BWO based imaging for control of MWCNTs polymer composites homogeneity

Terahertz imaging system based on backward wave oscillator for the defectoscopy of composites in the industry is presented. At a frequency of 874 GHz images of multiwall carbon nanotube agglomerates in a composite are obtained. The possibility of detecting inhomogeneities using level filtering is shown

Системная красная волчанка: особенности течения у беременных и варианты терапии

The prevalence of systemic lupus erythematosus (SLE) varies greatly in different regions of the world. The disease is encountered in different age groups; however it is most common in young and adolescent women (its peak incidence is in the range of 15–25 years). Familial SLE cases are known. The course of SLE in pregnant women is noted to have features due to an increased risk for complications and to pharmacotherapeutic peculiarities. Risk factors for poor pregnancy outcomes, such as high disease activity at the time of conception, active lupus nephritis, and the presence of antiphospholipid antibodies (APA), are identified in patients with SLE. The paper presents antenatal fetal death predictors: proteinuria, thrombocytopenia, APA, and hypertension. When SLE is concurrent with secondary antiphospholipid syndrome (APS), the risk of poor pregnancy outcome is 30%. Management tactics for pregnant women with APS and a dosage regimen are shown to largely depend on history data (the presence (absence) of nonplacental thromboses, the number of spontaneous abortions, prior therapy, etc.). There are four patient groups: 1) patients who have only anticardiolipin antibodies without previous pregnancy or one episode of unexplained abortion at less than 10 weeks’ gestation with no history of thrombosis; 2) those who have APS with no history of nonplacental thrombosis and have anticardiolipin antibodies and a history of two or more unexplained spontaneous abortions at less than 10 weeks’ gestation; 3) those who have APS and a history of nonplacental thromboses (who have taken warfarin prior to pregnancy); 4) those in whom standard therapy is ineffective during their next pregnancy. The paper presents therapy options for each patient group.It is concluded that effective therapeutic strategy for SLE, including that in pregnant women, implies patient monitoring to long maintain remission (low disease activity).Распространенность системной красной волчанки (СКВ) существенно различается в разных регионах мира. Заболевание встречается в разных возрастных группах, однако наиболее часто развивается у молодых женщин и девочек-подростков (пик заболеваемости приходится на 15–25 лет). Известны семейные случаи СКВ. Отмечено, что течение СКВ у беременных характеризуется повышенным риском осложнений, а также особенностями фармакотерапии. Выделены факторы риска неблагоприятного прогноза вынашивания беременности у больных СКВ: высокая активность заболевания на момент зачатия, активный люпус-нефрит, наличие антифосфолипидных антител (АФЛ). Представлены предикторы антенатальной гибели плода: протеинурия, тромбоцитопения, наличие АФЛ и артериальная гипертензия. При сочетании СКВ и вторичного антифосфолипидного синдрома (АФС) вероятность неблагоприятного исхода беременности составляет 30%. Указано, что тактика ведения беременных с АФС, режим дозирования препаратов во многом зависят от данных анамнеза – наличия (отсутствия) неплацентарных тромбозов, количества спонтанных абортов, предшествующей терапии и др. Выделено четыре группы больных: 1) только с наличием антикардиолипиновых антител без предшествующей беременности или с одним эпизодом необъяснимого спонтанного аборта до 10 нед гестации, без тромбозов в анамнезе; 2) с АФС без неплацентарных тромбозов в анамнезе и с наличием антикардиолипиновых антител и ≥2 необъяснимыми спонтанными абортами (до 10 нед гестации) в анамнезе; 3) с АФС и неплацентарными тромбозами в анамнезе (получавшие варфарин до беременности); 4) с неэффективностью стандартной терапии в период следующей беременности. Представлены варианты терапии для каждой группы пациенток. Сделан вывод, что эффективная терапевтическая стратегия при СКВ, в том числе у беременных, подразумевает проведение мониторинга пациенток с целью длительного поддержания ремиссии (низкой активности) заболевания

Biomass of Scyphozoan Jellyfish, and Its Spatial Association with 0-Group Fish in the Barents Sea

