bluuebunny/crossref_metadata_2025 huggingface dataset:
Печь кипящего слоя для обжига цинковых концентратов как объект регулирования
Authors: Ивакина Светлана Анатольевна , Мунц Владимир Александрович
Published: November 2019

Актуальность исследования обусловлена непрерывным увеличением использования цинка в мире. Получение цинка - дорогостоящий процесс, одним из этапов которого является обжиг сульфидных цинковых концентратов (шихты) в печи кипящего слоя с использованием воздушного дутья, обогащенного кислородом. Поскольку гранулометрический состав шихты, ее влажность и состав непостоянны, температура кипящего слоя может изменяться и требует непрерывного контроля со стороны оператора. Огромная масса слоя определяет большую инерционность слоя, поэтому необходимо использование системы автоматического регулирования. Цель исследования: оптимизация работы печи кипящего слоя для обжига сульфидных цинковых концентратов, в частности, введение автоматического регулирования температуры кипящего слоя во избежание колебания температуры в широких пределах. Значительное понижение температуры слоя приводит к ухудшению обжига концентрата, как следствие, уменьшается выход конечного продукта - цинка. При повышении температуры существенно возрастает опасность шлакования слоя из-за возможных его локальных перегревов. Для этого необходимо на основе изученной кинетики окисления цинкового концентрата в печи кипящего слоя получить зависимость температуры слоя от расхода шихты как расчетным, так и экспериментальным путем. Объект: печь кипящего слоя Челябинского цинкового завода для обжига сульфидного цинкового концентрата. Методы: получение расчетной зависимости температуры кипящего слоя от расхода шихты на основе изученной кинетики окисления цинкового концентрата; экспериментальное изучение динамики изменения температуры слоя при изменении расхода шихты. Результаты. Разработана математическая модель переходных процессов в печи кипящего слоя для обжига цинковых концентратов, позволяющая рассчитать изменение температуры слоя и концентрации горючих веществ в нем при изменении расхода загружаемой в печь шихты. Сопоставление расчетов с экспериментальными данными показали хорошую сходимость результатов. На основании полученных данных создана приближенная модель печи кипящего слоя в ПТК «Овация» и разработан алгоритм регулятора температуры кипящего слоя. Внедрение на ПАО «ЧЦЗ» регулятора температуры позволит без участия оператора поддерживать заданную температуру кипящего слоя, постоянство горючих в слое, исключить недожег шихты и снизить опасность шлакования слоя.
Подходы к созданию геоинформационных моделей городских территорий для учета экологической составляющей при ведении единого государственного реестра недвижимости
Authors: Трубина Людмила Константиновна , Аврунев Евгений Ильич , Николаева Ольга Николаевна , Каленицкий Анатолий Иванович , Антипов Илья Тимофеевич
Published: November 2019

Актуальность. В связи с проводящейся в России реформой системы Государственного кадастра недвижимости необходимо совершенствование организации кадастровой деятельности для повышения объективности и достоверности информации о земельных участках и оптимизации использования земель. Одним из актуальных направлений является учет экологической составляющей при ведении кадастровой деятельности на урбанизированных территориях, характеризующихся высоким уровнем загрязнения окружающей среды. В настоящее время официально утвержденная методика такого учета отсутствует, а подходы, предлагаемые различными авторами, в большинстве своем основаны на регистрации и оценке существующих уровней загрязнения основных природных компонентов окружающей среды. При этом экологическая обстановка города не рассматривается как целостная динамическая система, и не принимаются во внимание ее изменения во времени и пространстве. Для системного рассмотрения экологической обстановки городских территорий необходим комплексный анализ влияния источников загрязнения и процессов распространения загрязняющих веществ, определяемых природными условиями территории и особенностями городской инфраструктуры. Цель работы: обоснование подхода к учету экологической составляющей при кадастровой оценке территорий путем геоинформационного анализа и трехмерного картографического моделирования процессов распространения загрязняющих веществ в городской среде. Методы: геоинформационный анализ, картографическое моделирование, методы картографической визуализации данных, 3D-моделирование геопространственных данных. Результаты. Предложен подход к экологической оценке состояния урбанизированной территории, основанный на анализе и изучении потоков переноса загрязняющих веществ. Обоснована логическая последовательность интеграции разнородных экологических данных при моделировании потоков переноса вещества. Построена цифровая модель рельефа и цифровая модель местности г. Новосибирска. Сформирована база экологических данных на территорию города. Выполнено экологическое зонирование территории г. Новосибирска по комплексному показателю степени опасности. Выполнено 3D-моделирование потоков переноса загрязняющих веществ от техногенных объектов экологической опасности. Выводы. Предложенный подход обеспечивает динамическое рассмотрение экологической ситуации на территории города как результата взаимодействия природных и городских потоковых систем. Этим обеспечивается детальность и объективность оценки экологической обстановки в пределах конкретных кадастровых кварталов, что закладывает основу для внесения результатов экологической оценки в перечень собираемых кадастровых сведений.
Language teaching strategies and techniques used to support students learning in a language other than their mother tongue
Authors: Tavoosy Yoones , Jelveh Reza
Published: November 2019

This research attempts at exploring language teaching strategies and techniques that can be used in classroom settings to improve student learning in a language other than their native languages. This paper aims to investigate the previous research on models of learning and raise teacher awareness of language learning and create a resource bank of language teaching strategies, ideas and techniques for teachers to use when implementing units of inquiry.

