bluuebunny/crossref_metadata_2025_split huggingface dataset:
The development of technology for production of zeolites from fly-ash from Troitskaya power plant
Authors: Snegirev V. A. , Yurk V. M. 
Published: April 2021

The study examines the technology of processing fly ash from Troitskaya power plant for the production of zeolite. The paper presents the results of laboratory studies evaluating the suitability of fly ash from Troitskaya power plant for the production of zeolites and the development of the zeolite production process. Fly ash contains a small amount of heavy metals that can complicate processing, but contains a large amount of silicon oxide. The technology consists of high-temperature alkaline activation of fly ash and hydrochemical synthesis. The resulting powder has a specific surface area of 89.7 m2/g, determined by the BET method, and an average pore diameter of 0.345 μm. The static exchange capacity was 220 mg/g.
Methodology for the organisation of professional training of senior citizens: general concept
Authors: Rezer T. M. 
Published: April 2021

Introduction. The process of population aging in modern civilisation is developing at an increasing pace. Russia has not remained aloof from this trend. Intense aging of the population will lead, in particular, to the fact that older people will become a necessary resource for the labour market as well as for the society activity at both macro- and micro-levels. Continuing active employment of senior citizens is a new challenge facing states.The aim of present conceptual article is to theoretically substantiate and to develop approaches for building a model for organisation of senior citizens' professional training (persons from 50 to 70 years old). This type of training requires to be based on andragogy and geronto-gogy principles and to be targeted at continuing of labour activity by this category of population through acquisition of new professional knowledge and competencies.Methodology and research methods. The current research is based on the methodology of system-based analysis of theoretical sources, foreign and Russian pedagogical experience. Interdisciplinary and complex approaches were used to build the concept of the model to organise professional training of senior citizens.Results and scientific novelty. The obtained results allowed the author to conclude that at present stage of the Russian state and Russian society development, there is a need for scientific interdisciplinary knowledge, which substantiates the principles and didactic support of professional training of senior citizens in order to continue their active labour activity and to propose the concept for building the model for the organisation of such training. The conceptual model for the organisation of professional training of senior citizens is developed from the point of system-based approach and includes the following elements: 1) clarification of conceptual apparatus of senior adult education; 2) determination of anatomical and physiological features of senior citizens; 3) argumentation of the need of senior citizens for professional training; 4) determination of the peculiarities of professional training for senior citizens; 5) development of prerequisites list for successful learning of senior citizens; 6) formulation of learning objectives and tasks for its organisation; 7) choice of approaches for building the model of training and its principles as well as methodology for determining the quality and results of training.Practical significance. The proposed concept of the model for the organisation of professional training of senior citizens can be used as a basic concept for further theoretical and practical developments in this field.
Szacowanie ilości materii organicznej na podstawie zawartości pierwiastków śladowych
Authors:   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Przelaskowska Anna , Zagórska Urszula ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Mroczkowska-Szerszeń Maja ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Ziemianin Konrad ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy
Published: April 2021

Many trace elements are associated with organic matter. The total organic carbon (TOC) content can be thus calculated basing on the chemical composition measurements. The aim of the presented paper was to evaluate the possibility of estimating the organic matter amount on the basis of trace elements such as: Ni, Cu, Mo, U, V, Zn, Cr, Sr, Pb and Co, for Silurian black shales. Correlations between individual elements and total organic carbon were analysed. Next, mathematical models allowing to calculate the amount of organic matter based on the content of elements significantly related to TOC were constructed. Both more accurate chemical composition analyses (ICP-MS mass spectrometry method) and measurements of lower detectability performed with portable X-ray fluorescence spectrometer EDXRF were used. The relationships between the content of trace elements and the total organic carbon content TOC were found for such elements as: V, Cu, U, Ni, Mo, Cr (ICP-MS) and V, Cu , Cr and Ni (XRF). Mathematical models allowing for TOC quantification based on trace elements, characterized by determination coefficients R2 from 0.84 to 0.92 (for ICP MS method) and from 0.75 to 0.78 (for XRF method) were obtained with the use of the multiple regression method. The mathematical models allow to calculate the content of organic matter TOC for Silurian black shales on the basis of trace element data obtained by both mass spectrometry ICP-MS and X-ray fluorescence spectrometry EDXRF. The possibility of using measurements made with a portable X-ray fluorescence spectrometer is particularly important. Such measurements are fast and can be carried out on cuttings during the drilling process. Models based on XRF results therefore allow for quick modelling of the TOC content during the drilling process.
PRÁTICAS DA PERCEPÇÃO - PERFORMANCE E ARTIVISMO EM ISOLAMENTO SOCIAL
Authors: Lopes Pâmela Fogaça , Galindo Tais Dias , De Medeiros Rosângela Fachel 
Published: April 2021

