bluuebunny/crossref_metadata_2025 huggingface dataset:
Nanocomposite Graphene based Tunable Absorber for Combating Electromagnetic Pollution
Authors: Rani Surekha , Marwaha Anupma , Marwaha Sanjay
Published: December 2019

Background:

Advancement in wireless communication technology has raised today’s
living standards but has consequently led to the problems of electromagnetic (EM) air pollution as
well as spectrum congestion particularly in radio frequency band. To overcome the traffic congestion
problem in lower bands, terahertz frequency bands are explored but EM pollution still persists as a
global issue, which can be addressed by a tunable microwave absorber. At THz frequencies, 2-D
nanostructured graphene has been observed to be less lossy than using other materials and further
finds its most interesting applications on account of the plasmonic mode supported by graphene resulting
in extreme device miniaturization. At micro and mm-waves, graphene is resistive, hence it
can be electronically controlled, ensuring its suitability for the design of tunable microwave absorber.

Objective:

Designing of a frequency reconfigurable or frequency tunable absorber is the prime objective
of the current work. Two-dimensional graphene absorber has been proposed here having inherent
bandgap tunability property, which means the electromagnetic properties of graphene can be
controlled via varying external bias potential.

Methods:

The numerical modelling of graphene microwave absorber utilizing bulk graphene backed
by glass and perfect electric conductor layer is reported in this paper. Finite element Method (FEM)
based high frequency structure simulator (HFSS) platform is used to simulate the graphene absorber
model. The whole structure is placed into a rectangular waveguide with two ports for absorber excitation.

Results:

The variation of electromagnetic properties of graphene absorber is achieved by changing
bias potential and further the absorption tunability for the designed absorber is investigated in the
range from 2 GHz to 18 GHz. From reflection coefficient curves, it is authenticated that -72.6 dB
reflection coefficient dip is obtained at 14 GHz for 5 volt bias potential, which shifts to higher side of
frequency as the potential changes from 5 volts to 25 volts.

Conclusion:

The results show that by increasing bias potential, absorption coefficient shifts to higher
frequency and proves to be a tunable wideband absorber whose resonant frequency can be changed
from one value to another without changing thickness or material properties of absorber, thus it can
effectively incorporate with antenna substrate or surface of radar.
A Novel Hybrid Solar-wind Energy Conversion System for Remote Area Electrification
Authors: Gupta Shailendra K. , Srivastava Rakesh K.
Published: December 2019

Background:

Remote area electrification is a social responsibility that needs to be catered
by research fraternity. One of the most viable technology as a solution is the Renewable Energy
Source (RES) based power generation. However, RES is intermittent and thus, mostly ineffective
without an energy storage device. Energy storage device comes at increased cost and may not
be a cost-effective solution to the problem.

Introduction:

One solution that has been frequently proposed to reduce the intermittency of RES is
hybridization. Hybridization of RES such as Wind Energy Conversion System (WECS) with Solar
Energy Conversion System (SECS) is the most basic solution offered owing to their complementary
nature. Therefore, this paper sees SECS in the role of supporting WECS in regions with highly
intermittent wind conditions. In this paper, a novel technique of hybridization of WECS with SECS
has been proposed.

Methods:

The basic idea of the paper is to control the dc-link voltage from the generation side by
regulating the power generated by RES as per load demand using minimum components. The underlined
principle is the relative lower time constant of solar panel and battery system in comparison
to a wind turbine.

Results:

The experimental results on the proposed system shows that the SECS supports the WECS
at higher wind turbulence and low wind conditions.

Conclusion:

This unique feature of the proposed system enables a WECS supported by a small rated
SECS to attain high power reliability and thus, suitable for application such as remote area electrification.
YOLOv3-Tesseract Model for Improved Intelligent form Recognition
Authors: Yun-An Zhang , Ziheng Pan , Hongyan Dui , Guanghan Bai
Published: December 2019

Background:

YOLOv3-Tesseract is widely used for the intelligent form recognition because
it exhibits several attractive properties. It is important to improve the accuracy and efficiency
of the optical character recognition.

Methods:

The YOLOv3 exhibits the classification advantages for the object detection. Tesseract can
effectively recognize regular characters in the field of the optical character recognition. In this study,
a YOLOv3 and Tesseract-based model of improved intelligent form recognition is proposed.

Results:

First, YOLOv3 is trained to detect the position of the text in the table and to subsequently
segment text blocks. Second, Tesseract is used to individually detect text blocks and combine
YOLOv3 and Tesseract to achieve the goal of table character recognition.

Conclusion:

Based on the Tianchi big data, experimental simulation is used to demonstrate the proposed
method. The YOLOv3-Tesseract model is trained and tested to effectively accomplish the
recognition task.
MODEL TES KETERAMPILAN DASAR FUTSAL BAGI PEMAIN KU 10-12 TAHUN
Authors: Wijayanti Dian Ika Purba Ratna , Kushartanti B. M. Wara
Published: December 2019