Keywords: Language teaching, learning strategies and techniques, mother tongue, student learning.
Evaluation of prospective teacher’s attitudes regarding creative drama courses
Authors: Gursoy Aysun
Published: November 2019

The aim of this study is to examine the attitudes of prospective teachers attending the teaching department in universities in North Cyprus according to various variables such as gender, age, department, class, place of residence of families and type of high school they graduated from. For this purpose, attitude scale towards creative drama course was applied to prospective teachers who took creative drama course in preschool teaching and hearing impaired education programs of Near East University. Before and after creative drama education and attitude scores of prospective teachers were examined according to independent variables. At the end of the study, it was seen that the prospective teachers' attitude scores towards creative drama differed significantly in favour of women before education, but this difference disappeared after education. In addition, it was found that the attitude scores of the prospective teachers did not show a statistically significant difference according to the variables of age, department, class, place of residence of families and type of high school they graduated from.
Keywords: Age, attitude, class, creative drama, prospective teacher
Student growth through goal setting
Authors: Al-Bataineh Adel Tawfig , Brenwall Lisa , Stalter Kristi , York Jessica
Published: November 2019

This mixed methods research study explored how goal setting influences student growth in reading fluency, motivation and self-efficacy of second through fifth graders at school in central Illinois. Literature suggests that student goal setting can have a positive impact on the academic development of a student. In addition to academic achievement, research found goal setting to affect self-efficacy and motivation. A combination of qualitative and quantitative data collection methods was used to gather and evaluate students’ reading fluency scores. This data provided a starting point from which surveys were utilised to gain a more in-depth understanding between goal setting, self-efficacy and motivation. The results of the study indicate that interventions along with goal setting could increase reading achievement. The analysis supports the claim that goal setting can affect words read correctly, but not accuracy. The analysis also found that goal setting can influence student selfefficacy growth. These findings could provide classroom teachers with valuable information that would have an impact on student growth.
Keywords: Elementary education, goal setting, reading fluency, self-efficacy, student growth
Evaluación de antioxidantes en el té de hojas de camote morado (Ipomoea batatas L.)
Authors: Cervantes-Sierra Rebeca , Barragán-Condori Melquiades , Chaquilla-Quilca Guadalupe
Published: November 2019

Las hojas de camote morado (Ipomoea batatas L.) un subproducto de la agroindustria, son utilizadas principalmente en la alimentación animal, en algunos países asiáticos son consumidas como vegetales en ensaladas; una nueva alternativa de uso para estas hojas en nuestra región podría ser mediante bebidas tipo té, a fin de extraer compuestos bioactivos presentes en sus hojas. Por lo que el objetivo del presente trabajo fue determinar los compuestos fenólicos y la capacidad antioxidante del té de hojas de camote morado (TCM), para ello se realizó una extracción acuosa a temperatura de ebullición de las hojas secas de camote morado proveniente del valle de Pachachaca, Abancay Apurímac-Perú, posteriormente se procedió a analizar, tomando como referencia al té verde comercial (TVC). Se determinó el contenido de Polifenoles totales por el método de Folin Ciucalteau, obteniéndose valores para TCM y TVC de 14.16 y 9.40 mg de GAE/g de hojas respectivamente. También se evalúo la actividad antioxidante por 2 métodos químicos; el primero mediante la Capacidad antioxidante equivalente a Trolox (TEAC) con el ácido 2,2’-azino-bis-3-etilbenzotiazolina-6-sulfónico (ABTS) obteniéndose 8.61 y 7.98 µmol Trolox/mL en TCM y TVC respectivamente, demostrando estos resultados que el TCM presenta mayor poder bioactivo y capacidad antioxidante; así mismo se evalúo la TEAC con 1,1-diphenyl-2-picrylhydrazyl (DPPH) reportando valores 25.16 y 25.63 µmol Trolox/g para TCM y TVC, implicando estos resultados que el TCM presenta una capacidad antioxidante semejante al del TVC considerado por excelencia como bebida antioxidante. Se encontró además una correlación r=0.9129 entre polifenoles y antioxidantes.
Producción de proteínas recombinantes a partir de animales transgénicos: Sistemas y aplicaciones
Authors: Alvarado-Madrigal María Fernanda , Chavarría-Quirós Tannia , Leiva-Montero Brayan , Mora-Román Juan José
Published: November 2019

El uso de animales transgénicos para la producción de proteínas recombinantes con fines terapéuticos ha sido una alternativa utilizada para la producción de medicamentos. La habilidad de realizar complejas modificaciones post traduccionales de una manera eficiente es una ventaja que este tipo de tecnología posee sobre el uso de otros organismos transgénicos. Por esta razón, a lo largo de los años se han desarrollado diferentes animales transgénicos (rumiantes, conejos, cerdos, aves e insectos) y se han estudiado distintos sistemas (leche, huevo, sangre, orina y fluido seminal) para la obtención de proteínas recombinantes. Cada animal y cada sistema cuenta con ventajas y desventajas, las cuales deben ser consideradas antes de comenzar el proceso productivo de la proteína de interés. Medicamentos como el ATryn®, el Ruconest® y el Kanuma® ya han sido aprobados por la FDA para la administración en humanos. El futuro de este tipo de preparados debe ser tomado en consideración, pues existen varias proteínas terapéuticas que se hallan en fase de investigación o a la espera de ser aprobadas y comercializadas.
Financial Knowledge, Confidence, Credit Use, and Financial Satisfaction
Authors: Atlas Stephen A. , Lu Jialing , Micu P. Dorin , Porto Nilton
Published: November 2019

