bluuebunny/crossref_metadata_2025 huggingface dataset:
Aprendizaje-Servicio y su efecto sobre las actitudes hacia la inclusión en futuros maestros de Educación Física
Authors: Abellán Jorge
Published: March 2021

El aprendizaje-servicio es una metodología que ofrece la posibilidad de aprender mientras se presta un servicio a la comunidad. En el presente trabajo, doce estudiantes debían diseñar y dirigir seis horas de clase relacionadas con los contenidos de la asignatura Juegos, Ocio y Recreación, destinados a prestar un servicio a personas que residían en un centro de atención a la discapacidad intelectual con grandes necesidades de apoyo. Los participantes completaron un cuestionario, antes y después de la experiencia, destinado a la evaluación de sus actitudes hacia la inclusión. Asimismo, realizaron reflexiones individuales después de cada una de las sesiones. Los resultados indican que se observa una tendencia a la mejora en las actitudes hacia la inclusión después del programa, algo que coincide con los resultados del análisis de las reflexiones individuales. Se aprecia un cambio en la percepción de los futuros maestros desde la primera a la última sesión práctica. El primer contacto no fue percibido como una experiencia positiva por los participantes. Los participantes han indicado que la motivación y la adaptación de las tareas han sido sus estrategias inclusivas utilizadas. Se sugiere que las características de los destinatarios del programa han determinado este cambio, ya que los estudiantes se han sentido menos preparados a la hora de atender a la diversidad.
Percepciones sobre las aportaciones del Aprendizaje-Servicio a la docencia universitaria y a los aprendizajes en el ámbito de la Educación Física: Una perspectiva autobiográfica desde los relatos cruzados del profesorado
Authors: Franco-Sola Marc , Figueras Comas Sara , Campos-Rius Josep , Sebastiani Obrador Enric Maria
Published: March 2021

El estudio que se presenta a continuación propone comprender las percepciones del profesorado universitario en el ámbito de la educación física en relación con la implementación de la metodología de Aprendizaje-Servicio (ApS) en sus clases. La investigación se centra en: a) interpretar las creencias que el profesorado atribuye a las aportaciones de la metodología en su propia carrera profesional docente; y b) comprender su percepción en relación con la evolución de los aprendizajes adquiridos por el alumnado a través de estas experiencias a lo largo de los años. Para desarrollar la investigación se utiliza el método biográfico y la recogida de datos se realiza a través de los relatos de vida cruzados de 4 profesores de los grados de Ciencias de la Actividad Física y el Deporte y del Grado de Educación Primaria, con más de cinco años de experiencia en la implementación de la metodología ApS en sus clases de educación física. Los resultados del análisis cualitativo nos descubren desde la subjetividad, el valor de los significados atribuidos a una metodología que fomenta el aprendizaje competencial en la Facultad de Psicología, Ciencias de la Educación y el Deporte Blanquerna (Universitat Ramon Llull).
Educar la mirada. El discurso informativo de las “fake news” en el currículo de Secundaria y Bachillerato
Authors: Sánchez García Francisco José
Published: March 2021

En los últimos años, asistimos a la profunda transformación de los hábitos de consumo informativo de las nuevas generaciones, que avanza en paralelo al desarrollo de las redes sociales y de mensajería —WhatsApp, Facebook, Twitter—. La sobreabundancia de noticias y la facilidad de acceso a estos contenidos, que a priori tendríamos que entender como una gran ventaja, presenta un problema crucial, que tiene que ver con la alarmante falta de criterio de los adolescentes sobre la veracidad o falsedad de estas noticias que circulan por la red, y que en muchos casos sirven a intereses manipuladores. Por ello, en este artículo repasaremos las principales aportaciones sobre la difusión viral y consumo de fake news por parte de los jóvenes españoles, así como el papel que los contenidos de prensa y medios de comunicación desempeñan actualmente en la enseñanza no universitaria, insistiendo en la necesidad de acometer el problema desde la raíz, esto es, abordándolo como un elemento básico del currículo de Lengua castellana y literatura en Educación Secundaria Obligatoria y Bachillerato.
EVALUATION OF THE QUALITY OF PRIMARY EDUCATION BY TESTING 5 FROM THE TEACHER’S PERSPECTIVE
Authors: Brozmanova Monika , Kocisova Lucia
Published: March 2021

Quality requirements in all areas of education and in all types of schools are one of the basic attributes on which the future of nations, states and humanity depends. The quality of education as a service of a publicly funded society is therefore subject to monitoring by government institutions. Evaluating the quality of a school means finding out data on pre-agreed aspects of school life, the processes that take place in it. In 2015, an innovated state educational program was introduced in primary education. It brought changes especially in the educational standards of individual subjects, where is the attention to performance standards. The content of the curriculum does not become the goal of education, but a means to achieve the goal, which is a competent student. National testing also tries to bring this change in the understanding of content closer to the creation of test tasks. Students tests results cannot be the only and most important measure of a school's quality. Students, parents and teachers need to focus on non-cognitive processes at school. The introduction of testing of 5th grade students was not accepted by teachers with an understanding of effort to increase the quality of education. The aim of the paper is to compare the opinions of teachers from 2017 with the opinions of teachers in 2020 and to find out whether there has been a change in the acceptance of testing of 5th grade students as a tool for measuring the quality of education after primary education.
STANDARDIZATION VERSUS PLURALITY IN FOREIGN LANGUAGE TUITION
Authors: Jerabkova Petra
Published: March 2021

In its theoretical part, the thesis deals with the standardization of education, in particular language education at colleges of non-philological nature, reflecting, critically evaluating this trend and analysing its weaknesses. Practical part ten introduces the results of research in the practice of foreign language competence testing at work interviews as experienced by University of Economics in Prague graduates. One of the goals of language education standardization at colleges is to provide a lead to employers. The results of the research contest this goal being achieved.
Performance evaluation of super resolution algorithms in generating high resolution images using MSE and PSNR
Authors: Murugan Palani , Kumar Gautam Vivek , Ramanathan V.
Published: March 2021

In recent days, requirement of high spatial resolution remote sensing data in various fields has increased tremendously.  High resolution satellite remote sensing data is obtained with long focal length optical systems and low altitude. As fabrication of high-resolution optical system and accommodating on the satellite is a challenging task, various alternate methods are being explored to get high resolution imageries. Alternately the high-resolution data can be obtained from super resolution techniques. The super resolution technique uses single or multiple low-resolution mis-registered data sets to generate high resolution data set.  Various algorithms are employed in super resolution technique to derive high spatial resolution. In this paper we have compared two methods namely overlapping and interleaving methods and their capability in generating high resolution data are presented.
Articulação teórica entre registros de representação semiótica e Etnomatemática: no contexto da prática de pesca artesanal
Authors: Almeida Júnior Deusarino Oliveira , Nunes José Messildo Viana , Alves Fábio José da Costa , Braga Kayla Rocha , Assunção Carlos Alberto Gaia
Published: March 2021

O estudo foi desenvolvido a partir do contexto da pesca artesanal praticada no município de Vigia de Nazaré – PA. A intervenção procedeu-se com alunos egressos do 9º ano do Ensino Fundamental, com objetivo de contextualizar o estudo de proporção às práticas laborais da pesca por meio da conjunção de ideias da Etnomatemática, no sentido da Etnocomunidade e da Teoria dos Registros de Representação Semiótica - TRRS. A pesquisa de abordagem qualitativa do tipo etnográfica apresenta como instrumento de produção de dados os registros escritos produzidos pelos alunos durante a realização das tarefas que foram concebidas e, posteriormente suas resoluções analisadas fundamentadas pela conjunção entre os campos teóricos adotados. Os resultados obtidos permitiram-nos concluir que as atividades realizadas propiciaram a aprendizagem de conhecimentos relacionados à noção de proporção e revelou indícios de desenvolvimento na capacidade dos alunos em perceber aspectos socioculturais e econômicos de sua realidade. A articulação e o diálogo entre os aportes teóricos comportaram uma síntese indicadora do contexto sociocultural e político institucional nas práticas de pesca, podendo com isso, evidenciar a relação entre práticas sociais e o saber matemático de um grupo cultural específico, aqui entendido como Etnocomunidades.
On Constitutional Novelties of Regulation of the Status of the Constitutional Court of the Russian Federation
Authors:   Associate Professor of the Department of Constitutional and International Law of the Law Institute of the Tomsk State University, PhD (Law), Tatarinov Sergey A.
Published: March 2021

In this article the author considers new amendments to the Constitution of the Russian Federation, which covers legal, organizational ant competence basis of the functioning of the Constitutional Court of the Russian Federation. The particular attention is paid to such questions as changes of its structure, powers and its influence, passed judgments on legislature and legal practice of the public authority. The author analyses debatable aspects on realization of constitutional innovations , which should be considered when elaborating new legislation on constitutional justice.
Metabolomics: An Emerging Tool for Precision Medicine
Authors: Meiliana Anna , Dewi Nurrani Mustika , Wijaya Andi
Published: March 2021

BACKGROUND: Metabolomics is a developed technology that comprehensively analyzes the metabolites in biological specimens. It appears to be a prospective method in the practice of precision medicine.CONTENT: Metabolomic technologies currently surpass beyond the traditional clinical chemistry techniques. Metabolomic is capable to perform a precise analysis for hundreds to thousands of metabolites, therefore provide a detailed characterization of metabolic phenotypes and metabolic derangements that underlie disease, to represent an individual’s overall health status, furthermore to discover new precise therapeutic targets, and discovery of biomarkers, either for diagnosis or therapy monitoring purpose.SUMMARY: Adequate data processing and quantification methods are still needed to be developed to boost integrated -omics as a powerful clinical practice platform.KEYWORDS: metabolomic, precision medicine, phenotyping, biomarker, nutritional pattern
Intratumoral and Peritumoral Apparent Diffusion Coefficient and MGMT mRNA Expression in Different Meningioma Histopathological Grade
Authors: Mulyadi Rahmad , Hatta Mochamma , Islam Andi Asadul , Murtala Bachtiar , Tammase Jumraini , Firdaus Muhammad , Susanto Eka , Prihartono Joedo
Published: March 2021

BACKGROUND: Histopathological examination is the gold standard for diagnosing meningioma and determining the treatments. However, it is invasive in nature. This study was conducted to identify intratumoral and peritumoral apparent diffusion coefficient (ADC) value and mRNA O6-methylguanine-DNA methyltransferase (MGMT) expression in meningioma.METHODS: Data were collected from 39 patients who were clinically diagnosed with meningioma. However, only 37 patients met the inclusion criteria. These subjects then underwent examinations and received treatment from October 2017 to September 2018. Magnetic resonance imaging (MRI) data with diffusion-weighted imaging-apparent diffusion coefficient (DWI-ADC) sequence, histopathological diagnosis of meningioma, and results of MGMT mRNA expression were obtained.RESULTS: The most frequent type of low-grade and overall tumor was meningioma not otherwise specified (56.8%). For high-grade tumor, there were two atypical cases: atypical meningioma (2.7%) and rhabdoid meningioma (2.7%). Meningothelial meningioma had the highest mean value of minimum intratumoral ADC at 864.57±219 x10-3 mm2/s, whereas rhabdoid meningioma had the lowest at 417 x10-3 mm2/s. For minimum peritumoral ADC, rhabdoid meningioma had the highest mean value at 1,651 x10-3 mm2/s, while atypical meningioma has the lowest at 1,281 x10-3 mm2/s. For MGMT mRNA, meningothelial meningioma had the highest mean value at 10±1.2 fold change, whereas rhabdoid meningioma had the lowest mean at 6.18 fold change.CONCLUSION: WHO grade I meningiomas had higher minimum intratumoral ADC values and higher MGMT mRNA expression than the high-grade tumors. Minimum peritumoral ADC values differed across the histopathological grades.KEYWORDS: meningioma, RNA, messenger, MRI, methyltransferases, RT-PCR, ADC, MGMT mRNA
The Effect of Nutmeg Seed (M. fragrans) Extracts Induces Apoptosis in Melanoma Maligna Cell’s (B16-F10)
Authors: Susianti Susianti , Lesmana Ronny , Salam Supriatno , Julaeha Euis , Pratiwi Yuni Susanti , Sylviana Nova , Goenawan Hanna , Kurniawan Ahmad , Supratman Unang
Published: March 2021

