bluuebunny/crossref_metadata_2025 huggingface dataset:
DO BALÉ CLÁSSICO À DANÇA MODERNA: IMPRESSÕES E PISTAS PARA O ENTENDIMENTO DAS CONCEPÇÕES DE CORPO NA DANÇA
Authors: Do Nascimento Diego Ebling
Published: April 2019

O modelo de corpo estipulado para os bailarinos e bailarinas até o final do século XIX sofre modificações consideráveis com as propostas dos precursores da dança moderna. Este trabalho teórico busca mostrar as transformações referentes as concepções de corpo no período de ruptura entre a dança clássica e a dança moderna, onde a busca por corpos treinados e idênticos se transforma na busca pela liberdade e expressividade corporal. É possível perceber que foi a partir dessas modificações que a dança retoma seu lugar original, criando um espaço-tempo possível de refletir e expor a realidade vivida no momento histórico em que ela acontece.
CORPO ESTRANHO: O DESAMPARADO QUE ENCONTRA SUA POLÍTICA DE SER
Authors: Faria Juliano Ribeiro , Bessa-Oliveira Marcos Antônio
Published: April 2019

Este trabalho emerge como pesquisa em Arte a partir da condição na qual sempre fui colocado, de corpo estranho, por ser imperfeito ao modelo de corpo colonizado imposto no mundo. Continuamente, por isso, vivo sendo posto na categoria de “Ser menos”, como outros tantos corpos estranhos também vivem: ocupando o lugar do fundo na cena para deixar a coreografia em dança uniforme ou as apresentações teatrais ou musicais mais belas na escola. Deste modo, construo esta pesquisa ancorado em uma episteme cultural, que é também uma luta escrita/inscrita no meu próprio corpo, para dar visibilidade ao corpo estranho como produtor de arte, cultura e conhecimentos, quando esse encontra sua casa, o “seu corpo” (BERTHERAT, 2010), na escola.
Qualitative Analysis to Reduce Unhealthy Houses on Kerinci District, Indonesia
Authors: Wibowo Yudha Gusti , Ramadhan Bimasatyaji , Anurogo Dito , Illiandri Oski , Naswir Muhammad
Published: April 2019

Healthy houses is a problem on developing countries. This study mainly focus on urban areas and the health effect of poor water and sanitation, floor, inadequate heating, poor food storage and overcrowding. This research has used qualitative method with questionnaires has spread to a hundred and six homes about characteristics of healthy home. The questionnaires have spread to Pondok village and Bukit Kerman village, Kerinci District, Jambi Province, Indonesia. Result showed 90% houses too dense and 10 no dense, 98% houses on this area are unhealthy houses and 10% healthy houses. Unhealthy houses that affected diseases such as 20% diaarhea, 29% other diseases, 13% ARI, 10% malaria 15% skin and 12% no diseases. We recommended to make a public health policy to reducing unhealthy houses on this area.
Visi Baru Konselor Sekolah dalam Rangka Meningkatkan Kualitas Layanan Pendidikan di Sekolah dan Madrasah
Authors: Ardimen Ardimen
Published: April 2019

This study aims to describe the new vision of school counselors in order to improve the quality of education services. This study uses library research methods by reviewing reference books, scientific journals, documents, magazines, legislation and the results of similar studies accessed through an open journal system via internet search. The data collected was analyzed by using conten analysis techniques to obtain theories or concepts in answering the problem of this research. The results of the study show that the implementation of a new vision of school counselors can improve the quality of education services in schools and madrasah. To that end, the performance of the school counselor is no longer positioned in the relief effort to overcome the problem of students, but the counselor carries out counseling to help students who are undergoing the process of self-development in order to achieve optimal development, independence and happiness in living life. Among the new visions of the school counselor are; (1) academic focus/ student achievement, (2) building based on student strengths, (3) counselors as program leaders, planners and developers, (4) focusing on academic counseling, learning and achievement, and supporting student success, (5) counseling is an integral part of the education system, (6) counseling services focus on mission and role identification, (7) using data to influence change, etc.
A Mouse Model of Acute Q Fever Following Infection Via A Non-Invasive Intratracheal Inoculation Method
Authors: Hu Xueyuan , Yu Yonghui , Feng Junxia , Fu Mengjiao , Dai Lupeng , Lu Zhiyu , He Zemin , Luo Wenbo , Xiong Xiaolu , Wang Jinglin , Zhou Dongsheng , Wen Bohai , Zhao Baohua , Jiao Jun
Published: April 2019

Background: Q fever is a worldwide zoonosis caused by Coxiella burnetii and mainly transmitted by aerosols. This study aims at establishing a systematic and efficient mouse model of acute Q fever via intratracheal (IT) inoculation of aerosolized C. burnetii.
Methods: BALB/c mice were infected with C. burnetii via IT route using a non-invasive aerosol pulmonary delivery device to directly place the living C. burnetii organisms into their tracheas. The bacterial loads, pathological lesions, and serological responses were analyzed in mice, and compared with those of mice infected via intraperitoneal (IP) route.
Results: As early as at day three post-infection (pi) with a low dose of C. burnetii (1×10⁴ per mouse), a large amount of C. burnetii organisms were determined in blood, lungs, hearts, livers, and spleens of the mice. The inflammatory infiltration was observed in hearts and lungs of mice. Compared with mice infected via IP route, the mice infected via IT route exhibited a higher level of bacterial loads and more severe pathological lesions in hearts and lungs at day 3 and day 7 pi.
Conclusions: These data indicated that IT route is more efficient than IP route to cause acute C. burnetii infection in mice. Overall, we successfully established a mouse model of C. burnetii infection via IT route, which is useful for investigations of pathogenesis and immunity of acute C. burnetii infection as well as evaluation of therapeutic drugs and preventive vaccines of Q fever.
Balanced duplicated gene expression supports an autotetraploid ancestor of Salicaceae plants
Authors: Zhao Yu-Hao , Wang Jin-Peng , Yuan Jia-Qing , Li Jing , Ge Wei-Na , Zhang Jin , Xie Yangqin , Hou Yue , Shehzad Tariq , Wang Xiyin
Published: April 2019

Background

Autopolyploids refer to the increase in the genome from the same species, usually produced by direct doubling of diploid chromosomes. The polyploid formed by chromosome doubling of the same species is called homologous polyploid.