This article investigates associations between confidence about financial knowledge and two outcome variables, financial behaviors and financial satisfaction. On one hand, subjective financial knowledge (confidence) is necessary to make proactive decisions, yet overconfidence has been associated with a range of negative financial behaviors and outcomes. Both types of objective and subjective knowledge may be related to critical financial behaviors and choices such as credit card usage which in turn may be associated with financial satisfaction, an important component of consumer well-being. This article analyzes data from the 2015 National Financial Capability Study to examine how financial knowledge confidence relates to credit card behaviors and financial satisfaction. We use mediation and floodlight analyses to uncover relevant relationships between variables of interest. We find evidence that confidence is associated with healthy credit card use that contributes to financial satisfaction. We also observe strong interactions with knowledge to find that confidence is more strongly associated with credit card use and overall financial satisfaction as knowledge increases. Findings from this study can help financial educators and advisors to deliver the right mix of financial knowledge to better financial choices and behaviors.
Reframing the Retirement Saving Challenge: Getting to a Sustainable Lifestyle Level
Authors: de Villiers Johann U. , Roux Elze-Mari
Published: November 2019

An increasing number of individuals will be unable to retire comfortably amidst an international retirement savings crisis. Research suggests that behavioral factors contribute to inadequate retirement savings. We present a procedure that reframes the retirement savings decision, aimed at alleviating some of the negative effects of the behavioral factors. This procedure shifts the focus from the required wealth at retirement (the future) to the lifestyle an individual can afford to maintain now (the present). A sustainable lifestyle level (SLL) approach is expressed mathematically and illustrated with practical examples. The SLL approach offers a practical tool for retirement planning professionals to present recommendations that are simple and easy to understand for individuals faced with complex retirement planning decisions.
Os novos discursos sobre arte, agora escritos pelos artistas
Authors: Queiroz João Paulo
Published: November 2019

A experiência do autor na concepção e organização, em Lisboa, de quatro congressos internacionais (os congressos CSO, ou «Criadores Sobre outras Obras») onde os artistas escrevem sobre as obras de outros artistas, e também na gestão de periódicos académicos correspondentes (“Estúdio,” “Gama,” “Croma”), permite questionar as mudanças no campo artístico, na atualidade. Em particular, observa-se o diferente posicionamento do artista com uma educação mais exigente, e uma prática mais interveniente, com o seu suporte incluindo o público, misturando a curadoria, e a programação cultural, dentro do contexto discursivo caraterizado pela emergência de novas disciplinas no campo académico.
Arte en las periferias del mundo
Authors: Blanco-Barrera Ramon
Published: November 2019

Este artículo reflexiona sobre la investigación y producción artística en torno a problemáticas específicas internacionales, focalizadas en la “colateralidad” de las sociedades y realizadas sobre el terreno a partir de la experiencia directa del propio autor.
Corpos Striped
Authors: Coutinho Rafael Scheibe
Published: November 2019

Estabelecendo uma relação simbiótica, entre a imanência do polvo junto ao corpo humano, instiga-se um diálogo sobre os desejos reprimidos em dicotomia às homologações estabelecidas pela sociedade. Nesse sentido, a partir de uma série de desenhos, desenvolvidos num processo de investigação em convergência com a Arte Lowbrow, pretendo trazer à tona algumas questões presentes no abissal, relacionando a imagem do polvo em seu diálogo com o imaginário.
VOID. Talhando a paisagem
Authors: Piteira Susana
Published: November 2019

No território formado pelo anticlinal de Estremoz, a paisagem gerada no contraste entre o seu carácter agrícola e o seu carácter industrial, associado à extração do mármore, proporciona um fértil campo de heterogénea reflexão/ação no domínio das artes. A partir deste contexto abordar-se-ão as relações da paisagem com a escultura e o território, focadas nas construções negativas, as pedreiras, enquanto site e os objetos escultóricos como possíveis no site, assim como outras práticas artísticas relativas ao lugar. Analisa-se também o palimpsesto que constitui a paisagem atual do anticlinal, nas suas múltiplas potencialidades e oportunidades artísticas, no presente e futuro. Esta abordagem, parte ainda de um olhar envolvido com o território em causa, numa coabitação constante e próxima, proporcionada pela prática da escultura, do habitar e da docência, da autora, registando o histórico de algumas ações, iniciadas há cerca de duas décadas, abrindo a discussão e reflexão sobre as problemáticas do território em questão no domínio da arte e da paisagem.
No labirinto de através
Authors: Leite Caroline Alciones de Oliveira
Published: November 2019

Este artigo se dedica à análise do uso da transparência e da cor na obra Através (1983-1989) do brasileiro Cildo Meireles. Para tanto, recorre-se a algumas obras do artista nas quais a cor e/ou a transparência se apresentam como questão, a partir de uma ideia de monocromia, em articulações atravessadas por uma perspectiva crítica.
Arte, design e estética relacional
Authors: Marcondes Renan
Published: November 2019

