bluuebunny/crossref_metadata_2025 huggingface dataset:
Removal of Cr (VI) by Biochar Derived from Six Kinds of Garden Wastes: Isotherms and Kinetics
Authors: Zhang Qiao-Chu , Wang Cheng-Chen , Cheng Jin-Hua , Zhang Cheng-Liang , Yao Jing-Jing
Published: June 2021

Garden waste is one of the main components of urban solid waste which affects the urban environment. In this study, garden waste of Morus alba L. (SS), Ulmus pumila L. (BY), Salix matsudana Koidz (LS), Populus tomentosa (YS), Sophora japonica Linn (GH) and Platycladus orientalis (L.) Franco (CB) was pyrolyzed at 300 °C, 500 °C, 700 °C to obtain different types of biochar, coded as SSB300, SSB500, SSB700, BYB300, etc., which were tested for their Cr (VI) adsorption capacity. The results demonstrated that the removal efficiency of Cr by biochar pyrolyzed from multiple raw materials at different temperatures was variable, and the pH had a great influence on the adsorption capacity and removal efficiency. GHB700 had the best removal efficiency (89.44%) at a pH of 2 of the solution containing Cr (VI). The pseudo second-order kinetics model showed that Cr (VI) adsorption by biochar was chemisorption. The Langmuir model showed that the adsorption capacity of SSB300 was the largest (51.39 mg·g−1), BYB500 was 40.91 mg·g−1, GHB700, CBB700, LSB700, YSB700 were 36.85 mg·g−1, 36.54 mg·g−1, 34.53 mg·g−1 and 32.66 mg·g−1, respectively. This research, for the first time, used a variety of garden wastes to prepare biochar, and explored the corresponding raw material and pyrolysis temperature for the treatment of Cr (VI). It is hoped to provide a theoretical basis for the research and utilization of garden wastes and the production and application of biochar.
Carbon-Silica Composite as Adsorbent for Removal of Hazardous C.I. Basic Yellow 2 and C.I. Basic Blue 3 Dyes
Authors: Wiśniewska Małgorzata , Wawrzkiewicz Monika , Onyszko Magda , Medykowska Magdalena , Nosal-Wiercińska Agnieszka , Bogatyrov Viktor
Published: June 2021

Treatment of wastewaters containing hazardous substances such as dyes from the textile, paper, plastic and food industries is of great importance. Efficient technique for the removal of highly toxic organic dyes is adsorption. In this paper, adsorptive properties of the carbon-silica composite (C/SiO2) were evaluated for the cationic dyes C.I. Basic Blue 3 (BB3) and C.I. Basic Yellow 2 (BY2). The sorption capacities were determined as a function of temperature (924.6–1295.9 mg/g for BB3 and 716.3-733.2 mg/g for BY2 at 20–60 °C) using the batch method, and the Langmuir, Freundlich and Temkin isotherm models were applied for the equilibrium data evaluation using linear and non-linear regression. The rate of dye adsorption from the 100 mg/L solution was very fast, after 5 min. of phase contact time 98% of BB3 and 86% of BY2 was removed by C/SiO2. Presence of the anionic (SDS), cationic (CTAB) and non-ionic (Triton X-100) surfactants in the amount of 0.25 g/L caused decrease in BB3 and BY2 uptake. The electrokinetic studies, including determination of the solid surface charge density and zeta potential of the composite suspensions in single and mixed adsorbate systems, were also performed. It was shown that presence of adsorption layers changes the structure of the electrical double layer formed on the solid surface, based on the evidence of changes in ionic composition of both surface layer and the slipping plane area. The greatest differences between suspension with and without adsorbates was obtained in the mixed dye + SDS systems; the main reason for this is the formation of dye-surfactant complexes in the solution and their adsorption at the interface.
Structural Features of Y2O2SO4 via DFT Calculations of Electronic and Vibrational Properties
Authors: Oreshonkov Aleksandr , Denisenko Yuriy
Published: June 2021

The traditional way for determination of molecular groups structure in crystals is the X-Ray diffraction analysis and it is based on an estimation of the interatomic distances. Here, we report the analysis of structural units in Y2O2SO4 using density functional theory calculations of electronic properties, lattice dynamics and experimental vibrational spectroscopy. The Y2O2SO4 powder was successfully synthesized by decomposition of Y2(SO4)3 at high temperature. According to the electronic band structure calculations, yttrium oxysulfate is a dielectric material. The difference between the oxygen–sulfur and oxygen–yttrium bond nature in Y2O2OS4 was shown based on partial density of states calculations. Vibrational modes of sulfur ions and [Y2O22+] chains were obtained theoretically and corresponding spectral lines observed in experimental Infrared and Raman spectra.
Fluorescent Probes for Live Cell Thiol Detection
Authors: Wang Shenggang , Huang Yue , Guan Xiangming
Published: June 2021

Thiols play vital and irreplaceable roles in the biological system. Abnormality of thiol levels has been linked with various diseases and biological disorders. Thiols are known to distribute unevenly and change dynamically in the biological system. Methods that can determine thiols’ concentration and distribution in live cells are in high demand. In the last two decades, fluorescent probes have emerged as a powerful tool for achieving that goal for the simplicity, high sensitivity, and capability of visualizing the analytes in live cells in a non-invasive way. They also enable the determination of intracellular distribution and dynamitic movement of thiols in the intact native environments. This review focuses on some of the major strategies/mechanisms being used for detecting GSH, Cys/Hcy, and other thiols in live cells via fluorescent probes, and how they are applied at the cellular and subcellular levels. The sensing mechanisms (for GSH and Cys/Hcy) and bio-applications of the probes are illustrated followed by a summary of probes for selectively detecting cellular and subcellular thiols.
Maternal Vitamin D and Newborn Telomere Length
Authors: Daneels Lisa , Martens Dries S. , Arredouani Soumia , Billen Jaak , Koppen Gudrun , Devlieger Roland , Nawrot Tim S. , Ghosh Manosij , Godderis Lode , Pauwels Sara
Published: June 2021

