bluuebunny/crossref_metadata_2025 huggingface dataset:
Agronomic performance of quinoa cultivars in two locations of Colombia
Authors: Daza Nicolás Esteban R , Hernández Elsa Helena M , Morillo Ana C
Published: February 2025

ABSTRACT Quinoa is a pseudocereal of great importance because of its nutritional content, great adaptability and broad genetic variability. In Colombia, genetic studies on quinoa are scarce, and there are no certified varieties. Rather, varietal mixtures that affect grain quality and, therefore, postharvest and marketing processes grow in the field. The objective of this study was to carry out a morphoagronomic characterization of five quinoa cultivars under field and greenhouse conditions in Tunja-Boyacá using 21 qualitative and quantitative descriptors, estimating their variation with descriptive, multivariate, and cluster analyses. The results show a high phenotypic segregation among cultivars, where yield, diameter, and panicle length were the quantitative variables with greater variation both in the field and in the greenhouse. The multivariate analysis showed that 72.54% of the variance observed in the greenhouse and 75.20% in the field were explained by the first two components, where plant height, stem diameter, panicle density and color, and stem color were discriminating variables. In the field and in the greenhouse, three groups of cultivars were formed according to the yield and desirable morphoagronomic characteristics. Finally, under the present environmental conditions, the more promising quinoa materials for a breeding program were Blanca Subachoque and Tunkahuan.
Parque das Neblinas: an important reserve for Atlantic Forest bird conservation in Southeast Brazil
Authors: Schunck Fabio , Rennó Bruno , Godoy Fernando I. de , Baudet Gérard , Rodrigues Kleber E. , Sigrist Tomas , Bokermann Marcelo
Published: February 2025

ABSTRACT The Atlantic Forest has one of the richest avifaunas in the world, with endemic, migratory and endangered taxa. However, some of the ornithological knowledge produced there has yet to be organized and published, hindering effective conservation actions. For example, a study concluded in 2005 documented 213 species for Parque das Neblinas (PN), a private reserve located in the Serra do Mar in the state of São Paulo, Brazil, but there has been no update since. We retrieved, organized, and technically evaluated ornithological data produced for PN over the last 20 years, including that from articles, online platforms, occasional lists and a systematic inventory logging 250 field hours. Data consolidation resulted in 293 bird species for PN, including 88 endemic and nine threatened with extinction. Two-hundred and fifty-seven species were recorded by different researchers and bird observers while 141 were recorded by the field inventory, which added 24 species to the total list, showing great potential for new research. The PN bird community is typical of the São Paulo plateau, with the occurrence of species from coastal lowlands as well as drier areas in the interior, and represents an important area for the conservation of Atlantic Forest birds that is also suitable for bird observation and photography.
Microcrustaceans structure determined by the type and trophic state of lakes
Authors: Nogueira Bharguan Pizzol , Moreira-Silva Camila , Marigo Thaís Coimbra , Perbiche-Neves Gilmar
Published: February 2025

Abstract: Aim In this study, we investigated the response of microcrustaceans composition, diversity and abundance (Cladocera and Copepoda) to the lake’s origin (natural and man-made) and trophic state (mesotrophic and eutrophic, with natural eutrophication and artificial eutrophication). We tested the following hypotheses: (I) the increase in the abundance of certain microcrustacean species may indicate a rise in the trophic level; (II) the richness and abundance vary amongst lakes and are higher in the lake with natural eutrophication; and (III) the microcrustaceans abundance is associate with high primary productivity, being higher in the eutrophic environment with artificial eutrophication. Methods The study was conducted in a segment of the Paranapanema River basin, in southeastern Brazil, focusing on five lakes spanning an eight-kilometer stretch, to understand the different organisms' responses to distinct conditions of aquatic environments. Sampling was carried out bimonthly over the course of a year. Results A principal component analysis (PCA) separated three types of lakes: eutrophic (natural and man-made) to mesotrophic. Additionally, 25 taxa were found. SIMPER analysis filtered six species with more than 70% dissimilarity contribution. Five species exhibited differences amongst the lakes, one species correlated with natural variables as depth. The redundancy analysis associated the Bosminopsis deitersi abundance with man-made eutrophic lakes and with the variables electrical conductivity, phosphorus, nitrogen, chlorophyll-a, and hardness. High abundances of B. deitersi indicated artificial eutrophication especially in man-made lakes, while natural lakes with natural eutrophication were not favorable environments for the increase of B. deitersi abundance. Conclusions This study highlights the neotropical oxbow lakes, emphasizing the significance of physicochemical characterization, detailed temporal sampling, and lake classification by origin and trophic level.
História do Estado Regulatório Contemporâneo: Origens, Contexto, Práticas, Bases Filosóficas, Instrumentos e Repercussões
Authors: Muller Rafael
Published: February 2025

Este artigo analisa as relações entre o Estado Regulatório, sistema financeiro e desenvolvimento nacional. Metodologicamente, com revisão de literatura e pesquisa documental, faz-se recorte histórico e político – as dinâmicas do poder de condução das políticas econômicas no país desde a década de 60 até a contemporaneidade. Os resultados apontam que as agências reguladoras são instrumentos liberalizantes criados após transição negociada da ditadura militar para a democracia, com notória influência dos serviços de inteligência estrangeiros (Agência Central de Inteligência norte-americana) e instituições bancárias privadas estrangeiras e tendo como ponte a dívida pública externa (assumida pelos militares e internalizada pelos civis). Esta, usada como argumento de pressão, forçou privatizações, legitimadas pela criação das agências. Conclui-se que a inclusão das teorias regulatórias na microeconomia, considerando governo, usuários e empresas setoriais, acaba por ocultar o poder do sistema financeiro estrangeiro como decisor, cuja disposição de investir decorre de condições macroeconômicas e internacionais.
Modeling of the quantum dynamics of frustrated networks of Josephson junctions
Authors: Burtsev P. S. , Migdisov R. A. , Maleeva N. A. , Fistul M. V.
Published: February 2025

