The main goal of the research presented in this paper was to evaluate the possibility of using standard Linux for embedded real-time applications in manufacturing as a consequence of dramatic improvements in hardware computing power and free software quality in the last few years. After an accurate analysis of the problems related to making Linux, a native Unix-like fair kernel, real-time, laboratory tests showed that a large variety of applications (up to 1 KHz) can be implemented using Linux and commercial-of-the-shelf (COTS) hardware. A practical example of the control system of a marking machine for steelworks is reported and discussed.
Background: Optimal skin rejuvenation requires therapy of epidermal and dermal changes. Most existing fractional laser based can deliver ablative or deep dermal heating. Treatments with CO 2 lasers that deliver both are usually associated with significant pain and patient downtime. The objective of this study was to assess the effectiveness of a novel phase controlled RF system for skin rejuvenation on face and body areas. This device uses the interaction between multiple phase controlled radiofrequency (RF) sources to ablate epidermis in 112, 300-m wide contact points, simultaneously with the delivery of a nonablative deep dermal heat to a depth of more than 800m. Methods: Twenty subjects with medium to moderate signs of skin aging were enrolled in the study. Patients were photographed using standard methods. Each patient received between one and two treatment passes.Results: All subjects experienced mild edema and mild erythema as an immediate response to treatment. Edema resolved after up to 1hour posttreatment and erythema lasted up to 2 days. Microablative crusts lasted up to 4 days on facial areas and up to 7 days on body areas. Patients photographs before and 2, 4, and 8 weeks posttreatment were graded according to the Fitzpatrick wrinkle and elastosis scale by two blinded dermatologists. Conclusions: The presented results describe, for the first time, a treatment that offers a combination of RF microablation and volumetric deep dermal heating for the simultaneous and fast epidermal and dermal skin rejuvenation effect.
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