Results 111 to 120 of about 18,438,198 (314)
The joy of vacuuming? How the user experience affects vacuum cleaner longevity [PDF]
, 2015 An apparent reduction in the average lifetime of vacuum cleaners is explored in this paper in relation to their perceived usability and increasingly frequent product replacement. Motivations for product disposal combine perceived and real product failure
Salvia, G +4 more
core
, 2009 TiZrV nonevaporable getter (NEG) coated vacuum chambers is a new vacuum technology which is already used in many particle accelerators worldwide. This coating is also of interest for heavy-ion accelerator vacuum chambers. Heavy-ion desorption yields from
E. Hedlund +28 more
core +1 more source
The charge class of the vacuum state in a free massless Dirac field theory
, 1985 Description of the (modified) charge class of the vacuum state in a free massless Dirac field theory and proof that it does not contain any non trivial gauge invariant quasifree ...
SCARLATTI SERGIO, SPERA, Mauro
core +1 more source
Advanced Engineering Materials, EarlyView.Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios +5 more
wiley +1 more source
Vacuum road map of N.S.Wales [cartographic material] /
, 1935 Road map of New South Wales. Relief shown by hachures and spot heights.; Includes distance table, traffic hints and tourist information.; Also available in an electronic version via the internet at: http://nla.gov.au/nla.map-vn4670791. Inset: Tweed Heads
Barrass, Clive.
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Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source
Journal of Magnesium and AlloysMagnesium alloys, regarded as the most promising structural materials for lightweight applications, have gained enhanced strength and heat resistance through the addition of rare earth elements, leading to their widespread use in aerospace and defense ...
Meng Wang +9 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares +3 more
wiley +1 more source
Vacuum road map of New South Wales [cartographic material] /
, 1950 Road map of New South Wales showing state highways, main roads and railways.; Inset: Routes - N.S.W to Brisbane.; Includes index of "Principal towns and distances from Sydney..", "What to see in Sydney...." and "Traffic hints".; Also available in an ...
Australian Contract Drafting Co.
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Advanced Engineering Materials, EarlyView.This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil +2 more
wiley +1 more source