bluuebunny/crossref_metadata_2025_split huggingface dataset:
Inclusão da Modalidade a Distância em Curso de Medicina: Avaliando o Processo através de Pesquisa-Ação
Authors: Wyszomirska Rozangela Maria de Almeida Fernandes , Demerval Matos Diego , Coelho Jorge Artur Peçanha de Miranda , Buarque David Costa , Leite Alessandra Plácido Lima , Fregadolli Andrea Marques Vanderlei 
Published: October 2024

A educação médica vem atravessando um período de mudanças substanciais, principalmente no que se refere ao perfil profissional desejado e ao modelo pedagógico adotado. Estudos têm apontado para a perspectiva de que a Educação a Distância possa contribuir com um desenho curricular integrado. O objetivo do presente estudo foi acompanhar e avaliar a inclusão da modalidade a distância em um curso de medicina de uma universidade pública brasileira. Como metodologia utilizou-se a pesquisa-ação. No 1º Ciclo da pesquisa (Identificação, Reconhecimento e Planejamento), verificou-se que a modalidade de ensino a distância vinha sendo utilizada pontualmente no curso. Levantamento prévio mostrou que 87,9% dos docentes concordavam com estudos para a inclusão da modalidade a distância no curso e 72,5% já haviam realizado capacitações no uso de tecnologias e ambientes virtuais de aprendizagem. A partir desta realidade e de estudos de referencial teórico, foi realizado planejamento de ações. No 2º Ciclo (Ação e Observação) foi criado o Núcleo de Educação a Distância para fomentar estudos e colaborar com os docentes. Também foi definido realizar o mapeamento de objetivos de aprendizagem de disciplinas para serem transpostos para a modalidade a distância, além de discussões sobre o tema em oficinas, reuniões e web conferências. No 3º Ciclo (Avaliação e Reflexão), foi aplicado um questionário, cujos resultados mostraram que 90% dos docentes respondentes concordavam que as atividades disponibilizadas nas plataformas tinham potencial para estimular a aprendizagem dos alunos, se sentiam seguros ao trabalharem com atividades online e com inovação na educação, associando ferramentas de tecnologias e metodologias ativas. A avaliação do estudante on-line, foi considerada um nó crítico por parte dos docentes, bem como foi demonstrado que muitos docentes ainda se sentiam inseguros, para elaborar atividades online. Quanto às aulas remotas, parte dos docentes consideraram que a simples repetição delas poderia entediar os alunos. Como acréscimo, 83% dos docentes concordaram ser possível um ensino híbrido para o curso de medicina, que poderia contribuir para uma aprendizagem significativa. Por fim, as perspectivas para a implementação de modalidade híbrida são bem-vinda à medicina, com um planejamento cuidadoso, permitindo que os envolvidos destaquem os pontos fortes e identifiquem os pontos fracos para estarem melhor preparados para as necessidades futuras.

Palavras-chave: Educação a distância. Educação médica. Satisfação docente. Aprendizagem de alunos.
Educação a Distância no Nied-Unicamp - Realizações e Reflexões
Authors: Valente José Armando , Linhalis Flávia , Prado Maria Elisabette 
Published: October 2024

O NIED, Núcleo de Informática Aplicada à Educação, completou 40 anos em maio de 2023. Ao longo de sua história esse núcleo de pesquisa tem se destacado nacional e internacionalmente pelo trabalho relativo ao uso de tecnologias digitais de comunicação e informação (TDIC) em diferentes níveis de ensino: básico, superior, não formal, educação especial, e formação em empresas. Especificamente com relação à educação a distância (EaD) o NIED desenvolveu o ambiente de educação a distância – TelEduc, o primeiro software livre para Educação a Distância no Brasil, que foi utilizado em diferentes contextos educacionais, especialmente na pesquisa sobre a formação de educadores. Como ações futuras, o trabalho no NIED foca o desenvolvimento de novos ambientes de educação a distância, em consonância com as demandas de mobilidade e ubiquidade.

