bluuebunny/crossref_metadata_2025 huggingface dataset:
Isolation and characterization of staphylococcus aureus from two large-scale food poisoning outbreaks in Vietnam
Authors:   Vietnam Food Administration, 1135 Pho Nui Truc, Giang Vo, Ba Dinh, Hanoi, Vietnam, Hung Lam Quoc , Nguyen Huong Minh ,   nstitute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, CauGiay, Hanoi, Vietnam, Yen Ta Thi ,   National Institute for food control, NIFC-Vietnam, 65 Pham Than Duat, Hanoi, Vietnam, Hoa Le Vinh ,   National Institute for food control, NIFC-Vietnam, 65 Pham Than Duat, Hanoi, Vietnam, Ba Tran Hong ,   National Institute for food control, NIFC-Vietnam, 65 Pham Than Duat, Hanoi, Vietnam, Quyen Pham Le ,   National Institute for food control, NIFC-Vietnam, 65 Pham Than Duat, Hanoi, Vietnam,   Quang Binh Center for Disease Control and Prevention, 3150 Rampart Road, Fort Collins, USA, Huong Do Thi Thu ,   National Agro-Forestry Fisheries Quality Assurance Department, 10 Nguyen Kong Hoan, Ba Đình, Hanoi, Vietnam, Trung Nguyen Thanh ,   National Institute for food control, NIFC-Vietnam, 65 Pham Than Duat, Hanoi, Vietnam, Hao Le Thi Hong ,   National Institute for food control, NIFC-Vietnam, 65 Pham Than Duat, Hanoi, Vietnam
Published: October 2020

In Vietnam and around the world, Staphylococcus aureus remains a major hazard of food safety and food poisoning. S. aureus is present in many places and easily contaminates food production during processing chains. In this study, we successfully isolated S. aureus strains from suspected samples of two food borne poisoning outbreaks in Ha Giang and Vinh Phuc in 2017 and 2018, respectively. The collected samples were examined for presence of staphylococcal enterotoxins (SEs) by using 3MTMTECRATM Staph Enterotoxin kit, from there all the samples were positive with SEs. Different strains of S. aureus were isolated and then confirmed by MALDI-TOF technique. Those strains then were stored in Brain heart solution with 15% glycerol until further analysis. Our results identified three STs, ST96, ST88 (spa type t7558), and ST72 (spa type t3092), were responsible for two outbreaks. Two virulence genes detected from the above strains were sea and sec. Furthermore, these strains are test for antibiotic resistance susceptibility with commonly antibiotics. Penicillin are found to be resisted by all three STs, in particularly, ST96 and ST88 are both resistant to erythromycin while ST72 is resistant to gentamicin. Taken together, our study highlights the usefulness of molecular characterization to study and monitor bacterial pathogens associated with food poisoning outbreaks in Vietnam.
Up-to-date techniques for examining safety and physiological efficiency of industrial exoskeletons
Authors:   Izmerov's Research Institute of Occupational Health, 31 Budennogo Ave., Moscow, 105275, Russian Federation, Geregei A.M. , Shitova E.S. ,   Izmerov's Research Institute of Occupational Health, 31 Budennogo Ave., Moscow, 105275, Russian Federation, Malakhova I.S. ,   Izmerov's Research Institute of Occupational Health, 31 Budennogo Ave., Moscow, 105275, Russian Federation, Shuporin E.S. ,   Izmerov's Research Institute of Occupational Health, 31 Budennogo Ave., Moscow, 105275, Russian Federation, Bondaruk E.V. ,   Izmerov's Research Institute of Occupational Health, 31 Budennogo Ave., Moscow, 105275, Russian Federation, Efimov A.R. ,   Public Joint Stock Company «Sberbank of Russia», 19 Vavilova Str., Moscow, 117997, Russian Federation, Takh V.Kh. ,   Public Joint Stock Company «Sberbank of Russia», 19 Vavilova Str., Moscow, 117997, Russian Federation
Published: October 2020

Occupational morbidity caused by physical overloads and certain organs and systems being overstrained ranks second among occupational pathologies depending on an influencing adverse occupational factor. Given that, it seems vital and promising to develop industrial exoskeletons as they are able to protect a worker’s musculoskeletal system from excessive physical loads. And absence of a relative regulatory and technologic base is a challenge here as it imposes substantial limitations on industrial exoskeletons implementation in productions both in Russia and in other countries. A significant role in creating regulatory and technological base belongs to a possibility to accomplish an objective medical and biological examination of industrial exoskeletons safety and physiological efficiency. Developed and properly tested procedures for examining physiological and ergonomic properties of industrial exoskeletons will make a substantial contribution into a system of complex ergonomic tests accomplished at stages when exoskeletons are developed, created, and put into trial operation. The present paper dwells on up-to-date medical and biological procedures for examining safety and physiological efficiency of industrial exoskeletons. There are examples on using a «movement seizure» procedure performed with inertial sensors, ergospirometry, electromyography, and myotonometry for estimating physiological and ergonomic properties of industrial exoskeletons at a modeled working place. Results obtained via this research involving all the above mentioned procedures confirmed that it was safe and quite efficient to apply industrial exoskeletons for workers who had to deal with physical labor when performing work tasks similar to those used in developed models. Applied procedures can substantially enhance approaches to examining a worker’s functional state and obtained results will make a significant contribution into development of a regulatory and technological base for promising individual protection means used to protect the musculoskeletal system within the existing System of occupational safety standards.
Air pollution as a contributing factor of relapses and cases of multiplesclerosis
Authors:   Department of Neurosciences, Uppsala University, 3 Husargatan, Uppsala, SE-752 36, Sweden, Zhukovsky C. , Bind M.-A. ,   Department of Statistics, Harvard University, MA 02138, Massachusetts Hall, Cambridge, USA, Boström I. ,   Departments of Neurology and Clinical and Experimental Medicine, Linköping University, SE-581 83, Linköping, Sweden, Landtblom A.-M. ,   Uppsala University Hospital, SE-751 85, Uppsala, Sweden
Published: October 2020

