bluuebunny/crossref_metadata_2025 huggingface dataset:
Assessment of 35 Years Longitudinal Observations on Melanoma Patients in a Single Center of Hungary’s Central Region: Effect of Interferon Immunotherapy
Authors:   Central Hospital Of The Hungarian Defense Forces, Zámolyi Szilvia
Published: September 2021

Background: The incidence of melanoma malignum increases worldwide. Detailed objective analyses from central European region are scarcely available. Objective: To obtain validated data on melanoma distribution and retrospective analysis in the central region of Hungary based on 35 years of experience in a single center. Methods: The authors monitored the clinical course of their patients with melanoma between 1984 and 2018 based on the digitalized documentation of their institute. They analyzed the treated and non-treated cases with the leadership of a dermatologist-pathologist-oncologist. Altogether 867 cases (450 female, 417 male) were examined from the removal of the primary tumor onwards in retrospective way. Results: Distribution of gender, age, tumor stages and body regions by genders were examined. The authors also reviewed the asymptomatic period until tumor progression, morbidity data, the period and effect of the adjuvant low, intermediate and high dose interferon α-2b immunotherapy. Patients with lymph node metastasis who received low or intermediate dose immunotherapy experienced significantly longer tumor-free period than those who got high-dose immunotherapy. In both treated groups, the median value of the asymptomatic months was higher compared to the observation only” group. Conclusion: The results of their long-term follow-up contribute to the accurate evaluation of melanoma and of the interferon therapy in Hungary and in the region.
Treatment of Genital, Scalp and Face Psoriasis with Risankizumab
Authors:   Universidade De Mogi Das Cruzes, Brazil, AL Okita
Published: September 2021

Psoriasis affecting the face, scalp, hands, feet, nail and genitals may cause disproportional impact on quality of life despite the small surface area compromised. Genital psoriasis can affect 33 to 63% of psoriasis patients at any time during their lives. Even though GenPs is relatively common, these lesions may be under-reported and under diagnosed because of embarrassment of patients, unfamiliarity with the disease or concerns about having a sexually transmitted disease. Several effective treatments have been reported for plaque psoriasis, however there are few studies and reports regarding GenPs treatment. We report here a case of successful treatment of a patient with genital, face and scalp psoriasis with risankizumab, an anti-IL23 drug
Physiological Effects of Manganese Gluconate and Calcium Combination from Saint-Gervais Mont Blanc Spring Water for Human Keratinocytes Differentiation
Authors:   L’Oréal Research & Innovation, Advanced Research, Juchaux Franck
Published: September 2021

Alterations of skin barrier function affect quality of life and there is a need to develop dermatological/cosmetic treatments to reinforce or restore it. Inspiring of Hailey-Hailey disease, in which barrier alteration is due to a mutation of a Calcium-transporting protein (ATP2C1), we focused on the role of minerals and more especially those contained in Saint-Gervais Mont Blanc (SGMB) spring water to reinforce barrier function. Objectives: Demonstrate the interest to enrich SGMB spring water with manganese to improve both keratinocytes differentiation and barrier function. Methods: Effects of treatments on the expression of ATP2C1 and on the expression of key markers in keratinocyte differentiation and barrier function were studied by gene expression analysis on keratinocytes monolayers and also by measuring the protein expression of transglutaminase 1 using in situ immunofluorescence and image analysis in keratinocytes monolayers. Results: SGMB spring water stimulates transcriptomic expression of key markers involved in keratinocytes differentiation and barrier function while manganese gluconate has no effect. Combination of both dramatically enhances keratinocytes differentiation, in a synergistic way, at both transcriptomic and protein level. None of treatments modulated ATP2C1 expression. Conclusion: These results highlight the interest to enrich SGMB spring water with manganese to boost keratinocytes differentiation and barrier function.
Skin, Light and their Interactions, an In-Depth Review for Modern Light-Based Skin Therapies
Authors:   Albany Cosmetic And Laser Center, Alhallak Kamal
Published: September 2021

Light-based therapies, including laser, have evolved over the last decades in the dermatology and cosmetic fields. Practitioners should have a deep understanding of the mechanism of action and the effect of different laser parameters on treatments outcomes and safety profiles. Moreover, practitioners would not be able to improve the existing laser treatment protocols or develop new ones without understanding the light fundamentals and different laser-skin interactions. This review article attempts to bridge the theoretical concepts of laser and skin anatomy with the practical applications of light-based treatments.
Pengaruh Curah Hujan dan Pemupukan terhadap Produksi Tebu (Saccharum officinarum L.) di Pabrik Gula Asembagus Kabupaten Situbondo
Authors: Hartatie Dian , Taufika Ramadhan , Achmad Prihat Brillianti
Published: September 2021

