bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of ion treatment in the production of thin multilevel surface layers
Authors: Nasakina E O , Sudarchikova M A , Novikova D A , Kurganova Yu A , Fakhurtdinov R S , Baikin A S , Baranov E E , Prutskov M E , Kolmakov A G , Sevostyanov M A 
Published: June 2021

Abstract
The regularities of the formation of titanium and tantalum multilayers with the use of magnetron sputtering and ion bombardment were investigated depending on the varied technological parameters. Metallic composite materials had a multilayer structure. The surface morphology at low radiation doses in the course of preliminary ion etching corresponds to the substrate surface morphology. With a long duration/energy of ion bombardment, a thin surface structure in the form of point depressions is observed, smoothed by a layer deposited from above, and the length of the layer and its crystallinity also increase. The transition layer ensures high adhesion of the surface layer to the substrate.
An air cavity above a complex vortex: an experimental and analytical study of the features of its lower part
Authors: Kistovich A V , Chaplina T O , Stepanova E V 
Published: June 2021

Abstract
The description of the experiments with the water vortex generated in a variety of facilities by means of different activators is presented. The changes in the form and size of the air cavity above such a vortex are studied for different regimes of rotations. An analytical description for the free surface form of the water vortex is given, which is in good agreement with both experimental data and previously obtained relations based on fundamental hydrodynamics equations. The problem of the “spout’s” volume of the air cavity is also considered. It is shown that “spout’s“ volume can be used for calculating of the radius of the water “solid-state” rotation. Estimated calculations of the “spout’s“ volume based on experimental data are made.
Screening of different Fe (II) and Fe (III) complexes at the stage of rhizogenesis in vitro of gooseberry plants
Authors: Nikulina E A , Akimova S V , Tsirulnikova N V , Glinushkin A P , Dolgoborodov I O , Kirkach V V 
Published: June 2021

Abstract
During clonal micropropagation of the Pink-2 (Rosovy-2) gooseberry cultivar at the stage of rhizogenesis, the efficiency of modification of the media with mineral salts according to Quoirin-Lepoivre (QL) was shown by replacing iron, which is standardly used in the form of FeSO4×7H2O together with Na2EDTA, with chelated forms with carboxyl-containing ligands Fe(III)-EDTA and Fe(III)-DTPA and the organophosphate complexone Fe(II)-HEDP. On the 45th and 60th days of subculturing, the distribution in descending order of the impact of chelate iron compounds on the rooting rate of the studied gooseberry plants was as follows: Fe(III)-EDTA>Fe(III)-DTPA> Fe(II)-HEDP> Fe(III)-EDDHA>Fe(III)-HEDP. On the 60th day of subculturing in the best variants of the experiment, the rooting rate of gooseberry microcuttings of cultivar Pink-2 was 86.7-100% compared to 60% in the control variant.
ASSESSMENT OF THE STATE AND RESTORATION OF BIOLOGICAL RESOURCES OF SCOTS PINE (PINUS SILVESTRIS L.) IN THE SOUTH OF THE CENTRAL RUSSIAN UPLAND
Authors: Cherniavskih V I , Dumacheva E V , Markova E I 
Published: June 2021

Abstract
The paper deals with an assessment of the current state and prospects for the creation of artificial forest plantations based on Pinus silvestris L. to increase the bio resource potential of the south of the Central Russian Upland. There have been tested and methodically substantiated various methods of creating long-term forest plantations based on Pinus silvestris L. by improving the methods of sowing seeds. Evaluation of the effectiveness of various methods of sowing pine has shown that more guaranteed and uniform seedlings and further development of seedlings provide sowing with cones. Having an equal number of seed holes when sowing with seeds and cones, it can be stated that the number of holes in which seedlings appeared during sowing with cones is 56.8% higher, the survival rate of seedlings is 34.6% higher, the number of seedlings is 25% higher, and the number plants per hole – by 50%. Sowing with cones is economically more profitable-no need to engage in costly threshing of seeds; cones are easier to plant during mass plantings in the process of laying artificial forest plantations; cones have a high hygroscopicity, the seeds are constantly in a moist state and germinate well, regardless of the conditions of soil and air moisture.
Composite Soils- the Basis for Sustainable Agricultural Development
Authors: Glihushkin A P , Sviridova L L , Sycheva I I , Grishina E V , Sevostyanov M A 
Published: June 2021