BACKGROUND: Nutmeg (Myristica fragrans H.), one of native plants of Maluku Indonesia, has long been used as traditional medicines especially to treat tumors, externally to treat skin infections. M. fragrans also has important biological activities as anticancer. However, antimelanoma activity of M. fragrans remains unknown. The aim of this study is to compare M. fragrans extracts as anticancer on melanoma B16-F10 cells by inducing apoptosis.METHODS: M. fragrans seed was extracted with ethanol then fractionated with n-hexane, ethyl acetate, and n-butanol. B16-F10 melanoma cells were cultured and treated with various doses and tested using resazurin reduction assay. Apoptosis signalling via caspase-3 was measured by using western blot.RESULTS: The extract and fractions of M. fragrans reduced viability of cells with IC50 value for ethanol extract 21.83 µg/mL, ethyl acetate fraction 21.66 µg/mL, n-hexane fraction 47.53 µg/mL, and n-butanol fraction >1,000 µg/mL. The active fraction of ethyl acetate induced apoptosis via caspase-3 proteins similar with cisplatin as positive control in B16-F10 cells at 10 hours treatment.CONCLUSION: Taken together, M. fragrans ethyl acetate fraction has the highest IC50 than n-hexane and n-butanol fractions that significantly inhibited B16-F10 cell proliferation by inducing apoptosis via caspase-3. It provides the insight that it has the most potential activity as a chemopreventive agent for addressing melanoma skin cancer.KEYWORDS: M. fragrans, apoptosis, fraction, melanoma
Robusta Extract Cream Ameliorated Ultraviolet B-induced Wrinkle Skin of Mice by the Regulation of Epidermal Thickness and Inhibition of MMP-1
Authors: Mariati Dimpuulina Erna , Sudigdoadi Sunarjati , Lesmana Ronny , Khairani Astrid Feinisa , Gunadi Julia Windi , Tarawan Vita Murniati , Supratman Unang , Goenawan Hanna
Published: March 2021

BACKGROUND: Recently, coffee is widely used for preventing photoaging because of its antioxidant capacity. Among two kinds of coffee, robusta coffee has higher content of antioxidant such as chlorogenic acid (CGA) and caffeine. Researchs about robusta coffee bean effect on photoaging due to UVB radiation is still limited. Therefore, the aim of this study was to examine the effect of robusta extract cream (RE cream) on preventing wrinkle in mice induced by ultraviolet-B (UVB) radiation.METHODS: RE cream was made by mixing RE coffee with moisturizing cream in different concentration (10%, 20%, and 40%). Twenty-five male of Mus musculus Balb/c strain mice aged 4 weeks were divided into five groups; control group, UVB group, UVB + 10% RE group, UVB + 20% RE group, and UVB + 40% RE group. The UVB groups were given UVB radiation three times a week with an exposure duration of 100 seconds per time for ten weeks. At the end of the treatment, skin samples were excised and statined histologically, also were analyzed for their protein expression. Evaluation of wrinkles was carried out using the Bissete method before and after treatment. To evaluate the thickness of the epidermis, HE staining was performed, while masson Trichome staining was performed to determine the collagen content.RESULTS: RE cream-treated groups showed lower wrinkle score compared to the control group. Furthermore, in UVB + 10% RE group, the RE cream application reduce wrinkle formation. In UVB + 10% RE group and UVB + 20% RE group, the RE cream application increased epidermal thickness and collagen content (p=0.00). While collagenase, matrix metalloproteinase-1 (MMP-1) expression was lower in UVB + 20% RE group compared to the UVB group (p<0.05), however the MMP1 expression in UVB + 40% RE group was higher than other treatment group.CONCLUSION: RE cream prevents wrinkle by maintaining epidermal thickness and collagen contain. RE cream also decreases MMP-1 expression in mice.KEYWORDS: coffee, collagen, MMP-1, robusta, wrinkle
Phylogenetic Signal in Characters from Aristotle’s History of Animals
Authors: Laurin Michel , Humar Marcel
Published: March 2021

The great Greek philosopher Aristotle (384–322 BCE) is almost unanimously acclaimed as the founder of zoology. There is a consensus that he was interested in attributes of animals, but whether or not he tried to develop a zoological taxonomy remains controversial. Fürst von Lieven and Humar compiled a data matrix and showed, through a parsimony analysis published in 2008, that these data produced a hierarchy that matched several taxa recognized by Aristotle. However, their analysis leaves some questions unanswered because random data can sometimes yield fairly resolved trees. In this study, we update the scores of many cells and add four new characters to the data matrix (147 taxa scored for 161 characters) and quote passages from Aristotle’s Historia animalium to justify these changes. We confirm the presence of a phylogenetic signal in these data through a test using skewness in length distribution of a million random trees, which shows that many of the characters discussed by Aristotle were systematically relevant. Our parsimony analyses on the updated matrix recover far more trees than reported by Fürst von Lieven and Humar, but their consensus includes many taxa that Aristotle recognized and apparently named for the first time, such as selachē (selachians) and dithyra (Bivalvia). This study suggests that even though taxonomy was clearly not Aristotle’s chief interest in Historia animalium, it was probably among his secondary interests. These results may pave the way for further taxonomic studies in Aristotle’s zoological writings in general. Despite being almost peripheral to Aristotle’s writings, his taxonomic contributions are clearly major achievements.
Improve Student Skills in Read Understanding Text Explanation with Using the SQ3R Method
Authors: R Delina , Mahendra Hatma Heris , Nurani Riga Zahara
Published: March 2021

