bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of internal drainage on deformation behavior of GRS wall during rainfall
Authors: Yoo C. , Tabish A. , Yang J. W. , Abbas Q. , Song J. S.
Published: July 2021

Global warming-induced changes in the pattern and amount of precipitation are important from the viewpoint of long-term stability of geo-structures. In this paper, the effectiveness of in-plane drainage provided by permeable geosynthetic reinforcement was evaluated as a means to relieve the rainfall infiltration effect on GRS walls backfilled with marginal soil. A series of laboratory tests were performed using a reduced-scale model geosynthetic reinforced soil (GRS) wall (constructed with due consideration of the similitude law) with different rainfall characteristics and backfill soils. Layers of nonwoven geotextiles were used as reinforcement as well as in-plane drainage media. The results showed that the inclusion of internal drainage facilitated the dissipation of pore water pressure, thereby reducing the wall facing displacement. The discharge water volume and volumetric water content data measured in the reinforced soil zone supported the observation. The degree to which the internal drainage improves the deformation behavior of the GRS wall during rainfall was found to depend on the rainfall characteristics and the backfill soil type. Practical implications of the findings are discussed in detail.
Factors affecting geotextile filter long-term behaviour and their relevance in design
Authors: Moraci N. , Bilardi S. , Mandaglio M.C.
Published: July 2021

Geotextile and granular filters are widely used in civil (e.g. earth dams, embankments, drainage trenches, etc.) and environmental (e.g. landfills, permeable reactive barriers, etc.) engineering works. Geotextile filters are considered to be an effective alternative to conventional granular filters whose function is to prevent the movement of fine particles from the base soil allowing the liquid to flow as freely as possible. The design of a geotextile filter requires the knowledge of the base soil–filter interaction that is a very complex process due to the large number of factors involved. In this paper, the complex cases of geotextile filter design in contact with internally unstable cohesionless soils and in critical/severe applications are analysed based on recent research also developed by the authors. Moreover, the influence of the main factors affecting geotextile/filter long-term behaviour which are generally neglected in current design criteria, such as vertical effective stress, partial clogging, flow conditions, type of contact at the interface and type of permeant, are examined. Furthermore, various performance tests to evaluate the long-term soil–geotextile filter behaviour and the reliability and limits of different design criteria for cohesionless soils are discussed.
Investigation of drainage function of geosynthetics for basal-reinforced embankments
Authors: Özer Abdullah Tolga , Akay Onur
Published: July 2021

This study investigates the behaviour of basal-reinforced embankments under seepage flow. For this purpose, physical embankment models with dimensions of 195 cm long, 100 cm wide and 110 cm high were constructed in the laboratory. The seepage gradient within the embankment was generated by applying a constant water head of 100 cm at the water compartment located behind the models. The unreinforced embankment experienced seepage erosion at the toe section which triggered deep-seated global failure. Due to the limited transmissivity of the non-woven geotextile, the geotextile-reinforced embankment exhibited similar pore-water pressure distribution to that of the unreinforced embankment, which resulted in lateral spreading failure between the base of the embankment and the non-woven geotextile. In contrast, the geocomposite drain, which has a higher in-plane flow capacity compared to that of the geotextile, significantly alleviated the pore-water pressures within the embankment. The behaviour of the physical models was verified numerically by variably saturated flow modelling conducted for a wide range of in-plane permeabilities for the basal reinforcement. The effect of increasing in-plane permeability of the basal reinforcement layer on pore-water pressure reduction was quantified irrespective of the geosynthetic type.
Effectiveness of hyaluronic acid in the treatment of degenerative diseases of the temporomandibular joint: Literature Review
Authors:   Universidad de los Andes, Santiago, Chile., Fernandez-Vial Diego , Silva-Arce Fernando ,   Universidad de los Andes, Santiago, Chile., Renner Nicole ,   Universidad de los Andes, Santiago, Chile.
Published: July 2021

Objetive:The degenerative diseases of the tempo-romandibular joint (TMJ) are characterized by a progressive destruction of the articular tissues of the condyle and the glenoid fossa. The main aim of this review is to describe the effectiveness of the hyaluronic acid (HA) in the treatment of degenerative diseases of the TMJ in accordance with the available scientific evidence. Material and Methods: A literature search was made in the following databases EBSCO, Pubmed, Cochrane and Trip Database, using the keywords hyaluronic, hyaluronan, NaH, hyaluronate, TMJ, TMD, CMD, craniomandibular, orofacial pain and temporomandibular. There were no date or language restrictions applied. Results: After applying inclusion and exclusion criteria, 14 studies were included in this review (11 randomized controlled clinical trials and 3 non-randomized clinical trials). Conclusion: The studies reported a decrease in pain and improvement in functional parameters after treatment of TMJ osteoarthritis with HA. The use of arthrocentesis associated with the administration of HA provides effects synergistic, reaching a superiority the protocols with multiple injections with respect to those of a single session. The adverse effects related to the injection of HA with or without associated arthrocentesis were minor and transitory.
Biological and physico-mechanical properties of poly(methyl methacrylate) enriched with graphene oxide as a potential biomaterial
Authors:   Escuela Nacional de Estudios Superiores (ENES) Unidad León, Universidad Nacional Autónoma de México (UNAM), León, Gto., México, García-Contreras René ,   Osforma, Los Algodones, B.C., México., Guzmán-Juárez Héctor ,   Osforma, Los Algodones, B.C., México, López-Ramos Daniel ,   TPD Práctica privada., Alvarez-Gayosso Carlos ,   Osforma, Los Algodones, B.C., México.,   DEPEI-UNAM, Laboratorio Materiales Dentales, Cd. México, México.
Published: July 2021