Abstract
The article reviews scientific publications on artificial soils. The ambiguity of this thematic problem is a great interest to the world community as resource endowment on a planetary scale is declining without the right to recovery. Humanity as a whole has no choice but to think of scientifically based concepts to recreate the conditions for survival. The paper describes the main directions of combining soil mixtures, developed technologies of application, results of influence of composite materials on plant growth functions.
Development of an optical system for lighting rooms with biologically safe and environmentally friendly sunlight
Authors: Gureeva I M , Briushinin A A , Savin D D , Diuldin M V 
Published: June 2021

Abstract
The article discusses the development and advantages of an optical system for lighting rooms with biologically safe and environmentally friendly sunlight. A passive system that does not consume energy is proposed. The analysis of artificial light sources by their spectral composition is carried out. It was found that the spectral composition most suitable for a comfortable human condition is an incandescent lamp, which has several limitations. It is established that the most environmentally friendly and safe solution is the use of sunlight. An energy-efficient natural light system has been developed, creating a comfortable environment for the eyes, well-being, and mood of a person.
Monitoring the state of flowing water in purification and water supply systems
Authors: Isakov F A , Svyatkina V I , Diuldin M V 
Published: June 2021

Abstract
The article substantiates the need to control water at various stages of its purification before consumption. Several stages of water purification in the city of St. Petersburg are considered. The advantages and disadvantages of the used water control system are noted. Various options for monitoring the state of water in the pipeline between cleaning cycles are considered. The advantages of using a refractometer for monitoring the purity (quality) of water are shown.
The method of increasing the accuracy of coordinates of the contaminated area and water surfaces during environmental monitoring
Authors: Kulikova M E , Nagornaya A I , Diuldin M V 
Published: June 2021

Abstract
One of the methods for increasing the accuracy of compiling pollution maps based on the results of air and ground monitoring of environmental monitoring of territories is considered. It has been substantiated that for the study of large areas it is advisable to install equipment for monitoring the state of the environment on aircraft. To improve the accuracy of determining coordinates in difficult conditions, it is proposed to use a quasi-differential mode of operation of navigation equipment placed on an aircraft in the developed method. The aircraft is equipped with various equipment and moves at high speed, conducting research on large areas of the territory. At an aircraft speed of more than 250 km / h, the accuracy of determining the coordinates of 30 m for drawing up an ecological map on a large scale suits the services responsible for environmental safety. Based on these data, additional environmental monitoring is carried out only in areas where pollution is detected. This reduces the time for complete environmental monitoring and saves material resources.
The impact of the ecological state of the region of birth on the functional state of health
Authors: Mazing M S , Zaitceva A Y , Diuldin M V 
Published: June 2021

Abstract
The paper considers the problem of the impact of a complex of environmental factors and their impact on the health of young people. Young people aged 18 to 21 years old, who lived up to 18 years old in different environmental conditions, were examined in order to assess the general functional state of their body. The study used a developed non-invasive optical method for assessing the oxygen status of tissues and general functional state, as well as an independent biomedical study. The results of the experiment revealed the significance of the influence of the ecological factors of the region of birth on the functional state of health of the young generation.
Efficient treatment of wastewater from galvanic plants
Authors: Cheremisin A V , Valiullin L R , Myazin N S , Logunov S E 
Published: June 2021

