Количество страниц: 12 с.
This work reports on the methods developed by our group at ShICRA SB RAS to forecast negative manifestations of space weather from ground-based measurements of cosmic rays. Such manifestations are registered on the Earth in the form of decreases in galactic cosmic rays known as the Forbush effects, various types of geomagnetic and ionospheric disturbances, as well as auroras. Only the latters are directly visible to the naked eye, while the rest can only be detected with the help of various instruments. These occurrences are all caused by passage through the Earth’s orbit, such as the substantial influxes of charged particles from both solar and interplanetary sources, interplanetary shock waves, ejections of solar material and high-speed solar wind streams, all of which are attributed to the level of solar flares and coronal activity. The state of near-Earth space weather is determined by their presence. To monitor this state, we use data collected from ground-based cosmic ray stations and employ multiple methods to analyse these measurements. Additionally, we incorporate data from the Dst-index of the geomagnetic field and measurements of the interplanetary environmental parameters gathered by ACE, WIND, SOHO and DSCOVR spacecraft at the L1 libration point to confirm events. This has led to the development of techniques for predicting terrestrial effects of space weather in the short-term (1-3 days). Our findings suggest that it is feasible to predict the occurrence of severe geomagnetic storms in real-time through the utilisation of solely ground-based measurements from cosmic ray stations.
Прогноз возмущений солнечного ветра и геомагнитных бурь на основе наземных измерений космических лучей / А. С. Зверев, П. Ю. Гололобов, В. Г. Григорьев [и др.] ; Институт космофизических исследований и аэрономии им. Ю. Г. Шафера // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. - 2024. - Т. 21, N 1 (95). - С. 58-69. - DOI: 10.25587/2222-5404-2024-21-1-58-69
DOI: 10.25587/2222-5404-2024-21-1-58-69
Количество страниц: 8 с.
The paper presents the results of a study on the search for correct methods for measuring a high-value current pulse, which will be used to conduct research on the electroplastic effect. The electroplastic effect is the effect of electric current pulses on the plastic flow of metals. Electroplastic metal forming technology is a relatively new metal forming process that is energy efficient, environmentally friendly and versatile. In particular, it can be used to process metals or alloys that are difficult to process using conventional manufacturing processes. For the experimental study of the electroplastic effect, it became necessary to measure pulse currents of large magnitude, not only in amplitude, but also in the shape of the pulse. The pulsed current causes the formation of an alternating electromagnetic field near the conductors, so it can be measured with a Rogovsky current transformer. The results of the work present a schematic electrical diagram and a photograph with the appearance of an experimental installation for the study of the electroplastic effect. The results of measurements of the current value, the voltage drop on the sample and the dependence of the peak voltage values on the sample on the peak current value are shown. After making calculations and renormalising the data for the voltage drop on the sample according to the peak value of the current obtained on the transformer, the authors obtained the desired current values. The error of this method is estimated by calculating the total capacitance of capacitors, which does not exceed 2%.
Разработка способа измерения импульсных токов большой величины / В. П. Татаринов, П. С. Татаринов, Ю. В. Бебихов [и др.] ; Северо-Восточный федеральный университет им. М. К. Аммосова, Политехнический институт (филиал), Институт физики молекул и кристаллов УФИЦ, Институт проблем сверхпластичности металлов // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. - 2024. - Т. 21, N 1 (95). - С. 81-88. - DOI: 10.25587/2222-5404-2024-21-1-81-88
DOI: 10.25587/2222-5404-2024-21-1-81-88
Количество страниц: 6 с.
- Математика. Естественные науки > Общая биология. Антропология. Вирусология. Микробиология,
- Прикладные науки. Медицина. Ветеринария. Техника. Сельское хозяйство > Медицина > Патология. Клиническая медицина > Инфекционные заболевания,
- НАУКА ЯКУТИИ > МАТЕМАТИКА. ЕСТЕСТВЕННЫЕ НАУКИ > Общая биология. Антропология. Вирусология. Микробиология,
- НАУКА ЯКУТИИ > ПРИКЛАДНЫЕ НАУКИ. МЕДИЦИНА. ТЕХНИКА. СЕЛЬСКОЕ ХОЗЯЙСТВО > Медицина > Патология. Клиническая медицина > Инфекционные заболевания.
