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Department of Chemical Engineering, Indian Institute of Science, Bangalore 560 012, India (Received 17 June 1998 and in revised form 25 October 1999) The stability of ﬂuid ﬂow in a ﬂexible tube to non-axisymmetric perturbations is analysed in this paper. In the ﬁrst part of the paper, the equivalents of classical theorems of hydrodynamic stability are derived for inviscid ﬂow in a ﬂexible tube subjected to arbitrary non-axisymmetric disturbances. Perturbations of the form vi = ˜i exp [ik(x − ct) + inθ] are imposed on a steady axisymmetric mean ﬂow U(r) in v a ﬂexible tube, and the stability of mean ﬂow velocity proﬁles and bounds for the phase velocity of the unstable modes are determined for arbitrary values of azimuthal wavenumber n. Here r, θ and x are respectively the radial, azimuthal and axial coordinates, and k and c are the axial wavenumber and phase velocity of disturbances. The ﬂexible wall is represented by a standard constitutive relation which contains inertial, elastic and dissipative terms. The general results indicate that the ﬂuid ﬂow in a ﬂexible tube is stable in the inviscid limit if the quantity UdG/dr > 0, and could be unstable for UdG/dr < 0, where G ≡ rU /(n2 + k 2 r2 ). For the case of Hagen–Poiseuille ﬂow, the general result implies that the ﬂow is stable to axisymmetric disturbances (n = 0), but could be unstable to non-axisymmetric disturbances with any non-zero azimuthal wavenumber (n = 0). This is in marked contrast to plane parallel ﬂows where two-dimensional disturbances are always more unstable than three-dimensional ones (Squire theorem).
Power Brake Booster, Replacing Power Brake Booster, Replacing Preparation Disconnect the battery lead Removal Preparations for removing the power brake booster Switch off the ignition. Remove the cross member. (On 5 cylinder engines): Remove the screws and nuts from the engine mounting. Lift out the cross member. Remove the air cleaner (ACL) housing. Remove the plastic cap and the cable holder. Remove the integrated relay/fusebox. Preparations for removing the ABS unit Clean the brake pipes terminals at the master cylinder and ABS unit. Place paper under the master cylinder to avoid brake fluid spillage. Remove all the brake pipes from the master cylinder and the ABS unit. Plug the master cylinder socket for the brake pipes. Remove the ABS unit and bracket from the side member The unit is secured with three screws. NOTE: Store the ABS unit in such a way that no dirt can get into the pipe couplings. Preparations for removing the master cylinder NOTE: On cars with 6-cylinder engines: Disconnect the connectors from the master cylinder. Mark up a connector. Disconnect the connectors on the power brake booster. NOTE: If the car has hydraulic clutch: Block the hose to the clutch cylinder. Use hose pliers. Remove the master cylinder Avoid brake fluid spillage when removing. NOTE: Ensure that the gasket between the power brake booster and the master cylinder stays in place on the master cylinder. Remove the soundproofing panel and the power brake booster Transfer the components to the new power brake booster Transfer: ...
So you want to go wheel to wheel racing! SCCA is the best way to do it and Cal Club is one of SCCA’s best regions. We offer a variety of tracks and car classes. Our competition license schools are held every March at Buttonwillow Raceway Park. If you have racing experience you may be able to get a waiver for the school requirements. The License Waiver Checklist will lead you through that process. The License waiver form can be found on our web site under Road Racing, SCCA license, If you do not qualify for a waiver here is what you will need to do: The successful completion of the driver school requirements is a pre-requisite to getting an SCCA Competition license. It can be a bit confusing and we hope the explanations below will help you through the process, but always feel free to contact the office at 661-304-9382 or email@example.com. 1. You must be a member of SCCA. Membership forms can be found on our web site under Road Racing, SCCA License 2. You must apply for a Novice Permit (Form can be found on our web site under Road Racing, SCCA license) from SCCA. You will need to have a medical exam (forms can be found on our web site under Road Racing, SCCA License) allow yourself plenty of time to apply for the Novice permit, it will take SCCA about 3 weeks to process the paperwork. Make sure that you send in the Novice Permit Application, the Medical forms (completely filled out) and payment for the Novice Permit of $110. When you send in all the paper work to SCCA in Topeka make sure to keep COPIES of everything! After sending in the required paperwork you will receive your permit and a GCR (General Competition Rules) book in the mail from the Topeka office of SCCA. Bring all that to Registration at the track the day of the school.
It is a never-ending theme for motorcycle and automobile manufacturers, for whom the Machine Tool Division of Mitsubishi Heavy Industries, Ltd. (MHI) manufactures and delivers gear cutting machines, gear grinding machines and precision cutting tools, to strive for high precision, low cost transmission gears. This paper reports the recent trends in the automobile industry while describing how MHI has been dealing with their needs as a manufacturer of the machines and cutting tools for gear production. process before heat treatment. A gear shaping machine, however, processes workpieces such as stepped gears and internal gears that a gear hobbing machine is unable to process. Since they employ a generating process by a specific number of cutting edges, several tens of microns of tool marks remain on the gear flanks, which in turn causes vibration and noise. To cope with this issue, a gear shaving process improves the gear flank roughness and finishes the gear tooth profile to a precision of microns while anticipating how the heat treatment will strain the tooth profile and tooth trace. After heat treatment, it was usual only to finish the portion of the gear that accommodates a bearing.
