bluuebunny/crossref_metadata_2025 huggingface dataset:
Um olhar histórico sobre os percursos legais que antecederam a Base Nacional Comum Curricular
Authors: Juzwiak Victor Ridel , Silva Júnior Astrogildo Fernandes da
Published: April 2022

Este artigo tem como objetivo historicizar as políticas curriculares no Brasil a partir da Constituição Federal de 1988 que fundamentam legalmente a construção da BNCC. Neste sentido, foram analisadas as seguintes legislações e seus contextos de construção: Constituição Federal de 1988; da LDB de 1996; dos PCN; das DCN de 2010; e do PNE (2014-2024). A construção dessas legislações e o processo de elaboração desses documentos ocorrem em meio a intensos debates e discussões. Dessa forma, a BNCC carrega consigo os embates ideológicos, políticos e de interesses que permeiam há anos as políticas públicas educacionais no Brasil.
A construção do currículo escolar ao horizonte da democracia e da justiça curricular
Authors: Araújo Wesley B.
Published: April 2022

Na contracorrente da imposição globalizada de currículos oficiais, este artigo visa apresentar o processo de construção coletiva do currículo do município de Várzea Paulista-SP (2005-2012). Os dados coletados a partir de documentos e entrevistas com os profissionais da educação foram organizados conforme a análise de conteúdo (Bardin, 2016). O recorte analítico incidiu sobre o processo de democratização entre os envolvidos, alicerçado na concepção de democracia de alta intensidade (Santos, 2016) e sobre justiça curricular (Ponce, 2018; Ponce; Araújo, 2019). Concluiu-se que a construção curricular sustentada por um programa de formação profissional que reconheceu e valorizou os saberes em presença, fortaleceu a participação dos sujeitos e constituiu-se num experimentalismo democrático.
Contextos de reforma curricular em Matemática da Educação Média no Paraguai
Authors: Dias Marcelo de Oliveira
Published: April 2022

A última atualização do Programa de Matemática para a Educação Média realizada em 2016 no Paraguai constituiu-se em um documento curricular prescrito, cuja construção apresentou fortes componentes políticos e que vêm sendo alvo de muitos conflitos e tensões nos contextos no país. A abordagem do ciclo de políticas, formulada por Stephen J. Ball e colaboradores vêm sendo frequentemente empregada por pesquisadores de políticas curriculares, entre outros campos, configurando-se em um viés metodológico relevante para compreensão dos processos de homologação e atualização dos documentos a partir dos contextos de produção e influência, bem como seus paradigmas e os constrangimentos ideológicos resultantes do envolvimento de organismos multilaterais. Para atingir esse objetivo, o presente artigo apresenta uma análise do processo recente de reforma do documento prescrito de Matemática no Paraguai, que os resultados suscitaram reflexões sobre os modelos verticalizados, esvaziamentos da área e listas de conteúdos como instrumentos funcionais para gestão e performance.
Gestão democrática na ótica neoliberal: as ouvidorias nas IES
Authors: Jardim Hélen de Oliveira Soares , Voss Dulce Mari da Silva
Published: April 2022

O artigo aborda a atuação das ouvidorias de três IES do Rio Grande do Sul (Brasil). Esse estudo teve como objetivo a problematização da implantação e atuação das ouvidorias e as implicações geradas pela produção de novos sentidos quanto ao princípio de gestão democrática da educação superior. Por meio de uma pesquisa documental, cujos dados foram extraídos dos portais das IES, foi analisada a configuração e o funcionamento do referido órgão em termos do caráter político assumido, as implicações geradas na democratização das decisões tomadas e as demandas que contempla efetivamente. Conclui-se que a implantação e atuação das ouvidorias modificam o sentido de gestão democrática ao efetuar-se no contexto histórico político e social neoliberal, assumindo a conotação de controle social externo, diante da reconfiguração das relações entre as universidades e as comunidades atendidas.
Mapeamento de Sistemas Privados de Ensino-SPE em municípios mato-grossenses,2015-2019
Authors: Adrião Theresa Maria de Freitas , Arruda Cristiane Santana de
Published: April 2022

Este artigo analisa dados relacionados ao mapeamento sobre a adoção de Sistemas Privados de Ensino - SPE do estado de Mato Grosso, para os anos de 2015-2019. Dialoga com pesquisas anteriores sobre o tema, principalmente Adrião et al (2009).  Tem-se como pressuposto as reflexões de (ADRIÃO, 2018), de que a adoção de SPEs é uma forma de privatização do currículo. As informações derivam de pesquisa exploratória realizada em sites governamentais do conjunto dos municípios mato-grossenses. Identifica-se que, no período, 14,18% desses municípios adquiriam SPE para a educação básica em Mato Grosso, com a predominância do Grupo Positivo Ltda e com maior concentração na região intermediária de Sinop.
A bonificação em Minas Gerais e a confluência com as recomendações do Banco Mundial: repercussões no trabalho docente
Authors: Pereira Mariane Gomes , Morais Sérgio Paulo
Published: April 2022

O objetivo deste artigo é apresentar as propostas do Banco Mundial (BM) para a docência, e como Minas Gerais assimilou tais proposições no governo de Aécio Neves (2003-2010). Para atingir tal finalidade, apresentamos uma breve análise de um documento do BM que destaca propostas para a docência. As fontes da pesquisa são constituídas por documento e por teses e dissertações que tratam das repercussões das bonificações no trabalho docente, principalmente do “Prêmio por Produtividade”. Sendo assim, identificamos que Minas Gerais assimilou as propostas do BM de modernização da gestão pública e implementou a bonificação. A base dessa premiação foi o mérito que não ocasionou a melhoria da qualidade da docência, mas, sim, a responsabilização dos agentes da educação.
Fatores de qualidade no ensino superior e o desempenho no trabalho dos docentes universitários
Authors: Masaro Rita Eliana , Paula Alessandro Vinicius de
Published: April 2022

