bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research of transversal properties of winding basalt plastics based on basalt fiber with experimental lubricants
Authors: Shakirov K M , Sokolov G S , Nelyub V A 
Published: August 2021

Abstract
This article presents the results of a study of the shear strength dependence of basalt plastics on the chemical nature and composition of the developed lubricants for continuous basalt fiber. It is shown that the recipe of lubricants has a significant effect on the shear strength of basalt plastics. It is mentioned that by purposefully selecting and varying the components of the lubricants, it is possible to achieve a significant increase in the shear strength, which is an important factor for basalt plastics for structural purposes.
Cylindrical bending of transversely isotropic composite panels with finite strains
Authors: Dimitrienko Yu I , Gubareva E A , Karimov S B , Yu Kolzhanova D 
Published: August 2021

Abstracts
The article is devoted to solving the problem of cylindrical bending of a flat panel made of a transversely isotropic incompressible composite material with finite deformations. The focus of the article is that in this problem the so-called universal model of constitutive relations is considered, which allows one to obtain solutions to problems simultaneously for several classes of models related to different conjugate pairs of stress-strain tensors. This method was proposed earlier in the works of Yu.I. Dimitrienko. Using this method, the difference in the calculation results, which are obtained using various models of composites with finite strains, is shown.
Modeling Fatigue Damage Accumulation in Power Engine Structures
Authors: Dimitrienko Yu I , Yurin Yu V , Prozorovskiy A A 
Published: August 2021

Abstracts
The article describes the development of a new design technology for power engine structures (PES) hulls of increased reliability, based on the methods of system analysis using computer modeling of damage accumulation in structural elements, as well as the development of technical solutions for creating the PES hull design using new heat-resistant composite carbon-carbon and carbon-ceramic materials. To calculate the accumulation of damage, the chemical criteria of durable strength is used, for numerical calculation of the stress-strain state of structures taking into account creep, an iterative method for solving a three-dimensional problem of thermomechanics using the finite element method is applied. An example of the calculation of a high-pressure structural element, performed in the work, showed the possibility of practical implementation of the proposed technique and its effectiveness, in terms of reducing or replacing experimental studies to substantiate the reliability of structures.
Numerical modelling in problems of thermal control for three-layer structures with defects
Authors: Dimitrienko Yu I , Krasnov I K , Salnikova A A , Yurin Yu V 
Published: August 2021

Abstract
This article describes solutions to the direct and inverse problems of the three-dimensional non-stationary heat conduction problem in a three-layer structure, using the finite element method for the direct problem and the gradient descent method for the inverse problem. A comparison of the FEM-solution and the analytical solution for a solid with a simple geometry is presented. Here are presented solutions of the direct and inverse three-dimensional non-stationary heat conductivity problem for a free three-stage turbine. The accuracy of the found and exact solutions is compared.
Determination of models constants for thermomechanical properties of composites based on experimental data analysis
Authors: Dimitrienko Yu I , Gumirgaliev T R , Epishkina A 
Published: August 2021

Annotation
This article presents an algorithm for finding the constants in the model of changing the thermoelastic properties of polymer composites. The calculation of the constants is based on the processing of the experimentally obtained data. Optimization methods are applied to minimize the discrepancy between the experimental data and the analytical dependence on the constants that need to be found. Also, a method was proposed for determining the constants in the model of density change during destruction. The paper analyzes the effect of high temperatures on the change in density and elastic modulus of composite materials. On the basis of this, an algorithm was constructed for calculating the change in elastic properties up to temperatures of thermal destruction and during thermal destruction. The error between theoretical modeling and experimental data did not exceed 5%.
Assembly of metal-composite compounds by magnetic pulse processing
Authors: Yu Astapov V 
Published: August 2021

