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45篇 您的检索式:作者名="Diaa"
    题名 作者 年代 出处 被引量
1Colon Neoplasms Develop Early in the Course of Inflammatory Bowel Disease and Primary Sclerosing Cholangitis显示文摘Erin W. Thackeray Phunchai Charatcharoenwitthaya Diaa Elfaki Emmanouil Sinakos Keith D. Lindor 2011Clinical Gastroenterology and Hepatology2011,,1:2
2Cholangiocarcinoma: Expanding the Spectrum of Risk Factors显示文摘Diaa H. Elfaki Andrea A. Gossard Keith D. Lindor 2008Journal of Gastrointestinal Cancer (-)2008,,1:2
3Silicon micromirrors with three-dimensional curvature enabling lensless efficient coupling of free-space light显示文摘Miniaturized optical benches process free-space light propagating in-plane with respect to the substrate and have a large variety of applications,including the coupling of light through an optical fiber.High coupling efficiency is usually obtained using assembled micro-optical parts,which considerably increase the system cost and integration effort.In this work,we report a high coupling efficiency,monolithically integrated silicon micromirror with controlled three-dimensional(3D)curvature that is capable of manipulating optical beams propagating in the plane of the silicon substrate.Based on our theoretical modeling,a spherical micromirror with a microscale radius of curvature as small as twice the Gaussian beam Rayleigh range provides a 100%coupling efficiency over a relatively long optical path range.Introducing dimensionless parameters facilitates the elucidation of the role of key design parameters,including the mirror’s radii of curvature,independent of the wavelength.A micromachining method is presented for fabricating the 3D micromirror using fluorinated gas plasmas.The measured coupling efficiency was greater than 50%over a 200-mm optical path,compared to less than 10%afforded by a conventional flat micromirror,which was in good agreement with the model.Using the 3D micromirror,an optical cavity was formed with a round-trip diffraction loss of less than 0.4%,resulting in one order of magnitude enhancement in the measured quality factor.A nearly 100%coupling was also estimated when matching the sagittal and tangential radii of curvature of the presented micromirror’s surface.The reported class of 3D micromirrors may be an advantageous replacement for the optical lenses usually assembled in silicon photonics and optical benches by transforming them into real 3D monolithic systems while achieving wideband high coupling efficiency over submillimeter distances.Yasser M Sabry Bassam Saadany Diaa Khalil Tarik Bourouina 2013Light(Science & Applications)2013,2,1:1
4Vascular endothelial growth factor and insulin-like growth factor - 1 in polycystic ovary syndrome and their relation to ovarian blood flow 显示文摘Diaa Eldeen M Abd E1Aal Safwat A 2005European Journal of Obstetrics & Gynecology and Reproductive Biology2005,118,2:1
5Obstetric outcome of excessively overgrown fetuses ( ≥ 5000 g) : a case-control study显示文摘Summaya SA Diaa EER Mutairu E 2003J Perinat Med2003,31,4:1
6Muhiplicative Noise Removal Using Variable Splitting and Onstrained Optimization 显示文摘Jose M Bioucas Diaa 2010Transaction on Image Processing2010,3,16:1
7Hepatoprotective effect of flavonol glycosides rich fraction from egyptianVicia calcarata desf. Against CCI4-induced liver damage in rats显示文摘Abdel Nasser B. Singab Diaa T. A. Youssef Eman Noaman Saeed Kotb 2005Archives of Pharmacal Research2005,,7:1
8Cartilage perichondrium composite graft (CPCG) in pediatric tympanoplasty 显示文摘Diaa M 2001Int J Pediatr Otorhinolaryngol2001,59,1:1
9Vascular endothelial growth factor and insulin-like growth factor-1 in polycystic ovary syndrome and their relation to ovarian blood flow 显示文摘Diaa EM Abd EA Safwat A 2005Eur J Obstet Gynecol Reprod Biol2005,118,2:1