Objetivou-se compreender os fatores da qualidade do ensino superior no campo de atividade do professor universitário. Como aspecto teórico, ressalta-se a gestão da qualidade como inclusão, convivência, relações e vínculo emocional para além dos saberes pedagógicos. Utilizou-se a abordagem quali-quantitativa com o uso da escala Q. Participaram professores e coordenadores de instituições privadas de ensino superior de São Paulo/SP. Identificou-se quatro dimensões que contribuem com a qualidade do ensino universitário: comportamento do professor; desempenho e atualização do professor, conceito do ensino superior e condições de trabalho. O fator que mais contribuiu para a qualidade do desempenho do professor universitário foi o sentimento de prazer do docente no desempenho do seu trabalho.
Por uma Pedagogia Crítica: confluências entre as teorizações de Peter McLaren e o pensamento freireano
Authors: McLaren Peter , Silva Maria Vieira
Published: April 2022

Ao longo de décadas as obras de Peter McLaren têm se constituído em referentes fundamentais para a solidificação da teoria crítica.  No presente ensaio, McLaren apresenta importantes elementos de sua aproximação intelectual com a complexidade dialética e dialógica da obra de Paulo Freire, selada por uma sólida amizade. As narrativas do autor recuperam memórias de encontros com Freire e a importância da teoria freireana para fomentar políticas e práticas educacionais pautadas nas lutas contra-hegemônicas e no enfrentamento das atuais dinâmicas de poder ancoradas em políticas neoliberais e neoconservadoras.
La Pandemia como possibilidad de precarizacion del trabajo y del empleo
Authors: Gómez Tania Aillón
Published: April 2022

Este artículo es resultado de la participación en la mesa redonda: “Trabalho Precário no Contexto da pandemia: Olhares sobre América latina”, organizada por la Universidad Federal de Uberlândia, él valora las tendências del trabajo y el empleo durante la pandemia por Covid-19; bajo el postulado de que un desastre sanitario no es solo natural; sino también resultado de  prácticas humanas dentro de determinadas relaciones sociales. Esto hace que los riesgos por Covid-19 como la exposición al contagio o al desempleo, no sean los mismos para todos. En este sentido, los cambios en el empleo y en el trabajo, durante la pandemia por Covid-19, son resultado de la relación laboral, que, dentro del capitalismo, es una relación mercantil, permeada por desigualdades de clase, de género y étnicas.
Essential Drivers of Payment Gateway Continuance Intention: The Moderating Role of Usage Rate
Authors: Sutarso Yudi
Published: April 2022

This study aims to analyze the effect of functional and economic benefit on the perceived value of payment gateway, elaborate the role of perceived value, subjectiveÂ norm, and behavior control on continuance intention, and identify the moderatingÂ role of usage rate on the relationship. The study employed Partial Least Squares toÂ test the proposed model and corresponding hypotheses. Using the purposive samplingÂ technique, the data collection was from 460 survey samples of Fintech paymentÂ gateway users in Indonesia. Analysis data used Two-step SEM, inner model, andÂ outer model analysis. The findings showed that functional and economic benefitsÂ influence the perceived value of payment gateway. Moreover, perceived value,Â subjective norm, and behavioral control effects continuance intention. This studyÂ shows the importance of the moderating role of usage level on the relationship ofÂ subjective norm and perceived behavior control with continuance intention onÂ payment gateway. This study recommends payment getaway providers to manageÂ customer value, promote sustainable intentions, and consider usage rates toÂ encourage subjective norms and behavioral control. Therefore, this study enables aÂ better understanding of the Theory of Plan Behavior (TPB) and ExpectationÂ Disconfirmation Theory (EDT) in the payment gateway context.
What Determines Foreign Direct Investment in Indonesia?
Authors: Sumiyati Euis Eti
Published: April 2022

This study aims to determine the determinants of foreign direct investment (FDI) in Indonesia's manufacturing sector. This study uses time-series data with 40 data observations starting from the 1st quarter of 2010 to the 4th quarter of 2020. The data analysis method employed in this research was Autoregressive Distributed Lag (ARDL) cointegration approach. The research results were that in the long run, the exchange rate and GDP growth had a positive effect, inflation had a negative effect, and gross fixed capital formation did not affect the FDI inflows in the manufacturing sector. This research implies that the government must be able to create or develop policies related to foreign direct investment to provide benefits for economic development in Indonesia. The government's efforts to control inflation have to be strengthened continuously by maintaining the availability of supply and distribution of goods. Supply continuity and smooth distribution between regions have to be further improved through the utilization of information technology and the strengthening of inter-regional cooperation. Likewise, efforts to increase economic growth have to continue to be improved by providing incentives or facilities to companies at various levels, both those that are export-oriented and those that focus on domestic sales.Â Â
DEVELOPMENT OF AN AUTOMATED CALCULATION SYSTEM FOR DETERMINING THE RATIONAL CROSS-SECTION AND VOLTAGE LEVEL OF 10–35 KV POWER LINES FOR IMPROVING THE ECONOMIC EFFICIENCY OF THE CALCULATED VALUES
Authors:   Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia, Kondrashova Yuliya
Published: April 2022