Penelitian ini bertujuan untuk menghasilkan model tes keterampilan dasar futsal bagi pemain KU 10-12 tahun. Model tes disesuaikan dengan perkembangan dan karakteristik anak pada usia 10-12 tahun. Penelitian ini merupakan penelitian dan pengembangan yang dilakukan dengan langkah-langkah penelitian pengembangan sebagai berikut: (1) pengumpulan informasi di lapangan, (2) melakukan analisis terhadap informasi yang telah dikumpulkan, (3) mengembangkan produk awal (draft model), (4) validasi ahli dan revisi, (5) uji coba lapangan skala kecil dan revisi, (6) uji coba lapangan skala besar dan revisi, dan (7) pembuatan produk final. Subjek penelitian ini adalah pemain futsal kelompok usia 10-12 tahun. Uji coba skala kecil dilakukan terhadap siswa SD Muhammadiyah Sapen Yogyakarta yang mengikuti ekstrakurikuler futsal dengan jumlah 10 siswa. Uji coba skala besar dilakukan terhadap siswa SD Syuhada dan SD Negeri Lempuyangan yang mengikuti ekstrakurikuler futsal sebanyak 20 siswa. Instrumen pengumpulan data yang digunakan yaitu; (1) lembar wawancara, (2) skala nilai, (3) lembar observasi pelaksanaan dan keefektifan tes, serta (5) lembar data hasil tes. Teknik analisis data yang dilakukan yaitu analisis deskriptif kuantitatif dan analisis deskriptif kualitatif. Hasil penelitian ini yaitu tes keterampilan dasar futsal bagi pemain KU 10-12 tahun yang dituangkan dalam buku panduan tes keterampilan dasar futsal bagi pemain KU 10-12 tahun. Uji validitas instrumen tes ditunjukkan dengan rata-rata nilai koefisien korelasi sebesar sebesar 0,765, sehingga instrumen tes dikatakan valid. Uji reliabilitas tes untuk item shooting ditunjukkan dengan nilai koefisien korelasi sebesar 0,815, item waktu sebesar 0,946, dan item total sebesar 0,943, sehingga secara keseluruhan menunjukkan hasil yang reliabel. Dari hasil penilaian para ahli materi, dapat ditarik kesimpulan bahwa model tes yang disusun sangat sesuai dengan karakteristik pemain KU 10-12 tahun, sehingga model tes layak digunakan. Kata kunci: tes keterampilan dasar, futsal, karakteristik pemain KU 10-12 tahun
PERBEDAAN PENGARUH CIRCUIT TRAINING DAN FARTLEK TRAINING TERHADAP PENINGKATAN VO2MAX DAN INDEKS MASSA TUBUH
Authors: Almy Muh. Akmal , Sukadiyanto Sukadiyanto
Published: December 2019

Penelitian ini bertujuan untuk mengetahui: (1) metode circuit training lebih efektif daripada metode fartlek training dalam meningkatkan VO2Max pada pemain sepakbola (2) Indeks Massa Tubuh (IMT) rendah lebih baik/bagus daripada Indeks Massa Tubuh (IMT) tinggi terhadap peningkatan VO2 Max pemain sepakbola, (3) Ada kecenderungan interaksi antar kedua kelompok latihan dan Indeks Massa Tubuh (IMT) terhadap peningkatan VO2Max. Penelitian ini merupakan penelitian eksperimen dengan rancangan faktorial 2 x 2. Instrumen dalam penelitian ini adalah Multistage Test dan IMT. Hasil penelitian adalah sebagai berikut. (1) terdapat perbedaan pengaruh yang signifikan antara metode circuit training dan metode fartlek training terhadap peningkatan VO2Max pemain sepakbola SSB Putratama Bantul dan SSB Baturetno Bantul usia 16-17 tahun, terbukti dari nilai p = 0.020 < 0.05. (2) terdapat perbedaan pengaruh yang signifikan antara Indeks Massa Tubuh (IMT) rendah dan Indeks Massa Tubuh (IMT) tinggi terhadap peningkatan VO2Max pemain sepakbola SSB Putratama Bantul dan SSB Baturetno Bantul usia 16-17 tahun, terbukti dari nilai p = 0.080 < 0.05. (3) Terdapat interaksi yang signifikan antara kedua kelompok latihan dan Indeks Massa Tubuh (IMT) terhadap peningkatan VO2Max, terbukti dari nilai p = 0.000 < 0.05. Jadi dapat disimpulkan bahwa: (a) Metode circuit training lebih efektif meningkatkan VO2Max untuk pemain sepakbola yang mempunyai IMT rendah, (b) Metode fartlek training lebih efektif meningkatkan VO2Max untuk pemain sepakbola yang mempunyai IMT tinggi. Kata kunci: Circuit training, fartlek training, VO2Max, IMT, sepakbola.
Evaluating a Theoretically Informed and Cocreated Mobile Health Educational Intervention for First-Time Hearing Aid Users: Qualitative Interview Study (Preprint)
Authors: Maidment David W , Heyes Rachel , Gomez Rachel , Coulson Neil S , Wharrad Heather , Ferguson Melanie A
Published: December 2019

BACKGROUND

Adults living with hearing loss have highly variable knowledge of hearing aids, resulting in suboptimal use or nonuse. This issue can be addressed by the provision of high-quality educational resources.

OBJECTIVE

This study aims to assess the everyday experiences of first-time hearing aid users when using a newly developed, theoretically informed cocreated mobile health (mHealth) educational intervention called m2Hear. This intervention aims to deliver greater opportunities for individualization and interactivity compared with our previously developed multimedia intervention, C2Hear.

METHODS

A total of 16 first-time hearing aid users trialed m2Hear for a period of 10-weeks in their everyday lives, after which individual semistructured interviews were completed. The data were analyzed using an established deductive thematic analysis procedure underpinned by the Capability, Opportunity, Motivation-Behavior model. The model stipulates that to engage in a target behavior, an individual must have physical and psychological capability, physical and social opportunity, and automatic and reflective motivation.

