bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design and characterisation of ex situ bulk MgB2 superconductors containing a nanoscale dispersion of artificial pinning centres
Authors: Matthews G A B , Liu J , Grovenor C R M , Grant P S , Speller S 
Published: January 2020

Abstract
MgB2 pellets containing a nanoscale dispersion of artificial pinning centres have been successfully manufactured through a powder metallurgy route based on the oxide dispersion strengthened (ODS) concept more usually used for steels and superalloys. Commercial MgB2 powder and Y2O3 nano-powder were mechanically alloyed in a high energy planetary ball mill and consolidated using the field assisted sintering technique. The composite powders were ball milled for different times up to 12 h and characterised by means of particle size analysis, x-ray diffraction (XRD) and scanning transmission electron microscopy (STEM). The microstructure and superconducting properties were characterised by density, XRD, STEM and magnetic property measurements. The powder microstructure comprised Y2O3 particles dissolved into the MgB2 matrix. After consolidation there was a near-uniform dispersion of precipitated YB4 and MgO particles. A bulk 0.5 wt% Y2O3-MgB2 composite showed the best superconducting performance with a significant improvement in J

c
at high field compared with unmodified MgB2, and only a small reduction in T

c
. The results suggest that the ODS concept is promising to improve the superconducting properties of MgB2.
Phase diagrams of polymer-containing liquid mixtures with a theory-embedded neural network
Authors: Nakamura Issei 
Published: January 2020

Abstract
We develop a deep neural network (DNN) that accounts for the phase behaviors of polymer-containing liquid mixtures. The key component in the DNN consists of a theory-embedded layer that captures the characteristic features of the phase behavior via coarse-grained mean-field theory and scaling laws and substantially enhances the accuracy of the DNN. Moreover, this layer enables us to reduce the size of the DNN for the phase diagrams of the mixtures. This study also presents the predictive power of the DNN for the phase behaviors of polymer solutions and salt-free and salt-doped diblock copolymer melts.
Assessment and Inspection of the Technical Condition of Monolithic Reinforced Structures in Transportation Infrastructure Facilities
Authors: Topchiy D , Bolotova A 
Published: January 2020

Abstract
This article gives a short description of an inspection program for concrete and reinforced concrete structures and provides a survey of complex transportation infrastructure facilities on the basis of this algorithm. It contains data on the technical condition of monolithic reinforced concrete load bearing structures used in transportation infrastructure projects obtained by the authors from research re-ports on construction quality monitoring produced by the Scientific Research and Testing Center “MGSU STROY-TEST”. Generalization, systematization and analysis of the available data have identified typical damage zones for concrete and reinforced concrete structures. Research findings have identified the need for developing integrated quality assessment and forecasting methods that can be employed in monolithic construction to prevent accidents. These methods will enable evaluation of accident-related risks using the probabilistic logic approach, probability theory theorems and decision-making under uncertainty. Analysis of the causes of defects and damage in concrete and reinforced concrete structures in monolithic construction is today an urgent task. The scale of the problems of reliability and safety of buildings and structures caused by repeated errors in their production and operation, cause significant material damage, injury and death.
On stability of slopes in mountain zones. Case study
Authors: Sagdullayeva D A , Maxmudova Sh A , Adilov F F , Abirov R A , Khazratkulov I O , Nasirov I A 
Published: January 2020

Abstract
Stability of railway roadbed in mountain area are considered in proposed issue. Real object in new railway with taking comprehensive analysis of geological data in site and morphology of slide slopes in seismic prone area was investigated.
Modeling of kinetics of corrosion cracking of metals using the long durability theory by A.R. Rzhanitsyn
Authors: Mavzovin V S , Ovchinnikov I G 
Published: January 2020