We report a theoretical study of the macroscopic quantum dynamics in frustrated networks of interacting Josephson junctions (f-NJJs). We consider two exemplary types of f-NJJs: quasi-1D sawtooth arrays and 2D Kagome lattice of small (quantum) Josephson junctions. The frustration is provided by periodically arranged 0- and π-Josephson junctions. In the frustration regime the clockwise (anticlockwise) persistent currents penetrate each basic cell, i.e., three superconducting islands connected by Josephson junctions. Collective quantum dynamics of persistent currents is described by the effective interacting spins Hamiltonian where we take into account the quantum superposition of persistent currents in a single cell induced by the macroscopic quantum tunneling of Josephson phases and a long- range interaction between persistent currents. Two types of interaction are discussed: charge interaction between superconducting islands in sawtooth arrays and topological constraints in Kagome lattice. We demonstrate that the long-interaction between spins in these f-NJJs allows one to realize the various collective quantum phases with a large quantum entanglement. We anticipate that f-NJJs can be a perspective platform for modeling complex strongly correlated electronic solid state, molecular, and biological systems, as well as frustrated magnetic systems.
Latino Immigrants and their Perceptions of Religious Institutions: Cubans, Salvadorans and Guatemalans in Phoenix, Arizona
Authors: Menjívar Cecilia
Published: February 2025

Basado en trabajo de campo cualitativo y entrevistas con 54 inmigrantes, esteartículo compara el lugar que ocupan las instituciones religiosas en las vidas de losinmigrantes guatemaltecos, salvadoreños y cubanos en Phoenix, Arizona. La igle-sia siempre ha ocupado un lugar destacado en las vidas de los inmigrantes, pero notodos —ni siquiera todos los latinos— comparten las mismas visiones y experien-cias. Las diferencias más notables se presentan entre los cubanos, por un lado, y lossalvadoreños y guatemaltecos, por otro. Este ensayo muestra que para los inmi-grantes el lugar de las instituciones religiosas y sus actividades están íntimamenteligados a los contextos de salida en sus países de origen y de destino en los EstadosUnidos.
β-Galactosidase staining v1
Authors: Jose Perez J. Maria
Published: February 2025

β-Galactosidase staining
Multiplex cytokine array analysis v1
Authors: Jose Perez J. Maria
Published: February 2025

Multiplex cytokine array analysis
Measurement of protein aggregation with PROTEOSTAT v1
Authors: Jose Perez J. Maria
Published: February 2025

Measurement of protein aggregation with PROTEOSTAT
Western blot v1
Authors: Jose Perez J. Maria
Published: February 2025

Western blot
Generation of human iPSC-derived tricultures v1
Authors: Jose Perez J. Maria
Published: February 2025

Generation of human iPSC-derived tricultures
Novel Motion Planning Strategy with Fuzzy Logic for Improving Safety in Autonomous Vehicles in Response to Risky Road User Behaviors
Authors: Pohan Muhammad Aria Rajasa , Utama Jana , Herdiana Budi
Published: February 2025

This study aims to propose a new motion planning strategy for autonomous vehicles (AV) using fuzzy logic to improve safety. The strategy mitigates risky behaviors of other road users, such as zigzagging vehicles, sudden braking, pedestrians emerging from blind spots, and responding to sudden lane changes. The proposed method combines a novel fuzzy inference system and a configuration space map with adaptive dynamic object bounding boxes. These bounding boxes adjust in size according to the risk level of the dynamic object's movement. The simulation test was conducted using four scenarios involving risky behavior from other road users. The proposed method was compared with conventional methods, with safety costs used to measure performance. The results showed that the proposed algorithm achieved better safety costs across all four scenarios; this improvement is due to the integration of the fuzzy system with the adaptive configuration space map, which accounts for uncertainties. These findings suggest that the proposed method improves AV motion planning safety in dynamic and unpredictable environments. This research contributes to developing safer, more reliable autonomous driving systems.
In Vitro Antioxidant Properties of Lactobacillus gasseri Isolated from Fermented Milk: Isolation and Preparation of Strains and Intracellular Cell-Free Extracts, Chemical Testing (Hydrogen Peroxide, Superoxide, Hydroxyl Radical, DPPH, Ferrous Ion Chelating, and Linoleic Acid Peroxidation)
Authors: Sellam A. , Zerrouki Y. , Dali M. , Maleb A. , Khalid I. , Hamdaoui N. , Hammouti Belkheir , Meziane M.
Published: February 2025

Among the most accepted hypotheses that can explain the causes of aging, we found the theory of free radicals in Lactobacillus gasseri strains. We did screen the antioxidative properties of Lactobacillus gasseri strains isolated from fermented milk. The results showed the most resistant strains against hydrogen peroxide with excellent superoxide anion radicals scavenging capacity. The results were also supported by DPPH free radical scavenging ability. We also found the greatest ferrous chelation capacity (reaching 88%). The tested strains demonstrated anti-lipid peroxidation levels ranging between 30 and 66%. The results suggest that L.gasseri could be used as an effective antioxidant to fight against diseases related to oxidative stress.
Soft Coral Epibiotic Bacteria Vibrio alginolyticus from Sarangani Bay, Mindanao Philippines as Potent Source of Antibacterial Agent
Authors: Razon Brando Cabigas
Published: February 2025

