11 research outputs found
Arterial blood supply to the liver, celiac and mesenteric pool (literature review) [Артериальное кровоснабжение печени, целиако-мезентериальный бассейн (обзор литературы)]
No full textKnowledge of the variant vascular anatomy of the celiac and mesenteric basin is of paramount importance in operative interventions in the hepatopancreatobiliary zone, stomach and duodenum, liver transplantation. The article presents various classifications of vessels of the celiac and mesenteric basin, created by the authors as a result of numerous studies using various techniques. The main advantages and disadvantages of the main classifications of blood vessels are considered, the features of application in clinical practice are given. © 2021 The Author(s
2508 POSTER Pseudomyxoma Peritonei – the Role of Cytoreductive Surgery in the Combination With Fluorescental Laparoscopy and Intraperitoneal Photodynamic Therapy
No full text6078 POSTER Extended Surgery for Locally Advanced Primary and Recurrent Rectal Cancer – Experience of 30 Pelvic Exenterations
No full textBacterial communities associated with atherosclerotic plaques from Russian individuals with atherosclerosis
Get PDF© 2016 Ziganshina et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Atherosclerosis is considered a chronic disease of the arterial wall and is the major cause of severe disease and death among individuals all over the world. Some recent studies have established the presence of bacteria in atherosclerotic plaque samples and suggested their possible contribution to the development of cardiovascular disease. The main objective of this preliminary pilot study was to better understand the bacterial diversity and abundance in human atherosclerotic plaques derived from common carotid arteries of individuals with atherosclerosis (Russian nationwide group) and contribute towards the further identification of a main group of atherosclerotic plaque bacteria by 454 pyrosequencing their 16S ribosomal RNA (16S rRNA) genes. The applied approach enabled the detection of bacterial DNA in all atherosclerotic plaques. We found that distinct members of the order Burkholderiales were present at high levels in all atherosclerotic plaques obtained from patients with atherosclerosis with the genus Curvibacter being predominant in all plaque samples. Moreover, unclassified Burkholderiales as well as members of the genera Propionibacterium and Ralstonia were typically the most significant taxa for all atherosclerotic plaques. Other genera such as Burkholderia, Corynebacterium and Sediminibacterium as well as unclassified Comamonadaceae, Oxalobacteraceae, Rhodospirillaceae, Bradyrhizobiaceae and Burkholderiaceae were always found but at low relative abundances of the total 16S rRNA gene population derived from all samples. Also, we found that some bacteria found in plaque samples correlated with some clinical parameters, including total cholesterol, alanine aminotransferase and fibrinogen levels. Finally, our study indicates that some bacterial agents at least partially may be involved in affecting the development of cardiovascular disease through different mechanisms
Bacterial communities associated with atherosclerotic plaques from Russian individuals with atherosclerosis
No full text© 2016 Ziganshina et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Atherosclerosis is considered a chronic disease of the arterial wall and is the major cause of severe disease and death among individuals all over the world. Some recent studies have established the presence of bacteria in atherosclerotic plaque samples and suggested their possible contribution to the development of cardiovascular disease. The main objective of this preliminary pilot study was to better understand the bacterial diversity and abundance in human atherosclerotic plaques derived from common carotid arteries of individuals with atherosclerosis (Russian nationwide group) and contribute towards the further identification of a main group of atherosclerotic plaque bacteria by 454 pyrosequencing their 16S ribosomal RNA (16S rRNA) genes. The applied approach enabled the detection of bacterial DNA in all atherosclerotic plaques. We found that distinct members of the order Burkholderiales were present at high levels in all atherosclerotic plaques obtained from patients with atherosclerosis with the genus Curvibacter being predominant in all plaque samples. Moreover, unclassified Burkholderiales as well as members of the genera Propionibacterium and Ralstonia were typically the most significant taxa for all atherosclerotic plaques. Other genera such as Burkholderia, Corynebacterium and Sediminibacterium as well as unclassified Comamonadaceae, Oxalobacteraceae, Rhodospirillaceae, Bradyrhizobiaceae and Burkholderiaceae were always found but at low relative abundances of the total 16S rRNA gene population derived from all samples. Also, we found that some bacteria found in plaque samples correlated with some clinical parameters, including total cholesterol, alanine aminotransferase and fibrinogen levels. Finally, our study indicates that some bacterial agents at least partially may be involved in affecting the development of cardiovascular disease through different mechanisms
Сравнительный анализ доверия к себе у спортсменов различных видов спорта
Get PDFМета дослідження - виявити особливості прояву довіри до себе в кваліфікованих спортсменів різних видів спорту. Матеріали і методи. У дослідженні брали участь представники спортивних єдиноборств (n = 23), складно-координаційних (n = 25), швидкісно-силових (n = 23) та циклічних видів спорту (n = 38). Загальна вибірка склала 109 спортсменів. Вік досліджуваних 16-18 років, рівень спортивної кваліфікації - кандидат і майстер спорту. Для визначення рівня довіри до себе і виразності особистісних якостей спортсменів в роботі використано батарею психодіагностичних методик. Діагностика рівня довіри до себе здійснювалася за допомогою опитувальника Н.Астаніної, спрямованого на рефлексивний аналіз міри довіри до себе. Для вивчення особистісних якостей в роботі використовувалися: опитувальник суб’єктивного контролю Б.Бажина, Є.Голинкіна, Л.Эткінда, методика самооцінки особистості С.Будассі та опитувальник рефлексивності А.Карпова.
