Изменение климата и теплообмен между атмосферой и океаном в Арктике на примере Баренцева и Карского морей

The paper investigates the current regime of turbulent heat exchange with the atmosphere over the Barents and Kara Seas, as well as its spatial, seasonal and temporal variability (1979–2018). It is shown that over the past decades, the areas of the location of the centers of maximum energy exchange between the sea surface and the atmosphere have not changed significantly in comparison with the middle and second half of the XX century. It was revealed that the greatest seasonal and synoptic variability of heat fluxes is typical of the central and western parts of the Barents Sea. It was found that both indicators of variability in the cold season are 2–5 and more times higher than in the warm season, and the spatial heterogeneity of the indicators of variability in winter is about twice as large as in summer. Quantitative estimates have shown that, within the Barents Sea, the spatial variability of fluxes in winter may be 5–10 times or more higher than the summer values. Above the Kara Sea, the greatest heterogeneity in the fluxes field is typical of the autumn and early winter seasons. It has been found that the annual sums of heat fluxes from the surface of the Barents Sea exceed the values for the Kara Sea, on average, 3–4 and 5–6 times, for sensible and latent heat fluxes, respectively, and in some years may differ tens of times. For the period under study, a single trend of the integral fluxes over the water area and their annual magnitude is not expressed, although there are multi-year decadal fluctuations. It is shown that, despite the significant difference in the thermal regime of the Barents and Kara seas and the lower atmosphere above them, the interannual changes in the total turbulent flows are quite well synchronized, which indicates the commonality of large-scale hydrometeorological processes in these seas, which affect the energy exchange between the seas and the atmosphere.Исследована современная пространственная структура очагов турбулентного теплообмена над Баренцевым и Карским морями, в последние десятилетия она не претерпела существенных изменений по сравнению с серединой и второй половиной XX в. Показано, что в пределах акватории Баренцева моря пространственная изменчивость зимой в 5–10 и более раз может превышать летние значения. Определено, что годовые суммы потоков тепла с поверхности Баренцева моря в среднем в 3–4 и в 5–6 раз, для потоков Н и LE соответственно, превышают значения для Карского моря, а в отдельные годы могут различаться в десятки раз.Показано, что за период 1979–2018 гг. однонаправленные изменения незначительны, но значимы декадные колебания. Выявлено, что многолетние изменения суммарных турбулентных потоков над акваториями Баренцева и Карского морей довольно хорошо синхронизированы, что свидетельствует об общности крупномасштабных гидрометеорологических процессов. Наибольшая реакция полей потоков тепла на изменения атмосферы характерна для изменений индексов NAO и SCAND, и их максимум локализован в районе Мурманского и Нордкапского течений. В летнее время аномалии полей всех величин выражены крайне слабо

PLM-COMPETENCE FORMATION USING COMPUTATIONAL-GRAPHICAL PRACTICE

The description of a new kind of learning activity “Computational - graphical practice” is presented. This practice aimed at consolidating the knowledge and skills acquired by students in the study of the basic engineering disciplines and bridge the gap in the training of students in the field of PLM-technology. The goals, objectives, program practices and competencies, which should have a student after passing the training practice, are liste

Concurrent Thermochemoradiotherapy in Glioblastoma Treatment: Preliminary Results

Glioblastoma is the most frequent and aggressive primary brain tumor. The patient can be alive with this pathology using the modern standard of intensive combined treatment less than 2 years. Between December 2013 and August 2017, 30 patients with newly diagnosed supratentorial glioblastoma had received concomitant chemoradiotherapy with transcranial radiofrequency hyperthermia. The gross total or the subtotal resection of the tumor was made previously in all cases. The median follow-up time after operation achieved 12 months (95% confidence interval (CI): 8.5–23 months) in this study. The median disease-free survival time was 9.6 months (95% CI: 7.2–19.0 months). The median overall survival time of patients included in the study was 23.4 months. No increase in the systemic side effects of chemotherapy was found compared with the frequency described in the population. Preliminary results had shown that the usage of concomitant thermochemoradiotherapy with transcranial radiofrequency hyperthermia improves progression-free survival rates. Overall survival rates also tended to increase. Given the absence of severe complications, it is necessary to continue research to achieve statistically significant results

