bluuebunny/crossref_metadata_2025_split huggingface dataset:
Differentiated thyroid cancer in adolescents – does extent of disease at presentation differ with age?
Authors: Arya Priya , Wright Emily A. , Shaw Eric K. , Lubin Daniel J. , Prickett Kara K. 
Published: December 2024

Abstract

Objectives
The authors sought to assess whether the age of 18 reflects a true pathological inflection point that justifies transitioning between pediatric and adult paradigms of care with differentiated thyroid cancer (DTC).

Methods
A retrospective chart review was conducted for patients aged 12–24 undergoing hemithyroidectomy or total thyroidectomy for papillary or follicular thyroid carcinoma from 2010 to 2020.

Results
A total of 153 patients receiving surgery for DTC were assessed for pathological stage, nodal metastasis, and thyroid neoplasm characteristics. When comparing pathologic tumor staging of patients <18 vs. ≥18 years old, there was a significant relationship between age and pT stage (p=0.009), but not between age and pN stage (p=0.319). However, when comparing patients ≤15 vs. >15 years, there was a significant relationship between age and pT stage (p=0.015) and age and pN stage (p=0.016). Patients ≤15 years of age most commonly had stage pT2 tumors (48.9 %, n=22), whereas most >15 years had stage pT1 tumors (37.9 %, n=41). Of patients whose lymph nodes were analyzed, patients ≤15 years were most likely to have pN1b disease (31.1 %, n=14), while patients >15 years were most likely to have pN0 disease (33.3 %, n=36).

Conclusions
In this sample, separating children and adults at an age of 15, rather than 18, yielded more significant differences in risk of nodal involvement. Markers of invasive histology were more common in patients older than 15, while nodal involvement was more common in patients 15 and under.
Pediatric Graves’ disease in Argentina: analyzing treatment strategies and outcomes
Authors: Rothenfusser Anna , Chiesa Ana , Papendieck Patricia 
Published: December 2024

Abstract

Objectives
Graves’ disease is the leading cause of hyperthyroidism in children. Only a small percentage of pediatric patients achieve remission with anti-thyroid drug treatment (ATD), and both definitive therapies (thyroidectomy, or radioiodine thyroid ablation) cause lifelong hypothyroidism. Our objective was to evaluate the outcome of patients with pediatric Graves’ disease (PGD), treated at a single tertiary center, focusing on response to medical treatment, remission rate, adverse reactions (AR), definitive treatment (DT), and potential predictive factors for remission.

Methods
Data from clinical charts of 130 patients diagnosed with PGD between 2006 and 2021 were collected: epidemiological, clinical, biochemical characteristics, outcome, remission, adverse reactions (AR), and DT were registered. Predictive factors at diagnosis were evaluated for 88 patients diagnosed at our center.

Results
Our patients were 78 % female, 98 % Hispanic, with a median age of 12.7 years (range 1.7–17.3 years). Fourteen (11 %) had Down syndrome. Severe thyrotoxicosis (FT4>5.5 ng/dL) was seen at diagnosis in 66 %. Initially, 129/130 received ATD; during the study, 17 participants (13 %) reached remission, with a median ATD duration of 3.1 years (range 1.3–6.1 years). The chance of remaining hyperthyroid was 65 %. Only one patient relapsed 1.3 years post-ATD. Forty-six percent (59/129) needed DT, 31 % (40/129) were lost to follow-up, and 10 % (11/129) remained on ATD. AR affected 26 % of the patients and most (74 %) occurred within the first 3 months, half of them severe enough to discontinue ATD. No significant predictive factors were identified.

Results
ATD, our first-line treatment, resulted in low remission rates for Hispanic pediatric patients with severe thyrotoxicosis at diagnosis. Poor adherence issues contributed to the indication of DT (46 %) and loss to follow-up (31 %) during the studied period. Based on our findings, DT should be considered at 4 years of ATD in persisting PGD.