The research has problem less reading comprehension ability explanation text in class IV. This research aims to increase reading comprehension ability using SQ3R in text explanation at IV class SDN Nantang. The researcher uses classroom action research. The result shows the use of SQ3R can increase reading comprehension ability in text explanation. Pre-test shows average scores are 45,83 with 27% complete and 73% incomplete. Cycle I with average scores are 75,67% with 60% complete and 40% incomplete and cycle II average scores 87,83 with 90% complete and 10% incomplete. The result of average is 42.  Reading comprehension ability is 53%. Based on the increase in pre-test until cycle I and cycle II, the conclusion is SQ3R can increase reading comprehension ability in text explanation at IV class SDN Nantang sub-district Cigalontang regency Tasikmalaya period 2020/2021
The Influence of Experiential Learning Model on Primary School Student’s Creative Thinking Skills
Authors: Asyari Lutfi , Nuriyanti Risma , Gunawan Dani , Adiredja Rajji K.
Published: March 2021

The students’ skill in exploring creative ideas in writing is a problem that needs to be taken seriously. This happens because of the students’ lack of creative thinking in exploring some ideas in words. The purpose of this research was to examine the effects of experiential learning model on primary school students’ creative thinking skill. The method used quasi-experimental of non-equivalent control group design. The population of this research was a group of fourth grader students of Sekolah Dasar Labschool UPI (Labschool UPI Primary School) in total of 47 students and divided in to two separate classes, which were an experimental class and a control class. The results of this research revealed significant contrasts in post-test between an experimental class and a control class. The results concluded that the experiential learning model has significant effects on primary school students’ creative thinking skill. Therefore, the experiential learning model is one of the solutions for teacher to develop students’ creative thinking skill, especially in writing from the aspects of flexibility, fluency, originality and elaboration. Moreover, the outcome ideas were diverse, expressive and comprehensible.
Improving the Reading Ability of Students Using the Cooperative Integrated Reading and Composition (CIRC) Method in Class IV SDN 3 Cilangkap
Authors: Ratnasari Heni , Nurani Riga Zahara , Febriani Winarti Dwi
Published: March 2021

This study aims to improve students' reading comprehension skills by using the Cooperative Integrated Reading and Composition (CIRC) method. This research method was conducted in 3 cycles using a classroom action research design belonging to Kemmis and Mc Taggart. In implementing this research, the steps of the Cooperative Integrated Reading and Composition (CIRC) method are used, which are divided into three stages, namely the opening activity, the core activity, and the closing activity. The results of the research in the first cycle obtained an average value of 78.6 with the percentage of students who had completed 70% and those who had not completed were 30%. Furthermore, in the second cycle an average score of 85.5 was obtained with the percentage of students who had completed 90% and those who had not completed were 10%. Meanwhile, in cycle III, an average score of 89.8 was obtained with the percentage of students who completed 100%. The results obtained, namely the Cooperative Integrated Reading And Composition (CIRC) method can improve reading comprehension skills of fourth grade students of SDN 3 Cilangkap, Tasikmalaya Regency.
HUBUNGAN ANTARA STATUS SOSIAL EKONOMI DAN PENGETAHUAN KESEHATAN LINGKUNGAN DENGAN PARTISIPASI IBU RUMAH TANGGA DALAM PEMELIHARAAN LINGKUNGAN SEHAT DI RUMAH SUSUN PENJERNIHAN JAKARTA PUSAT
Authors: Saleh Rosmawita
Published: March 2021

Tujuan dari penelitian ini adalah untuk mempelajari hubungan antara status sosial ekonomi, pengetahuan tentang kesehatan lingkungan dan partisipasi pada perawatan kesehatan yang sehat rumah tangga ibu Rumah Susun Penjernihan Jakarta Pusat. Penelitian ini dilakukan di Jakarta Pusat dari Februari hingga Juni 2001 dengan 72 responden memilih random sampling.Penelitian ini menyimpulkan bahwa ada hubungan positif antara: (1) status sosial-ekonomi (x1) dan partisipasi pada perawatan lingkungan yang sehat (Y) dengan ry1 = 0,603 dan Y = 43,241 + 1,016X1; (2) pengetahuan tentang kesehatan lingkungan (X2) dan partisipasi pada perawatan lingkungan yang sehat (Y) dengan ry2 = 0,751 dan Y = 31,343 + 1,529X2.Selanjutnya, ada hubungan positif antara dua variabel independen dengan partisipasi pada perawatan lingkungan yang sehat (Y) dengan ry.12 = 0,752 dan regresi ganda Y = 31,251 + 1,447X1 + 0,087X2.
STUDI DAYA TAHAN KEBAKARAN KAYU LAPIS STRUKTURAL DENGAN PELABURAN AMONIUM SULFAT BERKOSENTRASI 10%, 35% AND 60%
Authors: Nur Risdian M , Irmis Sain Abdul
Published: March 2021

