bluuebunny/crossref_metadata_2025_split huggingface dataset:
LONG MAGNETIC MINIMUM OF HD 166620 – POSSIBLE BEGINNING OF THE ANALOGUE OF THE MAUNDER MINIMUM
Authors: Savanov I. S. 
Published: April 2024

Based on photometric observations published in the literature, the manifestations of the activity of the K2V dwarf HD 166620 were studied. The obtained results are compared with the results of the analysis of the chromospheric activity of the star. HD 166620 is entering in a long magnetic minimum and may be the first reliable candidate for objects that are at a minimum of activity similar to the Maunder minimum (MM) of the Sun. Studies of changes in the magnetic activity of the star were carried out based on the values of the S‑index (1885 measurements in the observation interval for 53.6 years), obtained mainly before its entry into the MM phase, and on photometric measurements of the brightness in the b and y filters covering 17 seasons from 1993 to 2020 obtained with the automatic APT telescope (MM phase and its beginning). It has been established that the Kamogata Wide-field Survey observation data combined into a single array in filters B, V and Ic (about 1400 measurements) convincingly demonstrates the long-term variability of the HD 166620 brightness in the phase of the probable MM state. At the same time, the observations of the Kamogata Wide-field Survey fill the gap in the photometric data of the APT automatic telescope well. The value of the cycle (about 4000 days) is comparable to the duration of observations, with its refinement by according to the data of a larger time interval, it is possible that it will correspond more to the value found from the data on chromospheric activity. The main results of the work should include the cyclic long-term changes in the activity of the star detected by us during the beginning of the MM phase. The question of clarifying the value of the rotation period HD 166620 remains open. There were no significant peaks corresponding to the value P = 45.06 days, previously accepted as the period of rotation of the star, on almost all the power spectra constructed by us. It is noted that further observations are required to establish the full duration of the minimum phase of the star’s activity.
INFLUENCE OF RADIATION FORCES ON THE OBSERVED POSITION AND EVOLUTION OF THE ORBIT OF SPACE DEBRIS OBJECTS WITH A HIGH AREA-TO-MASS RATIO
Authors: Sannikova T. N. 
Published: April 2024

This study is devoted to assessing the effect of light pressure on the observed position and orbital elements of space debris objects with a large area-to-mass ratio \(A{\text{/}}m\) in the region of medium-high, geostationary and highly elliptical orbits over short time intervals (up to 1 year). Numerical integration of the orbits of 78 model objects was performed at 8 values of \(A{\text{/}}m\) from \(0.01\) to \(125\) m2/kg and two values of the reflection coefficient \(k = 1.0\) and 1.44. The maximum (during the given time periods) angular distances relative to the sub-satellite point on the Earth’s surface between the positions found with and without radiation forces, as well as the maximum changes in the semi-major axis, eccentricity and inclination of the orbit under the influence of radiation forces during the integration time, are determined. It is found that for all objects there is a negative drift of the semi-major axis. For models with semi-major axes of 10 000, 15 000, and 20 000km, the inclination variations do not exceed \(15^\circ \). Among other objects, at \(\gamma = kA{\text{/}}m \geqslant 50\) m2/kg, cases of transitions from direct to reverse motion (and vice versa) due to light pressure, were recorded, which indicates the possibility of flips of the orbital plane under the influence of radiation forces even in the short term. The duration of successful integration (the lifetime of an object in orbit) is given; it was less than \(1\) year for most models with \(\gamma \geqslant 50.0\) m2/kg. Also the time intervals during which the displacement of the position perturbed under the influence of radiation forces from the unperturbed one does not exceed \(5\prime \), \(45\prime \), and \(3^\circ \) are presented, depending on the value of \(\gamma \), semi-major axis, and eccentricity in the initial epoch. Based on the results of the article, it is possible to estimate the required frequency of observations of objects with large \(A{\text{/}}m\).
MORPHOLOGY OF FRUITLETS OF FAR EASTERN SPECIES OF THE GENUS <i>POTENTILLA</i> (ROSACEAE)
Authors: Motorykina T. N. 
Published: April 2024