RESULTS

Capability—m2Hear was viewed as a concise and comprehensive resource, suitable for a range of digital literacy skills. It was stated that m2Hear could be conveniently reused to provide useful reminders that facilitate knowledge of hearing aids and communication. Opportunity—m2Hear was simple and straightforward to use, enabling greater individualization and independence. The availability of m2Hear via mobile technologies also improved accessibility. Motivation—m2Hear provided greater support and reassurance, improving confidence and empowering users to self-manage their hearing loss.

CONCLUSIONS

Overall, this qualitative study suggests that m2Hear supports first-time hearing aid users to successfully self-manage their hearing loss postfitting. Furthermore, this study demonstrates the utility of employing a combined theoretical and ecologically valid approach in the development of mHealth educational resources to meet the individual self-management needs of adults living with hearing loss.

CLINICALTRIAL

ClinicalTrials.gov NCT03136718; https://clinicaltrials.gov/ct2/show/NCT03136718
User Perceptions of Different Electronic Cigarette Flavors on Social Media: Observational Study (Preprint)
Authors: Lu Xinyi , Chen Long , Yuan Jianbo , Luo Joyce , Luo Jiebo , Xie Zidian , Li Dongmei
Published: December 2019

BACKGROUND

The number of electronic cigarette (e-cigarette) users has been increasing rapidly in recent years, especially among youth and young adults. More e-cigarette products have become available, including e-liquids with various brands and flavors. Various e-liquid flavors have been frequently discussed by e-cigarette users on social media.

OBJECTIVE

This study aimed to examine the longitudinal prevalence of mentions of electronic cigarette liquid (e-liquid) flavors and user perceptions on social media.

METHODS

We applied a data-driven approach to analyze the trends and macro-level user sentiments of different e-cigarette flavors on social media. With data collected from web-based stores, e-liquid flavors were classified into categories in a flavor hierarchy based on their ingredients. The e-cigarette–related posts were collected from social media platforms, including Reddit and Twitter, using e-cigarette–related keywords. The temporal trend of mentions of e-liquid flavor categories was compiled using Reddit data from January 2013 to April 2019. Twitter data were analyzed using a sentiment analysis from May to August 2019 to explore the opinions of e-cigarette users toward each flavor category.

RESULTS

More than 1000 e-liquid flavors were classified into 7 major flavor categories. The fruit and sweets categories were the 2 most frequently discussed e-liquid flavors on Reddit, contributing to approximately 58% and 15%, respectively, of all flavor-related posts. We showed that mentions of the fruit flavor category had a steady overall upward trend compared with other flavor categories that did not show much change over time. Results from the sentiment analysis demonstrated that most e-liquid flavor categories had significant positive sentiments, except for the beverage and tobacco categories.

CONCLUSIONS

The most updated information about the popular e-liquid flavors mentioned on social media was investigated, which showed that the prevalence of mentions of e-liquid flavors and user perceptions on social media were different. Fruit was the most frequently discussed flavor category on social media. Our study provides valuable information for future regulation of flavored e-cigarettes.
Prescribing Behavior Change: Opportunities and Challenges for Clinicians to Embrace Digital and Mobile Health (Preprint)
Authors: Agarwal Anish , Patel Mitesh
Published: December 2019

UNSTRUCTURED

Individual behaviors impact physical and mental health. Everyday behaviors such as physical activity, diet, sleep, and tobacco use have been associated with a range of acute and chronic medical conditions. Educating, motivating, and promoting sustained healthy behaviors can be challenging for clinical providers attempting to manage their patients’ health. The ubiquity and integration of mobile and digital health devices (eg, wearable step counters, smartphone-based apps) allow for individuals to generate and record enormous amounts of patient-generated health data. Research studies have begun to reveal how mobile and digital devices offer promise in motivating individual behavior change but they have not had consistent results. In this viewpoint, we discuss the potential synergy of digital health modalities and behavioral strategies as an approach for clinicians to prescribe, motivate, monitor, and sustain healthy behaviors. We discuss the strengths, challenges, and opportunities for the future of promoting health behaviors.
Dietary Intake Nutritional Status and Lifestyle of Adolescent Vegetarian and Nonvegetarian Girls in New Zealand (The SuNDiAL Project): Protocol for a Clustered, Cross-Sectional Survey (Preprint)
Authors: Peddie Meredith , Ranasinghe Chaya , Scott Tessa , Heath Anne-Louise , Horwath Caroline , Gibson Rosalind , Brown Rachel , Houghton Lisa , Haszard Jillian
Published: December 2019

BACKGROUND

Anecdotally, vegetarian eating patterns seem to be increasing in parallel with growing concerns about environmental sustainability. While this pattern of eating is widely believed to be associated with benefits for the planet and individual health, it may increase the risk of inadequate intakes and nutrient deficiency if not planned carefully. Adolescent girls may be particularly at risk, as they have increased requirements for nutrients such as iron, zinc, calcium, and vitamin B12 during growth and development.

OBJECTIVE

The objective of the SuNDiAL Project (Survey of Nutrition, Dietary Assessment, and Lifestyles) is to compare the dietary intakes and habits, nutrition status, motivations, attitudes, and physical activity of a sample of vegetarian and nonvegetarian adolescent girls in New Zealand.

METHODS

A clustered, cross-sectional, nationwide study of adolescents aged 15-18 years was conducted. Secondary schools were recruited throughout New Zealand, and pupils (n=290) were invited to participate in data collection in either the first (February to April) or third (August to October) school term of 2019 (New Zealand schools operate on a 4-term year). Sociodemographic and health information; vegetarian status; dietary habits; and attitudes, motivations, and beliefs regarding food choices were assessed via an online self-administered questionnaire. Dietary intakes were collected via two 24-hour diet recalls on nonconsecutive days and will be adjusted for within-person variation using the Multiple Source Method, to represent usual intakes. Nutrient adequacy will be assessed by the estimated average requirement cut-point method or probability approach as appropriate. Height and weight were measured, and blood and urine samples collected for micronutrient status assessment. Participants wore an accelerometer for 7 days to assess 24-hour activity patterns (time spent asleep, sedentary, or engagement in light-intensity or moderate-to-vigorous intensity physical activity).