Penelitian ini bertujuan untuk mengetahui keberadaan keberadaan lapis ketahanan api kayu lapis dengan perbandingan 10% sulfon amonium: air 90%, sulfon sulfat 35%: air 65% dan sulfon sulfat 60%: air 40%. Tempat Penelitian dilaksanakan di Laboratorium Komposit Zat Pusat Penelitian Dan Pengembangan Fisika Terapan, Lembaga Ilmu Pengetahuan Indonesia, Pusat Penelitian Sains dan Teknologi Serpong, Tangerang - Banten. Adapun penelitian dilaksanakan oleh Bulan Maret 2004 hingga Mei bulan 2004.Metode penelitian yang digunakan adalah eksperimen. Populasi penelitian adalah kayu lapis struktural sebanyak 18 buah hingga tiga perlakuan. Pemeriksaan hipotesis oleh Anava. Uji kondisi analisis yang digunakan dengan uji normalitas dan uji homogenitas menghasilkan data berdistribusi normal ke dan bersifat homogen.Dari data hasil penelitian diperoleh menunjukkan bahwa kayu lapis struktur yang diberikan oleh zat penghambat api dengan konsentrasi 60% sulfononat setelah dilakukan / dilakukan dengan bobot pengujian tetap dengan rata-rata = 19,15 gr sedangkan kayu lapis struktural diberikan oleh zat penghambat api dengan konsentrasi 35% sulfon amonium setelah dilakukan / dilakukan dengan berat pemeriksaan tetap dengan rata-rata = 13,41 gr kayu lapis struktural dan diberikan oleh zat penahan api dengan konsentrasi 10% sulfon amonium setelah dilakukan / dilakukan oleh berat badan pengujian tetap dengan rata-rata = 12,09 gr .Pengujian hipotesis dengan menggunakan Analisis Varian satu arah, diperoleh Fhitung = 50,1630 pada taraf signifikan Î± = 0,01 diperoleh Ftabel = 6,36 karena Fhitung> Ftabel maka Ho ditolak.Hasil penelitian adalah terdapat perbedaan ketahanan api plywood struktural dengan perbandingan 10% sulfon amonium: air 90%, sulfon sulfat 35%: air 65% dan sulfon sulfat 60%: air 40%
PENGALIRAN AIR LIMBAH DI DAERAH PEMUKIMAN
Authors: Rahmayanti Henita
Published: March 2021

Dalam kegiatan manusia selalu akan menghasilkan limbah baik berupa limbah cair maupun padat, tentunya perlu pengelolaan yang baik agar tidak berakibat tidak baik bagi lingkungan.Pengaliran air limbah di daerah pemukiman mutlak diperlukan, dalam pengelolaan yang diupayakan dengan sebaik-baiknya sesuai dengan ketentuan yang ada agar kualitas kesehatan lingkungan pemukinan dapat dipenuhi.
HUBUNGAN ANTARA PEMBEBANAN DENGAN PENURUNAN (DISPLECEMENT) BATA MERAH PEJAL DILIHAT DARI POSISI PEMBAKARANNYA
Authors: Devanty Irvin , Ahmad Irza , Sr Daryati
Published: March 2021

Penelitian ini bertujuan untuk mengetahui berapa besar perbedaan nilai penurunan(displacement) yang terjadi pada bata merah pejal posisi pembakaran atas, tengah danbawah jika diberi gaya lateral. Batu bata diambil dari Lemah Abang, Cikarang. Metode yangdigunakan adalah metode eksperimen. Penelitian ini dilaksanakan di Laboratorium balaiPenelitian Bahan Dinas perindustrian DKI Jakarta, di Jl. Let. Jend. Suprapto, CempakaPutih, Jakarta Pusat. Tahapan penelitian. Statistik yang digunakan adalah analisa Lillieforsuntuk normalitas data, analisa Bartlett untuk homogenitas data dan ANAVA untukmenghitung perbedaan penurunan di antara tiap kelompok batu bata merah
KEBIJAKAN PEMERINTAH DAERAH KOTA DALAM MENANGANI POLUSI UDARA DI WILAYAH PERKOTAAN
Authors: Rahmayanti Henita
Published: March 2021

Tujuan Penulisan ini memberikan gambaran mengenai transportasi di daerah perkotaankhususnya kota-kota yang telah di kategorikan sebagai kota metropolitan danpenanganan polusi udara yang ditimbulkan oleh kemacetan, serta beberapa tujuan lain,yaitu: mengetahui bagaimana kebijaksanaan pemerintah dalam menangani masalahkemacetan, mengetahui bagaimana kebijaksanaan pemerintah dalammengatasi/mereduksi polusi udara yang ditimbulkan oleh kemacetan, mengetahui zatzatberbahaya yang terkandung dalam polutan.
PONDASI DERMAGA TYPE CAISSON UNTUK REHABILITASI PELABUHAN UJUNG PANDANG
Authors: Ahmad Irza
Published: March 2021

Banyak sekali pelabuhan yang terdapat di Indonesia. Tentunya karenaIndonesia terdiri dari pulau-pulau yang membutuhkan pelabuhan, baikpelabuhan besar maupun pelabuhan perintis.Dari sekian banyak pelabuhan, terdapat satu pelabuhan yang memilikipondasi yang direncanakan dengan pondasi Type Caisson yang merupakansatu-satunya di Indonesia, yaitu pelabuhan Ujung Pandang.Pelabuhan ini merupakan pelabuhan yang direhabilitasi dengan memperluasdari pelabuhan yang telah ada.
KECENDERUNGAN BIAYA KUDA-KUDA KAYU DINTINJAU DARI PANJANG BENTANG
Authors: Septiandini Erna
Published: March 2021

Penelitian ini bertujuan untuk mencari kecenderungan (trend) biaya pembuatan kuda-kuda atap pelana dengan struktur kayu. Sehingga dapatdiperkirakan biaya pembuatan kuda-kuda rangka kayu untuk berbagai panjang bentang.Biaya pembuatan rangka kuda-kuda dengan material kayu dengan bentang 9 m adalah Rp. 4.580.400,- , 12 m adalah Rp. 5.862.912,- , bentang 15 madalah Rp. 7.695.072,- dan bentang 18 m Rp. 10.260.096,-. Kecenderungan (trend) yang diperoleh adalah y = 320628x2 + 283985x + 4E+06
STUDI TENTANG MUTU BATAKO YANG ADA DI PASARAN WILAYAH JAKARTA TIMUR TERHADAP SNI 03-0349-1989
Authors: S.Pd Munawaroh , Septiandini Erna , Nasution Nira
Published: March 2021

