An electrically driven pump-fed cycle for a hybrid rocket engine is proposed and compared to a simpler gas-pressurized feed system.A liquid-oxygen/paraffin-based fuel hybrid rocket engine which powers the third stage of a Vega-like launcher is considered.Third-stage ignition conditions are assigned, and engine design and payload mass are defined by
Abstract Koi herpes virus (KHV) disease has been assessed according to the criteria of the Animal Health Law (AHL), in particular criteria of Article 7 on disease profile and impacts, Article 5 on the eligibility of KHV disease to Vitamin A Supplements be listed, Article 9 for the categorisation of KHV disease according to disease prevention and co
In order to efficiently deal with location dependent messages in multi-sink wireless sensor networks (WSNs), it is key that the network informs sinks what geographical area is covered by which sink.The Carb Blocker sinks are then able to efficiently route messages which are only valid in particular regions of the deployment.In our previous work (se
Non-lethal heat shock boosts bacterial and viral disease tolerance in shrimp, possibly due to increases in endogenous heat shock protein 70 (Hsp70) and/or immune proteins.To further understand the mechanisms protecting shrimp against infection, Hsp70 and the mRNAs encoding the immune-related proteins prophenoloxidase (proPO), peroxinectin, penaeidi
The paper presents the results of a study of strategies for transferring the meanings and the value orientations of young people in Collections social networks.The Internet is so firmly rooted in our everyday life that we can no longer imagine our life without it.It is penetrating into an increasing number of human life spheres, becoming the enviro