As shown in general terms by the statistics of emergency shutdowns and limit periods of operation of electric grid elements and electrical equipment, the main objective when connecting prospective industrial and residential complexes is to ensure uninterrupted power supply. To this end, new prospective and power lines for consumers need to be reconstructed or laid. This requires the development and implementation of automated calculation system with improved methodology for selecting cross sections of conductors of 10–35 kV power lines. This also needs to take into account a number of additional economic parameters, including the criterion of minimum discounted costs. This has resulted in new values of economic current density for each subject of the Russian Federation, corresponding to new eco-nomic conditions which differ significantly from those given in PUE. The study performed an analysis of the influence of economic current density on the territorial dispersion of electric power prices, discount rate, dynamics of load growth and prices for repair and maintenance. This confirms dependence on the economic situation in the country. The software product developed as a result enables recalculation of the power line for further reconstruction and mo-dernization. In addition, as mentioned above, values were calculated for all regions of Russia, taking into account highest load time. The use of the automated calculation system will reduce the time needed for calculation when determining the type of line, cross-section and voltage for further forecasting of newly connected facilities as well as existing ones, it will also enable a correct and justified choice with a minimum of initial information.
EXPANDING THE FUNCTIONAL CAPABILITIES OF A THYRISTOR FIELD DAMNING DEVICE FOR INTENSIFICATION OF PROCESS CONTROL
Authors:   South Ural State University, Chelyabinsk, Russia, Prokudin Aleksandr , Korzhov Anton
Published: April 2022

Abstract. The article considers the operation of a commonly known thyristor device for dampening a synchronous generator magnetic field. Improvement in the characteristics of the device and expansion of its functionality with a known control algorithm requires an increase in the number of quenching circuits. The article proposes an algorithm for controlling damping circuits based on the principle of binary coding of the decimal value of the required equivalent re-sistance of the device. The current-voltage characteristics of the device have been determined for two variants of circuits of thyristor field damping devices. An increase in the average value of the voltage at the terminals of the excitation winding and an increase in the quality of synthesizing the required current-voltage characteristic were noted. The article further de-scribes the advantages and disadvantages of the described algorithms and schemes. It has been proven that the transition to a new control algorithm for damping circuits improves the characteristics of the thyristor device for dampening the synchronous generator magnetic field without the need for changes in the power section. However, this requires measures to be taken, in order to improve the reliability of the control system.
FEATURES OF SCALE FORMATION IN HEAT EXCHANGER TUBES
Authors:   Bryansk State Technical University, Bryansk, Russia, Tatarintsev Vyacheslav
Published: April 2022

The paper focuses on the regularities of the process of scale formation and its influence on the efficiency of heat exchanger operation. Typically, the design of heat exchangers incorporates a constant surface reserve factor, in order to take into account the process of scale deposition. This leads to unreasonable increase in the consumption of non-ferrous metal. It is thus advisable that the regularities of the influence on the heat transfer of the thermal resistance of the scale layer as it increases over time be determined. Substantiated quantitative recommendations will enable excessive fuel consumption to be reduced and the efficiency of turbine units to be enhanced. The relevance of this study is the practical necessity of resolving these problems. The paper analyzes and identifies those factors which influence the formation of inorganic deposits in the tubes of turbine condensers. There is a certain inconsistency in the conclusions about the effect of heat load, water velocity and temperature, channel geometry and salt concentration in the coolant on scale deposition. This makes it difficult to predict a decrease in heat transfer during operation. This work establishes a de-pendency in calculating the intensity of scale formation in pipes with a change in the speed, temperature, hardness of heat carriers over a long period of time. It has been experimentally established that the decrease in thermal efficiency slows down due to a decrease in the intensity of scale formation, in the range of tested thermal loads with an increase in coolant speed. With an increase in the length of the pipe, water temperature and its hardness, the average amount of scale deposited on the surface of the wall increases. A quantitive comparison of the relative intensity of scale formation in smooth and rough pipes shows the advantage of profiled pipes of a certain geometry.
The Method of the Equivalent Deposit of Deposited Salt (DESD) to Determine the Contamination of the Insulation of Electric Lines in Areas of Manabita Region
Authors: Jurado Washington Castillo , Fernández Miguel Castro
Published: April 2022

The present work is related to the quantitative determination of the environmental contamination that affects the insulators in the subtransmission electrical networks existing between the cities of Montecristi and Manta. This area is the one with the largest industrial settlement, in addition to the proximity to the sea and other road development activities that contribute to contaminating the insulators of the 69, 138 and 230 kV lines causing interruptions in the supply of electricity to various sectors of the city of Manta. That is, the types of pollution known as industrial pollution, marine pollution, desert pollution and other types of pollution that are generated by industries near the sea converge. The results of this research work ended, being able to determine the levels of contamination by means of the Equivalent Deposit of Deposited Salt (DESD) method after 12 months of monitoring of the control insulators. This method consists of obtaining the level of environmental contamination in milligrams of NaCl, capable of forming a solution whose electrical conductivity is equal to that obtained from the solution composed of the contaminant deposited on the insulator and a volume of low conductivity water used. To remove the contaminant on the insulator surface.
Betriebliche Arbeitsschutzakteure im Umgang mit psychosozialen Belastungen
Authors: Ertel Michael , Schmitt-Howe Britta
Published: April 2022

