87 research outputs found

    Experimental study of the operating characteristics of premixing-prevaporizing fuel/air mixing passages

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    Fuel spray and air flow characteristics were determined using nonintrusive (optical) measurement techniques in a fuel preparation duct. A very detailed data set was obtained at high pressures (to 10 atm) and temperatures (to 750 K). The data will be used to calibrate an analytical model which will facilitate the design of a lean premixed prevaporized combustor. This combustor has potential for achieving low pollutant emissions and low levels of flame radiation and pattern factors conductive to improved durability and performance for a variety of fuels

    Fuel spray data with LDV

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    Droplet size and two component velocities in the severe environment of an operating gas turbine combustor system can be measured simultaneously using the solar laser morphokinetomer (SLM) which incorporates the following capabilities: (1) measurement of a true two-dimensional velocity vector with a range of + or - (0.01-200 m/sec); (2) measurement of particle size (range 5 to 300 micron m) simultaneously with the measurement of velocity; (3) specification of probe volume position coordinates with a high degree of accuracy (+ or - 0.5 mm); (4) immediate on-line data checks; and (5) rapid computer storage of acquired data. The optical system of the SLM incorporates an ultrasonic beam splitter to allow the measurement of a two-dimensional velocity vector simultaneously with particle size. A microprocessor with a limited storage capability permits immediate analysis of test data in the test cell

    Radiation pyrometer for gas turbine blades

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    A turbine blade temperature measuring system for liquid oxygen turbopumps is reported. The system includes a three mode, two-input optical signal processor, interconnecting cable, and four sensor heads. Two of the heads are aperture type, while the other two are lens type. This system is applicable to a temperature range of 1400 to 2200 F

    Perkembangan Gerakan Earth Hour sebagai Bentuk Pencegahan Perubahan Iklim Dunia Tahun 2007-2015

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    ABSTRACTThis research aims to analyze the development of the Earth Hour, which started in 2007, in Sidney, Australia. The Earth Hour, initiated by WWF, is a movement that works by encouraging people to turn off the light for an hour in the last week of March. Other than that, the Earth Hour has also managed to initiate other solutions for various climate change issues. This research look into the Earth Hour movement based on the standpoint of the recipient and the messenger. The recipient standpoint is being analyzed through the Convergence Theory, where the focus is the people, who joins the organizations based on their similarities in vision and mission statements and how they influence the national policy, from six sample countries. The messenger is WWF that works through the five strategies of mobilizing the global civil society, which are as follows, networking, lobbying, visibility, framing, and swarming.Keywords: strategy, convergence theory, earth hour movemen

    The ‘gal pal epidemic’

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    peerreview_statement: The publishing and review policy for this title is described in its Aims & Scope. aims_and_scope_url: http://www.tandfonline.com/action/journalInformation?show=aimsScope&journalCode=rcel20peerreview_statement: The publishing and review policy for this title is described in its Aims & Scope. aims_and_scope_url: http://www.tandfonline.com/action/journalInformation?show=aimsScope&journalCode=rcel2

    Comics, graphic narratives, and lesbian lives

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    Lesbian comics and graphic narratives have gained unprecedented cultural presence in the twenty-first century. Yet despite the surge in interest in the work of artists such as Alison Bechdel, and despite the existence of a substantial online archive about lesbian comics created by artists, readers, and collectors, relatively little critical attention has been directed to this work. The chapter begins to fill this gap. Taking the Bechdel’s work as its start-and-end point, it provides an overview of major developments in lesbian comics and contextualises them including in relation to the gendered conditions of possibility that define comics culture

    Smart Trik JQuery Without Plugin

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    VIII, 248 hlm.; 21 C

    ANALISIS TERJADINYA KEGAGALAN START PADA MESIN DIESEL GENERATOR NO. 2 DI KAPAL MT. FALCON 19

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    ABSTRAKSI Rohy, Marcelino. NIT. 572011217611 T, 2024, “Analisis Terjadinya Kegaglan Start Pada Mesin Diesel Generator No. 2 Di Kapal MT. Falcon 19”, Skripsi. Program Diploma IV, Program Studi Teknika, Politeknik Ilmu Pelayaran Semarang, Pembimbing I: Dr. Ali Muktar Sitompul, M.T., M.Mar.E., Pembimbing II: Mohammad Sapta H, S.Kom., M.Si. Motor diesel adalah mesin pembakaran dalam yang merubah energi panas menjadi energi mekanik, dimana energi panas diperoleh dari proses pembakaran dalam ruang bakar motor diesel melalui proses kompresi udara dan pengabutan bahan bakar diesel yang menggerakan torak selanjutnya memutar poros engkol. Di kapal MT. Falcon 19 terdapat 2 mesin diesel generator yang digunakan secara bergantian selama 2 hari sekali. Pada tanggal 6 April 2023 pukul 13.00 kapal sedang berlabuh di anchorage area pelabuhan Wayame Ambon saat akan dilakukan proses change over generator nomor 1 ke generator nomor 2 ternyata mesin diesel generator nomor 2 mengalami gagal start saat sudah dicoba berulang kali. Hal ini membuat udara di dalam tabung angin menjadi habis sehingga proses start mesin diesel generator dinyatakan gagal atau bermasalah. Tujuan dari penelitian ini adalah untuk mengetahui faktor penyebab, dampak dari kegagalan start mesin diesel generator, serta upaya yang dapat dilakukan untuk mengatasi masalah tersebut. Penelitian ini menggunakan metode deskriptif kualitatif, dengan teknik analisis data RCA (Root Cause Analysis) 5 why guna memperoleh hasil akar penyebab dari penelitian yang dilakukan. Penelitian ini menunjukkan bahwa kegagalan start mesin diesel generator disebabkan oleh keretakan pada exhaust manifold dan keretakan pada cylinder head mesin. Kegagalan start dapat berdampak pada kebocoran air pendingin pada exhaust manifold adalah menyebabkan terdapatnya air pada ruang bakar mesin. Sehingga tekanan kompresi menjadi rendah yang juga dapat menyebabkan rendahnya temperatur di dalam ruang bakar mesin. Dampak keretakkan pada cylinder head mesin menyebabkan terjadinya kebocoran pada jacket cooling cylinder head yang masuk dan memenuhi ruang bakar mesin, sehingga tekanan kompresi menjadi rendah dan menyebabkan temperatur pada ruang bakar mesin menjadi terlalu rendah. Upaya yang dapat dilakukan adalah penggantian exhaust manifold mesin dengan yang baru dan penggantian cylinder head mesin dengan hasil rekondisi

    Hemingway, Literalism, and Transgender Reading

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    Thematic study of transgender and gender identities in The Garden of Eden, addressing the difference between literal and figurative readings and the role of literalism. Rohy surveys transphobic responses by biographers and critics to the author’s male femininity and closes with an analysis of Hemingway’s discussion of his own femininity in passages from Mary’s safari diary

    A Darker Past in \u3cem\u3eThe Garden of Eden\u3c/em\u3e

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    Focuses on the temporal dimension, connecting sexuality, race, and primitivism. Rohy relies on queer and psychoanalytic theories as she explores both Catherine’s fantasies and David’s story, paying specific attention to the bond of oedipal fathers and sons and men’s relationships with one another. Rohy concludes, “In The Garden of Eden, which turns back in time to remedy time’s backward turn, we encounter the queer substrate beneath the developmental narrative of heteronormative masculinity.
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