Palavras-chave: Tecnologias educacionais. Educação online. TelEduc. Mobilidade. Ubiquidade.
Study on Thermal Insulation Measures for Construction of Reinforcement Sleeve Grouting Connection in Winter
Authors: Zhu Fangzhen , Li Wenbo , Xing Benguo , Zhang Lulu 
Published: October 2024

In this paper, the feasibility of winter construction of steel sleeve grouting connection is studied, and two technical schemes of thermal insulation measures for winter construction are provided. This paper mainly introduces the experimental research work of sleeve grouting by simulating winter construction, including test scheme, test operation flow, test equipment and test data collection and analysis. It is concluded that the thermal insulation measures of prefabricated wall panel covering electric heating blanket, XPS insulation board and sleeve outer wall winding electric companion heat preservation are feasible. Finally, according to the actual project case to verify the feasibility of thermal insulation measures, so that the project can progress smoothly, for similar projects in winter construction to provide reference and reference.
Modeled and empirical approaches to evaluate rock petrophysics parameters: a case study of Dhodak Gas Field, Pakistan
Authors:   National Centre of Excellence in Geology, University of Peshawar, Khan Sarfraz , Ullah Shuja ,   National Centre of Excellence in Geology, University of Peshawar, Nisar Umair B. ,   Centre for Climate Research and Development, COMSATS University Islamabad, Ahmed Waqas ,   National Centre of Excellence in Geology, University of Peshawar, Mughal Muhammad R. ,   Department of Meteorology, COMSATS University Islamabad, Nawaz Shahid ,   National Centre of Excellence in Geology, University of Peshawar, Rehman Nazir ur ,   Department of Geology, Khushal Khan Khattak University Karak
Published: October 2024

The main aim of the presented study was to perform an analysis of petrophysical rock parameters for the Pab Formation, which is a potential reservoir, located at four-depth intervals within the Dhodak Gas Field. The Pab Formation in the studied wells is mostly composed of the well-sorted sandstone. The intervals for the study were selected by applying a gamma ray log cut-off of 40%. A Matlab code that is user-friendly and contains empirical and numerical models (Raymor’s, Han's, Castagna’s, Jizba, Blangy, and Gardner's models) was designed with the purpose of providing an interpretation of rock physics parameters in reservoirs. The results indicate that the Pab Formation is mainly saturated with hydrocarbons and possesses sufficient porosity (i.e. between 8 and 38%). According to the cross-plot models, there are a few zones within the Pab Formation that are weakly consolidated. These zones are located at depths of 2377–2404 m and 2418–2430 m. However, the same area is classified as tight gas sandstone and is located between 2330 to 2343 m. The results of the study indicate that the Pab Formation is potentially saturated with hydrocarbons. These findings were based on structural and rock physics assessments of the study area. The approach presented in this work is also helpful for structural trap evaluation. In addition, the petrophysical rock parameter models developed can contribute to reducing the risks associated with hydrocarbon exploration, enabling accurate representation of subsurface conditions and improving reservoir forecasting capabilities in oil producing areas.
Analiza możliwości zwiększenia pojemności czynnej podziemnych magazynów gazu w Polsce
Authors:   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Filar Bogdan , Miziołek Mariusz ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Cicha-Szot Renata ,   Instytut Nafty i Gazu - Państwowy Instytut Badawczy, Moska Agnieszka ,   Instytut Nafty i Gazu - Państwowy Instytut Badawczy, Kwilosz Tadeusz ,   Instytut Nafty i Gazu - Państwowy Instytut Badawczy, Szpunar Tadeusz ,   Instytut Nafty i Gazu - Państwowy Instytut Badawczy
Published: October 2024