This article presents the results of studying the course of tuberculosis infection in children and adolescents who have suffered COVID-19 according to a study of ELISA with the presence of Ig G in the blood. The follow-up included 54 patients aged 2 to 16 years with local forms of tuberculosis who were treated in the inpatient conditions of the children’s department of the E.N. Andreev Scientific and Practical Center of Phthisiology from 2020 to 2022. The patients were divided into two groups: the first group – children who had suffered from COVID-19 according to the results of IgG in the blood – 17 patients; the second group – those who had not had COVID-19 with negative results in IgG blood – 37 patients. A comparative medical and social analysis revealed that children who had had COVID-19 had both social and medical risk factors, as well as a burdened epidemiological history, contact with adult patients with acute progressive and destructive forms of pulmonary tuberculosis. Methods of detecting the tuberculosis process in the first group, 88 % of children were detected by contact, 6 % by treatment, 6 % by immunodiagnostics; in the second group, 51 % by contact, 8 % by treatment and 41 % by immunodiagnostics of the patients. In the study of the tuberculosis process in children of the first group, the infiltration phase was recorded in 80 % patients in the reverse development phase: resorption– 10 % and in the calcification phase – 10 %. In the second group, the infiltration phase was in 50 % of children, the resorption phase was in 14 %, and the calcification phase was in 36 % of patients. It should be noted that the effect of a previously transmitted new coronavirus infection on the course and outcomes of the tuberculosis process was not revealed, no correction of chemotherapy was required, and there was no need to increase the duration of treatment.
Гуляева, Н. А. Течение туберкулеза у детей и подростков, перенесших COVID-19 в условиях Якутии / Н. А. Гуляева, К. Р. Мигалкина, С. С. Саввина ; Северо-Восточный федеральный университет им. М. К. Аммосова, Медицинский институт // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: Медицинские науки. - 2024. - N 2 (35). - C. 30-35. - DOI: 10.25587/2587-5590-2024-2-30-35
DOI: 10.25587/2587-5590-2024-2-30-35
Количество страниц: 9 с.
The evaluation of heat input through fences is an important part of the task of predicting the summer thermal regime of a building under a transparent dome, the interest in the construction of which in the northern regions has increased recently. The calculation of the summer thermal regime of a building under a dome is complicated by taking into account the greenhouse effect, which requires solving the problem of radiative heat transfer in the system: opaque wall - semitransparent screen - environment. It is also necessary to take into account the convection in the dome space. А relatively simple model for calculating the characteristics of heat transfer through the wall of a building with a dome, which takes into account the greenhouse effect, is considered in this paper. Comparison of calculations with experimental data allows us to speak about the adequacy of the proposed model. It is shown that the presence of semitransparent screen due to the greenhouse effect leads to a significant raise in temperature under the dome and an increase in heat input into the building. The influence of ventilation in the dome space on heat access through the enclosing structure for the selected values of external parameters: external temperature and solar radiation was evaluated. The proposed model of heat transfer through the enclosing structure with a semitransparent screen can become part of a more complete model for calculating the thermal regime of a building under a dome.
Тимофеев, А. М. Влияние парникового эффекта на теплопередачу через ограждающие конструкции здания / А. М. Тимофеев, Д. В. Харюзов ; Северо-Восточный федеральный университет им. М. К. Аммосова // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. - 2024. - Т. 21, N 1 (95). - С. 89-97. - DOI: 10.25587/2222-5404-2024-21-1-89-97
DOI: 10.25587/2222-5404-2024-21-1-89-97
Ответственность: ответственный редактор А. Н. Федоров
Издательство: Издательство Института мерзлотоведения
Год выпуска: 2001
Количество страниц: 200 с.
Гаврильев, Петр Петрович.
Мерзлотно-экологические особенности таежных агроландшафтов Центральной Якутии / ответственный редактор А. Н. Федоров ; Российская академия наук, Сибирское отделение, Институт мерзлотоведения им. П. И. Мельникова. - Якутск : Издательство Института мерзлотоведения, 2001. - 195 с.
Количество страниц: 7 с.