The role of air pollution exposure in multiple sclerosis (MS) incidence and relapse worldwide has not yielded a consensus; some studies have reported positive associations, which have failed to reject the null hypothesis. Potential reasons for these contradictory results can in part be explained by differences in study designs and their associated limitations. Of note, rat and canine studies in 2010 and 2013, respectively, have shown that expression of HO-1 enzyme and inflammatory factors increased due to PM10 and diesel engine exhaust (DEE) exposure. Of the eight non-null epidemiological studies scrutinized, the majority included a retrospective study design with air pollution monitoring data, which may be an advantage due to large number of study participants and a disadvantage with possible air pollution measurement error for personal exposure. The studies included analyses of PM10, PM2.5, SO2, NO2, NOx and/or O3 with PM10 as the common denominator between all of them. Studies from 2003, 2014–2019 from Finland, France, Iran, Italy, and Serbia all provide evidence of an association between PM10 and incidence or relapse of MS. Though one 2018 study likewise described associations between exposures to NO2, O3, and PM10 and MS relapses using a case-crossover design, the multi-pollutant model only associated O3. Of the epidemiological studies that fail to reject the null hypothesis, there was no evidence of an association between PM10 exposure and MS relapse or incidence. Though air pollution has not been conclusively proven to be a cause of MS, evidence from multiple studies have associated incidence and relapse with exposure to pollutants, particularly PM10.
Vaccination against swine flu caused narcolepsy in several european countries
Authors:   Departments of Neurology and Clinical and Experimental Medicine, Linköping University, SE-581 83, Linköping, Sweden, Boström I. , Lindberger O. ,   Department of Neurosciences, Uppsala University, 3 Husargatan, Uppsala, SE-752 36, Sweden, Partinen M. ,   Department of Neurological Sciences, University of Helsinki, 4 Haartmaninkatu, Helsinki, 00014, Finland,   Helsinki Sleep Clinic, Vitalmed Research Centre, 3 Sitratori, Helsinki, 00420, Finland, Landtblom A.M. ,   Departments of Neurology and Clinical and Experimental Medicine, Linköping University, SE-581 83, Linköping, Sweden,   Department of Neurosciences, Uppsala University, 3 Husargatan, Uppsala, SE-752 36, Sweden
Published: October 2020

Narcolepsy is a rare sleeping disorder that gives sleep onset rapid eye movement periods and excessive daytime sleepiness. It is divided into two subgroups, narcolepsy type 1 where there also is orexin deficiency and cataplexy and narcolepsy type 2 that lack these features. Narcolepsy type 1 is assumed to be an autoimmune disease with destruction of orexinproducing cells. The pathology behind is unclear. There is a strong association to a class II HLA allele, HLADQB1*06:02 and the H1N1-virus and streptococcal infections has also been associated with narcolepsy. The severity of narcolepsy differs between patients from those who can manage their disease without medication to those who has a severe impact on their everyday life. There is a diagnostic delay between the onset of symptoms and time for diagnosis that in some cases can be more than a decade. The global mean prevalence is 30 per 100 000 inhabitants. The incidence in children in northern Europe has risen since 2010. An early study of the 2009 H1N1 influenza A pandemic indicated a high mortality and prompted efforts to rapidly come up with a vaccine. One of these was Pandemrix that was the most widely used in Europe and 61 % of the inhabitants in Sweden was vaccinated. Studies have shown an increased incidence of narcolepsy type 1 in European countries that had used Pandemrix, but no increased risk was seen in countries that had used other vaccines than Pandemrix.
Compreensão da educação escolar a partir do estudo de Martin Buber
Authors: Monteiro da Cruz Atanasio Alinne
Published: October 2020

Trata-se de um texto desenvolvido a partir da percepção de Parreira, com respaldo na filosofia buberiana, com ênfase no fator que o homem se constitui a partir de uma dualidade relacional, seja pelo encontro, seja pela experiência, assumindo, respectivamente, uma das seguintes formas: Eu-Tu ou Eu-Isso. O Eu não se define e não se encerra em si mesmo, mas se constitui na relação com o Tu, ao se relacionar genuinamente com o seu semelhante, sob o reconhecimento dele como ser pleno de potencial e de experiências, sob o interesse no conhecimento do outro como ser humano, em um processo de mútuas contribuições. Já a relação com o Isso pauta-se na observação e na objetividade, em que o Eu se relaciona com as coisas, contudo, esse Eu também toma seres humanos como coisas, principalmente, em relacionamentos distantes, rígidos e protocolares. Diante disso, a autora pondera sobre os desdobramentos de tais questões na educação e problematiza o papel da escola e dos educadores para a construção de uma nova perspectiva educacional.
Editais de concurso docente da Universidade Federal do Pampa
Authors: Barbosa Soares Cristiane , Ferreira da Silva Fabiane
Published: October 2020

