Mostafa Arjomandi Lari, Saeed Parhoodeh, Ali Rohani Sarvestani, Ghader Alahverdi,
Volume 9, Issue 1 (4-2019)
Abstract
Background & Objective: The necessity of using wireless communications and the use of electromagnetic waves in today's world is obvious to everyone. Using of these equipment and development of them, although have many benefits but causes some anxiety on the way in which they influence on environment. One of the most effective ways of decreasing the unwanted effects of these waves is using of the absorber coatings of these waves.
Materials & Methods: First, iron chloride powder was added to the aqueous solution of poly vinyl alcohol. Then, aqueous solution of sodium hydroxide was added to it. Subsequently, the iron oxide nanostructures that appeared in the bottom of the dish as sediment were collected by using filter paper and then washed several times with deionised water and ethanol. From the synthesized materials, sheets of thickness of 0.5 and 1 mm were made.
Results: X-ray diffraction results proved the synthesis of iron oxide (Fe3O4). The analysis also showed that the synthesized nanostructures have a cubic structure and the average size of crystallites is 12 nm. The electron microscopy images showed that the nanostructures have a sheet-like shapes and their thickness are about 30 nm. The results of the absorption of electromagnetic waves in the range of 8 to 18 GHz showed that iron oxide nanostructures can absorb microwave waves in this range, which absorption increases in greater thicknesses.
Conclusion: Coatings containing iron oxide nanostructures can act as microwave absorber and they could have an effective role in eliminating or reducing the unwanted effects of electromagnetic waves.
Saeed Parhoodeh, Ghader Allahverdi,
Volume 9, Issue 2 (7-2019)
Abstract
Recent advances in science and technology caused the Revolution in many different fields of science and Industry. The term lab on a chip or performing difficult analyses only in a short time and in a small space is an expression which becomes very common in recent years. Today, the things which were wishes in the past, are becoming real and inserted in the real life of humankind. In this article, it is tried to study and discuss a special kind of lab on a chip technology, which is called microfluidic (or microchannel). Although this is a vast technology, and it was inserted in many branches of Science and Industry, but here, we have discussed only the applications of this technology in medical and biological diagnostic fields. In this article, we have especially surveyed the devices which were made based on this technology for DNA analysis, devices for detection based on separation, devices for cell sorting and handling and devices for protein-based applications.
Vahid Parhoodeh, Farah Habib,
Volume 10, Issue 4 (11-2020)
Abstract
The impact of architectural space and its colors on patients is one of the fundamental principles and important challenges in the construction of hospitals. In addition to the practical and physical aspects of the effectiveness of the patient's treatment, this effect is one of great importance to the mental and psychological aspects left over from the treatment period. The depth of this effect is more noticeable in the patient's living space - that is, in the area where he spends more time - and in the mood and vivacity of the treatment staff, who may spend more than half of their life in this space. They have a dramatic impact. The use of inspiring elements is not specific to the architecture of medical centers but is even used in the architecture of other buildings, such as ordinary houses. The peak of the use of these elements can be found in the architecture of places of worship, shrines, and especially in traditional Iranian mosques. In this research, these therapeutic elements are first introduced in the architectural structure, especially the architecture of the interior surfaces of traditional Iranian mosques, and then how they are used to create space and design the interior of hospitals. Based on the studies, the combination of architecture used in the interior of Iranian mosques with the architectural design requirements of a medical space can effectively promote the mood, vitality, and mental health of patients and medical staff.
