Masumeh Moradkhani Zadeh
Pediatrician, Ali Asghar Children’s Hospital, Iran University of Medical Sciences
[ 1 ] - The value of serum level of S100B protein in predicting brain edema in children with diabetes ketoacidosis
Background and Objective: The S100B protein has recently been considered as an important marker for predicting severe brain damage; however there has been very little evidence of increasing this marker in cerebral edema due to metabolic disorders such as diabetes ketoacidosis (DKA). This study was designed and performed to evaluate the prognostic role of S100B protein in predicting brain edema ...
[ 2 ] - پیشنهاد یک طرح جدید به‌منظور افزایش بازده دیود گسیل نور گالیم نیتراید مبتنی بر بلور فوتونی
بازتاب داخلی کلی نور یکی از پدیده‌هایی است که باعث کاهش بازده دیود گسیل نور می‌شود. در این مقاله، با به‌کارگیری بلورهای فوتونی مبتنی بر حفره و کاهش بازتاب داخلی کلی نشان داده شد که بازده یک دیود گسیل نور GaN را می‌توان بیش از دو برابر افزایش داد. با بهره‌گیری از روش تفاضل محدود حوزه زمان و استفاده از 15 دوره تناوب با ثابت شبکه nm 680، ارتفاع حفره nm 210 و نسبت طول حفره به ثابت شبکه 0.5 به ازای ...
[ 3 ] - Quality Factor Enhancement of Optical Channel Drop Filters Based on Photonic Crystal Ring Resonators
In this paper, a channel drop ring resonator filter based on two dimensional photonic crystal is proposed which is suitable for all optical communication systems. The multilayer of silicon rods in the center of resonant ring enables one to adjust resonant wavelength of the ring and enhance power coupling efficiency between ring and waveguide. Refractive index and radius of multilayer rods insid...
[ 4 ] - The value of serum level of S100B protein in predicting brain edema in children with diabetes ketoacidosis
Background and Objective: The S100B protein has recently been considered as an important marker for predicting severe brain damage; however, there has been very little evidence of increasing this marker in cerebral edema due to metabolic disorders such as diabetes ketoacidosis (DKA). This study was designed and performed to evaluate the prognostic role of S100B protein in predicting brain edema...
[ 5 ] - Ultra-fast 1-bit comparator using nonlinear photonic crystalbased ring resonators
In this paper, a photonic crystal structure for comparing two bits has beenproposed. This structure includes four resonant rings and some nonlinear rods. Thenonlinear rods used inside the resonant rings were made of a doped glass whose linearand nonlinear refractive indices are 1.4 and 10-14 m2/W, respectively. Using Kerr effect,optical waves are guided toward the correc...
[ 6 ] - A New Proposal for 4-to-2 Optical Encoder Using Nonlinear Photonic Crystal Ring Resonators
In this paper, we proposed an all optical 4-to-2 encoder that has 4 input and 3 output ports. This device generates a 2 bit binary code based on which input port is active. We used nonlinear photonic crystal ring resonators along with optical power splitter for realizing the proposed encoder. In this device the switching rate and area are obtained about 333 GHz and 612µm2 respectively.
[ 7 ] - Ultra-Fast All-Optical Half Subtractor Based on Photonic Crystal Ring Resonators
Abstract: In this paper, we aim to design and propose a novel structure for all-opticalhalf subtractor based on the photonic crystal. The structure includes two optical switches,one power splitter, and one power combiner. The optical switches are made of theresonant rings which use the nonlinear rods for dropping operation. The footprint of thedesigned structure is about...