Results 11 to 20 of about 708,954 (300)

A mass-loss rate determination for zeta Puppis from the quantitative analysis of X-ray emission line profiles [PDF]

open access: yes, 2009
We fit every emission line in the high-resolution Chandra grating spectrum of zeta Pup with an empirical line profile model that accounts for the effects of Doppler broadening and attenuation by the bulk wind.
Asplund   +64 more
core   +7 more sources

Optimization of plasma spray process variables to attain the minimum porosity and maximum hardness of the LZ/YSZ thermal barrier coatings utilizing the response surface approach

open access: yesMaterials Research Express, 2022
Lanthanum zirconate (LZ) has emerged as a novel thermal barrier coating (TBC) material because of its higher temperature phase stability, and low sintering ability than the current standard yttria-stabilized zirconia (YSZ).
M Mathanbabu   +3 more
doaj   +1 more source

KONSTANTA ELASTIK PADA POROSITAS HIDROKARBON BATUGAMPING DENGAN KONVERSI DINAMIK KE STATIK

open access: yesRekayasa, 2014
Pengukuran dinamik untuk mendapatkan konstanta elastik dihubungkan dengan besaran petrofisika utamanya porositas dan saturasi air sangat penting untuk penerapan penyebaran adanya reservoar.
Mochammad Ahied
doaj   +1 more source

MOLDING PROCEDURE FOR PERVIOUS CONCRETE SPECIMENS BY DENSITY CONTROL

open access: yesCase Studies in Construction Materials, 2021
Pervious concrete (PC) is a special concrete with the main objective of surface runoff management, due to its hydraulic performance and infiltration capacity. Currently, the standards and guidelines (existing) do not adequately standardize the production
Kathleen Dall Bello De Souza Risson   +5 more
doaj   +1 more source

A study of the porosity of nuclear graphite using small-angle neutron scattering [PDF]

open access: yes, 2013
Small angle neutron scattering (SANS) measures porosity in nuclear graphites, including both open pores, caused by escaping decomposition gases, and internal cracks (in coke particles) generated by anisotropic thermal contraction along the c-direction ...
Bale   +17 more
core   +1 more source

Influence of activators on constitutes of diffusion layer at boronizing pressed samples from iron powder [PDF]

open access: yesHemijska Industrija, 2008
In this paper, results of experimental investigation which contributes to study of quantitative changes of porosity during chemical-thermical process, apropos boronizing of pressed samples from iron powder, with variation of boronizing mixture ...
Požega Emina D., Ivanov Svetlana Lj.
doaj   +1 more source

Some Things are not held together by Glue: Chunambo and other ‘Sticky Matter’ in Subtropical Macao, China

open access: yeseTropic: electronic journal of studies in the tropics, 2022
This article uses adhesives or what I am calling here ‘sticky matter,’ to illustrate multispecies relationships in Macao, a subtropical coastal region in South China. It focuses primarily on a traditional rammed earth material known as chunambo in Macao
Benjamin Kidder Hodges
doaj   +1 more source

Modeling of multifunctional porous tissue scaffolds with continuous deposition path plan [PDF]

open access: yes, 2012
A novel modeling technique for porous tissue scaffolds with targeting the functionally gradient variational porosity with continuous material deposition planning has been proposed.
Khoda, AKM B.   +4 more
core   +1 more source

Removal of Decontaminating Agent from Aqueous Solution Using Microporous and Mesoporous Materials: Activated Carbon as an Effective Adsorbent

open access: yesAdsorption Science & Technology, 2008
Wastewater from nuclear plants contains oxalic acid, a chelating compound used to remove surface activity. This forms complexes with radioactive cations, thereby impeding their removal by conventional techniques. In this study, oxalic acid was removed by
Narasimhan Gokulakrishnan   +2 more
doaj   +1 more source

Comparison of the approaches to assessing the compressibility of the pore space

open access: yesЗаписки Горного института, 2022
Integral and differential approaches to determining the volumetric compression of rocks caused by changes in the stress state are considered. Changes in the volume of the pore space of rocks are analyzed with an increase in its all-round compression ...
Vitaly S. Zhukov, Yuri O. Kuzmin
doaj   +1 more source

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