Results 221 to 230 of about 71,229 (282)

Photochemical Cyclization of Tertiary Buta‐2,3‐dienamides to β‐Lactams Upon Triplet Energy Transfer

Angewandte Chemie, Volume 138, Issue 13, 23 March 2026.
Energy transfer is the key to the successful photocyclization of the title compounds to 3,4‐disubstituted 2‐azetidinones. If the substituent at the nitrogen atom is primary (R2 = H), trans products are formed exclusively. The triplet state of xanthen‐9‐one (XT) was found to be quenched by an allene amide (R, R2 = H, R1 = Bn, and R3 = Ph) with a ...
Johannes Hofer, Maria‐Sophie Bertrams, Christoph Kerzig, Thorsten Bach   +3 more
wiley   +2 more sources

Assessing the risk spillover effects between the Chinese carbon market and the US-China energy market. [PDF]

Heliyon
Yan J, Işık C.
europepmc   +1 more source

Urban birds' detectability is affected by inter‐ and intraspecific variation in shyness

Ibis, Volume 168, Issue 2, Page 711-722, April 2026.
Detection probabilities differ between bird species as a function of their life history and ecological and behavioural traits, inevitably introducing bias in their abundance and occupancy estimates. However, the effects of behavioural traits such as species shyness and vigilance on detectability remain poorly understood.
Peter Mikula, Federico Morelli, Annette Menzel, Piotr Tryjanowski   +3 more
wiley   +1 more source

Using smart transportation assets to hedge fossil energy markets: Evidence from quantile-based VAR approach. [PDF]

PLoS One
Hasan MB, Hossain MN, Khatun H, Uddin GS, Bilgin MH, Tian S.   +5 more
europepmc   +1 more source

Financial Time Series Uncertainty: A Review of Probabilistic AI Applications

Journal of Economic Surveys, Volume 40, Issue 2, Page 915-953, April 2026.
ABSTRACT Probabilistic machine learning models offer a distinct advantage over traditional deterministic approaches by quantifying both epistemic uncertainty (stemming from limited data or model knowledge) and aleatoric uncertainty (due to inherent randomness in the data), along with full distributional forecasts.
Sivert Eggen, Tord Johan Espe, Kristoffer Grude, Morten Risstad, Rickard Sandberg   +4 more
wiley   +1 more source

Multiscale neural dynamics in sleep transition volatility across age scales: a multimodal EEG-EMG-EOG analysis of temazepam effects. [PDF]

Geroscience
Sirpal P, Sikora WA, Refai HH.
europepmc   +1 more source

The Monetary Policy–Commodities Nexus: A Survey

Journal of Economic Surveys, Volume 40, Issue 2, Page 1050-1082, April 2026.
ABSTRACT This survey synthesizes evidence on the bidirectional links between commodity markets and monetary policy. On the commodities‐to‐policy side, we review how shocks to energy, food, and metals pass through to inflation, inflation expectations, economic activity, and financial stability in state‐dependent ways that vary by shock type, exposure ...
Martin T. Bohl, Niklas Humann, Pierre L. Siklos   +2 more
wiley   +1 more source

Examining the safe-haven and hedge capabilities of gold and cryptocurrencies: A GARCH and regression quantiles approach in geopolitical and market extremes. [PDF]

Heliyon
Ben Ameur H, Jamaani F, N Abu Alfoul M.
europepmc   +1 more source

Climate variability, population growth, and globalization impacting food security in Pakistan. [PDF]

Sci Rep
Abbas S, Haider A, Kousar S, Lu H, Lu S, Liu F, Li H, Miao C, Feng W, Ahamad MI, Mehmood MS, Zulqarnain RM.   +11 more
europepmc   +1 more source

Recurrent Neural Network GO-GARCH Model for Portfolio Selection. [PDF]

J Time Ser Econom
Burda M, Schroeder AK.
europepmc   +1 more source