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Ontos

Adsorption. Adsorption involves the transfer of a component onto a solid surface. An example is the adsorption of organic vapors by activated carbon. Activated carbon is a highly porous form of carbon manufactured from a variety of carbonaceous raw materials such as coal or wood. The adsorbent may need to be... [Pg.108]

The first requirement is a source of infrared radiation that emits all frequencies of the spectral range being studied. This polychromatic beam is analyzed by a monochromator, formerly a system of prisms, today diffraction gratings. The movement of the monochromator causes the spectrum from the source to scan across an exit slit onto the detector. This kind of spectrometer in which the range of wavelengths is swept as a function of time and monochromator movement is called the dispersive type. [Pg.57]

After often a lengthy period (several months) of acquisition and processing, the data may be loaded onto a seismic workstation for interpretation. These workstations are UNIX based, dual screen systems (sections on one side, maps on the other, typically) where all the trace data is stored on fast access disk, and where the picked horizons and faults can be digitised from the screen Into a database. Of vital Importance is access to all existing well data in the area for establishing the well - seismic tie. 2D data will be interpreted line by intersecting line, and 3D as a volume. [Pg.20]

Swamp Barges operate in very shallow water (less than 20 ft). They can be towed onto location and are then ballasted so that they sit on bottom . The drilling unit is mounted onto the barge. This type of unit is popular in the swamp areas of Nigeria. [Pg.32]

As in the construction industry, piling of the conductor is done by dropping weights onto the pipe or using a hydraulic hammer until no further penetration occurs. In an offshore environment the conductor is either piled (e.g. on a platform) or a large diameter hole is actually drilled, into which the conductor is lowered and cemented. Once the drill bit has drilled below the conductor the well is said to have been spudded. [Pg.45]

The stylus of the planimeter is guided around the depth to be measured and the respective area contained within this contour can then be read off. The area is now plotted for each depth as shown in Figure 6.2 and entered onto the area - depth graph. Since the structure is basically cut into slices of increasing depth the area measured for each depth will also increase. [Pg.156]

All pipelines will be circulated clean and those that are buried, or on the seabed, left filled with water or cement. Surface piping will normally be cut up and removed. Flexible subsea pipelines may be reeled-in onto a lay barge and disposed of onshore. [Pg.370]

The approximation of Fresnel is scalar approximation. Let u(, r],0-0) be the scalar wave function of the laser beam falling onto the optical element, and u( X,y,Cl) will the be scalar wave function in the plane Z = Cl. Then [3,4]... [Pg.266]

To describe the X-ray imaging system the projection of 3D object points onto the 2D image plane, and nonlinear distortions inherent in the image detector system have to, be modelled. A parametric camera model based on a simple pinhole model to describe the projection in combination with a polynomal model of the nonlinear distortions is used to describe the X-ray imaging system. The parameters of the model are estimated using a two step approach. First the distortion parameters for fixed source and detector positions are calculated without any knowledge of the projection parameters. In a second step, the projection parameters are calculated for each image taken with the same source and detector positions but with different sample positions. [Pg.485]

The detector setup consists of four 256 x 256 pixel amorphous silicon technology sensor flat panels with 0.75 x 0.75 mm pixel size, having an active area of 192 x 192 mm [5j. These sensors are radiation sensitive up to 25 MeV and therefor well suited for detecting the LINAC radiation. The four devices are mounted onto a steel Irame each having the distance of one active area size from the other. With two vertical and two horizontal movements of the frame it is possible to scan a total area of about 0.8 x 0.8 m with 1024 x 1024 pixel during four independent measurements. [Pg.493]

Projection radiography has long been used for pipe inspection and corrosion monitoring. In this traditional tangential wall thickness estimation the distance of border lines of the projected wall shadows of a pipe onto the film is a direct measure for the wall thickness. This method is not considered here, newer developments can be found in / /. [Pg.561]

