bluuebunny/crossref_metadata_2025_split huggingface dataset:
STUDI AWAL UJI PERANGKAT KAMERA GAMMA DUAL HEAD MODEL PENCITRAAN PLANAR STATIK MENGGUNAKAN SUMBER RADIASI HIGH ENERGY IODIUM-131 (I131)
Authors: Ramadayani Rima , Milvita Dian , Nazir Fadil 
Published: February 2025

ABSTRAKTelah dilakukan studi awal uji perangkat kamera gamma dual head model pencitraan planar statik menggunakan sumber radiasi high energy Iodium-131 (I131) di PTKMR BATAN, Jakarta Selatan.Â Pada penelitian dilakukan pengujian perangkat untuk mengetahui akumulasi sumber radiasi menggunakan teknik ROI (Region of Interest) dan model yang digunakan planar statik.Â Variabel penelitian yang digunakan adalah phantom (phantom linier dan phantom BAR) variasi jarak 5 cm, 10 cm dan 15 cm selama 5 menit dan data diolah menggunakan Statistica 6.0. Untuk variasi jarak didapatkan hasil laju cacahan tanpa kolimator lebih tinggi dibandingkan menggunakan kolimator, sedangkan laju cacahan menggunakan phantom BAR lebih tinggi dibandingkan phantom linier. Hasil semua cuplikan untuk pengujian perangkat kamera gamma tidak jauh berbeda karena akumulasi sumber radiasi tersebar merata.Kata kunci : Iodium-131, Jarak, Kamera Gamma Dual Head, Kolimator HEGP, Phantom, Planar Statik.AbstractThe research conducted a preliminary study testing dual head gamma camera device models static planar imaging using high energy radiation sources Iodine-131 (I131) in PTKMR BATAN, South Jakarta. In research conducted testing device to determine the accumulation of radiation sources using techniques ROI (Region of Interest) and the models used planar static. The variables used in this study is the phantom (phantom linear and phantom BAR) variation distance of 5 cm, 10 cm and 15 cm for 5 minutes and the data processed using Statistica 6.0. For distance variation of counts rate showed no higher than using a collimator collimator, whereas the rate of shredded using phantomÂ BAR higher than phantom linear. The results of all samples for testing gamma camera device is not much different because of the accumulation of radiation sources spread evenly.Keyword : Iodium-131, Distance, Camera Gamma Dual Head, HEGP Collimator, Phantom, Planar
PENGARUH PROSES OKSIDASI PADA LOGAM PADUAN ZR-2,5NB UNTUK MATERIAL BIOIMPLAN
Authors: Nastiti Gemi , Handani Sri , Bandriyana B 
Published: February 2025

