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| 1 | Counter Rotating Fans- An Aircraft Propulsion for the Future?显示文摘In the mid seventies a new propulsor for aircraft was designed and investigated-the so-called PROPFAN.With regard to the total pressure increase,it ranges between a conventional propeller and a turbofan with very high bypass ratio.This new propulsion system promised a reduction in fuel consumption of 15 to 25% compared to engines at that time.A lot of propfans (Hamilton Standard,USA) with different numbers of blades and blade shapes have been designed and tested in wind tunnels in order to find an opimum in efficiency,Fig.1.Parallel to this development GE,USA,made a design of a counter rotating unducted propfan,the so-called UDF,Fig.2.A prototype engine was manufactured and investigated on an in-flight test bed mounted at the MD82 and the B727.Since that time there has not been any further development of propfans (except AN 70 with NK 90-engine Ukraine,which is more or less a propeller design)due to relatively low fuel prices and technical obstacles.Only technical programs in diferent countries are still going on in order to prepare a data base for designing counter rotating fans in terms of aeroacoustics,aerodynamics and aeroelasticities.In DLR.Germany,a lot of experimental and numerical work has been undertaken to understand the physical behaviour of the unsteady flow in a counter rotating fan. | Peter Schimming | 2003 | Journal of Thermal Science2003，12，2： | 3 |
| 2 | The value of coronal computer tomograms in fractures of the mandibular condylar process显示文摘 | Schimming R Eckeh U Kittner T | 1999 | Oral Surg Oral Med Oral Pathol Oral Radiol Endod1999，87，5： | 1 |
| 3 | Evaluation of a new rapid diagnostic kit(FemExam)for bacterial vaginosis in patients with vaginal discharge syndrome in The Gambia显示文摘 | West B Morison L Schim van der Loeff M | | 0，，06： | 1 |
| 4 | A three-dimensional model of cultural congruence: A framework for intervention 显示文摘 | Schim SM Doorenbos AZ | 2010 | J Soc Work End Life Palliat Care2010，6，34： | 1 |
| 5 | Quantification of histological changes after calibrated crush of the infraorbital optic nerve in rats显示文摘 | Gellrich NC Schimming R Zerfowski M | 2002 | Br J Ophthalmol2002，86，2： | 1 |
| 6 | The value of coronal computer tomograms in fractures of the mandibular condylar process 显示文摘 | Schimming R Eckelt U Kittner T | 1999 | Oral Surg Oral Med Oral Pathol Oral Radial Endod1999，87，5： | 1 |
| 7 | Making bone:implant insertion into tissue-engineered bone for maxillary sinus floor augmentation-a preliminary report显示文摘 | Schmelzeisen R Schimming R Sittinger M | 2003 | J Craniomaxillofac Surg2003，31，1： | 1 |
| 8 | Carotid atheroselerosis pre- dicts lower cognitive test results: a 7-year follow-up study of 4,371 stroke- free subjects-the TromsO study显示文摘 | Arntzen KA Schim er H Jolmsen SH | 2012 | Cerebrovasc Dis2012，33，2： | 1 |
| 9 | Markers in patients with squamous cell carcinoma of the oral cavity:Expression and long-term follow-up of VEGF,FLT-1 and Tie-2 in serum显示文摘 | Schimming R Gellrich NC Eyrich G | 2004 | HND2004，，3： | 1 |
| 10 | Endoglin (CD105 )expression in squamous cell carcinoma of the oral cavity 显示文摘 | Schimming R Marme D | 2002 | Head Neck2002，24，2： | 1 |
| 11 | Acid-induced amino side-chain interactions and secondary structure of solid poly-L-lysine probed by N-15 and C-13 solid state NMR and ab initio model calculations显示文摘 | Dos A Schimming V Huot M C | 2009 | J Am Chem Soc2009，131，22： | 1 |
| 12 | Endoglin(CD105) expression in squamous cell carcinoma of the oral cavity显示文摘 | Schimming R Marme D | 2002 | Head Neck2002，24，2： | 1 |
| 13 | Trafermin in acute ischemic stroke: result of phase Ⅱ/Ⅲ randomized efficacy study显示文摘 | Schim JD Kasner SE | 2000 | Neurology2000，54，： | 1 |
| 14 | Properties of a thermoactive β - 1, 3 - 1, 4 - glucanase ( lichenase ) from Clostridium thermoceUum expressed in Escherichia coli 显示文摘 | Schimming S Schwarz W H Staudenbauer W L | 1991 | Biochemical and biophysical research communications1991，177，1： | 1 |
| 15 | Com-puter-aided 3-D 'mTc-DPD-SPECT reconstructionto assess mandibular invasion by intraoral squamouscell carcinoma: diagnostic improvement or not显示文摘 | Schimming R Juengling FD Lauer G | 2000 | JCraniomaxillofac Surg2000，28，6： | 1 |
| 16 | Maximum likelihood approaches for noncoherent communications with chaotic carriers 显示文摘 | Kisel A Dedieu H Schimming T | 2001 | IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications2001，48，5： | 1 |
| 17 | Quantification of histological changes after calibrated crush of the intraorbital optic nerve in rats显示文摘 | GELLRICH N C SCHIMMING R ZERFOWSKI M | 2002 | Br J Ophthalmol2002，86，2： | 1 |
| 18 | Cultural competence among Ontario and Michigan healthcare providers显示文摘 | Schim SM Doorenbos AZ Borse NN | 2005 | Journal of Nursing Scholarship2005，37，4： | 1 |
| 19 | The clomethiazole Acute Stroke Study in tissue - type plasminogen activator- treated stroke: final result显示文摘 | Lyden P Jacoby M Schim J | 2001 | Neurology2001，57，： | 1 |
| 20 | Evaluation of high-resolution typing methods for chlamydia trachomatis in samples from heterosexual cou- ples 显示文摘 | Born RJ Christerson L Schim van der Loeff MF | 2011 | J Clin Microbiol2011，49，8： | 1 |
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