bluuebunny/crossref_metadata_2025 huggingface dataset:
Caracterización del biodiesel producido a partir del aceite de higuerilla (Ricinus communis), y determinación de los factores primarios que intervienen en su calidad
Authors: Gáfaro-Álvarez Dally Esperanza , Rueda-Jaimes Andres Gilberto , Medina-Caballero Luisa Fernanda , Salazar-Beleño Ana Milena , Montesino-Rincon Sandra Milena , Carreño-Castaño Leidy Andrea
Published: June 2024

El biodiesel se ha convertido en una las principales opciones a la hora de satisfacer la demanda de recursos energéticos y reemplazar o complementar la utilización de combustibles fósiles, gracias a su compatibilidad con los mismos, su carácter renovable y su impacto ambiental reducido. En la actualidad, y en gran medida, el biodiesel es producido a partir de aceites de origen vegetal, entre los que se encuentra el aceite de semilla de higuerilla. En la presente investigación se hizo uso de semilla cultivada de forma regional, en el municipio de Girón (Santander), para luego realizar el proceso completo de extracción del aceite y transformación del mismo en combustible, buscando determinar la viabilidad de los mismos a gran escala mediante la caracterización del producto obtenido.
Performance evaluation of polygonal and cylindrical ball mills using discrete element method
Authors: Kyalo M. N. , Kimotho James , Ndiritu H. N.
Published: June 2024

Ball mills are commonly used in chemical and mineral processing
industries for particle size reduction. In mineral processing,
cylindrical drums with wear resistant materials are used various
operation scales. Polygon shaped mills have found application by
artisanal and small-scale miners (ASM) due technological and economic
reasons. Evaluating this kind of mills is key in improving or replacing
them based on technological data. A modest improvement in grinding
efficiency and mill durability can lead to significant economic and
environmental benefits. In this study, the performance of polygonal
shaped mills was evaluated and compared with cylindrical profiles
considering power draw, collision energy dissipation, relative wear and
operational stability. Discrete element method (DEM) was used to carry
out simulations to describe mechanical behavior of grinding media and
the interaction with the mill walls. Polygonal shaped mills without
lifters promoted more interparticle interaction with limited
centrifuging of particle even at higher speeds compared to cylindrical
mills without lifters. Installation of lifters in polygon increased
inter-particle collisions and reduce power draw and relative wear.
Cylindrical mill with lifters had high interparticle collisions similar
to polygonal profile with much lower cumulative relative wear and high
operational stability.
Evaluation of the Lateral Connectivity of the Suncheon’s Dong Stream Based on Riverside Data
Authors: Hwang Jeong Ho , Jang Yeonhui , Yun Jong-Hak
Published: June 2024

The lateral connectivity of Suncheon’s Dong stream was evaluated based on landside, waterside, and levee data of the river. A total of six items was evaluated, crosssectional structure, vegetation cover ratio, connecting waterway gate, levee slopes, urbanized area ratio and wetland area ratio. Among the items, the connectivity was high in the following order: cross-sectional structure, urbanization area ratio, and levee slope. In a total of 16 survey areas of Suncheon’s Dong stream, one, 12, and three areas were evaluated as continuity, damaged, and discontinuity respectively. The downstream section was evaluated as one continuity and three damaged, the lower-middle stream section was evaluated as one damaged and three discontinuity, and the upper-middle stream and upstream sections were evaluated as eight damaged. The cross-sectional structure, vegetation cover ratio, levee slope, and urbanized area ratio had low lateral connectivity in the lower-middle stream survey section, while the wetland area ratio had high lateral connectivity in the downstream survey section. The lateral connectivity evaluation results of the river aquatic ecosystem in Suncheon’s Dong stream can be used as basic data that is helpful in future ecological river management policies.
Efficacy and Safety of LX9211 for Relief of Diabetic Peripheral Neuropathic Pain (RELIEF-DPN 1): Results of a Double-Blind, Randomized, Placebo-Controlled, Proof-of-Concept Study
Authors: Pop-Busui Rodica , Patel Anand , Nai-Mei Sang Christine , L. Banks Phillip , F. Pierce Phillip , Sun Franklin , Granowitz Craig , Gopinathan Suma
Published: June 2024

Objective: To evaluate the efficacy of LX9211 in reducing pain related to diabetic peripheral neuropathy (DPN).

Research Design and Methods: This double-blind, multicenter, proof-of-concept trial randomized (1:1:1) 319 individuals with diabetic peripheral neuropathic pain (DPNP) to LX9211 10 mg (n=106), LX9211 20 mg (n=106), or matching placebo (n=107), administered once daily for 6 weeks. DPNP was rated daily using an 11-point numerical rating scale. The primary endpoint was change from baseline to week 6 in the average daily pain score. The difference between each LX9211 dose group and placebo was evaluated by mixed model repeated measures analysis.

Results: Low-dose LX9211 achieved the primary efficacy endpoint: -1.39 versus -0.72 points for placebo; LS mean (SE) difference: -0.67 (0.249), 95% CI: -1.16, -0.18, p=0.007; the high-dose LX9211 demonstrated improvement in pain severity versus placebo (-1.27 vs. -0.72 points, respectively), but the between-group difference did not reach the prespecified statistical significance (-0.55 (0.254), 95% CI: -1.06, -0.05, p=0.030). Treatment benefit was observed beginning at week 1 and maintained thereafter. LX9211 also demonstrated improvement in several patient-reported secondary outcomes. Most common adverse events were dizziness, nausea, and headache. More participants treated with LX9211 (20 mg: 28 [26.4%], 10 mg: 17 [16.0%]) than placebo (3 [2.8%]) discontinued study drug prematurely due to adverse events; serious adverse events were uncommon (2 [1.9%], 0, and 1 [0.9%], respectively).

