Internal combustion engine sensor network analysis using graph modeling

In recent years there has been a rapid development in technologies for smart monitoring applied to many different areas (e.g. building automation, photovoltaic systems, etc.). An intelligent monitoring system employs multiple sensors distributed within a network to extract useful information for decision-making. The management and the analysis of the raw data derived from the sensor network includes a number of specific challenges still unresolved, related to the different communication standards, the heterogeneous structure and the huge volume of data. In this paper we propose to apply a method based on complex network theory, to evaluate the performance of an Internal Combustion Engine. Data are gathered from the OBD sensor subset and from the emission analyzer. The method provides for the graph modeling of the sensor network, where the nodes are represented by the sensors and the edge are evaluated with non-linear statistical correlation functions applied to the time series pairs. The resulting functional graph is then analyzed with the topological metrics of the network, to define characteristic proprieties representing useful indicator for the maintenance and diagnosis

tPCS as a method for correcting cardiac arrhythmias after percutaneous transluminal coronary angioplasty with stenting in patients with myocardial infarction

Objective: To study the effect of transcranial pulsed current stimulation (tPCS) therapy on cardiac arrhythmias developed after percutaneous transluminal coronary angioplasty (PTCA) with stenting in patients with myocardial infarction (MI).Material and methods: Characteristics of patient groups: the comparison group (n = 17) – with myocardial infarction, after PTCA with stenting, standard treatment; the main group (n = 21) – the same and tPCS therapy. Control points of the study: 1st day – Electrocardiography (ECG), Echocardiography (ECHO), Creatine phosphokinase (CPK), Creatine phosphokinase-MB (CPK-MB), Troponin-I, potassium, β-endorphin; 5th day – the same without ECHO; 10th day – the same and ECG with the determination of harmony and quantum of the electromagnetic flux of the cardiac cycle. PTCA was performed using drug-eluting stents. tPCS therapy was performed in pulsed bipolar mode, current strength 2 mA, current frequency 77.5 Hz, session duration 45 min.Results: In patients of the main group (against the background of tPCS therapy), the studied parameters of the cardiac cycle approached the optimal values. It was shown that intergroup differences in harmony (p = 0.002) and the size of the electromagnetic flux quantum of the cardiac cycle (p = 0.001) are statistically significant. Also, against the background of the tPCS therapy, the concentration of highly sensitive troponin-I is statistically significantly (p = 0.0042) lower by 109%. On the 5th and 10th days of the study, the serum concentration of β-endorphin in the main group was higher by 38.3 and 35.0% than in the comparison group (p < 0.05).Conclusion: The results of the study clearly demonstrate the cardioprotective and antiarrhythmic potential of tPCS therapy in patients with myocardial infarction and cardiac arrhythmias after PTCA with stenting

Capsule Endoscopy for the Diagnosis of Suspected Small Bowel Bleeding

This review discusses the role of capsule endoscopy in diagnosing suspected small bowel bleeding and compares guidelines of the European Society of Gastrointestinal Endoscopy (ESGE), the American College of Gastroenterology (ACG), the American Society for Gastrointestinal Endoscopy (ASGE), the Canadian Association of Gastroenterology (CAG), and the consensus document of 4 Japanese medical societies. European and North American experts recommend capsule endoscopy as a first-line diagnostic modality for suspected small bowel bleeding without life-threatening signs in adult patients when ileocolonoscopy and esophagogastroduodenoscopy failed to be informative. Japanese experts, on the contrary, prefer cross-sectional imaging “from the chest to the pelvis” and consider capsule endoscopy as an alternative

Taphonomic phenomenon of ancient hair from Glacial Beringia:perspectives for palaeoecological reconstructions