Abstract
The increasingly widespread use of composite parts in the industry also requires a special approach to the connections between composite and metal parts. One of these methods of forming permanent joints is magnetic pulse processing, which allows forming joints by acting on a metal part and pressing it on another composite one. Calculated the main electrical parameters of the magnetic pulse forming technology has been developed for manufacturing individual elements and assembly of the application structure, following the device structure is assembled.
Obtaining electrically conductive wear-resistant coatings using cold gas-dynamic spraying method
Authors: Yu Geraschenkova E , Markov M A , Gerashenkov D A , Farmakovsky B V , Kravchenko I N , Yu Bystrov R , Bykova A D 
Published: August 2021

Abstract
This work presents research results of the technology development in applying electroconductive wear-resistant coatings using supersonic cold gas-dynamic spraying method.
Protective properties of oil compositions modified with Cortec VpCI-369
Authors: Knyazeva L G , Tsynagkova L E , Dorokhov A V , Kuriato N A 
Published: August 2021

Abstract
This paper investigated the effectiveness of anticorrosive protection of a number of metals by means of compositions based on petroleum oils modified with the Cortec VpCI-369 composition (Cortec Corporation, USA). The work of adhesion of the studied compositions and their wetting with water were determined. The contributions of individual components of the protective system to the total effectiveness in a chloride solution are estimated using the method of polarization resistance. Oil compositions with Cortec VpCI-369 (3-10 wt.%) show high protective efficiency when applied to structural carbon steel tested in a thermal moisture chamber (98-100%) and under normal conditions (86-96%). In a chloride-containing neutral solution with an exposure time of 456 h, these compositions are effective against the effect of copper and brass.
The stress-strain state evaluation of elementary carbon fibers with metal coatings
Authors: Nelyub V A 
Published: August 2021

Abstract
The results of the stress-strain state study of carbon fibers with applied metal coatings are presented. The Siemens NX PLM software package Parasolid module has been used for the model construction and calculations. It has been assumed that only normal Mises stresses occur in an elementary carbon fiber with a metal coating. The titanium, stainless steel and copper have been used as coating materials. The calculations have been carried out for each type of coating with a change in thickness from 50 to 200 nm. It has been found that the displacement minimum values occur for carbon fiber coated with stainless steel, and there is a decrease in the amount of displacements and stresses with an increase in the metal coating thickness.
Investigation of properties of elementary carbon fibers with different technologies for preparing their surfaces before metallization
Authors: Nelyub V , Fedorov S , Klimovich Yu 
Published: August 2021

Abstract
This paper presents the results of tensile tests of elementary carbon fibers used to make unidirectional carbon tapes LU-P/0,2 and FibArmTape 230/300 and grade GG1200T and GG200T carbon fabric before and after the activation process that precedes the depositing of metal coatings. For activation of carbon tapes and fabrics, two low-temperature plasma units, one pulse unit, and one magnetron sputtering unit were used. The magnetron sputtering unit allowed fibers’ activation before metallization. The influence of activation duration and the type of apparatus for preprocessing on the mechanical strength of carbon fibers was investigated.
Prediction of hardness distribution during SPD process based on FEM simulations: case study of ECAP and HPT processes
Authors: Abd El Aal Mohamed Ibrahim 
Published: August 2021

Abstract
3D finite element method (3D FEM) simulations of equal channel angular pressing (ECAP) and high-pressure torsion (HPT) of Al6061-T6 alloy were carried out and analyzed. 3D FEM results were correlated and compared with those obtained experimentally and theoretically through different mathematical equations. Furthermore, the hardness was estimated using the FEM strain and theoretical strain. The simulations and experimental results were in high conformity with each other. The ECAP load−displacement curves, the HPT load-time curves, and peak loads of FEM and experimental results were close to each other. FEM simulations provided clear strain distribution maps in different planes that fully explain the plastic deformation characteristics and homogeneity in the ECAP and HPT processes. FEM effective strain results have high reliability with a slight deviation from those theoretically estimated through the mathematical equations. The hardness distribution and the strain contours maps were in good agreement, confirming the quality of the FEM results. Hardness values calculated based on FEM effective strain indicate a deviation range of 0.96%–8.8% from experimental results that support the reliability of the FEM results. Microstructure results support hardness increase because of the effect of the grain refinement after ECAP and HPT processing.
Case report of an acute coronary syndrome in a patient with artery coronary fistulae
Authors: Romero-Castro María José , Unzué Leire , García Eulogio , Fernández-Friera Leticia 
Published: August 2021

Abstract

Background
Coronary artery fistulae are rare vascular anomalies. Although they are usually asymptomatic, the presence of symptoms might present a challenge in the diagnostic and therapeutic management.

