Topology Maintenance Protocols (TMPs) are key for operating Wireless Sensor Networks (WSNs). Their adoption serves a few goals, such as: to save energy, to avoid collisions in communications, and to have an adequate number of nodes monitoring the environment—by alternating duty cycles with sleep cycles on the sensor nodes. While effectiveness of TMPs protocols is widely addressed, security is a...

Sustainability is becoming a central pillar of manufacturing and Additive Manufacturing (AM) processes, thanks to their potentialities, seem open new path reduce the environmental footprint. However, surface finishing AM parts hardly ever adequate for high performances applications so post-process treatments are required. Thus, assessment sustainability should inevitably consider both steps. In...

Cardiotonic agents influence myocardial energy consumption by vasodilation, which may reduce energy demand, and by inotropism, which may increase it. To distinguish between the two effects, myocardial oxygen consumption must be analyzed in relation to its hemodynamic determinants. The coupling of myocardial oxygen consumption with its determinants was investigated in 22 patients with idiopathic...

In this computational research, the separate and simultaneous impacts of diesel direct injection timing, fuel spraying cone angle, and hydrogen gas addition on combustion characteristics, output emissions, and performance in a single-cylinder direct injection diesel engine was studied. In order to conduct the simulations, valid and reliable models for combustion, break-up, and for turbulence wa...

According to the energy crisis in the world, optimization of energy consumption is indispensable. Technological advances in constructions and application of renewable energy resources demand saving energy. Atrium, as one of the construction elements, catches sufficient daylight and acts as a passive solar element and results in a decline of energy consumption. This research seeks to evalu...

The demand for green hydrogen is growing as the increasing production of pure can no longer be based on fossil hydrocarbons. As water electrolysis would move from niche to a significant consumer emission-free electricity, efficiency electrolytic gas production, lifetime systems, and balance in electricity grid become essential. operational investment costs an industrial-scale alkaline electroly...

Abstract This experimental study investigates the effects of process parameters for 3D printing polylactic acid (PLA) samples on both mechanical properties obtained and energy consumption in fused deposition modelling (FDM) process. The explained activities provide an in-depth evaluation all strategies adopted different temperatures scan speed strategies. results, extracted tensile strength, ul...

background human telomerase reverse transcriptase (htert) has become an ideal target for development of anticancer therapy. small interfering rnas (sirnas) are very powerful reagents for gene silencing and show promise for cancer gene therapy. however, only a small number of sirnas have been demonstrated to be effective. for gene therapy targeting htert, it is essential to develop a robust syst...

In isolated communities where potable water sources as well as energy grids are limited or nonexistent, treating brackish groundwater aquifers with small-scale desalination systems is an interesting and sometimes viable alternative to existing water infrastructures. With regards to the performance of intermittently operated desalination systems only very limited experience exists, both with reg...

This paper presents the analytical investigation of a novel system for combined Dew Point Cooling and Water Recovery (DPC-WR system). The operating principle presented is to utilize dew point cooling phenomenon implemented in two stages order obtain both air water recovery. performance described by different indicators, including coefficient (COP), gained output ratio (GOR), energy utilization ...