Results 71 to 80 of about 15,169 (208)

Ion-Exchange Properties of Modified Silica with Bound Amides of Polyhexamethyleneguanidine and Maleic or o-Phthalic Acids

open access: yesХімія, фізика та технологія поверхні, 2012
Amides of polyhexamethyleneguanidine and maleic or o-phthalic acids were chemically bound with the silica surface. Adsorption properties of synthesized modified silicas have been studied with respect to V(V)-, Cr(VI)-, Mo(VI)-, and W(VI)-containing ...
A. D. Dadashev   +3 more
doaj  

Condensation of anhydrides or dicarboxylic acids with compounds containing active methylene groups. Part 19: Condensation of phthalic and substituted phthalic anhydrides with benzoylacetic ester [PDF]

open access: yes
Phthalylbenzoylacetic ester and its nitro and halogen derivatives were prepared through condensation of phthalic anhydride, nitrophthalic anhydride, and phthalic halide anhydride with benzoylacetic ester in a solution of acetic anhydride and ...
Oshkaya, V. P., Rotberg, Y. T.
core   +1 more source

f‐Block Element‐Based MOF Thin Films: A Platform for Luminescence, Sensing, and Energy Applications

open access: yesSmall, Volume 22, Issue 16, 17 March 2026.
f‐Block element–based metal–organic framework (f‐MOF) thin films offer exceptional potential for luminescent, sensing, and energy‐related applications. This review surveys recent progress in their synthesis, characterization, and functional implementation, emphasizing the diversity of available thin‐film fabrication strategies. The convergence of these
Dong‐Hui Chen, Christof Wöll
wiley   +1 more source

ANTIARRHYTHMIC ACTIVITY MONOGAMISTIC AMIDES AND HYDRAZIDES 1,4-DICARBOXYLIC ACIDS

open access: yesРазработка и регистрация лекарственных средств, 2019
The antiarrhythmic activity of 19 derivatives 1,4-dicarboxylic acids in experiments on white mice on the model of chlorocalcium arrhythmia and acute toxicity of 6 compounds. As a standard, the drug «Lidocaine» was used.
N. V. Kolotova, I. P. Rudakova
doaj  

Background information and biorefinery status, potential and Sustainability: Task 2.1.2 Market and Consumers; Carbohydrates [PDF]

open access: yes
This report was produced to give an overview of present and future market for biorefinery products based on carbohydrates. Various studies show that there is a wealth of possible molecules and products that can be produced from carbohydrates ...
Annevelink, E.   +2 more
core   +1 more source

Polyimide molding powder, coating, adhesive, and matrix resin [PDF]

open access: yes, 1992
The invention is a polyimide prepared from 3,4'-oxydianiline (3,4'-ODA) and 4,4'-oxydiphthalic anhydride (ODPA), in 2-methoxyethyl ether (diglyme). The polymer was prepared in ultra high molecular weight and in a controlled molecular weight form which ...
Progar, Donald J., St.clair, Terry L.
core   +1 more source

Hypervelocity impact survivability experiments for carbonaceous impactors [PDF]

open access: yes
We performed a series of hypervelocity impact experiments using carbon-bearing impactors (diamond, graphite, fullerenes, phthalic acid crystals, and Murchison meteorite) into Al plate at velocities between 4.2 and 6.1 km/s.
Bada, Jeffrey   +6 more
core   +1 more source

A Radiocarbon‐Based Framework to Assess Soil Organic Carbon Persistence and Vulnerability Across Land‐Use Types

open access: yesGlobal Change Biology, Volume 32, Issue 3, March 2026.
Soil organic carbon (SOC) persists over timescales from years to millennia but remains vulnerable to disturbance depending on stabilization mechanisms and environmental constraints. This study assesses SOC persistence and vulnerability across five land‐use types by combining radiocarbon‐derived system age and transit time with indicators of biological ...
Luisa I. Minich   +15 more
wiley   +1 more source

Natural Product-Based Discovery of Antibacterial Agents from Sophora tomentosa L. to Tackle Drug Resistance

open access: yesBiology and Life Sciences Forum
The rapid emergence of antimicrobial resistance (AMR) threatens global health by reducing the effectiveness of current antibiotics. Natural products remain an essential source of structurally diverse compounds with therapeutic potential.
Supattra Poeaim   +3 more
doaj   +1 more source

Mechanical and thermal properties of eco-friendly coating obtained from products of waste polyethylene terephthalate

open access: yesZaštita Materijala, 2018
The technology used in creating coatings is very important for the environmental science field. Regarless to the available types of raw materials, new methods of combining materials or the evolution of traditional technologies, coatings provide a range ...
Mirjana Jovičić   +6 more
doaj   +1 more source

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