bluuebunny/crossref_metadata_2025_split huggingface dataset:
On refinements of the asymptotics expansion of the continuation of critical branching random processes
Authors: Жураев Ш.Ю. 
Published: December 2021

В настоящей работе для вероятности продолжения критических ветвящихся случайных процессов получено асимптотическое разложение в предположении о существовании факториальных моментов λk при k = 5, 6, . . . , m, m < ∞.
In this paper, an asymptotic expansion is obtained for the probability of continuation of critical branching processes under the assumptions of the existence of factorial moments λk at k = 5, 6, . . . , m, m < ∞.
On the solvability of some operators with several moved and fixed
Authors: Одинабеков Д.М. 
Published: December 2021

В работе рассматриваются двумерные сингулярные интегральные операторы по ограниченной области с коэффициентами при интегралах, содержащими в нескольких точках существенный разрыв и операторы с ядрами, имеющими в нескольких точках фиксированные особенности типа однородных функций порядка -2. Такие операторы широко применяются при изучении различных краевых задач для эллиптических систем уравнений первого и второго порядка с сингулярными коэффициентами на плоскости (см. напр. [1]-[4]). Одно из таких приложений приведено в конце настоящей работы. Сначала излагаются результаты исследования разрешимости (нетеровости) двумерного сингулярного интегрального уравнения с коэффициентом при интеграле, содержащим в одной точке существенный разрыв.
In this paper we consider two-dimensional singular operators over a bounded domain with coefficients of the integrals, containing an essential discontinuity at several points and operators with kernels having fixed singularities at several points of the type of homogeneous functions order -2. Such operators are widely used in various boundary value problems for elliptic systems of equations of the first and second order with singular coefficients on the plane (see eg. [1]-[4]). One such application is given at the end of this work. First of all set out the results of studying the solvability (Noethericity) of a two-dimensional singular integral equation with a coefficient of the integral containing an essential discontinuity at one point.
Mathematical and algorithmic models of reconfiguration of a modular robotic system
Authors: Павлюк Н.А. 
Published: December 2021

Обоснована актуальность научной проблемы разработки алгоритмических моделей и программных средств автономного соединения и взаимодействия модульных гомогенных роботов. Представлен обзор существующих модульных робототехнических устройств и модульных робототехнических систем. Рассмотрены разработанные концептуальная и теоретико-множественная модели модульной робототехнической системы. Описаны алгоритмы физического соединения и информационного взаимодействия гомогенных модульных робототехнических устройств при построении связанных пространственных структур.
The relevance of a research problem is justified, which consists in development of the algorithmic models and software components for autonomous connection and interaction of the modular homogeneous robots. A review of existing modular robotic devices and modular robotic systems is presented. Developed conceptual and set-theoretic models of a modular robotic system are considered. Algorithms of physical connection and data exchange of homogeneous modular robotic devices are described in context of composition of coupled spatial structures.
Features of the software complex architecture for collecting, processing and analysis of data in the Tomsk observatory of radioactivity and ionizing radiation
Authors: Яковлев Г.А. 
Published: December 2021

В данной работе рассматривается планирование и реализация архитектуры программного комплекса для обеспечения оптимальной работы информационной системы физической обсерватории. Также описываются основные моменты, касающиеся выбора ключевых компонент комплекса, и их преимущества. Показан пример работы программного комплекса и его компонент, и сделаны выводы об архитектурных решениях и их полезность в прикладных задачах информатики по организации работы информационных систем обработки и хранения данных.
This paper considers the planning and implementation of the architecture of the software package to ensure the optimal operation of the information system of the physical observatory. It also describes the main points regarding the choice of key components of the complex, and their advantages. An example of the operation of the software complex and its components is shown, and conclusions are drawn about architectural solutions and their usefulness in applied problems of informatics for organizing the work of information systems for processing and storing data
Experience of working with the MTU-5 magnetotelluric complex for studying the deep structure of the Shanuch and Aginsky deposits in Kamchatka
Authors: Джигимон В.А. , Улыбышев И.С. 
Published: December 2021

Данная статья описывает методологию проведения полевых исследований, процесс обработки магнитотеллурических данных и особенности работы с аппаратным комплексом MTU-5.
This article describes the methodology for conducting field research, the process of processing magnetotelluric data and the features of working with the MTU-5 hardware complex.
Caracterización de la materia prima para la elaboración de un material de construcción, utilizando diatomita y Residuos de Construcción y Demolición (RCD)
Authors: Serralde-Lealba Juan Rubén , Hernández-Ávila Juan , Cerecedo-Sáenz Eduardo , Rosales-Ibáñez Raúl , Salinas-Rodríguez Eleazar , Barrientos-Hernández F. Raúl 
Published: December 2021

