bluuebunny/crossref_metadata_2025_split huggingface dataset:
Innovative building materials in creation an architectural environment
Authors: Abyzov V A , Pushkarova K K , Kochevykh M O , Honchar O A , Bazeliuk N L 
Published: August 2020

Abstract
Progressive building materials and technologies can ensure not only the durability of buildings and structures that are operated in difficult conditions and the consumption of a minimum amount of energy with little impact on the environment, but also will contribute to the creation of an effective and harmonious architectural environment in accordance with the requirements of sustainable development. An important role in solving these problems is assigned to recycled (reusable materials); traditional natural and local building materials that due to technical progress have gained new prospects for use in modern environmental and energy-efficient structures and buildings (“old-new” natural materials); nanomaterials and nanotechnologies, the use of which will not only improve the quality and properties of materials, and, accordingly, the environment, but also create completely new materials and architectural solutions with a set of properties. The purpose of this study is generalization, systematization and examination of these innovative materials and products.
Optimization of the composition of hydrophobized cellular concrete according to its moisture-transporting and water-holding characteristics
Authors: Lapovska S D , Klapchenko V I , Krasnianskyi G Iu , Gasan Yu G , Kuznetsova I O 
Published: August 2020

Abstract
The article is devoted to the study of the possibility of obtaining information about frost resistance and strength of concrete based on the analysis of its moisture-transporting and equilibrium water-holding properties. The dependences of the moisture diffusion coefficient, equilibrium moisture content at various values of relative humidity and porosity of autoclaved cellular concrete specimens on the concentration of water-repellent additive were studied. A comparison of the results of these measurements with the data on frost resistance, got by the direct method according to the current standards, have been made. It is shown, that moisture-transporting and water-holding characteristics can be used to assign concrete compositions optimal in frost resistance and strength. The mechanisms of the influence of water repellent on the frost resistance at its various concentrations are considered. It has been established that the composition of cellular concrete containing 2% water-repellent additive is optimal.
Utilization of chemical waste and by-products as one of technological progress directions
Authors: Gabitov A I , Ryazanova V A , Rolnik L Z , Salov A S , Timofeev V A 
Published: August 2020

Abstract
Getting cement-free lime-containing binder by firing thereof and mixed grinding of sand together with solid sludge of still waste liquid being bulk waste of soda ash production is analyzed herein. The experience of making masonry autoclaved concrete blocks and construction of low-rise residential houses therefrom is presented. Lime-containing sludge of still waste liquid, i.e. waste of soda ash production, is shown to be prospective raw material in making construction materials as a substitute for lime.
Innovative Thermal Insulation Materials with Dual Properties
Authors: Plakhotnikov K , Starkova O , Dedenova O , Bondarenko D , Demina O 
Published: August 2020

Abstract
The paper presents the results of development and research of an innovative thin-layer thermal insulation material that protects the building from heat loss due to thermal radiation. The material is a dry mortar of cement binder and filler of hollow aluminosilicate microspheres. A thin-layer coating made from this optimally combines the functions of effective heat protection and external finishing warm plastering that is advantageous when reconstructing and restoring historical objects with a lavish decoration. The conducted studies have shown that aluminosilicate microspheres in the composite thermal insulation coating are also involved in the reflection of infrared radiation. The use of Class 2 admixtures made it possible to synthesize additional crystalline hydrates with the aluminate phase of clinker brick, which contributed to the strengthening of the cement composite at the micro- and submicrolevels. This was confirmed by electron microscopy. For the developed composition of the mineral thin-layer thermal insulation coating, the cost of the mixture is almost 3 times lower than for the known composition of the thermal insulation coating on the polymer binder. In addition, unlike polymer analogs, there are no restrictions in terms of temperature and service life. The thermal insulation coating may be applied both exteriorly and interiorly with no condensation being formed between the wall and the coating. Applying the developed thin-layer thermal insulation coating on a brick wall measuring 10 m by 10 m in the climatic conditions of Kharkiv allows reducing heat consumption by 0.188% per 1 m2 per year.
Comparative evaluation of quality of hard and special paving grade bitumen’s
Authors: Pyrig Y , Galkin A , Oksak S 
Published: August 2020

Abstract
The application of hard paving grade bitumen or polymer modified bitumen is one of the solutions to prevent a creep of road pavement. The implementation of special hard bitumen and multigrade bitumen starts at 80-th of the last century in a purpose to construct high module asphalt pavement. The results of comparative evaluation of conventional and fundamental (cohesion, adhesion, viscosity) quality indicators for hard paving grade bitumen and multigrade bitumen are given in the article. Low value of temperature susceptibility and a wide plasticity interval are obtained as characteristics of multigrade bitumen. The same is inherent to the air-blown bitumen, with a “gel” type structure. Low ductility and a significant change in softening point temperature after hardening can be considered as disadvantages of multigrade bitumen.
Compatibility analysis of superplastisizers with different types of cements
Authors: Tolmachov S M , Belichenko O A , Tolmachov D S 
Published: August 2020

