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Comparison of Injective and Contact Effect of Silver Nanoparticles on The Rate of Hemoglobin Changes in Male Rats
Zahra Amirkhani Dehkordi, Nooshin Naghsh, Heydar Aqbaba,
Volume 1, Issue 1 (10-2012)
Abstract

Background and objective:

The use of silver nanoparticles is one of the functional areas of nanotechnology. These nanoparticles have an antibacterial and antifungal quality. The active ions released form silver nanoparticles can produce free radicals and damage different types of cell. Considering the importance of hemoglobin, this study investigates Comparison of injective and contact effect of silver nanoparticles on the rate of hemoglobin changes in male rats.

Materials and Methods:

In this experimental study were 72 male adult Wistar rats with a mean weight of 225 to 250 grams. The animals were randomly divided into ten groups of eight rats. Nanoparticles were administered to treatment groups using the injective method through intraperitoneal (IP) and the skin contact method with concentrations of 50, 100, 200, and 400 ppm. In order to assimilate the shock resulted by injection and contact, physiologic serum of the same amount was injected to rats of control group or contacted to their skin. Then, blood was drawn from the internal corner of the rats’ eye using capillary tubes. The mean level of hemoglobin in the rats’ blood in the treatment and control group was compared 12 days after the treatment. To compare the means, ANOVA test was used.

Results:

The results showed the dependence of dose and the rate of hemoglobin changes in intraperitoneal injection and the lack of effect of silver nanoparticles on hemoglobin changes in skin contact.

Conclusion:

The effectof the injection of silver nanoparticles on the rate of hemoglobin has been dose-dependent. But the skin contact method has had no effects on the rate of hemoglobin. It seems that a low concentration of nanoparticles and a short period of time cause a lack of effect on the factor.
Comparing learning styles among students of Para medicine and Health faculties in Golestan University of medical sciences
Ghorban Mohammad Koochaki, Behrooz Kord, Senieh Sotoodeh, Mansoureh Tatari,
Volume 4, Issue 1 (5-2016)
Abstract

Background and Objectives: The validity of an educational system is dependent on students' learning. Learning is a complex variable which is affected by multiple factors. One of the most important factors is learning styles. Knowledge of learning styles of students to educational programs is very important. Therefore, this study aimed to determine students' learning styles among students of Para medicine and Health faculties in Golestan University of medical sciences.

Methods: In this cross-sectional study, 401 students of the faculty of Para medicine and Health in Golestan University of Medical Sciences since 1391 till 1392 were selected and filled out the Standard Kolb Learning Style Inventory (LSI) which was previously tested for reliability (8.0). Data was analyzed with SPSS version 18.0 using Chi-square and Fisher's exact test.

Results: The mean age of students was 20.57 and 71.8 percent of them were female students. Learning styles of students included a convergent (63.4 %), absorber (25.4 %), accommodating (7.5%) and divergent (3.7 %). Learning style of study had no statistically significant difference in comparison to sex, school, age, GPA, credits, semester and education levels (P>0.05).

Conclusion: Converging and absorbing learning styles were more dominant among students. Therefore, it is recommended to use training methods which fit this style such as showing hand-writings and presentations with self-study materials, simulations, laboratory assignments and problem-based learning.


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