PURPOSE Research verifying the ability of various devices to reduce the forces required for transfers is virtually nonexistent. Therefore, we compared the push forces required to move passive seated subjects across a horizontal surface when four different methods were employed. SUBJECTS 10 men and 14 women (weight 49.1-96.8 kg) served as subjects. METHODS AND MATERIALS Passive subjects were...

this investigation presents the effect of various parameters on foam stability and its rheological properties. the underlying idea of this experiment is generating of drilling foam with uniform bubbles. the main problem of foam using is controlling its stability during field application. the most important parameters which cause instability in foam are gravity drainage, gas diffusion and bubble...

The annular foam breaker is one which uses the vacuum and shear force generated by the Coanda effect to break foam. Its effectiveness in destroying drilling foam has been test in wellbore flow simulation loop experimental stand. Experimental results showed that the operating pressure of the annular foam breaker should be larger than 0.6MPa and the stabilizers concentration of the foam drilling ...

Biogeosciences Discussions This discussion paper is/has been under review for the journal Biogeosciences (BG). Please refer to the corresponding final paper in BG if available. Abstract Climate change induced drying and flooding may alter the redox conditions of organic matter decomposition in peat soils. The seasonal and intermittent changes in pore water solutes (NO − 3 , Fe 2+ , SO 2− 4 , H ...

BACKGROUND Chronic ulnar nerve compression is believed to be the primary cause of sensory and motor impairments of the hand in cyclists, a condition termed Cyclist's Palsy. The purpose of this study was to quantitatively evaluate the effects that hand position and glove type can have on pressure over the ulnar nerve, specifically in the hypothenar region of the hand. METHODS Thirty-six experi...

Motorcycles are considered a cost-effective and major means of transportation, particularly in the developing countries. However, motorcyclists are at higher risk of head and brain injuries in road crashes, which is the primarily cause of most of the fatalities occurred. Wearing a protective helmet is an efficient way for the safety of the motorcyclist, since it reduces the severity of head inj...

For the high-value utilization of tuna liver, effects acid-aided (Acid-pH) and alkali-aided pH-shifting (Alkali-pH) on physicochemical functional properties protein powder prepared by freeze-drying were studied. As expected, with high purity could be obtained through Acid-pH or Alkali-pH followed freeze drying, while led to a higher yield, ratio, lower lipid ratio heavy metal content than Acid-...

foam injection is becoming a standard conditioning agent when tunnelling with an earth-pressure balanced shield, resulting in an increasing interest in this technique. the technique is mostly based on empirical rules and experience. to be able to determine what foam and how may foam has to be injected for different soils, it is necessary to know the mechanical parameters of the foam-water-soil ...