1,720,954 research outputs found
PENGARUH DOSIS FORMULASI BAKTERI Pseudomonas diminuta DAN Bacillus mycoides
No full textPenelitian ini bertujuan untuk mengetahui pengaruh dosis formulasi bakteri P. diminuta dan B. mycoides terhadap tanaman kentang
(Solanum tuberosum) yang terserang nematoda sista kentang di lahan. Penelitian ini dilaksanakan di desa Sumber Brantas, dusun
Jurangkuali, kecamatan Bumiaji, Kota Batu, Jawa Timur dan Laboratorium Nematologi Jurusan HPT Fakultas Pertanian Universitas
Jember dengan waktu penelitian yaitu pada Juli 2014 – Oktober 2014. Penelitian ini menggunakan rancangan petak terbagi (Split Plot
design) dengan dosis sebagai sub plot, yaitu 0 gram (kontrol); 20 g; 30 g; dan 40 g serta main plot merupakan macam bakteri yaitu P.
diminuta; B. mycoides; dan campuran keduanya dengan perbandingan sama. Variabel yang diamati yaitu tinggi tanaman, panjang akar, dan
berat umbi kentang. Hasil yang diperoleh setelah penelitian menunjukkan bahwa aplikasi formulasi bakteri dengan perbedaan bakteri tidak
berbeda nyata terhadap seluruh variabel, sedangkan dosis formulasi bakteri yang diberikan menghasilkan perbedaan sangat nyata pada
variabel berat umbi kentang dan tidak berbeda nyata pada parameter tinggi tanaman dan panang akar. Kemudian dilakukan analisis data
umbi kentang dengan uji lanjut polinomial orthogonal dan diperoleh bahwa dosis formulasi yang paling optimum dalam meningkatkan berat
umbi kentang yaitu rata-rata pada dosis 30 gram
PEMETAAN KEBERADAAN CENDAWAN PATOGEN TULAR TANAH Rhizoctonia solani
No full textCendawan patogen tular tanah merupakan salah satu jenis patogen yang menginfeksi tanaman tembakau dan dapat menurunkan produktivitas tanaman
tembakau. Beberapa cendawan patogen tular tanah seperti cendawan Rhizoctonia solani dapat menyerang yang menyebabkan penyakit (damping off) pada
tanaman tembakau. Selain itu cendawan Phytophthora nicotianae juga merupakan salah satu patogen penting yang dapat menyebabkan penyakit lanas pada
tanaman tembakau. Berdasarkan adanya gangguan yang disebabkan oleh cendawan patogen tular tanah tersebut, maka diperlukan suatu deteksi dini untuk
mengetahui keberadaan cendawan patogen tular tanah tersebut pada suatu lahan di suatu daerah. Deteksi dini dapat dilakukan dengan menggunakan pendekatan
secara molekuler dengan metode Polymerase Chain Reaction (PCR) sebagai suatu metode cepat untuk mendeteksi keberadaan cendawan patogen tular tanah.
Delapan belas sampel tanah yang diujikan diketahui mempunyai tingkat infestasi dan variasi yang berbeda-beda. Tingkat infestasi tertinggi terdapat pada tiga
daerah di Kabupaten Probolinggo, sedangakan pada tingkat variasi rata-rata setiap daerah mempunyai tingkat variasi cendawan yang sama. Proses amplifikasi
DNA dengan PCR yang dilakukan untuk cendawan R. solani diketahui pita DNA teramplifikasi pada lane daerah Tanjung rejo, Tutul, Selomukti dan
Maskuning wetan. Sedangkan untuk cendawan P. nicotianae pita DNA teramplifikasi pada lane daerah Kabat dan Sumber anyar
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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