Results 131 to 140 of about 27,351 (240)

Neanderthals, hypercarnivores, and maggots: Insights from stable nitrogen isotopes. [PDF]

Sci Adv
Beasley MM, Lesnik JJ, Speth JD.
europepmc   +1 more source

Simultaneous tracing of carbon and nitrogen isotopes in human cells. [PDF]

Mol Biosyst, 2016
Nilsson R, Jain M.
europepmc   +1 more source

Acetylene Semi‐Hydrogenation by Photocatalysis

Angewandte Chemie, EarlyView.
Photocatalytic acetylene semi‐hydrogenation is an emerging light‐driven route to polymer‐grade ethylene, offering a mild alternative to energy‐intensive thermocatalysis. By replacing H2 co‐feed with water or other proton sources, these systems can achieve high selectivity under ambient conditions.
Anna Fortunato, Brando Adranno, Sharon Silloni, Marianna Barbieri, Claudia Masia, Francesca Arcudi, Luka Đorđević   +6 more
wiley   +2 more sources

Multiple formation pathways for amino acids in the early Solar System based on carbon and nitrogen isotopes in asteroid Bennu samples. [PDF]

Proc Natl Acad Sci U S A
Baczynski AA, Mcintosh OM, Simkus DN, McLain HL, Dworkin JP, Glavin DP, Elsila JE, Matney M, House CH, Freeman KH, Connolly HC, Lauretta DS.   +11 more
europepmc   +1 more source

Nitrogen isotopes provide clues to amino acid metabolism in human colorectal cancer cells. [PDF]

Sci Rep, 2017
Krishnamurthy RV, Suryawanshi YR, Essani K.   +2 more
europepmc   +1 more source

Fluorescent cAMP Analogs: Enzymatic Synthesis, Unexpected Photophysical Behavior and Protein Kinase A Recognition

Angewandte Chemie, EarlyView.
Cyclic adenosine monophosphate (cAMP) is a key cellular second messenger. Adenylyl cyclase converts emissive isomorphic nucleoside triphosphates into fluorescent cAMPs. cthAMP displays unusually high brightness compared to thATP, its precursor, enabling real‐time monitoring of enzymatic reactions.
Deyuan Cong, Victor Dubois, Jamie Y. Lam, Yitzhak Tor   +3 more
wiley   +2 more sources

Identification of fire severity in peat deposits using carbon and nitrogen isotopes. [PDF]

Sci Rep
Patria AA, Obrochta SP, Miyajima T, Behrens BC, Anggara F, Miyairi Y, Yokoyama Y.   +6 more
europepmc   +1 more source

Nitrogen isotopes suggest a change in nitrogen dynamics between the Late Pleistocene and modern time in Yukon, Canada. [PDF]

PLoS One, 2018
Tahmasebi F, Longstaffe FJ, Zazula G.
europepmc   +1 more source

Chelation Drives Surface Substitution in Hybrid‐MXenes

Angewandte Chemie, EarlyView.
We demonstrate ethylenediamine‐derived bidentate binding on Ti3C2 by controlled deprotonation of ─NH2 groups during reaction with Ti3C2Br2. XRD, XPS, ssNMR, STEM, DFT, and INS confirm the bidentate coordination and the superior stability of chelating modes, while AIMD reveals proton transfer and new surface imine–Ti bonding mode.
Vikash Khokhar, Young‐Hwan Kim, Abu Rashed Md. Shawon, Fatemeh Karimi, Danial Zangeneh, Yongqiang Cheng, Chang Liu, Murillo Longo Martins, Alexander S. Filatov, Robert F. Klie, Aaron J. Rossini, John S. Anderson, Dmitri V. Talapin, De‐en Jiang   +13 more
wiley   +2 more sources

Nitrogen Isotopes Suggest Sex-Based Diet Differences on the Breeding Grounds for a Sexually Monomorphic Migratory Passerine. [PDF]

Ecol Evol
Iverson AR, Cormier RL, Humple DL, Hahn TP, Schaefer J, Hull EM, Sakai WH, Simard-Provençal S.   +7 more
europepmc   +1 more source