It is evident that matrix metalloproteinases (MMPs) are involved in the pathophysiology of different inflammatory skin diseases. In this pilot study, we investigated the ability of very high frequency ultrasound—freq...It is evident that matrix metalloproteinases (MMPs) are involved in the pathophysiology of different inflammatory skin diseases. In this pilot study, we investigated the ability of very high frequency ultrasound—frequencies of approximately 10 MHz—to modulate the activity of MMPs in the skin in inflammatory skin diseases such as acne and rosacea. It was shown that such waves can significantly improve the skin appearance in these diseases;however, the results are dependent on applied treatment schedule. The best results were obtained through the application of a super-fractionation strategy in the form of home treatments carried out twice daily.展开更多
The influence of hydrochloric or sulphuric acid treatment on the electro-physical properties of superthin basalt fiber (STBF) made from Armenian basalt rocks was studied. Specific electric resistance for direct and al...The influence of hydrochloric or sulphuric acid treatment on the electro-physical properties of superthin basalt fiber (STBF) made from Armenian basalt rocks was studied. Specific electric resistance for direct and alternating currents, dielectric parameters of ε, and ε,, were measured. It is shown that specific resistance and dielectric parameters of super-thin basalt fiber change essentially after hydrochloric or sulphuric acid treatment. The temperature dependences of these parameters were studied, too, and their non–monotonic behavior was observed. The probable variation of mentioned STBF parameters is explained by different water absorption capacity of pores as a result of acid treatment.展开更多
文摘It is evident that matrix metalloproteinases (MMPs) are involved in the pathophysiology of different inflammatory skin diseases. In this pilot study, we investigated the ability of very high frequency ultrasound—frequencies of approximately 10 MHz—to modulate the activity of MMPs in the skin in inflammatory skin diseases such as acne and rosacea. It was shown that such waves can significantly improve the skin appearance in these diseases;however, the results are dependent on applied treatment schedule. The best results were obtained through the application of a super-fractionation strategy in the form of home treatments carried out twice daily.
文摘The influence of hydrochloric or sulphuric acid treatment on the electro-physical properties of superthin basalt fiber (STBF) made from Armenian basalt rocks was studied. Specific electric resistance for direct and alternating currents, dielectric parameters of ε, and ε,, were measured. It is shown that specific resistance and dielectric parameters of super-thin basalt fiber change essentially after hydrochloric or sulphuric acid treatment. The temperature dependences of these parameters were studied, too, and their non–monotonic behavior was observed. The probable variation of mentioned STBF parameters is explained by different water absorption capacity of pores as a result of acid treatment.