Abstract
It has been proposed to model the kinetics of corrosion cracking of metals with the theory of damage accumulation, because corrosion cracking is a process that secretly develops in the material of structures, and the use of an approach based on introducing additional structural parameters (such as the damage parameter) into the number of mechanical variables is justified. An analysis of various models of damage showed that the use of the apparatus of the theory of damage accumulation by Kachanov – Rabotnov to describe the process of corrosion cracking is not effective enough, since in this case the behavior of the material at large stresses and short time intervals is incorrectly described. To simulate corrosion cracking, it is proposed to use the A.R. Rzhanitsyn theory, which defines corrosion cracking as a gradual decrease in the ultimate resistance of a material caused by the influence of a corrosive medium and stress state. Several types of the corrosion cracking equation are considered using the instantaneous strength parameter A.R. Rzhanitsyn, a technique was developed for identifying these equations. A technique is proposed for constructing equations describing the kinetics of the change in instantaneous strength from the information on the corrosion cracking curve obtained from experiment.
Phenomenon of cracks in chimney walls
Authors: Ubysz Andrzej , Tamrazyan Ashot G 
Published: January 2020

Abstract
Cracked walls of chimneys have a serious impact on their durability. There are many reasons for chimney cracks. Among them, the most important is the impact of the environment in which the chimneys operate, the method of concrete care, the amount of reinforcement in the walls of the chimneys, the quality of concrete and the first start-up of the chimney. Cracks reduce the chimney’s stiffness and cause increased corrosion of reinforcing steel and concrete. Repairs of scratched chimneys are most often reduced to injection of cracks and replacement of concrete cover.
Estimation of modular green roof systems installation using the method of chronometry measurements
Authors: Korol E A , Shushunova N S 
Published: January 2020

Abstract
Due to the experimental studies using the method of timing measurements, the temporal values of technological operations for the installation of modular landscaping systems were calculated and technological works that have a great influence on the total device construction time were determined. A comparative analysis of the complexity of the device layers of the used coating showed that the most time-consuming is the process of laying paving slabs - 45 people-hours / 100 sq.m. (80% of the total complexity of the device layers of the used coating). Technological processes and operations associated with the installation of the pavement with the use of paving slabs under pedestrian load are more labor-intensive compared to the installation of landscaping systems. The average value of the complexity of the device operating cover for pedestrian load is 56.7 people-hours / 100 sq.m., while the average value of the complexity of the device of the coating with peeling systems is 15.6 people-hours / 100 sq.m., which is 28% lower than the complexity of the device operating cover for pedestrian loading.
Stability Investigation of a Stiffened Plate by Using Numerical Methods
Authors: Manuylov G A , Kosytsyn S B , Grudtsyna I E 
Published: January 2020

Abstract
the influence of initial geometric imperfections of a stiffened plate under longitudinal compression on the double critical buckling loads had been studied in this paper. An appropriate bifurcation diagram and bifurcation set were plotted. The results obtained showed that sensitivity of critical load to any initial geometric imperfections is actually insignificant (max 22% loss of the critical load) with specific geometric plate parameters and stiffeners selected.
Experimental study of the aerodynamic effects on the monument
Authors: Churin P S , Fedosova A N , Egorychev O O 
Published: January 2020

Abstract
Chapter 1 of this article discusses the need for aerodynamic research for sculptural structures, and also presents the purpose of these studies. Chapter 2 provides a description of the methods used to study the effects of wind on construction projects carried out on the basis of the National Research Moscow State University of Civil Engineering. Chapter 3 presents a direct study of the wind impact on the monument, as well as the results of tests and numerical simulations. Chapter 4 contains conclusions that were formulated on the basis of the work done.
The use of reduced models in the reliability analysis of deformable systems with dynamic vibration dampers
Authors: Gerber Yu A , Sebeshev V G 
Published: January 2020

