bluuebunny/crossref_metadata_2025 huggingface dataset:
CASE REPORT: The impact of Plasma Exeresis after fillers complication on the lips
Authors: SIOUMAS T , SOTIRIOS MD G
Published: March 2021

The purpose of this article is to inform the medical audience about the treatment of difficult cases by implementing the Plasma Exeresis method. With the particular device of Plasma Exeresis the fourth state of matters, Plasma, is produced. In brief, Plasma Exeresis is a certified cordless micro-surgical hand-operated device. According to the histology results, Plasma Exeresis sublimates the epidermis without passing the membrane basal, shrinking the elastic fibers of the dermis, and produces collagen type III without the unwanted skin lesion. In particular, by using Plasma Exeresis with the above mechanism we are able to rectify the fibrosis and granules (and other medical lesions e.g. xanthelasmas, hemangioma, non-invasive blepharoplasty, papilloma, fibroma, benign tumors, etc.). Furthermore, it accelerates the damage repair, the wrinkles softening and the skin fibers regeneration. The case study discussed below can be characterized for its hard and challenging nature, bearing in mind that the damage was extensive. The patient was a woman, 55 years old, who had undergone an unsuccessful treatment in the past. The case takes place in Greece. The culprit was the application of lip fillers consisted of an unknown material. The adverse effects (granules) (See pictures below) were combined with depressive disorder which lasted for approximately 15 years. The granules were considered by many doctors (even plastic surgeons) insurmountable, however, the Plasma Exeresis method was eventually highly effective. Consequently, the Plasma Exeresis can be considered as an innovative method which can heal and restore problematic cases. Keywords: Plasma Exeresis: Fillers; Complication; Lips; Side Effects; Granules Hypothesis 1: Plasma Exeresis can cure difficult cases
Evidences for Adult Hippocampal Neurogenesis in Humans
Authors: Moreno-Jiménez Elena P. , Terreros-Roncal Julia , Flor-García Miguel , Rábano Alberto , Llorens-Martín María
Published: March 2021

The rodent hippocampus generates new neurons throughout life. This process, named adult hippocampal neurogenesis (AHN), is a striking form of neural plasticity that occurs in the brains of numerous mammalian species. Direct evidence of adult neurogenesis in humans has remained elusive, although the occurrence of this phenomenon in the human dentate gyrus has been demonstrated in seminal studies and recent research that have applied distinct approaches to birthdate newly generated neurons and to validate markers of adult-born neurons. Our data point to the persistence of AHN until the 10th decade of human life, as well as to marked impairments in this process in patients with Alzheimer's disease. Moreover, our work demonstrates that the methods used to process and analyze postmortem human brain samples can limit the detection of various markers of AHN to the point of making them undetectable. In this Dual Perspectives article, we highlight the critical methodological aspects that should be strictly controlled in human studies and the robust evidence that supports the occurrence of AHN in humans. We also put forward reasons that may account for current discrepancies on this topic. Finally, the unresolved questions and future challenges awaiting the field are highlighted.
IMPACTO ECONÓMICO DO PORTO DE FERROL – SAN CIBRAO: HARMONIZACIÓN DE RESULTADOS AO ANO DE REFERENCIA 2016 E COMPARACIÓN COS PORTOS ESTATAIS
Authors: De la Peña Zarzuelo Ignacio , López Bermúdez Beatriz , Freire Seoane María Jesús
Published: March 2021

As investigacións iniciadas nos anos 60 que tentan determinar o impactoeconómico dos portos nas economías da súa hinterland fóronse depurando, e asmetodoloxías foron converxendo ata permitir realizar comparacións entre uns portos eoutros. No sistema portuario español leváronse a cabo importantes estudos de impactoeconómico e, entre eles, destaca o do porto de Ferrol-San Cibrao, tanto polo carácterpioneiro como pola diversidade de enfoques, como polas metodoloxías que se utilizaronpara a súa determinación. Neste traballo, considéranse os estudos máis relevantes e, parao caso do porto de Ferrol-San Cibrao, harmonízanse os datos ao ano de referencia 2016 através dos coeficientes deflatores do PIB, e realízase unha análise comparativa conrespecto aos portos estatais de características semellantes.The research initiated in the 60s in an atempt to determine the economicimpact of ports in the economies of their hinterland have been refined, and themethodologies have been converging to allow comparisons between ports.In the Spanish port system, important economic impact studies have been carried out,including the port of Ferrol-San Cibrao, both for its pioneering nature and for the diversityof approaches and methodologies that have been used for its determination. In this paper,the most relevant studies are analyzed, the data are harmonized to the reference year2016 through the deflator coefficients of the GDP, and a comparison is made in relation tothe similar characteristic state ports.
EVOLUCIÓN NA XERACIÓN DE RESIDUOS AO LONGO DAS CADEAS DE SUBMINISTROS NAS ECONOMÍAS IBÉRICAS: ANÁLISE COMPARATIVA DE ESPAÑA E PORTUGAL
Authors: Ruiz-Peñalver Soraya , Marques da Costa Nuno , Queirós Margarida , Camacho José A.
Published: March 2021

Nas últimas décadas a xeración de residuos converteuse nun dos principaisproblemas medioambientais debido ao impacto que exerce unha incorrecta xestión dosmesmos sobre o medio natural. Perante este contexto, foise propagando unha maiorpreocupación ambiental na que a redución do volume de residuos é a súa principal premisa.No caso da Unión Europea (UE), o obxectivo da lexislación en materia de xestión de residuoscentrouse na prevención e na reciclaxe para tender cara un crecemento económico moitomáis sostible. Porén, e malia os logros acadados, é necesario seguir avanzando nesta liña xaque moitos membros, especialmente, os do Sur de Europa, aínda se afastan dos obxectivospropostos para 2020. Por iso, o obxectivo deste traballo é aplicar unha metodoloxía Análisede Ciclo de vida Input-Output (EIO-LCA nas súas siglas en inglés) para analizar o volume etipoloxía de residuos xerados directa e indirectamente en cada elo da cadea de subministrosdas actividades económicas de España e Portugal.In recent decades waste generation has become one of the main environmentalproblems due to the impact that an incorrect management exerts on nature. Consequently, agreater environmental awareness has been spreading so that waste reduction has become itsmain premise. In the case of the European Union (EU), the aim of the waste legislation isbased on prevention and recycling towards a more sustainable economic growth. However,despite the achievements, it is necessary to continue advancing in this line since manyMembers, especially those from Southern Europe, are still far away from the 2020 objectives.Therefore, the aim of this paper is to apply an Economic Input-Output Life Cycle Analysis(EIO-LCA) to analyze the volume and type of waste generated directly and indirectly in eachlink of the supply chain of the economic activities in Spain and Portugal.
O MUNDO DE HOXE: O SOÑO EUROPEO NA ENCRUCILLADA
Authors: PÉREZ TOURIÑO Emilio
Published: March 2021

Cando a CEE daba os seus primeiros pasos -apenas discorrida unha década dende asinatura do Tratado de Roma-, abría as súas portas en Santiago de Compostela a facultadede Económicas da universidade galega, de cuxa primeira promoción tiven a sorte e asatisfacción de formar parte. En España estabamos en plena ditadura, e Europa e oproxecto europeo representaban un ideal e a esperanza de liberdade e de modernidadepara a mocidade daquela xeración.Pero, a necesidade de abrir portas e fiestras a Europa era unha aspiración que viña de moilonxe. Xa estaba contida naquela proclama reivindicativa da primeira asamblea deprodutores agrarios: “queremos respirar o ar de Europa”, impulsada nos inicios do séculodezanove por Joaquín Costa, aquele ilustre pensador social inspirador doRexeneracionismo e autor dea obra “ Oligarquía e caciquismo agrario”, que aprendemos aler naqueles anos de facultade. Tamén estaba xa na idea de Ortega y Gasset sintetizada nasúa memorable frase “España é o problema e Europa a solución”.Pero o illamento e o ensimesmamento propios da España da Restauración Canovista, cosseus aranceis e políticas proteccionistas -sustentadas polos pactos entre os ferreteirosvascos, o téxtil catalán e o latifundio castelán e andaluz-, chegarían ao paroxismo coaautarquía característica do rexime xurdido da rebelión militar de 1936. Pódese afirmar,pois, que a extraordinaria transcendencia – económica, social e política- da entrada deEspaña na CEE, a súa dimensión histórica, explícase polo feito de que con ela se pon fin áfrustración de séculos producida polo illamento e separación de Europa.Dende a caída do Imperio Romano, Europa viviu sempre no medio do enfrontamento e dafragmentación de nacións, grupos étnicos e relixiosos. A relativa confianza e seguridadepropios dos últimos anos do século dezanove en Europa, e o optimismo que caracteriza áprimeira década do século vinte, coincidindo coa primeira onda globalizadora, cocrecemento económico e do comercio -tal e como analiza maxistralmente Tony Judt na súaHistoria de Europa-, non ían durar moito e ían suceder, en moi pouco tempo, aos peoresacontecementos da historia da Europa moderna.
OS INCENDIOS FORESTAIS E O SEU SU IMPACTO ECONÓMICO: PROPOSTA PARA UNHA AXENDA INVESTIGADORA
Authors: LOUREIRO Maria L. , ALLÓ Maria
Published: March 2021

Os incendios forestais son un dos maiores problemas ambientais aos que se está a afrontaro sur de Europa dada a virulencia que están a alcanzar nestes últimos anos. Ante estasituación, é importante levar a cabo unha valoración económica de alcance, que considereademáis dos custos directos o impacto sufrido como consecuencia da perda dos servizosecosistémicos forestais. Este punto é de vital importancia, posto que dita estimaciónaxudará a reclamar unha correcta compensación para as comunidades afectadas. Tamén, ásúa vez dita estimación constitúe unha información útil para a xestión e priorización deaccións de defensa contra incendios. O obxectivo deste pequeno artigo é presentar asclasificacións máis relevantes existentes en canto aos danos dos servizos ecosistémicosperdidos, destacando as últimas metodoloxías dispoñibles e amosando a través dun caso deestudo concreto, a importancia de considerar a valoración económica deste tipo de perdas.
Simulation-Based Neonatal Resuscitation Team Training: A Systematic Review
Authors: Lindhard Morten Søndergaard , Thim Signe , Laursen Henrik Sehested , Schram Anders Wester , Paltved Charlotte , Henriksen Tine Brink
Published: March 2021

CONTEXT:

Several neonatal simulation-training programs have been deployed during the last decade, and in a growing number of studies, researchers have investigated the effects of simulation-based team training. This body of evidence remains to be compiled.

