1,720,955 research outputs found
Analisis Efisiensi Pengolahan Air Dengan Metode Elektrokoagulasi Ultrasonik Untuk Menguragi Kesadahan Pada Air
No full textAir bersih menjadi kebutuhan utama bagi manusia dalam menjalankan kegiatan sehari-hari. Permasalahan yang timbul yakni sering dijumpai bahwa kulaitas air tanah maupun air sungai yang digunakan masyarakat kurang memenuhi syarat sebagai air minum yang sehat bahkan di beberapa tempat bahkan tidak layak untuk diminum. Di daerah berkapur air akan bersifat sadah yaitu terdapat mineral berlebih yang terkandung didalamnya yang dapat menyebabkan bahaya bagi kesehatan. Untuk mengolah air tersebut secara konvensional maka akan ditambahkan bahan kimia di dalamnya, yang bahkan akan berbahaya jika dipakai secara terus-menerus. Berdasarkan hal itu dilakukanlah penelitian Analisis Efisiensi Metode Elektrokoagulai Ultrasonik Untuk Mengurangi Kadar Kesadahan Pada Air. Pada penelitian kali ini menggunakan plat elektroda berbahan aluminium dengan variasi jumlah plat 3 dan 5 pasang serta jarak antar elektroda sebesar 1 cm, 1,5 cm 2 cm. Pada penelitian ini melakukan perbandingan metode elektrokoagulasi dengan elektrokoagulasi ultrasonik. Diketahui bahwa nilai awal air yang akan di proses sebesar 442,87 mg/L hasil dari penelitian ini berupa perbandingan pengurangan kadar kesadahan. Didapatkan bahwa pada metode elektrokoagulasi pada konfigurasi 3 plat pada jarak 1cm, 1,5 cm, 2 cm berturut-turut adalah 38,7 %, 37% dan 29,8% pada konfigurasi 5 plat pada jarak 1 cm, 1,5 cm, 2 cm berturut turut adalah sebesar 37%, 48,3%, 41,9%. Pada metode elektrokoagulasi ultrasonik didapatkan hasil pada 3 pasang plat dengan variasi jarak 1 cm, 1,5 cm, 2 cm adalah 46,7%, 53,2%, 50%, dan pada 5 pasang plat didapatkan sebesar 56,4%, 62,9%, dan 59,6%. Dari data tersebut pada konfigurasi metode elektrokoagulasi ultrasonik dengan variasi 5 pasang plat dan pada jarak 1,5 cm menghasilkan pengurangan kadar kesadahan paling besar yaitu sebesar 62,9%. ====================================================================================================================================
Clean water is the main requirement for humans in carrying out their daily activities. The problem that arises is that it is often found that the quality of groundwater and river water used by the community does not meet the requirements as healthy drinking water, even in some places it is not even suitable for drinking. In calcareous areas the water will be hard, that is, there are excess minerals contained in it that can cause harm to health. To treat the water conventionally, chemicals will be added to it, which will even be dangerous if used continuously. Based on this, a study was conducted to analyze the efficiency of the ultrasonic electrocoagulation method to reduce hardness levels in water. In this study, we used aluminum electrode plates with variations in the number of plates of 3 and 5 pairs and the distance between electrodes of 1 cm, 1.5 cm and 2 cm. This study compares the electrocoagulation method with ultrasonic electrocoagulation. It is known that the initial value of water to be processed is 442.87 mg/L. The result of this study is a comparison of the reduction of hardness levels. It was found that in the electrocoagulation method in the configuration of 3 plates at a distance of 1 cm, 1.5 cm, 2 cm respectively were 38.7%, 37% and 29.8% in the configuration of 5 plates at a distance of 1 cm, 1.5 cm, 2cm respectively were 37%, 48.3%, 41.9%. In the ultrasonic electrocoagulation method, the results obtained in 3 pairs of plates with a distance variation of 1 cm, 1.5 cm, 2 cm are 46.7%, 53.2%, 50%, and in 5 pairs of plates obtained by 56.4%, 62.9%, and 59.6%. From these data, the configuration of the ultrasonic electrocoagulation method with a variation of 5 pairs of plates and at a distance of 1.5 cm resulted in the greatest reduction in hardness levels, namely 62.9%
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
Finvoks : Aplikasi Pengelolaan Keuangan Sebagai Upaya Pengembangan Financial Technology Dan Peningkatan Literasi Keuangan Pada Mahasiswa Fakultas Vokasi Program Studi Keuangan Dan Perbankan
Get PDFPenelitian ini bertujuan untuk menganalisis efektivitas aplikasi keuangan FINVOKS (Financial Vokasi) dalam meredam gaya hidup konsumtif di kalangan mahasiswa Fakultas Vokasi Keuangan dan Perbankan Universitas Brawijaya angkatan 2021. Dengan metode penelitian kuantitatif dan kuesioner sebagai alat pengumpul data, penelitian ini mengungkapkan sejauh mana aplikasi keuangan dapat bertindak sebagai alat pencegah terhadap perilaku konsumtif. Hasil dari penelitian ini menonjolkan skor keefektivitasan aplikasi sebesar 83,36%, yang mengindikasikan tingkat kelayakan yang sangat tinggi untuk penggunaan dalam konteks yang diteliti. Meskipun ditemukan nilai rendah pada instrumen penilaian robustness, hal ini tidak mengurangi kelayakan aplikasi FINVOKS sebagai sarana efektif dalam pencegahan gaya hidup konsumtif mahasiswa. Kesimpulannya, aplikasi FINVOKS berpotensi sebagai alat bantu edukatif dan preventif dalam mengelola keuangan pribadi dan mengurangi perilaku konsumtif di kalangan mahasiswa Fakultas Vokasi Keuangan dan Perbankan
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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