Objects which are not covered completely by the fan-beam, which is defined by the linear detector array and the source can be inspected in a special mode. In this case the usable width of the fan is doubled, by placing the turning centre of the object onto the two edges oft the fan. [Pg.586]

The ERS may not be misunderstood as being the defect s real size, since it only considers the portion of sound being reflected by the defect, and therefore the influences of the shape, the surface condition and the orientation of the defect are not taken into consideration. Unfortunately a lot of criticism was loaded onto the DGS method, because exactly this mistake was made in the early days of the DGS technique, and many people described the DGS-method as a technique for defect sizing". [Pg.813]

Insofar as Ultrasonic Array probes have come onto the market from several years and are now moving from prototype stages into industrial tools for on-site inspections, methods and tools for acoustic characterization is becoming a real concern. Furthermore, the lack of standards, either national or European, enhances the needs for guidelines proposal. [Pg.819]

A film image is of course 2-dimensional and the bars are thus projected onto the film without knowledge of their depth from the surface. If the angle of projection is not perpendicular to the film then there may be considerable distortion of the projected images, as is often the case with concrete - typical object (reinforcing) film distances may be 150 mm. The problem can be solved by stereo-imaging but this is ineffective and expensive. [Pg.1000]

The final grid is positively charged to accelerate the accepted electrons onto the fluorescent screen. The diffraction pattern may then be photographed. [Pg.303]

Optical second-harmonic generation (SHG) has recently emerged as a powerful surface probe [95, 96]. Second harmonic generation has long been used to produce frequency doublers from noncentrosymmetric crystals. As a surface probe, SHG can be caused by the break in symmetry at the interface between two centrosymmetric media. A high-powered pulsed laser is focused at an angle of incidence from 30 to 70° onto the sample at a power density of 10 to 10 W/cm. The harmonic is observed in reflection or transmission at twice the incident frequency with a photomultiplier tube. [Pg.311]

Fig. XI-1. Adsorption kinetics for C g alkanoic acids adsorbing onto alumina for various solution concentrations from Ref. 36. Lines are the fit to Eq. XI-IS. Fig. XI-1. Adsorption kinetics for C g alkanoic acids adsorbing onto alumina for various solution concentrations from Ref. 36. Lines are the fit to Eq. XI-IS.
Alkanethiols and other sulfur-bearing hydrocarbons covalently attach to metal surfaces alkanethiol onto gold is the most widely studied of these systems [27-29,31,32,45]. These SAMs are ordered provided the alkane chain contains nine or more carbons [32]. Binary solutions of two alkanethiols also appear... [Pg.396]

Fig. XI-2. Variation of physically adsorbed (Pp) and chemically adsorbed (Pc) segments as a function of time for cyclic polymethylsiloxane adsorbing from CCI4 onto alumina (from Ref. 43). Note that the initial physisoiption is overcome by chemical adsorption as the final state is reached. [T. Cosgrove, C. A. Prestidge, and B. Vincent, J. Chem. Soc. Faraday Trans., 86(9), 1377-1382 (1990). Reproduced by permission of The Royal Society of Chemistry.]... Fig. XI-2. Variation of physically adsorbed (Pp) and chemically adsorbed (Pc) segments as a function of time for cyclic polymethylsiloxane adsorbing from CCI4 onto alumina (from Ref. 43). Note that the initial physisoiption is overcome by chemical adsorption as the final state is reached. [T. Cosgrove, C. A. Prestidge, and B. Vincent, J. Chem. Soc. Faraday Trans., 86(9), 1377-1382 (1990). Reproduced by permission of The Royal Society of Chemistry.]...
The polymer concentration profile has been measured by small-angle neutron scattering from polymers adsorbed onto colloidal particles [70,71] or porous media [72] and from flat surfaces with neutron reflectivity [73] and optical reflectometry [74]. The fraction of segments bound to the solid surface is nicely revealed in NMR studies [75], infrared spectroscopy [76], and electron spin resonance [77]. An example of the concentration profile obtained by inverting neutron scattering measurements appears in Fig. XI-7, showing a typical surface volume fraction of 0.25 and layer thickness of 10-15 nm. The profile decays rapidly and monotonically but does not exhibit power-law scaling [70]. [Pg.402]

