bluuebunny/crossref_metadata_2025_split huggingface dataset:
Practical experience of construction of concrete pavement using non-conditional aggregates
Authors: Krivenko P , Kovalchuk O , Boiko O 
Published: December 2019

Abstract
The ways of involving iron ore tailings in road construction are shown in this paper on example of alkali-activated slag cements used as a binding material. The results of the study showed that in case of the alkali-activated slag cements the compacted concrete mixtures for bases could incorporate up to 40 % of iron ore tailings, and with addition of up to 10 % of fly ash by mass – up to 60 % by mass with providing the required compressive strength (>2 MPa) and coefficient of softening (in water) (not lower than 0.8). The results suggested to show that with increase in quantities of the alkaline component the strength tended to increase, and that addition of fly ash was favourable in terms of consistency of the concrete mixture and time of workability retention. The concrete with 100 % replacement of fine aggregate by iron ore tailings exhibited compressive strength of 30 MPa and the concrete mixture had a consistency of classes S3-S4 as per EN 206-1:2000. This concrete mixture of optimal composition was used as paving in the construction of a pilot road (length 50 m, width 4 m, and thickness 0.3 m) in Qianxi (Tianshan, P.R.China).
Alkali-activated Portland cement with adjustable proper deformations for anchoring application
Authors: Krivenko P V , Rudenko I I , Petropavlovskyi O M , Konstantynovskyi O P , Kovalchuk A V 
Published: December 2019

Abstract
The application of alkali-activated Portland cement (hereinafter AAPC) for anchoring grouts was investigated with obtaining of non-shrinking high performance cementing systems. The AAPC system “ordinary Portland cement clinker – sodium metasilicate” was modified by the complexes of mineral and organic compounds to ensure specified properties of anchoring grouts. It was revealed that the most effective multifunctional additives are represented by the system “salt-electrolyte – surfactant”. Alongside with slowing down of AAPC paste setting time, the effect of compensated shrinkage of AAPC mortar, i.e. expansion within 0.062 mm/m and slight shrinkage within 0.017 mm/m, was ensured when Na2SO4 and NaNO3 were used in the mentioned system respectively. The effect of compensated shrinkage is explained by greater crystallization of hydrosilicates and hydroaluminates, additional formation of sulfate-containing sodium-calcium hydroaluminate (for Na2SO4-based system) and crystalline calcium hydronitroaluminate (for NaNO3-based system). The advantages of the modified AAPC for anchoring application are indicated in the paper.
Research of plywood quality by acoustic methods
Authors: Pinchevska O O , Baranova O S , Gorbachova O Y , Gandzuk V M 
Published: December 2019

Abstract
Traditionally, for composite materials, glued wood and solid wood are used nondestructive methods of control that take into account the specific features of the object. Plywood is a non-metal anisotropic material of complex structure, so most non-destructive testing methods, such as magnetic and eddy current methods are excluded. For choosing a method, it should also be borne in mind that plywood is a large product and may have significant size defects. The shock method is easier to implement than other non-destructive testing methods, so it can be considered effective for plywood defectoscopy. The existing classical shock method is carried out by the absolute values of the deviations of the characteristics of the oscillatory processes of the plywood. Changing the variable factors of plywood may reduce the accuracy of the device being implemented. Therefore, a technique for improving the shock method by measuring the relative characteristics of the oscillation process was developed. Comparison with the known, most accurate ultrasonic method of control revealed that the highest correlation with ultrasound has such a parameter of the shock sensor as the coefficient of harmonic distortion, which gives reason to recommend the shock method for determining the area defect plywood.
The factors defining the efficiency of earthed shields made of electroconductive cementing compositions for the electrocorrosion protection
Authors: Pluhin O A , Plugin D A , Kasianov V V , Skoryk O O , Nykytynskyi A V 
Published: December 2019