The study of fruitlet morphology is carried out in 16 species of the genus Potentilla occurring in the Amur Region (Priamurye) and Primorye Territory. The sculpture of the fruitlet surface is shown to have diagnostic significance. The position, shape of the stylodium and the ratio of its length to the length of the fruitlet can be successfully used as diagnostic characters to distinguish the subgenera of the genus Potentilla. The inaccuracy of S.V. Yuzepchuk (1941) concerning the stylodia in the diagnoses of sections Niveae and Argenteae in the “Flora of the USSR” is corrected. The results of the research have shown that the stylodia in the species of these sections are short, rather thick, no longer than a mature fruitlet, instead of thin and long, as it was specified by S.V. Yuzepchuk. The presence of glands on the fruitlets of the members of section Pensylvanicae (P. approximata, P. conferta) can serve as a reason for the distinguishing this section within the subgenus Potentilla. The degree of expression of papillary outgrowths (short and long) in the lower part of the stylodium is a diagnostic trait of section Potentilla. The presence of covering hairs on the dorsal and ventral sides of the fruitlets in P. semiglabra, as well as a wide wing-like outgrowth on the dorsal side of the fruitlets in P. asperrima can be used in the taxonomy of the genus Potentilla as specific diagnostic traits. The species of Potentilla (P. amurensis, P. asperrima, P. centigrana) with a diploid set of chromosomes (2n = 14) are characterized by scarious and wing-like outgrowths on the fruitlets.
SYNOPSIS OF FERNS OF KEMEROVO REGION – KUZBASS
Authors: Klimov A. V. , Proshkin B. V. 
Published: April 2024

Ferns play an important role in the flora and composition of the vegetation cover of the Kemerovo Region. Active research in the region in recent years has led to the identification of new taxa, revision of the circumscription of some genera and families, and clarification of their localities. The purpose of this work is to clarify modern taxonomic composition of the pteridoflora of Kuzbass and the features of distribution of its taxa. The materials for the work were obtained from the authors’ field research, the study of the collections of the P.N. Krylov Herbarium of Tomsk State University (TK), Tomsk, and Herbarium of the Kuzbass Botanical Garden (KUZ), Kemerovo. The fern flora of the Kemerovo Region comprises 40 species from 18 genera and 13 families. An analysis of the geographic elements of the fern flora has shown that it is dominated by species with a wide Holarctic ranges. The ecological composition according to the moisture regime reflects current conditions of the region, with mesophytes and mesohygrophytes accounting for 92.8% of the species composition. According to the factor of the substrate rockiness, two subequal groups are distinguished: petrophytes and non-petrophytes. The groups of petrophytic (47.5%) and forest (40.0%) species make the highest contribution to the composition of the fern flora. Herbaceous monocarpics are represented by Salvinia natans only, the rest are perennials. The analysis of the relict component has shown that 26 taxa belong to the tertiary relicts, most of which are associated in their origin with forest vegetation of the Paleogene-Neogene, nine taxa belong to the relict element of the petrophyton. 19 fern species are listed in the Red Book of Kuzbass.
ALL-RUSSIAN SCIENTIFIC CONFERENCE WITH INTERNATIONAL PARTICIPATION “XII MEETING IN MEMORIAM OF EKATERINA ALEXEEVNA GALKINA – TYPES OF MIRES OF RUSSIAN REGIONS”
Authors: Smagin V. A. , Ivchenko T. G. , Galanina O. V. , Yurkovskaya T. K. 
Published: April 2024

The All-Russian Scientific Conference with international participation “XII meeting in memoriam of Ekaterina Alexeevna Galkina – Types of mires of Russian regions” was held at the Komarov Botanical Institute RAS on February 3, 2023, and traditionally dedicated to the International Wetlands Day. The conference was attended by 109 specialists from 17 cities of Russia and Belarus, 15 scientific institutions, 8 universities and 7 conservation agencies. During the conference, 18 in-person and 5 online reports were presented.
ALL-RUSSIAN SCIENTIFIC CONFERENCE “STUDY AND CONSERVATION OF BIODIVERSITY OF ECOSYSTEMS OF EUROPEAN RUSSIA”
Authors: Vasjukov V. M. , Novikova L. A. 
Published: April 2024

