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eebo-0018

Great Britain --- England --- History --- Seal

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Seals (Numismatics) --- Sceaux --- Evangelische Kirche im Rheinland --- Seal.

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This multiple authors volume, edited by Roksana Chowaniec and Marta Fituła, describes the results of interdisciplinary archaeological research and excavations conducted between 2009 and 2020 within the zone of the residential area of the Graeco-Roman town Akrai/Acrae and its vicinity. The town, situated in the central part of south-eastern Sicily, happens to be a significant place on the archaeological map of the island and the whole Mediterranean. The recent studies (2009–2020) unearthed the households, whose original basic plans were created by the end of the 3rd century BC. The construction effort seems to have taken place during the final phase of rule of the Syracusan tyrant, Hiero II and/or at the beginning of the formal Roman administration (after 212 BC). The new stage of excavations (2011–2017) yielded archaeological material dated from the end of 3rd century BC up to the beginning of 8th century AD, which provides a vivid picture of the inhabitants’ life. Also the field survey and non invasive investigations brought information about vicinity of town.The book consists of seventeenth chapters covering history of south-eastern Sicily, mostly in the Roman Imperial period and Late Antiquity, various examples of elaboration of material culture, and multidisciplinary studies outlining the methodology of research. This volume is focused around historical and archaeological artefacts being a determinant of all cultural processes which occurred in Antiquity

Excavations (Archaeology) --- Pottery, Ancient --- Lamps, Ancient --- Sicily (Italy) --- Sicily (Italy) --- Akrai (Extinct city) --- Seal. --- Antiquities

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A heat pump system can produce an amount of heat energy that is greater than the amount of energy used to run the heat pump system. Thus, a heat pump system is considered to be a machine system that can use energies efficiently, as is the load leveling air-conditioning system utilizing unutilized energies at high levels. Adaptations of gas turbines for industrial, utility, and marine-propulsion applications have long been accepted as means for generating power with high efficiency and ease of maintenance. Cogeneration with gas turbine is frequently defined as the sequential production of useful thermal energy and shaft power from a single energy source. For applications that generate electricity, the power can either be used internally or supplied to the utility grid. This Special Issue intends to provide an overviews of the existing knowledge related with various aspects of “Small-Scale Energy Systems with Gas Turbines and Heat Pumps”, and contributions on, but not limited to the following subjects were encouraged: wake of stator vane to improve sealing effectiveness; gas turbine cycle with external combustion chamber for prosumer and distributed energy systems; computational simulation of gas turbine engine operating with different blends of biodiesel; experimental methodology and facility for the engine performance and emissions evaluation using jet and biodiesel blends; experimental analysis of an air heat pump for heating service; hybrid fuel cell-Brayton cycle for combined heat and power; design analysis of micro gas turbines in closed cycles. Seven papers were published in the Special Issue out of a total of 12 submitted.

History of engineering & technology --- wave-shaped rim seal --- sealing effectiveness --- radial seal --- gas turbine --- computational fluid dynamics --- biofuels --- sustainable power generation --- microturbines --- gas turbine engine --- two-spool turboprop engine --- PT6A engine --- aero-thermal model --- Matlab-Simulink --- bio-diesel --- start-up transient --- biodiesel --- turbojet --- energy performance --- emissions --- aviation --- hardware-in-the-loop --- heat pumps --- dynamic simulation --- experimental performances --- control strategy --- partial loads --- on-off cycles --- building dynamics --- building-heating system coupling --- supercritical CO2 --- combined heat and power --- flame-assisted fuel cells --- carbon sequestration --- solid oxide fuel cell --- closed cycle gas turbine --- different working fluids --- thermodynamic analysis --- design of turbines --- design of compressors

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The main purpose of this Special Issue of “Advances in Fluid Power Systems” was to present new scientific work in the field of fluid power systems for hydraulic and pneumatic control of machines and devices used in various industries. Advances in fluid power systems are leading to the creation of new smart devices that can replace tried-and-true solutions from the past. The development work of authors from various research centres has been published. This Special Issue focuses on recent advances and smart solutions for fluid power systems in a wide range of topics, including: • Fluid power for IoT and Industry 4.0: smart fluid power technology, wireless 5G connectivity in fluid power, smart components, and sensors.• Fluid power in the renewable energy sector: hydraulic drivetrains for wind power and for wave and marine current power, and hydraulic systems for solar power. • Hybrid fluid power: hybrid transmissions, energy recovery and accumulation, and energy efficiency of hybrid drives.• Industrial and mobile fluid power: industrial fluid power solutions, mobile fluid power solutions, eand nergy efficiency solutions for fluid power systems.• Environmental aspects of fluid power: hydraulic water control technology, noise and vibration of fluid power components, safety, reliability, fault analysis, and diagnosis of fluid power systems.• Fluid power and mechatronic systems: servo-drive control systems, fluid power drives in manipulators and robots, and fluid power in autonomous solutions.

Technology: general issues --- History of engineering & technology --- Mechanical engineering & materials --- CFD analysis --- directional control valve --- poppet valve --- flow resistance --- pressure loss reduction --- mechanical seal --- non-contacting face seal --- heat transfer --- thermal analysis --- aggressive driving --- hybrid electric vehicle --- driver behavior --- pneumatics --- hybrid systems --- fluid power --- air expansion --- noise reduction --- SPL measurement --- hydraulic motor --- effective absorbency --- theoretical working volume --- actual working volume --- volumetric efficiency --- mechanical efficiency --- gyroscope system --- sensitivity --- optimal regulator --- quadcopter --- FMEA --- failure analysis --- matrix FMEA --- vane pump --- simulation --- mechatronics --- control systems --- guided missile --- flight dynamics --- LQR control --- Kalman filter --- electronic oxygen regulator (EOR) --- pressure control --- disturbance observer --- sensitivity function --- frequency domain analysis --- molten salt reactor plant --- nonlinear dynamic model --- control system design --- transient characteristics analysis --- normal and accident conditions --- k pressure losses --- satellite motor --- water --- oil --- CFD calculation --- internal channels in motor --- pressure efficiency --- risk analysis --- fluid power systems --- small module dual fluid reactor --- delayed neutron precursor drifting --- load regulation --- uncertainty-based optimization --- particle swarm optimization --- uncertainty and sensitivity analysis --- n/a