AbstractThe article discusses a promising method for the purification of chromium-containing wastewater from galvanic plants. A review and comparative analysis of existing methods and technologies for treatment of industrial waste from various organochromium compounds, such as reagent-based, biological, ion-exchange and others, are presented. The advantages of using the combined method of chromium-containing wastewater treatment based on electroflotation with preliminary electrocoagulation are shown. The effectiveness of the proposed combined method is evaluated and the design of electroflotocoagulator is developed.
Environmental monitoring of workplace lighting using optical Internet
Authors: Savin D D , Gureeva I M , Briushinin A A , Diuldin M V 
Published: June 2021

Abstract
The article shows the need for efficient use of electric energy in order to preserve the resources and environmental health of the planet. The necessity of the modernization of existing systems control the ambient light in the area of jobs solution to the problems of ecology eyes. The method of control and adjustment of illumination of workplaces and zones where it, is necessary is offered. A control system using the optical Internet has been developed. The simulation of the system operation was carried out, the possible amounts of saving electric energy, natural resources and reducing the negative impact on the environment were determined.
An integrated approach to the study of ecosystem state for soil and vegetation cover of urban areas
Authors: Cheremisin A V , Chusov A N , Fedorov M P , Switala F , Valiullin L R , Shurupov D N 
Published: June 2021

Abstract
The article substantiates the need for a comprehensive assessment of the state of the ecosystem. To do this, it is necessary to perform studies of the state of the soil, water and vegetation cover using various devices. The studies were carried out both in a stationary laboratory using samples taken from the territory, and in the field using devices for express control. For additional control of the vegetation cover, the results of video filming and research carried out using a thermal imager and radar stations were used. The latter method is extremely effective if the soil or plants contain large amounts of radioactive substances or heavy metals. For research, previously compiled maps of contamination of territories using GIS technologies were used. Comparison of these data will help to establish the causal factors of pollution. In addition, it is possible to identify the migration of pollution under the influence of various climatic phenomena, etc. The use of high-resolution instruments (for example, an X-ray spectrometer or a power optical microscope) allows one to determine the entire spectrum of contamination in soil, water and on plant samples. This allows in the future to assess the behavior of chemical elements in the “soil-plant” system to determine the possibility of cleaning the area using plants. Of particular interest is the burning of fallen leaves with burying waste in the ground.
Assessment of risk, damage and environmental safety of emergency situations at energy facilities
Authors: Lukashev N A , Valov A P , Arinushkina K G , Diuldin M V 
Published: June 2021

Abstract
It has been substantiated that the most stable source of energy at any time are nuclear power plants and hydroelectric power plants. It is noted that these sources of electric power generation are the most dangerous in the event of an emergency for nature and humans. In addition, nuclear power generates dangerous sources of pollution during its operation. The article compares the levels of pollution emanating from traditional energy sources and nuclear power plants.
Investigation of the structure and mechanical properties of stainless steel alloyed with silver
Authors: Kaplan M A , Ivannikov A Yu , Gorbenko A D , Mikhailova A V , Kirsankin A A , Kalaida T A , Konushkin S V , Sevostyanov M A 
Published: June 2021

Abstract
The paper contains information of the development of technology for smelting stainless steel for application in the manufacture of medical devices. Smelting was carried out in electric arc vacuum furnaces. The technology has been developed for producing sheets with a thickness of 1 ÷ 1.25 mm for further research of mechanical properties. To study the structure, thin sections of the alloys were obtained by melting and further rolling. The mechanical properties of the samples and their structure have been studied. The results show that the addition of a small amount of silver decreases the mechanical properties of the steel. In the ingots, a dendritic structure is observed, and after warm rolling, the structure has a pronounced fine-grained austenitic structure.
Electromagnetic effects of equatorially misaligned RF cavities
Authors: Karatay A. , Yaman F. 
Published: June 2021

