bluuebunny/crossref_metadata_2025 huggingface dataset:
Adoption of Big Data by Global Chemical Industries
Authors: Khan Ashiff , Seetharaman A , Dasgupta Abhijit
Published: July 2021

The new era of Big Data (BD) is influencing the chemical industries
tremendously, providing several opportunities to reshape the way they
operate and for shifting towards smart manufacturing. Given the
availability of free software, and the large amount of real-time data
generated and stored in process plants why many chemical industries are
still not fully adopting BD? The industry is just starting to realize
the importance of a large amount of data that they own to make the right
decisions and to support their strategies. This article is exploring the
importance of professional competencies and data science that influence
BD in chemical industries for shifting towards smart manufacturing in a
fast and reliable manner. This article utilizes a literature review and
identifies potential applications in the chemical industry to shift from
conventional methods towards a data-driven approach.
ASSESSMENT LITERACY OF PROSPECTIVE TEACHERS IN DISTANCE MODE OF EDUCATION: A CASE STUDY ALLAMA IQBAL OPEN UNIVERSITY ISLAMABAD
Authors: Akhtar Zarina , Hussain Sajjad , Nasir Ahmad
Published: July 2021

Pre-service teacher education carries essential courses to prepare prospective teachers for effective classroom assessment practices. This study analyzes study material on students’ assessment. Further, the assessment literacy of prospective teachers was investigated which require close attention of policy makers and practitioners for authentic assessment in classrooms. A sequential triangulation research design using mix-method approaches have been used in the study. All distance education students studying in B.Ed. and M.Ed. programs at Allama Iqbal Open University, Islamabad make the target population of the study. Through simple random sampling techniques, a sample of 344 prospective teachers and 18 teacher educators was formed the sample group. Results indicate that the study material satisfied the standards as stipulated in the National Professional Standards for Teachers in Pakistan. However, the assessment literacy of prospective teachers was found unsatisfactory. Results revealed that students’ low motivation, low interaction between tutors and prospective teachers, and traditional approaches and beliefs were found to be the areas requiring urgent attention with regard to reforms in assessment. The presentation of study materials was found to be less engaging with no clearly specified road map for implementation in classrooms. Assessment practices by teacher educators included only summative approaches.
The IMPACT OF ACCREDITATION ON THE IMPROVEMENT OF TEACHER EDUCATION PROGRAMS/INSTITUTIONS IN PAKISTAN
Authors: Perveen Uzma , Idris Muhammad Idris , Zaman Amir Zaman
Published: July 2021

The role of the education in the development of any country is very well accepted .In fact it is the only solution to socioeconomic, regional/geographical issues of any nation. Education and its quality are directly related to the quality of instruction by teacher in classroom. In-fact no system of education is better than its teacher. In Pakistan’s case serious and consistent efforts are needed to improve the quality of teachers on the priority bases. Because the qualitative dimension of teacher education programs have resulted in mass production of teachers with shallow understanding of content and methodology.

In Pakistan accreditation system has been introduced to accredit teacher education programs and initiatives are been taking to initiate registration, licensing and certification process of teachers. The accreditation of teacher education programs has been declared mandatory by HEC. All the institutions offering any graduate level teacher education programs are required to get the accreditation of their programs.   The purpose of initiating the accreditation process for Teacher Education was to ensure and improve the quality of teacher education, programs and institutions. Formal accreditation is being has been conducted since 2010-2011. The NACTE has accredited around 450 programs of more than 180 public and private sector teacher education institutions by 2019, which includes colleges and universities offering teacher education all over Pakistan. It was descriptive in nature, which focused on providing an accurate description of the impact of teacher education programs and institutions. This method was preferred as the study primarily sought to describe and understand the stakeholder’s response of the impact of accreditation on institution and program improvement, rather than determining any cause-and-effect relationship. The criteria for sample selection were based on the participation of the concerned faculty, HOD and external evaluators in the accreditation process of the programs offered by the institutions. Five point Likert scale was developed to collect data from the stakeholders HOD, Teacher Educators and External Evaluators. The use of mean, SD provided the basis for calculation, application and interpretation of t-test and ANOVA.

Majority of participants said that accreditation process have high impact on improvement of teacher education programs. It is important question to participants about Program Accreditation whether it helped to improve teacher education program while some participants said that program accreditation sensitized the accountability of staff, administration and students. In conclusion, a number of important implications at both national and institutional levels for more effective accreditation are identified.
Experimental Investigations of a Compression-Ignition Engine Fuelled with Transesterified-Jatropha BiodieselDiesel Blend
Authors: Deshmukh Gopal Kumar , Rehman Ammenur , Gupta Rajesh
Published: July 2021

Jatropha-curcas biodiesel has recently been considered as one of the potential renewable energy sources in Asia. This biodiesel is produced through the transesterification process of the non-edible oil obtained from Jatropha-curcas. The properties of this biodiesel are quite similar to those of diesel fuel. However, high viscosity of pure Jatropha-curcas biodiesel adversely affects engine performance. Hence, the percentage of Jatrophacurcas biodiesel that will not cause any adverse effect on the engine must be determined. In this context, this paper experimentally investigates the performance and exhaust emission characteristics of a direct injection compression ignition engine fuelled with 25%, 50% and 100% volume basis Jatropha-curcas biodiesel with diesel. Results showed that the Jatropha-curcas biodiesel and its blends demonstrated lower values for brake thermal efficiency and exhaust emission levels than diesel, but not for nitrogen oxide levels and brake specific fuel consumption. It was observed that the blend containing 25% Jatropha-curcas biodiesel (BD25) was the best alternative for diesel fuel based on engine emissions and overall performance. Therefore, BD25 could be considered a potential alternative fuel for compression ignition engines.
Productivity Enhancement with Material Handling System Design and Human Factors Analysis – a Case Study
Authors: Waseem Muhammad , Ghani Usman , Habib Tufail , Noor Sahar , Ahmed Tauseef
Published: July 2021

