bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fluoride release from conventional, resin-modified and hybrid glass ionomer cements
Authors: Zebić Maja Ležaja , Jakovljević Nikola , Miletić Vesna 
Published: February 2019

Summary
Introduction The aim of the study was to quantify and compare fluoride release from four different glass ionomer cement products (GICs).
Materials and Methods Standardized disk-shaped samples (5x2mm; n=5/group) of GIC restorative materials: conventional (Fuji IX, GC Corp., Japan), resin-modified (Fuji II LC, GC) and hybrid glass ionomer cement (Equia Forte, GC) and a conventional GIC liner/base material (Alfagal, Galenika, Serbia) were tested for fluoride release up to 21 days postsetting. Each sample was immersed in 5 mL of fresh deionized water during each time interval. Universal microhybrid composite (Filtek Z250, 3M EPSE, USA) and adhesive (Adper Single Bond, 3M ESPE) were used as negative controls. Fluoride release was measured using an F-selective electrode (Cole-Parmer, USA) and an ion meter (Oakton 700, Cole-Parmer, USA). Data were statistically analyzed using one-way ANOVA, regression and correlation analysis at 0.05.
Results The highest total fluoride release was measured from Alfagal (386±61 ppm/g), and significantly less from Equia (188±29 ppm/g), Fuji IX (143±11 ppm/g) and Fuji II LC (104±14 ppm/g) (p < 0.05). All GICs showed the highest fluoride release during the first 24 hours post-setting. After 3 days, fluoride release slowed down reaching a plateau for all materials. Regression and Pearson correlation analysis showed significant inverse relationship between fluoride release and sample mass and density (p<0.001).
Conclusion Of the three GICs indicated for use as restorative materials, Equia Forte released the highest fluoride concentration. Fluoride release was material and density dependent, with higher release occurring from lower density GICs.
Microbiological status of root canal after unsuccessful endodontic treatment
Authors: Nešković Jelena , Jovanović-Medojević Milica , Grga Đurica , Popovic Branka , Živković Slavoljub 
Published: February 2019

Summary
Introduction The main objective of endodontic treatment is to eliminate infection from root canal and prevent reinfection by three-dimensional hermetic obturation of the canal system. Endodontic failure can occur due to inability of complete control and elimination of infection from the root canal.
The aim of this study is to investigate, by PCR technique, microbiological status of previously endodontically unsuccessfully treated teeth immediately after the removal of obturation material.
Material and Methods The analysis included 30 teeth indicated for endodontic retreatment. After removing previous root canal filling material, the bacteriological sample was taken by sterile instrument (# 15) and paper points. Standard PCR technique was used to analyze the incidence of E.faecalis, P.micros, P.intermedia, P. endodontalis and A.actinomycetemcomitans.
Results Positive bacteriological findings were registered in 80% of cases, while bacteria were not identified in 20% of all samples (all taken from the root canals without significant changes in periapical tissue). From 24 canals with identified bacteria, 17 had affected apical periodontium. The most dominant microbe in root canals with positive bacteriological finding was E.faecalis (83.3% of the canals) and P.intermedia (75%). In case of teeth with chronic periapical changes, the most common was E. faecalis (94%) and P.intermedia (82.3%).
Conclusion The presence of periapical lesions significantly affects microbiological status of endodontically treated teeth. The presence of bacteria was confirmed in most teeth with periapical lesions, while the most frequently identified bacteria were E. faecalis, P.intermedia and P.micros.
Serbian Dental Institutions Top Cited Research (1996–2018)
Authors: Jaćimović Jelena 
Published: February 2019

Summary
Introduction Citation analysis, as one of the best-known bibliometric approaches, is widely used in the evaluation of research output and assessment of research performance and impact. The purpose of this study was to identify the top cited articles published by researchers affiliated to Serbian dental institutions and to analyze their characteristics in order to describe cooperation at individual and institutional, as well as at national and international level.
Material and Methods Articles that cited the most 2018 publication in the Web of Science were assessed. The analyzed aspects covered distribution of annual production, annual citations, journals, categories, countries, institutions, authors, research focuses and trends by author keywords and KeyWords Plus.
Results The top cited papers were published in 60 journals from 1997 to 2016, with the mean number of 45.08 citations per article. These papers were co-authored by 449 authors, responsible for 726 authorships, affiliated to 149 institutions from 41 countries. Among the overall number of authors, 238 were from Serbia, while 211 were affiliated with international institutions. The most productive institutions were the University of Belgrade and Military Medical Academy from Serbia, whilst the international contributing institutions were primarily from the USA, England, and Italy.
Conclusion The present study presented useful insight into the most influential Serbian dental institutions research, revealing the most productive actors and multidisciplinary nature of the research contribution.
Decline in Female Fertility After 40 Years
Authors: Sorak Marija , Sazdanovic Predrag , Tulic Lidija , Garalejic Eliana , Arsic Biljana , Arsenijevic Neda 
Published: February 2019