Objective: To determine the cytotoxicity and effects of graphene oxide (GO) on cellular proliferation of gingival-fibroblasts, pulpdental cells and human osteoblasts in culture, and to determine the physical, mechanical and biological properties of poly (methyl methacrylate) (PMMA) enriched with GO. Material and Methods: T he G O w as c haracterized with SEM. Cytotoxicity and cell proliferation were determined by the MTT bioassay. The physical-mechanical tests (flexural strength and elastic modulus) were carried out with a universal testing machine. Sorption and solubility were determined by weighing before and after drying and immersion in water. Porosity was evaluated by visual inspection. Data were analyzed with Student's t-test and Tukey's post-hoc ANOVA. Results: The GO has a heterogeneous morphology and a particle size of 66.67±64.76 μm. GO has a slight to no-cytotoxicity (>50-75% viability) at 1-30 days, and at 24 hours incubation of PMMA with GO significantly stimulates osteoblasts (45±8%, p<0.01). The physical and mechanical properties of PMMA with GO increase considerably without altering sorption, solubility and porosity. Conclusion: GO alone or with PMMA has an acceptable biocompatibility, could contribute to cell proliferation, cell regeneration and improve the physical-mechanical properties of PMMA.
An unusual endodontic complication following crown lengthening surgery: A Case Report
Authors:   Centre for Restorative Dentistry Studies, Faculty of Dentistry, Universiti Teknologi MARA, Sungai Buloh, Selangor, Malaysia., Lim Tong Wah , Ong Teng Kai ,   Department of Surgical Sciences, Division of Endodontics, Marquette University School of Dentistry, 1801 W Wisconsin Ave. Milwaukee, WI.
Published: July 2021

A gummy smile is a form of excessive gingival display when smiling. The excessive gingival display due to altered eruption is likely to benefit from crown lengthening surgery in order to restore the esthetic smile. Case Report: The potential complications of the crown lengthening surgery include possible esthetic deformities, dentine hypersensitivity, transient mobility, and root resorption. The present case report reveals a rare complication happened after an esthetic crown lengthening surgery which was performed to correct the gummy smile of a 37-year-old female. The patient experienced dull throbbing pain and mild tender to percussion on tooth 11, 3 weeks after the surgery, and the symptoms did not improve after the composite restorations were placed at the cervical regions. Instead, the tooth was tender to percussion and palpation with a sign of coronal discoloration. Pulp necrosis was confirmed with the clinical tests. A cone-beam computed tomography was taken after the root canal treatment, and apical fenestration on tooth 11 was noted. Therefore, this case report shows the possible correlation between crown lengthening surgery on a tooth with apical fenestration and pulp necrosis, if the apical vasculature is severed accidentally during the procedure. Conclusion: A cone-beam computed tomography should be considered prior to the surgery and extra precaution during the surgery may reduce the risk of severing the apical vasculature if apical fenestration is evidenced.
Craniofacial and neurological manifestations in patients with Guillain-Barré Syndrome
Authors:   Universidad San Martín de Porres. Facultad de Odontología, Filial Norte. Área de Investigación, Proyección Social y Extensión Universitaria. Lambayeque, Perú., Chumpitaz-Durand Rubén , Manayay Freddy ,   Universidad San Martín de Porres. Facultad de Odontología, Filial Norte. Área de Investigación, Proyección Social y Extensión Universitaria. Lambayeque, Perú.
Published: July 2021

Introducción: Among the broad range of symptoms of the Guillain-Barré Syndrome (GBS), patients can present craniofacial manifestations. Consequently, the participation of the dental surgeon in the evaluation of the stomatognathic system using a multidisciplinary approach model is very important. Objective: To identify the craniofacial and neurological manifestations of the Guillain-Barré Syndrome in patients from three hospitals in the district of Lambayeque, Peru, in 2019. Material and Methods: A descriptive, prospective, and cross-sectional study was carried out in 59 patients diagnosed with GBS by means of a clinical evaluation carried out by previously calibrated neurologists (k=0.911). Additionally, an oral evaluation of the oral hygiene index, the periodontal status, and the oral pH was carried out. Data were processed using frequency distribution tables. Results: 44.07% of the patients presented at least one functional alteration, such as unilateral limitation for facial expressions (25.42%), dysphagia (18.64%), alteration in phonation (11.86%), and loss of the sense of taste (6.78%), showing involvement of the corresponding cranial nerves. In addition, unfavorable conditions oforal hygiene and acid pH were observed in some cases, which proved adverse for the periodontal structures of the patients. Conclusion: The study found craniofacial manifestations of GBS, such as cases of unilateral facial palsy, dysphagia, difficulty in phonation, and loss of the sense of taste, due to the alteration of the cranial nerves that command these functions. In addition, poor oral hygiene, and the presence of acidic pH in some patients created an adverse environment for the integrity of the periodontal structures.
The Motivation of Differently Aged Volunteers Who Help People and Stray Animals
Authors: Vorobieva Anastasia , Skipor Sofiia
Published: July 2021