ABSTRAKPenelitian tentang pengaruh proses oksidasi pada logam paduan Zr-2,5Nb untuk material bioimplan telah dilakukan. Penelitian ini bertujuan untuk mengetahui stuktur mikro, kekerasan, ketahanan korosi dan toksisitas paduan logam Zr-2,5Nb sebelum dan sesudah dioksidasi. Pengujian stuktur mikro dengan mikroskop optik memperlihatkan paduan homogen berbentuk equiaxial. Proses oksidasi dilakukan menggunakan alat MSB selama 5 jam dengan variasi suhu 500ÂºC, 600ÂºC dan 700ÂºC. Pada oksidasi suhu 500Â°C tebal lapisan oksidaÂ berkisar antara 4,06 â€“ 5,02 Âµm, pada suhu 600Â°C tebal lapisan antara 4,20 â€“ 7,80 Âµm danpada suhu 700Â°C tebal lapisan oksida 19,00 â€“ 23,60 Âµm. Sebelum oksidasi kekerasan sebesar 233,7 VHN. Pada logam setelah dioksidasi 500Â°C kekerasan rata-rata sebesar 242,4 VHN. Pada oksidasi 600Â°C kekerasan sebesar 261,2 VHN dan 700Â°C kekerasan sebesar 399,1 VHN. Nilai laju korosi sebelum oksidasi sebesar 0,0695 mpy. Setelah proses oksidasi nilai korosi sampel jauh lebih rendah yaitu sebesar 0,0094 mpy. Persentasi inhibisi paduan sebelum oksidasi sebesar 13,3 % dan setelah oksidasi memiliki persentasi inhibisi sebesar 0 %, yang sangat baikÂ dimanfaatkan sebagai material bioimplan.Kata kunci : paduan zirkonium, oksidasi MSB, kekerasan, korosi, metode in vitro, bioimplanAbstractResearch on the effect of oxidation on the metal alloy Zr-2,5Nb for bioimplant material has been done. This research aims to find out the micro structure, hardness, corrosion resistance and toxicity of metal alloys Zr-2,5Nb before and after being oxidized. The micro structure tested by optical microscopy show a homogeneous alloy shaped equiaxial. The oxidation process is done using a MSB for 5 hours with temperature variations of 500ÂºC, 600ÂºC and 700ÂºC. Oxide layer thickness was measured by using SEM. At the oxidation temperature of 500Â°C the oxide layer thickness ranged from 4,06 to 5,02 Âµm, at a temperature of 600Â°C layer thickness between 4,20 and 7,80 Âµm and at temperature of 700Â°C the oxide layer thickness from 19,00 to 23,60 Âµm. Alloy hardness before oxidation Â is 233,7 VHN, whereafter oxidized of 500 Â°C the average of metal hardness is 242,4 VHN. At 600Â°C oxidation the hardness is 261,2 VHN and 700Â°C is 399,1 VHN. Corrosion rate value before oxidation is 0,0695 mpy. After the oxidation process the corrosion rate value is much lower than before oxidation and equal to 0,0094 mpy. This is due to the presence of oxygen contained in the oxide layer. The percentage inhibition of oxidation of the alloy before oxidation is 13.3% and after oxidation is 0%, which is well used as material bioimplant.Keywords : zirconium alloys, oxidation MSB, hardness, corrosion, in vitro methods, bioimplant
ANALISIS PENGARUH EL NINO SOUTHERN OSCILATION (ENSO) TERHADAP CURAH HUJAN DI KOTO TABANG SUMATERA BARAT
Authors: Vitri Triana , - Marzuki 
Published: February 2025

ABSTRAKCurah hujan merupakan parameter yang tingkat variabilitasnya tinggi terhadap lokasi maupun waktu yang disebabkan oleh faktor lokal maupun global. Di dalam tugas akhir ini diteliti pengaruh El Nino Southern Oscillation (ENSO) terhadap curah hujan di Koto Tabang, Sumatera Barat tahun 2002-2012 yang terekam oleh Optical Rain Gauge (ORG). Pengaruh ENSO terlihat jelas dari hujan bulanan yang menyebabkan dua puncak hujan yaitu pada Oktober-November dan Maret-Mei. Lebih dari 70% total curah hujan yang terjadi di Koto Tabang berasal dari hujan jam 12-24 dengan puncak pada jam 16-17 WIB. Secara keseluruhan nilai intensitas curah hujan dari hasil pengamatan untuk persentase <0,01% lebih kecil dari rekomendasi ITU-R. Kesesuaian antara hasil pengamatan dan rekomendasi ITU-R hanya terlihat pada fasa La Nina kuat. Untuk fasa El Nino, perbedaan intensitas curah hujan hasil pengamatan dengan rekomendasi ITU-R menjadi lebih besar untuk persentase <1%.Kata kunci : El Nino Southern Oscilation (ENSO), Optical Rain Gauge (ORG), Â ITU-RAbstractRainfall has strong variability both spatial and temporal which is due to local and global factors. This thesis is devoted to investigate the impact of El Nino Southern Oscillation (ENSO) on the rainfall at Koto Tabang, West Sumatera using data 2002-2012 recorded by an Optical Rain Gauge (ORG). The effect of ENSO on Koto Tabang rainfall can be observed clearly from monthly data in which ENSO generates two peaks of rainfall, i.e., October-November and March-May. Approximately 70% of the rainfall amount comes from 12-24 local time with a peak around 16-17. In general, the cumulative distribution of measured rain rates at small time percentages (<0,01%)Â is smaller than that obtained from the ITU-R model. A fairly good agreement between measurement and ITU-R model was observed during strong La Nina phase. Significant differences between the recorded data and the ITU-R model are seen during El Nino phase.Keywords : El Nino Southern Oscilation (ENSO), Optical Rain Gauge (ORG), ITU-R
PENGARUH KONSENTRASI INHIBITOR EKSTRAK DAUN KAKAO (Theobroma cacao) TERHADAP LAJU KOROSI BAJA HARDOX 450
Authors: Malfinora Anike , Handani Sri , Yetri Yuli 
Published: February 2025