Nutrition is important during pregnancy for offspring health. Gestational vitamin D intake may prevent several adverse outcomes and might have an influence on offspring telomere length (TL). In this study, we want to assess the association between maternal vitamin D intake during pregnancy and newborn TL, as reflected by cord blood TL. We studied mother–child pairs enrolled in the Maternal Nutrition and Offspring’s Epigenome (MANOE) cohort, Leuven, Belgium. To calculate the dietary vitamin D intake, 108 women were asked to keep track of their diet using the seven-day estimated diet record (EDR) method. TL was assessed in 108 cord blood using a quantitative real-time PCR method. In each trimester of pregnancy, maternal serum 25-hydroxyvitamin D (25-OHD) concentration was measured. We observed a positive association (β = 0.009, p-value = 0.036) between newborn average relative TL and maternal vitamin D intake (diet + supplement) during the first trimester. In contrast, we found no association between average relative TL of the newborn and mean maternal serum 25-OHD concentrations during pregnancy. To conclude, vitamin D intake (diet + supplements), specifically during the first trimester of pregnancy, is an important factor associated with TL at birth.
Internet Access and Nutritional Intake: Evidence from Rural China
Authors: Xue Ping , Han Xinru , Elahi Ehsan , Zhao Yinyu , Wang Xiudong
Published: June 2021

Over the past 4 decades, China has experienced a nutritional transition and has developed the largest population of internet users. In this study, we evaluated the impacts of internet access on the nutritional intake in Chinese rural residents. An IV-Probit-based propensity score matching method was used to determine the impact of internet access on nutritional intake. The data were collected from 10,042 rural households in six Chinese provinces. The results reveal that rural residents with internet access have significantly higher energy, protein, and fat intake than those without. Chinese rural residents with internet access consumed 1.35% (28.62 kcal), 5.02% (2.61 g), and 4.33% (3.30 g) more energy, protein, and fat, respectively. There was heterogeneity in regard to the intake of energy, protein, and fat among those in different income groups. Moreover, non-staple food consumption is the main channel through which internet access affects nutritional intake. The results demonstrate that the local population uses the internet to improve their nutritional status. Further studies are required to investigate the impact of internet use on food consumed away from home and micronutrient intake.
Advanced Static and Dynamic Fluorescence Microscopy Techniques to Investigate Drug Delivery Systems
Authors: Cardellini Jacopo , Balestri Arianna , Montis Costanza , Berti Debora
Published: June 2021

In the past decade(s), fluorescence microscopy and laser scanning confocal microscopy (LSCM) have been widely employed to investigate biological and biomimetic systems for pharmaceutical applications, to determine the localization of drugs in tissues or entire organisms or the extent of their cellular uptake (in vitro). However, the diffraction limit of light, which limits the resolution to hundreds of nanometers, has for long time restricted the extent and quality of information and insight achievable through these techniques. The advent of super-resolution microscopic techniques, recognized with the 2014 Nobel prize in Chemistry, revolutionized the field thanks to the possibility to achieve nanometric resolution, i.e., the typical scale length of chemical and biological phenomena. Since then, fluorescence microscopy-related techniques have acquired renewed interest for the scientific community, both from the perspective of instrument/techniques development and from the perspective of the advanced scientific applications. In this contribution we will review the application of these techniques to the field of drug delivery, discussing how the latest advancements of static and dynamic methodologies have tremendously expanded the experimental opportunities for the characterization of drug delivery systems and for the understanding of their behaviour in biologically relevant environments.
Evaluation of the Physicochemical Properties of Chitosans in Inducing the Defense Response of Coffea arabica against the Fungus Hemileia vastatrix
Authors: López-Velázquez Julio César , Haro-González José Nabor , García-Morales Soledad , Espinosa-Andrews Hugo , Navarro-López Diego Eloyr , Montero-Cortés Mayra Itzcalotzin , Qui-Zapata Joaquín Alejandro
Published: June 2021

Chitosan is a natural polymer, and its biological properties depend on factors such as the degree of deacetylation and polymerization, viscosity, molecular mass, and dissociation constant. Chitosan has multiple advantages: it is biodegradable, biocompatible, safe, inexpensive, and non-toxic. Due to these characteristics, it has a wide range of applications. In agriculture, one of the most promising properties of chitosan is as an elicitor in plant defense against pathogenic microorganisms. In this work, four kinds of chitosan (practical grade, low molecular weight, medium molecular weight, and high-density commercial food grade) were used in concentrations of 0.01 and 0.05% to evaluate its protective effect against coffee rust. The best treatment was chosen to evaluate the defense response in coffee plants. The results showed a protective effect using practical-grade and commercial food-grade chitosan. In addition, the activity of enzymes with β-1,3 glucanase and peroxidase was induced, and an increase in the amount of phenolic compounds was observed in plants treated with high-molecular-weight chitosan at 0.05%; therefore, chitosan can be considered an effective molecule for controlling coffee rust.
In the Middle of Love: At the Fringes of Personhood. An Explorative Essay on the Dialogue of I and Thou and the Poetics of the Impersonal
Authors: Lysemose Kasper
Published: June 2021

