Results 101 to 110 of about 4,317 (244)

Graft Height and Labral Integrity as Key Determinants of Suction Seal Restoration in Hip Labral Augmentation: Findings From an Ovine Model

Orthopaedic Journal of Sports Medicine
Background: The acetabular labrum plays a critical role in maintaining the hip suction seal, joint stability, and load distribution. When primary repair is not feasible, augmentation is preferred if the chondrolabral junction can be preserved, whereas ...
Selahaddin Aydemir MD, Joseph Featherall MD, Mazen Mohamed Ibrahim MD, Reşit Buğra Husemoğlu PhD, Eren Akın MD, Ümit Ali Karabağ MD, Onur Hapa MD   +6 more
doaj   +1 more source

Unsteady interaction between annulus and turbine rim seal flows

, 2012
In core gas turbines relatively cold air is purged through the hub gap between the stator and rotor in order to seal the disk space against flow ingestion from the main annulus.
Hodson, H, Chilla, M, Newman, D, ,
core  

Prosthetic designs for complete dentures manufactured using contemporary 3D printing techniques: A case series with clinical, design, and laboratory considerations

Journal of Prosthodontics, EarlyView.
Abstract Advancements in additive manufacturing have enabled the precise fabrication of complete dentures using modern photopolymers and diverse 3D printing techniques. These innovations have transformed removable prosthodontics by allowing clinicians to design and manufacture highly customized prostheses to manage difficult anatomical and esthetic ...
Francisco X. Azpiazu‐Flores, Abdullah M. Aldosari, Paola C. Saponaro, Kedith Sawangsri, Wei‐Shao Lin   +4 more
wiley   +1 more source

Analysis of the Behaviour of the Floating Roof in a Cylindrical Storage Tank Subjected to Seismic Excitation for the Mitigation of Fire Risk

Chemical Engineering Transactions, 2023
Natural Hazard triggering Technological Disasters (NaTech) are accidents resulting from natural hazards, such as earthquakes, interacting with industrial risks.
Michela Salimbeni, Maurizio De Angelis, Mariano Ciucci   +2 more
doaj  

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

Influence of Rim Seal Purge Flow on the Performance of an Endwall-Profiled Axial Turbine

, 2010
Nonaxisymmetric endwall profiling is a promising method to reduce secondary losses in axial turbines. However, in high-pressure turbines, a small amount of air is ejected at the hub rim seal to prevent the ingestion of hot gases into the cavity between ...
P. Schuepbach, M. G. Rose, R. S. Abhari, J. Gier   +3 more
core   +1 more source

A geophysical investigation of the Roter Kamm impact crater, Namibia

Meteoritics &Planetary Science, EarlyView.
Abstract The Roter Kamm impact crater is located in the southern Namib Desert. The crater has a diameter of 2.5 km and belongs to the category of simple, bowl‐shaped impact craters, with an elevated rim of fractured target rock. The crater's interior is completely buried beneath sediments, preventing extensive surface investigations of the bedrock ...
Hannah Nienhaus, Pritam Yogeshwar, Wiebke Mörbe, Bülent Tezkan, Yajun Liu, Bufelo Lushetile, Martin Melles   +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

Interaction of Rim Seal and Annulus Flows in an Axial Flow Turbine

Volume 5: Turbo Expo 2003, Parts A and B, 2003
A combined computational fluid dynamics (CFD) and experimental study of interaction of main gas path and rim sealing flow is reported. The experiments were conducted on a two stage axial turbine and included pressure measurements for the cavity formed between the stage 2 rotor disc and the upstream diaphragm for two values of the diaphragm-to-rotor ...
Cao, C, Chew, John, Millington, PR, Hogg, SI   +3 more
openaire   +5 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