OBJECTIVE:

We performed a systematic review of the effects of simulation-based team training on clinical performance and patient outcome.

DATA SOURCES:

Medline, Embase, Cumulative Index to Nursing and Allied Health Literature, and the Cochrane Library.

STUDY SELECTION:

Two authors included studies of team training in critical neonatal situations with reported outcomes on clinical performance and patient outcome.

DATA EXTRACTION:

Two authors extracted data using a predefined template and assessed risk of bias using the Cochrane risk-of-bias tool 2.0 and the Newcastle-Ottawa quality assessment scale.

RESULTS:

We screened 1434 titles and abstracts, evaluated 173 full texts for eligibility, and included 24 studies. We identified only 2 studies with neonatal mortality outcomes, and no conclusion could be reached regarding the effects of simulation training in developed countries. Considering clinical performance, randomized studies revealed improved team performance in simulated re-evaluations 3 to 6 months after the intervention.

LIMITATIONS:

Meta-analysis was impossible because of heterogenous interventions and outcomes. Kirkpatrick’s model for evaluating training programs provided the framework for a narrative synthesis. Most included studies had significant methodologic limitations.

CONCLUSIONS:

Simulation-based team training in neonatal resuscitation improves team performance and technical performance in simulation-based evaluations 3 to 6 months later. The current evidence was insufficient to conclude on neonatal mortality after simulation-based team training because no studies were available from developed countries. In future work, researchers should include patient outcomes or clinical proxies of treatment quality whenever possible.
Partial stability of linear systems with respect to a given component of the phase vector
Authors: Nikonov Vladimir I.
Published: March 2021

A new geometric approach to the study of the partial stability of linear systems is proposed, which is based on the application of the geometric theory of linear operators. Using the theory of conjugate spaces and conjugate linear operators, bases are constructed in which the system under study takes the canonical form. A cyclic subspace with respect to the conjugate linear operator is considered. A basis is constructed for the dual space of a linear operator, in which its matrix takes the canonical form. This basis corresponds to the dual basis of the original linear space. Then, in a pair of bases of dual spaces the system under study takes the simplest form. The geometric properties of the system are realized using a non-singular linear transformation in the space of a part of the components of the system’s phase vector. This allows us to decompose the system under study in order to obtain necessary and sufficient conditions for the partial stability of the linear system. In an equivalent system, an independent subsystem is distinguished, whose nature of stability determines the behavior of the investigated component of the original system’s phase vector. The relationship between the partial stability of the system and the existence of an invariant subspace of a linear operator characterizing the dynamics of the system is established. The canonical form of the resulting subsystem makes it easy to exclude auxiliary variables and write an equation equivalent to this system. The application of the obtained results to the solution of the problem of partial stability for linear systems with constant coefficients belonging to the classes of ordinary differential equations, discrete systems and systems with deviating argument is shown. An example of a linear system of differential equations is given to illustrate the result obtained.
Assessment of Winter Wheat Plant Development during the Seeding and Tillering Stages According to the Earth Remote Sensing Data
Authors: Storchak Irina G. , Eroshenko Fedor V. , Oganyan Lusine R. , Shestakova Elena O. , Kalashnikova Anastasiya A.
Published: March 2021

Introduction. The importance of controlling the organogenesis stages is that it provides the opportunity to create favorable conditions during the development of certain elements of the yield structure by caring crops and influence the grain quality. The objective of the work is to define a connection between the Earth remote sensing data and the state of winter wheat plants in the initial period of their growth and development.
Materials and Methods. The object of the study was the winter wheat plantings. The wheat varieties “Odisseya”, “Olympus”, “Niva Stavropolya”, “Victoria 11”, “Nastya” and “Firuza 40” were sown by plot in the experimental field. The industrial crops of winter wheat were studied to assess the state of the plants in the tillering stage in 2012–2013, 2013–2014 and 2015–2016 agricultural years. The Earth remote sensing data were obtained using the “VEGA” service of FBSI “Space Research Institute of the Russian Academy of Sciences”. Results. The obtained function of the dependence of NDVI of winter wheat crops on the height and development stage of plants is a polynomial of the third degree and is characterized by high accuracy (Rcorr = 0.98). The analysis of the NDVI, RED and NIR data of fields on dates close to the dates of collecting plant samples showed a considerable degree of relationship between the vegetation index NDVI and height of winter wheat plants. In 2013, the correlation coefficient was 0.60, in 2014 – 0.66, in 2016 – 0.80, and in 2013–2016 on average about 0.85.
Discussion and Conclusion. The studies have shown that the Earth remote sensing data can be used to assess the state and degree of the development of winter wheat crops during the seeding and tillering stages, including in the production conditions. To improve the accuracy of the assessment, it is better to use the spectral brightness values in the infrared region of the spectrum.
Modeling the Effect of Fertilizers on the Dynamics of Moisture Contours at Drip Irrigation
Authors: Uspensky Ivan A. , Fadeev Ivan V. , Alekseev Victor V. , Filippov Vladimir P.
Published: March 2021