Głównym zadaniem PMG jest bilansowanie zmiennego zapotrzebowania na gaz w ciągu całego roku oraz zapewnienie rezerw strategicznych na wypadek przerw w jego dostawach. Jeszcze niedawno w Europie zamykano niektóre podziemne magazyny gazu, gdyż taniej można było kupić gaz dostępny na rynku „spotowym”. Wojna, którą rozpętała Rosja, zmieniła znaczenie podziemnych magazynów gazu. W latach 2015–2021 w Polsce nastąpił wzrost zużycia gazu ziemnego o 5 mld m3 – z 15 do 20 miliardów. Szybki wzrost zużycia gazu wymusza dostosowanie krajowego systemu PMG do nowego zapotrzebowania rynkowego. W związku z tym, że proces inwestycji w nowe pojemności magazynowe trwa od 5 do 8 lat, to inwestycje te mają zaspokajać głównie przyszłe potrzeby. Potrzeby magazynowe bezpośrednio wynikają z rzeczywistego zużycia gazu ziemnego, jednakże proces inwestycyjny wymaga prognozowania długoterminowego zużycia gazu. Firma Gaz-System S.A. w planie rozwoju przedstawiła dwie prognozy zużycia gazu do roku 2040, bazową i dynamiczną. Prognoza bazowa zakłada wzrost zużycia gazu z 20 mld m3 w 2021 roku do 34,7 mld m3. Natomiast prognoza wykonana w wariancie dynamicznym przewiduje wzrost zużycia gazu do 37,3 mld m3. Niestety z powodu obecnych perturbacji na europejskim rynku gazowniczym trudno jest w tej chwili przedstawić wiarygodną długoterminową prognozę zużycia gazu ziemnego w Polsce. Niniejsza analiza ma na celu wykonanie prognozy długoterminowych potrzeb magazynowych. Obecnie sumaryczna pojemność PMG wysokometanowych w Polsce wynosi 3,23 mld m3. W związku z tym, że ryzyko przerw w dostawach gazu związane jest z dostawami gazu z importu, zapotrzebowanie na pojemność czynną PMG określono w zależności od prognozowanej wielkości importu. W roku 2021 pojemność czynna polskich PMG pozwalała na zmagazynowanie 20,81% importowanego gazu. Ewentualna dalsza rozbudowa PMG w Polsce będzie zależeć od rozwoju sytuacji na rynku gazu ziemnego w Polsce oraz w Europie. Przedstawiona analiza zakłada, że minimalna pojemność czynna polskich PMG powinna wynosić 20,81% prognozowanej wielkości importu gazu. Magazyny gazu, oprócz bieżącego bilansowania potrzeb rynku, „przechowują” również, w postaci zapasu obowiązkowego, rezerwy strategiczne. W opracowaniu przedstawiono prognozę zapotrzebowania na pojemności czynne PMG do 2040 roku w rozbiciu na zapas obowiązkowy i pojemność handlową. Wykonana analiza pokazuje również możliwości rozbudowy istniejących magazynów lub budowy nowych PMG.
Assessment of soil pollution with polycyclic aromatic hydrocarbons in Ulan-Ude
Authors: Zhaxylykov N. B. , Kosheleva N. E. , Zavgorodnyaya Yu. A. 
Published: October 2024

