bluuebunny/crossref_metadata_2025_split huggingface dataset:
Robotized Fiber Laser Cladding of Steel Substrate by Metal Matrix Composite Powder at Cryogenic Conditions
Authors: Lisiecki Aleksander , Ślizak Dawid , Kukofka Adrian 
Published: August 2019

Abstract
The results of investigations on laser cladding of mild steel plates (0.17 wt.% carbon and 1.4 wt.% manganese) by nickel powder with addition 60 wt.% of tungsten carbides at conditions of forced cooling by liquid nitrogen are presented. To provide reproducible conditions and high accuracy, tests of cladding were carried out on a robotized stand equipped with a fiber laser generator and powder feeding system. The symmetrical circular laser beam with beam spot diameter of 300 μm was applied as the heat source for cladding of composite single stringer beads at different heat inputs and different cooling conditions. Free cooling of the steel substrate was conducted in the ambient air, while the forced cooling was achieved by partial immersion of the steel plate in liquid nitrogen at approximately −190°C. The results showed that the conditions of cooling have a strong influence on the cladding process, mechanism of a bead formation, quality, microstructure, and geometry of the beads. Laser cladding at forced cooling leads to a favorable fine-grained microstructure and increased microhardness of the metal matrix and also, lower dilution. In the case of stringer beads produced at cryogenic conditions, the heat-affected zone in the substrate of the mild steel is hardened with evident traces of bainitic microstructure. However, the heat input of laser cladding must be significantly increased at forced cooling to provide the proper shape of the bead and also to avoid cracks and a lack of fusion the steel substrate.
INVESTIGATION OF PHENOLIC COMPOSITION OF ORGANICALLY-GROWN STRAWBERRY AND BLUEBERRY
Authors: UÇURUM Huriye Özgül , EKŞİ Hacer 
Published: August 2019

The present study aimed to investigate phenolic
compounds of strawberry which is organically-grown in Bursa region and
blueberry in Trabzon region. The phenolic acids and flavonoids were detected by
RP-HPLC according to their retention times with the help of diode array
detector at 280 nm, 320 nm and 360 nm. Investigated compounds were gallic acid,
epigallocatechin, catechin, epicatechin, epicatechin gallate, 2 coumaric acid,
3 coumaric acid, 4 coumaric acid, chlorogenic acid, cafeic acid, neochlorogenic
acid, trans resveratrol, ferulic acid, quercetin, kaempferol and myricetin. According to results it was determined that
bluberry fruit contains high amounts of chlorogenic acid (644.25 mg/kg) and
among the phenolic acids in strawberries, 4 coumaric acid is regarded as major
phenolic compound (3.76 mg/kg). The
highest level of myricetin compounds was measured in blueberry (14.41 mg/kg),
on the contrary, myricetin was not identified in strawberry fruits but this
fruit is especially rich in catechins (58.34 mg/kg).
The effect of tillage system and fertilization on corn yield and water use efficiency in irrigated conditions of the South of Ukraine
Authors: Vozhehova R. A. , Maliarchuk M. P. , Biliaieva I. M. , Markovska O. Y. , Maliarchuk A. S. , Tomnytskyi A. V. , Lykhovyd P. V. , Kozyrev V. V. 
Published: August 2019

Efficient water management in agriculture is an important part of the general programme on water resources preservation. This study is devoted to the determination of the effects of soil processing system and mineral fertilization on the water use efficiency and productivity of grain corn (Zea mays Linnaeus, 1753). The trials were conducted in 2017–2018 on irrigated land in the South of Ukraine. The field experiments were carried out on the experimental plots of the Institute of Irrigated Agriculture of the NAAS in four replications. We studied the following agrotechnological parameters and their combinations: Factor A – primary tillage type and depth within different tillage systems in the short crop rotation (grain corn – grain sorghum – winter wheat – soybean); Factor B – application rates of mineral fertilizers (N0P0, N120P60, N180P60). We established that the highest yield of grain accompanied by the best water use efficiency was provided by the cultivation technology with disk cultivator tillage on the depth of 8–10 cm within the differentiated tillage system in the crop rotation under the maximum nutritive background of N180P60. This agrotechnological variant resulted in a corn grain yield of 14.51 and 14.59 t/ha in 2017 and 2018 years of the study, respectively. The coefficient of water use efficiency, which is the relation of the water used by the crop to the yield, in this variant was the lowest – 39.6 and 42.0 mm/t in 2017 and 2018, respectively, which indicates the optimum response of corn grain to watering. The worst indexes of water use efficiency and corn productivity were determined in the experimental variant with disk cultivator tillage on the depth of 12–14 cm within the subsoil tillage system within the crop rotation under non-fertilized conditions. We determined that strengthening of the crop nutrition under the rational tillage system in crop rotation is helpful in optimization of the crop water use in the irrigated conditions of the South of Ukraine, which is very important in the current conditions of freshwater scarcity.
Homogenization of very rough three-dimensional interfaces for the poroelasticity theory with Biot's model
Authors: Kieu Nguyen Thi , Vinh Pham Chi , Tung Do Xuan 
Published: August 2019