Introduction. A review of research on modeling and calculating moisture contours shows that at this stage there is a developed formalized mathematical apparatus connecting physically reasonable parameters and hydro-physical properties of soils. However, to improve the efficiency of drip irrigation and fertigation, it is necessary to determine the effect of fertilizers dissolved in irrigation water on hydrophysic properties of soil, and on the basis of the findings to determine the effect of fertilizers on shapes and sizes of moisture contours.
Materials and Methods. To investigate the effect of fertilizers on the dynamics of moisture contours, potassium monophosphate was used, because it has a “bad” mobility in soil and it is cost-efficient to be introduced into irrigation water. Potassium monophosphate effects on density, viscosity, osmotic pressure, moisture contact angle and surface tension of irrigation water. As a result, there are changes in soil water retention curve and its hydraulic conductivity function. Therefore, moisture contours are formed with small, but still significant differences.
Results. A software tool has been developed that allows exploring the dynamics of the moisture contours of different soil types and texture with different porosity and with a previously known moisture distribution in depth.
Discussion and Сonclusion. When potassium monophosphate or other nutrients are added to water, small changes of the formation of moisture contours are observed. The results obtained enable us to calculate irrigation norms at the design stage of the planning process of fertilizer distribution with irrigation water during drip irrigation for different concentrations.
Etiological structure of acute gastrointestinal infections in children and analysis of their clinical features depending on etiology
Authors:   Shupyk National Medical Academy of Postgraduate Education, Kуiv, Ukraine, Teslenko M.Yu. ,   LLC Medical center «Dobrobut-clinic», Kyiv, Ukraine,   Kyiv regional children's hospital No. 1, Ukraine
Published: March 2021

Acute gastroenteritis (AGE) often causes different complications in younger children, which can lead to hospital admission. Purpose — to explore the etiological structure of infectious gastroenteritis in children under 5 years and severity clinical features of the disease depending on the pathogen. Materials and methods. 978 children with AGE were enrolled in the study. The age of participants was 0–5 years, they all were patients of infectious diseases department of Kyiv city children's hospital No.1 during 2014–2018 years. The division into groups was based on the detected pathogen. Determination of rotavirus antigen was performed by enzyme$linked immunosorbent assay (ELISA), other pathogens were identified by nucleic acid extraction and testing by TAC (TaqMan Array Cards). The clinical features severity according to Vesicari's scale were analyzed during the study. Results. Among children who were enrolled in the study the most common pathogen was rotavirus, which was present in 47% of all cases. Norovirus took the second place. Campylobacter was the most common among bacterial pathogens. Rotavirus was more common among children of older age group. Shigella and Campylobacter were two the most common pathogens in younger age group. In group non-rotavirus pathogens the most common were mild and moderate course of the disease, but in group with rotavirus mild course wasn't common. None of children with adenoviral or noroviral infection had mild disease. The most part of AGEs caused by bacterial pathogens had severe course. Conclusions. The leadership of rotavirus infection and an important change in the majority of infections, the introduction of vaccination into the national calendar is highly relevant. Norovirus took the second place in etiological structure of AGE after rotavirus, and that's why developing vaccine against it is an actual problem. According to severity of disease depending on the pathogen, the biggest value for prophylaxis will have development of vaccines against salmonellosis, norovirus and adenovirus. The research was carried out in accordance with the principles of the Helsinki Declaration. The study protocol was approved by the Local Ethics Committee of these Institutes. The informed consent of the patient was obtained for conducting the studies. No conflict of interest was declared by the authors. Key words: causative agents of acute gastroenteritis, rotavirus, noravirus, severity.
Predictive value of serum NT-proBNP concentrations for assessment hemodynamically significant patent ductus arteriosus in very preterm infants
Authors:   Danylo Halytskyy Lviv National Medical University, Ukraine, Potsiurko S.O. , Dobryanskyy D.O. ,   Danylo Halytskyy Lviv National Medical University, Ukraine, Sekretar L.B. ,   Danylo Halytskyy Lviv National Medical University, Ukraine
Published: March 2021