Abstract
Important factor related to the conception possibility is women age. The decline in fertility with aging is proven and evident in literature. Infertility is increasing and many couples seek help in advanced techniques such as IVF (in vitro fertilization) in order to overcome the problem caused by aging, but the quality of the oocytes is a significant limiting factor. With the aging the quantity and quality of oocytes decreases, such as the quality of the embryo after fertilization. The accelerated rhythm of life, liberty and women inclusion in all kinds of professions brought many benefits to women, but also increasingly postponing births. Each person is unique individual, and can be more or less fertile compared to the average at same age. Unfortunately, some women has a rapid decline in fertility - accelerate aging, very early, already in the early twenties and when testing them with different methods and exams, the result is very low number of oocytes, low value of anti-Müllerian hormone and also very poor quality of these oocytes, or low ovarian reserve. The problem is that when you have accelerate aging, even IVF techniques can not be of great help in achieving pregnancy. The pregnancy rate (17,65%) and the childbirth rate (5,88%) with the patients older than 40 is very low, although comparable to the data from the scientific literature and speaks in favour of the fact that the success of assisted reproductive techniques is very modest with women older than 44.
Biological Mechanisms of Chronic Wound and Diabetic Foot Healing: The Role of Collagen
Authors: Stupin Victor Alexandrovich , Gabitov Ruslan Borisovich , Sinelnikova Tatiana Georgievna , Silina Ekaterina Vladimirovna 
Published: February 2019

Abstract
The treatment of chronic wounds is a continuously developing research focus. The problems of excessive mechanical forces, infection, inflammation, reduced production of growth factors, and lack of collagen will affect the results of treatment. The purpose of this study was to analysse the elements that lead to long-term non-healing of chronic wounds and trophic ulcers, including diabetic foot syndrome, by determining the optimal treatment algorithm. The paper presents an analysis of the world literature on the etiopathogenesis and principles of chronic wound treatment in diabetic foot syndrome. The epidemiology of chronic wounds of different genesis is presented. The issues of physiological and metabolic disorders in chronic ulcers affecting the process of wound healing are discussed. Particular attention is paid to collagen, which is a protein that forms the basis of connective tissue; collagen ensures the strength and elasticity of the skin, which confirms the importance of its role not only in aesthetics but also in the process of wound healing. Different types of collagen and their roles in the mechanisms of chronic wound healing in diabetic foot syndrome are described. The results of clinical studies evaluating the effectiveness of medical products and preparations, consisting of collagen with preserved (native collagen) and fractionated structures, in treating chronic wounds of diabetic foot syndrome are analysed. It has been shown that the use of native collagen preparations is a promising treatment for chronic ulcers and wounds, including diabetic foot syndrome, which makes it possible to increase the effectiveness of treatment and reduce the economic costs of managing these patients.
Influence of the Local and Systemic Oxidative Stress on Periodontitis: Role of Antioxidant Therapy
Authors: Saulin Mihail Petrovich , Bolevich Sergey , Silina Ekaterina , Orlova Aleksandra , Raicevic Natalija , Vorobiev Sergey , Bolevich Stefany , Sinelnikova Tatjana 
Published: February 2019

Abstract
This study was divided into experimental part of study which was conducted on 75 Wistar rats with the modeled periodontitis and and clinical part of research which included 106 patients with the chronic generalized periodontitis (CGP). The study established an importance of the oxidative stress (both local and systemic) in development and progress of the disease. It is found out that the saliva of rats with the modeled periodontitis there is the reliable increase in the content of total protein, alkaline phosphatase (ALP) and malonic dialdehyde (MDA) in 1.2, 2.6 and 2.8 times respectively, with the reduced activity of catalase in 2.5 times (all p<0.05). It is determined that the gingiva tissue of rats with the modeled periodontitis has the reduced contents of total protein, collagen, elastin and sulfated glycosaminoglycans in 2.8, 1.5, 1.6 and 1.3 times respectively (all p<0.05). It is proved that the antioxidant (AO) therapy normalizes in the rat saliva the content of protein and MDA (decrease in 1,2 and 1,8 times accordingly, p<0.05) and increases the activity of catalase (in 2.5 times, p<0,05). Calcium D3 normalizes the protein content and activity of ALP (decrease in 1.2 and 1.5 times, respectively, p<0.05).
It is found out that the saliva of patients with CGP in the acute phase the content of protein, ALP and MDA increases in 1.9, 2.2 and 1.5 times accordingly (p<0,05) with the reduced catalase activity in 1,1 times (p<0,05). It is revealed that the inclusion of CGP patents in AO complex therapy results jointly with the best clinical effect in the more expressed reduction in generation of reactive oxygen species and lipid peroxidation and also the increased plasma APA.
ANALISA PANJANG OPTIMUM DESTILATOR SURYA TERHADAP KUANTITAS AIR HASIL DAN UNJUK KERJA DESTILATOR TENAGA SURYA.
Authors: OKTARI SYAFRIL OKTARI 
Published: February 2019

