bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fracture Resistance and Failure Mode of Custom-made Post-and-cores of Polyetheretherketone and Nano-ceramic Composite
Authors: Teixeira KN , Duque TM , Maia HP , Gonçalves TMSV 
Published: February 2020

Clinical RelevanceCustom-made post-and-cores of polyetheretherketone (PEEK) and nano-ceramic composite showed good fracture resistance and failure mode. Clinicians should be aware that these materials might be an efficient alternative for post-and-cores, because they promote esthetics while reducing the risk of root fractures.SUMMARYPurpose: The purpose of this study was to evaluate the fracture resistance and failure mode of custom-made post-and-cores manufactured with different esthetic materials.Methods and Materials: A total of 48 mandibular premolar extracted teeth were selected, endodontically treated, and prepared to receive the posts. Specimens were randomly divided into four groups (n=12/group): group 1, polyetheretherketone (PEEK, Degos; G1); group 2, nano-ceramic composite (Lava Ultimate, 3M ESPE; G2); group 3, cast metal post (NiCr alloy, control; G3); group 4, fiberglass post (Whitepost, FGM, control; G4) customized with a nano-hybrid resin composite (Z250, 3M ESPE). Experimental post-and-cores (G1 and G2) were manufactured with a computer-aided design/computer-aided manufacturing system. All posts were cemented with self-adhesive resin cement (Rely X U200, 3M ESPE), and specimens were stored in distilled water at 37°C for 60 days. A universal testing machine was used to measure the fracture resistance (0.5 mm/min at an angle of 45° to the long axis of the tooth). Fractures were classified as repairable or catastrophic. One-way analysis of variance with Tukey post hoc and χ2 tests for independence and Bonferroni adjustments were applied (α=0.05).Results: The fracture resistance values (mean ± SD, in newtons) were 379.4 ± 119.8 (G1), 506.4 ± 138 (G2), 939.6 ± 146.5 (G3), and 449.6 ± 66.5 (G4). Only G3 exhibited a significant difference (p&lt;0.05). The χ2 test showed an association between failure mode and post-and-core material [χ2(3) = 23.65; p&lt;0.001]. After Bonferroni adjustment, only G3 presented a higher than expected incidence of catastrophic failures (p&lt;0.001). In the remaining groups, most failures were repairable and related to debonding.Conclusions: Customized post-and-cores of PEEK and nano-ceramic composites exhibited good mechanical performance. Their fracture resistance was comparable to that observed for fiberglass customized posts, yet lower than that for cast metal posts. For PEEK post-and-cores, in particular, additional studies are needed to improve adhesiveness and reduce the risk of debonding.
Effect of Shortened Light-Curing Modes on Bulk-Fill Resin Composites
Authors: Sampaio CS , Pizarro PG , Atria PJ , Hirata R , Giannini M , Mahn E 
Published: February 2020

Clinical Relevance
Shortened light curing does not affect volumetric polymerization shrinkage or cohesive tensile strength but negatively affects the shear bond strength of some bulk-fill resin composites. When performing shortened light curing, clinicians should be aware of the light output of their light-curing units.

SUMMARY
Purpose: To evaluate volumetric polymerization shrinkage (VPS), shear bond strength (SBS) to dentin, and cohesive tensile strength (CTS) of bulk-fill resin composites (BFRCs) light activated by different modes.
Methods and Materials: Six groups were evaluated: Tetric EvoCeram bulk fill + high mode (10 seconds; TEC H10), Tetric EvoFlow bulk fill + high mode (TEF H10), experimental bulk fill + high mode (TEE H10), Tetric EvoCeram bulk fill + turbo mode (five seconds; TEC T5), Tetric EvoFlow bulk fill + turbo mode (TEF T5), and experimental bulk fill + turbo mode (TEE T5). Bluephase Style 20i and Adhese Universal Vivapen were used for all groups. All BFRC samples were built up on human molar bur-prepared occlusal cavities. VPS% and location were evaluated through micro–computed tomography. SBS and CTS tests were performed 24 hours after storage or after 5000 thermal cycles; fracture mode was analyzed for SBS.
Results: Both TEC H10 and TEE H10 presented lower VPS% than TEF H10. However, no significant differences were observed with the turbo-curing mode. No differences were observed for the same BFRC within curing modes. Occlusal shrinkage was mostly observed. Regarding SBS, thermal cycling (TC) affected all groups. Without TC, all groups showed higher SBS values for high mode than turbo mode, while with TC, only TEC showed decreased SBS from high mode to turbo modes; modes of fracture were predominantly adhesive. For CTS, TC affected all groups except TEE H10. In general, no differences were observed between groups when comparing the curing modes.
Conclusions: Increased light output with a shortened curing time did not jeopardize the VPS and SBS properties of the BFRCs, although a decreased SBS was observed in some groups. TEE generally showed similar or improved values for the tested properties in a shortened light-curing time. The VPS was mostly affected by the materials tested, whereas the SBS was affected by the materials, curing modes, and TC. The CTS was not affected by the curing modes.
DETERMINATION OF CELL TYPE AND HAEMOCYTE MORPHOMETRIC CHARACTERISTICS OF WESTERN AUSTRALIA FRESHWATER CRAYFISH (Cherax cainii) AT DIFFERENT TEMPERATURES IN VITRO
Authors: Prastowo Bambang Widyo , Lareu Ricky , Caccetta Rima , Fotedar Ravi 
Published: February 2020

The purpose of this study was to identify and morphologically characterize the hemocyte cell types of freshwater crayfish, Cherax cainii. In addition to morphological observations using a light microscope (LM) and electron transmission microscope (TEM), a flow cytometer (FCM) is also used. Three main types of haemocyte of C. cainii were identified by LM, TEM, and FCM. Determination of haemocyte by LM based on the number, size of cytoplasmic granules and the ratio of N:C. These cells are Hyaline (HC), Small Granule (SGC), and Large Granule (LGC) cells. Three types of haemocyte were also observed by TEM based on cell and nucleus size, granule diameter, number of cytoplasmic granules per cell and N:C. Haemocyte population was successfully detected with FCM based on forward scatter (FSC) signals, versus side scattering signals/side scatter (SSC), with plot data via scatter parameter gating. Three cluster formations were observed, which were temporarily classified as SGC, LGC, and HC regions. Morphometric analysis was performed with TEM on C. cainii haemocyte to measure various cellular features. Some morphological features vary between types of haemocyte and are also affected by temperature. Total hemocyte count (THC) and differential hemocyte count (DHC) are calculated using FCM. THC increases with higher temperatures, from 1,9 x 106 /ml at 20 °C to 4.9 x 106 /ml at 30 °C. The most abundant hemocyte at all temperatures is HC, followed by SGC and LGC.
PENERAPAN MEDIA PEMBELAJARAN EDMODO UNTUK MENINGKATKAN MOTIVASI AKTIVITAS INTELEKTUAL PADA MAHASISWA PENDIDIKAN TEKNIK ELEKTRO UNIVERSITAS PGRI MADIUN
Authors: Ayuningtyas Vinanda U’un 
Published: February 2020

Edmodo merupakan media pembelajaran yang berbasis internet, yang diwajibkan untuk Mahasisw di dalam kelas maupun diluar kelas untuk mendukung proses belajar mengajar. Penelitian ini bertujuan untuk: 1) mengetahui hasil belajar mahasiswa Pendidikan Teknik Elektro Universitas PGRI Madiun khususnya untuk Mahasiswa semester 3 (tiga), 2) memperbaiki aktivitas intelektual dalam bidang IT mahasiswa yang belum digunakan secara efektif. Metode penelitian yang digunakan dalam penelitian ini adalah metode eksperimen dengan bentuk kuasi eksperimen. Pre test dilakukan diawal penelitian dan Post test dilakukan diakhir penelitian baik terhadap kelas eksperimen maupun kontrol. Berdasarkan tabel diatas skor N-Gain kelas kontrol yang belum menggunakan media pembelajaran kategori rendah , sedangkan kelas eksperimen yang mendapatkan perlakuan menggunakan media pembelajaran Edmodo termasuk dalam kategori sedang. Jadi dapat disimpulkan bahwa implementasi media pembelajaran Edmodo dapat memotivasi aktifitas intelektual sehingga mahasiswa tertarik dan ingin terus belajar dengan dibuktikan hasil belajar meningkat. Kesimpulan tersebut dapat menjadi pertimbangan dalam guru menggunakan media pembelajaran dan melaksanakan proses kegiatan belajar mengajar di dalam kelas.
STUDI PENYEBARAN KONTAMINAN LOGAM BERAT TIMBAL (PB) DAN MERKURI (HG) DARI AIR LINDI TERHADAP AIR SUNGAI (STUDI KASUS TPA REGIONAL KOTA SOLOK)
Authors: Pratiwi Dian , Aida Eka Rahmatul 
Published: February 2020

Tempat Pemrosesan Akhir Sampah (TPA) merupakan tempat untuk menampung pembuangan sampah dari berbagai lokasi, yang biasa cakupannya adalah satu kota. Penyingkiran dan pemusnahan sampah ke dalam tanah merupakan cara yang selalu digunakan, karena biaya relatif murah, pengoperasiannya mudah dan luwes dalam menerima limbah. Setiap TPA memiliki karakteristik air lindi yang berbeda tergantung dari proses yang terjadi di dalam landfill, yang meliputi proses fisika, kimia dan biologis. Umumnya lindi mengandung Chemical Oxygen Demand (COD), Biology Oxygen Demand (BOD), Total dissolved solids (TDS), total organic carbont (TOC), senyawa nitrogen nitrogen dan berbagai jenis logam berat yang tinggi. Parameter pencemar yang di tinjau pada penelitian ini adalah timbal (Pb) dan Mercury (Hg). Untuk mengetahui penyebaran kontaminan, pada penelitian dilakukan permodelan matematis timbal (Pb) dan Mercury (Hg) dengan munggunakan model analitik 1-dimensi dan 2 dimensi berdasarkan persamaan adveksi dan dispersi pada air tanah dan air permukaan. Penelitian ini dilakukan di sungai sawah lansek yang merupakan badan air tempat mengalirnya lindi dari TPA regional kota solok. Konsentrasi timbal (Pb) dan Mercury (Hg) diukur pada 3 titik, dari hasil pengukuran tersebut diketahui bahwa sawah lansek memang tercemar oleh lindih TPA yang dilihat dari konsentrasi timbal (Pb) dan Mercury (Hg) yang sudah melebihi baku mutu. Simulasi dari timbal (Pb) dan Mercury (Hg) menunjukkan semakin lama waktu (t), input polutan yang konstan membuat beban kontaminan semakin besar. Akibatnya konsentrasi kontaminan pada t yang lebih besar akan mengalami penurunan yang lebih jauh. Hasil simulasi konsentrasi timbal (Pb) dan merkuri (Hg) telah mencapai jarak ± 100 Meter dari TPA kontaminan terus menyebar seiring bertambahnya umur TPA, kontaminan timbal (Pb) dan mercury (Hg) telah mencapai sungai Batang Lembang yang berjarak ± 2500 Meter dari TPA, dan mengalami penurunan pada jarak yang lebih jauh.
Perancangan Sistem Informasi Bencana di Kabupaten Padang Pariaman
Authors: Elmawati Elmawati , Wedyawati Veni 
Published: February 2020

Disasters not we can know quickly because of the damage going on that trouble getting precise information. Badan Penanggulangan Bencana Daerah Kabupaten Padang Pariaman often difficulty in process data disaster that is because there is no system quickly in process the data. With the information systems that web-based this can provide disaster victim management a quick and exact in convey information about disasters that happened to the areas Kabupaten Padang Pariaman. This system will be made in use of language programming PHP that is a programming language is open source.
REVIEW: Campaigning with passion for an 'arsenal for democracy'
Authors: Robie David 
Published: February 2020

Review of Media Ethics and Accountability Systems, by Claude-Jean Bertrand and An Arsenal for Democracy: Media Accountability Systems, by Claude-Jean BertrandThese two companion volumes by Claude-Jean Bertrand, professor emeritus of the French Press Institute at the University of Paris-2—and a predecessor of mine as Australian Press Council fellow (1996)—provide a thoughtful and stimulating insight into the public accountability of journalists and state of media credibility.
A dozen Danish cartoons and the wrath of the Muslim world
Authors: Cass Philip 
Published: February 2020

How do we understand the outrage in the Muslim world against the 12 cartoons published in the Danish newspaper Jyllands-Posten? And can we move on from anger and misunderstanding? Is there room for dialogue? It is now several weeks since the Muslim world exploded with anger at a series of cartoons originally published in Jyllands- Posten. The cartoons variously depicted the Prophet Mohammed as a terrorist and murderer, the best known of which shows him wearing a bomb as a turban. The cartoons were later re-published in a Norwegian evangelical newsletter. After they were first published a group of Danish imams approached the Danish courts, but were advised that there were no legal grounds for seeking redress. Subsequently, the imams traveled to the Middle East, taking with them a pamphlet in which they reproduced the newspaper cartoons, but added three more images which had been circulating on the internet and elsewhere. These images were entirely unrelated to the newspaper cartoons.
Brzoza w lecznictwie ludowym
Authors: GRUSZECKI ROBERT , NIKOŃCZUK IZABELA , ZAWIŚLAK GRAŻYNA , WALASEK-JANUSZ MAGDALENA 
Published: February 2020

Surowce zielarskie brzozy są łatwo dostępne ze względu na powszechne jej występowanie. Roślina ta dostarcza wielu różnych surowców stosowanych zarówno w ziołolecznictwie ludowym, jak i we współczesnej fitoterapii. W tradycyjnych społecznościach surowce te wykorzystywano jednak w znacznie szerszym zakresie. Celem pracy było przedstawienie wykorzystania surowców zielarskich z brzozy w lecznictwie tradycyjnym jako podstawy do dalszych badań nad właściwościami leczniczymi tej rośliny. W pracy analizowano wykorzystanie dwu gatunków: brzozy brodawkowatej (Betula pendula Roth.) i brzozy omszonej (Betula pubescens Ehrh.), gdyż to z nich najczęściej pozyskuje się surowce zielarskie w Polsce. Surowce te w tradycyjnej medycynie ludowej wielu krajów świata stosowano w stanie świeżym i wysuszonym, w formie naparów, wywarów, ekstraktów alkoholowych i wodnych. W tradycyjnych społecznościach surowce brzozy znalazły zastosowanie w leczeniu bardzo wielu schorzeń, spośród których najczęściej wymieniano choroby układu moczowego, reumatyzm, schorzenia dermatologiczne, kardiologiczne, choroby przewodu pokarmowego, osłabienia, przeziębienia. Surowce te wykorzystywano nawet w leczeniu chorób zakaźnych (czerwonka, tyfus, gruźlica) i nowotworowych.
Molecular Models in Chemistry Education at University and Upper Secondary School - Structure of Amides
Authors: Kolář Karel , Doležal Rafael , Karásková Natálie , Maltsevskaya Nadezhda V. , Křížková Šárka 
Published: February 2020

Abstract
Molecular models derived from results of quantum-chemical calculations present an important category of didactic instruments in chemistry education in upper secondary school and, particularly, at university. These models can be used especially as tools for supporting the students’ understanding by visual learning, which can adequately address complexity of many chemical topics, incorporate appropriate didactic principles, as well as utilize the benefits brought up by the actual information technology. The proposed molecular models are non-trivial examples of didactic application of computational chemistry techniques in illustration of electron interactions in amidic group, namely the interaction of the free electron pair on the nitrogen atom with the carbonyl group and also the interaction of atoms in the amide group with other surrounding atoms in the molecule. By these molecular models it is possible to explain acid-base properties of amides applying knowledge of electron density distribution in the molecules and the resulting electrostatic potential. Presentation of the structure and properties of the amides within education is important also for the reason that amidic functions are involved in many important natural substances (e.g. proteins, peptides, nucleic acids or alkaloids), synthetic macromolecular substances (e.g. Silon) or pharmaceutical preparations (e.g. paracetamol). Molecular models then serve to support better understanding of the structure of these substances and, in relation to it, their properties.
Didactic Capacity of Selected Czech and Russian Organic Chemistry Textbooks
Authors: Karásková Natálie , Doležal Rafael , Maltsevskaya Nadezhda , Kolář Karel 
Published: February 2020

Abstract
This article presents the results of analysis of Czech and Russian textbooks intended for organic chemistry teaching at upper secondary schools. In principle, the estimation of textbook didactic capacity is based on decomposition of the textbook content into a set of different objects and their subsequent frequency analysis. In this study, three Czech textbooks and three Russian textbooks were characterized by particular and total didactic capacity coefficients. The indifference of the calculated didactic capacities was tested by chi-square statistics at a level of significance α = 0.05. The results show that the selected Czech and Russian textbooks are not significantly different.
Isotherm Studies of Malachite Green Removal by Yarn Processing Sludge-Based Activated Carbon
Authors: Tang Shu Hui , Zaini Muhammad Abbas Ahmad 
Published: February 2020

Abstract
Adsorption is an effective wastewater treatment technique which has been widely used in various industrial applications. However, the high operation cost involving commercial activated carbon in industrial processes is the main drawback. Sewage sludge is an auspicious precursor of activated carbon owing to its high carbon content, rich functional groups, low cost, high availability and abundance. This research was aimed to establish the feasibility of converting yarn processing sludge into activated carbon by KI + KOH activation and char at 700 °C for 1 h. The effect of preparation strategies on the properties of sludge-based adsorbents (SBA) was reviewed. The applications of SBAs in the removal of dyes and model pollutants were discussed. The results from this study proved that the preparation of yarn processing sludge-based activated carbon via KI + KOH activation is feasible and effective in the adsorption of dye. This paper provides further insight on the preparation methods of sludge-based adsorbents and dye wastewater treatment using these adsorbents.
Disparities in Urban Tourism in the Czech Republic
Authors: Vaníček Jiří 
Published: February 2020

Abstract
There are not many European countries with such a significant share of the capital city on tourism (especially incoming tourism) as the Czech Republic. The number of foreign tourists grows significantly in the Czech Republic and so does the share of Prague. All marketing campaigns aiming to get foreign tourists beyond Prague ended inefficiently. The share of Prague on the number of tourists accommodated in standard accommodation facilities per the total number of tourists in the Czech Republic is 62%. Prague is also the only region with a higher number of foreign tourists in comparison with the number of the Czech tourists (85% of tourists in Prague are foreigners). Furthermore, the offer of sharing economy in the field of accommodation in Prague also exceeds the offer of other Czech cities. Prague is therefore struggling with overtourism in some attractive areas and must deal with unsustainable development.
Social and Political Thought in the Russian Religious Renaissance
Authors: Ladouceur Paul 
Published: February 2020

Abstract
Before the Russian revolution of 1917 and subsequently in exile, the leading figures of the Russian religious renaissance were deeply engaged in social and political questions. Vladimir Soloviev, Sergius Bulgakov and Nicolas Berdyaev in particular presented Christian philosophies and theologies as alternatives to secular philosophies which captivated the Russian intelligentsia in late imperial Russia. Their thinking was consistent with evangelical precepts and the social thinking and actions of the early Fathers of the Church, even if not always couched in explicitly Christian terms. Major Christian theological and spiritual principles inspiring their theologies include the equality of all human beings, the evangelical imperative of love of neighbour as a reflection of love of God, the uniqueness of the human person, and freedom. Social and political thinking during the Russian religious renaissance provided a solid, if inadequately recognized, basis for the development of later Orthodox social and political theology.
The Ultranationalist Newsroom: Orthodox “Ecumenism” in the Legionary Ecclesiastical Newspapers
Authors: Biliuță Ionuț 
Published: February 2020

Abstract
The present paper discusses the anti-Greek Catholic and anti-Jewish attitudes of some Orthodox clergy as reflected in the interwar legionary press. By making reference to several newspapers (Legiunea, Predania, Glasul Strămoșesc) the article sheds light on the political mobilization of the legionary Orthodox clergymen and intellectuals in support of the xenophobic agenda regarding other denominations (especially the Greek-Catholics) and religious groups (the Jews) in interwar Romania.
Orthodox Christianity and the State: the Relevance of Globalization
Authors: Roudometof Victor 
Published: February 2020

Abstract
Orthodox Christianity remains relatively understudied and its scholarly analysis still suffers from widespread misconceptions. This article’s opening section is devoted to de-bunking of past biases, as these emerge in conventional or traditional modernist images of Orthodoxy in scholarship. Next, the article lays out a global perspective and argues that such a perspective can contribute greatly toward a different understanding of the relationship between Orthodox Church and politics. It proposes a series of distinct church-state patterns as observed in Orthodox pre-modern and modern societies. The variety of these arrangements strongly suggests the need to overturn past interpretations and to accept the basic premise that Orthodox Christianity has a multifaceted relationship to society and culture – as well as to accept the notion that, from within the lenses of historical globalization, Orthodoxy has experienced historical change and that its current version is in fact not the relic of an unchanged tradition but rather the product of social change and of adjustment to globalization.
Love, Life and Politics: Comparing Lutheran and Orthodox Political Theologies
Authors: Papanikolaou Aristotle 
Published: February 2020

Abstract
In this essay, I want to engage Luther’s political theology by engaging Michael Laffin’s recent book, The Promise of Martin Luther’s Political Theology. I am fully aware of the debates around Luther’s political theology and realize that Laffin’s is only one interpretation, but it is a very nuanced interpretation that offers compelling arguments. I then want to illustrate affinities between Laffin’s interpretation of Luther and my own Orthodox political theology based on the realism of divinehuman communion, or theosis. I then want to end by relating this comparison to what is arguably one of the most pressing questions of Christian political theology – the Christian’s relation to political liberalism.
The Political/Civil Role of Religion: What Narrative is Appropiate for the EU?
Authors: Rothholz Walter 
Published: February 2020

Abstract
This article introduces an empirical comprehension of secularization – disavowing Max Weber’s grasp – which is based on the premise that a structural similarity of symbols leads to their transmogrification. The structure of society remains the same in a secular society as well, in that consciousness is still affected by the same experiences. Following a brief remark on liberalism as privatizer of all highest goods, one of the consequences of secularization is exemplified. The European Union is such a liberal foundation whose self-understanding has found itself at a loss of political approval. Based on a political economy, namely on the benefit of some is the detriment of the other, the EU has overlooked that a society always shares a civil religion to which it is not possible to give up: Renouncing the sacred always denotes a profound political crisis. And a political crisis will always generate a new civil religion, of fundamental reactionary nature, and, therefore, incurring the inevitable form of an ideology.