bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengaruh Multimedia Interaktif Terhadap Prestasi Belajar Siswa Kelas IV Sekolah Dasar
Authors: Samsiyah Nur , Fajar Agil
Published: April 2021

Abstrak Bahasa Indonesia:Penelitian ini bertujuan untuk mengetahui pengaruh Multimedia Interaktif terhadap prestasi belajar siswa kelas IV tema 7. True Eksperimental design adalah metode yang digunakan pada penelitian ini. Faktor yang mendorong peneliti untuk melakukan penelitian dikarenakan rendahnya prestasi belajar siswa kelas IV di SDN 01 Ploso pada tema 7. Jumlah siswa kels eksperimen di SDN 01 Ploso berjumlah 17 dan kelas kontrol SDN 02 Ploso berjumlah 17. Teknik pengumpulan data dilakukan dengan memberikan soal tes pilihan ganda berjumlah 20 soal. Untuk pengumpulan data kelas kontrol dilaksanakan di SDN 02 Ploso. Setelah data hasil tes dianalisis menggunakan uji-t diperoleh Thitung 4.317 2.131 Ttabel. Rata-rata nilai kelas eksperimen berjumlah 81.76 sedangkan kelas kontrol berjumlah 66.18. Siswa yang lulus KKM pada kelas eksperimen lebih banyak setelah diterapkan multimedia interaktif sebanyak 16 siswa dibandingkan dengan kelas kontrol yang hanya 4 siswa, sehingga penggunaan multimedia interaktif berpengaruh terhadap prestasi belajar siswa.Abstrak in English:This study aims to determine the effect of interactive multimedia on student achievement in grade IV theme 7. True experimental design is the method used in this study. The factor that encourages researchers to conduct research is due to the low learning achievement of grade IV students at SDN 01 Ploso on theme 7. The number of experimental class students at SDN 01 Ploso is 17 and the control class at SDN 02 Ploso is 17.Data collection techniques are carried out by providing selected test questions. doubles totaling 20 questions. The data collection for the control class was carried out at SDN 02 Ploso. After the data from the test results were analyzed using the t-test, it was obtained that tcount was 4.317 2.131 t table. The average score for the experimental class was 81.76, while the control class was 66.18. There were more students who passed the KKM in the experimental class after implementing interactive multimedia as many as 16 students compared to the control class which only 4 students, so the use of interactive multimedia had an effect on student achievement.
Implementasi Pembelajaran Tematik di Sekolah Dasar Pada Masa Pandemi Covid-19 Ditinjau Dari Teori Konstruktivisme
Authors: Putri Ragil Dian Purnama , Suyadi Suyadi , Siregar Veni Veronica
Published: April 2021

Abstrak Bahasa IndonesiaPandemi COVID-19 telah merubah tatanan pendidikan di seluruh negara, termasuk Indonesia. Secara tanggap pemerintah telah mengambil sikap bahwa pendidikan harus diterapkan pembelajaran daring untuk mengurangi penambahan kasus COVID-19. Dampak dari kebijakan tersebut terhadap pendidikan antara lain berpengaruh pada kurang maksimalnya pelaksanaan pembelajaran tematik. Artikel ini bertujuan untuk memaparkan implementasi pembelajaran tematik di masa pandemi COVID-19 ditinjau dari teori konstruktivisme di SDN Pilangrejo. Metode penelitian menggunakan penelitian kualitatif jenis survei. Alat pengumpulan data yang digunakan adalah observasi, wawancara, dan dokumentasi. Subjek penelitian ini adalah siswa, guru, dan kepala sekolah. Teknik analisis data yang digunakan adalah kualitatif deskriptif. Hasil penelitian ini menemukan bahwa: 1) kegiatan apersepsi dilaksanakan oleh guru dengan memberikan pertanyaan-pertanyaan kepada siswa, 2) kegiatan eksplorasi dilakukan oleh guru dengan menyampaikan materi melalui Grup WhatsApp dan Youtube, 3) kegiatan diskusi belum maksimal dilaksanakan, dan 4) kegiatan evaluasi dilaksanakan dengan meminta siswa untuk menjawab kuis google formulir. Abstract in englishThe COVID-19 pandemic has changed the order of education in all countries, including Indonesia. The government has responded responsively to the position that education must be applied to online learning to reduce COVID-19 cases. The impact of this policy on education, among others, affects the less than the optimal implementation of thematic learning. This article aims to describe the implementation of thematic learning during the COVID-19 pandemic in terms of constructivism theory at SDN Pilangrejo. The research method used was a qualitative survey type research. Data collection tools used were observation, interviews, and documentation. The subjects of this study were students, teachers, and school principals. The data analysis technique used is descriptive qualitative. The results of this study found that: 1) apperception activities were carried out by the teacher by giving questions to students, 2 the teacher carried out) exploration activities by delivering material through WhatsApp and Youtube Groups, 3) discussion activities were not maximally implemented, and 4) evaluation activities implemented by asking students to answer quiz of Google form.
Mobilitas dan Refleksivitas: Strategi Pemuda Yogyakarta di Masa Transisi menuju Dunia Kerja
Authors: Kuslarassakti Magdalena Putri , Sutopo Oki Rahadianto
Published: April 2021

This article explains the transition process and youth strategy in Yogyakarta in the era of late modernity. Departing from the context of late modernity in Indonesia, this article applies the concept of mobility as a strategy and reflexive capacity of youth in transition. This article explores the biographical narratives of the four young final-year students in Yogyakarta. By using qualitative methods, this research applies observation techniques and in-depth interviews. The phenomenon of youth studying while preparing for the future, mainly work or/and capital accumulation towards work is a common occurrence of the youth transition in Yogyakarta. Young people respond to the uncertainties of the future and unpredictable consequences of risk through mobility and reflexive capacity as forms of capital.  Thus, based on empirical data, those two components become essential and valuable wealth to be accumulated by young people.
Praktik Pernikahan dalam Masyarakat Lokal: Agensi versus Agama
Authors: Pohan Budiman , Nurdin Muhamad Fadhil
Published: April 2021