Abstract
The transformations of the initial design models of complex constructions and structures as the multi-degrees of freedom (DOF) systems is advantageous to use in order to reduce the amount of computational procedures in their dynamic analysis. This becomes particularly relevant in the reliability analysis requiring multiple recalculations for taking into account the stochastic properties of system parameters and impacts. The paper presents a technique based on known approaches of reduction the original multi-DOF system to an equivalent generalized design model with one degree of freedom. Various combinations of the equivalence conditions for the original system and the generalized model, including equalities of their natural frequencies, characteristic displacements or kinetic energies, were used to determine the modelling lumped mass and the corresponding rigidity of the design model. An algorithm for the probabilistic properties evaluation of the design model characteristics has been developed. The verification of the correctness of the proposed model in the area of tuning in to the workload frequency is performed. The quantitative results of solving the model problems in reliability calculations of multi-DOF structures with dynamic vibration dampers (DVD) are presented. The proposed approach allows us to simplify the process of selecting a single-mass DVD taking into account reliability requirements.
Complex frequency characteristic and Green’s function for cantilever beam under longitudinal oscillations
Authors: Kalashnikov Sergey Yu , Gurova Elena V , Kalashnikova Yuliya S , Kuramshin Renat Kh , Retling Ernst V , Starov Alexander V 
Published: January 2020

AbstractRelevant objective of this article is elaboration of methods of efficient determination of the dynamic characteristics of the materials both within the framework of well-known and classical models as well as within the advanced ones in the context of interaction with the environment under the impact of external dynamic loads. In the present work free and forced oscillations are studied with a help of spectral methods what allows to compare theoretical results with experimental data, obtained by other authors. The key point of the work is theoretical determination of the proper functions of the oscillatory system, its frequency characteristic using Green’s function. We examine longitudinal oscillations, caused by the substitute load, which provokes oscillations of a sound spectrum. Univariate character of the task is determined by the linearity organization of the longitudinal oscillations of a beam. The oscillations are modeled with a help of the substitute load, which is a subject to Dirac impulse function, which belongs to a class of generalized functions. The obtained solution makes it possible to use the proposed approach in order to determine frequency characteristics in the acoustic spectrum, taking into account that the oscillations are included in a full frequency spectrum and can be used for an adequate valuation of the possibility of the appearance of resonance phenomena.
Quality characteristics and hypoglycaemic effects of rice bread containing Helianthus tuberosus powder
Authors: Park Kang-Hyun , Wahyono A , Duong N T T , Kang W W 
Published: January 2020

Abstract
This study aimed to investigate the quality characteristics of rice bread containing Helianthus tuberosus powder that shows excellent physiological functions, and the effect of its intake on blood glucose. Five samples were tested, H. tuberosus powder 5% (HRB1), 10% (HRB2), 15% (HRB3), 20% (HRB4) and control. HRB2 had the highest specific volume. The moisture content of rice bread tended to increase as the concentration of H. tuberosus powder increased. The L value and crumb colour value tended to decrease significantly with an increasing amount of H. tuberosus powder, whereas the b value was increased significantly. Hardness was the lowest in HRB2 and HRB3. In sensory evaluation, there was no significant difference in the appearance among the four groups. HRB1 had the highest values for flavour, texture, and overall evaluation. Taste showed no significant difference until HRB1. Rice bread samples with 15% HRB were selected to measure the hypoglycaemic effect of H. tuberosus compared to that of control rice bread (RB) and wheat bread (WB). The results showed significantly different blood glucose levels (p < 0.05) among treatments. Calculation of the glycaemic index (GI) showed HRB to have the lowest GI. As a result, rice bread containing H. tuberosus powder is expected to increase insulin sensitivity in diabetes.
Inspiration of reinforcements, manufacturing methods, and microstructural changes on wear behavior of metal matrix composites—a recent review
Authors: Hariharasakthisudhan P , Rajan B Surya , Sathickbasha K 
Published: January 2020

Abstract
The Metal Matrix Composites (MMCs) are increasingly replacing the commercial alloys in engineering components and undergoing intense analysis in the development of advanced composite structures. The metal matrix composites exhibit superior mechanical and tribological behavior than alloys in wear critical applications. Profound research works have been carried out in manufacturing the MMCs for improved friction and wear behavior. This study highlights the recent investigations from the perspective of wear behavior of MMCs. The effect of reinforcements and manufacturing processes of composites on wear behavior is elaborated. The significance of mechanical factors such as normal load, sliding speed and sliding distance is explained. The wear mechanisms observed in MMCs and studies on sub surface damages of composites are reported.
Study on the effect of chlorine on the growth of CH3NH3PbI3−xClxcrystals
Authors: Song Tingyu , Gao Lifeng , Wei Qi , Yu Limin , Wang Shiwei , Zhang Mingyao , Zhao Lisha , Cai Yanhua 
Published: January 2020

