Results 181 to 190 of about 296,849 (299)

Mechanistic Insights Into Sustainable Catalytic Pyrolysis of Biomass‐Derived Ferulic Acid: The Role of Alumina Regeneration

Chemistry – A European Journal, EarlyView.
Surface‐bound ferulate phenolate complexes undergo styrene‐like polymerization on alumina, yielding a polymeric carbonaceous layer that progressively transforms into polyaromatic carbon domains with concomitant release of aromatic products, while parallel surface‐assisted decarboxylation produces 4‐vinylguaiacol. ABSTRACT A fundamental understanding of
Tetiana V. Kulik, Borys B. Palianytsia, Mykola M. Ilchenko, Nataliia S. Nastasiienko, David J. Morgan, Liudmila P. Storozhuk, David J. Willock, Greg Shaw, Duncan F. Wass, Rafael Luque, Philip R. Davies, Mykola T. Kartel   +11 more
wiley   +1 more source

Jets from a stellar-mass black hole are as relativistic as those from supermassive black holes. [PDF]

Nat Commun
Zhang X, Yu W, Carotenuto F, Fender R, Motta S, Bahramian A, Miller-Jones JCA, Russell TD, Corbel S, Woudt PA, Atri P, Knigge C, Sivakoff GR, Hughes AK, van den Eijnden J, Matthews JH, Baglio MC, Saikia P.   +17 more
europepmc   +1 more source

Reversible Cystine Disulfide Scaffolding Enables Carbonyl Sulfide‐Mediated Intramolecular Peptide Bond Formation via Cyclocystine: Implications for Prebiotic Chemistry

Chemistry – A European Journal, EarlyView.
Cystine is unique among amino acids, in that the disulfide bond can allow intramolecular peptide bond formation. This cyclization offers potential advantages for intramolecular coupling selectivity in prebiotic peptide formation. ABSTRACT Treatment of cystine (the disulfide‐linked dimer of cysteine) with carbonyl sulfide (COS) results in the formation ...
Avinash Vicholous Dass, Arthur Srayeddin, Anthony Rullo, Jonathan Stone, Maikel Rheinstadter, Paul Harrison   +5 more
wiley   +1 more source

A gas-enshrouded and gas-reddened black hole at cosmic dawn. [PDF]

Nature
Naidu RP, Matthee J, Katz H, de Graaff A, Oesch PA, Smith A, Greene JE, Brammer G, Weibel A, Hviding R, Chisholm J, Labbé I, Simcoe RA, Witten C, Sun WQ, Atek H, Baggen JFW, Belli S, Bezanson R, Boogaard LA, Bose S, Bouwens RJ, Covelo-Paz A, Dayal P, Fudamoto Y, Furtak LJ, Giovinazzo E, Goulding A, Gronke M, Heintz KE, Hirschmann M, Illingworth G, Inoue AK, Johnson BD, Leja J, Leonova E, McConachie I, Maseda MV, Natarajan P, Nelson E, Setton DJ, Shivaei I, Sobral D, Stefanon M, Tacchella S, Toft S, Torralba A, van Dokkum P, van der Wel A, Volonteri M, Walter F, Wang B, Watson D, Whitaker K.   +53 more
europepmc   +1 more source

X‐Ray Absorption Sensitivity at 5d$5d$ Edges of High‐Valent Light Actinides to Crystal‐Field Strength and Covalency Effects

Chemistry – A European Journal, EarlyView.
Analysis of x‐ray absorption spectra of U(VI) and U(V) oxides indicates an important role of U 5f−O$5f-\rm{O}$ 2p$2p$ charge transfer for increasing the 5f$5f$ occupancy and thereby affecting the ground state properties. ABSTRACT The 5f$5f$ states were probed in ThO2$\rm{ThO}_2$ and U(VI) and U(V) oxides using x‐ray absorption spectroscopy at the ...
Johan R. Vegelius, David K. Shuh, Sergei M. Butorin   +2 more
wiley   +1 more source

Astronomical spectra as language: Order-agnostic foundation model for low-SNR reconstruction and stellar parameter prediction. [PDF]

iScience
Xu J, Song X, Li Y, Wang C, Fu Z, Luo A, Liu J.   +6 more
europepmc   +1 more source

Talin1 Adhesion Morphology and Colocalization With Tensin3 Are Largely Unaffected by Polyacrylamide Substrate Stiffness

Cytoskeleton, EarlyView.
ABSTRACT Cells sense the stiffness of their extracellular matrix (ECM) and adapt their behavior accordingly. We investigated how ECM stiffness affects the spatial organization of talin1, a key mechanosensitive focal adhesion protein. Using polyacrylamide (PA) hydrogels with tunable stiffnesses (0.2–188 kPa), we analyzed cell morphology, migration ...
Joanna Hajduk, Patrycja Twardawa, Sylwia Bobis‐Wozowicz, Marta Szewczyk, Zenon Rajfur, Zbigniew Baster   +5 more
wiley   +1 more source

Magnetogravitationally regulated streamer accretion onto a class 0 protostellar system. [PDF]

Sci Adv
Huang B, Girart JM, Stephens IW, Megeath T, Le Gouellec VJM, Murillo NM, Cortés P, Fernández-López M, Li ZY, Looney LW, López-Vázquez JA, Pineda JE, Sánchez-Monge Á, Sanhueza P, Sadavoy S, Zhang Q, Hull CLH, Karnath N, Liang E, Myers PC.   +19 more
europepmc   +1 more source

Sustainability Assessment of Micro, Small, and Medium Enterprises: A Systematic Review and Hybrid Architecture for Credible, Salient, and Legitimate Knowledge Governance

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Sustainability assessment advances corporate social responsibility toward inclusive development. Widely recognized approaches prove inadequate for micro, small, and medium enterprises (MSMEs), resulting in fragmented proliferation that hinders cumulative knowledge.
Luísa Couto Gonçalves de Souza, Laura Proença Guimarães, Maria Auxiliadora Drumond   +2 more
wiley   +1 more source

Imaging black holes: a VLBI success story. [PDF]

Astrophys Space Sci
Zensus JA.
europepmc   +1 more source