Results 91 to 100 of about 549,888 (271)
Sulfur‐Boron Lewis Pair‐Catalyzed Hydrohalogenation of Alkynes via Formal Hydrogen Atom Transfer
Angewandte Chemie, EarlyView.A sulfur‐boron Lewis pair enables the stereodivergent hydrohalogenation of alkynes with exclusive Markovnikov selectivity. Mechanistic studies support a proton transfer‐electron transfer (PT‐ET) sequence for vinyl radical formation rather than a concerted hydrogen atom transfer (HAT) pathway.
Yun Soo Shim +4 more
wiley +2 more sources
An Injectable, Self‐Expanding Hemostatic Foam for Field‐Compatible Postpartum Hemorrhage Management
Advanced Science, EarlyView.Postpartum hemorrhage is the leading cause of maternal death worldwide, yet many treatments are hard to use outside well‐equipped hospitals. This work introduces an easy‐to‐use device that rapidly delivers a degradable foam into the uterus. The foam stops bleeding through pressure and clotting support, offering a practical option for low‐resource ...
Charlotte Meyer +12 more
wiley +1 more source
Nitrogen Radical Photocatalysed Reduction of Nitrous Oxide
Angewandte Chemie, EarlyView.This work offers the first example of reduction of the potent greenhouse gas N2O to the benign products N2 and O(Bpin)2 using a nitrogen‐based catalyst. The active catalyst is shown to be a nitrogen‐based radical which operates under photocatalytic conditions.
Reece Lister‐Roberts +2 more
wiley +2 more sources
Advanced Science, EarlyView.A rational, solvent‐free synthesis utilizing 2,6‐diaminonaphthalene produces ultrabright green‐emissive carbon dots. Regulated by a self‐limiting oxidative capping mechanism, excitons undergo ultrafast intra‐particle funneling from the nitrogen‐doped carbon core to emissive surface traps.
Hyeonjin Park +8 more
wiley +1 more source
High‐Pressure Synthesis of Quantum‐Stabilised Manganese Superhydride MnH7
Angewandte Chemie, EarlyView.Superhydrides are a rarity in transition metal hosts. Through high‐pressure, high‐temperature diamond anvil cell studies, the most hydrogen‐rich transition metal hydride, MnH7${\rm MnH}_7$ has been synthesised. Density functional theory calculations demonstrate that zero‐point energy stabilises the crystalline structure that MnH7${\rm MnH}_7$ adopts ...
Mikhail A. Kuzovnikov +10 more
wiley +2 more sources
Geosciences, 2019 The aim of this study is to investigate the stable isotope composition of precipitation and river water from the northeastern part of Romania. For this study, we collected monthly samples (for variable periods of time) of precipitation from six stations,
Viorica Nagavciuc +2 more
doaj +1 more source
Performance and Environmental Impact of Flexible Temperature Sensors on Cellulose‐Based Substrate
Advanced Electronic Materials, EarlyView.Toward low‐environmental‐impact approach to thin‐film sensors fabrication using natural ingredient‐based triacetyl cellulose (TAC) substrate. Temperature sensors are fabricated and characterized based on thermal and mechanical performance. Substrate recovery is demonstrated by facile dissolution of a Mo‐based sensor in deionized water.
Dianne C. Corsino +14 more
wiley +1 more source
Modeling insights into deuterium excess as an indicator of water vapor source conditions
, 2016 Deuterium excess (d) is interpreted in conventional paleoclimate reconstructions as a tracer of oceanic source region conditions, such as temperature, where precipitation originates.
Schmidt, Gavin A. +3 more
core +1 more source
Water tagging experiments for the interpretation of deuterium excess in Antarctica
, 2021 These simulation results are from the water-tagging experiments in the manuscript "Sublimation origin of negative deuterium excess observed in snow and ice samples from McMurdo Dry Valleys and Allan Hills Blue Ice Areas, East Antarctica" submitted to the
Sylvia G. Dee +3 more
core +1 more source
Advanced Energy Materials, EarlyView.Trace water is acting as a constructive mediator in 2LiCl–GaF3, markedly increasing ionic conductivity while reorganizing local coordination. Hydration creates localized Li+ solvation environments and partially dissociates ion pairs, enhancing Li‐ion mobility.
Youngkyung Kim +10 more
wiley +1 more source