Global competitiveness leads industry to meet the customer needs by short lead time to market and quality products with low prices. Survival in such a market can be accomplished by either adopting latest technologies or improving the existing systems to the best possible level. Acquiring these technologies need heavy investments and consistent demands due to which small and medium industries skip this option and tend to opt for other choice that is: improve the existing system. Material handling activities contributes a significant investment in production cost. Effective handling system reduces total production cost while considering ergonomics issues improves the productivity. This paper presents a conceptual framework with material handling systems design and the effects of human factors to improve productivity by reducing cost and optimizing quality. The framework provides a general methodology for analyzing a manufacturing/production line. Procedure for its implementation is discussed in a hierarchical way and finally the framework is used to analyze the production lines of a petrochemical industry. The analysis results in successful improvement of the process with 15% increase in overall manufacturing cycle efficiency.
Exergy destruction rate minimization in the absorber of a double effect vapor absorption system
Authors: Mushtaq Muhammad , Kamran Muhammad , Yaqoob Haseeb , Jamil Muhammad , Shafiq Muhammad , Rehman Tauseef , Ali Hafiz
Published: July 2021

Despite the wide applications of multi-effect vapor absorption systems, their energy requirement is relatively higher. Also, their exergy analyses found in the literature reveal that the exergy destruction rate at the absorber is quite significant and has the potential for improvement in its energy efficiency. In this work, the exergy destruction rate at the absorber is minimized using the penalty factor method against the optimized generator temperature of the double-effect vapor absorption system by considering absorber, evaporator, and condenser temperatures into consideration. Modeling of the double-effect vapor absorption system was performed using a thermodynamic toolbox in SIMULINK. The present model employed a refrigerant heat exchanger to enhance the system cooling capacity. The liquid-vapor ejector valve at the absorber also improved the mixing of the solution and refrigerant vapor resulting in lower irreversibility of the system. Results show that the coefficient of a performance increase by 2.4% with refrigerant heat exchanger and exergy loss at absorber decrease by 9.4% with ejector. The optimum performance was seen at the condenser and evaporator temperatures of 308.8 K and 278.1 K, respectively with an 8.2% improvement in exergetic efficiency. Finally, it is concluded that the multi-effect absorption system shows better performance by minimizing the irreversibility.
Parameters of liquid cooling thermal management system effect on the Li-ion battery temperature distribution
Authors: Ding Yuzhang , Wei Minxiang , Liu Rui
Published: July 2021

In order to investigated the influence on the liquid cooling system cooling effect by changing the structural parameters, single Li-ion battery heat generation model is conducted, and used in following simulation. Subsequently, sixteen models are designed by orthogonal array, and the results are obtained by extremum difference analysis, which can quantify the influence degree, identify major and minor factors, and find the relatively optimum combination. Finally, different channel entrance lay-out is adopted to investigated. With a series of work, the effective of single battery heat generation model is proved by the discharge experiment. The coolant velocity has most evident influence on the Li-ion battery temperature rise, rectangular channel aspect ratio is second one, and the heat conducting plate thickness has the smallest influence. Similarly, for Li-ion battery temperature difference, the effect of heat conducting plate thickness and rectangular channel aspect ratio as the same, both are secondary factor, and coolant velocity is main factor. With different channel entrance lay-out, both the maximum temperatures denote a same upward trend, and better balance temperature distribution is obtained by adopt Case C system which with alternating arrange channel entrance lay-out.
Resilience as a moderator in the relationship between burnout and subjective well-being among medical workers in Serbia during the COVID-19 pandemic
Authors: Safiye Teodora , Vukcevic Branimir , Cabarkapa Milanko
Published: July 2021

Background/Aim. During the ongoing COVID-19 pandemic, exhaustion and difficulties at work can seriously endanger the mental health of medical workers. The aim of this study was to examine whether resilience is a moderator of the association between burnout and subjective well-being among medical workers at the time of the pandemic. Methods. The research was conducted on a sample of 521 medical workers (354 female), among whom were 245 physicians and 276 medical technicians. The average age of the respondents was 38.66 years. Data were collected using online questionnaires comprising the Brief Resilience Scale, the Work Burnout Scale, the Short Subjective Well-being Scale, and the Sociodemographic Data Questionnaire. Regression and interaction analysis (by SPSS macro ''PRO-CESS 3.5'') was used for data analysis and processing. Results. The results showed that burnout was a significant negative predictor of subjective well-being of medical workers (? = -0.19; p < 0.01) and a significant positive predictor of subjective well-being (? = 0.40; p < 0.01), as well as that the interaction of resilience and burnout was a significant positive predictor of subjective well-being (? = 0.09; p < 0.01). In subjects who had developed resilience at the level of +1 standard deviation (SD), the negative effect of burn-out on subjective well-being was 2.8 times lower than in subjects who had resilience at the level of -1 SD. Conclusion. The study confirmed that resilience reduces the negative connection between burnout and subjective well-being, which is a significant argument that medical workers should be provided with resilience training programs to prevent burnout and preserve mental health during a pandemic.
Profile of Podocyte Translatome During Development of Type 2 and Type 1 Diabetic Nephropathy Using Podocyte-Specific TRAP mRNA RNA-seq
Authors: Wang Yinqiu , Niu Aolei , Pan Yu , Cao Shirong , Terker Andrew S. , Wang Suwan , Fan Xiaofeng , Toth Cynthia L. , Ramirez Solano Marisol A. , Michell Danielle L. , Contreras Danielle , Allen Ryan M. , Zhu Wanying , Sheng Quanhu , Fogo Agnes B. , Vickers Kasey C. , Zhang Ming-Zhi , Harris Raymond C.
Published: July 2021

