abstract background: pressure ulcer is one of the main concerns of nurses in medical centers around the world, which, if untreated, causes irreparable problems for patients. in recent years, nitric oxide (no) has been proposed as an effective method for wound healing. this study was conducted to determine the effect of nitric oxide on pressure ulcer healing. materials and methods: in this clini...

Healing agent carriers play a significant role in defining the performance of autonomous self-healing system. Particularly, ability to survive during mixing process and release healing when cracks occur without affecting mechanical properties cementitious composite. Up now, these issues are still concern since glass capsules unable process, while some types microcapsules were reported cause dec...

One of the main challenges space exploration is to properly protect astronauts from hazards environment. Space suits were hence created crewmembers during extravehicular activities, but they are currently unable withstand damage after, for example, impacts with micrometeoroids and orbital debris (MMOD), would depressurize collapse if punctured, catastrophic consequences. In this context, possib...

We argue that there is an upper limit on the complexity of software that can be constructed using current methods. Furthermore, this limit is orders of magnitude smaller than the complexity of living systems. We argue that many of the advantages of autonomic computing will not be possible unless fundamental aspects of living systems are incorporated into a new paradigm of software construction....

There has been extensive work on the existence of periodic solutions for nonlinear second order autonomous differantial equations, but little work regarding the third order problems. The popular Poincare-Bendixon theorem applies well to the former but not the latter (see [2] and [3]). We give a necessary condition for the existence of periodic solutions for the third order autonomous system...

Modern robotics (Siciliano & Khatib, 2008) trends not only to be reliable, cheap, autonomous, but also cognitive, adaptive, safe and friendly for users (Dodd, 2007). New generation of robot systems is capable of self-configuration (Shen at al., 2006), self-diagnostics and self-healing (Mokhtar et. al., 2008), possesses enough sensing features and computational intelligence on board not only to ...