Large-size Resistive Micromegas have been chosen for the upgrade of the forward muon spectrometer of the ATLAS experiment, the New Small Wheel project. These chambers, together with small-strip Thin ...Gap Chambers (sTGC), allow reconstruction of high-momentum muon tracks in a high-radiation environment and provide a robust low-threshold single-muon trigger. A collaboration of seven INFN units built 32 SM1 type chambers, corresponding to one fourth of the total number needed for this upgrade. Each SM1 chamber has a surface of approximately 2 m2 and four sensitive layers. The production was shared among five INFN construction sites and it was completed in fall 2020. The construction methods, as well as the results of the quality tests done on components of the detector and on the assembled chambers, are reported in the present paper.
Purpose: to reveal a correlation between the symptoms and heart rhythm as well as to evaluate the incidence of symptomatic and asymptomatic paroxysmal atrial fibrillation (AF) in patients with ...paroxysmal AF after catheter ablation and antiarrhythmic drug therapy (AAD) through long-term observation based on data from implantable cardiac heart monitors (ICM).Materials and Methods: 92 patients with paroxysmal AF were randomly broken into two groups: 1) AF catheter ablation + ICM (Group I; n=46); 2) AAD + ICM (Group II; n=46). The data recorded by the device were matched against the symptoms diaries kept by the patients.Results: through the follow-up period (24 months), 17 (40%) patients of the catheter ablation Group and another 33 (71.8%) patients belonging to the AAD Group had AF relapse, whereas in 4 (23.5%) patients of the catheter ablation group and in 1 (3%) patients of the AAD group the paroxysms were asymptomatic. Only 30% of episodes recorded by the ICM in the AF catheter ablation + ICM Group and 78% of episodes in patients receiving AAD + ICM were found to be true AF paroxysms.Summary: the rhythm status did not match the patients’ symptoms in terms of AF, which was observed in 70% of the cases after catheter ablation and in 22% of cases in the AAD group. Asymptomatic AF was more common among the patients belonging to the catheter ablation group (23.5%) if compared to those who underwent AAD (3%). The subjective evaluation of the symptoms done by the patients regarding their arrhythmia did not reflect the true state of things related to the heart rhythm, which makes such evaluation not reliable if employed to judge the treatment efficiency.
The article develops an algorithm of assessment of potential of use of renewable sources of energy with the aim to cover needs of recreational objects. The article reveals scientific principles of ...transformation of the power system and recreational economy of the Crimea on the basis of a wider application of the renewable sources of energy, including the solar one, in the result of which the situation in the region will change: ecological situation will improve, power independence of recreational objects will increase, and probability of man-caused catastrophes will reduce. The article considers results of practical introduction of scientific developments in the sphere of application of renewable sources of energy at recreational objects and offers a logical scheme of the algorithm of construction of methods of application of renewable sources of energy at recreational objects, which include four main stages. Each of the stages and items of the algorithm requires further detalisation and methodical development.Целью статьи является разработка алгоритма оценки перспективности использования возобновляемых источников энергии с целью покрытия нужд рекреационных объектов. В данной статье раскрываются научные принципы преобразования энергетики и рекреационного хозяйства Крыма на базе более широкого использования возобновляемых источников энергии, в том числе и солнечной, в результате которого изменится ситуация в регионе: улучшится экологическая ситуация, повысится энергонезависимость рекреационных объектов, снизится вероятность техногенных катастроф. На основе рассмотрения результатов практического внедрения научных разработок в сфере применения возобновляемых источников энергии на рекреационных объектах предложена логическая схема алгоритма построения методики применения возобновляемых источников энергии на рекреационных объектах, включающая в себя четыре основных этапа. Каждый из этапов и пунктов алгоритма требует дальнейшей детализации и методической проработки.
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