Abstract
The factors that define the efficiency of earthed coating shields made of the Portland cement-based electroconductive cementing composition were experimentally studied to provide the electrocorrosion protection. It was established that the current intensity is increased by the three orders of magnitude as the current flows through the water-saturated earthed coating shield made of the Portland cement-based electroconductive composition. This fact confirms the feasibility of the use of such shields to drain the leakage currents that are considerably increased achieving unsafe values especially in wet weather. It was also established that protective shield properties depend on the ratio of the contact area of the coating-shielded steel earth electrode to the area of entire coating shield. As this ratio is increased the intensity of the current flowing through the structure reinforcement and concrete is decreased and the intensity of current flowing through the earthed coating shield is increased. It confirms the efficiency of the use of earthed coating shields made of the Portland cement-based electroconductive compositions to provide the electrocorrosion protection caused by leakage currents, for example for such structures as railway d. c. current-electrified passenger platforms.
Calculations of exhaust emissions produced by vehicle with petrol engine in urban area
Authors: Šarkan B , Kuranc A , Kučera Ľ 
Published: December 2019

AbstractThe paper deals with the method of calculating exhaust emissions of a passenger vehicle during drive in urban area. For this calculation, a running test was conducted in which exhaust gas volume data and engine control data were recorded. The evaluated exhaust gas components are nitrogen oxide, hydrocarbon, carbon monoxide, carbon dioxide. The engine speed, intake air quantity, vehicle speed and intake air temperature were recorded from the engine control unit. The exhaust components are calculated in gram per kilometre of vehicle drive.
Movement analysis of the semitrailer with the tank-container at hard braking -the case study
Authors: Vrabel J , Skrucany T , Bartuska L , Koprna J 
Published: December 2019

AbstractTransport of liquid, gaseous, powdered or granulated substances is an integral part of the industry in each country. This type of cargo is most often transported by companies that are a part of petrochemical, food or also other types of industry. Increased attention should be paid to transport of tank-vehicles and tank-containers from the point of view of road safety and environmental protection. The volume of such types of transport is growing every year. The extensive trend relates mainly to the developed world economies, which are experiencing economic growth, which includes also Slovakia according to the Statistical Office of the Slovak Republic. This article deals with evaluating the movement of semi-trailer trucks with a tank container during and immediately after hard braking. The movement of the semi-trailer truck with a tank container will be analysed and evaluated immediately after the vehicle is stopped. The movement of the vehicle will be analysed by video analysis. The focus is on analysing behaviour of the semi-trailer truck with a tank container during and immediately after braking. The article compares semi-trailer trucks with tank container with breakwater plates and tank containers without breakwater plates. An important feature of this comparison was processing of videos capturing these vehicles during hard braking in video analysis program.
Modeling sequencing batch reactor operational conditions depending on oxygen concentration
Authors: Łagód G , Piotrowicz A , Cel W , Zaburko J , Drewnowski J 
Published: December 2019

Abstract
Sequencing batch reactors (SBR) can be used as a fill-and draw activated sludge system for wastewater treatment with considerable operating flexibility and the possibility to conduct experiments under standard conditions and extreme case scenarios. Mathematical modeling and computer simulations provide an opportunity to implement existing wastewater processes in modeling software and evaluate different modifications at low costs and no disturbances for on-going processes of full scale WWTP. Additionally, the used model can be calibrated and validated against experimental data from laboratory scale devices. The aim of this study was to simulate the processes occurring in laboratory scale SBR under different aeration strategies. The results include the analysis of the adaptation period of the activated sludge biomass in the SBR, as well as the case of breakdown of treatment process due to stoppage of raw wastewater inflow and the interruption of the aeration and/or mixing. As a result, it can be stated that the oxygen transfer rate should be incorporated in the calibration of biological nutrient removal model in order to effectively visualize the individual contributions of each process.
Reduction of excessive heavy metals accumulation in drinking water with natural zeolites
Authors: Kujawska J , Wasag H 
Published: December 2019

