Results 31 to 40 of about 17,928 (220)

Ammonium Salts as Curing Agents to Obtain Ionic Epoxy Resins With a Thermoplastic‐to‐Thermoset Transition

Advanced Materials, EarlyView.
Ionic epoxy networks are prepared using ammonium salts as hardeners, leading to a two‐stage curing process with a thermoplastic‐like intermediate. This uncommon behavior enables extrusion and fabrication of thermoplastic prepregs that can be cured into thermoset composites.
Izabela Kurowska, Leire Unanue, Itxaso Calafel, Dorleta Otaegui, Jorge L. Olmedo‐Martínez, Lourdes Irusta, Daniel Vinagre, Nora Aranburu, Nerea Casado, Ibon Odriozola, David Mecerreyes   +10 more
wiley   +1 more source

Fabrication, Properties, and Applications of Scaffolds for Bone Tissue Regeneration

Advanced Materials Technologies, EarlyView.
This review explores cutting‐edge biomaterials and fabrication techniques for scaffolds in bone tissue regeneration. It conducts a critical comparison of various strategies, meticulously analyzes the key contradictions in the field, and outlines an integrated development path spanning from biomaterial selection to clinical application, while ...
Shangsi Chen, Min Wang
wiley   +1 more source

A Precisely Bromo‐Functionalized [9]Cycloparaphenylene as a Platform for Late‐Stage Multisite π‐Extension Toward Chiral Nanohoops

Angewandte Chemie, EarlyView.
Precisely synthesized hexabrominated [9]cycloparaphenylene (CPP), accessed by a gold‐mediated method, enables efficient multisite post‐functionalization through cross‐coupling reactions. Late‐stage π‐extension on the CPP framework successfully affords armchair‐type chiral nanohoops exhibiting strong circularly polarized luminescence (|glum| = 0.100 ...
Naoya Kinoshita, Nanami Kotani, Masaya Sugiura, Kotaro Matsumura, Daisuke Sakamaki, Daiki Tauchi, Masashi Hasegawa, Hidetoshi Kawai, Yoshitaka Tsuchido   +8 more
wiley   +2 more sources

Scientific Opinion on Flavouring Group Evaluation 82, Revision 1 (FGE.82Rev1): Consideration of Epoxides evaluated by the JECFA (65th meeting) [PDF]

EFSA Journal, 2014
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to consider evaluations of flavouring substances assessed since 2000 by the Joint FAO/WHO Expert Committee on Food Additives
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Protein Language Model‐Guided Engineering of a 2,3‐Butanediol Dehydrogenase for the Enantioselective Synthesis of Cyclic α‐Hydroxy Ketones

Advanced Science, EarlyView.
A (2R,3R)‐butanediol dehydrogenase from Bacillus subtilis (BsBDH) is engineered for the enantioselective synthesis of 2‐hydroxycyclohexanone. A PASS computational design strategy is proposed to enhance the thermostability of BsBDH. Moreover, ESM‐1v combined with ISM is utilized for enhancing and inverting its stereoselectivity.
Haote Ding, Ling Jiang, Yijia Song, Zhongji Pu, Lirong Yang, Haoran Yu   +5 more
wiley   +1 more source

Comprehensive Mapping of Compositional Dynamics in the Formose Reaction Network

Angewandte Chemie, EarlyView.
Mass spectrometric mapping of target and non‐target products in the formose reaction network was achieved using van Krevelen diagrams and Kendrick mass defect plots. The developed visualization framework offers a powerful means to guide rational strategies for reaction control.
Hiroaki Nishijima, Hiro Tabata, Yoko Hase, Rika Miyake, Shuji Nakanishi   +4 more
wiley   +2 more sources

Host–guest interactions in nor-seco-cucurbit[10]uril: novel guest-dependent molecular recognition and stereoisomerism

Beilstein Journal of Organic Chemistry, 2019
The unique monomer and excimer fluorescence emissions of pyrene were first exploited as distinctly photophysical signals to identify the possible diastereomers of guests within nor-seco-cucurbit[10]uril (NS-CB[10]) cavities.
Xiaodong Zhang, Wei Wu, Zhu Tao, Xin-Long Ni   +3 more
doaj   +1 more source

Stimuli‐Responsive Supramolecular Biomaterials for Cancer Theranostics

Advanced Science, EarlyView.
The ultimate goal of cancer theranostics is to get imaging agents and therapeutic cargo to tumor sites when and where they are required. “Smart” systems should be developed. This review discusses the characteristics of physiological stimuli, types and action modes of external stimuli, construction approaches and working principles, as well as ...
Wenting Hu, Binglin Ye, Guocan Yu, Feihe Huang, Zhengwei Mao   +4 more
wiley   +1 more source

Unexpected Dual Function of Plant YUCCA Enzymes Links Chlorophyll Catabolism to Auxin Homeostasis

Angewandte Chemie, EarlyView.
YUCCA enzymes are well known to catalyze the main step of auxin biosynthesis in plants. Here, a hitherto undescribed dual function was discovered, revealing that some YUCCAs also act in chlorophyll degradation. In vitro feedback regulation furthermore suggests a link between chlorophyll degradation and hormone homeostasis and a physiological role of ...
Sina Rütschlin, Lei Zhang, Cornelia A. Karg, Michael Zwerger, Johanna M. Gostner, Simone Moser, Robin Teufel   +6 more
wiley   +2 more sources

PECULIARITIES OF SEASON BIORHYTHMS IN DIFFERENT PARTS OF FUNCTIONAL SYSTEM MOTHER-PLACENTA-FETUS IN DEPENDENCE ON ITS STEREOFUNCTIONAL ORGANIZATION IN PHYSIOLOGICAL AND COMPLICATED PREGNANCY

Медицинский вестник Юга России, 2013
Purpose: studying seasonal periodicity of stereoisomerism of uteroplacental complex, the dynamics of body weight of infants, studying the chronostructure of mezorhythms of contractive activity of right and left parts of the uterus.Material and Methods ...
N. A. Rogova, T. L. Botasheva, A. V. Chernositov, L. V. Kaushanskaya, E. M. Alexandrova   +4 more
doaj   +1 more source