Archives-November 2019

Myositis ossificans circumscribed (MOC) is a rare, benign condition characterized by heterotopic ossification of the striated muscles often occurring in young subjects. We propose to illustrate from an observation, the aspects realized by the ossification myositis circumscribed in conventional radiology, in tomodensitometry in order to avoid the potential diagnostic confusion with a malignant bone tumor.

Kaolin is a clay material consisting of substantially pure kaolinite. Kaolin is used in many industrial applications such as ceramic, paint and paper industries. This paper aims to study, for the first time, the beneficiation of Libya kaolin ore. Attrition scrubbing and classification were used to separate the free silica. Wet high intensity magnetic separation was applied to remove colored contaminants. The kaolinite mineral content increased from 63.5 % to 85 %. The whiteness and brightness of kaolin concentrates were efficiently improved. A final kaolin products containing 0.79 – 0.85% Fe2O3 and 0.66 – 0.68% TiO2 were obtained with whiteness about 85%.

Foot surgery is characterized by intense postoperative pain, difficult to control even when using balanced multimodal analgesia associating paracetamol, anti-inflammatory drugs and opioids. Ankle blocks were all but abandoned. Complications are rare using regional anesthesia for postoperative analgesia even after extensive foot surgery, however the consequences of motoric or sensory deficits can be extremely devastating as it impacts mobility.Revival of ankle blocks are a perfect example of the high impact of new technological advances in improving ambulatory surgical care after foot surgery.

The modeling of a parallel ferroresonant circuit leads to a single-phase model formed of many elements, which of course translates into a large number of state variables, and therefore of high dimension. We show how it is possible to gradually reduce the adopted model dimension while retaining certain characteristic quantities which seemed important for the ferroresonance study; and validate the different approximations made. Different results temporal and frequency obtained numerically on the developed models (simulating parallel ferroresonance real cases), are presented and commented. We confirm that the parallel ferroresonance is sufficiently represented qualitatively by a reduced model of dimension three.

Table of contents for the month of November 2019