Artigo que se debruça sobre a arte relacional, conforme argumentada por Nicolas Bourriaud em seu livro Estética Relacional (2009) e escritos posteriores. Colocando a teoria do autor em contraponto aos recentes escritos do crítico de arte alemão Boris Groys, pretende-se problematizar brevemente a relação consensual entre arte e política reafirmada por Bourriaud ao longo das páginas de seu livro.
Noise Industrial Pollution: Health Vulnerabilities on Textile Industry Workers
Authors: Sumardiyono Sumardiyono , Wijayanti Reni , Hartono Hartono , Sutomo Adi Heru
Published: November 2019

A safe and comfortable human life could be achieved by controlling the work environment so that the release of energy that is harmful to human health can be avoided. Noise often arises from an uncontrolled work environment and currently, more than 600 million people are exposed worldwide. Increased cortisol levels were one indicator stress-inducing of the occurrence of health effects because the worker's body is exposed to noise. If left longer it could increase sugar levels and cause diabetes mellitus. This study aims to analyze the effect of noise exposure on increasing blood cortisol levels and blood sugar levels in garment workers. This type of research was an analytic survey with a cross-sectional design. The respondents were chosen by using a stratified random sampling method and the total amount of respondents with a mean difference formula. As many as 75 people became respondents after being counted using the mean difference formula and chosen by the stratified random sampling method. The data were analyzed using ANOVA and Pearson Correlation. The results showed that respondents who exposed to noise above the threshold limit value had higher average blood cortisol levels compared to other respondents (p<0,000). Furthermore, an increase in blood cortisol levels was also positively correlated with an increase in blood sugar levels (r=0,898; p=0,000). Therefore, workers must be disciplined in using personal protective equipment.
Correlation of Smoked Fish Physical Quality and Facilities of Hygiene Activity and Sanitation with the Existence of Escherichia coli Bacteria in Smoked Fish
Authors: Rohmatin Shofuro Setiyono Refri Fitria
Published: November 2019

Fish smoking industry is one of way of fish preservation so that fresh fish have long saving period and always in a good condition. The treatment of smoked fish that is still simple and not processed properly cause the occurence of bacteria in smoked fish product. Escherichia coli bacteria, if exists in food will cause society health problem. This research is to identify the relationship of smoked fish physical quality and facilities of hygiene activity and sanitation with the existence of Escherichia coli bacteria in smoked fish products. This research is analytical that used cross-sectional research period. The sampling technique used simple random sampling. The independent variables studied are smoked fish physical quality and facilities of hygiene and sanitation, while the dependent variable is the existence of Escherichia coli bacteria in smoked fish products. The primary data was processed through observation and questionnaire sheets. The measurement of Escherichia coli bacteria used Escherichia coli qualitative test at Health Laboratory Center Surabaya City. Based on  fisher’s exact test dand phi correlation coefficient, The smoked fish physical quality have  (p=0,003, Q=-0,644) and facilties of hygiene activity and sanitation have (p=0,001, Q=-0,730)  has a tight relationship to the emergence of Escherichia coli bacteria in smoked fish products.. The recomended that smoked fish traders and village officials to discuss on the relocation plan of the smoked home industry in permanent buildings and the handler should always maintain the cleanliness of product environment roast fresh fish until it is fully cooked and focus to the ways of marketing smoked fish.
Hygiene and Sanitation of Drinking Water Depot and Microbiology Quality of Drinking Water in Ngasem Primary Healthcare Area, Kediri, East Java
Authors: Ummah Muhimatul , Adriyani Retno
Published: November 2019

Air minum yang diproduksi oleh Depot Air Minum (DAM) merupakan alternatif pemenuhan kebutuhan air minum masyarakat. Kepraktisan dan harga yang relatif lebih murah jika dibandingkan dengan air minum dalam kemasan, menjadikan daya tarik tersendiri bagi masyarakat untuk mengkonsumsi air minum produksi DAM. Tujuan penelitian ini adalah untuk mendeskripsikan higiene penjamah, sanitasi DAM serta keberadaan E.Coli pada air minum produksi DAM di daerah peri-urban. Penelitian ini merupakan penelitian observasional dengan pendekatan potong-lintang. Sampel penelitian adalah seluruh DAM di wilayah kerja Puskesmas Ngasem, Kabupaten Kediri, Jawa Timur sebanyak 22 DAM. Pengumpulan data dilakukan melalui pengamatan menggunakan lembar observasi dan kuesioner terstruktur sebagai panduan wawancara. Dilakukan pemeriksaan laboratorium keberadaan E. Coli pada sampel air minum produksi DAM. Berdasarkan pengamatan, hanya terdapat 27,3% (6 dari 22) DAM memiliki kategori kondisi higiene penjamah yang baik, 63,6% (14 dari 22) DAM memiliki kategori kondisi sanitasi tempat yang baik, dan seluruh (22) DAM memiliki kategori kondisi sanitasi dan kelengkapan peralatan yang baik. Sebanyak 9,1% (2 dari 22) DAM, air minum produksinya terkontaminasi E.Coli. Disimpulkan bahwa kondisi higiene penjamah dan sanitasi tempat DAM perlu ditingkatkan. Disarankan agar pemilik DAM menyediakan fasilitas cuci tangan yang dilengkapi air mengalir dan sabun sehingga penjamah dapat selalu menjaga kebersihan dirinya. Peningkatan pengetahuan penjamah melalui kursus higiene sanitasi DAM juga perlu dilakukan.
NO2 and SO2 Exposure to Gas Station Workers Health Risk in Kendari City
Authors: Alchamdani Alchamdani
Published: November 2019

