bluuebunny/crossref_metadata_2025_split huggingface dataset:
SLEEP WITH OPEN EYES IN TWO SPECIES OF DEER, THE INDIAN SAMBAR (<i>RUSA UNICOLOR</i>) И SIKA DEER (<i>CERVUS NIPPON</i>)
Authors: Lyamin O. I. , Siegel J. M. , Nazarenko E. A. , V Mnh , Rozhnov V. V. 
Published: April 2024

The relationship between postures, sleep stages and eye state was established in two species of deer, the Indian sambar (Rusa unicolor) and sika deer (Cervus nippon), based on video recording. In both species, the state of rest or behavioral sleep was recorded in the sternal position, holding the head above the ground, and in the lateral position, with the head resting on the croup or on the ground. Rest accounted for at least 80% of the time in these positions. Based on behavior criteria a substantial portion of rest represented slow-wave sleep. Episodes of rapid eye movements (REM sleep) were recorded in the lateral position. They did not exceed 2 min. When the deer were in the sternal posture, they kept their eyes open most of the time: on average 96% of the time in sambars and 82% in sika deer. Episodes of the open eye in this posture lasted up to 8.4 min in sambars and up to 3.3 min in sika deer. In the lateral position, such episodes were 4 and 1.5 times shorter. Sleeping with open eyes in ungulates may be an important mechanism of maintaining vigilance.
EFFECT OF SULFUR CONCENTRATION ON OLIVINE SULFIDATION UNDER LITHOSPHERIC MANTLE <i>PT</i>-PARAMETERS
Authors: Bataleva Y. V. , Furman O. V. , Zdrokov E. V. , Borzdov Y. M. , Palyanov Y. N. 
Published: April 2024

Experimental studies aimed at the modeling of interaction processes of sulfur-bearing metasomatic agents with mantle silicates and assessing the effect of sulfur concentration on olivine sulfidation were carried out in the Fe,Ni-olivine – sulfur system using the high-pressure multi-anvil apparatus BARS (1050 and 1450°C, 6.3 GPa, 40–60 hours, sulfur concentrations (Xs) 0.1, 2 and 6 mol. %.). It has been established that as a result of the recrystallization of Fe,Ni-olivine in a sulfur melt, Fe and Ni are extracted from olivine into this melt, and formation of Fe,Ni-sulfides (or sulfide melts) and low-iron, low-nickel silicates takes place. The key indicator characteristics of the olivine sulfidation process are determined depending on the temperature and sulfur concentration, including characteristic phase assemblages, regularities in the evolution of the chemical compositions of mineral and melt phases, and structural features of olivine crystals. It has been experimentally established that reducing sulfur-bearing metasomatic agents, even in minimal concentrations and at relatively low temperatures, are capable of dissolving and transporting mantle silicates and sulfides, and can play an important role in sulfide ore formation in the mantle.
COMPARISON OF THE I AND IV DIAMOND TYPES (ACCORDING TO THE CLASSIFICATION OF Y.L. ORLOV) FROM THE SNAP LAKE KIMBERLITES (SLAVE CRATON, CANADA)
Authors: Ivanova O. A. , Pokhilenko N. P. , Afanasiev V. P. , Zedgenizov D. A. , Barabash E. O. 
Published: April 2024

The article is devoted to the study of diamonds of the I and IV varieties (according to the classification of Y.L. Orlov) from Snap Lake kimberlites. Based on the study of the morphology, the impurity defects of nitrogen and the internal structure of these diamonds, it was found that the uncoated crystals and the cores of coated diamonds were formed under similar conditions. It is assumed that the coats were formed on a significant part of the formed diamonds under mantle conditions, and their etching occurred at the hypogenic stage of the development of the kimberlite body.
NEW DATA ON GEOLOGY AND PALAEOGEOGRAPHICAL EVOLUTION OF THE SOUTHERN EAST SIBERIAN SEA
Authors: Petrov O. V. , Ryabchuk D. V. , Sergeev A. Yu. , Budanov L. M. , Zhamoida V. A. , Neevin I. A. , Taldenkova E. E. , Prishchepenko D. V. , Nosevich E. S. , Pushina Z. V. , Grigoriev A. G. , Bashirova L. D. , Ponomarenko E.P. 
Published: April 2024