Dieser Beitrag vergleicht anhand von Sekundäranalysen qualitativen Materials aus Deutschland und Spanien Handlungsorientierungen und Rollenverständnisse relevanter betrieblicher Akteur:innen im Handlungsfeld „Gefährdungsbeurteilung psychosozialer Belastungen“ (GB Psych), dem zentralen Präventionsinstrument des betrieblichen Arbeitsschutzes. Unsere Länderauswahl beruht auf dem Prinzip des größtmöglichen Kontrasts im Ähnlichen: Während in Deutschland Arbeitgeber einen vergleichsweise großen Spielraum bei der Ausgestaltung der GB Psych haben, existiert in der spanischen Region Katalonien mit dem ISTAS21 eine dort weit verbreitete konkrete Vorgehensweise der GB Psych. Mit rekonstruktiven Analyseverfahren der qualitativen Sozialforschung – speziell der Agency- und der Metaphernanalyse – geht der Beitrag der Frage nach, wie die wichtigsten Arbeitsschutzakteur:innen in beiden Ländern angesichts dieser konträren Handlungsstrukturen ihre Rolle im Prozess der GB Psych verstehen und wie sie diese ausfüllen. Dabei wird die aus Bewertungs- und Gestaltungsproblemen sich ergebende besondere Konfliktanfälligkeit des betrieblichen GB-Psych-Prozesses berücksichtigt. Wir konnten zeigen, dass die kontrastierenden Rahmenbedingungen der beiden Länderkontexte den Rollenverständnissen und Handlungsorientierungen zentraler Akteur:innen in diesen Prozessen eine je charakteristische Färbung geben.
Anerkennung und Lehrkräftegesundheit
Authors: Meißner Sebastian
Published: April 2022

Mangelnde soziale Anerkennung gilt als wesentliches Differenzkriterium zur Unterscheidung psychisch beeinträchtigter und gesunder Lehrkräfte. Theoretisch rekurrieren diese Arbeiten auf das in der Forschung zu Belastung, Beanspruchung und Arbeitskräftegesundheit prominent gewordene Effort-Reward-Imbalance-Modell (ERI), das Anerkennung als zentral für das Verständnis des Stress- und Beanspruchungserlebens von Lehrkräften sieht. Das ERI-Modell erweist sich jedoch als unzureichend für die Erforschung des Zusammenhangs von Anerkennung und Lehrkräftegesundheit, da es ein verkürztes Verständnis von Anerkennung als Modus positiven Bestätigungshandelns transportiert, das das Anerkennungsgeschehen unterkomplex beschreibt. Es ist daher nicht geeignet, die Beanspruchungsentstehung bei Lehrkräften zu verstehen. Judith Butlers analytisch geprägtes Verständnis von Anerkennung als Subjektivationsgeschehen bietet demgegenüber vielfältige Anknüpfungspunkte, Anerkennung im Beanspruchungsgeschehen bezogen auf deren soziale Eingebundenheit, Komplexität, Konflikthaftigkeit und Ambivalenz angemessener zu erfassen. Auf Grundlage der theoretischen Überlegungen Butlers werden im Beitrag konkrete Analyseperspektiven und Fragestellungen für eine kritische anerkennungstheoretisch informierte Lehrkräftegesundheitsforschung geboten. Diese ermöglicht es, die Gesundheit von Lehrkräften stärker als bisher als Bedingung und Folge von Anerkennungsprozessen und -ordnungen zu betrachten.
Exploring the relationship between vitamin D and leptin hormones in type 2 diabetes mellitus patients from Kuwait
Authors: Lari Fatmah , Alabduljaleel Taiba , Mojiminiyi Olusegun , Shehab Dia , Al-Temaimi Rabeah Abbas
Published: April 2022

Background

Type 2 diabetes mellitus (T2DM) and obesity are prevalent in Kuwait. Vitamin D (VD) deficiency and leptin resistance are risk factors for both disorders. A correlation between the two risk factors has been suggested albeit inconsistently reported. Our objective was to determine the effect and association of VD and leptin levels and their related common variants with T2DM.

Methods

This case-control study included 203 Kuwaiti T2DM patients and 162 healthy Kuwaiti controls. Leptin and VD levels were measured using enzyme linked immunosorbent assays. Genotyping of LEP rs7799039, LEPR rs1137101, VDR rs2228570 and rs731236 was performed using Taqman genotyping assays.

Results

Leptin levels were higher in T2DM patients than controls, but vitamin D levels did not differ. No correlation was found between the levels of the two hormones. VDR rs731236G associated with T2DM risk (Odds ratio 1.66, p=0.0008). VDR haplotype analysis revealed GG/AA, GA/AA or GG/AG to associate with T2DM risk (p=0.01) and increased risk of diabetic neuropathy (p=0.002). VDR rs2228570GG associated with leptin levels in T2DM (p=0.01). Effect of LEP rs7799039 on leptin (p=0.01) and VD levels (p=0.02) was only evident in healthy controls.

Conclusions

VDR rs731236G is associated with T2DM risk in Kuwait, and a VDR haplotype of a less active, low expressing VDR is associated with T2DM and diabetic neuropathy risk. Common variants in leptin and VD related genes appear to mediate the suggested positive correlation of both hormones however their influence is disrupted in T2DM.
Successful treatment of severe hypertriglyceridemia with icosapent ethyl in a case of congenital generalized lipodystrophy type 4
Authors: Babalola Funmbi , Ng Dominic , Bulic Anica , Curtis Jacqueline
Published: April 2022

Objectives

Congenital generalized lipodystrophy type 4 (CGL4) is a rare autosomal recessive condition with high rates of morbidity and mortality. It is a multisystem condition associated with ventricular tachyarrhythmia, congenital myopathy, hepatitis, and metabolic profile of severe hypertriglyceridemia and insulin resistance. Metreleptin is the first line treatment, however it is unavailable in several countries. Herein, we describe a unique presentation and treatment of CGL4.

Case presentation

A 16-year-old female presented with insulin resistant diabetes, and was later found to have myopathy, hypertriglyceridemia, nonalcoholic fatty liver disease, ventricular arrhythmias, and genetic confirmation of CGL4 due to homozygous change in CAVIN1 gene. She had severe hypertriglyceridemia, frequently >17 mmol/L, requiring several hospital admissions. To better control hypertriglyceridemia, in context of known congenital myopathy, we opted for treatment with icosapent ethyl, an ethyl ester of eicosapentaenoic acid (EPA), which reduces synthesis and enhances clearance of triglycerides. On this treatment, she was able to maintain stable triglyceride levels of 4 mmol/L.