RESULTS

Recruitment and data collection were conducted in 2019. Data are currently being cleaned and analyzed, with publication of the main results anticipated at the end of 2020.

CONCLUSIONS

The SuNDiAL Project will provide a meaningful and timely description of diet, nutrition status, and motivational factors associated with vegetarianism and identify any risks this pattern of eating may pose for female adolescents. The results of this study will support the development of targeted recommendations and interventions aimed at enhancing the health, growth, and development of adolescent girls.

CLINICALTRIAL

Australian New Zealand Clinical Trials Registry ACTRN12619000290190; https://tinyurl.com/yaumh278

INTERNATIONAL REGISTERED REPORT

DERR1-10.2196/17310
Psychological Well-Being, Gender Ideology, dan Waktu sebagai Prediktor Keterlibatan Ayah
Authors: Dannisworo Cantyo Atindriyo , Amalia Fadhilah
Published: December 2019

This study aimed to examine the role of psychological well-being, gender ideology, time spent together with children, and time spent at work in predicting father involvement. This study was conducted on fathers with at least one child aged 0-12 years old, who resided in Jakarta, Bogor, Depok, Tangerang, Bekasi (Jabodetabek). Data was collected from 371 fathers through online questionnaires. Results from multiple regression analysis suggest that psychological well-being (β = 0.322; p < 0.01), gender ideology (β =0.104; p < 0.05), and time spent with children (β = 0.126; p < 0.05) significantly predicted father involvement (R 2 = 0.145). Time spent at work (β = 0.014) however, did not predict father involvement. Though, there are other factors that need to be considered when we are going to predict father involvement, such as father’s factors, mother’s factors, child’s factors, and contextual factors.
¿Abandona Leibniz la concepción del espacio como lugar universal de las cosas después de 1671? Observaciones críticas al artículo de Federico Raffo Quintana
Authors: Silva Camilo
Published: December 2019

En la siguiente discusión presento algunas objeciones al artículo de Federico Raffo Quintana “La noción de ‘espacio’ en los escritos juveniles de Leibniz” (Diánoia, vol. 62, no. 78, 2017, pp. 75–97). Contra la interpretación de Raffo, quien considera que la concepción del espacio como lugar universal de las cosas es una idea que Leibniz abandona de manera muy temprana —según el autor en 1671—, intento mostrar que esta concepción trasciende sin duda el periodo de los escritos juveniles de Leibniz y que ciertas confusiones conceptuales en la lectura de Raffo hacen que, en vez de ver una armónica continuidad en la teoría del espacio de Leibniz, vea en ella una ruptura en su evolución histórica, a la que, además, asocia algunas dicotomías discutibles o espurias.
Problems of simulating subsea pipeline condition on the arctic shelf under seismic impact
Authors: Muravieva Lyudmila V. , Ovchinnikov Igor G.
Published: December 2019

Introduction. The paper represents an approach to studying a model of interaction of a system ‘pipeline – soil’ under conditions of frost penetration and seismic impact. The given problem is connected with the reclamation of the shelf of the Russian sector of the Arctic. There is a feature of induced earthquakes connected with hydrocarbon production. These earthquakes occur in a few years after the beginning of field development and lead to the worst condition of the pipelines. The research aims to the development of a method for subsea pipeline strength assessment allowing for nonlinear properties of an elastic foundation under the seismic impact. Materials and methods. The research is based on mathematical models of structural strength assessment under seismic conditions in the Arctic. The results are empirically obtained from the safety assessment method for a subsea pipeline under the seismic impact. The work was performed by the procedure of the analysis of existing arctic offshore projects. Results. The paper develops suggestions on the analysis of subsea pipelines on a nonlinear elastic foundation under conditions of a seismic impact. The suggestions were submitted for consideration to the Russian Maritime Register of Shipping. Buried below the seabed, the subsea pipelines provide an efficient and safe mode of transporting energy resources. Issues of relations of the subsea pipelines with surrounding and frozen ground are considered, pipeline thermal operation modes and seismic risks resulting in damages to the pipelines are taken into account. Conclusions. Solving the problem of the subsea pipeline condition assessment under arctic conditions is of practical interest in developing energy resource transportation ways. Simulation of a subsea “hot” pipeline is considered allowing for the nonlinearity of elastic foundation properties and seismic impact.
Objetos digitais: da maleabilidade do não-finito à uma ontologia
Authors: Castro Renan Marinho de
Published: December 2019

Apresenta os objetos digitais e seu impacto às unidades de informação utilizando a análise do caso do Centro de Pesquisa e Documentação de História Contemporânea do Brasil da Fundação Getulio Vargas (FGV/CPDOC). Destaca, brevemente, o impacto das tecnologias no cotidiano social contemporâneo, e sua influência nas transformações observadas no campo informacional. Manifesta a necessidade de uma reflexão, por parte das Unidades de Informação, a respeito do impacto que os documentos digitalizados e digitais têm sobre seu cerne, uma vez que com a criação de uma massificação do digital, se promove uma maleabilidade que suportes tradicionais de natureza física não comportam. Conceitua o born-digital e o destaca como sendo um elemento capaz de renovar toda a cadeia lógica informacional. Analisa os dados de consulta ao acervo do CPDOC, de acordo com as coleções mais visitadas no período de 2010 a 2016, destacando o impacto no número de acessos a partir da disponibilização de cópias digitais das coleções. Aponta a ontologia do digital como uma possibilidade de apropriação da informação e suas repercussões sob contexto da revolução tecnológica.
Desenvolvimento da nova Biblioteca Digital da Biblioteca Brasiliana USP: Relato de Experiência
Authors: Garcia Rodrigo Moreira
Published: December 2019