O artigo investigou a aplicação da lei 12.990/2014 nos editais para docência na Unipampa, bem como a procura e o ingresso via cotas raciais. Para isto, a partir da etnografia de documentos, foram analisados 74 editais de ingresso para docência superior na instituição, do período de 2014 a 2018. O que confirmou que a instituição se adequa à lei. No entanto, revelou que as reservas de cotas raciais não estão sendo procuradas na proporção de sua oferta e que as(os) candidatas(os) não avançam nas etapas dos concursos. Assim, pode-se associar a baixa procura das vagas com o percentual de aprovação e inferir que estes podem ser fatores que contribuem para o número reduzido de professoras(es) negras(os) na instituição. Com isso, é necessário ampliarmos este debate para o campo universitário a fim de ressaltar a importância das cotas para o combate das desigualdades raciais em ambientes historicamente permeados pelo racismo.
Editorial
Authors: De Araújo Marta Maria
Published: October 2020

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Effect of Attachment and Personality Styles on the Ability to Interpret Emotional Vocal Expressions: A Cross-sectional Study
Authors: Esposito Anna , Troncone Alda
Published: October 2020

Background:

Taking attachment as its theoretical reference, the post-rationalist approach within cognitive theory has outlined two basic categories of the regulation of cognitive and emotional processes: the outward and inward personality orientations. Research on the role of attachment style in individuals’ ability to decode emotions has never considered inward and outward orientations.

Objective:

This cross-sectional study was conducted to compare individuals with different attachment styles and different inward/outward personality organizations on their ability to decode vocal emotions.

Methods:

After being assessed for attachment and personality styles, a sample of university students performed an emotional-decoding task, and their accuracy (Study 1) and reaction time (Study 2) was measured. Gender effects were also examined.

Results:

No significant differences in emotion decoding accuracy emerged among individuals with either secure or insecure attachment styles and either inward or outward personality orientations. Both secure and inward individuals were significantly faster than insecure and outward ones in decoding vocal expressions of joy, whereas securely attached individuals were faster than insecure ones in decoding vocal expressions of anger.

Conclusion:

Considering that the recognition of emotion falls within the basic skills upon which typical social interactions are based, the findings can be useful to enhance the comprehension of personality-related factors involved in the context of daily social interactions.
Hubungan Pemberian Informasi Obat Oral Dengan Kepuasan Pasien di Ruang Rawat Inap Bakung RSUD Panembahan Senopati Bantul Yogyakarta
Authors: Rimba Putri Imram Radne , . Zulpahiyana , Adekayanti Lis
Published: October 2020

Informasi dan pelayanan merupakan masalah utama yang paling banyak ditemui,dimana informasi dan pelayanan yang diberikan oleh pihak rumah sakit dianggapmasih belum cukup, bahkan mengecewakan pasien. berdasarkan data dari Yayasan Lembaga Konsumen Indonesia (YLKI), 2011 menunjukan bahwa masih kurangnya tingkat kepuasan pasien di Indonesia terhadap pelayanan rumah sakit termasuk pelayanan perawat. Penelitian ini bertujuan untuk mengetahui hubungan pemberian informasi obat oral dengan kepuasan pasien di ruang rawat inap bakung RSUD Panembahan Senopati Bantul Yogyakarta dan jenis penelitian yang digunakan adalah kuantitatif dengan pendekatan waktu cross sectional, jumlah sampel 109 responden dengan teknik sampling secara accidental sampling dan dianalisis menggunakan uji statistik kendal tau. Hasil dari penelitian ini menunjukan bahwa sebagian besar responden menyatakan bahwa pemberian informasi obat oral yang disampaikan perawat dalam kategori baik yaitu 95 (87,2%) responden dengan tingkat kepuasan sebagian besar menyatakan sangat puas yaitu sebanyak 56 (51,4%). Hasil analisis data tersebut menunjukan bahwa ada hubungan yang signifikan antara pemberian informasi obat oral dengan kepuasan pasien di ruang rawat inap bakung RSUD Panembahan Senopati Bantul Yogyakarta.

Kata Kunci: Pemberian Informasi Obat Oral, Kepuasan Pasien.
Evaluación de la calidad seminal de conejos alimentados con dietas que contienen diferentes niveles de inclusión de semillas de linaza (Linum usitatissimum)
Authors: Moya Romero Diana Carolina , Pires Barbosa Larissa , Morais Machado William , Santana da França Caline , Albuquerque Vieira Renan Luíz , Silva Mendes Claudineia , Almeida Santana Ana Lúcia , Silva Souza Rosiléia
Published: October 2020

El objetivo de este trabajo fue evaluar el efecto de la semilla de linaza (Linum usitatissimum) en la calidad física y morfológica del semen fresco y refrigerado de conejos. Se emplearon 20 machos Nueva Zelandia distribuidos en grupos según niveles de inclusión de semilla en su dieta durante 100 días: 0 %, 3 %, 6 % y 9 %. 15 días después de iniciar el suministro de la dieta se realizaron colectas seminales una vez por semana con vagina artificial y una hembra como maniquí. Para la evaluación física y morfológica se diluyó en medio Tris-yema y refrigerado a 5 °C; se valoró la motilidad espermática progresiva, el vigor espermático y la morfología espermática a las 0, 2, 12, 24, 48 y 72 horas post-refrigeración. La información fue analizada mediante análisis de varianza y de regresión al 5 % de significancia. Para la morfología, volumen, color y aspecto seminal del semen fresco (p > 0,05) no hubo diferencia. Para volumen, turbidez, motilidad, vigor y concentración, hubo valores medios de 0,92 ± 0,24 mL; 0,86 ± 0,35; 76,58 ± 7,13 %; 3,37 ± 0,28 y 205,75 ± 20,77 × 106 sptz, respectivamente. Hubo diferencia para motilidad y vigor espermático a las 0, 2, 12, 24, 48 y 72 horas post-refrigeración (p < 0,005). Se concluyó que la inclusión de hasta 9 % de semilla de linaza en la dieta de conejos no alteró los parámetros físicos y microscópicos evaluados en este estudio en semen fresco y refrigerado de conejo.
Phototherapy Using a Light-Emitting Fabric (BUBOLight) Device in the Treatment of Newborn Jaundice: Protocol for an Interventional Feasibility and Safety Study (Preprint)
Authors: Lecomte Fabienne , Thecua Elise , Ziane Laurine , Deleporte Pascal , Duhamel Alain , Vamour Clémence , Mordon Serge , Rakza Thameur
Published: October 2020