Podocyte injury is important in development of diabetic nephropathy (DN). Although several studies have reported single-cell-based RNA sequencing (RNA-seq) of podocytes in type 1 DN (T1DN), the podocyte translating mRNA profile in type 2 DN (T2DN) has not previously been compared with that of T1DN. We analyzed the podocyte translatome in T2DN in podocin-Cre; Rosa26fsTRAP; eNOS−/−; db/db mice and compared it with that of streptozotocin-induced T1DN in podocin-Cre; Rosa26fsTRAP; eNOS−/− mice using translating ribosome affinity purification (TRAP) and RNA-seq. More than 125 genes were highly enriched in the podocyte ribosome. More podocyte TRAP genes were differentially expressed in T2DN than in T1DN. TGF-β signaling pathway genes were upregulated, while MAPK pathway genes were downregulated only in T2DN, while ATP binding and cAMP-mediated signaling genes were downregulated only in T1DN. Genes regulating actin filament organization and apoptosis increased, while genes regulating VEGFR signaling and glomerular basement membrane components decreased in both type 1 and type 2 diabetic podocytes. A number of diabetes-induced genes not previously linked to podocyte injury were confirmed in both mouse and human DN. On the basis of differences and similarities in the podocyte translatome in T2DN and T1DN, investigators can identify factors underlying the pathophysiology of DN and novel therapeutic targets to treat diabetes-induced podocyte injury.
Modification of the Association Between Severe Hypoglycemia and Ischemic Heart Disease by Surrogates of Vascular Damage Severity in Type 1 Diabetes During ∼30 Years of Follow-up in the DCCT/EDIC Study
Authors: Fahrmann Elke R. , Adkins Laura , Driscoll Henry K.
Published: July 2021

OBJECTIVE

Literature suggests that severe hypoglycemia (SH) may be linked to cardiovascular events only in older individuals with high cardiovascular risk score (CV-score). Whether a potential relationship between any-SH and cardiovascular disease exists and whether it is conditional on vascular damage severity in a young cohort with type 1 diabetes (T1D) without apparent macrovascular and no or mild-to-moderate microvascular complications at baseline is unknown.

RESEARCH DESIGN AND METHODS

We evaluated data of 1,441 Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complications study volunteers (diabetes duration 1–15 years) followed for ∼30 years. Time-dependent associations between any-SH and ischemic heart disease (IHD: death, silent/nonfatal myocardial infarct, revascularization, or confirmed angina) and associations between interactions of any-SH with surrogates of baseline micro-/macrovascular damage severity and IHD were analyzed. Diabetes duration, steps on DCCT Early Treatment Diabetic Retinopathy Study severity scale (DCCT-ETDRS), Diabetes Complications Severity Index (DCSI), and CV-scores were considered as surrogates of baseline micro-/macrovascular damage severity.

RESULTS

Without interactions, in the minimally adjusted model controlling for confounding bias by age and HbA1c, SH was a significant IHD factor (P = 0.003). SH remained a significant factor for IHD in fully adjusted models (P < 0.05). In models with interactions, interactions between SH and surrogates of microvascular complications severity, but not between SH and CV-score, were significant. Hazard ratios for IHD based on SH increased 1.19-fold, 1.32-fold, and 2.21-fold for each additional year of diabetes duration, DCCT-ETDRS unit, and DCSI unit, respectively. At time of IHD event, ∼15% of 110 participants with SH had high CV-scores.

CONCLUSIONS

In a young cohort with T1D with no baseline macrovascular complications, surrogates of baseline microvascular damage severity impact the effect of SH on IHD. Older age with high CV-score per se is not mandatory for an association of SH with IHD. However, the association is multifactorial.
Comparison of QCW pulsed laser and single-mode CW laser on the welding of power cell lugs
Authors: Cheng Jian , Zhang Xingpeng , Zhang Peng , Huang Yi , Lou Deyuan , Yang Qibiao , Liu Dun
Published: July 2021

Aluminum alloy is the main material of pole ear plate and bus bar of power cells for new energy electric vehicles. In this paper, quasi-continuous wave (QCW) pulsed laser and single-mode continuous wave (CW) laser were used to conduct laser lap welding experiments on a 0.5 mm thick 1060 aluminum alloy and 2 mm thick 6061 aluminum alloy. The effects of these two laser sources on weld zone morphology and tensile force were compared. The experimental results show that the QCW pulsed laser welding is more likely to have porosity cracks and other defects, while the overall weld performance of the single-mode CW laser welding is obviously better than the former. In addition, the maximum tensile strength of the weld joint in QCW welding is about 861.02 N, while it can reach 1521.36 N in CW welding. The tensile force with CW laser welding is much higher than that required by the power battery industry standard, i.e., the tensile force of 800 N.
Holdautók és marsjárók : I. rész
Authors: Both Előd
Published: July 2021

Fél évszázada, 1971 nyarán használták az első, ember vezette járművet a Hold felszínén. A következő évben további két, ugyanolyan jármű is érkezett a Holdra. Az elmúlt időszakban több robotjármű is eljutott és feladatot hajtott végre a Holdon, és a közelmúltban már a Marson is megkezdődött a kutatótevékenység. A félévszázados évforduló alkalmából felidézzük az idegen égitestekre eddig eljutott járművek történetét, és magyar vonatkozása okán – a Lunar Roving Vehicle (LRV) kerekének különleges technikai megoldása Pavlics Ferenc magyar származású gépészmérnök szabadalma alapján készült – kitérünk az Apollo-­programban használt holdjáróra is. E tanulmánynak azonban nem témája a két égitest körül keringő robotszondák, illetve a helyváltoztatásra képtelen leszállóegységek tevékenységének áttekintése.
Mente, Cérebro e Educação, entrevista a Castro Caldas
Authors:   Universidade Católica Portuguesa, Lisboa, Portugal, Rato Joana
Published: July 2021