A Biblioteca Brasiliana Guita e José Mindlin é um órgão da Pró-Reitoria de Cultura e Extensão Universitária. Como entidade acadêmica da Universidade de São Paulo, configura-se como um centro interdisciplinar de informação e documentação, pesquisa e difusão científica. Tendo como finalidade a preservar e proporcionar irrestrito acesso de seu acervo, a estratégia adotada foi o desenvolvimento de uma biblioteca digital brasiliana. Este trabalho apresenta um relato de experiência do desenvolvimento da nova plataforma para a Biblioteca Digital da BBM. Apresenta uma retrospectiva desde o projeto-piloto, os problemas e êxitos no decorrer do percurso do projeto. Relata os desafios enfrentados e as soluções encontradas para a retomada dos processos de digitalização e desenvolvimento da coleção digital. Por fim, apresenta os próximos passos, desafios e aponta para a necessidade de definições estratégicas para a sua sustentabilidade institucional.
Política de indexação no contexto da política arquivística de preservação digital do Centro de Documentação e Memória da UNESP – CEDEM
Authors: Fujita Mariângela Spotti Lopes , Troitiño Sonia
Published: December 2019

Resumo: O acesso e recuperação de documentos da memória social brasileira é necessário para comprovar a identidade de movimentos político-sociais brasileiros. Para isso, existe uma logística operacional que envolve estratégias metodológicas da arquivística, da indexação, de interoperabilidade tecnológica e de preservação digital. A união dessas estratégias necessita planejamento mediante elaboração de política de indexação para representação documental com finalidade de precisão e revocação na recuperação. Este trabalho, de característica ensaística, propõe uma abordagem sobre as relações existentes entre as políticas de gestão documental e de indexação com o objetivo de refletir sobre a aplicabilidade da elaboração e implementação da política de indexação no âmbito arquivístico do Centro de Documentação e Memória da Unesp. A análise de uma política de indexação realizou-se com a avaliação do contexto da instituição mediante requisitos para a definição de elementos e variáveis influentes tanto na indexação quanto na recuperação. Entre os resultados destacam-se a necessidade de uso de vocabulário controlado e a sistematização do processo de indexação que propiciarão especificidade e/ou exaustividade. Considera-se que os resultados desta análise ensaística têm inovação porque proporciona visão gerencial à sistemas de recuperação da informação e de recursos informacionais em suporte digital para o contínuo aprimoramento dos métodos e instrumentos de representação documental direcionados ao contexto arquivístico.
Evaluation of toxicity and response to oxidative stress generated by orthodontic bands in human gingival fibroblasts
Authors: Bandeira Alexandre Marcos , Martinez Elizabeth Ferreira , Demasi Ana Paula Dias
Published: December 2019

Objective:

To evaluate the cytotoxicity of stainless-steel orthodontic bands and their influence on the expression of the antioxidant genes in human gingival fibroblasts.

Materials and Methods:

Ten bands of each brand (Dentsply-Sirona, Dentaurum, TP Orthodontics, and Morelli) were conditioned in 0.2 g/mL culture medium at 37°C for 14 days, and the corresponding conditioned media were applied over the fibroblasts. Cell viability was assessed after 24, 48, and 72 hours of exposure to the conditioned media by trypan blue exclusion assay. Expression of the antioxidant defense genes peroxiredoxin 1 (PRDX1), superoxide dismutase 1 (SOD1), and glutathione peroxidase 1 (GPX1) were evaluated by quantitative polymerase chain reaction after 24 hours of exposure. These parameters were compared to those of the cells not exposed to the conditioned media of the bands (control).

Results:

All bands promoted a reduction in the number of viable cells in the periods of 48 and 72 hours (P < .01). Analysis of gene expression showed a significant increase in the levels of PRDX1 transcripts caused by the conditioned media of the Dentsply-Sirona, TP Orthodontics, and Morelli bands (P < .01) as well as induction of SOD1 by the conditioned media of the Dentaurum and Morelli (P < .01). Expression of GPX1 was not influenced by the conditioned media.

Conclusions:

The orthodontic bands showed toxicity to fibroblasts and increased the expression of PRDX1 and SOD1 antioxidant genes, indicating induction of oxidative stress in the cells.
Lisans Turist Rehberliği Öğrencilerinde Öğrenme Stillerinin Genel Akademik Başarı Puanına Etkisi
Authors: Eser Seçkin , Çakıcı A.celil
Published: December 2019

