Results 101 to 110 of about 253,481 (293)

AI‐Assisted IoT‐Enabled ECG Monitoring: Integrating Foundational and Generative AI Tools for Sustainable Smart Healthcare—Recent Trends

open access: yesAI &Innovation, EarlyView.
ABSTRACT The rapid evolution of the Internet of Things (IoT) has significantly advanced the field of electrocardiogram (ECG) monitoring, enabling real‐time, remote, and patient‐centric cardiac care. This paper presents a comprehensive survey of AI assisted IoT‐based ECG monitoring systems, focusing on the integration of emerging technologies such as ...
Amrita Choudhury   +2 more
wiley   +1 more source

Two‐Dimensional Infrared Spectroscopy Reveals the Presence of a Bridging CO Ligand in Two Catalytic Intermediates of [FeFe] Hydrogenase

open access: yesAngewandte Chemie, EarlyView.
Two‐dimensional (2D) infrared (IR) spectroscopy provides vastly more structural and functional insight into chemical and biological systems than linear IR spectroscopy. Here, we apply 2D‐IR spectroscopy to two controversially discussed states of the [FeFe] hydrogenase active site, revealing the presence of a bridging carbonyl ligand, which is difficult
Cornelius C. M. Bernitzky   +7 more
wiley   +2 more sources

Hydride-Induced Responses in the Mechanical Behavior of Zircaloy-4 Sheets

open access: yesMetals
This study aimed to investigate the impact of hydrogen content, up to 1217 ppm, on the mechanical properties of Zircaloy-4, with a particular focus on the formation and impact of hydrides.
Hsiao-Ming Tung, Tai-Cheng Chen
doaj   +1 more source

Homogeneous CO Hydrogenation: Dihydrogen Activation Involves a Frustrated Lewis Pair Instead of a Platinum Complex [PDF]

open access: yes, 2010
During a search for conditions appropriate for Pt-catalyzed CO reduction using dihydrogen directly, metal-free conditions were discovered instead.
Bercaw, John E.   +2 more
core   +1 more source

Mimikry eines Lichtsammelkomplexes zur Beschleunigung der Photooxidation in asymmetrischen Lipidmembran‐Nanoreaktoren

open access: yesAngewandte Chemie, EarlyView.
Biomimetische Liposomen‐Nanoreaktoren, die natürliche Lichtsammelkomplexe nachahmen, ermöglichen eine effiziente Photooxidation von NADH. Membrangebundenes Fluorescein überträgt Energie über FRET an membrangebundenes Eosin Y und oxidiert so NADH.
Julian Bösking   +13 more
wiley   +1 more source

Structurally Constrained Stibenium: Metallomimetic C−Si Bond Activation

open access: yesAngewandte Chemie, EarlyView.
A structurally constrained stibenium cation supported by a 2,6‐bis(o‐carborano)pyridine pincer‐type ligand was prepared, and its preliminary reactivity toward silanes was investigated. Remarkably, Si−C bonds in silanes undergo activation via an oxidative‐addition‐type process at the cationic Sb center.
Donia Toami, Roman Dobrovetsky
wiley   +2 more sources

LaNi5 hydride cryogenic refrigerator test results [PDF]

open access: yes, 1983
A complete LaNi5 hydrogen absorption cryogenic refrigerator system was developed. The system uses low temperature waste heat of approximately 100 C as a power source, and has no moving parts other than self operating valves.
Jones, J. A.
core   +1 more source

Isolation und Reaktivtät eines quadratisch‐planaren Trisamidosilans

open access: yesAngewandte Chemie, EarlyView.
Wir berichten über die Synthese und umfassende Charakterisierung eines quadratisch‐planaren Si(+IV)‐Hydrids, das von einem unsymmetrischen, trianionischen und dearomatisierten N,N,N‐Pincerliganden stabilisiert wird. Dieses System ermöglicht eine Element–Liganden‐kooperative Reaktivität als Alternative zur siliciumzentrierten Redoxchemie und erweitert ...
David M. J. Krengel   +5 more
wiley   +1 more source

Consequences of Medium‐Pore Zeolite Constraints for Alkene Cracking—The Case of n‐Pentene

open access: yesAngewandte Chemie, EarlyView.
Alkene cracking in medium‐pore zeolites is governed by a balance of enthalpic and entropic effects. Intrinsic barriers are quantified and shown to be lower than for alkanes due to stabilization of carbenium‐ion‐like transition states. Confinement and extra‐framework aluminum modulate reactivity by tuning transition‐state energetics, providing a ...
Ruixue Zhao   +4 more
wiley   +2 more sources

Curable liquid hydrocarbon prepolymers containing hydroxyl groups and process for producing same [PDF]

open access: yes, 1978
Production of hydroxyl containing curable liquid hydrocarbon prepolymers by ozonizing a high molecular weight saturated hydrocarbon polymer such as polyisobutylene or ethylene propylene rubber is discussed. The ozonized material is reduced using reducing
Ingham, J. D., Rhein, R. A.
core   +1 more source

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