In this paper, we carry out the homogenization of a very rough three-dimensional interface separating two dissimilar generally anisotropic poroelastic solids modeled by the Biot theory. The very rough interface is assumed to be a cylindrical surface that rapidly oscillates between two parallel planes, and the motion is time-harmonic. Using the homogenization method with the matrix formulation of the poroelasicity theory, the explicit homogenized equations have been derived. Since the obtained homogenized equations are totally explicit, they are very convenient for solving various practical problems. As an example proving this, the reflection and transmission of SH waves at a very rough interface of tooth-comb type is considered. The closed-form analytical expressions of the reflection and transmission coefficients have been derived. Based on them, the effect of the incident angle and some material parameters on the reflection and transmission coefficients are examined numerically.
O MUSEU E O EXERCÍCIO DE LIBERDADE: O trabalho de acessibilidade cultural do Museu de Arte Moderna de São Paulo
Authors: Leyton Daina 
Published: August 2019

<p class="Normal3"><span>O presente artigo apresenta o trabalho de educação de e acessibilidade cultural do Museu de Arte Moderna de São Paulo. No processo de idealização e construção de um <em>Museu de Outra Percepção</em>, nos deparamos com nossas limitações e aprisionamentos, que se iniciam no corpo de cada sujeito e se ampliam no corpo social. Os aprendizados que tivemos com públicos diversos que frequentam o museu, entre pessoas com deficiência, o público da saúde mental, e pessoas em situação de vulnerabilidade social, nos trouxeram reflexões sobre nossa liberdade e as várias maneiras que ela é cerceada. Essa foi a contribuição reflexiva trazida para os temas dos seminários: <em>3o Políticas Públicas para a Educação Penitenciária: Arte, Cultura e Educação Penitenciária</em>e o <em>IV Seminário de Artes Cênicas</em>.</span></p>
Aplicación de análisis multivariado para el estudio de calidad sitio de los bosques de pino pátula (pinus patula) en las fincas el recreo y la palma en el departamento de Caldas
Authors: Mejía Giraldo Luís Miguel , Quintero Estrada Luís Guillermo 
Published: August 2019

La investigación se lleva acabo con la ayuda de la reforestadora GUASIMO S.A. endos fincas de su propiedad y de las cuales se quería estimar su productividad, ya queÂ los encargados de los bosques no cuentan con el tiempo disponible para realizar unasÂ evaluaciones satisfactorias que puedan demostrar cual es el estado actual de los bosques.En el transcurso de esta investigación se toma unas variables representativas dela calidad de sitio y con las cuales por medio de programas estadísticos, se puedeentender cual es el comportamiento de dichos bosques y así de una manera fácil ypedagógica, se pueden tomar los datos y determinar los momentos de corte en loslotes.
Efisiensi Pelat Beton dengan Bekisting dan Tulangan Konvensional menjadi Floordeck dan Tulangan Wiremesh
Authors: Afriyono Hari 
Published: August 2019

Pelat lantai beton selama ini masih banyak yang dikerjakan secara konvensional, yaitu cara pengerjaan yang masih menggunakan multipleks sebagai bekesting dan besi beton sebagai tulangannya yang dirakit secara manual di tempat. Sistem ini diperharui dengan sistem yang menggunakan pelat baja (floordeck) sebagai bekesting dan wiremesh sebagai tulangan. Artikel ini membahas efesiensi pelat beton yang dihasilkan jika mengganti metode bekisting dan tulangan konvensional dengan floordeck dan wiremesh. Analisa dilakukan dengan menghitung volume masing-masing metode dan kemudian menghitung biayanya. Harga yang digunakan berdasarkan data sekunder dari harga satuan dan penawaran dari pabrik. Hasil analisa ditemukan bahwa volume beton dapat dihemat antara 15% - 25%, tulangan beton lapisan bawah dapat direduksi sampai 100%, sedangkan biaya perancah dapat dikurangi hingga 1/3 dari keperluan pemakaian dengan cara konvensional.Kata kunci: bekisting, floordeck, wiremesh, efesiensi
NEM INFERNO, NEM PARAÍSO: esfera pública e a construção de um conceito de Amazônia (1930-1937)
Authors: Munaro Luís Francisco 
Published: August 2019