Bireylerin öğrenme stil tercihleri farklılık gösterir. Bazı bireyler birden fazla öğrenme stilini kullanmayı da tercih edebilirler. Öğrenme sürecinde en etkin öğrenme stilinin/ stillerinin tercihi sürecin kısalmasını ve etkin bir öğrenme yolunun oluşmasına yardımcı olabilmektedir. Çalışmanın amacı lisans düzeyinde turizm rehberliği eğitimi alan öğrencilerin öğrenme stillerinin genel akademik başarı puanlarına etkisinin belirlenmesidir. Veriler, literatüre dayalı geliştirilen bir anketin Türkiye’de lisans düzeyinde turizm rehberliği eğitimi alan 1105 öğrenciye uygulanmasıyla derlenmiştir. Anketler, öğrencilere 2016-2017 eğitim-öğretim yılı bahar yarıyılında, turizm rehberliği bölümlerinde görevli öğretim elemanlarının yardımıyla, sınıf bazında kota örneklemesine göre, 10.02-20.03.2017 tarihleri arasında yüz yüze uygulanmıştır. Verilerin analizinde, tanımlayıcı istatistiklerin yanı sıra t-testi, ANOVA ve çoklu regresyon analizinden yararlanılmıştır. Lisans düzeyinde turizm rehberliği öğrencilerin genel başarı puanlarında öğrenme stillerinin etkili olduğu belirlenmiştir. Öğrencilerin görsel öğrenme stillerini tercih ettiği belirlenmiştir. Çalışma, lisans düzeyinde rehberlik eğitimi alan öğrencilerin, genel başarı puanlarının arttırılmasına yönelik çeşitli öneriler ile son bulmaktadır.
Al-Qardawi's Thought on Zakat of Stocks in a Modern Industry: an Experience of Indonesia
Authors: Dakhoir Ahmad
Published: December 2019

This paper studies on al-Qaradawi's stock zakat in the millennial era and modern industry. The main purpose of the study is to elaborate several points of significance of stock zakat within huge benefits of the capital market in Indonesia; therefore, this paper is a content analysis type of study using a literature study approach. In the meantime, the primary resource for the literature is a kitab (book) entitled fiqh al-zakat by Yusuf al-Qaradawi published in 1973. The crucial point emphasized by the paper is that al-Qaradawi's thoughts and opinions on stock zakat have been proven that he was such a progressive ulama (Islamic scholar), even he is in the current industrial revolution era. He has shown that such critical and innovative thoughts, either in zakat or other aspects. Al-Qaradawi points out that stock is categorized into traded goods so that it is an object of zakat; 2.5% of total stock should be taken out to those deserving. Indonesia as a country with the biggest Muslim majority in the world has been implementing stock zakat when one of the companies namely PT Henan Putihrai Sekuritas issued this kind of zakat. This made Indonesia the first country to proceed with stock zakat as the application of al-Qaradawi's thoughts and opinions after 45 years.
Tradisi Penyelesaian Sengketa Kewarisan Masyarakat Kalimantan Tengah (Studi pada Kabupaten Katingan dan Kota Palangka Raya)
Authors: Pelu Ibnu Elmi Achmat Slamat , Syaikhu Ahmad , Tarantang Jefry
Published: December 2019

The people of Central Kalimantan, especially in the District of Katingan and the City of Palangka Raya in resolving inheritance disputes prioritize deliberations by peaceful means and do not conflict with Islamic law. Because, Islamic law also accommodates customary laws, as long as it does not conflict with Islamic tenets. The tradition of resolving the inheritance disputes of the people of Central Kalimantan in the Katingan Regency and Palangka Raya City is in accordance with the custom in resolving inheritance disputes prioritizing peace by using Islamic law first and then holding a meeting to agree on the determination of shares and distribution of assets. The legal enforcement of the settlement of inheritance disputes in the community is recognized absolutely and they also apply farÄâ€™id (Islamic inheritance) law first, then deliberations are carried out in a family consensus with the principle of peace.
Analisis Program Kampung Keluarga Berencana Perspektif Maqasid al-Syari'ah (Studi di Kampung Logam Ngingas Waru Sidoarjo Jawa Timur)
Authors: Musyafaah Nur Lailatul
Published: December 2019

This article analyzes the programs of family planning village in the Ngingas Waru Village, known as the Kampung Logam (Blacksmith Village), Sidoarjo, East Java in the perspective of maqÄá¹£id al-SyarÄ«'ah (the theory of sharia objectives). In Islamic law, the family planning program is disputed, including the use of contraceptions. The author examines the implementation of the village planning program consisting of Tribina (BKB, BKR, BKL), UPPKS, and PIK-RM, in which they are then analyzed with the concept of maqÄá¹£id al-syarÄ«'ah. The results of the study concludes that the purpose of the formation of the family planning village programs in Ngingas is to improve a prosperous community, both in the fields of religion, health, education, descent, and economy. This concept is in accordance with the objectives of á¸¥if al-mujtamaâ€™ or á¸¥ifáº“ al-ummah in order to protect the rights of citizens related to maintaining the religion, the lives, the consciousness, the lineage, and the wealth.
DESARROLLO DE COMPETENCIAS A TRAVÉS DEL USO DE LAS HERRAMIENTAS SCRATCH Y ARDUINO EN NIÑOS Y JÓVENES PERTENECIENTES A ZONAS URBANAS MARGINALES DEL DISTRITO METROPOLITANO DE QUITO
Authors: Terneus Páez Francisco
Published: December 2019

