Results 291 to 300 of about 6,844,164 (402)

Utilization of Lung Cancer Registries in Learning Health Systems for Health Care Improvement. [PDF]

open access: yesJCO Clin Cancer Inform
Stirling RG   +8 more
europepmc   +1 more source

Effectiveness of different de-implementation strategies in primary care: systematic review and meta-analysis. [PDF]

open access: yesBMJ Med
Raudasoja A   +26 more
europepmc   +1 more source

Early Results of Using AI in Mammography Screening for Breast Cancer. [PDF]

open access: yesJ Clin Med
Sandler Rahat H   +7 more
europepmc   +1 more source

Defluoroalkylation of Trifluoromethane with Organolithium Reagents: Mechanism and Synthesis of Fluoroalkenes

open access: yesAngewandte Chemie, EarlyView.
We report a rare example of the transformation of HCF3 into a fluoroalkene functional group through defluoroalkylation. We rationalise product formation through DFT calculations, scale‐up the synthesis through continuous flow methods, and show that a fluoroalkene reagent derived from HCF3 is a competent nucleophile for the fluoroethenylation of a range
Hodan R. Warsame   +4 more
wiley   +1 more source

On the Nature of Improper Hydrogen Bonding in RCH2F and RCHF2 Motifs

open access: yesAngewandte Chemie, EarlyView.
The nature of ‘improper’ hydrogen bonds is explored in FnC─H⋯X systems, such as RCF2H interaction with chloride and water. It is noted that increased fluorination decreases the positive charge density on H but increases it on C, thus these interactions are dominated by electrostatic attraction to C over H.
Bruno A. Piscelli   +3 more
wiley   +1 more source

Solvation Entropy as a Lever for Steering the Macroscopic Properties of a Functional Supramolecular Helical Polymer

open access: yesAngewandte Chemie, EarlyView.
The structural transition between the two fully‐characterized states of a supramolecular helical hydrogen‐bonded polymer (represented as blue and light pink stacks) can be predictably varied over 85 K by changing the nature and amount of cosolvent; entropy of solvation (schematized as solvents of different sizes) is the main lever to tune the ...
Huanjun Kong   +12 more
wiley   +1 more source

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