Results 81 to 90 of about 1,419,767 (285)

From Waste to Catalyst: The Properties of Mixed Oxides Derived from Layered Double Hydroxide Mg/Al Synthesized from Aluminum Residues and Their Use in Transesterification

Reactions
Mixed oxides were obtained via calcination at 550 °C from layered double hydroxides (LDHs), which were synthesized in a previous study via co-precipitation and co-precipitation followed by hydrothermal treatment using aluminum residues as the source of ...
Tarsila Santos da Silva, Laura Leticia Freitas Ferreira da Silva, Evellyn Patricia Santos da Silva, Rayssa Jossanea Brasileiro Motta, Bruno José Barros da Silva, Mario Roberto Meneghetti, Lucas Meili, Simoni Margareti Plentz Meneghetti   +7 more
doaj   +1 more source

Preparation of tantalum carbide films by reaction of electrolytic carbon coating with the tantalum substrate [PDF]

, 2006
This article demonstrates that coatings of tantalum carbide can be obtained by electrodeposition of carbon in molten fluorides on a tantalum substrate as an alternative to the CVD process.
Chamelot, Pierre, Massot, Laurent, Taxil, Pierre   +2 more
core   +2 more sources

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

New Derivatives of Oleanolic Acid: Semi-Synthesis and Evaluation of Their Anti-15-LOX, Anti-α-Glucosidase and Anticancer Activities and Molecular Docking Studies

Chemistry
A novel series of oleanolic acid (OA, 1) derivatives incorporating phenolic and coumarin moieties were synthesized. This acid was extracted from olive pomace (Olea europaea L.) using an ultrasound-assisted method.
Nahla Triaa, Salma Jlizi, Mansour Znati, Hichem Ben Jannet, Jalloul Bouajila   +4 more
doaj   +1 more source

Quantitative determination of the nucleophilicity of allylsilanes [PDF]

, 1989
Kinetic investigations on the reactivity of allylsilanes (1a–o) towards the p-methoxy substituted diphenylcarbenium ion (2) are ...
Hagen, Gisela, Mayr, Herbert
core   +1 more source

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

Atmospheric chemistry of bioaerosols: heterogeneous and multiphase reactions with atmospheric oxidants and other trace gases. [PDF]

, 2016
Advances in analytical techniques and instrumentation have now established methods for detecting, quantifying, and identifying the chemical and microbial constituents of particulate matter in the atmosphere.
Estillore, Armando D, Grassian, Vicki H, Trueblood, Jonathan V   +2 more
core   +2 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Advances in Research on Semi-Synthesis, Biotransformation and Biological Activities of Novel Derivatives from Maslinic Acid

Chemistry
Since ancient times, humans have turned to medicinal plants for treating various ailments and curing specific diseases, as these natural plants serve as the primary source of a range of phytochemicals, including triterpenes.
Yosra Trabelsi, Mansour Znati, Hichem Ben Jannet, Jalloul Bouajila   +3 more
doaj   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source