Results 11 to 20 of about 201,568 (300)

Linear motor for multi-car elevators, design and position measurement [PDF]

open access: yes, 2010
Multi-car elevator is an emerging technology consisting of two or more elevator cars moving independently in an elevator hoistway, which has become more appealing as building heights increase.
Gurbuz, Cagri   +4 more
core   +2 more sources

Elevating sampling [PDF]

open access: yesLab Chip, 2014
This perspective highlights challenges and opportunities in the collection and preparation of a target from real-world sources for subsequent processing in micro- and nanofluidic systems.
Joseph M, Labuz, Shuichi, Takayama
openaire   +2 more sources

Model and Optimization of the Tether for a Segmented Space Elevator

open access: yesAerospace, 2022
In order to improve the shortcomings of the traditional constant section and gradual section space elevator system, combined with the advantages of constant section and gradual section space elevator system, a model of segmented space elevator system is ...
Shihao Luo   +4 more
doaj   +1 more source

Design and implementation of a linear motor for multi-car elevators [PDF]

open access: yes, 2008
The multi-car elevator system is a revolutionary new technology for high-rise buildings, promising outstanding economic benefits, but also requiring new technology for propulsion, safety and control.
Kazan, Ender   +5 more
core   +2 more sources

Materialism and the Resurrection: Are the Prospects Improving? [PDF]

open access: yes, 2011
In 1999 Dean Zimmerman proposed a "falling elevator model" for a bodily resurrection consistent with materialism. Recently, he has defended the model against objections, and a slightly different version has been defended by Timothy O’Connor and Jonathan ...
Hasker, William
core   +2 more sources

Nonlinear bending and vibration analyses of FG nanobeams considering thermal effects

open access: yesMaterials Research Express, 2020
Nonlinear bending and nonlinear free vibration analysis are presented for FG nanobeams based on physical neutral surface concept and high-order shear deformation beam theory with a von Kármán-type equations and including thermal effects.
Wubin Shan   +3 more
doaj   +1 more source

Addendum to the Inventory of Stored Grain Insects in Michigan [PDF]

open access: yes, 2017
Additional species of stored grain insects have been found in Michigan since the inventory of such pests was published (Ruppel 1977). The additional species were primarily found through a study of insects in county elevators (Russell 1980) and through ...
Ruppel, Robert F
core   +2 more sources

Experimental study on damping characteristics of elevator traction system

open access: yesAdvances in Mechanical Engineering, 2022
An elevator traction system is simplified as a damped vibration system. In order to study the damping characteristics of an elevator traction system, this paper tests the vibration characteristics of a car frame on an in-service elevator with a traction ...
Peng Xu   +6 more
doaj   +1 more source

A dynamic model for elevator operation-induced spread of a respiratory infectious disease in an apartment building

open access: yesHeliyon, 2023
Residents have to use elevators to leave and enter their high-rise apartments frequently. An elevator car can easily spread respiratory infectious diseases, as it has a confined and small space.
Zuiyuan Guo   +5 more
doaj   +1 more source

Automatic navigation of a long range rocket vehicle [PDF]

open access: yes, 1952
The flight of a rocket vehicle in the equatorial plane of a rotating earth is considered with possible disturbances in the atmosphere due to changes in density, in temperature, and in wind speed.
Adamson, T. C.   +2 more
core   +1 more source

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