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PEMBUATAN BRIKET DARI CAMPURAN CANGKANG BIJI KARET (Hevea brasiliensis) DAN TANDAN KOSONG KELAPA SAWIT
Get PDFABSTRAK
PEMBUATAN BRIKET DARI CAMPURAN CANGKANG BIJI KARET
(Hevea brasiliensis) DAN TANDAN KOSONG KELAPA SAWIT
Oleh :
Ebid Diyah Safitri
1611060425
Penelitian ini bertujuan untuk mengetahui kombinasi terbaik pembuatan
briket dari campuran cangkang biji karet (Hevea brasiliensis) dan tandan kosong
kelapa sawit dengan penambahan batubara sebagai briket dan menggunakan
perekat tapioka. Hal ini didasari oleh jumlah kebutuhan energi semakin banyak,
sementara itu pemanfaatan cangkang biji karet (Hevea brasiliensis) masih kurang
serta belum diketahui kombinasi yang optimal untuk dijadikan briket. Penelitian
ini disusun secara deskriptif kualitatif. Berdasarkan komposisi bahan utama antara
cangkang biji karet, tandan kosong kelapa sawit dan batubara yang terdiri dari 5
taraf perlakuan diantaranya 55%:15%:30% (P1), 15%:55%:30% (P2),
35%:35%:30% (P3), 45%:25%:30% (P4), dan 25%:45%:30% (P5). Dengan
menggunakan persentase perekat tapioka 20% dari bobot bahan baku yang
digunakan untuk pembuatan briket. Parameter yang diukur dalam penelitian ini
adalah kadar air, kadar abu briket, kerapatan briket, kekuatan tekan briket, dan
Shatter resistance index briket. Data yang diperoleh disajikan dalam bentuk tabel
dan diagram diuraikan secara deskriptif kuantitatif. Hasil penelitian menunjukkan
bahwa kadar air briket berkisar 5,98-6,03% (SNI<8%), nilai kadar abu 3,70-
7,41% (SNI <8%), nilai kerapatan 0,43-0,44 g/cm2 (SNI 0,44 g/cm2
), nilai
kekuatan tekan briket senilai 96,6-99,7 (SNI >95%), nilai shatter resisten index
96,15-99,90% (>95%). Hasil penelitian tersebut menunjukkan bahwa semakin
banyak komposisi bahan baku cangkang biji karet maka semakin baik pula
kualitas briket yaitu pada kombinasi perlakuan P1. njyyyyyyyyyyyyyyyy
Elicited soybean (Glycine max) extract effect on improving levels of Ter-119+Cd59+ in a mouse model fed a high fat-fructose diet
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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
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
ANALISIS UJI BEDA VOLUME PERDAGANGAN DAN ABNORMAL RETURN S AHAM SEBELUM DAN SESUDAH STOCK SPLIT DI BURSA EFEK INDONESIA PERIODE 2005-2009
Get PDFPenelitian ini mencoba untuk menjelaskan tentang ada atau tidak perbedaan antara volume
perdagangan dan abnormal return sebelum dan sesudah pengumuman stock split. Reaksi pasar
telah menunjukkan dengan stock split merubah rata
-rata volume perdagangan dan abnormal
return. Tujuan penelitian ini adalah untuk menganalisis perbedaan antara volume perdagangan
dan abnormal return sebelum dan sesudah stock split. Populasi dipilih untuk penelitian ini adalah
seluruh perusahaan yang terdaftar di Bursa Efek Indonesia. Sampel terdiri dari 41 perusahaan
yang melakukan pemecahan saham selama periode Januari
2005 sampai dengan Desember 2009.
Metode yang digunakan adalah purposive sampling.
Berdasarkan hasil analisis data, dapat disimpulkan bahwa sebagai hasil keseluruhan dari uji
statistik pada periode 10 hari sebelum dan sesudah pengumuman
stock split untuk volume
perdagangan diketahui bahwa hasil keseluruhan menunjukkan ada perbedaan antara rata
-rata
volume perdagangan sebelum dengan sesudah pengumuman
stock split. Begitupula pada rata-
rata
abnormal return sebagai hasil keseluruhan dari uji statistik pada 10 hari sebelum dan setelah
pengumuman
stock split menunjukkan ada perbedaan yang signifikan terhadap abnormal return
pada sebelum dan sesudah periode pengumuman
stock split.
Kata Kunci :
Stock Split, Volume Perdagangan, Abnormal Retur
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