Hemodynamically significant patent ductus arteriosus (PDA) is a common complication in very preterm infants born at less than 32 weeks of gestation. At the same time, currently, there are no uniform criteria to identify the actual hemodynamic significance of PDA and generally accepted management approaches to such infants. Purpose — to assess the predictive value of serum N-terminal pro-brain natriuretic peptide (NT-proBNP) levels for hemodynamically significant PDA in very preterm infants. Materials and methods. Fifty-two preterm infants with gestational age <32 weeks, chronological age <72 h, and PDA diameter >1.5 mm were involved in a randomized study. Twenty-seven (52%) of them were treated with ibuprofen or paracetamol starting within the first 3 days of life. Expectant management was applied to 25 (48%) infants. All patients underwent daily echocardiographic and two serum NT-proBNP measurements within the first 10 days after birth. According to the results of echocardiographic and clinical monitoring, 2 groups of patients were formed retrospectively. In 22 (42%) of them hemodynamically significant PDA (hsPDA) was diagnosed, and 30 (58%) had hemodynamically insignificant ductus arteriosus. Results. The percentage of infants who received pharmacological PDA treatment was not significantly different between the groups (p>0.05). Serum NT-proBNP concentrations at the median age of 2 and 8 days were significantly higher in infants with hsPDA (p<0.01). By the eighth day of life, the NT-proBNP level in both groups significantly decreased but remained considerably higher in newborns with hsPDA. Serum NT-proBNP concentrations on the second-third day of life could reliably predict hsPDA (AUC=0.93; 95% confidence interval: 0.86–1.0; p<0.05). Conclusions. Serum NT-proBNP concentrations on the second day of life >12000 pg/ml could reliably predict hsPDA. The research was carried out in accordance with the principles of the Helsinki Declaration. The study protocol was approved by the Local Ethics Committee of these Institutes. The informed consent of the patient was obtained for conducting the studies. No conflict of interest was declared by the authors. Key words: hemodynamically significant patent ductus arteriosus, PDA, NT-proBNP, prognostic value, very preterm infants.
Structure forming and managing of properties of phosphorous cast irons for parts of internal combustion engine
Authors: Slynko G. , Slynko V.
Published: March 2021

Purpose. Improving the mechanical and operational properties of details of internal combustion engines by managing the structure formation of phosphorous cast irons.

Research methods. Graphitized and bleached phosphorous cast irons with lamellar and globular graphite of laboratory and industrial melts, melted in electric induction furnaces with alloying modification and fractional casting into dry sand molds were investigated. Chemical composition, microstructure, physical and mechanical properties were determined using standard methods. Non-destructive quality control of engine parts, statistical analysis of experimental data and deterministic factor analysis of the influence of structural components on the properties of the cast irons were carried out according to the methods developed with the participation of the authors. Bench and road motor tests of optimal composition cast irons details were carried out in engines according to standard and factory methods in accordance with state standards.

Obtained results. The general laws and principles of the formation of the microstructure of cast irons with lamellar and nodular graphite are determined depending on the degree of their alloying with phosphorus and the influence of the scale factor. It has been established that phosphide eutectic in an amount of up to 5.8 % is a strengthening structural component and increases strength, hardness, wear resistance, heat resistance, and machin-ability of phosphorous cast irons with blade tools. The negative effect of phosphide eutectic on plastic properties and cyclic fracture toughness is less significant than the effect of increasing amounts of ferrite, its grain size and graphite. Optimal chemical compositions and microstructures of phosphorous cast irons for internal combustion engines details are recommended.

Scientific novelty. For the first time, a comprehensive system for managing the properties of phosphorous cast irons has been developed, including the analytical determination of the required characteristics of structural components and the technology for their production.

Practical value. Methods and technologies for melting, alloying, modifying, heat treatment and surface hardening of phosphorous cast irons have been developed. They make it possible to provide the required level of mechanical and operational properties of internal combustion engines details.
Mathematical simulation of welded deposit layers as for adaptation of materials to failure in quasidissipative tribosystems
Authors: Popov S. , Shumykin S. , Laptieva Н.
Published: March 2021

Purpose. To establish mathematical models for the adaptation of materials under conditions of activation of a metastable structural-phase state of quasi-dissipative tribosystems. Determination and substantiation of factors for planning an active experiment due to which it is possible to create mathematical models of stable forecasts for increasing the wear resistance of materials.
Research methods. When conducting the experiments, a priori data were used in combination with our own scientific developments of mathematical models of the dependences of the influence of the chemical composition of alloys during manual and automatic electric arc surfacing on the physical and mechanical properties of the surface layer of the material, which is destroyed under tribosystem conditions. It was decided to use mathematical planning of research on the basis of an active experiment with the creation of models for the numerical description of the mathematical expectation in the form of regression equations.
Obtained results. On the basis of theoretical and practical scientific research with planning a passive and active experiment, a set of relevant knowledge has been obtained, which makes it possible to determine the main criterion requirements for the sensitivity of deposited steels and alloys to adaptation under the action of external mechanical and energy influences and allows to mathematically describe the characteristics of the alloy and provide a numeri­cal estimate of the correlation parameters among themselves. On the basis of the theory of scientific mathematical planning of the experiment, a set of corresponding experiments was carried out, which made it possible to build spatial graphic models.
Scientific novelty. For the first time, theoretical and practical scientific research is presented with the reproduction of a systemic multivariate analysis of the parameters of mathematical models and processes leading to the martensitic ( γ → α ) transformation and determines the substantiation of the chemical composition of the deposited materials to increase fracture resistance under conditions of quasi-dissipative and dissipative tribosystems.
Practical meaning. The obtained results of the above studies allow, within the framework of technical and technological accuracy, which is necessary within the framework of practical engineering forecasts, to determine the physical and mechanical properties of wear-resistant deposited alloys under conditions of quasi-dissipative and dissipative tribosystems.
Research of technology of manufacturing of steeply curved bends
Authors: Lenok А. , Obdul V. , Vinovets O.
Published: March 2021

Purpose of work. Investigation of the features of the technological process of manufacturing curvilinear sections of the pipeline – steeply curved bends.