Gas station workers played an important role in providing fuel needs in the community for the transportation system to run smoothly. The higher motor vehicle user, the intensity of refueling also increases. They were at high risk of being exposed to hazardous pollutants from both vehicle emissions and fuel vapors. Although NO2 and SO2 had non-carcinogenic effects, they are still irritants that cause chronic airway disorders. This study aims to analyze the health risks experienced by gas station workers due to NO2 and SO2 exposure in Kendari City. This research was a Quantitative Descriptive study with Environmental Health Risk Method Analysis. The number of samples was 13 operators chosen with total sampling. Measurement of NO2 and SO2 concentrations were carried out in the morning, afternoon and evening. The results of this study showed the highest intake value obtained for NO2 (real-time) was 0.00635 mg/kg/day and SO2 (real-time) 0.00057 mg/kg/day. The highest risk level obtained for NO2 is 0,31775 (RQ<1) and SO2 0,00275 (RQ<1). The conclusion of this study is the quality of ambient air NO2 and SO2 at SPBU 74,931.10 is still safe and meets the National Ambient Air Quality Standard in a short time. But otherwise, it will be at high risk for health if the operator was exposed for a long time and continuously. It should be made an effort to monitor and control air pollution. As well as the policy of using Personal Protective Equipment to minimizing exposure to ambient pollutants.
The Association between Weather Variability and Dengue Hemorrhagic Fever in Tegal Regency
Authors: Arieskha Fitra Tresna Asih , Rahardjo Mursid , Joko Tri
Published: November 2019

Dengue Hemorrhagic Fever (DHF) was a vector-borne disease that spreads rapidly and could cause death. Weather changes and climate change indirectly affects the incidence of dengue hemorrhagic fever. Conducive tropical weather and climate elements such as rainfall, air temperature and air humidity that are supported by the existence of habitat for Aedes aegypti mosquito could increase the risk of dengue cases. The purpose of this study was to determine the relationship between weather variability and the incidence of DHF in Tegal Regency during the period of 2012-2018. The design of this study was ecological study whereas unit analysis of the study is at population level. The data obtained was analysed by using correlation test spearman to identify correlation of the moran index on weather variability and dengue morbidity rates. The results of variability analysis were rainfall (p = 0,879; r = 0,071), air temperature (p = 0,023; r = -0,821) and air humidity (p = 0,879; r = -0,071). It was showed that the significant risk factors for the incidence of DHF in Tegal Regency was air temperatures. The study concluded that Tegal Regency has weather variability conditions that have the potential to increase the chances of dengue fever therefore intervention such as mitigation are expected to stifle the pace of climate change, and adaptation are needed to facing future impacts that related to the eradication of DHF.
A Correlation Study : Levels of Butyrylcholinesterase and Paraoxonase 1 Activity amongst Shallot Farmworkers in Brebes Regency, Central Java, Indonesia
Authors: Suratman Suratman , Kuswanto Kuswanto , Widiyanto Agnes Fitria
Published: November 2019

Organophosphate insecticides (OPs) are one of the pesticides commonly used in agricultural activities either to eradicate or to protect crops from insect attacks. Aside from the advantages proposed, this OPs substance also brings some worrisome threats for individual and population. Shallot farmworkers in Brebes Regency are population at risk to OPs exposure. The activity levels of Butyrylcholinesterase (BuChE) and paraoxonase 1 (PON1) in blood play important roles as a biomarker of exposure as well to measure the occurrence of OPs exposure in a human body and as a biomarker of susceptibility as well to measure the level of detoxifying OPs. The aim of this study was to analyse the correlation between levels of BuChE and PON1 activities amongst shallot farmworkers. A cross-sectional study was conducted on 88 male subjects selected randomly from Dukuhlo Village in Brebes Regency, Indonesia, occupationally exposed to OPs from April to May 2017. Using a structured questionnaire, a survey was carried out based on sociodemographic characteristics. Blood samples were collected to determine the levels of BuChE and PON1 activity. These samples were then analysed at laboratories of Cito in Tegal and Gaky, Undip in Semarang. Furthermore, data were analysed systematically using univariate and bivariate (a Spearman’s Rank test). A significant correlation was found between these both variables (p=0.025 and rho=0.238) with slightly moderate positive relationship. To sum up, farmworkers with higher PON1 activity may have a better chance of detoxifying the acute effect of OPs exposure. A further research is needed to identify correlation between PON1 activity, levels of thyroid hormones, and OPs metabolites in urine.
Non-Scientific University Students Training in General Science Using an Active-Learning Merged Pedagogy: Gamification in a Flipped Classroom
Authors: Zamora-Polo Francisco , Corrales-Serrano Mario , Sánchez-Martín Jesús , Espejo-Antúnez Luis
Published: November 2019