Produksi tebu dipengaruhi oleh berbagai faktor beberapa faktor yang mempengaruhi adalah iklim dan pemupukan. Iklim terutama curah hujan dapat mempengaruhi produksi tebu dan rendemen tebu. Pemupukan merupakan kegiatan menambahkan unsur hara dan nutrisi ke dalam tanah, namun pemupukan yang berlebih tanpa melalui analisis tanah dan analisis daun akan berdampak negatif pada tanaman tebu. Kegiatan ini bertujuan untuk mengetahui hubungan curah hujan dan pemupukan serta pengaruh keduanya terhadap produksi tebu di Pabrik Gula Asembagus Kabupaten Situbondo. Penelitian ini dilaksanakan di Pabrik Gula Asembagus  Kabupaten Situbondo pada bulan Agustus 2019 sampai dengan Desember 2019. Analisis statistika yang digunakan yaitu analisis korelasi dan regresi linier berganda. Hasil analisis statistik menunjukkan bahwa curah hujan terhadap produksi tebu memiliki korelasi positif dengan tingkat hubungan yang kuat dan pemupukan terhadap produksi tebu memiliki korelasi positif dengan tingkat hubungan yang rendah. Hasil analisis regresi linier berganda menunjukkan curah hujan dan pemupukan secara signifikan berpengaruh terhadap produksi tebu di Pabrik Gula Asembagus Kabupaten Situbondo.
Strategi Peningkatan Kualitas Produk Rokok Kretek “Gagak Hitam” Dengan Menggunakan Metode SWOT dan AHP di Perusahaan Rokok Gagak Hitam Kabupaten Bondowoso
Authors: Andini Paramita , Kurnia Bagus Putu Y. , Suryadi Ujang , Hudori Huda Ahmad , Pratama Fredy Eka A.
Published: September 2021

Penelitian ini bertujuan untuk merumuskan strategi yang tepat dalam meningkatkan kualitas produk rokok kretek Gagak Hitam dan menentukan strategi prioritas yang dapat diterapkan dalam meningkatkan kualitas produk rokok kretek Gagak Hitam. Metode penelitian yang digunakan adalah studi kasus. Analisis yang digunakan adalah Strength, Weakness, Opportunities, Threats (SWOT), dan Analytical Hierarchy Process (AHP). Responden yang digunakan dalam penelitian ini adalah konsumen rokok kretek Gagak Hitam, manajer produksi, manajer personalia dan umum, manajer pengadaan dan perencanaan bahan baku, Disperindag, dan pakar akademik dari Politeknik Negeri Jember. Hasil analisis SWOT didapatkan 7 alternatif strategi yaitu konsistensi racikan, pengembangan pasar, peningkatan SOP, teknologi yang dapat mendukung produktivitas, penambahan kegiatan promosi, pelatihan SDM, dan penambahan bagian Research and Development (RnD). Hasil analisis AHP menghasilkan prioritas strategis yang direkomendasikan untuk perusahaan, yaitu konsistensi racikan.
Sistematización del programa de “Hábitos y estilos de vida saludables”, desarrollado con trabajadores de la Fundación Hospital San Pedro
Authors: Barca Arellano Sandra María , Herrera Santacruz Juan Pablo , Castillo Mejía Maritza Alejandra , Melo Villota Yennifer Natali
Published: September 2021

El artículo presenta la sistematización de las estrategias y los logros del programa de hábitos y estilos de vida saludables (HEVS), como parte del proyecto de práctica profesional del Programa de Psicología de la Universidad de Nariño con trabajadores de la Fundación Hospital San Pedro de la ciudad de Pasto, a través de una estrategia metodológica que pretende convertir la experiencia práctica en objeto de estudio e interpretación teórica. La información resultante de las acciones realizadas durante el periodo 2013-2016 se organizó en las categorías denominadas “estrategias utilizadas para la promoción de hábitos y estilos de vida saludables” y “logros del programa” dando cuenta de las fortalezas y oportunidades de mejora a lo largo del proceso.
Adolescencia y criminalidad en el sistema penal colombiano: un estudio desde la noción de responsabilidad subjetiva
Authors: Páez Ruiz Mario Andrés
Published: September 2021

Entendiendo la ciencia política en la perspectiva de Manuel Alcántara como un análisis de sistemas políticos, y reconociendo en esta ciencia social un terreno de investigación multidisciplinaria, el presente estudio corresponde a un análisis elaborado con las categorías definidas como Polity, Policy y Politics, aplicadas a las políticas de infancia y adolescencia vigentes en Colombia. Para tales efectos, el proceso metodológico implicado en este trabajo, se encuentra apoyado en los aportes conceptuales del psicoanálisis y en las orientaciones metodológicas ilustradas por el filósofo francés Michel Foucault. El objetivo de esta investigación, obedece al interés por indagar acerca del lugar que le otorga la Ley 1098 de 2006 a la noción de responsabilidad, en el marco del Sistema Colombiano de Responsabilidad Penal para Adolescentes (SRPA). Por consiguiente, se han analizado las disposiciones y fundamentos de dicha ley, con el fin de interrogar la implementación de esta última a partir de la noción de Responsabilidad Subjetiva, en referencia a la relación entre adolescencia y crimen.
Pulmonary tuberculosis in young infant diagnosed by contact evaluation - Case report
Authors: Garest Carolina , Campos Igor , Mello Sergio , Barbosa Ana Paula , Araújo Priscilla , Sias Selma , Cardoso Claudete , Schmidt Christiane
Published: September 2021