Abstract
This paper reports on the study of heavy metal removal from groundwater intended for human consumption using natural aluminosilicates of the zeolite group. The natural zeolite material has been extracted from the Sokirnica deposit located in the Zakarpattia Region in Ukraine. The central focus of this study was the course of the heavy metal adsorption process itself, in which natural zeolites were applied for the removal of Cr, Cd, Ni and Pb ions from aqueous solutions in the presence of large amounts of Ca and Mg ions, competing for ion exchange sites. The capacity of zeolite as an adsorbent was assessed with the use of adsorption isotherms prepared for the heavy metals under tests, whereas the mathematical description of the process was provided by Freundlich and Langmuir isotherm equations. The results from the analysis confirm the high efficiency, and thus the applicability, of zeolite deposits in water filtration. The effective Cr, Cd, Ni and Pb removal rate from groundwater intended for human consumption was confirmed even when the content of these metals in water was exceeded by a factor of 10, compared to the permissible limits provided in legal regulations.
Static response of FGM porous rhombic conoidal shell
Authors: Ansari M I , Kumar A , Barnat-Hunek D , Łagód G 
Published: December 2019

Abstract
The porosity effect on static analysis of functionally graded porous doubly curved rhombic conoids was investigated. Porosities inside functionally graded materials can occur due to a technical issue during the fabrication process and lead to the occurrence of micro-voids in the materials. The porosity effect was accounted for using a modified power law. The presented mathematical formulation includes normal curvatures in displacement field, as well as cross curvature in strain-displacement field. The improvement in the 2D mathematical model enables to solve problems of moderately thick FGM porous conoids. The feature that distinguishes the presented shell from other is that the maximum transverse deflexion does not occur at its centre. The improved mathematical model was executed in finite element code. The obtained numerical results were compared with the results available in the literature. Once validated, the current model was employed to study the effect of porosity, skew angle, boundary condition, volume fraction index, loading pattern and other geometric parameters.
The comparison of automatic traffic counting and manual traffic counting
Authors: Paľo J , Caban J , Kiktová M , Černický Ľ 
Published: December 2019

Abstract
The main purpose of traffic surveys is to know current state of transport and for design and solution of transport in the future. For collecting traffic data, traffic surveys are carried out which consist in counting the number of vehicles of different categories. There are many ways of collecting traffic data. This paper deals with manual counting and with automatic vehicle counter. Two traffic surveys were made and results from manual counting and automatic counting were compared. The aim is to find and describe advantages and disadvantages of selected types of traffic counting.
Two-dimensional metal-organic frameworks for energy-related electrocatalytic applications
Authors: Chen Sheng , Wu Deeson , Zhao Chuan 
Published: December 2019

Abstract
In this short perspective we examine recent developments in the design, synthesis and use of metal-organic frameworks (MOFs) for electrocatalytic applications. We discuss the inherent challenges and limitations that continue to plague conventional MOFs and novel strategies for overcoming them. In particular we focus on the growing interest in two-dimensional MOFs as a practical HER/OER/NRR/CO2RR catalyst. We also consider its exciting value as a tool for probing the underlying reaction mechanism and catalytic function of various metals.
End-Stage Kidney Disease Is Overlooked as a Proximate Cause of Death at Autopsy
Authors: Reynolds Meredith A , Henriksen Kammi J , Chang Anthony 
Published: December 2019

Abstract

Objectives
To determine how often end-stage kidney disease (ESKD) is implicated as a cause of death (COD) at autopsy.

Methods
We searched our autopsy database (2007-2017) using queries “end-stage renal disease,” “end-stage kidney disease,” “ESRD,” “chronic renal disease,” and “chronic kidney disease.” Final diagnosis and summaries were reviewed to determine if ESKD was appropriately correlated with the COD. Cases in which the COD was unrelated to kidney function were excluded.