Conclusions

We present the first case report of a patient with CGL4, successfully treated for hypertriglyceridemia, with icosapent ethyl.
Notoginsenoside R1 alleviates spinal cord injury through the miR-301a/KLF7 axis to activate Wnt/β-catenin pathway
Authors: Tang Zhi , Yang Chunhua , He Zhengwen , Deng Zhiyong , Li Xiaoming
Published: April 2022

Spinal cord injury (SCI) is a devastating incident that induces neuronal loss and dysfunction. Notoginsenoside R1 (NGR1) has been reported to exhibit a neuroprotective role after SCI. In this study, the effect and molecular mechanisms of NGR1 in models of SCI were further investigated. Rat adrenal pheochromocytoma cell line (PC-12) were stimulated with lipopolysaccharide (LPS) to establish a cell model of SCI-like condition. The changes of proinflammatory cytokines and associated proteins were analyzed using enzyme linked immunosorbent assay (ELISA) and western blotting. A rat model of SCI was established. Nissl staining were used to observe the morphological characteristics of spinal cord tissues. reverse transcription-quantitative PCR (RT-qPCR) was used to measure the expression of miR-301a andKrüppel-like factor 7 (KLF7). Our results showed that NGR1 alleviated LPS-triggered apoptosis and inflammation in PC-12 cells. MiR-301a was upregulated in LPS-stimulated PC-12 cells and was downregulated by NGR1 treatment. MiR-301a overexpression reversed the effect of NGR1 in LPS-treated PC-12 cells. KLF7 was verified to be targeted by miR-301a. NGR1 activated Wnt/β-catenin signaling in LPS-treated PC-12 cells by inhibiting miR-301a and upregulating KLF7. Moreover, blocking wingless/integrated (Wnt)/β-catenin signaling eliminated the protective effect of NGR1 against SCI in vitro and in vivo. Overall, NGR1 could reduce inflammation and apoptosis and promote functional recovery of SCI rats by activating Wnt/β-catenin pathway.
The challenge for meaningful work for adults with ASD
Authors: Winter Kirk
Published: April 2022

Individuals with autism spectrum disorders (ASD) face many challenges during their lives that range from decoding the public school system, understanding social cues and surviving the challenges inherent in higher education. Perhaps the most significant hurdle for those with ASD to overcome is obtaining meaningful employment upon finishing school. The levels of unemployment and underemployment for those with ASD is scandalously high and despite some efforts being made by a handful of well-meaning employers, too few individuals are given a fair shake in both the hiring process and the workplace once hired. This reality unfortunately leads to far too many talented and innovative individuals with ASD facing working lives of unmitigated frustration and unfulfilled potential.
Classification of Particle Shape Using Two-Dimensional Image Analysis
Authors: Charbonneau Cindy , Bernier Fabrice , Pelletier Roger , Lefebvre Louis-Philippe
Published: April 2022

With the constant evolution of additive manufacturing (AM) processes, there is a need to adapt current characterization methods to better understand metallic powder behavior. Accurate and quantifiable characterization of powder particles is essential for qualification, certification, and quality control of AM manufactured parts. Particle morphology is often stated as an important parameter that affects powder flowability, layer density/uniformity, and—ultimately—part quality. However, work still needs to be accomplished to correlate particle characteristics to their impact on AM processes and manufactured parts. This study presents the sensitivity of various shape descriptors used in two-dimensional image analysis to particle morphologies commonly observed in AM. The objective was to determine which standard descriptors could adequately differentiate powder characteristic features such as elongation, facets, number, and size of satellites. To do so, a library of schematized particles containing various shapes was used and a sequential methodology capable of adequately classifying and quantifying particle shapes was developed. The methodology was then validated on metallographic cross sections of powders. The proposed approach could serve as a guide when selecting the most appropriate shape descriptors to monitor various powder characteristics and also provide a more complete characterization of particle morphologies.
FUNCTIONAL, RHEOLOGICAL AND MICROSTRUCTURAL PROPERTIES OF FREEZE-DRIED YOGHURT POWDER
Authors: BALKIR Pınar
Published: April 2022

In this study, functional, rheological, and microstructural properties of freeze-dried yoghurt powder produced at -49°C and 0.0035 mBar conditions from pre-concentrated non-fat yoghurt were investigated. The sample showed good reconstitutional properties with 204 s, 192 s for wettability and dispersibility respectively and 74% for solubility index. Bulk density value was lower, as 285.71 kg/m3, which may be due to the deformation of casein micelles by freeze drying. The water activity of the yoghurt powder sample was 0.1125, much lower than the critical water activity value. The colour of the original yoghurt, yoghurt powder and reconstituted yoghurt were almost white. Reconstituted yoghurt showed better flow behaviour and consistency when compared to original yoghurt. Loss of soluble dry matter in pre-concentration of original yoghurt may have resulted in high hygroscopic powder. The microscopic imaging of original and reconstituted yoghurt demonstrated homogeneous structures for both, however the latter showed a coarser gel network.
Application of visible light activated thiolated cobalt doped ZnO nanoparticles towards arsenic removal from aqueous systems
Authors:   Department of Water and Environmental Engineering, Nangarhar University, Jalalabad 2600, Afghanistan, Ullah S. , Shams D. F. ,   Department of Environmental Sciences, Abdul Wali Khan University, Mardan 23200, Pakistan, Ur Rehman S. A. ,   Department of Environmental Sciences, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan, Khattak S. A ,   National Centre of Excellence in Geology, University of Peshawar, 25130, Pakistan, Noman M. ,   College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China, Rukh G. ,   Department of Chemistry, Abdul Wali Khan University, Mardan 23200, Pakistan, Bibi H. ,   Department of Soil and Environmental Sciences, The University of Agriculture, Peshawar 25130, Pakistan, Ateeq M. ,   Department of Chemistry, Abdul Wali Khan University, Mardan 23200, Pakistan, Bibi N. ,   Department of Chemistry, Shaheed Benazir Bhutto Women University, Peshawar 25000, Pakistan, Ali L. ,   National Centre of Excellence in Geology, University of Peshawar, 25130, Pakistan, Fazil P. ,   Department of Chemistry, University of Karachi, Karachi 75270, Pakistan
Published: April 2022