The paper deals with the results of geological and geophysical research of shallow-water areas of the East Siberian Sea, started in 2018 in the frame of State Geological Mapping project (Geological Map of 1 : 1 000 000 scale) and continued in 2022 under support of the Russian Science Foundation project. The seismostratigraphic scheme of the Quaternary sediment sequence is compiled, and the conception of the palaeogeographical evolution in the Late Pleistocene-Holocene is proposed.
FIRST RESULTS OF U−Th/He DATING OF EPIGENETIC PYRITE FROM ROCKS OF THE BAZHENOV FORMATION, WESTERN SIBERIA
Authors: Yakubovich O. V. , Vasilyeva N. A. , Vasilyeva K. Yu. , Anosova M. O. , Kotov A. B. , Podolskaya M. M. , Gorokhovskiy B. M. 
Published: April 2024

U–Th/He method was applied to determine the age of epigenetic pyrite from the oil source rocks of the Bazhenov Formation, Western Siberia. Results indicate the possibility to date the post-sedimentation processes in a sedimentary basin by authigenic pyrite U–Th/He dating. The U–Th/He isochron age of pyrite (n = 7) from the dolomites of the Bazhenov Formation within the Frolovskaya megadepression is much younger than the age of sedimentation and corresponds to the Santonian-Cenomanian stages of the Upper Cretaceous (90 ± 8 Ma).
MONITORING OF ARSENIC AND MERCURY CONTENT IN AGROECOSYSTEMS OF THE CENTRAL CHERNOZEMIC REGION OF RUSSIA
Authors: Lukin S. V. 
Published: April 2024

The work analyzed the results of state agroecological monitoring of soils carried out in the southwestern part of the forest-steppe zone of the Central Chernozemic region of Russia. It was found that the average gross content of As and Hg in horizon A of arable chernozem of the typical forest-steppe zone of the Central Chernozemic region is 4.18 and 0.022 mg/kg, respectively. In the parent rock (C), the content of As is 1.38 times higher, and Hg is 2.22 times lower than in A. In the agroecosystems of the Belgorod region organic fertilizers are the main source of As and Hg, but this does not pose a danger to soil pollution and crop production. The highest average As content (0.020 mg/kg) was found in winter wheat grains, peas and sunflower seeds, and the lowest (0.016 mg/kg) was found in corn and soybean grains. The highest content of Hg is characterized by barley grains (0.006 mg/kg) and winter wheat (0.007 mg/kg), and the lowest content of this element (0.002 mg/kg) was noted in esparcet hay. Exceeding the levels of maximum allowable concentration of As and Hg for food grains and maximum allowable level for feed products was not revealed in the studies.
FORMATION OF TRACHYTES FROM WANGTIAN’E VOLCANIC NECK OF THE CHANGBAISHAN AREA (NORTHEAST CHINA) AS A RESULT OF THOLEIITIC MAGMA CRYSTAL FRACTIONATION
Authors: Andreeva O. A. , Andreeva I. A. , Usoltseva A. I. , Yarmolyuk V. V. , Kovalchuk E. V. , Averin A. A. , Ji J.-Q. , Zhou X. 
Published: April 2024

