نتایج جستجو برای: melt fusion

تعداد نتایج: 135987  

1999
J. J. STUDENT R. J. BODNAR

Coeval silicate melt and aqueous synthetic fluid inclusions were INTRODUCTION formed at 800°C and 2000 bars in the quartz-saturated haploIn recent years the study of silicate melt inclusions has granite–H2O–NaCl–KCl system. The equilibrium assemblage congained considerable popularity as a method to charsisted of Ab19·2Or31·1Qtz49·1 melt, quartz, and an aqueous solution acterize the PTX evolutio...

2015
M. J. Fried G. A. Catania T. C. Bartholomaus D. Duncan M. Davis L. A. Stearns J. Nash E. Shroyer D. Sutherland

Submarine melt can account for substantial mass loss at tidewater glacier termini. However, the processes controlling submarine melt are poorly understood due to limited observations of submarine termini. Here at a tidewater glacier in central West Greenland, we identify subglacial discharge outlets and infer submarine melt across the terminus using direct observations of the submarine terminus...

Journal: :Science 2011
Wenlu Zhu Glenn A Gaetani Florian Fusseis Laurent G J Montési Francesco De Carlo

The permeability of the upper mantle controls melt segregation beneath spreading centers. Reconciling contradictory geochemical and geophysical observations at ocean ridges requires a better understanding of transport properties in partially molten rocks. Using x-ray synchrotron microtomography, we obtained three-dimensional data on melt distribution for mantle peridotite with various melt frac...

Journal: :journal of the iranian chemical research 0
uche b. eke department of chemistry, university of ilorin, pmb 1515, ilorin, nigeria temitope o. abodunrin department of chemistry, university of ilorin, pmb 1515, ilorin, nigeria samson o. owalude department of chemistry, university of ilorin, pmb 1515, ilorin, nigeria

the melt-phase synthesis of dioctyltin (iv) and triphenyltin (iv) benzoates were carried outusing stoichiometric amounts of benzoic acids and the corresponding organotin (iv) compounds.the reagents were ground together in a mortar and fed into a boiling glass tube. a cannula tubewas inserted into the boiling tube to discharge accumulated gaseous products. a syringe ensureda continuous flow of d...

2010
Daniel Feltham

[1] The extent and thickness of the Arctic sea ice cover has decreased dramatically in the past few decades with minima in sea ice extent in September 2005 and 2007. These minima have not been predicted in the IPCC AR4 report, suggesting that the sea ice component of climate models should more realistically represent the processes controlling the sea ice mass balance. One of the processes poorl...

Journal: :The International Journal of Advanced Manufacturing Technology 2021

Abstract Powder bed fusion (PBF) of ceramics is often limited because the low absorptance ceramic powders and lack process understanding. These challenges have been addressed through a co-development customized laser capabilities. The starting powder made mix pure alumina granules, to which metal oxide dopant added increase absorptance. performance different granules parameters depends on large...

Journal: :Metals 2021

This study investigates the influence of resistive pre-heating feedstock wire (here called hot-wire) on stability laser-directed energy deposition Duplex stainless steel. Data acquired online during depositions as well metallographic investigations revealed process characteristic and its window. The data, such electrical signals in circuit images captured from side-view interaction zone gave in...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2017
Soheil Ghanbarzadeh Marc A Hesse Maša Prodanović

The segregation of dense core-forming melts by porous flow is a natural mechanism for core formation in early planetesimals. However, experimental observations show that texturally equilibrated metallic melt does not wet the silicate grain boundaries and tends to reside in isolated pockets that prevent percolation. Here we use pore-scale simulations to determine the minimum melt fraction requir...

2003
B. K. Holtzman M. E. Zimmerman S. B. Ginsberg D. L. Kohlstedt Susumu Umino

[1] We demonstrate that deformation of partially molten ductile rocks can produce melt segregation by two-phase flow. In simple shear experiments on several melt-rock systems at high temperature and pressure, melt segregates into distinct melt-rich layers oriented 20 to the shear plane. Melt segregates in samples in which pressure gradients can develop at length scales less than the sample thic...

2014
Arno A. Enose Priya K. Dasan H. Sivaramakrishnan Sanket M. Shah

Solid dispersion is molecular dispersion of drug in a polymer matrix which leads to improved solubility and hence better bioavailability. Solvent evaporation technique was employed to prepare films of different combinations of polymers, plasticizer, and a modal drug sulindac to narrow down on a few polymer-plasticizer-sulindac combinations. The sulindac-polymer-plasticizer combination that was ...

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