نتایج جستجو برای: optical effect
تعداد نتایج: 1881388 فیلتر نتایج به سال:
An analysis based on the Jones matrix theoretical analysis is presented in this paper, which is based on the distributed optical fiber vibration sensor to study the polarization effect. A new improved distributed optical fiber structured is designed by using a Faraday rotation mirror ,the system remove the linear birefringence and the orientation birefringence, and it is insensitive to the chan...
A long-standing solar problem has been to measure the coronal magnetic field. We believe it determines the coronal structure and dynamics from the upper chromosphere out into the heliospheric environment. It is only recently that Zeeman splitting observations of infrared coronal emission lines have been successfully used to deduce the coronal magnetic flux density. Here we extend this technique...
the aim of this study has been to find answers for the following questions: 1. what is the effect of immediate correction on students pronunciation errors? 2. what would be the effect of teaching the more rgular patterns of english pronunciation? 3. is there any significant difference between the two methods of dealing with pronuciation errore, i. e., correction and the teaching of the regular ...
flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...
در اینجا امکان تصحیح اثر پراش یا جمع آوری انرژی که در اثر پراش بصورت واگراشونده، از دست میرود را با استفاده از روش مزدوج فازی اپتیکی (optical phese conjugtion)، توسط مخلوط چهار موجی تبهکن (dfwm)، بصورت عددی بررسی کرده ایم. این عمل را برای روزنه با قطرهای مختلف pcm با بهره های مختلف انجام داده ایم. با توجه به سرعت کامپیوتری که بکار گرفته شده و برنامه نرم افزاری استفاده شده و مدت اجراء برنامه، جو...
We investigate the saturation effect, which describes the violation of the linearity between the measured photoacoustic amplitude and the object's optical absorption coefficient in functional photoacoustic imaging when the optical absorption in the object increases. We model the optical energy deposition and photoacoustic signal generation and detection in a semi-infinite optical absorbing obje...
هدف این مطالعه تعیین کردن این مساله است که آیا فراگیران فارسی زبان قادر به تطبیق پارامتری ضمیر موصولی that در جملات ساده و پیچیده ی انگلیسی در سایه اصل دستور جهانی هستند یا خیر. به علاوه نقش جنسیت در رابطه با آزمون تشخیص درستی یا نادرستی جملات دستوری مورد بررسی قرار گرفت. داده ها از 54 دانشجوی فراگیر زبان انگلیسی در دانشگاه فردوسی مشهد گردآوری شد. شرکت کنندگان در آزمون شامل 28 زن (51.85 درصد)و ...
the effect of evaporation rate on structural, morphological and optical properties of electron beam evaporated cds thin films have been investigated. cds thin film deposited by electron beam evaporation method in 12nm/min and 60nm/min evaporation rates on glass substrates. x-ray diffraction, scanning electron microscopy, uv-vis-nir spectroscopy and atomic force microscopy were used to character...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید