Luminescent coordination polymers based on Ca²⁺ and octahedral cluster anions [{M₆Clⁱ₈}Clᵃ₆}²⁻ (M = Mo, W) : synthesis and thermal stability studies

Luminescent coordination polymers (CPs) based of inexpensive stable precursors are attractive materials for applications. Here we report the synthesis and evaluation of the stability and photophysical characteristics of the first examples of phosphorescent CPs based on octahedral molybdenum and tungsten cluster anions. Specifically 1D CP trans-[{Ca(OPPh₃)₄}{{M₆Clⁱ₈}Clᵃ₆}]∞ (M = Mo, W) can be obtained either directly at increased temperature or via intermediate phases [cis-Ca(OPPh₃)₄(H₂O)₂][{M₆Clⁱ₈}Clᵃ₆]∙2CH₃CN that are stable at room-temperature, but convert to the titled CP at temperatures above 100 °C

Core acid treatment influence on well reservoir properties in Kazan oil-gas condensate field

The research involves investigation of the influence of hydrochloric acid (HCI-12%) and mud acid ( mixture: HCl - 10 % and HF - 3 %) treatment on the Upper-Jurassic reservoir properties in Kazan oil-gas condensate field wells. The sample collection included three lots of core cylinders from one and the same depth (all in all 42). Two lots of core cylinders were distributed as following: first lot - reservoir properties were determined, and, then thin sections were cut off from cylinder faces; second lot- core cylinders were exposed to hydrochloric acid treatment, then, after flushing the reservoir properties were determined, and thin sections were prepared. Based on the quantitative petrographic rock analysis, involvin 42 thin sections, the following factors were determined: granulometric mineral composition, cement content, intergranular contacts and pore space structure. According to the comparative analysis of initial samples, the following was determined: content decrease of feldspar, clay and mica fragments, mica, clay and carbonate cement; increase of pore spaces while in the investigated samples- on exposure of rocks to acids effective porosity and permeability value range is ambiguous

Detection Statistics of Pulse Signals at Declinations from +42o+42^o to +52o+52^o at the Frequency 111 MHz

A search for pulse signals was carried out in a new sky area included in the monitoring program for the search for pulsars and transients. Processing of several months data recorded in six frequency channels with a total bandwidth of 2.5 MHz showed that, on average, 4 pulses per hour are observed in each of the 24 connected stationary beams. Of these pulses, 18.3% are similar to those of pulsars. They are visible in one or two neighboring beams and have a pronounced dispersion shift, that is, they are recorded first at a high and then at a low frequency, which indicates the possible passage of the signal through the interstellar medium. Almost 68% of such detected pulses belong to six known pulsars with dispersion measures from 9 to 141 $pc/cm^3$, and almost all of the remaining pulses are either noise of an unknown nature or artifacts of the proposed pulse separation technique. An additional study of the selected array of 3650 obvious pulsar pulses revealed 13 pulses belonging to four rotating radio transients (RRATs). Their dispersion measures are in the range of 17-51 $pc/cm^3$. A search for regular (periodic) RRAT emission was carried out using power spectra summed over 121 days. Periodic radiation was not detected, but for two RRATs, upper estimates of the periods were obtained from measurements of the time intervals between pulses. The upper estimates of the integrated flux density of the detected RRATs are in the range 2-4 mJy at the frequency 111 MHz.Comment: published in Astronomy Report, translated by Yandex translator with correction of scientific lexis, 6 pages, 3 figures, 2 table

Detection of two new RRATs at 111 MHz

A search for pulse signals in a area with declinations of +52\degr <\delta <+55\degr was carried out on the LPA LPI radio telescope. When processing ten months of observations recorded in six frequency channels with a channel width of 415 kHz and a total bandwidth of 2.5 MHz, 22 thousand events were found with a pronounced dispersion delay of signals over frequency channels, i.e. having signs of pulsar pulses. It turned out that the found pulses belong to four known pulsars and two new rotating radio transients (RRATs). An additional pulse search conducted in 32-channel data with a channel width of 78 kHz revealed 8 pulses for the transient J0249+52 and 7 pulses for the transient J0744+55. Periodic radiation of transients was not detected. The analysis of observations shows that the found RRATs are most likely pulsars with nullings, where the proportion of nulling is greater than 99.9\%.Comment: published in Astronomy Reports, translated by Yandex translator with correction of scientific lexis, 5 pages, 2 figures, 1 tabl

GEMINGA: NEW OBSERVATIONS AT LOW RADIO FREQUENCIES

ABSTRACT. After nearly 10 years, we have succeeded to detect radio emission from Geminga more again. In this report we present new evidence for presence of radio emission from Geminga in the range 42-112 MHz. The observations were carried out on two sensitive transit radio telescopes We used three new digital receivers to detect the pulses and to obtain dynamic spectra.The examples of mean pulse profiles are presented. Exact value of the dispersion measure have been calculated using the simultaneous observations at three frequencies

Rare clinical observation of pronounced response to immunotherapy in a patient with anaplastic thyroid cancer

Anaplastic thyroid cancer is the rarest and the most aggressive form of thyroid cancer. It comprises 1-2 % of all cases and is characterized by rapid growth. median survival of patients with this pathology is about 5 months. Clinical manifestations of the disease are rapid deformation in the neck area, progressive respiratory distress, and dysphagia.The article describes a clinical case of a response of unresectable, BRAF-negative, PD-L1-positive (programmed death-ligand 1) anaplastic thyroid cancer to immunotherapy with pembrolizumab