The All-Russian scientific conference “Study and conservation of biodiversity of ecosystems of European Russia” dedicated to the 150th anniversary of Doctor of Biological Sciences, Professor I.I. Sprygin and the 40th anniversary of the Institute of Ecology of the Volga Basin of the Russian Academy of Sciences was held from July 4 to July 7, 2023, at the Institute of Ecology of the Volga Basin of RAS (Tolyatti). 55 scientists (32 of them from other cities) from 20 scientific institutions of Russia took part in the Conference in person.
Dimensional and Physiological-Biochemical Parameters of Erythrocytes and Gill and Heart Indices in Some Benthic Fish of the Black Sea Coast of the Southeastern Crimea
Authors: Silkin M. Yu. , Chernyaeva V. N. , Silkin Yu. A. , Silkina E. N. 
Published: April 2024

The dimensional and physiological-biochemical parameters of erythrocytes, as well as the gill and heart indices were studied in five species of marine benthic fish. The black scorpionfish Scorpaena porcus Linnaeus, 1758 and the shore rockling Gaidropsarus mediterraneus Linnaeus, 1758 differed from the other species in a larger mass of the heart and gill apparatus, which indicates more efficient transport capabilities of the circulatory system of these fish. The linear size characteristics of erythrocytes of a cartilaginous fish, the thornback ray Raja clavata Linnaeus, 1758, were 1.5–2 times higher than those of erythrocytes of S. porcus, which were the largest among the studied teleosts. The sizes of erythrocytes of three other teleost species differed insignificantly. The amount of hemoglobin per unit surface area of erythrocyte, which reflects the efficiency of hemoglobin saturation with oxygen, insignificantly varied (0.05 to 0.071 pg/mm2) among the bony fish stu-died. In contrast, in the thornback ray this parameter was 2.7–3.8 times lower. The intracellular glycogen concentration, which characterizes the degree to which the erythrocyte is independent of glycemic fluctuations, was highest in cells of S. porcus (305.2 ± 35.1 mg %), while it was lowest in erythrocytes of the thornback ray R. clavata (142.8 ± 15.1 mg %). The ecto-ATPase activity was higher in large erythrocytes of S. porcus, R. clavata, and Uranoscopus scaber (4.8, 3.1, and 1.6 µmol Pin/min/mL of erythrocytes, respectively) than in smaller erythrocytes of Crenilabrus tinca and Gaidropsarus mediterraneus (0.5 and 0.4, µmol Pin/min/mL of erythrocytes, respectively). This confirms the assumption that erythrocytes use the thermal energy from hydrolysis of extracellular ATP to “warm up” their own membrane, which leads to the change in the rheological characteristics of blood in the capillary blood flow.
Analysis of Swarm Earthquakes on the Territory of the Elbrus Volcanic Center
Authors: Dudarov Z. I. , Dmitrieva I. Yu. , Sayapina А. А. , Bagaeva S. S. 
Published: April 2024

The paper presents the results of the analysis of swarm seismic events recorded in 2018 in the area of the Elbrus volcanic center by the North Caucasian seismological network of the FRC GS RAS. The standard method of station processing shows the hypocenters of recorded events in the area of the Elbrus volcanic center. The hypocenters of seismic events in swarm sequences were refined using the LOS software package, a complex combined location algorithm, methods of minimizing the time discrepancy in the source and grid search with depth enumeration. The described approach improves the reliability of location due to accounting for inaccuracies associated with incorrectly taken times of phase arrivals and minor deviations in travel times, depending on the velocity model of the medium used. According to the results of the study of the focal mechanisms of the strongest earthquakes, the type of movement was established, which is consistent with the kinematics of the Elbrus-Mineralnye Vody fault zone. Correlation analysis of the waveforms of the vertical component filtered in the frequency range of 1‒10 Hz, including P and S waves, for the nearest station shows a high coincidence of the analyzed data (correlation coefficient R ≥ 0.85), which indicates a high probability that events have similar sources and paths propagation of seismic waves. Comparison of the power spectral density of individual earthquakes in swarm sequences also demonstrates high similarity.
Pigment Characteristics of Macrophytes from the Rybinsk Reservoir
Authors: Sigareva L. E. , Timofeeva N. A. 
Published: April 2024

