Mobil

About: Mobil is a based out in . It is known for research contribution in the topics: Catalysis & Zeolite. The organization has 7085 authors who have published 10642 publications receiving 237497 citations. The organization is also known as: Socony-Vacuum Oil Company & Standard Oil Company of New York.

Continuous layon roller film winder

Abstract: A continuous winder which produces individual rolls of sheet material having a high quality finish. This is accomplished by maintaining a surface-winding layon roller in contact with each roll throughout the entire winding operation. The winder is comprised of a support frame having a turrent mounted therein which carries a plurality of spindles onto which the individual rolls are wound. A double layon roller assembly is mounted in the frame so that one of the layon rollers is in contact with a first spindle during the winding operation. A length counter generates a signal which starts the transfer operation when a roll is wound whereupon a second spindle is brought up to speed and a cutter is extended adjacent the sheer of the material. Simultaneously, an auxillary layon roller is moved into contact with the second spindle. Adhesive on the second spindle pulls the web onto the cutter starts the winding on the second spindle. The cutter is retracted, and the turret is indexed approximately 30°. The auxillary layon roller remains in contact with the second spindle during this indexing while the primary layon roller remains in contact with the first spindle. When the primary layon roller clears the finished roll, the second primary layon roller moves into contact with the second spindle. The auxillary layon roller is retracted and the turret is indexed approximately an additional 60° to move the second spindle to the normal roll buildup position.

Method for restoring a leached formation

Abstract: A method for restoring a formation which has undergone an in situ leaching operation wherein minerals oxidized during the leach operation pose a contamination threat to the formation water. In the present invention, the formation is flushed with a restoration fluid which contains a reducing agent capable of reducing the oxidized minerals to their reduced, insoluble state so that they are redeposited into the formation. Examples of suitable reducing agents are hydrogen gas, hydrogen sulfide, sulfur dioxide, carbon monoxide, and ferrous iron solutions.

The Goban Spur transect: Geologic evolution of a sediment-starved passive continental margin

Abstract: Leg 80 of the DSDP-IPOD program drilled a transect of four core holes (548–551) across the continent-ocean boundary at Goban Spur, a prominent southwest-trending structural high on the Irish continental slope. Multichannel seismic-reflection profiles show that, during rifting, continental basement rocks of Goban Spur were broken up by northwest-trending listric normal faults to form a series of half-graben basins. Two of these half-grabens were sampled during Leg 80 (Sites 548 and 549). Site 550 was located on the adjacent oceanic crust of Porcupine Abyssal Plain. Site 551 was located on transitional crust at the foot of Goban Spur. The objectives were lo analyze the structural, the depositional, and the paleoenvironmental development of this sediment-starved passive continental margin. At Sites 548 and 549, basement comprises continental Hercynian metasediments of Devonian age; at Sites 550 and 551, the basement is tholeiitic basalt. The oldest syn-rift sediments (Barremian age, or perhaps late Hauterivian) were penetrated at Site 549, lying uuconformably below Aptian? strata. Seismic sequence analysis reveals that Aptian? strata also overlie this unconformity farther northeastward in the basin. An unconformity above the Aptian? section marks the end of rifting and the beginning of sea-floor spreading. An Albian age for the initiation of sea-floor spreading was corroborated at Site 550 where abyssal late Albian chalks rest upon and are interbedded with oceanic basalts, indicating an initial water depth of ∼2,000 m. As sea-floor spreading progressed, Goban Spur subsided rapidly, so that by Cenomanian time, bathyal to abyssal chalks were accumulating at deeper sites. After two periods of partial stagnation in the Aptian-Albian and in the Turonian, chalk deposition in well-oxygenated environments took place at all sites, modified chiefly by shifts in deep-circulation patterns and the calcite compensation depth (CCD), by periodic influx of terrigenous detritus during low stands of sea level (especially in the Cenozoic), and by frequent displacement of older carbonates from the slope to abyssal sites. A number of major unconformities correspond to those most often reported from other widespread locations in the North Atlantic Basin and on surrounding continental shelves and coastal plains. Several unconformities are preserved undisturbed in our cores and can be correlated with sea-level fluctuations, with paleoceanographic events, and with tectonic movements. A thick Quaternary section at Site 548 records prominent fluctuations of glacial-inter-glacial paleoclimates. An even thicker Paleogene section at Site 549 provides unusually well-preserved and uninterrupted sequences suitable for detailed sedimentological and stratigraphic studies.

Fast training of neural networks for remote sensing

Abstract: Fast training algorithms are presented for the training of neural networks used for inversion and classification problems. The algorithms build upon a previously described technique in which linear equations are solved for the network's output weights. First, the method is motivated by an analysis of the multilayer perceptron, based on polynomial basis functions. A conjugate gradient solution to the output weight equations is introduced, which works even when the equations are ill‐conditioned. Techniques are described which can be used to improve hidden unit weights. The output weight optimization technique is extended to classification networks, which have nonlinear output unit activations. Neural networks for inversion of surface scatter parameters and classification of sea ice are designed to illustrate the techniques. It is seen that the techniques are significantly faster than back‐propagation.

Catalysts for para-ethyltoluene dehydrogenation

Abstract: Para-ethyltoluene dehydrogenation catalyst compositions and processes for using such catalysts are provided. The catalyst compositions comprise a catalytically active iron compound, e.g., iron oxide; a potassium catalyst promoter, e.g., potassium carbonate; an optional chromium compound stabilizer, e.g., chromic oxide, and a gallium compound, e.g., gallium trioxide. Utilization of particular amounts of gallium compound in dehydrogenation catalyst compositions of this type will provide a catalyst especially suitable for promoting the selective dehydrogenation of para-ethyltoluene to form para-methylstyrene with sustained catalyst activity, with minimized aromatic ring loss and with minimal formation of popcorn polymer from the reaction effluent.