Research methods. Three-dimensional modeling of a design of equipment and a finished product; experimental studies of the technology of manufacturing steeply curved bends by pushing through a curved hole of the assembly matrix without using fillers; estimation of deformation by the method of dividing grids.

Obtained results. Literary sources are analyzed and the main problems arising in the manufacture of steeply curved bends for each method are identified. To study the features of the manufacturing technology, a three-dimen­sional model of the assembly matrix was modeled using the investigated method, the design, dimensions and material of the tooling were selected. Equipment was made. Sizes and material of pipe billets were selected. The operations of the technology for the manufacture of steeply curved bends by pushing through a curved hole of the assembly matrix without the use of fillers were determined.

Experimental studies of the technology have been carried out. For this, the manufactured stamp was installed on a PG-100A hydraulic press. Pipe billets were placed in a guide sleeve, which was screwed to the assembly die when the press rod was placed in the upper position. The punch pushed the pipe billet along the curved hole of the assembly matrix while moving the rod down. Upon completion of the pushing process, the press rod was in the upper position. For unimpeded removal of the finished product, the guide sleeve was removed, the matrix was unscrewed and removed from the clamps.

Several samples were obtained, the presence of defects and problems that arose during the formation of steeply curved bends were revealed. To assess the deformation, the method of dividing grids was used.

Scientific novelty. The method of manufacturing steeply curved bends by pushing an assembly matrix through a curved hole was further developed. The peculiarity of the investigated technology - rejection of the use of expensive filler or rigid mandrels, reduction of technological operations and time for manufacturing a unit of a finished product. As a result of the study, dangerous zones of pipe billets in the process of manufacturing steeply curved bends were identified: the place of bending (crushing, corrugation, rupture) and the ends of the finished product at the exit (ovalization, distortion, breaks).

Practical value. To prevent the occurrence of dangerous zones during deformation of pipe billets and improve the quality of the finished products obtained, requirements were formulated for the design of the working elements of the developed stamp, the choice of optimal modes of the shaping process, the material and the optimal shape of the pipe billet.
Rethinking Streets for Physical Distancing
Authors:   University of Oregon, Schlossberg Marc , Lewis Rebecca ,   University of Oregon, Whalen Aliza ,   University of Oregon, Haley Clare ,   University of Oregon, Lewis Danielle ,   University of Oregon, Kataoka Natalie ,   University of Oregon, Larson-Friend John ,   University of Oregon
Published: March 2021

This report summarizes the primary output of this project, a book of COVID-era street reconfiguration case studies called Rethinking Streets During COVID-19: An Evidence-Based Guide to 25 Quick Redesigns for Physical Distancing, Public Use, and Spatial Equity. COVID-era needs have accelerated the process that many communities use to make street transformations due to: a need to remain physically distanced from others outside our immediate household; a need for more outdoor space close to home in every part of every community to access and enjoy; a need for more space to provide efficient mobility for essential workers in particular; and a need for more space for local businesses as they try to remain open safely. This project is the third in a series of NITC-supported case study books on best practices in street reconfigurations for more active, sustainable, and in this case, COVID-supportive uses. The full, 154-page book is available for free download from the National Institute for Transportation and Communities (NITC).
Comparative analysis of X-ray fluorescence methods for elemental composition determination of the archaeological ceramics from low sample quantity
Authors:   Institute of the Eatrh’s Crust, Pashkova G. V. ,   Irkutsk State University, Mukhamedova M. M. ,   Institute of the Eatrh’s Crust,   Irkutsk State University, Chubarov V. M. ,   Institute of the Eatrh’s Crust, SB RAS,   Vinogradov Institute of Geochemistry, SB RAS, Maltsev A. S. ,   Institute of the Eatrh’s Crust, SB RAS,   Irkutsk National Research Technical University, Amosova A. A. ,   Vinogradov Institute of Geochemistry, SB RAS, Demonterova E. I. ,   Institute of the Eatrh’s Crust, SB RAS, Mikheeva E. A. ,   Institute of the Eatrh’s Crust, SB RAS, Shergin D. L. ,   Institute of the Eatrh’s Crust, SB RAS,   Irkutsk State University,   Irkutsk Regional Museum of Local Lore, Pellinen V. A. ,   Institute of the Eatrh’s Crust, SB RAS, Teten'kin A. V. ,   Institute of the Eatrh’s Crust, SB RAS,   Irkutsk National Research Technical University
Published: March 2021