In Works of Love, Søren Kierkegaard introduces the idea that God’s love is “the middle term.” It is a love that manages to be in the middle of all created being. To that extent, love is not just one relation among others, but the “being-in-relation” as such. It is, in Heideggerian terms, “the with” of being-with. This implies, further, that the middle is as inconspicuous as it is ubiquitous. According to Martin Buber, however, there is a privileged relation to the middle in the I–Thou relation. It is here that it reveals itself. For Buber, this is so on the strength of two important traits of this dyadic relation: that it is dialogical and personal. It is in dialogue that I and You are responsive to the word of God; and it is in personal co-presence that the theophany of “the absolute person” may occur. This paper explores these tenets of “philosophy of dialogue” at their fringes. Accordingly, it explores the impersonal in the person and the monologue in dialogue. More specifically, it aims to show how: (a) the impersonal in the person is disclosed in love and angst and how (b) the monologue in dialogue is expressed in a poetics of the impersonal.
Using Social Media for Citizen Participation: Contexts, Empowerment, and Inclusion
Authors: Lin Yanliu , Kant Stijn
Published: June 2021

Social media have been increasingly used by governments and planning professionals to gain public opinions, distribute information, and support participation in planning practices. Nevertheless, few studies have been conducted to understand the influence of local contexts and the extent to which social media can enhance citizen power and inclusion. This study investigates the role of social media in citizen participation by taking case studies in the Netherlands. It adopts a mixed methods approach that combines interviews, web scraping, and content analysis to understand the characteristics of social media participation. There are several key findings. First, support policies and a high level of social media penetration rate are preconditions for more inclusive participation. Second, social media enhance social inclusion by engaging many participants, who may not be able to participate via traditional methods. Third, they facilitate interactions and different levels of citizen power, though the government still plays a leading role within top-down approaches. Finally, they improve the effectiveness of participation regarding transparency, accessibility, and workable solutions. However, there are several potential political and social bias associated with social media technology. The combination of online and offline participation methods is properly necessary to engage different groups in the planning process.
The Impact of the COVID-19 on Economic Sustainability—A Case Study of Fluctuation in Stock Prices for China and South Korea
Authors: Jiang Jialei , Park Eun-Mi , Park Seong-Taek
Published: June 2021

The coronavirus disease (COVID-19) pandemic has had a global impact on lives, livelihoods, and economies. This study investigates whether a contagious infectious disease can affect the prices of the Chinese and Korean stock markets. Specifically, we aim to discover discrepancies in the impact of COVID-19 on the stock prices of China and South Korea through panel data. To test these discrepancies, we first regressed the stock indices on confirmed cases and deaths. We then validated the stability of coefficients over the past days. The empirical results show that (1) responses of stock indices are stable and impulsive and (2) response patterns toward COVID-19 events considerably vary across nations, especially in the counties such as China and South Korea.
Orthohantavirus Survey in Indigenous Lands in a Savannah-Like Biome, Brazil
Authors: Terças-Trettel Ana Cláudia Pereira , de Melo Alba Valéria Gomes , de Oliveira Renata Carvalho , Guterres Alexandro , Fernandes Jorlan , Pereira Liana Stretch , Atanaka Marina , Espinosa Mariano Martinez , Teixeira Bernardo Rodrigues , Bonvicino Cibele Rodrigues , D’Andrea Paulo Sérgio , de Lemos Elba Regina Sampaio
Published: June 2021

In Brazil, the first confirmed cases of hantavirus cardiopulmonary syndrome in Indigenous populations occurred in 2001. The purpose of this study was to determine the seroprevalence of orthohantavirus infections in the Utiariti Indigenous land located in the southeastern region of the Brazilian Amazon. In December 2014 and 2015, a survey was conducted using an enzyme-linked immunosorbent assay in nine villages belonging to the Haliti–Paresí Indigenous communities. A total of 301 participants were enrolled in the study. Of the two study cohorts, the one from 2014 showed a prevalence of 12.4%, whereas the one from 2015 had a serum prevalence of 13.4%. Analysis of the paired samples of 110 Indigenous people who participated in both stages of the study enabled identification of four individuals who had seroconverted during the study period. Identifying the circulation of orthohantaviruses in the Utiariti Indigenous land highlights a serious public health problem in viral expansion and highlights the need to implement preventive measures appropriate to the sociocultural reality of these communities.
Field Scale Demonstration of Fly Ash Amended Bioretention Cells for Stormwater Phosphorus Removal: A Review of 12 Years of Work
Authors: Vogel Jason R. , Chavez Rebecca A. , Kandel Saroj , Brown Glenn O.
Published: June 2021

In 2007, ten bioretention cells were constructed in Oklahoma as part of a full-scale technology project to demonstrate stormwater phosphorus reduction. The filter media used was amended with 5%, Class C fly ash by weight to increase phosphorus and heavy metal retention. In 2014, core samples were collected from four of the cells, and three were instrumented for continuous water monitoring for the following year. This paper will review the design, construction, computer modeling of phosphorus retention, and measured phosphorus removal after seven years of operation. Total phosphorus retained in the sampled cells showed reductions in effluent water concentrations of 68 to 75%, while total effluent mass reductions of 51 to 93% were achieved. Total phosphorus accumulation in the cells measured in cores ranged from 0.33 to 0.60 kg/year, which was somewhat greater than the annual calculated effluent reduction of 0.27 to 0.41 kg/year. While good, phosphorus retention was not as high as computer modeling predicted. Other research on the cells, including hydraulics, heavy metal adsorption, and microbial transport, is summarized. Experimental challenges with phosphorus extraction from samples are also discussed. All experience and results suggest that fly ash amendments are an effective option for phosphorus removal in bioretention cells.
Trend Detection of Wave Parameters along the Italian Seas
Authors: Caloiero Tommaso , Aristodemo Francesco
Published: June 2021