Conclusions: These preliminary findings of improvement in DPNP with LX9211 support further investigation in larger trials.
Violation of onco-surgical principles is associated with survival outcomes in upper tract urothelial carcinomas after radical nephroureterectomy
Authors: Patras Ioannis , Abrahamsson Johan , Gerdtsson Axel , Nyberg Martin , Saemundsson Ymir , Ståhl Elin , Sörenby Anne , Warnolf Åsa , Bobjer Johannes , Liedberg Fredrik
Published: June 2024

Objective: Disease recurrence, particularly intravesical recurrence (IVR) after radical nephroureterectomy (RNU) for upper tract urothelial carcinoma (UTUC), is common. We investigated whether violations of onco-surgical principles before or during RNU, collectively referred to as surgical violation (SV), were associated with survival outcomes. 
Material and methods: Data from a consecutive series of patients who underwent RNU for UTUC 2001–2012 at Skåne University Hospital Lund/Malmö were collected. Preoperative insertion of a nephrostomy tube, opening the urinary tract during surgery or refraining from excising the distal ureter were considered as SVs. Survival outcomes in patients with and without SV (IVR-free [IVRFS], disease-specific [DSS] and overall survival [OS]) were assessed using multivariate Cox regression analyses (adjusted for tumour stage group, prior or concomitant bladder cancer, comorbidity and preoperative urinary cytology).
Results: Of 150 patients, 47 (31%) were subjected to at least one SV. Overall, SV was not associated with IVRFS (HR 0.81, 95% CI 0.4–1.6) but with worse DSS (HR 1.9, 95% CI 1.03–3.7) and OS (HR 1.9, 95% CI 1.2–3) in multivariable analysis. Additional analyses with a broader definition of SV including also preoperative instrumentation of the upper urinary tract (ureteroscopy and/or double J stenting) showed similar outcomes for DSS (HR 2.1, 95% CI 1.1–4.3).
Conclusion: Worse survival outcomes, despite no difference in IVR, for patients that were subjected to the violation of sound onco-surgical principles before or during RNU for UTUC strengthen the notion that adhering to such principles is a cornerstone in upper tract urothelial cancer surgery.
Minimising warm ischaemia time during robot-assisted partial nephrectomy. A video-based assessment of tumour excision, kidney reconstruction and intermediate time
Authors: Barnoiu Ovidiu S. , Yazdani Arazi Hamid R. , Andersen Aage V.
Published: June 2024

Introduction: Surgical video review is an emerging tool for assessing patient outcomes, especially in complex surgeries such as robot-assisted partial nephrectomy (RAPN). Assessing and measuring warm ischaemia time (WIT) during RAPN by dividing it into the time used for tumour excision time (ExcT), time used for kidney reconstruction time (RecT) and intermediate time (IntT) has not been performed before. This study aimed to analyse the factors that can influence all surgical times and assess their impact on positive surgical margins (PSMs) and complication rates.
Methods: We evaluated 32 surgical video recordings from patients undergoing RAPN and measured WIT, ExcT, RecT and IntT with a stopwatch. Factors such as tumour characteristics and surgeon experience were also recorded. SPSS software was used to identify the predictors for all surgical times and to correlate ExcT with PSM and RecT with complication rate.
Results: We recorded a median WIT of 1,048 s (17 min and 28 s). The median of ExcT, RecT and IntT was 398 s (37.1% of WIT), 518 s (46.7% of WIT) and 180 s (16.2% of WIT), respectively. We found a significant correlation (P < 0.001) between R.E.N.A.L. score and all surgical times. No correlation was found between ExcT and PSM (P = 0.488) and between RecT and the probability of developing complications (P = 0.544).
Conclusion: Tumour morphology influences all surgical times, and surgeon experience influences only ExcT. We observed a short RecT during RAPN though at the cost of increased ExcT, and we believe that improving surgical experience, especially for the excision of more complex tumours, can reduce WIT during RAPN.
Jerzy Motylewicz, Społeczeństwo Przemyśla w XIV–XVIII wieku, t. 2
Authors: Miodunka Piotr
Published: June 2024

Recenzja
The Talking Stick Model Improves Mathematics Learning Outcomes for Fourth Grade Elementary School Students
Authors: Shegefandini Mutiara , Sari Elok Fariha
Published: June 2024

The problem that often occurs is that studying mathematics in elementary school seems boring, resulting in low learning outcomes. This research aims to analyze the application of the Talking Stick learning model to improve mathematics learning outcomes in fourth-grade elementary school students. This type of research is quantitative research. This research uses a non-equivalent control group essay method with a quasy-experimental type. The subjects of this research were 27 grade IV elementary school students, consisting of 13 male students and 14 female students. The data collection methods used in this research are observation, interviews, tests and observation sheets. The instruments used to collect data were observation sheets and test questions. The techniques used to analyze the data are qualitative descriptive analysis techniques and quantitative and inferential statistics. The research results show that applying the Talking Stick learning model, which pays attention to the number of members in each group, can improve the mathematics learning outcomes of fourth-grade elementary school students. In the initial test, six students (22%) got a score of 76; in the previous pretest results of the application of Talking Stick learning, there were nine students (33%). After the implementation of Talking Stick learning, 26 students out of the total got scores above the KKM. The t-test results also show differences in mathematics learning outcomes after implementing the Talking Stick learning model. It was concluded that the Talking Stick learning model can be used in mathematics learning.
Implementation of Brain-Based Learning Approach to Increase Mathematics Learning Interest and Outcomes of Third-Grade Students
Authors: Pratama Annisa Febriana Maulida , Ratnaningrum Ika
Published: June 2024