Psychosocial aspects of the usage of modern technologies in diabetes mellitus

This article represents a review of trials on the relationship between the use of modern technologies in the treatment of diabetes, such as continuous subcutaneous insulin infusion (CSII) and continuous glucose monitoring (CGM), and the psychological characteristics of patients. The review includes Russian studies and foreign publications. The analysis showed that the psychological aspects of using CSII are considered more often than CGM. Most Russian authors agree that the use of technology is associated with an increased psychological well-being of patients. Foreign researchers generally agree with the same point of view but also report a weaker correlation. One of the most significant conclusions of this analysis is that the use of modern technologies itself does not guarantee an improved quality of life (QOL) and psychological well-being, but technologies such as CSII and CGM provide patients with opportunities to achieve greater effectiveness in treating diabetes, improving clinical and metabolic parameters and therefore improving QOL. However, the use of these devices, as well as many other technological tools, is associated with certain psychological problems, both in terms of their acquisition and influence on patients’ subjective well-being. Early diagnosis and prevention of such problems should be one of the tasks in preparing patients for the use of modern technologies. A positive effect on both clinical and metabolic indicators as well as on the mental sphere and social life of patients can be achieved only by combining complete training (optimally—according to specialised programmes) with medical support

Features of morphological and ultrastructural organization of the cornea (literature review)

The human cornea – the anterior fibrous membrane of the eye, is a unique ordered optical-biological system that is avascular, saturated with nerve endings, includes tissue-specific cells, consists mainly of various types of collagen. An exceptional feature of the collagen layers of the cornea, including the collagen plates of the stroma, is transparency, which provides physiological refraction and light transmission due to the stable supporting properties of the cornea. The data on the morphological structure of the cornea, which is an important element of the optical system of the eye, are of considerable interest not only from theoretical, but also from practical positions. This is due to the fact that the identification of the first signs of deviation from normal physiological morphological and ultrastructural criteria in the cornea allows us to establish the nature of its pathological changes, which can be caused by both hereditary predisposition and local and general disorders. It has been shown that the thinning of the layers of the cornea, a decrease in the density of endotheliocytes or keratocytes signal the development of dystrophic processes in it. In addition to evaluating quantitative morphometric data, changes in qualitative ultrastructural indicators play an important role. In particular it was found that a decrease in the density of endothelial cells is accompanied by an increase in their size and a decrease in the cell nucleus. In addition, a number of degenerative pathological conditions are characterized by a decrease in the diameter of collagen fibrils and a change in the density of fibrillary packaging.This literature review presents basic information, features of morphology, ultrastructural organization and functional purpose of layers and cells of the human cornea

Маркеры активности экзогенных интерстициальных заболеваний легких

The aim of this study was to investigate values of pulmonary fibrosis markers alveomucin and KL-16 and the airway damage marker CC-16 for evaluating activity and progressing of extrinsic interstitial lung diseases (ILD) in dependence on etiology. Methods. Levels of Krebs von den Lungen-6 glycoprotein (KL-6), alveomucin and Clara cell protein (CC16) were measured using the ELISA method. The study involved 13 patients with pneumoconiosis, 26 patients with extrinsic allergic alveolitis (EAA) and 20 patients with extrinsic toxic alveolitis (ETA) both in active and stable status. Results. KL-6 and alveomucin were found to be more valuable markers for assessing activity of extrinsic fibrosing alveolitis compared to CC16. Alveomucin had higher specificity but lower sensitivity compared to KL-6. Conclusion. Alveomucin could be used as a screening test in cases with clinical susceptibility for extrinsic alveolitis. On contrary, KL-6 and alveomucin could be used for assessing therapeutic efficacy of EAA and ETA.Уровень гликопротеина Krebs von den Lungen-6 (KL-6), альвеоломуцина и белка булавчатых клеток (club cells) – СС16 при экзогенных интерстициальных заболеваниях легких был исследован методом иммуноферментного анализа. Обследованы больные пневмокониозом (n = 13), экзогенным аллергическим (n = 26) и экзогенным токсическим (n = 20) альвеолитом в период активности и ремиссии заболевания. Установлено, что KL-6 и альвеоломуцин являются более информативными маркерами для оценки активности экзогенных фиброзирующих альвеолитов по сравнению с СС16. Альвеоломуцин обладает более высокой специфичностью, но меньшей чувствительностью, чем KL-6, и может применяться для скринингового исследования при подозрении на экзогенные альвеолиты. Для оценки эффективности терапии экзогенных аллергических и токсических альвеолитов целесообразно мониторировать уровень KL-6 и альвеоломуцина сыворотки крови

