Results 141 to 150 of about 46,952 (306)

High Performance Turboalternator and Associated Hardware. 1 - Design of Turboalternator [PDF]

open access: yes
Performance of two stage axial flow turbogenerator with gas bearing rotor support ...
Cohen, R., Gilroy, W. K., Spencer, W. B.
core   +1 more source

Beyond the chaos: How architecture structures tumour biology

open access: yesThe FEBS Journal, EarlyView.
Tissue architecture shapes tumour initiation and progression through multiple interconnected layers continuously remodelled over time. This review outlines how physical forces, biochemical cues, cellular niches and systemic influences contribute to tumour evolution.
Lea Dörner   +3 more
wiley   +1 more source

Numerical Modeling of Hydrogen‐Assisted Cracking With Phase Field Regularized Cohesive Zone Model and Penalty‐Based Moving Hydrogen Boundary Condition

open access: yesFatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT The degradation of metallic materials due to hydrogen embrittlement (HE) poses critical challenges for structural reliability. Phase‐field models offer an energy‐based approach that does not require predefined crack paths and automatically determines crack initiation, growth, and coalescence.
Shaymaa Merheb   +7 more
wiley   +1 more source

Overview of free-piston Stirling technology at the NASA Lewis Research Center [PDF]

open access: yes, 1985
An overview of the National Aeronautics and Space Administration (NASA) Lewis Research Center (Lewis) free-piston Stirling engine activities is presented.
Slaby, J. G.
core   +1 more source

The physiological response of juvenile diploid and triploid Arctic charr Salvelinus alpinus to exhaustive exercise

open access: yesJournal of Fish Biology, EarlyView.
Abstract Triploidy is an effective tool for producing sterile fishes but often results in impaired performance in commercial aquaculture. In light of this, our study compared the physiological response to exhaustive exercise in juvenile diploid and triploid Arctic charr Salvelinus alpinus, a polar species with great potential for aquaculture.
John D. Clark, Tillmann J. Benfey
wiley   +1 more source

Small, high-speed bearing technology for cryogenic turbo-pumps [PDF]

open access: yes
The design of 20-mm bore ball bearings is described for cryogenic turbo-machinery applications, operating up to speeds of 120,000 rpm. A special section is included on the design of hybrid bearings.
Eusepi, M. W.   +2 more
core   +1 more source

Anatomy of spinal CSF loss in the American alligator (Alligator mississippiensis)

open access: yesJournal of Anatomy, Volume 246, Issue 4, Page 575-584, April 2025.
India ink introduced into the cranial cerebrospinal fluid (CSF) compartment of Alligator diffuses along the spinal cord and exits the spinal compartment using perineural flow, resulting in a prominent “ink cuff” forming at the base of the spinal nerve. In Alligator, the region of the ink cuff is drained by a small lymphatic vessel.
Hadyn DeLeeuw   +5 more
wiley   +1 more source

Programmatic status of NASA's CSTI high capacity power Stirling space power converter program [PDF]

open access: yes
An overview is presented of the NASA Lewis Research Center Free-Piston Stirling Space Power Converter Technology Development Program. This work is being conducted under NASA's Civil Space Technology Initiative (CSTI).
Dudenhoefer, James E.
core   +1 more source

Psychogenic polydipsia in dogs – a review of pathogenesis, diagnosis and treatment

open access: yesJournal of Small Animal Practice, EarlyView.
Polyuria and polydipsia represent a common clinical presentation in dogs and may result from numerous disorders affecting different body systems. Compulsive water consumption is characteristic of psychogenic polydipsia, a primary polydipsia disorder rooted in neurologic, behavioural or environmental factors.
G. Pavlovsky
wiley   +1 more source

Evaluation of a series hybrid thrust bearing at DN values to three million. 2: Fabrication and testing [PDF]

open access: yes
Results of tests made to determine the experimental performance of a series hybrid bearing are reported. The bearing consists of a 150 mm ball bearing and a centrifugally actuated, conical, fluid film bearing fitting an envelope with an outer radius of ...
Eusepi, M., Winn, L. W.
core   +1 more source

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