Tholeiitic basalts and trachytes of Wangtian’e bimodal association are studied. It is shown that trachytes were formed under the leading role of crystal fractionation of the initial tholeiitic magma. Based on the method of melt and fluid inclusion studies, it was determined that hedenbergite phenocrysts from Wangtian’e volcanic neck crystallized in the temperature range of 1080–1100°С, and plagioclase phenocrysts crystallized at temperatures of 1050–1060°С. After thermometric experiments with melt inclusions in plagioclase from trachytes, in some cases relics of carbonates and carbon dioxide were observed in the inclusions. Trachyte phenocrysts contain hydrous Fe-rich silicate globules and CO2 inclusions containing carbonate phases. Fe-rich silicate globules are often intergrown with titanomagnetite and covered with films of amorphous carbon. A model the appearance of hydrous Fe-rich globules and CO2 inclusions with carbonate relics is proposed. It results due to the silicate-silicate and silicate-carbonate liquid immiscibility processes, that are caused by the evolution of the initial basaltic melt. As the trachyte melt has been risen to the surface, the ferrocarbonate liquid decomposed into magnetite, carbon, and carbon dioxide.
PHASE FORMATION IN THE Mg<sub>3 –</sub> <sub><i>n</i></sub>Ni<sub><i>n</i></sub>BPO<sub>7</sub> SYSTEM
Authors: Smirnova M. N. , Kop’eva M. A. , Nipan G. D. , Nikiforova G. E. , Yapryntsev A. D. , Arkhipenko A. A. 
Published: April 2024

Samples of Mg3 – nNinBPO7 (n = 0–3), synthesized by gel combustion followed by annealing at 980°C and cooled in the inertial-thermal mode, were studied by X‑ray powder diffraction, infrared spectroscopy, and X-ray fluorescence spectrometry. For the first time, the crystalline phase of Ni3BPO7 with the β-Zn3BPO7 structure has been experimentally obtained. When the composition of the samples changed from Mg3BPO7 to Ni3BPO7, a region of coexistence of α‑Mg3BPO7 and β-Ni3BPO7 phases was found. An analysis of the diffuse reflectance spectra of the Mg1.5Ni1.5BPO7 sample showed the presence of Ni2+ cations in an arrangement not symmetric octahedral or tetrahedral.
Some aspects of the abuse of rights in civil and economic proceedings
Authors: Hurtova K. M. 
Published: April 2024

The article is devoted to the analysis of abuse of procedural rights in civil and economic proceedings. The views and approaches to the problem of abuse of rights available in the legal literature are considered.
Based on the review of scientific literature, the conclusion has been made that there are two general theoretical constructs for understanding the concept of “abuse of procedural rights” within the framework of two approaches. The first approach involves the definition of abuse of procedural rights as misuse of procedural rights, and the second approach – as a type of procedural offence. The article analyses the national legislation on the subject matter of the study.
It is argued that the abuse of procedural rights is a certain situation which participants to court proceedings find themselves in, whose rights are violated and are directly related to the rights of the person who abuses them. The exercise of procedural rights is carried out by one party to the dispute within certain limits, as long as it does not contradict the interests of the other party. Violation of these limits leads to the emergence and existence of such a legal phenomenon as abuse of rights.
It is established that abuse of procedural rights means that one of the parties to a dispute, which formally has certain rights, unlawfully exercises them, violating the extent and type of behaviour defined by the procedural law, while taking advantage of the fact that these rights cannot be objectively clearly defined by means of direct prohibitions. In other words, when exercising their rights, the parties to the dispute do not take into account all the actual circumstances and do not take into account the possible harm to each other’s interests.
Attention is drawn to the fact that the diversity of procedural rights in civil and commercial proceedings gives rise to a corresponding number of types of their abuse by the parties to a case. Due to the absence of a clear list in current legislation of the types of abuse of procedural rights and the existence of certain judicial practice in resolving this category of cases, it should be noted that there are various classifications by scholars.
Calidad de asimilación de contenidos de geometría analítica en alumnos de 1er año de Ingeniería en Informática aplicando la teoría de GALPERIN
Authors: Rubén Hugo , Herrera Carlos Gabriel , Rodriguez Norma Leonor , Elena Clara Rita 
Published: April 2024