Penelitian ini bertujuan untuk menganalisa mutu suatu bahan bangunan yaitu Batako. Banyaknya batako yang bersedar di pasaran dan tidak adanya kontrolterhadap kualitas/mutu batako oleh produsen, merupakan salah satu faktor yang menyebabkan Batako tidak memenuhi standar (SNI 03-0349-1989). Dalampenelitian ini ada 9 kelompok Batako yang diambil langsung dari pabrik/produsen Batako, dengan pertimbangan bahwa 9 kelompok tersebut dapat mewakili wilayah tertentu. Metode penelitian yang digunakan adalah metode eksperimen dan deskriptif. Sebagai acuan yang berlaku di Indonesia menggunakan Standar Nasional Indonesia (SNI) 03-0349-1989. Dari hasil penelitian yang telah dilaksanakan, ternyata batako yang diuji tidak memenuhi syarat mutu SNI 03-0349-1989. Pada pengujian sifat tampak masih banyak contoh batako yang bidang permukaannya cacat, rusuk-rusuknya tidaksiku satu terhadap yang lainnya, sudut rusuknya mudah dirapihkan dengan kekuatan jari tangan sementara persyaratan pada sifat tampak dalam SNI 03-0349-1989 adalah bidang permukaan batako tidak boleh cacat, rusuk-rusuk batako siku satu terhadap yang lainnya, sudut rusuk batako tidak mudahdirapihkan dengan kekuatan jari tangan. Hasil pengujian sifat tampak kelompok A, B, C, E, F, I memenuhi SNI 03-0349-1989, sedangkan kelompok D, G, H tidak memenuhi memenuhi SNI 03-0349- 1989. Pada pengujian ukuran ternyata kelompok A, B, C, D, E, F, H, dan I untukukuran panjang, lebar, dan tebalnya tidak memenuhi toleransi SNI 03-0349-1989 yaitu untuk panjangnya minimum 38,5 cm dan maksimum 39,5 cm; lebarnyaminimum 18,5 cm dan maksimum 19,3 cm; tebalnya minimum 9,8 cm dan maksimum 10,2 cm. Hanya kelompok G yang ukuran panjangnya memenuhitoleransi yaitu 39,1 cm, sedangkan lebar dan tebalnya tidak memenuhi. Pada pengujian tebal dinding sekatan lubang semua contoh batako memenuhi SNI 03-0349-1989. Pada pengujian kuat tekan semua kelompok tidak memenuhi nilai minimum SNI 03-0349-1989 yaitu 20 kg/cm2. Pada pengujian penyerapan airsemua kelompok memenuhi SNI 03-0349-1989 yaitu maksimum 25 % (tingkat mutu I).
Epidemiology of Fractures Sustained During Electric Scooter Accidents
Authors: Shichman Ittai , Shaked Or , Factor Shai , Elbaz Etay , Khoury Amal
Published: March 2021

Background:

The use of electric scooters (e-scooters) has dramatically increased as they become an attractive alternative for public transportation in busy metropolitan areas worldwide. Despite their benefits, e-scooters challenge the health-care system with poorly understood forms of injuries, mainly orthopaedic fractures. To our knowledge, this study is the first to investigate e-scooter-related orthopaedic fracture patterns, mechanisms of injury, and management.

Methods:

Data on 3,331 e-scooter-related admissions were retrospectively collected between May 2017 and February 2020 in a level-I trauma center. These admissions were analyzed for demographic variables, orthopaedic fracture diagnosis (using the AO/OTA classification), associated injuries, and surgical treatment.

Results:

During the study period, a total of 716 fractures were diagnosed in 563 patients, with 46.4% of the patients requiring hospitalization. Of 492 upper-limb fractures, 89.2% occurred in a rider fall mechanism; and of 210 lower-limb fractures, 15.7% occurred in rider-vehicle collisions. Fifty-nine percent of long bone fractures were complex fragmentary and/or intra-articular fractures. Orthopaedic surgeons recommended that 225 fractures undergo surgical treatment. The most common upper-limb fracture was AO/OTA class 2R1A, with open reduction and internal fixation of the distal part of the radius being the most common upper-limb procedure (n = 58). The most common lower-limb fracture was AO/OTA class 41C, with open reduction and internal fixation of the proximal part of the tibia being the most common procedure (n = 28). A total of 22 patients (3.9%) required reoperation within 1 year.

Conclusions:

This investigation provides unique information on demographic characteristics, patterns, and treatment of orthopaedic fractures secondary to the high-energy mechanism of e-scooter injuries. These new in-depth data are important, first, for health-care system preparedness with regard to management and resource allocation to treat these challenging injuries and, second, for legislators promoting safety and injury prevention strategies.
Removal of Suspended Solids Using Pumice Stone in Integrated Fixed Film Activated Sludge Process
Authors: Shehab Diala , Al Haddad Ghassan , Hadid Mahmoud
Published: March 2021

Wastewater treatment plants operators prefer to make adjustments because they are more cost effective, to use the existing tank instead of building new ones. In this case an imported materials would be  used as bio-loads to increase biomass and thus maintain efficiency as the next organic loading increases.In the present study, a local substance "pumice stone" was used as a biological carrier in the aeration tank, and the experiments were carried out in five stages: without biological carriers, filling ratio of 4%,10%,20%, and25% with pumice stone, the maximum organic loading at each stage (1.1884, 1.2144, 1.9432, 2.7768, 3.3141)g BOD /l.d respectively.Other experiments were carried out to determine the best filling ratio, the SS removal ratio was (67.57%, 69.5%,79.44%,89.61%,and 99.2%) when the filling ratio with pumice stone was (0, 4, 10, 20, and 25)%  respectively, at organic loading 2 ± 0.0528 g BOD /l.d, so the best filling ratio of pumice stone was 25% .
In this case an imported materials would be  used as bio-loads to increase biomass and thus maintain efficiency as the next organic loading increases.
In this research, a local substance "pumice stone" was used as a biological carrier in the aeration tank, and the experiments were carried out in five stages: without biological carriers, filling ratio of 4%,10%,20%, and25% with pumice stone, The maximum organic loading at each stage (1.1884, 1.2144, 1.9432, 2.7768, 3.3141)g BOD /l.d respectively.
The SS removal ratio was when we operatio without biological carriers and with pumice stone with a filling ratio of 4% (82.86 % and 84.96 %) respectively, at organic loading 1.15 ± 0.0384 g BOD / d, the SS removal ratio when using pumice stone with a filling ratio of 4% and 10% was (80.36%, 91.59%) respectively, at organic loading 1.25 ± 0.024 g BOD /l.d
The SS removal ratio when using pumice stone with a filling ratio of 10% and 20% was (79.44%, 91.23%) respectively, at organic loading 2 ± 0.0528 g BOD /l.d ,  and The SS removal ratio when using pumice stone with a filling ratio of 20% and 25% was (80.45 %, 92.28%) respectively, at organic loading 2.85 ± 0.0624 g BOD /l.d ,which means there is  improvement in yield using pumice stone with filling ratio 4%,10%,20 and 25% by 2.1% ,11.23%,11.79% and 11.83%, respectively.
Intentional fallers with complex pelvic and acetabular fractures do not have worse radiological and functional outcomes than accidental fallers
Authors: Yu Yi-Hsun , Chou Ying-Chao , Yeh Bo-Yan , Hsu Yung-Heng , Chen I-Jung , Wei Lien-Chung
Published: March 2021

