Results 121 to 130 of about 51,626 (253)

Polyaryl ethers and related polysiloxane copolymer molecular coatings preparation and radiation degrdation [PDF]

Poly(arylene ether sulfones) comprise a class of materials known as engineering thermoplastics which have a variety of important applications. These polymers are tough, rigid materials with good mechanical properties over a wide temperature range, and ...
Hedrick, J. L., Johnson, B. C., Mcgrath, J. E., Mohanty, D. K., Webster, D. C., Yilgor, I.   +5 more
core   +1 more source

An Archaeometric Approach to Reveal Organic Compounds via GC‐MS Analyses of Two Discovered Incense Burners at Daba Al‐Bayah

Archaeometry, EarlyView.
ABSTRACT This study focuses on two terracotta incense burners discovered in the Daba Al‐Bayah necropolis in the Musandam Peninsula (Oman), associated with an Iron Age collective tomb (LCG‐2). Through gas chromatography–mass spectrometry (GC‐MS), the organic residues preserved within these artifacts were analyzed to investigate their use and ...
Francesco Genchi, Federica Spagnoli, Vittorio Vinciguerra, Stefania Garzoli   +3 more
wiley   +1 more source

Hydroquinone [PDF]

Reactions Weekly, 2020
openaire   +2 more sources

KINETICS AND MECHANISM OF AERIAL OXIDATION OF HYDROQUINONE IN A DEVELOPER SOLUTION AND DETERMINATION OF DEVELOPER'S HALF-LIFE AT 20°C [PDF]

Journal of Sciences, Islamic Republic of Iran, 1995
The aerial oxidation of hydroquinone in a freshly prepared developer solution at 20°C has been studied through the measurement of concentration changes by a spectrophotometric method. The concentration of consumed hydroquinone is directly proportional to
doaj  

Novel Histopathologic Features of Diffuse Blue‐Gray Hyperpigmentation Associated With Kratom Use: A Case Report and Literature Review

Journal of Cutaneous Pathology, EarlyView.
ABSTRACT Background Drug‐induced hyperpigmentation accounts for 10%–20% of acquired pigmentary disorders and can be misdiagnosed for other causes such as melasma, post inflammatory changes, or heavy metal deposition. Kratom (Mitragyna speciosa), a Southeast Asian plant with an opioid‐like profile, has been increasingly used in the United States for ...
Rita Kamoua, Kristen Paradine, Craig A. Rohan, Mary McDaniel, Diane Perkins   +4 more
wiley   +1 more source

Simultaneous Ejection of Six Electrons at a Constant Potential by Hexakis(4-ferrocenylphenyl)benzene [PDF]

, 2006
A simple synthesis of a dendritic hexaferrocenyl electron donor (5) is described in which six ferrocene moieties are connected at the vertices of the propeller of the hexaphenylbenzene core.
Chebny, Vincent J., Dhar, Dwairath, Lindeman, Sergey V., Rathore, Rajendra   +3 more
core   +1 more source

Tyrosine residues at the substrate binding site in human NQO1 homodimer: Protein conformational dynamics and optimization of substrate binding geometry

The FEBS Journal, EarlyView.
Human NAD(P)H:quinone oxidoreductase 1 is a homodimeric flavoenzyme crucial for redox metabolism and linked to significant health issues. Point mutations at Tyr126 and Tyr128 demonstrate their essential roles in optimizing substrate binding geometry for catalysis, as well as in half‐site reactivity and conformational dynamics during the enzyme's ...
Maribel Rivero, Juan Luis Pacheco‐Garcia, Pavla Vankova, Dmitry Loginov, Isabel Quereda‐Moraleda, Jose Manuel Martin‐Garcia, Petr Man, Angel Luis Pey, Milagros Medina   +8 more
wiley   +1 more source

Differentiating solar lentigines from post‐inflammatory hyperpigmentation with hyperspectral imaging: A pilot study

International Journal of Cosmetic Science, EarlyView.
This preliminary study attempted to characterize solar lentigines and post‐inflammatory hyperpigmentation (PIH) observed on Japanese women. Colorimetric features and chromophore concentrations were measured using hyperspectral imaging for each hyperpigmentation type.
Victor Egana, Carl Blaksley, Ayako Itaya, Mai Edagawa, Alexandre Nicolas   +4 more
wiley   +1 more source

Analysis of Hydroquinone in Face Whitening Cream by UV-Vis Spectrophotometry and GC-MS Spectrometry

Indonesian Journal of Chemical Research
The analytical method to determine the compound content in both food and cosmetic products must be carried out carefully to ensure the validity of the analysis results.
Karnelasatri Karnelasatri, Candra Yulius Tahya, Mahda Uli Adila, Junius Hardy, Sri Wahyu Ningsih Munthe   +4 more
doaj  

Monitoring of Metabolic Disorders Through Electro‐Sensing of Riboflavin by Novel Super‐Conductive Silver Ink Modified Paper

Analytical Science Advances, Volume 7, Issue 1, June 2026.
ABSTRACT Riboflavin (RIB), or vitamin B2, plays a key role in cellular protection against oxidative stress, and its deficiency can cause severe physiological complications, including metabolic disorders, photosensitivity, anaemia, growth delay and gastrointestinal problems.
Rokhsareh Ebrahimi, Mohammad Hasanzadeh, Nasrin Shadjou   +2 more
wiley   +1 more source