In this paper, trend detection of wave parameters such as significant wave height, energy period, and wave power along the Italian seas was carried out. To this purpose, wave time series in the period 1979–2018 taken from the global atmospheric reanalysis ERA-Interim by European Center for Medium-Range Weather Forecasts (ECMWF) were considered. Choosing a significance level equal to 90%, the use of the Mann–Kendall test allowed estimating ongoing trends on the mean values evaluated at yearly and seasonal scale. Furthermore, the assessment of the magnitude of the increase/decrease of the wave parameters was performed through the Theil–Sen estimator. The obtained results underlined that the mean values of the considered wave parameters were characterized by a high occurrence of positive trends in the different Italian seas. The findings of this study could have implications for studies of coastal flooding, shoreline variations, and port operations, and for the assessment of the performances of Wave Energy Converters.
Peculiarities of Hydrodynamics of Small Surface Water Bodies in Zones of Active Technogenesis (on the Example of the Verkhne-Zyryansk Reservoir, Russia)
Authors: Lyubimova Tatyana , Lepikhin Anatoly , Parshakova Yanina , Bogomolov Andrey , Lyakhin Yury , Tiunov Alexey
Published: June 2021

As a rule, large modern industrial complexes are significant water users. This raises the problem of providing them with reliable and sustainable water supply systems. To solve this problem, relatively small, special reservoirs for technical water supply are often created. When creating them, it is a priori assumed that their water masses will be comparatively homogeneous over the aquatorium and throughout the depths, and so, therefore, that their flushing can be successfully used to prevent a possible accumulation of pollutants. The experience of operating such reservoirs in the Verkhnekamsky potassium and magnesium salt development zone in Ural, Russia, has shown that, due to intense diffuse pollution, the reservoirs are characterized by significant vertical non-uniformity, fundamentally altering the hydrodynamics of these water bodies. Based on a series of research, including field observations and computational experiments, the present paper reveals that the vertical non-uniformity of water masses plays a key role in ensuring the sustainability of technical water supply.
EDITORIAL: Mṛtyuñjaya, the Conqueror of Death, in the year of Covid–19.
Authors: De Michelis Elizabeth , Hargreaves Jacqueline
Published: June 2021

EDITORIAL: Mṛtyuñjaya, the Conqueror of Death, in the year of Covid–19.
Book Review of Selling Yoga (Jain, 2014).
Authors:   Jagiellonian University, Ciołkosz Matylda
Published: June 2021

Selling Yoga: From Counterculture to Pop Culture. Andrea R. Jain. Oxford: Oxford University Press, 2014. 240 pages. Selling Yoga, Andrea Jain’s influential monograph, is not a recent publication in the field of yoga studies. Having first been published six years ago, it has already been receivedby the academic community. Nonetheless, it still deserves thorough discussion,especially in light of expanding academic research on yoga.
Book Review of Biography of a Yogi (Foxen, 2017).
Authors:   SOAS University of London, Clark Matthew
Published: June 2021

Biography of a Yogi: Paramahansa Yogananda and the Origins of Modern Yoga. Anya P. Foxen. New York: Oxford University Press, 2017. 238 pages. First published in 1946, Autobiography of a Yogi by Paramahansa Yogananda has to date sold over four million copies. It is by far Yogananda’s most popular book and has been translated into thirty-three languages. Aside from South Asian religio-philosophical texts, Autobiography of a Yogi is perhaps the most widely read publication on the life of a yogi of all time.
A abordagem do turismo na criação de Unidades de Conservação no Polo Costa das Dunas (RN)
Authors: Dantas Fernanda Raphaela Alves , Sonaglio Kerlei Eniele
Published: June 2021

Compreender o contexto do turismo nas unidades de conservação a partir seus efeitos e do planejamento é necessário para mitigar respostas indesejáveis, sobretudo quando a criação destas áreas é motivada pelo discurso da conservação ambiental aliada ao turismo como solução aos desafios para a sustentabilidade local. Neste entendimento, em abordagem qualitativa, buscou-se analisar qual o propósito e contexto do turismo nas unidades de conservação estaduais em processo de criação no Polo Turístico Costa das Dunas, Rio Grande do Norte (RN), especificamente em dois Parques Estaduais, Parques Estaduais Mangues do Potengi - PEMAP (Natal) e Jiqui – PEJ (Parnamirim). A primeira etapa da pesquisa foi do tipo descritiva, onde realizou-se a análise documental dos processos e atas que tratam da criação dos Parques, bem como, de atas de reuniões do citado Polo. Na segunda etapa empreendeu-se entrevista semiestruturada com o Núcleo de Unidades de Conservação do IDEMA sobre aspectos relacionados ao planejamento do turismo pretendido para as áreas. Constatou-se que os processos de criação dos parques estão estagnados, sendo o PEMAP na dependência de continuidade em estudos técnicos e socioeconômicos e, o PEJ, aguardando a cessão de área incluída nas delimitações da UC. Sobre os atores do turismo do setor público ou privado e das comunidades do entorno, notou-se que o envolvimento é tímido e reticente, o que pode resultar em conflitos socioeconômicos posteriores a criação das UC. Em relação aos debates ocorridos nas reuniões do Polo, percebeu-se a escassez e incipiência do tema em pauta, o que demonstra um distanciamento na perspectiva do planejamento do turismo quanto as novas áreas de potencial atratividade. Dessa forma, acredita-se que discussões e participação dos diferentes atores interessados na criação desses Parques necessitam de mais amplitude e aprofundamento, visando o alcance de um planejamento integrativo mais assertivo e seguro.
A Ilha Canela, Palmas (TO): Uma análise socioeconômica dos visitantes e do ecoturismo
Authors: Coelho Silmar Cardoso Araújo , Camargo César Floriano de
Published: June 2021

