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...

Background and Objective: Breast cancer is the most common cancer and the second leading cause of cancer death among women worldwide. Mammography is a sensitive and specific test that is used for early diagnosis of breast cancer. Mammography screening behavior is one of the behaviors that early study on its stage of change can be used in proper planning and effective interventions for performin...

Purpose: Present study was conducted to investigate effectiveness of motivational enhancement therapy on addiction potential and stages of change readiness and treatment eagerness of addicts. Methods: The research method was semi-experimental and its design was pretest. The population of the study consisted of male addicts who had presented to Rasht addiction treatment clinics of district 2 in ...

Background & Objectives: Back pain represents one of the most common occupational problems in nursing. Since the correct posture has a key role in prevention of back pain, this study was performed to determine of operating- room nurses' readiness to adopt correct posture based on Transtheoretical Model (TTM) . Methods: This descriptive-analytical study included a convenience sample of 110 opera...

among the low–dimensional allotropes of carbon, nanotubes and graphene have attracted very much attention from nano–science and nanotechnology specialists. they have been proposed as building blocks in nanometer device engineering. however, these structures are not defect–free. in this thesis, we focused on defective carbon nanotubes and graphene, and studied the effect of couple of very common...