path) globally under a class of exponential dispersion degradation models. The proposed method is also extended to determine the global planning of a three‐level compromise plan. The advantage of the proposed method not only provides better design insights for conducting an ADT plan, but also provides an efficient algorithm to obtain a cost‐constrained ADT plan, compared with conventional optimal plans by grid search algorithms.

    

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