Results 181 to 190 of about 20,776 (353)

Atroposelective Construction of Axially Chiral Tetraarylethenes Via NHC‐Catalyzed Desymmetrization

open access: yesAdvanced Science, EarlyView.
We report the first NHC‐catalyzed atroposelective synthesis of axially chiral TAEs via oxidative desymmetrization of prochiral TAE dialdehydes. This catalytic strategy operates under mild conditions and accommodates a broad range of phenolic and nitrogen nucleophiles, delivering diverse axially chiral TAEs in good yields and up to 99% ee.
Yang‐Ze Zheng   +6 more
wiley   +1 more source

Two-stage Temperature Change Chrome Tanning: A More Sustainable Tanning Process

open access: yes, 2019
Under the guidance of molecular simulation of Cr(III) species inwater solution, a novel chrome tanning process, the two-stagetemperature change chrome tanning, was developed.
Zhou, Jianfei   +3 more
core  

Tan lejos, tan cerca

open access: yes, 2019
Es reseña de:Tan lejos, tan cerca: mi vidaAdolfo MarsillachTusquets editores, 1998.
openaire   +2 more sources

Electrohydraulic Folding Ring Actuators for Radially Contracting Applications

open access: yesAdvanced Science, EarlyView.
This work presents an Electrohydraulic Folding Ring Actuator that combines high‐performance electrohydraulic actuation with origami‐inspired folding geometry to achieve constricting radial actuation. This integration yields significant inner lumen constriction, alongside a gripping force capable of holding objects exceeding four times the actuator's ...
Gavril Yong En Tan   +4 more
wiley   +1 more source

Persistent gaps in skin cancer prevention. [PDF]

open access: yesEClinicalMedicine
eClinicalMedicine.
europepmc   +1 more source

Metasurface‐Enabled Active‐Like Passive Radar

open access: yesAdvanced Science, EarlyView.
A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li   +7 more
wiley   +1 more source

Tanning of Substrates Using Ionic Liquids

open access: yes, 2015
The invention provides a process for tanning a substrate using at least one ionic liquid. The at least one ionic liquid can be used in at least one of the following tanning steps: tanning, re-tanning, preservation, liming, pickling, impregnation ...
Guthrie-Strachan, Jeffry   +2 more
core  

A tanned cadaver

open access: yesCeylon Medical Journal, 2009
P R, Ruwanpura, J, Warushahennadi
openaire   +3 more sources

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