Abstract
One of the most challenging problems in modern particle accelerator systems is the manufacture of RF cavities within the desired tolerance limits. In this study experimental and computational investigations to quantify the effects of transversal half-cell misalignments on the fundamental accelerator cavity parameters and beam dynamics are presented. Equivalent circuit components of an equatorially misaligned single-cell aluminum elliptical cavity are obtained from the measured data and are employed to calculate longitudinal impedance and modal wake function. Critical coupling and bead-pull measurements are performed at the TM010-like mode frequency, 2.45 GHz for the quality factor and shunt impedance of the high-β cavity. We report equivalent circuit analysis for higher-order modes and variations of the equivalent circuit components with respect to considered misalignment errors for the MICE experiment's muon cooling cavity. It is shown that using the equivalent circuit model decreases the computational load significantly for the wake field simulations of resonator cavities. Good agreement between simulations and measurements in terms of accelerating cavity parameters and impedances is illustrated.
Efficient description of experimental effects in amplitude analyses
Authors: Mathad A. , O'Hanlon D. , Poluektov A. , Rabadan R. 
Published: June 2021

Abstract
Amplitude analysis is a powerful technique to study hadron decays. A significant complication in these analyses is
the treatment of instrumental effects, such as background and selection efficiency variations, in the multidimensional
kinematic phase space. This paper reviews conventional methods to estimate efficiency and background
distributions and outlines the methods of density estimation using Gaussian processes and artificial neural networks.
Such techniques see widespread use elsewhere, but have not gained popularity in use for amplitude analyses.
Finally, novel applications of these models are proposed, to estimate background density in the signal region from the sidebands in multiple dimensions, and a more general method for model-assisted density estimation using artificial neural networks.
A comparative analysis of green financial policy output in OECD countries
Authors: Steffen Bjarne 
Published: June 2021

Abstract
The mitigation of dangerous climate change requires massive investments in low-carbon technologies. Accordingly, the redirection of finance flows is a key objective of the Paris Agreement, and countries have started to enact policies to influence financial actors to this end. However, transparency on such policies is low, and it is hardly possible to compare policy activity internationally. To fill this gap, here we present a comparative analysis of green financial policy output in OECD countries from 2001 to 2019, based on a newly compiled inventory of 136 policies from 29 countries and the European Union. We show that policy output accelerated rapidly since the Paris Agreement, with countries implementing 3.3 policies on average using various governing resources. Key instruments include carbon disclosure requirements, low-carbon investment policies for public funds, and green state investment banks. However, there are huge differences in policy output between countries, and some countries that host important financial centers have implemented few policies to date. On the basis of our results, we develop a research agenda to deepen the understanding of this important but little-studied area of climate policies.
A wrinkled ZnO/MCM-41 nanocomposite: hydrothermal synthesis and characterization
Authors: Panecatl-Bernal Yesmin , Juárez Rodolfo Lima , de Vasconcelos Elder Alpes , Chávez Portillo Melissa , de Azevedo Walter Mendes , Méndez-Rojas Miguel-Ángel , Garrido-Rosado Rafael , Villanueva-Cab Julio , Iniesta Salvador Alcántara , Alvarado Joaquín 
Published: June 2021

Abstract
ZnO/MCM-41 composites consisting of loose particles with an irregular, wrinkled surface and flower-like morphology were obtained by adding MCM-41 to a mixture of zinc nitrate hexahydrate and hexamethylenetetramine under hydrothermal conditions. The physical properties of this composite were determined by scanning electron microscopy (SEM), x-ray powder diffraction (XRD), Fourier Transform Infrared spectroscopy (FTIR), and photoluminescence spectroscopy (PL). The XRD analysis showed the characteristic diffractogram corresponding to silica overlapped with ZnO peaks, with a reduction in the sharpness and peak intensity, which may be the result of spatial disorder and defects, combined with anisotropic preferential growth. The FTIR spectrum had the characteristic vibrations expected for a silica framework, containing adsorbed water molecules, nitrate ions, and Zn–O bonds. This novel structure may be of particular interest from both fundamental and applied perspectives. It can be advantageous for the adsorption and capture of small molecules. Therefore, it may improve the performance of some previously investigated uses for these ZnO/MCM-41composites, such as photocatalysis and adsorbents for pollutants removal. To the best of our knowledge, this is the first time that wrinkled ZnO/MCM-41 nanocomposite obtained by a low-cost and easy method is reported.
Chromatin loop anchors predict transcript and exon usage
Authors: Zhang Yu , Cai Yichao , Roca Xavier , Kwoh Chee Keong , Fullwood Melissa Jane 
Published: June 2021