This study aims to explore the antibacterial properties of the different epibiotic bacterial species thriving in the surface tissues of the soft corals, and their potential application in developing novel antibacterial agents. There were ten soft coral species randomly collected from Sarangani Bay in Mindanao, Philippines: 3 sarcophyton sp., two sinularia sp., 1 nepthia sp., 1 stenonephthya sp., 1 anthelia sp., 1 lithophyton sp. and 1 asteropicularia sp. All soft coral species collected harbored epibiotic bacteria. Fifteen epibiotic bacterial species were isolated and tested for antibacterial properties against Staphylococcus aureus (gram-positive) and Escherichia coli (gram-negative) as test organisms. Their respective zones of inhibition were compared to that of the commercial antibiotics Penicillin, Chloramphenicol, and Gentamycin (as positive controls). Results indicated varied antibacterial effects, with one isolate, Vibrio alginolyticus (EB6), showing significant activity, with the zone of inhibition of 9.33 mm against E. coli, comparable to that of Chloramphenicol and Gentamycin, with the zone of inhibition of 10 and 9 mm, respectively. These findings highlight the potential of marine-derived bacteria in developing new antibacterial agents.
How to Calculate and Determine Chemical Kinetics: Step-by-Step Interpretation of Experimental Data to Get Reaction Rate and Order
Authors: Nandiyanto Asep Bayu Dani , Ragadhita Risti , Fiandini Meli
Published: February 2025

Chemical kinetics is a fundamental field of study that focuses on the rates of chemical reactions and the factors influencing them. Determining the rate and order of the chemical reaction is an important aspect of understanding the reaction mechanism. This article presents a step-by-step guide to calculate and determine the rate and order of the reaction through a comprehensive analysis of experimental data. We discussed the concept of chemical kinetics, the integration of the kinetic order method, and the curve-fitting analysis technique. Several case studies are also included to provide practical applications of the theory outlined. This proposed guide aims to provide students, educators, researchers, and practitioners with a systematic approach to specify and verify prospective kinetic models, enabling them in decision-making, improving, and optimizing chemical reaction processes.
Comprehensive Characterization of Gelatin Films from Goat Skin Incorporating Konjac Glucomannan: Physical, Mechanical, and Molecular Properties
Authors: Hasdar Muhamad , Nalinanon Sitthipong , Kittiphattanabawon Phanat , Sriket Chodsana
Published: February 2025

This study aimed to comprehensively investigate and characterize the physical, mechanical, and molecular properties of gelatin films made from goat skin incorporated with konjac glucomannan. The study involved three treatment groups, labeled GG/KG1, GG/KG2, and GG/KG3, which included konjac glucomannan at concentrations of 0, 10, and 20% (w/w), respectively. Glycerol at 20% (w/w) was also included as a plasticizer. All samples underwent homogenization and ultrasonic treatment. The addition of konjac glucomannan to the gelatin-based film resulted in changes such as increased thickness (0.033 - 0.093 mm), opacity (0.9910 - 1.0433 mm-1), color L* (92.45 - 92.77), color difference (48.13 - 48.38), swelling (65.53 - 69.47%), and contact angle (86.92 - 127.85o). Conversely, a decrease was observed in water activity (0.521 - 0.463 Aw), moisture content (9.87 - 9.62%), tensile strength (0.0171 - 0.0118 N/mm2), elongation at break (5.91 - 4.52%), young’s modulus (0.0029 - 0.0026 N/mm²), WVTR (118.99 - 116.82 g/m². day), transparency (81.59 - 67.33%), and water resistance (34.47 - 30.53 %). Additionally, the peaks of amides A, B, I, II, and III exhibit both a shift and an increase in intensity, suggesting structural modifications and molecular interactions. The microstructure also indicated the presence of goat skin gelatin and konjac glucomannan cross-linked in the film formation. Therefore, the addition of konjac glucomannan modifies gelatin-based films, enhancing their suitability for food packaging.
Research Trends in Wireless Communications Using Graphene: Research Trajectories in Antenna Applications
Authors: García-Pineda Vanessa , Zapata-Ochoa Edison Andrés , Arias Alejandro Valencia , Molina Oscar David Ossa , Giraldo Francisco Eugenio López
Published: February 2025

Communications require a large amount of network resources to support the heavy traffic generated by the Internet of Things (IoT). As a result, microelectronics and telecommunications have been exploring types of hardware capable of supporting these new network architectures and communication systems. New devices should be designed to offer high speed, ultra-wideband connectivity, and extensive coverage. In addition, they should use eco-friendly materials to respond to the needs of sustainable smart cities and meet the requirements of future communications. This literature review followed the PRISMA statement to identify research trends in the use of graphene in antennas for wireless communication applications. A total of 168 documents were analyzed, and one of the main findings is a considerable rise in research interest in this topic since 2012, with India emerging as the leading contributor of knowledge in this area. Furthermore, most applications have been developed for the terahertz band, and more recent studies have focused on utilizing MIMO technologies for 5G and 6G communication systems. In addition, most research has observed improvements in the performance and efficiency of antennas designed with graphene, observing in some results up to 9.35 dBi of gain and 97.6% in radiation efficiency for applications in the terahertz band.
Rancang Bangun Aplikasi Homecare Poliklinik Berbasis Mobile Pada Klinik Munjul Jaya Purwakarta
Authors: Riskandar Mohamad Facahya
Published: February 2025