Abstract
The article considers the urgent issue of improving the quality and durability of road cement concrete. It is shown that the decrease of the quality of concrete mixtures and concrete is often due to incompatibility between cement and superplasticizer. This can happen if the same superplasticizer is used, but different cements of the same plant. This also happens if superplasticizers of the same type, but of different manufacturers, with the same cement are used. Therefore, it is important to quickly assess the compatibility of cement and superplasticizer at the stage of concrete mix design. The article proposes to evaluate the compatibility by changing the properties of cement paste without superplasticizer and with it. It is shown that compatibility can be established within a few hours. Based on the experiments, it was established which superplasticizers should be used for cements of a certain mineral composition.
Research of technologies for restoration of the concrete protective layer of reinforced concrete constructions during the reconstruction of the buildings and structures
Authors: Galinsky O M , Molodid O S , Sharikina N V , Plokhuta R O 
Published: August 2020

Abstract
The use of reinforced concrete in modern construction is conditioned by its mechanical and physical properties. However, over time, under the influence of all sorts of factors, structures collapse and require repair work to restore quality indicators and geometric configuration. Typically, the destruction of the structure begins with the upper layers of concrete and extends in deep. Therefore, this article presents the results of experimental studies on the restoration of the surface of concrete specimens and determines the dependence of the adhesive strength of recovered concrete with the repair mix depending of the method of preparation of the surface of the base structure. Experimental studies were planned and carried out in five series, in which was changed the way the base was prepared: applying two-component glue “Erorip” (TM “MAPEI”) to the base; application of two-component “Edmock” glue (Composite LLC); with wetting the concrete surface and restoring it with a modified concrete mixture; application of “Consolid 1” and “Consolid 2” compositions (“Composite” LLC) with an interval of 24 hours; moistening the surface of the samples with water (control samples). In addition, the strength of adhesion of recovered concrete with the repair mix depending of the spatial position of the repair site was determined. For this purpose, the repair mixture was put into the formwork on the upper, lateral or lower surface of the samples. After 28 days after laying the repair mixture, the average values of adhesion strength of the recovered layers with the base were determined. It was found that in the process of restoration of the upper surface of the samples all the methods of preparation of the base gave a good adhesion of layers of concrete, during the restoration of the lateral surface the best results were obtained in series No. 1 and No. 3, while the restoration of the lower surface is effective in case preparation of the basis as for the series No 3. The results of the obtained experimental research indicates a further need to investigate the method of restoring the lateral and lower surfaces of concrete and reinforced concrete structures.
Investigation of adhesive-strength characteristics of fire-retardant epoxy polymers modified with metal-containing additives
Authors: Hryhorenko O , Zolkina Ye , Saienko N , Popov Y , Bikov R 
Published: August 2020

Abstract
Composite materials based on epoxy oligomers due to their unique properties are widely used in various fields of construction and mechanical engineering, including fire retardant coatings. The introduction of flame retardants and dispersed inert fillers as a rule, affects the structure of epoxy polymers. When addressing issues related to the creation of flame-retardant, composite materials, there is insufficient data on the impact of dispersed mineral fillers on their performance properties. Attention is mainly paid to the indicators of flammability, toxicity of combustion products and thermophysical properties of the coating. Therefore, the aim of this work is to conduct experimental studies of changes in the adhesive and strength characteristics of fire-retardant epoxy polymer from the content of metal-containing additives. As a result of experimental studies, it was found of that changing the component composition of the composition can vary widely the adhesive strength characteristics of fire-retardant epoxy polymers. The obtained data must be taken into account when developing epoxyamine coatings for fire protection of building structures and technological communications.
Utilization of sorted secondary PET waste - raw materials in the context of sustainable development of the modern city
Authors: Malovanyy M S , Synelnikov S D , Nagurskiy O A , Soloviy K M , Tymchuk I S 
Published: August 2020

Abstract
It is established that the lack of technologies for the complete utilization of secondary PET – raw material sorted from municipal solid waste - raw materials is a threat to the sustainable development of the modern city. One of the promising ways of PET disposal is to use it to encapsulate mineral fertilizers. Under the laboratory conditions, the technology of PET modification and capsule application to mineral fertilizer particles under fluidized bed conditions has been successfully tested. Conducted pilot tests of the release of nutrition elements from mineral fertilizers encapsulated with modified PET, confirmed the uniformity and quality of the coating. Pilot studies have confirmed the effectiveness of the new form of obtained fertilizers.
The Modern Shopping Centers of Kharkiv in Visitors’ Perception
Authors: Smolenska S A , Borysenko A S 
Published: August 2020