Abstract
Epigenomics and transcriptomics data from high-throughput sequencing techniques such as RNA-seq and ChIP-seq have been successfully applied in predicting gene transcript expression. However, the locations of chromatin loops in the genome identified by techniques such as Chromatin Interaction Analysis with Paired End Tag sequencing (ChIA-PET) have never been used for prediction tasks. Here, we developed machine learning models to investigate if ChIA-PET could contribute to transcript and exon usage prediction. In doing so, we used a large set of transcription factors as well as ChIA-PET data. We developed different Gradient Boosting Trees models according to the different tasks with the integrated datasets from three cell lines, including GM12878, HeLaS3 and K562. We validated the models via 10-fold cross validation, chromosome-split validation and cross-cell validation. Our results show that both transcript and splicing-derived exon usage can be effectively predicted with at least 0.7512 and 0.7459 of accuracy, respectively, on all cell lines from all kinds of validations. Examining the predictive features, we found that RNA Polymerase II ChIA-PET was one of the most important features in both transcript and exon usage prediction, suggesting that chromatin loop anchors are predictive of both transcript and exon usage.
Computationally scalable regression modeling for ultrahigh-dimensional omics data with ParProx
Authors: Ko Seyoon , Li Ginny X , Choi Hyungwon , Won Joong-Ho 
Published: June 2021

AbstractStatistical analysis of ultrahigh-dimensional omics scale data has long depended on univariate hypothesis testing. With growing data features and samples, the obvious next step is to establish multivariable association analysis as a routine method to describe genotype–phenotype association. Here we present ParProx, a state-of-the-art implementation to optimize overlapping and non-overlapping group lasso regression models for time-to-event and classification analysis, with selection of variables grouped by biological priors. ParProx enables multivariable model fitting for ultrahigh-dimensional data within an architecture for parallel or distributed computing via latent variable group representation. It thereby aims to produce interpretable regression models consistent with known biological relationships among independent variables, a property often explored post hoc, not during model estimation. Simulation studies clearly demonstrate the scalability of ParProx with graphics processing units in comparison to existing implementations. We illustrate the tool using three different omics data sets featuring moderate to large numbers of variables, where we use genomic regions and biological pathways as variable groups, rendering the selected independent variables directly interpretable with respect to those groups. ParProx is applicable to a wide range of studies using ultrahigh-dimensional omics data, from genome-wide association analysis to multi-omics studies where model estimation is computationally intractable with existing implementation.
The DNA methylation haplotype (mHap) format and mHapTools
Authors: Zhang Zhiqiang , Dan Yuhao , Xu Yaochen , Zhang Jiarui , Zheng Xiaoqi , Shi Jiantao 
Published: June 2021

Abstract

Summary
Bisulfite sequencing (BS-seq) is currently the gold standard for measuring genome-wide DNA methylation profiles at single-nucleotide resolution. Most analyses focus on mean CpG methylation and ignore methylation states on the same DNA fragments [DNA methylation haplotypes (mHaps)]. Here, we propose mHap, a simple DNA mHap format for storing DNA BS-seq data. This format reduces the size of a BAM file by 40- to 140-fold while retaining complete read-level CpG methylation information. It is also compatible with the Tabix tool for fast and random access. We implemented a command-line tool, mHapTools, for converting BAM/SAM files from existing platforms to mHap files as well as post-processing DNA methylation data in mHap format. With this tool, we processed all publicly available human reduced representation bisulfite sequencing data and provided these data as a comprehensive mHap database.

Availability and implementation
https://jiantaoshi.github.io/mHap/index.html.

Supplementary information
Supplementary data are available at Bioinformatics online.