Entrevista conduzida pela investigadora Joana Rato ao Professor Doutor Alexandre Castro Caldas. Ambos pertencem ao Centro de Investigação Interdisciplinar em Saúde da Universidade Católica Portuguesa e desenvolvem o grupo de trabalho em Mente, Cérebro e Educação, seguindo as diretrizes da International Mind, Brain and Education Society (IMBES). Com várias publicações em conjunto e o mesmo interesse na disseminação de ciência em contextos escolares, fazem um balanço dos tópicos quentes dentro desta área de investigação que faz ligação entre as neurociências e a educação.
Classificação de ângulos através de uma estória em aulas de apoio a alunos com dificuldade de aprendizagem
Authors: Dos Santos José Manuel Dos Santos , Gomes Mariana
Published: July 2021

Este trabalho surge no decorrer da intervenção-ação da qual ocorre uma análise das dificuldades sentidas pelos estudantes, do 5º ano, no contexto do apoio curricular em matemática. Durante este processo foi desenvolvida uma pesquisa, de caráter qualitativo, onde se desenvolve ums experiência de ensino com base uma trajectória hipotética de aprendizagem previamente definida pela professora-investigadora e discutida com o investigador envolvido na intervenção. O professor encarregue da monitorização do apoio curricular dos estudantes, enquanto professor-investigador, formula uma ou mais hipóteses para guiar o percurso dos seus estudantes, delineando um plano de intervenção, sendo analisado e discutido na análise ongoing orientadora da investigação. O software GeoGebra surge como um dos mediadores da aprendizagem, estimulando o desenvolvimento da comunicação, do pensamento geométrico e o raciocínio matemático dos estudantes participantes do estudo. A descrição da intervenção, bem como os resultados do estudo são apresentados nas considerações finais.
Using GeoGebra in generalization processes of geometrical challenging problems
Authors: Nós Rudimar Luiz , Sano Mari , Lago Rodrigo Cesar
Published: July 2021

Neste trabalho, generalizamos três problemas geométricos desafiadores presentes na literatura matemática. Nas generalizações, adotamos os pressupostos teóricos estabelecidos para esse processo e empregamos o GeoGebra para construir figuras e animações. As generalizações propostas  e solucionadas estabelecem conexões naturais entre algumas áreas da matemática, destacando a importância dos processos de generalização à construção do conhecimento matemático em cursos de graduação que preparam professores de matemática. Concluímos que o emprego do GeoGebra foi essencial à compreensão abrangente das estruturas para a generalização.
O software GeoGebra como aporte para o Ensino de Matemática e aplicação em sequências numéricas
Authors: Oliveira Rannyelle Rodrigues de , Oliveira João Luzeilton de , Paiva Rui Eduardo Brasileiro , Lima Antônia Emanuela Oliveira de
Published: July 2021

Neste trabalho, discutimos o uso das tecnologias em sala de aula como um elemento facilitador, que permite redimensionar o cenário educacional, a fim de se realizar situações de ensino que possibilitem uma aprendizagem eficaz. Para tanto, foi utilizado como aporte teórico autores que discutem metodologias ativas, propostas metodológicas, pelas quais os professores buscam sugerir atividades que oportunizem aos alunos participarem ativamente do processo de ensino e aprendizagem. Apresentou-se o GeoGebra como um exemplo dessas metodologias. Tendo em vista que o software permite explorar conceitos matemáticos geométricos e algébricos, são discutidos dois problemas sobre sequências oriundas de relações de recorrência, oportunizando a verificação de conjecturas associadas às relações. A pesquisa se caracterizou como qualitativa, do tipo bibliográfica, e objetiva, um estudo exploratório. Conclui-se que o software GeoGebra,como uma ferramenta para o Ensino de Matemática, pode ser usado com a finalidade de proporcionar a mobilização do pensamento intuitivo do estudante em direção ao raciocínio inferencial/generalizador.
Realizando uma atividade lúdica/matemática com o uso do GeoGebra discutida à luz da Teoria da Atividade
Authors: Silva Maria Deusa Ferreira da , Rocha Robério Pereira
Published: July 2021

O presente artigo é uma introdução a uma pesquisa de mestrado sobre os pressupostos teórico-metodológicos, em fase de construção, sendo desenvolvida junto ao Programa de Pós-Graduação em Ensino da Universidade Estadual do Sudoeste da Bahia (PPGEn-UESB). Trazemos a discussão de uma atividade matemática: a construção de uma das figuras que podem ser formadas com as peças do Tangram, usando as opções de isometria no plano do GeoGebra. Inicialmente, faremos uma abordagem a respeito da Teoria da Atividade de Engeström (TA). A seguir, realizaremos uma breve exploração do GeoGebra, usando opções de isometrias no plano. Depois, construiremos a figura e a analisaremos, com base numa discussão à luz da TA, observando o grau de dificuldade envolvido nesse processo, bem como discutiremos o pensamento matemático envolvido nessa forma de construção não usual. Nas considerações finais, abordaremos como a TA permeará a perspectiva teórico-metodológica da pesquisa em construção.
Construindo o laço do planeta marte em relação às estrelas distantes no sistema copernicano
Authors: Menezes Luana Paula Goulart de , Pereira Vitor Marques
Published: July 2021

