1,720,956 research outputs found
STUDI PENINGKATAN KADAR DISSOLVED OKSIGEN AIR, SETELAH DI INJEKSI DENGAN AERATOR KINCIR ANGIN SAVONIUS ARREUS, MENGGUNAKAN DO METER TYPE LUTRON DO-5510
No full textTeknologi budidaya perikanan makin maju, semakin meningkat padat tebar, makin besar pula kebutuhan Aerasi. Namun alat aerator relatif mahal, baik harga beli maupun biaya operasionalnya.Disisi lain, arus angin di daerah pesisir sangat besar. Merupakan potensi yang sangat besar untuk energi terbaharukan, maupun untuk aerasi. Tujuan penelitian ini adalah untuk mengetahui kinerja dari aerator savonius darreus untuk meningkatkan kadar Desolve Oksigen dalam air. Aerator savonius darreius telah dicoba mampu berputar mulai kecepatan angin 2,5 M/S. Aerator savonius darreeius diuji pada tiga tempat yang berbeda, yaitu diuji pada akuarium, pada kolam terbuka, dan pada tambak pembibitan ikan bandeng. Metode pengukuran Desolve Oksigen pada penelitian ini menggunakan DO Meter Type Lutron DO-5510. Pada percobaan dalam akuarium, aerator ssavonius darreius mampu meningkatkan kadar Desolve Oksigen sebesar 0,7 Mg/L3 dalam 50 menit percobaan di siang hari.Pada percobaan dalam kolam terbuka, aerator ssavonius darreius mampu meningkatkan kadar Desolve Oksigen sebesar 0,2 Mg/L3 dalam 50 menit percobaan di siang hari.Pada percobaan dalam tambak pembibitan ikan bandeng, aerator ssavonius darreius belum mampu meningkatkan kadar Desolve Oksigen</jats:p
Analisis Aliran Udara Dalam Ruangan Anyelir Rumah Sakit dr. Gunawan Mangunkusumo Menggunakan Computation Fluid Dynamics
Get PDFHospitals are places that are vulnerable to the spread of disease, especially through air flow. Good air flow in hospital rooms can help reduce the spread of disease. This study aims to analyze the air flow in the Carnation room at Dr. Hospital. Gunawan Mangunkusumo using the Computation Fluid Dynamics (CFD) method. Optimal air flow in hospital rooms is essential to ensure the comfort and health of patients and medical staff. CFD simulations were carried out using CFD software. The Carnation room geometry model was created based on dimensional data obtained from direct measurements. The simulation boundary conditions are determined according to actual conditions in the field. In this research, CFD simulations were carried out to model the distribution of air flow, temperature and contaminants in the room. The analysis results show that the existing ventilation system design is quite effective, but there are several areas that require improvement to optimize air circulation. The research results show that placing the AC above the Exhaust Fan causes air turbulence, while relocating the AC according to standards produces laminar air flow and increases air distribution efficiency. The air velocity in both designs (maximum 0.746978 m/s² and 0.746659 m/s²) meets the thermal comfort. In addition, the temperature and pressure in the isolation room remained stable in both designs, with a temperature of around 21°C and a minimum pressure of -15 Pa, indicating the effectiveness of the ventilation system in maintaining comfortable and safe environmental conditions for patients
Analisis Aliran Udara Dalam Ruangan Anyelir Rumah Sakit dr. Gunawan Mangunkusumo Menggunakan Computation Fluid Dynamics
Get PDFHospitals are places that are vulnerable to the spread of disease, especially through air flow. Good air flow in hospital rooms can help reduce the spread of disease. This study aims to analyze the air flow in the Carnation room at Dr. Hospital. Gunawan Mangunkusumo using the Computation Fluid Dynamics (CFD) method. Optimal air flow in hospital rooms is essential to ensure the comfort and health of patients and medical staff. CFD simulations were carried out using CFD software. The Carnation room geometry model was created based on dimensional data obtained from direct measurements. The simulation boundary conditions are determined according to actual conditions in the field. In this research, CFD simulations were carried out to model the distribution of air flow, temperature and contaminants in the room. The analysis results show that the existing ventilation system design is quite effective, but there are several areas that require improvement to optimize air circulation. The research results show that placing the AC above the Exhaust Fan causes air turbulence, while relocating the AC according to standards produces laminar air flow and increases air distribution efficiency. The air velocity in both designs (maximum 0.746978 m/s² and 0.746659 m/s²) meets the thermal comfort. In addition, the temperature and pressure in the isolation room remained stable in both designs, with a temperature of around 21°C and a minimum pressure of -15 Pa, indicating the effectiveness of the ventilation system in maintaining comfortable and safe environmental conditions for patients
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
Manajemen Pengolahan Sampah Plastik Bagi Guru Di SMKN 2 Kendal
Get PDFSampah plastik menjadi permasalahan yang dialami oleh berbagai negara karena berdampak negatif bagi lingkungan. Daur ulang merupakan suatu cara yang bertujuan untuk mengurangi penumpukan sampah dan menurunkan konsumsi bahan baku baru. Agar dapat didaur ulang, sampah plastik harus berbentuk cacahan. Mesin pencacah sangat dibutuhkan karena dapat mempersingkat waktu dan meningkatkan kapasitas pencacahan plastik. Kegiatan pengabdian dilakukan guna menindaklanjuti permohonan SMKN 2 Kendal mengenai system miniature manufacturing plastik. Dalam pengabdian ini telah diserahkan mesin pencacah plastik dan pelatihan berkaitan dengan mesin tersebut. Diharapkan dengan adanya mesin pencacah plastik dapat meningkatkan kompetensi pendidik dan kualitas pembelajaran siswa mengenai system miniature manufacturing plasti
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