Case summary
We present a patient with chest pain whose initial tests were normal, but coronary artery fistulae were found. Single-photon emission computed tomography test showed ischaemia due to coronary artery fistulae and cardiac computed tomography helped in the planning of the percutaneous closure.

Discussion
CCT is emerging as an optimal non-invasive tool to characterise the morphology and course of coronary artery fistulae and may be essential for its accurate diagnosis and planning for percutaneous closure.
Eliminating ‘Aesthetics’ from Copyright Law: The Aftermath of Cofemel
Authors: Güven Koray 
Published: August 2021

Abstract
The recent Cofemel judgment of the Court of Justice of the European Union extended the European Union’s (EU) originality criterion (i.e. the author’s own intellectual creation) to the realm of works of applied art. The Court excluded ‘aesthetically significant visual effect’ as a condition of copyright protection. It was condemned as subjective and incompatible with the EU originality criterion. The decision may signal a shift in several national copyright laws, under which requirements relating to ‘aesthetics’ are laid down as a condition to acquire protection. This article will demonstrate that the ‘aesthetics criterion’, as it emerged historically and has been employed in national copyright laws, is associated with a different meaning than it conveys at first glance. The aesthetics criterion designates the elbow room remaining to the author after functional constraints have been taken into account, and thus represents a form of the functionality doctrine in the domain of copyright law. However, to some extent it also excludes – though not uniformly – commonplace designs from the scope of copyright protection. Against this background, this article suggests that the aesthetics criterion can arguably be reconciled with the EU originality criterion. The aesthetics criterion represents a balance struck between the need for copyright protection in the field of applied arts, on the one hand, and competition, on the other. In order not to upset this careful balance, a robust application of the EU originality criterion is advocated, precluding protection not only to functionality, but also to commonplace creations.
Eyes Toward Tomorrow Program Enhancing Collaboration, Connections, and Community Using Bioinspired Design
Authors: Full Robert J , Bhatti H A , Jennings P , Ruopp R , Jafar T , Matsui J , Flores L A , Estrada M 
Published: August 2021

Abstract
The goal of our Eyes Toward Tomorrow Program is to enrich the future workforce with STEM by providing students with an early, inspirational, interdisciplinary experience fostering inclusive excellence. We attempt to open the eyes of students who never realized how much their voice is urgently needed by providing an opportunity for involvement, imagination, invention, and innovation. Students see how what they are learning, designing, and building matters to their own life, community, and society. Our program embodies convergence by obliterating artificially created, disciplinary boundaries to go far beyond STEM or even STEAM by including artists, designers, social scientists, and entrepreneurs collaborating in diverse teams using scientific discoveries to create inventions that could shape our future. Our program connects two recent revolutions by amplifying Bioinspired Design with the Maker Movement and its democratizing effects empowering anyone to innovate and change the world. Our course is founded in original discovery. We explain the process of biological discovery and the importance of scaling, constraints, and complexity in selecting systems for bioinspired design. By spotlighting scientific writing and publishing, students become more science literate, learn how to decompose a biology research paper, extract the principles, and then propose a novel design by analogy. Using careful, early scaffolding of individual design efforts, students build the confidence to interact in teams. Team building exercises increase self-efficacy and reveal the advantages of a diverse set of minds. Final team video and poster project designs are presented in a public showcase. Our program forms a student-centered creative action community comprised of a large-scale course, student-led classes, and a student-created university organization. The program structure facilitates a community of learners that shifts the students' role from passive knowledge recipients to active co-constructors of knowledge being responsible for their own learning, discovery, and inventions. Students build their own shared database of discoveries, classes, organizations, research openings, internships, and public service options. Students find next step opportunities so they can see future careers. Description of our program here provides the necessary context for our future publications on assessment that examine 21st century skills, persistence in STEM, and creativity.
Effect of a carbohydrase admixture in growing pigs fed wheat-based diets in thermoneutral and heat stress conditions
Authors: Oladele Paul , Li Enkai , Lu Hang , Cozannet Pierre , Nakatsu Cindy , Johnson Timothy , Adeola Olayiwola , Ajuwon Kolapo M 
Published: August 2021