Este é um relato de experiência onde se abordam procedimentos de uma prática artivista intitulada “Da percepção”, que se desdobrou até o presente momento em três ações. Uma performance apresentada em 2019; uma oficina-performance e uma vídeo-arte realizadas em 2020, durante o período de isolamento. O texto discorre sobre a prática performática com base em referências do campo da performance, do teatro, do pensamento feminista latino-americano e artivismo, tais como: Mónica Mayer; Andrea Giunta; Eleonora Fabião e Renato Cohen.
Une ontologie dispositionnelle du risque
Authors: Grenier Olivier , Barton Adrien 
Published: April 2021

Le risque est une entité omniprésente dans le domaine biomédical. Une caractérisation ontologique cohérente du risque est donc nécessaire pour faciliter l'échange et le rassemblement des données informatiques du domaine biomédical à des fins cliniques et des fins de recherche à l'aide d'outils nommés « ontologies appliquées ». Nous analysons certaines définitions du risque et en tirons deux traits généraux que le risque partage avec les dispositions. Nous proposons par conséquent une définition du risque comme une disposition dont la réalisation est indésirable pour un agent. Cette définition permet de concilier la dimension objective et la dimension subjective du risque : un risque existe indépendamment de notre connaissance de celui-ci, mais le statut de risque d'une disposition pour un agent dépend des préférences de cet agent.
Biplanar Osteosynthesis for Severely Displaced Proximal-Third Clavicle Fracture
Authors: Zúñiga Daniela Gutiérrez , García Luisa Fernanda , Leal Jaime Andrés 
Published: April 2021

Case:
We present the case of a 41-year-old man with a displaced extra-articular proximal-third clavicle fracture managed with open reduction and double-plate internal fixation. Twelve months after the procedure, the patient had recovered full range of motion and returned to work.

Conclusions:
Proximal-third clavicle fractures are infrequent injuries and are usually treated conservatively. They are associated with thoracic injuries or high-energy dorsal or cervical spinal trauma. In the case of displaced fractures and small medial fragments, orthopaedic management may have unsatisfactory results, creating symptomatic nonunions and functional limitation, we propose a biplanar osteosynthesis, which could be an effective treatment.
Fuzzy Representation of Environmental Flow in Multi-Objective Risk Analysis of Reservoir Operation
Authors: Li Jiqing , Huang Jing , Liang Pengteng , Lund Jay R. 
Published: April 2021

Abstract
In the context of water shortages, environmental flow is the key to alleviating the negative environmental impact of reservoir operation. Environmentally, the suitable stream flow for the survival and reproduction of aquatic organisms is a varying range, although most of studies now give it a fixed value, which leads to unreasonable resource allocations. In this study, we proposed a fuzzy representation of environmental flow by using the fuzzy theory and the ecological hydraulic radius. Furthermore, we used the Three Gorges-Gezhouba cascade reservoirs as a study case and Four Major Chinese Carps as indicator species. In addition, a multi-objective operation optimization model was established, which solved by the Evolver Palisade software, and a multi-objective risk analysis method was proposed based on the design reliability and risk rate of various benefit operations. The results show that: (1) Based on the environmental flow membership function, flow ranges suitable for the aquatic organism survival and reproduction at specific locations can be determined to help guide reservoir discharge. (2) Taking environmental flow membership as an optimization objective rather than a constraint is conducive to formulating environmentally friendly reservoir operation schemes and make more rational use of water resources. (3) The multi-objective risk analysis can avoid the one-sidedness of a single objective and analyze the risks brought by various benefit operations. Ecological demand has long been a factor considered when formulating reservoir operation schemes. Following the environmentally friendly operation scheme is helpful to protect the environment and maximize the overall benefits of reservoirs.
Precision cooking for printed foods via multi-wavelength lasers
Authors: Blutinger Jonathan , Tsai Alissa , Storvick Erika , Seymour Gabriel , Liu Elise , Samarelli Noà , Karthik Shravan , Meijers Yorán , Lipson Hod 
Published: April 2021