Contemporary academic literature has controversial opinions about selflessness of motives of volunteers. Some authors state that volunteers are primarily motivated either by altruistic causes or egoistic factors; others declare the impossibility of the existence of pure altruists or egoists in the activity. Part of scholars report on the extreme importance of age regarding volunteers’ motives. Conducted studies mostly consider volunteers with people. Papers investigating motives of volunteers with homeless animals are limited. A still unsolved question is whether it is reasonable to apply received results from those who volunteer with people to volunteers with non-human recipients. In the paper, we investigate the particularities and structures of motives among volunteers with diverse ages and recipients (N=220), utilizing VFI (Volunteer Function Inventory). The research sample consisted of volunteers serving people and/or homeless animals. It has been found that volunteers are mostly motivated by values, understanding, and enhancement functions. The social, career and protective functions were not common among the volunteers. Younger volunteers tend to be more multi-motivated and actuated by egoistic factors. Starting at age 25, the older the volunteer was, the more likely their motives were selfless and distinct. Studies such as ours can be valuable in recruitment and retention of volunteers according to their needs and motives. The obtained data can be used by organizations working with differently aged volunteers and diverse recipients of assistance (e.g., people, animals).
Активность-зависимая ТМС – совмещение пространственной и временной информации
Authors: Новиков П.А. , Назарова М.А. , Решетников М.Л. , Козлова К.Д. , Макарова М.М. , Никулин В.В.
Published: July 2021

Транскраниальная магнитная стимуляция (ТМС) является методом неинвазивного воздействия на мозг человека для его изучения и модуляции в норме и при патологии. Важной проблемой, ограничивающей применение ТМС как в научных, так и в клинических целях, является крайне высокая вариативность ее эффектов. Становится очевидным, что эффекты ТМС – это не только свойство самого протокола стимуляции, но и следствие взаимодействий ТМС с особенностями нейронального фенотипа и с функциональным состоянием, в первую очередь текущей нейрональной активностью. Необходимо создание ТМС подходов, учитывающих текущее нейрональное состояние, так называемых подходов состояние или активность-зависимой ТМС. В работе представлено программное обеспечение (ПО), объединяющее возможности нейронавигации по данным магнитно-резонансной томографии и учета текущей биологической активности при ТМС. Подача стимулов происходит автоматически при выполнении заданного ряда условий, таких как начало движения/сокращение мышцы-мишени, отсутствие преактивации других мышц, правильное расположение магнитного стимулятора относительно головы испытуемого. Новизна разработанного ПО состоит в комбинации пространственной информации о положении магнитного стимулятора («где?») и временной информации о текущей биологической активности («когда?») для принятия решения о моменте запуска ТМС. Задержка запуска стимула была протестирована в эксперименте со стимуляцией по началу сокращения мышцы-мишени, и составила около 20 мс. Планируется дальнейшее развитие ПО для целей ЭЭГ-зависимой ТМС. Создание технического решения для нейронавигируемой активность–зависимой ТМС является важным условием для выхода метода ТМС на новый уровень пространственно-временной специфичности.
Relationship between functional capacity and the occurrence of adverse events during healthcare utilization
Authors: Babić Dijana , Železnik Danica , Milosević Milan
Published: July 2021

Introduction: Adverse events, safety incidents, and medical errors in healthcare can be avoided only by understanding the causes of their occurrence, and by applying the knowledge gained from the analysis of similar previous events. Since it is known that most adverse events do not originate from a single cause, most important is timely identification of numerous contributory states that can give us the opportunity to define a number of possible solutions to correct process errors and deficiencies in the system itself. The aim of this paper is to investigate the association between functional capacity of elderly living with cardiovascular diseases and the occurrence of adverse events during use of health-care services.Methods: Assessment of functional limitations was done using the Groningen Activity Restriction Scale (GARS). The presence of adverse events was evaluated after interviews with subjects and review of medical records. Differences in continuous numerical values between inpatient and outpatient service users were analyzed by the Mann–Whitney U-test. Spearman’s correlation coefficients of the number of actual adverse events with the presence of restrictions in daily activities were calculated. Fisher’s exact test or Fisher-Freeman-Halton test (in cases of table sizes larger than 2 × 2 format) analyzed the differences in category variables.Results: The total number of adverse events was 30 (10.1% of the total number of subjects), while there were 12 actual adverse events (40.0% of the total number of adverse events). No statistically significant correlation was found between the limitations in performing daily activities and the occurrence of actual adverse events (p = 0.173).Conclusion: The research conducted in this paper showed that the functional capacity of the elderly with chronic disease is not exclusively related with the occurrence of adverse events associated with health-care utilization.
Género, música y coeducación en contextos educativos
Authors: Soler Campo Sandra , Pujol i Subirà Maria Antònia
Published: July 2021

La coeducación, entendida como una educación que promueve la igualdad de género sin que exista ningún tipo de discriminación (Simón, 2010), será primordial a la hora de orientar y ofrecer actividades a los jóvenes que acaben con los estereotipos de todo tipo. En los centros educativos, los integrantes que conforman la comunidad educativa y el sistema educativo en general deberán promover políticas y aprendizajes que eviten la reproducción de tales roles. Para ello, y siguiendo las líneas propuestas por Contreras y Trujillo (2014), es necesario realizar estudios de género que permitan descubrir y cuestionar los estereotipos que de manera implícita y simbólica nos encontramos en los espacios educativos y a partir de los resultados obtenidos proponer posibles soluciones coeducativas que sean extrapolables a la vida cotidiana. La presente comunicación tiene como objetivo ofrecer un estado de la cuestión actualizado sobre la funcionalidad de la música durante la adolescencia y su relación con la identidad de género, así como también mostrar diferentes actividades coeducativas realizadas en el aula con alumnos y alumnas de 3º de la ESO desde la asignatura de música.
Estudio diagnóstico del uso didáctico de las aulas virtuales. Competencias para la docencia virtual
Authors: Mesa Vazquez Jorge
Published: July 2021