AbstractOrganic-inorganic hybrid halide perovskites have attracted great interest for scientists and entrepreneurs due to their intrinsic properties and considerable business prospects in recent years. Perovskite single crystal can determine its properties well because of no grain boundaries for itself, so it is necessary to study the nucleation and growth process of perovskite crystals. In this work, CH3NH3PbI3−xClxsingle crystals with about 10 mm sized are prepared. It’s found that chlorine can restrict the nucleation and slow crystallization during the perovskite grown process. Moreover, the number of perovskite crystals can be controlled by tuning the content of chlorine in the precursor solutions, because chlorine can restrict the perovskite crystal nucleation as an inhibitor.
A variation on Hölder–Brascamp–Lieb inequalities
Authors: O’Neill Kevin 
Published: January 2020

The class of Hölder–Brascamp–Lieb inequalities is a collection of multilinear inequalities generalizing a convolution inequality of Young and the Loomis–Whitney inequalities. The full range of exponents was classified in a paper of Bennett, Carbery, Christ, and Tao [Math. Res. Lett. 17 (2010), no. 4, 647–666]. In a setting similar to that of Ivanisvili and Volberg [J. Lond. Mat. Sci (2) (2015), no. 3, 657–674], we introduce a notion of size for these inequalities which generalizes

L
p

L^p

norms. Under this new setup, we then determine necessary and sufficient conditions for a generalized Hölder–Brascamp–Lieb-type inequality to hold and establish sufficient conditions for maximizers to exist when the underlying linear maps match those of the convolution inequality of Young.
Symptoms of mood disorders in family carers of older people with dementia who experience caregiver burden: a network approach
Authors: França Alex Bacadini , Gordon Adam Lee , Samra Rajvinder , Rodolpho Duarte Evelise Saia , Jacinto Alessandro Ferrari 
Published: January 2020

AbstractBackgroundinformal carers of people with dementia are at greater risk of anxiety and depressive disorders if they find caregiving to be a burden. The aim of this study was to use a network analysis of cross-sectional data to investigate the relationships between anxiety and depressive symptoms in family carers of older people with dementia who experience burden.Methodssixty family carers exhibiting high levels of burden using the Zarit Burden Interview were included in the study. Participants completed the Hospital Anxiety and Depression Scale. The network analysis identified the depression and anxiety symptom network using features including a topological graph, network centrality metrics and community analysis. The network was estimated through the graphical LASSO technique in combination with a walktrap algorithm to obtain the clusters within the network and the connections between the nodes (symptoms). A directed acyclic graph was generated to model symptom interactions.Resultsthe resulting network architecture shows important bridges between depression and anxiety symptoms. Lack of pleasure and loss of enjoyment were identified as potential gateway symptoms to other anxiety and depression symptoms and represent possible therapeutic targets for psychosocial interventions. Fear and loss of optimism were highly central symptoms, indicating their importance as warning signs of more generalised anxiety and depression.Conclusionsthis network analysis of depressive and anxiety symptoms in overburdened family carers provides important insights as to what symptoms may be the most important targets for behavioural interventions.
The Rural VA Multi-Center Medication Reconciliation Quality Improvement Study (R-VA-MARQUIS)
Authors: Presley Caroline A , Wooldridge Kathleene T , Byerly Susan H , Aylor Amy R , Kaboli Peter J , Roumie Christianne L , Schnipper Jeffrey L , Dittus Robert S , Mixon Amanda S 
Published: January 2020

Abstract

Purpose
High-quality medication reconciliation reduces medication discrepancies, but smaller hospitals serving rural patients may have difficulty implementing this because of limited resources. We sought to adapt and implement an evidence-based toolkit of best practices for medication reconciliation in smaller hospitals, evaluate the effect on unintentional medication discrepancies, and assess facilitators and barriers to implementation.

