:جديد المواضيع
صفحة 277 من 864 الأولىالأولى ... 177227267273274275276277278279280281287327377777 ... الأخيرةالأخيرة
النتائج 2,761 إلى 2,770 من 8639

طلبات الأوراق العلمية و الأبحاث ... Scientific papers Requests here

  1. #2761
    عضو

    User Info Menu

    السلام عليكم ورحمة الله وبركاته
    اسف على الرسالة السابقة فقد كانت غير منظمة وهذه هي الابحاث التي اريدها وارجو من الله ان تجدوها لي مع شكري لكم ودعائي لكم

    1. http://www.nasa.gov/centers/glenn/pdf/84790main_fs03grc.pdf

    2. NOISE-CON 87; Proceedings of the National Conference on Noise Control Engineering, State College, PA, June 8-10,
    1987 (A88-39701 16-71). Poughkeepsie,NY, Noise Control Foundation, 1987, p. 129-134.

    3. http://www.aerospaceweb.org/question/propulsion/q0033.shtml

    4. Bies, David A. and Hansen, Colin H., Engineering Noise Control Theory and Practice,(New York: E & FN SPON, 1998), pages 470-472.

    5. Tokhi, M. O. and Leitch, R. R., Active Noise Control, (Oxford: Clarendon Press;NewYork: Oxford University Press, 1992), pages 1-6.

    6. http://www.grc.nasa.gov/WWW/RT2002/5000/5530delaat.html.

    7. Harris, David A. (ed.), Noise Control Manual: Guidelines for Problem Solving in the Industrial / Commercial Acoustical Environment, (New York, Van Nostrand Reinhold, 1991), pages 10-13.

    8. Witton, J.J. and E. Noordally, "Porous Media Burners for Clean Engines", CombustionProcesses in Propulsion (Gabriel D. Roy, Ed.), Academic Press/Elsevier, 2005, pp. 139-144

    9. Ellzey, J.L., A.J. Barra, and G. Diepvens, "Simulations of a Porous Burner for a Gas Turbine", Combustion Processes in Propulsion (Gabriel D. Roy, Ed.), Academic Press/Elsevier, 2005,pp. 145-156

    10. Singh, S. and R.E. Peck, "An Innovative Method for Reducing Gaseous Emissions from Power Turbine Combustors", Advances in Chemical Propulsion (Gabriel D. Roy Ed.) CRC Press,
    2002, pp. 463-476

    11. Kinsler, L. E., Frey, A. R., Coppens, A. B., and Sanders, J. V., Fundamentals of Acoustics, (New York: John Wiley & Sons, 1999),. 4th edition.

    12. Selamet, A., Dickey, N. S., and Novak, J. M., “The Herschel-Quincke Tube: A Theoretical, Computational and Experimental Investigation”, Journal of Acoustical Society of America, Vol. 96, No. 5, pages 3177-3185, Nov., 1994.

    13- NASA Glen Research Center, “Making Future Commercial Aircraft Quieter”, 1999,
    http://www.grc.nasa.gov/WWW/PAO/PAIS/fs03grc.htm (2001).

    14- R. A. Mangiarotty, “The Reduction of Aircraft Engine Fan-Compressor Noise Using Acoustic Linings,” Journal of Sound and Vibration 18 (4) (1971): 565-576.

    15- M. Rim and Y. J. Kim, “Narrowband Noise Attenuation Characteristics of In-Duct Acoustic Screens,” Journal of Science and Vibration 234 (5) (2000): 737-759.

    16- R. H. Thomas, R. A. Burdisso. C. R. Fuller, and W. F. O’Brien, “Active Control of Fan Noise From a Turbofan Engine,” AIAA 93-0597 (1993).

    17- J. P. Smith and R. A. Burdisso, “Active Control of Inlet Noise From a Turbofan Engine Using Inlet Wavenumber Sensors,” CEAS/AIAA 99-1808 (1999).

    18- R. A. Burdisso, C. R. Fuller, and J. P. Smith, “Experiments of the Active Control of a Turbofan Inlet Noise using Compact, Lightweight Inlet Control and Error Transducers,” CEAS/AiAA 95-028, (1995): 177-185.