Abstract
Additive manufacturing of food is a method of creating three-dimensional edible products layer-by-layer. While food printers have been in use since 2007, precision cooking appliances to simultaneously cook and print food layers do not yet exist. A key challenge has been the spatially controlled delivery of cooking energy. Here, we explore precision laser cooking which offers precise temporal and spatial control over heat delivery and the ability to cook, broil, cut and otherwise transform food products via customized software-driven patterns, including through packaging. Using chicken as a model food, we combine the cooking capabilities of a blue laser (λ = 445 nm), a near-infrared (NIR) laser (λ = 980 nm), and a mid-infrared (MIR) laser (λ = 10.6 µm) to broil printed chicken and find that IR light browns more efficiently than blue light, NIR light can brown and cook foods through packaging, laser-cooked foods experience about 50% less cooking loss than foods broiled in an oven, and calculate the cooking resolution of a laser to be approximately 1 mm. Infusing software into the cooking process will enable more creative food design, allow individuals to more precisely customize their meals, disintermediate food supply chains, streamline at-home food production, and generate horizontal markets for this burgeoning industry.
Potential of Nb2O5 nanofibers in photocatalytic response for organic pollutants remediation
Authors: Jesus Edson Tobias , Moreira Ailton José , Sá Mayara Coelho , Freschi Gian Paulo Giovanni , Joya Miryam Rincón , Li Maximo Siu , Paris Elaine Cristina 
Published: April 2021

Abstract
Due to the pollution caused by different organic pollutants, various photocatalytic nanomaterials for environmental remediation have been promoted. In this study, Nb2O5 nanofibers were obtained by electrospinning technique, presenting controlled crystallinity and high specific surface area to improve the photoactivity response. The structural characterization indicated Nb2O5 nanofibres with orthorhombic phase formation, and the photoluminescence measurements showed different energy levels contributing to the electronic transition events. The nanofibers with a bandgap up to 3.6 eV were applied to photocatalysis of dyes [Rhodamine B (RhB) or Methylene Blue (MB)], and Prozac®, listed as an emergent pollutant. In the optimized condition (pH = 9), the RhB and MB photocatalysis was 59% and 93% more efficient than photolysis due to ζ = − 50 ± 5 mV for EtOH_550 sample that increased the interaction with MB (cationic) compared to RhB unprotonated (pKa = 3.7). Therefore, Prozac® (pKa = 10.7) was selected due to protonated form at pH = 9 and showed 68% ±1 adsorption in 30 min for EtOH_550. The Prozac® photocatalytic degradation under UV light irradiation was up to 17% higher than the photolytic degradation. The formation of hydroxyl radicals in the photocatalytic system (EtOH_550) was proven by the Coumarine probe assay, corroborating with the greater amount of α-[2-(Methylamino)ethyl]benzylalcohol (MAEB), a by-product obtained after Prozac® oxidation. Additionally, the material achieved specific catalytic activity for the different organic compounds (RhB, MB, or Prozac®), showing that only using dyes may not be ideal to conclude the great material applicability in environmental remediation studies. Therefore, Nb2O5 nanofibers were efficient for the degradation of three different pollutants under UV light, proving to be a viable alternative for environmental remediation.
Automated classification of human lung sound signals using phase space representation of intrinsic mode function
Authors: Khan Sibghatullah I. , Palodiya Vikram , Poluboyina Lavanya 
Published: April 2021