Se caracterizó los Residuos de Construcción y Demolición (RCD), para determinar un uso alternativo de este material en la elaboración de bloques de pumicita. A partir de la utilización de RCD y diatomita para mejorar sus propiedades mecánicas. Los resultados obtenidos señalaron que estos RCD están compuestos principalmente de aluminio, silicatos y carbonatos, como fases mayoritarias. Se utilizó para producir materiales de construcción (bloques) con propiedades de resistencia bastante similares o incluso superiores a los presentados por materiales comerciales. Las propiedades más importantes encontradas con el uso de diatomita y de RCD en la incorporación de bloques de pumicita están relacionadas con valores como resistencia a la compresión, mostrando resultados que varían de 22 a 24.4 kg/cm2, superiores a los comerciales que presentan una resistencia de 20 kg/cm2, teniendo un aumento del 20%, aunado a la disminución en la cantidad de cemento al usar diatomita en concretos, ahorrándose 2 bultos ( 100 Kg) por cada 20 bultos (1 Ton) de cemento y cuya mejora genera aumentos a la resistencia a edades tempranas, llegando al 90% de resistencia a la compresión en 10 días.
Obtención de membrana de grafeno a partir de Shewanella oneidensis
Authors: Pérez-Torres Lisouli , Ballesteros-Almanza María de Lourdes , Carbajal-De la Torre Georgina 
Published: December 2021

En las últimas décadas la crisis del agua potable ha incrementado en México, la mayor cantidad de agua en el planeta es salina, un método para la desalinización es la osmosis inversa, donde se utiliza una membrana la cual es costosa y tiene una corta vida útil por el tipo de material que está hecha. El grafeno es un material derivado del carbono, con estructura 2D, ofrece la posibilidad de fabricar una nueva membrana mediante superposición de nano-láminas. La producción de grafeno genera vapores altamente tóxicos. Esta investigación tiene como objetivo “Obtener una membrana de grafeno a partir de Shewanella oneidensis para la desalinización de agua”. Metodología. 1. Síntesis de grafeno por el método Hummers modificado. 2. Incubación la bacteria S. oneidensis. 3. Reducción de OG, mediante S.oneidensis. 4. Obtención de una membrana para la desalinización por osmosis inversa. El material obtenido se caracterizó por IR, XDR y SEM para su identificación.
Preparación y caracterización de películas fotoluminiscentes de PVA dopadas con complejos metal-orgánicos de Eu3+
Authors: Garcia-Rosales Roberto , Ruiz-Guerrero María del Rosario , Garrido-Hernández Aristeo 
Published: December 2021

El presente trabajo se centra en la caracterización de una matriz polimérica de alcohol polivinílico (PVA), preparada a partir de la dispersión de un complejo mononuclear organometálico a base de europio trivalente, Eu3+. Los complejos de Eu3+ se sintetizaron previamente en medio acuoso a condiciones ambientales empleando aniones benzoato como ligandos orgánicos, que sigue a la formula Eu(OOCC6H5)3· (H2O)3 (Para fines prácticos la identificaremos como EuL3. Una vez caracterizado el complejo obtenido en forma de polvo, se dispersó mediante ultrasonido en la matriz de PVA. Se prepararon y caracterizaron películas con diferentes proporciones molares del complejo en relación con el polímero huésped. Las películas de 0.5 mm de espesor fueron obtenidas mediante la técnica “Tape-casting“. Las caracterizaciones que se realizaron mediante la técnica FT-IR y espectroscopia de fluorescencia. La matriz de PVA genera una sensibilización en la excitación del complejo EuL3 presentando un desplazamiento en el espectro de excitación de 288 a 280 nm; además, se observó un aumento en la emisión luminiscente debido a procesos de transferencia de energía intra o intermolecular de la matriz hacia los núcleos activos de europio.
Development of techno-pedagogy approach learning model to improve digital literation of UPN "Veteran" Jawa Timur’s students
Authors: Sholihatin Endang , Swasti Ika Korika , Sukirmiyadi S , Hayati Kinanti Resmi 
Published: December 2021

