bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mixed Symmetry States for even-even 218-224 Ra Isotopes by using (IBM-2)
Authors: Kadhim Hadi Al-Sadi Mohammed Abdul , Alnasraui Ali Hussein F. , Altbtbiey Dhay Alaa 
Published: November 2020

Abstract
In present investigation we employ IBM-2 parameters in Hamiltonian operator and applying the NPBOS bundle to determine mixed symmetry states for even-even 218-224 Ra isotopes, in addition to extract some theoretical nuclear properties, one of which the excited energy levels, which gave best match between practical data and theoretical results specially for the ground state bands, and acceptable agreement for semi β bands and semi γ bands. The (MSS) property which gets a speedy reaction while changing majorana term δ2 due to mixture between wave function for protons and neutrons was diagnosed for levels Energy ratios were calculated between and which shows these isotopes have a varied dynamic stretch starting from their pure vibrational state at A = 218 transition state U (5) - O (6) at A = 220 and finally transition state O (6)-SU (3), when A = 222 And 224, respectively. Finally, determined the likelihood for electric quadruple transition B(E2), magnetic dipole B(M1), which All express a decent agreement with the practical data.
DESCRIPTION OF SUNN PEST(HEMIPTERA: SCUTELLERIDAE) AND CAMPONOTUS SPP. (HYMENOPTERA: FORMICIDAE), AS THEIR PREDATOR, FROM THE WHEAT FIELDS OF THI-QAR PROVINCE SOUTHERN IRAQ
Authors: Al-Fayyadh Mustafa Jawad , Najim Shurooq Abdullah , Al-Husainawi Khalid Jabir 
Published: November 2020

Abstract
The sunn pest of Eurygaster spp. (Hemiptera: Scutelleridae) also known as sting or cereal bug, is one of the most economically important pest in the world. The study include conducting a field survey of wheat fields in Thi – Qar province to investigate the presence of the sunn pest, as the insect was observed for the first time in wheat fields of AL-Rifai district north of province, at the end of March, the survey was expanded to include other localities in province, AL-Dawaya, AL-Nasir, AL-Gharraf, AL-Shatra districs. A description of adult females belong to two species of sunn pest were identified as Eurygaster integriceps (Poton, 1898), and Eurygaster testudinaria (Goffary, 1758), from two loclaities of study region (AL-Rifai and AL-Dawaya), from the period during 23/March to 14/5/2020. One of the important opservation is the presence of efficient natural enemy of this pestrepresents by ants, the predator was identify as Camponotus spp.(Hymenoptera: Formicidae: Formicinae), as was noted killing the living insects and hiding them in their holes.
A new class of three-term double projection approach for solving nonlinear monotone equations
Authors: Mahdi M M , Shiker Mushtak A.K. 
Published: November 2020

Abstract
The derivative-free projection methodology is important and highly efficient method to solve large scale monotone equations of nonlinear systems. In this work, we suggested a new class of extensions projection approach employs along with a new line search to show a class of new double projection technique for solving monotone systems of nonlinear equations. Our algorithm can be applied to solve nonsmooth equations, furthermore it’s suitable for large scale equations due to simplicity and limited memory. This method constricts new two appropriate hyperplanes in each point strictly separates xk
from the solution set, it can obtain the next iteration x

k+1 by projecting xk
onto the intersection of two halfspaces and include the solution set of the problem. The global convergence of the given method is investigated with mild assumptions. The numerical experiments prove that the new approach is working well and so promising.
Diverse paradigms of residential development inform water use and drought-related conservation behavior
Authors: Quesnel Kimberly J , Agrawal Saahil , Ajami Newsha K 
Published: November 2020