This study aims to describe the dialectical process between local agents and religious structures in the practice of marriage in Padang Sidempuan. The research method is qualitative descriptive with a case study design that focuses on narrating the objective conditions of agent and structure duality. Informants were chosen purposively, supported by observational data, interviews, and documentation. Data analyzed through the process of collection, reduction, exposition, verification, and conclusion. The results showed that: 1) Conceptually, the practice of marriage experienced practical distortions that were configured through consensus of sharia and local elites; 2) the practice of marriage is a phenomenon of the duality of agents and structuring each other; 3) agent habitus is dominated by Mandailing culture through power relations and surplus capital of the local elite compared to the sharia procedure of religious structure. However, the competence of agents is able to compress marital rules into semi-complex; 4) the importance of promoting religious habituation strategies through internalization and dissemination of alternative sharia marriage practices.
Aisnusantara: Kontribusi Santri Membangun Narasi Damai di Era Digitalisasi Media
Authors: Illiyyun Naili Ni'matul , Anshori Ahmad Afnan , Suyanto Helmi
Published: April 2021

Instagram has become a new lifestyle in recent years. Instagram has created a society without borders because its users and followers are not limited to places. Instagram users post creative photos and videos on their accounts not only for advertising but also network orientation. Millennial generation tends to use the internet in all aspects of life. This paper aims to pay attention to: 1) How about the model and strategy of the Millennial Muslim network in aisnusantara; and 2) How they explain the importance of religious moderation in digital media. This qualitative research uses a netnographic approach based on data from the @aisnusantara Instagram account. With the ethno-semiotic method, this research reveals that: 1) Aisnusantara uses a networking management model from the national to regional levels, and has an annual meeting, namely the Kopdarnas which has an agenda to discuss various issues related to national and religious affairs for the millennial generation. 2) Aisnusantara campaigned for Islamic preaching inclusively through Instagram, for example against extremism on social media, by offering alternative narratives to counter extremism by campaigning for peaceful Islam based on religious moderation.
Utilization of hydrochar derived from waste paper sludge through hydrothermal liquefaction for the remediation of phenol contaminated industrial wastewater
Authors: Marx Sanette , van der Merwe Karina
Published: April 2021

Hydrothermal liquefaction derived hydrochar produced from industrial paper sludge was used as an adsorbent to remove phenol derivatives from an industrial wastewater stream. Removal efficiency for phenol was determined using synthetic solutions (10–150 ppm) using batch adsorption experiments at a constant solution pH (8), temperature (25 ± 2 °C) and rotary speed (150 rpm). The adsorption of phenol onto hydrochar followed a Freundlich isotherm and could be described with pseudo-second-order kinetic models. Analysis of the adsorption mechanisms showed that particle film mass transport was the rate-determining step in the adsorption process. A COD removal efficiency of 31 ± 1% was achieved for the industrial wastewater stream. All phenol components in the wastewater stream could be removed, but not all organic acids and cyclic ketones. The performance of the paper sludge-based hydrochar compared well with that of activated carbon (44% COD removal). The final phenol concentration in the wastewater stream was below the acceptable phenol concentration for industrial effluents (1 mg/L). The results show that paper sludge can be converted to a valuable marketable commodity that could reduce waste management costs for a paper mill, while also reducing the cost of expensive adsorbents.
Dinâmica florestal em floresta ombrófila mista secundária e sistema silvipastoril
Authors: Talyta Mytsuy Zanardini Galeski Sens  , Jaqueline Aparecida Schran  , Ana Paula Vantroba  , Iris Cristina Bertolini  , Luciano Farinha Watzlawick  , Sebastião Brasil Campos Lustosa
Published: April 2021

Avaliou-se a dinâmica florestal, em termos de incrementos, ingresso e mortalidade, de duas áreas, uma de floresta secundária e outra sob sistema silvipastoril, no município de Turvo (PR). Para o levantamento, foram medidas parcelas permanentes totalizando 1,68 e 1,8 ha, respectivamente. Todos os indivíduos com diâmetro à altura do peito maior que 5 cm foram considerados. Utilizou-se o centro de classe para análise das espécies por meio da cadeia de Markov. No ano de 2018, a floresta secundária apresentou 1.531 ind./ha-1, distribuídos em 33 famílias, 52 gêneros e 69 espécies. Já o sistema silvipastoril apresentou 594 ind./ha-1, com 22 famílias, 31 gêneros e 43 espécies. A distribuição diamétrica entre as áreas mostrou diferenças no número de indivíduos nas classes de 5 a 20 cm. O incremento de 2012 a 2018 foi de 6,11 m2 ha-1 na floresta e de 5,33 m2 ha-1 no silvipastoril. Concluiu-se que as áreas apresentam regeneração natural, evidenciada pelo padrão de distribuição diamétrica, e, apesar de ter menor número de ingressos, a área silvipastoril teve incremento periódico superior ao da área de floresta secundária. A área silvipastoril é prejudicada por ações antrópicas, de animais e climáticas, fatores que acentuam ainda mais a necessidade de estratégias de manejo para a sua conservação.
TECNOLOGIA DE MATERIAIS APLICADA AOS PRODUTOS DE CERAMISTAS DO CABO DE SANTO AGOSTINHO (PE)
Authors: Tibério Macêdo Tabosa  , Ana Maria Andrade  , Virgínia Cavalcanti  , Germannya D’Garcia
Published: April 2021

