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Effect of fiber orientation in gelled poly (vinylience fluoride) electrospun me...

Battery separators based on electrospun membranes of poly(vinylidene fluoride) (PVDF) have been prepared in order to study the effect of fiber alignment on the performance and characteristics of the membrane. The prepared membranes show an average fiber diameter of ~272 nm and a degree of porosity of ~87 %. The gel polymer electrolytes are prepared by soaking the membranes in the electrolyte solution. The align...

Motor behavioral abnormalities and histopathological findings of Wistar rats in...

The objective of the present study was to describe motor behavioral changes in association with histopathological and hematological findings in Wistar rats inoculated intravenously with human T-cell lymphotropic virus type 1 (HTLV-1)-infected MT2 cells. Twenty-five 4-month-old male rats were inoculated with HTLV-1-infected MT2 cells and 13 control rats were inoculated with normal human lymphocytes. The behavior...

Pain in tropical spastic paraparesis: HTLV-I associated myelopathy patients

Chemical absorption of H2S for biogas purification

This work presents an experimental study of purification of a biogas by removal of its hydrogen sulphide (H2S) content. The H2S was removed by means of chemical absorption in an iron-chelated solution catalyzed by Fe/EDTA, which converts H2S into elemental sulphur (S). Preparation of the catalyst solution and the results of biogas component absorption in the catalyst solution (0.2 mol/L) are presented. These re...

Paraparesia espástica tropical: uma redefinição necessária

Brazilian studies on tropical spastic paraparesis: a meta-analysis

Tropical spastic paraparesis (TSP) is a chronic progressive myelopathy and in most of the cases has a retroviral (HTLV-1) etiology, when it is denominated HTLV-1 associated-mielopathy (HAM/TSP). Around 433 cases of TSP have been described in Northeast and Southeast Brazil. Among these cases, 157 (36.2%) are HTLV-1 positive and 276 (63.7%) are negative. Their mean age is 43.8 years with a slight predominance of ...

Increased intracranial pressure in a case of spinal cervical glioblastoma multi...

The authors describe a rare case of increased intracranial hypertension consequent to a spinal cervical glioblastoma multiforme in a young patient. They analyse the physiopathology of intracranial hypertension in spinal tumors and the rarity of such kind of tumor in this location, and its clinico-pathological aspects.

An association of central post-stroke pain and thalamic hand

Thalamic hand is one of the clinical expressions of the painful thalamic syndrome. This paper relates on a case of a patient with a syndrome of central post-stroke and suprathalamic pain who (also presents a thalamic hand. The authors emphasize the notion that in the syndrome of central post-stroke pain a direct or indirect (infra or supra)-thalamic lesion seems to be an essential element for the genesis of cen...