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1. Collision-induced dissociation of [U VI O 2 (ClO 4 )] + revisited: Production of [U VI O 2 (Cl)] + and subsequent hydrolysis to create [U VI O 2 (OH)] +

   https://doi.org/10.1002/rcm.8135  

   Tatosian, Irena J. ; Iacovino, Anna C. ; Van Stipdonk, Michael J. ( July 2018 , Rapid Communications in Mass Spectrometry)
2. S 2 -PM: semi-supervised learning for efficient performance modeling of analog and mixed signal circuits

   https://doi.org/10.1145/3287624.3287657  

   Alawieh, Mohamed Baker ; Tang, Xiyuan ; Pan, David Z. ( January 2019 , ASP-DAC)
3. Controls on Speleothem Initial 234 U/ 238 U Ratios in a Monsoon Climate

   https://doi.org/10.1029/2023GC010899  

   Oster, Jessica L. ; Ronay, Elli R. ; Sharp, Warren D. ; Breitenbach, Sebastian F. M. ; Furbish, David J. ( April 2023 , Geochemistry, Geophysics, Geosystems)

   Speleothem initial uranium isotope ratios ((²³⁴U/²³⁸U)_i) can be influenced by processes along the seepage water flow‐path including alpha‐recoil into porewater during²³⁸U decay and hostrock weathering, the balance of which can reflect the infiltration rate. Thus, speleothem (²³⁴U/²³⁸U)_imay provide information about past changes in rainfall amounts. However, the utility of (²³⁴U/²³⁸U)_ias a paleo‐infiltration proxy has only been explored in a limited set of rainfall regimes. We present a speleothem (²³⁴U/²³⁸U)_irecord from Mawmluh Cave in northeast India, an area influenced by the Indian Summer Monsoon, covering 1964–2012 CE. Speleothem (²³⁴U/²³⁸U)_iwas relatively constant from 1964 to 1984 but then linearly increased by 0.05 over ∼15 years, a trend that does not correspond with observed rainfall changes. To evaluate potential drivers of (²³⁴U/²³⁸U)_ivariability, we model the evolution of water (²³⁴U/²³⁸U) in a simple karst system using an advection‐reaction model parameterized by Mawmluh Cave variables. Although varying infiltration influences modeled water (²³⁴U/²³⁸U), the larger, sustained change observed in the speleothem record can only be modeled by varying the U concentration and (²³⁴U/²³⁸U) of the weathering hostrock. This suggests that larger shifts in speleothem (²³⁴U/²³⁸U)_imay result from flow path changes, bringing waters in contact with hostrock of variable U characteristics. Consideration of published Mawmluh Cave records suggests that these mechanisms may also explain variability in stalagmite (²³⁴U/²³⁸U)_ion precessional timescales. Further examination of speleothems (²³⁴U/²³⁸U)_ifrom climates characterized by high rainfall and extensive weathering is warranted to better constrain the controls on (²³⁴U/²³⁸U)_iin these dynamic environments.

    

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4. Synthesis of 5‐Cyanomethyluridine (cnm 5 U) and 5‐Cyanouridine (cn 5 U) Phosphoramidites and Their Incorporation into RNA Oligonucleotides

   https://doi.org/10.1002/cpnc.114  

   Mao, Song ; Tsai, Hsu‐Chun ; Sheng, Jia ( August 2020 , Current Protocols in Nucleic Acid Chemistry)

   This article contains detailed synthetic protocols for preparation of 5‐cyanomethyluridine (cnm⁵U) and 5‐cyanouridine (cn⁵U) phosphoramidites. The synthesis of the cnm⁵U phosphoramidite building block starts with commercially available 5‐methyluridine (m⁵C), followed by bromination of the 5‐methyl group to install the cyano moiety using TMSCN/TBAF. The cn⁵U phosphoramidite is obtained by regular Vorbrüggen glycosylation of the protected ribofuranose with silylated 5‐cyanouracil. These two modified phosphoramidites are suitable for synthesis of RNA oligonucleotides on solid phase using conventional amidite chemistry. Our protocol provides access to two novel building blocks for constructing RNA‐based therapeutics. © 2020 Wiley Periodicals LLC.

   Basic Protocol 1: Preparation of cnm⁵U and cn⁵U phosphoramidites

   Basic Protocol 2: Synthesis, purification, and characterization of cnm⁵U‐ and cn⁵U‐modified RNA oligonucleotides

    

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5. Signatures of Non-universal Quantum Dynamics of Ultracold Chemical Reactions of Polar Alkali Dimer Molecules with Alkali Metal Atoms: Li( 2 S) + NaLi( a 3 Σ + ) → Na( 2 S) + Li 2 ( a 3 Σ u + )

   https://doi.org/10.1021/acs.jpclett.3c00159  

   Morita, Masato ; Kendrick, Brian K. ; Kłos, Jacek ; Kotochigova, Svetlana ; Brumer, Paul ; Tscherbul, Timur V. ( April 2023 , The Journal of Physical Chemistry Letters)