Results 191 to 200 of about 135,387 (264)

A pd‐Catalyzed Three‐Component Approach for the Synthesis of Monomeric and Dimeric Tetrahydro‐4H‐Furo[2,3‐b]Chromene Steroids

Journal of Heterocyclic Chemistry, EarlyView.
The three‐component reaction of a steroid bearing a dihydrofuran ring, with methyl orthoformate and salicylaldehyde produced chromanketals. ABSTRACT The three‐component reaction of a steroid bearing a dihydrofuran ring, with methyl orthoformate and salicylaldehyde produced chromanketals through a [4 + 2] inverse electron demand cycloaddition ...
Juan E. Hernández‐Martínez, William H. García‐Santos, Margarita Romero‐Ávila, Marcos Flores‐Álamo, Karen M. Ruiz‐Pérez, Martín A. Iglesias‐Arteaga   +5 more
wiley   +1 more source

Grass leaf structural and stomatal trait responses to climate gradients assessed over the 20th century and across the Great Plains, USA. [PDF]

AoB Plants
Donnelly RC, Nippert JB, Wedel ER, Ferguson CJ.   +3 more
europepmc   +1 more source

Multi‐Timescale Drought Evolution in Greece (1960–2022) From Station‐Based SPI and SPEI

International Journal of Climatology, EarlyView.
Using homogenized data from 67 HNMS stations in Greece (1960–2022), we calculated SPI and SPEI at 1–12‐month scales to characterize meteorological to hydrological drought. We quantified the network‐based spatial extent of drought, compared SPI and SPEI drought signals, and tested changes with autocorrelation‐robust Mann–Kendall trends and Pettitt ...
Michael Samouris, Anna Mamara, Vasileios Armaos, Athanassios Argiriou   +3 more
wiley   +1 more source

Station‐Based Assessment of Sub‐Seasonal Climate Trends in the Tyrolean Alps (Austria)

International Journal of Climatology, EarlyView.
In this study, we quantify the magnitude and significance of sub‐seasonal trends in the Tyrolean Alps (Austria) by collecting, processing and analysing meteorological observations from a dense network of climate stations. Our analysis indicates a warming rate of 0.43°C/dec over 1964–2023, greater sub‐seasonal trend variability when the analysis window ...
Erwin Rottler, Elena Bertazza, Franz Wagner, Gertraud Meißl, Theresa Schellander‐Gorgas, Johannes Schöber, Ulrich Strasser   +6 more
wiley   +1 more source

The 20^th century: the dawn of modern neurotrauma treatment. [PDF]

J Med Life
Dobran SA, Muresanu DF.
europepmc   +1 more source

Representation of Long‐Term Observed UK Winter Precipitation Trends and Variability in UKCP18 Global Climate Models

International Journal of Climatology, EarlyView.
Evaluating historical precipitation trends is complicated by interactions between variability in atmospheric circulation and thermodynamic forcing. This study assesses 1901–2023 UK winter precipitation trends in UK Climate Projections 2018 (UKCP18) global climate models using dynamical adjustment to separate circulation‐driven and non‐dynamical ...
James G. Carruthers, Hayley J. Fowler, Daniel Bannister, Selma B. Guerreiro   +3 more
wiley   +1 more source

Spatiotemporal Characteristics and Synoptic Patterns of Dry‐Hot Winds (Sukhoviys) in Ukraine

International Journal of Climatology, EarlyView.
This study analyses dry‐hot winds, or sukhoviys, a recurrent phenomenon during the warm season across Ukraine that contributes to rapid moisture loss from soil and vegetation. The activity of sukhoviy events was assessed using the introduced Sukhoviy Station Index, accounting for their meteorological characteristics and frequency of occurrence.
Inna Semenova, Sergio M. Vicente‐Serrano   +1 more
wiley   +1 more source

From Rare to Recurrent: Intensifying Hot–Dry Extremes Across Romania

International Journal of Climatology, EarlyView.
Romania has undergone a marked shift toward more frequent and spatially extensive compound hot–dry months since the 1990s, with persistent hotspots in the eastern Moldavian Plateau and the lower Danube–Bărăgan–Black Sea lowlands and comparatively buffered conditions at higher elevations.
Viorica Nagavciuc, Monica Ionita
wiley   +1 more source

Historical Perspectives on Scrofula: Competing Medical Discourses and Public Health Implications at the Turn of the 20^th Century. [PDF]

J Prev Med Hyg
Kirk UB, Wejse C, Kallestrup P.
europepmc   +1 more source

Spatiotemporal Evolution of Regional Heavy Rainfall Events in Guangdong, South China: Intensification and Expansion Since the Early 1990s

International Journal of Climatology, EarlyView.
Regional heavy rainfall events (RHREs) in Guangdong, South China, during 1961–2025 are reassessed using an improved strength index that integrates rainfall intensity, spatial extent and duration. Results reveal a post‐1991 shift towards more frequent and spatially extensive strong and extreme events, with June showing the most pronounced ...
Wei Liu, Hailai Duan, Kabir Rasouli, Dong Zhang, Hongyu Wu, Zhuohuang Chen, Ruqing Zhang   +6 more
wiley   +1 more source