El trabajo, enmarcado en un proyecto de investigación denominado “Incidencia de un Sistema Didáctico Integrador en la calidad de asimilación de contenidos de Algebra y Geometría Analítica”, tiene los siguientes objetivos: determinar el rendimiento académico de los alumnos período 1999-2005, evaluar la calidad de asimilación de contenidos de la asignatura Geometría Analítica y determinar los contenidos que presentan dificultades en los alumnos para la justificación y generalización de situaciones planteadas de acuerdo a la Teoría de Asimilación de Contenidos deGalperin. En el estudio se considera como población a los alumnos de la cátedra Geometría Analítica, ingresantes a primer año de la carrera de Ingeniería en Informática de la Facultad de Tecnología y Ciencias Aplicada de la UNCa. Desde el punto de vista del diseño de investigación es de tipo descriptivo-correlacional, pues compara el rendimiento académico en el periodo 1999-2005 con la calidad de la asimilación a definida partir de las dimensiones de grado de conciencia (justificación) y de generalización lograda por los alumnos. Los resultados relevantes indican que elporcentaje de alumnos que cumplimentan el cursado de la asignatura oscila del 25 al 40%; de ellos obtienen la condición de regular entre el 50 y el 80 %, disminuyendo dicho porcentaje en los últimos años. En cambio, se incrementa el porcentaje de alumnos regulares que aprueban la asignatura en el período lectivo considerado.Predominan los alumnos con mala calidad de asimilación de contenidos. En cuanto a la relación entre ambas variables, se observa que regularizan la asignatura los alumnos con regular o buena calidad de asimilación de contenidos. Los alumnos presentan dificultades para justificar y generalizar situaciones prácticas, cuando deben establecer interrelación entre los conocimientos teóricos de distintos temas del programa para resolver nuevas situaciones planteadas.
Meningkatkan Keterampilan Guru Membuat Aplikasi Pembelajaran Interaktif Berbasis Android
Authors: Purbohadi Dwijoko , Wijaya Titis Wisnu , Ramadhani Devina Shifra , Putri Nisrina Akbar Rizky , Wulandari Novi Diah 
Published: April 2024

Salah satu daerah yang sedang berkembang di DI Yogyakarta saat ini adalah Kabupaten Kulon Progo. Perkembangan ini dipicu oleh rencana Pemerintah Propinsi DIY untuk membangun kawasan Aeropolitan di sekitar Bandara International Yogyakarta. Perkembangan ini memberikan berbagai dampak, salah satunya pola pikir masyarakat pada layanan pendidikan. Hal ini mendorong setiap sekolah untuk mengikuti perkembangan wilayah dan masyarakat. Banyak sekolah yang membutuhkan kegiatan pelatihan atau upgrading teknologi pembelajaran termasuk sekolah-sekolah Muhammadiyah di Kulon Progo. Hal ini mendorong kami untuk turut berkontribusi membantu mengembangkan sekolah melalui program pengabdian. Program pengabdian ini bertujuan untuk meningkatkan keterampilan guru dilokasi mitra supaya mampu mengoptimalkan multimedia pembelajaran yang bersifat interaktif dan mudah disebarluaskan untuk memberikan pelatihan guru dengan mengoptimalkan media pembelajaran interaktif. Adapun mitra dalam kegiatan ini adalah salah satu sekolah yang masuk dalam area Aeropolitan, yaitu SMP Muhammadiyah 2 Wates. Hasil akhir pengabdian berupa peningkatan wawasan, pengetahuan, dan keterampilan dalam membuat modul interaktif yang disebarluaskan melalui WhatsApp yang akan berdampak langsung pada penggunaan kembali smartphone sebagai sarana belajar. Dengan demikian otomatis terjadi peningkatan durasi penggunaan smartphone oleh siswa sehingga akan terjadi perubahan perilaku siswa dalam menggunakan smartphone untuk belajar.
HPLC-MS/MS method development and validation for the determination of tetradecapeptide in human plasma
Authors: Tokareva M. A. , Melnikov E. S. , Belova M. V. , Fisher E. N. , Rodina T. A. , Shohin I. E. 
Published: April 2024

