bluuebunny/crossref_metadata_2025 huggingface dataset:
Efficiency of sowing facilities in technologies for cultivating spring soft wheat in the steppe zone of the Omsk region
Authors: Mikhaltsov Evgeniy M. , Kem Alexander A. , Shmidt Andrey N.
Published: December 2024

BACKGROUND: Currently, when purchasing equipment, agricultural enterprises are given the opportunity to choose from a large number of brands and models of sowing machines, both of domestic and foreign production, the choice between which is made difficult for farms by the lack of performance indicators obtained under identical conditions.
AIM: Determination of the effectiveness of using various sowing units within the framework of four technologies for cultivating spring soft wheat in the steppe zone of the Omsk region.
METHODS: The source of data in the study is the industrial field experiment conducted in the steppe zone of the Omsk region on the basis of the Novouralskoye scientific and production enterprise and economic accounting information.
RESULTS: Research has shown that the minimal cost for sowing a unit of area is ensured by the SKP-2.1 seven-seeder units with the K-742M and the RSM 2400 tractors (at the level of 1389-1646 rubles/ha). The sowing unit consisting of the RSM 2400 tractor and the Amazone Condor seeding facility proved to be more than twice as expensive as the SKP-2.1 (+124...166% to the level of costs for sowing with the SKP-2.1 seeder unit). The intermediate position between the SKP-2.1 seven-seeder and the Amazone Condor units was occupied by the Salford sowing units with the K-742M, the RSM 2375 and the RSM 2400 tractors (+93...147% to the level of costs for sowing using the SKP-2.1). At the same time, more expensive sowing units are also more productive. Thus, the units that included the Salford sowed on the area by 1.1-1.26 times more per hour of shift time in average than the seven-seeder unit with the SKP-2.1, and for the Amazone Condor this figure was 1.6-1.72. The use of various options for completing units and the use of chemical agents in the experiment led to a more than sevenfold variation in the cost of sowing according to the options, from 1389 rubles/ha (when sowing with the SKP-2.1 seven-seeder sowing unit and the K-742M tractor without the use of chemical agents) to 9,795 rubles/ha (when using the Amazone Condor in a unit with the RSM 2400 tractor with a pre-sowing application of 90 kg/ha of ammophos over a field pre-treated with the Sprut-Extra herbicide at a rate of 2.5 l/ha). The integrated use of chemicals in the experiment gave an increase in yield compared to options without chemization, but the cost of their use in the experiment significantly reduced the economic efficiency of production of the final product.
CONCLUSION: The practical significance of the study lies in obtaining the data that can be the basis for choosing a specific model of sowing facilities for the conditions of a particular farm.
The South Island Seismology at the Speed of Light Experiment (SISSLE): Distributed Acoustic Sensing Across and Along the Alpine Fault, South Westland, New Zealand
Authors: Miller Meghan S. , Townend John , Lai Voon Hui
Published: December 2024

Distributed acoustic sensing (DAS) is positioned to revolutionize observational seismology by providing dense spatial sampling and temporal resolution. DAS repurposes long sections (1–10s of kilometers) of fiber-optic cable into thousands of individual sensors at meter spacing and uses light to measure the ground motion as seismic waves pass through the fiber. The South Island Seismology at the Speed of Light experiment involved the acquisition of DAS data from two dark telecommunication fibers along the highway near Haast, South Westland, New Zealand that run perpendicularly across the Alpine Fault and subparallel to the Alpine Fault and Tasman Sea coastline. The DAS acquisition was supplemented by the deployment of 24 nodal seismometers within 1 km of the surface trace of the Alpine Fault. We introduce the experimental setup, share initial processing steps, and preliminary observations from the DAS array deployed in two phases for nearly five months between late-February and mid-May 2023 and again in October–November 2023.
Accuracy and Precision of Earthquake Location Programs: Insights from a Synthetic Controlled Experiment
Authors: Yu Yifan , Ellsworth William L. , Beroza Gregory C.
Published: December 2024

Earthquake location programs employ diverse approaches to address the challenges posed by incomplete knowledge and simplified representation of complex Earth structures. Assessing their reliability in location and uncertainty characterization remains challenging as benchmark datasets with known event locations are rare, and usually confined to particular sources, such as quarry blasts. This study evaluates eight earthquake location methods (GrowClust, HypoDD, Hypoinverse, HypoSVI, NonLinLoc, NonLinLoc_SSST, VELEST, and XCORLOC) through a controlled synthetic computational experiment on 1000 clustered earthquakes based on the setting of the 2019 Ridgecrest, California, earthquake sequence. We construct a travel-time dataset using the fast-marching method and a 3D velocity model extracted from the Community Velocity Model, supplemented with a von Karman perturbation to represent small-scale heterogeneity, and including elevation effects. Picking errors, phase availability, and outliers are introduced to mimic difficulties encountered in seismic network monitoring. We compare the location results from eight programs applied to the same travel-time dataset and 1D velocity structure against the ground-truth locations. For this aftershock sequence, our results reveal the superior accuracy and precision of differential time-based location methods compared to single-event location methods. The results validate the significance of compensating for deviations from assumed 1D velocity structure either by path or site correction modeling or by cancellation of unmodeled structure using differential arrival times. We also evaluate the uncertainty quantification of each program and find that most of the programs underestimate the errors.
Innovative Approaches for Improving ORC Performance: A Review of Pure Fluids, Zeotropic Mixtures, and Nanoparticles
Authors: Kumi Ebenezer , Veeredhi Vasudeva Rao , Enweremadu Christopher
Published: December 2024

