Results 91 to 100 of about 207,327 (249)
The Chemical Record, EarlyView.Two decades of synthetic strategies for sulfur‐, selenium‐decorated coumarins are critically surveyed through 44 literature reports, with particular emphasis on derivatives functionalized at the C‐3 and C‐4 positions. This review reports the direct construction of the coumarin framework through cyclization processes and late‐stage functionalization of ...
Bruna R. Schneider +6 more
wiley +1 more source
Beilstein Journal of Organic Chemistry, 2018 Multistep syntheses of novel 17β-pyrazol-5'-ones in the Δ5-androstane series were efficiently carried out from pregnenolone acetate. A steroidal 17-carboxylic acid was first synthesized as a norpregnene precursor by the bromoform reaction and subsequent ...
Gergő Mótyán +6 more
doaj +1 more source
Environmental Toxicology, EarlyView.ABSTRACT Urban coastal lagoons are highly vulnerable ecosystems increasingly affected by metal contamination, as well as multiple anthropogenic stressors. This study evaluated ecotoxicological and human health risks associated with chronic metal exposure in Nile tilapia (Oreochromis niloticus) from an anthropogenically impacted lagoon in southeastern ...
Julia Araújo Alves +8 more
wiley +1 more source
A Method of 1D UVC Radiation Dose Measurement using a Novel Tablet Dosimeter
AUTEX Research Journal, 2020 In this work, a method for the measurement of one-dimensional (1D) UV radiation dose is described. It comprises a new tablet dosimeter that measures the dose using reflectance spectrophotometry. The tablet dosimeter elaborated is a solid structure with a
Sąsiadek Elżbieta, Kozicki Marek
doaj +1 more source
THE VALUE OF SOME TETRAZOLIUM SALTS AS HISTOCHEMICAL REAGENTS FOR SULPHYDRYL GROUPS
, 1955 A study was made of the reaction between sulphydryl compounds and tetrazolium salts, to estimate the value of the latter in the histochemistry of sulphydryl groups. The chemical reaction was found to be precarious, the relative concentrations of the two
G. H. FINDLAY
core +1 more source
Effect of Propylparaben on In Vitro Maturation of Porcine Oocytes and Embryo Development
Environmental Toxicology, EarlyView.ABSTRACT Parabens are synthetic chemicals that, due to their antibacterial and fungicidal effects, are widely used as preservatives in food, cosmetics, and personal care products, such as shampoos, hair conditioners, body creams, soaps, deodorants, makeup, wet wipes, lotions, female hygiene products, and vaginal lubricants. Several years ago, they were
Elivier Núñez‐Macías +10 more
wiley +1 more source
FURTHER OBSERVATIONS ON THE ENZYMATIC REDUCTION OF TETRAZOLIUM SALTS BY MONOAMINES
, 1958 Studies on the role of purines as cofactors in the enzymatic reduction of tetrazolium salts by monoamines have led to the following results: (1) With whole rat liver extracts as the source of enzymes, several purines exhibit cofactor activity either as ...
J. R. Lagnado, T. L. Sourkes
core +1 more source
DrugFacts: Synthetic cathinones (“Bath salts”). [PDF]
, 2023 Synthetic cathinones, more commonly known as bath salts, are human-made stimulants chemically related to cathinone, a substance found in the khat plant. Khat is a shrub grown in East Africa and southern Arabia, where some people chew its leaves for their
core
Biopolymer‐Based Polyelectrolyte Nanoplatforms for Targeted Photodynamic Therapy of Breast Cancer
VIEW, EarlyView.Illustration of the synthesis of 5‐aminolevulinic acid loaded chitosan‐sericin polyelectrolyte nanoparticles (CSSN/ALA NPs) using the Flash nanocomplexation (FNC) technique and their potential in photodynamic therapy (PDT) against breast cancer (BC). Abstract Nanomedicine has reshaped healthcare, especially in targeted drug delivery systems (DDSs) and ...
Athira Narayanan +14 more
wiley +1 more source
, 1978 The formation of complexes between mucopolysaccharides and tetrazolium salts has been studied both by turbidimetry and nephelometry. The technique of laser nephelometry allows the detection of colloidal aggregates in systems which may, by turbidimetric ...
M A Needle, V A DeBari
core +1 more source