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Structural support

Related studies have been made using perchloric acid. From mixtures of anhydrous nitric and perchloric acids in the appropriate proportions, Hantzsch " claimed to have isolated two salts whose structures supported his hypothesis concerning the nature of nitric acid in strong mineral acids. He represented the formation of the salts by the following... [Pg.14]

Air-cooled heat exchangers include a tube bundle, which generally has spiral-wound fins upon the tubes, and a fan, which moves air across the tubes and is provided with a driver. Electric motors are the most commonly usea drivers typical drive arrangements require a V belt or a direc t right-angle gear. A plenum and structural supports are basic components. Louvers are often used ... [Pg.1077]

The effective therm conductivity values generally obtained in practice are at least a factor of two greater than the one-dimensional thermal conductivity values measured in the laboratoiy with carefully controlled techniques. This degradation in insulation thermal performance is caused by the combined presence of edge exposure to isothermal boundaries, gaps, joints, or penetrations in the insulation blanket required for structure supports, fill and vent hnes, and high lateral thermal conductivity of these insulation systems. [Pg.1135]

The structures supporting the IPB, at bends and tee-offs particularly, are adequately reinforced to sustain the excessive forces that may arise on a fault and... [Pg.936]

Depending on the accessibility afforded by adjacent equipment, aged ladders and access platforms are often quoted as options by vendors. Square body configuration systems (plan view) have square body and plenum sections. Safety handrails surrounding the plenum are standard. Structural supports are usually optional, the height of which depends on system location. Figures 3 and 4 provide sketches of the two basic configurations. [Pg.338]

Ozonation systems are comprised of four main parts, including a gas-preparation unit, an electrical power unit, an ozone generator, and a contactor which includes an off-gas treatment stage. Ancillary equipment includes instruments and controls, safety equipment and equipment housing, and structural supports. The four major components of the ozonation process are illustrated in Figure 8. [Pg.491]

Laser and beam transport structural support systems... [Pg.876]

Figure 44.43 illustrates a typical structural-support system. The natural frequencies of all support structures, piping, and other components are functions of mass, span, and stiffness. Each of the arrows on Figure 44.43 indicates a structural member or stationary machine component having a unique natural frequency. Note that each time a structural span is broken or attached to another structure, the stiffness changes. As a result, the natural frequency of that segment also changes. [Pg.741]

Most baghouse systems are provided as complete assemblies by the vendor. While the unit may require some field assembly, the vendor generally provides the structural supports, which in most cases are adequate. The only controllable installation factors that may affect performance are the foundation and connections to pneumatic conveyors and other supply systems. [Pg.779]

The foundation must support the weight of the baghouse. In addition, it must absorb the vibrations generated by the cleaning system. This is especially true when using the shaker-cleaning method, which can generate vibrations that can adversely affect the structural supports, foundation, and adjacent plant systems. [Pg.779]

Note The motor position on the baseplate must be adjusted in order to align the equipment, which may require machining or grinding of the rabbet fit. Remember, however, the rabbet fit is only a positioning device and is not a structural support. [Pg.930]

Fig. 3.32 Simple propagating structures supported by two elementary fe = 2, r = 1 class c2 rules. Fig. 3.32 Simple propagating structures supported by two elementary fe = 2, r = 1 class c2 rules.
Fig. 5.5 Local action of the topological operator with which any number of distinct structures supporting exactly the same global dynamics can be constructed. The various quantities are defined in equation (5.27). Solid lines represent 2-cycles. Fig. 5.5 Local action of the topological operator with which any number of distinct structures supporting exactly the same global dynamics can be constructed. The various quantities are defined in equation (5.27). Solid lines represent 2-cycles.
Acknowledgments. Dr. M. F. Mansuetto is thanked for his assistance with the computer drawings of the various structures. Support from the U.S. Depart-... [Pg.317]

Consider overall compatibility and practicality of all materials and parts in component as a system Does it meet functional and performance requirements Is it compatible with other components that may interact with it, relative to effects of expansion and contraction, structural support or movement,... [Pg.8]

Quadraxially oriented (four directional layer) glass fabric-TS vinyl ester polyester RP sheet panels with a foam core and gel coating are used. Most of the panels are 3 mm thick with molded-in rib structure supports. Body skins are bonded to the chassis with a double-stick acrylic tape developed by 3M Co. as well as mechanical fasteners. Unlike most steel designs, no B-pillar structural component between the front and rear doors is required thus providing more interior space and easy entry since doors open in opposite directions. [Pg.255]

Category of glial cells in the vertebrate central nervous system with long radial processes. Astrocytes provide structural support to neive cells and help to control their chemical and ionic extracellular environment. [Pg.223]

In biology, extracellular matrix (ECM) is the extracellular part of animal tissue that usually provides structural support to the cells in addition to performing various other important functions. ECM is the defining feature of connective tissue in animals. ECM includes the interstitial matrix and the basement membrane. [Pg.491]

Trimerization to isocyanurates (Scheme 4.14) is commonly used as a method for modifying the physical properties of both raw materials and polymeric products. For example, trimerization of aliphatic isocyanates is used to increase monomer functionality and reduce volatility (Section 4.2.2). This is especially important in raw materials for coatings applications where higher functionality is needed for crosslinking and decreased volatility is essential to reduce VOCs. Another application is rigid isocyanurate foams for insulation and structural support (Section 4.1.1) where trimerization is utilized to increase thermal stability and reduce combustibility and smoke formation. Effective trimer catalysts include potassium salts of carboxylic acids and quaternary ammonium salts for aliphatic isocyanates and Mannich bases for aromatic isocyanates. [Pg.226]

