Results 121 to 130 of about 148,709 (308)

Study of the Effective Parameters on the Making Use of Protective Devices in Qom Province Workers Community in 2006

open access: yesMajallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Qum, 2008
Background and objective Noise threats health of many groups of industrial workers and causes hearing loss. Use of personal protective device is the best control method to protect against hazardous conditions. Hence, this investigation was carried out to
Y Tabaraie   +3 more
doaj  

Design Strategies and Emerging Applications of High‐Performance Flexible Piezoresistive Pressure Sensors

open access: yesAdvanced Functional Materials, EarlyView.
Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo   +2 more
wiley   +1 more source

Engineering Intelligent Graphene Oxide‐Cellulose Membranes: Suppressing Thermal Runaway for a Safer Aqueous Zinc‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A novel thermos‐responsive hydroxypropyl cellulose/graphene oxide (HPC/GO) composite membrane is fabricated for reversible temperature‐gated ion transport in aqueous zinc‐ion batteries. Enabled by LCST‐driven structural transition, unimpeded ion diffusion at room temperature delivers high capacity, while elevated temperature suppresses transport; full ...
Xueli Bi   +9 more
wiley   +1 more source

A Scandinavian perspective on human factors testing of personal protective devices

open access: yes, 1997
Testing for protection performance and human factors in personal protective devices (PPD) can be undertaken using a standardised methodology. The standardised methodology for performance testing is used for the certification of PPD.
Abeysekera, John D.A.,, Liu, Xiaoxiong
core  

A Comparison of Three Methods for Measuring the Attenuation Provided by Insert-Type Hearing-Protective Devices

open access: yes, 1988
To effectively implement an occupational hearing conservation program, employers must know the amount of attenuation (noise reduction) provided by the hearing protective devices used by their employees.
Gaier, Lois Jeanne
core   +1 more source

Microprocessor Protection Devices: the Present and the Future

open access: yesElectrical Engineering and Power Engineering, 2008
Paper presents the analysis of the basic constructive disadvantages of the present day microprocessor-based protective devices (MBR) and offers the basic principles for creating a new MBR that can be used in newly constructed devices.
openaire   +5 more sources

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi   +3 more
wiley   +1 more source

Silicified Wood‐Inspired, High‐Strength Fire‐Resistant Chitin‐Based Aerogels for Sustainable High‐Temperature Thermal Insulation

open access: yesAdvanced Functional Materials, EarlyView.
Inspired by natural silicified wood, a biomimetic mineralized chitin‐derived aerogel is constructed. It can withstand 81 000 times its own weight, and its backside temperature is 130.4°C after exposure to ∼1300°C butane flame for 600 s, exhibiting high‐strength, fire‐resistance, and super thermal‐insulation properties.
Kai Xu   +11 more
wiley   +1 more source

The Use of Facemasks During the COVID-19 Pandemic by the Brazilian Population

open access: yesJournal of Multidisciplinary Healthcare, 2020
Paula Cotrin,1 Amelia Cristine Bahls,1 Daniella de Oliveira da Silva,2 Valquiria Mendes Pereira Girão,2 Célia Regina Maio Pinzan-Vercelino,2 Ricardo Cesar Gobbi de Oliveira,1 Renata Cristina Oliveira,1 Maria Dalva de Barros Carvalho,3 ...
Cotrin P   +10 more
doaj  

Home - About - Disclaimer - Privacy