Conclusions
ATD, our first line treatment, resulted in low remission rates for Hispanic pediatric patients with severe thyrotoxicosis at diagnosis. Poor adherence issues contributed to the indication of DT (46 %) and loss to follow-up (31 %) during the studied period. Based on our findings, DT should be considered at 4 years of ATD in persisting PGD.
Numerical modelling of creep, agin and leakage of the prestressed reinforced concrete structure. Application to concrete containment building
Authors: Meng Try , Heitz Thomas , Richard Benjamin , Jason Ludovic , Bouhjiti David 
Published: December 2024

Abstract
The concrete containment building (CCB) is the third and last safety barrier to protect the environment from diffusion of radioactive products. In 2014, Électricité de France (EDF) launched the VERCORS project to improve the knowledge of leak-tightness in the CCB under air pressure loading and aging effects. VERCORS is in a 1:3 scaled CCB mock-up of a 1,300 MWe French pressurized water reactor (PWR). This paper presents a numerical methodology applied on VERCORS mock-up and numerical results focus on the gusset only, which is the lower part of the containment wall casted right after the base slab. Concrete is modeled through 3D elements while rebars and tendons are modeled by 1D elements. The simulation includes THM analysis of the gusset, prestressing phase and pressurization phase, and is conducted through a finite element code, Cast3M. The delayed strains including creep and shrinkage are especially considered. The instantaneous prestress losses, which result from friction; relaxation and pull-in at wedge, are taken into account. Regarding the long-term prestress loss due to the delayed strains, it is achieved by a kinematic relationship at interface of concrete-tendons. To describe cracks in concrete, an elastic damage model is used for the concrete elements, and the post-processing of leak-tightness is based on through crack leakage only. Those cracks appear usually at the early age phase given the restrained strains that the gusset undergoes during the hydration and hardening phase.
Plagioclase feldspars (Ca1-x
Na
x
)(Al2-x
Si2+x
)O8: synthesis and characterizations of mechanical weathering relevant to Martian regolith
Authors: Jundullah Hanafi Md. Izzuddin , Murshed Mohammad Mangir , Robben Lars , Gesing Thorsten M. 
Published: December 2024

Abstract
Plagioclase feldspars draw intensive research attention in planetary sciences because of their abundance in the Martian regolith. Crystal chemical studies on plagioclase feldspars would be of crucial importance for possible in situ resource utilization for future human settlement on Mars. This study focuses on the synthesis of representative plagioclase feldspars followed by simulation of mechanical weathering using ball milling. A series of (Ca1-x
Na
x
)(Al2-x
Si2+x
)O8 plagioclase feldspars is synthesized perfoming the solid-state method, where the endmembers are the anorthite (CaAl2Si2O8) and albite (NaAlSi3O8). The bulk chemical composition, particularly the Al/Si ratio, of each member is determined from energy-dispersive X-ray spectroscopy, which is supported by X-ray powder diffraction data Rietveld refinements. Selective plagioclase members (x = 0.0, 0.4 and 1.0) are mechanically weathered using high-energy ball milling, leading to significant changes of microstructural features such as average crystallite size and micro-strain. Total scattering data are collected using in-house X-ray facilities and analyzed by pair distribution function refinements. The vibrational modes of the samples are evaluated by Raman spectroscopy, complementing the local structural description.
ANALISIS OBJEKTIF TERHADAP KONTEKS SYAIR YANG BERTEMAKAN NILAI NASIONALISME PADA KUMPULAN PUISI AKU KARYA CHAIRIL ANWAR SEBAGAI ALTERNATIF BAHAN AJAR DI KELAS X SMA
Authors: Wulandari Diana , Pertiwi Hidayati R. Panca , Puspita Yeni Cania 
Published: December 2024

