Results 31 to 40 of about 3,245 (229)

Development of a Grasshopper‐Leg‐Inspired Back‐Type Exoskeleton for the Reduction of Muscle Activation During Stoop Activities

open access: yesJournal of Field Robotics, Volume 43, Issue 2, Page 739-760, March 2026.
ABSTRACT Farmers frequently suffer from musculoskeletal disorders, particularly lower back pain (LBP), mainly due to occupational ergonomic factors such as repetitive stooping and lifting. This study proposes using an exoskeleton to reduce LBP risk by providing external torque to the hip joints.
Dang Khanh Linh Le, Wei Chih Lin
wiley   +1 more source

Toggle mechanism for pinching metal tubes [PDF]

open access: yes, 1979
A toggle mechanism pinches a metal tube and maintains the tube in a pinched condition, without fracturing. The toggle mechanism includes a plunger translatable along a longitudinal axis, as well as a pair of links pivoted about a common axis extending ...
Stengard, E. O.
core   +1 more source

A Pull‐Out Mooring Wave Energy Converter: Design, Analysis, and Application

open access: yesAdvanced Science, Volume 13, Issue 4, 19 January 2026.
A pull‐out mooring wave energy converter (POM‐WEC) with a high‐performance electromagnetic power take‐off system efficiently converts low‐frequency wave excitation into high‐speed rotor motion, enabling reliable energy harvesting in real marine environments.
Weihan Xu   +4 more
wiley   +1 more source

Electromagnetic Characteristics of Permanent Magnet Linear Generator (PMLG) Applied to Free-Piston Engine (FPE)

open access: yesIEEE Access, 2019
The electromagnetic characteristics of the permanent magnet linear generator (PMLG), which is the key components of the free-piston engine (FPE), are studied in this paper.
Yongming Xu   +3 more
doaj   +1 more source

Aircraft canopy lock [PDF]

open access: yes, 1981
A manually-operable lock for releasably securing a canopy in closed condition is ...
Nichols, G. H.
core   +1 more source

Design of Multi‐Cell FDM Build Bed Systems for Optimal Material Usage in Additive Manufacturing Process

open access: yesMaterial Design &Processing Communication, Volume 2026, Issue 1, 2026.
Support structures are essential in additive manufacturing (AM) processes such as material extrusion, particularly for fabricating parts with overhanging features. However, conventional supports are typically removed after printing and cannot be reused, resulting in significant material waste and increased printing time.
Addisu Workiye   +2 more
wiley   +1 more source

Design and Experiment Analysis of a Direct-Drive Wave Energy Converter with a Linear Generator

open access: yesEnergies, 2018
Coastal waves are an abundant nonpolluting and renewable energy source. A wave energy converter (WEC) must be designed for efficient and steady operation in highly energetic ocean environments. A direct-drive wave energy conversion (D-DWEC) system with a
Jing Zhang, Haitao Yu, Zhenchuan Shi
doaj   +1 more source

Mechanized fluid connector and assembly tool system with ball detents [PDF]

open access: yes, 1991
A fluid connector system is disclosed which includes a modified plumbing union having a rotatable member for drawing said union into a fluid tight condition.
Smith, Steven A., Zentner, Ronald C.
core   +1 more source

Amyloid Forming Human Lysozyme Intermediates are Stabilized by Non‐Native Amide‐π Interactions

open access: yesAdvanced Science, Volume 12, Issue 34, September 11, 2025.
Mutational variants of human lysozyme cause fatal systemic amyloidosis by depositing kilograms of protein in the viscera of patients. Central to this process is a partially unfolded protein intermediate state that initiates aggregation into amyloid fibrils.
Minkoo Ahn   +6 more
wiley   +1 more source

Design and analysis of concave‐core stator direct‐drive permanent magnet motor

open access: yesIET Electric Power Applications, 2023
To solve the problems mechanically caused by parallel direct‐drive permanent magnet motors (DD‐PMSM). This paper proposes a concave‐core stator direct‐drive permanent magnet motor (CCSDD‐PMSM) structure.
Zeyu Liu   +4 more
doaj   +1 more source

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