Wavelength-dispersive X-ray fluorescence analysis (WDXRF) and total-reflection X-ray fluorescence (TXRF) analysis were applied to study the elemental composition of the Late Neolithic ancient ceramics collected at the Popovsky Lug burial site (Kachug, Upper Lena river, Russia). Semi-quantitative non-destructive analysis of ceramic pieces showed that measurements of the upper and lower sides of the ceramic are less informative than the measurement of its cut. Various sample preparation techniques for the low quantity of crushed ceramics such as fusion, pressing and preparation of suspensions were compared to preserve the material. Samples were prepared as 150 mg fused beads and 250 mg pressed pellets for WDXRF, and as suspensions of 20 mg sample based on the aqueous solution of the Triton X-100 surfactant for TXRF. Certified methods were used to validate the obtained contents of rock-forming oxides and inductively coupled plasma mass spectrometry was used to confirm the results of trace elements determination. Based on the carried-out studies, a combination of the wavelength-dispersive X-ray fluorescence analysis (glass) and total-reflection X-ray fluorescence analysis (suspension) methods was chosen to obtain the data on the elemental bulk composition of archaeological ceramics. The proposed combination allowed the quantitative determination of Na, Mg, Al, Si, P, K, Ca, Ti, Mn, Fe, V, Cr, Ni, Cu, Zn, Ga, Rb, Sr, Y, Zr, Pb, and Ba from the sample of crushed ceramics weighing only about 170 mg.
Determination of polymeric functional additives in diesel fuel by gel penetration chromatography
Authors:   Kuban State University (KubSU), Ivanova Yu. A. , Temerdashev Z. A. ,   Kuban State University (KubSU), Kolychev I. A. ,   Gazprom Transgaz Krasnodar, Kiseleva N. V. ,   Kuban State University
Published: March 2021

Current article is devoted to the development of a method for determining polymer functional additives and their molecular weight characteristics in diesel fuel by gel penetration chromatography. The objects of the study were solutions of “C5A”, “Maxoil D”, “Detersol”, polymethymethacrylate “D” (PMAD), “Keropur D ”, Antigel “Difron 3319” and “Superantigel” individual additives as well as the diesel fuel produced by the “Kuban Oil and Gas Company - Ilskiy Oil Refinery”, LLC. The conditions for chromatographic separation and determination of polymeric functional additives were determined considering the analyzed fuel matrix, the working range of the separated masses and molecular weights of analytes, and the composition of the eluent applicable for wide range of analytes. The chromatographic system was calibrated using the narrowly dispersed analytical standard polystyrene samples with molecular weights of 1000, 2000, 4000, 10000, 30,000, 50,000, and 70,000 Da respectively. The molecular weight characteristics were calculated for each functional additive from the analytical standard samples of polystyrene. The method of GPC determination of polymeric functional additives in diesel fuel, along with the concentration characteristics, also makes it possible to determine the molecular weight parameters of wide range of polymeric functional additives; therefore, it is promising for monitoring the quality of the diesel fuel. The proposed analytical scheme was tested in the analysis of real sample of diesel fuel. The GPC scheme for the determination of the “Keroflux 3699” depressant-dispersant additive in diesel fuel included sample preparation using the solid-phase extraction, calibration of the chromatographic system using the standard polystyrene samples, GPC determination of additive components, and the calculation of molecular weight characteristics. The molecular weight characteristics of the “Keroflux 3699” depressant dispersant additive in diesel fuel have been established - the number average and weight average molecular weights equivalent to polystyrene were 10,300 and 8800 Da respectively, and the polydispersity index of the additive was 1.17.
Participatory health education on school (re)inclusion of the adolescent cancer survivor
Authors: Braga Tátilla Rangel Lobo , Mattos Camille Xavier de , Cabral Ivone Evangelista
Published: March 2021

ABSTRACT Objectives: to analyze school (re)inclusion of an adolescent cancer survivor before/after participatory health education with adolescents. Methods: qualitative and participatory research that included data from the medical record of an adolescent rhabdomyosarcoma survivor and Talking Map dynamics (to diagnose the demand for learning and assess changes). The body-knowledge dynamics were applied in the educational intervention. In a public school in Rio de Janeiro, the adolescent (reference case) and nine people (four teachers and five teenagers) generated empirical materials, which became the content analysis objects. Results: strangeness to changes in an adolescent cancer survivor’s body image, bullying, and acceptance were problematized in educational body-knowledge dynamics through relationships between changes and barriers to welcoming. The participatory educational process was essential in raising awareness by promoting re-inclusive actions. Conclusions: participatory-problematizing education contributed to constructing a new collective identity and improvement in school interaction among peers.
Experiences, dietary behavior and cultural characteristics of people with colorectal neoplasms
Authors: Correa Júnior Antonio Jorge Silva , Sonobe Helena Megumi , Teles André Aparecido da Silva , Neves Wagner Felipe dos Santos , Santana Mary Elizabeth de
Published: March 2021

