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Azobis(polynitrophenyl-1,2,5-oxadiazoles) as Heat-Resistant Friction-Insensitive Energetic Materials.
J Org Chem
January 2025
N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russian Federation.
The evolution of energetic materials science presents new challenging tasks associated with the creation of advanced technologies for sustainable development of the future. In this work, a set of new heat-resistant high-energy materials incorporating the polynitrophenyl-1,2,5-oxadiazole scaffold enriched with azo/azoxy moieties have been designed and synthesized. Due to a smart combination of explosophoric groups and 1,2,5-oxadiazole rings, the prepared high-energy substances have excellent thermal stability (up to 300 °C), good densities (up to 1.
View Article and Find Full Text PDFAntioxidant and pH-dependent cationic and anionic dye degradation activities of optimum synthesized organic@inorganic Cu hybrid nanoflowers.
Int J Phytoremediation
January 2025
Faculty of Science, Department of Biology, Erciyes University, Kayseri, Turkey.
First time in this study, hybrid Cu nanoflowers (Cu hNFs) were synthesized with algae extract and the pH-dependent catalytic activities of hNFs synthesized under optimum conditions against brilliant blue and methylene blue dyes were determined. Ideal morphology of hNFs, were synthesized by using 1 ml extract in PBS (pH 7.4).
View Article and Find Full Text PDFAntioxidant peptides from silver carp steak by alkaline protease and flavor enzyme hydrolysis: Characterization of their structure and cytoprotective effects against HO-induced oxidative stress.
J Food Sci
December 2024
College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China.
Article Synopsis
- This study focused on extracting antioxidant peptides from silver carp steak using a dual enzymatic method and evaluated their structure and antioxidant activity.
- The optimal conditions for extraction were identified, leading to a specific component (SCSAP-3kDa) that exhibited high antioxidant capabilities across several metrics.
- The identified peptides demonstrated protective effects against oxidative stress in liver cells and show promise for use as functional food ingredients in the industry.
Levels of Natural Antibodies Before and After Immunoglobulin Replacement Treatment Affect the Clinical Phenotype in Common Variable Immunodeficiency.
J Clin Immunol
September 2024
Laboratory of Immunology, Department of Immunology, Hellenic Pasteur Institute, Athens, Greece.
Article Synopsis
- Natural antibodies (NAbs) are essential for immune defense and regulation, playing a role in preventing autoimmunity and maintaining immune balance, particularly relevant in conditions like Common Variable Immunodeficiency (CVID).
- This study analyzed NAb levels in 56 CVID patients and healthy controls, revealing that IgM NAb levels were significantly lower in IgRT-treated patients compared to untreated patients and controls, with treatment not fully restoring these levels.
- The findings suggest a link between low NAb levels and recurrent infections, while patients with enteropathy or autoimmune diseases showed higher IgM NAb levels, indicating that NAb levels may help monitor disease progression in CVID.
Energetic derivatives substituted with trinitrophenyl: improving the sensitivity of explosives.
Dalton Trans
November 2024
Department of Chemistry, University of Idaho, Moscow, Idaho 83844-2343, USA.
The incorporation of trinitrophenyl-modified 1,3,4-oxadiazole fragments is commonly observed in high-energy molecules with heat-resistant properties. This study explores the strategy of developing heat-resistant energetic materials by incorporating trinitrophenyl and an azo group into 1,3,4-oxadiazole, which involved the synthesis and characterization of ()-1,2-bis(5-(2,4,6-trinitrophenyl)-1,3,4-oxadiazol-2-yl)diazene (2), -(5-(2,4,6-trinitrophenyl)-1,3,4-oxadiazol-2-yl)nitramide (3), and the energetic salts of 3. Characterization techniques employed included H and C NMR, IR and elemental analysis.
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