Abstract
The efficacy of exogenous carbohydrases in pig diets has been suggested to depend on enzyme activity and dietary fiber composition, but recent evidence suggests other factors such as ambient temperature might be important as well. Therefore, we investigated the effect of heat stress (HS) on the efficacy of a multienzyme carbohydrase blend in growing pigs. Ninety-six (barrows: gilts; 1:1) growing pigs with initial body weight (BW) of 20.15 ± 0.18 kg were randomly assigned to six treatments, with eight replicates of two pigs per pen in a 3 × 2 factorial arrangement: three levels of carbohydrase (0, 1X, or 2X) at two environmental temperatures (20 °C or cyclical 28 °C nighttime and 35 °C day time). The 1X dose (50 g/tonne) provided 1,250 viscosimetry unit (visco-units) endo-β-1,4-xylanase, 4,600 units α-l-arabinofuranosidase and 860 visco-units endo-1,3(4)-β-glucanase per kilogram of feed. Pigs were fed ad libitum for 28 d and 1 pig per pen was sacrificed on day 28. There was no enzyme × temperature interaction on any response criteria; thus, only main effects are reported. Enzyme treatment quadratically increased (P &lt; 0.05) BW on day 28, average daily gain (ADG) (P &lt; 0.05), and average daily feed intake (ADFI) (P &lt; 0.05) with the 1X level being highest. HS reduced the BW at day 14 (P &lt; 0.01) and day 28 (P &lt; 0.01), ADG (P &lt; 0.01), and ADFI (P&lt;0.001). There was a trend of increased feed efficiency (G:F) (P &lt; 0.1) in the HS pigs. HS increased apparent jejunal digestibility of energy (P &lt; 0.05) and apparent ileal digestibility of calcium (P &lt; 0.01). At day 1, HS reduced serum glucose (P &lt; 0.001) but increased nonesterified fatty acid (P &lt; 0.01). In the jejunum, there was a trend of increased villi height by carbohydrases (P &lt; 0.1), whereas HS reduced villi height (P &lt; 0.05). HS increased the jejunal mRNA abundance of IL1β in the jejunum (P &lt; 0.001). There was a trend for a reduction in ileal MUC2 (P &lt; 0.1) and occludin (P &lt; 0.1) by HS, and a trend for increased PEPT1 (P &lt; 0.1). There was no effect of HS on alpha diversity and beta diversity of the fecal microbiome, but there was an increase in the abundance of pathogenic bacteria in the HS group. In conclusion, HS did not alter the efficacy of carbohydrases. This suggests that carbohydrases and HS modulate pig performance independently.
Image-guided Localization Techniques for Nonpalpable Breast Lesions: An Opportunity for Multidisciplinary Patient-centered Care
Authors: Davis Katie M , Raybon Courtney P , Monga Natasha , Waheed Uzma , Michaels Aya , Henry Cameron , Spalluto Lucy B 
Published: August 2021

