Results 21 to 30 of about 10,269 (246)

Where feminists dare

open access: yesOñati Socio-Legal Series, 2023
This paper focuses on the public debate in Poland and Italy concerning the right to abortion in the contemporary rise of populist neo-conservative forces in Europe and of a global feminist movement.
Agnieszka Bielska-Brodziak   +3 more
doaj   +1 more source

Human Pegivirus Encephalitis With Brain Detection and Response to Sofosbuvir Ledipasvir

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Human pegivirus (HPgV‐1) has been associated with severe encephalomyelitis in immunocompromised patients. Its neurological spectrum remains poorly defined. We report a slowly progressive encephalitis in a person living with well‐controlled HIV, characterized by white matter abnormalities and inflammatory cerebrospinal fluid (CSF). HPgV RNA was
Antoine Moulignier   +3 more
wiley   +1 more source

New Measure and Calculation Method for Gear Pair Normal Backlash

open access: yesJixie chuandong, 2020
Calculated the gear pair normal backlash constant c according to definition and calculation method of gear pair normal backlash from GB/Z 18620.2—2008 at a given work center distance.
Song Shusen   +5 more
doaj  

Piecewise Nonlinear Dynamic Modeling for Gear Transmissions With Rotary Inertia and Backlash

open access: yesIEEE Access, 2019
Establishing an accurate dynamic model for gear transmission is challenging because of the complex dynamic mechanical behavior of the gear transmission, particularly under difficult working conditions such as heavy loads and frequent starts and stops ...
Zhen Xu, Hua Deng, Yi Zhang
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

open access: yesAdvanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi   +3 more
wiley   +1 more source

A Gear Backlash Identification and Compensation Method to Enhance Industrial Robot Repeatability

open access: yesIEEE Access
Industrial robots are extensively utilized in machinery manufacturing owing to their multiple degrees of freedom (DoF) and inherent flexibility. However, backlash not only impairs the bidirectional repeatability and multi-directional repeatability of the
Jinxiang Yao   +8 more
doaj   +1 more source

A comparative investigation of meshing characteristics of anti-backlash single-and double-roller enveloping hourglass worm gears

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2019
The new precision transmission system-Anti-backlash roller enveloping hourglass worm gears are now widely employed in many industrial sectors such as robot joint design, packaging production line, and CNC (computer numerical control) machine tools ...
Huan ZHANG   +4 more
doaj   +1 more source

Adaptive Multi-Parameter Estimation of Inertial Stabilization Platform with Unknown Load

open access: yesActuators, 2023
In order to improve the state monitoring and adaptive control capability of inertial stabilization platforms (ISPs) with unknown loads, it is necessary to estimate the dynamic parameters comprehensively online.
Jieji Zheng   +5 more
doaj   +1 more source

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

open access: yesAdvanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali   +5 more
wiley   +1 more source

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