Результати. Зафіксовано статистично значущі відмінності у рівні прояву довіри до себе у спортсменів спортивних єдиноборств, складно-координаційних видів спорту і спортсменів циклічних і швидкісно-силових видів спорту. Встановлено, що у представників єдиноборств і складно-координаційних видів спорту рівень довіри до себе є вище за середній. Для спортсменів циклічних і швидкісно-силових видів спорту властивий середній рівень довіри до себе. Абсолютизація довіри до себе, яка призводить до зниження спортивних результатів, у досліджуваній вибірці спортсменів не була зафіксована. Емпіричним шляхом встановлено інгібуючий вплив рефлексії майбутньої діяльності на рівень довіри до себе у спортсменів. Виявлено, що самооцінка виступає тим особистісним утворенням, що актуалізує довіру до себе.
Висновки. Довіра до себе є складним конструктом, який можна усвідомлювати під час рефлексивної роботи з самим собою. Цей внутрішньоособистісній конструкт емпірично можна вимірювати. Спортивні єдиноборства та складно-координаційні види спорту за специфікою прояву довіри до себе є найбільш близькими між собою, як у свою чергу, циклічні та швидкісно-силові види спорту.The purpose of the study is to identify the features of the manifestation of self-reliance among qualified athletes of different sports. Material and methods. The study participants were representatives of combat sports (boxing) n = 23, complex-coordination (gymnastics) n = 25, speed-strength (discus throw) n = 23, and also cyclic sports (swimming) n = 38. In total there were 109 sportsmen. The age of the respondents was from 16 to 18 years old. The self-reliance level was diagnosed using the questionnaire (author Astanina) aimed at reflective analysis of self-reliance measures. To study the personal qualities in the work the questionnaire of subjective control (by Bazhina, Golynkina, Etkind), the method of self-assessment of personality (by Budassi), and the questionnaire of self-reflection (by Karpova) were used.
Results. There were recorded statistically significant differences in the level of self-reliance among representatives of combat sports, complex-coordination sports and cyclical and speed-strength sports athletes. It has been established that the level of trust in oneself is higher than average for representatives of combat sports and complex-coordinating sports. Representatives of cyclical and speed-strength sports are characterized by an average level of confidence in themselves. The absolutization of self-reliance, which leads to a decrease in athletic performance, was not recorded in this sample of athletes. Empirically, the inhibitory effect of future activity reflection on the level of self-reliance among athletes has been established. Self-esteem is a personal education that actualizes self-reliance.
Conclusions. Self-reliance is a complex construct that can be recognized in reflective work with oneself. This inner personality construct can be empirically measured. Combat sports and complex-coordinated sports according to the specifics of self-reliance are the closest to each other, like cyclical and speed-strength typesЦель исследования - выявить особенности проявления доверия к себе у квалифицированных спортсменов различных видов спорта. Материалы и методы. В исследовании приняли участие представители спортивных единоборств (n=23), сложно-координационных (n=25), скоростно-силовых (n=23) и циклических видов спорта (n=38). Общая выборка составила 109 спортсменов. Возраст испытуемых 16-18 лет, уровень спортивной квалификации – кандидат и мастер спорта. Для определения уровня доверия к себе и выраженности личностных качеств спортсменов в работе использована батарея психодиагностических методик. Диагностика уровня доверия к себе осуществлялась с помощью опросника Н.Астаниной, направленного на рефлексивный анализ меры доверия к себе. Для изучения личностных качеств в работе использованы: опросник субъективного контроля Б.Бажина, Е.Голынкина, Л.Эткинда, методика самооценка личности С.Будасси и опросник рефлексивности А.Карпова.