En el presente artículo se exponen los principales resultados de un estudio de tipo exploratorio - descriptivo, encaminado a analizar las competencias para la docencia virtual que poseen los docentes en la utilización didáctica de las aulas virtuales desarrolladas en la plataforma Moodle en carreras de perfil informático de la Universidad de Oriente. El enfoque utilizado en el estudio, se asentó en un paradigma mixto de investigación, fue necesario combinar varias herramientas de recogida de datos que tradicionalmente se han incluido en el paradigma cuantitativo y otros instrumentos propios del cualitativo. Se pudo constatar, que a pesar de que la muestra intencional seleccionada, consta de aulas virtuales de docentes de carreras afines a las ciencias informáticas, el uso didáctico que se evidencia dentro de la plataforma virtual de la universidad no ha supuesto un aumento en el desarrollo de competencias para la docencia virtual como exige el contexto actual.
Breaking the Silence within Critical Pedagogy
Authors: Puigvert Mallart Lidia , Kim Kyung Hi , Khalfaoui Andrea , Rios Gonzalez Oriol , Rodrigues de Mello Roseli , Joanpere Mar , Flecha Ramon
Published: July 2021

There is a wide and rich scientific literature about Gender Violence (GV) in diverse institutions and contexts, now including Isolating Gender Violence (IGV). However, there is an almost absolute silence about GV and IGV within the field of critical pedagogy despite its pretention to influence children’s education. This paper is part of a long research program on GV and presents the first evidence about its existence within critical pedagogy. The communicative methodology of this research has included interviews to 15 authors of critical pedagogy and 1 discussion group. The gender dimension is key in this research, most lists of outstanding critical pedagogists include only white males and most of them from North America, in this research there are 15 women of the 21 interviewees and diverse gender options and cultures are represented. The results clearly show that, as in any other social institutions and domains, within critical pedagogy there are upstanders against GV, those who maintain a guilty silence and harassers making direct GV and/or IGV.
Dimensional Effects in Zinc Oxide Nanocomposites as Basis for Design of New Generation Gas Sensors
Authors:   Penza State University, Penza, 440026, Russian Federation, Krupkin E.I. , Averin I.A. ,   Penza State University, Penza, 440026, Russian Federation, Pronin I.A. ,   Penza State University, Penza, 440026, Russian Federation, Igoshina S.E. ,   Penza State University, Penza, 440026, Russian Federation, Karmanov A.A. ,   Penza State University, Penza, 440026, Russian Federation
Published: July 2021

The possibility of using a nanocomposite based on zinc oxide ultrafine powder and polyvinyl alcohol as a sensitive element of a gas sensor is analyzed. It is shown that zinc oxide nanoparticles with a shape close to a rectangular parallelepiped can be considered as potential wells, separated by layers of polyvinyl alcohol that form potential barriers. The contribution of the tunneling component to nanocomposite current density is estimated for systems with and without oxygen chemisorptions. Results of numerical simulation are shown that a shift of the peaks in the dependence of transmittance on electron energy and a decrease of the tunneling current density are going with an increase in the concentration of oxygen atoms. Perspectives of the use of quantum-dimensional effects in the development of new generation gas sensors, which are based on conductivity modulation during sensor interaction with analyte gases, are demonstrated
Geometry of Structures Developed by Anisotropic Etching in the Nanometer Range
Authors:   A. M. Prokhorov General Physics Institute, Russian academy of Science, Moscow, 119991, Russian Federation, Larionov Yu.V.
Published: July 2021

Geometric disadvantages of nanostructure surface developed by anisotropic etching of silicon are discussed. These disadvantages increase uncertainness of its sizes and impeded its using as an etalons for linear measurements. The greatest uncertainness are observed for structures with trapezoid profile. They make up due to defects on sidewalls of etched structures. The surface of a sidewall is proposed to be disposed in the [111] plane and so be absolutely flat. Really parts of a sidewall surface are deflected in stepwise way from the plane [111]. This phenomenon leads to deflection of angles between converging flat sections of etched structure from its known values for silicon. Consequence of this is most drastic to a measure MShps-2K due to its structure, technology of anisotropic etching and absence of required control. Sources of these surface disadvantages induced by anisotropic etching are discussed. Possibilities to decrease disadvantages are evaluated.
Ladder Type of Leaky Surface Acoustic Waves Filters on Substrate of Lithium Niobate
Authors:   Saint-Petersburg Electrotechnical University LETI, St. Petersburg, 197376, Russian Federation, Koigerov A.S.
Published: July 2021

High requirements on the electrical parameters of the filters are made in wireless radio communication systems. A number of tasks require bandpass filters with relative bandwidths of 8-12 %. In this case, the filter must have insertion losses of not more than 10 dB, have a rejection is not worse than 40 dB, unevenness in the bandwidth of not more than 1 dB. In addition, the amplitude frequency responses of the filter must have steep slopes due to the closely spaced frequency bands of neighboring communication systems. Due to its small size and other advantages, ladder resonator filters on surface acoustic waves are widely used in communication systems. To realize the high requirements of this type of filters, it is necessary not only to select all the topology parameters of the individual resonators included in the filter very accurately, but also to have a good computational theory and the necessary material parameters for the selected model at the design stage. Purpose: to show on the example of comparison of calculated and experimental frequency responses of ladder filters the validity of the method of extraction of the necessary parameters obtained for an infinite periodic structure by the finite element method for calculating of finite structures of real inter digital transducer and reflective gratings. Results: the method of extraction of parameters necessary for calculation by the method of connected modes on the basis of P-matrices is offered. The technique is based on the analysis of infinite periodic electrodes by the finite element method. Bandpass filters with a relative bandwidth 8-12 % on a piezosubstrate 49° YX LiNbO3 were designed and manufactured based on the proposed theory. It is shown that for this material, the calculation must take into account the direct radiation of bulk acoustic waves, since the design of ladder type filters, the radiation falls into the projected bandwidth of the filters. These calculations are confirmed by the results of experiments.
The Use of Allan Variation in the Study of the Random Errors of Angular Rate Sensors
Authors:   LMD Ltd., Zelenograd, Moscow, 124527, Russian Federation, Miheev A.V. , Anchutin S.A. ,   LMD Ltd., Zelenograd, Moscow, 124527, Russian Federation, Kochurina E.S. ,   LMD Ltd., Zelenograd, Moscow, 124527, Russian Federation, Timoshenkov A.S. ,   LMD Ltd., Zelenograd, Moscow, 124527, Russian Federation
Published: July 2021

