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Size properties

Si-C formation technique with hydrogen-terminated silicon substrates can also be used as the covalent attachment of nanomaterials onto silicon surface. The possibility of assembling nanomaterials in order is strongly desired in order to enable efficient utilization of their unique nano-sized properties. Ordered arranging and position controlling of nanomaterials on solid substrates especially on silicon surface have been intensively studied [10]. In this manuscript, the nanoparticle immobilization by thermal Si-C formation will be discussed [11]. [Pg.453]

Table 10.7 Size properties and methods of removal [169] (slightly modified)... Table 10.7 Size properties and methods of removal [169] (slightly modified)...
Both polonium nuclides are alpha emitters and therefore of particular concern. In health physics it is customary to differentiate between attached and unattached 218Po the former, usually the larger of the two consists of 218Po atoms attached to airborne particles which are copiously present in virtually every atmosphere the latter consists of a 218Po atom or ion, frequently surrounded by several dozen molecules of a condensible species present in the air. The purpose of this paper is to present a new method for measuring the size properties of these unattached 218Po clusters. [Pg.344]

Delincee and Radola100 used a commercial preparation, as well as fresh tomatoes, for the preparation, purification, and characterization of tomato pectinesterase. The tomatoes were pressed and then homogenized directly with ammonium sulfate at 70% saturation. The precipitate obtained was extracted with 0.3 M phosphate and repeatedly salted out with ammonium sulfate, and the product was separated on a column of Sephadex G-75. The pattern of separation was similar to that in preceding work.50,97 A detailed study of the size properties of pectinesterase was conducted by gel-filtration and sedimentation analysis.100 By column and thin-layer gel-filtration on Sephadex G-75, the approximate molecular weight of a number of preparations of tomato pectinesterase was determined, values of 24,000 and 27,000 being obtained. A possible interaction of the... [Pg.339]

Pumps handling flammable materials represent a significant potential for spill and subsequent fire. This is due to damage to seals and failures of other potential leak points. The first consideration in fire protection for pumps is their location relative to other equipment, vessels, process structures and buildings housing personnel, and key control or utility systems. When locating a pump, consideration should be given to the size, properties of material handled, temperature, and pressure. [Pg.273]

Not long after finishing up at Berkeley, Dick and Jane returned to Britain in September 1960 and, 3 weeks later, their first child, Caroline, was bom. With the support of an ICI Fellowship, Dick then took up a 2-year research appointment at the University of Bristol. The temporary character of this appointment did not seem to perturb him any, for during this time he and Jane bought a good-sized property in Henbury, just outside Bristol, where they went on to have two more children Miles in 1962 and Marcus in 1963. Apparently, when Richardson s Head of School at the University of Bristol heard of this (at the time) rather extravagant purchase of a family... [Pg.5]

Hatch, T., and S. P. Choate, Statistical Description of the Size Properties of Non-Uniform Particulate Substances, J. Franklin Inst, 207, 369-387 (1929). [Pg.426]

Executing the interview should be the easiest part of the study—if the researcher has prepared himself properly. The questions to be asked will, of course, depend upon the nature of the study. The researcher should bear in mind that the interview should not be considered a one-way street, but rather an exchange of information. He should be prepared to offer non-confidential data on probable market size, property requirements, or material characteristics to ease the flow of information. [Pg.68]

Helix-electrodes contact peripheral nerves on a small area due to their open structure. They consist of a silicone rubber substrate with one or two embedded platinum wire electrodes (Fig. 1). They were developed at the Huntington Medical Research Institute (HMRI) in a monopolar and a bipolar version [17]. The latest versions have been applied in paralyzed people at the sacral spinal roots for micturition control and incontinence. Their advantage can be seen in the self-sizing properties due to the spiral structures when the nerve is affected by edematous swelling after the implantation trauma. [Pg.135]

Artificial electron carriers are recognizable by the active sites of different redox enzymes and specifically biocatalysts containing Fe of Mo sulfur clusters as active sites. Bipyridinium radical cations, i.e. methyl viologen radical, MV+, exhibit proper electrical and size properties to penetrate into protein structures and to mediate reduction processes at the enzymes active sites. [Pg.209]

Statistical description of the size properties of non-uniform particulate substances. Ibid., 207 369-387. [Pg.514]

The nature of the parent material is the most important factor influencing the mineral components of a soil. In particular, the textural (particle size) properties and inherent fertility are directly affected by the types of rocks and minerals found in the parent material. [Pg.238]

All reactors should meet or exceed ASME Boiler and Pressure Vessel Codes with respect to appropriate materials of construction. Tlie unit should also be sized property and equipped with safety relief valves and/or rupture discs and contain appropriate piping and controls. [Pg.182]

Moreover, in spite of their holistic character, several molecular physico-chemical properties have also been calculated for substituents examples are -> molar refractiv-ity, - lipohilicity, and - surface areas size properties of the substituents are often represented by Sterimol parameters. [Pg.425]

