Results 181 to 190 of about 100,245 (263)

Carbon and Nitrogen Stable Isotope Variation in Semi-Arid Woody Plant Species Growing in Managed and Natural Settings Across Southern California. [PDF]

Plant Environ Interact
Pratt RB, Vourlitis GL, Uriaz M, Lopez-Meza M, Sanders A, Esparza E, Santos-Volpe A, Kamimura C, Fissore C, Moler E, VanOverbeke D, Meyer WM.   +11 more
europepmc   +1 more source

Local Chemical Gradients in a Mammalian Cortex Measured In Vivo With a Silicon Nanodialysis Mass Spectrometry Platform

Angewandte Chemie, EarlyView.
Fluorescence image of the coronal slice of mouse brain where multiple neurochemicals have been measured in vivo with a nanodialysis platform coupled to CE‐MS to reveal strong millimeter‐scale spatial chemical gradients. Formation and maintenance of such local chemical compartments in the otherwise diffusion‐homogeneous cortex indicates strong ...
Weihua Shi, Keyin Li, Yu Ding, Alex G. Armstrong, Jonathan V. Sweedler, Yurii Vlasov   +5 more
wiley   +1 more source

Exploration of Yeast Species Suitable for Preparation of Stable Isotope-Labeled Internal Standards Extracts (SILIS). [PDF]

Mass Spectrom (Tokyo)
Seike T, Prihardi K, Ogino C, Matsuda F.
europepmc   +1 more source

Wrinkled Strain‐Enriched High‐Entropy Metallene Enables Cross‐Site Tandem Nitrate‐to‐Ammonia

Angewandte Chemie, EarlyView.
A wrinkled 2D PdFeCoNiCuIn high‐entropy metallene overcomes the low atom utilization of high‐entropy alloys. Indium‐induced strain and p‐d hybridization enable a cross‐site tandem pathway for nitrate reduction to ammonia. It achieves 99.3% Faradaic efficiency and an NH3 yield rate of 4.55 mmol h−1 mgcat−1.
Tianfang Yang, Yang Liu, Menghao Kong, Shilong Li, Shizhe Liu, Guanjie He, Shuyan Gao   +6 more
wiley   +1 more source

Impaired Arginine, Citrulline and Glutamine Metabolism in Type 2 Diabetes: Insights from a Stable Isotope Study. [PDF]

J Clin Endocrinol Metab
Tosur M, Wierzchowska-McNew RA, Deutz NEP, Engelen MPKJ.   +3 more
europepmc   +1 more source

Ketazine‐Linked Covalent Organic Framework for Metal‐Free Electrocatalytic Nitrate‐to‐Ammonia Conversion

Angewandte Chemie, EarlyView.
A metal‐free fluorinated ketazine‐linked COF is introduced as an efficient electrocatalyst for nitrate reduction to ammonia under neutral conditions. Fluorine substitution enhances π–π stacking and crystallinity, enabling a Faradaic efficiency of 59.9% and an NH3 yield rate of 1639.9 µmol h−1 mgCOF−1 at −0.9 V versus RHE. This establishes an unexplored
Islam E. Khalil, Ashadul Adalder, Badr Elkamash, Narad Barman, Darosch Asgari, Luoxing Xiang, Warisha Tahir, Franziska Hess, Ranjit Thapa, Adisak Boonchun, Uttam Kumar Ghorai, Prasenjit Das, Arne Thomas   +12 more
wiley   +1 more source

Geographical Traceability of <i>Zanthoxylum schinifolium</i> Sieb. et Zucc. Using Stable Isotope and Multi-Element Fingerprinting Combined with Chemometrics. [PDF]

Foods
Zhang W, Zeng T, Fu T, Huang Y, Ji B, Meng X, Fan Y, Tang M.   +7 more
europepmc   +1 more source

π‐Radical Cascades to Peri‐Fused Triangulene Dimers

Angewandte Chemie, EarlyView.
We demonstrate the potential of open‐shell molecular graphene fragments as synthons for constructing graphene nanostructures via π‐radical cascades. By identifying monoradical intermediates as key selectivity‐determining species and tuning steric effects in a triangulene precursor, we show that reactivity in a formally diradical system can be ...
Paula L. Widmer, Leoš Valenta, Maximilian Mayländer, Jules Hutter, Francis J. Carta, Simon Jurt, Olivier Blacque, Laurent Bigler, Sabine Richert, Tomáš Šolomek, Michal Juríček   +10 more
wiley   +1 more source

Soil evaporation and plant water use strategy of riparian forests in extremely arid deserts, northwestern China: a stable isotope perspective. [PDF]

Front Plant Sci
Zhang Q, Feng Q, Su Y, Liu W, Zhu M, Xue Y.   +5 more
europepmc   +1 more source

Chelator‐Free Radiometal Labeling Inside Engineered Affibodies

Angewandte Chemie, EarlyView.
Affibodies are compact and robust three‑helix binders used in imaging and therapy. Engineering a triple‑cysteine motif into their core enables chelator‑free binding of important radiometals, like Bi(III), Pb(II), In(III), and Ga(III) with rapid uptake and exceptional stability.
Lani J. Davies, Upamali Somathilake, Santhanalaxmi Kumaresan, Frank Bruchertseifer, Alfred Morgenstern, Sarah Spreckelmeyer, Christoph Nitsche   +6 more
wiley   +1 more source