This paper describes the use of Allan variation in the study of the random errors of angular rate sensors. The results of the study are presented: Allan diagram, Angle Random Walk, Bias Instability.
On High-Temperature Galvanic Elements of Stand­by Power Supply Sources based on Energy Condensed Systems
Authors:   JSC Federal Research and Production Center Research Institute of Applied Chemistry, Sergiev Posad, Russian Federation, Prosyanyuk V.V. , Prudnikov N.V. ,   Federal State Budgetary Institution of Science Interdepartmental Center for Analytical Research in Physics, Chemistry and Biology at the Presidium of the Russian Academy of Sciences, Moscow, Russian Federation, Suvorov I.S. ,   JSC Federal Research and Production Center Research Institute of Applied Chemistry, Sergiev Posad, Russian Federation, Parshikov B.Yu. ,   Closed Joint-Stock Company Moscow Scientific Research Television Institute, Moscow, Russian Federation, Dyubanov M.V. ,   Federal State Budgetary Institution of Science Interdepartmental Center for Analytical Research in Physics, Chemistry and Biology at the Presidium of the Russian Academy of Sciences, Moscow, Russian Federation
Published: July 2021

Study of ignition, combustion and electrochemical processes occurring in thin multilayer high-temperature galvanic elements derived from low-gas energy condensed systems was carried out. The research results made it possible to design a wide range of multifunctional standby power supply sources with improved performance, differing in application types, initiation modes, activation and operation times, overall dimensions and shape.
Quantum Computer and Post-Quantum Cryptography
Authors:   JSC Concern Avtomatika, Moscow, 127276, Russian Federation, Bukashkin S. А. , Cherepniov М. А. ,   MSU, Moscow, 115432, Russian Federation
Published: July 2021

An overview of the current state of the problem of building a quantum computer and its hypothetical use for breaking cryptographic protocols is presented. The necessary parameters are considered. An overview of existing quantum algorithms and post-quantum cryptographic protocols that are strong with respect to them is presented. The problem of constructing a quantum computer is considered in comparison with the development of the theory and practice of conventional mechanical and electronic computers. The results of contests on the topic of post-quantum cryptography are presented.
On the Sensitivity of the Gamma of the Quantum Cryptographic System AKM2017 to Changes in the Session Key
Authors:   MD RF, Moscow, Russian Federation, Aliev F. K. , Korolkov A. V. ,   Russian Technological University — MIREA, AK RF, Moscow, Russian Federation, Matveev E. A. ,   Cryptosoft, Penza, 440026, Russian Federation, Sheremet I. A. ,   RFBR, Moscow, Russian Federation
Published: July 2021

The quantum cryptographic system AKM2017 is considered. The results of the analysis of the dependence of the degree of difference between the encryption and decryption gamut on the degree of difference between the corresponding session keys are presented. The equality of these degrees of distinction is revealed and substantiated. For an arbitrarily fixed encryption session key, the distribution of session decryption keys by classes is revealed and described, depending on the value of the degree of difference between the encryption and decryption gamuts. One class is made up of all session decryption keys, leading to the same value of the degree of difference between the encryption and decryption gamuts. A geometric interpretation of the specified distribution by classes is given in the form of placement along circles (class is a circle) on the surface of a sphere of unit radius centered at the origin of the Euclidean rectangular coordinate system in a three-dimensional linear space over the field of real numbers. The stated results can be used to solve the problems of optimizing the values of the parameters of accuracy and reliability of the functioning of variants of practical implementations of the quantum cryptographic system AKM2017, for example, when setting up a session decryption key, which makes it possible to guarantee a predetermined small value of the mathematical expectation of the number of incorrectly decrypted binary plain text.
On the Development of a Module for the Modification of Computational Meshes by the dsmcInitialise Utility
Authors:   South Urals Federal Research Centre of Mineralogy and Geoecology of the UB RAS, Chelyabinsk Region, Miass, Ilmen reserve, 456317, Russian Federation, Chitalov D. I.
Published: July 2021

The research, the results of which are presented in this article, is devoted to the development of a software module with a graphical user interface that provides a modification of the computational mesh based on the dsmcInitialise utility, which is used at the preprocessing stage of numerical modeling of continuum mechanics problems using the OpenFOAM software environment. The paper describes the existing graphical shells for working with OpenFOAM with an indication of their shortcomings, formulates the relevance of the work, and defines the goals and objectives of the study. The article presents the features of the direct Monte Carlo simulation method, a description of the dsmcInitialise utility integrated into OpenFOAM and designed for such modeling, as well as a description of the corresponding dictionary file with parameters. The article includes diagrams of the structure and logic of the application, describes the technology stack used. The results of the application of the program on the example of one of the training problem of OpenFOAM are presented. The final conclusions are formulated, as well as the provisions that determine the scientific novelty of the research, and its intended practical value is determined. A link to the repository with the source code of the presented software module is provided.
Creating an Electronic Course on Programming in Python for the Android Platform
Authors:   Kazan Power Engineering University, Kazan, 420066, Russian Federation, Petrova N. K. ,   Kazan Federal University, Kazan, 420008, Russian Federation, Mukhachev A. P. ,   Kazan Power Engineering University, Kazan, 420066, Russian Federation, Zagidullin A. A. ,   Kazan Federal University, Kazan, 420008, Russian Federation, Koutsenko S. M. ,   Kazan Power Engineering University, Kazan, 420066, Russian Federation
Published: July 2021