: For the first time, polycyclic aromatic hydrocarbons (PAH) contamination of the soil cover of Ulan-Ude, the capital of the Republic of Buryatia, was studied. The content of 16 individual polyarenes was analyzed in the upper horizon of background chestnut and urban soils, sampled during soil and geochemical survey in July–August 2022. The average concentration of total PAHs in the soil cover of Ulan-Ude was 735 ng/g, which was 8 times as much as the concentration in the background soils (87 ng/g). The PAH amount in the soil of various functional zones decrease in the following order: railway transport > motor traffic > industrial > one-story residential > multi-story residential > recreational. At the same time, the amount of PAHs in the railway transport zone was 2.6–5.2 times higher than in other functional zones, which indicates that railway transport is the most powerful source of PAHs in the city. Contamination of soils with polyarenes in all functional zones is determined primarily by medium- (46%) and high-molecular-weight (41%) compounds. Among PAHs with low molecular weight, phenanthrene prevailed (9% of the total PAHs), but medium-molecular-weight fluoranthene (18%) and pyrene (13%) showed higher share; high-molecular-weight compounds dominated by benzo(ghi)perylene (12%), benzo(b)fluoranthene (10%), indeno(1,2,3-cd)pyrene (8%) and benzo(a)pyrene (6%). The total amount of 16 PAHs in the soil cover of the city varied within the range of 17–9 540 ng/g. The highest levels of pollution (3 226–9 540 ng/g) were recorded at 9 sampling points (4% of the city), which form the most contrasting local PAH anomalies. In more than half of the territory of Ulan-Ude, the total amount of PAHs did not exceed 500 ng/g. The indicator ratios of individual PAHs made it possible to determine the dominant types of sources, which include railway transport and coal combustion. The contribution to the environmental hazard of soil contamination with PAHs in Ulan-Ude was mainly made by benzo(a)pyrene (64%) and, to a lesser extent, by benzo(b)fluoranthene (9.6%), indeno(1,2,3-cd)pyrene (7.2%), dibenzo(ah)anthracene (6.5%) and benzo(a)anthracene (6.1%).
Towards a national model of humus (carbon) budget management in soils of agroecosystems in the Russian Federation
Authors: Stolbovoy V. S. , Grebennikov A. M. , Shilov P. M. , Dukhanin Yu. A. 
Published: October 2024

The prospect of adapting two methods for monitoring the fertility of agricultural soils (humus balance, HB) under spring and winter wheat crops (hereinafter referred to as grain crops) developed in the Russian Federation (RF) for the purposes of climate projects has been studied. It was revealed that the RosNIIzemproekt method (1998) underestimates the HB average value to -7.7 c/ha for RF. The RosNIIzemproekt method (1998) has logical errors in the calculation model and is not recommended for use. The TsINAO method (2000) has a more logical calculation model. According to this method, the average value of HB in soils for RF is generally positive and amounts to 3.3 c/ha (0.71 tCO2-eq/ha carbon units). This value constitutes ≈0.3% of average humus reserves in arable soils of the RF (108 tС/ha). The annual value of change in humus content under spring and winter wheat is incommensurably less than the total humus reserves in the soil. Statistically reliable assessment of changes in humus content requires a huge number of soil samples. This makes the verification procedure economically inexpedient. Another option is proposed to increase the time of humus accumulation. It is considered (IPCC, 2003) that a 20-year accumulation period is sufficient, which corresponds to the duration of soil climate projects. A coefficient (0.216) has been proposed for converting humus reserves (c/ha) to the value of a carbon unit (tCO2-eq/ha). The total sequestration of carbon by soils under grain crops in 2022 was about 11 million 914 thousand tCO2-eq. HB accounting significantly compensates for calculated emissions from agricultural production and reduces them by almost 10% (from 116 to 105 million tons CO2-eq in 2022). For both models of fertility monitoring, an assessment was made of the quality of the regression dependence of HB on the total biomass of photosynthesis (TBP) in soils under grain crops. It is shown that according to Fisher's t-test at a 5% significance level, the studied relationship is significant and characterized by the squares of the correlation coefficient (R2) equal to 0.554 and 0.998. In accordance with the Chaddock scale, the closeness of the correlative relationship between HB and TPB for winter wheat is assessed as high, and for spring wheat as very high.
Вплив простору візуалізації на продуктивність методу маршування променів
Authors: Данилюк Ю. , Жураковська О. 
Published: October 2024

