1,720,956 research outputs found
Studi Patogenisitas Phytophthora nicotianae V Bdh dan Pengendaliannya dengan Trichoderma koningii Oudem pada Beberapa Varietas Tembakau Deli
No full textPhytophthora nicotianae is one of primary disease at tobacco areas. It
influences the capital income because tobacco is one of the important export
commodities. P. nicotianae \s a soil born pathogen that can stay life long in the
soil. So it is diffrcult to control. The objective of this research was to know the
resistance level of some Deli tobacco variety to P. nicotiareae. Secondlyto know
the potential of L fuiningii and the secondary metabolite in conholling P.
nicotianae on some tobacco variety. This research was done at Balai Penelitian
Tembakau Deli (BPTD) PTPN II, from December 2008 to May 2009. It consisted
of five activities, i.e. (l) pathogentest on P. nicotianae in some tobacco variety,
(2) T. koningii antifungal suspension test towards P. nicotianae in some tobacco
variety, (3) T. koningii conidial antagonistic activity test towards P. nicotianae in
some tobacco variety, g) f. koningii antifungal suspension resistant induction
towards P. nicotianae in some tobacco variety, (5) T. koningii conidial resistant
induction towards P. nicotianae in some tobacco variety. Furthermore, Deli-4, Fl
45, NC 95 and FIN were varieties used in this research.
The results of the analysis showed that NC 95 was the most resistence
variety of the four, but Deli-4 was the most susceptible. The conidia and
secondary metabolite of T. kaningii were able to control of P. nicotianae. lts
secondary metabolite more effective rather than its conidia both in treatment and
pre inoculation138 HalamanTesis Magiste
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
PENGEMBANGAN TEKNIK SEROLOGI UNTUK DETEKSI DINI PENYAKIT JAMUR AKAR PUTIH (RIGIDOPORUS MICROPORUS) PADA TANAMAN KARET
Get PDFPenyakit Jamur Akar Putih (JAP) yang disebabkan oleh Rigidoporus microporus merupakan salah satu penyakit penting pada tanaman karet. Penyakit ini dapat menimbulkan kerugian besar karena mengakibatkan kematian tanaman dan tambahan biaya yang cukup tinggi untuk pengendalian penyakit tersebut. Oleh karena itu, usaha pencegahan melalui deteksi dini akan lebih efektif dan ekonomis dari pada pendekatan kuratif. Deteksi dini gejala penyakit JAP secara konvensional masih sulit dilakukan, dan baru diketahui secara pasti ketika serangan patogen sudah sampai pada tahap lanjut (stadia berat). Upaya mempercepat deteksi ini membutuhkan teknologi yang praktis dan mudah diadopsi oleh para pekebun. Perangkat teknologi untuk mendeteksi adanya materi protein dapat dilakukan melalui pemeriksaan antibodi yang berada di dalam serum. Tujuan dari penelitian ini adalah mengembangkan teknik serologis untuk mendeteksi gejala serangan dini penyakit jamur akar putih. Hasil penelitian menunjukkan bahwa produksi antibodi untuk mendeteksi JAP dapat diperoleh dengan mengimunisasi ayam petelur dengan ekstrak kasar fruiting body (AgF) atau miselium (AgM) sebanyak dua kali dengan interval 3 hari. Antibodi hasil reaksi inokulasi ekstrak badan buah (AbF) dan ekstrak miselium (AbM) dapat mengenali AgM dan AgF dengan tingkat reaksi yang berbeda. AbM tidak dapat secara spesifik mendeteksi adanya infeksi JAP melalui daun dan kurang sensitif mendeteksi miselium di tanah. Sebaliknya AbF dapat mendeteksi tanaman terserang JAP melalui daun dan dapat mendeteksi miselium di dalam tanah
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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