Abstract
Widespread urbanization has led to diverse patterns of residential development, which are linked to different resource consumption patterns, including water demand. Classifying neighborhoods based on urban form and sociodemographic features can provide an avenue for understanding community water use behaviors associated with housing alternatives and different residential populations. In this study, we leveraged built environment data from the online real estate aggregator Zillow to develop neighborhood typologies and community clusters via a sequence of unsupervised learning methods. Five distinct clusters, spatially segregated despite no geospatial inputs, were associated with unique single-family residential water use and conservation patterns and trends. The two highest-income clusters had divergent behavior, especially during and after a historic drought, thus unraveling conventional income–water use and income–water conservation relationships. These clustering results highlight evolving water use regimes as traditional patterns of development are replaced with compact, water-efficient urban form. Defining communities based on built environment and sociodemographic characteristics, instead of sociodemographic features alone, led to 3% to 30% improvements in cluster water use and conservation cohesion. These analyses demonstrate the importance of smart development across rapidly urbanizing areas in water-scarce regions across the globe.
Mechanisms of the decadal variability of monsoon rainfall in the southern Tibetan Plateau
Authors: Yue Siyu , Wang Bin , Yang Kun , Xie Zhiling , Lu Hui , He Jie 
Published: November 2020

Abstract
The Tibetan Plateau (TP), as a whole, has undergone a moistening process since the late 1990s. However, the southern Tibetan Plateau (STP) is an exception, where summer monsoon precipitation amount has decreased, and lakes have shrunk. The cause for the precipitation decrease is not clear yet. Here we show that the monsoon (June to September) mean precipitation changes in the STP from 1979 to 2018 features a decadal variation component with a peak of around 10 years that is superposed on an upward ‘trend’ from 1979 to 1998 and a downward ‘trend’ afterward. We find that the decadal variation of the STP precipitation is associated with a large-scale dipolar sea surface temperature (SST) pattern between the equatorial central Pacific and the Indo-Pacific warm pool. A wet STP corresponds to negative SST anomaly in the equatorial central Pacific and positive SST anomaly in the Indo-Pacific warm pool. This equatorial SST gradient in the western Pacific generates pronounced easterly anomalies and a dipolar rainfall anomaly (i.e. a positive rainfall anomaly over the Maritime Continent and a negative anomaly in the equatorial western and central Pacific). Due to less precipitation over the equatorial western Pacific, the suppressed heat source appears to excite an anomalous anticyclonic band along 15–20° N extending from the Philippine Sea to the Bay of Bengal by emanating westward propagating descending transient Rossby waves. The low-level anticyclonic circulation over the Bay of Bengal further enhances northward moisture transport toward the STP and promote upward motion in the STP through changing local meridional circulation. Besides, the linearized atmospheric general circulation model experiments demonstrate that the dipole heating source can generate a high-pressure zone under the control of anticyclone over the western Pacific, which can extend westward to the Indian monsoon region.
River fragmentation and flow alteration metrics: a review of methods and directions for future research
Authors: Jumani Suman , Deitch Matthew J , Kaplan David , Anderson Elizabeth P , Krishnaswamy Jagdish , Lecours Vincent , Whiles Matt R 
Published: November 2020