The study objectives were 1) to describe the level of digital literacy of UPN "Veteran" Jawa Timur's students; and 2) Developing a techno-pedagogy approach to improve digital literacy of UPN "Veteran" Jawa Timur's students. This research innovation is developing of a techno-pedagogy approach model and arranging a techno-pedagogy approach to improve students' digital literacy. This innovation is based on the idea of a pedagogical model which is an important aspect in achieving learning goals in the world of education. In the first study objective, quantitative methods are used, the second research objective uses qualitative methods. Research location at UPN "Veteran" Jawa Timur. This option is to provide insight, knowledge, and solutions to integrated pedagogical problems in learning amid the Covid-19 pandemic. Data were collected from questionnaires and in-depth interviews. Among the data needed are online skills; motivation; online video/audio; internet discussion; supporting elements; ict abilities; blended learning models; teaching contents; frequencies of face-to-face meeting; regulation; culture.
EDUKASI STANDARDISASI MUTU PRODUK BAGI PELAKU UMKM PADA MASA NEW NORMAL COVID 19 DI DESA PADDINGING, KABUPATEN TAKALAR
Authors: Karim Kasnaeny , Suriyati Suriyati , Ramlawati Ramlawati 
Published: December 2021

Pemasaran produk masih menjadi kendala bagi pelaku Usaha Mikro Kecil dan Menengah yang ada di Sulawesi Selatan, khususnya di desa Paddinging, Takalar. Kegiatan produksi pada desa ini masih dilakukan secara rumahan dan belum memiliki pengetahuan terkait kemampuan menciptakan produk yang bermutu sesuai standar nasional, sebagai salah satu cara dalam memperluas pasar secara nasional dan internasional. Standardisasi memiliki peran penting dan strategis, serta teramat diperlukan dalam meningkatkan daya saing dan pertumbuhan ekonomi daerah dan nasional. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pengetahuan masyarakat mengenai cara menghasilkan produk yang bermutu dengan memperhatikan permintaan pasar secara global, yang mengharuskan adanya produk yang berstandar Nasional Indonesia (SNI). Metode kegiatan dilakukan melalui ceramah dan diskusi serta memperlihatkan contoh-contoh produk yang telah memiliki label SNI. Hasil dari edukasi yang dilakukan memperlihatkan bahwa berdasarkan hasil diskusi dan tanya jawab saat kegiatan dapat disimpulkan yakni pelaku UMKM di desa Paddinging, Kabupaten Takalar mulai memahami keuntungan bagi pengusaha jika menciptakan produk yang sesuai standar mutu, peserta sudah memahami proses dalam memproduksi produk yang sesuai standar meski dalam tahap yang masih sederhana yang dimulai dari proses pencatatan mengenai apa yang akan dilakukan, serta melakukan apa yang telah dituliskan. Peningkatan pengetahuan peserta terlihat dari kemampuannya ketika diminta mengulang kembali apa yang telah diajarkan. Agar edukasi ini dapat berlanjut ke banyak orang, maka pengabdi mengharapkan pemerintah setempat dapat memberikan pendampingan lanjutan, agar mamahami proses mendapatkan sertifikat SNI.
Incidence, treatments, and outcomes of SARS-CoV-2 and HIV co-infections
Authors: Chaturvedi Rini , Malhotra Sumit , Sharma Amit 
Published: December 2021

Background We investigated the global threat of co-infection of severe acute respiratory coronavirus 2 (SARS-CoV-2) to patients living with another prevalent viral infection HIV. We have analyzed symptom status, treatment, and outcome of co-infected individuals. Methods An extensive literature search of PubMed, preprint databases (bioRxiv, medRxiv, and preprints), and ClinicalTrials.gov was conducted from 1 December 2019 to 28 February 2021. Ninety-two potential studies involving 39,461 HIV and SARS-CoV-2 co-infected patients were analyzed with details of severity, their treatment, and the outcomes. Results A total of 39,461 cases of people living with HIV have reported co-infection with SARS-CoV-2 worldwide. Of these coinfected individuals, the symptom status for 3,213 patients (~8%) was available, out of which 44% were severely/critically ill. The collated data show the fatality rate for human immunodeficiency virus (HIV) and SARS-CoV-2 coinfection to be 2.4% and a large proportion was found to have several comorbidities. The most commonly administered antiretroviral therapy to the people living with HIV was tenofovir/emtricitabine; these drugs are already in phase 3 clinical trials for coronavirus disease 2019 (COVID-19). We observed that majority of co-infected patients who survived were those on tenofovir/emtricitabine combination drug therapy for HIV. Conclusions The current study demonstrates that patients with HIV may have worse outcomes due to COVID-19 than the general population. However, the HIV/SARS-CoV-2 coinfection needs to be analyzed across multiple countries with a high burden of HIV, and with a much larger cohort to gain a better understanding of the impact of SARS-CoV-2 on people living with HIV.
ПОРІВНЯЛЬНА ХАРАКТЕРИСТИКА ЕФЕКТИВНОСТІ ЕЛЕКТРОХІМІЧНИХ МЕТОДІВ ДОСЛІДЖЕННЯ ВМІСТУ ВАЖКИХ МЕТАЛІВ У СТІЧНИХ ВОДАХ
Authors: Кислова О. В. 
Published: December 2021