Results

In order to further check whether the Salicaceae-common tetraploid is homologous or heterologous, with grape as the outer group, by performing gene collinearity analysis, we explored whether two sets of poplar chromosomes or chromosomal regions have balanced gene expression levels and similar gene function. Paired T-test showed that duplicated genes in colinearity were balanced in expression, which is expected if the tetraploid ancestor was homologous whole-genome duplication, or autopolyploidization. Moreover, KEGG enrichment analysis and pathway annotation showed that most of the differentially expressed genes were related to metabolism. A comparison of different groups of flowering plants suggests that autopolyploidization may not provide comparable biological and evolutionary vigor to establish large plant groups, as observed in poaceae and brassicaceae families. The present analysis contributes to understanding the biology and evolution of Salicacea plants and beyond.

Conclusions

There was no significant difference in gene expression and gene function between two sets of genomes of poplar.
Development of a decision support system for managing Heterodera schahtii in sugar beet production
Authors: Omer Zahra S. , Levenfors Jens , Andersson Susanne , Wallenhammar Ann-Charlotte
Published: April 2019

A decision support system, SBN-Watch, was developed to demonstrate the influence of crop rotation and the choice of sugar beets (Beta vulgaris) varieties on the sugar beet cyst nematode Heterodera schachtii Schmidt (SBN) population and sugar beets yield. The database in SBN-Watch consists of a varietal unit with five sugar beet varieties representing the three categories “Standard,” “Tolerant” and “semi-tolerant.” Data of minimal yield (m), tolerance limit (T), and population dynamic parameters were obtained from published commercial field trials conducted in Sweden and Denmark in 2011. Additionally, a sanitation intercrop unit with different resistant classes of white mustard (Sinapsis arvensis) and oil seed radish (Raphanus sativus) was included. The relationship between initial population (Pi) and sugar yield as well as SBN final population in soil (Pf) was calculated by two Seinhorst equations. Few data inputs are required to be entered by the user in SBN-Watch, mainly the initial population (Pi), expected sugar price and exchange rate of € to SEK. The calculated reproduction factor (Rf) values using SBN-Watch corresponded well with varietal characteristics, where the standard variety Mixer had the highest (Rf) values. The influence of the initial SBN population on the calculated sugar yield (tonnes ha−1) was generally small at Pi < 2.
Development of phosphorus recovery reactor for enlargement of struvite crystals using seawater as the magnesium source
Authors: Wongphudphad Pidchaya , Kemacheevakul Patiya
Published: April 2019

Struvite crystallization is an interesting method for the recovery of phosphorus (P) from wastewater. However, the struvite crystals obtained are small, which makes them difficult to separate from wastewater. A continuous reactor for enlarging struvite crystals was developed. Batch-scale experiments were conducted to investigate the optimum factors for the enlargement of struvite crystals. The results of pH experiments showed that P recovery efficiency increased with an increase of pH values (7.6 to 10), while the size of struvite crystals decreased. The results of the Mg:P ratios found that the maximum P recovery efficiency occurred at the maximum ratio of Mg:P. The sizes of struvite crystals were not significantly different. For the variation of temperature values, the results showed that P recovery efficiency and crystal sizes decreased when temperature values increased. Therefore, the optimized conditions for P recovery efficiency and enlargement of struvite crystals for the continuous reactor were pH 8.5 and an Mg:P ratio of 1.2:1 at 30 °C (room temperature). The treated swine wastewater and seawater were continuously fed in at the bottom of the reactor. After 30 days, the size of struvite crystals had increased from 125 μm to 0.83 mm (seven times).
Preparation of mesoporous activated carbon from date stones for the adsorption of Bemacid Red
Authors: Boudia Rabia , Mimanne Goussem , Benhabib Karim , Pirault-Roy Laurence
Published: April 2019

This work concerns the elimination of the organic pollutant; Bemacid Red (BR), a rather persistent dye present in wastewater from the textile industry in western Algeria, by adsorption on carbon from an agricultural waste in the optimal conditions of the adsorption process. An active carbon was synthesized by treating an agro-alimentary waste, the date stones that are very abundant in Algeria, physically and chemically. Sample after activation (SAA) with phosphoric acid was highly efficient for the removal of BR. The characterization of this porous material has shown a specific surface area that exceeds 900 m2/g with the presence of mesopores. The iodine value also indicates that the activated carbon obtained has a large micro porosity. The reduction of the infrared spectroscopy (FTIR) bands reveals that the waste has been synthesized and activated in good conditions. Parameters influencing the adsorption process have been studied and optimized, such as contact time, adsorbent mass, solution pH, initial dye concentration and temperature. The results show that for a contact time of 60 min, a mass of 0.5 g and at room temperature, the adsorption rate of the BR by the SAA is at its maximum. Pseudo-first-order, pseudo-second-order and intraparticle diffusion models were studied to analyse adsorption kinetics. The result shows the adsorption kinetic is best with the pseudo-second-order model. In this study, Langmuir, Freundlich and Temkin isotherms were investigated for adsorption of BR onto SAA. The Freundlich and Temkin isotherms have the highest correlations coefficients. The suggested adsorption process involves multilayer adsorption with the creation of chemical bonds. The mechanism of adsorption of BR by SAA is spontaneous and exothermic, and the Gibbs free energy values confirm that the elimination of the textile dye follows a physisorption.
Effect of Pullulan on Physicochemical, Microbiological, and Sensory Quality of Yogurts
Authors: Chlebowska-Śmigiel Anna , Kycia Katarzyna , Neffe-Skocińska Katarzyna , Kieliszek Marek , Gniewosz Małgorzata , Kołożyn-Krajewska Danuta
Published: April 2019