Individuals who fell from heights of > 6 m can suffer from complex pelvic and acetabular fractures. The extent to which an intentional fall correlates with prognosis and outcome after osteosynthesis is unclear. We aimed to investigate the clinical outcomes of fallers with pelvic and acetabular fractures after osteosynthesis and to compare the radiological and functional outcomes between intentional and accidental fallers. We retrospectively reviewed forty-nine fallers who fell from heights of > 6 m, developed pelvic and acetabular fractures, survived after resuscitation, and completed surgical treatments between 2014 and 2017. The fallers were divided into the intentional and accidental fallers. Sixteen patients were intentional fallers, whereas the rest of the patients fell accidentally. Psychiatric counselling was performed for each intentional fallers during their follow ups. All patients who fell intentionally had pre-existing mental disorders, and the major diagnosis was adjustment disorder. The group with intentional fallers had female sex predominance, higher injury and new injury severity scores, and longer hospital stay. However, the early loss of fixation (less than three month) and functional outcomes (Merle d'Aubigné and Majeed hip scores at 6- and 12-month follow-up) did not significantly differ between the intentional and accidental fallers. We found that the intentional fallers with pelvic and acetabular fractures might be accompanied by more severe combined injuries compared to accidental fallers. Under a standardized perioperative protocol and individualized physical and mental rehabilitation program, the functional and radiological outcomes of the intentional fallers could be comparable to those of the accidental fallers.
Acute Kidney Injuries of otherwise normal kidneys have different characteristics in different stages of COVID-19
Authors: Murt Ahmet , Dincer Mevlut Tamer , Karaca Cebrail , Trabulus Sinan , Karaali Ridvan , Balkan Ilker Inanc , Seyahi Nurhan , Altiparmak Mehmet Riza
Published: March 2021

BackgroundKidney involvement in COVID-19 may manifest as acute kidney injury (AKI). This study aimed to analyze and compare AKIs in different stages of COVID-19.Methods1056 hospitalized COVID-19 patients were retrospectively evaluated and 383 of them met the inclusion criteria. Eighty-nine patients who developed AKI, but didn’t have prior kidney diseases were involved in the final analysis. Patients were classified into three groups, those who had AKI on admission, those who developed AKI in the first week and those who developed AKI starting from the 7th day. Electrolytes, acid-base status and changes in the inflammatory markers were compared. ResultsPatients who developed AKI after the 7th day had higher peak CRP and D-dimer levels and lower nadir lymphocyte counts (p=0.000, 0.004 and 0.003 respectively). AKI that developed later was more related to immunologic response and had significantly higher mortality, reaching as high as 44% for those who developed AKI after 7th day. Patients who died had lower serum albumin levels than those who survived (p=0,000). Hematuria and proteinuria (p=0.001; OR: 2.4; 95% CI: 1.4 – 3.8 and p=0.015; OR: 4.34; 95% CI: 1.3 – 14.3 respectively) were more common in patients who died. Hypernatremia (p=0.000, OR: 6.5; 95% CI:3.0 – 13.9) and hyperchloremia (p=0,002, OR:3,8; 95%CI: 1,7 – 8,4) were also observed more often in patients who died.ConclusionsAKI in COVID-19 is not of one kind. When developed, AKI should be evaluated in conjunction with the disease stage and possible etiologies. AKI that develops later has a worse prognosis and is more related to electrolyte abnormalities.
High sodium ionic conductivity in PEO/PVP solid polymer electrolytes with InAs nanowire fillers
Authors: Devi Chandni , Gellanki Jnaneswari , Pettersson Håkan , Kumar Sandeep
Published: March 2021

Solid-state sodium ion batteries are frequently referred to as the most promising technology for future energy storage applications. However, developing a solid electrolyte with high ionic conductivity and a wide electrochemical stability window, remains a major challenge. Although solid-polymer electrolytes have attracted great interest due to their low cost, low density and very good processability, they generally have significantly lower ionic conductivity and poor mechanical strength. Here, we report on the development of a low-cost solid polymer electrolyte comprised of poly(ethylene oxide), poly(vinylpyrrolidone) and sodium hexafluorophosphate, mixed with indium arsenide nanowires. We show that the addition of 1.0 percent by weight of nanowires increases the sodium ion conductivity in the polymer to 1.50 × 10-4 Scm−1 at 40° C. This is the highest reported conductivity for any solid polymer electrolyte to date. In order to explain this remarkable characteristic, we propose a new transport model where sodium ions hop between close-spaced defect sites present on the surface of the nanowires, forming an effective complex conductive percolation network. Our work represents a significant advance in the development of novel solid polymer electrolytes with embedded ultrafast 1D percolation networks for next generations of low-cost, high-performance batteries with excellent energy storage capabilities.
Driving high capacity anode-free lithium metal batteries under unpressurized and lean electrolyte condition by an electron-deficient current collector
Authors: Kwon Hyeokjin , Lee Ju-Hyuk , Roh Youngil , Baek Jaewon , Shin Dong Jae , Yoon Jong Keon , Ha Hoe Jin , Kim Je Young , Kim Hee-Tak
Published: March 2021