The low interest of students is caused by a less innovative approach, which makes students feel bored with learning mathematics. Low student interest in learning also has an impact on students' low mathematics learning outcomes. Based on this, this research aims to analyze the application of the brain-based learning approach to increase interest and learning outcomes in mathematics for grade III elementary school students. This type of research is qualitative research. The research method used in the quantitative research design is the ex post facto method. The population in this study was all 26 class III students. The sample for this research was all class III elementary school students, totaling 26 students. The methods used to collect data are interviews, questionnaires, documentation, and tests. The instrument used in this research was a questionnaire sheet. The data analysis technique in this research is a statistical analysis using the SPSS computer application. The results of this research show an increase in interest and learning outcomes after implementing the Brain-Based Learning (BBL) approach in mathematics learning. It was concluded that the Brain-Based Learning (BBL) approach can significantly increase interest and learning outcomes in elementary school students.
Access to health service and hearing rehabilitation for adult and older adults during the initial period of the COVID-19 pandemic in Brazil
Authors: Guesser Vitor Martins , Haas Patricia , Quialheiro Anna , Samelli Alessandra Giannella , Cigana Luciana Berwanger , Machado Marcos José , Paiva Karina Mary de
Published: June 2024

Introduction: Hearing loss is a common disability in the world population and contributes to difficulty in verbal communication and reduced quality of life, highlighting the importance of early identification, rehabilitation and audiological monitoring of this disability to mitigate its consequences. During the COVID-19 pandemic, restrictive measures reduced the service capacity of hearing health services and made it difficult to seek help to solve problems related to adaptation to personal sound amplification products (PSAPs), being a barrier in the rehabilitation process of hearing loss. Aim: To characterize PSAPs users and the initial hearing rehabilitation process for adults and elderly people and verify the factors associated with the return to hearing monitoring consultations in the initial period of the COVID-19 pandemic. Methods: Cross-sectional observational study with adults and elderly people: elderly users of an outpatient hearing health service who return for a scheduled hearing monitoring consultation in the initial period of the implementation of restrictive measures of the COVID-19 pandemic in Brazil. Results: Most participants were able to return to the hearing monitoring clinic, the majority of whom were elderly, female and vaccinated against COVID-19. There was a higher prevalence of adequate adaptation to the PSAPs. There was no statistical association between variables related to adaptation to PSAPs, COVID-19 and mental health and return to hearing monitoring consultation. Conclusion: Factors related to adaptation to PSAPs, COVID-19 or mental health did not influence the return to hearing monitoring consultation in the present investigation.
Research kinetics of complexation of 2-methoxyphenol with ferrum(ІІІ) ion and ferrum(ІІІ) hexacyanoion
Authors:   Lviv Polytechnic National University, Oliynyk L. P.
Published: June 2024

Study of the formation of complexes of 2-methoxyphenol with ferrum (III) ion or hexacyanoferrum (III) ion. Kinetic studies have shown that the order of reaction for ferrum ion or ferrum hexacyanoion is close to one. The order of reaction for 2-methoxyphenol is 0.8 in the reaction with ferrum (III) ion and close to zero in the reaction with ferrum (III) hexacyanoion. It has been shown that the formed complexes are stable in acidic solution at pH less than 7 and rapidly decompose in alkaline solution. The complex of iron ion with 2-methoxyphenol decomposes into 2-methoxyphenol and ferrum hydroxide at pH above 8. At the same time, the rapid oxidation of 2-methoxyphenol is observed with increasing pH of the solution of the hexacyanoiron ion complex with 2-methoxyphenol. The found Kp values for the interaction of ferrum ion with 2-methoxyphenol are much higher than for the reaction with hexacyanoferrum ion.
Сhemical synthesis of solid solutions of mercury sulfide-selenide films in the presence of sodium tartrate
Authors:   Lviv Polytechnic National University, Sozanskyi M. A. , Stadnik V. Ye. ,   Lviv Polytechnic National University, Guminilovych R. R. ,   Lviv Polytechnic National University, Siryk K. M. ,   Lviv Polytechnic National University, Shapoval P. Yo. ,   Lviv Polytechnic National University
Published: June 2024

Solid solutions films of mercury sulfide-selenide (HgS1–xSex) were synthesized on glass substrates by the chemical bath deposition method. Theoretical calculations of the boundary conditions for the HgS and HgSe formation in the mercury-tartrate-thiourea-selenosulfate system were made. The boundary conditions of HgS1–xSex were defined by the overlap area between the constructed HgS and HgSe formation zones. The X-ray diffraction and elemental analysis showed that the obtained films are single-phase and consist of HgS1–xSex substitutional solid solutions in zincblende modification. The effect of Na2SeSO3 concentration on the degree of S-Se substitution, as well as on the optical and morphological properties of HgS1–xSex films, was investigated.
Сorrosion protection with the help of inhibitors from renewable raw materials. Review
Authors:   Lviv Polytechnic National University, Romanchuk N.O. , Topilnytskyi P. I. ,   Lviv Polytechnic National University, Romanchuk V. V. ,   Lviv Polytechnic National University, Zarichanska M. I. ,   Lviv Polytechnic National University
Published: June 2024