La búsqueda incansable para hallar una vinculación entre la tecnología y la educación responde a la necesidad diaria del progreso y crecimiento económico y social de un país. La educación es la formación destinada a desarrollar varias capacidades necesarias para la vida, la tecnología por su parte, se convierte en la herramienta para la adquisición de estos saberes de manera divertida, interactiva e innovadora, por esta razón la presente investigación enlaza estos dos aspectos. El objetivo principal es determinar las ventajas del uso de las plataformas Scratch y Arduino en niños y jóvenes pertenecientes a veinte Casas Somos del Distrito Metropolitano de Quito. La investigación presenta características descriptivas y emplea la técnica de observación para recolectar información y posterior análisis. Se contó con la participación de 380 niños entre 8 y 11 años de edad y 105 adolescentes entre 12 y 15 años. Obteniendo que el uso de la plataforma Scratch y Arduino permitió la potenciación del desarrollo cognitivo, razonamiento lógico, operaciones lógicas del pensamiento y ubicación espacial, de los participantes, quienes propusieron como resultado la programación y diseño de diferentes proyectos enmarcados en la resolución de un problema de la vida cotidiana.
Proximate Composition, Physical, Functional, and Sensory Properties of Gurasa Produced from Flours of Indigenous Wheat Cultivars, Pearl Millet and Cowpea
Authors: Barde Aminu , Badau Mamudu Halidu , Agbara Gervase Ikechukwu , Lawan Hadiza Kubura
Published: December 2019

The quality of the three local wheat varieties, pearl millet and cowpea composite based gurasa (a Nigerian traditional flat bread) were evaluated. A 3x4x2 factorial design comprising 3 wheat cultivars, 4 levels of pearl millet substitution and 2 levels of cowpea that yielded 24 experimental group in addition to a 100% commercial wheat flour sample were employed for gurasa production. The proximate composition, weight, volume, swelling power, solubility index, water absorption capacity and acceptability of the gurasa were determined using standard methods. Water absorption ranged from 50 to 55% and increased with addition of cowpea flour. Swelling power decreased with increase in the solubility of the flour. Gurasa supplemented with pearl millet and cowpea had the highest protein (14.58%), crude fats (4.93%) and energy (333.13kcal/100 g) which increased with the level of substitution. Weight and volume of the gurasa ranged from 128.33 to 153.33g and 186.67 to 386.67 cm3 respectively. Sensory evaluation showed that all the gurasa products were acceptable in terms of colour, taste, aroma and texture when compared with the control gurasa.Â  Gurasa produced from the blends of local wheat cultivars, millet and cowpea increased the protein content as well as lysine (essential amino acid) that can satisfy the dietary requirement of human, especially for local consumers.
An Assessment of Organic Carbon Fractions in Paddy and Associated Non-paddy Soils of Upper Brahmaputra Valley of Assam
Authors: Phillips Zenesia A. , Karmakar R. M.
Published: December 2019

An investigation was carried out to study the soil organic carbon fractions in paddy and associated non-paddy soils of Assam, India. Three districts viz. Sivasagar, Jorhat and Golaghat in the Brahmaputra valley of Assam were selected for this study. Soil samples were collected from six profiles, three each from mono-cropped paddy and associated non-paddy areas were collected. Horizon -wise, soil samples were analyzed for organic carbon fractions. Organic carbon, Humus C, Humin C, Humic acid C and Fulvic acid C were all analyzed from the samples. Organic carbon content in soil varied from 0.90 -7.90g kgâ»Â¹. Surface horizons of paddy soils contained lower amounts of humus C (0.255-0.330 per cent) and fulvic acid C (CFA) (0.135 â€“ 0.180 per cent) and higher amounts of humin carbon (0.210 -0.475 per cent) and humic acid C (CHA) (0.120-0.150 per cent) as compared to that of non-paddy soils (0.300-0.435 and 0.195-0.300, 0.180-0.490 and 0.105-0.135 per cent respectively). It was concluded that the ratio of (CHA+CFA)/CTOC indicated less humification on the surface horizons of paddy soils. This is a direct result of prolonged submergence which led to humic acid carbon becoming less oxidized or humified.
Analysis of the Current and Potential Future Climate Hazards and their Impacts on Livelihoods and Adaptation Strategies in Arid and Semiarid Lands
Authors: Wambua Boniface N.
Published: December 2019

The study was carried out in four selected counties within the Arid and Semi-Arid Lands (ASALS) of Kenya namely Garrisa, West Pokot, Kilifi and Tana River which were under Kenya-Adaptation to Climate Change in Arid Lands (KACCAL) program. The study focused on the current and potential future climate hazards and their impacts on livelihoods and adaptation strategies within the framework of Kenya â€“ adaptation to climate change in arid lands. The ASALS covers 80% of Kenyaâ€™s land mass and support about 70 percent of the national livestock population and 90% of wildlife resources. Despite the great potential for development in the ASALS, the areas have continued experiencing great climate hazards leading to severe impacts on household livelihoods. The study methodology involved identification and assessing the major climatic hazards experienced for many years and implementation of adaptation strategies by the local communities. This involved a review of operating/ existing assessment of Climate Risks in Agriculture and Rural Development, Field visits, data collection and stakeholder consultation through a series of intensive questionnaire interviews with farmers, project Planners and managers and county officials in the four counties.The results showed that the four counties under study have been affected by droughts, floods, gusty winds and landslides hazards associated with climate change which have affected the livelihoods of the communities living in the ASALS. The impacts have been felt in food insecurity, scarcity of water resources, loss of livestock resources, persisted crop failure, increased malnutrition cases leading to infant morbidity and mortality among others. The intervention strategies to manage the climate change impacts Â applied by stakeholders among other well-wishers are; distribution of food relief, provision of shelter, provision of tents, building gabions, moving families at high risk to saver grounds, construction of water dams and pans. At household level, intervention strategies used are diversification of livelihoods, growing of fodder crops to supplement the natural pasture, charcoal burning, growing of drought resistant crops among others. Subsequently, the study recommends that more awareness should be created among local communities so that they diversify their livelihoods to cope with changing climate. The stakeholder working in ASALs, County governments and National government should invest more on intervention strategies to management climate change impactsCommunities living in ASALs and other stakeholders should be trained on how to use tools and methodologies developed in order to monitor impacts of climate change in their respective counties and implement the appropriate intervention strategies to ensure households recover from impacts associated to of climate change. In other words, capacity building at community, county and national government should be a top priority.
A Comparison of Rusunawa A4 IPB Building Storey Shear using Seismic Code of SNI 1726-2002 and SNI 1726-2012
Authors: Fajarrachman Isandre , Erizal Mr. , Widyarti Meiske
Published: December 2019