O presente trabalho visa apresentar uma proposta de construção aproximada do movimento de Marte, que gera para um observador na Terra um formato de laço em relação às estrelas distantes na perspectiva do sistema copernicano. Para tal, utilizaremos o conhecido software GeoGebra. Crescendo consideravelmente, o software está sempre sendo atualizado e chega a reunir fóruns e grupos, contando em sua plataforma com uma gigantesca variedade de atividades para a matemática e a ciência. Dentre as muitas possibilidades, o modelo que escolhemos nos gerará um cenário para se pensar sobre a história das ideias envolvidas. Acreditamos que por intermédio de trabalhos deste tipo é possível promover uma discussão mais ampla e interdisciplinar sobre os conceitos que utilizamos, indo além dos brevíssimos recortes apresentados em livros didáticos. The present work aims to present a proposal for an approximate construction of the Mars movement, which generates for an observer on Earth a loop shape in relation to distant stars in the perspective of the Copernican system. For this, we will use the well-known GeoGebra software. Growing considerably, the software is always being updated and comes to gather forums and groups, counting on its platform a huge variety of activities for mathematics and science. Among the many possibilities, the model we choose will provide us with a scenario to think about the history of the ideas involved. We believe that through works of this type it is possible to promote a broader and interdisciplinary discussion on the concepts we use, going beyond the very brief cutouts presented in textbooks.
Biosorbent Prepared from Calotropis Gigantean Stems for Adsorption of Cu(II) Ions from Aqueous Solution
Authors: Husna Asmaul , Abdullah Faisal , Muslim Abrar , Suhendrayatna Suhendrayatna , Meilina Hesti
Published: July 2021

Calotropis gigantea stems (CGS) has the potential to use as biosorbent for adsorption of Cu(II) ions. In this study, the CGS biosorbent (CGSB) was prepared by drying and grounding. The effect of independent variables on adsorption capacity were investigated. As the result, the maximum adsorption capacity of 53.457 mg/g was obtained the optimal condition which was initial Cu(II) ions concentration of 567.47 mg/L, CGSB size of less than 230 mesh, CGSB mass of 1 g, temperature of 27 oC, pH 5, and contact time of 60 min. The CGSB surface morphology was analysed using SEM. The adsorption of Cu(II) ions fitted well with pseudo first-order adsorption kinetic (PFO-AK) model (R2=0.99), and the PFO-AK adsorption capacity and rate constant obtained were 70.194 mg/g and 0.0877 g/mg.min, respectively. The adsorption isotherm of Cu(II) ions was in accordance with Freundlich model (R2=0.99), and the intensity and volume constants attained were 0.876 and 1.017 L/mg, respectively. This result showed that physical adsorption occurred dominantly than chemical adsorption. The application of CGSB on the wastewater of initial Cu(II) ions concentration of 389.31 mg/L from ex-mine pool of acid mine drainage (AMD) in Jantang village, Lhoong District, Aceh Besar, Aceh Province resulted in adsorption capacity of 37.52 mg/g with adsorption efficiency of 66.13%.
Application of Mn-Fe Layered Double Hydroxide as an Adsorbent for the Removal of Arsenic from Synthetic Acid Mine Drainage
Authors: Irawan Chairul - , Sari Ayu Ratma , Yulianingtias Aproditha , Melinda Rizani Aulia , Mirwan Agus
Published: July 2021

The Mn-Fe layered double hydroxide using chloride in the interlayer anion was successfully synthesized using chemical co-precipitation methods. The Mn-Fe LDH was then applied as adsorbent for arsenic removal from synthetic acid mine drainage. The adsorbent characterizations of SEM and XRD analysis showed that the Mn-Fe LDH had many different functional groups and a high specific surface area for the adsorption processes. The morphological structure of Mn-Fe LDH by the SEM-EDS analysis method shows a round shape structure with a particle size of about 1 μm, and the XRF analysis method shows that the Mn and Fe elements dominate more than other components. Batch adsorption experimental conducted using the Mn-Fe LDH with the interlayer anion of chloride as an adsorbent to study the effect of contact time, equilibrium pH, and temperature on the arsenic removal. The Mn-Fe LDH showed high adsorption uptake capacity and selectivity for the arsenic in the synthetic acid mine drainage. The adsorption and ion exchange between interlayer chloride anions in Mn-Fe LDH and As (V) solution was the main adsorption mechanism. Therefore, the Mn-Fe LDH can be used as an adsorbent in water and wastewater treatment. In contrast, this research has the potential to be processed and developed into advanced materials.
Preparation and Characterization of Interfacially Polymerized Polyamide Membrane for Dye Removal
Authors: Himma Nurul Faiqotul , Ismuyanto Bambang , Hidayati AS , Juliananda Juliananda , Rohmawati Hidayatul , Budiarta Irfan
Published: July 2021

Interfacial polymerization of polyamide was conducted using hydrophobic and hydrophilic membrane support. The effects of monomer concentration were investigated, and the resulting thin-film composite membranes were tested for their performance in dye removal using different flow configurations. The results showed that a dense polyamide layer was successfully formed on the hydrophilic support, while a polyamide layer with a very loose structure was formed on the hydrophobic support. The polyamide layer became smoother and more hydrophilic as the concentration of trimesoyl chloride was increased, leading to increased permeate flux and reduced dye rejection. The highest sunset yellow rejection of 45.7% with a permeate flux of 4.9 L/m2.h was obtained when the polyamide layer was formed from trimesoyl chloride concentration of 0.05 w/v% (a high amine to acid chloride monomer ratio of 20) and the filtration was in cross-flow configuration.
Noise Pollution in Urban Residential Environments: Evidence from Students’ Hostels in Awka, Nigeria
Authors:   University of Nigeria, Department of Architecture, Enugu Campus, Enugu State, NIGERIA, OBI Nicholas , OBI Joy Sylvia ,   Nnamdi Azikiwe University, Faculty of Education, Awka, Anambra State, NIGERIA, IBEM Eziyi ,   University of Nigeria, Department of Architecture, Enugu Campus, Enugu State, NIGERIA, NWALUSI Dickson ,   University of Nigeria, Department of Architecture, Enugu Campus, Enugu State, NIGERIA, OKEKE Ogochukwu Francis ,   University of Nigeria, Department of Architecture, Enugu Campus, Enugu State, NIGERIA
Published: July 2021