The description and principles of developing a mobile application for the Android platform that provides free access to electronic courses on teaching the basic structures of the Python language and the construction of template programming algorithms based on them are presented. The content of the course is based on the principle of comparative analysis with the C++ language, one of the goals of which is to differentiate the tasks for which it is more efficient to use either the Python scripting language or the C++ compiler. The developed application is logically integral, allows the possibility of supplementing with new data — examples, types of algorithms — and, no less important, is free.
MODERN EFFECTIVE TREATMENT OF BRAIN METASTASES OF SKIN MELANOMA. THE EXAMPLE OF CLINICAL OBSERVATION
Authors: Kurzhupov M. I. , Shabunin A. V. , Titov K. S. , Slobina E. L. , Grekov D. N.
Published: July 2021

Introduction. Melanoma of the skin has the highest potential for metastasis to the brain, ranking 15th in the frequency of occurrence among all malignant tumors – it is in third place in the incidence of intracerebral metastases. Modern methods of treatment of metastases of skin melanoma to the brain include neurosurgical treatment, radiation therapy and radiosurgery, antitumor drug therapy, including targeted therapy, immunotherapy and chemotherapy. The article discusses the indications for different methods of treatment, provides data on patient survival when using these methods of treatment alone or in combination. Additionally, a clinical case of long-term survival of a patient with skin melanoma with progression in the form of extra- and intracranial metastasis is discussed.Purpose. Evaluation of the result of using modern methods of antitumor treatment in real clinical practice in a patient with skin melanoma metastases in the brain. Materials and methods. On a clinical example, a possible sequence of an individual approach to the treatment of a patient with extracranial and intracerebral metastases of skin melanoma based on modern methods of treatment and examination is considered.Results. The use of modern methods of anticancer therapy has increased the overall survival and disease-free survival of patients with metastases of skin melanoma to the brain and reduces the need for neurosurgical interventions. As a confirmation of this, the life expectancy of the patient after the progression of skin melanoma in the form of metastases to the brain against the background of all the antitumor treatment carried out to date was 5.5 years, while neurosurgical treatment was not carried out at the request of the patient, although it was shown, but were used the possibilities of modern anticancer therapy, including sequential radiation therapy, targeted therapy and immunotherapy.Conclusion. Modern methods of anticancer therapy can significantly increase the survival rate of patients with melanoma brain metastases and individualize the treatment plan.
THE EFFECT OF MULTIAXIAL DEFORMATION ON THE DYNAMICS OF BIODEGRADATION AND CELL COLONIZATION OF ALLOY WE43
Authors: Martynenko N. S. , Anisimov N. Yu. , Novruzov K. M. , Dobatkin S. V. , Kiselevskiy M. V. , Estrin Yu. Z.
Published: July 2021

Introduction. The development of materials for bioresorbable implants is an urgent issue in medicine and materials science. Magnesium alloys are promising materials for this purpose. In particular, alloy WE43 (Mg-Y-Nd-Zr) has proven itself well in this field. However, the use of magnesium alloys is limited by a high degradation rate, which is often accompanied with nonuniform corrosion, which negatively affects the load bearing capacity of the product. In addition, the increased degradation rate usually seriously worsens the biocompatibility of magnesium alloys. Therefore, the study of the corrosion resistance of magnesium alloys, as well astheir biocompatibility, is an urgent task.Purpose of the study was to investigate the effect of multiaxial deformation (MAD), aimed at increasing the mechanical characteristics of the alloy WE43, on its biodegradation kinetics, as well as on cell colonization.Materials and methods. The alloy WE43 in two states  – homogenized (WE43 hom) and strengthened by MAD (WE43 MAD) was investigated in this work. The kinetics of biodegradation was investigated on an xCELLigence RTCA Systems analyzer. A method for estimating the volume of hydrogen was used to study the process of gas formation, which was recorded using an automated digital microscope LionheartTM FX. The corrosive medium was a solution based on Dulbecco’s Modified Eagle’s Medium. A culture of mesenchymal multipotent stromal cells was used to study the colonization of the alloy surface by cells.Results. MAD of the alloy WE43 leads to a decrease in the biodegradation rate and the intensity of gas formation. The period of stabilization of biodegradation for the alloy after the MAD is 16 hours versus 3 hours for the alloy after homogenization. In this case, the volume of released hydrogen was 65.0 ± 4.4  mm3H2/mm3 alloy and 211.0 ± ± 21.1 mm3H2/mm3 alloy for the alloy after MAD and homogenization, respectively. MAD improves the biocompatibility of the alloy WE43, stimulating the colonization of mesenchymal multipotent stromal cells.Conclusion. MAD reduces biodegradation and improves the biocompatibility of the alloy WE43, which makes it a promising medical material, including for the purposes of oncoorthopedics
Vivência de responsáveis por adolescentes na vacinação contra o papilomavírus: estudo fenomenológico
Authors: Oliveira Valéria Conceição , Silva Mariana Rodrigues da , Viegas Selma Maria da Fonseca , Guimarães Eliete Albano de Azevedo , Fonseca Deborah Franscielle da , Oliveira Patrícia Peres de
Published: July 2021