Este artigo relata o desenvolvimento e o teste de duas massas cerâmicas feitas de resíduos industriais cerâmicos para a produção de produtos artesanais no Centro de Artesanato Arq. Wilson Campos Júnior. O processo de transferência de tecnologia de materiais para os ceramistas do Cabo de Santo Agostinho é uma ação do Laboratório de Design O Imaginário, da Universidade Federal de Pernambuco (UFPE), com o objetivo de ampliar o mercado consumidor de cerâmica utilitária artesanal, bem como seu valor agregado. As massas desenvolvidas foram caracterizadas por análise química e microscopia eletrônica de varredura (MEV), além de ensaios cerâmicos normatizados: retração linear total, absorção de água, módulo de ruptura à flexão, perda ao fogo e cor após queima. De acordo com os resultados, observouse que a inserção de diferentes percentuais do resíduo de cerâmica industrial na argila natural melhorou suas propriedades e atenderam aos requisitos técnicos e estéticos para a fabricação da cerâmica artística e de utilitários de mesa.
INOVAÇÃO SOCIAL APLICADA À GESTÃO DE RESÍDUOS DA CONSTRUÇÃO CIVIL
Authors: Mayke da Rosa Herbst  , Luiz Melo Romão
Published: April 2021

O setor da construção civil no Brasil é responsável por 50% do total de resíduos gerados na sociedade e perde cerca de 8 bilhões de reais ao ano por deixar de reaproveitar a maior parte desses recursos, ao mesmo tempo em que agride o meio ambiente, por conta do descarte irregular dos resíduos. O presente estudo analisa a viabilidade de uma solução de software mobile, com o intuito de fomentar a reciclagem e o compartilhamento desses resíduos.
ANÁLISE SOBRE A DIGITALIZAÇÃO TRIDIMENSIONAL DE INSETOS PRESERVADOS A SECO
Authors: Laura Moura  , Milton Vieira
Published: April 2021

Este artigo analisa o potencial da tecnologia de digitalização 3D como ferramenta no auxílio à preservação, à difusão e ao estudo de insetos conservados a seco em museus, revisa alguns métodos de aquisição de modelos e discute o processo desde a aquisição física até o modelo digital final. Em virtude das dimensões e superfícies de difícil representação encontradas na maioria dos insetos, esses espécimes necessitam de métodos específicos para digitalização. Por essa razão, por meio de uma metodologia de pesquisa exploratória e bibliográfica, efetuou-se primeiramente um levantamento de trabalhos já realizados na área de digitalização de acervos museográficos, e posteriormente foram analisados métodos para digitalização de insetos demarcando suas características e procedimentos. Com isso, foi possível analisar e apontar alguns aspectos fundamentais no que tange à digitalização 3D de insetos.
APLICAÇÃO DO RGT PARA A AVALIAÇÃO DE PRODUTOS: VIABILIDADE, PROPOSIÇÕES E DESDOBRAMENTOS
Authors: André Leonardo Demaison  , Esliany Reis Cantanhede  , Isaelma Giullia Soares  , Luiz Adriel Oliveira  , Rodolfo Nucci Porsani  , Luis Carlos Paschoarelli
Published: April 2021

Este estudo teve como objetivo analisar o desempenho da aplicação do método RGT (Repertory Grid Technique), proposto por Kelly (1955), para a avaliação de produtos na área do design, trazendo observações e propondo possíveis “melhorias” para a viabilidade da sua aplicação. Fundamentado na teoria dos construtos pessoais, o RGT permite aos participantes que utilizem suas próprias dimensões avaliativas espontaneamente, com sua própria linguagem, de acordo com a importância que dão a cada uma delas. Para a análise, observou-se a aplicação do método, em um teste laboratorial com escovas de dentes, a 11 estudantes de diferentes áreas de conhecimento, sendo seis deles do curso de Design da Universidade Federal do Maranhão. Após a análise dos pontos observados durante a aplicação e discussões a respeito destes, foi possível destacar pontos positivos e negativos acerca do teste e do método aplicado, assim como sugerir mudanças e desdobramentos do estudo.
Static Performances of Timber- and Bamboo-Concrete Composite Beams: A Critical Review of Experimental Results
Authors: Deresa Simret T. , Xu Jinjun , Demartino Cristoforo , Minafò Giovanni , Camarda Gaetano
Published: April 2021

The use of composite beams made with traditional concrete and bio-based materials (such as timber and bamboo) is a valuable solution to reduce the environmental impact of the building sector. Timber-Concrete Composite (TCC) beams have been used for decades in structural applications such as new buildings, refurbishment of old timber structures, and bridges. Recently, different researchers suggested composite beams based on engineered bamboo, commonly named Bamboo-Concrete Composite (BCC) beams. This study presents a systematic comparison of structural performances and connection behavior of TCC and BCC beams under short-term static load. TCCs beams are compared to BCC ones using similar shear connectors. The most important aspects of the two composite systems are compared: mechanical behavior of connectors and structural behaviors of full-scale composite beams (e.g., failure modes, connection stiffness, connection shear strength, ultimate load-carrying capacity, maximum deflection and composite efficiency). This comprehensive review indicates that BCC beams have similar or even better structural performances compared with TCC.
Technical Efficiency of Cabbage Farming (Brassica oleracea) With Stochastic Frontier Analysis (SFA) Approach in Purwodadi - Pasuruan
Authors: Miskiyah Suaibatul , Syafrial Syafrial , Sujarwo Sujarwo
Published: April 2021

This study was aimed to analyze the factors affecting the cabbage production, the level of technical efficiency of cabbage farming, the factors affecting technical inefficiency, and the profits of cabbage farming. The location was determined purposively on the basis that it is the center of vegetable cultivation. The respondents were 67 farmers chosen using the Yamane formula sampling technique. This research used frontier software 4.1 data analysis method with Maximum Likelihood Estimation (MLE) approach and Tobit regression. The results showed that land, labor, seeds, organic fertilizers, urea fertilizers, za fertilizers and npk fertilizers were real influential factors. Meanwhile, pesticides were insignificantly influenced. The mean technical efficiency in the research site was 0.903 for the distribution of technical efficiency, so that the cabbage production was rated as high efficiency. Age, education and credit access dummy contributed a major impact on technological inefficiency. The income from cabbage farming per planting season per hectare was Rp35,524,300 from cash costs and Rp31,051,800 from total costs.
Analisis Laju Infiltrasi dengan Metode Horton Pada Sub DAS Cikeruh
Authors:   Universitas Padjajaran, Arianto Wahyu , Suryadi Edy ,   Universitas Padjajaran, Perwitasari Sophia Dwiratna Nur ,   Universitas Padjajaran
Published: April 2021