The article provides information about corrosion problems in the oil refining industry and the scale of losses associated with it. The causes of corrosion associated with the presence of sulfur compounds, hydrochloric acid and chlorides, naphthenic acids, etc. in oil are described. A set of methods aimed at reducing the corrosion effect of these components is given. The use of inhibitors is one of the most effective and widespread such methods. The use of corrosion inhibitors from renewable raw materials is becoming more and more popular. The article provides an overview of literary sources related to the study of “green” corrosion inhibitors.
PRODUCTION OF BIOELECTRICITY FOR THE AQUEOUS EXTRACTS OF SOME PLANTS
Authors:   Lviv Polytechnic National University, Dyachok Vasyl , Ivankiv Oksana ,   Danylo Halytsky Lviv National Medical University, Diachok Iryna ,   Danylo Halytsky Lviv National Medical University
Published: June 2024

Annual climate conferences draw public attention to the urgent need to ecologize CO2-neutral fuel systems and recognize that global temperature increases must be limited to less than 2 °C to avoid dangerous climate change. Based on the projections of the International Panel on Climate Change, it is now widely accepted that in order to stay within this temperature range, CO2 emissions need to be reduced by 80% by 2050. Furthermore, developing countries most affected by climate change are pushing for a reduction (as opposed to stabilization) of atmospheric CO2 equivalent levels from ~450 ppm to 350 ppm in order to stabilize at a 1.5 °C temperature rise. Electricity plays an important role in our everyday life, and its consumption is constantly increasing. Its traditional production based on fossil fuels has huge environmental problems, such as pollution of the atmosphere with greenhouse gases with further global consequences - the greenhouse effect. To overcome these effects, technologies based on non-conventional energy sources such as solar energy, wind energy, biofuels, etc. are being implemented. While solar photovoltaic and thermal energy are attractive, the need for bioenergy is becoming inevitable to replace fossil fuels. Natural photosynthesis offers the means for this, primarily through the use of plants. Land plants have already been used as a source of bioenergy, and this use will increase in the future, despite a number of associated problems. This study concerns a new technology of electricity production, namely, biotechnology, that is, the use of aqueous extracts of various plant resources. Some plants in nature have the ability to accumulate in their cells biologically active compounds capable of creating an electrolytic environment, in fact they are suitable for the production of electricity, which can be amplified.
DETERMINANTS OF FOREIGN DIRECT INVESTMENT IN ORGANIZATION OF THE ISLAMIC COOPERATION COUNTRIES: DOES FINANCIAL DEVELOPMENT MATTER?
Authors: Zulkifli Zulkifli , Kusuma Alan Budi , Fahrika Andi Ika , Azzaki Muhammad Adnan
Published: June 2024

A study on the factors influencing foreign direct investment (FDI) was started by the Islamic Cooperation countries, the majority of which are developing nations, due to the significance of capital flows for these nations. The present study employs an institutional quality framework, green economic policies, and the function of financial development to evaluate the components that effect foreign direct investment (FDI). The results of this research demonstrate that institutional changes and green economic policies stimulate foreign investment. Several institutional metrics, including government performance, the rule of law, political stability, and regulatory quality, have highly positive outcomes, while electoral accountability and preventing corruption have negative and minor consequences. Furthermore, elements of the green economy including human capital, natural resources, and environmental laws have a big impact on foreign investment. These results also suggest that the growth of the financial sector can boost the impact of institutional quality and the green economy on the attraction of foreign investment. The conclusions of this study demonstrate that investors examine institutional integrity, the green economy, and financial development when making investment decisions.
ХАРАКТЕРИСТИКА ОСІБ ІЗ ХРОНІЧНИМ КАЛЬКУЛЬОЗНИМ ХОЛЕЦИСТИТОМ НА ГОСТРОМУ ЕТАПІ РЕАБІЛІТАЦІЇ ЯК ПЕРЕДУМОВА СТВОРЕННЯ ІНДИВІДУАЛЬНИХ РЕАБІЛІТАЦІЙНИХ ПРОГРАМ ПІСЛЯ ХОЛЕЦИСТЕКТОМІЇ
Authors: Голод Наталія Романівна
Published: June 2024

Актуальність проблеми. Жовчнокам’яна хвороба дуже поширена. Приблизно у 10-20% населення світу в якийсь момент життя з’являються камені в жовчному міхурі, і близько 80% з них протікають безсимптомно. У осіб із хронічним калькульозним холециститом ця патологія поєднується із іншими хронічними неінфекційними захворюваннями: ішемічною хворобою серця, ожирінням, гіпертонічною хворобою та цукровим діабетом, які впливають на перебіг та розвиток ускладнень окремих патологій, формуючи коморбідний комплекс метаболічного синдрому. Метою є характеристика осіб із хронічним калькульозним холециститом на гострому етапі реабілітації. Аналізували наявність супутніх хронічних захворювань та ускладнень лапароскопічної холецистектомії. Методи дослідження: проведено ретроспективний аналіз 50 медичних карт осіб із хронічним калькульозним холециститом, які знаходилися на стаціонарному лікуванні у хірургічному відділенні Івано-Франківської центральної міської клінічної лікарні. Результати дослідження. Питома вага осіб працездатного віку (до 60 років) становила 66%. Осіб середнього віку (45-60 років) – 38%; похилого віку (61-75 років) – 34%; молодого віку (25-44 років) – 28%. Із 50 осіб тільки – в 45 (90 %) діагностовано супутню соматичну патологію, по одному супутньому захворюванню виявлено в 16 осіб (32 %), по два – у 13 осіб (26 %), по три – у 9 (18 %), чотири – у 3 осіб (6 %), п’ять у 2 осіб (4 %), шість – у 2 осіб (4 %). Наявна супутня соматична патологія підвищує ризики при створенні пневмоперитонеуму, підвищує операційно-анестезіологічний ризик, формує передумови для післяопераційних ускладнень та подовжує термін перебування осіб в стаціонарі, період відновлення. У 34% осіб були післяопераційні ускладнення: неконтрольовані підйоми артеріального тиску – 20%, гострий панкреатит – 10%, жовчетеча – 4%, тромбофлебіт н/к – 4%, тромбоз – 4%, загострення виразкової хвороби – 2%. Висновки. Наявність супутньої патології негативно впливає на реабілітаційний прогноз таких осіб. Замість покращення якості життя після холецистектомії осіб одразу після оперативного втручання стикаються із наслідками загострення хронічних захворювань.
Informe sobre Timor-Leste 2022-2023
Authors: Fidalgo-Castro Alberto , Silva Renata Nogueira da , Filho Miguel Antonio dos Santos
Published: June 2024