Background:

Pullulan can partially or completely replace starch or fat, thanks to which it
can be used for the production of dietetic food. It allows you to maintain the desired consistency, and
increases the viscosity of the product.

Objective:

Therefore, an attempt was made to produce yogurts with pullulan addition and determine
the effect of its presence on the number of LAB, pH change, titratable acidity, and sensory quality of
yogurts during storage at 4°C for 28 days.

Method:

The effect of addition of 0; 1.0 and 2.0 % w/v pullulan as a yogurt ingredient on the changes in
pH, acidity, LAB number, and sensory quality of yogurt during storage at 4°C for 28 days was examined.

Results:

Pullulan did not affect yogurt pH, but the addition of 2.0 % w/v pullulan increased the acidity
of yogurt as compared to that of the control yogurt. A statistically significantly higher total number of
Lactobacillus, by approximately 1 logarithmic cycle, was found in yogurts with pullulan than in the
control yogurt on the 28th day of storage. The yogurt with 1.0% w/v pullulan addition showed better
sensory characteristics than that with 2.0% pullulan w/v addition.

Conclusion:

The conducted research proved that the presence of pullulan in the culture medium stimulates
the growth of selected lactic acid bacteria and influences their fermentation capacity. The use of
1.0 % w/v pullulan during the production of yogurts allowed to obtain a sensorically acceptable product,
it had a protective effect on the number of lactic acid bacteria during 28 days of refrigerated storage
of yogurt.
A Review of Chikungunya Virus-induced Arthralgia: Clinical Manifestations, Therapeutics, and Pathogenesis
Authors: Goupil Brad A. , Mores Christopher N.
Published: April 2019

Background:

Chikungunya virus (CHIKV) is a mosquito-borne alphavirus that circulates predominantly in tropical and subtropical regions, potentially affecting over 1 billion people. Recently, an outbreak began in the western hemisphere and has resulted in over 1.8 million reported suspected cases. Infection often results in severe fever, rash and debilitating polyarthralgia lasting weeks to months. Additionally, the current literature reports that CHIKV can result in a severe chronic arthralgia and/or arthritis that can last months to years following the initial infection.

Objective:

The purpose of this review is to evaluate the literature and summarize the current state of knowledge regarding CHIKV-associated disease, including clinical presentation, diagnosis, risk factors for development of severe disease, treatment, and pathogenesis in human patients. Additionally, recommendations are presented regarding avenues for clinical research to help further elucidate the pathogenesis of joint disease associated with CHIKV infection.

Conclusion:

While there is an association between initial CHIKV infection and acute disease, a causal relationship with development of chronic arthralgia has not been established at this time. Potential causes of chronic CHIKV-induced arthritis have been postulated, including viral persistence, induction of autoimmune disease, and exacerbation of pre-existing joint disease. While there are numerous reports of chronic CHIKV-associated arthralgia and/or arthritis, there is currently no evidence of a definitive link between initial infection and development of chronic disease. Additional, prospective clinical research on CHIKV-associated disease is necessary to further determine the potential role of virus and development of chronic joint disease.
Eugenol Supplementation as an Additive to Improve the Thermal Stability of Hedychium coronarium Koening Essential Oil
Authors: Macias Julyleth P.J. , Castro Ricardo I. , Esguerra Saray K.G. , Marin Jaime G. , Guzman Luis , Gutierrez Margarita , Vergara Claudia E. , Forero-Doria Oscar
Published: April 2019

Background:

Eugenol is a phenolic compound with a wide spectrum of biological activities
such as antibacterial and antioxidant.

Objective:

Eugenol is an ideal candidate as a natural antioxidant additive, especially for those substances
that are affected by lipoperoxidation process, this is the case of essential oils that have an
important role in the food, perfumery and pharmaceutical industries, which easily deteriorate under
high temperature, strong light, and reactive oxygen species.

Methods:

In order to evidence the influence of the addition of eugenol in the thermal properties of
Hedychium coronarium Koening essential oil, were determined the chemical composition, antioxidant
properties and TG/DTG analysis after the supplementation with different ratios of
eugenol/essential oil.

Results:

The results showed a high content of oxygenated monoteropenes (50.33%), followed by
monoterpene hydrocarbons (23.35%) and sesquiterpene (19.2%), the TG/DTG analysis presented a
significant increment in the degradation temperature of the essential oil, being the major value 12 ºC
at a supplementation of 4.7% (v/v) of eugenol.

