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1. Baltimore Ecosystem Study: Riparian vegetation data - 11 of 11 - species lists

   https://doi.org/10.6073/pasta/fbd65b79a956484059d2e9c27741c9e6  

   Brush, Grace (January 2020, Environmental Data Initiative)

   This is one of 11 datasets generated in a study of riparian vegetation in the Baltimore Ecosystem Study from 1999-2004. Comparisons of vegetation between the rural/suburban (upper) and urban (lower) sections of the watershed show distinct patterns across an urban to rural gradient. In the lower, more urban section of the watershed, wetland tree species are either absent or occur as small stems while upland species are abundant, in mixed sizes. A comparison of the number of wetland and upland species in the mostly urbanized Gwynns Falls riparian zone with non-urbanized Piedmont floodplains throughout Maryland shows approximately twice as many upland species in the urban floodplain than in non-urbanized floodplains. The majority of shrubs in riparian zones through the Gwynns Falls are upland species. For herbaceous species, frequencies of upland and wetland species are about equal in the upper and middle regions of the watershed, but upland species are more common in the more urban lower floodplains by a factor of greater than two. 

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2. A new mechanism for nucleation of {11-22}〈11-2-3〉twinning via interaction of {11-21}〈11-2-6〉twin variants in hexagonal close-packed metals

   https://doi.org/10.1016/j.actamat.2024.120480  

   Wang, Yuyang; Li, Bin; Liao, Yiliang (January 2025, Acta Materialia)
3. Shear-induced crystallization of polyamide 11

   https://doi.org/10.1007/s00397-021-01264-6  

   Jariyavidyanont, Katalee; Mallardo, Salvatore; Cerruti, Pierfrancesco; Di Lorenzo, Maria Laura; Boldt, Regine; Rhoades, Alicyn M.; Androsch, René (May 2021, Rheologica Acta)

   Abstract Shear-induced formation of crystal nuclei in polyamide 11 (PA 11) was studied using a conventional parallel-plate rheometer. Crystallization of PA 11 after shearing the melt at different rates for 60 s was followed by the evolution of the complex viscosity. The sheared samples showed in an optical microscope a gradient structure along the radius, due to the increasing shear rate from the center to the edge. The critical shear rate for shear-induced formation of nuclei was identified at the position where a distinct change of the semicrystalline superstructure is observed, being at around 1 to 2 s −1 . Below this threshold, a space-filled spherulitic superstructure developed as in quiescent-melt crystallization. Above this value, after shearing at rates between 1 and 5 s −1 , an increased number of point-like nuclei was detected, connected with formation of randomly oriented crystals. Shearing the melt at even higher rates led to a further increase of the nuclei number and growth of crystals oriented such that the chain axis is in parallel to the direction of flow. In addition, optical microscopy confirmed formation of long fibrillar structures after shearing at such condition. The critical specific work of flow of PA 11 was calculated to allow a comparison with that of polyamide 66 (PA 66). This comparison showed that in the case of PA 11 more work for shear-induced formation of nuclei is needed than in the case of PA 66, discussed in terms of the chemical structure of the repeat unit in the chains. Graphical abstract 

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4. MEGA11: Molecular Evolutionary Genetics Analysis Version 11

   https://doi.org/10.1093/molbev/msab120  

   Tamura, Koichiro; Stecher, Glen; Kumar, Sudhir (April 2021, Molecular Biology and Evolution)

   Battistuzzi, Fabia Ursula (Ed.)

   Abstract The Molecular Evolutionary Genetics Analysis (MEGA) software has matured to contain a large collection of methods and tools of computational molecular evolution. Here, we describe new additions that make MEGA a more comprehensive tool for building timetrees of species, pathogens, and gene families using rapid relaxed-clock methods. Methods for estimating divergence times and confidence intervals are implemented to use probability densities for calibration constraints for node-dating and sequence sampling dates for tip-dating analyses. They are supported by new options for tagging sequences with spatiotemporal sampling information, an expanded interactive Node Calibrations Editor, and an extended Tree Explorer to display timetrees. Also added is a Bayesian method for estimating neutral evolutionary probabilities of alleles in a species using multispecies sequence alignments and a machine learning method to test for the autocorrelation of evolutionary rates in phylogenies. The computer memory requirements for the maximum likelihood analysis are reduced significantly through reprogramming, and the graphical user interface has been made more responsive and interactive for very big data sets. These enhancements will improve the user experience, quality of results, and the pace of biological discovery. Natively compiled graphical user interface and command-line versions of MEGA11 are available for Microsoft Windows, Linux, and macOS from www.megasoftware.net. 

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5. Synthesis of ZIF-11 Crystals by Microwave Heating

   https://doi.org/10.1039/C9NJ04589A  

   J. Lucero, T. Self (January 2020, New journal of chemistry)