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Efektifitas Ekstrak Daun Pepaya (Carica papaya) dengan Dosis Berbeda Terhadap Daya Tetas Telur Ikan Nila (Oreochromis niloticus)
No full textMasalah yang dihadapi pembudidaya ikan yaitu rendahnya pasokan telur yang diakibatkan
rendahnya daya tetas telur, serangan mikroba serta penyakit lainnya. Daun pepaya merupakan
salah satu dari tanaman yang dapat dipergunakan untuk prosess percepatan daya tetas telur ikan.
Pepaya sendiri dapat digunakan sebagai komponen untuk meningkatkan sistem imun karena
dari pepaya terdapat kandungan enzim papain.Tujuan penelitian ini adalah Untuk
membandingkan daya tetas telur ikan nila (Oreochromis niloticus) pada perlakuan ekstrak daun
pepaya (Carica papaya) dengan dosis berbeda, Untuk mengetahui konsentrasi dosis ekstrak
daun pepaya (Carica papaya) dengan dosis berbeda yang terbaik untuk daya tetas telur ikan
nila (Oreochromis niloticus). Penelitian ini menggunakan Rancangan Acak Lengkap (RAL)
dimana terdapat 4 perlakuan yaitu P1 : ekstrak daun pepaya 4 mL/L, P2 : ekstrak daun pepaya
6 mL/L, P3 : ekstrak daun pepaya 10 mL/L, dan P4 : kontrol tanpa diberi perlakuan. Pada setiap
perlakuan terdapat 3 kali ulangan. Analisis data menggunakan uji ANOVA dan dilanjut dengan
uji BNT apabila terdapat perbedaan nyata pada perlakuan. Hasil penelitian menunjukkan
terdapat perbedaan nyata perlakuan dengan penambahan ekstrak daun pepaya terhadap daya
tetas telur ikan nila dengan perlakuan P1 (4 mL/L) merupakan perlakuan terbaik dalam
meningkatkan persentase daya tetas telur ikan nila sebesar 88,33%
Pengaruh Kualitas Air Terhadap Daya Tetas Telur Ikan Nila (Oreochromis niloticus) Ditambah Ekstrak Daun Pepaya (Carica papaya) dengan Dosis Berbeda
Get PDFNile tilapia (Oreochromis niloticus) is a freshwater fishery commodity that has commercial value. Very fast growth and has a distinctive meat taste make tilapia so popular with people both in Indonesia and abroad. However, a decrease in water quality can affect growth, including the hatchability of tilapia eggs. This study aims to determine the effect of water quality given papaya leaf extract (Carica papaya) with different doses on the hatchability of nile tilapia (Oreochromis niloticus) eggs. The method used is the experimental method. Data were analyzed using multiple linear regression to determine the effect of water quality on the hatchability of Nile tilapia eggs. The research results obtained were temperatures ranging from 25.1 to 27.50C, for pH ranging from 6.1 to 8.53, and for DO ranging from 5.16 to 6.70 and still within optimal limits for the hatching and growth of Nile tilapia eggs (Oreochromis niloticus). The research results found that temperature and pH had a small effect on the hatchability of Nile tilapia eggs, respectively 16.79% and 16.44%, while dissolved oxygen had a large effect on the hatchability of fish eggs, a value of 86.21. %
The effect of papaya leaf extract (Carica papaya) with concentration on egg hatchability of nile tilapia (Oreochromis niloticus)
No full textDelays in hatching of fish eggs are influenced by several factors such as water quality instability during rearing, including; temperature, DO, pH. Papaya leaf is one of the plants that can be used to accelerate the hatchability of fish eggs. Papaya itself can be used as a component to boost the immune system because it contains the enzyme papain. The purpose of this study was to compare the hatchability of nile tilapia (Oreochromis niloticus) eggs in the treatment of papaya leaf extract (Carica papaya) with different doses. This research was conducted at the Punten Cultivation Fisheries Installation, Batu City in December 2022. Using a Completely Randomized Design (CRD) where there were 4 treatments, namely: A) papaya leaf extract 4 mL/L, B) papaya leaf extract 6 mL/L, C ) papaya leaf extract 10 mL/L, and D) control without treatment. In each treatment there were 3 repetitions. The ANOVA test was used to compare the effect of papaya leaf extract on hatchability of tilapia eggs, and was followed up with the BNT test if there were significant differences in the treatments. The results showed that there were significant differences in the treatment with the addition of papaya leaf extract on the hatchability of tilapia eggs, with 4 mL/L treatment) being the best treatment in increasing the hatchability percentage of tilapia eggs by 88.33%. There is a tendency that the higher the papaya leaf extract, the egg hatchability decreases
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
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