Application of Basophil Activation Test with Anthraxin for Laboratory ( <I>in vitro</I>) Diagnostics of Anthrax

Demonstrated is the possibility to use in vitro basophil activation test with anthraxin, with registration of the results by means of flow cytometry, for anthrax diagnostics. This approach seems promising as it provides quantitative assessment of sensitization of the organism and does not cause its additional allergization. The duration of the analysis is 1h. The test is suggested for application, as an express one, for early and retrospective laboratory diagnostics of anthrax, estimation of post-vaccinal immunity

Rhythmic Structure of Reading and Cross-Modal Priming Effect of Rhythm on Grammatical Judgements

Ритм является фундаментальным элементом как музыки, так и речи, однако влияние аудиально представленных ритмических паттернов на процессы чтения игнорируется в исследованиях. Здесь мы представляем исследование связанных с событиями потенциалов, проведенное с использованием кросс-модального дизайна. Мы обнаружили увеличение эффекта P600 после регулярной ритмической стимуляции, который был наиболее выражен в правом полушарии. Также мы обнаружили значимое взаимодействие фактора полушария и прайминга. Результаты нашего исследования показывают тесное межмодальное взаимодействие в процессе чтения, а также наличие внутренней ритмической структуры, которая участвует в процессе чтения и может быть синхронизирована с внешней ритмической стимуляцией.Rhythm is a fundamental element of both music and speech, however, the effect of auditorily presented rhythm patterns on reading processes is neglected in the research. Here we present an event-related potentials study conducted using such cross-modal design. We found an increased P600 effect after regular rhythmic stimulation, this effect was the most pronounced in the right hemisphere.We also found a significant interaction between hemispheric factor and priming. These results suggest tight intermodal connections in the reading process as well as the existence of an internal rhythmic structure which is both involved in the reading process and might be synchronized with external rhythmic stimulation

Analysis of the Situation on Brucellosis around the World and in the Russian Federation

Data on the incidence of brucellosis and main trends in the development of situation on this infection in countries around the world under current conditions are provided in the review. A detailed analysis of epizootiological and epidemiological situation regarding brucellosis in the Russian Federation over the last decade and a forecast for human brucellosis incidence for 2024 are given. It is established that global situation on brucellosis in different regions of the world has undergone changes over the past 15–20 years. One can observe an almost twofold increase in the number of countries affected by brucellosis in the world. A relatively high brucellosis morbidity rates were recorded in some countries in Africa, Central Asia, South and South-East Asia, Central and South America. In countries of the European Union, there is a trend towards an increase in the number of human brucellosis cases associated with travel to enzootic countries. In the Russian Federation, an unstable epidemiological situation has been observed over the past 10 years. 3537 cases were identified. In 2022–2023, an emerging trend towards an increase in incidence of brucellosis among population by 30–50 % as compared to long-term average values was recorded, linked to occurrence of cattle epizooties, including at large livestock enterprises; formation of group epidemic foci in previously relatively brucellosis-free territories of the Central, Volga and Southern Federal Districts; and the deterioration of epizootic situation on brucellosis in the Republic of Dagestan and a number of constituent entities of Siberian Federal District. Situation on brucellosis in the Smolensk and Bryansk Regions requires closer attention. There are signs of rooting (enzooty) and further spread of brucellosis among cattle there in 2023. In 2024, incidence rate can be predicted to be 35–40 % higher than the long-term average values. The number of human brucellosis cases may be approximately 480–530 (0.32–0.36 per 100 000 population)

Brucellosis: Trends in the Development of Situation in the World and Forecast for 2022 in the Russian Federation

An analysis of trends in the development of situation on brucellosis in the world over past decade and the data on the main risk factors for the occurrence of epidemiological complications regarding this infection in various regions of the world are provided in the paper. An expert assessment of the current epizootiological and epidemiological situation on brucellosis, the coverage of population and animals with immunization in the Russian Federation is given. Over 9 months of 2021, 210 potentially hazardous as regards brucellosis in cattle areas and 24 sites – as regards brucellosis in small ruminants – were registered in Russia. Compared to the same period in 2020, there was a decrease in the number of newly identified hazardous sites for bovine brucellosis by 35.8 % (117 areas). However, long-term upward trend in epizootiological adversity for bovine brucellosis in Russia persists. The epidemiological situation on brucellosis in the country for the period of 2012–2021 is characterized as unfavorable. Decrease in the number of newly detected human brucellosis cases (by 25.1 % of long-term average values) is observed against the background of persistent unfavorable epizootic conditions for brucellosis among epidemiologically significant species of small ruminants and cattle in regions with developed animal husbandry. In 2021, clusters of human cases were registered in the Republic of Dagestan and Penza Region. In the Republic of Dagestan, against the background of aggravation of epizootiological and epidemiological situation on brucellosis, there was also an alarming trend towards prevalence of a relatively high incidence among minors. The proportion of cases of brucellosis among children under the age of 17 in the Republic amounted to 60.3 % of the total number of minors with newly diagnosed brucellosis in Russia over the past 10 years. Taking into account current epizootic, epidemic situations and the long-term dynamics of the development of situation on  brucellosis in the Russian Federation, the incidence of brucellosis among the population  is predicted to be 10–15 % lower than the average long-term values – 0.18–0.20 per 100000 of the population – in 2022. The number of human cases of brucellosis can range from 250 to 300