Kemajuan teknologi saat ini tidak bisa dipisahkan dari kehidupan masyarakat. Saat ini, di Indonesia dapat kita saksikan begitu besar pengaruh kemajuan teknologi terhadap nilai - nilai kebudayaan yang di anut masyarakat, baik masyarakat perkotaan maupun pedesaan (modernisasi). Kemajuan teknologi seperti televisi, telepon dan telepon genggam (handphone), bahkan internet bukan hanya melanda masyarakat kota, namun juga telah dapat dinikmati oleh masyarakat dipelosok - pelosok desa. Perkembangan teknologi handphone yang semakin hari semakin pesat, baik dari segi kehandalan, fasilitas, kualitas produk maupun dari segi pelayanannya yang terus menerus ditingkatkan dapat menimbulkan perhatian masyarakat sehingga masyarakat punya kesempatan untuk bisa menikmati kualitas produk handphone yang mereka inginkan. Namun pada saat ini dikarenakan adanya wabah virus corona 2019 sampai dengan saat ini 2022 virus tersebut masih berjalan. segala aktifitas masyarakat sangat terbatas. Masyarakat yang hendak berobat pada klinik munjul jaya purwakarta sangat dibatasi jumlah pasiennya. Itu sangat menjadi masalah yang besar bagi masyarakat. Klinik munjul jaya purwakarta membutuhkan pelayanan Kesehatan homecare tanpa harus datang ke lokasi. Hal ini dapat membebani kesehetan pasien dan juga membuang waktu dan tenaga. Bahkan dengan kondisi tubuh yang kurang sehat sangat tidak dianjurkan untuk memaksakan diri untuk datang ke lokasi. Dengan adanya solusi ini, masyarakat berhak mendapatkan pelayanan Kesehatan dirumah dan juga menghindari kerumunan ditempat umum karena itu adalah salah satu faktor penyebaran virus corona 2019.
DEVELOPMENT OF E-JOBSHEET FOR REFRIGERATION INSTALLATION BASED ON SKKNI
Authors: Huda Ahmad Khoirul , Setiodi Wempi , Koswara Anjar
Published: February 2025

The purpose of this research is to create an SKKNI-based e-jobsheet in the subject of refrigeration installation systems that are feasible to use based on the assessment of media experts, material experts and measure student learning outcomes in the cognitive, psychomotor and affective domains and determine user response. The research method used is RnD by following the ADDIE model. The research sample taken was 31 students of class XI TPTUP. The instruments used in this study were expert validation sheets, pretest and posttest sheets, psychomotor and affective observation sheets, and user response questionnaires. The results of the feasibility assessment conducted showed that the e-jobsheet developed was categorized as "very feasible" according to media experts and material experts. The results of the media user response were categorized as "positive". The learning outcomes of cognitive aspects have increased as measured by the N-gain value of 0.58 which is categorized as moderate. Learning outcomes of psychomotor aspects amounted to 3.05% and cognitive aspects 2.15%, then positive responses from e-jobsheet users. The conclusion of this study is that e-jobsheet learning media is very feasible to use in refrigeration maintenance and repair material.
THE INFLUENCE OF INDUSTRIAL INTERNSHIP AND SELF-EFFICACY ON STUDENT WORK READINESS OF HVACR ENGINEERING COMPETENCY
Authors: Pratama Rizqie Akbar , Putra Ragil Randi Ratmaja
Published: February 2025

Vocational High School (SMK) graduates are graduates who have the highest Open Unemployment Rate (TPT) among other levels of education. Low work readiness is one of the contributing factors. The purpose of this study was to analyze the influence of industrial internship and self-efficacy on students work readiness. The method used in this study was ex-post facto with a quantitative approach. The data collection technique used a questionnaire with a value range between 1 to 5 likert scale models. Respondents in this study were grade XII students of Heating, Ventilation, Air Conditioning and Refrigeration (HVACR) Engineering Competency at SMKN 8 Bandung. This study consisted of three variables, namely industrial internship (X1), self-efficacy (X2) and students work readiness (Y). The data analysis technique used was multiple regression analysis. The results showed that internship and self-efficacy had a positive and significant effect on students work readiness. Therefore, students work readiness can be through the improvement of industrial internship program and self-efficacy.
Motivasi dan Kepercayaan Diri Atlet Pelatda PON XX Rugby Jawa Barat
Authors: Hidayatullah Arif
Published: February 2025