ABSTRAK
Karya sastra puisi merupakan sebuah karya tulis yang memiliki nilai estetik dan memiliki karakter yang unik. Karya sastra tidak akan lepas dari dunia Pendidikan dimana karya sastra akan selalu berhubungan erat dengan Pendidikan. Salah satu karya sastra terpopuler adalah karya sastra Chairil Anwar. Karyanya mengambarkan ideologi penyair. Peserta didik dapat mengenal karya sastra melalui pembelajaran sastra di sekolah. Dalam pengajarannya peserta didik harus diberikan bahan ajar yang sesuai dengan kemampuannya. Penelitian ini merupakan penelitian kualitatif deskriptif. Sampel penelitian ini berjumlah 10 peserta didik di kelas X SMA Perkappen Sinumbra Ciwidey. Peneliti menerapkan bahan ajar mengenai karya sastra Chairil Anwar kepada peserta didik dan memberikan soal pertanyaan kepada peserta didik untuk mengetahui pemahaman pada materi dari bahan ajar tersebut. Pada penelitian ini penulis meneliti syair yang bertemakan nilai nasionalisme, indikator nilai nasionalisme dan layak atau tidak jika di masukkan ke dalam bahan ajar kelas X SMA. Terdapat 3 syair yang bertemakan nilai nasionalisme dan 3 indikator nilai nasionalisme berdasarkan profil pancasila. Hasil penelitian ini menyimpulkan bahwa hasil pembelajaran dan LKPD yang peneliti lakukan kepada siswa SMA Perkappen Sinumbra kelas X sesuai dengan tujuan peneliti, yaitu hasil yang di capai layak berdasarkan standar KKM Bahasa Indonesia.
Kata kunci: analisis objektif, pendidikan, bahan ajar, LKPD.
Identifying the effect of carbonization temperature on the porous structure and electrical conductivity of activated carbon derived from quail eggshell
Authors: Maulina Wenny , Wardani Diah Wahyu , Putri Nutfah Anggiana , Nurhayati Arry Yuariatun , Arkundato Artoto , Syarifah Ratna Dewi , Edikresnha Dhewa 
Published: December 2024

The object of this study is to evaluate the potential of quail eggshells as a raw material for producing porous and electrically conductive activated carbon by focusing on the effect of carbonization temperature. The main problem solved is the lack of utilization of quail eggshell waste, despite its unique microporous structure and rich mineral and organic content. This underutilized waste, often discarded, represents an opportunity to align sustainable practices with the development of advanced materials for adsorbent and energy applications.
The results showed that the activated carbon produced at a carbonization temperature of 400 °C had superior properties compared to higher temperatures (500 °C and 600 °C), with the highest surface area and electrical conductivity. FTIR characterization identified important functional groups such as O-H, C=O, C=C, and CaO, which support the formation of the carbon framework and contribute to the stability and functionality of the material. XRD patterns confirmed the hexagonal carbon structure, a desirable feature for maintaining structural integrity in demanding applications. SEM revealed irregular morphologies, while BET analysis showed a combination of micropores and mesopores. Under optimal carbonization conditions, activated carbon produced at 400 °C offers a combination of structural and conductive properties. It achieved a specific surface area of 296.875 m2/g, indicating excellent porosity for adsorption applications. Additionally, the material exhibited an electrical conductivity of 1.62×10-2 S/cm, which is suitable for energy storage devices such as supercapacitors and batteries. The decrease in these properties at higher carbonization temperatures highlights the importance of optimizing synthesis parameters to achieve desired outcomes.
These structural and conductive properties make the material suitable for advanced applications in environmental remediation, renewable energy, and waste management. By converting quail eggshells into high-value activated carbon, the study demonstrates a feasible approach to reducing waste while contributing to eco-friendly material development. This study proves that quail eggshells can be effectively utilized, adding value to organic waste while increasing its economic viability
Determining the vertical load on a container with a floor made of sandwich panels transported by a flat wagon
Authors: Lovska Alyona , Stanovska Iraida , Kyryllova Valeriia , Okorokov Andrii , Vernigora Roman 
Published: December 2024