Noise pollution and its concomitant effects on humans and environment has reached dangerous levels in many urban areas across the world. However, very little is known about the sources and effects of noise pollution within students’ hostels in a developing country like Nigeria. This study investigated urban noise pollution in residential neighbourhoods, using the Nnamdi Azikiwe University students’ off-campus accommodation in Awka, southeast Nigeria as the study area. Data were obtained through measurements of noise levels using sound level meter and by conducting a survey to gather feedback from 260 students in the study area. Descriptive statistics and Chi-Square tests were used to analyse the data; the results revealed mean noise levels of 89.8 dB(A) and 46.9 dB(A) during noisy and quiet periods, respectively. The main sources of noise were portable electricity generators, vehicular traffic and loudspeakers used by students and business operators; they were found to have deleterious effects such as low tolerance, headache, anger, lack of concentration and low productivity on the students. The study concludes by noting that to effectively minimize the effects of noise pollution within urban residential neighbourhoods in the study area and beyond, architects and urban planners should engage in proper land use zoning and the application of sound absorbing materials on walls and locating balconies of residential buildings away from noise sources. In addition, vegetation belts and sound barriers of earth mounds or wood, metal or concrete could also be constructed between the sources of noise and residential buildings, especially in the case of roadside communities.
Constructing Unrooted Phylogenetic Trees with Reinforcement Learning
Authors: Liptak P. , Kiss A.
Published: July 2021

With the development of sequencing technologies, more and more amounts of sequence data are available. This poses additional challenges, such as processing them is usually a complex and time-consuming computational task. During the construction of phylogenetic trees, the relationship between the sequences is examined, and an attempt is made to represent the evolutionary relationship. There are several algorithms for this problem, but with the development of computer science, the question arises as to whether new technologies can be exploited in these areas of computational biology.

In the following publication, we investigate whether the reinforced learning model of machine learning can generate accurate phylogenetic trees based on the distance matrix.
Habitar el espacio público: narrativas de la violencia en el barrio de Tepito
Authors:   , Moreno Sánchez Linda Mercedes
Published: July 2021

En la actualidad, el debate en torno a la crisis del espacio público pone de manifiesto cómo la violencia urbana socava la condición de apertura y convivencia que idealmente caracteriza a este ámbito. Así, se ha llegado a considerar la posibilidad de la muerte o decadencia de los espacios públicos ante el vaciamiento de calles, parques, patios o por el grado de acorazamiento al que han incurrido los habitantes de distintas partes de la ciudad para protegerse del peligro que constituye lo externo o el contacto con el otro. Además, la prevalencia de imaginarios o percepciones sobre ciertos lugares identificados como peligrosos o inseguros han mermado las posibilidades de habitarlos o apropiarlos por parte de la población no residente, contraviniendo, de esa manera, la apertura de la ciudad en su totalidad. No obstante, en la Ciudad de México, la existencia de territorios como el barrio de Tepito, históricamente estigmatizado por la violencia que permea en este territorio, pone en entredicho esta premisa al mostrar que, si bien la violencia influye en su uso y apropiación, sus espacios públicos son usados intensamente y gozan de gran vitalidad. Por lo anterior, la presente investigación tiene como propósito comprender de qué forma la violencia existente en el barrio, determina la manera en la que sus habitantes –comerciantes y/o residentes- habitan su espacio público. En ese tenor, se realizó una investigación documental sobre los acontecimientos que han sido claves para comprender los cambios en la forma de habitar el espacio público en Tepito; posteriormente se llevó a cabo una discusión teórica sobre el habitar y la violencia urbana, la cual dio paso al trabajo de campo que contempló una metodología de corte cualitativo con entrevistas abiertas para abordar el tema de la violencia en el barrio y su impacto en el espacio público. Asimismo, se hicieron recorridos de campo de manera individual y en compañía de algunos entrevistados y observaciones sistemáticas por las primeras cinco cuadras de la calle de Tenochtitlán, lugar en donde situamos la investigación.
Produção Stricto Sensu na enfermagem brasileira sobre tuberculose: estudo bibliométrico
Authors: Rodrigues Lívia Monteiro , Rocha Cavalcante Edilma Gomes , Rodrigues Maia Evanira , Socorro Vieira Lopes Maria do , Santos Moreira Felice Teles Lira dos , Albuquerque Grayce Alencar
Published: July 2021

Objetivou-se caracterizar a produção brasileira sobre tuberculose nos programas Stricto Sensu em enfermagem no Brasil. Estudo documental, bibliométrico, descritivo com abordagem quantitativa e qualitativa, realizado no banco de teses e dissertações da CAPES. Constatou-se predomínio de dissertações, com produção no ano de 2016, na região Sudeste, prevalecendo estudos descritivos, com abordagem qualitativa que realizaram análise a partir de dados secundários, destacando a vigilância em saúde e avaliação de programas e serviços de saúde como tendências temáticas. A Classificação Hierárquica Descendente dividiu o corpus textual em cinco classes, que evidenciaram aspectos epidemiológicos, cuidados de enfermagem, fragilidade das políticas públicas, relação tuberculose com determinantes sociais e importância dos sistemas de informação na assistência, indicando relação com as temáticas prevalentes. A representatividade temática nas pesquisas sobre tuberculose, demonstra coerência em relação às propostas do Plano Nacional de Controle da Tuberculose, bem como apresenta lacunas que podem ser melhor exploradas no contexto da enfermagem.
Fadiga em idosos submetidos ao tratamento hemodialítico
Authors: Pires Barra Isabel , Góes Salvetti Marina de , Santos Pennafort Viviane Peixoto dos , Araújo de Brito Francisca Íris , Guimarães Oliveira Soares Maria Júlia , Oliveira de Mendonça Ana Elza
Published: July 2021