У цьому дослідженні вивчається ефективність відтворення неявних поверхонь, використовуючи два різних простори візуалізації: екранний та обмежувальні об'єми. Через всебічний аналіз, висвітлення відмінностей у візуалізації та тестування продуктивності ми оцінили ефективність кожного підходу. Наші результати демонструють значні переваги, які пропонує простір візуалізації обмежувальних об'ємів, включаючи ефективне усунення порожніх областей, зменшення кількості ітерацій при маршуванні променів та покращене використання ресурсів ЦП і ГП. Зокрема, використання простору візуалізації обмежувальних об'ємів надає збільшення частоти кадрів в середньому на 87% порівняно з екранним простором візуалізації, досягаючи 102,71 FPS проти 54,82 FPS відповідно. Наші результати підкреслюють перспективність використання простору візуалізації обмежувальних об'ємів як потужного підходу для покращення ефективності візуалізації неявних поверхонь на основі маршування променів. Ми рекомендуємо його інтеграцію в відповідні системи візуалізації та пропонуємо проводити майбутні дослідження з метою максимізації його переваг та впливу на комп'ютерну графіку та візуалізацію.
Бібл. 9, іл. 6, табл. 1
Агреговані об’ємно-часові моделі планування для одного класу дискретних виробничих систем
Authors: Павлов О. , Кисельов М. , Палеха Б. 
Published: October 2024

Розглянуто проблему складання календарного поопераційного плану для одного класу дискретних виробничих систем, об’ємні характеристики якого повинні бути оптимальними відносно критерія, що включає в себе агреговані часові обмеження. Розв'язок цієї задачі пропонується виконувати в два етапи. Перший – знайти агрегований план, що відповідає одній із запропонованих авторами низки оригінальних агрегованих об’ємно-часових моделей. Другий етап – дезагрегація отриманого оптимального агрегованого плану, що включає в себе агреговані часові обмеження, в поопераційний календарний план. Реалізація другого етапу в даній роботі не розглядається. Запропоновано низку лінійних моделей, що відрізняються між собою як кількістю обмежень і змінних, так і методами їх розв’язання, як задачі лінійного програмування. Запропоновані моделі узагальнені на випадок необхідності знаходження компромісного рішення відносно множини, можливо, антагоністичних лінійних критеріїв в детермінованій постановці та в умовах невизначеності.
Бібл. 17.
Liver damage in patients hospitalized with acute decompensated heart failure, depending on the degree of glucose metabolism disorder
Authors: Tolkacheva V. V. , Diane M. L. , Khutsishvili N. I. , Misan I. A. , Cabello Montoya F. E. , Nazarov I. S. , Smirnov I. P. , Kobalava Zh. D. 
Published: October 2024

Aim. To study the frequency of cardiohepatic syndrome and steatosis by the value of controlled attenuation parameter (CAP), fibrosis, and their combination, depending on the degree of glucose metabolism disorder in patients with acute decompensated heart failure (ADHF).Materials and methods. The study included 280 patients (53% men, average age 70.1 ± 10.8 years) with ADHF: 72.5% of patients had a history of arterial hypertension, 60% of patients had coronary heart disease. The HbA1c test was performed in all patients to assess the status of glucose metabolism. The patients were divided into groups depending on the results obtained: at HbA1c values < 5.7%, patients were included in the group without glucose metabolism disorders, at HbA1c 5.7–6.4% – in the prediabetes group, at HbA1c ≥ 6.5% – in the type 2 diabetes group. All patients underwent a standard physical examination at admission and at discharge. Clinical and comprehensive assessments of congestion were performed – NT-proBNP, lung ultrasound, liver fibroscan with CAP, and bioelectrical impedance analysis of body composition.Results. The frequency of glucose metabolism disorders in patients hospitalized with ADHF was 57.5% (n = 161), while prediabetes was detected in 17.1% (n = 48) and type 2 diabetes – in 40.4% (n = 113) of patients. We revealed significantly higher incidence of steatosis by CAP value (69 vs. 42%, p < 0.001), fibrosis (80 vs. 64%, p < 0.001), and their combination (59 vs. 30%, p < 0.001), as well as cardiohepatic syndrome (87 vs. 61%, p < 0.001) in patients with ADHF and glucose metabolism disorders compared to individuals with ADHF without glucose metabolism disorders, respectively. The group of ADHF patients with glucose metabolism disorders and a combination of steatosis / fibrosis was characterized by more pronounced manifestations of metabolic syndrome, impaired kidney and liver function, and more pronounced manifestations (both clinical and laboratory) of congestion.Conclusion. In patients with ADHF with glucose metabolism disorders, liver function test and liver fibroscan with CAP allow for identifying the most severe group of patients with a combination of steatosis/fibrosis and pronounced congestion.
Effect of dalargin on the content of goblet cells and mucins in the colonic mucosa in experimental ulcerative colitis
Authors: Liashev A. Yu. , Mal G. S. , Solin A. V. 
Published: October 2024