Infiltrasi merupakan proses masuknya air ke dalam tanah melalui pori-pori tanah yang dipengaruhi oleh tekstur tanah, kemiringan lereng, tata guna lahan dan lainlain. Pada Sub DAS Cikeruh terjadi alih fungsi lahan dan defisit air sehingga perlu dilakukan konservasi air. Penelitian ini bertujuan menganalisis laju infiltrasi berdasarkan tekstur tanah dan kemiringan lereng pada Sub DAS Cikeruh dengan metode Horton dan mengetahui faktor-faktor yang mempengaruhi laju infiltrasi di Sub DAS Cikeruh. Alat yang digunakan yaitu single ring infiltrometer. Metode yang digunakan dalam perhitungan adalah metode horton, dimana untuk pengukuran laju infiltrasi menggunakan metode infiltrometer. Hasil pengukuran dan perhitungan diketahui bahwa laju infiltrasi konstan tertinggi terdapat pada kemiringan lahan landai, tekstur tanah lempung liat berdebu dan jenis tanah kambisol yaitu 78.61 cm/jam (sangat cepat) dengan persamaan Horton 42.4+527.6e-0.766t. Laju infiltrasi konstan terendah terdapat pada kemiringan lahan datar, tekstur tanah liat dan jenis tanah gleisol yaitu 1.12 cm/jam (agak lambat) dengan persamaan Horton 0.8+59.2e-1.49t
Desain Sistem Otomatisasi Pengendalian Suhu Rumah Kaca Berbasis Web Pada Budidaya Tanaman Tomat
Authors:   Universitas Padjajaran, Nusantara Endryaz Vergian , Ardiansah Irfan ,   Universitas Padjajaran, Bafdal Nurpilihan ,   Universitas Padjajaran
Published: April 2021

Pengendalian iklim mikro sangat penting dalam budidaya tanaman, karena kondisi yang tidak sesuai dapat mempengaruhi hasil panen. Variabel yang menjadi indikator dalam iklim mikro rumah kaca salah satunya adalah suhu. Suhu rumah kaca dapat dideteksi oleh sensor dan dikendalikan dengan cara mengeluarkan udara panas yang dengan exhaust fan. Penelitian ini bertujuan membuat sistem otomatisasi rumah kaca dengan kipas yang beroperasi secara otomatis untuk mengendalikan suhu dan dapat dipantau melalui website yang telah didesain sebelumnya. Pada tahap pertama, dilakukan perancangan sistem mekanis pengendali suhu berupa kipas, sensor suhu, sensor instensitas cahaya, mikrokomputer dan relay. Kemudian, tahap berikutnya adalah pembuatan website. Website dibangun dengan bahasa pemgrograman PHP dan HTML serta MySQL untuk database. Website diintegrasikan dengan alat yang berada di lapangan, sehingga pengontrolan sistem otomatisasi dapat dilakukan secara mobile. Hasil penelitian menunjukan bahwa kipas dapat menurunkan dan menahan suhu rumah kaca. Data iklim mikro dapat ditampilkan dan diakses melalui website serta suhu minimal kipas untuk beroperasi dapat diatur melalui website sesuai dengan kebutuhan tanaman. Faktor yang mempengaruhi suhu rumah kaca adalah UV index. Semakin tinggi UV index dapat menyebabkan suhu meningkat. Saat UV index mencapai angka 10, suhu didalam rumah kaca masih dapat diturunkan hingga ± 3 ℃, jika UV index >10, suhu tetap dapat diturunkan dalam angka yang lebih kecil.
Uji Kinerja dan Analisis Ekonomi Mesin Penyosoh Hanjeli (Coixlacryma-jobi L) TEP-0519
Authors:   Universitas Padjadjaran, Alifazza Raka Rabean , Yusuf Asep ,   Universitas Padjadjaran, Sugandi Wahyu Kristian ,   Universitas Padjadjaran, Thoriq Ahmad ,   Universitas Padjadjaran
Published: April 2021

Ketersediaan sumber pangan menjadi salah satu masalah utama di dunia, khususnya di negara berkembang termasuk Indonesia. Salah satu serealia yang potensial dan memiliki prospek yang baik untuk dikembangkan yaitu hanjeli (Coix lacryma- Jobi L.). Selama ini pemanfaatan hanjeli masih terbatas pada pembuatan olahan pangan tradisional seperti bubur, tape, dan nasi hanjeli. Masalah dalam pemanfaatan biji hanjeli adalah kulit luarnya yang keras, sehingga sulit untuk dipecahkan. Laboraturium Alat dan Mesin Pertanian Unpad telah merancang mesin penyosoh hanjeli TEP-4 dengan kapasitas 1.31 kg/jam dengan efisiensi mesin 31.43%. Kemudian dilakukan modifikasi pada tahun 2019 menjadi mesin penyosoh hanjeli TEP-0519. Penelitian ini bertujuan untuk menguji kinerja dan analisis ekonomi mesin penyosoh hanjeli TEP-0519 untuk mengetahui kelayakan mesin secara kinerja dan ekonomis. Hasil pengujian menunjukan nilai kapasitas aktual 48.156 kg/jam, efisiensi mesin 95%, kebutuhan daya aktual 0.620 kW, energi spesifik 46.462 kJ/kg, rendemen penyosohan 80.260%, tingkat kebersihan sosohan 79.975%, tingkat getaran 4.673 m/s sampai dengan 6.913 m/s, tingkat kebisingan 85.367 dB. Hasil analisis ekonomi menunjukan biaya pokok produksi penyosohan sebesar Rp 1 058.92/kg, titik impas usaha setelah memproduksi 16 024.069 kg hanjeli, nilai NPV > 0 yaitu Rp 1 155 243 550.00, B/C ratio > 1 yaitu 4.574, nilai IRR > suku bunga MARR (7%) dengan nilai IRR yaitu 39.325%, dan periode pengembalian modal pada awal tahun pertama (0.042 tahun). Berdasarkan hasil uji, mesin ini dapat menyosoh hanjeli sesuai SNI dan layak secara ekonomi.
Dual Function of Silver Nanoparticles as Matrix Extracell Removal and Antimicrobial Agent in Polymycrobial Biofilms
Authors: Yasinta Mei Shirli , Ginawati Hera Lisna , Arum Nira Ambar , Hikmah Harini Nur , Sumarsih Sri , Fahmi Mochamad Zakki , Baktir Afaf
Published: April 2021

