102,075 research outputs found
Uji Efektivitas Beberapa Entomopatogen Untuk Mengendalikan Hama Ulat Api (Setothosea Asigna)Pada Kelapa Sawit (Elaeis Quineensis Jacq)
Full text linkBarita Tampubolon, 2019.“UjiEfektivitas Beberapa Entomopatogen Unatuk Mengendalikan Hama Ulat Api (Sethotosea asigna) Pada Kelapa Sawit (Elaeis quineensis Jacq) di Laboratorium” DibimbingolehIr.H. LahmuddinLubis M.P. dan Ir. Hj .EfridaLubis M.P. Penelitian inibertujuanuntukmengetahuiefektivitasBacillusthuringiensis, Beaveria bassiana,danMetarhiziumanisopliaeterhadapmortalitashamaulatapi (Setothosea asigna), padatarafkonsentarasi yang berbeda. Penelitianiniakandilaksanakan di BalaiBesarKarantinaMedan Petisah, Medan. Penelitiandilaksanakan padabulan April 2018 sampaidenganselesai.PenelitianiniMenggunakanRancanganAcakLengkap (RAL) non-faktorial yang terdiridari7perlakuanyaitu, A0 (Kontrol), A1 (Bacillusthuringiensisdengankonsentrasi20 g/l air }, A2 = (Bacillusthuringiensisdengankonsentrasi40 g/l air), A3 (Beaveria bassianadengankonsentrasi20 g/l air), A4(Beaveria bassianadengankonsentrasi40 g/l air), A5 (Metarhiziumanisopliaedengankonsentrasi20 g/l air), A6 (Metarhiziumanisopliaedengankonsentrasi40 g/l air). Parameter yang diamatadalahpersentasemortalitas, gejalakematiandanwaktukematian larva Setothosea asigna. HasilPenelitianmenunjukkanbahwaperlakuanMetarhizium anisopliae40 g/l air dan 20 g/l air, palingefektifdariseluruhperlakuanterhadapmortalitasSethotosea asignasebesar 100% dan 97,5 %. GejalakematianSetothosea asigna yang terinfeksiB. bassianapergerakan akan kurang aktif kemudian ulat akan diam lalu akan berhenti makan sampai mati, sedangkanpadaperlakuanB. thuringiensisulat tidak bergerak aktif kemudian ulat berubah warna dari hijau menjadi cokelat sampai berlendir dan mengeluarkan bau busuk.Waktukematian larva Setothosea asigna yang paling cepatyaituperlakuanMetarhizium anisopliae40 g/l air yang mencapaimortalitas 100% pada3harisetelahaplikasi
Mapping evolutionary trajectories: Applications to the growth and transformation of medical knowledge
No full textThis paper is concerned with the mechanisms through which medical knowledge emerges, grows and transforms itself. It is a large-scale empirical analysis of the development of treatments for coronary artery disease, which is the most common cause of death in developed countries. We uncover the structure of medical understanding of the disease and the path-dependent co-evolution of scientific and technical knowledge in the search for solutions to the relevant set of problems. After reviewing a broad range of secondary sources and a number of interviews with leading clinicians, we use new tools recently developed for the longitudinal analysis of large citation networks. We apply them to a bibliographic database of 11,240 papers published in the area of coronary artery disease between 1979 and 2003 and to a patent dataset of 5136 US patents documents granted between 1976 and 2003 for angioplasty-related devices. The results are consistent maps, which we critically discuss, of the major scientific and technological trajectories associated with one of the most important medical procedures of the last 30 years. © 2007 Elsevier B.V. All rights reserved
Bibliographie Hilarion G. Petzold 1958 – 2009 mit Anhang als Einführung
No full textDieses Archiv enthält die Gesamtbibliographie der Werke des Autors nebst einiger Texte „Über H. G. Petzold“ im Schlussteil der Bibliographie sowie einen Anhang mit einer Einführung in die Architektur des Werkes in seinem wissenslogischen Aufbau als Ausarbeitung seines „Tree of Science Modells“ (2007).This archive contains the complete bibliography of the author and some texts about H. G. Petzold, moreover an epilogue with an introduction to the architecture of the works in its epistemological structure and composition and as an elaborations of Petzold’s „Tree of Science Modell (2007).https://www.fpi-publikation.de/polyloge/01-2009-petzold-h-g-gesamtbibliographie-h-g-petzold-1958-2009-updating-november2009/peerReviewedpublishedVersio
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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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3346: Samuel G. Freedman, author, 2013
No full textPhotograph of author Samuel G. Freedman, at NT Daily Slash meeting in the Mayborn School of Journalism at UNT
Pengaruh Kedalaman Tanam, Nitrogen Dan Aplikasi Parakuat terhadap Pertumbuhan Eleusine Indica L. Gaertn Resisten- dan Sensitif-Parakuat
No full textCHRISTIAN TAMPUBOLON: Effect of burial depth, nitrogen, and
paraquat on the growth of Eleusine Indica resistant- paraquat and susceptible- ,
supervised by Edison Purba danT. Chairun Nisa, B
Eleusine indica is one among the weeds that has significantly
negative effects on agricuture which is commonly found in agriculture fields and
public areas. This research aims to determine the effect of burial depth of seeds,
nitrogen, and paraquat to the growth of E. indica resistant-paraquat and
susceptible-paraquat. This research was carried out in 3 experiment units were;
the comparison of seedling number of E. indica resistant-paraquat and
susceptible-paraquat which emerge at 5 burial depths namely 0, 2.5, 5, 7.5 , and
10 cm, the growth response of E. indica resistant-paraquat and susceptible-
paraquat to nitrogen at 3 doses namely 0, 200, dan 400 kg ha-1 , and the effect of
paraquat on the growth of E. indica resistant-paraquat and susceptible-paraquat
at 7 doses namely 0, 50, 100, 200, 400, 800, 1600 g a.i. ha -1 . Non factorial
randomised block design (RBD) with three replication was used for each unit of
experiment.
The results showed that the burial depth significantly reduced number of
seedlings that emerged. The seedling number was highly on 0 cm and the seedling
ability in ETS was higher than EFH. Nitrogen significantly increase number of
tillers and weed’s dry weight but showed nonsignificantly effect on the number of
panicles and seeds. The best dose of nitrogen that showed significantly effect was
400 kg ha-1 . Paraquat significantly reduced the number of weeds that survive and
weed’s dry weight for susceptible- paraquat population but it was nonsignificant
for weed’s dry weight for resistant- paraquat population. The dose of paraquat
that kill the weeds was 1600 g a.i. ha-1 .71 HalamanSkripsi Sarjan
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