Objetivo: compreender a vivência de responsáveis por adolescentes em relação a vacinação contra o papilomavírus humano. Método: estudo de natureza qualitativa fundamentado na Fenomenologia Social de Alfred Schütz. Os dados foram coletados, no período de outubro a dezembro de 2014, por meio de entrevistas com 14 responsáveis por adolescentes que aceitaram ou não a vacinação. Resultados: os significados expressos indicam os motivos para vacinar as adolescentes: para prevenção; para assegurar um futuro melhor à filha; para a filha ser mais saudável. Os motivos porquê de não permitir vacinar as adolescentes foram: faltou informação sobre a eficácia da vacina e a vacina pode incentivar a iniciação sexual precoce. Conclusão: as experiências e os sentimentos vivenciados pelos responsáveis das adolescentes a respeito da vacina contra o papilomavírus humano, associados ao contexto cultural, possibilitaram ou não a ação de vacinar as adolescentes.
AdequaÃ§Ã£o do prÃ©-natal no Brasil e associaÃ§Ã£o com raÃ§a/cor: estudo transversal
Authors: Lessa Millani Souza de Almeida , Nascimento Enilda Rosendo do , Coelho EdmÃ©ia de Almeida Cardoso , Nunes Isa Maria , Soares IÃªda Jesus , Rodrigues Quessia Paz
Published: July 2021

Objetivo: estimar uma magnitude dos indicadoresÂ  de um alerta prÃ©-natal e uma relaÃ§Ã£o entre o Ã­ndice de adequaÃ§Ã£o prÃ©-natal e a raÃ§a / cor das mulheres.Â MÃ©todo: estudo transversal de base populacional realizado com dados da Pesquisa Nacional de SaÃºde. Realizou-se uma anÃ¡lise bivariada por modelo multinomialÂ  usando-se odds ratio (OR) como medida de associaÃ§Ã£o, e seus respectivosÂ  Ã­ndices de confianÃ§a de 95%. Resultados: a prevalÃªncia global de prÃ©-natal foiÂ  de 10,8%. A adequaÃ§Ã£o do prÃ©-natal seÂ  tornou baixa tanto para o grupo de mulheres brancas como para as negras, 15,51% eÂ  8,56%, respectivamente; noberior o conjunto positivo entre o negro e o terÂ  prÃ©-natal reduzido. DiscussÃ£o: embora tenha havido Uma Crescente inclinaÃ§Ã£o , QUANDO OS Aspectos Relacionados Ã  adequaÃ§Ã£o da EducaÃ§Ã£o diminuÃ­ram significativamenteÂ  Neste percentual. ConclusÃ£o: mulheres negras tÃªm menor chance deÂ  realizar prÃ©-natal adequado. Descritores: Cuidado prÃ©-natal; desigualdades em saÃºde; saÃºde pÃºblica
Perfil das mulheres submetidas à cesariana segundo Classificação de Robson: pesquisa de campo.
Authors: Oliveira Elaine Gomes de , Ferreira Larissa Maria , Sales Julianne de Lima , Marins Marcilene Andrade Ribeiro , Knupp Virginia Maria de Azevedo Oliveira , Quitete Jane Baptista
Published: July 2021

Objetivo: Caracterizar o perfil das mulheres submetidas à cesariana segundo a classificação da Escala Robson em um Hospital público da baixada litorânea do Estado do Rio de Janeiro. Método: Pesquisa de campo, descritiva, de natureza quantitativa, utilizando a técnica documental retrospectiva, realizada em 2016. Resultados: Foram analisados 267 prontuários de mulheres submetidas a cesariana, representando 53,4% do total de nascimentos, com maior incidência nas mulheres pertencentes ao Grupo 02 (31,46%); Grupo 01 (9,36%); e Grupo 05 (29,96%) da Escala de Robson. Conclusão: A Escala de Robson pode ser uma ferramenta útil na identificação dos grupos que efetivamente necessitam de intervenção com vistas à redução das taxas de cesáreas desnecessárias. O estudo aponta para necessidade imediata de medidas que possam qualificar a atenção ao parto na instituição pesquisada.
Diagnósticos de enfermagem em recém-nascidos em uso de cateter epicutâneo: estudo transversal
Authors: Prado Nanete Caroline da Costa , Lima Dhyanine Morais de , Santos Rebecca Stefany da Costa , Silva Dayane Damásio , Lima Cinthia Santa Rosa de , Silva Richardson Augusto Rosendo da
Published: July 2021

Objetivo: Identificar o perfil dos diagnósticos de enfermagem da NANDA Internacional em recém-nascidos com Cateter Central de Inserção Periférica (PICC) em Unidade de Terapia Intensiva Neonatal (UTIN), bem como sua associação com seus componentes, características sociodemográficas e clinico-epidemiológicas. Método: Trata-se de um estudo transversal com abordagem quantitativa. Para a coleta de dados serão utilizados, um formulário contendo dados a respeito do PICC, exame físico e a consulta a prontuários. Os dados serão analisados utilizando-se os testes de Qui-Quadrado e exato de Fisher.
Avaliação do processo de administração de medicamentos gastrintestinais em neonatologia: estudo transversal
Authors: Higa Carla Moreira Lorentz , Cheade Maria de Fátima Meinberg , Cardoso Andréia Insabralde de Queiroz , Benites Patrícia Trindade , Flores Vanessa Giavarotti Taboza , Fausto Flávia Nantes
Published: July 2021