Conclusion:

Finally, the supplementation with eugenol improved the thermal stability of the essential
oil of Hedychium coronarium Koening, which could be applicable to other oils thereby improving
their physicochemical properties.
LEADERSHIP DEFINITIONS APPLICATIONS FOR LECTURERS’ LEADERSHIP DEVELOPMENT
Authors: Rosari Reni
Published: April 2019

Bernard M. Bass (1990), John P. Kotter (1988), and Joseph C. Rost (1993) defined leadership in different meanings. Among the three definitions, Rost’s definition can be as a practical application as well as providing guiding principles for lecturers’ leadership development. Leadership is not a person and it is different from management. Leadership is an influence relationship among leaders and followers who intend real changes that reflect their mutual purposes. Four essential elements that must be present if leadership exists are: (1) the relationship is based on influence, (2) leaders and followers are people in this relationship, (3) leaders and followers intend real changes, and (4) leaders and followers develop mutual purposes.
THE EFFECT OF ETHICAL LEADERSHIP ON VOICE BEHAVIOR: THE ROLE OF MEDIATORS ORGANIZATIONAL IDENTIFICATION AND MODERATING SELF-EFFICACY FOR VOICE
Authors: Sari Utami Tunjung
Published: April 2019

Some ethical violations that occur in both business organizations and the government in turn highlight the important role of leadership in managing ethical accountability. Ethical leadership arises as a result of various ethical violations and demands for leaders to be able to manage ethical accountability. This study explains the mechanism of influence of ethical leadership behavior on voice behavior in private sector organizations in Indonesia. This study attempts to look at the role of organizational identification as a mediator on the influence of ethical leadership on voice behavior and incorporate the effects of mediation and moderation in one model (moderated mediation model) by using self-efficacy for voice as moderating. Learning theory, social exchange, social identity, and self-efficacy were used as the foundation in this study. 230 valid responses from employees took part in this study. The results of the data analysis showed ethical leadership behavior had a positive influence on voice behavior. Furthermore, organizational identification mediates the influence of ethical leadership on voice behavior and self-efficacy for voice moderating that influence. These findings indicate that employees identified with the organization have a tendency to voice behavior, then employees with high self-efficacy for voice will be more confident in their ability to conduct voice behavior.
Safety of Dynamic Intravenous Iron Administration Strategies in Hemodialysis Patients
Authors: Li Xiaojuan , Cole Stephen R. , Kshirsagar Abhijit V. , Fine Jason P. , Stürmer Til , Brookhart M. Alan
Published: April 2019

Background and objectives

Intravenous iron therapy for chronic anemia management is largely driven by dosing protocols that differ in intensity with respect to dosing approach (i.e., dose, frequency, and duration). Little is known about the safety of these protocols.

Design, setting, participants, & measurements

Using clinical data from a large United States dialysis provider linked to health care utilization data from Medicare, we constructed a cohort of patients with ESKD aged ≥65 years who initiated and continued center-based hemodialysis for ≥90 days between 2009 and 2012, and initiated at least one of the five common intravenous iron administration strategies; ranked by intensity (the amount of iron given at moderate-to-high iron indices), the order of strategies was 3 (least intensive), 2 (less intensive), 1 (reference), 4 (more intensive), and 5 (most intensive). We estimated the effect of continuous exposure to these strategies on cumulative risks of mortality and infection-related events with dynamic Cox marginal structural models.

Results

Of 13,249 eligible patients, 1320 (10%) died and 1627 (12%) had one or more infection-related events during the 4-month follow-up. The most and least commonly initiated strategy was strategy 2 and 5, respectively. Compared with the reference strategy 1, more intensive strategies (4 and 5) demonstrated a higher risk of all-cause mortality (e.g., most intensive strategy 5: 60-day risk difference: 1.3%; 95% confidence interval [95% CI], 0.8% to 2.1%; 120-day risk difference: 3.1%; 95% CI, 1.0% to 5.6%). Similarly, higher risks were observed for infection-related morbidity and mortality among more intensive strategies (e.g., strategy 5: 60-day risk difference: 1.8%; 95% CI, 1.2% to 2.6%; 120-day risk difference: 4.3%; 95% CI, 2.2% to 6.8%). Less intensive strategies (2 and 3) demonstrated lower risks of all-cause mortality and infection-related events.

Conclusions

Among dialysis patients surviving 90 days, subsequent intravenous iron administration strategies promoting more intensive iron treatment at moderate-to-high iron indices levels are associated with higher risks of mortality and infection-related events.
Effect of Carburization Parameters on Hardness of Carburized Steel Using MOORA Approach
Authors: Hussein Abbas Khammas , Abbas Laith Kais , Hameed Asraa Kareem
Published: April 2019

In this research, (MOORA) approach based– Taguchi design was used to convert the multi-performance problem into a single-performance problem for nine experiments which built (Taguchi (L9) orthogonal array) for carburization operation. The main variables that had a great effect on carburizing operation are carburization temperature (oC), carburization time (hrs.) and tempering temperature (oC). This study was also focused on calculating the amount of carbon penetration, the value of hardness and optimal values obtained during the optimization by Taguchi approach and MOORA method for multiple parameters. In this study, the carburization process was done in temperature between (850 to 950 ᵒC) for 2 to 6 hours. Quenching was done for the specimens after heat treatments in furnace chamber by using different quench solutions, water, salt and polyvinyl alcohol. Analysis of variances - (ANOVA) were performed for nine experiments in order to optimize the problem that was associated with multiple criteria (parameter) to achieve maximum hardness and depth penetration. The program results showed that the optimum conditions are carburization temperature (950 oC), carburization time (2 hrs.), tempering temperature (200oC), tempering time (10 hrs.), and activator (10 wt. %). Furthermore, the best quenching media was the polyvinyl alcohol.
Efficiency Enhancement of a Dual-axis Solar PV Panel Tracker Using Water-Flow Double Glazing Technique
Authors: Mohammed Farag Mahel , Mohammed Jamal Abdul-Kareem , Nouri Rasha Ali
Published: April 2019

