Results 191 to 200 of about 579,688 (424)

Double‐Sided Control of Product Type Preference in the Visible‐Light Initiated Reaction of 1,3‐Dicarbonyl Compounds with Alkenes

Advanced Synthesis &Catalysis, EarlyView.
Abstract The demonstrated light‐initiated addition of radicals formed on an active methylene group to styrene derivatives exhibits a product selectivity influenced by the presence of a protic solvent. Under protic conditions, the predominant products are branched compounds with the alkene moiety attached to the methylene group.
Małgorzata Pałyga, Jan Rzepiela, Sebastian Baś   +2 more
wiley   +1 more source

The gait of the American trotter and pacer

, 1910
Rudolf Jordan
openalex   +2 more sources

Automatic Mode Switching in Atrial Fibrillation [PDF]

, 2005
Automatic mode switching (AMS) algorithms were designed to prevent tracking of atrial tachyarrhythmias (ATA) or other rapidly occurring signals sensed by atrial channels, thereby reducing the adverse hemodynamic and symptomatic consequences of a rapid ...
Antonio De, Simone, Enrico, Romano, Giuseppe, Stabile   +2 more
core  

Tunable Preparation of β‐Substituted Alkenoate Esters via Radical Alkenylation of C(sp3)–H Bonds with Allenoates

Advanced Synthesis &Catalysis, EarlyView.
Abstract A photocatalytic strategy for the radical alkenylation of aliphatic C(sp3)–H bonds with 2,3‐allenoate esters is described. The protocol takes place upon irradiation of the reaction mixture in the presence of the decatungstate anion, which triggers C−H cleavage in the chosen aliphatic substrates.
Alexandra Jorea, Roberto Chessa, Davide Ravelli   +2 more
wiley   +1 more source

Transesophageal Electrophysiological Study in Management of Pediatric tachyarrhythmias

Indian Pacing and Electrophysiology Journal, 2022
A. Manickavasagam, S.C.S. Patloori, H.T. Perla, D. Chase, J. Roshan   +4 more
doaj  

Artificial pacing in management of complete heart block complicating acute myocaerdial infarction. [PDF]

, 1968
B. W. Lassers, Desmond G. Julian
openalex   +1 more source

Heterogeneously Catalyzed Cascade Oxidative Coupling/Dearomative Spirocyclization of Diarylamines: Facile Access to Spiroacridines

Advanced Synthesis &Catalysis, EarlyView.
Abstract Spirocyclic compounds, particularly spirocyclohexadienones, are important in pharmaceuticals due to their biological activity. In this study, we develop a catalytic cascade oxidative spirocyclization of diarylamines for the rapid access to highly functionalized spirocyclohexadienones. Using commercially available recyclable heterogeneous metal
Kenji Matsumoto, Naho Sato, Yoshinori Kobayashi, Kanako Date, Yasuko Okamoto, Touya Kariya, Tsukasa Hirokane, Masahiro Yoshida   +7 more
wiley   +1 more source

An Analysis of Pacing Profiles in Sprint Kayak Racing Using Functional Principal Components and Hidden Markov Models [PDF]

arXiv
This study analysed sprint kayak pacing profiles in order to categorise and compare an athlete's race profile throughout their career. We used functional principal component analysis of normalised velocity data for 500m and 1000m races to quantify pacing.
arxiv  

A short history of the American trotting and pacing horse

, 1906
Henry Coates, George Fleming
openalex   +2 more sources

Diastolic And Systolic Right Ventricular Dysfunction Precedes Left Ventricular Dysfunction In Patients Paced From Right Ventricular Apex [PDF]

, 2006
Background: Cardiac dysfunction after right ventricular (RV) apical pacing is well known but its extent, time frame of appearance and individual effect on left ventricular (LV), RV systolic and diastolic parameters has not evaluated in a systematic ...
Bansal, Sandeep, M, Hasan, MK, Makharia, Puri, Aniket, RK, Saran, SK, Dwivedi, VK, Puri, VS, Narain   +7 more
core