Although the organic Rankine Cycle (ORC) is said to effectively capture low-grade heat, its commercialization has been limited because of working fluid constraints and inefficiencies resulting from operating at low temperatures. This study reviews the working fluids used in organic Rankine cycles and examines how nanoparticles could enhance the efficiency of the ORC, by enhancing the thermophysical properties of the working fluids. Results from this review showed that zeotropic mixtures of pure fluids, provide a viable approach to improving the thermophysical characteristics of organic working fluids and have the potential to achieve thermo-economic performance superior to that of individual pure fluids. Research results on the relative effectiveness of zeotropic mixtures and pure fluids, however, are conflicting and call for further study. Although nanofluids have shown potential as heat transfer fluids, there has not been much research done on them as organic Rankine cycle working fluids. In comparison to typical nanoparticles, metal-organic heat carriers have been recognized as having substantial potential to improve organic Rankine cycle thermodynamic efficiency. Future study on nanofluids, particularly in zeotropic mixtures, is crucial for the creation of new working fluids for developing ORCs that could achieve a balance between thermodynamic, economic, and environmental performance required to recover low-grade heat and the generation of electricity.
Structural Simulation of Wheelchair Ramp using Finite Element Method
Authors: Lenggana Bhre Wangsa , Nugroho Agung , Ubaidillah Ubaidillah
Published: December 2024

Wheelchairs are essential mobility aids for people with disabilities, but they are often limited to flat surfaces and cannot overcome height differences. Portable ramps are an effective solution to overcome this limitation. This research aims to simulate and analyze the structure of a portable ramp for wheelchairs. Simulations were conducted using finite element method analysis software to assess the portable ramp's von Mises stress, deformation, and safety factor in various loading positions. Finite element method (FEM) analysis software was utilized to evaluate key mechanical properties, including von Mises stress, deformation, and safety factor, under different loading conditions and positions. The simulation results demonstrated that the proposed portable ramp design can safely endure various load placements without exceeding the material's stress limits. The von Mises stress, deformation, and safety factors remained within acceptable ranges, validating the ramp's structural integrity and safety. Based on the initial findings, design modifications were implemented to further enhance the ramp's strength, durability, and user safety. This research not only confirms the effectiveness of the proposed ramp but also suggests improvements to optimize its performance. The final portable ramp design offers a reliable, cost-effective, and market-competitive solution that can significantly improve the mobility and independence of wheelchair users, enabling them to navigate a broader range of environments and overcome everyday obstacles with greater ease and confidence.
Simulation-based Methodology to Investigate the Impact of Material Type and Compressive Speed Variation on Effective Strain Rate and Springback
Authors: Amrullah Radhi Nurvian , Hadi Syamsul , Rizza Muhammad Akhlis
Published: December 2024

To obtain the desired results in the manufacturing process, especially the bending process, the occurrence of springback must be reduced. The effective strain rate must be increased to predict the increase in material. This study uses a simulation method to determine the influence of material type and compressive speed variation on spring back and effective strain rate. This study uses 3 kinds of materials: JIS SPHD, JIS A1100 BE, and JIS SN400A, and speed variations, namely: 90 mm/s, 105 mm/s, and 120 mm/s. This study shows that JIS SN400A material has the smallest springback value compared to JIS A1100 BE and JIS SPHD materials because the nitrogen content in JIS SN400A makes it more plastic. At a compressive speed of 105 mm/s, springbacks tend to decrease in JIS SN400A, JIS SPHD, and JIS A1100 BE materials caused by residual stress. The average effective strain in JIS SN400A material increases in line with the increase in compressive speed, because JIS SN400A material has the highest melting temperature compared to JIS SPHD and JIS A1100 BE materials to reduce the risk of residual stress, the nitrogen content in JIS SN400A material also plays a role in increasing the effective strain value.
Turbine Engine Reliability Analysis Using Reliability Availability Maintainability (RAM)
Authors: Novareza Oyong , Darmawan Zefry , Setyanto Nasir Widha , Mohamad Effendi Bin
Published: December 2024

Electrical energy is a vital necessity characterized by ever-increasing electricity consumption. The most dominating power plant in Indonesia in supplying electricity is the steam power plant, which is 50%. In its implementation, there is damage that occurs where the highest damage is to the general unit with the highest damage to the turbine unit. Therefore, the author uses the reliability, availability, and maintainability method or RAM. The purpose of this study is to determine the value of RAM on the turbine system at PLN and provide recommendations for improvements to system performance. The results showed that the MTTF and MTTR values of the components are 112,916 minutes and 7,705.91 minutes, respectively. The MTTF value of the equipment indicates in one year the shutdown occurs 4 to 5 times with a relatively short period of time to repair. RAM analysis is carried out and the value is 4.96% (reliability), 93.612% (availability), and 36.44% (maintainability). It can be interpreted that reliability of the system is low due to the frequency of errors, quite difficult to do a repair procedure, but the system is fairly working in good condition in a year period.
Innovations in Additive Manufacturing for Socket Fabrication: An Overview
Authors: Faiza Linda Ziyadatul , Caesarendra Wahyu , Lestari Wahyu Dwi
Published: December 2024