AbstractSelection of a localization method for nonpalpable breast lesions offers an opportunity for institutions to seek multidisciplinary input to promote value-based, patient-centered care. The diverse range of nonpalpable breast and axillary pathologies identified through increased utilization of screening mammography often necessitates image-guided preoperative localization for accurate lesion identification and excision. Preoperative localization techniques for breast and axillary lesions have evolved to include both wire and nonwire methods, the latter of which include radioactive seeds, radar reflectors, magnetic seeds, and radiofrequency identification tag localizers. There are no statistically significant differences in surgical outcomes when comparing wire and nonwire localization devices. Factors to consider during selection and adoption of image-guided localization systems include physician preference and ease of use, workflow efficiency, and patient satisfaction.
Climate Disruption in Canadian Constitutional Law: References Re Greenhouse Gas Pollution Pricing Act
Authors: Stacey Jocelyn 
Published: August 2021

Abstract
This analysis considers the Supreme Court of Canada’s decision in References re Greenhouse Gas Pollution Pricing Act, 2021 SCC 11, in which a majority of the Court upheld as constitutional national carbon pricing legislation. The decision presents an excellent illustration of the legally-disruptive nature of climate change. Illustrating that nothing is static in a climate disrupted world—including constitutional law—this article identifies three shifts the Court makes in relation to climate disruption. First, the decision represents a shift away from climate denialism towards a judicial willingness to confront the environmental, social and legal implications of climate change for Canada. Second, the majority embraces and perhaps strengthens a ‘culture of justification’ in climate decision-making. Third—and more tentatively—the majority moves beyond the erasure of Indigenous peoples from Canadian federalism but still yet fails to engage with Indigenous laws and jurisdiction as part of Canada’s constitutional response to climate change.
Association of tensor fascia lata hypertrophy and fatty infiltration in the presence of abductor tendon tears: a radiographic study
Authors: Quinn Matthew , Levins James , Mojarrad Mohammadali , O’Donnell Ryan , DeFroda Steven , Haggerty Erin , Evangelista Peter , Tabaddor Ramin 
Published: August 2021

ABSTRACT
Hip abductor tendon tears of the gluteus medius and minimus are becoming a well-recognized source of pain and dysfunction, primarily in middle-age females. Like the rotator cuff, fatty infiltration (FI) can occur after tearing of these tendons. While the association of TFL hypertrophy after abductor tendon tears has been established, its association with FI has not been well studied. Our hypothesis is that hypertrophy of the TFL will be associated with FI of the abductors. All patients &gt;18 years old undergoing primary surgical repair for a confirmed tears on MRI, without a history of prior hip surgery or osteoarthritis, were included. The following measurements were obtained from MRI: TFL cross-sectional area, TFL:sartorius volume ratio, and modified Goutallier grade of gluteus medius and minimus. Seventy patients met inclusion criteria and were divided in two groups, those with (n = 28) and those without FI (n = 42) of the abductors. The FI group was on average older (65 versus 58 years, P &lt; 0.00016). TFL hypertrophy and TFL:sartorius volume ratio were significantly associated with FI (P= 0.00069). Following abductor tendon tear and subsequent FI, there exists significant TFL hypertrophy in patients without a prior history of hip surgery in our patient cohort.
Statewide Efficacy Assessment of Insect Growth Regulators Against Aedes albopictus (Diptera: Culicidae) in Sabah, Malaysia: An Alternative Control Strategy?
Authors: Elia-Amira N M R , Chen C D , Low V L , Lau K W , Haziqah-Rashid A , Amelia-Yap Z H , Lee H L , Sofian-Azirun M 
Published: August 2021

Abstract
The efficacy of three groups of insect growth regulators, namely juvenile hormone mimics (methoprene and pyriproxyfen), chitin synthesis inhibitors (diflubenzuron and novaluron), and molting disruptor (cyromazine) was evaluated for the first time, against Aedes albopictus Skuse (Diptera: Culicidae) larvae from 14 districts in Sabah, Malaysia. The results showed that all field populations of Ae. albopictus were susceptible towards methoprene, pyriproxyfen, diflubenzuron, novaluron, and cyromazine, with resistance ratio values ranging from 0.50–0.90, 0.60–1.00, 0.67–1.17, 0.71–1.29, and 0.74–1.07, respectively. Overall, the efficacy assessment of insect growth regulators in this study showed promising outcomes and they could be further explored as an alternative to conventional insecticides.