The first data on the pigment characteristics of higher aquatic plants in the Rybinsk Reservoir (Upper Volga, Russia) are presented. The average content of chlorophyll a is 7.5 ± 0.6 mg/g organic matter in leaves, and 4.0 ± 1.4 mg/g organic matter in stems, or 6.1 ± 0.5 and 3.3 ± 1.2 mg/g dry plant material, respectively. The average carbon/chlorophyll a ratio is 76 ± 6.2 in leaves and 408 ± 150 in stems. Helophytes, which dominate in the reservoir in terms of biomass and overgrowth area, are distinguished by a record concentration of organic matter (90.2 ± 0.8%). The concentration of chlorophyll a and the relative content of carotenoids depend on environmental conditions and plant species.
Hematological Parameters of the Australian Red-Clawed Crayfish <i>Cherax quadricarinatus</i> (Decapoda: Parastacidae) when Exposed to Air
Authors: Skafar D. N. , Strelkova O. V. , Shumeyko D. V. 
Published: April 2024

The effect of exposure on the hematological parameters of the red claw crayfish Cherax quadricarinatus Von Martens 1868 was studied. Hemolymph was taken immediately after extraction from the water after 2, 4, 8 hours of exposure on the shore and 24 and 72 hours after returning to the water. Determined total hemocyte counts (THC), hemogram, general protein and hemocyanin disease. The dynamics of the growth of hematological parameters in the temporal aspect was revealed: THC and the proportion of granulocytes increased to reveal the entire pattern of growth, the proportion of agranulocytes and the total content of protein and hemocyanin. After exposure on the shore, the color of the hemolymph changed from bluish with a grayish tint to cloudy gray-green (deviation from the norm). The data obtained indicate the development of compensatory factors and pathological properties in response to stress, the occurrence of symptoms in the air, which can be used in practice in assessing the state of the red claw cancer in the process of transport.
Polyphenol compounds of freeze-dried Moringa oleifera Lam pods and their anti-inflammatory effects on RAW 264.7 macrophages stimulated with lipopolysaccharide
Authors: Hunthayung Kwanchanok , Bhawamai Sassy 
Published: April 2024

Background: Moringa oleifera pods are the main constituent in typical diets throughout Thailand. Due to their nutrients and phytochemicals, moringa pods have potential as an antioxidant and anti-inflammatory agent. Freeze drying is a widely embraced method known for extending shelf life, resulting in preserved nutrients and high-quality products.
Objective: This study aimed to investigate the physical properties, nutrients, and bioactive compounds of freeze-dried moringa pods as well as their anti-inflammatory effects on lipopolysaccharide-induced Raw 264.7 macrophages.
Methods: Moringa pods were freeze-dried and ground. The powders were extracted with 70% ethanol at room temperature for 24 hr. and then centrifuged at 5000 rpm and 25áµ’C. The supernatant-filtered extracts were collected to determine bioactive compound contents and antioxidant as well as anti-inflammatory properties.
Results: The results illustrated that freeze-dried moringa pod extract had bioactive compounds including genistein synthetic, trans-ferulic acid, p-Coumaric, myricetin, gallic acid, and syringic acid, which demonstrated antioxidant activity. In terms of anti-inflammatory effects, 50-200 Âµg/ml of extract inhibited pro-inflammatory mediators including NO production and IL-6 and TNF-Î± levels on LPS-induced Raw 264.7 macrophages.
Results: These results indicate that the antioxidant and anti-inflammatory properties of freeze-dried moringa pods make them a promising new raw material for functional product development.
Keywords: Anti-inflammation, Moringa oleifera, genistein synthetic, trans-ferulic acid, p-Coumaric, myricetin, gallic acid, syringic acid.
Management of Select Adverse Events Following Delandistrogene Moxeparvovec Gene Therapy for Patients With Duchenne Muscular Dystrophy
Authors: Zaidman Craig M. , Goedeker Natalie L. , Aqul Amal A. , Butterfield Russell J. , Connolly Anne M. , Crystal Ronald G. , Godwin Kara E. , Hor Kan N. , Mathews Katherine D. , Proud Crystal M. , Kula Smyth Elizabeth , Veerapandiyan Aravindhan , Watkins Paul B. , Mendell Jerry R. 
Published: April 2024