The purpose of this report is to emphasize the importance of tuberculosis (TB) contacts evaluation in order to detect cases of latent tuberculosis infection (LTBI) and active TB. This case reports a two-month-old infant diagnosed with pulmonary TB with a bacilliferous mother whose diagnosis of TB occurred in the second week of puerperium. The correct evaluation of the child allowed the early diagnosis and treatment of pulmonary TB, avoiding its evolution to severe forms of the disease (miliary TB and meningoencephalitis) and its sequelae or deadly outcome.
Crimen organizado transnacional: Fronteras y actores en el hemisferio
Authors: Rey Pinto Eva María , Rodríguez Samora Diego
Published: September 2021

El presente libro: Crimen Organizado Transnacional: fronteras y actores en el hemisferio, busca realizar un diagnóstico del hemisferio en términos de los actores y las fronteras que se encuentran dentro de las dinámicas del crimen organizado transnacional. Este esfuerzo conjunto de investigación expone la importancia de entender qué está pasando en la región y cómo las instituciones estatales pueden enfrentar esta nueva amenaza que ha evolucionado y que preocupa a la región. La globalización trajo enormes ventajas para el mundo, facilitó el intercambio de información, permitió la conexión y generó nuevos espacios para el comercio. Sin embargo, esto ha sido aprovechado por las economías ilegales para reproducir las cadenas delictivas de tráfico ilícito de armas, personas y drogas, principalmente. Esto se ha convertido en un problema que desborda la capacidad de los Estados del hemisferio, lo cual incentiva la cooperación en la región y se percibe como un reto compartido para ser enfrentado. Entendiendo la naturaleza de dicha amenaza, este trabajo busca explorar el crimen organizado en Brasil, Colombia, el triángulo norte y México, desde el punto de vista de sus fronteras marítimas y terrestres. Esto, con el fin de entender la volatilidad que permite la condición porosa de los espacios fronterizos, lo cual potencia la amenaza y dificulta las maneras para combatirla. Adicional a esto, los trabajos exponen las estrategias individuales y conjuntas en la región y la creación de nuevas propuestas. Este libro resultado de investigación es producto del proyecto titulado “Crimen Organizado Transnacional y Conflictos Ambientales en AL”, que hace parte de la línea de investigación “Estrategia, geopolítica y seguridad hemisférica”, del grupo de investigación “Masa Crítica”, reconocido y categorizado en (B) por Colciencias, registrado con el código COL0123247, adscrito y financiado por la Escuela Superior de Guerra “General Rafael Reyes Prieto”.
Perfil geográfico, temporal, epidemiológico e toxicológico das vítimas idosas de suicídio no Rio Grande do Sul, Brasil, entre 2017 e 2019
Authors: Franck Maria Cristina , Monteiro Maristela Goldnadel , Limberger Renata Pereira
Published: September 2021

Introdução: O suicídio de idosos (pessoas com 60 anos ou mais) é um grave problema de saúde pública. Objetivo: Apresentar o perfil geográfico, temporal, epidemiológico e toxicológico das vítimas idosas de suicídio no estado do Rio Grande do Sul, Brasil, entre 2017 e 2019. Método: Estudo descritivo e transversal a partir de consulta a todas ocorrências policiais e laudos periciais relacionados aos óbitos por suicídio e construção de três modelos de regressão logística para a verificação de associações. Resultados: Ao total, foram registrados 1145 óbitos de idosos por suicídio, com aumento de 17,7% de 2017 para 2019. Os idosos corresponderam a 28,5% de todos os suicídios do período, com maior frequência de casos (53,7%) entre 60 e 69 anos. A taxa média anual de mortalidade foi 19,1 casos/100 mil habitantes, chegando a 38,6 na região Vale do Rio Pardo e a 71,6 no município de Venâncio Aires. Houve predomínio do sexo masculino (81,0%) e os idosos mostraram-se mais associados às estações do ano verão ou outono, aos dias úteis, ao período do dia, à raça branca, à presença parental na certidão de nascimento, à ausência de antecedentes criminais e aos meios suicidas enforcamento ou arma de fogo. Análises toxicológicas foram realizadas em 73,7% dos casos, observando-se uma razão de chances 2,58 vezes maior (IC95% 1,86;3,65) de as vítimas serem idosas quando os resultados eram negativos para etanol; 1,40 vezes maior (IC95% 1,04;1,88), quando eram positivos para algum antidepressivo e 1,62 vezes maior (IC95% 1,14;2,34), quando eram negativos para ansiolíticos. Conclusão: Esse trabalho apresentou dados que podem direcionar programas de prevenção do suicídio entre idosos.
Internet memes as a new sociocultural phenomenon
Authors: Ryzhkov Kirill  Leonidovich
Published: September 2021

The subject of this research is the Internet meme as a phenomenon in modern culture, while the object is the study of global Internet environment for the existence of this phenomenon. The author explores the role of the Internet meme in culture in the context of globalization and Internet development; communication function of the Internet meme in modern society; as well as the use of Internet memes as informational and semantic signals that affect the existing media markets. Special attention is given to interrelation between the Internet meme as a cultural object and the Internet as a global environment for people’s communication worldwide. The main conclusions lies in determination of the role of the Internet meme in the modern social life, as well as its place in the cultural sphere. The author's special contribution lies in description of the mechanisms of impact of the Internet memes on media markets, as well as the market and information field of news, advertising, marketing, and propaganda. The relevance of this work is defined by the analysis of emergence of the Internet meme not only as a result of creativity, but also as a commercial product and means of information manipulation. The novelty of consists in examination and analysis of such aspects of the Internet memes as a phenomenon that have become significant in the last few years, which is proven by the active attention paid of businesses and the government.
Covid-19 e os impactos na saúde mental: uma revisão narrativa
Authors: Figueira Débora Cristina Mendes , Hasegawa Luciana Eda Maximiano , Attem Marinice Saraiva , Bezerra Maria Eduarda Campos , Trajano Eduarda Viana , Giló Larissa Andrade , Bezerra Daniela Machado , Júnior Manoel Aguiar Fenelon , Silva Maria Goreth Pearce de Sousa , Ramos-Jesus Joilson
Published: September 2021