An accumulation of mammoth hair, discovered in the Bol'shaya Chukochya River valley (northeast Yakutia, Russia), was found to contain remains of terrestrial and aquatic organisms, including plants, insects, crustaceans, birds and mammals. Radiocarbon dating indicated that this post-mortem taphocoenosis represented multiple time periods. The mammoth hair was dated to older than 45 ka BP, the plants were dated to 12 750 +/- 50 a BP (which corresponds to a shift in the environmental conditions and landscapes during the formation of thermokarst in northeastern Russia) and the bird feathers were dated to 4115 +/- 40 a BP. A scenario of the formation of this fossil assemblage is proposed, covering the MIS 3-1 time range. The hair also yielded various Arctic branchiopod crustaceans, which inhabit shallow temporary water bodies and therefore are important for reconstruction of palaeoenvironments. The cladoceran subgenus Daphnia (Ctenodaphnia), currently absent from the Asian part of Beringia, is reported from this region for the first time. The study demonstrates that the discovered permafrostpreserved hair is a unique repository of Ice Age organisms.</p

ВЛИЯНИЕ ХРОНИЧЕСКОЙ АРТЕРИАЛЬНОЙ ГИПЕРТЕНЗИИ НА КЛИНИЧЕСКУЮ И МЕТАБОЛИЧЕСКУЮ АДАПТАЦИЮ НОВОРОЖДЕННЫХ

Aim. To assess the impact of chronic arterial hyper-tension on clinical and metabolic adaptation of fullterm newborns.Methods. 65 full-term neonates born to women with chronic arterial hypertension were included in the study. 42 neonates born to women with arterial hypertension stage I were enrolled into Group 1, and 23 neonates born to mothers with arterial hypertension stage II         were included in Group 2. Levels of renin, angiotensin II, aldosterone, natriuretic peptides, endothelin-1 in umbilical cord blood and peripheral blood were measured with the ELISA. Stable nitric oxide metabolites levels were measured using the Griess assay.Results. Chronic high blood pressure during pregnancy has been found to affect fetal central nervous system and cardiovascular system. Early neonatal period in infants of women with chronic arterial hypertension is associated with a high incidence of perinatal CNS injury, continuing with little change during the first three months of life. The features of the cardiovascular system in neonates of women with arterial hypertension stage II include hypertension and tachycardia at birth, violation of atrioventricular conduction on the first three days of life, open patent foramen ovale up to the first three months of life, whereas neonates born to women with arterial hyper-tension stage I have hypotension on the first day of life. Elevated levels of angiotensin II in neonates born to women with chronic arterial hypertension at birth and reduced levels of endogenous nitrite in the first three months of life suggest the activation of the renin-angiotensin-aldosterone system in the antenatal period, which may cause endothelial dysfunction in early infancy.Conclusions.1.            Chronic high blood pressure in pregnancy is as-sociated with perinatal CNS damage in the newborn, continued during the first three months of life.2.            Stage 1 of hypertension in pregnancy associated with hypotension in newborns on the first day of life; and stage 2 of hypertension in pregnancy associated with hypertension and tachycardia newborn at birth, a violation of his atrioventricular conduction on the 3rd day of life and preservation until the age of three open oval window.3.            Chronic high blood pressure in pregnancy is as-sociated with an increase in cord blood levels of angiotensin II decrease in peripheral blood concentration of endogenous nitrite in the age of three months.Цель. Оценка влияния хронической артериальной гипертензии (АГ) на клиническую и метаболическую адаптацию доношенных новорожденных детей.Материалы и методы. Проведено обследование 65 доношенных детей, родившихся от женщин с хронической артериальной гипертензией (ХАГ), из них: 42 ребенка от женщин с АГ I степени 1-я группа, 23 ребенка от матерей с АГ II степени 2-я группа. Содержание ренина, ангиотензина II, альдостерона, натрийуретических пептидов, эндотелина-1 в пуповинной и периферической крови определяли методом иммуноферментного анализа, стабильных метаболитов оксида азота методом Грисса.Результаты. Установлено, что хроническое повы-шение артериального давления во время беременности оказывает непосредственное влияние на центральную нервную и сердечно-сосудистую систему плода. В раннем неонатальном периоде у детей от женщин с хронической артериальной гипертензией, имеет место высокая частота перинатального поражения ЦНС, сохраняющаяся на протяжении первых трёх месяцев жизни. Особенностями состояния сердечно-сосудистой системы у детей от женщин с АГ II степени являются: гипертензия и тахикардия при рождении, нарушение атриовентрикулярной проводимости на 3-и сутки жизни, сохранение до 3-месячного возраста открытого овального окна; у детей от женщин с АГ I степени артериальная гипотензия на первые сутки жизни. Выявленное повышение уровня ангиотензина II у детей от женщин с хронической АГ при рождении и снижение к 3-м месяцам жизни кон-центрации эндогенного нитрита, свидетельствуют об активации ренин-ангиотензин-альдостероновой системы в антенатальном периоде, что впоследствии может привести к нарушению функционального со-стояния эндотелия в младенческом возрасте.Выводы.1.            Хроническое повышение артериального давления во время беременности ассоциировано с пе-ринатальным поражением ЦНС у новорожденного, сохраняющимся на протяжении первых трёх месяцев жизни.2.            Артериальная гипертензия беременных I степени ассоциирована с артериальной гипотензией новорожденных на первые сутки жизни; а арте-риальная гипертензия беременных II степени ас-социирована с гипертензией и тахикардией но-ворожденного при рождении, нарушением у него атриовентрикулярной проводимости на 3-и сутки жизни и сохранением до трехмесячного возраста открытого овального окна.3.            Хроническое повышение артериального давления во время беременности ассоциировано с повышением в пуповинной крови уровня ангиотензина II      и снижением в периферической крови концентрации эндогенного нитрита в трехмесячном возрасте

