Results 71 to 80 of about 25,950 (266)

Influence of Phthalic Acid on the Process of Dendrite Development in Low-Density Polyethylene During Electrical Breakdown

open access: yesEast European Journal of Physics
The presented work presents the results of a study on the effect of small amounts of phthalic acid additives on dendrite formation in low-density polyethene (LDPE).
Sh.A. Zeynalov   +5 more
doaj   +1 more source

Practical Applications of Secondary/Extractive Electrospray Ionization (SESI): A Versatile Tool for Real‐Time Chemical Analysis

open access: yesMass Spectrometry Reviews, Volume 45, Issue 2, Page 392-428, March/April 2026.
ABSTRACT In the 1980s, researchers discovered the remarkable ability of electrospray plumes to effectively ionize gas‐phase molecules via secondary ionization. Around 20 years later—coinciding with the ambient mass spectrometry revolution—secondary electrospray ionization (SESI) and extractive electrospray ionization (EESI) coupled to mass spectrometry
Xin Luo   +5 more
wiley   +1 more source

Cure Kinetics and Chemorheological Modeling of a Transesterification‐Based Epoxy/Anhydride Vitrimer

open access: yesJournal of Applied Polymer Science, Volume 143, Issue 7, February 15, 2026.
Cure kinetics and chemorheological model predictions of experimental reaction rate and chemoviscosity evolutions. ABSTRACT This study presents the cure kinetics, glass transition temperature (T g ) and chemoviscosity models for an epoxy vitrimer synthesized from DGEBA, methylhexahydrophthalic anhydride (MHHPA), and triethanolamine (TEOA).
Romeo E. Ekperi   +2 more
wiley   +1 more source

Progress and Prospects of Persistent Luminescent Nanocrystals in Biomedical Applications

open access: yesAdvanced Optical Materials, Volume 14, Issue 6, 9 February 2026.
This review summarizes recent progress in materials‐level control of persistent luminescence, including mechanistic understanding, wavelength/intensity tuning, and activation strategies, as well as emerging biomedical applications in imaging, biosensing, cell tracking, optogenetic stimulation, and biophotochemical activation.
Peng Pei   +5 more
wiley   +1 more source

Effect of MEHP on testosterone synthesis via Sirt1/Foxo1/Rab7 signaling pathway inhibition of lipophagy in TM3 cells

open access: yesEcotoxicology and Environmental Safety
Mono-2-ethylhexyl phthalic acid (MEHP) is the most toxic metabolite of the plasticizer di-2-ethylhexyl phthalic acid (DEHP), and studies have shown that MEHP causes serious reproductive effects. However, its exact mechanisms of action remain elusive.
Yu Hao   +5 more
doaj   +1 more source

Isolation of chemical constituents from Nonomuraea species: In vitro and in silico evaluation of its antibacterial properties

open access: yesBeni-Suef University Journal of Basic and Applied Sciences, 2017
An actinomycetes strain VAS16 was isolated from the soil collected from the agricultural field of Vengodu. The strain was identified as Nonomuraea species based on morphological, physiological and biochemical characteristics along with 16S rRNA gene ...
P. Saravana Kumar   +7 more
doaj   +1 more source

Imide oligomers endcapped with phenylethynyl phthalic anhydrides and polymers therefrom [PDF]

open access: yes, 1996
Controlled molecular weight phenylethynyl terminated imide oligomers (PETIs) have been prepared by the cyclodehydration of precursor phenylethynyl terminated amic acid oligomers.
Hergenrother, Paul M.   +1 more
core   +1 more source

Esterification of dicarboxylic acids to diesters over Mn+-montmoril lonite clay catalysts [PDF]

open access: yes, 2005
Esterification of dicarboxylic acids with various alcohols and phenols in presence of metal exchanged montmorillonite clay catalyst (Mn+-mont; Mnþ ¼ Al3þ, Fe3+, Cr3+, Zn2+, Mn2+, and Ni2+) is studied.
Gopalpur Nagendrappa, .   +3 more
core   +1 more source

Tandem Takeoff: Powering Tomorrow with Industrial‐Grade Perovskite/Silicon Solar Cells

open access: yesAdvanced Energy Materials, Volume 16, Issue 5, 4 February 2026.
Perovskite/silicon tandem solar cells have recently achieved certified power conversion efficiencies of 34.85%, far exceeding the Shockley‐Queisser limit for single‐junction silicon and standalone perovskite cells. This review highlights the latest advances in the design, integration, and optimization of perovskite top cells for monolithic tandem ...
Maria Vasilopoulou   +19 more
wiley   +1 more source

Effects of Exogenous Organic Acids on the Soil Metabolites and Microbial Communities of Panax notoginseng from the Forest Understory

open access: yesAgronomy
Panax notoginseng (Sanqi) is a precious traditional Chinese medicine that is commonly cultivated using conventional management methods in agricultural systems in Yunnan, China, where it faces the challenge of continuous cropping obstacles (CCOs). However,
Jingying Hei   +4 more
doaj   +1 more source

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