BACKGROUND

Neonatal jaundice is a common condition occurring in 60%-80% of all healthy-term and late-preterm neonates. In the majority of cases, neonatal jaundice resolves spontaneously and causes no harm; however, in some neonates, signiﬁcant hyperbilirubinemia can develop and lead to kernicterus jaundice, a serious neurological disease. Phototherapy (PT) is the preferred treatment for jaundice; however, to be effective, PT devices need to have a broad light emission surface to generate no or little heat and to provide an optimal wavelength and light intensity (420-490 nm and ≥30 µW/cm²/nm, respectively).

OBJECTIVE

This study aimed to investigate the feasibility, safety, and level of satisfaction of parents and health care teams with the BUBOlight device, an innovative alternative to conventional hospital PT, in which luminous textiles have been incorporated in a sleeping bag.

METHODS

This interventional, exploratory, simple group, nonrandomized, single-center trial will be conducted at Lille Hospital. In total, 10-15 neonates and their parents will be included to obtain evaluable data from 10 parent-neonate pairs. Neonates weighing more than 2500 g at birth and born with ≥37 weeks of amenorrhea that required PT in accordance with the guidelines of the National Institute For Health and Clinical Excellence will receive one 4-hour session of illumination. Total serum bilirubin and transcutaneous bilirubin levels were obtained at the start and 2 hours after the end of PT. Cutaneous and rectal temperatures, heart rate, and oxygen saturation will be measured at the beginning and during PT. The number of subjects is therefore not calculated on the basis of statistical assumptions. We aim to obtain a minimum proportion of 90% (ie, 9 of 10) of the neonates included, who have been able to undergo 4-hour PT without unacceptable and unexpected toxicities. We will calculate the mean, median, quartiles, minimum and maximum values of the quantitative parameters, and the frequency of the qualitative parameters. The rate of patients with no unacceptable and unexpected toxicities (ie, the primary endpoint) will be calculated.

RESULTS

The first patient is expected to be enrolled at the end of 2020, and clinical investigations are intended for up to June 2021. The final results of this study are expected to be available at the end of 2021.

CONCLUSIONS

Our findings will provide insights into the safety and feasibility of a new PT device based on light-emitting fabrics for the treatment of newborn jaundice. This new system, if proven effective, will improve the humanization of neonatal care and help avoid mother-child separation.

CLINICALTRIAL

ClinicalTrials.gov NCT04365998; https://clinicaltrials.gov/ct2/show/NCT04365998

INTERNATIONAL REGISTERED REPORT

PRR1-10.2196/24808
"АРМИЯ-2020" ГЛАЗАМИ СВЯЗИСТА
Authors: Попов С.
Published: October 2020

Международный военно-технический форум "АРМИЯ", организатором которого выступает Министерство обороны России, отметил в нынешнем году пятилетний юбилей. VI форум "АРМИЯ-2020" состоялся спустя 14 месяцев после предыдущего – 23–30 августа, его центральные события проходили на трех традиционных площадках в Подмосковье: конгрессно-выставочном центре "Патриот-Экспо", на полигоне Алабино (сухопутный и водный демонстрационные кластеры) и аэродроме Кубинка. Кроме того, часть демонстрационных показов прошла на полигоне Ашулук в Астраханской области. Главной отличительной особенностью форума 2020 года стало его совместное проведение с Армейскими международными играми.
ТЕХНОЛОГИИ LPWAN И ВОЗМОЖНОСТЬ ИХ АДАПТАЦИИ ДЛЯ СПУТНИКОВЫХ СЕТЕЙ IoT
Authors: Анпилогов В. , Ань Нгуен Дык
Published: October 2020

Представлены технические параметры наиболее известных технологий LPWAN, большая часть которых относится к проприетарным. Особое место занимает LoRa – фактически единственная открытая технология. Как показал анализ возможности адаптации технологий LPWAN для использования в спутниковых сетях IoT, ориентированных на прямой доступ к оконечным устройствам, наиболее перспективная технология – LoRa. В статье приводятся графические данные взаимосвязи отношения сигнал/шум и вероятности ошибки на бит, которые обеспечивают объективную оценку бюджета абонентских радиолиний спутниковых каналов, реализованных на основе технологии LoRa.
Borges a la sombra de Lovecraft: There are More Things
Authors: Torres-Scott Andrés
Published: October 2020