Additive Manufacturing (AM) has transformed the prosthetics industry, particularly in socket production, which plays a critical role in the comfort, fit, and functionality of prosthetic limbs. This article examines the latest advancements in AM technologies and their applications in socket fabrication. Key techniques like stereolithography (SLA), selective laser sintering (SLS), and fused deposition modeling (FDM) have facilitated the production of highly personalized, lightweight, and durable prosthetic sockets. These methods not only improve design precision but also allow for the use of biocompatible, flexible materials, enhancing both comfort and functionality. Digital design tools have streamlined the production process, reducing lead times and costs, while improving accuracy and repeatability in socket manufacturing. This review explores the current state of AM in prosthetic socket development, emphasizing the benefits, challenges, and future directions of this fast-evolving field. By analyzing recent research and case studies, the article provides insights into how AM is reshaping prosthetics, offering more accessible solutions for individuals needing prosthetic limbs. It also discusses the challenges of material selection, regulatory considerations, and the potential for scaling production for broader use.
Analysis of Biomass Briquette Mixed Bagasse and Sugarcane Peel on the Performance of Forced Top-Lit Updraft Gasifier Stove
Authors: Hardiatama Intan , Enruico Aron , Hermawan Yuni , Trifiananto Muhammad , Syuhri Skriptyan N. H.
Published: December 2024

The population growth in Indonesia from 270 million in 2020 to 279 million in 2024 has increased LPG consumption, potentially leading to future fuel shortages. The top-lit updraft (TLUD) gasifier stove using renewable biomass materials, offers a sustainable alternative. Biomass such as bagasse and sugarcane peel can be optimized into charcoal briquettes with high calorific value and low emissions. The calorific value of briquettes can be further enhanced by blending other high–calorific biomass materials. This experimental research focuses on testing the calorific value of raw bagasse and sugarcane peel before carbonization, as well as briquette mixtures (70:30, 50:50, 30:70) using a bomb calorimeter. The fuel briquettes are tested by operating the TLUD gasifier stove, measuring performance in terms of water boiling time (WBT) and flame characteristics. Results show that the 30:70 bagasse-to-sugarcane peel composition has the highest calorific value (6,242.292 cal/gram), followed by the 70:30 composition (6,094.753 cal/gram) and the 50:50 composition (5,657.935 cal/gram). The 30:70 ratio also achieved the longest flame duration (119 minutes 32 seconds), the highest combustion chamber temperature (570.2°C), and the greatest flame height (11.468 cm). The TLUD stove demonstrated an efficiency of 56.41%, with a char weight of 61 grams and a water temperature increase from 28.4°C to 90.4°C in 10 minutes 45 seconds. These briquettes met the SNI 01-6235-2000 standard, which requires a minimum calorific value of 5000 cal/g.
Analysis of Titanium Mesh Ti6Al4V Formation Using Die Press Forming Machine for Cranioplasty
Authors: Rizal Ahmad Ayyub Syaiful , Darsin Mahros , Wibowo Robertoes Koekoeh K. , Anam Khairul
Published: December 2024

Cranioplasty is required for patients with head defects, where the deformed part of the head is replaced with Ti6Al4V titanium wire implants. The titanium wire forming process is usually done manually, which can take a long time and give results that do not match the anatomical shape of the head. Therefore, it is important to develop domestic technology that can produce titanium wire automatically. This study aims to analyze the frame and mold of the automatic wire mesh molding machine before production. The tool is made using press forming method and finite element analysis with ANSYS software. The machine frame is made of 304 stainless steel material, while the mold uses ABS material. The analysis was performed with a constant load force of 100 N, corresponding to the maximum reading on the load cell. The simulation results show the deformation, strain, and von Mises stress of the machine frame and punch model, which are still far below the plastic deformation and UTS values of the material. However, the analysis results on the Ti6Al4V titanium die and mesh exceeded the UTS of the material in the cutting edge area of the die. Nevertheless, the die model can still be used because the maximum stress point is located at the edge of the die design area, where the titanium mesh will be cut when applied to the patient's skull implant. The results of this study are expected to help medical personnel in skull implant surgery and analysis of press machine manufacturing.
Tactical Activities to Improve the Effectiveness of Concrete Batching Plant Based on Overall Equipment Effectiveness Analysis
Authors: Ekawati Yurida , Sutrisno Iddo Christian , Oktiarso Teguh
Published: December 2024

The growth of infrastructure projects has led to an increased demand for ready-mix concrete. A company that produces ready-mix concrete using a batching plant encountered difficulties in fulfilling customer orders due to the high rate of machine downtime. Overall equipment effectiveness (OEE) was employed to examine these issues at the tactical activities, where the root causes of losses that occur in the OEE components of availability, performance, and quality were addressed. The OEE analysis was extended to encompass maintenance effectiveness measures, as the anticipated solution to the problem was not the replacement of the machine, but rather an enhancement of its operational efficacy. The effectiveness of maintenance activities was measured using MTTF (mean time to failure), MTTR (mean time to repair), and MTBF (mean time between failure). A review of the OEE components revealed a necessity to reduce losses, as evidenced by the availability and performance rates. Although the performance rate has the lowest value, based on the frequent occurrence of failures to the availability component, the improvement process was carried out to overcome problems in the availability variable. The implementation of scheduled maintenance at the beginning of each month and the implementation of daily checks before and after the machine was used resulted in an increase in the OEE value from 56.62% to 71.15%. The incorporation of maintenance analysis into OEE has been shown to result in increased OEE values, as evidenced by a longer mean time between failures, a reduced time for process adjustments, and a decreased asset repair time.
Pengembangan Model Pembelajaran Berbasis Literasi Digital untuk Meningkatkan Hasil Belajar Siswa Sekolah Dasar
Authors: Lestari Wardha Dwi , Yuniawatika Yuniawatika , Rahmawati Heny
Published: December 2024