ABSTRAKTelah dilakukan serangkaian uji korosi dan analisis struktur mikro terhadap baja Hardox 450.Â Penelitian ini dilakukan dengan menggunakan medium korosif H2SO4 3% dan Na2SO4 3%.Â Metode yang digunakan adalah metode weight loss untuk pengukuran laju korosi dan metode potensiodinamik untuk melihat nilai arus korosi beserta potensial korosi.Â Baja direndam di dalam medium korosif dengan penambahan dan tanpa penambahan inhibitor.Â Variasi konsentrasi inhibitor yang digunakan adalah dari 1% hingga 10% dengan lama perendaman lima hari.Â Hasil penelitian menunjukkan bahwa dari variasi konsentrasi yang diberikan laju korosi terbesar terjadi pada baja tanpa penambahan inhibitor, sedangkan laju korosi berkurang dengan penambahan inhibitor, terlihat dari kurva Tafel yang menunjukkan penurunan Ikorosi.Â Semakin besar konsentrasi inhibitor yang ditambahkan maka nilai laju korosi akan semakin menurun dan nilai efisiensi inhibisi korosi semakin tinggi.Â Nilai efisiensi terbesar didapatkan pada penambahan konsentrasi inhibitor 10%, untuk medium korosif H2SO4 mencapai 63,89% dan untuk medium Na2SO4 mencapai 56,61%.Â Hal ini menunjukkan bahwa inhibitor ekstrak daun kakao efisien dalam mengendalikan laju korosi dalam medium H2SO4 dan Na2SO4.Â Dari analisis foto optik morfologi permukaan baja Hardox 450 memperlihatkan permukaan baja dengan penambahan ekstrak daun kakao mengalami korosi lebih sedikit.Kata kunci : laju korosi, inhibitor, efisiensi, weight loss, potensiodinamikAbstractThe corrosion test and microstructure analysis of Hardox 450 steel have been done.Â This research was performed using H2SO4 3% and Na2SO4 3% corrosive mediums.Â The method used were weight loss for measuring the corrosion rate and potentiodynamic method to see the value of corrosion current and corrosion potential.Â Steel immersed in the corrosive medium with the addition and without addition of inhibitors.Â Concentration variation of inhibitor used was from 1% to 10% with five days immersion time.Â The result based from concentration variation was used showed that the corrosion rate occured in the steel without the addition of inhibitors, whereas the corrosion rate decreases with the addition of inhibitors, by the Tafel curves showed a decreases Icor.Â The greater concentration of the inhibitor is added then the value of corrosion rate will lower and corrosion inhibition efficiency will increase.Â Greatest efficiency values both for medium corrosive obtained at inhibitor concentration 10%, 63,89% in H2SO4 and 56,61% in Na2SO4.Â It shows that the cocoa leaf extract inhibitor is efficient in controlling corrotion rate in H2SO4 and Na2SO4 medium corrosive.Â From the optical photograph analysed on the surface morphology of Hardox 450 steel showed that the addition of cocoa leaves extract suffered less corrosion.Keywords: corrosion rate, inhibitor, efficiency, weight loss, potentiodynamic
A Prospective Analysis of Assault Patients at a Tertiary Care Centre
Authors: Khan Najeba , Sangamesh B.T , H.M Abhijith 
Published: February 2025

Objectives
Assault is a leading cause of morbidity and mortality among young adults, resulting in the loss of productive lives. Violence affects the victim psychologically and financially. The economic cost includes not only missed wages and productivity but also expenses for medical care and legal counsel. The purpose of this study was to evaluate the assault cases critically.

Material and Methods
A prospective observational analytical study was conducted in a tertiary care medical college hospital between December 2022 and November 2023. All the eligible subjects of the data period were employed to recruit the study subject from the surgical department. A semi-structured questionnaire was used to collect the socio-demographic details and clinical details and a thorough medical examination was done for all study subjects.

Results
A total of 281 study subjects were recruited into the study. Which majority was females (65.1%), and agriculture (48%) was the major occupation among the study subjects. The mean age of the study subjects was 28 ± 5.6 years. Most of the injuries were simple types of injuries (81.8%), and the most common weapon used was a non-metallic substance (54.4%). The time when the assault happened, and the type of weapon used were significantly associated with the type of injuries caused.