Because of the importance of size-dependent property changes to the materials sciences, size-property relationships have been studied in detail for some systems. For example, for semiconductors, size effects become important when the particle diameter is close to the Bohr diameter of excitons in the bulk phase. Generally, semiconductor size quantization effects (relevant for naturally occurring metal sulfides, for example) appear when particles are less than 10 nm in diameter (Vogel and Urban 1997). [Pg.1]

Concerning the microscopic origin of the local off-centre instabilities, most common explanations are based on steric effects (differences of ionic radii and/or electrostatic effects) [94,100,110,112,178] but it is not satisfactory because there are many exceptions to this rule. For example, it can be observed in Table 1 that Li+ remains on-centre in NaCl, NaBr, KBr and RbCl lattices despite the smaller size of the impurity with respect to the substituted cation. Qualitative PIT models have been proposed by several authors [20,110-113] considering the admixture of the ground state with different excited states. It should also be noted that a model based exclusively on size properties would always provide the same kind of distortion, i.e. in the < 111 > direction and could not be able to explain that Li+ goes in < 111 > or <110> directions. We believe that this can only be explained taking into account the chemical bond like in PIT models. [Pg.423]

Details of the particle property model may be found in Kiparissides et al M,2] and Chiang and Thompson [3]. Following an approach used by Dickinson [4J and Gorber [5], the development was based on an age distribution analysis in which the classes of particles born between any time, t and T+dt, were followed through the reactor. The result was a series of differential equations in the total particle size properties (diameter, area and volume), the number of particles, conversion and the initiator and emulsifier levels in the reactor. [Pg.210]

As mentioned in the previous section, hollow zeolite spheres of LTA, FAU, BEA, MFI can be prepared in the presence of polystyrene beads as templates by using an LBL self-assembly technique. Recently, several research groups have tried to adopt similar methods to synthesize zeolite-template composites on the surfaces of templates with various shapes and sizes, properties, and structures through self-assembly or in situ-crystallization approaches. Subsequent removal of the templates forms zeolite materials with analogical skeletons of the templates. Up to now, the reported templates include microspheres, carbon fibers, polyurethane foams, and microbe structures,[144,145] as well... [Pg.248]

We come now to one of the principal difficulties in the field of aerosol measurements, namely, the determination of chemical composition. The difficulties stem from a number of factors. Aerosols formed under uncontrolled circumstances such as many industrial emissions or the ambient aerosol are often multicomponent. Compo.sitlons differ significantly from particle to particle an individual particle may be a highly concentrated solution droplet containing insoluble matter such as chains of soot particles. The size composition probability density function (Chapter I) can be used to characterize the chemicals and size properties of such systems (but not their morphology). [Pg.174]

Thus cluster chemistry enables the control of a specific size-property relationship for many solid-state nanomaterials and helps overcome the size limitations of lithography, because it enables the tailoring of building units for nanoscale devices. [Pg.1342]

Hatch T, Choate SP. Statistical Description of Size Properties of Non-Uniform Particle Substances. Frankhn Institute, 1929 207, 369. [Pg.139]


See other pages where Size properties is mentioned: [Pg.224]    [Pg.111]    [Pg.11]    [Pg.436]    [Pg.219]    [Pg.284]    [Pg.496]    [Pg.201]    [Pg.28]    [Pg.206]    [Pg.5942]    [Pg.699]    [Pg.3068]    [Pg.439]    [Pg.168]    [Pg.421]    [Pg.172]    [Pg.131]    [Pg.410]    [Pg.5941]    [Pg.84]    [Pg.145]   
See also in sourсe #XX -- [ Pg.12 ]




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Effect of Particle (Grain) Size on Properties

Effect of Physical Properties on Drop Size

Effect of Surface Treatment and Sizing on Composite Properties

Electric properties size effect dipole moment

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Grain size properties

Inverse micelle size calculated from the dielectric property

Nano-sized metal particles chemical properties

Nano-sized metal particles physical properties

Nano-sized metal particles properties

Optical fluorescence microscopy molecular dye size and properties

POPOP molecule size and properties

Particle Size Distribution and Application Properties of Pigmented Media

Particle Size Effects on the Photoelectrochemical Properties

Particle properties size distribution

Particle size and properties

Particle size conductivity properties

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Particle size effect electrocatalytic properties

Particle size properties

Particle size, measurement properties

Pellets, properties size distribution

Physical Properties and Drop Size

Physical Properties with Size Introduction

Primary properties characteristic particle size

Primary properties mean size

Primary properties particle size distribution

Product properties quantum size effect

Properties of Feed Materials Affecting the Sizing Process

Properties of Size Distributions

Properties packing, size

Single-particle properties mean size

Size and Properties

Size and structural properties of vesicles

Size catalytic property

Size distribution properties

Size physical properties

Size reduction properties

Size-dependent optical properties

Size-dependent properties

Size-dependent properties Magnetic

Size-property relationship

Size-selective electrocatalytic properties

Supported size-dependent properties

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