The results of generalization and GIS integration of the results of the study of all known indigenous deposits and manifestations of diamonds located in the distributed and undistributed fund of the subsoil of the Russian Federation are presented. The work takes into account the results of prospecting, exploration and exploitation works, minutes of meetings of regional (TKZ) and federal (RKZ and GKZ) commissions on mineral reserves and published data. As a result, a GIS-integrated database was created containing 1,319 objects, for each of which key parameters were determined: coordinates, shape, size, age, average diamond content, forecast resources, and diamond reserves. It was established that the indigenous diamond deposits are concentrated in the Central Siberian subprovincia and account for 2.3 % of all known kimberlite bodies, diamond-bearing kimberlite bodies in the Yakut diamond-bearing province - 282, the predominant body shape is a pipe (59 %). There is no correlation between the size of kimberlite bodies and their diamond content, small pipes, as well as large diatremes, can be industrially diamondiferous, the prevailing absolute age of industrially diamondiferous kimberlites is 329-382 million years.
Шахурдина, Н. К. Геологическое картирование кимберлитового магматизма как фактурная оценка алмазоносных объектов Западной Якутии / Н.К. Шахурдина ; Акционерная компания "АЛРОСА" // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия "Науки о Земле". - 2024. - N 1 (33). - C. 68-74. - DOI: 10.25587/2587-8751-2024-1-68-74
DOI: 10.25587/2587-8751-2024-1-68-74
Количество страниц: 14 с.
The article presents the results of the study by various geologists of the geological structure and prospects of ore-bearing trog complexes performing structures such as throgs, which were identi ed at di erent stages of geological research in the western part of theAldan-Stanovy shield. The main types of traction complexes and their sections were determined. The nature of the occurrence of sedimentary (terrigenous), volcanogenic- sedimentary and metavolcanic rocks performing throgs and forming throg complexes was established. The nature of the ratio of these rocks in the context of the trog complex in the studied trogs was described. The results of the study of trog complexes showed that they are generally characterized by facies variability, heterogeneity of metamorphism and dynamothermal processing of rocks (especially in the sides of trogs) with the formation of mylonites and cataclasites. It was established that the throgs are con ned to three regional systems of discontinuous disturbances. Both consonantal and secant discontinuities were marked inside the throgs, de ning their block tectonics. The results of determining the geological age of the rocks of the trogovoi complex were presented. The trog structures are characterized by ore mineralization associated with the processes of sedimentation (ferruginous quartzites, copper sandstones) and volcanogenic ore formation (copper-crusted and polymetallic mineralization), as well as with the processes of metamorphogenic-hydrothermal redistribution of ore matter (stratiform scheelite mineralization, ore-bearing quartz veins). It was also found that the metallogeny of the trog structures has not been studied su ciently. Nevertheless, the majority of geologists who studied the trogovye complexes noted in their reports that Precambrian trogovye complexes can be considered as important and metallogenically promising geological objects in the western part of the Aldan-Stanovy Shield and deserve more in-depth study.
Пуляев, Н. А. Геологическое строение и металлогения докембрийских троговых структур Западной части Алдано-Станового щита / Н. А. Пуляев ; Северо-Восточный федеральный университет им. М. К. Аммосова, Геологоразведочный факультет // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: "Наука о земле" - 2024. - N 1 (33). - C. 39-52. - DOI: 10.25587/2587-8751-2024-1-39-52
DOI: 10.25587/2587-8751-2024-1-39-52
Количество страниц: 20 с.
A complex comparative study of diamonds from commercially productive diatremes of Daldyn- Alakitsky eld (Udachnaya, Zarnitsa) determined mineral typomorphic features, which allows diagnosing dispersion haloes of kimberlite material in sedimentary thick layers. By the set of typomorphic features, diamonds from Udachnaya pipe have many common features with crystals of other deposits of Daldyn-Alakitsky diamondiferous region. Increased content of variety II and III cubes, close by their features to diamonds from deep inclusions of eclogites, may be referred as inherent only to the Udachnaya pipe features. Zarnitsa pipe demonstarted pronounced prevalence of rhombic dodecahedral habit crystals of variety 1 with large concentration (> 30 %) of typically rounded diamonds. On the whole, diamonds of Daldyn eld are characterized by a complex of typomorphic features, which allow distinguishing them from diatremes of other diamondiferous regions of the Siberian platform with con dence.
Зинчук, Н. Н. Сравнительные особенности алмазов из кимберлитовых месторождений северной части Сибирской платформы / Н. Н.Зинчук, Л. Д. Бардухинов ; Академия наук Республики Саха (Якутия), Западно-Якутский научный центр // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: "Наука о земле". - 2024. - N 1 (33). - C. 11-30. - DOI: 10.25587/2587-8751-2024-1-11-30
DOI: 10.25587/2587-8751-2024-1-11-30
Количество страниц: 6 с.
