Results 181 to 190 of about 1,126 (271)

Metre-scale vertical zonation of corals and sponges on a deep-marine cliff reflects trophic resource partitioning. [PDF]

Sci Rep
Greenman W, Murillo FJ, de Moura Neves B, Kenchington E, Jasperse L, Fox A, Walker B, Edinger E, Sherwood O.   +8 more
europepmc   +1 more source

Precision Chemistry for Protein Lysine Modification

Chemistry – A European Journal, EarlyView.
Selective modification of lysine residues is challenging due to their similar intrinsic reactivity. Inspired by enzymatic recognition, ligand‐guided electrophiles enable site‐selective labeling and functionalization, while ligand‐guided catalyses achieve regioselective installation of bio‐relevant post‐translational modifications.
Mayu Onoda, Motomu Kanai
wiley   +1 more source

Archaeobotanical investigations at high-elevation sites of the Pamir Mountains and fergana foothills. [PDF]

iScience
Boxleitner K, Spengler RN, Alekseitseva V, Chargynov T, Abdykanova A, Sayfuloev N, Shnaider S.   +6 more
europepmc   +1 more source

A Comprehensive Review of the Key Factors Affecting Biogas Production From Anaerobic Digestion of Organic Waste

CleanMat, EarlyView.
Efficient conversion of organic waste to biogas depends on the coordinated optimization of feedstock composition, pretreatment, operational parameters, reactor design, and microbial community dynamics. This review highlights how these interacting factors improve methane yield and process stability, advancing anaerobic digestion as a practical pathway ...
Ahmed Alengebawy, Yi Ran, Sara Taha Abdelkhalek, Tarek Mahrous, Ahmed Ragheb, Mohamed Samer, Ping Ai   +6 more
wiley   +1 more source

Human dietary diversity in the Colombian Andes at the terminal Pleistocene-late Holocene sites Tequendama and Aguazuque. [PDF]

iScience
Ziegler MJ, Robinson M, Aceituno FJ, Morcote-Ríos G, Becerra-Valdivia L, Carleton WC, Iriarte J, Roberts P.   +7 more
europepmc   +1 more source

Origin and Distribution of Large Asphaltite in South China. [PDF]

ACS Omega, 2020
Zhu G, Wang M, Li J, Zhao K, Li C, Chen Z, Zhou L, Wu Z.   +7 more
europepmc   +1 more source

The Electronic Spin State of Diradicals Obtained from the Nuclear Perspective: The Strange Case of Chichibabin Radicals

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
The electronic spin state of two Chichibabin radicals is investigated using 2‐dimensional hyperfine correlated Electron Nuclear Double Resonance. The protons (I=1/2) act as a reference for the electronic spin quantum number (S) via their hyperfine interactions.
Gabriel Moise, Saleta Fernández, Kit Joll, Mikhail V. Vaganov, Fátima García, Christiane R. Timmel, Diego Peña, Arzhang Ardavan   +7 more
wiley   +1 more source

Sustainable Hydrogen Production by Glycerol and Monosaccharides Catalytic Acceptorless Dehydrogenation (AD) in Homogeneous Phase

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Sustainable hydrogen production can be obtained from hydogen‐rich biomass‐derived organic molecules through Acceptorless Dehydrogenation (AD) reactions. Glycerol and sugars are available in large quantities from industry and can be successfully used as substrates in AD protocols, in the presence of tailored, selective, easily tunable and thermally ...
Sylwia Kostera, Luca Gonsalvi
wiley   +1 more source

Fundamental constraints and questions from the study of martian meteorites and the need for returned samples. [PDF]

Proc Natl Acad Sci U S A
Udry A, Ostwald AM, Day JMD, Hallis LJ.
europepmc   +1 more source

Segmental Hair Analysis of Diphenhydramine and Cyclizine Following a Single Dose

Drug Testing and Analysis, EarlyView.
A single oral dose of diphenhydramine and cyclizine can be quantified in human head hair for a minimum of 5 months and, in certain cases, for up to 1 year following intake. Among 12 study participants, the measured concentrations ranged from 0 to 610 pg/mg within 1 year post‐intake.
Jan Bílek, Marie Katrine Klose Nielsen, Robert Kronstrand, Sys Stybe Johansen   +3 more
wiley   +1 more source