Results 121 to 130 of about 532 (208)

Analysis of Mechanical‐Electrical‐Hydraulic Coupled Vibration Response Characteristics of Thermal Control Circulating Pumps Supported by Water‐Lubricated Bearings

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The operational reliability of thermal control circulation pumps is significantly restricted by the multi‐physics coupled environment. To reveal the vibration transmission mechanisms and dynamic response characteristics under multi‐field coupled excitations, a multi‐DOF coupled dynamic representation of the overall system, incorporating the ...
Jianfeng Luo   +4 more
wiley   +1 more source

Improving enteral nutrition in patients requiring neurological intensive care unit care: A retrospective study on a novel bedside nasointestinal tube placement technique

open access: yesNutrition in Clinical Practice, EarlyView.
Abstract Background This study aimed to develop and assess a bedside nasojejunal tube placement technique designed for resource‐limited settings to address the specific challenges of enteral nutrition (EN) delivery in neurocritical care patients, particularly those at high risk of reflux and aspiration. The technique sought to overcome the drawbacks of
Niuchenglin   +5 more
wiley   +1 more source

Mechanical Performance Retention of CNT‐Modified Sisal Biocomposites Under Hygrothermal‐Saline Aging

open access: yesPolymer Composites, EarlyView.
Mechanical Performance Retention of CNT‐Modified Sisal Biocomposites Under Hygrothermal‐Saline Aging. ABSTRACT This study investigates the influence of carbon nanotubes (CNTs) on the moisture absorption kinetics and mechanical degradation of discontinuous random fiber (DRF) biocomposites under accelerated hygrothermal–saline (HTS) aging.
Guglielmo Marchesa   +3 more
wiley   +1 more source

Tribological Behavior of Additively Manufactured Dual‐Material Polymer Composites

open access: yesPolymer Composites, EarlyView.
Layered architecture, tribological performance, and wear mechanisms of additively manufactured dual‐material hybrid polymer composites. ABSTRACT This study presents a novel material design approach for wear‐resistant sandwich‐structured hybrid composites fabricated using dual‐nozzle fused deposition modeling (FDM). By co‐printing commercially available
Zhiwang Li   +3 more
wiley   +1 more source

Reinforcement of Polyvinyl Chloride Using Plasma‐Activated Aramid Fibers and Surface‐Bonded Compatibilizer

open access: yesPolymer Composites, EarlyView.
Two‐step compatibiization of aramid fibers with PVC via Plasma Activation and surface reaction. ABSTRACT This study investigated the application of a two‐step compatibilization procedure to aramid fiber–polyvinyl chloride (PVC) composites. Aramid fibers were subjected to high radio frequency power air plasma treatment and incorporated into the PVC ...
Adekunle Lawrence Omoniyi   +3 more
wiley   +1 more source

Improvement of Mechanical Properties of PCL Nanofibers Through Thermo‐Compression Process

open access: yesPolymer Engineering &Science, EarlyView.
Thermo‐compression enhances interfiber connectivity and mechanical properties of electrospun PCL nanofibers by controlling temperature, pressure, and duration, with the resulting behavior interpreted using the Deborah number. ABSTRACT Recently, polymeric nanofibers have been widely used in various fields, including electronics and optics, filtration ...
Min Jae Seo   +2 more
wiley   +1 more source

Migration of Erucamide in Polyethylene Film

open access: yesPolymer Engineering &Science, EarlyView.
Erucamide migration in polyethylene films as a function of time and temperature, evaluated by FTIR‐PAS and correlated with changes in surface morphology and contact angle. ABSTRACT Erucamide is a migratory slip agent widely used in polyethylene (PE) films for flexible packaging applications, particularly those processed on high‐speed filling and ...
Kelly Cristina Maziero   +7 more
wiley   +1 more source

Air-Lubricated Bearings with Capillary Air-Feeder Holes

open access: yesAir-Lubricated Bearings with Capillary Air-Feeder Holes
Capillary air-feeder holes of which each one is considered to possess the ability of two restrictions in series have been applied to air-lubricated bearings at high speed. It has been concluded by the experiment that the air-lubricated bearing, having capillary air-feeder holes located in diametral symetry, can be operated in quite a stable state and ...
openaire   +1 more source

Characteristics, properties and limitations of per‐ or polyfluoroalkyl substances (PFASs) and fluoropolymers

open access: yesPolymer International, EarlyView.
An overview and categorization of man‐made per‐ or polyfluoroalkyl substances (PFASs) including low‐molar‐mass and high‐molar‐mass fluorochemicals, and their international regulations is presented. Though certain PFASs are toxic, bioaccumulative and cross the human cellular membranes, others, such as fluoropolymers, are safe, reliable and involved in ...
Bruno Améduri
wiley   +1 more source

Biosurfactant production by Pseudomonas aeruginosa isolated from mining waste: From genomic analysis to development of a polymeric composite for removal of hexavalent chromium

open access: yesPolymer International, EarlyView.
Biosurfactant was produced by Pseudomonas aeruginosa using andiroba waste from Amazonia. A biosurfactant–alginate composite (Alg/BioS) was successfully synthesized via ionotropic gelation, and achieved up to 70% Cr6+ removal from water. Abstract Environmental contamination by heavy metals represents a significant challenge due to their persistence in ...
Paulo Diniz Austriaco   +11 more
wiley   +1 more source

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