Teknologi destilasi (penyulingan) air untuk mendapatkan air tawar dari air kotor atau air laut intinya adalah menguapkan air laut dengan cara dipanaskan, yang kemudian uap air tersebut diembunkan sehingga menjadi air tawar. Proses kerja destilator terdapat juga kelemahan yaitu dari proses penguapan destilator, uap yang dihasilkan lalu diembunkan menjadi butiran air yang menempel dikaca. Selanjutnya butir air bertemu dengan butir-butiran air yang lainnya dan menghasilkan butir air yang memiliki berat air berlebih sehingga sebelum butir air tersebut sampai ke dalam penampungan, butir air tersebut akan terlebih dahulu jatuh. Begitu pula dengan semakin panjangnya destilator akan mempengaruhi penguapan jatuhnya butir air sebelum jatuh ke dalam penampungan. Penelitian ini bertujuan untuk mengetahui panjang optimum destilator tenaga surya. Penelitian ini menggunakan panjang optimum dari 500 mm, 600 mm, 700 mm, 800 mm, 900 mm, dan 1000 mm sebagai panjang yang akan dianalisa. Proses penguapan tersebut akan mempengaruhi dari sistem destilasi dan kuantitas air yang dihasilkan. Dari hasil pengujian yang memiliki panjang optimum terhadap kuantitas air hasil yang terbanyak yaitu pada panjang 70 cm sebesar 1678 ml.
Hal ini disebabkan oleh air pada basin yang sudah diuapkan harus diembunkan (kondensasi) supaya uap jenuh tersebut melepaskan kalor laten agar menghasilkan kuantitas air hasil yang maksimal. Dari hasil pengujian dan perhitungan yang memiliki panjang optimum terhadap unjuk kerja terbaik pada destilator tenaga surya yaitu adalah panjang 70 cm, karena laju energi saat penguapan sebesar 127,6 Watt, laju energi saat pengembunan sebesar 124,02 Watt, laju destilasi dalam proses destilasi sebesar 0,0000517 kg/s, efesiensi produk destilasi sebesar 11,65%, dan efesiensi sistem destilasi sebesar 38,2%.
Rancang Bangun Aplikasi Virtual Tour Lokasi Rekreasi dan Hiburan Keluarga di Pontianak
Authors: Dio Dio , Safriadi Novi , Sukamto Anggi Srimurdianti 
Published: February 2019

Pontianak merupakan ibu kota Provinsi Kalimantan Barat dan dikenal sebagai kota khatulistiwa yang dilalui dua sungai besar yaitu Sungai Kapuas dan Sungai Landak. Selain itu, Pontianak ini juga mempunyai tempat rekreasi yang dapat menjadi objek wisata dan hiburan yang dapat dimanfaatkan sebagai tempat bersama keluarga ataupun teman, serta sebagai tempat untuk menarik wisatawan luar. Sebagai tempat rekreasi, maka dibutuhkan sebuah media untuk menyebarkan informasi kepada masyarakat dalam maupun luar Pontianak. Media informasi dapat menjadi saran untuk meningkatkan daya tarik pengunjung agar berkunjung ke suatu tempat rekreasi. Aplikasi virtual tour yang dikembangkan mampu memberikan informasi terkait kondisi tempat rekreasi yang ada. Aplikasi dibangun berbasis website sehingga dapat diakses oleh semua orang. Perancangan aplikasi ini menggunakan MDLC (Multimedia Development Life Cycle) yang terdiri dari 6 tahap, yaitu Concept, Design, Material Collecting, Assembly, Testing, dan Distribution. Aplikasi berjalan dengan baik dan bebas kesalahan berdasarkan pengujian black box, dan dinilai layak dengan hasil persentase 85,59% berdasarkan pengujian aspek usability, serta tampilan aplikasi dapat ditampilkan dengan baik melalui desktop maupun mobile browser berdasarkan pengujian portablity. Berdasarkan hasil pengujian, dapat disimpulkan bahwa aplikasi ini layak diimplementasikan.
Program Aplikasi Pengolahan Nilai Rapor Siswa pada MDTA Nurul Ikhlas Kabupaten Sukabumi
Authors: Sulaiman Humdun , Indriyanti Indriyanti - , Qomaruddin M. 
Published: February 2019

Komputer merupakan alat yang sangat berguna terutama dalam hal kecepatan dan kemudahan dalam beberapa aspek proses berfikir manusia. Komputer telah meningkatkan kemampuan mnusia dengan sangat luar biasa, sehingga bisa menyelesaikan pekerjaan dengan cepat. MDTA Nurul Ikhlas Sukabumi yaitu instansi yang bergerak dalam bidang pendidikan, akan tetapi pengolahan data kehadiran maupun daftar nilai siswa pada sistem yang berjalan belum terkomputerisasi. Guru bidang studi masih melakukan pengolahan nilai dan pengumpulan data absen dengan sistem manual, sehingga sering terjadi keterlambatan dalam proses pengisian nilai rapor. Pada penelitian ini akan dibuat sebuah program aplikasi pengolahan nilai rapor siswa agar memudahkan guru dan untuk mengurangi masalah keterlambatan pengisian nilai rapor. Metode yang digunakan dalam penelitian ini yaitu Metode Waterfall dan rancangan basis data menggunakan Entity Relationship Diagram (ERD) dan Logical Record Structure (LRS). Dengan adanya program aplikasi tersebut, pengolahan data nilai siswa pada MDTA Nurul Ikhlas Sukabumi dapat berjalan dengan baik dan cepat , sehingga laporan-laporan yang dibutuhkan dapat tersaji secara tepat waktu.
Penerapan Data Mining Classification untuk Data Blogger Menggunakan Metode Naïve Bayes
Authors: Anggraini Recha Abriana , Widagdo Galih , Budi Arief Setya , Qomaruddin M 
Published: February 2019

Jumlah pengguna situs blogger yang semakin meningkat menyebabkan perlu dilakukan pengklasifikasian data untuk mengetahui pengguna tersebut masuk dalam kategori pengguna blogger professional atau bukan. Sebagai referensi terkait penelitian ini adalah penelitian yang sudah dilakukan oleh peneliti sebelumnya. Teknik pengklasifikasian pemodelan deskriptif dan prediktif dengan algoritma data mining yaitu menggunakan metode naïve bayes. Untuk mengelola data digunakan software rapid miner studio 6.0, dataset blogger diperoleh dari website UCI Machine learning Repository, Perhitungan performance vector menunjukkan akurasi klasifikasi metode Naive bayes diperoleh sebesar 86.67%. Sedangkan class precision dan class recall untuk prediksi yes menunjukkan tingkat precision sebesar 91.30% dan untuk prediksino sebesar 71.43%. Hasil klasifikasi dari data blogger dengan metode naïve bayes membagi 2 kelas klasifikasi PB yaitu class yes dan class no. Untuk nilai class yes yaitu 0.680 dan nilai class no yaitu 0.320. Dari hasil pengolahan data dapat diketahui bahwa tingkat akurasi pengklasifikasian data blogger mencapai 86.67%.
Processo decisório: análise fílmica com base no filme Treze dias que abalaram o mundo
Authors: Maia Fabrício Simplício , Messer Daiane , Paiz Eduarda , Seganfredo Simone 
Published: February 2019

O presente estudo tem como objetivo realizar uma análise do filme “Treze dias que abalaram o mundo” em contraponto com os pressupostos teóricos do tema processo decisórios, demonstrando como a análise fílmica aliada à teoria traz a lume a aprendizagem e discussão. Através de seu método de linguagem metafórica, a análise fílmica condiciona um olhar analítico a medida em que determinadas partes do filme são correlacionadas a teorias existentes, além de produzir uma linguagem interpretativa. O estudo caracteriza-se como qualitativo, assumindo perfil descritivo e bibliográfico. Para obter os resultados, realizou-se uma revisão da literatura, permitindo a coleta de dados secundários e que deram suporte à realização do estudo. A etapa correspondente à análise fílmica permitiu uma comparação entre as etapas do processo decisório e sua aplicação percebida no filme 13 Dias que Abalaram o Mundo. Por fim, foi possível identificar, no decorrer do processo decisório do filme, a existência de conflitos e também como as experiências pessoais influenciam na tomada de decisão e na aplicação da estratégia estabelecida. The present paper aims to analyze the movie "Thirteen Days" against the theoretical assumptions of decision-making, showcasing how the film analysis jointed to the theory spotlights the learning and the discussions. Through the metaphorical language method, the film analysis sets up an analytical view to the extent in which relations are established between film parts and existing theories, and an interpretative language. The research is classified as qualitative, assuming a descriptive and bibliographic profile. To obtain the results, a literature review was conducted, allowing for secondary data collection supporting the execution of the research. The step corresponding to the film analysis allowed a comparison between the phases of decision-making and their perceived application in the film Thirteen Days. Finally, it was possible to identify, along the decision-making process in the film, the existence of conflicts, and how personal experiences influence the decision-making and the established strategy's application.
O impacto do ecodesign no processo de desenvolvimento de produtos
Authors: Schiochet Ricardo Oselame 
Published: February 2019

O presente artigo pretende investigar de que forma as mudanças no comportamento do mercado e o crescimento da consciência ambiental tem feito com que os consumidores mudem sua postura e exijam das empresas uma readequação de processos com vistas a adotar métodos de gestão mais alinhados com a questão da sustentabilidade e principalmente dos impactos ambientais de suas ações. Sendo assim, o principal objetivo deste artigo é compreender de que maneira empresas de diferentes segmentos estão implementando os conceitos e ferramentas de ecodesign em seus processos de desenvolvimento de produto. Para tanto, foi realizado um levantamento teórico em periódicos da área, além de um estudo exploratório de campo baseado em entrevistas em profundidade, que mostrou que a motivação das empresas para a adoção de práticas de ecodesign ainda é limitada a cumprir exigências legais, ou como forma de redução de custos. Sob uma perspectiva mercadológica percebe-se que o marketing exerce pouca influência na relação entre o ecodesign e o processo de desenvolvimento de produtos. This article intends to investigate how changes in market behavior and the growth of environmental awareness have made consumers to change their posture and demand from companies a process readjustment with a view to adopt management methods more in line with sustainability and especially the environmental impacts. Therefore, the main objective of this article is to understand how companies from different segments are implementing ecodesign concepts and tools in their product development processes. For that, a theoretical survey was carried out, as well as an exploratory field study based on in-depth interviews, which showed that the motivation of companies for the adoption of ecodesign practices is still limited to complying legal requirements, or as way of reducing costs. From a marketing perspective, it is perceived that marketing has little influence on the relationship between ecodesign and product development process.
Seleção Interna por Competências: proposta para implantação do processo na Justiça do Trabalho brasileira.
Authors: Merlin Higya Alessandra , Oliveira Fernando Faleiros de , Neto de Jesus Djanires Lageano 
Published: February 2019

O presente trabalho objetiva analisar o processo de seleção interna por competências na Administração Pública Federal e sua respectiva aplicação na Justiça do Trabalho Brasileira. As questões a que se pretendeu responder na pesquisa foram: “Como é realizada a seleção interna na Justiça do Trabalho e Quais são as oportunidades de melhoria evidenciadas no processo de seleção interna aplicado na Justiça do Trabalho?”. Para tanto, foi realizada pesquisa de abordagem qualitativa e quantitativa, com levantamento bibliográfico e documental, incluindo as práticas em curso no que se refere ao estudo em tela. Com base no material pesquisado, foi elaborada proposta para a implantação do processo de seleção interna por competências na Justiça do Trabalho brasileira, obedecendo as exigências legais. O estudo permitiu concluir que as diretrizes para a gestão de pessoas na Administração Pública Federal são claras e fundamentadas, tendo como base o modelo de Gestão por Competências. Aliando o fato às práticas já existentes, foi possível identificar oportunidades de melhoria e delinear uma proposta para o processo de seleção interna por competências para a Justiça do Trabalho. This research had objective to analyze the internal selection by competences process in the Brazilian Federal Public Administration and its respective application in the Brazilian Labor Court. The questions that were intended to answer were: "How is the internal selection and What are the opportunities for improvement evidenced in the internal selection process applied in the Brazilian Labor Court?". For this, a qualitative and quantitative research was carried out with a bibliographical and documentary survey, including the current practices regarding the study on screen. Based on the material researched, a proposal was made to implement the internal selection by competencies process, obeying legal requirements. The study allowed us to conclude that the guidelines for people management in the Federal Public Administration are clear and based on the model of People Management by Competencies. Combining the fact with existing practices, it was possible to identify opportunities for improvement and to outline a proposal for the internal selection process by competencies for Labor Justice.