Fig. XI-7. Volume fraction profile of 280,000-molecular-weight poly(ethylene oxide) adsorbed onto deuterated polystyrene latex at a surface density of 1.21 mg/m and suspended in D2O, from Ref. 70. Fig. XI-7. Volume fraction profile of 280,000-molecular-weight poly(ethylene oxide) adsorbed onto deuterated polystyrene latex at a surface density of 1.21 mg/m and suspended in D2O, from Ref. 70.
Surface heterogeneity may be inferred from emission studies such as those studies by de Schrijver and co-workers on P and on R adsorbed on clay minerals [197,198]. In the case of adsorbed pyrene and its derivatives, there is considerable evidence for surface mobility (on clays, metal oxides, sulfides), as from the work of Thomas [199], de Mayo and co-workers [200], Singer [201] and Stahlberg et al. [202]. There has also been evidence for ground-state bimolecular association of adsorbed pyrene [66,203]. The sensitivity of pyrene to the polarity of its environment allows its use as a probe of surface polarity [204,205]. Pyrene or ofter emitters may be used as probes to study the structure of an adsorbate film, as in the case of Triton X-100 on silica [206], sodium dodecyl sulfate at the alumina surface [207] and hexadecyltrimethylammonium chloride adsorbed onto silver electrodes from water and dimethylformamide [208]. In all cases progressive structural changes were concluded to occur with increasing surfactant adsorption. [Pg.418]

The adsorption of the surfactant Aerosol OT onto Vulcan Rubber obeys the Langmuir equation [237] the plot of C/x versus C is linear. For C = 0.5 mmol/1, C/x is 100 mol/g, and the line goes essentially through the origin. Calculate the saturation adsorption in micromoles per gram. [Pg.420]


See other pages where Ontos is mentioned: [Pg.127]    [Pg.47]    [Pg.71]    [Pg.16]    [Pg.176]    [Pg.20]    [Pg.12]    [Pg.33]    [Pg.37]    [Pg.40]    [Pg.53]    [Pg.209]    [Pg.274]    [Pg.485]    [Pg.488]    [Pg.495]    [Pg.640]    [Pg.679]    [Pg.682]    [Pg.717]    [Pg.737]    [Pg.1062]    [Pg.91]    [Pg.312]    [Pg.370]    [Pg.395]    [Pg.415]   
See also in sourсe #XX -- [ Pg.8 , Pg.21 ]




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2,2 -Cyanines adsorbed onto microcrystalline cellulose

Absorption onto dehydration

Absorption onto silica particles

Addition of Radicals onto CNT

Addition onto acetylenes

Additions onto Olefins Meerwein Arylation

Adsorbed onto microcapsule surface

Adsorbed onto polystyrene

Adsorption behavior onto material

Adsorption behavior onto material surfaces

Adsorption of Acetic Acid onto Activated Charcoal

Adsorption of Ionic Surfactants onto Hydrophilic Surfaces

Adsorption of Nonionic Surfactants onto Hydrophilic Surfaces

Adsorption of a Pollutant from Groundwater onto Soil

Adsorption of organic compounds onto activated carbon applications in water and air treatments

