Results 71 to 80 of about 178,801 (301)

The Impact of Access to Rail Transportation on Agricultural Improvement: The American Midwest as a Test Case, 1850-1860

open access: yesJournal of Transport and Land Use, 2011
During the 1850s, land in U.S. farms increased by more than a third—100 million acres—and almost 50 million acres, an area almost equal to that of the states of Indiana and Ohio combined, were converted from their raw, natural state into productive ...
Jeremy Atack, Robert A Margo
doaj   +1 more source

End of the line: Railroads in Chile [PDF]

open access: yes
Between 1860 and 1950, railroads in Chile were synonym of modernization, integration, and economic development. By the 1970s railroads were bankrupt and socially discredited, surviving out of government subsidies.
Raimundo Soto
core  

Digital documentation of railway tunnel inspection in Austria

open access: yesCivil Engineering Design, Volume 7, Issue 1, Page 3-8, March 2025.
Abstract Infrastructure, especially railway tunnels, require continuous inspection to ensure their safety. Furthermore, the detection of damages at an early stage can improve their service life. These tasks represent a major challenge for those involved and the tunnel down time is a disruption in operation.
Matthias J. Rebhan   +4 more
wiley   +1 more source

Special Libraries, January 1915 [PDF]

open access: yes, 1915
Volume 6, Issue 1https://scholarworks.sjsu.edu/sla_sl_1915/1000/thumbnail ...
Special Libraries Association
core   +1 more source

Investigating the Cytoskeleton of DRGs Using Cryo‐Electron Microscopy and Deep Learning

open access: yesCytoskeleton, EarlyView.
ABSTRACT We describe a method for determining the ultrastructural organization of axons and varicosities of cultured dorsal root ganglion (DRG) neurons using cryogenic electron microscopy (cryo‐EM). Cryo‐EM reveals the dimensions, proximity, and overall organization of biological specimens in a near‐native state, avoiding artifacts of fixation and ...
M. Neal Waxham   +3 more
wiley   +1 more source

Demiryolunun Stratejik Önemi ve Erken Cumhuriyet Döneminde Demiryolu Siyaseti

open access: yesVakanüvis Uluslararası Tarih Araştırmaları Dergisi, 2016
Bu çalışmada, demiryollarının stratejik açıdan önemi ve Geç Osmanlı-Erken Cumhuriyet dönemlerinde demiryollarının geçirdiği evreler incelenmiştir. Tekerleğin icadı ile başlayan süreç, atlı arabalarla devam etmiş ve 17. yüzyıl sonrasında buharlı makinenin
Mustafa Yücel, Mustafa Taşar
doaj   +1 more source

An Estimation of the Heat Load Distribution on the Divertor Target Using the CSD Model

open access: yesContributions to Plasma Physics, EarlyView.
ABSTRACT Handling the heat load on the divertor target is a critical issue in the design of fusion reactors. Estimating the heat load, supported by computationally efficient simulations with varying design parameters, provides valuable input to high‐level design discussions and the development of design guidelines.
Kazuhiro Yamada   +4 more
wiley   +1 more source

Creep properties and constitutive model of diabase in deep water conveyance tunnels

open access: yesDeep Underground Science and Engineering, EarlyView.
The axial and lateral creep characteristics of diabase were analyzed based on compression creep tests. The nonlinear viscoelastic‐plastic model capable of describing the whole creep process was established based on the fractional derivative and damage theories.
Zhigang Tao   +5 more
wiley   +1 more source

Desindustrialization in the metropolis of São Paulo - Água Branca case

open access: yesGEOUSP: Espaço e Tempo, 2001
This article tries to discuss some subjects on the theme of desindustrialization in the metropolis of São Paulo. Desindustrialization is a recent process and its understanding is linked so to an integrated group of elements related to changes in the ...
Aluísio Wellichan Ramos
doaj   +1 more source

Raise the roof: Tunnel clearance could open access to Southern West Virginia [PDF]

open access: yes
Railroads ; Federal Reserve District ...
Betty Joyce Nash
core  

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