ABSTRACT Objectives: to interpret the socio-cultural, religious, and spiritual aspects of the experience of people who have colorectal cancer and were submitted to surgical treatment with ostomy. Methods: ethnographic study under the perspective of the Sociology of Health, in the comprehensive aspect, in a surgical unit of an oncologic hospital of the state of Pará, Brazil. Eighteen deponents participated, eleven patients, and seven caregivers, between December 2018 and March 2019. Data were obtained with non-participant observation, field diary records, and semi-structured interviews with subsequent inductive content analysis. Results: religious attachment and socio-cultural aspects of the illness were interpreted, emphasizing the social fact of the Immediate Dream, emotional shock, modern totemism, toxic food as taboo, and medicalization in the sphere of common sense and biomedical system. Final Considerations: microsocial and macrosocial factors of the participants’ experiences contribute to the qualification of oncologic assistance in the public system, assuming the need for specialized interprofessional assistance.
Knowledge and practices of Primary Care professionals on diabetic neuropathy: study of social representations
Authors: Andrade Erlon Gabriel Rego de , Rodrigues Ivaneide Leal Ataíde , Braga Sidney de Assis da Serra , Nogueira Laura Maria Vidal , Panarra Bruna Alessandra Costa e Silva , Santos Marcandra Nogueira de Almeida , Pereira Alexandre Aguiar
Published: March 2021

ABSTRACT Objectives: to analyze the knowledge and practices of Primary Health Care professionals about diabetic neuropathy through their social representations. Methods: a qualitative, descriptive study, anchored in the procedural aspect of the Theory of Social Representations. It was carried out in four Family Health Units in Belém-Pará, with 31 professionals from four health teams. Data were produced by individual semi-structured interviews, and the corpus was submitted to content analysis. Results: two thematic categories were defined, showing the participants’ understanding and imagination about neuropathy, as well as the biopsychosocial repercussions of this complication in patients’ daily lives. The multidisciplinary practices developed in the context of disease treatment/prevention and the consequences of this performance were also shown. Final Considerations: professionals’ representations are anchored in neuropathy occurrence due to the deficient standard of care for themselves by patients, which results in the team’s surpassing care attitude as an alternative to illness’ challenges.
Content and usability validation of the Retire with Health web software
Authors: Pissinati Paloma de Souza Cavalcante , Évora Yolanda Dora Martinez , Marcon Sonia Silva , Mathias Thais Aidar de Freitas , Fonseca Ligia Fahl , Haddad Maria do Carmo Fernandez Lourenço
Published: March 2021

ABSTRACT Objectives: to validate the content and usability of the Retire with Health web software. Methods: a methodological study. The content validation was carried out by seven experts in the aging subject, using an instrument that evaluated the objectives, contents, relevance, and the environment of the web software. Usability was validated by seven experts in software development, referring to ergonomics, functionality, usability, and efficiency. The data were submitted to statistical analysis, described by calculating the Content Validity Index. Results: the global Content Validity Index found 0.97 for the usability aspects and 1.00 for the content. After incorporating all the experts’ suggestions, the Retire with Health web software was made available on the internet (www.aposentarsecomsaude.com.br). Conclusions: content validation and usability showed that the web software meets the objective of supporting reflection on retirement, with a high level of agreement among experts.
Medication time out as a strategy for patient safety: reducing medication errors
Authors: Santos Laís Lima , Camerini Flávia Giron , Fassarella Cíntia Silva , Almeida Luana Ferreira de , Setta Daniel Xavier de Brito , Radighieri Adriana Raineri
Published: March 2021

ABSTRACT Objectives: to analyze the implementation of the medication time out strategy to reduce medication errors. Methods: this is a quantitative, cross-sectional, inferential study, with direct observation of the implementation of the medication time out strategy, carried out in a cardiac intensive care unit of a university hospital in Rio de Janeiro. Results: 234 prescriptions with 2,799 medications were observed. Of the prescriptions analyzed, 143 (61%) had at least one change with the use of the strategy. In the prescriptions altered, 290 medications had some type of change, and 104 (35.9%) changes were related to potentially harmful medication. During the application of the strategy, prescriptions with polypharmacy had 1.8 times greater chance of presenting an error (p-value = 0.031), which reinforces the importance of the strategy for prescriptions with multiple medications. Conclusions: the implementation of the medication time out strategy contributed to the interception of a high number of medication errors, using few human and material resources.
Health personnel, family relationships and codependency of psychoactive substances: a phenomenological approach
Authors: Dias Leone Mendes , Alves Marcelo da Silva , Pereira Maria Odete , Melo Laércio Deleon de , Assis Camila Cristina Gregório de , Spindola Thelma
Published: March 2021

ABSTRACT Objectives: to reflect on the daily life of family members dependent on psychoactive substances and the role of health professionals in Primary Care. Methods: a descriptive investigation outlined in Maffesoli’s phenomenological approach, carried out at a Basic Health Unit in Minas Gerais with eight family members dependent on psychoactive substances. Sociodemographic characterization data and in-depth interviews were collected and analyzed with support of NVivo Pro11® software. All ethical and legal aspects were met. Results: physicians were the professionals most mentioned in participants’ statements, who took on a dubious role with other health professionals: welcoming (positive perceptions about care received) and neglect (negative perceptions). Final Considerations: dependence on psychoactive substances imposes a burden on persons, their family members and health professionals. The role of establishing good relationships in the triad professionals-users-family members of primary care is inseparable in favor of treatment and preservation of their mental health.