we prepared a highly purified and relatively heat stable form of factor viii which contained 25 units per ml (u/ml) activity using peg-4000 and developed an effective and new manufacturing process. heat treatment was performed at 80°c for 72 hrs in the presence of different stabilizers. in our studies, we used different organic solvents as preservatives to maintain factor viii activity, since f...

the risks of transmitting viral infection by blood and plasma-derived products have long been known and still remain an area of concern. in this study, in the process of purifying human factor vii from prothrombin complex, sid treatment using tri-n-butyl phosphate and tween 80 was employed and its capability and efficacy was studied. the results indicated that the process did not affect the bio...

In order to advance the effectiveness of higher education, we concentrated attention on teachers’ classroom behaviours and aimed to develop an inventory for evaluating teacher’s charisma in college settings. This study identified teacher characteristics that are indicators of teaching charisma and then developed a teaching evaluation questionnaire based on these indicators. The exploratory fact...

Radiotherapy X-ray facilities require structural barriers to reduce radiation. To calculate the thickness of these barriers, rather conservative limits are normally set to ensure that the radiation limits are not exceeded. Recently, members of our department published a more exact method for calculating the thickness of primary barriers, which took into account the scatter radiation generated i...

The work presents a method of obtaining an aqueous raspberry extract as well as its physicochemical and analytical characteristics. The paper also contains a description of the method of preparation of nanosilver suspensions based on this extract. The raspberry extract served as a source of phenolic compounds which acted as both reducing and stabilizing agents. Suspensions of silver nanoparticl...

The most prevalent form of login has used an ID and password which is classified 1 factor authentication. However the lax of security, user required the more secure way to login so firms have implemented 2 factor authentication involving OTP(One time Password). Despite the increased security, users must endure the inconvenience of downloading a program on their device and inputting a 6 to 8 dig...