Motivasi beserta kepercayaan diri dari seorang atlet merupakan hal yang penting, karena motivasi berguna mendorong atlet tersebut agar melakukan hal yang menjadi tujuannya dan sedangkan kepercayaan diri berguna memberikan rasa yakin terhadap atlet agar melakukan hal apapun secara maksimal. Penelitian ini bertujuan untuk mengetahui bagaimana motivasi dan kepercayaan diri atlet dalam menjalani program PELATDA PON XX Rugby Jawa Barat. Metode yang digunakan dalam penelitian ini adalah metode deskriptif dengan pendekatan  naturalistik kualitatif. Partisipan pada penelitian ini adalah pelatih beserta atlet dari PELATDA rugby yang berjumlah delapan orang. Teknik pengambilan partisipan disini menggunakan purposive sampling. Instrumen pada penelitian ini yaitu peneliti sendiri dengan menggunakan teknik pengumpulan data wawancara dan dokumentasi. Hasil penelitian ini menunjukkan bahwa faktor motivasi intrisik yang mendorong atlet dalam menjalankan PELATDA ini yaitu minat dan bakat atlet memiliki tingkatan sebesar 37,5%, pengetahuan memiliki tingkatan sebesar 25%, harga diri memiliki tingkatan sebesar 25%, dan aktualisasi diri sebesar 12,5%. Selain itu faktor motivasi ekstrinsik tersebut berupa pelatih memiliki tingkatan sebesar 100%, orang tua sebesar 100%, sarana dan prasarana sebesar 100%, lingkungan sebesar 100%, kompetisi dengan teman sebesar 25%, reward sebesar 25%, metode latihan 100%. Sedangkan dari segi kepercayaan diri atlet, meliputi faktor internal yang dapat menumbuhkan kepercayaan diri atlet berupa pengalaman sebesar 50%, kondisi fisik sebesar 37,5%, dan konsep diri sebesar 50%. Selain itu ada juga faktor eksternal yang dinyatakan para informan berupa faktor persuasi verbal memiliki tingkatan sebesar 50%, dan faktor lingkungan memiliki tingkatan sebesar 62,5% terhadap kepercayaan diri atlet tersebut.
Analisis Latihan Circuit Training Terhadap Daya Tahan Pemain Rugby
Authors: Silalahi Nice Sine
Published: February 2025

Daya tahan yaitu kemampuan seseorang untuk beraktifitas pada jangka waktu yang lama tanpa merasakan kelelahan yang berarti. Pemain rugby di kampus UPI Sumedang masih banyak yang memiliki daya tahan yang kurang baik dimana nantinya akan berpengaruh pada saat pertandingan. Atas dasar permasalahan tersebut Pada penelitian ini peneliti akan mengkaji tentang program latihan circuit training untuk meningkatkan daya tahan pemain rugby. Karena pada dasarnya daya tahan sangatlah penting untuk menjaga kondisi fisik selalu dalam keadaan bugar. Oleh karena itu penelitian ini bertujuan untuk meningkatkan daya tahan fisik pemain rugby melalui program latihan circuit training. Penelitian ini menggunakan metode studi literatur. Teknik pengumpulan data dalam penelitian ini adalah dengan cara mengumpulkan data dari berbagai sumber seperti buku, jurnal, skripsi dan sumber yang terkait dengan ilmu yang di teliti. Dari studi literatur ini menghasilkan bahwa penggunaan latihan circuit training  berpengaruh terhadap daya tahan.
EVALUACIÓN DE LAS PROPIEDADES DE MEZCLAS BINARIAS DE POLIOLEFINAS MIXTAS Y PLA POSCONSUMO CON POLIPROPILENO RECICLADO
Authors:   Universidad de Antioquia, Pérez Diana Lucía , Gartner Vargas Carmiña ,   Universidad de Antioquia
Published: February 2025

Actualmente es común encontrar mezclas de poliolefinas recicladas en las industrias que reprocesan polímeros, ya que por sus propiedades químicas y físicas similares se dificulta su recolección y clasificación diferenciada de la gran cantidad de estos materiales presentes en la corriente de polímeros posconsumo. En este sentido, resulta útil estudiar mezclas de poliolefinas mixtas recicladas (MPOr) para obtener información acerca de su comportamiento térmico, reológico y mecánico y así determinar la compatibilidad de las mezclas, lo que será de interés para desarrollar un procesamiento más eficiente que permita mejorar las propiedades, con el fin de otorgarles un valor comercial y facilitar el proceso de reciclaje. Es así como el objetivo de este trabajo es estudiar las propiedades de mezclas de MPOr sin agentes compatibilizantes y además con PLAr, como una alternativa para los desechos de la impresión 3D, en constante crecimiento en las últimas décadas. Por tal motivo, se realizaron mezclas binarias de polipropileno reciclado (PPr) con MPOr y con PLA en proporciones de 20, 40, 60 y 80% en peso usando una extrusora de doble husillo. Por espectroscopía infrarroja (IR), calorimetría diferencial de barrido (DSC), medidas del índice de fluidez (MFI) y pruebas de tracción, se determinaron las propiedades de cada mezcla. Los resultados revelaron que, si bien no había miscibilidad, algunas mezclas exhibieron cierto grado de compatibilidad y se observó un aumento de la resistencia a la tracción.
Overshadowed By Royal Roads: Vocationally Oriented Middle Schools as Pathways to Higher Education in Switzerland
Authors: Esposito Raffaella Simona
Published: February 2025

In Switzerland, four different educational pathways lead to higher education (HE): baccalaureate schools, upper‐secondary specialized middle schools, vocational middle schools, and dual vocational education and training (VET) combined with a federal vocational baccalaureate. The four pathways are not equally supported by Swiss education policy: Baccalaureate schools and dual VET plus a federal vocational baccalaureate are politically treated as the two royal roads to HE, while specialized middle schools and vocational middle schools, in this study grouped under the term vocationally oriented middle schools (VOMS), receive only little political attention. This holds true even though VOMS have a high transition rate to HE and are considered to have the potential to bring young women into male‐typical HE programs and attract high‐achieving youths with a migration background. The study investigates from a governance perspective how (in practices and processes) the conception of the royal roads to HE is constructed and reproduced as well as how this affects the positioning of VOMS as pathways to HE in Switzerland. The study refers to the theoretical framework of the sociology of conventions and the concept of valuation practices. The data basis consists of publicly available documents and qualitative interviews. The findings show that commensurations, categorizations, visualizations, and the interplay between a variety of human and non‐human actors reinforce two highly stable and powerful cognitive formats of royal roads to HE. At the same time, these same practices construct an image of VOMS as less significant additional pathways to HE by rendering their qualities and potentials as such pathways comparatively invisible or tabooing them in the service of educational policy interests. With these findings, the present study contributes to the international scholarly discussion on permeability between VET and HE.
Multimodal monitoring in carotid endarterectomy
Authors: Lukyanchikov V. A. , Chupalenkov S. M.
Published: February 2025