Innovative teaching strategies are designing a new and promising landscape in education. They fill up the lessons with creativity and imagination either for the students and teachers. This article addresses an attempt to make easier the approach to science in a non-scientific environment: primary education at university level. Gamification methodologies were combined with flipped classroom in order to free up in-class time and engage the students with the taught courses. A qualitative study was merged with quantitative measures of emotional and motivational parameters. These results were improved with four semi-structured interviews. The results clearly showed a raise in the students' motivational level, an acknowledgment of good teaching practice and an evident enhancement of felt positive emotions toward science teaching and scientific issues.
Changes in the Fish Community of a Western Caribbean Estuary after the Expansion of an Artificial Channel to the Sea
Authors: Schmitter-Soto Juan Jacobo , Herrera-Pavón Roberto Luis
Published: November 2019

Increased connectivity between coastal lagoons and the sea is expected to entail a greater proportion of marine species in the former. Chetumal Bay, estuary of the Hondo river into the Caribbean, had a limited access to the sea until the opening of the Zaragoza Canal. We sought changes in the fish community from 1999-2001 (just after an expansion of the canal) to 2015-2018. The same fishing gear was used, in the same localities, during all seasons. Total fish abundance and mean local richness decreased, although total abundance increased in the polyhaline zone. Diversity was greater in the oligohaline zone in 1999-2001, but in the mesohaline zone in 2015-2018. Three guilds were absent in 2015-2018: medium-sized herbivores, large piscivores, and medium-sized planktivores. Abundance of small benthivores decreased by decade; medium-sized piscivores and small planktivores became more abundant in 2015-2018 in the polyhaline zone. These changes may be due to the opening of the channel, but illegal fishing outside the bay may explain the decrease in juveniles of large piscivores, and erosion in the innermost part may be destroying important habitats. Our findings can be a reference for similar situations, as coastal development and climate change interact and affect tropical estuaries.
Colorimetric Technique for Antimony Detection Based on the Use of Gold Nanoparticles Conjugated with Poly-A Oligonucleotide
Authors: Berlina Anna N. , Komova Nadezhda S. , Zherdev Anatoly V. , Gaur Mulayam S. , Dzantiev Boris B.
Published: November 2019

A simple and rapid positive–negative colorimetric approach to determine the presence of antimony ions based on the use of gold nanoparticles conjugated with oligonucleotide (poly-A sequence) is developed. Colorimetric measurements reveal that the aggregates of modified gold nanoparticles were afforded after adding antimony ions, thus changing the solution color from pink to blue. The results of aptamer’s interaction on the gold nanoparticle surface with target analyte can be detected either by photometry or by the naked eye. The realized assay provides rapid (2 min), sensitive (detection limit 10 ng/mL), specific, and precise (variation coefficient less than 3.8%) detection of antimony (III) in drinking water
Natural Convection Numeric Simulation on Metal Freezing Using Differential Method
Authors: Suprianto Heri , Budiana Eko Prasetyo , Widodo Purwadi Joko
Published: November 2019

The research of modeling of natural convection in metal solidification process with finite different method was conducted to determine temperature distribution and fluid flow profil with variations value Rayleigh number. The research conducted by solving governing equation of natural convection with finite difference approximation. Governing equation of natural convection consist of continuity equation, momentum equations, and energy equation. The ADI (Alternating Directional Implicit) method was used to discriteze for governing equation of natural convection. Finite difference method was written in Fortran language whereas the temperature distribution and fluid flow profile were visualized with Matlab software. The results of this research was validated by comparing the results obtained with Rajiv Sampath research. Comparison of the results of research showed good agreement. The result showed that solidification process occurs faster at Ra 10^4 compared with 10^5 and 10^6
Fiber Weight Fraction Effect to Acoustic Properties of RHDPE Cantula Composite
Authors: Hendrowarsito Muhammad Taufik Burhany , Raharjo Wijang Wisnu , Himawanto Dwi Aries
Published: November 2019

In this study, composites made from recycled HDPE and Cantula fiber have been done and the absorption coefficient have been measured. Composites rHDPE-Cantula were made using hot press for approximately 60 minutes with 170oC temperature while pressure exerted by 50 bar. In this study the weight ratio of Cantula fiber was varied 40%, 50%, 60%, and 70%. Impedance Tube Method was used to measure the sound absorption coefficient in accordance with ASTM E 1050. An increase weight ratio wasn’t influence the sound absorption coefficient significantly, but the optimum sound absorption coefficient shifted to the higher frequencies from 80-200 Hz. An increase weight ratio showed better sound absorption coefficient from 500-1600 Hz, but the result from 60% weight ratio showed low sound absorption coefficient that may caused by it high density leading to the reduction of porosity. This result was supported by density measurement in accordance with ASTM D 792, which the result showed that the sound absorption coefficient increase with decreasing of the density.
Lontarak; Sumber Belajar Sejarah Lokal Sulawesi Selatan
Authors: Bahri Bahri , Riang Tati Andi Dewi
Published: November 2019

Lontarak is a text that contains various aspects of Bugis culture from ancient times to the present. The function of lontarak is to inherit cultural customs in their original form. Lontarak is one of the mediums that has survived the inheritance of culture in its authenticity. Lontarak, consisting of various types which have contents of a pappangajak or message related to various fields of life. Lontarak is a source of learning history because it contains historical events that have values that can be integrated in various lives. The recommendation of this study is that Lontarak can be used as a source of learning for the people of South Sulawesi at all levels of education.