Abstract
Rivers continue to be harnessed to meet humanity’s growing demands for electricity, water, and flood control. While the socioecological impacts of river infrastructure projects (RIPs) have been well-documented, methodological approaches to quantify river fragmentation and flow alteration vary widely in spatiotemporal scope, required data, and interpretation. In this review, we first present a framework to visualise the effects of different kinds of RIPs on river fragmentation and flow alteration. We then review available methods to quantify connectivity and flow alteration, along with their data requirements, scale of application, advantages, and disadvantages. Finally, we present decision-making trees to help stakeholders select among these methods based on their objectives, resource availability, and the characteristics of the project(s) being evaluated. Thematic searches of peer-reviewed literature using topic-relevant keywords were conducted on Google Scholar. The bibliography of selected papers was also reviewed, resulting in the selection of 79 publications. Papers that did not define or apply a specific metric were excluded. With respect to fragmentation, we selected papers focused on instream connectivity and excluded those dealing with overland hydrologic connections. For flow alteration, we selected papers that quantified the extent of alteration and excluded those aimed at prescribing environmental flows. The expected hydrological consequences of various RIP types were ‘mapped’ on a conceptual fragmentation-flow alteration plot. We compiled 29 metrics of river fragmentation and 13 metrics to flow alteration, and used these to develop decision-making trees to facilitate method selection. Despite recent advances in metric development, further work is needed to better understand the relationships between and among metrics, assess their ecological significance and spatiotemporal scale of application, and develop more informative methods that can be effectively applied in data-scarce regions. These objectives are especially critical given the growing use of such metrics in basin-wide conservation and development planning.
Weather regimes and patterns associated with temperature-related excess mortality in the UK: a pathway to sub-seasonal risk forecasting
Authors: Huang Wan Ting Katty , Charlton-Perez Andrew , Lee Robert William , Neal Robert , Sarran Christophe , Sun Ting 
Published: November 2020

Abstract
Non-optimal temperatures, both warm and cold, are associated with enhanced mortality in the United Kingdom (UK). In this study we demonstrate a pathway to sub-seasonal and medium range forecasting of temperature-related mortality risk by quantifying the impact of large-scale weather regimes and synoptic scale weather patterns on temperature-associated excess deaths in 12 regions across the UK. We find a clear dominance of the NAO− regime in leading to high wintertime excess mortality across all regions. In summer, we note that cold spells lead to comparable cumulative excess mortality as moderate hot days, with cold days accounting for 11 (London) to 100% (Northern Ireland) of the summer days with the highest 5% cumulative excess mortality. However, exposure to high temperatures is typically associated with an immediate but short lived spike in mortality, while the impact of cold weather tends to be more delayed and spread out over a longer period. Weather patterns with a Scandinavian high component are most likely to be associated with summer hot extremes, while a strong zonal jet stream weather pattern which rarely occurs in summer is most likely to be associated with summer cold spells.
An exact power series representation of the Baker–Campbell–Hausdorff formula
Authors: Moodie Jordan C , Long M W 
Published: November 2020

Abstract
An exact representation of the Baker–Campbell–Hausdorff formula as a power series in just one of the two variables is constructed. Closed form coefficients of this series are found in terms of hyperbolic functions, which contain all of the dependence on the second variable. It is argued that this exact series may then be truncated and be expected to give a good approximation to the full expansion if only the perturbative variable is small. This improves upon existing formulae, which require both to be small. Several different representations are provided and emphasis is given to the situation where one of the matrices is diagonal, where a particularly easy to use formula is obtained.
Estimation of porosity of coatings based on sol of silicate paint
Authors: Loganina V I , Mazhitov Y B 
Published: November 2020

Abstract
Information on the properties of the sol of silicate paint is given. The porosity of coatings was studied. The fractal pore size of the coating was indentified. It was found that sol-silicate coatings are characterized by a high fractal pore dimension. The protective properties of the coatings evaluated. A decrease in water absorption values was observed during capillary suction of mortar samples stained with sol by silicate paint in comparison with samples stained with silicate paint. Information on the properties of the sol of silicate paint and coatings based on it is provided.
Organic composite binder improving the physical and mechanical properties of low-strength stone materials
Authors: Leskin A I , Aleksikov S V , Gofman D I 
Published: November 2020

Abstract
Based on the results of research and practical tests, the authors have developed a composition and proposed a technology for preparing an organic composite binder capable of deep penetration into pores of low-strength stone material with formation of a hydrophobic well-retained layer on its surface, which provides improvement of the main strength characteristics of the stone. Results of experimental studies are presented, optimal concentration of OCB and minimum processing time are determined. Practical recommendations are given for using the obtained strengthened material, which can act as a full-fledged independent working layer of road structure, as well as a component of asphalt concrete and cement concrete mixtures.
Quality Improvement of semi-dry pressing ceramic bricks from low-quality raw materials by the directional additives
Authors: Ilina L , Tatski L , Baryshok L 
Published: November 2020

