Results 131 to 140 of about 444,692 (336)

Ultraviolet Spectrophotometry of Phenothiazine Derivatives and Analogs

Journal of AOAC INTERNATIONAL, 1973
Abstract Ultraviolet spectral data have been tabulated for 41 phenothiazine derivatives and analogs. The general appearance of the spectra is caused by the structure of the tricyclic π-system, whereas spectral shift effects are produced by R2 substituents.
openaire   +3 more sources

Fabricating multifunctional silver nanoparticles-coated cotton fabric

Arabian Journal of Chemistry, 2017
Silver nanoparticles with high density coating were formed on the surface of cotton fabric through pre-activation by potassium hydroxide and in situ reduction of silver nitrate.
Mohammad Shateri-Khalilabad, Mohammad E. Yazdanshenas, Ali Etemadifar   +2 more
doaj   +1 more source

Enhanced Photoelectrochemical Water Splitting Using Bismuth/Bismuth Selenide Nanocomposites

Chemistry – An Asian Journal, Volume 20, Issue 6, March 17, 2025.
Bismuth/Bismuth Selenide (Bi/Bi₂Se₃) nanocomposites exhibit enhanced photoelectrochemical (PEC) water splitting performance due to optimized energy band alignment and efficient charge separation. The figure illustrates the impact of synthesis temperature on bandgap tuning, leading to improved photocatalytic activity and hydrogen evolution.
Sumayyah Khan, Manzar Sohail, Geoffrey Will, Anthony O' Mullane, Ahmed Abdala, Md A. Wahab   +5 more
wiley   +1 more source

Pine bio‐oil based biorefinery procedure for the production of antioxidants, acids, and sugars

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract In this study, a wood‐based biorefinery with Pinus halepensis biomass was developed to obtain acids, sugars, and antioxidants with high recovery yields. Pine wood residues from sustainable forest management are transformed into bio‐oil (BO) and separated into value‐added chemicals with an integrated and innovative methodology.
Mireia Mora, Esteve Fàbregas, Francisco Céspedes, Neus Puy   +3 more
wiley   +1 more source

A novel treatment of biogas digestate waste for biochar production and its adsorption of methylene blue and malachite green in a binary system

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract This study presents a novel treatment of biogas digestate to produce biochar at processing temperatures of 500–700 °C. The resulting biochar was applied for the simultaneous removal of methylene blue (MB) and malachite green (MG) in a binary system.
Van Hau Duong, Pham Xuan Phuong, Phan Thi Duy Thuan, Altyn Taisheva, Dinh Van Dung, Le Dinh Phung, Nguyen Thi Hong Bich, Nguyen Duy Luu, Dinh Quang Khieu, Filip Mercl, Hynek Roubík   +10 more
wiley   +1 more source

Studies of hot B subdwarfs. Part 2: Energy distributions of three bright sdB/sdOB stars in the 950-5500 angstrom range [PDF]

Voyager ultraviolet spectrometer observations of the subdwarf B or OB stars HD 205805, UV 1758+36 and Feige 66 are presented. All three objects display the H I Layman series in absorption.
Fontaine, G., Holberg, J. B., Lamontagne, R., Veilleux, S., Wesemael, F.   +4 more
core   +1 more source

INTRINSIC FLUORESCENT COMPOUNDS IN ARMILLARIA MELLEA; HYPHAE AND RHIZOMORPH [PDF]

Journal of Sciences, Islamic Republic of Iran, 1993
The organic solvent extraction of Armillaria mellea showed different highly intrinsic fluorescent compounds either in rhizomorph or in hyphae (F , F , F , MF , MF and MF ).
doaj  

Nanocomposite hybrids of cashew apple bagasse‐derived lignin with photoprotective properties for sunscreen applications

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Prolonged exposure to ultraviolet (UV) radiation can cause significant damage to the skin and immune system. There has consequently been an increasing emphasis on the development of biodegradable and sustainable materials that offer UV protection, reflecting increased awareness of health and disease prevention. Due to its high concentration of
Tigressa Helena Soares Rodrigues, Gabriel Arcanjo Bezerra Matias, Vanessa Moreira Frota, Adriano L. A. Mattos, Maria Valderez Ponte Rocha   +4 more
wiley   +1 more source

Green Propolis Extract‐Mediated Synthesis of Biogenic Silver Nanoparticles: In Vitro Antileishmanial and Antibacterial Activities, Cytotoxicity and Ex Vivo Irritation Testing

Chemistry &Biodiversity, EarlyView.
ABSTRACT This study describes the green synthesis, characterization, and biological evaluation of silver nanoparticles (AgNPs) obtained from green propolis (AgNPs‐PRO). Before nanoparticles synthesis, a hydroethanolic green propolis extract (GPE) was obtained through ultrasound‐assisted extraction and characterized by high‐performance liquid ...
Erica Tirzah S. Lima, Victoria L. S. Santos, Wanessa J. S. Mota, Frederico S. Martins, Ricardo L. C. de Albuquerque‐Junior, André L. S. Santos, Simone S. C. Oliveira, Jéssica A. de Lima, Adriana de Jesus Santos, Cochiran P. dos Santos, Sona Jain, Eliana B. Souto, Juliana C. Cardoso, Patrícia Severino   +13 more
wiley   +1 more source

Formation of fatty acid esterified vitamin D3 in rat skin by exposure to ultraviolet radiation

Journal of Lipid Research, 1983
The formation of fatty acid esters of vitamin D3 was demonstrated in rat skin exposed to artificial ultraviolet rays by using multi-dimensional high-performance liquid chromatography, ultraviolet spectrophotometry, and gas-liquid chromatography-mass ...
K Takada
doaj