Literasi dan dunia pendidikan memiliki hubungan yang sangat erat, bahkan ada yang berpendapat bahwa budaya literasi tidak dapat dipisahkan dari dunia pendidikan. Peningkatan kemampuan literasi tidak hanya berkontribusi pada prestasi peserta didik, tetapi juga menjadi kunci kesuksesan mereka di masa depan. Perkembangan zaman telah membawa kita menuju era literasi digital, di mana kemampuan untuk memahami dan menggunakan teknologi digital menjadi sangat penting dalam pengembangan keterampilan membaca peserta didik, terutama di jenjang pendidikan dasar. Generasi saat ini tumbuh dan berkembang di lingkungan yang dikelilingi oleh teknologi, sehingga pemahaman tentang literasi digital menjadi suatu keharusan. Ketika peserta didik memahami literasi digital, mereka akan memperoleh berbagai manfaat, seperti peningkatan kemampuan berpikir kritis yang memungkinkan mereka untuk lebih baik dalam memahami informasi dan berbagai aspek kehidupan. Selain itu, literasi digital juga berperan dalam membangun karakter peserta didik. Untuk mencapai hal tersebut, penting bagi para guru untuk mengoptimalkan pengajaran baik dari segi pengetahuan maupun praktik literasi digital dalam proses pembelajaran. Guru harus mampu memahami dan mengimplementasikan literasi digital, sehingga peserta didik tidak hanya menjadi konsumen informasi, tetapi juga menjadi produsen yang kreatif dan kritis.
Media Rollade sebagai Pendekatan Inovatif dalam Pembelajaran Berdiferensiasi untuk Meningkatkan Kemampuan Menulis Teks Tanggapan
Authors: Rizkian Selvi , Sulistyorini Dwi
Published: December 2024

Tujuan dari penelitian ini adalah untuk mengetahui efektivitas media pembelajaran "ROLLADE" dalam mengatasi permasalahan terkait keseragaman konten pada keterampilan menyusun teks tanggapan peserta didik di kelas 9F SMPN 4 Malang, sebagai implementasi dari pendekatan pembelajaran berdiferensiasi. Dalam penelitian ini, digunakan pendekatan kualitatif deskriptif yang diterapkan melalui metode STAR, yang terdiri dari empat tahap: Situasi, Tantangan, Aksi, dan Refleksi. Pada tahap situasi, peneliti mengidentifikasi kondisi awal keterampilan menyusun teks tanggapan peserta didik dan menemukan adanya keseragaman konten yang menghambat kemampuan mereka. Selanjutnya, pada tahap tantangan, peneliti mengeksplorasi berbagai faktor yang menyebabkan permasalahan ini, seperti kurangnya variasi materi dan metode pembelajaran yang digunakan. Tahap aksi melibatkan penerapan media “ROLLADE” dalam proses pembelajaran, yang dirancang untuk memberikan variasi konten dan meningkatkan keterlibatan peserta didik. Akhirnya, tahap refleksi dilakukan untuk menganalisis hasil dari penerapan media tersebut. Hasil penelitian menunjukkan bahwa media "ROLLADE" terbukti efektif dalam mengatasi keseragaman konten yang akan ditanggapi oleh peserta didik kelas 9F, sehingga mampu meningkatkan keterampilan mereka dalam menyusun teks tanggapan dengan lebih kreatif dan bermakna.
Perancangan Desain Karakter dan Asset Animasi Live2D untuk Video Musik Original Song Kataomoi No Smile oleh Pirrou Sophie
Authors: Syampuri YZ Sae Riskina , Pahlevi Andreas Syah
Published: December 2024

Pirrou Sophie, seorang VTuber asal Indonesia, meluncurkan lagu orisinal pertamanya yang berjudul "Kataomoi no Smile" pada tahun 2023. Lagu ini menggambarkan perasaan terpendam seorang gadis yang dilatari melodi ceria khas lagu idol Jepang, memberikan sentuhan emosional yang kuat melalui lirik yang menggugah hati. Dengan tujuan menyampaikan cerita dari lagu tersebut secara lebih visual, Pirrou Sophie memilih video musik sebagai media promosinya. Video musik ini dibuat menggunakan teknik animasi Live2D, yang memungkinkan ilustrasi 2D bergerak seolah-olah memiliki dimensi 3D. Teknik ini menjadi pilihan karena kemampuannya untuk memberikan nuansa dinamis pada karakter yang digambarkan, sehingga semakin memperkuat perasaan dan pesan yang ingin disampaikan oleh lagu. Desain karakter dan asset animasi Live2D terinspirasi dari gaya anime/manga Jepang, yang tidak hanya memberikan kesan otentik pada penggemar genre tersebut, tetapi juga menciptakan karakteristik yang mendalam yang selaras dengan cerita dalam lagu. Untuk mendukung pengalaman visual yang lebih imersif, video musik ini juga dilengkapi dengan elemen-elemen tambahan seperti latar belakang dan ilustrasi pendukung lainnya yang memperkaya suasana cerita. Latar belakang yang dirancang dengan cermat berfungsi untuk memperkuat tema dari lagu dan menciptakan atmosfer yang sesuai dengan perasaan terpendam yang diungkapkan oleh sang protagonis. Sebagai sarana promosi, video musik ini tidak hanya dimaksudkan untuk mengenalkan lagu "Kataomoi no Smile" kepada publik, tetapi juga diharapkan dapat menarik minat penggemar baru serta memperkuat loyalitas penggemar lama. Kehadiran video musik ini memberikan dimensi visual yang memperkaya pengalaman mendengarkan, serta menjadi platform yang memperlihatkan kreativitas Pirrou Sophie sebagai seorang VTuber yang tidak hanya berbakat dalam bernyanyi, tetapi juga dalam merancang pengalaman visual yang unik dan menarik.
Does the thickness of temporal muscle indicate sarcopenia and functional outcome in older patients with acute stroke?
Authors: Ongun Nedim
Published: December 2024