Introduction. The number of peptide drugs being developed and registered has increased in recent years. Therefore, modern analytical approaches and methods are required to determine these substances in biological matrices during pharmacokinetic studies. Peptides are structurally intermediate between small molecules and biopolymers, making it difficult to develop methods for determining them using High Performance Liquid Chromatography with Tandem Mass Spectrometry (HPLC-MS/MS). Peptide derivatization can help achieve optimal chromatographic separation and increase method sensitivity.Aim. To develop and validate a method for the determination of the tetradecapeptide (TDP) threonyl-glutamyl-lysyl-lysyl-arginyl-arginyl-glutamayl-threonyl-valyl-glutamyl-arginyl-glutamyl-lysyl-glutamate in human plasma by HPLC-MS/MS.Materials and methods. The determination of TDP in human plasma was performed by HPLC-MS/MS. Sample preparation included a combination of blood plasma protein precipitation with propionic acid solution in methanol, liquid-liquid extraction with chloroform, and peptide derivatization with propionic anhydride. Internal standard (IS) was threonyl-glutamyl-lysyl-lysyl-arginyl-arginyl-glutamayl-threonyl-leucyl-glutamyl-arginyl-glutamyl-lysyl-glutamate. Chromatographic separation was performed in gradient mode, eluent A was 0.1 % formic acid solution in water, eluent B was 0.1 % formic acid in acetonitrile. Column: Waters XBridge C18, 4.6 × 50 mm, 5 µm. Ionization source was electrospray in positive mode. Multiple reaction monitoring (MRM) transitions for 4-substituted TDP propionate were: 681.30 → 73.95 m/z, 681.30 → 84.00 m/z, 681.30 → 101.90 m/z, 681.30 → 140.10 m/z, and for 4-substituted IS propionate: 686.00 → 74.10 m/z, 686.00 → 84.05 m/z, 686.00 → 102.00 m/z, 686.00 → 140.00 m/z.Results and discussion. Validation of the developed method was carried out in accordance with the requirements of Eurasian Economic Union and the following parameters were determined: selectivity, matrix effect, calibration curve, accuracy and precision, recovery, lower limit of quantification, sample carryover, stability.Conclusion. The method for the determination of TDP in human blood plasma by HPLC-MS/MS was developed and validated. The analytical range was 5.00–1000.00 ng/mL, allowing the method to be used to study TDP pharmacokinetics.
Accuracy of continuous glucose monitoring during exercise-related hypoglycemia in individuals with type 1 diabetes
Authors: Maytham Kaisar , Hagelqvist Per G. , Engberg Susanne , Forman Julie L. , Pedersen-Bjergaard Ulrik , Knop Filip K. , Vilsbøll Tina , Andersen Andreas 
Published: April 2024

BackgroundHypoglycemia is common in individuals with type 1 diabetes, especially during exercise. We investigated the accuracy of two different continuous glucose monitoring systems during exercise-related hypoglycemia in an experimental setting.Materials and methodsFifteen individuals with type 1 diabetes participated in two separate euglycemic-hypoglycemic clamp days (Clamp-exercise and Clamp-rest) including five phases: 1) baseline euglycemia, 2) plasma glucose (PG) decline ± exercise, 3) 15-minute hypoglycemia ± exercise, 4) 45-minute hypoglycemia, and 5) recovery euglycemia. Interstitial PG levels were measured every five minutes, using Dexcom G6 (DG6) and FreeStyle Libre 1 (FSL1). Yellow Springs Instruments 2900 was used as PG reference method, enabling mean absolute relative difference (MARD) assessment for each phase and Clarke error grid analysis for each day.ResultsExercise had a negative effect on FSL1 accuracy in phase 2 and 3 compared to rest (ΔMARD = +5.3 percentage points [(95% CI): 1.6, 9.1] and +13.5 percentage points [6.4, 20.5], respectively). In contrast, exercise had a positive effect on DG6 accuracy during phase 2 and 4 compared to rest (ΔMARD = -6.2 percentage points [-11.2, -1.2] and -8.4 percentage points [-12.4, -4.3], respectively). Clarke error grid analysis showed a decrease in clinically acceptable treatment decisions during Clamp-exercise for FSL1 while a contrary increase was observed for DG6.ConclusionPhysical exercise had clinically relevant impact on the accuracy of the investigated continuous glucose monitoring systems and their ability to accurately detect hypoglycemia.
Impacts of altitude on plant green leaf, fresh litter, and soil stoichiometry in subtropical forests
Authors: Zhu Dehuang , Zhou Yan , Peng Suhong , Hua Weiping , Luo Bin , Hui Dafeng 
Published: April 2024