A proposta deste artigo é estudar a contribuição literária de um grupo de intelectuais manauaras durante os anos de construção nacional no Governo Provisório e no Governo Constitucional de Getúlio Vargas (1930-1937). Foram selecionados seis nomes que participaram mais ativamente da esfera pública amazônica: Aurélio Pinheiro, Anísio Jobim, Araújo Lima, Carlos Mesquita, Ramayana Chevalier e Arhur Reis, todos homens de imprensa com ativo trânsito nos jornais e produção de livros. Do ponto de vista da análise textual, pretende-se entender como estes autores ponderaram a identidade regional e negociaram a filiação da região no projeto nacional, tratando a Amazônia como um termo relevante do ponto de vista social e político, orientado para o presente e com componente de planejamento futuro.

PALAVRAS-CHAVE: Elite intelectual; Amazonia; Esfera Pública; Manaus; Getúlio Vargas.

ABSTRACT
The proposal of this article is to study the literary and journalistic contribution of a group of Manauara intellectuals during the years of national construction in the Provisional Government and in the Constitutional Government of Getúlio Vargas (1930-1937). Six names that participated more actively in the Amazon public sphere were chosen: Aurélio Pinheiro, Anísio Jobim, Araújo Lima, Carlos Mesquita, Ramayana Chevalier and Arhur Reis, all of them press men with active traffic in the newspapers. From the point of view of the textual analysis, we intend to understand how these authors pondered the regional identity and negotiated the affiliation of the region in the national project, treating the Amazon as a relevant term from the social and political point of view, oriented to the present and with planning component.

KEYWORDS: Intellectual Elite; Amazonia; Public Sphere; Manaus; Getulio Vargas.

RESUMEN
La propuesta de este artículo es estudiar la contribución literaria y periodística de un grupo de intelectuales manauaras durante los años de construcción nacional en el Gobierno Provisional y en el Gobierno Constitucional de Getúlio Vargas (1930-1937). Se seleccionaron seis nombres que participaron más activamente en la esfera pública amazónica: Aurelio Pinheiro, Anísio Jobim, Araújo Lima, Carlos Mesquita, Ramayana Chevalier y Arhur Reis, todos ellos hombres de prensa con activo tránsito en los periódicos. Desde el punto de vista del análisis textual, se pretende entender cómo estos autores ponderaron la identidad regional y negociaron la filiación de la región en el proyecto nacional, tratando a la Amazonia como un término relevante desde el punto de vista social y político, orientado hacia el presente y con componente de planificación futura.

PALABRAS CLAVE: Elite intelectual; Amazónia; Esfera Pública; Manaus; Getúlio Vargas.
TECNOLOGIAS DIGITAIS DE INFORMAÇÃO E COMUNICAÇÃO COMO RECURSO DE MEDIAÇÃO PEDAGÓGICA
Authors: Zacariotti Marluce Evangelista Carvalho , Sousa José Luis dos Santos 
Published: August 2019

A pesquisa buscou diagnosticar a realidade das escolas públicas de Grajaú, Maranhão, quanto ao uso das tecnologias digitais de informação e comunicação (TDIC) no ensino de Ciências. O objetivo foi levantar como as TDIC estão sendo utilizadas nas escolas, pelos professores de Ciências. Realizou-se uma pesquisa bibliográfica e de campo, tendo como sujeitos professores de Ciências e alunos. Aplicou-se um questionário para diagnosticar a realidade das escolas quanto ao uso das TDIC. Concluiu-se que a utilização das TDIC no local pesquisado precisa ser mais explorada e que o professor ainda não está preparado para aproveitar as tecnologias como fator de aprimoramento do processo de ensino e de aprendizagem.

PALAVRAS-CHAVE: Professores; alunos; escola; Tecnologias Digitais de Informação e Comunicação.