Candida albicans often form polymicrobial biofilms along with pathogenic microbes. Silver nanoparticles (AgNPs) were well known to have strong antimicrobial activity. However, their effect on polymicrobial biofilms and the mechanism has never been reported. This study aimed to synthesize AgNPs and study their effects on polymicrobial biofilm represented by C. albicans–E. coli biofilm. Polymicrobial biofilms, formed by clinical isolates of C. albicans and E. coli, were developed from the standardized suspensions of each strain by culturing flat-bottom 96-well microtiter plates for 48 h, then treated with AgNPs. Cell viability was assessed using the tetrazolium salt reduction assay; the extent of biofilm formation was measured by crystal violet staining. AgNPs reduced the polymicrobial biofilm in two ways: by degrading the extracellular matrix and killing both C. albicans and E. coli. The results showed AgNPs is a potential new approach for developing potent anti-biofilms.
Development of Voltammetry Analysis Method of Copper Metal Ions by Solid-State Membrane with Carbon Nanotube
Authors: Suyanta Suyanta , Sunarto Sunarto , Padmaningrum Regina Tutik , Karlinda Karlinda , Md. Isa Illyas , Rahadian Rahadian
Published: April 2021

This study was aimed to develop a method for metal analysis in continuous integration using voltammetry techniques. The research subject was copper(II) ions. The objects of research were linearity, scan rate, repeatability of readings, and the presence of Cu(II) levels in well water samples. In this study, a selective electrode was developed with a solid membrane voltammetry system using differential pulse voltammetry measurement. The results showed the regression line of voltammetry method, y = 10.265 ln (x) + 330.47, with a correlation value of 0.9654, the optimum scan rate was 10 mV/s, and within five repetitions of each measurement for one electrode, it showed good repeatability. Meanwhile, the result of regression with the UV-Vis spectrophotometric method for Cu(II) was y = 0.12386x + 0.00879 with a correlation value of 0.9943. The voltammetry method was found to be much better than the UV-Vis method because it was able to be used for analysis up to a concentration of 6.35 × 10–4 ppm (or 1.00 × 10–11 M), while the UV-Vis method was only able to analyze up to 1.5 ppm (or 2.36 × 10–5 M).
Formulation and Characterization of a Kinetically Stable Topical Nanoemulsion Containing the Whitening Agent Kojic Acid
Authors: Yun Gan Yi , Azzanizawaty Yahya Nur , Abdul Wahab Roswanira , Abdul Hamid Mariani
Published: April 2021

The research was carried out to synthesize a stable kojic acid (KA) encapsulated nanoemulsion as a whitening agent for topical skin usage. In this study, the oil-in-water (O/W) KA nanoemulsion was formulated using integrated low and high energy methods that combined ultrasonic and hot temperature inversion methods. Several different combinations of parameters were screened, viz. xanthan gum amount (1.0 to 2.0 g), kojic acid (KA) amount (0.5 to 1.5 g), and surfactant-to-water ratio (1:10.75 to 1:4.875), to prepare a stable KA nanoemulsion. The identified best parameters to design the O/W KA nanoemulsion were then subjected to different stability tests: storage and pH stability (freeze-thaw and centrifugal tests). Results revealed that the Trial 6 formulation, with the highest ratio of Tween 80 to water (1:4.875 v/v), yielded the best polydispersity index at 0.255 ± 0.006 with an average particle size of 90.57 ± 1.401 nm. The formulation retained the recommended pH range (pH 4.95–5.18) for topical skin applications within six-week storage under room condition. The nanoemulsions were also kinetically stable as proven by the absence of phase separation after the centrifugation, freeze-thaw cycle, and storage temperature (2 and 25 °C) tests, except at the 37 °C three-week extended storage. The results collectively showed that the formulated O/W KA nanoemulsion is suitable for topical application on human skin.
Study of the Electrochemical Behavior of Merocyanine and Merocarbocyanine Salts and Their Transformation into Π-Electron Donor Molecules, Namely Tetrathiatetraazafulvalenes
Authors: Khiat Manel , Zradni Fatima-Zohra , Kasmi-Mir Souad , Baeza Alejandro
Published: April 2021

An electrochemical study using the cyclic voltammetry method was carried out on some previously prepared merocyanines salts, namely thiazolideniumsulfonate salts 5a-b, and thiazolidenium chloride salts 6a-b, and merocarbocyanines salts, namely alkylidenthiazolidenium sulfonate salt 5c, and alkylidenthiazolidenium chloride salt 6c. These salts are transformed by dimerization in situ in a voltammetric cell into tetrathiatetraazafulvalenes (TTTAFs) 7a-b, 7’a-b, 8c, and 8'c supposed to be π-electron donor molecules due to the existing conjugation in their structure. The structure of all new chemically synthesized molecules was confirmed by IR, 1H-NMR, 13C-NMR, and MS. The transformation of salts into TTTAF was confirmed by a reversible voltammogram curve and the variation of observed potentials.
The Flouting of Conversational Implicature in the Headlines and Taglines
Authors: Kartika Aninda Dampit Laila
Published: April 2021