Abstract
Bronchiectasis and chronic obstructive pulmonary disease (COPD) are common human lung diseases. In general, the expert pulmonologistcarries preliminary screening and detection of these lung abnormalities by listening to the adventitious lung sounds. The present paper is an attempt towards the automatic detection of adventitious lung sounds ofBronchiectasis,COPD from normal lung sounds of healthy subjects. For classification of the lung sounds into a normaland adventitious category, we obtain features from phase space representation (PSR). At first, the empirical mode decomposition (EMD) is applied to lung sound signals to obtain intrinsic mode functions (IMFs). The IMFs are then further processed to construct two dimensional (2D) and three dimensional (3D) PSR. The feature space includes the 95% confidence ellipse area and interquartile range (IQR) of Euclidian distances computed from 2D and 3D PSRs, respectively. The process is carried out for the first four IMFs correspondings to normal and adventitious lung sound signals. The computed features depicta significant ability to discriminate the two categories of lung sound signals.To perform classification, we use the least square support vector machine with two kernels, namely, polynomial and radial basis function (RBF).Simulation outcomes on ICBHI 2017 lung sound dataset show the ability of the proposed method in effectively classifying normal and adventitious lung sound signals. LS-SVM is employing RBF kernel provides the highest classification accuracy of 97.67 % over feature space constituted by first, second, and fourth IMF.
Design of All-Optical Directional Coupler Using Plasmonic MIM Waveguide for Switching Applications
Authors: Nanda Rupalin , Rath Ramakrushna , Swarnakar Sandip , Kumar Santosh 
Published: April 2021

Abstract
In this paper, we have proposed, analyzed, and verified theperformance of an optimized plasmonic 10-dB directional coupler and a 3-dB directional coupler in 2-D plasmonic waveguides using finite-difference-time-domain (FDTD) method. A plasmonic 10-dB directional coupler and a 3-dB directional coupler are based on the metal-insulator-metal (MIM) slab waveguide and analyzed at the telecommunication wavelength (λ) of 1550 nm. Here, coupling and transmission characteristics are analyzed with the optimized separation distance between the two parallel waveguides. The developed approach ensures the minimization of the crosstalk and overall directional coupler length via simultaneous adjustment of the separation distance between the parallel waveguide and length of the linear waveguide. Then an optimized structure is acquired by trading off between coupling length and separation distance. The proposed 10-dB directional coupler and 3-dB directional coupler features good energy confinement, ultra-compact and low propagation loss, which has potential applications in photonic integrated devices, optical signal processors, and other all-optical switching devices.
Tanshinone IIA Prevents Acetaminophen-Induced Nephrotoxicity by Stimulating the Efflux of its Toxic Intermediate Metabolite From Kidney
Authors: Zhang Xiqian , Wang Ting , Li Ruina , Yang Yujie , Long Fangyi , He Qin , Xu Min , Wang Ling , Jiang Xuehua 
Published: April 2021

Abstract
It’s known that acetaminophen (APAP) overdose often leads to hepatotoxicity and nephrotoxicity. Previous studies have shown that Tanshinone IIA (Tan IIA) could protect against APAP-induced hepatotoxicity via activating the Nrf2 pathway. In the present study, we further investigated the preventative effect of Tan IIA to APAP-induced nephrotoxicity. Oral supplementation of Tan IIA (30 mg/kg/day) prior to APAP intoxication (200 mg/kg) dramatically reduced APAP-induced nephrotoxicity as evidenced by histopathological evaluation and serum CRE levels. Tan IIA pretreatment promoted the efflux of the toxic intermediate metabolite N-acetyl-p-benzoquinone imine (NAPQI) from mouse kidney, thus reducing its injury to tissue. After Tan IIA pretreatment, significant induction of Nrf2, Mrp2, and Mrp4 mRNA and protein expression was detected in Nrf2+/+ mice kidneys, however, much lower increase of Mrp2 and Mrp4 mRNA and protein expression was observed in Nrf2−/− mice kidneys. Consistent with our observations in vivo, Tan IIA increased the mRNA and protein expression of Nrf2-MRP2/4 pathway and promoted the nuclear Nrf2 accumulation compared with APAP treatment alone in HK-2 cells. Collectively, the findings in this study demonstrated that Tan IIA facilitates the clearance of toxic intermediate metabolite NAPQI from the kidney by up-regulating the Nrf2-Mrp2/4 pathway, thereby, performing a preventive effect against APAP-induced nephrotoxicity.
Joint Transcriptomic and Metabolomic Analysis Reveals the Mechanism of Low Temperature Tolerance in Hosta Ventricosa
Authors: Zhuang QianQian , Chen Shaopeng , Jua ZhiXin , Yue Yao 
Published: April 2021