Abstract
The advantages and disadvantages of ceramic bricks production by the method of semi-dry pressing, using traditional technology, are considered. Urgent problem of improving the available clay rocks’ properties, depleted in clay fractions and containing large amounts of dust particles is appeared in many regions due to the shortage of high-quality clay raw materials. The used materials were clay rocks of the Novosibirsk region. Research methods were introduction of directional additives to the composition of raw mixes that affected the compressive strength, water absorption, brightness and color of the burnt shard. The research results showed the need for an individual approach to the raw materials of each field. Types of additives, contributed to reducing water absorption, eliminating crack formation, increasing strength, expanding the color range of products, were identified.
Investigation of the effects of fuel slag on the properties of gypsum mixtures
Authors: Butakova M D 
Published: November 2020

Abstract
The article analyzes the effect of fuel slag on the properties of a gypsum binder. An optimal composition of a gypsum binder based on an ash and slag mixture has been developed in order to minimize costs, several compositions of plaster with different aggregates have been developed, an optimal composition has been identified based on the properties obtained. Gypsum binders and materials based on them are progressive building materials due to the simplicity, efficiency and low energy intensity of production. However, gypsum binders have high water demand, and products are characterized by low water resistance, limited strength, and low frost resistance.
Methods of assessing the durability of high performance concrete
Authors: Trofimov B Ya , Kramar L Ya , Shuldyakov K V 
Published: November 2020

Abstract
To ensure concrete durability in reinforced concrete structures is one of the main problems of modern concrete technology. In the State Standard (GOST 31384-2017) we can find the restrictions to concrete composition depending on the class and index of operating media, but there is no information on how they affect the durability, what kind of service life of concrete and reinforced concrete structures they guarantee. This articles shows that the restrictions to concrete composition are necessary but not sufficient to ensure concrete durability especially under harsh conditions of its operation. This is due to the fact that in the national standards the role of the basic concrete strength index, which is the microstructure of hydrated phases of cement stone, is not taken into consideration. The cement gel formed by calcium hydrocilicates and being the densest and strongest component of the structure, determines the concrete durability provided it is stable in specific environmental operating conditions. The proposed methods of assessing the stability of concrete microstructure make it possible to optimize technological parameters of production of reinforced concrete structures of high performance and durability.
The effect of a plasticizer based on polymethylene naphthalene sulfonic acids on the structure of a magnesian stone
Authors: Averina G F , Koshelev V A , Kramar L Y 
Published: November 2020

Abstract
The article presents the results of a study devoted to identifying the effect of a plasticizer based on polymethylene naphthalene sulfonic acids on the structure of a magnesian stone. It is known that the strength characteristics of magnesian stone samples modified with various amounts of such additive have different strength, provided that the water/cement ratio does not change. This study allows to identify the relationship between strength characteristics and structural features of magnesia stone modified by additive, as well as the effect on the dosage of this additive on the formation of the main structural minerals of magnesia stone. Study of the samples structure, the electron-scanning microscopy method and an X-ray microanalyzer were used. According to the results of the study, it was found that the presence and amount of a plasticizer based on polymethylene naphthalene sulfonic acids promotes the various formation and distribution of the main structural phases of magnesia stone. The optimal amount of additive allows to get the most amorphized structure of magnesium pentaoxyhydrochloride, providing it with the highest strength characteristics.
The use of metallurgy waste in the roads sustainability improving
Authors: Pimenov A , Barakhtenova L , Pribylov V 
Published: November 2020