A Ilha Canela é situada no município de Palmas (TO). Fruto da formação do lago da Usina Hidrelétrica Luiz Eduardo Magalhães. A ilha possui uma das mais belas praias fluviais do município de Palmas. Cabe destacar que ela foi construída artificialmente. A ilha Canela é que foi objeto de estudo e referência para a análise desse trabalho de pesquisa. Assim o presente trabalho visa traçar o perfil socioeconômico dos visitantes que frequentaram a Ilha Canela durante os meses de janeiro e fevereiro do ano de 2019. As informações foram obtidas através que questionários juntos aos frequentadores. Também analisará o que deve ser caracterizado como ecoturismo e as características do mesmo presente na ilha Canela, sendo que um deles é se o local é apropriado para essa forma de turismo e se as atividades presentes nesse território ajudam a identificar se é típica dessa atividade econômica.
Distribuição geográfica da Educação Ambiental brasileira em espaços não formais de ensino
Authors: Medeiros Adler Santana , Campos Maryluce Albuquerque da Silva
Published: June 2021

esta revisão bibliográfica consiste em revelar informações da distribuição geográfica dos espaços não formais de ensino (ENFE) reportados nos estudos de Educação Ambiental no Brasil. As bases de busca “Web of Science”, “Scielo” e “Google Acadêmico” revelaram um total de 108 ENFE divididos em quatro categorias (unidades de conservação, trilhas, museus e jardins zoobotânicos). A maior parte (78%) concentra-se na região sul e sudeste. Um “vazio” foi visualizado na região norte, no interior da região nordeste e na porção norte do centro-oeste. Foram discutidas propostas de onde empregar esforços no uso destes espaços, baseado no desenvolvimento das atividades educativas encontradas.
Educação Ambiental e resíduos sólidos: uma vivência escolar a partir da metodologia da problematização
Authors: Santos Marinez dos , Silva Maíra Cristina de Oliveira
Published: June 2021

O presente estudo objetivou sensibilizar estudantes de uma escola de Ensino Fundamental I em Coxim/MS sobre os impactos socioambientais da destinação inadequada dos resíduos sólidos, bem como sobre a importância de promover práticas de reuso, redução, reciclagem e coleta seletiva. Para isso, adotou-se a Metodologia da Problematização com o Arco de Maguerez na qual, em cinco etapas e com abordagens pedagógicas diferenciadas, os alunos puderam realizar uma leitura crítica dos dilemas ambientais em que estão inseridos, propor soluções aos problemas observados e transformar a realidade da instituição.
Educação e Ecologia Profunda: reflexões sobre os potenciais pedagógicos da horta escolar
Authors: Schú Aline , Petry Claudia , Dourado Ivan Penteado , Medeiros Janine Fleith de , Martinez Jaime
Published: June 2021

O cultivo da terra pode proporcionar a sensibilização ambiental, o reconhecimento do valor intrínseco da natureza e promover a percepção de que a humanidade é parte da “teia da vida”. Nesse sentido, este estudo, de caráter bibliográfico narrativo, tem como objetivo abordar a horta escolar como ferramenta pedagógica dentro do paradigma da ecologia profunda. A partir da pesquisa realizada sobre o tema, os achados literários encontrados somam um total de 75 artigos publicados, dentre os quais, 63 abordam a horta escolar sob uma perspectiva reducionista e produtivista e somente 12 estudos a relacionam a aspectos mais abrangentes, direcionados à ecologia profunda. São poucas as investigações que mencionam a horta escolar como instrumento metodológico educativo dentro da perspectiva salientada por este estudo.
Reutilizar para combater o hospedeiro intermediário Aedes egypti: desenvolvendo a sensibilidade por meio de oficinas
Authors: Tourinho Isabelly Gatti Rocha , Silva Mauro Márcio Tavares da
Published: June 2021

O estudo apresenta ações do projeto Sustentabilidade: a universidade nas Ilhas - desenvolvido pela Unama -, o qual procura, por meio de oficinas de caráter interdisciplinar, realizar atividades voltadas para estudantes da educação básica da rede púbica de ensino, residentes nas ilhas situadas ao redor da cidade de Belém-PA. O foco da ação é o Aedes aegypti - hospedeiro intermediário da dengue, zika, febre amarela e chikungunya. Como forma de avaliação, foi aplicada uma pergunta antes e após a oficina, com intuito de fazer uma comparação entre os resultados. Por meio de análises qualiquatitativas, foi possível perceber um aumento de informações a respeito do assunto, concluindo que a ação foi de suma importância para a sensibilização dos participantes.
Meditação, Memória e Aprendizagem: Estudos Neurobiológicos
Authors: Ferreira Gomides Lindisley , Dutra Gonçalves Lazzaroni Júlio Henrique , Do Carmo Cupertino Marli , Borges de Moraes Rocha Filho Iram , Sales Nogueira Raphael , Vieira Dias Júnior Sebastião , Motta de Carvalho Virgínia Maria , Brandão Barreto Leonardo , Siqueira-Batista Rodrigo
Published: June 2021

