Results 71 to 80 of about 249,393 (316)

Evaluating the Utilities of Foundation Models in Single‐Cell Data Analysis

open access: yesAdvanced Science, EarlyView.
This study delivers the first systematic, task‐level evaluation of single‐cell foundation models across eight core analytical tasks. By benchmarking 10 leading models with the scEval framework, it reveals where foundation models truly add value, where task‐specific methods still dominate, and provides concrete, reproducible guidelines to steer the next
Tianyu Liu   +4 more
wiley   +1 more source

Study on Contact Ratio Calculation of Face Gear with Modification based on Gear Tooth Contact Analysis

open access: yesJixie chuandong, 2015
The contact ratio is an important performance index of gear transmission,but there is no computational formula of contact ratio for complex tooth surface transmission,such as face gears.The definition of face gear contact ratio is given,and the method of
Dong Jianxiong, Tang Jinyuan
doaj  

Design of aircraft turbine fan drive gear transmission system [PDF]

open access: yes
The following basic types of gear reduction concepts were studied as being feasible power train systems for a low-bypass-ratio, single-spool, geared turbofan engine for general aircraft use: (1) single-stage external-internal reduction, (2) gears (offset
Dent, E., Hirsch, R. A., Peterson, V. W.
core   +1 more source

On the Origins of Toughness in Corymbia calophylla (Marri Tree) Nuts

open access: yesAdvanced Science, EarlyView.
We uncover the natural toughening mechanisms of the marri nut, including fiber pullout, crack deflection, and a viscoelastic matrix, which enable exceptional energy absorption and ductility comparable to Teflon, with an elastic modulus similar to acrylic.
Wegood M. Awad   +7 more
wiley   +1 more source

基于有限元法的正交面齿轮疲劳特性探究

open access: yesJixie chuandong, 2014
Based on the theory of gear geometry,both tooth face and tooth root equations of the orthogonal face gear are deduced according to tooth profile equation of the cutter conjugated to face gear,the tooth surface and tooth root point-cloud of the orthogonal
黄永荣
doaj  

RDS-21 Face-Gear Surface Durability Tests [PDF]

open access: yes
Experimental fatigue tests were performed to determine the surface durability life of a face gear in mesh with a tapered spur involute pinion. Twenty-four sets of gears were tested at three load levels: 7200, 8185, and 9075 lb-in face gear torque, and ...
Fetty, Jason   +4 more
core   +1 more source

Fluid lubricant system Patent [PDF]

open access: yes, 1968
Lubrication for bearings by capillary action from oil reservoir of porous ...
Belanger, R. J., Heindl, J. C.
core   +1 more source

A Nanoparticle‐Integrated Complete Manufacturing Pipeline of Chemically Engineered Exosomes

open access: yesAdvanced Science, EarlyView.
We report a novel manufacture technology of chemically engineered exosomes. The four steps of manufacturing, i.e., biogenesis, loading, isolation, and storage, are integrated by the use of a nanoparticle. The manufacture technology incorporates three innovative components, i.e., a new nano‐bio effect, a new composite nanoparticle, and a new isolation ...
Xiaowei Wen   +13 more
wiley   +1 more source

Pivotal shock absorbing pad assembly Patent [PDF]

open access: yes, 1965
Pivotal shock absorbing assembly for use as load distributing portion in landing gear systems of space ...
Blumrich, J. F.
core   +1 more source

A Soft Robotic Model for Simulating Heart Valve Disease and Cardiac Interventions

open access: yesAdvanced Science, EarlyView.
This paper introduces a fully synthetic fabrication methodology for a soft robotic, in‐vitro model of the left‐heart, complete with a functioning mitral valve apparatus. With a view towards patient‐specific modeling, we demonstrate physiological flow and pressure waveforms, tunable mitral valve function with clinical imaging compatibility, and its use ...
James Davies   +14 more
wiley   +1 more source

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