Results 131 to 140 of about 12,722 (248)

Cross Carbonyl‐Olefin Metathesis of Unactivated Olefins

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 13, 2 July 2026.
A method for the olefination of aryl aldehydes with unactivated alkenes via cross carbonyl‐olefin metathesis is described. Reaction of an aldehyde substrate with a cis−1,2‐disubstituted or monosubstituted olefin using the HBF4 salt of 2,3‐diazabicyclo[2.2.2]octane results in high‐yielding olefination with exclusive trans stereoselectivity. The reaction
Jason Wu   +2 more
wiley   +1 more source

Optimizing Headspace Analysis to Assess the Suitability of Fused Deposition Modeling Materials Used in Cultural Heritage

open access: yesChemistry–Methods, Volume 6, Issue 7, July 2026.
A combined approach using trap‐enrichment solid‐phase microextraction coupled with gas chromatography–mass spectrometry, Raman spectroscopy, and the Oddy test is presented to evaluate fused deposition modeling materials for cultural heritage applications.
María Higueras   +5 more
wiley   +1 more source

Borane catalysed annulative sulfenylation of internal alkynes: towards the synthesis and study of fused heterocycles. [PDF]

open access: yesChem Sci
Das S   +8 more
europepmc   +1 more source

Effect of Light Intensity on the Production of Volatile Organic Compounds by Submerged Macrophyte Vallisneria natans in Different Growth Periods

open access: yesEcology and Evolution, Volume 16, Issue 7, July 2026.
In this study, we investigated the effects of growth period and light intensity on BVOCs production in the submerged macrophyte V. natans using a controlled experiment with three light treatments. The results showed that BVOCs production in submerged macrophytes is jointly regulated by plant growth cycles and underwater light intensities and cannot be ...
Xusheng Gong   +5 more
wiley   +1 more source

Directed Hole Localization Stabilizing Interfacial Sulfur Species to Boost α‐C–H Activation for Selective Biomass Photo‐oxidation

open access: yesENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 4, July 2026.
Efficient α‐C–H bond activation and directional conversion for selective biomass photo‐oxidation are achieved by integrating polarization and interface engineering strategies in P‐doped ZnIn2S4 polar photocatalysts, which leverage hole localization and stable interfacial sulfur species, endowing bio‐based HMF at 94.4% conversion with 94.5% selectivity ...
Yinyin He   +3 more
wiley   +1 more source

Leveraging Machine Learning to Predict Food Waste Quantity: Focusing on Military Dining Facilities as Large‐Scale Food Service Operations

open access: yesJournal of Forecasting, Volume 45, Issue 4, Page 2001-2016, July 2026.
ABSTRACT Food waste reveals inefficiencies in resource use and contributes significantly to environmental pollution. In the United States, food waste accounts for the majority of total waste, with more than 50 million tons generated annually. In military units that operate large‐scale institutional food‐service facilities and generate significant food ...
YongSun Kim, Hyun Shik Yoon
wiley   +1 more source

Effects of Composition and Baking Temperature on the Properties of Low‐Protein Cookies

open access: yesFood Science &Nutrition, Volume 14, Issue 7, July 2026.
This work focused on fabricating low‐protein cookies (LPCs) from low‐protein steamed bun flour via baking and elucidating the influence of both formulation variables and baking temperature on their physicochemical properties through single‐factor analysis.
Cuiping Shi   +4 more
wiley   +1 more source

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