Objetivo: Apresentar através de uma revisão narrativa os aspectos gerais da covid-19 e a importância do cuidado com a saúde mental diante deste cenário. Revisão bibliográfica: Atualmente, vivencia-se a pandemia da COVID-19, doença causada pelo novo coronavírus SARS-CoV-2. Seu primeiro relato ocorreu em Wuhan, na China. Pertence à família Coronaviridae, infecta animais e humanos, provocando alterações respiratórias podendo atingir graus de gravidade variando entre leve a grave. Medidas terapêuticas e profiláticas estão sendo pesquisadas e testadas, sendo o isolamento social a medida comportamental mais segura para prevenir a disseminação do patógeno. Dessa forma, faz-se necessário educar a população e sensibilizar quanto a importância dessa prática. Contudo, a interrupção de atividades diárias, o confinamento em casa, a incerteza, o distanciamento social, o medo da infecção são fatores desencadeantes de ansiedade. Considerações finais: Embora atitudes restritivas representem medidas essenciais de saúde pública para conter a propagação da pandemia COVID-19, trata-se de uma séria ameaça à saúde mental e ao bem-estar da população em geral. Dessa forma, orientar, tranquilizar e prestar apoio à população vulnerável é imprescindível para amenizar os danos.
Development and application of an integrated system of mathematical models for the transfer of radionuclides upon a hypothetic accident to minimize radioecological consequences
Authors:   Nuclear Safety Institute of the Russian Academy of Sciences, Sarkisov A.A. , Antipov S.V. ,   Nuclear Safety Institute of the Russian Academy of Sciences, Bilashenko V.P. ,   Nuclear Safety Institute of the Russian Academy of Sciences, Vysotsky V.V. ,   Nuclear Safety Institute of the Russian Academy of Sciences, Dzama D.V. ,   Nuclear Safety Institute of the Russian Academy of Sciences, Kobrinskiy М.N. ,   Nuclear Safety Institute of the Russian Academy of Sciences, Pripachkin D.A. ,   Nuclear Safety Institute of the Russian Academy of Sciences, Smolentsev D.O. ,   Nuclear Safety Institute of the Russian Academy of Sciences, Shvedov P.A. ,   Nuclear Safety Institute of the Russian Academy of Sciences
Published: September 2021

An integrated system of mathematic models is developed and implemented. The system is aimed at predicting the spread of the radioactive materials in the Arctic waters from a complex source distributed in space and time, formed by an emergency release of radionuclides from a nuclear-powered facility. Such approach allows taking into account various mechanisms of radionuclide transfer in arbitrary combinations. In addition to customary considered atmospheric and marine advection-diffusion processes with sedimentation on the underlying surface, it takes into consideration other mechanisms. Among them are particle sedimentation to the sea bottom with bottom capture, reverse process of washing-out from the bottom sediments. Specially attended is the Arctic-specific mechanism of particle ice-binding in the sea ice, drift of the frozen particles with ice, and their return to marine environment in result of ice thawing. The latter process may result in the appearance of the radioactive source at the large distance from the initial source and long time after the release event. The integrated model complex will provide the most realistic picture of the radioactive trace spread. It will sure be the effective tool for minimizing the emergency negative impact on the population and environment. The article a stage of long-term work that is currently ongoing.
The COVID-19 pandemic in the Russian Arctic: some socio-economic results of 2020
Authors:   Luzin Institute for Economic Studies — Subdivision of the Kola Science Centre of the RАS, Korchak E.A.
Published: September 2021

The relevance of this study is determined by the fundamentally new reality of the COVID-19 pandemic, which is expected will significantly exacerbate the systemic problems of the Russian Arctic, increase the need for state control over main spheres of life and produce precedents for changes in corporate governance practices in the Arctic. The study intends to identify the current socio-economic dynamics of the Russian Arctic regions under the COVID-19 pandemic. The author set the following objectives for her study: analysis of the COVID-19 pandemic as a threat to the economic security of the Russian Arctic, review of the actions of resource corporations and regional authorities under the COVID-19 pandemic, including in relation to the indigenous population of the North, and analysis of the impact of the COVID-19 pandemic on the economy of the Russian Arctic regions. Among the main socio-economic outcomes of 2020 for the Russian Arctic in the context of the COVID-19 pandemic, the author identifies a decline in economic activity and an increase in unemployment.
D magnetic model of the Earth’s crust of the White Sea and adjacent territories
Authors:   Institute of Geology of the Karelian Research Centre of the Russian Academy of Sciences, Nilov M.Y. , Bakunovich L.I. ,   Institute of Geology of the Karelian Research Centre of the Russian Academy of Sciences, Sharov N.V. ,   Institute of Geology of the Karelian Research Centre of the Russian Academy of Sciences, Belashev B.Z. ,   Institute of Geology of the Karelian Research Centre of the Russian Academy of Sciences
Published: September 2021