Resumen:Este ensayo estudia el cuento “There are More Things” (TMT) como un pastiche en homenaje a Lovecraft. El análisis identifica cómo Borges construyó TMT al incluir una por una todas las características de la weird tale que explica Lovecraft en Introduction to Supernatural Horror in Literature, así como otros elementos de los cuentos de Lovecraft que probablemente leyó Borges. Como resultado, el cuento TMT de Borges no solo emula el estilo del horror cósmico de Lovecraft, sino que también incluye los ocho elementos que Lovecraft consideró indispensables en este género.    This paper studies Borges’ short story “There are More Things” (TMT) as a pastiche in homage to Lovecraft. The analysis identifies how Borges built TMT by including one by one all the characteristics of the weird tale as explained by Lovecraft in his Introduction to Supernatural Horror in Literature as well as other elements from his tales that Borges probably read. As a result, Borges’ TMT is a tale that does not only emulates Lovecraft’s cosmic horror style, but also includes all the elements Lovecraft deemed indispensable in this genre.    Palabras clave:Keywords: Borges, Lovecraft, weird tale, supernatural, cosmic horror, atmosphere.
Miceli, Sergio. Sueños de la periferia. Intelectualidad argentina y mecenazgo privado. Juan Pablo Pardías (trad). Buenos Aires, Prometeo Libros, 2017.
Authors: Martínez Carrizales Leonardo
Published: October 2020

Reseña del libro de Sergio Miceli:,Sueños de la periferia. Intelectualidad argentina y mecenazgo privado
As representações sociais do corpo para pessoas com deficiência física adquirida
Authors: Berri Bruna , Da Silva Bousfield Andréa Barbará , Da Silva Jean Paulo , Giacomozzi Andréia Isabel
Published: October 2020

O corpo é essencial na formação de impressões sobre alguém, ao se pensar em pessoas com deficiência física, o corpo torna-se o principal marcador da diferença. Na fundamentação teórica dessa pesquisa utilizou-se a Teoria das Representações Sociais e objetivou-se caracterizar as representações sociais do corpo para 12 homens e 12 mulheres com deficiência física adquirida. Como instrumentos utilizou-se entrevista semiestruturada e questionário sociodemográfico. Os dados foram analisados através de Classificação Hierárquica Descendente e análise descritiva. As representações sociais do corpo apresentaram dois eixos estruturais: saúde e estética. Não foram encontradas diferenças significativas nas representações sociais do corpo de homens e mulheres, contudo, alguns elementos vivenciais foram distintos, evidenciando manutenção de comportamento relacionado aos papeis de gênero. Mostra-se pertinente a criação de espaços públicos que se atentem à diversidade corporal e estratégias que estimulem a participação social e política das pessoas com deficiência.
Transanal irrigation is more beneficial in symptomatic management of neurogenic bowel disease than conservative bowel management
Authors: Tran Chi-Lan
Published: October 2020

A clinical decision report appraising Christensen P, Bazzocchi G, Coggrave M, et al. A Randomized, Controlled Trial of Transanal Irrigation Versus Conservative Bowel Management in Spinal Cord–Injured Patients. Gastroenterology. 2006;131(3):738-747. https://doi.org/10.1053/j.gastro.2006.06.004
The new e-commerce/home delivery retail distribution paradigm
Authors: Seaton Henry E
Published: October 2020

The purpose of this article is to set forth a basic outline of the new e-commerce home delivery retail distribution paradigm. Special attention will be placed on how it is being implemented and the as yet unresolved contracting, regulatory and risk transfer issues involving selection, retention, and use of motor carriers, particularly for the rapidly developing final delivery of consumer goods.
Precluding discovery of preventability determinations in trucking accidents
Authors: Foppe Patrick E
Published: October 2020

The discoverability and admissibility of post-accident “preventability” determinations by trucking companies is often much disputed in truck accident cases. It is well known that Plaintiff’s attorneys will try to construe a trucking company’s classification of an accident as “preventable” as an admission of fault during the course of a lawsuit. However, statements made by the FMCSA provide significant support to a trucking company’s efforts to preclude discovery or admission of preventability determinations in a lawsuit. This articles explores these issues.
Safety fitness determinations: what is FMCSA measuring?
Authors: Andrews Mark J , Seaton Henry E
Published: October 2020

Big Data and regulatory "Improv" are drowning due process
Restoration of internal surfaces of cylindrical parts of small diameters by cold gas dynamic spraying
Authors: Chavdarov Anatoliy V. , Tolkachev Aleksey A.
Published: October 2020

Wear of internal surfaces of cylindrical parts of small diameters is a common defect of equipment used in the agro-industrial complex. There are problems with low powder utilization and lack of a design solution for coating the inner surfaces of cylindrical parts with small diameters. (Research purpose) The research purpose is in evaluating the adhesive and cohesive strength and developing a technology for restoring the internal surfaces of cylindrical parts of small diameters by cold gas-dynamic spraying. (Materials and methods) Authors applied the method of cold gas dynamic spraying. The article presents a device for gas-dynamic coating on the inner surfaces of cylindrical parts and determines the optimal deposition modes for powder consumption and heating temperature. A portable DIMET-403 unit, aluminum oxide powder for surface preparation, a-20-11 aluminum powder, and a steel plate were used for the study. The weight was measured on analytical scales with an accuracy of 0.001 grams. Tests were performed on the adhesive and cohesive strength of the coating on cylindrical samples prepared by mechanical processing, under the most favorable conditions with a duration of deposition equal to 60 seconds. Samples were processed after sputtering on a lathe to obtain a cylindrical belt. (Results and discussion) The values of adhesive and cohesive strength of coatings fit into the range of values suitable for operation, and meet the conditions for obtaining a wear-resistant ceramic coating. The article presents a technology for obtaining a sublayer for the manufacture of ceramic wear-resistant surfaces in a pair of friction piston ring-cylinder. (Conclusions) The developed restoration technology of internal surfaces of cylindrical parts of small diameters by cold gas-dynamic spraying solved the problem of their wear.
Methods for obtaining metal powder materials
Authors: Shemberev Ivan A. , Zuyevskiy Vitaliy A.
Published: October 2020

