The effect of industrial sludge toxicity on the cell growth of a green paramecium, Paramecium bursaria was examined. P. bursaria cells were cultured in a lettuce medium supplemented with various concentrations of sludge suspension at 23 °C under LD (ligh and dark cycle) condition. Results suggested that P. bursaria proliferates normally even at 1.5% sludge suspension. However, 1.5x10 % sludge s...

Vehicle suspension design must fulfill some conflicting criteria. Among those is ride comfort which is attained by minimizing the acceleration transmitted to the sprung mass, via suspension spring and damper. Also good handling of a vehicle is a desirable property which requires stiff suspension and therefore is in contrast with a vehicle with good ride. Among the other desirable features of a ...

The paper presents the modeling and control design of a variable-geometry suspension system, which is applied as independent wheel steering for in-wheel electric vehicles. The variablegeometry suspension modifies the tilting of the wheel, which has an effect on the steering of the wheels through the variation of the scrub radius. In the paper the model of the suspension-steering system and the ...

Based on the existing dual-stage control scheme for hard disk drives, this paper focuses on the design and analysis of adaptive feedforward control of airflow induced suspension vibration, which utilizes the vibration signal obtained from instrumented suspension. In this scheme, a strain signal on the surface of the instrumented suspension is obtained which is indicative of the suspension’s vib...

We undertook a comparative study of the effects of the hormone hydrocortisone (Hy) on C6 glioma cells grown in monolayer and in suspension in cultures. We found Hy reversibly renders C6 cells anchorage- and serum-dependent for their growth. In monolayer cultures, Hy was found to inhibit cell cycle traversing exclusively at G1 phase. In agarose suspension, Hy was found to block colony developmen...

Multi-site collapse of the upper airway in sleep-related breathing disorders can be treated with multilevel surgery. Multilevel surgery is defined as simultaneous interventions at two or more levels of the upper respiratory tract. The aim of the present study is to analyse long-term complications of multi-level surgery with or without hyoid suspension. A group of 192 patients with multilevel su...

Based on the characteristic of a type of commercial vehicle, a multi-body model of its full suspension system with twenty Degree of Freedom (DOF) was established in MSC.ADAMS. After evaluating relative condition parameters such as stiffness and damping index on the simulation model, the effects of outside exciting on the suspension system have been worked out numerically. The harmonic response ...

Gravity compensation suspension systems are essential to support space structures during tests on Earth, but also impose constraints on the structures that have the effect of changing their behavior. A computational and experimental study of the interaction of a rigid panel solar array model with a manually adjustable suspension system during quasi-static deployment tests in the 1-g environment...

A 2D contact dynamics model is proposed as a microscopic description of a collapsing suspension/soil to capture the essential physical processes underlying the dynamics of generation and collapse of the system. Our physical model is compared with real data obtained from in situ measurements performed with a natural collapsing/suspension soil. We show that the shear strength behavior of our coll...

We analyse the consequences of Quincke rotation on the conductivity of a suspension. Quincke rotation refers to the spontaneous rotation of insulating particles dispersed in a slightly conducting liquid and subject to a high DC electric field: above a critical field, each particle rotates continuously around itself with an axis pointing in any direction perpendicular to the DC field. When the s...