loads in the structure of a container with a floor made of sandwich panels under operational modes.
To ensure the strength of the container, as well as the safety of the cargo transported in it, it is proposed to design a floor based on sandwich panels. It is assumed that each of these panels is made of two metal sheets in a layer between which an energy-absorbing material is placed. Given the presence of energy-absorbing material in the structure of the sandwich panel, the vertical dynamic loads acting on the cargo container during its transportation will be reduced.
To substantiate the proposed solution, mathematical modeling of the vertical load on the container during its transportation by a flat wagon was carried out. It is found that the accelerations acting on the container of the improved design are 5.7 % lower than those acting on the container of standard design.
The calculation of the strength of the container was carried out under operational schemes of its loads. It has been established that the strength of the container is ensured.
A special feature of the results is that the reduction of the load on the container is achieved not by strengthening its structure but by introducing flexible connections into it.
The field of practical application of the results is railroad transport. The conditions for the practical use of the findings are the use of energy-absorbing material in the structure of sandwich panels that form the floor of the container.
The results of the research will contribute to improving the strength of containers under operating conditions, the safety of the cargo transported in them, as well as increasing the efficiency of the functioning of container transportation
Development of a hexacopter model for transporting medicines with noise reduction
Authors: Darayev Abdumezhit , Khizirova Muhabbat , Samsonenko Anatoly , Ibekeyev Serikbek , Ilyas Daulet 
Published: December 2024

The object of research is a helicopter-type copter. For the test flight of the prototype, high level of noise in the Wi-Fi block channel was noticed. To solve the problem Kalman filter was installed to the system between the antenna and microprocessor, for noise cancellation. A technical model that takes into consideration the time variation of the interference/signal ratio at the input of the UAV receiver for given trajectories and speeds of movement of objects and the source of interference has been developed that allows the delivery of medications up to 2 kg with a flight range of 5 km when exposed to interference from a moving source.
This article provides a prototype of the hexacopter design for small carriage delivery, used for medicinal transportation. During the test usage of the prototype UAV, such problems as shaking and unstable fixation of the lock mechanism holding the delivered cargo are observed and noted. The article underlines the cause of said problems as electromagnetic compatibility considerations, the methodology of debugging was to measure signals with oscilloscope and servotest, and provides the solution as application of Kalman filter for antennas. The results of the oscilloscope and spectrum analyzer during the debugging process before and after optimization by Kalman filter usage for noise filtering are shown. Signal noise can cause malfunctions of components, during signal decoding. The UAV prototype showed delayed response during test flight for approximately 0.2 s, which can be critical for flight and delivery precision. Telemetry, navigation, control, data, power supply, engine design, and software considerations are given. The results are not yet sufficient for urban usage, where EMI density is much higher, but the current developments make the suburban usage of UAVs for long range transportation
Application of thermography to detect areas of water infiltration in the dam concrete foundation
Authors: Miahkyi Oleksandr , Meshkov Sergiy , Orel Roman , Storozhenko Volodymyr 
Published: December 2024

This paper introduces a methodology devised for thermographic inspection of concrete technical condition inside concrete dams. Water infiltration into a dam accelerates the processes of concrete degradation, so temperature fields provide important information about the dynamics of these processes. As a result of the thermal imaging survey of the observation gallery at a historic hydraulic structure, a formalized pattern of the temperature field inside the dam was acquired and the locations of temperature anomalies associated with infiltration were identified. At the leakage points, the water temperature differed from the concrete temperature by 1.0–2.9 °C, indicating different rates of water flow through the water wall and the gallery ceiling. The temperature of the gallery areas with increased infiltration was 1–2 °C higher than the 12.7 °C selected as the reference temperature. When recording the temperature fields, the optical axis of the thermal imager was directed along the gallery, and not perpendicular to the surfaces under study, as in construction thermography. To this end, a methodological approach was devised to eliminate distortions of the resulting thermograms caused by the curvature of the gallery and other factors. To remove images of extraneous thermal radiation sources from the thermograms and accurately identify the area under study, a method of shielding a part of the image using special masks was used. The comparative thermography method made it possible to eliminate difficulties in determining the emissivity of the gallery concrete surface. The proposed method of comparative thermography made it possible to compare the intensity of filtration processes in the dam body and to link the current state of the hydraulic structure with the history of its restoration. In general, the thermographic method makes it possible to supplement existing primary natural control with a formalized pattern of temperature field inside the dam
Assessment of digital culture in sustainable university development systems
Authors: Prokhorova Viktoriia , Mrykhina Oleksandra , Koleshchuk Orest , Stepura Tetiana , Zaitseva Anna , Slastianykova Krystyna 
Published: December 2024