An important task for the White Sea region, Russia’s second largest diamond-producing province, is the search for magmatic bodies overlapped by sedimentary cover via magnetometer survey. The models, linking local and magnetic anomalies with their sources, are essential for interpretation of search results. The aim of the study is to build a 3D magnetic model of the Earth’s crust for the White Sea region using aeromagnetic data and the modeling technologies of the Integro software package. The simulation is basing on a digital map of the pole-reduced anomalous magnetic field. The sources of magnetic anomalies are believed to be located in the Earth’s crust. The researchers obtained 3D distribution of the relative magnetic susceptibility of rocks by solving the inverse problem of magnetic prospecting. To separate the magnetic sources by spatial frequencies and depth, the model magnetic field was recalculated upward, as well as the TDR derivatives, which determine the lateral boundaries of the sources of positive magnetic field anomalies, were calculated. The researchers further analyzed 2D distributions of the magnetic sources of the model for vertical and horizontal sections with depths of 10, 15 and 20 km, thus proving the relationship between the surface and deep structures of the magnetic sources of the Earth’s crust in the region.
Less-common and rare earth elements of the Pechenga region ores
Authors:   Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of RAS, Lobanov K.V. , Grigoryeva A.V. ,   Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of RAS, Volkov A.V. ,   Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of RAS, Chicherov M.V. ,   Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of RAS, Murashov K.Y. ,   Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of RAS
Published: September 2021

The article presents the investigations in the Pechenga ore region — one of the largest industrial regions in the Arctic zone of Russia, located on the territory of the Murmansk area. The researchers obtained new data on the chemical composition of the main ore minerals, the content of trace elements, including rare earths (REE), in the ores of the Pilguyarvi and Vostok deposits and late polymetallic veins of the Pechenga region. They found that the main textural types of ores (massive, veined and disseminated) differ significantly in chemical composition and content of rock and ore-forming components. They also revealed the enrichment of ores with a wide range of trace elements. In comparison with the upper crust, the Pechenga ores are clearly enriched with chalcophilic and siderophilic trace elements. The enrichment coefficients of ore elements reach mainly tens (Cr, Au, Cd) hundreds (Ag, Se, Re, Pt) and thousands (Ni, Cu, Ir) times. The distribution of trace elements in various types of Cu-Ni ores has a great similarity, which indicates their geochemical affinity and synchronous participation in ore formation. The geochemical features are in good agreement with the mineral composition of the ores. The concentration of rare earth elements in the main types of ores, with the exception of massive ores and late polymetallic veins, exceeds the level of the chondrite standard and the REE fractionation is weak. The composition of the REE in ores came by from the host rocks. The research has established the high enrichment of all types of Re, Bi and Cd ores, which are potentially industrially significant as high-tech metals and are of considerable interest for associated mining.
Ecological and economic assessment of public health in the Komi Republic
Authors:   Institute of socio-economic and energy problems of the North, Komi Science Centre Ural Branch of the RАS, Dmitrieva T.E. , Fomina V.F. ,   Institute of socio-economic and energy problems of the North, Komi Science Centre Ural Branch of the RАS
Published: September 2021

The authors assess the economic damage caused by the morbidity and mortality of the working-age population and identify the negative impact of environmental factors on the state of health at the municipal level. To achieve this the authors studied morbidity and mortality of the population in the region and in the municipalities over the past five years according to the international classification of diseases. Via foreign and domestic methodology for assessing, they also analyzed the degree and the spatial structure of the impact of the environmental factors on public health. Of the two international approaches to measure lost labor income due to premature death and diseases — “costly” and “profitable” — the authors used the second approach, adapted to the domestic information base and the available algorithm for calculating economic damage. Preliminary estimates of the lost profit from morbidity and premature mortality in the Komi Republic have determined the value of the unproduced GRP by years of the period from the impact of all causes for 1.5% of its total volume. The main sources of lost profits due to premature mortality are cardiovascular diseases and cancer, and due to morbidity — musculoskeletal diseases and respiratory infections.
The role of wind energy in the socio-economic development of the Russian Arctic zone regions (on the example of the Murmansk region)
Authors:   Northern Energetics Research Centre Kola Science Centre of the Russian Academy of Sciences, Bezhan A.V.
Published: September 2021

The author provides information on the current state and prospects for the development of wind energy in the Murmansk region. He outlines the role of wind energy in the formation of conditions for the social and economic development of the region. The author proves that the Murmansk region has all the prerequisites to become a place for developing the most modern technologies for manufacturing key elements of wind turbines (WT) designed to operate in the harsh climatic conditions of the Russian Arctic zone (AZRF). The region can be a basic testing ground for the introduction and study of innovative technological solutions for the construction of WT, which in the future can be used throughout the AZRF. At the same time, the Murmansk region can be given a special place in the issue of training highly qualified specialists in the field of design, construction and operation of WT. In turn, the presence of a high scientific and educational potential in the Murmansk region will contribute to the success of these areas of development of the region.
PENGARUH SERBUK CANGKANG TELUR AYAM DAN PUPUK NPK 16:16:16 TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN TOMAT (Lycopersicum esculentum Mill.)
Authors: Roni Setiawan  , Saripah Ulpah  , Raisa Baharuddin
Published: September 2021

