Magnetic Field Amplification in Galaxy Clusters and its Simulation

We review the present theoretical and numerical understanding of magnetic field amplification in cosmic large-scale structure, on length scales of galaxy clusters and beyond. Structure formation drives compression and turbulence, which amplify tiny magnetic seed fields to the microGauss values that are observed in the intracluster medium. This process is intimately connected to the properties of turbulence and the microphysics of the intra-cluster medium. Additional roles are played by merger induced shocks that sweep through the intra-cluster medium and motions induced by sloshing cool cores. The accurate simulation of magnetic field amplification in clusters still poses a serious challenge for simulations of cosmological structure formation. We review the current literature on cosmological simulations that include magnetic fields and outline theoretical as well as numerical challenges.Comment: 60 pages, 19 Figure

Simulated Milky Way analogues: implications for dark matter direct searches

We study the implications of galaxy formation on dark matter direct detection using high resolution hydrodynamic simulations of Milky Way-like galaxies simulated within the eagle and apostle projects. We identify MilkyWay analogues that satisfy observational constraints on the Milky Way rotation curve and total stellar mass. We then extract the dark matter density and velocity distribution in the Solar neighbourhood for this set of Milky Way analogues, and use them to analyse the results of current direct detection experiments. For most Milky Way analogues, the event rates in direct detection experiments obtained from the best _t Maxwellian distribution (with peak speed of 223 { 289 km=s) are similar to those obtained directly from the simulations. As a consequence, the allowed regions and exclusion limits set by direct detection experiments in the dark matter mass and spin-independent cross section plane shift by a few GeV compared to the Standard Halo Model, at low dark matter masses. For each dark matter mass, the halo-to-halo variation of the local dark matter density results in an overall shift of the allowed regions and exclusion limits for the cross section. However, the compatibility of the possible hints for a dark matter signal from DAMA and CDMS-Si and null results from LUX and SuperCDMS is not improved

Application of dermatoglyphics for diagnosis coronary heart disease

Метою дослідження була діагностика дерматогліфічних особливостей у хворих на ішемічну хворобу серця (ІХС) для прогнозування, прийняття діагностичних та лікувальних рішень. Об’єктом дослідження були 25 хворих на хронічну ІХС, гіпертонічну хворобу, контрольна група - 32 здорових осіб. Дерматогліфічне дослідження було проведене за методикою зняття відбитків поверхонь фаланг пальців. У хворих на ІХС типовим було збільшення частоти петель та/або завитків четвертого та другого пальців рук. У 29,4% чоловіків, хворих на ІХС спостерігали переважання завитків. Перевага ульнарних петель над радіальними була характерною ознакою для 88,24 % чоловіків, хворих на ІХС. Психогенетичні, стресорні характеристики, особливості впливу генів A,L,W за даними дерматогліфіки є передумовою до корекції діагнозу та лікування хворих на ішемічну хворобу серця, артеріальну гіпертензію, електричну нестабільність міокарда ; Целью исследования была диагностика дерматоглифических особенностей у больных ишемической болезнью сердца (ИБС) для прогнозирования, принятия диагностических и лечебных решений. Обьектом исследования были 25 больных хронической ИБС, гипертонической болезнью, контрольная группа - 32 здоровых. Дерматоглифические исследования были проведены по методике снятия отпечатков поверхностей фаланг пальцев. У больных ИБС типичным было увеличение частоты петельи/ или завитков четвертого и второго пальцев рук. У 29,4 % мужчин, больных ИБС определили преобладание завитков. Преобладание ульнарных петель над радиальными было характерным признаком для 88,24 % мужчин, больных ИБС. Психогенетические, стрессорные характеристики, особенности влияния генов A,L,W по данным дерматоглифики является предпосылкой коррекции диагноза и лечения больных ишемической болезнью сердца, артериальной гипертензией, электрической нестабильностью миокарда ; At present within the pathology of the circulatory system is determined according to the data of genetics, epigenetics (V. N. Kovalenko et al., 2014). Dermatoglyphics can be one of the basic research in this area thanks to the progress of information and latest technologies (Polushkin P. et al, 2012). The purpose of the study was diagnosis dermatoglyphic features in patients with coronary heart disease (CHD) to predict, making diagnostic and therapeutic decisions. Material and methods. The object of the study were 25 patients with coronary heart disease. 3 (52 %) patients from 25 had stable angina, II-III functional class. 12 (48 %) patients had coronary artery disease in the form of diffuse cardiosclerosis with heart failure, arrhythmias and conduction disturbances. Essential hypertension (EH) II stage was concomitant disease in 19 (80 %) patients from 25.5 (20 %) had EH III stage. In 16 (64 %) patients from 25 were identified arrhythmias and cardiac disturbances. In 24 (96 %) patients from 25 chronic heart failure was observed. Age of the patients was 45-77 years, 17 (68 %) males and 8 (32 %) women. Examination and treatment of patients was carried out in accordance with the standards of Ukraine. The control group consisted of 32 healthy persons, 18-28 years, including 21 women and 11 men. Dermatoglyphic study was conducted by the method of fingerprinting surfaces phalanges, using paint. Statistical methods of evaluation findings included parametric and non-parametric statistical methods. The results of research. Increasing of loops and whorls of the fourth and second fingers was typical for patients with coronary heart disease. Known, these fingers are places of passage meridians of Chinese acupuncture points, including the 4th – pericardium, 2nd – heart, lungs. We have found the prevalence of whorls at 29.4 % of men with coronary artery disease, which is typical for neuro-psychological state disturbances. The predominance of ulnar loops over the radial was a characteristic feature for 88.24 % of men with coronary heart disease, while for women, such changes have been 50 %. Such dermatoglyphic changes are characteristic for those, who have a tendency to arterial hypertension. The predominance of the arcs on the fingers was typical for 11.76 % of male patients with coronary heart disease and 47.5 % for women. Conclusions. Increasing the frequency of loops and / or whorls of fourth and second fingers is the typical for patients with coronary heart disease. The predominance of whorls and / or ulnar loops in male patients with coronary heart disease, compared with an increased number of arcs in healthy individuals. Psychogenetic, stressful characteristics, especially the influence of genes A, L, W according to the data of dermatoglyphics is a prerequisite for correct diagnosis and treatment of patients with coronary heart disease, arterial hypertension, myocardial electrical instabilit