Identificar a ocorrência de fadiga em idosos com doença renal crônica em hemodiálise. Estudo descritivo, transversal e abordagem quantitativa, realizado de setembro a novembro de 2018 por meio da Escala de Fadiga de Piper-revisada. Participaram do estudo 45 idosos com idades entre 60 a 86 anos, 62,2% eram do sexo masculino. Identificou-se fadiga em 97,7% dos idosos e as causas atribuídas com maior frequência foram às sessões de hemodiálise (37,8%) e estresse (13,3%). Quanto aos fatores que promoveram alívio de fadiga, foram descritos descansar (53,3%), dormir (6,7%) e se alimentar (6,7%). A fadiga mostrou-se um achado relevante entre os idosos pesquisados, por isso merece a atenção da equipe de enfermagem para identificação e adequado manejo.
Alterações oculares em unidade de terapia intensiva: scoping review
Authors: Santos Queila Faria dos , Oroski Paes Graciele , Bezerra Góes Fernanda Garcia
Published: July 2021

Mapear as evidências científicas sobre alterações oculares em pacientesinternados em terapia intensiva. Trata-se de uma revisão de escopo, com adoção da estratégia PPC nas bases de dados PUBMED, WEB OF SCIENCE e a biblioteca virtual SCIELO. Adotou-se como elegiveis, estudos primarios, empiricos, quantitativos e qualitativos, publicados em três idiomas. Foram encontrados 204 artigos e após análise, selecionou-se 08 artigos para compor o estudo. A lagoftalmia apresenta-se como principal alteração ocular e fator determinante para o desenvolvimento de danos oftálmicos. Evidencia-se que o ambiente, a terapêutica instituída e as próprias comorbidades do paciente possuem associação com as alterações oculares. As doenças oculares são passíveis de prevenção. O diagnóstico precoce de alterações oculares e a rastreabilidade dos fatores de risco para doenças oculares são medidas necessária para evitar ocorrência de dano ocular aos pacientes internados em terapia intensiva.
Projeto terapêutico singular durante estágio em ambiente hospitalar: relato docente
Authors: Cremonese Luiza , Schuh Laísa Xavier , Nunes Barreto Camila , Quevedo Alves Fernanda , Lopes Munhoz Oclaris , Schaurich Diego
Published: July 2021

Relatar a experiência docente de utilização do Projeto Terapêutico Singular em ambiente hospitalar durante o estágio supervisionado do 10º semestre do Curso de Bacharel em Enfermagem. Trata-se de um relato de experiência de docentes de uma Universidade do interior do Rio Grande do Sul a partir da vivência prática da utilização do PTS em cenário hospitalar. A solicitação para realização do PTS ocorreu na disciplina de Assistência de Enfermagem ao Adulto e Idoso Hospitalizado, do Curso de Graduação em Enfermagem. O PTS possibilitou que o discente conseguisse organizar melhor suas ideias e proposições de cuidado alicerçado em evidências científicas, culminando em maior associação teórica e prática. O PTS é uma tecnologia capaz de auxiliar na interpretação do processo saúde-doença, fortalece a autonomia e preparo do acadêmico para realizar discussões de casos e proposições de soluções de problemáticas pertinentes à prática assistencial, fortalecendo seu pensamento crítico-reflexivo no cuidado de enfermagem.
Implicações do uso das tecnologias da informação e comunicação no padrão de sono das crianças: uma revisão de scoping
Authors: Pascoal Valentim Patrícia Alexandra , Julião Bacatum Claúdia Mariana
Published: July 2021

As Tecnologias de Informação e Comunicação (TIC) são parte integrante da vida cotidiana das crianças, contudo podem causar distúrbios ao nível do padrão de sono. Esta revisão de scoping, segundo a metodologia de Joanna Briggs Institute, pretende identificar as evidências científicas existentes, sobre as implicações do uso das TIC no padrão de sono das crianças. Foram identificadas 260 publicações, das quais 12 artigos foram analisados. Os estudos referem que as crianças que utilizam as TIC tendencialmente deitam-se mais tarde, necessitando de mais tempo para adormecer e acordam mais vezes durante a noite. Neste sentido, a qualidade e quantidade do sono, pode ser influenciado pelo modo de utilização das TIC. A evidência demonstra que a implementação de intervenções educativas, com foco na literacia em saúde, sendo esta uma área sensível aos cuidados de enfermagem, podem contribuir para a promoção de hábitos de sono saudáveis relacionado com o uso das TIC.
Cikkismertetés: Tanuljunk együtt, hogy csökkenjen az iskolai zaklatás és agresszió!
Authors: Járomi Éva
Published: July 2021

A gyermekek és fiatalok körében terjedő zaklatás (bullying), agresszió és erőszak napjainkban a komoly következményekkel járó népegészségügyi problémák közé sorolható. Az Egészségügyi Világszervezet (World Health Organization, WHO) meghatározása szerint a bántalmazás a fizikai vagy pszichológiai erő saját magunkkal vagy másokkal szembeni szándékos alkalmazása. Az agresszió ellenséges vagy romboló magatartást foglal magában, és a zaklatás vagy az erőszak megszokott része. A zaklatás a brit fiatalok körében elterjedtebb, mint a többi nyugat-európai országban, és jellemzően internetes zaklatás (cyberbullying) formájában valósul meg.
Cikkismertetés: Az önbizalom és a nem hatása a stresszreakciókra
Authors: Varga Szabolcs
Published: July 2021