Tomato (Lycopersicum esculentum Mill.) is one of the vegetables that have high economic value. However, tomato production in Riau is constrained by low fertility and acidity. Egg shell waste can be used as a substitute for lime to increase soil pH. NPK fertilizer is used to provide nutrients for plants. This study aims to determine the effect of chicken eggshell powder and NPK 16:16:16 fertilizer on the growth and yield of tomato plants. This research was conducted in the experimental farm of the Faculty of Agriculture, Riau Islamic University, Pekanbaru. The study was conducted from March to July 2019. The study was conducted using a completely randomized design (CRD) with 16 treatments and repeated 3 times. The first factor was chicken eggshell powder with 4 levels (0, 15, 30, 45 g/plant) and the second factor was NPK fertilizer 16:16:16 with 4 levels (0, 10, 20, 30 g/plant). The results showed that the interactions occurred in the number of fruits per plant, fruit weight per plant on reatments for 45 g of chicken eggshell powder/plant and NPK 16:16:16 30 g / plant.
Rh NPs Immobilized on Phosphonium-based Supported Ionic Liquid Phases (Rh@SILPs) as Hydrogenation Catalysts
Authors: Zenner Johannes , Moos Gilles , Luska Kylie L. , Bordet Alexis , Leitner Walter
Published: September 2021

A series of phosphonium-based supported ionic liquid phases (SILPs) was prepared for the immobilization of Rh nanoparticles (Rh@SILP). The influence of systematic variations in the structure of the ionic liquid-type molecular modifiers (anion, P-alkyl chain length) on the formation and catalytic properties of Rh nanoparticles (NPs) was investigated. Both the nature of the anion and the length of the P-alkyl chain were found to have a strong impact on the morphology of the NPs, ranging from small (1.2 - 1.7 nm) and well-dispersed NPs to the formation of large NPs (9.9 -16.5 nm) and/or aggregates. The catalytic properties of the resulting Rh@SILP materials were explored using the hydrogenation of benzylideneacetone and biomass-derived furfuralacetone as model reactions. The changes in ring and C=O hydrogenation activity as a function of the SILP structure and the Rh NPs size allowed for the selective synthesis of products with distinct molecular functionalities.
Towards a Plastic Circular Economy: Bio-derived Plastics and their End-of-life Strategies
Authors: Verstraeten Simon B. C. , Van Muyden Antoine , Bobbink Felix D.
Published: September 2021

Herein, we describe the status of bio-derived plastics as well as the existing and emerging technologies that are available for their post-consumer end-of-life valorization. We first present how bio-derived plastics can be produced from renewable materials such as biomass and CO2. In the second section, we present an overview of the technologies available for the end-of-life, including pyrolysis and gasification and how they can be leveraged towards a circular economy. We continue the discussion with the presentation of an emerging technology, polyolefin hydrocracking. Finally, the concepts are discussed in light of life cycle analysis that aid in assessing the sustainability of manufacture (and recycling) methods.
Polarización en Twitter durante la crisis de la COVID-19: Caso Aislado y Periodista Digital
Authors: Arce García Sergio , Vila Márquez Fátima , Fondevila i Gascón Joan Francesc
Published: September 2021

La proclamación del Estado de Alarma en España en marzo de 2020 trajo consigo un periodo de gran intensidad informativa en medios tradicionales y digitales. Lo extraordinario de la medida, que dotaba de medidas excepcionales al Ejecutivo para hacer frente a la pandemia de Covid-19, dio lugar a un escenario tremendamente polarizado. En este contexto, diversos portales conocidos por la difusión de campañas de desinformación e, incluso, promoción de ideas simpatizantes con la extrema derecha, fueron especialmente activos en redes promoviendo la difusión de contenido ideológico con el objetivo de captar tráfico para su posterior monetización mediante publicidad. Este trabajo hace el seguimiento de la actividad alrededor de dos portales en Twitter, Caso Aislado y Periodista Digital, con la intención de arrojar luz sobre su papel en el clima de polarización política. Durante más de dos meses, se captaron, almacenaron y estudiaron más de 100.000 tweets mediante el software R y diversos algoritmos para dilucidar la actividad social, la posible existencia o no de bots o perfiles automatizados, la naturaleza del contenido vertido y la carga emocional asociada a él. Se comprueba una intensa actividad organizada alrededor de ambos portales a través de un alto porcentaje de cuentas aparentemente automatizadas y el apoyo de perfiles influencers que ejercen como redifusores de alta potencia. Aunque con diferencias propias de cada medio, es posible entrever una coordinación intencionada a través de campañas que aúnan contenidos, uso de cuentas de apoyo y automatizaciones.
La gestión de la comunicación de riesgo a través de Facebook: Análisis exploratorio de las estrategias iniciales de 12 gobiernos de América Latina frente a la pandemia de la COVID 19
Authors: Cárdenas Ruiz Juan David , Pineda Rodríguez Nidia Katherine
Published: September 2021

