نتایج جستجو برای: optical techniques

تعداد نتایج: 875271  

Journal: :iranian journal of medical physics 0
neda jahangiri department of photonics, kerman university of technology, kerman, iran

this article reviews the development of non-invasive optical techniques for determination of blood glucose concentrations in diabetic patients. early diagnosis and daily management are essential for ensuring the healthy life of diabetic patients. the determination of blood glucose concentration with common devices involves the chemical analysis of blood samples, which are obtained by pricking t...

A. Salehi, Jawad ,

In this paper we present an in-depth review on the trends and the directions taken by the researchers worldwide in Optical Code Division Multiple Access (OCDMA) systems. We highlight those trends and features that are believed to be essential to the successful introduction of various OCDMA techniques in communication systems and data networks in near future. In particular we begin by giving a c...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم 1393

in this thesis, structural, electronical, and optical properties of inverse pervskite(ca3pbo) in cubic phase have been investigated.the calculation have been done based on density functional theory and according to generalized gradiant approximate (gga) as correlating potential. in order to calculate the configurations, implementing in the wien2k code have been used from 2013 version. first of ...

Journal: :Proceedings of the IRE 1959

Journal: :Journal of Modern Optics 2015

Journal: :International Journal of Science and Engineering Applications 2018

Journal: :Nanotechnology, Science and Applications 2015

جابری, محمد , رحیم پور سلیمانی, حمید , فرهبد, امیر حسین,

 The structure of longitudinal modes of a passively Q-switched, non-planar unidirectional ring-resonator,with Nd:YAG active medium is described in this article. Two different techniques are used to study the longitudinal mode structure of the laser resonator. At first, the fast-fourier transform technique is applied for analyzing the mode beating of the optical fields by intensity frequency str...

جماالدین علوی املشی, , فرید ناصح نیا, , مرتضی ساسانی قمصری, ,

  PbS semiconductor non-crystals have been synthesized in order to study the modification of their electronic structures and optical properties in relation to their size. The synthesis has been carried out by using the techniques of colloidal chemistry. Strong quantum confinement behavior has been observed based on the analysis of optical spectra of these particles. The average particle size ap...

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