Results 181 to 190 of about 128,513 (313)

Synthesis of Acyl Fluorides Using the Tribromoisocyanuric Acid (TBCA)/Triphenylphosphine/HF.Pyridine

Israel Journal of Chemistry, Volume 66, Issue 4, July 2026.
The present contribution reports an efficient Appel‐type reaction for the synthesis of acyl fluorides from their corresponding carboxylic acids using the tribromoisocyanuric acid/triphenylphosphine/HF.pyridine system in up to 69% isolated yields. The methodology tolerates a variety of carboxylic acids. The usefulness of our methodology was demonstrated
Hugo S. Bragueroli, Pedro H. A. Silva, João M. C. Sousa, Vinicius O. Chaffin, Fabio J. F. S. Henrique, Marcio C. S. de Mattos, Pierre M. Esteves   +6 more
wiley   +1 more source

Airway Involvement in Conradi–Hünermann–Happle Syndrome: A Novel Clinical Manifestation

The Laryngoscope, Volume 136, Issue 7, Page 3240-3245, July 2026.
We report the first documented case of airway involvement in Conradi–Hünermann–Happle syndrome (CDPX2), an X‐linked dominant form of chondrodysplasia punctata caused by pathogenic variants in EBP. A 2‐month‐old female with genetically confirmed CDPX2 developed severe subglottic stenosis and persistent respiratory distress requiring CPAP; cross ...
Enrique G. Villarreal, Jackie Chiang, Evan J. Propst, Nikolaus E. Wolter   +3 more
wiley   +1 more source

The Seasons of a Career in Physical Chemistry: Olivia Harper Wilkins. [PDF]

ACS Phys Chem Au
Wilkins OH, Shea JE, Scholes GD, Solomon GC.   +3 more
europepmc   +1 more source

The Value of NBI in the Detection of Local Recurrences of Head and Neck Squamous Cell Carcinoma After (Chemo)radiotherapy: A Randomised Controlled Trial

Clinical Otolaryngology, Volume 51, Issue 4, Page 529-537, July 2026.
ABSTRACT Objectives Detection of local recurrences after (chemo)radiotherapy (C)RT for head and neck squamous cell carcinoma (HNSCC) is challenging due to post‐treatment mucosal changes. This study assessed the added diagnostic value of narrow band imaging (NBI) compared to white light imaging (WLI) during rigid endoscopy under general anaesthesia for ...
Jeroen M. Westra, Manon. A. Zwakenberg, Constanze Scholman, Bert van der Vegt, Jan Wedman, Inge Wegner, György B. Halmos, Boudewijn E. C. Plaat   +7 more
wiley   +1 more source

Merging Biocatalysis and Chemocatalysis in Flow: State‐of‐the‐Art and Future Directions for Sustainable Synthesis

Angewandte Chemie, Volume 138, Issue 25, 15 June 2026.
This review highlights recent advances in integrating biocatalysis and chemocatalysis in continuous flow to create streamlined, sustainable processes. It examines chemo‐enzymatic cascades combining at least one enzymatic and one chemical step, discusses challenges such as enzyme immobilization, leaching, and reactor clogging, and presents solutions ...
Petros Siasiaridis, Matteo Damian, Francesco G. Mutti   +2 more
wiley   +2 more sources

Satellite megaconstellations will threaten space-based astronomy. [PDF]

Nature
Borlaff AS, Marcum PM, Howell SB.
europepmc   +1 more source

Design and Analysis of Optical Telescope Subsystem

Havacılık ve Uzay Teknolojileri Dergisi
In the realm of space exploration, there is a notable upsurge in advanced remote imaging systems, particularly in CubeSats, owing to their efficiency and increasing payload capacities.
Alper Şanlı, Tuncay Yunus Erkeç
doaj  

Solar telescopes

Scholarpedia, 2008
openaire   +1 more source

Seizing opportunities and navigating the challenges of spaceflight research as an early career researcher

Experimental Physiology, EarlyView.
Colleen S. Deane
wiley   +1 more source

Random Diophantine equations in the primes

Mathematika, Volume 72, Issue 3, July 2026.
Abstract We consider equations of the form a1x1k+⋯+asxsk=0$a_{1}x_{1}^{k}+\cdots +a_{s}x_{s}^{k}=0$ where the variables xi$x_{i}$ are all taken to be primes. We define an analogue of the Hasse principle for solubility in the primes (which we call the prime Hasse principle), and prove that, whenever k⩾2$k\geqslant 2$, s⩾3k+2$s\geqslant 3k+2$, this holds
Philippa Holdridge
wiley   +1 more source