ABSTRACT
The research sought to diagnose the reality of public schools in Grajaú, Maranhão, regarding the use of digital information and communication technologies (TDIC). The goal was to get to know how the TDICs are being used in schools by the science teachers. A bibliographical and field research was carried out, having as subjects science teachers and students. A questionnaire was applied to diagnose the reality of schools as regards the use of TDICs. It was concluded that the use of TDICs in the researched area needs to be further explored and that the teacher is not yet ready to take advantage of technologies as a factor to improve the teaching and learning process.
KEYWORDS: Teachers; students; school; Digital Information and Communication Technologies.

RESUMEN
La investigación buscó diagnosticar la realidad de las escuelas públicas de Grajaú, Maranhão, en cuanto al uso de las tecnologías digitales de información y comunicación (TDIC). El objetivo fue conocer como las TDIC están siendo utilizadas en las escuelas, por los profesores de Ciencias. Se realizó una investigación bibliográfica y de campo, teniendo como sujetos profesores de Ciencias y alumnos. Se aplicó un cuestionario para diagnosticar la realidad de las escuelas en cuanto al uso de las TDIC. Se concluyó que la utilización de las TDIC en el local investigado necesita ser más explotada y que el profesor todavía no está preparado para aprovechar las tecnologías como factor de perfeccionamiento del proceso de enseñanza y de aprendizaje.

PALABRAS CLAVE: Profesores; alumnos; escuela; Tecnologías Digitales de Información y Comunicación.
Preoperative Weight Loss for Morbidly Obese Patients Undergoing Total Knee Arthroplasty
Authors: Keeney Benjamin J. , Austin Daniel C. , Jevsevar David S. 
Published: August 2019

Background:
Many surgeons require or request weight loss among morbidly obese patients (those with a body mass index [BMI] of ≥40 kg/m2) before undergoing total knee arthroplasty. We sought to determine how much weight reduction was necessary to improve operative time, length of stay, discharge to a facility, and physical function improvement.

Methods:
Using a retrospective review of cohort data that were prospectively collected from 2011 to 2016 at 1 tertiary institution, we identified 203 patients who were morbidly obese at least 90 days before the surgical procedure and had their BMI measured again at the immediate preoperative visit. All heights and weights were clinically measured. We used logistic and linear regression models that adjusted for preoperative age, sex, year of the surgical procedure, bilateral status, physical function (Patient-Reported Outcomes Measurement Information System [PROMIS]-10 physical component score [PCS]), mental function (PROMIS-10 mental component score [MCS]), and the Charlson Comorbidity Index.

Results:
Of the 203 patients in the study, 41% lost at least 5 pounds (2.27 kg) before the surgical procedure, 29% lost at least 10 pounds (4.54 kg), and 14% lost at least 20 pounds (9.07 kg). Among morbidly obese patients, losing 20 pounds before a total knee arthroplasty was associated with lower adjusted odds of discharge to a facility (odds ratio [OR], 0.28 [95% confidence interval (CI), 0.09 to 0.94]; p = 0.039), lower odds of extended length of stay of at least 4 days (OR, 0.24 [95% CI, 0.07 to 0.88]; p = 0.031), and an absolute shorter length of stay (mean difference, −0.87 day [95% CI, −1.39 to −0.36 days]; p = 0.001). There were no differences in operative time or PCS improvement. Losing 5 or 10 pounds was not associated with differences in any outcome.

Conclusions:
Losing at least 20 pounds before total knee arthroplasty was associated with shorter length of stay and lower odds of facility discharge for morbidly obese patients, even while most patients remained morbidly or severely obese. Although there were no differences in operative time or physical function improvement, this has considerable implications for patient burden and cost reduction. Patients and providers may want to focus on larger preoperative weight loss targets.

Level of Evidence:
Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.
The CU PAO: A Minimally Invasive, 2-Incision, Interlocking Periacetabular Osteotomy
Authors: Mei-Dan Omer , Welton K. Linnea , Kraeutler Matthew J. , Young David A. , Raju Sivashanmugam , Garabekyan Tigran 
Published: August 2019

Background:
The aims of this study were to describe a novel minimally invasive, interlocking periacetabular osteotomy (PAO) for the treatment of hip dysplasia that was developed at our institution and to report on its safety, complications, and early clinical outcomes.

