Laser-to-proton energy transfer efficiency in laser-plasma interactions

It is shown that the energy of protons accelerated in laser-matter interaction experiments may be significantly increased through the process of splitting the incoming laser pulse into multiple interaction stages of equal intensity. From a thermodynamic point of view, the splitting procedure can be viewed as an effective way of increasing the efficiency of energy transfer from the laser light to protons, which peaks for processes having the least amount of entropy gain. It is predicted that it should be possible to achieve \apprge 100% increase in the energy efficiency in a six-stage laser proton accelerator compared to a single laser-target interaction scheme

Kinesitherapy to Osteosintesis of Ossis Metacarpalis: A Clinical Case

The fractures of the ossis metacarpalis are one of the most common closed traumatic injuries of the arm. They occur from a sudden direct hit from the back of the hand or its lateral surface. Since the dorsal skeleton is not protected by muscles, mechanical force is transmitted directly to the bones. The treatment of this type of fracture is often surgical. In the given case, a surgical treatment with K-needle fixation and immobilization with a plaster cast were performed for 20 days.The purpose of this report is to present a kinesitherapy protocol to maximize the restoration of the hand's functionality.Materials and methods: A study was performed on a 5-year-old patient who underwent several surgeries for a fracture of the 3rd metacarpal bone and trauma to the extensor tendon of the 3rd finger.Results and discussion: Long-term kinesitherapy with its variety of methods and tools at each stage of treatment, assisted the subsequent surgical interventions, and at the end of the period, a complete restoration of the functionality of the arm was established

Flotation Therapy

Flotation therapy uses a reservoir that limits the impact of the environment. It is dark, soundproof, and full of water, which is full of magnesium sulfate to keep you above water, so you have the feeling of soaring in the sky. Elimination of gravity to that extend allows for relaxation of the musculoskeletal and nervous systems.The first tank of this type was created in 1954. by John Lily, an American neurologist. With it, he aims to study the origin of consciousness while removing the effects of outside stimuli.Flotation therapy has many scientifically proven effects on health, such as elevated levels of dopamine and endorphins, pain relief, stress reduction, improved sleep, etc. Based on this, we can use flotation therapy in combination with other tools in the kinesitherapy program to improve results. As this therapy has a lot of positive effects on health, we can use it for different purposes to influence the body in a positive way

Algorithms for Compression of Electrocardiogram Signals

The study is dedicated to modern methods and algorithms for compression of electrocardiogram (ECG) signals. In its original part, two lossy compression algorithms based on a combination of linear transforms are proposed. These algorithms are with relatively low computational complexity, making them applicable for implementation in low power designs such as mobile devices or embedded systems. Since the algorithms do not provide perfect signal reconstruction, they would find application in ECG monitoring systems rather than those intended for precision medical diagnosis. This monograph consists of abstract, preface, five chapters and conclusion. The chapters are as follows: Chapter 1 — Introduction to ECG; Chapter 2 — Overview of the existing methods and algorithms for ECG compression; Chapter 3 — ECG compression algorithm, based on a combination of linear transforms; Chapter 4 — Improvement of the developed algorithm for ECG compression; Chapter 5 — Experimental investigations. Този труд е посветен на съвременните методи и алгоритми за компресия на електрокардиографски (ЕКГ) сигнали. В оригиналната му част са предложени два алгоритъма за компресия със загуби, които са базирани на комбинация от линейни преобразувания. Тези алгоритми се характеризират със сравнително невисока изчислителна сложност, което дава възможност да бъдат реализирани в устройства с ниска консумация на енергия, като например мобилни устройства или вградени системи. Тъй като алгоритмите не позволяват перфектно възстановяване на сигнала, те биха намерили приложение по-скоро в системите за ЕКГ мониторинг, отколкото в тези, предназначени за прецизна медицинска диагностика. Монографията съдържа резюме, предговор, пет глави и заключение. Главите са както следва: Глава 1 — Въведение в електрокардиографията; Глава 2 — Обзор на съществуващите методи и алгоритми за компресия на ЕКГ сигнали; Глава 3 — Алгоритъм за компресия на ЕКГ сигнали, базиран на комбинация от линейни преобразувания; Глава 4 — Усъвършенстване на разработения алгоритъм за компресия на ЕКГ сигнали; Глава 5 — Експериментални изследвания

Permanent Pacing in Patients with Recurrence of Symptoms and Relapse of Left Ventricular Obstruction at Midcavity Level after Alcohol Septal Ablation

Treatment of symptom recurrence after initially successful alcohol septal ablation (ASA) in hypertrophic obstructive cardiomyopathy (HOCM) when accompanied by relapse of intracavitary left ventricular pressure gradient (LVG) is guided by the underlying mechanism. We describe our experience with permanent pacing in three patients with relapse of both LVG and symptoms 7 to 12 months after successful ASA. Even though pressure gradient recurrence was observed at midventricular level, we were able to achieve symptomatic improvement and LVG reduction after right ventricular apex pacing in all three cases. The effect on symptoms was long lasting—the 6-month followup echo-stress tests confirmed good exercise capacity and lack of provocable LVG. We found pacing to be a safe and effective treatment option in this clinical scenario. Based on our overall observations, we propose pacing as a niche treatment for patients with recurrence of LVG at midventricular level after ASA