The long-term cycling of anode-free lithium metal batteries (AF-LMBs) with a liquid electrolyte is hindered by the formation of inhomogeneous solid electrolyte interphase (SEI) on current collector and the subsequent irregular Li deposition. Here, we report the nano-window (NW) defect-enriched carbon current collector with a lowered Fermi level, which can address the critical issues. The low Fermi-level surface induces a defect-free SEI layer by alleviating electron tunneling at the interface, and leads to high Li nucleation density and lateral Li growth via Li-C orbital hybridization. DFT calculations and spectroscopic analyses elucidate that these effects are rooted in the electron deficiency of the NW defect structure. An AF-LMB employing an NCM811 cathode, NW-enriched 3D-current collector, and carbonate liquid electrolyte exhibits 90% capacity retention for over 50 cycles under unpressurized and lean electrolyte conditions. The defect chemistry presents a new design principle of tuning the electronic structure of current collectors enabling 3-dimensional Li deposition in AF-LMBs.
Financial, energy, performance and emission analysis of a repurpose used cooking oil (RUCO) diesel fuel blends
Authors: Verma Tikendra Nath , Dasore Abhishek , Shrivastava Pankaj , Ağbulut Ümit , Sarıdemir Suat , Rajak Upendra , Veza Ibham , Reddy Venguru Nageswara
Published: March 2021

In this study, exergy, energy, performance and emission analysis were investigated for the repurpose used cooking oil (RUCO), Jatropha curcas (JC), Pongamia Pinnata (PP) and petroleum diesel fuel (PDF) fueled compression ignition engine under various engine loads. In this study, 20% of each biodiesel was tested in single cylinder, four stroke, diesel engine, given that open literature shows the potential use of biodiesel of up to 20% in a diesel engine without modification. The diesel engine was used to investigate their performance, combustion and emission characteristics of diesel-repurpose used cooking oil, Jatropha curcas, and Pongamia Pinnata fuel samples at different compression ratios and load condition. The results showed that thermal efficiency is higher with the PDF compared to DRUCO20, DJC20, DPP20 biodiesel blends. The exhaust gas temperature decreased and specific fuel consumption of the engine were increased by adding RUCO, Jatropha curcas, Pongamia Pinnata to petroleum diesel fuel. Engine ecological analysis showed that blended fuel reduces the average hydrocarbons (HC), carbon monoxide (CO) and NO X than petroleum diesel fuel. While DRUCO20 showed better performance and reduction in ecological analysis but higher ecological of CO 2 is comparable with DCJ20 and DPP20.
Restoration of spermatogenesis in azoospermic mice by bone marrow mesenchymal stromal/stem cells conditioned medium
Authors: Zhankina Rano , Afshar Alireza , Farrar Zohreh , Khoradmehr Arezoo , Baghban Mandana , Suleiman Mahmud , Dorvash Mohammad Reza , Baghban Neda , Rahmanifar Farhad , Tanideh Nader , Hosseinabadi Omid Koohi , Monfared Ali Arabi , Zare Shahrokh , Khodabandeh Zahra , Farjam Mojtaba , Nabipour Iraj , Shirazi Reza , Zhanbyrbekuly Ulanbek , Tamadon Amin
Published: March 2021

One of the main cause of male infertility is non-obstructive azoospermia, which is not manageable medically. The first aim of the current research was to show the effect of extracellular vesicle-contained conditioned media (CM) instead of mesenchymal stromal/stem cells (MSCs) for treatment of non-obstructive azoospermia. In the next step, we aimed to study the differentiation potential of MSCs into spermatocytes after injection of MSCs in mice seminiferous tubules. This study has provided an applied treatment for busulfan-induced azoospermia using adipose tissue-derived (AT-MSCs) and bone marrow-derived MSCs (BM-MSCs) and bone marrow CM (BMCM) in animal models. In this regard, 30 male adult Balb/C mice (30±5g) and two female eGFP+/+ Balb/C mice (30±5g) were used to design experimental groups and to culture stem cells, respectively. Then, six groups including intact control, azoospermia, AT-MSC therapy, BM-MSC therapy, BMCM therapy, and spontaneous healing groups were considered. All groups except intact control were induced azoospermia by injecting two doses of busulfan (10 mg/kg) with 21 days’ interval. Testes of all mice were removed and studied through histomorphometry and flow cytometry analysis 60 days after treatment. Histomorphometry and flow cytometry evaluation of testes showed normal morphology of most of the seminiferous tubules of therapy groups as well as successful recovery of spermatogenesis, but spermatogenesis was not observed in the azoospermia group. It is worth notable that the results of the BM-MSC therapy group were more favorable than other therapy groups. Consequently, AT-MSC, BM-MSC and BMCM can be strongly suggested as candidates in the therapy of azoospermia.
Highly stable porous cellulose materials to utilize lactic acid
Authors: Kim So Hee , Kang Sang Wook
Published: March 2021

In this study, a porous membrane consisting of lactic acid and cellulose acetate was fabricated using a low-cost and pro-environmental process. The wetting action of the lactic acid induced a plasticization effect in the cellulose acetate chain, forming several small pores during the hydrostatic treatment. The surface and cross-section of the membranes were observed using scanning electron microscopy, and the interaction between cellulose acetate and lactic acid was investigated using Fourier transform infrared spectroscopy. Furthermore, thermogravimetric analysis was performed to determine the thermal stability of the membrane and the removal of lactic acid by the hydrostatic treatment. In addition, the optimum composition and performance of the composite were investigated via water flux measurement. Furthermore, the average pore diameter and porosity of the cellulose acetate/lactic acid membrane measured using a porosimeter was 0.38 μm and 65.3%, respectively.