Adsorption onto Functionalized Surfaces

Adsorption onto Hydrophobic Surfaces

Adsorption onto Powder Surfaces

Adsorption onto colloidal particles

Adsorption onto ferric oxides

Adsorption onto gold

Adsorption onto material surfaces

Adsorption onto minerals

Adsorption onto polyelectrolytes

Adsorption onto silver

Adsorption onto surfaces

Adsorption onto zeolites

Adsorption organic compounds onto resins

Adsorption polyelectrolyte onto metal

Adsorption solutes onto silanized glass

Albumin adsorption onto solid surfaces

Albumin molecules, adsorption onto

Aldehydes, addition onto

Alkenes anionic cyclisation onto

Aluminum, sorption onto

Antibodies adsorption density onto

Application Case Sorption onto Rocks

Application of UV curable powder onto MDF parts

Arenes, nucleophilic addition onto

Assembling AuNPs onto Aligned DNA Molecules

Atoms and Other Molecules Sorbed onto Solids

Attachment of Nanoparticles onto Electrodes

Azomethines, addition onto

Blood proteins onto polymer surfaces, adsorption

By nucleophilic attack onto carbonyl groups

CNT Material Adsorbed onto Polymer Microspheres

Carboxylic acid esters, addition onto

Cathode ions impacting onto

Cells onto 3D Objects and Scaffolds

Cellulases adsorption onto cellulose

Cellulosic fibers, graft copolymerizations onto

Chains Grafted onto a Filler Surface

Charge injection onto semiconductor surface

Composite films, electroplating onto

Contact evaporated onto organic film

Containers adsorption onto walls

Copolymerization graft onto cellulosic fibers

Cyanides, addition onto

Cyclization onto aromatic rings

Deposition of colloidal gold onto supports

Deposition of the Solution onto a Substrate

Dextran grafting reaction onto

Dispersion onto polystyrene

Dispersion onto polystyrene surfaces

E Adsorption from Aqueous Solution Onto Polar Adsorbents without Strongly Charged Sites

Electrochemical Addition of Aryl Halides onto Activated Olefins

Electron density partitioning onto atoms

Electron-beam evaporation, metal deposition onto

Enzymes adsorbed onto model surfaces

Ferric hydroxide sorption onto

Fibers graft polymerization onto

Fibrinogen sprayed onto surfaces

Fission deposition onto aerosols

Fitting Components onto a Chip

Fluorescence Microscopy of Liposome Fusion onto a DOPC-coated Hg Interface

Fundamentals of adsorption onto activated carbon

Gases adsorption onto solids

General Factors Affecting the Behavior of Metals Deposited onto Self-Assembled Monolayers

