Results 61 to 70 of about 5,509 (177)

Examination of the Potential for Adaptive Chirality of the Nitrogen Chiral Center in Aza-Aspartame

open access: yesMolecules, 2013
The potential for dynamic chirality of an azapeptide nitrogen was examined by substitution of nitrogen for the α-carbon of the aspartate residue in the sweetener S,S-aspartame.
Samir H. Bouayad-Gervais   +1 more
doaj   +1 more source

Enantioselective Growth of Chiral Serine‐Induced β‐Ag2Se Crystals from an Organoselenium Compound

open access: yesAdvanced Functional Materials, Volume 36, Issue 22, 16 March 2026.
Chiral amino acids direct the enantioselective crystallization of β‐Ag2Se nanocrystals from an organoselenium precursor. L‐ and D‐serine induce distinct morphologies and opposite homochiral adsorption preferences, transferring molecular handedness into the inorganic lattice.
Matan Oliel   +5 more
wiley   +1 more source

Development of biomimetic enzyme-linked immunosorbent assay based on molecular imprinting technique for semicarbazide detection

open access: yesFood and Agricultural Immunology, 2020
Herein, we present a direct competitive biomimetic enzyme-linked immunosorbent assay (BELISA) method for the determination of semicarbazide (SEM) using a molecularly imprinted polymer (MIP) film as the bionic antibody. The best monomer (methacrylic acid)
Wenlong Yu   +5 more
doaj   +1 more source

Decoding Urease Inhibition: A Comprehensive Review of Inhibitor Scaffolds

open access: yesChemMedChem, Volume 21, Issue 2, January 2026.
Representative functional groups known for urease inhibition are reviewed within diverse scaffolds using structure–activity analyses to identify features associated with high inhibitory activity. Urease is a metalloenzyme produced by a wide range of organisms and plays a critical role in nitrogen microbial metabolism by catalyzing the hydrolysis of ...
Nuno Martinho, Natália Aniceto
wiley   +1 more source

Some semicarbazide derivatives and their antimicrobial activity

open access: yesCommunications, Faculty Of Science, University of Ankara Series B Chemistry and Chemical Engineering, 1993
Various semicarbazides and thiosemicarbazides (1-5) and their cyclised products, triazoles, oxadiazoles and thiadiazoles (6-9) have been reported to possess antibacterial, antitubercular and antifungal activities. Based on these findings it w as of interest to prepare some new arylsemicarbazide and arylthiosemicarbazide derivatives and to evaluate ...
F. Abd EL-AZEEM   +2 more
openaire   +2 more sources

Influence of Material Viscosity on the Properties of Extruded High‐Consistency Silicone Rubber Foam Profiles

open access: yesAdvances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.
High‐consistency silicone rubbers can be foamed with various chemical and physical blowing agents. However, due to the toxic and, therewith, harmful effects of chemical blowing agents, physical blowing agents are becoming increasingly important. In this thesis, the influence of the viscosity adjusted via the silica content of different high‐consistency
Timo Hofmann   +3 more
wiley   +1 more source

Convulsant Effects of Semicarbazide in Epileptic Monkeys.

open access: yesExperimental Biology and Medicine, 1956
Summary(1) Threshold convulsant dosages to rapid intravenous injection of semicarbazide were significantly lower in chronically epileptic monkeys than in normal unoperated controls. (2) Clinical seizures following intravenous injection of threshold convulsant doses of semicarbazide occurred after a latent period of 2 to 3 1/2 hours. With suprathreshold
L M, KOPELOFF, J G, CHUSID, N, KOPELOFF
openaire   +2 more sources

Enhancing Open‐Circuit Voltage and Fill Factor in Sn‐Based Perovskite Solar Cells: Challenges and Opportunities for Sustainable Photovoltaics

open access: yesSusMat, Volume 5, Issue 6, December 2025.
This review summarizes advances in tin (Sn)‐based perovskite solar cells, a promising lead‐free alternative. It examines the main causes of Voc and fill factor losses, including Sn2+ oxidation, undercoordinated sites, and deep‐level traps. Strategies such as molecular coordination, surface passivation, compositional tuning, interface engineering, and ...
Padmini Pandey   +4 more
wiley   +1 more source

Synthesis and reducing power assay of methyl semicarbazone derivatives

open access: yesJournal of Saudi Chemical Society, 2014
In the present study we have designed a new pharmacophore ‘Chalconesemicarbazone’ by pharmacophore hybridization approach of drug design. A series of novel chalconesemicarbazones was synthesized and evaluated for their antioxidant activity by reducing ...
Manmohan Singhal   +2 more
doaj   +1 more source

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