Results 51 to 60 of about 26,893 (289)

Polyhedral units and network connectivity in calcium aluminosilicate glasses from high-energy x-ray diffraction

, 2000
Structure factors for Cax/2AlxSi1-xO2 glasses (x=0,0.25,0.5,0.67) extended to a wave vector of magnitude Q= 40 1/A have been obtained by high-energy x-ray diffraction. For the first time, it is possible to resolve the contributions of Si-O, Al-O and Ca-O
B. E. Warren, B. Himmel, B. Himmel, B. O. Mysen, D. I. Grimley, G. Engelhardt, J. F. Stebbins, M. C. Ekersley, M. Nofz, M. Taylor, P. H. Gaskell, P. McMillan, R. L. Mozzi, S. D. Shastri, S. J. L. Billinge, S. K. Lee, V. Petkov, V. Petkov, V. Petkov, V. Petkov, W. H. Zachariasen, W. Ruland   +21 more
core   +1 more source

Effects of water and fluorine on the viscosity of albite melt at high pressure: a preliminary investigation [PDF]

, 1985
The viscosities of fluorine- and water-bearing melts based on albite composition have been determined at 7.5, 15 and 22.5 kbar by the falling-sphere method. All melt viscosities decrease isothermally with increasing pressure.
Arndt, Bartlett, Berman, Bjørn O. Mysen, Bottinga, Brown, Burnham, Christiansen, Clark, Compston, Dingwell, Donald B. Dingwell, Gill, Hazen, Huang, Jurewicz, Kogarko, Kushiro, Kushiro, Kushiro, Manning, Mysen, Mysen, Navrotsky, Piwinskii, Rabinovich, Rau, Riebling, Scarfe, Seifert, Shaw, Shaw, Shaw, Sleep, Spera, Stolper, Taylor, Turcotte, Tuttle, Vernon, Waff, White   +41 more
core   +1 more source

The Aging Blood: Cellular Origins, Circulating Drivers, and Therapeutic Potential

Aging and Cancer, EarlyView.
As a conduit linking all organs, the blood system both reflects and actively drives systemic aging. This review highlights how circulating pro‐aging and antiaging factors and age‐associated hematopoietic stem cell dysfunction contribute to immunosenescence and multi‐organ decline, positioning the hematopoietic system as a target for aging intervention.
Hanqing He, Jianwei Wang
wiley   +1 more source

Investigation of the Tribological Effects of Nano-Sized Transition Metal Oxides on a Base Oil Containing Pour Point Depressant and Viscosity Modifier

ChemEngineering
This study investigates the tribological effects of nano-sized metal oxides (ZrO2, CuO, Y2O3 and TiO2) in Group III type base oil containing 0.3% pour point depressant (PPD) and 5% viscosity modifier (VM) to enhance friction and wear performance.
Ádám István Szabó, Kevin Szabó, Hajnalka Hargitai   +2 more
doaj   +1 more source

Sprayable low density ablator and application process [PDF]

, 1978
A sprayable, low density ablative composition is described consisting esentially of: (1) 100 parts by weight of a mixture of 25-65% by weight of phenolic microballoons, 0-20% by weight of glass microballoons, 4-10% by weight of glass fibers, 25-45% by ...
Brown, E. L., Carter, J. M., Hill, W. E., King, H. M., Schuerer, P. H., Sharpe, M. H., Simpson, W. G., Webb, D. D.   +7 more
core   +1 more source

Development of a fast screening method for the direct determination of chlorinated persistent organic pollutants in fish oil by high-resolution continuum source graphite furnace molecular absorption spectrometry [PDF]

, 2017
The authors are grateful to the Conselho Nacional de Desenvolvimento Científico and Tecnológico (CNPq); the present research was mostly financed through Project no. CNPq 406877/2013-0.
Cadorim, Heloisa R., Campo Menoyo, Javier Del, Carvalho, Gabriel S., Duarte, Fabio A., Feldmann, Jorg, Merib, Josias, Pereira, Éderson R, Schneider, Mauana, Welz, Bernhard   +8 more
core   +1 more source

Pressure- and Temperature-Dependent Viscosity Measurements of Lubricants With Polymeric Viscosity Modifiers [PDF]

Frontiers in Mechanical Engineering, 2019
The pressure-viscosity coefficient, α, is a measure of the pressure dependence of the viscosity of the liquid in elastohydrodynamic lubrication (EHL). There seems to be confusion around the understanding of the pressure-viscosity response in the inlet zone.
Babak LotfizadehDehkordi, Paul J. Shiller, Gary L. Doll   +2 more
openaire   +2 more sources

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

Advanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti, Marta Miola, Liliana Liverani, Paolo Sartori, Enrica Verné, Aldo R. Boccaccini   +5 more
wiley   +1 more source

Development of key additives for organoclay-free oil-based drilling mud and system performance evaluation

Petroleum Exploration and Development, 2018
Traditional oil-based drilling muds (OBMs) have a relatively high solid content, which is detrimental to penetration rate increase and reservoir protection.
Jinsheng SUN, Xianbin HUANG, Guancheng JIANG, Kaihe LYU, Jingping LIU, Zhiwen DAI   +5 more
doaj   +1 more source

Effect of Cr2O3 content on viscosity and phase structure of chromium-containing high-titanium blast furnace slag

Journal of Materials Research and Technology, 2020
For several years, ordinary vanadium-titanium magnetite has been rapidly consumed because of its use in smelting. Thus, sources of chromium-containing vanadium-titanium magnetite will need to be developed and utilized in the future.
Ding Yang, Feng Zhang, Jian Wang, Zhiming Yan, Guishang Pei, Guibao Qiu, Xuewei Lv   +6 more
doaj   +1 more source