Results 31 to 40 of about 104,361 (241)

Two-Dimensional Symmetric Box Delivery Motion Prediction and Validation: Subtask-Based Optimization Method

open access: yesApplied Sciences, 2020
Box delivery is a complicated manual material handling task which needs to consider the box weight, delivering speed, stability, and location. This paper presents a subtask-based inverse dynamic optimization formulation for determining the two ...
Yujiang Xiang   +3 more
doaj   +1 more source

Internal Combustion Engines at the Turn of Millennia

open access: yesCommunications, 1999
Trends in the development of piston internal combustion engines in a view of tightened ecological regulations (exhaust and noise emissions, fuel consumption) have been presented in this paper.
Jerzy Merkisz, Vladimir Hlavna
doaj   +1 more source

Evaluation of Micro-focused Ultrasound for Lifting and Tightening the Face [PDF]

open access: yesArchives of Aesthetic Plastic Surgery, 2015
Background Micro-focused ultrasound (MFU) has developed as an effective, noninvasive, skin-tightening method. However, certain factors have limited its replacement of invasive surgical procedures, including a relative lack of efficacy, persistence, and ...
In Ho Lee   +3 more
doaj   +1 more source

Estimation of the efficiency of road construction machines in the design [PDF]

open access: yesE3S Web of Conferences
The reasons for the decrease in the efficiency of road construction machines are fluctuations in speed and load, deviations of which from the optimal value in terms of efficiency and causes an increase in energy losses and a decrease in efficiency.
Barbashov Nikolay   +2 more
doaj   +1 more source

Effects of Gender and Recurrent Low Back Pain on Lifting Style

open access: yesCentral European Journal of Sport Sciences and Medicine, 2015
Objective: The purpose of this study was to examine the influence of gender and existing, recurrent low back pain (rLBP) on lower extremity and trunk mechanics, as well as neuromuscular control, during a lift task.
Ram Haddas, Philip Sizer, James Yang
doaj   +1 more source

Granular jamming based robotic gripper for heavy objects; pp. 421–428 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2019
Moving heavy objects with overhead cranes requires the operator to fasten the object to a hook with ropes or chains. This is a time-consuming process, which could be avoided by using universal grippers that can lift objects of any shape.
Jesse Miettinen   +4 more
doaj   +1 more source

Work-Related Risk Assessment According to the Revised NIOSH Lifting Equation: A Preliminary Study Using a Wearable Inertial Sensor and Machine Learning

open access: yesSensors, 2021
Many activities may elicit a biomechanical overload. Among these, lifting loads can cause work-related musculoskeletal disorders. Aspiring to improve risk prevention, the National Institute for Occupational Safety and Health (NIOSH) established a ...
Leandro Donisi   +5 more
doaj   +1 more source

Mechanical simulation and installation position optimisation of a lifting cylinder of a scissors aerial work platform

open access: yesThe Journal of Engineering, 2018
The force of a lifting cylinder is the main factor of the alternating stress of scissors arms in a scissors aerial work platform, which seriously affects the fatigue life of structures.
Shanghong He   +3 more
doaj   +1 more source

Energy Efficiency in Electromagnetic and Electro-Permanent Lifting Systems

open access: yesEnergies, 2023
In industrial settings, mechanical systems for clamping workpieces onto machine tools or for lifting and handling ferrous material are often replaced by magnetic clamping systems.
Francesca Oliva   +1 more
doaj   +1 more source

Occupational lifting and pelvic pain during pregnancy: a study within the Danish National Birth Cohort

open access: yesScandinavian Journal of Work, Environment & Health, 2013
OBJECTIVES: Pelvic pain during pregnancy is a common ailment, and the disease is a major cause of sickness absence during pregnancy. It is plausible that occupational lifting may be a risk factor of pelvic pain during pregnancy, but no previous studies ...
Pernille Stemann Larsen   +5 more
doaj   +1 more source

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