In practice, a large number of methods for obtaining metal powders are known, their diversity is due to the technological capabilities of manufacturing powders in several ways from different types of raw materials, as well as different requirements for the characteristics of powders for various fields and conditions of application. Metal powders in most cases are a secondary product, the properties of which are affected by the manufacturing method, so the theoretical foundations of their production occupy an important place in the processes of powder metallurgy. (Research purpose) The research purpose is in analyzing existing methods for obtaining metal powder materials and develop a new energy-and resource-saving method for obtaining powders, such as electroerosive dispersion. (Materials and methods) Authors have studied literary sources, works of prominent scientists and specialists on the subject of research. (Results and discussion) The article presents the main methods of powder production: mechanical and physical-chemical, as well as a relatively new method of electroerosive dispersion. More productive methods of obtaining powders are being introduced into production, in which considerable attention is paid to methods of cleaning powders from oxygen and carbon, controlling the shape of particles and their sizes. (Conclusions) Analysis of existing methods for obtaining powder materials has shown that they do not fully meet the requirements for quality composition of new technological solutions, in particular, additive technologies. The development of fundamentally new methods for obtaining powders, such as electroerosive dispersion, is a promising direction that makes it possible to obtain powders from almost all conductive materials, adjusting the size and shape of granules.
Some design features of sliding current leads
Authors: Buryakin Aleksey V. , Nesterenko Nikita S. , Tsirkov Pavel A.
Published: October 2020

Plastic bending of the electrode wire causes an increase in the required force of its supply to the current supply. This can lead to uneven feed and instability of welding, surfacing and spraying processes. (Research purpose) The research purpose is in considering the behavior of the supplied electrode wire in the current supply and suggest ways of reducing the force of its pushing. (Materials and methods) In order to reduce the force of feeding the wire to the current supply, its bend must be elastic. If the wire must be deformed plastically, it must be bent before entering the current supply and the bend of the current supply channel must correspond to the curvature of the wire. The article presents calculations of the radius of curvature of the wire to assess the behavior of the wire when it bends, at which it begins to deform plastically. (Results and discussion) The article presents results for the bending radii of wires made of various materials, at which they begin to deform plastically. Authors selected for calculations the wire materials and their diameters, which are most often used for electric arc welding and sputtering. With an increase in strength properties and a decrease in wire diameters, their bending occurs elastically at a smaller radius. This information and the described behavior of the wire when it is fed into a sliding current supply can be useful for developers in creating metallization and surfacing equipment. (Conclusions) In order to reduce the force of pushing the wire into the current supply channel, it is desirable to deform it elastically when feeding. For the most commonly used materials for arc welding, surfacing and metallization, the values of the bending radii of the wires at which plastic deformation begins are calculated and presented. When plastic bending of the wire is used to reduce the feed force, it must be bent before the entrance to the current supply channel. The bend of the wire must correspond to the radius of the channel.
Going to Business or Intending in Science?
Authors: Rogulin R. S.
Published: October 2020

This paper discusses the urgent problem of Russian graduates: job search after graduation. It is shown that, in connection with the growing population of the country due to migrants, the arrival of cheap labor from neighboring countries and other economic factors, the search for a decent job as a graduate remains a difficult and relevant problem in modern Russia. The result of this study can be considered as follows. It is shown that there is the possibility of decent earnings in the scientific field of activity when working with students. A mathematical model and an algorithm for simulating the demonstrated situation are developed. It is shown when a graduate should start searching for additional income and when he can catch up with the total amount of money paid if he went to work in a commercial company. This research is purely theoretical.
Rememorações do autoritarismo brasileiro no filme Revolução de 30
Authors: Zanetti Negrini Márcio , Freitas Gutfreind Cristiane
Published: October 2020

Imagens e sons do passado tornam-se atuais pela articulação própria à montagem cinematográfica, revelando a dimensão imagética da história enquanto rememoração. Filmes de arquivo possuem lugar de destaque para esse entendimento, sendo o longa-metragem Revolução de 30 – dirigido por Sylvio Back (1980) – um caso emblemático. Lançado no declínio da Ditadura Militar, o filme aborda a transição autoritária entre o final da primeira fase republicana e o início do primeiro ciclo de governo Vargas. A partir da seleção de determinadas sequências, analisamos como o longa-metragem sugere correlações entre aquele período autoritário e a redemocratização, considerando três aspectos: os trabalhadores e as evocações do autoritarismo; o tenentismo revisitado; a transição oligárquica e o continuísmo autoritário.
The use of Z-Score to predict UTP loans
Authors: Dallocchio Maurizio , Ferri Salvatore , Tron Alberto , Vizzaccaro Matteo
Published: October 2020

The Z-Score model developed by Altman in 1968 is considered one of the more reliable predictors of bankruptcy. In contraposition to the existing literature, the paper aims
to investigate the Z’-Score and Z’’-Score ability to predict unlike-to-pay (UTP) loans, which is an event far earlier than insolvency. To investigate this relation, the study uses a unique sample of UTP loans, provided by a major Italian bank, and applies, as a predictive model, the Logit model, well known in academics. Final results confirm that the Z’-Score and
the Z’’-Score are able to forecast UTP loans. Furthermore, the findings of the papers reveal the importance of corporate governance variables in predicting financial failures.
Métodos de tratamiento superficial y su efecto en las propiedades físico mecánicas de fibras de guadua
Authors: Sánchez Martha Lissette , Patiño William , Cárdenas Jhon
Published: October 2020

