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1. Strain-stiffening seal

   https://doi.org/10.1039/D2SM00068G  

   Chen, Baohong; Chen, Chao; Lou, Yucun; Suo, Zhigang (April 2022, Soft Matter)

   A strain-stiffening seal is soft to accommodate installation but stiff to block fluid flow. Leak by elastic deformation or rupture? We construct diagrams in which the two modes of leak are demarcated. 

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2. To flame‐seal or not to flame‐seal NMR tubes: The role of liquid–vapor equilibria on the accuracy of variable temperature experiments

   https://doi.org/10.1002/mrc.5411  

   Morrelli, Derek; Maitra, Santanu; Krishnan, V_V (November 2023, Magnetic Resonance in Chemistry)

   Abstract In NMR experiments, it is crucial to control the temperature of the sample, especially when measuring kinetic parameters. Usually, it takes 2 to 5 min for the temperature of the sample inside the NMR probe to stabilize at a fixed value set for the experiment. However, the NMR sample tubes are flame‐sealed in some cases, such as when working with volatile solvents, atmosphere‐sensitive samples, or calibration samples for long‐term use. When these samples are placed inside the NMR probe, the spectrometer controls the lower portion (liquid phase) of the NMR sample tube with a gas flow at a fixed temperature, while the upper portion (vapor) is at ambient temperature. This probe design creates a unique temperature gradient across the sample, leading to vapor pressure build‐up, particularly inside a sealed NMR tube. By analyzing the temperature‐dependent spectral line shape changes of a chemical exchange process, we report that under standard experimental conditions, the sample temperature can take up to 2 to 3 h (instead of minutes) to stabilize. The time scale of the liquid–vapor equilibrium process is much slower, with a half‐life exceeding 35 min, in contrast to the 2‐min duration required to obtain each spectrum. This phenomenon is exclusively due to the liquid–vapor equilibrium process of the flame‐sealed NMR tube and is not observable otherwise. 

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3. GRAY SEAL (HALICHOERUS GRYPUS) PUPS FAIL TO MOUNT AN INFLAMMATORY CYTOKINE RESPONSE TO INFLUENZA A VIRUS

   https://doi.org/10.7589/JWD-D-24-00166  

   McCosker, Christina M; Levin, Milton; Puryear, Wendy B; Runstadler, Jonathan A; Murray, Kimberly T; Cammen, Kristina M (July 2025, Journal of Wildlife Diseases)
4. microRNA profiling in the Weddell seal suggests novel regulatory mechanisms contributing to diving adaptation

   https://doi.org/10.1186/s12864-020-6675-0  

   Penso-Dolfin, Luca; Haerty, Wilfried; Hindle, Allyson; Di Palma, Federica (December 2020, BMC Genomics)
5. Wake induced by an undulating elephant seal whisker

   https://doi.org/10.1007/s12650-018-0484-4  

   Bunjevac, Joseph; Turk, Jodi; Rinehart, Aidan; Zhang, Wei (March 2018, Journal of Visualization)