1,720,960 research outputs found
PENGARUH SEKAM DAN ABU SEKAM TERHADAP PERTUMBUHAN DAN KEMATIAN TANAMAN PANILI (Vanilla planifolia Andrews) DI PEMBIBITAN
Get PDFPenelitian telah dilaksanakan di Kebun Percobaan Cimanggu, Balai Penelitian Tanaman Rempah dan Obat mulai bulan April sampai dengan Agustus 1997, bertujuan untuk mengetahui pengaruh perlakuan sekam dan abu sekam terhadap pertumbuhan dan tingkat kematian tanaman. Perlakuan yang diuji adalah (1) dosis sekam yang terdiri atas 0, 50, 100, dan 200 g/ polibag; (2) abu sekam yang terdiri atas 0, 50, 100 dan 200 g/polibag, sehingga diperoleh 16 kombinasi perlakuan. Setiap polibag berisi 4 kg, terdiri atas campuran tanah, pasir dan pupuk kandang dengan perbandingan 2 : 1 : 1. Penelitian mengguna- kan rancangan Acak Kelompok faktorial yang diulang 3 kali dengan 4 tanaman/ perlakuan. Secara tunggal penggunaan 50 g sekam/polibag dan 50 g abu sekam/polibag berpengaruh baik terhadap pertumbuhan bibit panili, namun dengan tingkat kematian tinggi. Disarankan untuk menggunakan 200 g sekam/polibag atau 100 g abu sekam/ polibag untuk memperoleh pertumbuhan yang cukup baik dengan tingkat kematian relatif kecil
PENGARUH JENIS DAN DAERAH PELETAKAN PUPUK TERHADAP PERTUMBUHAN TANAMAN JAMBU MENTE (Anacardium Occidentale) PADA TAHUN EL-NINO DAN NORMALEFFECT OF KIND AND STOPAGE AREA ON THE GROWTH OF CASHEW (Anacardium Occidentale) ...
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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
POTENSI ADAS (Foeniculum vulgare) SEBAGAI BAHAN AKTIF LOTION ANTI NYAMUK DEMAM BERDARAH(Aedes aegypti)
Get PDFPenelitian dilakukan pada tahun 2007-2008 di Laboratorium Entomologi, Balai Penelitian Tanaman Obat dan Aro-matik. Penelitian disusun dengan rancang-an acak lengkap, terdiri dari 5 taraf per-lakuan konsentrasi minyak adas (0; 1,25; 2,5; 5; dan 10%), dan diulang sebanyak sepuluh kali. Pengamatan dilakukan terha-dap uji organoleptik, yaitu meliputi homo-genitas formula, warna, aroma, uji iritasi, pH, viskositas, serta uji daya proteksi. Pengujian dilakukan selama enam jam, sedangkan pengolesan lotion hanya dila-kukan satu kali, pada saat awal pengujian untuk melihat daya tahan lotion. Hasil menunjukkan bahwa formula lotion anti nyamuk bercampur secara homogen yang dilihat pada bulan pertama hingga bulan ketiga. Lotion berwarna agak kekuningan, sebagai akibat dari warna minyak atsiri adas yang berwarna kekuningan. Aroma formula berbau khas seperti minyak telon dengan aroma yang stabil sampai penga-matan bulan ke tiga. Lotion tidak menye-babkan iritasi atau ketidak-nyamanan pada pengguna selama pemakaian enam jam. pH formula lotion hampir merata yaitu sekitar 8,6 lebih, dimana pH ideal sebagai lotion adalah mendekati netral (7). Oleh karena itu perlu pengurangan kadar tri-etanolamin pada formula untuk menu-runkan pH. Terdapat korelasi positif antara konsentrasi minyak atsiri adas dengan viskositas formula, yaitu semakin tinggi kandungan minyak atsiri adas, semakin tinggi viskositasnya. Minyak atsiri adas bersifat repellent (menolak) nyamuk A. aegypti, namun demikian pada konsen-trasi 1,25 dan 2,5% hanya menampakkan efektifitasnya pada jam pertama pengu-jian. Sedangkan pada konsentrasi 5 dan 10%, efektifitasnya dapat bertahan sela-ma dua jam dengan menunjukkan daya proteksi di atas 50%, setelah itu daya proteksi mulai menurun.
Komunikasi ilmiah pengembangan tanaman industri dan perkebunan pada lahan kritis sekitar danau Singkarak-Sumatera Barat
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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
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