Abstract
Article is dedicated to revealing the qualitative characteristics of environment of five modern shopping centers of Kharkiv. Analysis is based on user reviews published on Google Maps. Review texts underwent semantic analysis with division of results under 4 qualitative categories, namely “commercial attractiveness”, “comfortability”, “energization of activity”, “aesthetic articulation of the place”. Results confirm the existence of three patterns of preferences’ distribution that correspond to three types of shopping mall by structure (by B. Maitland), these being introverted, integrated and specialized or thematic type. The figures were then compared with results from similar analysis of foreign centers. Three shopping centers of Kharkiv received positive reviews in numbers comparable with foreign ones, all of the prevalent introverted type, signalling that competition between shopping complexes in Kharkiv is not high enough for their owners to seek new spatial concepts for retail objects. Meanwhile, developed retail markets of USA and Western Europe indicate the diversification of type and spatial characteristics of shopping centers. An adoption of shopping center organization methods from western practice and its belated spread in Ukraine lead to lag in new types’ introduction. Particularly an idea of thematic narrative concept is a promising but underused resource in Kharkiv’s situation.
Creation of modern Orthodox churches in Ukraine - “as languages of Ukrainian autochthony” in the context of urban development”
Authors: Sleptsov O S , Dunaevskiy Y U 
Published: August 2020

Abstract
The article “Creation of modern Orthodox churches in Ukraine - “as languages of Ukrainian autochthony” in the context of urban development” is devolved to analysis of the process of revival of Ukrainian church building in the early 90s of XX century and today. It is pointed current research problems and issues. Research papers, publications, abstracts, dissertations, books of recent years by various artists, architects, founders of Ukrainian indigenous architecture are studied. Three main periods of the national architecture of the Ukrainian state (the era of Kievan Rus, Ukrainian Baroque, and Ukrainian Art Nouveau) are described. It is noted that concepts, approaches and methods of designing modern architects of Ukraine. The paper presents architectural psychotypes of the customer of the project, the architect and the priest, and also the model of interaction and influence of sociocultural tendencies on architecture of temples. The paper is supplied with figures and tables. The research provides practical and methodological advice and conclusions on the modern design of temples in Ukraine.
Performance of graphene dispersion by using mixed surfactants
Authors: Feng Bei-Bei , Wang Zhao-Hui , Suo Wen-Hua , Wang Yi , Wen Jia-Cheng , Li Yu-Fo , Suo Hong-Li , Liu Min , Ma Lin 
Published: August 2020

Abstract
In this work the ability of pure surfactant Sodium Dodecyl Sulfate (SDS), Cetyltrimethyl Ammonium Bromide (CTAB) and their mixed surfactants for graphene dispersion in aqueous solution was investigated. The uniform and stable dispersion solution was obtained for graphene with the mixtures of SDS and CTAB at lower concentration as compared to the pure one. The SDS-based surfactants exhibited better dispersion as compared to CTAB-based surfactants due to smaller-sized graphene as was investigated via Zeta potential measurements. Zeta potential was utilized to characterize the colloidal stability of surface charges within the mixtures. The mixed surfactants utilized in the present study showed a better ability to disperse graphene and its derivatives and hence are well suited for practical applications.
The difference in effects of electric current pulses on inoculation of austenite and M7C3 carbides
Authors: Geng Baoyu , Zhou Rongfeng , Li Yongkun , Wang Quiping , Jiang Yehua 
Published: August 2020

Abstract
It is a controversial issue whether the electric current pulse (ECP) has an inoculation effect on the solidification process. Two different high chromium cast irons were modified with the ECP above the freezing point temperature to investigate this issue. According to the statistical results of the number and size of primary phase grains, it was found that the ECP did not have an inoculation effect on the hypoeutectic high chromium cast irons (HOHCCI) whose primary phase was austenite. However, it had a significant inoculation effect on the hypereutectic high chromium cast irons (HEHCCI) whose primary phase was M7C3 carbides. The result indicates that the response of different primary phases to the ECP inoculation effect was different. The cause of the phenomenon is further analyzed by simulating the diffusion of atoms in the melt and comparing the binding forces of atomic clusters. The analysis shows that although the ECP can increase the number of atomic clusters (composition close to the primary phase) in the melt, the number of clusters retained to the nucleation temperature after the ECP removal is different because the binding forces of clusters in two melt is different.
Electronic structure and vibrational assignments of 2,5-bis[4-(n-cyclobutyldiaminomethyl)phenyl]furan
Authors: Yadav Sanjai Kumar , Yadav Garima , Yadava Umesh 
Published: August 2020

