Kohl, A. L., and Riesenfeld, F. C., Gas Purification, Gulf Publishing Company, Houston, Texas 1979.  [c.65]

There are currently more than 6,500 oil and gas installations located on the continental shelves of some 53 countries. About 4,000 of these are in the US Gulf of Mexico, 950 in Asia, 700 in the Middle East and 400 in Europe.  [c.370]

Jain et al., 1995] Jain, M. K., Gelb, M., Rogers, J., and Berg, O. Kinetic basis for interfacial catalysis by phospholipase A2. Methods in enzymology. 249 (1995) 567-614  [c.62]

Besides these main categories, a large number of hybrid visualization techniques also exist, which arc combinations of the methods described. Well-known hybrid approaches arc the 2D or 3D glyph displays. These techniques combine the multidimensional representation capabilities of icon-based methods with the easy and intuitive representations of scatter-plot displays, Therefore these techniques can also be frequently found within chemical data analysis applications.  [c.477]

Methane clathrates have received recent atten tion from a different segment of the scientific com munity While diving in the Gulf of Mexico in 1997 a research team of biologists and environmental scien tists were surprised to find a new species of worm grazing on the mound of a methane clathrate What were these worms feeding on Methane Bacteria that live on the methane A host of questions hav mg to do with deep ocean ecosystems suddenly emerged Stay tuned  [c.66]

The difference m odor between (R) and (S) carvone results from their different behavior toward receptor sites m the nose It is believed that volatile molecules occupy only those odor receptors that have the proper shape to accommodate them Because the receptor sites are themselves chiral one enantiomer may fit one kind of receptor while the other enantiomer fits a different kind An analogy that can be drawn is to hands and gloves Your left hand and your right hand are enantiomers You can place your left hand into a left glove but not into a right one The receptor (the glove) can accommodate one enantiomer of a chiral object (your hand) but not the other  [c.295]

All the double bonds in rubber have the Z (or cis) con figuration A different polymer of isoprene called gutta-percha has shorter polymer chains and E (or trans) double bonds Gutta percha is a tough horn like substance once used as a material for golf ball covers  [c.408]

In the first edition of Modern Spectroscopy 1 tried to go some way towards bridging the gulf that often seems to exist between high resolution spectroscopy and low resolution, often analytical, spectroscopy. In this edition 1 have gone further by including X-ray fluorescence spectroscopy and inductively coupled plasma atomic emission spectroscopy, both of which are used almost entirely for analytical purposes. 1 think it is important that the user understand the processes going on in any analytical spectroscopic technique that he or she might be using.  [c.468]

Cherts CHESS Chevrefeuille Chevrel phase Chevron-Gulf process Chevron process  [c.191]

Gold-zinc Golf-ball covers  [c.451]

Golf club shafts Golf tee mats GoLYTELY  [c.451]

Worldwide furfuryl alcohol capacity in 1993 was estimated to be 110,000 metric tons (38). As with furfural, new capacity in developing countries is replacing older capacity in developed countries. China and South Africa have become significant producers of furfuryl alcohol. New plants have been built in Asia and Indonesia as well. Consumption of furfuryl alcohol is spread over the globe the largest use is in the foundry industry which is increasingly moving away from heavily industrialized countries.  [c.80]

With a few exceptions reservoir rocks are sediments. The two main categories are siliciclastic rocks, usually referred to as elastics or sandstones , and carbonate rocks. Most reservoirs in the Gulf of Mexico and the North Sea are contained in a clastic depositional environment many of the giant fields of the Middle East are contained in carbonate rocks. Before looking at the significance of depositional environments for the production process let us investigate some of the main characteristics of both categories.  [c.76]

For example, the many deepwater fields located in the Gulf of Mexico are of Tertiary age and are comprised of complex sand bodies which were deposited in a deepwater turbidite sequence. The BP Prudhoe Bay sandstone reservoir in Alaska is of Triassic/ Cretaceous age and was deposited by a large shallow water fluvial-alluvial fan delta system. The Saudi Arabian Ghawar limestone reservoir is of Jurassic age and was deposited in a warm, shallow marine sea. Although these reservoirs were deposited in very different depositional environments they all contain producible accumulations of hydrocarbons, though the fraction of recoverable oil varies. In fact, these three fields are some of the largest in the world, containing over 12 billion barrels of oil each  [c.79]

Keywords deterministic methods, STOllP, GllP, reserves, ultimate recovery, net oil sands, area-depth and area-thickness methods, gross rock volume, expectation curves, probability of excedence curves, uncertainty, probability of success, annual reporting requirements, Monte-Carlo simulation, parametric method  [c.153]

Introduction and commercial application Investment opportunities in the exploration and production (E P) sector of oil and gas business are abundant. Despite areas such as the North Sea, Gulf of Mexico and the North Slope in Alaska being mature areas, there are still many new fields under development in those regions, and new areas of business interest are opening up in South America, Africa and South East Asia. Some fields which have a production history of decades are being redeveloped, such as the Pedernales Field in Venezuela.  [c.303]