Methods
We conducted a 2-year mentored-implementation quality improvement feasibility study in 3 Veterans Affairs (VA) hospitals serving rural patients. The primary outcome was unintentional medication discrepancies per medication per patient, determined by comparing the “gold standard” preadmission medication history to the documented preadmission medication list and admission and discharge orders.

Results
In total, 797 patients were included; their average age was 68.7 years, 94.4% were male, and they were prescribed an average of 9.6 medications. Sites 2 and 3 implemented toolkit interventions, including clarifying roles among clinical personnel, educating providers on taking a best possible medication history, and hiring pharmacy professionals to obtain a best possible medication history and perform discharge medication reconciliation. Site 1 did not implement an intervention. Discrepancies improved in intervention patients compared with controls at Site 3 (adjusted incidence rate ratio [IRR], 0.55; 95% confidence interval [CI], 0.45–0.67) but increased in intervention patients compared with controls at Site 2 (adjusted IRR, 1.22; 95% CI, 1.08–1.36).

Conclusions
An evidence-based toolkit for medication reconciliation adapted to the VA setting was adopted in 2 of 3 small, rural, resource-limited hospitals, resulting in both reduced and increased unintentional medication discrepancies. We highlight facilitators and barriers to implementing evidence-based medication reconciliation in smaller hospitals.
Comparing the Effects of Governmental and Local Family Intervention Projects on Social Work Practices in Norway: A Cluster-Randomised Study
Authors: Malmberg-Heimonen Ira , Tøge Anne Grete 
Published: January 2020

AbstractIncreased child poverty in Europe has urged the need for poverty alleviating measures, such as family intervention projects. In this project, family coordinators follow-up low-income families on multiple areas. The cluster-randomised evaluation compares effects of governmental and local family intervention projects on social work practices in Norway. Of the twenty-nine participating Labour and Welfare offices, fifteen were randomised to the experimental condition and received the governmental model for comprehensive follow-up (HOLF) model, including manuals, schemes for follow-up work and supervision structures. The fourteen offices randomised to the control group developed local models for the follow-up. The data comprise baseline (n = 58) and eighteen-month follow-up questionnaires to family coordinators. Effects on goal-focused meetings, relational skills, empowering and comprehensive follow-up processes and the coordination of services were measured. After adjusting for the nested structure of the data in a two-level model, the findings demonstrate that family coordinators from experimental group offices achieved more goal-focused meetings (p &lt; 0.001) and demonstrated more relational skills (p = 0.011), compared to family coordinators from control group offices. Results demonstrate that the HOLF model increased the quality of the follow-up when compared to locally developed family intervention projects. The findings are discussed in the context of social work with families in poverty.
Frequency- and State-Dependent Network Effects of Electrical Stimulation Targeting the Ventral Tegmental Area in Macaques
Authors: Murris Sjoerd R , Arsenault John T , Vanduffel Wim 
Published: January 2020

Abstract
The ventral tegmental area (VTA) is a midbrain structure at the heart of the dopaminergic system underlying adaptive behavior. Endogenous firing rates of dopamine cells in the VTA vary from fast phasic bursts to slow tonic activity. Artificial perturbations of the VTA, through electrical or optogenetic stimulation methods, generate different and sometimes even contrasting behavioral outcomes depending on stimulation parameters such as frequency, amplitude, and pulse width. Here, we investigate the global functional effects of electrical stimulation frequency (10, 20, 50, and 100 Hz) of the VTA in rhesus monkeys. We stimulated 2 animals with chronic electrodes, either awake or anesthetized, while concurrently acquiring whole-brain functional magnetic resonance imaging (fMRI) signals. In the awake state, activity as a function of stimulation frequency followed an inverted U-shape in many cortical and subcortical structures, with highest activity observed at 20 and 50 Hz and lower activity at 10 and 100 Hz. Under anesthesia, the hemodynamic responses in connected brain areas were slightly positive at 10 Hz stimulation, but decreased linearly as a function of higher stimulation frequencies. A speculative explanation for the remarkable frequency dependence of stimulation-induced fMRI activity is that the VTA makes use of different frequency channels to communicate with different postsynaptic sites.