نتایج جستجو برای: surface refraction tomography

تعداد نتایج: 815894  

Journal: :Journal of Physical Oceanography 2006

Journal: :Archéosciences 2021

– The final result of the project is to create a 2D model mine plan based on results geophysical measurements. ERT was chosen as primary method in this due fact that voids and air have very high resistivity (3,3 ∙ 1016Ωm). Voids are well recognizable results. Using Seismic Refraction Tomography (SRT) planned some profiles. SRT rarely used archaeogeophysical research.

1988
A. G. RAMM

A numerical method is given to invert surface data for the refraction coefficient.

Journal: :IOP Conference Series: Earth and Environmental Science 2021

Journal: :Investigative ophthalmology & visual science 2008
Xiangtian Zhou Meixiao Shen Jing Xie Jianhua Wang Liqin Jiang Miaozhen Pan Jia Qu Fan Lu

PURPOSE To investigate refraction, corneal curvature, axial components, and the correlations between the refraction and ocular growth during the emmetropization in the C57BL/6 mouse. METHODS Ten groups of 10 mice underwent ocular measurements at 22 to 102 days after birth. Refraction was measured by photoretinoscopy and corneal radius of curvature (CRC) was measured by keratometry. Corneal th...

The refraction phenomenon at the interface of an ordinary material and a lossy metamaterial has been investigated. For oblique incidence on the lossy metamaterial, the planes of constant amplitude of the refracted wave are parallel to the interface and the plane of constant phases make a real angle with the interface (real refraction angle). The real refraction angle and hence, the real refract...

Journal: :The British journal of ophthalmology 1990
E Aurell K Norrsell

A longitudinal study of ocular refraction, position, and fixation was performed in children with a family history of strabismus. The children were examined at regular intervals between 3 months and 4 years of age, and the results are discussed in terms of changes in refraction between different ages and correlations between refraction and development of strabismus and amblyopia. Six of 34 child...

Journal: :Journal of modern optics 2011
A de Castro D Siedlecki David Borja Stephen Uhlhorn Jean-Marie Parel Fabrice Manns S Marcos

PURPOSE: To reconstruct the gradient index (GRIN) profile of human crystalline lenses ex-vivo using Optical Coherence Tomography (OCT) imaging with an optimization technique and to study the dependence of the GRIN profile with age. METHODS: Cross-sectional images of nine isolated human crystalline lenses with ages ranging from 6 to 72 (post mortem time 1 to 4 days) were obtained using a custom...

2015
Verónica Ribas González Luis Fernández-Vega María Isabel Canut

METHODS: A retrospective descriptive study of 10 patients (10 eyes) diagnosed with chronic open-angle glaucoma and high myopia. Patients underwent trabeculectomy with Ologen® implant, without mitomycin, with follow-up at one, three, six and nine months. Follow-up assessment included refraction, intraocular pressure (IOP), presence of complications, and examination of the bleb and implant using ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1391

in this thesis protic and aprotic ammonium-based ionic liquids were synthesized and their surface tensions were measured in the range of 298-373k. the protics are alkyl ammonium-based ils with the carboxylate (formate, acetate, propionate) anion and aprotics are quaternary ammonium-based ils with bis(trifluoromethylsulfonyl)imide anion. capillary rise method was used for surface tension measure...

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