Populations at large are exposed towards Arsenic (As) contamination in water worldwide making it unfit for drinking and human consumption. This study was designed to assess As removal efficiency of newly developed thiolated chitosan cobalt-doped zinc oxide (CoZnO) nanoparticles (NP) under visible light spectrum. In this study the Co-ZnO NP of various sizes (40–60 nm) were prepared through the co-precipitation method. Removal of As with Co-ZnO NP was investigated in batch tests experiments alongside determining the optimal dose of NP, kinetic rates, effect of light, pH and ultra-sonication. This was followed by a continuous flow test with Co-ZnO layered on Whatman® grade 42 filter paper. Overall, the Co-ZnO NP effectively treated As i.e. in sunlight (100%), neutral pH (100%), ultra-sonication (100%) and in continuous-flow system (100%). The removal of As was maximum (88%) at NP:As ratio of < 1:5 and minimum (25%) at 1:100. Similarly, darkness (21.4%) and (11.1%) uptake at low and high pH respectively. It was found that Co-ZnO NP can efficiently reduce As to non-toxic state i.e. below the WHO permissible limit of (10 µg/L) in drinking water.
Prilog poznavanju duhovne kulture neolitičkih zajednica istočnog Jadrana
Authors: Horvat Oštrić Kristina
Published: April 2022

U radu je predstavljen keramički nalaz pronađen u drugoj polovici 20. stoljeća u Islamu Grčkom, nedaleko od neolitičkog nalazišta Graduša – Lokve. Riječ je o slučajnom nalazu, danas pohranjenom u Zavičajnom muzeju Benkovac. Prema tehnici ukrašavanja i motivima, nalaz pripada srednjem neolitiku, odnosno danilskoj kulturi. U prilog navedenom vremenskom i kulturnom okviru govore i analogije s jadranskog prostora, na temelju kojih je ovaj predmet moguće pripisati duhovnoj kulturi neolitičkih zajednica istočnog Jadrana.
Početak sezonskog stočarstva u Dalmaciji
Authors: Forenbaher Stašo
Published: April 2022

Mljekarstvo, a osobito proizvodnja fermentiranih mliječnih proizvoda, strategije su uzgoja stoke koje često uključuju sezonska kretanja stada. Nedavno objavljene kemijske analize tragova na posuđu i analiza izotopa kisika na zubima ovikaprida pokazujuda su stočari iz sjevernodalmatinskog priobalja počeli svoja stada ljeti izdizati na planinske pašnjake u drugoj polovici 6. tisućljeća pr. Kr., otprilike u isto vrijeme kada su počeli proizvoditi sir. Rezultate tih istraživanja, provedenih na građi iz nizinskihneolitičkih sela, podupire i nadopunjuje raspoloživa arheološka građa iz nalazišta smještenih visoko na Velebitu. Sezonsko vertikalno kretanje pastira započelo je sredinom 6. tisućljeća pr. Kr., oko pet stoljeća nakon prve pojave zemljoradnje u sjevernojDalmaciji. Promjena strategije gospodarenja stadom vremenski se podudara s drugim promjenama koje upućuju na intenziviranje strategija preživljavanja. Širenje zemljoradnje u Liku možda je izravno povezano s početkom transhumantnog stočarstva.
Stočarstvo i ritual na gradini Vrčevo u brončano i željezno doba
Authors: Grgurić Srzentić Maja
Published: April 2022

U radu su prikazani rezultati zooarheološke analize osteoloških ostataka domaćih i divljih životinja s gradine Vrčevo u Ravnim kotarima. Uzorci su prikupljeni prilikom arheoloških istraživanja 2012. godine, prilikom kojih je definirano više naseobinskihhorizonata koji su potvrđeni nalazima podnica i vatrišta. Nalazi, kao i rezultati prvih radiokarbonskih analiza potvrdili su kontinuitet naselja od srednjega brončanog doba sve do kraja starijega i početka mlađega željeznog doba. Rezultati zooarheološke analize pokazali su da kroz oba razdoblja postoji kontinuitet u uzgoju stoke sitnog zuba (ovca i koza), dok je moguća promjena vidljiva u uzgoju goveda. Čini se da posebno mjesto u brončanodobnoj zajednici zauzima pas uz kojeg se veže ritualna praksa.
Japodski i liburnski antropomorfni privjesci
Authors: Preložnik Andrej
Published: April 2022

Prijedlog nove tipološke sheme japodskih i liburnskih antropomorfnih privjesaka pruža novu perspektivu i nove spoznaje o ovoj zanimljivoj vrsti ukrasa. Osnovnim, najstarijim i ujedno prostorno najraširenijim čini se tip Prozor, s analogijama i s druge strane Jadrana. Daljnji razvoj odvijao se u japodskom i liburnskom području odakle su se pojedini primjerci proširili samo na područje Bele krajine i istočne Dolenjske. Vremenski ih možemo smjestiti između 8. i 6. stoljeća pr. Kr. U Lici su se stariji oblici nosili prišiveni na pojedine dijelove odjevnog predmeta (npr. kape i/ili pojaseve), dok su se mlađi nosili kao prsni privjesci. Liburnjanke su ih vjerojatno nosile (i) kao naušnice. Naravno, nije isključeno da su se pojedini primjerci rabili kao zasebni predmeti, na primjer amajlije, osobito izvan japodskog područja. Iako je riječ o geografski vrlo ograničenoj vrsti ukrasa, samo se ovaj dobro uklapa u shemu privjesaka u obliku potnie theron, koji je u 7. stoljeću u nekoliko oblika bio prisutan na Apeninskom poluotoku.
Bioarchaeological Analysis of Skeletal Remains from Nadin Necropolis
Authors: Loewen Tisa , Nystrom Kenneth , Čelhar Martina
Published: April 2022