إنّ زاويةَ سقوط أشعةِ الشمس على سطحِ اللوح الشمسي ودرجة حرارته يُؤثّرانِ سلبياً على الطاقة الكهربائية للوح وكفاءته. أن مشكلة زاويةِ السقوط عادةً ما يتم حلها بإستخدام منظومة التتبع (المقتفي) الشمسي ذات المحورِين والذي يُبقي اللوح بشكل مستمر متعامد مع أشعةِ الشمس طِوال اليوم. هذا يُؤدّي إلى أقصى إمتصاصِ للإشعاعِ الشمسيِ والضروريِ لإنتاج الكميةِ القصوى مِن الطاقةِ وعند مستوىات عالية مِن الكفاءة الكهربائية. لحَلّ مشكلةَ  الحرارة فقد تمّ استخدام تقنية الغرفة الزجاجية (المزججة) والتي يتدفقِ خلالها الماء بوصفها طريقة تبريد جديدةِ لتخفيض درجة حرارة اللوح. في هذه البحث، تمّ تصميم منظومِة التزجيج المقترحة بالتكامل مَع منظومة التتبع ثنائية المحاور واجريت التجارب المختبرية عليها لغرض تحسين كفاءةَ اللوح الشمسي، لاسيما في المناخِ الحارِ. نظام التزجيج المُقتَرَحِ يُمْكِنُ أَنْ يُؤدّي وظيفتين بشكل آني، أولاً، يعَمَل أداة تبريد لتقليل الحرارةِ المَخْزُونة في داخل اللوح أثناء عَملها وثانياً مرشِحا بصريا للطيفِ الضوئي. تمّ حساب معاملات التصميمُ الأمثل وبمستويات مختلفة لقيم نظامِ التزجيج وفقاّ لطريقةِ تاكوتشي. تمّ تنفيذ تجارب الإختبارِ في مدينةِ بغداد في العشرين والحادي والعشرين مِنْ يوليو/تموز 2016 على منظومة التتبع في حالتين مع إستعمال مقترح منظومة التزجيج وبدونها. تبُين النتائِج المستحصلة بأنّ، درجةَ الحرارة اللوح الشمسي بإستعمال منظومة التزجيج هَبطت بشكل ملحوظ بمقدار 44% وزادت كفاءتها الكهربائية بحاولي36.6 % عند بالمقارنة مع المنظومة التقليدية عند قيمة اشعاع شمسي 1213 W/m2.
Influencia de los escenarios pedagógicos: aula de clase y laboratorio en el proceso de enseñanza-aprendizaje de las ciencias naturales
Authors: Cuaical Cuaical Diana Lucía , Cuesta Caicedo Diana Maribel
Published: April 2019

El presente artículo de reflexión es resultado de un Trabajo de grado3realizado en colectivo y hace especial énfasis en la influencia que tienenlos escenarios pedagógicos en este caso: aula de clase y laboratorio ylas estrategias didáctico-pedagógicas empleadas por el docente para laenseñanza del área de Ciencias Naturales, esto con el propósito de comprendercomo las condiciones físico ambientales, organización y recursosdidácticos que presentan los escenarios pedagógicos facilitan el procesode enseñanza-aprendizaje del área en mención, para ello se empleó latécnica de observación directa que permitió caracterizar las aulas de clasey laboratorios, con respecto a las estrategias didáctico-pedagógicas seutilizó entrevista a docente y estudiantes, y guías de observación de clase.Así pues, este trabajo permite identificar que las características de lasaulas de clase y laboratorios influyen en el ambiente de aprendizaje de las ciencias naturales, en este sentido, el aula de clase al ser el espacioutilizado con mayor frecuencia para el desarrollo de las clases posibilitala aplicación de diversas estrategias de enseñanza, sin embargo, limita eldesarrollo de actividades experimentales. Por su parte, los laboratorioscuentan con las condiciones y recursos propicios para llevar a cabo estetipo de actividades, por ello es importante alternar el trabajo de aula haciendouso de los diferentes espacios con los que cuentan las InstitucionesEducativas, lo anterior con el fin de propender por diversidad de ambientesde aprendizaje que generen interés por parte de los estudiantes.
Avaliação Educacional Brasileira na Década de 1980: o campo entre duas abordagens
Authors: Borges Regilson Maciel , Rothen Jose Carlos
Published: April 2019

O artigo analisa a configuração do campo científico da avaliação educacional no Brasil na decada de 1980, identificando os agentes que o constituiam e as suas contribuicoes teoricas sobre a tematica da avaliação. Realizou-se uma pesquisa de carater bibliografica e documental, associada às estrategias dos estudos bibliometricos e à analise de conteúdo. Os resultados mostram a participação de 19 pesquisadores brasileiros no processo de desenvolvimento do campo, cujas contribuicoes teoricas apontam para duas principais abordagens de avaliação: uma que se fundamenta principalmente na mensuração dos resultados e outra que defende prioritariamente a participação nos processos avaliativos.
Eficiência na Provisão Educacional no Rio Grande do Sul: uma análise municipal em três estágios
Authors: Franca Marco Túlio Aniceto , Frio Gustavo Saraiva , Caruso Dyana Fett
Published: April 2019