Methods:
This was a prospective longitudinal study of the first 200 consecutive hips that underwent the CU (University of Colorado) PAO, an interlocking osteotomy combining the benefits of the Birmingham interlocking pelvic osteotomy (BIPO) and the Ganz PAO. The technique provides direct visualization of the sciatic nerve during the ischial osteotomy and allows for immediate weight-bearing postoperatively. Demographic characteristics, intraoperative and perioperative parameters, and functional outcomes were documented. All patients underwent hip arthroscopy 3 to 10 days prior to the PAO to address concomitant intra-articular pathology. Mechanical deep venous thrombosis (DVT) prophylaxis was used for 2 weeks postoperatively. Results were stratified to compare the first 100 and the second 100 cases.

Results:
A total of 161 patients (200 hips) underwent primary PAO; mean follow-up was 20 months (range, 3 to 33 months). The mean patient age at the time of surgery was 29.4 years (range, 13 to 55 years). Females accounted for 89% of the patients included in this study. The average length of stay was 4 days. A concomitant proximal femoral derotational osteotomy was performed in 19 hips. The lateral center-edge angle (LCEA) improved from a mean of 18.8° preoperatively to 31.5° postoperatively (p < 0.001). The mean Non-Arthritic Hip Score (NAHS) improved from 56.0 preoperatively to 89.4 at the 24-month follow-up (p < 0.0001). Paresthesias in the distribution of the lateral femoral cutaneous nerve were common (65% at 2 weeks postoperatively) but resolved in 85% of the patients within the first 6 months. There were no sciatic nerve-related complications, deep infections, or DVTs.

Conclusions:
The CU PAO enables corrective realignment of symptomatic acetabular dysplasia with direct visualization of the sciatic nerve, early weight-bearing, cosmetic incisions, and good short-term outcomes.

Level of Evidence:
Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
The Safety of Hip Arthroscopy within 3 Months of an Intra-Articular Injection
Authors: Byrd J.W. Thomas , Bardowski Elizabeth A. , Civils Ashley N. , Parker Sharon E. 
Published: August 2019

Background:
Ultrasound-guided intra-articular hip injections have become a mainstay in the diagnosis and treatment of various hip disorders. Concern arises with regard to the chronological proximity of an injection to subsequent arthroscopy. Thus, the purpose of this study was to report the risk of postoperative infections among patients who have undergone an intra-articular corticosteroid injection within 3 months of hip arthroscopy.

Methods:
In-office, ultrasound-guided, intra-articular hip injections were first performed at this center in 2011. Corticosteroid is used for therapeutic purposes in the presence of painful hip conditions to reduce joint symptoms, either to allow for more effective supervised physical therapy or simply as a last line of nonoperative management. A retrospective review of patient records was performed, identifying all patients who had undergone arthroscopy and had received an intra-articular injection of corticosteroid at this institution within 3 months of the surgical procedure.

Results:
Five hundred patients underwent an ultrasound-guided intra-articular injection of corticosteroid within 3 months of a hip arthroscopy. The mean age was 37.6 years (range, 14 to 74 years), with 112 male patients and 388 female patients. The mean time between the injection and the arthroscopy was 59 days (range, 15 to 92 days). There were no postoperative infections.

Conclusions:
When both the injection and the procedure are performed in a tertiary referral center, an ultrasound-guided intra-articular injection of corticosteroid within 3 months prior to arthroscopy, at a mean time of 59 days, resulted in no postoperative infections among 500 cases and can represent an acceptably low rate of complication. To our knowledge, this is the largest reported series on this subject.

Level of Evidence:
Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
Morphometric and meristic variation in the Atlantic chub mackerel Scomber colias Gmelin, 1789 from the Moroccan coast
Authors: Bouzzammit N. , Ouizgani H.El 
Published: August 2019

Morphometric and meristic characters were used to study the variability between Scomber colias Gmelin, 1789 sampled from five locations in the Moroccan Atlantic coast. Eighteen morphometric measurements were taken using the image processing program, Image j along with seven meristic characters. Univariate analysis of variance (ANOVA) performed by Tukey HSD post-hoc test showed significant differences for 14 standard morphometric measurements. In principal component analysis (PCA),PC1 was resolved as general size and PC2 was resolved as shape differences. Discriminant analysis indicated the existence of four morphometric groups of S. colias with minor overlapping, which suggested that there is a self-recruiting population. The proportion of correctly classified Sidi Ifni (SDF) sample to their original group was 96% and showed clear separation from other groups. We concluded that Sidi Ifni samples are morphologically distinct from S. colias of the other four localities which could be attributed to genetic bias or environmental factors.