Сompare the various modern electrochemical research methods effectiveness used to determine the heavy metals concentration in waste water, based on the literature data. Methodology. Analysis of literature data on the possibilities, advantages and disadvantages of voltammetric, potentiometric, coulometric and conductometric methods for the heavy metals content studying in waste water. Findings. The electrochemical methods are the most common methods for analyzing the composition of waste water. Among their advantages, it should be noted high selectivity, low concentration registration limit (up to 10-10 M for stripping voltammetric methods), simplicity in execution, absence of preliminary long-term samples preparation for analysis, the ability to microvolumes measure without samples destroying and automation of the process for continuous metals concentrations determination in waste water treatment, relatively inexpensive equipment, the ability to determine the concentration of several metal ions in a mixture. Originality. The studies have shown that most often the concentration of heavy metals in waste water determine with the using of the different modifications of voltammetric research methods (polarography and varieties of stripping voltammetry) and potentiometric research methods in particular with highly sensitive and specific ion-selective indicator electrodes. Practical value. The theoretical material on modern electrochemical methods for the heavy metal ions content determining in waste water is generalized.
WARNA DALAM AL-QUR’AN PERSPEKTIF FAKHR AL-DIN AL-RAZI
Authors: Jamal Khairunnas , Harahap Najamuddin Siraj , Dalimunthe Derhana Bulan 
Published: December 2021

Abstract: Colour has a very important role in human communication with the outside world, even more in the function of memory and brain development. Therefore, comprehension and recognition of an event is strongly influenced by the colours which exist. The focus of this research is the thematic character. It is a discussion that takes a certain theme in the Qur'an and will only be limited by mufassir (a figure). By conducting research on the figures of his work, taking his thoughts and understanding comprehensively, namely Imam Fakhr al-Din al-Razi. A step that will be taken is to collect the verses of the Qur’an which talks about colour, then thoroughly explore how the interpretation is made by Imam al-Razi related to these verses.Keywords: Colour, interpretation. Fakhr al-Din al-Razi Abstrak: Warna memiliki peran yang sangat penting dalam komunikasi manusia dengan dunia luar, terlebih lagi dalam fungsi daya ingat, dan perkembangan otak. Oleh karena itu, pemahaman dan pengenalan sebuah peristiwa sangat dipengaruhi oleh warna yang ada. Fokus kajian penelitian ini adalah tematik tokoh, tematik tokoh merupakan pembahasan yang mengambil tema tertentu dalam Al-Qur’an kemudian hanya akan dibatasi oleh mufassir (tokoh). Dengan cara melakukan penelitian tokoh dari karyanya, mengambil pemikiran dan pemahamannya secara komprehensif, yaitu Imam Fakhr al-Din al-Razi. Langkah yang akan dilakukan adalah dengan mengumpulkan ayat-ayat Al-Qur’an yang berbicara mengenai warna, kemudian mengupas tuntas bagaimana penafsiran yang dilakukan oleh Imam al-Razi terkait ayat-ayat tersebut.Kata Kunci: Warna, Tafsir, Fakhr al-Din al-Razi
Unusual intracranial suppuration: illustrative cases
Authors: Pradhan Anjali , Rutayisire François Xavier , Munyemana Paulin , Karekezi Claire 
Published: December 2021

BACKGROUND
Intracranial suppuration (ICS) is a rare complication that can arise from various disease processes and is composed of brain abscess, extradural empyema, and subdural empyema. Although significant progress has been achieved with antibiotics, neuroimaging, and neurosurgical technique, ICS remains a serious neurosurgical emergency. An uncommon presentation of ICS is sterile ICS, which has yet to be fully elucidated by clinicians. The authors present 2 cases of unusual sterile ICS: a sterile subdural empyema and a sterile brain abscess.