Este artigo buscar mensurar a eficiência na gestão municipal de educação para os municípios gaúchos utilizando dados da FINBRA (Finanças do Brasil), do Censo Escolar, do Atlas do Desenvolvimento Humano e da Prova Brasil. A estratégia utilizada foi um modelo de eficiência decomposto em três estágios a fim de controlar por características discricionárias (ao nível da escola) e que estão sob o controle do gestor, não discricionárias (características estudantis e dos seus familiares) e variáveis de gestão municipal (IDHM, presença de conselho e/ou fundo para educação e densidade demográfica). Os resultados mostram a presença de uma pequena quantidade de munícipios considerados eficientes ou ineficientes, porém, a maioria foi considerada tendo níveis medianos de eficiência. O modelo em três estágios se mostra necessário porque algumas variáveis consideradas como não discricionárias afetaram a eficiência na gestão, além de aspectos relacionados a densidade demográfica e presença de um conselho gestor da política de educação afetaram positivamente os índices de eficiência municipal.
Avaliação do Docente pelo Discente no Âmbito do Ensino Técnico Integrado: evidências de validade da Escala SIR-II
Authors: Paixao Roberto Brazileiro , Rabelo Anamaria Azevedo Lafeta , Bruni Adriano Leal
Published: April 2019

Este artigo teve como objetivo traduzir, adaptar e validar a Escala SIR-II (Student Instructional Report) da organização ETS, especificamente na parte em que trata da avaliação docente, deixando-o apto para ser aplicado aos alunos dos cursos tecnicos integrados ao ensino medio. O instrumento analisado foi composto de cinco dimensoes: Organização e Planejamento; Comunicação; Interação Professor/Aluno; Avaliacoes, Exames e Notas; e Metodos Suplementares de Ensino. O processo de tradução e validação constituiu-se de: tradução, retrotradução, revisao por especialistas, pre-teste e verificação das propriedades psicometricas. A amostra do presente estudo foi composta por 5.622 casos gerados por estudantes de cursos tecnicos integrados ao ensino medio de uma instituicao de ensino federal. O modelo apresentou ajustamento quanto a unidimensionalidade, confiabilidade e convergencia, confirmando a validade da escala em sua versao brasileira.
A trend of international collaborations between inventers
Authors: Yeremchenko О. А.
Published: April 2019

The article analyses data on the international collaborations between inventors from different countries, obtained from a special research completed by the European Commission focusing on the national patent portfolios of European Union countries, countries included in the European Association of Free Trade, countries of North America and Asia.It is noted that learning diffusions and matching of technological solutions are becoming an independent trend of the economics science as it allows to determine the patterns and conditions for achieving technological leadership of companies as well as the whole regions in the world. The current research focuses on the balance between an open exchange of industrially applicable expertise and limitations of the diffusion of technological competencies as a necessary condition for achieving leadership in the markets of highly technological products and services.The article concludes stating that the growth of «hybrid» and «external» patents in various regions of the world, determined by European Commission is, most likely, related to the growth of academic mobility of owners of the unique engineering and research teams, and not due to globalisation and internalisation of industrially applicable expertise, that is always used as a tool for competitive fight for markets of products with a high added value.
Landscapes fire-fighting technologies as a possible scientific-technological priority for Russian Federation
Authors: Kurakov F. А.
Published: April 2019

The article presents data about the size of the economic and ecological damage, caused by the forest fires in Russia, which are qualified as a «big challenge» for the country, the the world’s leader in forest yield. The article evaluates the prospects for developing scientific, engineering and entrepreneurial communities among different countries and large regions in the areas which own forest fires prevention and fighting technologies. The articles provides a patent review of dynamically developing technologies’ cluster, encompassing various approaches to preventing and fighting forest fires. The report notes a presence of domestic competitive scientific-technological inventions, which are registered in sufficient numbers in the form of protectable technical solutions.
Microssonda eletrônica de elétrons U-Th-Pb e La-ICP-MS U-Pb datando de múltiplos eventos hidrotermais e metamórficos registrados em minerais de as albitites uraníferas da Lagoa Real (Brasil
Authors: CHAVES Alexandre De Oliveira , TUBRETT Michael , AVELAR Simone Cristina Pires , RIOS Francisco Javier , SGARBI Geraldo Norberto Chaves , NEVES José Marques Correia , ALVES James Vieira , FUZIKAWA Kazuo , MATOS Evandro Carele de , PRATES Sônia Pinto
Published: April 2019

Os albititos uraníferos de Lagoa Real são rochas que passaram por várias modificações após a formação. A datação química U-Th-Pb por microssonda eletrônica e datação U-Pb por LAICP-MS dos minerais dos albititos revelaram cristalização e metamorfismo isoquímico do protólito (sienitos sódicos portadores de U) em cerca de 2,0-1,9 Ga durante as fases finais do evento orogênico Orosiriano, quando a primeira geração de uraninitas foi formada. Mobilizações múltiplas de urânio e chumbo promovidas por pelo menos cinco eventos hidrotermais (1,7 Ga, 1,5 Ga, 1,3 Ga, 1,1 Ga e 1,0 Ga) foram detectadas nos albititos. A provável formação de um segundo grupo de uraninitas e/ou o reajuste do relógio U-Pb das uraninitas mais antigas durante o evento orogênico Brasiliano (0,5 Ga) também ocorreram.
Geoquímica de Elementos Terras Raras e Elementos Traço na Fluorita: Comparação entre Filões das Partes Norte e Sul do Distrito Fluorítico de Santa Catarina e Implicações no Modelo Genético
Authors: JELINEK ANDRÉA RITTER , NETO ARTUR BASTOS
Published: April 2019

