Minimum Covering Seidel Energy of a Graph

In this paper we have computed minimum covering Seidel energies ofa star graph, complete graph, crown graph, complete bipartite graph and cocktailparty graphs. Upper and lower bounds for minimum covering Seidel energies of agraphs are also established.DOI : http://dx.doi.org/10.22342/jims.22.1.234.71-8

DEVELOPMENT OF A MICROFLUIDIC GAS GENERATOR FROM AN EFFICIENT FILM-BASED MICROFABRICATION METHOD

Recently, tape&film based microfabrication method has been studied for rapid prototyping of microfluidic devices due to its low cost and ease of fabrication [1]. But most of the reported film-based microfluidic devices are simple single-layer patterned 2D designs, whose potential applications are limited. In this paper, we present the design, fabrication and testing results of a 3D structured microfluidic gas generator prototype. This gas generator is used as an example to introduce our new approach of film-based fabrication method towards lab-use microfluidic research, which usually requires constant change of design and prefers low fabrication cost and short fabrication period. The prototype is a film-based comprehensive microfluidic gas generator which integrates self-circulation, self-regulation, catalytic reaction and gas/liquid separation. Time and economy efficiency are the biggest merit of this method. The only required facility during the whole process is a digital craft-cutter. The working principle of the device is illustrated in Fig.1

The effects of prolonged vegetative reproduction of the two Iranian olive cv. tree cultivars (Dezful Baghmalek and Dezful Safiabad) on morphological traits

Somaclonal variation of the two Iranian olive cultivars named Dezful Baghmalek (DB) and Dezful Safiabad (DS) during the long-term propagation among 7 subcultures were evaluated. Morphological traits such as leaf length, leaf width, number of leaves on shoot, the length of shoots, internode distance and rooting percentage were measured. The study results showed that DB affected somaclonal variations more than the DS cultivar, especially rooting percentage, but the DS cultivar had a steady behavior, especially rooting percentage, during several subcultures. Although in all the traits that were fluctuating, irregular and unpredictable changes such as the length of shoots were observed, the most significant trait that was studied with almost a similar vibration in the two cultivars were leaf length and width changes measures. Totally, we could not select any specific subculture period for the creation of the maximum satisfied morphological changes, because it was suitable for increasing the internode distance (DB) and leaf length which were in the second and seventh subcultures that were optimized. Consequently, it was suitable for DS in the seventh subculture. For the purpose of accomplishing the proper morphological changes in the length of shoots, number of leaves and enhancement of rooting percentage in DB cultivar and also, internode distance and leaf width increase in DS cultivar, somaclonal variation during several subcultures will be appropriate.Key words: Olea europaea L., somaclonal variation, Dezful cultivars

Support in Clinical Settings as Perceived by Nursing Students in Iran: A Qualitative Study

Background: Although support is one of the most substantial needs of nursing students during clinical education, it is not clearly defined in the literature. Objectives: The current study aimed to explore the concept of support in clinical settings as perceived by nursing students. Materials and Methods: A qualitative content analysis was used to explore the meaning of student support in clinical settings. A purposive sampling with maximum variation was used to select the participants among bachelor nursing students in the nursing school of Babol University of Medical Sciences in the north of Iran. Semi-structured interviews were conducted to gather the perceptions and experiences of seventeen nursing students. Conventional content analysis was applied to analyze the data. Results: In the current study, the main theme, nurturance, was emerged with seven subthemes of humanistic behavior with the student, respectful communication with students, accepting the student in the clinical setting, sustaining confidence, need based supervision, accepting the profession in the society and empowerment. Conclusions: Nursing students support in the clinical education requires a nurturing care; a care that leads to the sense of worthiness and respectability in students and contributes to the improvement of their clinical abilities