The object of this study is the processes of assessing digital culture, the purpose is to devise methodological foundations for assessing digital culture in the systems of sustainable development of universities. The problem of insufficient methodological support for assessing digital culture makes it impossible to effectively manage the sustainable development of the university. The study is based on the example of projects carried out by students at the Lviv Polytechnic National University's course ‘Fundamentals of Entrepreneurship and Business Planning Using IT’, which applies digital technologies based on sustainable development. For the expert evaluation of the digital culture of student projects, a system of indicators has been formed that comprehensively covers it (‘digital security’, ‘digital literacy’, ‘creativity in the digital environment’, ‘use of social networks and communications’, ‘innovation’, ‘digital rights and ethics’). The diversity of the indicators was agreed upon by establishing their significance and using the Saati pairwise comparison method. The substantiation of the digital culture indicators was implemented with the help of a mathematical model based on the matrix approach, using the methods of fuzzy set theory. The calculation of the significance of the digital culture indicators showed that the largest share is accounted for by the indicators ‘digital literacy’ (36 %), ‘digital rights and ethics’ (28 %), ‘digital security’ (16 %), ‘creativity in the digital environment’ (12 %). The lowest is ‘use of social networks and communications’ (4 per cent) and ‘innovation’ (4 per cent). In order to measure the level of digital culture, a pairwise comparison of the projects for each indicator was performed. On the basis of resulting estimates, the corresponding matrices of pairwise comparisons of projects were constructed, for each of which the measures of belonging of elements to a fuzzy set were established. The fuzzy sets were defined, which indicate the degree of certainty in the compliance of student projects with the indicators of digital culture. Based on the results of testing, the student project ‘MyNature’ satisfies the group of indicators of the level of digital culture by 71.2 %, ‘HealthyWay’ – by 53.5 %, ‘!!!Boooya’ – by 48.8 %. The other projects – FizMat:), Medix, and ‘Їііііisty!’ – 36.3 %, 36.4 %, and 42.1 %, respectively
Design of an intelligent system for enhancing urban social resilience
Authors: Lipianina-Honcharenko Khrystyna , Komar Myroslav , Madarash Roman , Novosad Stanislav , Zhabiuk Volodymyr , Mykhalchuk Nazar , Koshytskii Kostiantyn , Lendiuk Dmytro , Melnyk Nazar , Telikhovskyi Oles 
Published: December 2024

This paper considers a comprehensive approach to the use of intelligent systems in the context of smart cities, which is aimed at increasing their social sustainability under the conditions of growing urbanization and globalization.
Cities face challenges related to the need to optimize the management of urban resources and improve the quality of life of residents, which requires innovative approaches to planning and the use of advanced technologies.
The proposed intelligent system architecture, integrating six modules such as quality of life modeling, socio-economic analysis, intelligent tourism, environmental monitoring, legal interpretation, and misinformation detection, has demonstrated a 25–40 % performance improvement depending on the module.
The effectiveness of the proposed system is explained by the use of advanced algorithms of machine learning and data analysis, which makes it possible to reduce the time of solving critical tasks and increase the adaptability of the city infrastructure to future challenges.
Owing to the integration of intelligent systems into city management, cities gain the ability to respond more effectively to current and projected social and environmental challenges, significantly improving the quality of life and environmental sustainability.
The proposed system could be implemented in cities of different sizes and configurations, contributing to long-term socio-economic development and environmental sustainability. Effective implementation of the system reduces city management costs by up to 30 %, while reducing CO2 emissions by 10–15 %, which is important in the context of combating climate change