A TunaCan Water-Based Thruster for CubeSats: System Development and Qualification

Governments and industries developed an increasing interest towards CubeSats and Small Satellites for commercial and scientific missions, however the general absence of propulsion capabilities is limiting the market potential. Electric propulsion systems are generally associated with low thrust and high power requirements, while cold gas thrusters are inefficient because of the low Specific Impulse (lsp). SteamJet Space Systems has developed a very compact, low pressure, water powered electrothermal thruster able to provide a high level of thrust, using less than 20W of power and with a specific impulse in excess of 170 s

Fabry-Perot Bound States in the Continuum in an Anisotropic Photonic Crystal

An anisotropic photonic crystal containing two anisotropic defect layers is considered. It is demonstrated that the system under can support a Fabry-Perot bound state in the continuum (FP-BIC). A fully analytic solution of the scattering problem as well as a condition for FP-BIC have been derived in the framework of the temporal coupled-mode theory

Medicine tracker for Smart TV

In this paper we estimate relevance of Smart TV as a platform for mobile healthcare applications. Suitability estimation is based on considering the roles that Smart TV can play in mobile healthcare area and benefits it provides. On top of our analysis we propose a prototype of a mobile healthcare application. Then, we present the actual application that is being developed accordingly to these specifications. Finally, we make a conclusion about relevance of Smart TV as a platform for mHealth applications

Design and implementation of the first aid assistance service based on Smart-M3 platform

Smart technologies may be successfully applied in healthcare for creation of an IoT-enabled proactive pre-hospital and first aid assistance mobile services. A variety of smart services for the m-Health scenarios may be constructed by interaction of multiple knowledge processors (software agents) running on devices of the IoT environment. Thus, IoT-enabled m-Health applications should provide connection with smart space. It is possible to build such kind of services with Smart-M3 platform. The ontology describes interaction rules and the high-level design of the service. The first aid assistance scenario was chosen as a basic one. According to this scenario, sympathetic people provide first aid to patients in case of emergency. The study is focused on the implementation of the first aid assistance service consists of knowledge processors running on Linux servers and Android mobile devices. Such service should be scalable with adding new modules, sensors or participants. The purpose is to evaluate a possibility of application of a smart spaces approach for implementation mobile first aid services. Besides, implementation issues of server and client sides are discussed

Mobile phone sensors in health applications

One of the most important device in our lives is a mobile phone. For now, it is a powerful computing platform equipped with various sensors. Embedded sensors can be used in multiple domains, such as environmental monitoring, social networks, safety and also healthcare. In this paper we survey the main use cases of mobile phone sensors in mobile healthcare. We classify the proposed mHealth sensing applications according to sensor types they use and discuss the main advantages provided by these applications

Cerebral metabolic effects of strict versus conventional glycaemic targets following severe traumatic brain injury.

Optimal glycaemic targets for patients with severe traumatic brain injury remain unclear. The primary objective of this microdialysis study was to compare cerebral metabolism between strict and conventional glycaemic control. Methods We performed a prospective single-centre randomised controlled within-subject crossover study in 20 adult patients admitted to an academic neurointensive care unit with severe traumatic brain injury. Patients underwent randomised, consecutive 24-hour periods of strict (4 - 7 mmol/L; 72 - 126 mg/dL) and conventional (<10 mmol/L; 180 mg/dL) glycaemic control with microdialysis measurements performed hourly. The first 12 hours of each study period was designated as ‘wash-out’ with the subsequent 12 hours being the period of interest. Results Cerebral glucose was lower during strict glycaemia compared to conventional control (1.05 (0.58, 1.51) mmol/L versus 1.28 (0.81, 1.74) mmol/L; P = 0.03) as was lactate (3.07 (2.44, 3.70) versus 3.56 (2.81, 4.30); P <0.001). There were no significant differences in pyruvate or the lactate/pyruvate ratio between treatment phases. Strict glycaemia increased the frequency of low cerebral glucose (<0.8 mmol/L), OR 1.91, 95% CI 1.01 – 3.65; P <0.05, however, there were no differences in the frequency of critically low glucose (<0.2 mmol/L) or critically elevated lactate/pyruvate ratio between phases. Conclusions Compared with conventional glycaemic targets, strict blood glucose control was associated with lower mean levels of cerebral glucose and an increased frequency of abnormally low glucose levels. These data support conventional glycaemic targets following TBI