Conclusion
It is recommended that educational initiatives and psycho-social counselling be used to reduce the incidence of violence, especially among young adults.
Motor cortex stimulation for phantom limb pain treatment
Authors: Fagundes Walter , Lobo Kaike , Rajab Numa , Reyns Nicolas , Laureau Emmanuelle , Blond Serge 
Published: February 2025

Background:
Phantom limb pain (PLP) is a chronic neuropathic pain syndrome experienced by individuals following limb amputation. Despite the use of various pharmacological treatments, including opioids, antidepressants, and anticonvulsants, effective pain relief remains challenging for many patients. Motor cortex stimulation (MCS) has emerged as a promising alternative for managing PLP.

Methods:
We present the management of three patients with chronic, refractory PLP who underwent epidural MCS at Lille University Hospital Center. The quadripolar electrode lead was implanted into the epidural space under local anesthesia. Stereotactic angiography was used to determine the target coordinates, and the optimal location was confirmed with the guidance of a three-dimensional brain magnetic resonance imaging reconstruction and neurophysiological testing. Pain intensity was assessed using the Visual Analog Scale (VAS) at baseline and at the end of the follow-up period, which had a mean duration of 7 ± 2.16 months.

Results:
Two of the three patients experienced a decrease in pain by 50%, and one had a 44.4% reduction. The average preoperative VAS score significantly decreased from 7.0 ± 1.73 to 3.67 ± 1.15 at the final follow-up (P = 0.00985). All patients reported a reduction in analgesic medication intake, and no major complications occurred.

Conclusion:
PLP is one of the most challenging conditions to treat. MCS is an adjustable and reversible technique that appears to be effective in treating patients with this chronic pain syndrome refractory to other treatment modalities.
Neuroschistosomiasis presenting as recurrent seizures: A case report
Authors: Bansal Anushree , Albano Joselv Eullaran , Jayakumar Dheeraj 
Published: February 2025

Background:
Cerebral pseudotumoral schistosomiasis is an uncommon and underreported condition, posing significant diagnostic challenges due to its ability to mimic other neurological conditions, especially in patients presenting with persistent seizures and imaging findings indicative of an infectious etiology.

Case Description:
We report the case of a 16-year-old male who presented with persistent headaches and recurrent seizures despite adherence to antiseizure medications. Neuroimaging findings suggested an infectious process but were inconclusive in differentiating between a tuberculoma and cerebral schistosomiasis. Given the differing therapeutic approaches required for these conditions, a definitive diagnosis was pursued through a brain tissue biopsy, which confirmed cerebral schistosomiasis. This diagnosis guided appropriate treatment, leading to clinical improvement.

Conclusion:
This case highlights the critical role of biopsy in establishing a definitive diagnosis when imaging results are inconclusive and suggests the importance of exploring the use of adjunct diagnostic methods like magnetic resonance spectroscopy, hence decreasing or potentially eliminating the need for an open biopsy.
ПРИМЕНЕНИЕ АЛГОРИТМА ЛЕВЕНБЕРГА–МАРКВАРДТА ДЛЯ РЕШЕНИЯ ЗАДАЧ СОВМЕЩЕНИЯ ИЗОБРАЖЕНИЙ
Authors: Роженцов А.А. , Баев А.А. , Ахмеров А.В. 
Published: February 2025

На основе алгоритма ЛевенбергаМарквардта решены задачи совмещения трёхмерных точечных полей. Рассмотрены особенности реализации алгоритма с учётом требуемых преобразований систем координат в трёхмерном пространстве. Представлены примеры совмещения изображений.
Introduction. A lot of applications that deal with processing 3D images requires solving the problem of superimposing 3D point clouds to detect, recognize, estimate the parameters of 3D objects. For instance, such applications include navigation systems, medical systems associated with the reconstruction of fragments of damaged organs, augmented reality systems and so on. Currently, there are a number of approaches to superimposing 3D point clouds. For this reason, the aim of the research is to solve the problem of developing a universal algorithm for superimposing 3D point clouds that does not require the use of timeconsuming procedures for preliminary data processing. Studies focused on solving the problem with the use of the LevenbergMarquardt algorithm. Results. The paper discusses the features of the implementation of the LevenbergMarquardt algorithm for solving the image superimposing problems. We proposed a modification of the algorithm for superimposing 3D point clouds based on the transformation of coordinate systems for experimental images. The efficiency of the algorithm was experimentally verified. There is also presented a possibility of superimposing 3D unordered point clouds with a different number of samples for signaltonoise ratio over 6.
МОДЕЛЬ ПРОСТРАНСТВА СОСТОЯНИЙ ПРОФЕССИОНАЛЬНОЙ ПРИГОДНОСТИ ОПЕРАТОРА
Authors: Стешина Л.А. , Глазырин А.Е. , Петухов И.В. 
Published: February 2025