Lontarak adalah naskah yang memuat berbagai aspek kebudayaan Bugis sejak zaman dahulu sampai sekarang. Lontarak berfungsi mewariskan adat kebudayaan dalam bentuk asli. Lontarak salah satu media yang bertahan mewariskan kebudayaan dalam keasliannya. Lontarak, terdiri dari berbagai jenis dan isi Lontarak adalah pappangajak atau pesan yang terkait dengan berbagai bidang kehidupan. Lontarak merupakan sumber belajar sejarah karena berisi tentang peristiwa sejarah yang memiliki nilai-nilai yang dapat diintegrasikan dalam berbagai kehidupan. Rekomendasi dari penelitian ini adalah lontarak dapat dijadikan sumber belajar bagi masyarakat Sulawesi Selatan pada semua jenjang pendidikan.
Dinamika Pelajaran Sejarah Indonesia dalam Kurikulum 2013 pada Jenjang SMK/MAK
Authors: Pratama Rinaldo Adi , Maskun  , Lestari Nur Indah
Published: November 2019

This study aims to explain the dynamics of Indonesian History subject in the 2013 Curriculum at Vocational High School. Implementation of the 2013 Curriculum, the Indonesian History subject had a special place at the Vocational High School level. But, revision of 2013 Curriculum effected on the existence of Indonesian History subject in Vocational High School. This study used a library research method that used library resources in research without field research. The results showed that Indonesian History subject at the beginning of the 2013 Curriculum implementation got allocation 216 hours for six semester in 10th, 11th, and 12th grade. Decreased to 144 hours for four semester in 10th and 11th grade after revised in 2016, and decreased again to 108 hours of time allocation for two semester only in 10th grade in 2017 and changing nomenclature from Indonesian History become History.
 
Tulisan ini bertujuan untuk memaparkan mengenai dinamika pelajaran Sejarah Indonesia dalam Kurikulum 2013 di jenjang SMK/MAK. Seperti diketahui bahwasanya awal penerapan Kurikulum 2013, Sejarah Indonesia mendapatkan tempat istimewa pada jenjang SMK/MAK, namun seiring perkembangan waktu, terjadi revisi yang dilakukan terhadap Kurikulum 2013 yang berdampak pada keberadaan mata pelajaran Sejarah Indonesia yang semakin berkurang jumlah jamnya. Penelitian ini menggunakan metode historis yang mencakup heuristik, kritik, interpretasi dan historiografi. Hasil penelitian menunjukan bahwa Sejarah Indonesia pada awal penerapan Kurikulum 2013 mendapatkan alokasi waktu 216 jam pelajaran, semakin berkurang menjadi 144 jam pelajaran setelah terjadi revisi kurikulum pada 2016 dan semakin berkurang lagi menjadi 108 jam pelajaran serta perubahan komenklatur dari Sejarah Indonesia menjadi sejarah setelah perbaikan struktur kurikulum untuk SMK/MAK pada tahun 2017.
Predictive Risk Factors of Pleural Tuberculoma Occurrence on Patients with Pleural Tuberculosis
Authors: Dong Zhengwei , Zhang Wei , Wu Chunyan , Fan Lin
Published: November 2019

Background: Pleural tuberculoma (PTM) had been observed more and more frequently on patients with pleural tuberculosis (PT). The occurrence of PTM is not favorable for the treatment outcome of PT. However, its predictive risk factors had not been clarified. This study was to explore the predictive risk factors of PTM occurrence on the patients with PT. Methods: From January 2017 to June 2018, patients diagnosed as PT were enrolled prospectively into the study. All clinical characteristics and pleural changes during the chemotherapy were recorded and adenosine aminase (ADA)、 lactate dehydrogenase (LDH)、glucose and protein of pleural fluid were quantified. Interferon-gamma (IFN- γ)、 transforming growth factor -beta (TGF-β), plasminogen activator inhibitor type-1 (PAI-1) and tissue plasminogen activator (t-PA) of pleural fluid were tested before chemotherapy by enzyme-linked immunosorbent assay (ELISA). Results: A total of 162 patients with PT were enrolled. 82 patients (51.3%, 82/162) developed PTM during chemotherapy. We found the probability of PT to develop PTM reached 99.5% when the patients with pleural thickness, packaged plural effusion, LDH>461.5 IU/L , ADA>62.9 IU/L , GLU<4.75 mmol/L and age>32.5 years old. The probability to develop PTM was as low as 1.4% when these 6 indices were in the opposite trend to the conditions list above. Using tested cytokines in pleural fluid from 76 cases, the probability of PTM if patients satisfied 3 indexes including increased TGF-β(>15.235 μ g/L) , increased PAI-1(>180.720 μ g/L) and decreased t-PA(<2.875 μ g/L ) was 78%, and the probability to develop PTM was only as low as 2.7% when these 3 cytokines were in the opposite trend. Conclusions: Age, pleural thickness, packaged pleural fluid, increased ADA, LDH, TGF-β, PAI-1 and decreased glucose and t-PA might be predictive risk factors of developing PTM for patients with PT, clinicians should take deep consideration if patients had above factors.
Associations between high intensity zones, Modic and endplate changes in lumbar spine of low back pain patients
Authors: Lagerstrand Kerstin , Brisby Helena , Hebelka Hanna
Published: November 2019

