Results 111 to 120 of about 280,755 (310)

Developing a universal tunnel span classification from global tunnel databases

open access: yesDeep Underground Science and Engineering, EarlyView.
A universal tunnel span classification system is introduced that incorporates tunnel span, cross‐sectional area, typical tunnel types, and intended uses. Representative flatness ratio values are also provided for each span class. The classification is derived from a comprehensive database of 450 tunnel profiles from 47 countries.
Simon Heru Prassetyo   +8 more
wiley   +1 more source

Artesanos y mecánicos Procesos de precarización, diversificación y trasformación del mercado laboral madrileño (1880-1930)

open access: yesSociología del Trabajo, 2017
El presente trabajo tiene por objetivo analizar los procesos de transformación del mercado laboral madrileño durante la Restauración. Se trata de una etapa de transición entre una economía tardo-gremial y una economía de servicios.
Fernando Vicente Albarrán
doaj  

Suggestions and Applications for Evaluating Seismic Functionality for Railway Infrastructure Network Based on Fragility Curve

open access: yesApplied Sciences
This study proposes a novel model to quantitatively evaluate functionality loss in railway network systems during earthquakes and assesses its applicability to a hypothetical railway network system.
Mintaek Yoo   +3 more
doaj   +1 more source

The Daily railway age.

open access: yes
From 18 to 1902 inclusive, the conventions were held in June.The convention daily was issued for the first time in 1887 by the publishers of the Northwestern railroader.Issued daily during the annual convention week of the American Railway Master ...
Master Car-Builders' Association.   +1 more
core  

Proposed Machine Blacksmith Shop at Waynoka, Oklahoma for A. T. & S. F. Railway Company

open access: yes, 1922
Architectural drawing of the proposed Machine and Blacksmith Shop for the Atchison, Topeka and Santa Fe Railway.
Atchison, Topeka and Santa Fe Railway Company
core  

Damage Characteristics and Stress Distribution Law of Overburden Rock in Multiple Mining of Close Coal Seams

open access: yesEnergy Science &Engineering, EarlyView.
This study on close coal seams shows that multi‐seam mining increases the height of the fractured zone from approximately 26 m (single upper‐seam mining) to about 49 m. When the lower seam is mined after the extraction of the upper seam, the heights of both the caved zone and the fractured zone increase by approximately two times.
Xiaoyu Wu   +4 more
wiley   +1 more source

Texas City Terminal Railway Company Booklet [PDF]

open access: yes, 2016
A Texas City Terminal Railway Company booklet from September 1924 highlighting terminals and warehouses located in Texas City, TX, including maps and ...
Texas City Terminal Railway Company
core   +1 more source

Health needs assessment: a study of a district in Tehran, Iran

open access: yesPayesh, 2004
Objective(s): To determine health needs of a population living in the Tehranchr('39')s 17th municipal district and identify appropriate strategies to deal with them. Methods: This research included 2 phases: the first phase was a qualitative study with 2
Jahangiri K   +7 more
doaj  

Investigation method for relationship between weight and stiffness on double skin carbody made of aluminum alloy for railway

open access: yesNihon Kikai Gakkai ronbunshu
Railway vehicles are required to reduce environmental impact with acceptable riding comfort. For this purpose, it is necessary to satisfy the conflicting issues of weight reduction and maintaining proper stiffness.
Takeshi KAWASAKI
doaj   +1 more source

A large railway cutting and newly laid track on the Mount Lyell Railway in Tasmania.

open access: yes, 2016
This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/227291A ...
Mount Lyell Mining And Railway Co. Ltd
core  

Home - About - Disclaimer - Privacy