Este artículo proporciona un resumen conciso de los acontecimientos clave que tuvieron lugar en Timor-Leste desde 2022 hasta septiembre de 2023, divididos en tres categorías principales: política nacional, economía y política internacional. En el ámbito nacional se destacan las elecciones presidenciales y legislativas de 2022 y 2023, junto con debates y sucesos relevantes en los campos social, cultural, judicial y económico. Sobre economía, este artículo se centra en la dificultad de aprobar presupuestos por parte del gobierno y los problemas inflacionarios de la economía en un contexto de falta de ingresos de petróleo, así como la creciente importancia de la migración interna (rural-urbana) y hacia el exterior. En cuanto a política internacional, se enfoca en la admisión de Timor-Leste como miembro observador de la ASEAN, así como en las relaciones diplomáticas con naciones asiáticas, países de la Comunidad de los Países de Lengua Portuguesa (CPLP) y el Vaticano. Además se menciona la conclusión del juicio de Australia contra Bernard Collaery como un punto de interés en la esfera legal internacional.
Without a male breadwinner: “deserted wives” seeking poor relief from the Destitute Board, Adelaide, South Australia, 1855-1856
Authors: Jennifer Dawn
Published: June 2024

When destitution reached its peak in South Australia in 1855-1856, “deserted wives” became the focus of the Destitute Board, Adelaide’s attention. Left behind by their husbands in favour of the Victorian gold diggings, these women were subsequently publicly censured in the government and national press. The present study sought to establish a demographic and destitution sketch of these destitute women and their families; to explore the factors that influenced their destitution; and, to discover what happened to them after the mid-1850s. The usefulness of the Destitute Board’s admissions register for genealogists was also evaluated. Using matched record linkage and family reconstitution methods, evidence was found that challenges the Destitute Board’s discourse. Only about one-half of absent fathers were recorded at the gold diggings, while about one-third of families experienced temporary desertion. Examination of these findings within the social and economic contexts of the period offers a unique view of the deserted families and provides a useful foundation for further research. Evaluation of the Destitute Board’s admissions register demonstrates its value to the genealogical community, despite a few limitations.
Electrocardiographic changes in lung cancer. Be careful not to misdiagnose: acute coronary event? meta? inflammation?
Authors: Styczkiewicz Katarzyna , Kostkiewicz Agnieszka , Górecki Michał , Iwański Mateusz A.
Published: June 2024

In cancer patients changes in the electrocardiogram (ECG) may indicate various causes. The presented case concerns a patient with advanced left lung cancer who presented deep inversion of T waves during ongoing chemotherapy. We excluded acute coronary syndrome, acute pulmonary embolism, and myocarditis. Subsequently, we suspected metastases to the myocardium; therefore, we performed cardiac magnetic resonance imaging, which however did not confirm that. The cardiac magnetic resonance imaging showed residual post-inflammatory changes in the left lung. We publish this case to show that the inflammatory process of lung segments adjacent to the heart may cause temporal myocardial oedema, resulting in ECG changes that may mimic acute coronary events.
LEARNING ANALYTICS APLICADA ÀS ÁREAS PEDAGÓGICA E EDUCACIONAL: VERIFICAÇÃO DO AUMENTO DA MOTIVAÇÃO E DO DESEMPENHO ACADÊMICO EM ALUNOS DO NÍVEL SUPERIOR
Authors: Martins Amanda Sampaio , Calvosa Marcello Vinicius Doria
Published: June 2024

A obra original foi escrita por três autores. O primeiro, Damien S. Fleur, é doutorando em Psicologia Cognitiva e Aprendizagem Aprimorada por Tecnologia, professor da Faculty of Science, Informatics Institute (Amsterdã, Holanda). O segundo autor, Wouter van den Bos, fez doutorado na área de Psicologia do Desenvolvimento. É professor associado a Faculty of Social and Behavioural Sciences (Amsterdã, Holanda) e pesquisador do Center for Adaptive Rationality, Max Planck Institute for Human Development (Berlim, Alemanha). O último autor, Bert Bredeweg, fez doutorado na área de inteligência artificial. É professor associado da Amsterdam University of Applied Sciences (Amsterdã, Holanda) e da University of Amsterdam Psychology (Amsterdã, Holanda), na qual atua por mais de 37 anos.
Wpływ węgla brunatnego na wielkość i jakość plonu maliny odmiany Polana
Authors: Buczyński Kamil , Kapłan Magdalena , Borkowska Anna , Kilmek Kamila
Published: June 2024