Биогеохимия мерзлых толщ арктического побережья полуострова Гыдан

Biogeochemistry of permanently frozen deposits on the arctic shore of Gydan peninsula Core drilling was performed in four regions of arctic shore on Gydan peninsula. Complex laboratory analysis of cores allowed to characterize biochemistry of Gydan permafrost. These results are compared with data from other permafrost provinces and are applied for paleoreconstructions.В четырех районах арктического побережья полуострова Гыдан проведено колонковое бурение и отобраны керны мерзлых отложений. Комплекс лабораторных анализов впервые позволил дать биогеохимическую характеристику мерзлых толщ на Гыдане, сравнить полученные результаты с другими районами криолитозоны и применить их для палеореконструкций

The Eurasian Modern Pollen Database (EMPD), version 2

The Eurasian (née European) Modern Pollen Database (EMPD) was established in 2013 to provide a public database of high-quality modern pollen surface samples to help support studies of past climate, land cover, and land use using fossil pollen. The EMPD is part of, and complementary to, the European Pollen Database (EPD) which contains data on fossil pollen found in Late Quaternary sedimentary archives throughout the Eurasian region. The EPD is in turn part of the rapidly growing Neotoma database, which is now the primary home for global palaeoecological data. This paper describes version 2 of the EMPD in which the number of samples held in the database has been increased by 60 % from 4826 to 8134. Much of the improvement in data coverage has come from northern Asia, and the database has consequently been renamed the Eurasian Modern Pollen Database to reflect this geographical enlargement. The EMPD can be viewed online using a dedicated map-based viewer at https://empd2.github.io and downloaded in a variety of file formats at https://doi.pangaea.de/10.1594/PANGAEA.909130 (Chevalier et al., 2019)Swiss National Science Foundation | Ref. 200021_16959

The Eurasian Modern Pollen Database (EMPD), version 2

The Eurasian (nee European) Modern Pollen Database (EMPD) was established in 2013 to provide a public database of high-quality modern pollen surface samples to help support studies of past climate, land cover, and land use using fossil pollen. The EMPD is part of, and complementary to, the European Pollen Database (EPD) which contains data on fossil pollen found in Late Quaternary sedimentary archives throughout the Eurasian region. The EPD is in turn part of the rapidly growing Neotoma database, which is now the primary home for global palaeoecological data. This paper describes version 2 of the EMPD in which the number of samples held in the database has been increased by 60% from 4826 to 8134. Much of the improvement in data coverage has come from northern Asia, and the database has consequently been renamed the Eurasian Modern Pollen Database to reflect this geographical enlargement. The EMPD can be viewed online using a dedicated map-based viewer at https://empd2.github.io and downloaded in a variety of file formats at https://doi.pangaea.de/10.1594/PANGAEA.909130 (Chevalier et al., 2019).Peer reviewe