Introdução. O papel da meditação sobre distintos aspectos da neurobiologia humana tem recebido maior atenção da comunidade científica, nos últimos anos. Objetivo. O presente artigo tem por objetivo investigar os impactos da prática meditativa sobre a memória e sobre o processo ensino-aprendizagem. Método. Procedeu-se revisão da literatura com estratégia de busca definida no PubMed e no Scielo, utilizando os descritores da plataforma MeSH e operadores booleanos, com os seguintes termos: “Meditation” AND “Memory” e “Meditation” AND “learning”, em inglês e português. Foram incluídos estudos dirigidos ao papel da meditação nos processos de ensino-aprendizagem e nos aspectos neurobiólogos da memória. Resultados. As informações obtidas foram organizadas em três seções: (1) conceitos básicos para o estudo da memória; (2) mecanismos neurais da memória e da aprendizagem e (3) a prática da meditação, incluindo os efeitos sobre a memória e o processo de ensino-aprendizagem. Conclusão. Os efeitos benéficos da prática meditativa sobre a construção dos processos ensino-aprendizagem, com destaque para o aprimoramento do equilíbrio emocional, da redução do estresse e da ansiedade, foram descritos, além do incremento da capacidade de concentração, fatores que favorecem a consolidação da memória de longo prazo e, assim, auxiliam na construção do aprendizado.
Impulse control of a two-link manipulation robot
Authors: Dolgii Yu.F. , Chupin I.A.
Published: June 2021

A nonlinear problem of controlling the movements of a two-link manipulation robot is considered. The free mechanical system has two first integrals in involution. Methods of classical mechanics are used for analytical integration of the system of nonlinear differential equations. A trajectory connecting the initial and final positions of the two-link manipulation robot in the configuration space is found. Impulse controls at the initial moment of time impart the necessary energy to the robot to enter this trajectory. Impulse controls are also used to damp the speeds of the robot at the end position. In a computer simulation of the proposed procedure for moving the robot, generalized impulse controls are approximated by rectangular impulses.
Numerical algorithm for fractional order population dynamics model with delay
Authors: Gorbova T.V.
Published: June 2021

For a fractional-diffusion equation with nonlinearity in the differentiation operator and with the effect of functional delay, an implicit numerical method is constructed based on the approximation of the fractional derivative and the use of interpolation and extrapolation of discrete history. The source of this problem is a generalized model from population theory. Using a fractional discrete analogue of Gronwall's lemma, the convergence of the method is proved under certain conditions. The resulting system of nonlinear equations using Newton's method is reduced to a sequence of linear systems with tridiagonal matrices. Numerical results are given for a test example with distributed delay and a model example from the theory of population with concentrated constant delay.
Game with a random second player and its application to the problem of optimal fare choice
Authors: Timofeeva G.A. , Zavalishchin D.S.
Published: June 2021

The choice of the optimal strategy for a significant number of applied problems can be formalized as a game theory problem, even in conditions of incomplete information. The article deals with a hierarchical game with a random second player, in which the first player chooses a deterministic solution, and the second player is represented by a set of decision makers. The strategies of the players that ensure the Stackelberg equilibrium are studied. The strategy of the second player is formalized as a probabilistic solution to an optimization problem with an objective function depending on a continuously distributed random parameter. In many cases, the choice of optimal strategies takes place in conditions when there are many decision makers, and each of them chooses a decision based on his (her) criterion. The mathematical formalization of such problems leads to the study of probabilistic solutions to problems with an objective function depending on a random parameter. In particular, probabilistic solutions are used for mathematical describing the passenger's choice of a mode of transport. The problem of optimal fare choice for a new route based on a probabilistic model of passenger preferences is considered. In this formalization, the carrier that sets the fare is treated as the first player; the set of passengers is treated as the second player. The second player's strategy is formalized as a probabilistic solution to an optimization problem with a random objective function. A model example is considered.
Rede de correlações entre características de flor e de fruto do maracujazeiro-azedo
Authors: Formagio Maria Gabriela , Fachi Leandro Rafael , Dezengrini Eveline Maria Brezolin , Krause Dhiego Pereira , Campos Thiago Neto Valerio , Lima Kecy Sena , Krause Willian
Published: June 2021

O objetivo deste trabalho foi construir redes de correlação ponderadas, a fim de descobrir estruturas de correlação e padrões de ligação entre características de flor e fruto do maracujazeiro azedo. O experimento foi conduzido na área experimental da Universidade do Estado de Mato Grosso – UNEMAT, Campus Professor Eugênio Carlos Stieler, Tangará da Serra – MT. O delineamento experimental utilizado foi em blocos casualizado com três repetições e cinco flores por parcela. Foram avaliadas 110 famílias de irmãos completo (FIC) provenientes do programa de melhoramento genético do maracujazeiro azedo da UNEMAT. Avaliaram-se os parâmetros de morfologia e morfometria floral, e características de fruto utilizando a rede de correlação de Pearson e os resultados foram submetidos ao teste “t” de Student. Os resultados da rede de correlação possibilitaram identificar com mais rapidez e facilidade o agrupamento de características e as correlações existente entre características da flor e do fruto de maracujazeiro. Também se observou que as características florais (Comprimento do nectário em relação às anteras, comprimento do nectário em relação ao estigma e comprimento do androginóforo) são os caracteres de maior correlação com características físicas dos frutos (Massa de fruto, peso de polpa e espessura de casca). As flores com estiletes totalmente curvos apresentam melhores resultados no processo de pegamento de frutos.
КОМПОЗИТНЫЕ АНТИБАКТЕРИАЛЬНЫЕ СТРУКТУРЫ НА ОСНОВЕ ГИДРОКСИАПАТИТА И ОКСИДА ЦИНКА
Authors: Мараева Е.В. , Халугарова К. , Мошников В.А.
Published: June 2021