La pandemia del Sars-Cov 2 hizo replantear las formas de comunicación de los gobiernos. Las estrategias discursivas en cuanto al uso de medios y las formas de comunicación se volcaron a entender la pandemia y comunicar el riesgo. Este artículo analiza los casos de doce países latinoamericanos frente a la capacidad del Ejecutivo en la adaptación a la comunicación de riesgo, como principal herramienta para modificar hábitos y conductas con el fin de prevenir el riesgo, así como el uso potencial que le otorgaron a las redes sociales para establecer un contacto inmediato y a tiempo real con sus ciudadanos. Para tal fin, el estudio se sustenta teóricamente desde los estudios de la comunicación de riesgo, la Agenda Setting, el Framing y las redes sociales. La investigación tomó las cuentas oficiales de Facebook de Presidencia, Ministerios/secretarías de salud y cuentas personales presidenciales para analizar el contenido de las publicaciones, desde el primer caso de contagio reportado en cada país, hasta el 30 de junio, fecha de corte. Se realizó un muestreo aleatorio estratificado por cada país, dando como resultado un total de 1420 publicaciones analizadas. Los resultados principales van desde la multiplicación de seguidores a estas cuentas oficiales, en los 3 primeros meses de la llegada del virus a cada país, hasta los cinco temas y enfoques que cada nación logró instalar en la Agenda para comunicar a sus habitantes el fenómeno. Se puede identificar una diferencia entre el discurso que se maneja en la red social y el que se percibe en los pronunciamientos presidenciales en los medios tradicionales.
Analytical Diffusion Wave-type Solutions to a Nonlinear Parabolic System with Cylindrical and Spherical Symmetry
Authors:   Matrosov Institute for System Dynamics and Control Theory SB RAS, Kazakov A. L. ,   Institute of Engineering Science of UB RAS, Kuznetsov P. A. ,   Matrosov Institute for System Dynamics and Control Theory SB RAS
Published: September 2021

The paper deals with a second-order nonlinear parabolic system that describes heat and mass transfer in a binary liquid mixture. The nature of nonlinearity is such that the system has a trivial solution where its parabolic type degenerates. This circumstance allows us to consider a class of solutions having the form of diffusion waves propagating over a zero background with a finite velocity. We focus on two spatially symmetric cases when one of the two independent variables is time, and the second is the distance to a certain point or line. The existence and uniqueness theorem of the diffusion wave-type solution with analytical components is proved. The solution is constructed as a power series with recursively determined coefficients, which convergence is proved by the majorant method. In one particular case, we reduce the considered problem to the Cauchy problem for a system of ordinary differential equations that inherits all the specific features of the original one. We present the form of exact solutions for exponential and power fronts. Thus, we extend the results previously obtained for a nonlinear parabolic reaction-diffusion system in the plane-symmetric form to more general cylindrical and spherical symmetry cases. Parabolic equations and systems often underlie population dynamics models. Such modeling allows one to determine the properties of populations and predict changes in population size. The results obtained, in particular, may be useful for mathematical modeling of the population dynamics of Baikal microorganisms.
Integration of the Matrix Nonlinear Schr¨odinger Equation with a Source
Authors:   Urgench State University, Urazboev G.U. , Reyimberganov A.A. ,   Urgench State University, Babadjanova A.K. ,   Khorezm branch of Uzbekistan Academy of Sciences V. I. Romanovskiy Institute of Mathematics
Published: September 2021

This paper is concerned with studying the matrix nonlinear Schr¨odinger equation with a self-consistent source. The source consists of the combination of the eigenfunctions of the corresponding spectral problem for the matrix Zakharov-Shabat system which has not spectral singularities. The theorem about the evolution of the scattering data of a non-self-adjoint matrix Zakharov-Shabat system which potential is a solution of the matrix nonlinear Schr¨odinger equation with the self-consistent source is proved. The obtained results allow us to solve the Cauchy problem for the matrix nonlinear Schr¨odinger equation with a self-consistent source in the class of the rapidly decreasing functions via the inverse scattering method. A one-to-one correspondence between the potential of the matrix Zakharov-Shabat system and scattering data provide the uniqueness of the solution of the considering problem. A step-by-step algorithm for finding a solution to the problem under consideration is presented.
Vibrational spectroscopy of thin film condensates of ethanol mixture with inert gase
Authors:   Al ­Farabi Kazakh National University, Aldiyarov A.U. , Sokolov D.Y. ,   Al Farabi Kazakh National University, Tychengulova A. Z. ,   Al Farabi Kazakh National University, Yerezhep D. ,   Al Farabi Kazakh National University
Published: September 2021

