Results 131 to 140 of about 89,931 (179)

Uncertainty Quantification for Nonlinear Vibration of Supercritical Drive Shaft With a Dry Friction Damper

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The supercritical drive shaft is becoming increasingly popular in helicopter transmission system. Dry friction dampers are specially employed to ensure the supercritical shafts crossing the critical speed safely. Due to design tolerances, manufacturing errors and time‐varying factors, the parameters of the damper are inherently uncertain ...
Liyao Song   +4 more
wiley   +1 more source

Antimicrobial and Antibiofilm Activity of Origanum vulgare Extracts Obtained by Supercritical Fluid Extraction Under Various Extraction Conditions. [PDF]

open access: yesMolecules
Gwiazdowska D   +11 more
europepmc   +1 more source

Sustainable two‐step functionalization of carbon fibers (CFs) with polyethyleneimine and investigation of curing kinetics in composite materials

open access: yesPolymer Composites, EarlyView.
We followed the functionalization steps outlined in the figure to obtain carbon fibers (CFs) functionalized with branched polyethyleneimine (b‐PEI). The entire process was carried out under mild conditions, including plasma activation and low‐temperature heating, using an eco‐friendly solvent (water).
Edoardo Albertini   +7 more
wiley   +1 more source

A Validated GC‐MS Method for Major Terpenes Quantification in Hydrodistilled Cannabis sativa Essential oil

open access: yesPhytochemical Analysis, EarlyView.
ABSTRACT Introduction Terpenes, which are found in high concentrations in the essential oil fraction of the Cannabis sativa flower, have demonstrated potential in many therapeutic and industrial applications. Objectives This work reports on a method developed for quantifying 18 terpenes in C. sativa essential oil obtained through hydrodistillation. The
Noelle Joy   +2 more
wiley   +1 more source

Synergistic Effects of Carbon Additives and Supercritical CO2 on Cell Morphology and Thermal Insulation of Extruded Polystyrene Composite Foam

open access: yesPolymer Engineering &Science, EarlyView.
This study demonstrates how sc‐CO2‐assisted extrusion foaming of PS with GNP and FG additives enhances thermal insulation performance through controlled dispersion and cell morphology. Improved thermal insulation is achieved by controlling the additive loading and pressure conditions to optimize nucleation and CO2 diffusion.
Apurv Gaidhani   +4 more
wiley   +1 more source

Low Tg PLA‐Based Copolymer Foams for Tissue Engineering Applications: Influence of Supercritical CO2 and N2 Mixtures on Open‐Cell Content, Morphology, and Storage Stability

open access: yesJournal of Polymer Science, EarlyView.
ABSTRACT Polylactid‐based (PLA) copolymer foams show a high potential for tissue engineering applications. However, tailored foam properties are required for these applications. As medical authorization is challenging for foams containing chemical modifiers or nucleating agents, tailored foam properties must be achieved by varying process parameters ...
Annalena Pongratz   +4 more
wiley   +1 more source

The continuing significance of chiral agrochemicals

open access: yesPest Management Science, Volume 81, Issue 4, Page 1697-1716, April 2025.
In the time frame 2018–2023, around 43% of the 35 chiral agrochemicals introduced to the market (herbicides, fungicides, insecticides, acaricides, and nematicides) contain one or more stereogenic centers in the molecule, and almost 69% of them have been marketed as racemic mixtures of enantiomers or stereoisomers.
Peter Jeschke
wiley   +1 more source

Temporal and spatial dynamics of a local wind in Japan, “Kiyokawa‐dashi”: Insights from high‐density observations and numerical simulations

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
We studied a renowned local wind in Japan, “Kiyokawa‐dashi,” with a numerical model and high‐density observations at approximately 1‐km intervals. “Kiyokawa‐dashi” typically begins with intense winds descending onto a confined area leeward of a gorge at the initiation stage and expands over the entire plain at the mature stage.
Hiroyuki Kusaka   +2 more
wiley   +1 more source

Nanoparticle Therapeutics in Clinical Perspective: Classification, Marketed Products, and Regulatory Landscape

open access: yesSmall, EarlyView.
This review presents a detailed overview of clinically approved nanoparticle therapeutics, classifying them by type and discussing their unique advantages in drug delivery. It highlights regulatory challenges across global markets and emphasizes the need for adaptive approval pathways.
Nimeet Desai   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy