bluuebunny/crossref_metadata_2025_split huggingface dataset:
Karakterisasi Katalis CaO dan Uji Aktivitas pada Kinetika Reaksi Transesterifikasi Minyak Kedelai
Authors: Pratigto Setiarto , Istadi Istadi , Wardhani Dyah Hesti 
Published: April 2020

Penelitian ini akan mengkaji kinetika reaksi transesterifikasi minyak kedelai dengan metanol menggunakan katalis CaO dengan parameter rasio mol reaktan terhadap konversi metil ester yang digunakan untuk menentukan persamaan kecepatan reaksi. Katalis CaO digunakan untuk reaksi transesterifikasi karena memiliki kekuatan basa yang tinggi, ramah lingkungan, kelarutan yang rendah dalam metanol. Kinetika reaksi untuk reaktor batch dihitung saat reaksi berlangsung berdasarkan rejim surface area limited yang menentukan. Tujuan penelitian ini untuk mengetahui bentuk persamaan kecepatan reaksi transesterifikasi minyak kedelai dan metanol menggunakan katalis CaO menurut metode differential reactor. Penelitian dilakukan dengan reaksi transesterifikasi minyak kedelai dan metanol dengan katalis CaO dengan variabel bebas perbandingan mol reaktan. Hasil penelitian mengemukakan metanol teradsorpsi di permukaan katalis dan trigliserida tidak teradsorpsi di permukaan katalis menunjukkan mekanisme reaksi katalitik Eley-Rideal. Persamaan kecepatan reaksi dapat digunakan dalam perancangan reaktor, sehingga hubungan antara konversi trigliserida menjadi biodiesel dengan kebutuhan berat katalis dan volume reaktor yang diperlukan dapat diprediksi. This study will examine the kinetics of the transesterification reaction of soybean oil with methanol using a CaO catalyst with the parameters of the mole ratio of reactants to the conversion of methyl esters used to determine the reaction velocity equation. CaO catalyst is used for transesterification reaction because it has high base strength, environmentally friendly, low solubility in methanol. The reaction kinetics for a batch reactor are calculated when the reaction takes place based on a decisive surface area limited regime. The purpose of this study was to determine the shape of the speed equation for the transesterification of soybean oil and methanol using a CaO catalyst according to the differential reactor method. The research was carried out with the transesterification reaction of soybean oil and methanol with a CaO catalyst with a free variable ratio of reactant moles. The results of the study revealed that methanol adsorbed on the surface of the catalyst and triglycerides not adsorbed on the surface of the catalyst showed an Eley-Rideal catalytic reaction mechanism. The reaction speed equation can be used in reactor design, so the relationship between the conversion of triglycerides to biodiesel with the required catalyst weight and the reactor volume required can be predicted.
Engineered telecom emission and controlled positioning of Er3+ enabled by SiC nanophotonic structures
Authors: Tabassum Natasha , Nikas Vasileios , Kaloyeros Alex E. , Kaushik Vidya , Crawford Edward , Huang Mengbing , Gallis Spyros 
Published: April 2020

Abstract
High-precision placement of rare-earth ions in scalable silicon-based nanostructured materials exhibiting high photoluminescence (PL) emission, photostable and polarized emission, and near-radiative-limited excited state lifetimes can serve as critical building blocks toward the practical implementation of devices in the emerging fields of nanophotonics and quantum photonics. Introduced herein are optical nanostructures composed of arrays of ultrathin silicon carbide (SiC) nanowires (NWs) that constitute scalable one-dimensional NW-based photonic crystal (NW-PC) structures. The latter are based on a novel, fab-friendly, nanofabrication process. The NW arrays are grown in a self-aligned manner through chemical vapor deposition. They exhibit a reduction in defect density as determined by low-temperature time-resolved PL measurements. Additionally, the NW-PC structures enable the positioning of erbium (Er3+) ions with an accuracy of 10 nm, an improvement on the current state-of-the-art ion implantation processes, and allow strong coupling of Er3+ ions in NW-PC. The NW-PC structure is pivotal in engineering the Er3+-induced 1540-nm emission, which is the telecommunication wavelength used in optical fibers. An approximately 60-fold increase in the room-temperature Er3+ PL emission is observed in NW-PC compared to its thin-film analog in the linear pumping regime. Furthermore, 22 times increase in the Er3+ PL intensity per number of exited Er ions in NW-PC was observed at saturation while using 20 times lower pumping power. The NW-PC structures demonstrate broadband and efficient excitation characteristics for Er3+, with an absorption cross-section (~2 × 10−18 cm2) two-order larger than typical benchmark values for direct absorption in rare-earth-doped quantum materials. Experimental and simulation results show that the Er3+ PL is photostable at high pumping power and polarized in NW-PC and is modulated with NW-PC lattice periodicity. The observed characteristics from these technologically friendly nanophotonic structures provide a promising route to the development of scalable nanophotonics and formation of single-photon emitters in the telecom optical wavelength band.
Kroncong Orchestration of Millennial Generation
Authors: Ganap Victor 
Published: April 2020

Kroncong is the urban popular music of Indonesia, which some scholars suggest was brought by Portuguese in the early sixteenth century. Kroncong becomes popular across the archipelago as accompaniment in its musical genre, theatre and film. Although popular music has long been an integral part of Indonesian cultural domain, genres such as kroncong have been overlooked by music scholars. This article aims to introduce kroncong orchestration that could be performed in an updated style for incorporating repertoire from any other genres into idiomatic kroncong, that will be adopted by the millennial generation. Therefore, the reinvention of kroncong will not only be a significant contribution to scholarship on Indonesian popular music, but it will also contribute to a wider understanding of the complexities of indigenous ethnicity, political power, social class, and gender. The orchestration that will retain its rhythm pattern and vocal ornamentation, while reinforcing the strings and winds as melodic carriers.
Pengembangan Soal Matematika Mirip TIMSS Yang Memuat Nilai Karakter
Authors: Pratama Orthio Rizki , Lutfianto Moch. , Noviartati Kurnia 
Published: April 2020

Menanamkan nilai karakter pada soal matematika menjadi salah satu cara untuk mencapai tujuan utama pendidikan nasional yaitu membentuk siswa yang berkarakter. Penanaman nilai karakter melalui soal matematika mirip TIMSS diharapkan mampu menjadi sarana untuk menghadirkan soal matematika yang memiliki nuansa karakter dan membiasakan siswa agar dapat menyelesaikan masalah matematika dalam kehidupan sehari-hari. Jenis penelitian ini adalah design research tipe formative evaluation yang bertujuan untuk menghasilkan soal mirip TIMSS yang memuat nilai-nilai karakter. Hasil yang diperoleh peneliti adalah sebanyak 17 soal matematika mirip TIMSS yang memuat nilai karakter religius, kerja keras, jujur, atau disiplin.Instill character values in math problems be one way to achieve the main goal of national education is to produce good students in character. Instilling character values through math problems seem TIMSS expected to be a means to present mathematical problems that have a character nuance and familiarize students to be able to solve mathematical problems in daily life. The type of this research is design research (formative evaluation) to produce a problems similar to TIMSS that contains character values. The results obtained by the researchers were as many as 17 math problems similar to TIMSS which contained the value of religious character, hard work, honesty, or disciplineKeywords: mathematics problems, TIMSS, character value.
Intersections between Diplomacy and Philosophy: Athens, Rome
Authors: Aleknienė Tatjana 
Published: April 2020

The political context of Greek philosophy and its political themes are the subject of numerous studies, but the relation between diplomacy and philosophy, to the best of my knowledge, has not yet been studied. In this article I examine two episodes of diplomatic missions that have left a clear mark on the history of philosophy and I try to show that the link between the history of diplomacy and the history of philosophy is neither accidental nor superficial.
Investigating Learners’ Beliefs in Learning English: A Case Study
Authors: Iswati Luluk 
Published: April 2020

ABSTRACTThe purpose of this study was to investigate the beliefs of English as a Foreign Language (EFL) learners in a mixed-ability class of a private university in Yogyakarta. Having 30 respondents who took an English class at the Language Training Centre of the university, this study mostly employed a quantitative research design, through which data were taken using the BALLI questionnaire consisting of 35 question items. To support the quantitative data, interview were conducted. The quantitative data were analyzed using a 5-point Likert-scale, while the qualitative data were verbally described. The results show that learners’ self-efficacy and expectation about learning English is low (3.20); learners’ perceived value and nature of learning spoken English is fair (3.76); learners’ beliefs about foreign language aptitude is low (3.11); learners’ beliefs in formal structural studies (3.11) is also low. Therefore, it is suggested that teachers evaluate their teaching approach and strategy in order to increase students’ motivation, confidence, and interest in learning English which can eventually promote learners’ success in learning English as a foreign language.ABSTRAKTujuan dari penelitian ini adalah untuk menyelidiki keyakinan bahasa Inggris sebagai Bahasa Asing (EFL) pada kelas dengan kemampuan campuran di universitas swasta di Yogyakarta. Dengan 30 responden yang mengambil kelas bahasa Inggris di Pusat Pelatihan Bahasa universitas tersebut, penelitian ini menggunakan metode kuantitatif, dimana data diambil menggunakan kuesioner BALLI yang terdiri dari 35 buah pertanyaan. Untuk mendukung data kuantitatif, wawancara dilakukan. Data kuantitatif dianalisis menggunakan skala Likert 5 poin, sedangkan data kualitatif dijelaskan secara verbal. Hasil penelitian menunjukkan bahwa: efikasi diri dan harapan mahasiswa dalam belajar bahasa Inggris rendah (3,20); nilai yang dirasakan mahasiswa dan sifat alamiah dalam belajar bahasa Inggris secara lisan adalah cukup (3,76); keyakinan mahasiswa tentang bakat dalam belajar bahasa asing rendah (3,11); dan keyakinan mahasiswa dalam studi struktural formal rendah (3,11). Oleh karena itu, disarankan agar dosen mengevaluasi pendekatan dan strategi pengajaran mereka untuk meningkatkan motivasi, keyakinan diri, dan minat mahasiswa dalam belajar bahasa Inggris yang pada akhirnya dapat mendukung keberhasilan mereka dalam belajar bahasa Inggris sebagai bahasa asing. How to Cite: Iswati,L. (2019). Investigating Learners’ Beliefs in Learning English: A Case Study. IJEE (Indonesian Journal of English Education), 6(2), 153-170. doi:10.15408/ijee.v6i2.14362
O modo como expressão do ponto de vista em Dom Casmurro, o romance, e Capitu, a microssérie
Authors: Monteiro Alexandre De Assis , Mousinho Luiz Antonio 
Published: April 2020

As obras Dom Casmurro, o romance, e Capitu, a microssérie possuem um modo de trânsito entre elas, operacionalizado recentemente (2008) por Luís Fernando Carvalho, que revela a adaptação do discurso verbal para o verbo visual, sem desconsiderar o fato de que todo o fornecimento de informação narrativa provém de uma única fonte, Dom Casmurro, o personagem narrador. Essa adaptação nos instiga a adentrar os meandros deste processo a fim de compreender os diferentes pontos de vista, a ilusão de verdade, as autorias narrativas propostas inicialmente pelo autor-narrador da primeira obra e em seguida, pelo adaptador-focalizador da segunda. A tese eixo que propomos é a de que a fala ostensiva do narrador do romance não foi interrompida no fluxo narrativo das imagens, a ponto de fragmentar ou comprometer os seus significados, ao contrário, preserva-os e os viola ao mesmo tempo, construindo uma nova obra e ressaltando a identidade da “outra” na qual se ampara, sem que sejam as mesmas. Para a verificação e percepção do modo dessa transição, fundamentamo-nos nas categorias narrativas atinentes a narradores e focalizadores, a partir de suportes teóricos, conceituais e literários de vasta bibliografia anexa.
Arquitetura in absentia no conto "Catedral", de Raymond Carver
Authors: Vieira Miriam De Paiva 
Published: April 2020

A écfrase, tanto como ferramenta retórica da antiguidade quanto como recurso literário, é um procedimento (inter) midiático que atua no cruzar de fronteiras entre a literatura e outras formas de manifestações artísticas, tais como pintura, escultura e arquitetura. Ao fazer uma edificação presente em uma obra literária, a écfrase é capaz de elucidar não somente espaços construídos familiares, mas também lugares nunca vistos antes. Esse é o caso de “Catedral” (1980), do autor estadunidense Raymond Carver, em que o simbolismo dos efeitos provocados pela tentativa, por parte do narrador ateu, de fazer o personagem cego ver uma obra arquitetônica religiosa, televisionada em um documentário, por meio de um desenho costuma ser lido como uma virada no pessimismo mordaz da obra do autor. Assim sendo, a partir da noção de écfrase como fenômeno midiático (VIEIRA, 2017) e do estudo de transferência de características entre mídias (ELLESTRÖM, 2010, 2014, 2017), o objetivo desse ensaio é discutir de que maneira a mídia arquitetura se faz presente (ou não) no conto “Catedral”.
Migrações e meio ambiente: desafios contemporâneos e o debate acerca dos “refugiados ambientais”
Authors: Gorgen Zeca Bruna , Cunha César Carolina 
Published: April 2020

O presente artigo tem como problema de pesquisa o seguinte questionamento: quais são as relações intrínsecas entre as mudanças climáticas e as migrações forçadas, especificamente, aliadas à compreensão de um possível refúgio ambiental? A partir dessa proposição, o referido problema se encontra dividido em duas seções de análise: a primeira, destinada a debater os aspectos ambientais que obrigam os seres humanos a migrarem, discorrendo-se acerca da emissão de gases, do degelo, dos compromissos assumidos internacionalmente pelos Estados, entre outros; já a segunda, reserva-se ao direito internacional, especificamente, apresentam-se as discussões sobre o que é um migrante, um deslocado interno e um refugiado. Por fim, as considerações finais indicam que a solução para a migração forçada, por problemas ambientais, não possui assertividade na esfera do sistema internacional atual. Logo, não há a responsabilização compartilhada como aquela pretendida pelas autoras deste estudo.
Carbohydrate antigen 19-9 levels in early acute pancreatitis
Authors: BİNİCİER Ömer , PAKÖZ Zehra 
Published: April 2020

Background and Aims: There are many etiologic factors responsible for acute pancreatitis. Carbohydrate antigen 19-9 is a well-known tumor marker for gastrointestinal malignancies, especially pancreaticobiliary cancer. Carbohydrate antigen 19-9 levels also increase benign events such as cholestasis. Therefore, the purpose of this study is to retrospectively investigate the relationship between the underlying etiologies and carbohydrate antigen 19-9 levels in patients who were hospitalized due to acute pancreatitis.
Materials and Methods: We retrospectively analyzed the data of 109 patients who had increased carbohydrate antigen 19-9 levels in the first 24 hours during hospitalization. Additionally, we divided the patients into two groups, namely biliary and nonbiliary, based on their recent diagnoses in the etiologies of acute pancreatitis.
Results: We detected increased carbohydrate antigen 19-9 levels (more than 37 U/mL) in 63 (92%) of the patients in the biliary group, and in 8 (19%) of the patients in the non-biliary group (p
In-vitro anthelmintic activity of Boswellia serrata and Aloe barbadensis extracts on Pheretima posthuma: Indian earthworm
Authors: Shelke Pallavi Sitaram , Jagtap Pradnya Nilesh , Tanpure Prajakta Rohidas 
Published: April 2020

Background: The development of anthelmintic resistance and the high cost of conventional anthelmintic drugs led to the evaluation of medicinal plants as an alternative source of anthelmintics. In the current study, in- vitro experiments were conducted to determine the possible anthelmintic effects of crude aqueous and alcoholic extracts of the resins of Boswellia serrata and leaves of Aloe barbadensis on adult Indian earthworm (Pheretima posthuma).Methods: Various concentrations (50, 100, 150 mg/ml) of each extracts were tested and results were expressed in terms of time for paralysis and time for death of worms. The activities are well compared with the standard drug Albendazole as a positive control and saline water as negative control.Results: Anthelmintic activity was observed as dose dependent manner. It was found that alcoholic extract exhibited maximum anthelmintic activity at concentration 100 and 150 mg/ml compared to standard drug Albendazole (10mg/ml) while aqueous extract show modest significant activity at concentration 150 mg/ml against worm Pheretima posthuma. All results was statistically analysed by using ‘Dunnett’s test’ one- way ANOVA; the p<0.001 were significant when compared with control and standard group.Conclusions: The present study proves the potential of combination of B. serrata and A. barbadensis as an anthelmintic drugs. Further studies are necessary to isolate and reveal the active compounds and to establish the mechanism of action.
DOES SCHOOL COOPERATIVE PROGRAM INCREASE ENTREPRENEURIAL INTENTION? A STRUCTURAL EQUATION MODELLING APPROACH
Authors: Abd Majid Norliana , Anwar Zainol Fakhrul , Afthanorhan Asyraf 
Published: April 2020

Purpose of the study: The primary purpose of this empirical research is to investigate the impact of school cooperative involvement on entrepreneurial intention among Malaysian secondary school students. The school cooperative program was introduced in Malaysia in 1968, and presently, 2421 school cooperatives are operating nationwide. Despite so, the impact of school cooperative towards students’ entrepreneurial intention remains unclear.
Methodology: This research employed the quantitative method, using a cross-sectional survey. The data collected from secondary school students in the East Coast Peninsular of Malaysia involve three states, namely Kelantan, Terengganu, and Pahang. The study employed the Covariance Based Structural Equation Modelling (CB SEM) to analyze the data using the Analysis of Moment Structure (AMOS) graphic.
Principal finding: The result shows that the students’ involvement in the school cooperative increases their entrepreneurial intention.
Applications of this study: The Malaysian government should focus on nurturing entrepreneurship in schools. The Ministry of Education (MOE) and Angkatan Koperasi Kebangsaan Malaysia (ANGKASA) need to enforce assessments on participating students to ensure the effectiveness of this entrepreneurship education program. Moreover, school administrators should support the school cooperative owing to its positive impact on students.
Novelty/Originality of this study: This research delivers the best way to increase entrepreneurial intention by measuring the impact of students’ involvement in school cooperatives. Also, the paper proposes a framework for enhancing entrepreneurial intention by clarifying the Theory of Students’ Involvement. Consequently, this research fills the previous research gap on entrepreneurial intention and lack of information on Malaysian school cooperatives.
Sobre la Enseñanza del Diseño de Indumentaria. El desafío creativo (enseñanza del método)
Authors: Doria Patricia 
Published: April 2020

La asignatura Diseño de Indumentaria es la materia troncal de la carrera de Diseño de Indumentaria y Textil. Ésta no contiene una doctrina latente, sino que se trata de aprender-haciendo. Es decir, primero se aprende a diseñar objetos de indumentaria y luego se aprende en el mismo ejercicio de ese hacer. No es un conocimiento de características discursivas, sino más bien prácticas.Los proyectos en diseño de indumentaria son simulacros de experimentación, de relación entre el material textil y los límites o contornos corporales. La enseñanza en una clase de diseño de indumentaria se desarrolla a partir del producto completo denominado el proyecto, que consta de diferentes etapas de aprendizaje. La necesidad de la concreción de este producto-proyecto es una condición ineludible para comprender el proceso proyectual. Con este trabajo, se pretenden determinar algunas consideraciones acerca de las interrelaciones entre el diseño, su enseñanza y aprendizaje, incluyendo un análisis de las etapas por las cuales transitan los estudiantes de diseño de indumentaria y textil, que le otorgan los diferentes niveles en la práctica del diseño.
GESTÃO DE RESÍDUOS DA CONSTRUÇÃO CIVIL EM SANTARÉM - PARÁ, BRASIL: REALIDADES E DESAFIOS
Authors: Sousa Bianca Mesquita 
Published: April 2020

A pesquisa teve como objetivo realizar uma análise da gestão de resíduos gerados na construção civil no município de Santarém no Pará, tendo como ponto principal a elaboração do Plano de gerenciamento de resíduos de construção civil, conforme é determinado pela Política nacional de resíduos sólidos, Lei Federal nº 12.305/ 2010. Verificou-se que a elaboração é exclusivamente por cumprimento da exigência da legislação, algumas construtoras que não possuem, relataram que ainda não elaboraram justificando pela irrelevância do Plano e disposição no Lixão do Perema e áreas de Bota Fora, o que corresponde à falta de fiscalização do que é estabelecido na resolução CONAMA N º 307/2002 onde os resíduos da construção civil não podem ser dispostos em aterros de resíduos sólidos urbanos e em áreas de "bota fora", o Plano Municipal de Gestão Integrada de Resíduos Sólidos (PMGIRS) corrobora com a falta de fiscalização e compactuando, conforme informações apresentadas no PMGIRS, os resíduos da construção civil são lançados no chamado ―Bota Fora do Santo André‖, afetando em vários pontos a qualidade do ambiente urbano.