Results 51 to 60 of about 487,838 (354)

Chemoselective Sequential Polymerization: An Approach Toward Mixed Plastic Waste Recycling

Advanced Functional Materials, EarlyView.
Inspired by biological protein metabolism, this study demonstrates the closed‐loop recycling of mixed synthetic polymers via ring‐closing depolymerization followed by a chemoselective sequential polymerizations process. The approach recovers pure polymers from mixed feedstocks, even in multilayer formats, highlighting a promising strategy to overcome a
Gadi Slor, Youwei Ma, Hyunwoo Park, Tae‐Lim Choi, Damien Guironnet, Francesco Stellacci   +5 more
wiley   +1 more source

Composición y capacidad antioxidante in-vitro de aceites esenciales ricos en Timol, Carvacrol, trans-Anetol o Estragol Composition and in-vitro antioxidant capacity of essential oils rich in Thymol, Carvacrol, trans-Anethole or Estragole

Salud UIS, 2009
Se determinó por cromatografía de gases acoplada a espectrometría de masas (GC-MS) la composición química de aceites esenciales (AE), aislados por hidrodestilación asistida por la radiación de microondas (MWHD), de las especies vegetales aromáticas ...
Amner Muñoz-Acevedo, Vladimir V. Kouznetsov, Elena E. Stashenko   +2 more
doaj  

New anionic cobalt(III) complexes enable enantioselective synthesis of spiro-fused oxazoline and iodoacetal derivatives

Frontiers in Chemistry, 2022
Anionic salicylimine-based cobalt (III) complexes featuring chiral ligands derived from isoleucine amino acids were used as efficient bifunctional phase-transfer catalysts for electrophilic iodination of enol ethers. The Brønsted acids of these complexes
Mohamed S. H. Salem, Mohamed S. H. Salem, Shinobu Takizawa   +2 more
doaj   +1 more source

Ultraviolet photodepletion spectroscopy of dibenzo-18-crown-6-ether complexes with alkali metal cations [PDF]

, 2009
Ultraviolet photodepletion spectra of dibenzo-18-crown-6-ether complexes with alkali metal cations (M+-DB18C6, M = Cs, Rb, K, Na, and Li) were obtained in the gas phase using electrospray ionization quadrupole ion-trap reflectron time-of-flight mass ...
Choi, Chang Min, Kim, Hwan Jin, Kim, Nam Joon, Lee, Jun Ho, Shin, Won Jik, Yoon, Tae Oh   +5 more
core   +2 more sources

Quasi‐Static to Supersonic Energy Absorption of Nanoarchitected Tubulanes and Schwarzites

Advanced Functional Materials, EarlyView.
Nanoarchitected energy‐absorptive Tubulanes exhibit record energy absorption under quasi‐static conditions and exceptional inelastic energy dissipation under 750 m s−1 ballistics impact, with high performance spanning strain rates of 12 orders of magnitude.
Peter Serles, Alianna Maguire, Thomas Butruille, Jet Lem, Shuo Yang, Pedro Guerra Demingos, Sahar Choukir, Michel Haché, Boran Kumral, Katherine Jia, Charles Jia, Yu Zou, Chandra Veer Singh, Carlos M. Portela, Jun Lou, Pulickel M. Ajayan, Tobin Filleter   +16 more
wiley   +1 more source

Isocampholenic Acid Derivatives as Potential Fragrances

Molecules
(+)-Isocampholenic acid, prepared in two steps from (1S)-(+)-10-camphorsulfonic acid in 60% yield (on a scale of 172 mmol), served as the starting compound for the synthesis of small libraries of isocampholenic acid derivatives, comprising a total of 60 ...
Luka Ciber, Tjaša Koželj, Kaja Prosenak, Nejc Petek, Franc Požgan, Jurij Svete, Bogdan Štefane, Uroš Grošelj   +7 more
doaj   +1 more source

Quantitative analysis and comparison of the physical properties of O-alkyl and S-alkyl monoethers of glycerol

Journal of Lipid Research, 1969
A homologous series (C10, C12, C14, C16, C18) of synthetic O-alkyl and S-alkyl ethers of glycerol was analyzed by gas-liquid chromatography (GLC) and thin-layer chromatography (TLC), and examined by IR and n.m.r.
Randall Wood, Claude Piantadosi, Fred Snyder   +2 more
doaj   +1 more source

Mass spectrometry-based fragmentation as an identification tool in lignomics [PDF]

, 2010
The ensemble of all phenolics for which the biosynthesis is coregulated with lignin biosynthesis, i.e., metabolites from the general phenylpropanoid, monolignol, and (neo)-lignan biosynthetic pathways and their derivatives, as well as the lignin ...
Akiyama, Takuya, Boerjan, Wout, Dima, Oana, Goeminne, Geert, Inzé, Dirk, Kim, Hoon, Lu, Fachuang, Messens, Eric, Morreel, Kris, Niculaes, Claudiu, Ralph, John, Vanholme, Ruben   +11 more
core   +2 more sources

Ethereal Ethics

PLoS Biology, 2004
In response to the Blackburn and Rowley essay on the President's Council on Bioethics, several thought-provoking opinions on ethical challenges in biomedical research are expressed by prominent ...
openaire   +4 more sources

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

Advanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source