Rare earth elements geochemistry was applied on fluorite from Grão-Pará sub-district, northern Santa Catarina Fluorite District, and compared with southern ore veins data in attempt to identify fluid, REE and F sources. The data suggest different granitic rocks as F sources for southern and northern fluorite and that rare earth elements content in the later was strongly affected by the granitic bodies associated with the Rio dos Bugres shear zone, which is responsible for a distinct Yb/Tb signature. In both sub-districts, F and REE were leached from granites by meteoric fluids. Late Grão-Pará fluorite was deposited under influence of a mixing with halite-saturated saline fluid from the sedimentary cover. When saline fluid became dominant, the fluorite deposition stopped to give place to gorceixite deposition under oxidant conditions.
Uma Peculiar Tafocenose Controlada por Ação Biogênica no Triássico Médio do Rio Grande do Sul, Brasil
Authors: DIAS PAULA CAMBOIM  DENTZIEN , SOARES MARINA BENTO , MACHADO CRISTINA BERTONI , KISLOWSKI FELIPE FLACH
Published: April 2019

We present here an outcrop with a peculiar fossil assemblage, including a distinct taphocoenosis in comparison to other fossiliferous outcrops of the Santa Maria Formation (Triassic, Paraná Basin). Fossil concentration in this outcrop is made-up of herbivorous non-mammalian cynodonts (Synapsida, Therapsida) only, tentatively assigned to Massetognathus. The taphocoenosis is characterized by the accumulation of bones within a restricted area, with predominance of skull and mandible remains, almost always disarticulated. Bones are mainly disarticulated and chaotically oriented in a massive, red-colored, muddy matrix. Both the nature of rock matrix and the absence of azimuthal orientation of the bones in the taphocoenosis indicated that tractive currents were not the main process responsible by the accumulation of those fossil remains, mainly skull and lower jaws bones. These are considered the less nutritious bone parts of the vertebrate skeleton and according to this, the skulls and lower jaws were left behind by selective scavengers that removed the more nutritious parts. So, this taphonomic model of preservation led us to the hypothesis of a biogenic concentration for this taphocoenosis based upon at the interpretation of this outcrop as a site of concentration of bones by selective scavengers.
Geomorfologia e Potencial de Preservação dos Campos de Dunas Transgressivos de Cidreira e Itapeva, Litoral Norte do Rio Grande do Sul, Brasil
Authors: TOMAZELLI LUIZ JOSÉ , DILLENBURG SÉRGIO REBELLO , BARBOZA EDUARDO GUIMARÃES , ROSA MARIA LUIZA CORREA DA CAMARA
Published: April 2019

The association of several favorable factors (high supply of fine sand to the beach, appropriate wind regime, lowland topography) has resulted in the development of a wide transgressive dunefield that stands out as a fundamental element in the coastal landscape of Rio Grande do Sul, southern Brazil. Along the northern littoral of the state, most of this original ecosystem has been destroyed or highly modified in the last decades, mainly due to the intense urbanization that has been settled in the area. However, some remaining segments of the original eolian field can still be found and, due to ecological, cultural and scenic importance its preservation should be a priority. This work identifies the two most significant of these residual eolian fields in the studied area (Cidreira and Itapeva dunefields), discusses their basic characteristics and analyzes the favorable factors for their preservation. In the Cidreira dunefield de main factor for preservation is the occurrence of some corridors that actively feed the dunes with new sand coming from the beach. In the Itapeva dunefield the basic factor is the existence of bimodal winds from nearly opposite directions that creates reversing dunes. To assure the preservation of these important ecosystems for the future generations it is necessary to impede the progress of the urbanization that threatens both dunefields.
Parâmetros Técnicos para o Aproveitamento Ornamental dos Granitóides Jaguari e Santa Rita, Região de Ibaré, Oeste do Escudo Sul-Rio-Grandense
Authors: RENNER LEONARDO CARDOSO , PULZ GÊNOVA MARIA
Published: April 2019

The Jaguari and Santa Rita Intrusive suites crop out in the Ibaré region, Southwestern of Sul-rio-grandense Shield, around 340 km from Porto Alegre, Rio Grande do Sul State. These stratigraphic units contain granites of Brasiliano Cycle, which are research to aim ornamental stones. The studied granites occur in boulder fields and pavements. The granulation, colour and paragenesis of the studied rocks were considered as criteria to distinguish petrographic facies to ornamental applications. Petrographic data combined with technological assays (absorption, apparent porosity, density, sound velocity, resistance to bending, uniaxial compressive strength, impact strength and Amsler abrasion) of red sienogranite facies of Jaguari Intrusive Suite, as well as the pink and grey monzogranite facies of Santa Rita Intrusive Suite indicate that these rocks are adequate to use in façades facing and trim, decorative and engineering purpose (stone flooring and structural performance).
Extração de Rodovias Utilizando Snakes
Authors: DE OLIVEIRA RAFAEL MONTANHINI SOARES , DAL POZ ALUIR PORFIRO
Published: April 2019

