There are abundant bottom water reservoirs in China. Unlike conventional oil reservoirs, have various problems, such as early breakthrough, short water-free recovery period, and rapid cut increase. For example, during flooding, the injected easily breaks into does not effectively displace upper crude oil. The rate is generally low. Based on this phenomenon, an experimental study of nitrogen foa...

Tricho-rhino-phalangeal syndrome type I (TRPS I) is characterized by a bulbous nose, sparse hair and epiphyseal coning. Autosomal dominant and recessive transmission are suggested. The presence of cone-shaped epiphyses, the major complaint of patients due to swelling over the phalangeal joints, requires differential diagnosis among various syndromes. This paper, describing a ten-year-old girl w...

Carbon dioxide has been used commercially to recover oil from reservoir by enhanced oil recovery technologies for over 40 years. Currently, the CO2 flood is the second most applied enhanced oil recovery (EOR) processes in the world behind steam flood. Water alternating gas (WAG) injection has been a popular method to control mobility and improve volumetric sweep efficiency for CO2 flooding. The...

In this paper, new attitude maneuver using non-holonomic turn is proposed. The essence of this turn is characterized by an under-actuated system which does not have a direct torque device around the intended axis is made through what we call a coning motion. It is well known that falling cat motion utilizes non-holonomic turn. This paper shows the motion structure interpretation, in which a ver...

The problem of a spacecraft tracking a desired trajectory is defined and addressed using adaptive feedback control. The control law, which has the form of a sixth-order dynamic compensator, does not require knowledge of the inertia of the spacecraft. A Lyapunov argument is used to show that tracking is achieved globally. A simple spin about the intermediate principal axis and a coning motion ar...

Neurological deterioration sometimes follows removal of cerebro-spinal fluid by lumbar puncture below a spinal block caused by a tumour. Experience has shown that similar impaction of a spinal intradural tumour may occur following the draining of hydrocephalus. We have used the term "upward spinal coning " to describe this and report four cases in which impaction of an intradural metastasis occ...