Contemporary research is improving techniques to maneuvers control in the area of spacecraft. In the aspect of further development of investigations, a high-performance strategy of maneuvers control is proposed in the present research to be applicable to deal with a class of the aforementioned spacecrafts. In a word, the main subject behind the research is to realize a high-performance three-di...

Consider the kernel Magg of the Magnus representation of the Torelli group and the kernel Burn of the Burau representation of the braid group. We prove that for g ≥ 2 and for n ≥ 6 the groups Magg and Burn have infinite rank first homology. As a consequence we conclude that neither group has any finite generating set. The method of proof in each case consists of producing a kind of “Johnson-typ...

Temperature evolution and skin burn process in biological samples exposed to laser radiation are investigated in this communication. A one-dimensional multi-layered model is presented and transient temperature is numerically estimated using a finite difference method. A damage function corresponding to the extent of burn injury and using the Arrhenius assumptions is proposed. Two experimental b...

The objective of this work is to develop and validate a numerical model that can conduct a transient analysis of heat transfer and the corresponding damage in skin burns. Once this model is developed, an examination of the effect of cooling on reducing damage from skin burns is carried out. A finite element numerical model is used to simulate the conduction of heat and the transient progress of...

Emerging bacterial resistance to multiple drugs is an increasing problem in burn wound management. New non-pharmacologic interventions are needed for burn wound disinfection. Here we report on a novel physical method for disinfection: antiseptic pulsed electric field (PEF) applied externally to the infected burns. In a mice model, we show that PEF can reduce the load of multidrug resistant Acin...

Fire promotes an abundance of nest sites for the stem nesting bee Exoneura nigrescens, which remain viable for approximately 10 years. The finite duration of nesting substrate and localized fire events suggest that migration should minimize genetic structure among suitable habitat patches. Exoneura nigrescens was sampled from 7 localities with a known fire history in southwestern Victoria, Aust...

The UMTRI Airbag Skin Burn Model has been improved through laboratory testing and the implementation of a more flexible heat transfer model. A new impinging jet module based on laboratory measurements of heat flux due to high-velocity gas jets has been added, along with an implicit finite-difference skin conduction module. The new model can be used with airbag gas dynamics simulation outputs, o...

In this paper we propose a method for the objective assessment of burn scars. The quantitative measures developed in this research provide an objective way to calculate scar elasticity. The approach combines range data and the mechanics and motion dynamics of human tissues. Active contours are employed to locate regions of interest and to find displacements of feature points using automatically...

burns are injuries which may require long hospitalization and may result in important impairment and disability. burn injuries are still common especially in developing countries. assessment of the epidemiology of burns is very important for introduction of preventive methods. this study was conducted in yazd to assess and describe the epidemiology of burns including its main causes, and its de...