Работа посвящена рассмотрению основных тенденций в области синтеза композитных наноструктур на основе гидроксиапатита и оксида цинка. Отдельное внимание уделяется описанию антибактериальных свойств цинка и его оксида. Анализ литературы проводился с использованием источников, проиндексированных на платформе Web оf Science в течение последних нескольких лет. Приводятся схемы гибридных структур, полученных с помощью ручного гидравлического пресса. Область применения рассматриваемых материалов – медицина, в том числе использование в адресной доставке лекарств и в костной инженерии в качестве биоактивных покрытий, нанесенных на поверхность металлического биоимплантата.
РАЗМЕРНАЯ ЗАВИСИМОСТЬ ТЕПЛОТЫ ПЛАВЛЕНИЯ НАНОЧАСТИЦ СФЕРИЧЕСКОЙ ФОРМЫ НА ГРАНИЦЕ ТВЕРДОЕ-ЖИДКОСТЬ
Authors: Кузамишев А.Г. , Шебзухова М.А. , Бжихатлов К.Ч.
Published: June 2021

С использованием термодинамики двухфазной системы с искривленными границами получена размерная зависимость теплоты плавления твердой наночастицы сферической формы с собственным расплавом. Рассмотрение было проведено при учете размерных зависимостей молярного объема, температуры плавления и межфазного натяжения. По полученным соотношениям были проведены расчеты для сферических наночастиц олова. Из них следует уменьшение теплоты плавления с уменьшением размера наночастиц. Результаты хорошо согласуются с имеющимися в литературе экспериментальными данными.
ФАЗОВЫЕ ПЕРЕХОДЫ В КРИСТАЛЛЫ TlGaSe2
Authors: Матиев А.Х. , Успажиев Р.Т.
Published: June 2021

Показано, что в С-политипе кристаллов TlGaSe2 структурный ФП, происходящий при температуре Т ~ 108 К, сопровождается скачкообразным изменением величины параметра с (∆c ~ 0,004 Å). Для политипа 2C-TlGaSe2 на зависимости c (Т) обнаружен только один отчётливо выраженный максимум при температуре Тс2. Причём при температурах, которые на Т1 ~ 30 К выше и на Т2 ~ 5 К ниже Тс2, выполняется закон Кюри-Вейсса. Отсутствие для образцов 2C-TlGaSe2 в области температур Т = 100-300 К увеличение в четыре раза параметра с элементарной ячейки свидетельствует о том, что, параметром порядка сегнетоэлектрического ФП является спонтанная поляризация.
ДИАГНОСТИКА ТЕПЛОФИЗИЧЕСКИХ СВОЙСТВ МУЛЬТИФЕРРОИКА ФЕРРИТА ВИСМУТА, МОДИФИЦИРОВАННОГО РЕДКОЗЕМЕЛЬНЫМИ ЭЛЕМЕНТАМИ
Authors: Хасбулатов С.В. , Андрюшин К.П. , Омаров З.Х. , Резниченко Л.А.
Published: June 2021

Двухстадийным твердофазным синтезом с последующим спеканием по обычной керамической технологии получены мультиферроики на основе твердых растворов состава BiFeO3/РЗЭ (РЗЭ -La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tu, Yb, Lu) в широком диапазоне концентраций РЗЭ (x) (до х=0,5). Проведены исследования теплофизических свойств полученных керамических образцов. Установлено, что для всех вводимых модификаторов (РЗЭ) и их концентраций в “чистом” BiFeO3 характерны экстремальные зависимости теплофизических характеристик (теплоёмкости, теплопроводности, температуропроводности, коэффициента теплового расширения) в окрестности температуры Нееля, TN. Показано, что на многих зависимостях теплофизических параметров от температуры наблюдаются дополнительные аномалии, связанные с полиморфными превращениями в системах. Сделано заключение о целесообразности использования полученных результатов при разработке материалов и устройств на основе BiFeO3/РЗЭ.
ВЛИЯНИЕ ХАРАКТЕРИСТИК ОТМЫВОЧНЫХ ЖИДКОСТЕЙ НА СТЕПЕНЬ ОЧИСТКИ КРЕМНИЕВЫХ ПЛАСТИН
Authors: Мустафаев Г.А. , Мустафаев А.Г. , Хасанов А.И. , Черкесова Н.В. , Мустафаев А.Г.
Published: June 2021

Технология производства полупроводниковых приборов – это техническая наука, занимающаяся изучением физико-химических основ технологических процессов производства электронных приборов и закономерностей, действующих в процессе изготовления этих изделий. Развитие прикладных наук в области получения чистых и сверхчистых материалов, нанесения покрытий, соединения различных материалов, электрофизических и электрохимических методов обработки способствовали совершенствованию полупроводниковой и плёночной технологии, особенно при производстве микросхем с высокой степенью интеграции. Повышение качеств изделий требует высокой технологической точности и дисциплины производства, своевременного анализа и корректировки технологического процесса, построения оптимального технологического процесса.
СОСТАВ И СТРУКТУРА ПОВЕРХНОСТИ РАЗДЕЛА МОНОКРИСТАЛЛА ХЛОРИДА НАТРИЯ И СВИНЦА
Authors: Дышекова А.Х. , Кармоков А.М. , Хасанов А.И.
Published: June 2021

Исследован состав межфазной границы монокристаллов хлорида натрия с ориентации (100) и (110) со свинцом и влияние структуры поверхности на растекание жидкого свинца. Образцы для исследования готовились путем отрыва затвердевшей капли от поверхности кристалла. Обнаружена анизотропия растекания свинца по поверхности кристалла. Методами электронной микароскопии и рентгеноспектрального анализа определен состав межфазного слоя, который отличается от состава контактируемых фаз.
ANALYSIS OF PARSING AND WEBSCRAPING TOOLS WITHIN THE FRAMEWORK DEVELOPMENT OF ARBITRATION INVESTMENT STRATEGY ON THE MARKET SPORT BETS
Authors:   Master's degree, Financial University under the Government of the Russian Federation, Moscow, Russia, Vildanov T. E. , Ivanov N. S. ,   Master's degree, Financial University under the Government of the Russian Federation, Moscow, Russia
Published: June 2021