Background and purpose – Aging,
inactivity, malnutrition and diseases cause
sarcopenia and stroke is an important
reason of sarcopenia. The aim of this study
was to determine the sarcopenia and to
evaluate the relationship between functional
outcome and temporal muscle thickness
using brain CT in older acute stroke patients.
Methods – A retrospective study was
conducted with acute stroke patients in a
single neurology clinic. A total of 114 patients
aged 65 years and older were included.
Temporal muscle thickness was measured
manually using brain computed tomography
on admission and third month. Sarcopenia
risk and modified Rankin scale scores at 3
months after stroke were assessed.
Results – The mean temporal muscle
thickness was 5.85±0.96 on admission and
5.67±0.97 on third month in the entire
group (p=0.004). Patients with sarcopenia
risk score ≥4 on third month, the mean
temporal muscle thickness was 5.63±1.02
and 5.32±0.98 on admission and 3rd
month respectively (p<0.001). There was
a significant correlation between baseline
temporal muscle thickness and age (r=-
0.728, p<0.001) and body mass index (r=
0.360 , p=0.017). 23 patients (20.1%) had
poor functional outcome at 3 months after
stroke (mRS>3). A significant correlation was
found between temporal muscle thickness
on admission and the third month modified
Rankin scale score (r=-0.613, p<0.001).
Conclusion – Measurement of temporal
muscle thickness using brain CT in stroke
patients may be a useful method for muscle
mass determination and treatment of
sarcopenia.
Osteosarcoma: A comprehensive review of model systems and experimental therapies
Authors: Robbins Gabrielle , Vue Young , Rahrmann Eric P. , Moriarity Branden
Published: December 2024

Osteosarcoma (OSA) is a highly malignant bone tumor for which more than 50% of patients have or will develop metastatic disease, resulting in an abysmal 5-year survival rate of <29%. Despite the advances in science and medicine, the etiology of OSA remains unclear. Similarly, the standard of care (surgery and chemotherapy) has changed little in the past 5 decades. This stagnation in treatment options is in part due to inadequate preclinical models for OSA; many of these models are oversimplified and do not account for the complexities of patient disease. Further, current treatments are harsh and invasive (e.g. high dose chemotherapy and potential limb removal) leading to a reduction in a patient’s quality of life (e.g. hearing loss, infertility, neuropathy), highlighting a need for developing more effective treatment strategies. Many experimental therapies have been tested in the preclinical and preclinical setting, with varying degrees of success. In this review, we will focus on pediatric and adolescent OSA, highlighting current animal models and experimental therapies.
Clinical characteristics and disability of subjects with migraine in a tertiary Centre in Mangalore: A Cross-Sectional Study
Authors: Bhusari Shubham , Saka Deepthi , Pai Rohit
Published: December 2024

Background: Migraine is the second most common cause of headaches and the most common headache-related neurological disability in the world. It is commonly linked with a broad range of psychiatric comorbidities. There has been a reported increase in the prevalence of migraine-related disability in patients who develop mood disorders due to migraine. This study is driven by the rising incidence of disability and deteriorating health-related quality of life observed in a significant portion of migraine patients. Approximately one-third to half of these individuals experience inadequate diagnosis and treatment, while two-thirds report mood changes associated with their condition. Addressing these gaps is crucial for improving overall patient outcomes and quality of life.

Methods: This cross-sectional study has been carried out in the duration of one month in which the subjects with migraine were recruited by consecutive sampling amongst those aged 16-64 years from Mangalore, diagnosed with migraine based on the International Classification of Headache Disorders (ICHD), with the major demographic variables of age, gender, education, occupation, and marital status, socio-economic status and assess some of its clinical features, including aspects of consequential disability using a previously validated Migraine disability assessment (MIDAS) questionnaire.

Results: A total of 50 patients were studied. The study shows a female preponderance of 74%. The prevalence of migraine varied with age, rising through early adult life and declining in the late 40s and early 50s. Majority of about 52% belonged to the age group of 14-34 years. The duration and frequency of headaches were found to correlate with the presence of mood disorders in 60% of the patients. Moreover, a higher migraine-related disability was noted in patients with comorbid mood disorders. Majority of the subjects (52%) under the study belonged to moderate levels of functional disability based on Migraine disability assessment (MIDAS).