An 0-group fish survey is conducted annually in the Barents Sea in order to estimate fish population abundance. Data on jellyfish by-catch have been recorded since 1980, although this dataset has never been analysed. In recent years, however, the ecological importance of jellyfish medusae has become widely recognized. In this paper the biomass of jellyfish (medusae) in 0–60 m depths is calculated for the period 1980–2010. During this period the climate changed from cold to warm, and changes in zooplankton and fish distribution and abundance were observed. This paper discusses the less well known ecosystem component; jellyfish medusae within the Phylum Cnidaria, and their spatial and temporal variation. The long term average was ca. 9×108 kg, with some years showing biomasses in excess of 5×109 kg. The biomasses were low during 1980s, increased during 1990s, and were highest in early 2000s with a subsequent decline. The bulk of the jellyfish were observed in the central parts of the Barents Sea, which is a core area for most 0-group fishes. Jellyfish were associated with haddock in the western area, with haddock and herring in the central and coastal area, and with capelin in the northern area of the Barents Sea. The jellyfish were present in the temperature interval 1°C<T<10°C, with peak densities at ca. 5.5°C, and the greatest proportion of the jellyfish occurring between 4.0–7.0°C. It seems that the ongoing warming trend may be favourable for Barents Sea jellyfish medusae; however their biomass has showed a recent moderate decline during years with record high temperatures in the Barents Sea. Jellyfish are undoubtedly an important component of the Barents Sea ecosystem, and the data presented here represent the best summary of jellyfish biomass and distribution yet published for the region

MUSiC : a model-unspecific search for new physics in proton-proton collisions at root s=13TeV

Results of the Model Unspecific Search in CMS (MUSiC), using proton-proton collision data recorded at the LHC at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches.Peer reviewe

Development and validation of HERWIG 7 tunes from CMS underlying-event measurements

This paper presents new sets of parameters (“tunes”) for the underlying-event model of the HERWIG7 event generator. These parameters control the description of multiple-parton interactions (MPI) and colour reconnection in HERWIG7, and are obtained from a fit to minimum-bias data collected by the CMS experiment at s=0.9, 7, and 13Te. The tunes are based on the NNPDF 3.1 next-to-next-to-leading-order parton distribution function (PDF) set for the parton shower, and either a leading-order or next-to-next-to-leading-order PDF set for the simulation of MPI and the beam remnants. Predictions utilizing the tunes are produced for event shape observables in electron-positron collisions, and for minimum-bias, inclusive jet, top quark pair, and Z and W boson events in proton-proton collisions, and are compared with data. Each of the new tunes describes the data at a reasonable level, and the tunes using a leading-order PDF for the simulation of MPI provide the best description of the dat

Measurement of the top quark Yukawa coupling from t(t)over-bar kinematic distributions in the dilepton final state in proton-proton collisions at root s=13 TeV

Peer reviewe

Development of a Complex Mathematical and Hardware-in-the-Loop Simulation of the System for Controlling the Skew of Sections of Mechanization of the Wing

In this paper, an innovative approach to the development of a skew control system is discussed to increase the speed and quality of the development of this system. To achieve this goal, we chose the Hardware-in-the-Loop simulation method, which involved creating a mathematical model to test a real control unit. This method reduced time and material costs at both the development and testing stages by enabling quick reconfiguration of the system and the changing parameters of the control model. As a result of this work, we developed a complex of mathematical and full-scale simulations, which included the SCS simulation scheme with distortion detection algorithms and SCS semi-random simulation stand

Development of a Complex Mathematical and Hardware-in-the-Loop Simulation of the System for Controlling the Skew of Sections of Mechanization of the Wing

In this paper, an innovative approach to the development of a skew control system is discussed to increase the speed and quality of the development of this system. To achieve this goal, we chose the Hardware-in-the-Loop simulation method, which involved creating a mathematical model to test a real control unit. This method reduced time and material costs at both the development and testing stages by enabling quick reconfiguration of the system and the changing parameters of the control model. As a result of this work, we developed a complex of mathematical and full-scale simulations, which included the SCS simulation scheme with distortion detection algorithms and SCS semi-random simulation stand

Mathematical simulation of an automatic steam turbine control system

The paper considers the construction of a mathematical model for an electrohydraulic system to control automatically the Т-63-13,0/0,25 product manufactured by JSC Kaluga Turbine Plant. Mathematical simulation of control systems makes it possible to improve considerably the quality of control, that is, the accuracy and reliability of such systems, as well as to accelerate greatly the development and calculation of the control system and the parameters of its individual components. The T-63-13,0/0,25 mathematical model of the ASTCS allows estimating the effects of design parameters during any load dropping (in a range of 0 to 100%) and the quality of control for the monitored parameters both in the process of operation as part of an isolated power system (generator output, frequency) and an integrated power system (generator output). A mathematical representation has been developed in the model for the control units, the T-63-13,0/0,25 product model, and the electronic controlling part of each of the control units. It has been proposed that pulse-width modulation be used to control the synchronous motors which makes it possible to control the synchronous machine shaft speed by changing the supply voltage frequency. To this end, the control system’s model uses a frequency converter which is proposed to be used in the real control system. The developed control system with one adjustable steam extraction in the T-63-13,0/0,25 steam turbine is coupled and autonomous, that is, each of the two meters for the turbine’s controlled parameters has effect on both steam distribution systems such that a deviation for one of the controlled parameters does not lead to excitations in the other