This article explores both popular and newly invented tools for extracting data from sites and converting them into a form suitable for analysis. The paper compares the Python libraries, the key criterion of the compared tools is their performance. The results will be grouped by sites, tools used and number of iterations, and then presented in graphical form. The scientific novelty of the research lies in the field of application of data extraction tools: we will receive and transform semistructured data from the websites of bookmakers and betting exchanges. The article also describes new tools that are currently not in great demand in the field of parsing and web scraping. As a result of the study, quantitative metrics were obtained for all the tools used and the libraries that were most suitable for the rapid extraction and processing of information in large quantities were selected.
METHODS OF OPTIMIZATION OF INVESTMENT PORTFOLIO AND ANALYSIS OF ASSTES
Authors:   Graduate Student, Financial university, Moscow, Russia, Sergeev A. V.
Published: June 2021

The article discusses the issues of making up and managing an investment portfolio. The classic methods of compiling an investor's portfolio are considered. Modifications of the classical methods are also considered. The approaches based on correlation analysis are distinguished into a separate group of methods. As a graphical method for analyzing an investment portfolio, aspects of the application of graph theory and network theory are considered. The constructions of copula functions are considered as a group of methods that reveal the nature of the interaction of assets in a portfolio. To determine the characteristics of financial assets, the analysis of methods related to the application of the theory of fuzzy sets was carried out. An approach to the operational management of an investment portfolio using the apparatus of Markov chains is also considered.
Determination Total Creatine Kinase Activity and Creatine Kinase Isoenzymes Activities in Patients with Ulcerative Colitis and Crohn’s Disease under Infliximab Therapy
Authors: Al-timimi Mustafa S. , Al-Issa Yasser A. H. , Alkhalidi Nawal M.
Published: June 2021

Creatine kinase (CK) catalyzes the transfer of a phosphate group from creatine phosphate to adenosinediphosphate, and the CK has three isoenzymes CK-MM, CK-MB and CK-BB. Ulcerative colitis (UC) andCrohn’s disease (CD) they are both conditions characterized by long life inflammation of the gastrointestinalsystem. The Purpose of this study was to determine the total CK activity and CK isoenzymes in patientswith Crohn’s Disease and Ulcerative Colitis under Infliximab therapy. For the UC patients, CD patients andcontrols the CK isoenzyme activities and total CK activity was measured, the three CK isoenzymes separateby suitable ion-exchanger small columns (DEAE-Sephadex A-50 exchanger). The results display Creatinekinase isoenzyme chromatograms of all studied groups (UC, CD patients and controls), with variableactivities of (CK-BB) and (CK-MB) isoenzymes with noted an elevation of (CK-MM) isoenzyme activitiesand significantly elevation total CK activity in serum of patient groups after therapy when compared withbefore therapy patient groups.
A Comparison of Shear Bond Strength Values of Recycled Self-Ligating Ceramic Brackets with a New Ones (An-in Vitro Study)
Authors: Ahmed Zain Alabideen , Al-Khatieeb Mustafa M.
Published: June 2021

Background: The aim of the current study was to assess the effects of different recyclrd procedures on shearbond strength and morphological characteristics of deboned mechanically retaining self-ligating ceramicbrackets’ bases, then compare the results with the new brackets of the same company.Material and Methods: Forty-eight mechanical retentive self-ligating ceramic brackets from Damon®ClearTM company were used, thirty-six of these brackets were bonded to non-etched and slightly dampbuccal tooth surface in order to permit an easy debonding of these brackets by dental tweezer, these debondedbrackets were then allocated into three experimental groups (12 per group): recycled by sandblasting,recycled via an Er, Cr: YSGG laser irradiation, and recycled by flame. After recycled, twelve new brackets(the control) plus the previously thirty six reconditioned brackets were bonded to the forty-eight premolarteeth following standardized bonding procedure.Results: There were highly significant differences in the mean shear bond strength values among all groupsusing analysis of variance F-test; in addition, the mean shear bond strength of new brackets had the highestmean value of 22.90 Mpa, followed by Er,Cr:YSGG laser group 20.29 Mpa, then sandblasted group of 11.42Mpa, while flame group had the lowest mean shear bond strength value of 7.63 Mpa; furthermore, the resultsshowed a significant difference in adhesive remnant index (ARI) among all groups.Conclusion: all recyclrd procedures would result in a clinically acceptable shear bond strength value. TheEr,Cr:YSGG recyclrd procedure can effectively eradicate the adhesive from the bases of ceramic bracketswithout jeopardizing them; thus, this technique can be preferred over other recyclrd procedures.
Embryonic Development of Spinal Cord in White Choeked Bulbul (Pycnonotus leucotis)
Authors: Abed Asmaa Basheer , Abed Aws Basheer
Published: June 2021

The study concerned the embryonic development of spinal cord of white choeked bulbul Pycnonotusleucotis. The spinal cord at the age 40 hour’s incubation from the neural tube and its tissue wall is composedof two layers, the ependymal layer and mantle layer. The spinal cord differentiation is completed at the age7 day’s incubation, its, were we notice that the central canal is clear and cavity lined with neurons and wenote the arrangement of gray matter in the form of the letter H and its inside and it is characterized by dorsaland ventral horns and the gray matter substance and note the formation of dorsal medium spetum and ventralmedium fissure.