Conclusion: The present study revealed migraine preponderance amongst younger female population leading to significant mood disorders with rising migraine-related disability. An early diagnosis and optimum treatment of these individuals can prevent these impairments and lead to a better quality of life in these individuals. Patients with migraine must be screened for mood disorders using questionnaires like the Hospital Anxiety and Depression Scale (HADS) to rule out comorbid mood disorders.
Clinical-epidemiological characteristic of COVID-19 and cancer, first year of pandemic
Authors: Sánchez Yazmín , Zepeda Diego , Munguia Ignacio , Guzmán Rafael
Published: December 2024

At the end of 2021, 3.6% of the world´s population was infected by SARS-CoV2, which was one of the main causes of death in México with a fatality rate of 7.5%, being higher than the world average (1.9%). Patients with cancer were a vulnerable group to get infected and to have the worse results; in spite of the limited information to direct oncological treatment, medical care continued in Oncology hospitals. The objective of this study was to compare the clinical-epidemiological characteristics in patients with COVID-19 to those ruled out, who were hospitalized in a Third Level Cancer Hospital.

Material and methods: A cohort of oncological cases was carried out about patients who were hospitalized within 2020-2021 with a suspected diagnosis of COVID-19 and who had a RT-PCR to rule out or to confirm the diagnosis. Data related to cancer care, respiratory symptoms, laboratory report and chest x-ray were searched in the clinical record and the cases were followed for about 30 days. Simple frequencies as well as normality tests were obtained to compare the study variables between confirmed cases and those discarded through U-Mann Whitney.

Results: A total of 208 patients in which 59-year-old was the median; 49.5% were women and 50.5% were men. Colorectal cancer was the main diagnosis (19.7%). COVID-19 was confirmed in 32.2%, with dyspnea as the most common symptom (86.6%), although chills had a significant difference when comparing this group to the discarded cases, as it did elevated DHL, and an x-ray with Score≥12. During follow-up, 46.2% of patients died from this cause.

Conclusions: Chills, elevated LDH and a chest x-ray with a high Score were the main differences presented in patients with cancer and COVID-19.
High risk of peripheral ischemia in patients on dialysis without diabetes mellitus.
Authors: Boesby Lene , Hommel Kristine , Olesen lene , Motte Louise , Wied Christian , Hansen Mork
Published: December 2024

Background: Patients on dialysis have an increased risk of peripheral arterial disease. This nationwide Danish cohort study describes the incidence of lower extremity amputation or revascularization in patients treated with dialysis and explores influence of diabetes mellitus and dialysis modality over time.

Methods: By individual-linkage between nationwide registries, risk of lower extremity amputation or revascularization was compared between two time periods and groups of patients treated with hemodialysis or peritoneal dialysis, with or without diabetes mellitus.

Results: We assessed risk of lower extremity amputation or revascularization in 75 419 patients with diabetes not on dialysis and 10 908 dialysis patients. Compared with the background population, hazard ratio for lower extremity amputation or revascularization associated with diabetes or treated with peritoneal dialysis without diabetes was equal, hazard ratio 12. Patients with diabetes on hemodialysis had hazard ratio 117(104-131) in the period 1997-2004 with lower hazard ratio in the later period, hazard ratio 68(60-77). For patients treated with hemodialysis with no diabetes, hazard ratio was not lower in the second time period; hazard ratio 15(13-18) vs hazard ratio 17(14-20). Hazard ratios of lower extremity amputation or revascularization were not significantly lower in patients with peritoneal dialysis and diabetes in the later period, hazard ratio 38(30-48) vs 30(23-37). For patients on hemodialysis with diabetes a lower hazard ratio was found in the later period. Patients without diabetes had almost the same risk of lower extremity amputation or revascularization over time. Patients on peritoneal dialysis had, compared to patients treated with hemodialysis, lower risk of lower extremity amputation or revascularization.

Conclusions: Patients on dialysis without diabetes had an equal or increased risk of lower extremity amputation or revascularization compared to patients with diabetes not on dialysis. Patients on dialysis with diabetes had higher risk compared to those without diabetes. Risk was higher in patients on hemodialysis compared to patients on peritoneal dialysis. Over time there was a trend towards decreased risk in dialysis patients with diabetes. The Danish programme for yearly evaluation of peripheral ischemia by podiatricians in patients with diabetes may be one of the reasons for the differences seen in risk reduction.
Online Shopping/Buying Disorder and Associated Sociodemographic Characteristics and Quality of Life among Female University Students in Turkey
Authors: Köksal Ebrar , Unsalver Barış , Yenel Sena
Published: December 2024

With the advent of the Internet and cheap electronic devices, people around the globe are living in a hyperconnected online world where any product is available to anyone anywhere on earth through online shopping. Accordingly, problematic online shopping behavior has been increasing worldwide. Children and young people who are born into the online technologies era are at risk for developing various behavioral addictions. Therefore, studies on the epidemiology of behavioral addictions, such as problematic online shopping behavior, are necessary for young people to develop general protective policies. In this study, online shopping tendencies and their association with satisfaction with life were examined with the online shopping addiction version (Compulsive Online Shopping Scale-COSS) of the Bergen Shopping Addiction Scale and The Satisfaction With Life Scale (SWLS) in a sample of female students (n=150) in a foundation university. Mean COSS scores were 20.11 (SD=20.88). Marital status, economic income, occupation, and credit card use did not significantly affect COSS scores. Being younger, living alone, increasing online shopping frequency, and spending longer time online increased COSS scores significantly. A weak negative correlation existed between the total COSS and SWLS scores (rs= -0,322, p<0,05).

