در این پایان نامه که بر اساس مقاله m.a. ruiz, d. stojanoff, some properties of frames of subspaces obtained by operator theory methods, j. math. anal. appl. 343 (2008) 366-378. تنظیم شده است، روابط بین عملگر ها ، پایه های متعامد یکه زیرفضاها و قاب های زیر فضابرای یک فضای هیلبرت جدایی پذیر بررسی می شود. شرایط کافی را روی پایه متعامد زیرفضاهای e = {ei}i?i در فضای هیلبرت h و عملگر پوشای t ? l...

a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...

one very decisive factor in students’ academic destiny is the result they get at final term examinations. because of its importance, both students and teachers are curiously anxious about them. as normally it is the case, these final term tests are prepared hurriedly in short time by teachers which result in students’ dissatisfaction, complaining on how the test was different from their expecta...

Background and Aim: At present, there are various methods for performing diagnostic tests. Due to the fact that saliva is easily available compared to other body fluids, it can be collected from patients in a non-invasive way and there is no risk of cross-infection because of it, so its use has become more common. Also, the analysis of substances in saliva can be a reflection of a person's oral...

Malaria is one of the most important tropical infectious diseases. The incidence of malaria worldwide is estimated to be 300–500 million clinical cases each year with a mortality of between one and three million people worldwide annually. The accurate and timely diagnosis of malaria infection is essential if severe complications and mortality are to be reduced by early specific antimalarial tre...

abstract amino acids are building blocks of proteins, and play a vital role in living beings existence and their functionality. the interaction of these compounds with metal ions is of great importance to biochemists, and chemists, because their functions can be utilized as a model in understanding enzymes mechanism for transport of metal ions to tissues. among twenty essential amino acids w...

in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...

Today rapid and progressive improvements in clinical laboratory science are provided in terms of diagnostic tests technology. These changes call for educated experts with sufficient practical skills who can use new technologies and modern equipment. In other words, the employment of experienced and skilled laboratory technicians and technologists, as the main assets of each laboratory, is a com...

due to extraordinary large amount of information and daily sharp increasing claimant for ui benefits and because of serious constraint of financial barriers, the importance of handling fraud detection in order to discover, control and predict fraudulent claims is inevitable. we use the most appropriate data mining methodology, methods, techniques and tools to extract knowledge or insights from ...

Background and Aim: To manage and control malaria - one of the most important infectious diseases in tropical and subtropical regions – a quick and accurate malaria diagnosis method is necessary as a high priority. For this purpose, several methods have been developed for the diagnosis of malaria, and currently, the examining the peripheral blood slide with an optical microscope as a gold stand...