Indonesia is a high-risk earthquake country. It passed by Pacific Ring of Fire and surrounded by Eurasian, Pacific, Philippines and Indo-Australian plates. Indonesia government has already made an earthquake anticipation with applied Â Indonesian National Standard (SNI)1726-2012 to prevent building collapse and structural failure. SNI 1726-2012 is an updated version of seismic standard code of SNI 1726-2002. The application of SNI 1726-2012 would make an existing building which was designed with SNI 1726-2002, generates a different result of storey shear. This situation made an uncertainty of building safety. The purpose of this study is to compare two storey shear between seismic code of SNI 1726-2002 and SNI 1726-2012 at the Rusunawa A4 IPB Building. This study used equivalent static method to obtain storey shear force based on the two of seismic standard code. The result of the comparison of storey shear between SNI 1726-2002 and SNI 1726-2012, it showed storey shear in SNI 1726-2012 at canopy storey-6, roof storey-5, storey-4, storey-3, storey-2 and story-1 are increased by 12.31%, 11.51%, 10.14%, 8.59%, 6.48% and 3.01% compared to the storey shear in SNI 1726-2002.
First Records Species of Hottentotta Genus (Scorpiones:Buthidae) from Kerman Province, Southeast of Iran
Authors: Salari M. , Sampour M.
Published: December 2019

Investigations indicated that the scorpions are scattered in all parts of Iran. Few researches have been carried out to identify and study morphology of the scorpions of Iran. In the present investigations, several species of scorpions from Kerman Province ( Iran ) have been identified. The scorpions usually live under the stones. To obtain the scorpions, heavy materials including stones, clod and so on, were moved by crow bar and woods. The specimens were captured with a tongs. To study the morphological characters and identify the scorpions, Olympus Lica 2000 stereo microscope and key identify to scorpions, were used. In the present research a species of scorpions belonged to Hottentotta genus and Buthidae family, is reported for the first time from Kerman Province (Iran). This species is called Hottentotta schach and has been collected from Manoujan area, situated in the south and southwest of Kerman Province. The H. schach is a rare species, it is shaggy and some parts of it'sbody are dark. This species lives in height over 1000 meter and also is found in mountainous areas. Beside of this species, 6 other species called: Compsobuthus matthiesseni,Androctonus crassicauda, Odontobuthus doriae, Mesobuthus eupeus, Sassanidotus gracilis, Orthochirus farzanpayi, from this family, are found in the mentioned area. In taxonomy, the scorpions are order belonging to arachnida class, phylum arthropoda, super phylum invertebrate sub kingdom of metazoan and kingdom of animal. The weather in south of Kerman Province is warm and relatively humid.
In vitro Assessment of Euclea crispa (Thunb.) Leaf Extracts against Campylobacter spp. and Escherichia coli - Common Diarrhoeal Agents
Authors: Alayande Kazeem Adekunle , Pohl Carolina (H) , Ashafa Anofi Omotayo Tom
Published: December 2019

Diarrhoea is a common childhood disease with high mortality rate. This study thus aimed at assessing effect of Euclea crispa leaf extract and its fractions against diarrhoea causing bacterial isolates and determining time-kill dynamics by each of the potent fractions. Susceptibility of each isolates was determined by agar well diffusion while the minimum bacteriostatic and bactericidal concentrations were determined by agar dilution method. Time-Kill dynamics was evaluated over a period of 120 min against Escherichia coli (1323) representing Gram negative isolates. The zones of inhibition exhibited by the leaf extract at 20 mg/ml range between 17Â±0.28 and 22Â±0.00 mm while that of the partitioned fractions at 10 mg/ml are between 14Â±0.00 and 22Â±0.00 mm. MICs of the leaf extract range between 0.31 and 2.50 mg/ml. The lowest MIC (0.08 mg/ml) is exhibited by the fractions partitioned into ethyl acetate, n-butanol and water while that of n-hexane and chloroform is 0.16 mg/ml. The lowest MBC exhibited by all the fractions is 0.31 mg/ml except that of the chloroform (1.25 mg/ml). Total mortality was achieved by the ethyl acetate fraction at a concentration of 2 Ã— MIC after 120 min of contact time, meanwhile the mortality rate achieved by n-butanol, n-hexane, aqueous and chloroform fractions were 98, 94.6, 91.8 and 83.7% respectively under similar condition. This study showcase significant antidiarrhoeal potential of Euclea crispa leaf extracts and equally indicates a source of readily available therapeutic agent against diarrhoeal infection in South Africa and environs.
Non-Weighted Evaluation Function in Multi-Objective Problems
Authors: Himyari Bayadir Abbas , Yasin Azman , Gitano Horizon
Published: December 2019

An evaluation function is proposed to deal with multi-objective problems without weight using a new composition method. Improving the evaluation function by reducing its complexity through discarding the weights. The evaluation function is utilized for the optimization of fuzzy rules.A genetic algorithm is applied as a multi-objective algorithm for fuzzy rules extraction. Simplicity during building fuzzy inference system and reducing the computational complexity is required. The algorithm is applied on AFR data sets.