A dohányzás és alkoholfogyasztás egyik fő motivációs tényezője a coping, azaz a stresszhatásokkal való megküzdés. A pozitív önértékelés és énkép az egyik fő pszichológiai tényező, mely befolyásolja az egyén stresszkezelési folyamatát. Az RWTH Aachen Egyetem kutatói (több nemzetközi intézet munkatársának bevonásával) az önértékelés és a stresszkezelés kapcsolatát és annak nemi különbségeit vizsgálták; hormonális, viselkedési és idegi szinten egyaránt. A kutatók 80 egészséges résztvevőt vontak be a mintába, akik fMRI-stressz feladatot végeztek el. A kutatás konklúziója, hogy a férfiak elkötelezettebbek a stresszel járó feladatok teljesítésében. Az alacsony önbizalom mindkét nem esetében növelte az érzelmi és stressz feldolgozásra, kognitív kontrollra fordított erőfeszítést.
Cikkismertetés: Magas részvételi hajlandóság, magas halálozási arány?
Authors: Devosa Iván
Published: July 2021

A kutatás eredeti célja a népességalapú egészségügyi vizsgálatok, illetve az életmódbeli beavatkozással járó kutatások hatékonysági mutatóinak összevetése volt a részvételi arány alapján. A dán „Inter99” randomizált vizsgálatban megkérdezett személyek alacsony, közepes és magas részvételi hajlandóságú csoportjaiban a betegségspecifikus halálozások eltérését vetették össze a férfiak és nők között.
Cikkismertetés: Hasznos a jó szomszédi viszony?
Authors: Prievara Dóra Katalin
Published: July 2021

Számos kutatás vizsgálta már az egészség és a társadalomban betöltött hely közötti kapcsolatot, melyek alapján ismert, hogy a kedvezőtlenebb társadalmi helyzetű emberek általában rosszabb egészségi állapottal rendelkeznek, magasabb köreikben a különféle betegségek megjelenésének a kockázata és a várható élettartamuk alacsonyabb, mint a magasabb társadalmi státuszú személyeké. Az egészség-egyenlőtlenségek csökkentésére irányuló erőfeszítések ellenére azonban az egészség területén az osztályok közötti különbségek tovább szélesednek. A tanulmány célkitűzése a jövedelem és az egészség kapcsolatának vizsgálata volt, illetve annak elemzése, hogy milyen moderáló erővel bír minderre a szociális hálózat egy speciális altípusa, a szomszédsági kapcsolatok.
Nyíregyháza egészsége tematikus blokk előszó
Authors: Sárváry Attila , Szelesné Árokszállási Andrea , Gyulai Anikó , Jávorné Erdei Renáta
Published: July 2021

Bevezetés: A magyar lakosság egészségi állapota továbbra is kedvezőtlenebb az Európai Unió (EU) és az OECD országok átlagához képest. Az egészségtelen táplálkozás szoros összefüggést mutat a szív- és érrendszeri betegségekkel, a rosszindulatú daganatos betegségekkel, a 2-es típusú cukorbetegséggel és az elhízással. A kutatásunk célja, hogy felmérjük Nyíregyháza felnőtt lakosságának táplálkozási szokásait és a tápláltsági állapotát. Módszertan: A keresztmetszeti vizsgálatban az Európai Lakossági Egészségfelmérés (ELEF) 2009-es táplálkozással, tápláltsági állapottal kapcsolatos kérdéseit használtuk. A tápláltsági állapotot az önbevalláson alapuló testtömeg és a testmagasság adataiból számított testtömegindexel (TTI) jellemeztük, a TTI-t a WHO által meghatározott kategóriáknak megfelelően osztályoztuk. A statisztikai elemzést az SPSS (Version 22.0) programcsomag segítségével végeztük el, az összefüggés elemzéshez a Fisher-egzakt tesztet használtuk. Eredmények: Nyíregyháza felnőtt lakosságának, több, mint fele naponta fogyaszt zöldséget és/vagy gyümölcsöt, ami alacsonyabb az országos átlagnál. A nők körében a gyümölcsfogyasztás szignifikánsan magasabb volt a férfiakéhoz képest (p=0,008). Teljes kiőrlésű pékáru naponta történő fogyasztása a lakosság 40%-át, a heti rendszerességű halfogyasztás az egyharmadát (33,5%) jellemezte, a férfiak halfogyasztása szignifikánsan magasabb volt a nőkéhez képest (p=0,003). A nyíregyházi férfiak 70%-a, a nők fele túlsúlyos vagy elhízott. Az életkor növekedésével növekszik a túlsúlyosak, elhízottak aránya mindkét nemben. A legnagyobb az elhízottak aránya a 35-64 éves férfiak körében (41,5%), míg a nők körében ez az arány a 65 éves és idősebb korcsoportban a legmagasabb (34%). Következtetések: Nyíregyháza lakossága friss zöldség- és gyümölcsfogyasztása alacsonyabb az országos átlagnál, viszont a teljes kiőrlésű pékáru és halfogyasztás igen kedvező. A túlsúly és elhízás aránya a férfiak körében magasabb az országos átlagnál, különösen a 35-64 éves korcsoportban. A felnőtt lakosság körében célzott prevenciós programokat kell szervezni a túlsúly és elhízás megelőzésére, a fizikai aktivitás és az egészséges táplálkozás propagálása, különösen a középkorú férfiak számára.