In contrast to the increasing world population, people are becoming lonelier because of the pervasive advocacy of individualization. This might decrease satisfaction with life, resulting in more time spent online for self-stimulation. The findings will be discussed in relation to previous studies on problematic online shopping behavior.
Depression in women; perceptions do matter in the development of a community-based intervention
Authors: Indu Pillaveetil , Anilkumar Thekkethayyil , Vijayakumar Krishnapillai , Kumar K. A. , Sarma P. Sankara , Remadevi Saradamma , Andrade Chittaranjan
Published: December 2024

Depression is two times more prevalent among women; however women’s access to mental health care is poor and many do not seek care even when they are referred to a mental health professional. We conducted a qualitative study to understand the perception of key stakeholders about the burden of depression in women, its risk factors and barriers to seek care, with a view to develop a community based intervention to manage depression among women. We interviewed women with depression, their family members, community volunteers, multipurpose health workers, primary care physicians (PCPs), psychiatrists, psychologists, social scientists, public health experts, gender experts, administrators and policy makers. The 49 audio-recorded in-depth interviews and one focus group discussion were transcribed, free-listed, coded and content analysis was performed. Stakeholders perceived that burden of depression was substantial; but mostly unidentified because complaints were somatic or anxiety-related and in many situations symptoms of depression remained unvoiced. The suggestions from stakeholders were consolidated as follows; community and family level interventions should address gender issues, autonomy of women, alcohol use among partner, marital conflicts, domestic violence, financial problems, and unemployment. Partners and other family members need to share the routine household responsibilities. Primary care is an ideal setting to implement a sustainable intervention for depression management, with re-orientation and training of existing health care providers. However there were explicit differences in the perceptions of women with depression and many other stakeholders regarding who should be involved to provide psycho social interventions. Many health workers, local leaders and community volunteers suggested involving local volunteers for social support; however, women and their family members preferred the multipurpose health workers. Multipurpose health workers, who carry out home visits, as part of their routine work, were the most acceptable to women with depression. Multipurpose workers can screen for depression at the field level, refer the screened positive women to primary care physicians for diagnosis and treatment and provide psychosocial support. Primary care physicians can provide the drug treatment and supervise psychosocial intervention provided by multipurpose workers or junior public health nurses. We propose a model for community based intervention, which is more relevant for settings with limited resources in mental health care.
A Cross-Sectional Study on Factors Related to Suicidal Ideation in Individuals with Spiritist Involvement: Comparison before and during the Covid-19 Pandemic
Authors: Sales Tiago , Mota Rosa , Macena Raimunda
Published: December 2024

Purpose: Suicide increases in Brazil annually and the population search for spiritual care, as in Spiritism, a religion that attracts people in psychic pain. We sought to identify the factors associated with suicidal ideation among persons with some Level of Spiritism Engagement (LSE), before and during COVID-19.

Methods: This cross-sectional analytical research with 848 inhabitants from Ceará, Brazil, with some LSE, was conducted through digital data collection via snowball, with a bivariate (p < 0,30), multivariate (p < 0,30) and multinomial analysis (p < 0,05) of sociodemographic factors, psychic status, psychic care, spiritual belief and LSE related to suicidal ideation. Afterward, a multinomial regression analysis (p < 0.05) was conducted on all significant factors to identify those most strongly associated with suicidal ideation.

Results: Risk factors of mild/moderate suicidal ideation were to be single (OR=2,32; CI 1,19-4,52), previous psychotherapy before COVID-19 (OR=1,81; CI 1,10-2,98) and to be spiritist (OR=2,43; CI 1,34-4,38). Risk factors of severe suicidal ideation were: to be single (OR=4,05; CI 1,89-8,69), unemployed (OR=2,93; CI 1,45-5,92), have a regular/bad/worse self-perception of emotional health (OR=4,84; CI 2,55-9,17), previous psychotherapy before COVID-19 (OR=2,57; CI 1,40-4,71) and to be spiritist (OR=2,13; CI 1,00-4,52). Pre-pandemic regular/high/very high LSE was a protective factor for severe suicidal ideation during COVID-19 (OR=0,38; CI 0,16-0,90).

Conclusion: Negative self-perception of emotional health, psychotherapeutic follow-up, and identification as spiritist were associated with severe suicidal ideation, which appears to support the notion that spiritism attracts individuals experiencing psychic distress. Despite this disease profile, higher levels of spiritist engagement before the pandemic were protective against severe suicidal ideation during COVID-19, suggesting a potential positive effect of spiritism on mental health.
Increased Headache Prevalence in Patients with Neuropathic Pain
Authors: Cheng Jennifer , Heffernan Megan , Le Vi , Cheng Hsinlin
Published: December 2024

Patients with neuropathic symptoms, including neuropathic pain and autonomic symptoms, frequently have headaches. They were evaluated by neurologists and underwent a diagnostic skin biopsy for small fiber neuropathy at Massachusetts General Hospital from 2018-2020. The correlations of neuropathic pain, autonomic symptoms, and headaches were examined. The results of skin biopsy, nerve conduction velocity/electromyography, and autonomic function testing were analyzed.

Most (73.8%) of the patients who underwent a skin biopsy were females. The mean age was 46.8. Most patients had neuropathic pain (61.3%). In addition, autonomic symptoms were present in 48.0% of patients. The prevalence of headaches was 48.2% in the whole study cohort, with 73.2% of headaches fulfilling the criteria of migraine.