Results
Eighty-five patients with a history of ESKD and histologic confirmation thereof were identified. Their CODs were cardiovascular (36%), infection/sepsis (41%), pulmonary (6%), gastrointestinal/hepatic (2%), central nervous system (3%), other systemic disease (7%), and unspecified (5%). ESKD was implicated as a contributing COD in 24 (28%) cases.

Conclusions
ESKD is often overlooked at autopsy, particularly in patients with cardiovascular or infectious disease. Accurate documentation of ESKD contributing to mortality is important for education, counseling, record maintenance, and directing research efforts.
Hospital Records of Pain, Fatigue, or Circulatory Symptoms in Girls Exposed to Human Papillomavirus Vaccination: Cohort, Self-Controlled Case Series, and Population Time Trend Studies
Authors: Thomsen Reimar Wernich , Öztürk Buket , Pedersen Lars , Nicolaisen Sia Kromann , Petersen Irene , Olsen Jørn , Sørensen Henrik Toft 
Published: December 2019

Abstract
Human papillomavirus (HPV) vaccination has been associated with subsequent diffuse symptoms in girls, reducing public confidence in the vaccine. We examined whether girls have nonspecific outcomes of HPV vaccination, using triangulation from cohort, self-controlled case series (SCCS), and population time trend analyses carried out in Denmark between 2000 and 2014. The study population consisted of 314,017 HPV-vaccinated girls and 314,017 age-matched HPV-unvaccinated girls (cohort analyses); 11,817 girls with hospital records (SCCS analyses); and 1,465,049 girls and boys (population time trend analyses). The main outcome measures were hospital records of pain, fatigue, or circulatory symptoms. The cohort study revealed no increased risk among HPV vaccine-exposed girls, with incidence rate ratios close to 1.0 for abdominal pain, nonspecific pain, headache, hypotension/syncope, tachycardia (including postural orthostatic tachycardia syndrome), and malaise/fatigue (including chronic fatigue syndrome). In the SCCS analyses, we observed no association between HPV vaccination and subsequent symptoms. In time trend analyses, we observed a steady increase in these hospital records in both girls and (HPV-unvaccinated) boys, with no relationship to the 2009 introduction of HPV vaccine to Denmark’s vaccination program. This study, which had nationwide coverage, showed no evidence of a causal link between HPV vaccination and diffuse autonomic symptoms leading to hospital contact.
LiPLike: towards gene regulatory network predictions of high certainty
Authors: Magnusson Rasmus , Gustafsson Mika 
Published: December 2019

AbstractMotivationHigh correlation in expression between regulatory elements is a persistent obstacle for the reverse-engineering of gene regulatory networks. If two potential regulators have matching expression patterns, it becomes challenging to differentiate between them, thus increasing the risk of false positive identifications.ResultsTo allow for gene regulation predictions of high confidence, we propose a novel method, the Linear Profile Likelihood (LiPLike), that assumes a regression model and iteratively searches for interactions that cannot be replaced by a linear combination of other predictors. To compare the performance of LiPLike with other available inference methods, we benchmarked LiPLike using three independent datasets from the Dialogue on Reverse Engineering Assessment and Methods 5 (DREAM5) network inference challenge. We found that LiPLike could be used to stratify predictions of other inference tools, and when applied to the predictions of DREAM5 participants, we observed an average improvement in accuracy of &gt;140% compared to individual methods. Furthermore, LiPLike was able to independently predict networks better than all DREAM5 participants when applied to biological data. When predicting the Escherichia coli network, LiPLike had an accuracy of 0.38 for the top-ranked 100 interactions, whereas the corresponding DREAM5 consensus model yielded an accuracy of 0.11.Availability and implementationWe made LiPLike available to the community as a Python toolbox, available at https://gitlab.com/Gustafsson-lab/liplike. We believe that LiPLike will be used for high confidence predictions in studies where individual model interactions are of high importance, and to remove false positive predictions made by other state-of-the-art gene–gene regulation prediction tools.Supplementary informationSupplementary data are available at Bioinformatics online.
Niche partitioning within a population of sea snakes is constrained by ambient thermal homogeneity and small prey size
Authors: Goiran Claire , Brown Gregory P , Shine Richard 
Published: December 2019