Patients with carotid artery stenosis have high risk of ischemic stroke. Carotid endarterectomy is the method of choice for ischemic stroke prevention in patients with symptomatic and asymptomatic carotid artery stenosis. Such stages of carotid endarterectomy as selection, artery clamping, and placement of a temporary intraluminal shunt can be accompanied by ischemic complications due to embolism and insufficient collateral blood flow. Multimodal intraoperative neurophysiological monitoring consisting of cerebral oximetry, somatosensory and motor evoked potentials monitoring,electroencephalography, and transcranial Doppler ultrasound allows to perform direct and indirect monitoring of cerebral perfusion during the whole surgery and can be used for prediction of surgical outcomes. Multimodal approach to intraoperative neurophysiological monitoring is the most sensitive and specific approach for predicting and minimizing postoperative neurologic deficit.
Comment on the article “The role of innate and adaptive immunity in Wallerian degeneration in peripheral nerve crush injury”
Authors: Gushcha A. O.
Published: February 2025

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Surgical treatment of patients with hypertensive intracerebral hematomas in the Republic of Tatarstan
Authors: Yachkurinskikh M. M. , Danilov V. I.
Published: February 2025

Background. Over time as a result of improved surgical techniques, the emergence of new minimally invasive methods of intracerebral hematoma evacuation and more careful selection of patients potential for surgery, surgical treatment of hypertensive intracerebral hematoma has taken its niche in modern neurosurgery.

   Aim. To study the results of surgical treatment of patients with hypertensive intracerebral hematomas in the Republic of Tatarstan.

   Materials and methods. The retrospective multi-center study included data from 1127 patients with hypertensive intracerebral hemorrhages from 4 regional and 14 primary vascular centers in the Republic of Tatarstan for 2022, 87 patients were operated.

   Results. Among surgical methods the share of the open method was 64,4 %, endoscopic 32,2 %, external ventricular drainage / ventriculoperitoneal shunt implantation 3,4 %. Hospital mortality was 25,3 %. The highest mortality and incidence of recurrent hemorrhages were in patients operated on within the first 8 hours from the onset of symptoms. When comparing comparable groups (in terms of hematoma volume and severity of patients with intracerebral hemorrhage), in the surgical group hospital mortality was 2,9 times lower (22,6 %) than in the conservative group (65,6 %).

   Conclusion. Surgical removal of aggressive hypertensive intracerebral hematoma, at a patient’s severity of 8 points and above on the Glasgow coma helps reduce mortality. Endoscopic removal should be more widely used for deep aggressive haematomas. The optimal time to remove aggressive hypertensive intracerebral hematoma is 8 to 24 hours from the onset of a stroke.
Comment on the article “Surgical treatment of patients with hypertensive intracerebral hematomas in the Republic of Tatarstan”
Authors: Dashyan V. G.
Published: February 2025

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Radiation-induced complication of stereotactic radiosurgical treatment of cavernous malformation of the brain
Authors: Girya E. N. , Evdokimova O. L. , Kochakova A. A. , Tokarev A. S. , Sinitsyn V. E.
Published: February 2025

The aim of the work – to present a case of radiation-induced complication after radiosurgical stereotaxic treatment of cavernous malformation of the brain.

   A patient, 34-year-old, applied to the Radiosurgery Center of the N. V. Sklifosovsky Research Institute for Emergency Medicine with complaints of frequent headaches, general weakness. The magnetic resonance imaging of the brain revealed a deep cavernous malformation in the left hemisphere of the brain. In order to reduce the risk of re-rupture of the cavernous malformation, it is recommended to perform a stereotaxic radiosurgical operation using the Elekta Leksell Gamma Knife Perfexion apparatus. The possibilities of treating cerebral cavernous malformations have significantly expanded with the use of stereotaxic radiosurgery. Radiosurgery is an alternative treatment for symptomatic cavernous malformations in cases of deep-seated lesions in functionally significant areas of the brain, the surgical removal of which is associated with a high risk of worsening neurological symptoms. However, complications after radiosurgical stereotaxic treatment are an urgent problem, and subsequent follow-up with a clinical assessment of the patientʼs condition and neuroimaging requires attention and a multidisciplinary approach.
REVIEW OF THE MEETINGS OF THE UNITED NATIONS OPEN WORKING GROUP ON CYBERSECURITY WITH THE WAR IN UKRAINE AS A BACKGROUND IN 2023
Authors:   Museum of Prominent Figures of Ukrainian Culture of Lesya Ukrainka, Mykola Lysenko, Panas Saksahansky, Mykhailo Starytsky,Kyiv, Ukraine, PETIK Iaroslav
Published: February 2025

Background. The fourth and fifth meetings of the United Nations Open Working Group addressed issues of cybersecurity policy. The process of developing legal mechanisms was complicated by politicized discussions, with Russia participating with its geopolitical interests in mind against the backdrop of the ongoing war in Ukraine.

Methods. The study employed methods such as the analysis of materials, publications, and analytical reports, an interdisciplinary approach (analyzing international law, diplomatic documents, technical aspects of cyber defense, and the geopolitical context), comparative analysis, content analysis of texts, and the use of secondary sources (scientific articles and analytical reports).

