Results 121 to 130 of about 119,769 (367)

Bending Fatigue Tests on Helicopter Nitrided Gears: Influence of Different Materials and Manufacturing Parameters

open access: yes, 2010
In helicopter transmissions, nitrided gears represent an alternative to case carburized gears, when treatment distortion become a problem, due to large size and high flexibility, and are for this reason used in AgustaWestland gearboxes.
A. Cerrini   +6 more
core  

The rain feels different under the same umbrella: Experiences with poverty across LGBTQ subgroups

open access: yesAmerican Journal of Community Psychology, EarlyView.
Abstract Population‐based survey data have demonstrated that LGBTQ communities report varying rates of economic insecurity, yet very little research directly assesses how pathways into and experiences with poverty look different among subgroups at the intersections of sexual orientation and gender identity (SOGI).
Bianca D. M. Wilson, Lillian Nguyen
wiley   +1 more source

Study on the Potential of New Load-Carrying Capacity Descriptions for the Service Life Calculations of Gears

open access: yesMachines
Calculating the service life of gears under variable loads requires a description of the load-carrying capacity. The current standard for this is the use of the S/N curve.
Daniel Vietze   +2 more
doaj   +1 more source

Advanced theories of hypoid gears /

open access: yes
In order to develop more efficient types of gears, further investigation into the theories of engagement is necessary. Up until now most of the research work on the theories of engagement has been carried out separately on different groups, and based on ...
Wang, X. C., Ghosh, S. K.(Swadhin Kuman)
core  

Per‐ and Polyfluoroalkyl Substances (PFAS) Exposure Profiles and Their Predictors in a Study of US Volunteer Firefighters

open access: yesAmerican Journal of Industrial Medicine, EarlyView.
ABSTRACT Introduction Firefighters may experience occupational exposure to per‐ and polyfluoroalkyl substances (PFAS). Volunteer firefighters make up 65% of the US fire service, but their serum PFAS profiles have not been well characterized. This study aims to (1) describe PFAS serum profiles among US volunteer firefighters from 9 states enrolled in ...
Katherine A. Lubina   +16 more
wiley   +1 more source

Numerical Models for Induction Hardening of Gears [PDF]

open access: yes, 2012
I modelli numerici permettono ai progettisti di evitare un approccio trial and error, lungo e costoso, nello stabilire i parametri di tempra. Questa Tesi pertanto affronta uno studio sull’influenza dei parametri di macchina sullo strato temprato di una ...
Mingardi, Damiano
core  

Australia's Migration Strategy: An Effective Response to Migrant Worker Exploitation?

open access: yesAustralian Journal of Social Issues, EarlyView.
ABSTRACT A series of publicised migrant worker injuries and deaths has drawn attention to the issue of migrant worker exploitation (MWE) in Australia. In response, the Australian Government has included ‘Tackling Worker Exploitation’ as a key area of its Migration Strategy which it introduced in 2023. However, it is unclear how effective the Strategy’s
Evelyn Dowling, Alexandra Ridgway
wiley   +1 more source

T. rex cognition was T. rex‐like—A critical outlook on diverging views of the neurocognitive evolution in dinosaurs

open access: yesThe Anatomical Record, EarlyView.
Abstract A recent debate has emerged between Caspar et al. (2024) and Herculano‐Houzel (2023) on inferring extinct dinosaur cognition by estimating brain neuron counts. While thought‐provoking, the discussion largely overlooks the function of cognition, as well as partly neglects the difficulties involved in estimating neuron numbers, which according ...
Thomas Rejsenhus Jensen   +7 more
wiley   +1 more source

A pipeline crisis or a sustainability crisis? Local and national succession planning for headteachers in England

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Recruiting and retaining school leaders is a challenge in many systems worldwide. Previous research has identified three distinct ways in which succession planning can be conceptualised and approached: a ‘pipeline’ approach seeks to match supply and demand for the posts that need filling; a ‘pool’ strategy involves proactively identifying and ...
Toby Greany   +3 more
wiley   +1 more source

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