This paper presents a methodology for semi-automatic road extraction from digital images using active contour models or snakes. Snakes was proposed almost two decades ago, consisting in a parametric curve controlled by photometric and geometric constraints. This last ones generate internal forces that control the shape of the snakes curve. The photometric constraints generate external forces that attract the snakes curve to the selected feature, i.e., the road. As this snakes-based method is semi-automatic, firstly the operator must describe the road roughly using at least six seed points. From this initial position, the snakes curve moves around at each interation, stabilizing when it coincides with the road. This road extraction methodology was tested with digital aerial images of different resolution. The experimental results obtained with these images showed the method’s potential in accurate and reliable road extraction.
Contribuição do Estudo Aeromagnetométrico e de Imagens Orbitais (TM LANDSAT 5) ao Conhecimento do Arcabouço Geológico do Distrito Fluorítico de Santa Catarina (Brasil) e suas Implicações para a Prospecção de Fluorita
Authors: HOFF ROSEMARY , BASTOS NETO ARTUR CEZAR , ROLIM SÍLVIA BEATRIZ ALVES
Published: April 2019

Geophysical (aeromagnetometry) and remote sensing (TM LANDSAT) data allowed to recognize different structural patterns at the Santa Catarina fluorite district. These features correspond to N-S and NNE-SSW structural lineaments with potential environments for fluorite prospection. In detail, the used treatment allowed to identificate minor structures associated with these lineaments and showed that two principal structures carring mineralization prolongs themselves for dozens of kilometers in areas where previous existence were not even suspected. So a serie of data were searched about origin, evolution and relative chronology for the structures present in several directions, just like questions about the geological evolution of the district.
Variáveis Geológicas no Comportamento das Razões qc/N em Porto Alegre, RS – Brasil
Authors: NAIME ROBERTO HARB , FIORI ALBERTO PIO
Published: April 2019

The gathering of geotechnical investigation by SPT and CPT follow geological and environmental criteria, identified in maps, allowed identify different units, influence zones of degree of maturity or geomorphological conditions, influence of fault zones and different alluvial areas, allowed to identify different behavior of ratio qc/N in soils of Porto Alegre city. This work presents the criteria utilized for this differentiation, showing the figures of correlation between qc and N, and figures showing the behavior of K (qc/N) related to the depth, with considerations about the results.
Utilização do Software GPSeq na Solução Rápida das Ambigüidades GPS no Posicionamento Relativo Cinemático de Bases Curtas
Authors: MACHADO WAGNER CARRUPT , MONICO JOÃO FRANCISCO GALERA
Published: April 2019

Centimeter level GPS positioning is based on the very precise carrier beat phase measurements. However, this observable is ambiguous by a number of whole cycles between the satellite and receiver antenna at the first epoch of data collecting, which is called the ambiguity. GPS ambiguities are introduced as parameters to be estimated in the observation equations. However, since they are integer numbers there is no standard techniques for solve them. One of the ways is to apply sequential conditional least-squares estimation together with integer search techniques. The ambiguity resolution can be divided in two steps: estimation and validation. The estimation is concerned with the computation of the ambiguities values. The validation step is used to infer if the estimated value can be accepted or not. From the last decade until nowadays ambiguity resolution has been one of the most important research topic in geodetic positioning and a several methods have been proposed. Special attention has been made about the fast ambiguity resolution. The aim of this paper is to investigate the ambiguity resolution in the context of relative kinematic positioning and its implementation in the GPSeq software, which is a GPS data processing software developed in academic environment. In this paper some experiments about kinematic processing are presented, whose results shown that the GPSeq solution is compatible on the centimeter level with Reliance software. The results also shown an inefficiency of the ratio and the difference between the quadratic form of the residuals of the second best and best solution tests in validating the ambiguity resolution in time limits of solution of the baselines processed.
Caracterização Textural dos Sedimentos de Fundo do Lago Guaíba (sul do Brasil) e sua Importância em Diagnósticos Ambientais
Authors: LAYBAUER LUCIANO , BIDONE EDISON DAUSACKER
Published: April 2019

This work detaches the importance of understanding the sedimentary dynamics in environmental researches. One hundred eighty seven bottom sediment samples from Guaíba Lake were collected in 1998. These samples were analyzed for texture and organic matter content. Those physical parameters associated to the lake’s morfodynamics show preferential sites to accumulate fine sediments and organic matter; those are potential geochemical carriers of pollutants. Four textural fields (A: 0-10%, B: 10-50%, C: 50-90% and D: 90-100%) based on the mud percentage (fraction <63µm) of the sediments were defined. They indicate a growing potential of pollutant sorption. Environmental assessment should prioritize sampling of fields C, and especially D, to the detriment of fields A and B. the textural map based on this approach, shows the division of Guaíba Lake in three great cells of fine sediments called, North cell, Central cell and South cell. Future environmental researches carry on the Guaíba Lake can use this tool to orient sediment sampling.
Minerais Pesados dos Sedimentos do Fundo da Enseada de Caraguatatuba, São Paulo, Brasil
Authors: CORRÊA IRAN CARLOS STALLIVIERE , ELIAS ANDRÉIA REGINA DIAS
Published: April 2019

The bottom sediments of the Caraguatatuba bay, localized in the coast of São Paulo State, were collected for a qualitative study of the heavy minerals in the sandy fraction between 0,125 and 0,062 mm. The mineralogical study allowed the recognition of three groups of heavy minerals: group I – opaque minerals, with magnetite, ilmenite and pyrite; group II – transparent minerals, with amphibole, pyroxene, epidote, biotite, muscovite, zircon, tourmaline, titanite, rutile and apatite; and group III – carbonates, represented by bioclasts and aragonite needles. The source areas of these heavy detritic minerals are related with rocks of the coastal complex, of syntectonic granites and of the alkaline rocks from São Sebastião island. The average content of heavy detritic minerals in the Caraguatatuba bay is 0,77%. Besides biotite and bioclast material, magnetite and ilmenite, are the most abundant phases with an average percentage of 12,9% in the 0,125/0,062 mm fraction.