In perfomiing ex situ surface analysis, the transfer from solution to the spectrometer sometimes occurs either tln-ough the air or within a glove bag filled with an inert atmosphere. Many ex situ studies of chemical reactions at the liquid-solid interface, however, have been carried out using special wet cells that are directly attached to a UFIV chamber [93, 94]- With this apparatus, the samples can be reacted and then innnediately transferred to UFIV without encountering air. Note that some designs enable complete iimnersion of the sample into solution, while others only allow the sample surface to interact with a meniscus. Although these investigations do not probe the liquid-solid interface directly, they can provide much infomiation on the surface chemistry that has taken place.  [c.314]

Golab J T, Sprague J R, Oarron K T, Schatz G 0 and Van Duyne R P 1988 A surface enhanced hyper-Raman scattering study of pyridine adsorbed onto silver experiment and theory J. Chem. Phys. 88 7942-51  [c.1231]

Baeckman W v, Schenk W and Prinz W 1997 Handbook of Cathodic Corrosion Protection Theory and Practice of Electrochemical Protection Processes (Flouston, TX Gulf)  [c.2738]

The first known application of an optical character recognition system in processing of chemical information dates back to 1973 [43], Scientists in the Cambridge Crystallographic Data Centre were using an IBM typewriter equipped with an OCR-B golf ball. The typed sheets were processed by a service bureau using spedahzed OCR hardware, yielding a magnetic tape, which formed the basic input to the system.  [c.44]

GAlib (C+ + Library of Genetic Algorithm Components), Massachusetts Institute of Technology, http //  [c.483]

Herschel, W.H. and Bulkley, R., 1927. See Rudraiah, N, and Kaloni, P.N. 1990. Flow of non-Newtonian fluids. In Encyclopaedia of Fluid Mechanics, Vol. 9, Chapter 1, Gulf Publishers, Houston.  [c.15]

Mitsoulis, E., 1990. Numerical Simulation of Viscoelastic Fluids. In Encyclopaedia of Fluid Mechanics, Vol. 9, Chapter 21, Gulf Publishers, Houston.  [c.15]

Gluob, G.H, and Van Loan, C.F., 1984. Matrix. Computations, Johns Hopkins University Press, Baltimore.  [c.207]

Sulfur is commercially recovered from wells sunk into the salt domes along the Gulf Goast of the U.S. Using the Frasch process heated water is forced into the wells to melt the sulfur, which is then brought to the surface.  [c.38]

G. A. Gallup, R. L. Vance, J. R. Collins, J. M. Norbeck, Adv. Quantum Chem. 16, 229 (1982).  [c.29]

On hydrolysing a protein, both NH, groups and COOH groups are set free in equal numbers by the splitting of - CONH - groups, and therefore the reaction cannot be followed by simple titration. One method of estimating the breakdown products (peptones, peptides, amino-adds, etc.) is S0rensen s formaldehyde titration method, the theory of which has been fully discussed under the Estimation of Glyv ine (p. 463). From the description given there it is obvious that the quantitative value of the formaldehyde titration will increase as the digestion proceeds, until finally a value is obtained which corresponds (theoretically at least) to the constituent amino-acids of the original protein.  [c.518]

The tertiary structure of a peptide or protein refers to the folding of the chain The way the chain is folded affects both the physical properties of a protein and its biolog ical function Structural proteins such as those present m skin hair tendons wool and silk may have either helical or pleated sheet secondary structures but m general are elongated m shape with a chain length many times the chain diameter They are classed as fibrous proteins and as befits their structural role tend to be insoluble m water Many other proteins including most enzymes operate m aqueous media some are soluble but most are dispersed as colloids Proteins of this type are called globular proteins Globular proteins are approximately spherical Figure 27 18 shows carboxypeptidase A a globu lar protein containing 307 ammo acids A typical protein such as carboxypeptidase A  [c.1145]

Protein tertiary structure is also influenced by the environment In water a globu lar protein usually adopts a shape that places its hydrophobic groups toward the interior with Its polar groups on the surface where they are solvated by water molecules About 65% of the mass of most cells is water and the proteins present m cells are said to be m their native state—the tertiary structure m which they express their biological activ ity When the tertiary structure of a protein is disrupted by adding substances that cause the protein chain to unfold the protein becomes denatured and loses most if not all of Its activity Evidence that supports the view that the tertiary structure is dictated by the primary structure includes experiments m which proteins are denatured and allowed to stand whereupon they are observed to spontaneously readopt their native state confer matron with full recovery of biological activity  [c.1146]

See pages that mention the term GaAlP : [c.190]    [c.227]    [c.33]    [c.88]    [c.194]    [c.271]    [c.371]    [c.661]    [c.706]    [c.477]    [c.451]    [c.587]    [c.207]    [c.485]    [c.107]    [c.443]    [c.451]    [c.85]    [c.111]    [c.253]   
Encyclopedia of materials characterization (1992) -- [ c.393 ]