This contribution presents the results of the bioarchaeological analysis of human skeletal remains from excavations at the Nadin necropolis, focusing on the reconstruction of population demographics and pathological conditions. This site has represented a methodological challenge for traditional individual-level skeletal analyses because the primary architectural unit in the necropolis, parcela, contain commingled and fragmentary elements with evidence of repeated use, multiple inhumations, and cremations. Therefore, landmark-based methods for the determination of MNI have been applied in the analysis of skeletal remains from the 2013 and 2015 excavations. This allowed a more accurate construction of the demographic profile for the site in combination with estimates from previous reports. The minimum number of individuals for the Nadin necropolis, combined with the previously published MNI from within the space delineated as parcela (“cela”) 1 (n=45), is estimated to be 196. These data also show a higher count of subadult remains (51%, n=99), compared to reports for other Iron Age sites in the region. Based on paleodemographic evaluations of the connections among younger age cohorts in skeletal collections, fertility, and population size, high infant and child mortality suggest population growth.
Istraživanja tumula u Dobropoljcima 1960. godine u svjetlu novijih spoznaja
Authors: Serventi Zrinka , Šućur Jure
Published: April 2022

Godine 1960. Arheološki muzej u Zadru, pod vodstvom Šime Batovića, proveo je u Dobropoljcima arheološka istraživanja gradine Jaruv i osam tumula. S obzirom na to da su istraživanja poznata samo kroz kratki izvještaj, autori ovom prigodom objavljuju preostalu dokumentaciju koja se o tim istraživanjima čuva u muzeju, te na osnovi nje ispravljaju pojedine interpretacije, dok na osnovi novijih spoznaja o ukapanju daju širi kontekst tih nalaza.
La fonte nella fonte L’Italia fiscia nella descrizione Tabula Peutingerana 4. L,idrografia 4.3. I Fumi a settentrione del Padus. Dal Cleusis al Tiliabinte
Authors: Rosada Guido , Bosio Luciano
Published: April 2022

I have to explain the double name which this note appears with. Luciano Bosio left us in January 1997, without having the opportunity to publish the first part of an imposing work on a source he loved and frequented, and on which we had worked together. It was a sort of trilogy of the description of Italy as represented in the Tabula Peutingeriana (Roman Italy in the description of the Tabula Peutingeriana should have the title been); a trilogy formed by a volume on the morphological characters, a second one on the anthropic distribution (settlements of different consistency) and finally a third one on the road network, which should have been the most important in consideration of the purpose of the itinerarium pictum. As a moral inheritance of the commitment started with my master of Topography, I have resumed that work, starting from those morphological aspects that characterise our peninsula the most, in particular, in this case, the hydrography. In this note the Padus’s tributarys and Adige, Brenta, Livenza and Tagliamento will be considered specifically. Following the indications registered in the Tabula, these will be compared with the information which can be gathered from other sources, both literary and archaeological ones.
Ulomak pogrebne mense s lokaliteta Galovac – Crkvina
Authors: Uglešić Ante , Baraka Perica Josipa
Published: April 2022

U radu se obrađuje ulomak pogrebne mense (mensa) pronađen pri arheološkim istraživanjima lokaliteta Galovac – Crkvina kod Zadra. Riječ je o rijetkom primjerku takvog tipa nalaza na našim prostorima čije analogije nalazimo unutar funeralnih primjerasjeverne Afrike. Povezuje se s rimskim poganskim pokopom i najvjerojatnije je sjevernoafrički import iz 3. stoljeća.
Zračna arheologija kao metoda identifikacije formacije krškog kulturnog krajolika
Authors: Glavaš Vedrana , Kulenović Neda , Kulenović Igor
Published: April 2022

Tragovi vidljivosti koji reprezentiraju potpovršinski kontekst, kao što su tragovi u tlu (soil marks) i usjevima (crop marks),  uobičajena su pojava kojom se detektiraju arheološki lokaliteti primjenom metode daljinskih istraživanja – zračne arheologije kroz medij kose zračne fotografije. Različite rasprave i općenito primjena metode zračne arheologije, većinom je ograničena na područja kontinentalne klime koja sadrže obilje kultivirane zemlje i tla. Arheološki lokaliteti u krškom su krajoliku primjenom metoda daljinskih istraživanja vidljivi većinom kao površinske strukture, a ne kao potpovršinski arheološki kontekst koji je reprezentiran ili posredovan tragovima u usjevima ili u tlu. U ovom radu se predstavljaju rezultati zračnog snimanja koje je obuhvatilo planinu Velebit i dio sjevernodalmatinske zaravani i obrovačke zaravni u Hrvatskoj. U tu svrhu provedena je analiza snimljenih kosih zračnih fotografija u svrhu sistematizacije indikatora vidljivosti arheoloških lokaliteta u krajoliku dinarskog krša. Indikatori vidljivosti koji omogućuju otkrivanje arheoloških lokaliteta su međuovisni o krškom reljefu, submediteranskoj klimi i vegetaciji šikara. Utvrđeno je da su arheološki lokaliteti primjenom metode zračne arheologije vidljivi kroz indikatore kao što su sjena, tekstura, boja i vegetacija. Definirani indikatori u krškom kulturnom krajoliku kojima su detektirani arheološki lokaliteti rijetko se pojavljuju samostalno. Arheološki lokaliteti su većinom vidljivi kroz kombinacije više pojedinačnih indikatora.
Effect of Immortal Time Bias Controlled Metformin for Cancer Development in Diabetic Patients
Authors: Seo Hwa Jeong
Published: April 2022