It is known that by changing the concentration in an inert medium, it is possible to form clusters of various sizes of any substance by condensing them on a cold substrate from the gas phase. Traditionally, such systems are presented by molecular cryocrystals. This paper demonstrates the results of IR spectro­metric studies of cryovacuum condensates of ethanol mixture with nitrogen. The main task of this study is to explain the complex, most often, ambiguous behavior of thin films of ethanol cryovacuum conden­sates in the process of its co­condensation with nitrogen. For this purpose, vibrational spectroscopy of cryodeposited thin films of “ethanol in nitrogen” mixtures in various concentration ratios was performed. The objects of research are thin films of cryocondensates of ethanol mixture with inert gas (N2). The sam­ples were condensed at the temperature T = 16 K. The pressure of the gas phase of the mixture during cryocondensation was kept at P = 10­5 Torr. The range of ethanol concentrations in the mixtures varied from 3% to 90%. The spectral range of measurements was considered in 400­-4200 1/cm. It is assumed that the change in the concentration of ethanol in the mixture leads to the formation of various cluster compositions of ethanol molecules dissolved in an inert medium.
Scroll compressor. Analysis of calculation methods
Authors:   ITMO University, Kovanov A.V. , Zhignovskaya D.V. ,   ITMO University, Tsvetkov V.A. ,   ITMO University, Pronin V.A. ,   ITMO University
Published: September 2021

The paper deals with some aspects of mathematical modeling of a scroll compressor. Various approaches to modeling the working processes of machines of the volumetric compression principle, their applied value and priority of use are presented. An analytical review of the methods for calculating the leakage of a compressed medium, applied to a scroll compressor, taking into account the classification of slots, is carried out. Conclusions are made about the need to clarify the assumptions and improve this technique by taking into account the fact of the mobility of the walls of the gap, depending on the share of the influence of various factors on the leakage of the compressed medium. And also about the influence of this fact on the accuracy of calculations and the optimal choice of the operating mode of the compressor. Examples are given in which taking this condition into account in the transformed systems of equations will improve the accuracy in applied calculations of the working processes of spiral machines, when designing new samples.
Structural-phase state of the surface layer of low-carbon steel after electrolytic-plasma modification
Authors:   D. Serikbayev East Kazakhstan technical university, Kombaev K.K. , Elamanov D.S. ,   D. Serikbayev East Kazakhstan technical university, Kassenova A.B. ,   D. Serikbayev East Kazakhstan technical university, Kamzin D.S. ,   Ust­-Kamenogorsk Industrial Valves Plant JSC, Toktarbaeva G.M. ,   D. Serikbayev East Kazakhstan technical university
Published: September 2021

An alternative technology of strengthening by electrolytic­plasma modification of low­carbon alloy steel for the wedge columns binding for stop valves has been developed. The processing of steel 20X samples was carried out on an experimental installation, the optimal processing modes were determined experimentally. Simulation of the treated surface makes it possible to assume that during the electrolytic­plasma heating of parts, along with quenching, chemical modification of the metal surface layers oc­curs. The volt­temperature characteristic with the superposition of real time on the proposed processing clearly shows a significant reduction in the time for hardening, relative to traditional hardening methods of similar steel. Also, energy consumption and, accordingly, the cost of the part and the product as a whole are significantly reduced. Electrolyte­plasma modification promotes the transformation of coarse­grained pearlite­ferrite microstructure into quenched martensite. An increase in hardness relative to the initial state indicates an increase in physical and mechanical properties after electrolyte­plasma treat­ment. The advantage of the method of electrolytic­plasma treatment consists in low energy consumption at high quenching rates, the possibility of local surface treatment; there are prerequisites for creating a semi­industrial installation for an alternative electrolyte­plasma hardening.
2021 Connecting Young Minds (CYM) Undergraduate Research Conference: 5-Minute Research Presentations
Authors: Bogdan Stephanie , Saleem Zain , Gandelman Michelle
Published: September 2021

Connecting Young Minds (CYM) is an annual bilingual student-led research conference held at the University of Ottawa. Our mission is to encourage undergraduate students to network with professors, present their research, and gain experience drafting scientific literature. The conference engages the interests of students in the sciences through presentations held by keynote speakers, interactive breakout rooms with graduate level students, and a research-based competition. Each year, CYM hosts a 5-minute research presentation competition in which ten candidates are selected by a panel of judges based on the submission of an abstract pertaining to their research. The competition provides an opportunity for undergraduate students to highlight their research findings to an audience and series of judges in a concise and engaging manner. Abstracts in this booklet were submitted by participants on a volunteer basis.
The Problem of the Existence of a Tree with a Characteristic Vector of Node Vertices
Authors: Popov Ivan Nikolaevich
Published: September 2021

The paper presents the problem of the existence of a tree with certain numerical characteristics. It is clear that if a tree is given, it is possible to determine the number of node vertices of the tree and leaves, as well as to determine their degrees. Thus, for a tree, you can define a set of pairs whose coordinates are numbers corresponding to the number of node vertices and their degrees. We can form the inverse problem: we give pairs of natural numbers whose second coordinates are greater than 1, and we should determine whether there is at least one tree that the numbers of its node vertices and their degrees coincide with these pairs. The solution to this problem is presented in this paper.
Reconstruction of a Three-Dimensional Human Model from a Single Image
Authors: Tarasov Alexander Sergeevich , Kugurakova Vlada Vladimirovna
Published: September 2021

This article focuses on improving the 3D reconstruction of a human model from a single pixel-aligned implicit function image presented by FaceBook Research. The drawbacks of the method are revealed, associated with limiting the quality of the original image, recommendations are presented to avoid its incorrect operation, and approaches to improve the original model are proposed, which increase the identity of the resulting model by 1.33 times. We also worked out the tactics of subsequent texture mapping and implementation of a set of animations.