Results 171 to 180 of about 34,568 (304)

Interventions and Perinatal Outcomes Associated With Recipient Twin Cardiomyopathy in the Setting of Twin‐To‐Twin Transfusion Syndrome: A Systematic Review

open access: yesPrenatal Diagnosis, EarlyView.
ABSTRACT Objective To determine (1) Whether the presence and severity of recipient twin cardiomyopathy in the setting of twin‐to‐twin transfusion syndrome are associated with worse perinatal outcomes when compared to recipient twins without evidence of cardiomyopathy and (2) The optimal management strategy to reduce the likelihood of adverse perinatal ...
Briana Tolbert   +7 more
wiley   +1 more source

Mechanically robust biochar‐modified polystyrene foam with enhanced flame retardancy using halogen‐free additives

open access: yesPolymer International, EarlyView.
Halogen‐free biocomposite polystyrene foams were fabricated via pilot‐scale supercritical CO2 extrusion using expandable graphite, melamine polyphosphate, biochar, and recycled polymer. The optimized formulation exhibited refined cellular morphology, enhanced flame retardancy (limiting oxygen index of 25%, rapid self‐extinguishing), and improved ...
Apurv Gaidhani   +4 more
wiley   +1 more source

Ground Improvement by Optimized Preload Program

open access: yes, 2004
Preloading of sites underlain by compressible soils is a well-established site development procedure to reduce post-construction settlements of structures supported on shallow foundations.
Kristiansen, Henrik, Martin, Todd
core  

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang   +3 more
wiley   +1 more source

Key Technical Fields and Future Outlooks of Space Manipulators: A Survey

open access: yesSmartBot, EarlyView.
This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen   +12 more
wiley   +1 more source

Machine Learning‐Driven Capillary Microfluidic Design Automation for Programmable Gradient Generation and Antimicrobial Testing

open access: yesSmall, EarlyView.
TCG‐CMDA, a machine learning‐guided capillary microfluidic design automation platform, enables automated design of tree‐shaped concentration gradient generators for programmable mixing of two agents. The pump‐free chip supports synchronized passive flow and programmable gradient formation, providing a practical framework for decentralized point‐of‐care
Mahmood Khalghollah   +4 more
wiley   +1 more source

Behavior of manufactured sand and recycled coarse aggregate concrete‐filled steel tubular stub columns with circular section

open access: yesStructural Concrete, EarlyView.
Abstract Accelerated urbanization has intensified environmental concerns due to excessive natural resource consumption and construction waste generation. Circular concrete‐filled steel tube (CFST) columns incorporating manufactured sand recycled coarse aggregate (MS‐RCA) concrete have emerged as an innovative composite element offering notable ...
Minsheng Guan   +7 more
wiley   +1 more source

Gearbox Noise and Vibration : Influence of Bearing Preload

open access: yes, 2008
The influence of bearing preload or endplay on gearbox noise and vibrations was investigated using a test gearbox consisting of a helical gear pair, shafts, tapered roller bearings, and housing.
Åkerblom, Mats, Sellgren, Ulf
core  

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