Aim. To investigate the protective effect of dalargin on the content of goblet cells and mucins in the colonic mucosa in a mouse model of ulcerative colitis.Materials and methods. Ulcerative colitis was simulated in Balb/C mice by replacing drinking water with 5% sodium dextran sulfate in boiled water for 5 days. Dalargin was administered subcutaneously in a volume of 0.1 ml at a dose of 100 μg / kg of body weight once a day for 7 days from the beginning of ulcerative colitis simulation. Sulfasalazine as a reference-listed drug was administered intragastrically at a dose of 200 mg / kg once a day for 7 days. The mice were sacrificed on day 5, 7, and 28. The sections of the distal colon were prepared and stained with hematoxylin and eosin, alcian blue (pH = 1.0) according to Mowry or by PAS reaction. In the sections, the number of goblet cells and acid and neutral mucins was determined.Results. In the mouse model of ulcerative colitis, the number of goblet cells (mainly at the bottom of the crypts), acid and neutral mucins decreased. Dalargin administration increased the number of goblet cells and the content of acid and neutral mucins in the colonic mucosa more effectively than sulfasalazine.Conclusion. Dalargin has a protective effect in ulcerative colitis.
3D-Printed Prosthesis with an Articular Interface for Anatomical Acetabular Reconstruction After Type I + II (+ III) Internal Hemipelvectomy
Authors: Huang Xin , Huang Donghua , Lin Nong , Yan Xiaobo , Qu Hao , Ye Zhaoming 
Published: October 2024

Background:
Pelvic reconstruction after type I + II (or type I + II + III) internal hemipelvectomy with extensive ilium removal is a great challenge. In an attempt to anatomically reconstruct the hip rotation center (HRC) and achieve a low mechanical failure rate, a custom-made, 3D-printed prosthesis with a porous articular interface was developed. The aim of this study was to investigate the clinical outcomes of patients treated with this prosthesis.

Methods:
This retrospective cohort study included 28 patients with type I + II (+ III) internal hemipelvectomy through the articular interface of the sacroiliac joint and managed with a prosthesis at a single center between August 2016 and August 2021. Complications and oncological outcomes were analyzed. The position of the reconstructed HRC was assessed and lower-limb function was evaluated. Biomechanical analyses of different fixation modes of the prosthesis were conducted using finite element analysis.

Results:
The displacement distance of the HRC from preoperatively to postoperatively was a mean (and standard deviation) of 14.12 ± 8.75 mm. The rate of implant-related complications was 14.3% (4 of 28) for prosthetic breakage, 14.3% (4 of 28) for aseptic loosening, 7.1% (2 of 28) for dislocation, and 7.1% (2 of 28) for deep infection. The mean Musculoskeletal Tumor Society (MSTS)-93 score was 18.2. The aseptic loosening rate was significantly greater for prostheses fixed with 3 sacral screws (4 of 10, 40.0%) than for those fixed with 4 (0 of 10, 0%) or 5 screws (0 of 8, 0%) (p = 0.024). The prosthetic breakage rate was lower in patients who underwent lumbosacral fixation (0 of 13, 0%) than in those who did not (4 of 15, 26.7%), although the difference did not reach significance (p = 0.102). Biomechanical analyses suggested that the addition of lumbosacral fixation or increasing the number of sacral screws from 3 to 4 or 5 visibly reduced the peak stress of the sacral screws.

Conclusions:
The use of a 3D-printed prosthesis with an articular interface for pelvic reconstruction demonstrated stable prosthetic fixation, anatomical acetabular reconstruction, and acceptable early functional outcomes.

Level of Evidence:
Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.