Graft Copolymerization onto Leather

Graft copolymerizations onto

Graft copolymers grafting onto

Graft polymerization onto nanoparticles

Grafted onto polybutadiene

Grafted onto polybutadiene copolymer

Grafted onto polybutadiene styrene/methyl methacrylate

Grafting Onto Technique

Grafting amino groups onto pendant

Grafting of monomers onto cellulose

Grafting onto

Grafting onto Cellulosic Materials

Grafting onto Modified Starches

Grafting onto method

Grafting onto the Chains

Grafting onto with amino groups

Grafting onto/from

Grafting reactions onto

Grafting, acrylic acid derivatives onto

Grafting, acrylic acid derivatives onto surfaces

Grafting-onto approach

Grafting-onto strategy substitution

Heterogeneous catalyst onto catalysts supports

How does water condense onto glass

Hydrazones cyclizations onto

Hydrazones, addition onto

Hydrophilic/hydrophobic copolymers adsorption onto

Imines cyclization onto

Imines cyclizations onto

Immobilization of DNA onto Polymer-Modified Electrode Surface

Immobilization of Transition-Metal Complexes Onto Carbon Materials

Immobilization onto functionalized

Impact grafted onto polybutadiene

Impregnation, onto clays

Introduction of Fullerenes onto Polymer Chains via Noncovalent Bonds

Isocyanides, addition onto

Ketenes, addition onto

Ketones, addition onto

Leaks onto insulation

Leaks onto water

Leaks onto water, wet ground, or insulation

Lignin grafting onto cellulose

MIP Anchoring Onto the Transducer

Macromonomers grafting onto polymers

Maleic anhydride, grafting reactions onto

Mapping procedure, from fermion onto

Mapping procedure, from fermion onto boson space

Mesoporous solids adsorption onto

Metal Ions and Complexes Sorbed Onto Solids

Methyl methacrylate copolymer grafted onto polybutadiene

Micelles, copolymer adsorption onto

Modification by Insertion of Functional Groups onto the Polysaccharide Backbone

Molecular weight copolymer adsorption onto

Molecules Sorbed Onto Solids

Molecules onto clusters

Mounting Paraffin Sections onto Slides

Nitrones, addition onto

Noble Gases Sorbed Onto Solids

Noble-Metal Impregnation Example onto a Modified Silica-Alumina Support

Onto Simple Models

Onto View

Onto function

Onto-logical

Organic Adsorption onto Colloids

Organic Compounds Sorbed Onto Solids

Organic solutes adsorption onto surfaces

Organic substances adsorption onto sediments

Oxime ethers, cyclizations onto

Palladium onto vanadium

Particle Transport onto Airway Surfaces

Particles passive adsorption onto

Percentage of nitrogen in major New England rivers that originates from fossil-fuel derived atmospheric deposition onto the landscape

Pesticides, organic, adsorption onto

Phosphate onto calcium carbonate

Pollutants adsorption onto soils

Poly grafting onto

Polyacrylamides, adsorption onto

Polyethylene glycol), grafted onto polystyren

Polymer grafting graft onto” strategy

Polymer modification photografting onto

Polymer onto the Fiber Surface by Electrodeposition

Polymer proteins onto

Polymers adsorption onto particle

Polymers grafting onto

Polypropylene photografting onto

Polypropylene surface photografting onto

Polystyrene grafted onto PTFE

Polystyrene grafted onto cellulose

Positive-energy states projection onto

Projection onto Diffusion Modes

Projection onto Pair Configuration Space

Projection onto subspace

Projections onto factors

Protein adsorption onto polystyrene

Protein onto polymer surfaces, adsorption

Protein onto surfaces

Proteins adsorption onto metals from solution

Proteins, immobilization onto functionalized

Putting Data onto the Worksheet

Pyridines, nucleophilic additions onto

Pyrimidines, nucleophilic additions onto

Quartz vapor deposition onto

Radical Graft Copolymerization of Vinylpyrrolidone onto Poly(vinylalcohol)

Redox-active polymers, deposition onto

Samples Collected onto Sorbents

Sampling onto Sorbent Tubes

Seed crystals growth onto

Selective Adsorption onto Promoters

Silica polymers coated onto

Site-selective attachment onto chemical

Solution of a Polymer onto the Fiber Surface

Solvent copolymer adsorption onto

Sorbed onto Solids

Sorption onto Colloidal Particles

Sorption onto Colloidal, Suspended, or Settled Sediments

Sorption onto chemical pulps

Spectra polymerized onto

Spheres adsorption onto

Sputter Deposition of ZnO onto CdS

Static Self-Adsorption of Polyelectrolytes onto the Membrane Surface

Strong electrostatic adsorption, metals onto

Strong electrostatic adsorption, metals onto catalysts supports

Strong electrostatic adsorption, metals onto characteristics

Structure and Physicochemical Properties of Polyalkylsiloxane Monolayers Prepared onto the Solid Substrate

Styrene/methyl methacrylate copolymer grafted onto

Substitution onto the Backbone

Surface onto various polymers

Synthesis and Deposition of ICPs onto Electrode Surfaces

Synthesis by construction of the second heterocyclic ring onto an existing heterocycle

Synthetic strategies grafting onto

Trace element sorption onto soil components

Transferred onto solid substrates

Types of DNA Immobilization Methodologies onto Sensor Surfaces

Vinyl chloride onto polyethylene, grafting

Vinyl monomers, graft copolymerization onto cellulosic fibers

Vinyl silanes, grafting onto polyethylen

Volume fraction adsorption onto

Water Sorbed Onto Solids

Welding onto an in-service pipeline

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