El uso de fibras vegetales como refuerzo de compuestos poliméricos de aplicación en ingeniería civil requiere la implementación de métodos de modificación de su superficie. En este trabajo se presenta la evaluación del efecto de la modificación de la superficie en las propiedades de fibras extraídas del varillón de culmos de bambú Guadua Angustifolia Kunth. La obtención de las fibras se realizó por medio de un proceso de trituración mecánica. La modificación superficial se realizó utilizando dos métodos de tratamiento: alcalino y tratamiento con plasma. Para observar la composición química de las fibras y su morfología fueron obtenidas imágenes por medio de microscopía electrónica de barrido (MEB). La rugosidad de las fibras sin tratamiento fue determinada mediante microscopia de fuerza atómica (AFM). El índice de cristalinidad fue determinado mediante Difracción de Rayos X (XRD). La caracterización mecánica se centró en ensayos de resistencia a tensión. Los resultados de la caracterización física y mecánica permiten comprobar que al realizar un tratamiento superficial es posible remover parcialmente la lignina, la hemicelulosa y otras impurezas, lo cual contribuye a incrementar la resistencia y la rugosidad de las fibras promoviendo una mejor adherencia con las resinas usadas habitualmente en la elaboración de materiales compuestos. Fibras tratadas con plasma mostraron un incremento en su resistencia y rigidez. Los resultados obtenidos demuestran que al emplear este tipo de tratamiento, es posible incrementar la resistencia a tensión de las fibras hasta en un 25%.
Analysis of performance of a converted electric vehicle
Authors: Salazar Marin Edgar Alonso , Arroyave Londoño Juan Felipe , Moreno Ivan Yesid
Published: October 2020

Colombia, like other developing countries has been incorporating different electrical vehicles to the automotive national market. While the acquisition of a brand new electric vehicle is still expensive, transformation from used traditional vehicles (combustion) to electrical vehicles has become an interesting economical option. This work presents a performance evaluation of a transformed vehicle from its combustion version. The theoretical and experimental analysis (in rugged geographical reliefs such as Colombia) are necessary to consolidate the validity of this type of proposals at technical, economic and environmental impact levels. The procedure of an electric conversion presented herein showed significant mitigation of greenhouse gases owing to the renunciation of 6,54 L per 100 km and hence avoiding CO emissions: 1,808 g/km and THC + NOx: 0,652 g/km. The procedure included selection of both suitable car (low weight) and electric conversion kit, as well as assembly design, disassembly of combustion system, implementation of electric components. Additionally, experimental tests were performed to determine the behavior with respect to power under some load demands validating the proposed traction model.
Análisis y evaluación del riesgo de deslizamientos superficiales en un terreno montañoso tropical: implementación de modelos físicos simples
Authors: Marín Roberto J. , Marín-Londoño Jesner , Mattos Álvaro J.
Published: October 2020

El riesgo de deslizamientos superficiales expresa las pérdidas o daños causados por la ocurrencia de este fenómeno y depende de la magnitud, relacionada con su probabilidad de ocurrencia, y su efecto en los elementos expuestos, determinado por su grado de vulnerabilidad. En esta investigación se analizan y evalúan la amenaza, vulnerabilidad y riesgo de deslizamientos superficiales en un terreno montañoso tropical. Se utilizó el modelo físico SHALSTAB para el análisis de la amenaza y otros modelos de fácil implementación para calcular la vulnerabilidad física de ocho viviendas y de personas dentro de las mismas. Se calcula el riesgo de las estructuras, en términos económicos, y el riesgo de pérdidas de vidas humanas, para personas dentro de las viviendas, mediante un análisis de las consecuencias de estos elementos expuestos dada la ocurrencia de deslizamientos superficiales definidos en la evaluación de la amenaza. Esta metodología representa una herramienta que puede ser útil en planes de ordenamiento territorial y gestión del riesgo de movimientos en masa.
Evaluación del comportamiento de un motor diésel modo encendido provocado con biogás enriquecido con CH4 e hidrógeno
Authors: Cardona Vargas Arley Johany , Jaramillo Álvarez Jonathan Steven , Amell Arrieta Andrés Adolfo
Published: October 2020

El uso de combustibles renovables provenientes de fuentes distintas a las fósiles toma importancia como alternativa a fuentes energéticas, en este caso el biogás. Sin embargo, motores exclusivos de uso de biogás tienen un alto costo económico, y poca disponibilidad comercial para bajas potencias, lo que hace difícil el aprovechamiento de dicho combustible sin la presencia del combustible diésel.  Por lo que en este trabajo un motor de encendido por compresión se modifica a modo encendido provocado, sin cambiar la relación de compresión con el fin de lograr eficiencias efectivas altas. En este trabajo se analiza el comportamiento mecánico y ambiental de un motor estacionario diésel de 1550 cm3, con una potencia nominal de 20 kW@3000 rpm, con una relación de compresión de 15.5:1, adaptado a encendido provocado. Para el desarrollo de las pruebas planteadas en este trabajo se tiene las siguientes condiciones, el motor gira a 1800 rpm a 4 kW que corresponde al 57% de la carga del motor, a una presión atmosférica de 0.852 bar que corresponde a la ciudad de Medellín, trabajando con mezclas de metano (CH4) y dióxido de carbono (CO2) con el objetivo de simular la composición de un biogás común (60% CH4 – 40% CO2), y de biogás enriquecido (70% CH4 – 30% CO2 y 80% CH4 – 20% CO2), donde cada una de las mezclas fueron enriquecidas con adiciones de hidrógeno en porcentajes de 0%, 5%, 10% y 15% en volumen, la adición de hidrógeno presenta ventajas en la combustión ya que extiende los límites de inflamabilidad del biogás, además contribuye a la disminución de gases de efecto invernadero como el CO2, y de contaminantes como CO e hidrocarburos sin quemar, sin embargo la adición de hidrógeno aumenta las emisiones de NOx. Se encontró que la adición de 15% de hidrógeno mejora significativamente las propiedades de combustión cuando se hace uso de una mezcla combustible pobre, equivalente a un dosado relativo de 0.822, para el caso del biogás puro, mientras que para las mezclas de biogás con hidrógeno no se encontraron mejoras significativas en el comportamiento mecánico y ambiental del motor.
E-commerce as a tool to boost the development of Cuban agribusiness companies
Authors: Perdigón Llanes Rudibel
Published: October 2020