BACKGROUND: Duchenne muscular dystrophy (DMD) is a rare, degenerative, recessive X-linked neuromuscular disease. Mutations in the gene encoding dystrophin lead to the absence of functional dystrophin protein. Individuals living with DMD exhibit progressive muscle weakness resulting in loss of ambulation and limb function, respiratory insufficiency, and cardiomyopathy, with multiorgan involvement. Adeno-associated virus vector-mediated gene therapy designed to enable production of functional dystrophin protein is a new therapeutic strategy. Delandistrogene moxeparvovec (Sarepta Therapeutics, Cambridge, MA) is indicated for treatment of ambulatory pediatric patients aged 4 through 5 years with DMD who have an indicated mutation in the DMD gene. OBJECTIVE: Evidence-based considerations for management of potential adverse events following gene therapy treatment for DMD are lacking in clinical literature. Our goal was to provide interdisciplinary consensus considerations for selected treatment-related adverse events (TRAEs) (vomiting, acute liver injury, myocarditis, and immune-mediated myositis) that may arise following gene therapy dosing with delandistrogene moxeparvovec. METHODS: An interdisciplinary panel of 12 specialists utilized a modified Delphi process to develop consensus considerations for the evaluation and management of TRAEs reported in delandistrogene moxeparvovec clinical studies. Panelists completed 2 Questionnaires prior to gathering for an in-person discussion. Consensus was defined as a majority (≥58% ; 7/12) of panelists either agreeing or disagreeing. RESULTS: Panelists agreed that the choice of baseline assessments should be informed by individual clinical indications, the treating provider’s judgment, and prescribing information. Corticosteroid dosing for treatment of TRAEs should be optimized by considering individual risk versus benefit for each indication. In all cases involving patients with a confirmed TRAE, consultations with appropriate specialists were suggested. CONCLUSIONS: The Delphi Panel established consensus considerations for the evaluation and management of potential TRAEs for patients receiving delandistrogene moxeparvovec, including vomiting, acute liver injury, myocarditis, and immune-mediated myositis.
Venäjänkielisten suomen puhumisen taito taustamuuttujien valossa
Authors: Ahola Sari , Hirvelä Tuija 
Published: April 2024

Artikkeli käsittelee venäjänkielisten aikuisten (n=8 412) suomen kielen puhumisen taitoa ja siinä tapahtuneita muutoksia vuosina 2012–2021 kansallisen kielitutkintojärjestelmän, Yleisten kielitutkintojen, rekisteriaineiston avulla. Rekisteriaineiston mukaan venäjänkielisten suomen kielen puhumisen taito on heikentynyt, mihin etsimme selityksiä peilaamalla tuloksia venäjänkielisten taustamuuttujiin. Tulokset osoittavat, että puhumisen taito oli yhteydessä venäjänkielisten taustamuuttujiin. Miehet olivat puhumisen taidossa jonkin verran naisia heikompia. Lisäksi suomenoppijan iällä, koulutustasolla ja suomen kielen opiskelun pituudella oli merkitystä puhumisen taidolle. Hyvä koulutustaso, nuori ikä ja vähintään 4 vuoden suomen opinnot olivat yhteydessä hyvään puhumisen taitoon. Myös kielenkäyttöympäristö ja -taajuus vaikuttivat positiivisesti puhumisen taitoon: etenkin kielen käyttäminen jokapäiväisten asioiden hoitamisessa oli merkitsevä puhumisen taidolle. Työssäkäynti korreloi hyvän puhumisen taidon (taso 4~B2) kanssa, mutta työttömät ja opiskelijat saavuttivat myös usein odotuksia paremmin taitotason 3 (B1).

The study examines Russian-speaking examinees’ (n=8412) oral proficiency in Finnish and changes in proficiency between 2012–2021 using the register data from a national high-stakes language test (National Certificate of Language Proficiency). According to the register data, Russian-speaking examinees’ oral proficiency has declined over the years. In this article, we discuss possible explanations for the decline in relation to the background factors of the examinees. The results show that the decline in oral proficiency was linked with the background factors. Male speakers were slightly weaker than female speakers, and older speakers weaker than younger ones. In addition, the age of the Finnish learner, their level of education and their length of time spent studying Finnish also played a role in their speaking ability. A high(er) level of education, young age and at least four years of Finnish language studies were associated with good speaking skills. The environment and frequency of language use also had a positive effect on oral proficiency: in particular, using the language in everyday interactions was significant for oral proficiency. Employment was correlated with good oral proficiency (level 4~B2), but unemployed people and students also tended to achieve a better-than-expected level 3 (B1).