BackgroundEcological stoichiometric characteristics of carbon (C), nitrogen (N), phosphorus (P), and potassium (K) serve as crucial indicators of nutrient cycling and limitation in terrestrial ecosystems. However, our current understanding of stoichiometric characteristics in subtropical forests and their response to different climate conditions is still limited.MethodsWe selected six altitudes ranging from 700 m to 1,200 m to simulate different climate conditions of an evergreen broadleaf forest in Wuyi Mountain, Fujian Province, China. We investigated C, N, P, and K stoichiometry and homeostasis in the green leaves, newly senesced leaf litter (fresh litter), and soil of this forest.ResultsLeaf P and K levels showed a decline with increasing altitude. Notably, the stoichiometric ratios in different components exhibited a bimodal distribution along the altitudinal gradient. Additionally, a decline trend of N resorption efficiencies was observed as altitude increased. Moreover, weak homeostasis was observed in P and K in green leaves. These findings highlighted the significant impact of altitude on the stoichiometry in evergreen broadleaf forest. This study also contributed to our understanding of the nutrient cycling mechanism and plant growth strategies of evergreen forests under different climate conditions.
The glycosaminoglycan-binding chemokine fragment CXCL9(74–103) reduces inflammation and tissue damage in mouse models of coronavirus infection
Authors: Oliveira Vivian Louise Soares , Queiroz-Junior Celso Martins , Hoorelbeke Delphine , Santos Felipe Rocha da Silva , Chaves Ian de Meira , Teixeira Mauro Martins , Russo Remo de Castro , Proost Paul , Costa Vivian Vasconcelos , Struyf Sofie , Amaral Flávio Almeida 
Published: April 2024

IntroductionPulmonary diseases represent a significant burden to patients and the healthcare system and are one of the leading causes of mortality worldwide. Particularly, the COVID-19 pandemic has had a profound global impact, affecting public health, economies, and daily life. While the peak of the crisis has subsided, the global number of reported COVID-19 cases remains significantly high, according to medical agencies around the world. Furthermore, despite the success of vaccines in reducing the number of deaths caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), there remains a gap in the treatment of the disease, especially in addressing uncontrolled inflammation. The massive recruitment of leukocytes to lung tissue and alveoli is a hallmark factor in COVID-19, being essential for effectively responding to the pulmonary insult but also linked to inflammation and lung damage. In this context, mice models are a crucial tool, offering valuable insights into both the pathogenesis of the disease and potential therapeutic approaches.MethodsHere, we investigated the anti-inflammatory effect of the glycosaminoglycan (GAG)-binding chemokine fragment CXCL9(74-103), a molecule that potentially decreases neutrophil transmigration by competing with chemokines for GAG-binding sites, in two models of pneumonia caused by coronavirus infection.ResultsIn a murine model of betacoronavirus MHV-3 infection, the treatment with CXCL9(74-103) decreased the accumulation of total leukocytes, mainly neutrophils, to the alveolar space and improved several parameters of lung dysfunction 3 days after infection. Additionally, this treatment also reduced the lung damage. In the SARS-CoV-2 model in K18-hACE2-mice, CXCL9(74-103) significantly improved the clinical manifestations of the disease, reducing pulmonary damage and decreasing viral titers in the lungs.DiscussionThese findings indicate that CXCL9(74-103) resulted in highly favorable outcomes in controlling pneumonia caused by coronavirus, as it effectively diminishes the clinical consequences of the infections and reduces both local and systemic inflammation.