Results 111 to 120 of about 4,314 (241)

Use of Pressure Measurements to Determine Effectiveness of Turbine Rim Seals

Volume 5C: Heat Transfer, 2014
The ingress of hot gas through the rim seal of a gas turbine depends on the pressure difference between the mainstream flow in the turbine annulus and that in the wheel-space radially inward of the rim seal. In this paper, a previously published orifice model is modified so that the sealing effectiveness εc determined from concentration measurements in
Owen, J M, Wu, K, Scobie, J A, Sangan, C M, Cho, G, Lock, G D   +5 more
openaire   +2 more sources

Nanoscale space weathering features in mature lunar soil revealed by TEM and APT

Meteoritics &Planetary Science, EarlyView.
Abstract Space weathering significantly alters the optical, chemical, and structural properties of lunar regolith at micro‐ and nanoscales; yet detailed nanoscale variability within individual soils remains underexplored. Here we apply transmission electron microscopy (TEM) and atom probe tomography to four mineral grains (olivine, ilmenite, and two ...
Jennika Greer, Alexander M. Kling, Luke Daly, Dieter Isheim, David N. Seidman, Michelle S. Thompson, Philipp R. Heck   +6 more
wiley   +1 more source

Window prototype investigations:Rim seal construction [PDF]

, 1996
This chapter describes the requirements to be set for a proper rim seal construction for aerogel glazings and includes theoretically parameter analyses of thermal bridge effect, water vapour diffusion and gas diffusion through the rim seal.
Schultz, Jørgen Munthe
core  

Opening the black box: in situ imaging of arbuscular mycorrhizal fungal structures in soil using synchrotron‐based micro‐CT

New Phytologist, EarlyView.
Summary Arbuscular mycorrhizal fungi (AMF) contribute to plant nutrient and water uptake via their extraradical hyphal networks. However, in situ methodologies to quantify architectural and morphological traits of these networks in soil are largely lacking, limiting our understanding of AMF‐mediated resource transport.
Henri M. Braunmiller, Michael Bitterlich, Nicolai Koebernick, Eva Jacob, Anna S. Heck, Andrea Schnepf, Johanna Pausch, Jussi‐Petteri Suuronen, Bernhard Hesse, Sylvain Delzon, Jonathan Perrin, Andrew King, Jan Jansa, Mutez A. Ahmed   +13 more
wiley   +1 more source

Morphology of powerful suction organs from blepharicerid larvae living in raging torrents

BMC Zoology, 2019
Background Suction organs provide powerful yet dynamic attachments for many aquatic animals, including octopus, squid, remora, and clingfish. While the functional morphology of suction organs from some cephalopods and fishes has been investigated in ...
Victor Kang, Richard Johnston, Thomas van de Kamp, Tomáš Faragó, Walter Federle   +4 more
doaj   +1 more source

The High‐Intensity Zone: A Dynamic Inflammatory Hub in Lumbar Disc Degeneration

Orthopaedic Surgery, EarlyView.
The HIZ, a dynamic inflammatory hub in lumbar disc degeneration, links inflammation‐degeneration‐pain; integrating advanced diagnostics and targeted therapies offers precise management for discogenic low back pain. ABSTRACT The lumbar intervertebral disc high‐intensity zone (HIZ), a focal hyperintensity within the annulus fibrosus on T2‐weighted ...
Qi Zhou, Jingyi Cai, Weijian Zhu, Sirui Zhou, Liling Zhou, Yiyao Pei, Gang Wu   +6 more
wiley   +1 more source

Aerodynamic performance of turbine rim sealing flows

, 2020
An investigation of the hot gas ingestion phenomenon in the Oxford Rotor Facility ex- amined rotor disc rotation, mainstream pressure asymmetries and unsteady structures in the cavity as main drivers. The facility underwent major modifications to allow different annulus flow configurations, higher resolution in the low and high bandwidth pressure ...
openaire   +2 more sources

Diagenetic controls on porosity evolution and pore type organisation in microporous carbonate rocks: Evidence for mesogenetic porosity formation

Sedimentology, EarlyView.
ABSTRACT Microporous carbonate rocks typically record complex diagenetic histories driven by microbial activity and fluid interactions within multiple diagenetic environments. The relative roles of meteoric and burial diagenetic processes in pore evolution remain debated, particularly within Cretaceous carbonate systems of the Middle East, as does the ...
Hugues Bitault, Cathy Hollis, Alain Tonetto, Pierre Deschamps, Philippe Léonide, François Fournier   +5 more
wiley   +1 more source

Cytologic, Clinicopathologic, and Histologic Findings in a Dog with a Gallbladder Neuroendocrine Carcinoma and Multiple Endocrinopathies

Veterinary Clinical Pathology, EarlyView.
ABSTRACT A 10‐year‐old spayed female Shih Tzu was evaluated for a gallbladder mass incidentally identified during a diagnostic workup for hyperadrenocorticism and persistent hypercalcemia. Diagnostic imaging revealed a vascularized intraluminal gallbladder mass, and cytologic examination showed cohesive clusters of epithelial cells with distinct ...
Sam Wicker, Alexis Johnson, Shelly Olin, Thomas Bevelock, Constance Fazio, Hiroyuki Mochizuki   +5 more
wiley   +1 more source

A dermatosurgically optimized ear tamponade technique to prevent external auditory canal obstruction – a method for secure closure

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, EarlyView.
Martin Flatz, Sandra Schreiner, Christian Kunte   +2 more
wiley   +1 more source