Pulsed Electromagnetic Treatment Research Articles

Improving the quality of recycled water by pulsed electromagnetic treatment

The relevance of this work is of exceptional importance and is widely used in technological processes at most industrial enterprises, including oil refineries. Industrial enterprises of the oil industry are subject to strict controls on environmental protection, water consumption, and the quantity and quality of wastewater discharged. This article presents data on the treatment of recycled water before the clarification section by reverse osmosis using an electromagnetic treatment device. The authors made a pilot reverse osmosis unit with a capacity of 0.370 m3/h, the permeate output (for purified water) was 0.3 m3/h, the concentrate discharge was 0.07 m3/h. The test bench operates in a closed circuit, i.e. the permeate and brine are returned to the original container. The technological scheme of purification to the standards that meet the requirements of makeup water, as well as the technical specification for the design of industrial recycling water supply systems, has been developed.

Therapeutic compression materials and wound dressings for chronic venous insufficiency: A comprehensive review.

Chronic venous insufficiency (CVI) is a common disorder worldwide. Related pathophysiological mechanisms reportedly involve venous pooling and reduced venous return, leading to heaviness, aching, itchiness, tiredness, varicosities, pigmentation, and even lower limb ulceration. Approaches adopted to manage CVI at various stages of clinical-etiology-anatomy-pathophysiology include compression therapy, pharmacological treatment, ultrasound treatment, surgery, electrical or wireless microcurrent stimulation, and pulsed electromagnetic treatment. Among these, polymer-based therapeutic compression materials and wound dressings play increasingly key roles in treating all stages of CVI because of their unique physical, mechanical, chemical, and biological functions. However, the characteristics, working mechanisms, and effectiveness of these CVI treatment materials are not comprehensively understood. The present systematic review examines the structures, properties, types, and applications of various polymer-based compression materials and wound dressings used in prophylaxis and treatment of CVI. Existing problems, limitations, and future trends of CVI treatment materials are also discussed. This review could contribute to the design and application of new functional polymer materials and dressings to enhance the efficiency of CVI treatments, thereby facilitating patients' self-care ability and long-term health improvement.

Effect of Electromagnetic Treatment on Fatigue Resistance of 2011 Aluminum Alloy

Beneficial effects of the electromagnetic treatment on fatigue resistance were reported on several engineering alloys. These could be linked to the dislocation activity and the rearrangement of the crystal structure of the material under the electromagnetic field (EMF), resulting in delayed crack initiation. This paper presents an experimental study on the effect of pulsed electromagnetic treatment on the fatigue resistance of 2011 aluminum alloy. Circular cantilever specimens with loads at their ends were tested on rotating fatigue machine SM1090. Fatigue lives of treated and untreated specimens were analyzed and compared systematically. It has been found that the effect of the pulsed electromagnetic treatment on the fatigue resistance is dependent on the intensity of the pulsed EMF and the number of the treatment applied. Clear beneficial effect of the pulsed electromagnetic treatment on the fatigue resistance of the aluminum alloys has been observed, demonstrating a potential new technique to industries for fatigue life extension.

Effects of presowing pulsed electromagnetic treatment of tomato seed on growth, yield, and lycopene content.

The use of magnetic field as a presowing treatment has been adopted by researchers as a new environmental friendly technique. The aim of this study was to determine the effect of magnetic field exposure on tomato seeds covering a range of parameters such as transplanting percentage, plant height, shoot diameter, number of leaves per plant, fresh weight, dry weight, number of flowers, yield, and lycopene content. Pulsed electromagnetic field was used for 0, 5, 10, and 15 minutes as a presowing treatment of tomato seeds in a field experiment for two years. Papimi device (amplitude on the order of 12.5 mT) has been used. The use of pulsed electromagnetic field as a presowing treatment was found to enhance plant growth in tomato plants at certain duration of exposure. Magnetic field treatments and especially the exposure of 10 and 15 minutes gave the best results in all measurements, except plant height and lycopene content. Yield per plant was higher in magnetic field treatments, compared to control. MF-15 treatment yield was 80.93% higher than control treatment. Lycopene content was higher in magnetic field treatments, although values showed no statistically significant differences.

Redistribution of residual welding stresses in pulsed electromagnetic treatment

Experimental results demonstrate that in an AMg6 alloy specimen after pulsed electromagnetic treatment, a significant decrease and redistribution of residual welding stresses are observed. Numerical simulation corroborates that the treatment effect is not associated with a thermal field influence.

TREATMENT OF CONGENITAL AND INFANTILE PSEUDARTHROSIS OF THE TIBIA WITH PULSING ELECTROMAGNETIC FIELDS

Summary and Conclusions The management of congenital and infantile pseudarthrosis of the tibia poses difficult problems because of the variability in the type and prognosis of the lesion and varied response to surgical treatment. Whatever the severity of the lesion, the use of pulsed electromagnetic fields can be expected to improve the prognosis for union by a factor of at least 20 per cent. In a very few patients, usually those with pseudarthrosis presenting later in life, pulsed electromagnetic fields alone together with plaster immobilization may be sufficient to produce union. In some, partially successful previous surgery may be made completely successful by subsequent application of pulsed electromagnetic fields. In patients with a fair or good prognosis as regards the type of lesion, a combination of surgery and pulsed electromagnetic treatment, some period of which may also be given before surgical treatment, gives a moderately high rate of success. In the three groups already described, the overall success rate is likely to be more than 70 per cent. In lesions with a poor prognosis, or after multiple surgical procedures in an older child, a combination of very adequate further surgery and pulsed electromagnetic fields can produce union in perhaps 30 per cent of cases, but it is unwise to commence any treatment if the limb is already unacceptably short, if there is gross wasting of the limb with evidence of inadequate vascular supply, and/or if the joints of the foot and ankle are stiff and associated with deformity. In such cases, the procedure of choice is amputation.

Treatment of Congenital and Infantile Pseudarthrosis of the Tibia with Pulsing Electromagnetic Fields

The management of congenital and infantile pseudarthrosis of the tibia poses difficult problems because of the variability in the type and prognosis of the lesion and varied response to surgical treatment. Whatever the severity of the lesion, the use of pulsed electromagnetic fields can be expected to improve the prognosis for union by a factor of at least 20 per cent. In a very few patients, usually those with pseudarthrosis presenting later in life, pulsed electromagnetic fields alone together with plaster immobilization may be sufficient to produce union. In some, partially successful previous surgery may be made completely successful by subsequent application of pulsed electromagnetic fields. In patients with a fair or good prognosis as regards the type of lesion, a combination of surgery and pulsed electromagnetic treatment, some period of which may also be given before surgical treatment, gives a moderately high rate of success. In the three groups already described, the overall success rate is likely to be more than 70 per cent. In lesions with a poor prognosis, or after multiple surgical procedures in an older child, a combination of very adequate further surgery and pulsed electromagnetic fields can produce union in perhaps 30 per cent of cases, but it is unwise to commence any treatment if the limb is already unacceptably short, if there is gross wasting of the limb with evidence of inadequate vascular supply, and/or if the joints of the foot and ankle are stiff and associated with deformity. In such cases, the procedure of choice is amputation.