Результаты. Зафиксированы статистически значимые различия в уровне проявления доверия к себе у представителей спортивных единоборств, сложно-координационных видов спорта и спортсменов циклических и скоростно-силовых видов спорта. Установлено, что представителям спортивных единоборств и сложно-координационных видов спорта присущ уровень доверия к себе выше среднего. Для представителей циклических и скоростно-силовых видов спорта характерен средний уровень доверия к себе. Абсолютизация доверия к себе, которая приводит к снижению спортивных результатов, в данной выборке спортсменов не была зафиксирована. Эмпирическим путем установлено ингибирующее влияние рефлексии будущей деятельности на уровень доверия к себе у спортсменов. Установлено, что самооценка выступает личностным образованием, актуализирующим доверие к себе.
Выводы. Доверие к себе является сложным конструктом, который можно осознавать в рефлексивной работе с самим собой. Этот внутри личностный конструкт эмпирически можно измерить. Спортивные единоборства и сложно-координационные виды спорта по специфике проявления доверия к себе являются наиболее близки между собой, как в свою очередь, циклические и скоростно-силовые вид
Volcanic cooling signal in tree ring temperature records for the past millennium
Get PDFThe authors acknowledge the National Science Foundation for funding much of the research presented herein. RW's Scottish work is currently funded through the UK Leverhulme Trust and Natural Environment Research Council (NERC) projects, “RELiC: Reconstructing 8000 years of Environmental and Landscape change in the Cairngorms (F/00 268/BG)” and “SCOT2K: Reconstructing 2000 years of Scottish climate from tree rings (NE/K003097/1).”Tree rings are an important proxy for understanding the timing and environmental consequences of volcanic eruptions as they are precisely dated at annual resolution and, particularly in tree line regions of the world, sensitive to cold extremes that can result from climatically significant volcanic episodes. Volcanic signals have been detected in ring widths and by the presence of frost-damaged rings, yet are often most clearly and quantitatively represented within maximum latewood density series. Ring width and density reconstructions provide quantitative information for inferring the variability and sensitivity of the Earth's climate system on local to hemispheric scales. After a century of dendrochronological science, there is no evidence, as recently theorized, that volcanic or other adverse events cause such severely cold conditions near latitudinal tree line that rings might be missing in all trees at a given site in a volcanic year (stand-wide missing rings), resulting in misdating of the chronology. Rather, there is a clear indication of precise dating and development of rings in at least some trees at any given site, even under adverse cold conditions, based on both actual tree ring observations and modeling analyses. The muted evidence for volcanic cooling in large-scale temperature reconstructions based at least partly on ring widths reflects several factors that are completely unrelated to any misdating. These include biological persistence of such records, as well as varying spatial patterns of response of the climate system to volcanic events, such that regional cooling, particularly for ring widths rather than density, can be masked in the large-scale reconstruction average.Peer reviewe
Permafrost-Region Lake-DOC version1 Database (PeRL-DOCv1)
No full textThe pan-Arctic Permafrost-Region Lake-DOC version1 database contains surface water samples of lakes in the permafrost regions of Alaska (49.3 %), Canada (24.2 %), Greenland (3.2 %) and Siberia (23.3 %). It includes concentrations of dissolved organic carbon (DOC) for each of the 1,833 lakes of our synthesis dataset. The lakes of the dataset are located in permafrost regions between 59.2° and 82.5° northern latitude and were sampled between the years 1979 and 2017. We synthesised published datasets and unpublished samples from the author team.
We assigned the following information to each lake using existing secondary environmental parameter datasets:
- permafrost zone (Brown et al., 1997; Jorgenson et al., 2008),
- ecoregion (Olson et al., 2004),
- deposit type (Fulton, 1995; Nielsen, 2010; Petrov et al., 2014; Strauss et al., 2016),
- ground ice content (Brown et al., 1997; Jorgenson et al., 2008), and
- soil organic carbon content (Hugelius et al., 2014).