Abstract
The purpose our scientific work is to develop recycling techniques metallurgical slag (MS) of the Kemerovo regions’ industrial enterprises in the Russian Federation in order to increase the roads sustainability. The research methodology was based on our developed technological schemes of MS recycling, which justified the need for a consistent transformation of their properties through a series of mechanical and physic-chemical effects. Express method of selecting mixtures composition for the bases of pavements from various MS fractions was used for the rapid selection of the densest asphalt mixtures composition. The obtained results indicate that the use of steelmaking slag in the composition of asphalt mixtures determines the possibility of improving their operational properties. This circumstance determines the possibility of using such mixtures for pavements repair, increasing the life of existing roads, as well as the construction of new ones. This means that metallurgical slag can become an important reserve for natural building materials in the process of preparing and laying asphalt mixes on city streets and highways of various classes and categories. Their cost and reserves will make it possible to build pavements resistant to dynamic loads and alternating temperatures with relatively low material costs.
Process control system software (in the context of autoclaved aerated concrete production)
Authors: Leontev S V , Shamanov V A 
Published: November 2020

Abstract
Building industry production shall be considered as a complicated hierarchy system, whose conditions are related to multiple factors. To manage such complicated systems, mathematical modeling methods shall be used to organize awareness of manufacturing parameters, to increase the effectiveness of decisions being made by personnel on different positions and within the process, also to develop construction materials production management systems. In turn, synthesis questions with regard to the management of this process are largely resulted from the deficiency in mathematical model concerned, suitable for practice. Outputs of work on the process control system software for autoclaved concrete production are presents in the article. A justification for the most efficient process control stage is given. A control algorithm is developed for the selected process stage, based on a mathematical model of the end product quality as a function of raw materials demand prepared by authors.
Composite materials in building structures using 3D technology
Authors: Muruzina E V , Zonina S V 
Published: November 2020

Abstract
In recent years, composite materials have occupied a significant place among building materials. Among them can be distinguished glass and carbon fiber, which are largely distributed in construction. They are widely used in the reconstruction of concrete structures, for the production of structural products-as a substitute for some metal and stone structures, which is caused, first of all, by their significant mechanical properties and lightness. However, their fragility and relative high cost is an obstacle to the widespread use of this material. The introduction of 3D-technologies allows to reduce the cost of manufacturing building structures from composite materials, to increase their quality and manufacturability. 3D technologies also simplify the erection process and enable the implementation of complex architectural solutions.
Optimal dry mixes simulating
Authors: Ilina L V , Mukhina I N , Tulyaganov A K 
Published: November 2020

Abstract
When applying mortar mixes in thin layers on porous substrates, moisture is released from the mortar mix. As a result, such operational characteristics of the solution as bending strength, compressive strength, adhesion strength and crack resistance can be reduced. The introduction of modifying additives, such as: dispersed mineral additive, powder polymers and fibers, allows providing these indicators at the required level. In order to simulate the composition of the dry mix with modifying additives, multivariate design of the experiment was carried out, regression equations were obtained, statistical analysis of the proposed equations was carried out, which confirmed their significance. The verified model showed a high degree of correspondence between the values calculated by the regression equations and experimental data. The procedure of regression equations maximizing made it possible to determine the optimal composition of dry construction mixes depending on their functional purpose, hardening conditions and operation.
Sol-gel technology for the production of high-strength refractory materials based on binders
Authors: Pogorelov S N , Semenyak G S , Kolmogorova A O 
Published: November 2020

Abstract
The technology of production of die tooling based on high-alumina cement, used for the manufacture of aluminum alloys, transforming into a plastic state at high temperatures, is considered. This technology is based on the sol-gel method, characterized in that the formation of a crystalline high-strength structure for die tools based on high-alumina cement occurs cyclically with stage exposure at certain temperatures. First, a sol is formed-a free dispersed system, then a gel structure-a bound dispersed system. The final structure is crystalline, high strength with a compressive strength of up to 180-190 MPa. A distinctive feature is the possibility of destruction of the form after the manufacture of products. This is necessary because the manufactured products have a developed geometric shape and the product can not be obtained from the mold by ordinary removing the formwork.