E-commerce represents a driving force for the economic development of enterprises and businesses. E-commerce is widely used in developed countries, however, it is considered an alternative commercialization channel in developing countries. The development of electronic commerce in Cuba is incipient, mainly in institutions of the agribusiness sector that base their businesses on traditional models. This situation affects the commercial and economic development of these organizations and difficult the supply of food to the Cuban agricultural market. In this research, a strategy was developed to implement e-commerce in a medium-sized enterprise in the Cuban agro-industrial sector. Historical-logical method, in-depth interview, surveys, participant observation, theoretical triangulation and modeling were used as scientific methods. The strategy is aimed to improving the commercial management of the company and promoting its commercial and economic development. This paper contributes to increase the efficiency of Cuban agribusiness companies and the food market in this country through the use of e-commerce.
Alternativas microbiológicas para la remediación de suelos y aguas contaminados con fertilizantes nitrogenados
Authors: García Galindo Luisa Alejandra , Capera Rivas Arzaled , Méndez López Jean Paul , Mayorquín Moreno Nicolás
Published: October 2020

El Nitrógeno (N) es considerado el nutriente más importante para la producción vegetal, por lo que se requiere fertilizar con cantidades del mismo que permitan garantizar el adecuado desarrollo de los cultivos. Actualmente, los fertilizantes de síntesis química con amonio (NH4+), nitrato (NO3-) o úrea (CO(NH2)2), son los más utilizados; sin embargo, se dosifican y aplican a los suelos de forma incorrecta empleando cantidades elevadas con poca eficiencia, causando problemas de salinidad, toxicidad y de contaminación en suelos y aguas, lo que a su vez tiene efectos en los ecosistemas y la salud. Teniendo en cuenta la necesidad de continuar generando tanto productos, como mecanismos, que permitan garantizar la productividad de los sistemas agrícolas y su aporte a la economía y seguridad alimentaria de los países de forma sostenible, se han planteado soluciones variadas al respecto. En este escrito se buscó analizar los efectos generados por los fertilizantes nitrogenados en los suelos y aguas, así como las alternativas planteadas por varios autores que permiten minimizar el impacto de estos compuestos en el ambiente. Tras realizar una revisión sistemática de diversos estudios sobre el tema, se observó que en la literatura de los últimos 20 años se resalta el uso de microorganismos para la biorremediación, así como la aplicación de biofertilizantes como las alternativas más relevantes y eficientes para contrarrestar los efectos contaminantes con fertilizantes nitrogenados de forma sostenible.
Iris biometric recognition of latin american eyes in a white light controlled environment
Authors: Muñoz Acosta Deivy Alejandro , Cardona Cortes Daniel Ricardo , Cortés Osorio Jimy Alexander
Published: October 2020

Iris biometric recognition has taken a great interest in the last decade. Many private and public facilities need to improve their security access due to the increasing terrorist attacks, the growing number of fraud and identity theft among other felonies. The regular technologies are almost all based on infrared light illumination due to the ease of using this for texture approach recognition. Even Though this technique is suitable in most cases, the highest price of these cameras on the market demands the research of either daylight or a white light solution. There are some known iris databases such as CASIA and UBIRIS, but they are not from Latin-American eyes that have different occlusion and color issues. A white light controlled environment was used to take the set of pictures 500 that let us have a new color database to carry out the experiments based on the EigenIris technique. The best iris and pupil segmentations were obtained either on the red or green color layers of the RGB images at 100% of correct localization. In this research, a sensitivity of 0,82 and specificity of 0,85 was achieved with a modified version of the EigenIris method using the blue color layer.
Thin-layer drying model of Cosmos caudatus
Authors: Latiff Norliza , Abdullah Luqman , Ong Pei , Mohd Amin
Published: October 2020

Drying kinetic models and energy characteristics are well known tools to evaluate and predict the most suitable drying physiochemical conditions for a particular product. In this study, a thin-layer drying model was developed to best describe the drying kinetic behaviour of Cosmos caudatus. The drying experiments were conducted using a thermal convection oven and C. caudatus leaves were dried at five different temperatures (40, 50, 60, 70, 80?C). Six different thin-layer drying models were proposed and applied to select the best drying model by fitting to the experimental moisture ratio data. The proposed drying models included Page, Modified Page, Lewis, Henderson-Pabis, Two Term and Weibull, and the results were statically compared and evaluated based on their goodness of fit. Among these, the Page model was found to best represent the thin-layer drying behaviour of C. caudatus with 99.76%, 5.93?10-5, 9.68?10-5 for the coefficients determination (R2), reduced chi-square (?2), and root mean square error (RMSE), respectively. The average effective moisture diffusion coefficient (Deff) for the temperature 40 to 80?C ranged from 4.12?10-12 to 24.71?10-12 m2/s, while the activation energy (Ea) was calculated at 39.35 kJ/mol based on the Arrhenius?s equation.