Efficiency of radiotherapy during local hyperthermia in the treatment of laryngeal and laryngopharyngeal cancer

Cancer of the larynx and laryngopharynx, which is accessible to visual and instrumental examination, remains the most relevant and complicated problem among head and neck malignances as before. Investigations show that the incidence of cancer at these sites in Russia in the last decade has risen from 4.5 to 9.67 %. This is a severe and poor prognostic form of cancer, which is characterized by its nonspecific early clinical manifestations, complex anatomic and topographic structure, and a high rate of regional metastases. The mainstay of treatment for head and neck cancer involves 3 components: surgery, chemotherapy, and radiotherapy (RT), which are performed alone or in combination. The most commonly used technique is combined, frequently crippling due to organ-removing operations. The clinical introduction of current radio modifiers, local and deep hyperthermia systems, is a promising approach to improving the results of treatment, to enhancing the radiation damage of RT, and to achieving the tumor regression sufficient for surgical intervention without augmenting the early and late toxicity inherent in chemoradiation treatment. The results of the performed study of 35 patients with T2–3N0–2M0 laryngeal and laryngopharyngeal cancer proved the high efficiency of local hyperthermia in treating malignancies in this region during both preoperative (grades III– IV therapeutic pathomorphism) and radical beam RT

Resolution on the results of the First All-Russian Forum "Therapeutic Education in Endocrinology"

According to the decision of the WHO, therapeutic education (TE) of patients is an independent branch of medicine and an essential component of the treatment of chronic diseases, primarily diabetes mellitus and obesity. TE is implemented through the creation of “Schools for patients with diabetes mellitus” and “Schools for patients with overweight” (“Schools”) as a structural unit of a medical institution. On April 25–26, 2022, the First All-Russian Forum «Therapeutic Education in Endocrinology» was held online, organized by the Public Organization «Russian Association of Endocrinologists», which was attended by leading experts in this field. As a result of its work, this Resolution was adopted by the experts. It discusses the methodological and pedagogical foundations of TE, it is proposed to make changes related to the organization of the work of «Schools», tariffing in the obligatory health insurance system, and training of personnel, including nurses

Характеристика генома Mycobacterium tuberculosis генотипа Beijing кластера 100-32 с пре-широкой лекарственной устойчивостью

