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排序方式: 共有125条查询结果,搜索用时 15 毫秒
51.
Rokeya Akter Md. Habibur Rahman Deepak Kaushik Vineet Mittal Diana Uivarosan Aurelia Cristina Nechifor Tapan Behl Chenmala Karthika Manuela Stoicescu Mihai Alexandru Munteanu Cristiana Bustea Simona Bungau 《Molecules (Basel, Switzerland)》2021,26(17)
Extensive experimental, clinical, and epidemiological evidence has explained and proven that products of natural origin are significantly important in preventing and/or ameliorating various disorders, including different types of cancer that researchers are extremely focused on. Among these studies on natural active substances, one can distinguish the emphasis on resveratrol and its properties, especially the potential anticancer role. Resveratrol is a natural product proven for its therapeutic activity, with remarkable anti-inflammatory properties. Various other benefits/actions have also been reported, such as cardioprotective, anti-ageing, antioxidant, etc. and its rapid digestion/absorption as well. This review aims to collect and present the latest published studies on resveratrol and its impact on cancer prevention, molecular signals (especially p53 protein participation), and its therapeutic prospects. The most recent information regarding the healing action of resveratrol is presented and concentrated to create an updated database focused on this topic presented above. 相似文献
52.
Lisa Ring Bruno G. Pollet Marian Chatenet Sofyane Abbou Karsten Küpper Mercedes Schmidt Marten Huck Aurelia Gries Martin Steinhart Helmut Schfer 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(48):17544-17553
The electrodeposition of noble metals using corresponding dissolved metal salts represents an interesting process for the improvement of the electrocatalytic hydrogen evolution reaction (HER) properties of less active substrate materials. The fact that only a small fraction of the dissolved noble metals reaches the substrate represents a serious obstacle to this common procedure. We therefore chose a different path. It was found that the HER activity of Ni42 alloy drastically increased (η=140 mV at j=10 mA cm?2; pH 1) when a platinum counter electrode was used during polarization experiments in acid. This improvement was caused by a platinum transfer from the platinum anode to the steel cathode, a process which occurred simultaneously to the hydrogen evolution. The negligible accumulation of Pt (26 μg) in the electrolyte turns this straight‐forward transfer procedure into a highly cost‐effective, environmentally friendly, and waste reducing approach for the generation of cheap, stable and effective HER electrodes. 相似文献
53.
Bartlomiej?Sojka Aurelia?Liskova Miroslava?Kuricova Mateusz?Banski Jan?Misiewicz Maria?Dusinska Mira?Horvathova Silvia?Ilavska Michaela?Szabova Eva?Rollerova Artur?PodhorodeckiEmail author Jana?TulinskaEmail author 《Journal of nanoparticle research》2017,19(2):68
Sodium fluoride-based β-NaLnF4 nanoparticles (NPs) doped with lanthanide ions are promising materials for application as luminescent markers in bio-imaging. In this work, the effect of NPs doped with yttrium (Y), gadolinium (Gd), europium (Eu), thulium (Tm), ytterbium (Yb) and terbium (Tb) ions on phagocytic activity of monocytes and granulocytes and the respiratory burst was examined. The surface functionalization of <10-nm NPs was performed according to our variation of patent pending ligand exchange method that resulted in meso-2,3-dimercaptosuccinic acid (DMSA) molecules on their surface. Y-core-based NCs were doped with Eu ions, which enabled them to be excited with UV light wavelengths. Cultures of human peripheral blood (n = 8) were in vitro treated with five different concentrations of eight NPs for 24 h. In summary, neither type of nanoparticles is found toxic with respect to conducted test; however, some cause toxic effects (they have statistically significant deviations compared to reference) in some selected doses tested. Both core types of NPs (Y-core and Gd-core) impaired the phagocytic activity of monocytes the strongest, having minimal or none whatsoever influence on granulocytes and respiratory burst of phagocytic cells. The lowest toxicity was observed in Gd-core, Yb, Tm dopants and near-infrared nanoparticles. Clear dose-dependent effect of NPs on phagocytic activity of leukocytes and respiratory burst of cells was observed for limited number of samples. 相似文献
54.