OBSERVATIONS
Both patients underwent surgical treatment consisting of craniotomy to evacuate the pus collection. The blood cultures from both the patients, the collected empyema, and the thick capsule from the brain abscess were sterile. However, the necrotic brain tissue surrounding the abscess contained inflammatory cells. The authors’ review of the literature emphasizes the rarity of sterile ICS and substantiates the necessity for additional studies to explore this field.

LESSONS
Sterile ICS is a disease entity that warrants further investigation to determine appropriate treatment to improve patient outcomes. This study highlights the paucity of data available regarding sterile ICS and supports the need for future studies to uncover the etiology of sterile ICS to better guide management of this condition.
Efficient Transmission of 2D Chaotic Maps Encrypted Images with DWT-Based SC-FDMA LTE System
Authors: Mehallel Elhadi , Abed Djamel , Bouchemel Ammar 
Published: December 2021

The single-carrier frequency division multiple access (SC-FDMA) is a promising technique that has been adopted as an uplink transmission scheme in the long-term evolution (LTE) cellular system. This is attributed to its advantages such as the low peak-to-average power ratio (PAPR) and the utilization of frequency-domain equalizers to resolve the problem of inter-symbol interference (ISI). In this paper, a Discrete Wavelet Transform (DWT) based SC-FDMA system is proposed for the effective transmission of encrypted images. The 2D Chaotic baker map encryption algorithm has been used to encrypt images to enhance their security during transmission via SC-FDMA- based systems. The performance of the process of encrypted image transmission using the 2D Chaotic baker map algorithm with wavelet transform-based SC-FDMA (DWT SC-FDMA) system is evaluated in terms of different performance metrics, with comparison to Discrete Fourier Transform SC-FDMA (DFT SC-FDMA) and, Discrete Cosine Transform SC-FDMA (DCT SC-FDMA) systems. The viability of the proposed scheme was tested with different wireless channel models and different subcarriers mapping schemes. Experimental results show that the proposed method of the encrypted image transmission via the DWT SC-FDMA system provides a remarkable performance gain compared to the other versions of the SC-FDMA system in terms of the PSNR, and the BER metrics in the wireless channel models. It also demonstrates the effectiveness of the proposed scheme and adds a degree of encryption to the transmitted images through the wireless channels.
Triggering Drug Release and Thermal-Disrupting Interface Induced Mitigation of Composite Photothermal Hydrogel Treating Infectious Wounds
Authors: Hua Long , Qian Hu , Lei Ting , Liu Wenbin , He Xi , Hu Yihe , Lei Pengfei 
Published: December 2021

Introduction: With the development of photothermal technology, the appearance of composite photothermal hydrogels has increased the selectivity of treating infectious skin defects. However, how to design composite photothermal hydrogel with better antibacterial performance, reduce the resistance rate of bacteria, and the damage rate of normal tissue still needs further study.Methods: The Prussian blue and tannic acid were loaded on polyacrylamide hydrogels. Characterization of DLS, Zeta potential, UV absorption spectrum, hydrogel swelling rate, scanning electronic microscopic, drug release profile, photothermal properties, in vitro cytocompatibility, and antibacterial properties. Experiments were measured by skin defect repair, antibacterial detection, and histological staining experiments.Results: The polyacrylamide hydrogel with photothermal effect and controllable release of tannic acid was successfully prepared. The hydrogel has strong light transmittance and adhesion, and the swelling rate can reach 600%, which improves the self-cleaning ability. SEM results showed the porous structure of hydrogels, promoting cell growth. Through photothermal switches, the composite hydrogel represented adjustable and controllable drug release ability. Combined with the synergistic antibacterial effect of tannic acid, this further enhanced the antibacterial ability and reduced the probability of antibiotic resistance. The in vitro and in vivo experiments showed the hydrogel had good biocompatibility and excellent antibacterial properties, which could promote the repair of infectious skin defects in SD rats.Conclusion: We fabricated a hydrogel with a triggering drug release rate, alleviating heat damage, transparent morphology, mechanical stability, strong adhesion, good biocompatibility, and synergistic antibacterial ability, which presents new treatment options for infectious skin defect repair.