This research attempts to describe the kinds of flouting of Grice‟s Cooperative Principle maxims and explain the type of maxim mostly and least flouted in the headlines and taglines which are found in two magazines, Travel+Leisure and Wine Enthusiast. It is also aimed to see whether the headlines and taglines are able to describe the products or services. This study is presented within the framework of pragmatics. The result shows from 60 data found, 14 of the headlines and taglines in the Travel+Leisureand 16 in Wine Enthusiast magazine are mostly identified flouting the combination of maxims; maxim of Quantity and Quality. In addition, the maxim of Quality and the maxim of Manner are least flouted by the headlines and taglines in both magazines. The result also shows that the headlines and taglines are unable to fully describe the products or services unless the body copy is also provided.
The Translation of Idioms in Rowling’s "Harry Potter and the Prisoner of Azkaban" into Indonesian
Authors: Putri N. Mustika Pratiwi
Published: April 2021

This study analyzes the idioms and its translation strategies used in novel Harry Potter and the Prisoner of Azkaban. RThe rsearcher classifies the translation strategies by using accuracy analysis. The result of this research shows that there are three strategies used by the Indonesian translator. The first strategy is idiom to idiom, which means transferring idioms in English into idioms in Indonesian. This method is used when two idioms, in both English and Indonesian, contain the same form and meaning. Second method is paraphrase, which means transferring idioms in English directly into its real meaning in Indonesian. This strategy is the most frequently used considering the fact that it is very difficult to find idioms in Indonesian that has the same meaning and form with the idioms in English. The third method is literal translation. In some cases, idioms in English can be literally translated. This kind of case is specifically occurs when an idiom happens to be part of a dialogue or informal sentence.
In-Equivalent English–Indonesian Translation of Commissive Utterances in Some American Popular Films
Authors: Wisesa Anindita
Published: April 2021

This research attempts to investigate the in-equivalent English into Indonesian translation of commissive utterances in eight American Popular Films. The data used in this research are 34 English commissive utterances and its Indonesian in-equivalent subtitle collected from Easy A, Frozen, Iron Man 2, Black Swan, The Hunger Games, The Dark Knight Rises, Crazy Stupid Love, and Pitch Perfect. In particular, it aims to analyze the in-equivalent English-Indonesian translation of commissive utterances found in the films and to propose the equivalent Indonesian translation.The 12 data representatives chosen are classified into four types of speech acts: direct, indirect, literal, and non-literal. Each of the data is analyzed qualitatively based on the context, Grice’s maxims of cooperative principle: quantity, quality, relevance, and manner, and Brown and Levinson’s politeness strategies: positive and negative. Then, the equivalent translation is proposed with concerning the style of the conversation too.Based on the findings, the main problem that causes in-equivalent translation is because the cultural differences between country of source language and target language that affect the translation product that can produce pragmatically in-equivalent translation product.
Count Olaf’s Antisocial Personality Disorder in Handler’s a Series of Unfortunate Events
Authors: Atikah Fadhilah
Published: April 2021

This research discusses the psychological condition of the central character of Daniel Handler’s novel The Series of Unfortunate Events. The focus on this research is to identify and analyze Count Olaf’s personality disorder.This research applies psychological theory from the Diagnostic and Statistical Manual of Mental Disorders, fourth edition (DSM-IV-TR). To support the analysis, the library research method and analytical descriptive method are applied alongside with supported articles, interviews, and reliable website.The result of this research shows that Count Olaf has a personality disorder called antisocial personality disorder. Antisocial personality disorder is also known as psychopathy, sociopathy, or dyssocial personality.
Apology Strategy Used by the Characters in Four Cartoon Movies
Authors: Larasati Devy Putri
Published: April 2021

This article discusses apology expressions in four cartoon movies. The goals are to describe the strategy of apology and explain how the utterances of apologies are affected by familiarity. The research collected the data from dialogues that consist of apology in Monsters University, Frozen, Mulan, and Mulan II. In analyzing the data, it followed five steps: (1) finding and understanding the context of the utterances of the apology expression in order to understand the speaker’s utterances; (2) identifying and describing the utterances based on the category of apology strategy; (3) analyzing the data based on the theory of apology strategy by Olshtain & Cohen; (4) analyzing the use of apology influence by familiarity; (5) making conclusion based on the results of the data analysis.The results show that two apology strategies, an expression of an apology and an explanation or account of the situation, dominate the ranks. They are then followed by an acknowledgment of responsibility, and an offer of repair, and a promise of forbearance. Meanwhile, the relation between the speakers also influence the use of apology.
The Case of the Sidekick: The Roles of Dr. John Watson in Sherlock Holmes Canon by Sir Arthur Conan Doyle
Authors: Zahroh Adiba Qonita
Published: April 2021

sidekick in literature is perceived as a supporter of a hero or a man-behind a hero. However, it does not always work that way. In Sherlock Holmes canon, there can be found a well-known dr. John Watson who acts differently as a sidekick for Sherlock Holmes as a protagonist of the stories. Throughout the canon, Watson does not merely act as a supporter or a man-behind who just follows Holmes’s moves. In many occasions, Watson contributes varied significant things in supporting Holmes through some roles he possesses. Moreover, what Watson contributes is found out to be influential to Holmes. Therefore, it can be seen that being a sidekick can do other things apart from following the hero all the time.Based on the facts about Watson’s contributions, this paper is conducted to examine the roles dr. John Watson as a sidekick. The data used in the research are 56 short stories and four novels of Sherlock Holmes bundled together in Sherlock Holmes canon. The method of collecting the data is executed through intensive reading, mapping out the roles of dr. John Watson found during the reading process, and analysing the collected data.Since the focus of this paper is about dr. John Watson’s roles and their influences towards Sherlock Holmes, objective theory is chosen to be employed. Related to the theory, this paper offers the explanation of intrinsic elements with focus on character element and sidekick character.
Racial Discrimination in Kathryn Stockett’s "The Help"
Authors: Maurilla Amalia Putri
Published: April 2021