    19- J. F. W. Herschel, “On the Absorption of Light by Colored Media, viewed in connection with the Undulatory Theory,” Philosophical Magazine and Journal of Science. 3 (1833): 401-412.

    20- G. Quincke, “Ueber interferenzapparate für schallwellen,” Ann. Phys. Chem. 128 (1866): 177-192.

    21- G. W. Stewart, “The Theory of the Herschel-Quincke Tube,” Physical Review 31.4 (1928): 696-698.

    22- Selamet, P. M. Radavich, and N. S. Dickey, “Mult-Dimensional Effects On Silencer Performance,” Noise Control 94 (1994): 261-266.

    23- A. Selamet, N. S. Dickey, and J. M. Novak, “The Herschel-Quincke tube: a theoretical, computational,and experimental investigation,” J. Acoust. Soc. Am. 96 (5) (1994): 3177-3185.

    24- A. Selamet and P. M. Radavich, “Effect of Expansion Chamber on the Resonance Frequency of Side Branches and Herschel-Quincke Tubes,” ASME NCA 22 (1996): 127-132.

    25- A. Selamet and V. Easwaran, “Modified Herschel-Quincke tube: Attenuation and resonance for n-duct configurations,” Acoust. Soc. Am. 102.1 (1997): 164-169.

    26- C. R. Fuller and D. A. Bies, “The effects of flow on the performance of a reactive acoustic attenuator,” J. Sound Vib, 62 (1979): 73-92.

    27- A. J. Torregrosa, A. Broatch, and R. Payri, “A study of the influence of mean flow on the acoustic performance of Herschel-Quincke tubes,” J. Acoust. Soc. Am. 107 (4) (2000): 1874-1879.

    28- Z. Zhichi, L. Song, T. Rui, G. Rui, D. Genhua, and L. Peizi, Application of Quincke tubes to flow ducts as a sound attenuation device,” Noise Control Eng. J., 46 (6) (1998): 245-255.

    29- L. A. Brady, R. A. Burdisso, and J. P. Smith, “Investigation of the Herschel-Quincke Concept for the Suppression of Higher-order Modes in a Duct,” Proceedings of Internoise, 99 (1999): 545-550.

    30- R. F. Hallez, J. P. Smith, and R. A. Burdisso, “Control of Higher-Order Modes in Ducts using Arrays of Herschel-Quincke Waveguides,” ASME Control of Vibration and Noise (2000): 1-8.

    31- R. D. Stunk, “Silencer for Hydraulic Piston Pump Pressure Pulsations,” SAE Technical Paper Series, 911759, International Off-Highway & Powerplant Congress & Exposition (1991).

    32- C. C. Chen and M. C. Hastings, “Half-wavelength tuning cables for passive noise control in automotive power steering systems,” Act. Control Vib. Noise, ASME Proc. DE-75 (1994): 355-361.

    33- R. A. Burdisso and J. P. Smith, “Control of Inlet Noise from Turbofan Engines Using Herschel-Quincke Waveguides,” AIAA. 2000-1994.

    34- R F. Hallez, “Investigation of the Herschel-Quincke Tube Concept as a Noise Control Device for Turbofan Engines,’ Maters of Science Thesis, Virginia Tech, 2001.

    35- Tyler J. M. and Sofrin, T. G., “Axial Flow Compressor Noise Studies,” SAE Transaction no. 70, 309-332, (1962).

    36- Kantola, R.A., and Gliebe, P.R., “Effects of Vane/Blade Ratio and Spacing on Fan Noise,” AIAA Paper no. 81-2033, Oct. (1981).

    37- Dittmar, J. H. and Woodward, R. P., “An Evaluation of some Alternative
    Approaches for Reducing Fan Tone Noise,” NASA Technical Memorandum
    105356, February (1992).

    38- Mangiarotty, R. A., “The Reduction of Aircraft Engine Fan-Compressor Noise Using Acoustic Linings,” Journal of Sound and Vibration, 18 (4), 565-576, (1971).