Malina zwyczajna (Rubus idaeus L.) jest bardzo cenionym i często uprawianym gatunkiem sadowniczym w Polsce. Wymaga żyznej gleby, o bardzo dobrych właściwościach fizykochemicznych. Z powodu zagrożenia pustynnieniem ponad 80% użytków rolnych niezbędne jest dostarczanie do gleby materii organicznej w celu zatrzymania tego procesu i osiągnięcia wysokich plonów w uprawie maliny, a także innych gatunków sadowniczych. Celem pracy była ocena przydatności podłoża CarboMat z węgla brunatnego jako dodatku do gleby macierzystej w uprawie gruntowej maliny odmiany Polana. Badaniami objęto poletko doświadczalne z 82 krzewami, posadzonymi na glebie bez dodatku węgla brunatnego oraz z dodatkiem węgla brunatnego – 30% w stosunku do masy gleby macierzystej. Nie stwierdzono istotnego wpływu wzbogacenia gleby węglem brunatnym na istotną poprawę parametrów plonowania i wzrostu maliny odmiany Polana w pierwszym sezonie owocowania po posadzeniu. Istotny wpływ na masę zebranego plonu, ilość owoców i masę pojedynczego owocu niezależnie od kombinacji stwierdzono w przypadku terminu zbioru. Potwierdzono również wpływ węgla brunatnego na właściwości fizykochemiczne gleby.
Problematyka rewaloryzacji i adaptacji ginących zabytków na Lubelszczyźnie na przykładzie młyna w Turce gm. Wólka. Cz. II
Authors: Dudkiewicz-Pietrzyk Margot , Miłkowska Ewa , Jakubas Szymon
Published: June 2024

Niemniejszy manuskrypt przestawia projekt adaptacji młyna wodnego w Turce gm. Wólka i nawiązuje do badań o sąsiednim zabytku – zespole dworsko-parkowym w Sobianowicach. W tym przypadku również zaproponowano konkretne działania rewaloryzacyjne mające na celu połączenie funkcjonalne tych dwóch obiektów. W tym celu opracowano następujące analizy: stanu istniejącego, historyczną, komunikacyjną, formalno-prawną, a także wykonano ogólną ewidencję aktualnej roślinności wokół młyna. Na podstawie przeprowadzonych badań powstaływytyczne do dalszego postępowania. Oprócz braku  środków finansowych i inwestora główną przeszkodą w uratowaniu zabytku jest sytuacja własnościowa. Działka, na której znajduje się młyn, należy do kilku właścicieli. Pomimo tych przeszkód dzięki niedalekiej lokalizacji względemsiebie dworu i młyna nad rzeką Bystrzycą oraz idei powiązania ich wspólnymi cechami użytkowymi, funkcjonalnymi i adaptacjom na cele hotelowe i gastronomiczne – mogłyby one stać się atrakcją turystyczną regionu.
Zmiany zawartości wybranych składników mineralnych w liściach borówki wysokiej (Vaccinium corymbosum L.) w okresie wegetacji
Authors: Wach Dariusz , Błażewicz-Woźniak Marzena , Kamiński Szymon
Published: June 2024

Badania zmian zawartości wybranych składników mineralnych w liściach borówki wysokiej zachodzących podczas wegetacji oraz ocenę odżywienia przeprowadzono w latach 2012–2014 na bardzo kwaśnej glebie mineralnej wytworzonej z piasku słabogliniastego z niewielkim dodatkiem próchnicy (1,25%). Analiza statystyczna uzyskanych wyników wykazała istotne zmiany zawartości wszystkich badanych składników w okresie wegetacji. Zawartość azotu (N), fosforu (P) i potasu (K) w liściach borówki wysokiej zmniejszała się, natomiast magnezu (Mg) i wapnia (Ca) zwiększała. Odmiany borówki wysokiej różniły się istotnie zawartością badanych składników w każdym terminie oznaczeń. W I terminie oceny (metoda holenderska – połowa VI), odpowiadającym II terminowi w doświadczeniu, stwierdzono niskie wartości N, P, Mg i Ca w liściach wszystkich ocenianych odmian. Zanotowano jedynie optymalną zawartość K, ale tylko dla odmian ‘Ivanhoe’, ‘Northland’ i ‘Spartan’. Ocenie stanu odżywienia poddano także liście w trzecim terminie doświadczalnym, który porównano z liczbami granicznymi dla powszechnie stosowanej metody tzw. amerykańskiej (przełom VII/VIII – po I zbiorze jagód odmiany ‘Bluecrop’). Ocena stanu odżywienia wykazała niską zawartość P, optymalną K, zaś w przypadku pozostałych składników dała niejednoznaczne wyniki. Niezależnie od odmiany zawartość N była na poziomie optymalnym, ale tylko dla odmian ‘Bluecrop’, ‘Bluejay’ oraz ‘Spartan’. Koncentracja Mg w liściach była niska, zaś optymalna tylko dla odmian ‘Bluecrop’, ‘Bluejay’, ‘Northland’ i ‘Spartan’. Generalnie ocena zawartości Ca wykonana w tym terminie wykazała niski jego poziom w liściach, jedynie odmiany ‘Darrow’ i ‘Northland’ miały optymalną zawartość tego składnika.
Modelowanie zagospodarowania wsi w kierunku rozwoju usług turystyczno-rekreacyjnych i pożytków ekologicznych
Authors: Bieske-Matejak Alicja , Lipińska Halina , Wilk Jordan , Żerebecka Pailina
Published: June 2024