Results. The outcomes of the mentioned meetings were reviewed, emphasizing the geopolitical context of the discussions and providing forecasts regarding the development of cybersecurity policy.

Conclusions. The main problematic points in the discussions among different delegations during the Working Group meetings were considered. Both Russia's geopolitical interests regarding cybersecurity policy and some interests of other countries were highlighted. The discussion of cybersecurity issues was linked to problems of political sovereignty and the principle of non-interference, which are important classical issues in international relations. As a conclusion, the necessity of further development of legal norms and mechanisms regulating cybersecurity was postulated.
The art of Nikodem Zubrzycki in Kostiantyn Shyrotsky’s studies on Ukrainian national style
Authors:   National Academy of Fine Arts and Architecture, Kyiv, Ukraine, Derevska Olena
Published: February 2025

The purpose of the article is to focus attention on the personality of Kostiantyn Shyrotsky (1886-1919) and his understanding of Ukrainian national style, as well as his mentioning the art of Nikodem Zubrzycki, a prominent engraver (end of the 17th c.– beginning of the 18th c.).

The research methods included dialectic interdisciplinary approach, biographical and comparative methods, iconographical and formal stylistics analysis.

Being a unique figure in Ukrainian culture, K. Shyrotsky during his short life was engaged in research in the fields of history, archeology, history of art and culture, ethnography, folklore, and local history. Fundamental education, numerous field expeditions allowed the scholar to formulate his vision of the Ukrainian national style regarding religious painting, decorative art, graphics and architecture. The researcher believed that the Ukrainian national style should be based on folk art and national spiritual heritage, but also be relevant to modern European cultural trends.

The personality of N. Zubrzycki and/or his iconography attracted the attention of K. Shyrotsky in author’s numerous works. The engraver worked in key places for Ukrainian culture - Lviv, Univ, Pochaiv, Kyiv, Chernihiv. Zubrzycki depicted not only the religious plots, but also the landscape, animals, and everyday scenes, created a grand series of allegorical images based on the Bible, mythology, philosophy and literature, used European iconography and creatively transformed it, producing in turn prototypes imitated by the Ukrainian and foreign masters.

Zubrzycki has certainly been one of the creators of the Ukrainian national style, for his images were still popular in folk art almost 200 years later, which Shirotsky noted.

The results of our research determine the contribution of N. Zubrytskyi to the development of Ukrainian art, its genre diversity, and the formation of the national style through the vision of Kostiantyn Shyrotsky who was one of the first to note this role of Zubrzycki.

Conclusions. The study allowed to formulate the peculiarities of Ukrainian national style in art which are realism, allegorical sense and moralization, plot modernization and decorativeness, and to demonstrate their presence in the works by N. Zubrzycki.
PERSPECTIVE ON THE MORPHOFUNCTIONAL ARTERIAL CONDUIT SYSTEM CONCEPT USE IN INTERACTION BETWEEN CORONARY ARTERY AND STENT/BALLON
Authors: Frolov Alexey V.
Published: February 2025

Highlights

The review delves into the proposed concept of the morphofunctional arterial conduit system used in open heart surgery.

Based on this concept, the review presents analogous morphofunctional stent/balloon-artery system for endovascular treatment of coronary artery disease.

 

Abstract

 The review article describes potential modeling of the interaction between a stent/balloon and a coronary artery analogous to and based on the previously proposed concept of the morphofunctional arterial conduit system. The system substantiates the advantages and disadvantages of various techniques of coronary artery bypass grafting and should be accounted for when choosing a stent. This interaction during endovascular treatment of coronary artery disease is of great importance for the development of new generation of devices, as well as for the management of various factors involved in the prevention of stent dysfunction and progression of coronary atherosclerosis.
COMPARISON OF IMMEDIATE AND LONG-TERM RESULTS OF TREATMENT OF CRITICAL COARCTATION IN NEWBORNS: STENTING/PRIMARY SURGICAL CORRECTION
Authors: Rzaeva Kseniya A. , Soynov Ilya A. , Arkhipov Alexey N. , Gorbatykh Yuriy N. , Bogachev-Prokophiev Alexander V.
Published: February 2025

Highlights

Critical aortic coarctation (CoA) in newborns leads to severe pressure overload of the left ventricle (LV), myocardial damage, which is accompanied by a high risk of cardiogenic shock and sudden cardiac death. Palliative stenting of the aortic isthmus in critically ill newborns reduces the incidence of mortality in the hospital period and makes it possible to prepare the patient for radical surgical correction of the defect.

 

Aim. To compare immediate and long-term results of palliative stenting and surgical correction of critical aortic coarctation in newborns.

Methods. The single-center, retrospective study was conducted at the National Medical Research Center named after Academician E.N. Meshalkin. From 2008 to 2021, the Department of Congenital Heart Diseases performed surgical treatment of 85 patients with critical aortic coarctation. 11 patients were excluded from the study. All patients included in the study (74 patients) were divided into two groups: palliative stenting (n = 20; 27%) and primary surgery (n = 54; 73%). After PSM analysis, the groups were balanced by age, weight, gender, body surface area and lactate. 40 patients were selected: 20 in each group. There were no significant differences between baseline characteristics between the groups.

Results. The technical success of aortic coarctation stenting was 100%. The lethal outcome in the stenting group was in 2 (10%) cases, while in the primary surgery group it was in 11 (55.5%) cases, p = 0.048. Complications in the early postoperative period were higher in the open surgery group. Long-term complications did not differ between groups and had an equal incidence of development.