    39- Thomas, R.H., R. A. Burdisso, C. R. Fuller and W. F. O’Brien, “Active Control of Fan Noise From a Turbofan Engine,” AIAA paper no. 93-0597, January (1993).

    40- Smith, J. P. and Burdisso, R. A., “Active Control of Inlet Noise From a Turbofan Engine Using Inlet Wavenumber Sensors,” CEAS/AIAA-99-1808, Seattle, WA, May (1999).

    41- Burdisso, R. A., Fuller, C. R. and Smith, J. P., “Experiments on the Active Control of a Turbofan Inlet Noise using Compact, Lightweight Inlet Control and Error Transducers,” CEAS/AIAA-95-028, pp. 177-185, (1995).

    42- Herschel, J. F. W. ,“On the absorption of light by coloured media, viewed in connexion with the undulatory theory,” Philosophical Magazine and Journal of Science, 3, 401-412, (1833).




    0 Not allowed!

  2. #2762
    جديد

    User Info Menu

    أحتاج هذه المقالات من فضلكم:
    Setting up shop: The business of open-source software .1
    Linux in the workplace .2
    The business case for Linux .3
    Linux and Open - Source Success .4
    مرتبينَ حسبَ أهميتهم بالنسبة إليَّ. وهم بالمناسبة كلهم من عددٍ واحدٍ من المجلة (IEEE).


    وشكراً مقدماً يا أصدقاء،
    مأمون.


    0 Not allowed!
    التعديل الأخير تم بواسطة مأمـون ; 2008-05-12 الساعة 03:31 PM

  3. #2763
    عضو

    User Info Menu

    السلام عليكم من فضلكم ابحث عن هده المقالات :
    T. A. BIRKS, J. C. KNIGHT, P. ST.J. RUSSELL: Endlessly single-mode photonic crystal fiber, Opt. Lett. 22, 961-963, 1997
    http://ol.osa.org/abstract.cfm?id=36213

    Macro-bending loss properties of photonic crystal fibre
    http://ieeexplore.ieee.org/xpl/freea...rnumber=911957

    M. D. NIELSEN, N. A. MORTENSEN, M. ALBERTSEN, J. R. FOLKENBERG, A. BJARKLEV, AND D. BONACINNI: Predicting macrobending loss for large-mode area photonic crystal fibers, Opt. Express 19, 1775-1779, 2004
    http://www.opticsexpress.org/abstrac...OPEX-12-8-1775

    وشكرا جزيلا


    0 Not allowed!

  4. #2764
    جديد

    User Info Menu

    السلام عليكم ورحمة الله وبركاته

    هل استطيع الحصول على هاتان الورقتان :
    http://ieeexplore.ieee.org/xpl/freea...rnumber=163756

    http://ieeexplore.ieee.org/xpl/freea...rnumber=400337

    بارك الّله في جهودكم


    0 Not allowed!

  5. #2765
    عضو

    User Info Menu

    السلام عليكم من فضلكم ابحث عن هده المقالة

    A new method for the determination of the thickness, the optical constants and the relaxation time of weakly absorbing semiconducting thin filmsInfrared Physics, Volume 26, Issue 6, November 1986, Pages 385-393D. B. Kushev, N. N. Zheleva, Y. Demakopoulou and, D. Siapkas-وشكرا جزيلا


    0 Not allowed!

  6. #2766
    عضو متميز

    User Info Menu

    السلام عليكم و رحمة الله و بركاته

    اسمحوا لي على الانقطاع اللاارادي و اليكم هاته المكتبة الرائعة جدا جدا حتى تحملوا ما تريدون.

    أرجوا ممن حمل ما يريد أن يكتب بأنه حمل الملفات و شكرا للاخوة.

    المكتبة في المرفقات. أرجوا التحميل بعقلانية و مساعدة الاخوة.