Scientists from Politecnico di Milano and Ineos Vinyls UK developed a tubular fixed-bed reactor comprising a metallic monolith [30]. The walls were coated with catalytically active material and the monolith pieces were loaded lengthwise. Corning, the world leader in ceramic structured supports, developed metallic supports with straight channels, zig-zag channels, and wall-flow channels. They were produced by extrusion of metal powders, for example, copper, fin, zinc, aluminum, iron, silver, nickel, and mixtures and alloys [31]. An alternative method is extrusion of softened bulk metal feed, for example, aluminum, copper, and their alloys. The metal surface can be covered with carbon, carbides, and alumina, using a CVD technique [32]. For metal monoliths, it is to be expected that the main resistance lies at the interface between reactor wall and monolith. Corning... [Pg.194]

The design of the Pd-membrane reactor was based on the chip design of reactor [R 10]. The membrane is a composite of three layers, silicon nitride, silicon oxide and palladium. The first two layers are perforated and function as structural support for the latter. They serve also for electrical insulation of the Pd film from the integrated temperature-sensing and heater element. The latter is needed to set the temperature as one parameter that determines the hydrogen flow. [Pg.288]

Figure 13. CO oxidation over 13 atoms gold clusters having different three-dimensional structures supported on Mg(OH)2 [30]. Figure 13. CO oxidation over 13 atoms gold clusters having different three-dimensional structures supported on Mg(OH)2 [30].
The reverse ME technique provides an easy route to obtain monodispersed metal nanoparticles of the defined size. To prepare supported catalyst, metal nanoparticles are first purified from the ME components (liquid phase and excess of surfactant) while retaining their size and monodispersity and then deposited on a structured support. Due to the size control, the synthesized material exhibits high catalytic activity and selectivity in alkyne hydrogenation. Structured support allows suitable catalyst handling and reuse. The method of the catalyst preparation is not difficult and is recommended for the... [Pg.297]

Preparation of catalysts starting from (commercially available) pre-shaped or structured supports is attractive, because a support with optimal properties can be selected. This facilitates catalyst development very much because a choice can be made from a wide variety of commercially available supports. [Pg.80]

Subsequently, Mitchell s group in Vancouver, by means of a tensor-LEED study17 of the Cu (110)-(2 x 3)N surface structure, supported a reconstruction model in which the topmost layer is described as a pseudo-(100)-c(2 x 2)N overlayer with metal corrugation of about 0.52 A in the reconstructed layer. Each nitrogen adatom is almost coplanar with the local plane formed by the four neighbouring copper atoms. Of the four N atoms present in the unit mesh, three are also bonded to Cu atoms in the layer below and therefore are five coordinate. [Pg.142]


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See also in sourсe #XX -- [ Pg.4 , Pg.5 ]

See also in sourсe #XX -- [ Pg.1475 ]




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Air-supported structures

Alumina support surface structure

Catalyst supports support structure

Chemical structures polymeric supports

Collocated monolith support structure

Collocated monolith support structures COMOSS)

Collocated monolithic support structures

Control support structure expansion

Electronic Structure of Naked, Ligated and Supported Transition Metal Clusters from First Principles Density Functional Calculations

Electronic structure of supported clusters

Flexible continuum structure solar collectors support

Inflatable continuum structure solar collectors support

Layered support structure

Membrane support structure

Myosin structure supporting

Optimization of Supported Membrane Structures

Other Structural Support Mounting

Oxidation of Methane on Supported Palladium Under Lean Conditions Kinetics, Structure and Properties

Oxide support effect molecular structure

Personal Responsibility and Supporting Social Structures

Plants structural support

Polymer electrolyte membrane fuel cell support structure

Polymer supports structure

Scaffolds synthetic support structures

Self-supporting structures

Silica support surface structure

Silica supports column packing structure

Social structures supporting

Solar collectors support structure

Strong metal-support interaction structure

Strong metal-support interactions (SMSI) and electronic structures In situ atomic resolution ETEM

Structural Cryogenic Supports

Structural changes, alumina-supported

Structural support applications

Structural support, storage

Structure and Surface Properties of Oxidic Supports

Structure of Catalyst Supports by Spectroscopy with Particular Reference to Spillover and Hydrogen Diffusion

Structure of small supported gold particles

Structure supported metal complexes

Structure supported metal nanoclusters

Structure supported transition metal catalysts

Structure-supported platform

Structure-supported platform arrangement

Structured supported ionic liquid-phase

Support and Structural Promoter Effects

Support structures

Support structures

Support, packing structure

Supported Monolithic Structures

Supported amorphous silica structure

Supported liquid membranes facilitating membrane structures

Supported liquid membranes structures

Supported membranes structure transport properties

Supported metal nanoclusters structural characterization

Supported metal oxides molecular structures

Supported metals crystal structure change

Supported metals structure sensitivity

Supported metals, small particles crystal structure change

Supported metals, small particles structure sensitivity

Supported structure

Supported structure insensitive reaction

Supported structure sensitive reaction

Supporting reconstituted membrane structure

Supporting structure

Supporting structure

Supporting structures design considerations

Supporting structures osmetrichia, muscles

Supports supported monolithic structures

Suspension Polymerized Particulate Resin Supports Structural and Morphological Variants

Synthesis and structure of polymer supports

Synthetic support structures

Tortuosity support structure

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