Objetivo: Avaliar o processo de administração de medicamentos por cateteres gastrintestinais realizados pela Enfermagem numa Unidade Neonatal. Método: Estudo observacional de corte transversal, de abordagem quantitativa, que será realizado por meio de observação sistemática do processo de trabalho durante a administração de medicamentos, com o auxílio de roteiro estruturado. O número de doses a serem observadas comporão a amostra da pesquisa, que foi calculada por meio de fórmula utilizada para estudos transversais de população finita, resultando em 150 observações. Ocorrerá a análise de desempenho com ponto de corte de 70%. Resultados esperados: Devido ao caráter inédito da pesquisa no contexto neonatal, o conhecimento das ações realizadas poderá permitir a implantação de barreiras nas possíveis falhas existentes no processo, à luz dos dados analisados.
Interface entre saneamento ambiental e saÃºde: estudo participante com estudantes de enfermagem
Authors: Moniz Marcela de Abreu , Souza Ingrid da Silva , Bastos Mayara Pacheco da ConceiÃ§Ã£o , Pacheco Raila Neumann , Linhares Layla Correa , Dias Rayara Mozer
Published: July 2021

Objetivo: descrever a percepÃ§Ã£o de graduandos de enfermagem sobre a interface do saneamento ambiental com a saÃºde humana. MÃ©todo: Empregou-se o estudo participante, o World CafÃ© e a anÃ¡lise temÃ¡tica de conteÃºdo. Participaram 23 graduandos de enfermagem da Universidade Federal Fluminense, campus Rio das Ostras, no perÃ­odo de agosto de 2017 a maio de 2018. Resultados: A percepÃ§Ã£o limitada dos participantes sobre as dimensÃµes fÃ­sicas, biolÃ³gicas, toxicolÃ³gicas, sociais e polÃ­ticas que envolvem a relaÃ§Ã£o saneamento-saÃºde revela uma formaÃ§Ã£o dedicada ainda ao modelo biomÃ©dico e despolitizada das questÃµes socioambientais que repercutem na saÃºde. ConclusÃ£o: Constatou-se a importÃ¢ncia da educaÃ§Ã£o ambiental centrada nos estudantes e em metodologias ativas de aprendizagem, com vistas ao pensamento crÃ­tico e Ã  formaÃ§Ã£o de competÃªncias dos futuros enfermeiros para a realizaÃ§Ã£o de aÃ§Ãµes que reduzam as condiÃ§Ãµes de riscos Ã  saÃºde relacionadas ao saneamento ambiental.
2020 – Ano Internacional da Enfermagem: Desafios e Conquistas (e outros desafios)
Authors: Junior Osnir Claudiano da Silva
Published: July 2021

Análise sobre as comemorações do Ano Internacional da Enfermagem e a pandemia de COVID-19 no ano 2020. Os desafios e as respostas da enfermagem particularmente os relacionados à profissionalização da Enfermagem.
A liderança exemplar na perspectiva de enfermeiros do atendimento pré-hospitalar: estudo descritivo
Authors: Grivol Daniele Ellen , Bernardes Andrea , Moura André Almeida de , Zanetti Ariane Cristina Barboza , Gabriel Carmen Silvia
Published: July 2021

Objetivo: Identificar e analisar os aspectos relacionados às práticas da liderança exemplar na perspectiva dos enfermeiros do Serviço de Atendimento Móvel de Urgência (SAMU), distinguindo a autopercepção desses profissionais enquanto líderes e caracterizando a percepção da liderança exercida por enfermeiros integrantes de suas equipes. Método: Estudo descritivo, realizado com enfermeiros do SAMU Regional dos 26 municípios de um Departamento Regional de Saúde do interior de São Paulo. A coleta de dados ocorreu mediante aplicação das versões EU e OBSERVADOR do Leadership Practices Inventory (LPI). Resultados: Considerando as versões do LPI, as avaliações dos participantes atinentes ao comportamento do líder apresentaram diferenças mínimas em comparação com suas autoavaliações. Contudo, os respondentes se autoavaliaram positivamente na maior parte das práticas que delineiam a liderança exemplar. Conclusão: As práticas da liderança exemplar mostraram-se presentes no comportamento dos enfermeiros que atuavam no SAMU, despontando como competências imprescindíveis aos enfermeiros do atendimento pré-hospitalar.
Atenção à saúde às pessoas com sífilis: um estudo avaliativo
Authors: Santiago Janmilli da Costa Dantas , Silva Hosana Lourenço da , Lima Dhyanine Morais de , Araújo Andressa Kaline Ferreira , Moreira Olga Alice Alencar , Silva Richardson Augusto Rosendo da
Published: July 2021

OBJETIVO: A pesquisa tem como objetivo geral avaliar a atenção à saúde às pessoas com Sífilis no Estado do Rio Grande do Norte. MÉTODO: Trata-se de um estudo Avaliativo, na vertente de avaliação da estrutura, processo e resultados, com abordagem qualitativa, que será desenvolvido no Estado do RN. Participarão da pesquisa diretores das unidades regionais de saúde pública, gestores de maternidades públicas, coordenadores da atenção básica, diretores dos distritos de saúde da capital do Estado, profissionais da estratégia de saúde da família, usuários representantes do conselho municipal de saúde, responsáveis técnicos pelo agravo da sífilis à nível estadual e do município de Natal. Será aplicada uma entrevista semi-estruturada e a técnica do grupo focal. Os dados serão analisados através da técnica de análise de conteúdo, conforme Bardin. Utilizaremos o software IRAMUTEC.