Results 41 to 50 of about 15,261 (192)

A New Paradigm for Understanding the Rheology and Processability of Poly(p‐Phenylene Terephthalamide) Liquid‐Crystalline Solutions

open access: yesJournal of Applied Polymer Science, EarlyView.
Kevlar is traditionally modeled as a rigid‐rod polymer, yet rheological behavior deviates from this assumption. The review introduces a novel “twist‐tie” entanglement theory for aramid polymer chains in the nematic liquid crystal state, providing a molecular explanation for deviations from rigid‐rod models. Understanding twist‐tie entanglement dynamics
Emma Egli   +3 more
wiley   +1 more source

Aerodynamics Analysis of Speed Skating Helmets: Investigation by CFD Simulations

open access: yesApplied Sciences, 2021
In this work, we investigate the flow field around speed skating helmets and their associated aerodynamic drag by means of computational fluid dynamics (CFD) simulations. An existing helmet frequently used in competition was taken as a baseline.
Guillermo Puelles Magán   +2 more
doaj   +1 more source

A Prospection‐Led Archaeological Investigation of a Picenian and Roman Necropolis in Corinaldo (Marche, Italy)

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT This paper presents the results of an integrated archaeological and geophysical investigation conducted between 2018 and 2024 at the newly discovered Picenian and Roman necropolis of Contrada Nevola (Corinaldo, Marche, Central Italy), identified in the framework of development‐led archaeology. The research strategy combined aerial photography,
Federica Boschi
wiley   +1 more source

Disparity in motorcycle helmet use in Thailand [PDF]

open access: yesInternational Journal for Equity in Health, 2013
قد يكون تشتت الإصابات والوفيات المتعلقة بالدراجات النارية نتيجة للتفاوت في استخدام خوذة الدراجات النارية. تستخدم هذه الدراسة بيانات المسح الوطني على جانب الطريق، وبيانات مراقبة الإصابات وغيرها من مجموعات البيانات الوطنية في عام 2010 في تايلاند، وهي بلد يعاني من ارتفاع معدل الوفيات المتعلقة بإصابات الدراجات النارية، لاستكشاف التفاوت في استخدام الخوذات ...
Paibul Suriyawongpaisa   +4 more
openaire   +2 more sources

The Degradation of Access‐Based Business Models: Customer Misbehavior and Shared Mobility

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Access‐based services are considered one of the strategies to embed sustainability in business models. Yet, because the evolution of these business models has been overlooked, we do not know whether their promise to create triple value is sustained.
Andres Camacho, Carmen Valor
wiley   +1 more source

Prevalence and evolution of helmet use in motorcycle riders in an Argentine city (Mar del Plata, 2006-2014)

open access: yesSalud Colectiva, 2016
Traffic collisions involving motorcyclists are a growing problem in low and middle income countries. Helmet use is the foremost protective measure for this group of road users, however many riders do not wear them.
Jeremías David Tosi   +4 more
doaj   +1 more source

Patient-specific 3D-printed helmet for post-craniectomy defect – a case report

open access: yes3D Printing in Medicine, 2022
Background Patients who undergo decompressive craniectomy (DC) are often fitted with a helmet that protects the craniectomy site from injury during rehabilitation.
Sherby Suet-Ying Pang   +5 more
doaj   +1 more source

Characteristics of Sensitive Scalp in French Women and Comparison With Scalp Dermatoses

open access: yesJEADV Clinical Practice, EarlyView.
ABSTRACT Background A sensitive scalp is a particular location of sensitive skin, characterised by the occurrence of unpleasant sensations which cannot be explained by a skin disease. It is a common syndrome that could affect 30%–50% of women. Clinical data are scarce, and the impact on the quality of life poorly described.
Ficheux Anne‐Sophie   +3 more
wiley   +1 more source

HELMET USE COMPLIANCE SURVEY FOR CRANIOFACIAL TRAUMA PREVENTION AMONG MOTORCYCLISTS IN JAYAPURA CITY RING ROAD

open access: yesJurnal Rekonstruksi dan Estetik
Highlights: • This study provides insights on helmet compliance among motorcyclists in Jayapura City to help prevent head injuries. • The analysis shows non-compliance with helmets, especially on the Jayapura Ring Road, where up to four people ride a ...
Hendrikus Masang Ban Bolly   +1 more
doaj   +1 more source

Application of Machine Learning Algorithm on MEMS-Based Sensors for Determination of Helmet Wearing for Workplace Safety

open access: yesMicromachines, 2021
Appropriate use of helmets as industrial personal protective gear is a long-standing challenge. The dilemma for any user wearing a helmet is thermal discomfort versus the chances of head injuries while not wearing it.
Yan Hao Tan   +2 more
doaj   +1 more source

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