The total synthesis of the naturally occurring kinase inhibitor pyridovericin 1 is reported. A flexible and efficient synthesis has been accomplished in good yield from readily available 2,4-dihydroxypyridine. Pyridovericin is a key intermediate in our proposed biomimetic synthesis of pyridomacrolidin 2. 相似文献
55.
Maria Aurelia Morello 《Mikrochimica acta》1940,28(3-4):245-253
Zusammenfassung Nach kurzem Hinweis auf bibliographische Unterlagen über den Nachweis des Eisens in Pflanzen und auf Grund der bereits nachgewiesenen Bedeutung des Sparteinrhodanids als Reagens zur mikrochemischen Erkennung des Ferri-Ionsin situ ermittelt die Verfasserin an den verschiedenen Organen von 42 verschiedenen Pflanzen die Anwesenheit und Verteilung des Eisens und stellt die erhaltenen Versuchsergebnisse in einer Übersichtstafel zusammen.
Mit 2 Abbildungen. 相似文献
Résumé (W) Après une brève référence aux sont ces bibliographiques relatives à l'identification du fer dans les plantes, d'autre part sur la base de l'action déjà démontrée du sulfocyanure de spartéine en qualité de microréactif des ions fer III «in situ», l'auteur décèle la présence et la répartition du fer dans les divers organes de 42 plantes la différentes; elle établit ensuite un tableau synoptique des résultats obtenus.
Mit 2 Abbildungen. 相似文献
56.
Aurelia Pascariu Gheorghe Ilia Alina Bora Alina Bora Smaranda Iliescu Adriana Popa Gheorghe Dehelean Liliana Pacureanu 《Central European Journal of Chemistry》2003,1(4):491-534
Wittig and Wittig-Horner reactions are favorite tools in preparative organic chemistry. These olefination methods enjoy widespread
and recognition because of their simplicity, convenience, and effciency. Phase transfer catalysis (PTC) is a very important
method in synthetic organic chemistry having many advantages over conventional, homogenous reaction procedures. In this paper,
we attempt to summarize the aspects concerning Wittig and Wittig-Horner reactions that take place under phase transfer catalysis
conditions. 相似文献
57.
58.
59.
Rodica Vladoiu Victor Ciupina Mirela Contulov Virginia Dinca Aurelia Mandes Vilma Bursikova 《Plasma Chemistry and Plasma Processing》2012,32(2):219-229
The aim of this contribution is to present the properties of the nanostructured hydrogenated carbon thin films and to study
their growth carried out in a special deposition technique based on Thermionic Vacuum Arc method. The Gaseous Thermionic Vacuum
Arc (G-TVA) technology is an original deposition method performed in a special configuration, consisting of a heated thermionic
cathode which provides an electron beam on the anode. The surface free energy was evaluated by contact angle and their optical
properties were studied by Filmetrics F20 spectrometry system. Structure of the film has been investigated by Raman spectroscopy
as well as the mechanical properties like hardness, wear resistance, film-substrate adhesion. The films showed two distinct
Raman characteristic peaks located at 1,350 cm−1 (D-line) and 1,550 cm−1 (G-line), broad for Si and very sharp for glass substrates. The G-TVA enables to prepare soft (hardness ~6 GPa) or hard (~24 GPa)
films. 相似文献
60.
Ashley Ringer McDonald Jessica A. Nash Paul S. Nerenberg K. Aurelia Ball Olaseni Sode Jonathon J. Foley IV Theresa L. Windus T. Daniel Crawford 《International journal of quantum chemistry》2020,120(20):e26359
The Molecular Sciences Software Institute (MolSSI) is an National Science Foundation (NSF) funded institute that focuses on improving software, education, and training in the computational molecular sciences. Through a collaboration with the Molecular Education and Research Consortium in Undergraduate computational chemistRY (MERCURY), the MolSSI has developed resources for undergraduate and other early career students to lay an educational foundation for the next generation of computational molecular scientists. The resources focus on introducing best practices in software engineering to students from the very start to make their software more useable, maintainable, and reproducible. 相似文献