Results 111 to 120 of about 124,470 (351)
Impact of the technical condition of main pumps on fuel consumption in a hydraulic excavator
Горные науки и технологииDuring the operation of hydraulic excavators, the technical condition of pumps deteriorates due to wear, leading to increased internal clearances, fluid leakage, a reduction in volumetric efficiency, and higher energy losses, ultimately resulting in ...
Maxim G. Rakhutin +3 more
doaj +1 more source
Advanced Materials, EarlyView.Glass, historically valued for its purity and durability, has long inspired artists and societies. This article introduces the concept of “Archeo‐Inspiration”, drawing on cultural and historical contexts of glass to guide future material innovations.
Eva von Contzen +3 more
wiley +1 more source
Morphologische Entwicklung des Ucayali in Peru ohne menschliche Einflüsse [PDF]
, 2013 The Ucayali River originates in the high Andean Mountains near the city of Cusco in Peru. After about 1,600 km, it joins with the Marañón River. Both the Ucayali River and the Marañón River are sources of the Amazon.
Alvarado-Ancieta, Cesar Adolfo +1 more
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Large-eddy simulations of turbulent flow for grid-to-rod fretting in nuclear reactors
, 2013 The grid-to-rod fretting (GTRF) problem in pressurized water reactors is a flow-induced vibration problem that results in wear and failure of the fuel rods in nuclear assemblies.
Bakosi, J. +4 more
core +1 more source
Porous Iridium Oxide Inverse Opal Catalysts Enable Efficient PEM Water Electrolysis
Advanced Materials, EarlyView.Porous iridium‐based inverse opal (IrOx‐IO) structures are introduced as high‐performance, unsupported PEM‐WE anode catalysts. Their electrochemical behavior is analyzed through porosity/surface area tuning, voltage breakdown, and circuit modeling.
Sebastian Möhle +4 more
wiley +1 more source
AfriquesThis paper compares two fields of analysis: on the one hand, hydrosociology, theorized by geographers and anthropologists, which conceptualizes the uses and landscapes of water as a reflection of the social organization of the group; on the other hand ...
Chloé Capel
doaj +1 more source
Evaluation of baffles for optimisation of waste stabilisation ponds : a thesis presented in partial fulfilment of the requirements for the degree of Master of Engineering in Environmental Engineering at Massey University, Palmerston North, New Zealand [PDF]
, 2003 Waste stabilisation ponds are a common form of treating wastewater throughout the world and they provide a reliable, low-cost, low-maintenance treatment system.
Harrison, Jill
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Advanced Materials, EarlyView.A 3D‐printed BSA–PEGDA bilayer actuator performs biochemical logic, bending autonomously in acid and releasing its drug payload only when both acid and pepsin are present. This dual‐stage, enzyme‐gated mechanism enables autonomous catch‐and‐release motion and controlled gastric drug delivery, representing a programmable soft material powered by ...
Yuchen Liu +3 more
wiley +1 more source
Mechanical Engineering JournalMechanical components must be designed to prevent wear and seizure. In hydraulic piston pumps, abnormal friction between the piston bore and cylinder as well as bearings can cause failure or breakdown.
Shoichi TAKEMOTO +3 more
doaj +1 more source
Tidal hydrology in Pegasus Bay [PDF]
, 1967 Changes in the geomorphology of the coastal plain river mouths of Pegasus Bay over the last 100 years are considered. Comment is also made on estuarine sediment and flow, the difficulty of measuring these two quantities and the need to treat the ...
Blake, G.J.
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