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RANCANG BANGUN ALAT SCREW EXTRUDER UNTUK PEMBUATAN PAPAN PARTIKEL CAMPURAN TANDAN KOSONG KELAPA SAWIT DAN PLASTIK LOW DENSITY POLYETHYLENE (LDPE) (PengaruhKomposisiBahan Baku danSuhuExtruder)
Get PDF(Dytha Florenza, 2021; 48 Halaman, 5 Tabel, 21 Gambar)
Screw extruder merupakanmesindenganpenggerak motor DC denganpemanasberupa band heatersebagaielemenutamadenganjenis material plastik yang akandilelehkan. Penelitianinibertujuanuntukmembuatalatscrew extruderuntukpencampuranserbuktandankosongkelapasawitdengan plastic LDPE menjadipapanpartikelukuran 20 x 10 yang memenuhi SNI 03-2015-2006 untukpelapisdindingruangan. Parameter yang diukurialahkerapatan, kadar air, penambahantebal, dandayaserap air daripapanpartikel yang dihasilkandenganvariasikomposisibahan TKKS:LDPE 20:80, 25:75, 30:70, 35:75, 40:60, danvariasisuhu extruder 250ºC, 270ºC, dan 290ºC denganputaran screw tetapsebesar 20 rpm. Perancanganalatscrew extruderinimemilikikapasitasmaksimal 19 kg/jam denganputaran screw maksimal 100 rpm. Komposisi TKKS:LDPE 20:80 dengansuhu extruder 290ºC menghasilkanpapanpartikeldengannilaikerapatansebesar 0,75 gr/cm3dengankadar air minimum 0,11%, dayaserap air minimum 13,04%, danpenambahantebal minimum sebesar 3,05%. Dari variasisuhu extruder 250ºC, 270ºC, dan 290ºC yang telahdilakukanpadapembuatanpapanpartikel, didapatkankondisi optimum yaitupadasuhu extruder 290ºC dankondisi optimum variasikomposisi TKKS:LDPE adalahsebesar 20:80. Papanpartikel yang dihasilkandarialat screw extruder telahmemenuhi SNI 03-2015-2006 dengankondisi optimum suhuektruder 290ºC dankondidi optimum perbankomposisi TKKS:LDPE adalah 20:80
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Rancang Bangun Alat Screw Extruder Untuk Pembuatan Papan Partikel Campuran Tandan Kosong Kelapa Sawit dan Plastik LDPE
Get PDFScrew Extruder merupakan mesin dengan penggerak motor DC dengan pemanas berupa band heater sebagai elemen utama dengan jenis plastic yang akan dilelehkan. Penelitian ini bertujuan untuk membuat alat screw extruder untuk pencampuran serbuk tandan kosong kelapa sawit dan plastik Low Density Polyethylene (LDPE) menjadi papan partikel ukuran 20x10 yang memenuhi SNI 03-2015-2006 untuk pelapis dinding ruangan. Percobaaan dilakukan dengan tiga tahapan proses yaitu pre-treatment tandan kosong kelapa sawit, tahap pembuatan papan partikel dengan menggunakan alat screw extruder, dan tahap analisa papan partikel yang dihasilkan. Parameter yang diukur ialah kerapatan, kadar air, penambahan tebal, dan daya serap air dari papan partikel yang dihasilkan dengan variasi komposisi bahan TKKS:LDPE 20:80, 25:75, 30:70, 35:75, 40:60, dan variasi suhu extruder 250ºC, 270ºC, dan 290ºC dengan putaran screw tetap sebesar 20 rpm. Perancangan alat screw extruder ini memiliki kapasitas maksimal 19 kg/jam dengan putaran screw maksimal 100 rpm. Komposisi TKKS:LDPE 20:80 dengan suhu extruder 290ºC menghasilkan papan partikel dengan nilai kerapatan sebesar 0,75 gr/cm3 dengan kadar air minimum 0,11%, daya serap air minimum 13,04%, dan penambahan tebal minimum sebesar 3,05%. Dari variasi suhu extruder 250ºC, 270ºC, dan 290ºC yang telah dilakukan pada pembuatan papan partikel, didapatkan kondisi optimum yaitu pada suhu extruder 290ºC dan kondisi optimum variasi komposisi TKKS:LDPE adalah sebesar 20:80. Papan partikel yang dihasilkan dari alat screw extruder telah memenuhi SNI 03-2015-2006 dengan kondisi optimum suhu ektruder 290ºC dan kondidi optimum perban komposisi TKKS:LDPE adalah 20:80
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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