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Wear Compliance and Activity in Children Wearing Wrist- and Hip-Mounted Accelerometers
RAW ACCELERATIONS WEAR TIME PHYSICAL ACTIVITY
2017/4/13
Purpose: This study aimed to 1) explore children’s compliance to wearing wrist- and hip-mounted accelerometers, 2) compare children’s physical activity (PA) derived from raw accelerations of wrist and...
Wear of disc mill hammer in wet grinding processes on groundnut cake for fish feed production
plant protein processing conditions metal surface optimize responses
2015/12/30
There is need to determine the wear rates of disc mill hammer used for grinding groundnut cake, a major plant protein in fish feed. This surface wear damage characterised by scoring, cutting, deep gro...
Towards Uniform Accelerometry Analysis: A Standardization Methodology to Minimize Measurement Bias Due to Systematic Accelerometer Wear-Time Variation
Accelerometry wear-time variation data standardization
2015/5/22
Accelerometers are predominantly used to objectively measure the entire range of activity intensities – sedentary behaviour (SED), light physical activity (LPA) and moderate to vigorous physical activ...
CMOS feature size scaling has been a source of dramatic performance gains, but it has come at a cost of on-chip wear-out. Negative Bias Temperature Instability (NBTI) is one of the main on-chip wear-o...
Body and didactic mediation. Experimental use of a Sense Wear Armband in a university context
ENACTIVISM EMBODIMENT SENSE WEAR ARMBAND DIDACTIC MEDIATION
2013/10/1
The aims of this study was to understand whether instruments used for motion analysis can detect significant information about the processes of learning and teaching. Moving from Enactivism and the aw...
Effect of heat treatment on the microstructure, hardness and abrasive wear resistance of high chromium hardfacing
destabilized austenite carbide dry rubber wheel test factorial regression GMAW toughness
2014/2/24
The effect of destabilization heat treatment on the microstructure, hardness, fracture toughness and abrasive wear
resistance of high chromium hardfacing was investigated. The results from the study...
Evaluation of tractor biodegradable hydraulic fluids on the basis of hydraulic pump wear
test bench cleanliness level flow efficiency agricultural tractor fluid temperature
2014/2/24
Two types of biodegradable hydraulic fluids (HEES and HEPR) with the mineral oil-based hydraulic fluid (HV) were
compared. The tests were performed using a test bench. During the tests with a tracto...
Eff ect of destabilization treatment on microstructure, hardness and abrasive wear of high chromium hardfacing
weld deposit heat treatment carbides precipitation microhardness
2014/2/24
Hardfacing metals are widely used in arc welding and plasma transfer arc technologies and industries. However, application of hardfacing in agriculture is limited due to low toughness after weld depos...
Continuous Wear of Hydrogel Contact Lenses for Therapeutic Use
Therapeutic Use Bandage Soft Contact Lens Continuous Wear Complication
2013/1/31
Purpose: To investigate the efficacy and complications of continuous wear of etafilcon A for therapeutic use. Materials and Methods: The subjects were 228 eyes of 219 outpatients prescribed contact le...
A shock and wear system under environmental conditions subject to internal failures, repair, and replacement
Markovian arrival process Phase-type distribution Replacement Imperfect repairAbstract
2012/4/22
A system in a random environment is considered. The influence of the external conditions is governed by a Markovian arrival process. The internal structure of failure and repair are governed by phase-...
Abrasive Wear Mechanisms of Sand Particles Intruding into ATM Roller-Scraper Tribosystem
Tribosystem Abrasive Wear Mechanism
2011/8/4
The roller-scraper tribosystem of Automatic Teller Machine (ATM) plays an important role in reliable cash requests. However, the abrasive wear of the polymer tribosystem becomes a prominent problem wh...
基于侧向变刚度的轮胎多边形磨损机理分析（Mechanism of Polygonal Wear of Tire Based on Variable Stiffness of Lateral）
车辆 轮胎 多边形磨损 变刚度 机理
2010/12/29
考虑轮胎接地摩擦的非线性特性，建立了基于侧向变刚度的轮胎多边形磨损模型，并对系统的稳定性进行了分析，指出轮胎的自激振动是一种由系统Hopf分岔引起的稳定周期振动现象，通过数值仿真得到了引起胎面自激振动的车速和车轮前束角范围。结果表明：轮胎多边形磨损为一种典型的非线性自激振动现象，其发生与胎面的侧向振动有关，磨损边数近似等于胎面的侧向振动频率与车轮转动频率之比。所建模型能够很好地解释轮胎多边形磨损的...
Wear of plasma nitrided and nitrocarburised AISI 316L austenitic stainless steel
Wear of plasma nitrided nitrocarburised AISI 316L stainless steel
2010/8/12
The use of coatings and surface engineered components is increasing and is driven by the need for improved hardness, corrosion and wear resistance [1]. Austenitic stainless steels are the most importa...
The application of statistical models in wear resistance simulations of Al-Al2O3 composites
Composites Infiltration Simulation Statistical models
2010/8/17
Currently, the most widespread use have found the composite materials with the light metals matrix, and especially from the aluminium alloys, reinforced with the ceramic particles or fibres that can b...
The technique of depositing of the hard and thin coatings is one of the most spectacular aspect of the materials engineering development in the last years. The physical vapour deposition (PVD) method ...