High-Pressure Fractionation and Extraction of Natural Oils

2013 ◽  
pp. 239-261
Author(s):  
Esteban Brignole ◽  
Selva Pereda
Keyword(s):  
High Pressure ◽  
Natural Oils ◽  
Pressure Fractionation

High-pressure fractionation of spent coffee grounds oil using green solvents

2020 ◽  
Vol 157 ◽  
pp. 104689 ◽  
Author(s):  
Raphaela G. Bitencourt ◽  
Fernando M.P.A. Mello ◽  
Fernando A. Cabral ◽  
Antonio J.A. Meirelles
Keyword(s):  
High Pressure ◽  
Green Solvents ◽  
Spent Coffee Grounds ◽  
Pressure Fractionation ◽  
Coffee Grounds

High-pressure fractionation in rift-related basaltic magmatism: Faeroe plateau basalts

Geology ◽  
1995 ◽  
Vol 23 (7) ◽  
pp. 671 ◽  
Author(s):  
Andrew C. Kerr ◽  
Robert N. Thompson ◽  
Stefan Bernstein
Keyword(s):  
High Pressure ◽  
Basaltic Magmatism ◽  
Pressure Fractionation

scholarly journals Relations between basalts and adakitic–felsic intrusive bodies in a soft-substrate environment: the South Ouessant Visean basin in the Variscan belt, Armorican Massif, France

2016 ◽  
Vol 53 (4) ◽  
pp. 441-456 ◽  
Author(s):  
Martial Caroff ◽  
Bernard Le Gall ◽  
Christine Authemayou ◽  
Denise Bussien Grosjean ◽  
Cyrill Labry ◽  
...  
Keyword(s):  
High Pressure ◽  
Early Stage ◽  
Variscan Orogeny ◽  
Variscan Belt ◽  
Soft Substrate ◽  
Mafic Intrusions ◽  
Partial Remelting ◽  
Pressure Fractionation ◽  
Peraluminous Granites ◽  
Armorican Massif

The metasedimentary and magmatic terranes in the southern part of the Ouessant Island (Western Brittany, France) are the offshore prolongation of the Léon Variscan metamorphic domain. They mainly consist of micaschists and subordinate amphibolitic lenses (meta-pillow lavas and volcaniclastic successions) cut by a swarm of trondhjemite sills, together with a large porphyritic monzogranite body, newly dated at 336 Ma, and later syeno-leucogranitic intrusions. A large spectrum of fluidal peperites, including spectacular “fiamme”-bearing breccias, is observable at the contact between metasediments and most of the intrusives. The coexistence of amphibolitized basalts, adakitic trondhjemites, and peraluminous granites in the inferred South Ouessant basin is assigned to a variety of deep subcontemporaneous processes, including asthenospheric partial melting, high-pressure fractionation in lithospheric reservoirs (or partial remelting of deep crystallized mafic intrusions), and continental crust melting. Implications of these new results are discussed in the Visean basinal framework of the Armorican Massif, formed at an early stage of the Variscan orogeny.

The Petrology of Mesozoic Alkaline Intrusives of Central Newfoundland

1974 ◽  
Vol 11 (9) ◽  
pp. 1208-1219 ◽  
Author(s):  
D. F. Strong ◽  
A. Harris
Keyword(s):  
High Pressure ◽  
North Atlantic ◽  
Strong Evidence ◽  
North Atlantic Ocean ◽  
Immiscible Liquid ◽  
Host Matrix ◽  
The North ◽  
Pressure Fractionation ◽  
Silicate Liquids ◽  
The North Atlantic

Lamprophyre dikes occur as northeast-striking swarms and in radiating patterns around alkaline stocks. They range in age from Jurassic to Cretaceous and are interpreted as the result of the rifting associated with formation of the North Atlantic Ocean. They show strong evidence of coexisting immiscible silicate liquids, with leucocratic globules in a darker host matrix. The globules are richer in CO2 and Na2O than the host and these liquids are not similar in composition to those of other immiscible liquid pairs. The whole suite is interpreted to have resulted from high pressure eclogite fractionation followed by volatile build-up due to lower pressure fractionation of olivine, titanaugite, plagioclase, biotite, and/or kaersutite.

Geochemical characteristics and petrogenesis of the main granitic intrusions of Greece: an application of trace element discrimination diagrams

1992 ◽  
Vol 56 (385) ◽  
pp. 487-501 ◽  
Author(s):  
E. Baltatzis ◽  
J. Esson ◽  
P. Mitropoulos
Keyword(s):  
High Pressure ◽  
Trace Element ◽  
Partial Melting ◽  
Geochemical Characteristics ◽  
Pressure Fractionation ◽  
Tectonic Zones ◽  
Granitic Intrusions ◽  
Geochemical Investigation ◽  
Of Greece

AbstractGeochemical investigation of samples from 20 granitic intrusions in six tectonic zones of the Hellenides shows that both I-type and S-type granites occur in the region. The I-type granites from four of the zones, namely the Rhodope Massif (RM), the Serbomacedonian Massif (SMM), the Perirhodope Zone (PRZ) and the Attico-cycladic Zone (ACZ), show some systematic differences in their geochemistry. In particular, the Rb, Y, Nb, K and Ti contents increase in the sequence PRZ, SMM, RM and ACZ. The PRZ granites are of Jurassic age, those of the SMM and RM are Eocene to Oligocene and the ACZ ones are Miocene. The differences between zones are attributed to a combination of differences in partial melting and high-pressure fractionation processes. Geochemical differences within zones are explained by variable degrees of amphibole and apatite fractionation and accumulation.

High-pressure freezing of cells in suspension for low-voltage scanning electron microscopy (LVSEM)

1991 ◽  
Vol 49 ◽  
pp. 64-65
Author(s):  
Marek Malecki ◽  
James Pawley ◽  
Hans Ris
Keyword(s):  
Electron Microscopy ◽  
High Pressure ◽  
Low Voltage ◽  
Culture Media ◽  
Cell Structure ◽  
Freeze Substitution ◽  
Ice Crystal ◽  
High Pressure Freezing ◽  
Cell Culture Media ◽  
Voltage Scanning

The ultrastructure of cells suspended in physiological fluids or cell culture media can only be studied if the living processes are stopped while the cells remain in suspension. Attachment of living cells to carrier surfaces to facilitate further processing for electron microscopy produces a rapid reorganization of cell structure eradicating most traces of the structures present when the cells were in suspension. The structure of cells in suspension can be immobilized by either chemical fixation or, much faster, by rapid freezing (cryo-immobilization). The fixation speed is particularly important in studies of cell surface reorganization over time. High pressure freezing provides conditions where specimens up to 500μm thick can be frozen in milliseconds without ice crystal damage. This volume is sufficient for cells to remain in suspension until frozen. However, special procedures are needed to assure that the unattached cells are not lost during subsequent processing for LVSEM or HVEM using freeze-substitution or freeze drying. We recently developed such a procedure.

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