A whole genome sequencing was performed of strain M. tuberculosis 11502 (NCBI biosamples database, access code SAMN17832565) that was assigned to the Beijing genotype subtype B0/W148 of cluster 100-32, based on the MIRU- VNTR loci (n = 24) structure, a nd t hat exhibited pre-extended d rug resistance. M. tuberculosis 11502 was resistant to isoniazid, rifampicin, ethambutol, levofloxacin, and ethionamide, which correlated with the presence of mutations in the genes: resistance to isoniazid – the mutations in the fabG1 promoter (p.-8T>C), the katG promoter (p.S315T), to ethionamide – the mutations in ethA (deletion of T at position 4 335 027 (gatgc-gagc)); to fluoroquinolones – in the gyrA gene (p.D94G); to ethambutol – in the embB gene (p.M306I); to streptomycin – in the rpsL gene (p.K43R). M. tuberculosis 11502 genome (Gen- Bank NCBI access code – CP070338) contained 4 420 561 base pairs, 4 104 genes, 4 053 CDSs (coding proteins – 3 874) and differed from reference strain M. tuberculosis H37Rv by the presence of 2 055 mutations. A slight drift of mutations towards the G+C accumulation was revealed, which indicates the importance of maintaining a high G+C content in the Mycobacterium spp.genome Strain M. tuberculosis 11502 has a higher number of mutations in comparison to previously sequenced M. tuberculosis 4860 (GenBank Access Code, NCBI: CP053092) belonging to the LAM genotype (2055 vs. 1577 mutations), which may be a consequence of a longer circulation of M. tuberculosis 11502, or some biological features providing the promutagenic effect.Проведено полногеномное секвенирование штамма М. tuberculosis 11502 (база биообразцов NCBI, код доступа SAMN17832565), отнесенного, на основании структуры MIRU-VNTR локусов (n = 24), к генотипу Beijing подтипу B0/W148 кластеру 100-32 и проявлявшего пре-широкую лекарственную устойчивость. Штамм М. tuberculosis 11502 был резистентен к изониазиду, рифампицину, этамбутолу, левофлоксацину, этионамиду, что коррелировало с присутствием в резистоме мутаций в соответствующих генах: к рифампицину – мутации в генах rpoB (p.S450L), rpoC (p.I491T), к изониазиду – в промоторе гена fabG1 (g.-8T>C), промоторе katG (p.S315T), к этионамиду – в ethA (делеция Т в положении 4 335 027 (gatgc-gagc)); к фторхинолонам – в гене gyrA (p.D94G); к этамбутолу – в embB (p.M306I), к стрептомицину – в rpsL (p.K43R). Геном М. tuberculosis 11502 (код доступа GenBank NCBI – CP070338) содержит 4 420 561 пару оснований, 4 104 гена, 4 053 кодирующие последовательности (кодирующие белки – 3 874) и отличается от референтного штамма М. tuberculosis H37Rv присутствием 2 055 мутаций, при этом зарегистрирован незначительный дрейф мутаций в сторону накопления G+C, что свидетельствует о важности поддержания высокого содержания G+C в геноме микобактерий. Геном М. tuberculosis 11502 имеет большее количество мутаций в сравнении с ранее секвенированным штаммом М. tuberculosis 4860 (код доступа в GenBank, NCBI: CP053092.1), относящимся к генотипу LAM (2055 против 1577 мутаций), что может быть результатом более длительной или более активной циркуляции М. tuberculosis 11502, или существования биологических особенностей, обеспечивающих промутагенный эффект

Частичная и полная спонтанная регрессия семиномы яичка: клинические наблюдения

Spontaneous tumour regression is a rare phenomenon in which there is a complete or partial regression of the primary tumour, clinically manifested by metastatic lesions. We report a case of a 34-year-old male with partial spontaneous regression of testicular seminoma detected by a supraclavicular lymph node biopsy. He underwent inguinal orchifunicolectomy. Based on the results of histological examination, against the background of multiple complexes of intratubular germ cell neoplasia in situ, foci of invasive growth and involution were identified, indicating a spontaneously regressing testicular tumour. We report the second case of a 52-year-old male with total spontaneous regression of testicular seminoma detected by a spermatic cord biopsy. Based on the results of histological examination, against fibrosis and proliferation of Leydig cells, there are atrophy of seminiferous tubules and complexes of intratubular germ cell neoplasia in situ in part of them.Спонтанная регрессия опухоли – редкое явление, при котором происходит полная или частичная регрессия первичной опухоли, клинически проявляющееся метастатическими поражениями. В статье описаны 2 клинических случая. В 1-м наблюдении частичная спонтанная регрессия семиномы яичка выявлена при биопсии надключичного лимфатического узла. У 34-летнего мужчины была проведена паховая орхифуникулэктомия. По результатам гистологического исследования на фоне множественных комплексов внутриканальцевой герминогенно-клеточной неоплазии  in situ выявлены небольшие очаги инвазивного роста и инволюции, указывающие на спонтанно регрессировавшую опухоль яичка. Во 2-м клиническом случае полная спонтанная регрессия семиномы яичка выявлена при биопсии образования пахового канатика у пациента 52 лет. По результатам гистологического исследования операционного материала, полученного при паховой орхифуникулэктомии, в ткани яичка на фоне выраженного фиброза стромы с пролиферацией клеток Лейдига отмечались атрофичные семенные канальцы, в части которых имелись комплексы внутриканальцевой герминогенно-клеточной неоплазии in situ