Results 71 to 80 of about 263,550 (314)

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Gas industry.

open access: yes, 1922
Title from cover.Mode of access: Internet.Absorbed in 1927 by: American gas ...

core  

Issues in formulating natural gas benchmark prices in China

open access: yes, 2017
© 2017, Natural Gas Industry Journal Agency. All right reserved. The oil indexed pricing mechanisms for natural gas and LNG in Asia markets, although successful until 1990s, are general considering to be no longer appropriate, including weak relationship
Shi, X
core   +1 more source

COMPARISON OF THE EFFICIENCY OF VARIOUS GAS INDUSTRY SCHEMES BY THE MATHEMATICAL MODELING

open access: yesВестник университета, 2019
A quantitative comparison of the optimal characteristics of two schemes of construction of the gas industry of the national economy, using mathematical modeling – a scheme with full vertical integration of the industry and a scheme with a vertical ...
M. Kuternin
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

The Gas Utility View of Industrial Energy Conservation

open access: yes, 1980
The gas industry fostered more efficient energy utilization long before the idea of energy conservation became fashionable. It became apparent in the late '60's that misguided Federal Legislation was discouraging necessary search for new gas supplies and
Loberg, T. J.
core  

The Impact of Different Clay Mineral Types on the Irreducible Water Saturation in Tight Sandstone Reservoirs: A Case Study of the Lower Shihezi Formation in Hangjinqi Area, Ordos Basin

open access: yesYankuang ceshi
The type and content of clay minerals in tight sandstone reservoirs of the He-1 member in the Jin-30 well area of Hangjinqi in the northern margin of the Ordos Basin have a significant effect on irreducible water saturation.
Lixin WANG   +6 more
doaj   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm   +3 more
wiley   +1 more source

Junkers Type Gas Calorimeter & Burner

open access: yes, 1910
This continuous flow gas calorimeter is of the Junkers 1209 type. The burning of the gas in a standard burner heats a stream of water from a measured initial temperature to a measured final temperature.
Rosa, Edward B. (Edward Bennett), 1861-1921 ; Mueller, Eugene Frederick; Waidner, Charles William
core  

A Multi-Scale Object Detection Network with Integrated Spatial-Channel Collaborative Attention for Remote Sensing Images

open access: yesSensors
In remote sensing object detection, current models typically employ feature extraction modules and attention mechanisms to tackle issues such as significant scale variations among targets, cluttered backgrounds, and the subtle characteristics of small ...
Lijun Ma   +7 more
doaj   +1 more source

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