1,720,959 research outputs found
The Effect of Modified Media on The Antibacterial Activity of The Sea Sponge Symbion Fungi, Fusarium solani
Full text linkThe purpose of this study was to analyze the biomass production and bioactivity of sponge symbiont mushroom extracts on modified media using experimental laboratory methods. Biomass was calculated by weighing the wet weight of the symbiont mushroom mycelium and then tested for antibacterial activity with an extract concentration of 500 µg/disk. The results of this study, namely the weight of F.solani mycelium on MKD + MGV media was 10 grams, the mass of mycelium on MKD media was 9 grams, while the mass of mycelium on MEB standard media was 9.7 grams. The yield weight of the F.solani crude extract cultured on MKD + MGV media was 0.0386 grams or 0.3860% of the wet weight, on MKD media it showed that the crude extract weight was 0.0276 grams or 0.3067% of the wet weight, while on MEB the crude extract weight was 0.0119 grams or 0.1190% of the wet weight. The results of the antibacterial test showed that the largest inhibition zone for MDR (Meticilin Resistant Staphylococcus aureus) bacteria was F.solani crude extract cultured on MKD + MGV media, namely 25.83 ± 3.37 mm, F.solani cultured on MKD media of 22.10 ± 2.51 mm , while F. solani cultured on MEB media was 19.00 ± 0.52 mm. The results of the mass culture of the fungus Fusarium solani on modified media showed that the mushrooms cultured on MKD + MGV media had greater biomass, crude extract and antibacterial activity compared to MKD and MEB culture media
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
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
Analisis Tingkat Pencemaran Tambak Udang di Sekitar Perairan Laut Desa Padak Guar Kecamatan Sambelia Kabupaten Lombok Timur
Full text linkTTambak udang di Desa Padak Guar berpotensi menyebabkan pengaruh buruk terhadap kualitas perairan. Limbah yang berasal dari tambak udang apabila cara pengelolaannya tidak secara intensif akan berdampak pada kualitas perairan yang tidak sesuai dengan baku mutu air laut. Tujuan penelitian ini adalah mengetahui tingkat pencemaran perairan laut di Desa Padak Guar yang disebabkan oleh limbah tambak udang dengan menggunakan Indeks Pencemaran (IP). Penelitian ini menggunakan metode survei, pengumpulan data dilakukan secara langsung di lapangan. Sampel yang diambil berupa air laut yang diambil dari badan perairan laut disekitar pembuangan limbah tambak udang. Metode sampling yang digunakan menggunakan metode purposive sampling dengan menetapkan 4 stasiun pengamatan. Pengukuran parameter fisika dan kimia dilakukan seacar in-situ. Tempat penelitian dilakukan di Desa Padak Pugar Kecamatan Sambelia Kabupaten Lombok Timur Provinsi Nusa Tenggara Barat. Kesimpulan yang dapat diambil dari penelitian ini adalah konsentrasi perairan laut di sekitar Desa Padak Guar telah melewati ambang batas yang diperbolehkan menurut PP Nomor 22 Tahun 2021 untuk parameter Fosfat, Nitrit, Ammonia Total dan DO. Berdasarkan hasil perhitungan indeks pencemaran (IP) di perairan laut Desa Padak Guar telah termasuk dalam kategori tercemar ringan (Kepmen LH No. 115 Tahun 2003
Analisis Peningkatan Produktifitas Udang Vaname Melalui SIMORIKA di Desa Sukadana Lombok Utara
Full text linkThis study aims to analyze the effect of the implementation of the Water Quality Monitoring and Control System (SIMORIKA) on increasing the productivity of Vaname shrimp cultivation in Sukadana Village, North Lombok Regency. SIMORIKA is a technology-based innovation that allows farmers to monitor water quality in real-time, so that cultivation decisions can be made quickly and accurately. The research method used is a quantitative approach with a pre-experimental design using a one-group pretest-posttest model. The results showed that after the implementation of SIMORIKA, there was a significant increase in Vaname shrimp productivity, as measured by the survival rate (SR), harvest weight, and feed efficiency. These findings indicate that monitoring technology such as SIMORIKA has great potential in supporting the sustainability and efficiency of the aquaculture sector.Penelitian ini bertujuan untuk menganalisis pengaruh penerapan Sistem Monitoring danKontrol Kualitas Air (SIMORIKA) terhadap peningkatan produktivitas budidaya udangVaname di Desa Sukadana, Kabupaten Lombok Utara. SIMORIKA merupakan inovasiberbasis teknologi yang memungkinkan petambak melakukan pemantauan kualitas air secarareal-time, sehingga keputusan budidaya dapat dilakukan secara cepat dan tepat. Metodepenelitian yang digunakan adalah pendekatan kuantitatif dengan desain pra-eksperimenmenggunakan model one-group pretest-posttest. Hasil penelitian menunjukkan bahwa setelahpenerapan SIMORIKA, terjadi peningkatan signifikan pada produktivitas udang Vaname, yangdiukur dari tingkat kelangsungan hidup (SR), bobot panen, dan efisiensi pakan. Temuan inimenunjukkan bahwa teknologi monitoring seperti SIMORIKA memiliki potensi besar dalammendukung keberlanjutan dan efisiensi sektor perikanan budidaya
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
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