Kathryn Stockett’s novel titled The Help is a narrative novel about the lives of African-American maids named Aibileen and Minny who received discriminative treatments from the white masters around 1960s in Southern United States. This research aims to answer two objectives, which are; to explore the racial discrimination acts toward the black maids and to investigate the effects of racial discrimination to the black maids’ lives. Since the present writer analyzes the discriminative treatments from the white masters toward the black maids based on the real social condition in the era of 1960s in Southern United States, Sociological Approach is considered as the most suitable approach to be applied. In addition, Fred L. Pincus’s theory about type of discrimination is also used in analyzing the discrimination acts. The result of this research paper shows there are two types of discrimination as seen in the novel; individual discrimination and institutional discrimination, and those discrimination acts reflect the social condition of 1960s in Southern United States. Meanwhile, racial discrimination affects the lives of the black maids in term of distrust toward white people and insecurity.
Characteristics of Children’s Literature in Diterlizzi’s Kenny and the Dragon
Authors: Saputri Endah
Published: April 2021

This present study aims to examine whether or not DiTerlizzi’s novel entitled Kenny and the Dragon can be categorized as a children’s literature. The story speaks about an adventurous experience of a young rabbit called Kenny to discover the truth about his monstrous-looking friend, Grahame.This study applies formalism approach since it is the most suitable approach to study the intrinsic elements of the novel, which are the plot, character and characterization, and point of view. To support the analysis, library research was conducted alongside the novel itself and supporting articles from reliable websites.The result of the analysis shows that DiTerlizzi’s Kenny and the Dragon meets the requirements for children’s literature since the characteristics of children’s literature suggested by Nodelman are found in the novel.
Criticism against the Gentlemen Image in England’s Victorian Period in R.L. Stevenson’s The Strange Case of Dr. Jekyll and Mr. Hyde
Authors: Chelsy Vallentina , Hernawati Mala
Published: April 2021

England’s Victorian period is marked as an era of historical, technological, economic, and social change. Although science and technological advancement was very progressive—denoted by the Industrial Revolution which took place in this era—the Victorian society’s ideal of moral values, norms, and beliefs was very conservative. Robert Louis Stevenson, a famous Victorian author, wrote The Strange Case of Dr. Jekyll and Mr. Hyde which portrays the complexity of Victorian upper class lives in dealing with the development of science yet facing the strict social norms. This research applies a sociological approach to examine the significant relations between the characterization of the three main characters in the novel—Jekyll, Hyde, and Utterson—and the social issues in the Victorian era. A library research as well as a qualitative method is applied in the process of collecting and analyzing the data. It was found that both Henry Jekyll and Edward Hyde symbolize the repressed individuals of Victorian social norms as Jekyll suppresses his inner-self and separates his dual personality apart in the form of Edward Hyde. As the representation of Jekyll’s evil side, Hyde performs violent and criminal acts which oppose the ideal of social morality. It can be concluded that Jekyll-Hyde’s characterization articulates the social criticism against the firm gentlemen image in the Victorian era. In contrast, Utterson’s characterization represents the epitome of Victorian gentleman.
Irregular Word Formation of Lexical Innovations in James Dashner’s The Maze Runner
Authors: Kartikasari Dhyani Natasha , Roselani Ni Gusti Ayu
Published: April 2021

This study investigates lexical innovations in The maze runner by James Dashner (2010), especially in terms of irregular word-formation techniques. 34 units of lexical innovations were found and classified according to their word classes: nouns, verbs, adjectives, and exclamations. The analysis focuses mainly on the examination of the word-formation processes undergone by the lexical units. The results reveal that four irregular word-formation techniques were used in the coinage of the new lexicon: compounding with left-headedness, compounding with unrecognizable constituent, compounding with irregular combination, and rhyming.
Indonesian-English Code-Switching of Sacha Stevenson as a Canadian Bilingual Speaker on YouTube
Authors: Rini Astrid Tiara , Moehkardi Rio Rini Diah
Published: April 2021

Code-switching or language alternation is one of the linguistic strategies that is widely used in bilingual community, including Indonesia. This study attempts to find out the types and reasons of code-switching on YouTube as employed by a Canadian bilingual speaker, Sacha Stevenson. The data used for this study were transcripts of five videos about Indonesian culture taken from Sacha’s YouTube channel. Based on the analysis, there are a total of 313 occurrences of code-switching from Indonesian to English. Poplack’s theory (1980) was applied for the classification of code-switching. The findings showed that the most frequent type is inter-sentential code-switching (42%), followed by intra-sentential code-switching (34%), and the least is tag-switching (24%). This study also explored the reasons for code-switching by applying the theory proposed by Grosjean (1984). It was found that all code-switching occurrences fit into the 11 categorizations of code-switching reasons. This shows a variety of different factors that influence the use of code-switching. The most frequent reason which triggered code-switching is to fill a linguistic need for lexical item, set phrase, discourse marker, or sentence filler (31%). In addition to the 11 reasons proposed by Grojean (1984), another reason for code-switching was found, i.e., to gain popularity.
ANALISIS KOMPETENSI PROFESIONAL GURU MATEMATIKA BERSERTIFIKAT PENDIDIK PADA MADRASAH IBTIDAIYAH NEGERI (MIN) DI KABUPATEN ACEH BARAT
Authors: Hafriani Hafriani
Published: April 2021

Sertifikasiguru merupakan proses pemberian sertifikatpendidik kepada guru.Sertifikatpendidikdiberikankepadaguruyang telahmemenuhistandar profesi dan kompetensi guru. Kompetensiguru merupakan seperangkat kemampuanyang harusada dalamdiriguruagardapatmewujudkankinerjanya secaratepat  dan  efektif. Kompetensi  tersebut  meliputi  kompetensi  pedagogik, kepribadian, profesional, dan sosial.Berdasarkan wawancara dengan kepala Dinas Pendidikan Meulaboh diperoleh keterangan bahwa guru kurang aktif dalam kegiatan Kelompok Kerja Guru (KKG) dan dalam berinteraksi dengan orang tua peserta didik. Adanya sertifikasi diharapkan kinerja guru akan menjadi lebih baik. Tujuan penelitian ini adalah untuk mengetahui pengaruh sertifikasi terhadap kinerja guru. MIN di Kabupaten Aceh Barat. Subjekdalampenelitianiniberjumlah14 orang guru dari 7 Madrasah Ibtidaiyah Negeri.Jenis penelitian ini adalah kualitatif dengan metode deskriptif.Teknikpengumpulan data menggunakanLembar observasi kemampuan guru mengajardan angkettertutupdengan skalalikert4, yang dianalisis dengan menggunaan kriteria yang telah ditentukan. Hasil penelitian menunjukkan bahwa kemampuan guru dalam mengelola pembelajaran pada saat dilakukan pembelajaran pada materi dengan model pembelajaran kooperatif berada pada kategori tidak baik hanya satu guru yang berada pada kategori baik yaitu 89,47% dan Respon siswa terhadap penerapan pembelajaran dengan model pembelajaran kooperatif positif. Berdasarkan   hasil penelitian tersebut dapat disimpulkan bahwa guru yang sudah mendapat sertifikasi tidak semuanya aktif dan profesional dalam mengelola pembelajaran. Disarankan kepada guru bersertifikat pendidik agar selalu meningkatkan kinerjanya dengan berlandaskan pada kompetensi pedagogik, kepribadian, profesional, dan sosial, sehingga terciptalah keseimbangan antara hak dan kewajibannya.
Causes of hypertransaminasemia in children, single-center experience
Authors: KEÇELİ BAŞARAN Meryem , ÇİÇEK Tuba
Published: April 2021

Introduction: When transaminase levels (Alanine aminotransferase: ALT, Aspartate aminotransferase: AST) are high, a causal investigation is necessary. Although the etiology and frequency of hypertransaminasemia have been examined at length in the adult population, research addressing pediatric patients is far from being sufficient in number. The objective of this study is to investigate the causes the hypertransaminasemia. We think that knowing the most common causes of hypertransaminasemia in children will help primary care physicians with diagnosis and follow-up.Methods: The patients who were admitted to the pediatric gastroenterology policlinic between 2018- 2019 with ALT> 45 IU /L and/or AST> 50 IU /L levels were the subjects of this study. They all displayed elevated liver function test (LFT) results due to various conditions including liver-related ones and others. The medical records of the patients, who were between 6 months and 18 years of age, were analyzed.Results: Of 237 patients included in the study, 127 (54%) were male and 110 (46%) were female. The mean age of the patients was 75.40 ± 60.50 months. 5.06% of the patients had fever, 11.39% had hepatomegaly, 7.59% suffered from loss of appetite and 7.59% had abdominal pain. The obesity rate was at 9.70% while splenomegaly was detected in 2.11% of the patients. Elevation of liver enzymes was found to be related with idiopathic causes 35% (n=83), viral infections 21% (n=50), hepatosteatosis 15% (n=38), and medication 8.80% (n=21).Conclusion: Hypertransaminasemia may be an outcome of primary diseases of the liver and it may also be aggravated due to secondary effects. NAFLD (non-alcoholic fatty liver disease, viral infections, and medication continue to be among the most common causes. NAFLD constitutes an important cause of hypertransaminemia in children.
A participação e a gestão democrática no programa nacional de fortalecimento dos conselhos escolares
Authors: Moraes Aline C. A. , Ruiz Maria José Ferreira
Published: April 2021

Este artigo tem como objetivo analisar a concepção de participação e de gestão democrática disseminada por meio do Programa Nacional de Fortalecimento dos Conselhos Escolares (PNFCE) e discutir a relevância do fortalecimento do referido conselho. Na pesquisa utilizamos como recursos metodológicos a pesquisa documental nos cadernos instrucionais elaborados pelo MEC/SEB; a pesquisa bibliográfica e a análise em relatos de “experiências exitosas” de escolas que adotaram tal programa. Neste texto, a princípio apresentamos a concepção de conselhos escolares e discutimos sobre o processo político que possibilitou a inserção deste colegiado nas políticas educacionais, mais especificamente na LDBEN 9394/96. A seguir apresentamos uma análise a respeito da concepção de gestão democrática do Programa Nacional de Fortalecimento dos Conselhos Escolares, evidenciando que a mesma se constitui num processo que para ser efetivado solicita mudanças organizacionais e políticas na sociedade. Concluímos que a concepção de gestão democrática e de participação, difundida pelo PNFCE se pauta na lógica das políticas para a educação difundidas após a década de 1990, na qual a parceria entre escola e comunidade é vista como condição sem a qual não é possível alcançar a qualidade na escola. Contudo é necessário questionar sobre essa concepção redentora e também sobre as condições concretas e objetivas diante das quais a gestão democrática é efetivada
On relative essential spectra of a 3 x 3 operator matrix involving relative generalized weak demicompactness
Authors: Ferjani Imen , Jeribi Aref , Krichen Bilel
Published: April 2021

In this paper, we investigate the relative essential spectra of a 3 x 3 block
matrix operator with unbounded entries and with domain consisting of vectors
satisfying certain relations between their components. Our results are
formulated in term of relative generalized weak demicompactness and measure
of non-strict-singularity.