Tematem badań było opracowanie koncepcji modelowania wsi w celu zwiększenia jej wielofunkcyjności oraz wskazanie stosownych narzędzi planistycznych. Podjęto próbę usystematyzowania potencjalnej interwencji planistycznej w strukturach przestrzennych wsi. Celem opracowania było także zilustrowanie na przykładzie fragmentu wsi Garbów w gminie Dwikozy możliwości kreowania nowego profilu istniejącej struktury wiejskiej o dość wysokim potencjaleturystyczno-rekreacyjnym, aby zwiększyć jej wielofunkcyjność. Potencjalnie działania takie mogą zmierzać do polepszenia podstaw ekonomicznych funkcjonowania wiejskich jednostek osadniczych, a także wpłynąć na ochronę i dalszy rozwój zasobów przyrodniczych. Koncepcja doposażenia terenów osadnictwa wiejskiego w ekstensywne elementy o charakterze turystyczno-rekreacyjnym, a także poprawa parametrów ekologicznych jest rozwiązaniem planistycznym mającym nacelu wzmacnianie naturalnych, istniejących walorów przyrodniczych i kulturowych tych terenów.W badaniach zastosowano metodę przeglądu i analizy wybranych gmin wiejskich w aspekcie atrakcyjnościprzyrodniczo-krajobrazowej i rekreacyjnej. Posłużono się przykładem gminy Mielnik nad Bugiem, której model zagospodarowania turystyczno-edukacyjnego może być ilustracją dobrego zastosowania prezentowanych idei o charakterze wzorcowym. W wyniku przeprowadzonych analiz zasobów istniejących gminy i wsi Garbów zaproponowano nowe rozwiązania obejmujące regulacje przestrzenne w kierunku funkcji turystycznych oraz proekologicznych.
Impact of N fertilization and cultivar on amaranth nutrients and soil health
Authors: Skwaryło-Bednarz Barbara , Jamiołkowska Agnieszka , Kopacki Marek , Marcinek Barbara , Szmagara Mariusz , Kot Izabela
Published: June 2024

The purpose of this study was to assess the effects of nitrogen (N) fertilization and cultivar on vitamin C content, total antioxidant capacity (TAC), and catalase (CAT) activity in amaranth leaves, as well as in the rhizosphere and non-rhizosphere soil. For this purpose, a 3-year split-plot field experiment was conducted, which included the following factors: N fertilization (kg ∙ ha–1: N0 – control, N1 – 60, N2 – 90, N3 – 120, N4 – 150), amaranth cultivars (‘Rawa’ and ‘Aztek’) and developmental stages (BBCH 13, BBCH 16, BBCH 19). The factor that most significantly differentiated the vitamin C content in the leaves was the cultivar, followed by the development stage, N fertilization, and weather conditions. The cultivar ‘Aztek’, stage BBCH 13, N3 fertilization, and weather conditions during the last year of the experiment gave the best results in this regard. CAT activity in the leaves significantly depended on N fertilization and developmental stage. It increased with the higher N dose and decreased with plant development. The TAC of the leaves depended only on the developmental stage and weather conditions. The highest TAC was observed at BBCH 13 and the third year of the study. CAT in the rhizosphere significantly depended on N fertilization, cultivar, and developmental stage, while in the non-rhizosphere zone, it depended on N fertilization, developmental stage, and weather conditions. This study is an essential addition to the knowledge on the use of amaranth seed forms as a vegetable with high nutritional value and antioxidant properties, as well as the effect of this plant on soil biological properties.
Effect of shear rate and saturation on shear strength of mineral and anthropogenic soil
Authors: Gruchot Andrzej , Zydron Tymoteusz
Published: June 2024

The aim of the study was to determine the shear strength of mineral and anthropogenic soil of similar grain size as a function of the applied shear rate and water saturation. Stability calculations using the finite element method of the road embankment model were also carried out to demonstrate the variation in factor of safety values depending on the adopted values of the angle of internal friction and cohesion. The tests were carried out in a direct shear apparatus in a 100 x 100 mm box with a sample height of 20.5 mm. The samples were formed directly in the apparatus box at optimum moisture content until a compaction index of IS = 1.00 was obtained. Tests were carried out under conditions without and with water saturation at shear rates of 0.01, 0.05, 0.1, 0.5 and 1.0 mm•min–1 until 18% horizontal displacement was achieved. The results showed that the effect of shear rate on the strength parameters was not unequivocal and was much smaller than the changes caused by saturation of samples. An increase in shear rate resulted in small changes in the angle of internal friction with a tendency towards a decrease. In contrast, cohesion varied over a much larger range with increasing shear rate, with an apparent initial decrease and subsequent increase. The saturation of the samples resulted in a decrease in the angle of internal friction of the cohesive soil and an increase for the ash-slag mixture. The cohesion of both soils decreased. The results obtained from the road embankment model stability calculations confirmed that soil saturation had a greater influence on the factor of safety values obtained than the shear rate.
A new method for predicting consolidation settlements of soft ground based on monitoring results
Authors: Meng Xiong , Zheng Jifa , Yang Biyu
Published: June 2024