10Surgical Outcome and Improvement in Quality of Life after Microvaseular Decompression for Hemifacial Spasms: A Case Series Assessment Using a Validated Disease-Specific Scale显示文摘Ibyendu K Ray Diaa Bahgat Shirley McCartney 2010Stereotact Funct Neurosurg2010,88,:1
11On-chip parallel Fourier transform spectrometer for broadband selective infrared spectral sensing显示文摘Optical spectrometers enable contactless chemical analysis.However,decreasing both their size and cost appears to be a prerequisite to their widespread deployment.Chip-scale implementation of optical spectrometers still requires tackling two main challenges.First,operation over a broad spectral range extending to the infrared is required to enable covering the molecular absorption spectrum of a broad variety of materials.This is addressed in our work with an Micro-Electro Mechanical Systems(MEMS)-based Fourier transform infrared spectrometer with an embedded movable micro-mirror on a silicon chip.Second,fine spectral resolutionΔλis also required to facilitate screening over several chemicals.A fundamental limit states thatΔλis inversely proportional to the mirror motion range,which cannot exceed the chip size.To boost the spectral resolution beyond this limit,we propose the concept of parallel(or multi-core)FTIR,where multiple interferometers provide complementary optical paths using the same actuator and within the same chip.The concept scalability is validated with 4 interferometers,leading to approximately 3 times better spectral resolution.After the atmospheric contents of a greenhouse gas are monitored,the methane absorption bands are successfully measured and discriminated using the presented device.Alaa Fathy Yasser M.Sabry Sebastien Nazeer Tarik Bourouina Diaa A.Khalil 2020Microsystems & Nanoengineering2020,6,1:1
12The age andsymptomatology of natural menopause among United Ar-ab Emirates women显示文摘Diaa EER Abdulbari B Mutairu E 1998Maturitas1998,29,:1
13Vascular endothelialgrowthfactor and insulin-like growth factor-1 in polycystic ovary syn-drome and their relation to ovarian blood flow显示文摘Diaa EM Abd EA Safwat A 2005Eur J Obstet Gynecol Reprod Bio2005,118,2:1
14Combined estro- gen and ghrelin administration restores number of blood vessels and collagen type I/Ill ratio in the urethral and a- nal canal submucosa of old ovariectomized rats显示文摘Diaa E E Rizk D E Hassan H A 2008Int Urogynecol J2008,19,4:1
15Controls on the distribution of rare earth elements in shallow groundwaters显示文摘Gruaua G Diaa A Olivié-Lauqueta G 2004Water Research2004,38,:1
16Combined estrogen and ghrelin administration restores number of blood vessels and collagen type Ⅰ/ Ⅲ ratio in the urethral and anal canal submucosa of old ovariectomized rats 显示文摘Diaa E E Rizk D E Hassan H A 2008Int Urogynecol J2008,19,4:1
17Combined estrogen and ghrelin administration restores number of blood vessels and collagen type I/III ratio in the urethral and anal canal submucosa of old ovariectomized rats显示文摘Diaa E. E. Rizk Hazem A. Hassan Ahmed H. Al-Marzouqi Gaber A. Ramadan Soha S. Al-Kedrah Sayel A. Daoud Mohamed A. Fahim 2008International Urogynecology Journal2008,,4:1
18Vascular endothelial growth factor and insulin-like growth factor-1 in polycystic ovary syn- drome and their relation to ovarian blood flow 显示文摘Diaa Eldeen M Abd E1 Aal Safwat A 2006European Journal of Obstetrics & Gynecology and Reproductive Biology2006,118,2:1
19An International Urogynecological Association (IUGA)/International Continence Society (ICS) joint report on the terminology for female pelvic floor dysfunction显示文摘Bernard T. Haylen Dirk Ridder Robert M. Freeman Steven E. Swift Bary Berghmans Joseph Lee Ash Monga Eckhard Petri Diaa E. Rizk Peter K. Sand Gabriel N. Schaer 2010International Urogynecology Journal2010,,1:1
20Split-seed:a new tool for maize researchers显示文摘Diaa A.A Sairam R Reddy T.S.G 0,,:1
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