17,834 research outputs found
PERBEDAAN PERFORMA SEPEDA MOTOR MATIC 150 CC MENGGUNAKAN COOLING FAN STANDARD DAN COOLING FAN VARIASI
No full textMiko Rifaldi Maulana (2024), ”Perbedaan Performa Sepeda Motor Matic 150 cc
Menggunakan Cooling fan Standard dan Cooling fan Variasi” Pembimbing Febrian
Arif Budiman, S.Pd., M.Pd. Pendidikan Teknik Otomotif.
Meningkatnya penggunaan sepeda motor sebagai sarana mobilitas sehari-
hari, masyarakat menuntut untuk memastikan kinerja mesin tetap optimal.
Penggunaan sepeda motor untuk kebutuhan mobilitas masyarakat dalam sehari-hari
dapat mengakibatkan penurunan performa mesin sepeda motor. Memodifikasi
komponen ataupun mesin sepeda motor merupakan salah satu cara untuk
meningkatkan performa mesin. Penelitian ini bertujuan untuk mengetahui
perbedaan performa sepeda motor matic 150 cc menggunakan cooling fan standard
dan cooling fan variasi. Penelitian ini merupakan penelitian true eksperimen dengan
menggunakan analisis deskriptif. Hasil penelitian nilai torsi rata-rata maksimal
menggunakan cooling fan standar sebesar 10,64 Nm pada putaran 4500 rpm,
cooling fan SRP Product Racing menghasilkan nilai torsi maksimal sebesar 11,18
Nm pada putaran 4500 rpm, dan cooling fan TDR Racing menghasilkan nilai torsi
maksimal sebesar 10,28 Nm pada putaran 4500 rpm. Dari ketiga cooling fan
mengalami kenaikan rata-rata nilai torsi sebesar 6%. Hasil penelitian nilai daya
maksimal menggunakan cooling fan standard menghasilkan nilai daya maksimal
sebesar 7,40 kW pada putaran 7500 rpm, cooling fan SRP Product Racing
menghasilkan nilai daya maksimal sebesar 7,63 kW pada putaran 7500 rpm, dan
cooling fan TDR Racing menghasilkan nilai torsi maksimal sebesar 7,40 kW pada
putaran 7500 rpm. Dari ketiga cooling fan mengalami kenaikan rata-rata nilai daya
rata-rata sebesar 2%. Cooling fan dengan rata – rata nilai laju perpindahan panas
terendah cooling fan TDR Racing sebesar 1124,04 Watt, lalu nilai laju perpindahan
panas cooling fan standard sebesar 1156,80 Watt dan cooling fan dengan nilai laju
tertinggi adalah cooling fan SRP Product Racing sebesar 1190,10 Watt.
Berdasarkan hasil diatas cooling fan SRP Product Racing menghasilkan torsi dan
daya yang lebih besar daripada cooling fan standard dan cooling fan TDR Racing
dan juga cooling fan SRP Product Racing memiliki nilai perpindahan panas yang
tertinggi. Hal ini membuatnya unggul dalam menjaga suhu mesin tetap stabil,
Dengan sudut sudu yang lebih besar, cooling fan SRP Product Racing memastikan
aliran udara optimal untuk pendinginan yang lebih efisien, sehingga mencegah
mesin dari overheating dan memperpanjang usia komponen.
Kata kunci: Performa mesin, Cooling fan, Perpindahan Panas, Torsi, Day
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
Experimental ocular toxocariasis in mice infected with long-term-maintained embryonated eggs of Toxocara canis.
No full textBlood-aqueous barrier function in a patient with combined hamartomas of the retina and retinal pigment epithelium
No full textEnhanced expression of transforming growth factor-beta 1 in inflammatory cells and secretory granules in Paneth cells in the small intestine of mice infected with Toxocara canis.
No full textEnhanced inducible nitric oxide synthase expression and nitrotyrosine accumulation in experimental granulomatous hepatitis caused by Toxocara canis in mice.
No full textLarval migratory behavior of long-term-maintained Toxocara canis embryonatedeggs in mice.
No full textSeroepidemiology of Toxocara canis infection among mountain aboriginal schoolchildren living in contaminated districts in eastern Taiwan.
No full textImproving interoperability in distributed and physical union catalogues through co-ordination of cataloguing and indexing policies : report for work package B of the JISC CC-interop project
No full textThis report addresses section 7.2.4 (Guidelines and Strategy for Cataloguing and Indexing Standards) of the CC-interop project plan and fulfills deliverable B3 of work
package B
Experimental Investigation of a Morphing Nacelle Ducted Fan
No full textThe application of Circulation Control to the nacelle of a shrouded fan is proposed as a means to enhance off-design performance of the shrouded fan. Typically, a fixed geometry shroud is efficient at a single operating condition. Modifying circulation about the fixed geometry is proposed as a means to virtually morph the shroud without moving surfaces. This approach will enhance off-design-point performance with minimal complexity, weight, and cost. Termed the Morphing Nacelle, this concept provides an attractive propulsion option for Vertical Take-off and Landing (VTOL) aircraft, such conceptual Personal Air Vehicle (PAV) configurations proposed by NASA. An experimental proof of concept investigation of the Morphing Nacelle is detailed in this paper. A powered model shrouded fan model was constructed with Circulation Control (CC) devices integrated in the inlet and exit of the nacelle. Both CC devices consisted of an annular jet slot directing a jet sheet tangent to a curved surface, generally described as a Coanda surface. The model shroud was tailored for axial flight, with a diffusing inlet, but was operated off-design condition as a static lifting fan. Thrust stand experiments were conducted to determine if the CC devices could effectively improve off-design performance of the shrouded fan. Additional tests were conducted to explore the effectiveness of the CC devices a means to reduce peak static pressure on the ground below a lifting fan. Experimental results showed that off-design static thrust performance of the model was improved when the CC devices were employed under certain conditions. The exhaust CC device alone, while effective in diffusing the fan exhaust and improving weight flow into shroud inlet, tended to diminish performance of the fan with increased CC jet momentum. The inlet CC device was effective at reattaching a normally stalled inlet flow condition, proving an effective means of enhancing performance. A more dramatic improvement in static thrust was obtained when the inlet and exit CC devices were operated in unison, but only over a limited range of CC jet momentum. Operating the nacelle inlet and exit CC devices together proved very effective in reducing peak ground plane static pressure, while maintaining static thrust. The Morphing Nacelle concept proved effective at enhancing off-design performance of the model; however, additional investigation is necessary to generalize the results
- …
