1,721,253 research outputs found
ANALISA PENGARUH PENGGUNAAN NACA 9410 PADA SUDU TURBIN AIR VORTEX TENAGA PICOHIDRO TERHADAP TINGGI JATUH AIR DAN PENYEMPITAN ALIRAN AIR
No full textANALYSIS OF THE EFFECT OF NACA 9410 USE ON VORTEX AIR
TURBINE ANGLE PICOHIDRO POWER ON WATER FALLS AND
WATER FLOW DISPOSAL
Muhammad Jafar
Jurusan Teknik Mesin S-1, FTI Institut Teknologi Nasional Malang
JL. Raya Karanglo KM. 2, Tasikmadu, Kec. Lowokwaru, Kota Malang, Jawa
Timur 65153
(0341) 417636
Email: [email protected]
ABSTRACT
Energy electricity is energy the required primary for equipment electricity
/ energy stored in current electricity with unit amperage (A) and voltage electricity
with unit volt (V) with provisions needs consumption power electricity with units
of Watt (W) for move motorbike , lights lighting , heating , cooling or move back
something equipment mechanic for produce form other energy . Generator
Electricity Power Piko Hydro is something plant could produce energy electricity
less from 5 kW and could classified as generator electricity scale small. On
research that will held this type water turbine that will digunkana n Generator
electricity power micro hydro (PLTPH) is type turbine reaction that is Vortex
water turbine . P there is a Vortex water turbine , Testing done in the laboratory
fluid Department Technique Machine Institute Technology National Malang, use
blade NACA 9410. Testing menggu nakan v Variations high falling water head
(H) 10 cm, 20 cm, 30 cm, 40 cm and 50 cm. and corner constriction water flow 20
, 40 , and 60 . Pengu also uses NACA 9410 blade, number of blades 4 pieces,
blade length 10 cm, and blade height 30 cm . Results testing obtained that is
variation high falling water (head) and corner blade director influence results
round shaft , power and efficiency turbine . On testing this obtained results highest
on height falling water 50 cm with corner constriction 20 ° flow with results round
shaft 3 2.71 rpm, power turbine at 40, 01 watts, and value efficiency turbine
amounting to 22. 01 %.
Keywords: Vortex water turbine , Picohidro , NACA 9410 .
ANALISA PENGARUH PENGGUNAAN NACA 9410 PADA SUDU
TURBIN AIR VORTEX TENAGA PICOHIDRO TERHADAP TINGGI
JATUH AIR DAN PENYEMPITAN ALIRAN AIR
Muhammad Jafar
Jurusan Teknik Mesin S-1, FTI Institut Teknologi Nasional Malang
JL. Raya Karanglo KM. 2, Tasikmadu, Kec. Lowokwaru, Kota Malang, Jawa
Timur 65153
(0341) 417636
Email: [email protected]
ABSTRAK
Energi listrik adalah energi utama yang dibutuhkan bagi peralatan
listrik/energi yang tersimpan dalam arus listrik dengan satuan amper (A) dan
tegangan listrik dengan satuan volt (V) dengan ketentuan kebutuhan konsumsi daya
listrik dengan satuan Watt (W) untuk menggerakkan motor, lampu penerangan,
memanaskan, mendinginkan atau menggerakkan kembali suatu peralatan mekanik
untuk menghasilkan bentuk energi yang lain. Pembangkit Listrik Tenaga Piko Hidro
adalah suatu pembangkit yang dapat menghasilkan energi listrik kurang dari 5 kW
dan dapat diklasifikasikan sebagai pembangkit listrik berskala kecil. Pada penelitian
yang akan dilaksanakan ini jenis turbin air yang akan digunkanan Pembangkit listrik
tenaga mikro hidro (PLTPH) adalah jenis turbin reaksi yaitu Turbin air Vortex. Pada
pembuatan turbin air Vortex, Pengujian dilakukan di labaratorium fluida Jurusan
Teknik Mesin Institut Teknologi Nasional Malang, menggunakan sudu NACA 9410.
Pengujian menggunakan variasi tinggi jatuh air head (H) 10 cm, 20 cm, 30 cm, 40
cm, dan 50 cm. dan sudut penyempitan aliran air 20, 40, dan 60. Pengujian
menggunakan sudu NACA 9410, jumlah sudu 4 buah, panjang sudu 10 cm, dan
tinggi sudu 30 cm. Hasil pengujian yang didapat yaitu variasi tinggi jatuh air (head)
dan sudut sudu pengarah mempengaruhi hasil putaran poros, daya dan efisiensi
turbin. Pada pengujian ini didapatkan hasil tertinggi pada ketinggian jatuh air 50 cm
dengan sudut penyempitan aliran 20° dengan hasil putaran poros 32,71 rpm, daya
turbin sebesar 40,01 watt, dan nilai efisiensi turbin sebesar 22.01 %.
Kata kunci : Turbin air vortex, Picohidro, NACA 9410
PREDICTORS OF POST STROKE DEPRESSION AMONG STROKE SURVIVORS
No full textDr. Muneeb Ur Rehman*, Dr. Musadiq Husain and Dr. Muhammad Jafar Awa
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
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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