Background High intensity zones (HIZ), Modic and endplate changes have all been pointed out as potential markers of low back pain (LBP). If an association between these morphological features exist, it may not only deepen the understanding of the underlying patho-physiological mechanism of LBP but may also improve the diagnostics by enabling stratification between individuals with non-specific LBP as well as within individuals having multi-segmental changes. The aim was to investigate if HIZ, Modic and endplate changes are associated and if endplate and vertebral T2-values reflect functional tissue characteristics related to these morphological features.Methods 150 IVDs with corresponding endplates and vertebrae in 26 chronic LBP-patients (25-69y, mean 38y, 11 males) were examined with T1- and T2-weighted MRI, and T2-mapping. Associations between morphological features and between morphological features and functional T2-values were determined. Results HIZ (62% of patients, 1-2/patient) was associated with endplate changes (100% of patients, 1-7/patient) (p=0.0003 and 0.0004 for upper and lower endplates), with an occurrence of 91% for upper and 71% for lower endplates adjacent to discs with HIZ. Modic changes (81% of patients, 1-3/patient) was associated with endplate changes (p<0.0001) with an occurrence of 87% for endplates adjacent to vertebrae with Modic changes. The occurrence of both HIZ and Modic changes was 43% (p=0.0001) for upper and 29% (p=0.003) for lower vertebrae. Significantly higher T2-values (p<0.004) were found in the vertebral tissue with associated Modic changes and HIZ. Conclusions This study of LBP-patients suggests that HIZ is associated with simultaneous presence of both Modic and endplate changes in the same motion segment. If these three simultaneous morphological features are linked to an active inflammatory process, reflected as a clinical specific pain profile remains to be investigated.
Delayed Arterial Switch Operation in a Three Year Old Child with Transposition Of Great Arteries
Authors: Solğun Huseyin Avni , Gojayev Farid
Published: November 2019

Background: The incidence of transposition of the great arteries (TGA) is 0.5-1% of all congenital heart diseases. The aorta and pulmonary arteries exit inversely from the heart ventricles. In addition, 25% of TGA patients have ventricular septal defect (VSD). Some infants may have left ventricular outflow tract obstruction. Arterial switch (Jaten) operation is the accepted procedure for the treatment of TGA. Case report: The patient had congenital severe cyanosis and was diagnosed as TGA, VSD and ASD after a pediatric cardiology examination. The patient went to follow-up for a short time and did not go to follow-up and admitted to our institute with complaints of severe cyanosis and decreased exercise capacity at the age of 34 months. According to echocardiography and angiography findings, arterial switch operation (AS) was planned for treatment despite delayed treatment.Conclusion: In general; it is preferable to perform AS in the first month of life in patients with TGA. There is very rare information in the literature about the preferability of early childhood patients. In the light of this information, we present a case of successful atrial switch operation in a three-year-old patient.
Prevalence of Group B Streptococcus Colonization in Pregnant Women in Jiangsu, East China
Authors: Wang Rui , Qiu Hongmei , Yanmei Ge , Pan Fei , Bian Shuhui
Published: November 2019

Background : Group B streptococcus (GBS) is the leading cause of early-onset neonatal sepsis. This study assessed the prevalence of GBS colonization among pregnant women in Jiangsu, East China. Methods: A total of 16,184 pregnant women at 34 to 37 weeks , gestation aged 16–47 years were recruited from Nanjing Kingmed Diagnostics, including 9022 pregnant women who received GBS screening by PCR detection and 7162 by bacterial culture, antimicrobial susceptibility testing was performed on GBS positive samples. Results: The overall GBS prevalence was 8.7% for pregnant women studied by PCR and 3.5% by culture. The 25-29 age group had the highest rate of GBS colonization in the pregnant women. The prevalence of resistance to erythromycin, clindamycin and levofloxacin was 77.5%, 68.3% and 52.2%, respectively. Conclusions: This study revealed the prevalence characteristics of GBS in pregnant women and the difference of GBS colonization between culture and PCR in Jiangsu province.
Investigation of the Dynamic Regulation Mechanisms of Small Non-Coding RNA in Response to Drought Stress in Qingke Barley
Authors: Zha Sang , Gyalpo Thondup , Zeng Xingquan , Yuan Hongjun , Yu Mingzhai , Xu Qijun , Wang Yulin , Yang Chunbao , Wang Mu , Yang Haizhen , Basang Yuzhen
Published: November 2019

Background Drought is a common abiotic stressor that exerts a great influence on grain security worldwide. The mechanisms underlying the small non-coding RNA regulation of plant drought responses remain unclear.Results In this study, drought-resistant (Xila-16, Xila) and drought-sensitive (DingqingHYG, Diqing) ecotypes were selected. A systematic analysis was performed on the microRNAs and tRNA-derived fragments in small RNA sequencing data. By predicting the target genes of differentially expressed miRNAs and analysing their pathway, this study identified HVUL2H01030.2, HVUL2H06276.2, HVUL2H00175.2 and other important target genes. The analysis also identified base excision repair and other adversity stress-related pathways. tRNA-derived fragments (tRFs), as a novel type of small noncoding RNA, exist widely in organisms, but no study has shown that tRFs play a role in the drought resistance of qingke barley. Based on systematic identification and characteristic analysis of tRFs in small RNA sequencing data, this study found that qingke barley had a tendency to produce more tRFs under drought stress. These tRFs were widely expressed, showed specific tRNA cleavage modes and had conservative intertreatment cleavage and other characteristics.Conclusions Our findings lay the foundation for further investigation of the action mechanism of such novel small noncoding RNAs in the drought resistance of qingke barley.