Excessive settlement or differential settlement of subgrade will lead to the deterioration of line operational conditions, the reduction of passenger comfort, and even endanger the safety of traffic. Therefore, it is of great significance to study the settlement prediction of subgrade. In order to predict the settlement of foundation under the next level of loading earlier during the embankment construction process, a new method of predicting settlement of soft soil subgrade is proposed. Firstly, based on monitoring results of soft soil foundation, the consolidation parameters of soil layer are back-calculated according to the three-point method. Then, combined with the theory of the consolidation degree of graded loading, the formula that can predict settlement under different loading conditions are derived. Eventually, the practical application of the method is verified by the prediction and comparative analysis of measured settlements based on engineering examples. The result of research shows that the method can predict the foundation settlement after loading during construction of engineering fill. This method has obvious advantages over the traditional curve fitting method and can guide the actual engineering construction.
The influence of measurement conditions on the determined values of thermal parameters of different types of concrete
Authors: Garbalinska Halina , Matys Małgorzata
Published: June 2024

In recent years, great emphasis has been placed on the introduction of energy-saving solutions to the construction sector. Building envelopes made of concrete with a specially selected composition give great opportunities in this regard. As part of a wide-ranging experiment, the authors undertook to diagnose how much thermal conductivity, volumetric specific heat and thermal diffusivity can be improved with an aerating admixture and different types of aggregates. Three groups of composites were tested: B1 – on stone aggregate, B2 – on expanded clay aggregate, B3 – on sintered fly ash aggregate. Each of the groups was divided into 4 formulations made without an aerating admixture and with its increasingly higher content of 0.8, 1.1, 1.4% in relation to the weight of cement. The thermal parameters were measured on the top (T) and bottom (B) surfaces of 36 rectangular samples (3 samples from each of the 12 mixtures) with the ISOMET 2104 apparatus. Diagnostic tests concerning the influence of measurement conditions were carried out on dry and water-saturated samples. It has been proven that for each composite and in both conditions, the values of thermal parameters determined on the lower surfaces will not correctly describe the properties of the real structure present in the main volume of the element. Only measurements carried out on surfaces with a structure corresponding to the interior of the element provide adequate data that can be used in decision-making processes and in numerical simulations to assess the real thermal qualities of building envelopes.
Effect of different amount of CNFs on the properties of concrete and cementitious materials
Authors: Wu Ze
Published: June 2024

With the rapid development of the construction industry and higher requirements on the properties of materials, extensive studies have been made to improve the property of the concrete and cementitious materials. This paper mainly studies the mechanical property, anti-chlorine ion diffusion, anti-chlorine ion diffusion, anti-freezing performance, hydration process, microstructure and rheological property of the concrete and cementitious materials after adding cellulose nanofibers. Results showed that the compressive strength of C40 concrete with 0.15% cellulose nanofibers added was 75.72 MPa at 56 days of age, 23.11% higher than that of the control group. It was also higher than that of concrete with 0.20% cellulose nanofibers admixture added. When the content of cellulose nanofibers was 0.15%, the flexural strength reached the maximum value of 6.55 MPa, improving by 24% compared with the control group. Under the circumstances of 150 freeze-thaw cycles, the mass loss rate of C50 concrete with 0.15% CNFs admixture registered at 0.41%, reducing by 0.81% compared with the control group. However, when the cellulose nanofibers increased to 0.20%, the mass loss rate of the concrete reached 0.48%, indicating that adding an appropriate amount of cellulose nanofibers could improve the performance of the concrete. The study provides a strong scientific basis for modifying concrete and cementitious materials.
Accuracy analysis in determining the location of underground objects using GPR involving lidar data
Authors: Lejzerowicz Anna , Czernic Paweł , Pilarska-Mazurek Magdalena , Załęgowski Kamil , Górka Jakub , Bakuła Krzysztof
Published: June 2024

Ground penetrating radar (GPR) is one of the most useful non-destructive techniques for locating underground objects. Advancements in this technology have facilitated the development of new sensors over the past decade. In this paper, an accuracy assessment of the location of underground objects using various GPR antennas is presented. To achieve the stated goals, measurements of 5 concrete slabs, reinforced with steel bars of various diameters and located at variable depths were taken. The experiment includes the usage of three GPR antennas to assess the format, characteristics, and differences of extracted data. This set of antennas from different manufacturers varied in terms of operating frequency. Additional lidar data from TLS (terrestrial laser scanning) was utilized in the methodology to provide precise surface measurements and therefore, external orientation of the surveyed data. The experiment allowed for the determination of vertical and horizontal accuracy for three tested antennas and the assessment of increasing errors value with greater depth of the measured items, which is important for surveying accuracy forecasting.
Design and optimization analysis of pylon open lower corbel
Authors: Li Dong
Published: June 2024

This study, centered around the engineering context of the Wuxue Yangtze River Bridge, addresses the challenge of significant temperature-induced secondary internal forces in the short lower tower column. A novel open lower corbel tower scheme is proposed as a solution. Firstly, comprehensive finite element models are established for both the open lower corbel pylon scheme and the traditional lower continuous beam pylon scheme. These models are employed for finite element analysis to derive bending moments and displacements of the bridge pylon under various loads, including permanent, vehicle, temperature, and wind loads. Subsequently, considering internal force distribution and stiffness, a comparative assessment is made between the open lower corbel cable pylon scheme and the traditional lower continuous beam cable pylon scheme. The findings reveal that the open corbel structure bridge pylon exhibits lower transverse bending moment values under the influence of permanent load, vehicle load, temperature load, and wind load. This reduction is advantageous for mitigating the issue of significant temperature-induced secondary internal forces in the bridge pylon. Additionally, the transverse bridge stiffness of the open lower corbel cable pylon scheme is found to be on par with that of the lower continuous beam cable pylon scheme. Moreover, topology optimization of the original corbel design is accomplished using the relative density method. The computational results demonstrate that the corbel’s stress and deformation under vertical loads meet code requirements. These research findings offer valuable insights for the design and construction of similar projects.