Tick-borne encephalitis (TBE) is a natural focal viral infection that occurs with high fever and intoxication. It is characterized by damage to the gray matter of the brain and/or the membranes of the brain and spinal cord, with the development of meningitis, meningoencephalitis or encephalomyelitis. The disease can result in persistent neurological and psychiatric conditions, and even death. The carriers of tick-borne encephalitis are ixodid taiga ticks. This type of tick is especially proactive in the spring and summer, endangering adults and children. Infectioning of a person occurs after a tick bite. The causative agent of tick-borne encephalitis is a neurotropic, RNA-containing virus. Tick-borne encephalitis is characterized by increasing neurological symptoms. The symptoms after an encephalitis tick attack are very varied. There are 5 main forms of tick-borne encephalitis: febrile, meningeal, meningoencephalitic (occurs in 15 % of the country as a whole, and twice as often in the Russian Far East). To diagnose with tick-borne encephalitis, it is necessary to take into account clinical manifestations (damage to the central nervous system), epidemiological data (time of the year, presence of vaccination, fact of a tick bite) and laboratory methods of specific diagnosis. The Republic of Sakha (Yakutia) is not an endemic region for the spread of TBE. However, in recent years due to climate change, the number of ticks and bites in this area has increased. This article describes a case of TBE in a 6-year-old child. The disease was extremely severe and resulted in death. Despite the fact that TBE is an extremely rare pathology in our republic, screening for this pathology must be carried out during the tick season.
Клинический случай клещевого энцефалита уребенка 6 лет / Дмитриева Т. Г., Степанова О. С., Кожухова Ж. В. [и др.] ; Северо-Восточный федеральный университет им. М.К. Аммосова, Медицинский институт, ГБУ "Детская клиническая инфекционная больница" // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия "Медицинские науки". - 2024. - N 1 (34). - C. 21-26. - DOI: 10.25587/2587-5590-2024-1-21-26
DOI: 10.25587/2587-5590-2024-1-21-26
Количество страниц: 6 с.
The Elkon uranium-ore region is located in the upper reaches of the river Aldan of the Republic of Sakha (Yakutia) within the Elkon mountain range. The resource potential of the massif allows us to consider it as the largest reserve source of uranium, gold and many other minerals in Russia and the world. During the development of deposits, environmental problems arise, for example, the quality of watercourses. In this regard, it is important to study the algal flora, which are natural indicators of the qualitative state of the waters and study of the hydrochemical state of water. The results of field and laboratory hydrobiological and hydrochemical studies of the rivers of the study area are presented. For the first time, an inventory of phytoplankton and phytoperiphyton algae in the study area was carried out. It was revealed that the basis of the taxonomic spectrum of algal communities is formed by the algoflora of the Bacillariophyta division, Cyanobacteria are less diverse, Chlorophyta and Ochrophyta are single. Phytoplankton in all studied rivers is extremely poor in terms of the number of species, abundance and biomass. Hydrochemical studies have shown that the content of the majority of normalized ingredients in the studied watercourses of the river Aldan in the area of the Elkonsky horst is below the maximum permissible concentrations. There is a high content of petroleum products. In summer, a high content of sulfides in the water of the Neprokhodimyi stream, which flows into the river Kurung, is noted. This circumstance, as well as the very low levels of phytoplankton at the stations of the Propadajushij stream, are the result of many years of mining in the past years of polluted mountain dumps in the Kurung river basin. In general, it has been determined that the qualitative state of the rivers in the Aldan river basin within the Elkon uranium ore region is due to the low-temperature regime of the climate and waters, as well as the location in the area of discontinuous distribution of permafrost. The work was carried out according to the state task on the topic “Vegetation cover of the permafrost zone of the taiga Yakutia: biodiversity, habitat-forming functions, protection and rational use” (scientific topic code: FWRS-2021-0023; within the framework of the draft state task (No. FWRS-2021-0014) of the program in the priority area of the Program of Fundamental Scientific Research in the Russian Federation for the long term (2021-2030).
Николаева, Н. А. Гидробиологические и гидрохимические исследования водотоков верхнего течения реки Алдан Республики Саха (Якутия) / Николаева Н. А., Копырина Л. И. ; Институт биологических проблем криолитозоны // Успехи современного естествознания. - 2023. - N 8. - С. 54-59. - DOI: 10.17513/use.38088
DOI: 10.17513/use.38088