    السلام عليكم و رحمة الله و بركاته

    الملفات المرفقة الملفات المرفقة

    0 Not allowed!

  7. #2767
    عضو

    User Info Menu

    السلام عليكم اخي العزيز هل ممكن الحصول على هذا الكتاب و لك جزيل الشكر والتقدير على جهودك

    .NET Security and Cryptography (Integrated .NET Series from Object Innovations)


    0 Not allowed!

  8. #2768
    عضو

    User Info Menu

    ساعدوني في هذه البحوث

    السلام عليكم محتاج هذه البحوث


    Friedel, L. 1979. Improved friction pressure drop correlations for horizontal and vertical
    two-phase pipe flow. Europ. Two-phase Flow Group Meeting, Ispra, Paper E2.


    Cavallini, A. 2002. Condensation Heat Transfer and Energy Efficiency of Working
    Fluids in Mechanical Refrigeration. Bulletin of the IIR, Vol. 82, no. 6, pp. 4-21.




    Cavallini, A.; Censi, G.; Del Col, D. ; Doretti, L. ; Longo, G.A. and Rossetto, L. 2002.
    In tube condensation of halogenated refrigerants. ASHRAE Transactions, Vol.
    108, No. 1, #4507.


    0 Not allowed!

  9. #2769
    عضو

    User Info Menu

    two phase flow and heat transfer

    كل هذه البحوث موجودة على موقع
    www.sincedirect.com

    ولكن لم اقدر على تحميلها
    A. Cavallini, D. Del Col, G.A. Longo, L. Rossetto
    Condensation heat transfer with refrigerants, in: Proceedings
    of Two-Phase Flow Modelling and Experimentation
    Conference, ETS, Pisa, vol. 1, 1999, pp. 71–88.




    Cavallini, A.; Censi, G.; Del Col, D. ; Doretti, L. ; Longo, G.A. and Rossetto, L. 2002.
    In tube condensation of halogenated refrigerants. ASHRAE Transactions, Vol.
    108, No. 1, #4507.




    Cavallini, A. 2002. Condensation Heat Transfer and Energy Efficiency of Working
    Fluids in Mechanical Refrigeration. Bulletin of the IIR, Vol. 82, no. 6, pp. 4-21.








    Chisolm, D., 1983. Two-Phase flow in Pipelines and Heat Exchangers, Longman Inc.,
    New York.


    0 Not allowed!
    التعديل الأخير تم بواسطة علي السياب ; 2008-05-20 الساعة 12:33 PM

  10. #2770
    عضو

    User Info Menu

    احتاج هذه البحوث

    Chisolm, D., 1983. Two-Phase flow in Pipelines and Heat Exchangers, Longman Inc.,
    New York.


    Cavallini, A. 2002. Condensation Heat Transfer and Energy Efficiency of Working
    Fluids in Mechanical Refrigeration. Bulletin of the IIR, Vol. 82, no. 6, pp. 4-21.

    A. Cavallini, D. Del Col, G.A. Longo, L. Rossetto,
    Condensation heat transfer with refrigerants, in: Proceedings
    of Two-Phase Flow Modelling and Experimentation
    Conference, ETS, Pisa, vol. 1, 1999, pp. 71–88.


    Cavallini, A.; Censi, G.; Del Col, D. ; Doretti, L. ; Longo, G.A. and Rossetto, L. 2002.
    In tube condensation of halogenated refrigerants. ASHRAE Transactions, Vol.
    108, No. 1, #4507.


    Cavallini, A.; Censi, G.; Del Col, D. ; Doretti, L. ; Longo, G.A. ; Rossetto, L. 2001.
    Experimental investigation on condensation heat transfer and pressure drop of
    new HFC refrigerants (R134a, R125, R32, R410A, R236ea) in a horizontal
    smooth tube. Int. J. of Refrigeration, Vol. 24, pp. 73-87.


    0 Not allowed!

الكلمات الدلالية لهذا الموضوع

ضوابط المشاركة

  • لا تستطيع إضافة مواضيع جديدة
  • لا تستطيع الرد على المواضيع
  • لا تستطيع إرفاق ملفات
  • لا تستطيع تعديل مشاركاتك
  •