The lakes cover the full range of permafrost extent from the isolated permafrost to continuous permafrost zone. They are located in the boreal forest ecoregion, in the tundra ecoregion and in the boreal-tundra transition zone. For a regionalization we subdivided the data into 13 study areas (22 sites)
Реконструкция среднеянварской температуры воздуха в раннем голоцене на восточном побережье Чукотки
Get PDFThe investigation is concerned with the Early Holocene syngenetic massive wedge ice exposed in the outcrop of a polygonal peatland in the upper part of the third marine terrace near Lorino settlement on the eastern coast of Chukotka. Based on the obtained radiocarbon dates of peat, it was found that the formation of a peatland in the area began about 14–13 cal ka BP, at the end of the Younger Dryas, while the termination of the active stage of peat accumulation was dated to about 10–9 cal ka BP. The beginning of peat accumulation at the end of the Younger Dryas, earlier the officially accepted limit of the lower boundary of the Holocene (11.7 cal ka BP), and the termination of its formation by the middle of the Greenlandian Holocene period is not a rare phenomenon in Russian permafrost zone, although it is traditionally assumed that the most active formation of peatlands has been going on during the thermal maximum in the middle of the Holocene. The age inversions noted in the peat vertical profiles are the most likely indicative of the processes of re-deposition of ancient organic material due to erosion by water of the third marine terrace sediments and the separation of the allochthonous peat. During the period from 2015 to 2021, six fragments of peatland exposures with the ice wedges were studied. Analysis of the obtained data on the content of stable oxygen isotopes in the ice show that δ18О values vary within the range from –15.5 to –18‰. These values are in good agreement with the data for Early Holocene ice wedges earlier obtained in other areas of the eastern coast of Chukotka (Anadyr town, Uelen settlement), where authors report the δ18O values from –16 to –19.4‰. This suggests that the ice wedge growth as well as the peat accumulation were the most active in Early Holocene. The highest δ18О values (from –13.1 to –16.8‰) were obtained for the modern ice veinlets. The ratio δ2 H–δ18O in the ice wedges, in general, is indicative of a good preservation of isotope signature of winter precipitation. It has been found that approximate mean January air temperature in the Early Greenlandian period varied from –23 to –27°С, which is, on average, 3°С below than the present-day ones.Формирование полигонального торфяника на поверхности третьей морской террасы в районе села Лорино на восточном побережье Чукотки началось в конце позднего дриаса и завершилось в начале голоцена. Среднеянварская температура воздуха в первой половине гренландского периода голоцена, реконструированная на основе данных изотопного состава повторно-жильных льдов, возраст которых не моложе 10–9 тыс. кал. лет назад, в среднем на 3°С ниже современной и варьировала от –23 до –27°С
Цифровой томосинтез и другие методы визуализации в ранней диагностике аксиальных спондилоартритов: обзор литературы
Get PDFINTRODUCTION: Spondyloarthritis (SpA) take one of the leading positions among rheumatic diseases, constituting chronic inflammatory diseases of spinal cord, joints and enthesis. All spondyloarthritis develop as inflammatory lesion of sacroiliac joints (SIJ) — sacroiliitis and proliferation of bone tissues in the joint area and enthesis. Timely and quality visualization of sacroiliitis signs in patients with ankylosing and axial spondyloarthritis by means of radiation diagnostics is one of the main criteria for diagnosis verification at an earlier stage.OBJECTIVE: Review and analysis of the existing foreign and domestic literature for defining the role and place of digital tomosynthesis in methods and techniques of radiation diagnostics regarding axial spondyloarthritis.MATERIALS AND METHODS: A search of scientifiс publications and clinic guidelines in information and analytical systems PudMed (elibrary for 2015–2021) was carries out dedicated to radiation diagnostics of axial spondyloarthritis, including digital tomosynthesis.RESULTS: The review demonstrated wide opportunities and prospects of applying digital tomosynthesis in diagnosis and evaluation of axial spondyloarthritis progression, including the results of applying tomosynthesis with patients, having structural change in sacroiliac joints (SIJ).CONCLUSION: The method opportunity in this direction hasn’t been fully studied and the algorithm of its applying and criteria of patient selection for the research have not been developed.ВВЕДЕНИЕ: Среди ревматических заболеваний одно из лидирующих мест занимают спондилоартриты (СпА), которые представляют собой группу хронических воспалительных заболеваний позвоночника, суставов и энтезисов. Все спондилоартриты проявляются воспалительным поражением крестцово-подвздошных сочленений (КПС) — сакроилиитом и пролиферацией костной ткани в области суставов и энтезисов. Своевременная и качественная визуализация признаков сакроилиита методами лучевой диагностики у пациентов с анкилозирующим и аксиальным спондилоартритами является однимиз главных критериев для верификации диагноза на ранней стадии.ЦЕЛЬ: обзор и анализ имеющейся иностранной и отечественной литературы для определения роли и места цифрового томосинтеза в системе методов и методик лучевой диагностики аксиальных спондилоартритов.МАТЕРИАЛЫ И МЕТОДЫ: Проведен поиск научных публикаций и клинических рекомендаций в информационно-аналитических системах PudMed, elibrary за 2015–2021 гг., посвященных лучевой диагностике аксиальных спондилоартритов, в том числе цифровому томосинтезу.РЕЗУЛЬТАТЫ: Представленный обзор продемонстрировал широкие возможности и перспективы применения цифрового томосинтеза при диагностике и оценке прогрессирования аксиальных спондилоартритов, в том числе результаты применения томосинтеза у пациентов со структурными изменениями крестцо-подвздошных сочленений.ЗАКЛЮЧЕНИЕ: Возможности методики в данном направлении до конца не изучены, а алгоритм ее применения и критерии для отбора пациентов на исследование в настоящее время не разработаны