Abstract
Background: Hosta ventricosa is a robust ornamental perennial plant that can tolerate low temperatures, and which is widely used in urban landscaping design in Northeast China. However, the mechanism of cold stress tolerance in this species is unclear. Methods:This study used a combination of transcriptomic and metabolomic analysis to explore the mechanism of low temperature tolerance in H. ventricosa.Results: A total of 12 059 differentially expressed genes (DEGs) and 131 differentially expressed metabolites were obtained, which were mainly concentrated in the signal transduction and phenylpropanoid metabolic pathways. In the process of low temperature signal transduction, H. ventricosa is mainly through the ion channels on the three cell membranes of COLD, CNGCs and CRLK to transmit Ca2+ inside and outside the cell to sense temperature changes, and stimulate SCRM to combine with DREB through the MAPK signal pathway and Ca2+ signal sensors such as CBL. Strengthen the low temperature resistance of H. ventricosa. The pathways of phenylpropanoid and flavonoid metabolism represent the main mechanism of low temperature tolerance in this species. The plant protects itself from low temperature damage by increasing its content of genistein, scopolentin and scopolin. It is speculated that H. ventricosa can also adjust the content ratio of sinapyl alcohol and coniferyl alcohol and thereby alter the morphological structure of its cell walls and so increase its resistance to low temperatures.Conclusions: In H. ventricosa that is subjected to low temperature stress, temperature changes are perceived through COLD, CNGCs and CRLK, and protection from low temperature damage is achieved by an increase in the levels of genistein, scopolentin and scopolin through the pathways of phenylpropanoid biosynthesis and flavonoid biosynthesis.
The applied ability in infant crawling and the importance of prone motor experience for subsequent development
Authors: Yamamoto Shimpei , Lee Yeonghee , Matsumura Umi , Tsurusaki Toshiya 
Published: April 2021

Abstract
Background: In the process of motor learning in human, many movement patterns, that is, many variations, are tried first, and more efficient movements come to be selected based on experience of trial and error. Although this process for selection (i.e., variability) is particularly active in infancy neurodevelopment and motor development, few studies have explored the variation / variability of infant crawling.Aims: The first is to investigate the difference in the variability of hands-knees crawling between typically developing infants with and without belly crawling experience. The second is to examine the relationship between development after 2 years of age and crawling variability.Study design: This study was longitudinal. Crawling variability was evaluated by encoding crawling variation in infants not pointed out neurological or orthopedic problems. We investigated the differences in the quantity and content of hands-knees crawling variation between infants with and without belly crawling experience. Further, we retrospectively explored the difference in the whole quantity of crawling variation during both belly and hands-knees crawling stages between two groups, suspicious and normal in DENVER Ⅱ conducted after 2 years of age.Results: The quantity of hands-knees crawling variation was significantly smaller in the group with belly crawling experience than the group without the experience. On the other hand, the content of hands-knees crawling variation was almost the same between these two groups. In addition, there was a significant difference in the whole quantity of crawling variation between the suspicious and the normal group.Conclusions: The current study shows that infants improve the learning efficiency and variability of hands-knees crawling movements by applying skills acquired through belly crawling experience, which provides one interpretation of the importance of sensorimotor experience in the prone position in infancy. Furthermore, this study suggests a link between crawling variability and subsequent development.