AbstractIn many populations of terrestrial snakes, the phenotype of an individual (e.g. body size, sex, colour) affects its habitat use. One cause for that link is gape limitation, which can result in larger snakes eating prey that are found in different habitats. A second factor involves thermoregulatory opportunities, whereby individuals select habitats based upon thermal conditions. These ideas predict minimal intraspecific variation in habitat use in a species that eats small prey and lives in a thermally uniform habitat, such as the sea snake Emydocephalus annulatus, which feeds on tiny fish eggs and lives in inshore coral reefs. To test that prediction, we gathered data on water depths and substrate attributes for 1475 sightings of 128 free-ranging E. annulatus in a bay near Noumea, New Caledonia. Habitat selection varied among individuals, but with a preference for coral-dominated substrates. The body size and reproductive state of a snake affected its detectability in deep water, but overall habitat use was not linked to snake body size, colour morph, sex or pregnancy. A lack of ontogenetic shifts in habitat use allows extreme philopatry in E. annulatus, thereby reducing gene flow among populations and, potentially, delaying recolonization after local extirpation events.
Mapping queer ‘celebratory moment’ in India: necropolitics or substantive democracy?
Authors: Kumar Pushpesh 
Published: December 2019

AbstractUsing the theoretical framework of queer necropolitics indicating the negation of subjecthood to trans-queer of colour while assimilating white privileged gays through homonormative gestures like marriage and domesticity in the USA, the paper compares the diverse reactions of the Indian ‘urban corporate gay’ constituency and the marginalized transgender communities following the legalization of ‘homosexuality’ in India recently. Through an analysis of social media texts from the former and reflections of the latter, I propose a ‘critical intersectionality’ to politicize the idea of queer community mobilizations in India. While critically reflecting on the limits of ‘consumer citizenship’ of the privileged gay, the paper attempts to foreground the voices of transgender ‘counterpublics’ to draw attention to and problematize the idea of ‘community’ (re)iterated through popular and legal discourses.
Radial Glial Cell-Derived VCAM1 Regulates Cortical Angiogenesis Through Distinct Enrichments in the Proximal and Distal Radial Processes
Authors: Zhang Sanguo , Wang Huanhuan Joyce , Li Jia , Hu Xiao-Ling , Shen Qin 
Published: December 2019

AbstractAngiogenesis in the developing cerebral cortex accompanies cortical neurogenesis. However, the precise mechanisms underlying cortical angiogenesis at the embryonic stage remain largely unknown. Here, we show that radial glia-derived vascular cell adhesion molecule 1 (VCAM1) coordinates cortical vascularization through different enrichments in the proximal and distal radial glial processes. We found that VCAM1 was highly enriched around the blood vessels in the inner ventricular zone (VZ), preventing the ingrowth of blood vessels into the mitotic cell layer along the ventricular surface. Disrupting the enrichment of VCAM1 surrounding the blood vessels by a tetraspanin-blocking peptide or conditional deletion of Vcam1 gene in neural progenitor cells increased angiogenesis in the inner VZ. Conversely, VCAM1 expressed in the basal endfeet of radial glial processes promoted angiogenic sprouting from the perineural vascular plexus (PNVP). In utero, overexpression of VCAM1 increased the vessel density in the cortical plate, while knockdown of Vcam1 accomplished the opposite. In vitro, we observed that VCAM1 bidirectionally affected endothelial cell proliferation in a concentration-dependent manner. Taken together, our findings identify that distinct concentrations of VCAM1 around VZ blood vessels and the PNVP differently organize cortical angiogenesis during late embryogenesis.