Background: This study aimed to determine the effectiveness of metformin as first line oral hypoglycemic agent in diabetes patients in inhibiting cancer incidence, on the basis of the sample cohort supplied by the National Health Insurance Service, and to ascertain the effects of time-related bias on the results.Methods: A t-test was performed to compare the time taken for cancer development between the compliant and non-compliant metformin users and the non-metformin users. Survival analyses for cancer patients, regarding the period time until cancer incidence, were performed according to metformin use through three models: model 1 adjusted for age and sex; model 2 further adjusted for body mass index, cholesterol, and smoking status;and model 3 further adjusted for hypertension.Results: The odds ratio for cancer development was 1.11 times higher for the non-metformin users (6,997) than for the metformin compliant users (16,132), which was significant at the 0.1 significance level. The age, sex, body mass index, cholesterol, smoking status, and hypertension-adjusted hazard ratio was 0.86.Conclusions: This study has confirmed that metformin is effective in delaying cancer development for patients at risk of cancer rather than in inhibiting cancer incidence itself, by strict application of metformin exposure, with which immortal time biases are controlled. It is therefore necessary to manage compliance with an agent, as well as to prescribe metformin for patients at high risk of cancer, giving consideration to the risk factors for cancer development (old age, being male) instead of focusing on metformin prescription, with the objective of inhibiting cancer development.
The comparative effects of Resveratrol and Curcumin in combination with photodynamic therapy
Authors: Laszló István-Péter , Laszló Mihaela Ramona , Popescu Tiberiu , Toma Vlad , Ion Rodica Mariana , Moldovan Remus , Filip Adriana Gabriela , Cainap Calin , Clichici Simona , Muresan Adriana
Published: April 2022

Background and aim. Photodynamic therapy, PDT, is a promising option among the local treatments with oncolytic potential. Although the basic principle is simple, its intricate mechanisms allow for a broad range of optimization methods. The purpose of this study was to assess the effects of Resveratrol and Curcumin as adjuvants of PDT on experimental tumors.

Methods. Sixty-six Wistar male rats were divided into 11 groups: control, Curcumin (CUR), Resveratrol (RES) alone or followed by irradiation (IR) (CUR+IR and RES+IR, respectively), 5,10,15,20-tetra-sulphonato-phenyl-porphyrin (TSPP), TSPP+IR (PDT), and CUR or RES administered prior to or after PDT (CUR+TSPP+IR, RES+TSPP+IR, TSPP+IR+CUR, TSPP+IR+RES).

Results. Both CUR and RES significantly decreased lipid peroxidation, while RES also showed an increase in glutathione (GSH) levels, especially when it was administered before PDT (p<0.01). Both antioxidants decreased cyclooxygenase (COX)2 expression, to a minimum when they administered prior to PDT (p<0.001 and p<0.01) while nitric oxide synthase (NOS)2 expression diminished in the combined regimen, particularly in RES associated with PDT. CUR and RES induced similar changes in terms of cell death, but CUR seemed to be more efficient on tumor necrosis and showed a higher apoptotic index when was administered after PDT (p<0.001).

Conclusion. Both RES and CUR in association with PDT decreased oxidative stress, diminished the COX2 and NOS2 expressions and increased cell death by positively influencing the necrotic rate and apoptotic index, particularly when CUR was administered after PDT. The results show that CUR is a promising class to study in PDT optimization and further invites to exploit its promises.
Lietuvos gyventojų žinių apie mitybą ir jas lemiančių veiksnių vertinimas informacinės visuomenės kontekste
Authors:   , Žandaras Žymantas
Published: April 2022

Assessment of Lithuanian population’s knowledge about nutrition and its determinants in the context of the information society
Vitamin D Status and its Correlation with Disease Severity among Patients Presented with Major Depressive Disorders in a Tertiary Health Care Hospital in South India
Authors: Ajith Thekkuttuparambil A , John Shiny , Achu S
Published: April 2022

Vitamin D level has a significant inverse correlation with depressive symptoms. The associa- tion of vitamin D level with unipolar or bipolar disorders are inconclusive among Indians. This study was aimed to find the severity of major depressive disorders and their correlation with vitamin D status. A cross-sectional study was conducted among patients (15-65 years old) diagnosed clinically with a major depressive disorder with a known serum 25 (OH) D levels. Mild, moderate, and severe depressive disorders were categorized into groups like vitamin D sufficient (≥75 nmol/L), insufficient (51-74 nmol/L), and deficient (<50 nmol/L). The data were analyzed for correlation. A total of 83 patients (33 males and 50 females) were included. Among the total, only four patients (4.8%) had bipolar disorder, while 79 patients (95.1%) had the unipolar disorder. Three bipolar patients and 68 unipolar patients had 25(OH)D levels below normal. Correlation analysis between the severity of disease and 25(OH)D level found a non-linear negative correlation in males (r= -0.07595, p= 0.7123) and positive correlation in females (r= 0.04234, p= 0.7823). However, correlation of age with 25(OH)D level was positive in males (r= 0.4151, p= 0.035) and negative in females (r= -0.1553, p= 0.3085). A negative correlation was found between the severity of the unipolar disorder and serum 25(OH)D levels in males. Therefore, male patients presented with the unipolar depressive disorder may consider vitamin D supplementation