Предложенная модель пространства состояний профессиональной пригодности оператора позволяет в общем виде спрогнозировать эффективность эргатической системы управления через метрики эффективности оператора, состоящие из нечётких множеств. Модель может быть использована в качестве предопределённого вектора параметров состояния оператора для формирования обратной связи при реализации обучающих систем с индивидуализацией трека обучения. Полученные результаты открывают перспективы в части интеллектуализации сложных компьютерных интерактивных систем, позволяют расширить теоретические представления в области человекомашинного взаимодействия. Данная работа может представлять интерес для специалистов в области человекомашинного взаимодействия, эргатических систем управления и обучающих и тренажёрных систем.
The necessity of intensification of training through the individual learning scenario rose the urgency of the research. The current approach to developing static scenarios or professional training doesnt consider individual psychophysiological features that may have both temporal manifestation and depend on the operator competence. The aim of the research is to develop a model of a dynamic learning environment space for operator professional training. Findings. It was shown that the individualization of training can be achieved through the feedback from the learning environment. In other words, through the effectiveness of individual operator actions or analysis of the current professional level of the operator. We proposed to develop an individual training track through the adaptability of the learning environment, which can affect individual professional qualities and foster a point impact on the certain levels of training and mastering professional technological actions that are currently topical. The input parameter is the operators performance in the learning environment, and the output parameter is the environment response to the operators actions, that allows to implement a feedback loop. Input and output parameters can be expressed in terms of fuzzy variables due to the inaccuracy in the description of the learning environment and operator performance indicators. The fuzzy condition in this case satisfies the following limitation: a change in the performance of operator actions will be reflected in the reaction of the learning environment through the intensity of the operator work. Conclusions. The research outcomes open new perspectives in the intellectualization of complex computer interactive systems and allow to broaden theoretical concepts in the manmachine interaction. This work seems rather promising to the experts in manmachine interaction, ergatic control systems and training systems.
МОДЕЛИРОВАНИЕ КЛЕТОЧНОГО АВТОМАТА
Authors: Гончаровский О.В. , Тюрин С.Ф. 
Published: February 2025

Рассмотрены вопросы моделирования клеточных автоматов. Предложен режим масштабирования функций переходов. Разработана программа на языке СИ с настройкой функций. Выполнено тестирование для автоматов, размерность таблицы переходов которых равна 64*64. Рассмотрены примеры реализации функций переходов для одномерного и двумерного автоматов.
Paper addresses to the studies of cellular automata proposed in the 40s of the XX century, literally immediately after the formation of the scientific direction “Automata” in the 30s. It was a kind of “multi-dimensional” extension of the “point” model of a finite automaton. The extension of combinatorial structures can be considered as an alternative that led to the development of block diagrams (block design), moreover, the automaton is also a combinatorial structure in some way, but rather dynamic than static, like block diagrams. The mathematical model of the cellular automaton turned out to be in demand for describing the interaction of neurons in the neural network, which can also be considered as an extension of the cellular automaton, where training mode is introduced. That is actually a double dynamic (interaction + training), which has been successfully applied in recent years in the field of machine learning. Another cutting-edge area is quantum computing. It turned out that the quantum computing model based on cellular automaton has no alternative at the nano-level. Therefore, the modeling of cellular automata is topical. The aim of the research. Development and testing of a program for modeling cellular automata. Methods. Theory of finite automata, software implementation of automata with the use of C programming. Results. A program that implements cellular automata with the possibility of changing the transition functions was developed with the use of C programming language. There are presented the examples of the functioning of a one-dimensional and two-dimensional automaton. The developed program can be used for research into the cellular automata as well as in the educational process.