We detected female dominance in patients who had headaches and migraine but not in the neuropathic pain and autonomic symptom groups. The correlations between headaches, migraine, neuropathic pain, and autonomic symptoms were examined. There were statistical correlations between headaches and neuropathic pain (p< 0.0001) and autonomic symptoms (p< 0.01). Similar trends were detected for migraine with neuropathic pain but not with autonomic symptoms.

The symptomatology was analyzed with the results of skin biopsy, nerve conduction velocity/electromyography, and autonomic function testing. Only autonomic symptoms have a significant positive correlation with positive autonomic function testing results. Otherwise, the results of skin biopsy, nerve conduction velocity/electromyography, and autonomic function testing had no significant correlation with neuropathic pain, headaches, and migraine. The lack of positive correlations between peripheral neuropathy studies and headaches suggests centralized mechanisms likely mediate headaches in patients with neuropathic pain and autonomic symptoms.
Management of crown-root fracture encroaching biological width using biodentine
Authors: Belaram Kavya , Simon Elsy P , Ashik Mohammed , Raveendran Chandini , Sathyan Shikhil T
Published: December 2024

Crown root fractures of anterior teeth are complex dental injuries that present unique challenges due to the involvement of both the crown and root structures. These fractures often lead to concomitant periodontal injury, which can complicate the treatment outcome. Additionally, anterior fractures pose aesthetic and psychological concerns for the patient. Reattachment or restorative repair of fractures involving the coronal third of the root are notoriously prone to failure due to their proximity to the oral cavity leading to difficulty in isolation and bacterial contamination. Sub crestal fracture lines may also encroach the biological width complicating the management further.

This case report details the clinical presentation of a patient with an anterior crown root fracture with the fracture line extending below the alveolar crest and was managed non-conventionally using Biodentine.
Management of maxillary second molars with a single root and a single canal: A case series
Authors: Neela Shiva Tarun , Mathew Anjana Aleys , Sivakumar Murali
Published: December 2024

A comprehensive understanding of root canal variations is crucial for ensuring predictable results in endodontic treatment. The root and root canal anatomy of maxillary first molars can vary significantly. Although the literature reports many cases of maxillary second molars with multiple roots and canals, those with a single root canal are uncommon. Clinicians need to recognize these variations, as overlooking them may lead to unnecessary loss of tooth structure in the pursuit of additional canals. This case series discusses two cases of diagnosing and treating maxillary second molars with a single root and canal.
Dietary antioxidants: An overview
Authors: Lalita A  , Oviya Nilaa M K
Published: December 2024

The substances which inhibit oxidation are called as antioxidants. They are also known as free radical scavengers. The decrease in concentration of antioxidant is termed as oxidative stress. The presence of antioxidants decreases the risk of inflammation, liver disease, cardiovascular, cataract, nephrotoxicity and neurodegenerative diseases. They are categorized as exogenous and endogenous. Endogenous antioxidants include enzymatic and non-enzymatic. Enzymatic antioxidants are glutathione peroxidase, superoxide dismutase and catalase whereas non-enzymatic are uric acid, metanonin lipoic acid, glutathione and bilirubin. Exogenous are carotenoids, Vitamin E, A, C and flavonoids. Apart from natural antioxidants, synthetic antioxidants such as octyl gallate, butylated hydroxyanisole, propyl gallate, hydroxytoluene and tertbutylhydroquinone are used to enhance flavor, color extending shelf life of the product. This paper discusses on the various role of antioxidants.
Etno☰hauntología. Espectros de la imagen y territorios aurales
Authors: Terán Vargas Carlos X. , Ramirez Rafael , Ponce de León Oderay
Published: December 2024

El siguiente texto es un ejercicio de especulación ficcional que toma como base la teoría de la hauntología desarrollada por Jacques Derrida, Mark Fisher y Kathy Shaw y las ideas de Tarek Elhaik y X. Andrade alrededor del imagework o trabajo de campo sobre la imagen. A partir de una estructura de cuaderno de rodaje, que esconde las huellas, las pistas y las supervivencias de una película, se hace una aproximación a los conceptos de etno hauntología, espec- troglifo y auralwork. Estos principios son la base estructural que define la línea investigativa y de creación del colectivo, y se han aplicado en proyectos instalativos, de investigación y curatoriales.
Snow Drogas «¡Es tu decisión!»
Authors: Rueda Fajardo Santiago
Published: December 2024

Este artículo explora Snow Drogas (1998-2021) de Fabián Montenegro, un proyecto centra- do en la despenalización, regulación y comercialización de la cocaína. Presentado como una marca registrada y una campaña artística, ofrecía productos como empaques de dosis personales. La obra de Montenegro, desarrollada más de una década antes de los debates regulatorios serios, combinó arte, activismo y marketing, utilizando referencias culturales y cinematográficas para desafiar las convenciones del arte en América Latina.
Mariátegui y el modernismo andino (Una conversación)
Authors: Aramburu Iosu , Mitrovic Mijail
Published: December 2024

Conversación entre el artista Iosu Aramburu y el antropólogo Mijail Mitrovic sobre la rela- ción entre el pensamiento de José Carlos Mariátegui y el desarrollo del modernismo andino entre las décadas de 1920 y 1970, principalmente en el Perú, en contrapunto con reflexio- nes sobre la obra reciente de Aramburu.