Conclusions. Palliative stenting of critical aortic coarctation is associated with lower mortality during hospital stay compared with primary surgical correction (10% vs 55.5%, p = 0.048). Multiple organ failure in the early postoperative period is an independent risk factor (HR 102; 95% CI 3.5–295, p < 0.01) of death. Patients with critical aortic coarctation after primary surgical correction have a higher incidence of early postoperative complications in comparison with patients with palliative stenting (80% vs 40%, p = 0.02). The only risk factor for multiple organ failure (HR 22.8; 95% CI 4.1–302, p = 0.03) and/or acute renal failure (HR 17.6; 95% CI 1.3–238, p = 0.02) is primary surgical correction of the defect. The main risk factor for abdominal syndrome are patients operated with cardiopulmonary bypass (HR 19; 95% CI 4.8–280, p = 0.01). Long-term complications do not differ between groups and have an equal frequency of occurrence.
USE OF POSTOPERATIVE KETAMINE INFUSION FOR CEREBRAL PROTECTION IN CHILDREN IN CARDIAC SURGERY
Authors: Ivkin Artyom A. , Grigoriev Evgeny V. , Balakhnin Dmitry G. , Mikhailova Alyona A.
Published: February 2025

Highlights

The presented study is relevant due to high incidence of cognitive impairment during cardiac surgery in children. The article describes and proves the effectiveness of a cerebral protection strategy using ketamine infusion in subanesthetic doses.

 

Abstract

Aim. To assess the effectiveness of ketamine infusion in the postoperative period for neuroprotection in children during surgical correction of congenital septal heart defects.

Methods. The study included 68 patients aged from 1 to 60 months and weighing from 3.9 to 19.5 kg who underwent correction of atrial or ventricular septal defect with cardiopulmonary bypass. All subjects were randomized into three groups: patients in the study group-1 (SG-1) received ketamine infusion after the completion of surgery and for the next 16 hours at a dose of 0.1 mg/kg/hour; patients in study group-2 (SG-2) received ketamine at a dose of 0.2 mg/kg/hour, and patients in the control group (CG) did not receive ketamine. To analyze the severity of damage to the neurovascular unit, the following specific serum markers were used: S-100-ß, neuron-specific enolase, glial fibrillary acidic protein, occludin and claudin-1. Blood for analysis of marker concentrations was collected at 3 control points: 1 – before the start of the operation, 2 – immediately after completion of cardiopulmonary bypass, 3 – 16 hours after the operation.

Results. The groups were comparable in terms of pre- and intraoperative characteristics. S-100-ß protein in patients who received 0.1 mg/kg/hour ketamine did not differ from controls, but patients who received 0.2 mg/kg/hour ketamine showed statistically significant differences compared to the group with lower concentrations. Neurospecific enolase had lower concentrations in both study groups compared to the controls. Occludin showed a significantly lower concentration only in the group with a ketamine dose of 0.2 mg/kg/hour. Glial fibrillary acidic protein and claudin-1 concentrations did not differ between groups.

Conclusions. The study results showed the effectiveness of using ketamine infusion at a dose of 0.1 and 0.2 mg/kg/hour for cerebral protection in children in the postoperative period of correction of congenital septal heart defects. Moreover, they proved that a ketamine dose of 0.2 mg/kg/hour has a more pronounced neuroprotective effect.
Civil Liability for Neuroprosthesis Damage: Current Problems of Theory and Law Enforcement
Authors: Belova D. A.
Published: February 2025

Conceptual and legal problems arise as a result of the integration of a person with objects of the outside world through neuroprosthetics. Legal norms are differentiated into provisions defining the legal status of persons and the legal regime of objects. In the generally accepted understanding, the bodily boundary separates a person from objects of the outside world, and thus determines law enforcement. The development of neurotechnologies blurs the once clear line between an individual and the objects surrounding him, between the subject and the object of a legal relationship. As a result of the commission of an illegal harmful action against a neuroprosthesis, the question of whether the victim’s personality or property has been harmed is being actualized. The answer to it determines the nature and content of the rights belonging to the subject, as well as the measures of protection and liability that can be applied in case of violation. Damage to the neuroprosthesis, regardless of the degree of its physical integration with the patient, entails a disorder or loss of body function restored through the prosthetics system, in connection with which its qualification as harm to health is justified. A functional approach to understanding the boundaries of a subject of civil law is argued.
Commodity-Material Values (Goods) in Current Turnover Insurance in the Field of Judicial and Business Practice
Authors: Vasilenko N. V.
Published: February 2025

The demand for this type of insurance, such as commodity-material values (goods) in turnover is increasing. This is caused by an increase in the concentration of material resources in warehouses and distribution centers due to the activation of trade through marketplaces and online stores and large cases of loss of goods. Significant losses that may arise from sellers and intermediaries encourage business practices to enter into insurance agreements with special conditions depending on the purpose of insurance. If the purpose of insurance is to protect the property interest of the creditor then such contracts usually provide for a condition on the non-reduced balance of the pledged goods. In the case of concluding an insurance agreement for the purpose of maximum protection of interests (at the upper or middle limit of the value of goods in turnover) judicial and business practice, given the lack of legal regulation of insurance relations, does not currently have unified positions regarding a number of conditions of such agreements: what features of the insured object are necessary and sufficient for its individualization; how to determine the essential condition of the agreement and the insurance amount if the insured value of goods in turnover is variable; and finally what rules should be applied when calculating the insurance indemnity.