Abstract
Several DNA minor groove binders exhibit numerous therapeutic applications. The crystal structure demonstrating 2,5-bis[4-(N-cyclobutyldiaminomethyl)phenyl]furan binding within the minor groove of DNA has been reported by Simpson et al (2000 Bioorg. Med. Chem. Lett.
10 2593). In the present study, computational investigations on the title compound have been carried out which comprise geometry optimization, HOMO-LUMO, dipole moment, Molecular electrostatic potential(MEP), thermodynamic parameters, and IR assignments using the B3LYP/6-31G** method. The true minimum was long-established by the nonappearance of negative wavenumbers. A comparison of optimized parameters with crystallographic structure demonstrates slight variations in the conformations of the cyclobutyl groups. A small HOMO-LUMO gap indicates the high chemical reactivity and inter molecule charge transferability. The vibrational spectra of the molecule calculated in 400–3800 cm−1 region, reproduce reliable IR assignments. Bearing in mind the high pharmaceutical significance of minor groove binders and a variety of flexible options accessible for lead optimization will be a bountiful ground for the development of drugs targeting minor grooves.
How Can We Be Ready to Study History in the Age of Abundance? A Response
Authors: Milligan Ian 
Published: August 2020

Abstract
Ian Milligan’s History in the Age of Abundance? How the Web Is Transforming Historical Research (2019) presents and interrogates the challenges and opportunities that born-digital materials have for historians. Milligan argues that historians who wish to grapple with the archived internet need to think much more aggressively about engaging with digital methods and tools that can complement and extend the well-honed practices of close reading with approaches that can help analyze the vast and often unstructured archives of internet data. In this AHR Review Roundtable, three historians—Jo Guldi, Tim Hitchcock, and Michelle Moravec, all of whom incorporate digital approaches and concerns into their work—engage with a set of questions developed by Digital Scholarship Librarian Daniel J. Story, to discuss Milligan’s treatment of the digital archive of the web and its implications for historians’ work. Milligan offers a response to these insights and critiques, emphasizing the need for the historical discipline to change from within and build upon its valuable qualities.
Concerns About the Special Article on Hydroxychloroquine and Azithromycin in High-Risk Outpatients With COVID-19
Authors: Fox Matthew P , D’Agostino McGowan Lucy , James Bryan D , Lessler Justin , Mehta Shruti H , Murray Eleanor J 
Published: August 2020

Abstract
In May 2020, the Journal published an opinion piece by a member of the Editorial Board, in which the author reviewed several papers and argued that using hydroxychloroquine (HCQ) + azithromycin (AZ) early to treat symptomatic coronavirus disease 2019 (COVID-19) cases in high-risk patients should be broadly applied. As members of the Journal’s Editorial Board, we are strongly supportive of open debate in science, which is essential even on highly contentious issues. However, we must also be thorough in our examination of the facts and open to changing our minds when new information arises. In this commentary, we document several important errors in the manuscript, review the literature presented, and demonstrate why it is not of sufficient quality to support scale up of HCQ + AZ, and then discuss the literature that has been generated since the publication, which also does not support use of this therapy. Unfortunately, the current scientific evidence does not support HCQ + AZ as an effective treatment for COVID-19, if it ever did, and even suggests many risks. Continuing to push the view that it is an essential treatment in the face of this evidence is irresponsible and harmful to the many people already suffering from infection.
A survey on deep learning in DNA/RNA motif mining
Authors: He Ying , Shen Zhen , Zhang Qinhu , Wang Siguo , Huang De-Shuang 
Published: August 2020

AbstractDNA/RNA motif mining is the foundation of gene function research. The DNA/RNA motif mining plays an extremely important role in identifying the DNA- or RNA-protein binding site, which helps to understand the mechanism of gene regulation and management. For the past few decades, researchers have been working on designing new efficient and accurate algorithms for mining motif. These algorithms can be roughly divided into two categories: the enumeration approach and the probabilistic method. In recent years, machine learning methods had made great progress, especially the algorithm represented by deep learning had achieved good performance. Existing deep learning methods in motif mining can be roughly divided into three types of models: convolutional neural network (CNN) based models, recurrent neural network (RNN) based models, and hybrid CNN–RNN based models. We introduce the application of deep learning in the field of motif mining in terms of data preprocessing, features of existing deep learning architectures and comparing the differences between the basic deep learning models. Through the analysis and comparison of existing deep learning methods, we found that the more complex models tend to perform better than simple ones when data are sufficient, and the current methods are relatively simple compared with other fields such as computer vision, language processing (NLP), computer games, etc. Therefore, it is necessary to conduct a summary in motif mining by deep learning, which can help researchers understand this field.