Doc. Name: SBMPTN2013BIO999 Doc. Version : 2013-10 | 01. Contoh keberadaan satwa pada suatu habitat yang dijaga dengan baik sebagai upaya pelestarian ex situ adalah… (A) Orang utan di hutan Kalimantan. (B) Cendrawasih di hutan Papua. (C) Rusa di Kebun Raya Bogor. (D) Pesut diSungai Mahakam. (E) Anoa di Pulau Sulawesi 02. Komunitas mikroba yang melekat pada suatu substrat/benda sehingga dapat merusak substrat/benda tersebut disebut… (A) Biodegradator. (B) Bioaktivator. (C) Biokatalis. (D) Biodeposit. (E) Biofilm. 03. Bagian sistem pencernaan yang berperan dalam memecah polipeptida menjadi oligopeptida adalah… (A) Duodenum. (B) Usus besar. (C) Lambung. (D) Jejunum. (E) Ileum. 04. Asam absisat melindungi tanaman yang mengalami kekurangan air melalui mekanisme… (A) Peningkatan pembentukan kutikula. (B) Penurunan tekanan turgor sel penjaga. (C) Peningkatan kecepatan pembelahan sel. (D) Penurunan kecepatan pembentangan sel. (E) Penghambatan pemanjangan sel epidermis. halaman 1 05. Pernyataan yang salah mengenai fotofosforilisasi siklik dan non siklik adalah… (A) Pada fotofosforilisasi non siklik sumber elektron yang memasuki Fotosistem II adalah molekul air, pada fotofosforilisasi siklik, sumber dari elektron adalah Fotosistem I. (B) Pada fotofosforilisasi non siklik penerima elktron terakhir adalah NADP, pada fotofosforilisasi siklik, penerima elektron terakhir adalah Fotosistem I. (C) Hasil dari fotofosforilisasi non siklik adalah ATP, NADPH, dan O2, sedangkan hasil dari fotofosforilisasi siklikhanya ATP. (D) Fotofosforilisasi non siklik melibatkan Fotosistem I dan II, fotofosforilisasi siklik hanya melibatkan Fotosistem II. 06. Perhatikan diagram saluran kreb berikut! Tahap dimana berlangsung hidrasi adalah (A) 1 dan 4 (B) 1 dan 5 (C) 2 dan 6 (D) 3 dan 7 (E) 3 dan 8 Kunci dan pembahasan soal ini bisa dilihat di www.zenius.net dengan memasukkan kode 3117 ke menu search. Copyright © 2013 Zenius Education SBMPTN 2013 Biologi, Kode Soal doc. name: SBMPTN2013BIO999 halaman 2 doc. version : 2013-10 | 07. Perhatikan gambar tahapan mitosis berikut! 10. Grafik berikut menunjukan kinerja insulin sintetis. Tahap telofase, metaphase, anaphase dan profasen ditunjukan oleh urutan angka…
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The Michigan Competitive Scholarship program is available to undergraduate students pursuing their first degree at an approved Michigan postsecondary institution. Students must demonstrate both financial need and merit and eligible applicants must achieve a qualifying ACT score prior to entering college. Application Applicants must file the Free Application for Federal Student Aid (FAFSA). Students whose FAFSA is received by March 1 will receive priority consideration. Students are encouraged to file their FAFSA on the Web at www.fafsa.gov. Paper forms are available from the Federal Student Aid Information Center by calling 1-800-4FED-AID or a printable version can be accessed on the www.federalstudentaid.ed.gov Web site. The FAFSA allows students to list multiple colleges when filing. Because Student Scholarships and Grants (SSG) does not know which college the student will select, the award is based on the first college listed. Students must file a renewal FAFSA every year to determine possible continued program eligibility. The student is responsible for notifying SSG of a change of address or college choice. Program Limits Awards are restricted to tuition and mandatory fees. Awards may pay a maximum of $630 per academic year at a Michigan public college or university or $1,524 per academic year at a Michigan independent college or university1. Program eligibility ends when a student has received a baccalaureate degree, after completing the equivalent of ten (10) semesters or 15 terms, or when a student has been out of high school over ten years, whichever occurs first. Future awards are subject to available and approved funding.
Adjustable Speed Drives As Applied To Centrifugal Pumps Application Solution Foreword This article is a revised edition of the original D-7108 application waste energy, and generally cause the pump to operate at note as written by Dennis P. Connors, John D. Robechek, and reduced efficiencies. Dennis A. Jarc. The overall content and principles of this 1982 publication are still very much valid and relevant today. The significant changes that have occurred since this article was originally published is in AC technology. The dominant method of AC control is by PWM inverters, particularly with the advent of the high speed Insulated Gate Bipolar Transistors (IGBTs). This will be the only drives technology to be considered in this revisited analysis. Adjustable speed drives (ASDs) can achieve reduced flow by providing adjustable speed pump operation. This results in reduced system pressure and operation near the pump's Best Efficiency Point (BEP). In addition, maintenance costs might be reduced. This paper will discuss the energy savings potential of AC ASDs followed by a brief description of the operation and relative benefits of PWM AC drives.
Over the past several years, reliability has become an ever-increasingly important topic and component in the organizational continuous improvement tool box. Higher plant reliability reduces process and equipment failures costs as failure disruption decreases production output which in turn limits gross margin. Additionally, equipment failures also increase the probability of having a catastrophic environmental accident and the potential for increasing safety related accidents. The strong competitive environment between companies to secure business and the current world financial crisis are forcing organizations to explore ways to reduce operating costs. A popular approach to reduce operating costs is to reduce expenditures on equipment maintenance. While results can be obtained by reducing investments in equipment, this approach is very short sighted. It is not unusual that deferred investments will re-surface and cost 2 to 5 times more than if addressed in the early stages of failure development. The purpose of this paper is to objectively demonstrate that an approach focused on reliability, availability and maintainability prediction will help to detect pieces, equipments and systems that require improvements helping to maintenance managers to make the right decision analyzing a centrifugal pump system in a gas plant.