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Selections process

Figure B3.4.6. Reaction probabilities for the initial-state-selected process H2(v = 0,J = 0)+OH(v,y = 0) — H2O+H, for zero total angular momentum. Taken from [75] with pennission. Figure B3.4.6. Reaction probabilities for the initial-state-selected process H2(v = 0,J = 0)+OH(v,y = 0) — H2O+H, for zero total angular momentum. Taken from [75] with pennission.
The ability of living organisms to differentiate between the chemically similar sodium and potassium ions must depend upon some difference between these two ions in aqueous solution. Essentially, this difference is one of size of the hydrated ions, which in turn means a difference in the force of electrostatic (coulombic) attraction between the hydrated cation and a negatively-charged site in the cell membrane thus a site may be able to accept the smaller ion Na (aq) and reject the larger K (aq). This same mechanism of selectivity operates in other ion-selection processes, notably in ion-exchange resins. [Pg.124]

The descriptor set can then be reduced by eliminating candidates that show such bad characteristics. Optimization techniques such as genetic algorithms (see Section 9.7) are powerful means of automating this selection process. [Pg.490]

For purely alicyclic compounds, the selection process proceeds successively until a decision is reached (a) the maximum number of substituents corresponding to the characteristic group cited earliest in Table 1.7, (b) the maximum number of double and triple bonds considered together, (c) the maximum length of the chain, and (d) the maximum number of double bonds. Additional criteria, if needed for complicated compounds, are given in the lUPAC nomenclature rules. [Pg.18]

The original German process used either carbonyl iron or electrolytic iron as hydrogenation catalyst (113). The fixed-bed reactor was maintained at 50—100°C and 20.26 MPa (200 atm) of hydrogen pressure, giving a product containing substantial amounts of both butynediol and butanediol. Newer, more selective processes use more active catalysts at lower pressures. In particular, supported palladium, alone (49) or with promoters (114,115), has been found useful. [Pg.107]

Table 9. Selected Processes for Leaf Protein Concentrate Production, 1993... Table 9. Selected Processes for Leaf Protein Concentrate Production, 1993...
Once the need for a LIMS has been justified, specifications have been written, and available vendors surveyed, the LIMS selection process begins. Each vendor s product must be evaluated for conformance to the specification and flexibiUty for future modifications. If an adequate solution is not available commercially, consideration must be given to constmcting a custom LIMS solution. This could be done in-house or by contractors. If the custom option is preferred, resources needed for future modifications and maintenance should be factored into the cost. [Pg.520]

Defining the requirements for a pilot-plant control system is often difficult because process plant experience for comparison and evaluation is commonly lacking and the design is frequentiy performed by personnel inexperienced in either instmmentation systems or pilot-plant operations. The isolated and often intermittent nature of pilot-plant operations also inhibits evolution and promotes individual unique installations. This compHcates the selection process. [Pg.42]

Any program developed in-house must be easy to use, or user-friendly. If the program has various options for input, analysis, computation, and output, then it must provide the user with a fast way to select them. To meet this need, the system is likely to be menu-driven. The peripheral interactive devices such as mice, joysticks, light pens, graphic tablets, and templates are helpful and often used to expedite the selection process. [Pg.65]

The tube-to-tubesheet joint, how is it made Many use O rings to add another material to the selection process. Preference should be given to a fusing technique of similar material. [Pg.1087]

Precoat Procedure Precoat filtration tests are run in exactly the same manner as bottom-feed tests except that the leaf must first be precoated with a bed of diatomaceous earth, perhte, or other shave-able inert sohds. Some trial and error is involved in selecting a grade of precoat material which will retain the filtered solids to be removed on the surface of the bed without any significant penetration. During this selection process, relatively thin precoat beds of I to 2 cm are satisfactory. After a grade has been selected, bench-scale tests should be... [Pg.1698]

Assistance in problem definition and in developing a test program should be sought from persons experienced in the field. If your organization has a consultant in separations of this land, by all means m e use of the expertise available. If not, it may be wise to employ an outside consultant, whose special knowledge and guidance can save time, money, and headaches. It is important to do this early after the separation equipment has been installed, there is httle a consultant can do to remedy the sometimes disastrous effects of a poor selection. Often it is best to work with established equipment manufacturers throughout the selection process, unless the problem is unusually sensitive or confidential. Their experience with problems similar to yours may be most helpful and avoid many false starts. [Pg.1749]

Approximate ranges of space velocities in rotaiy Idlns, metric tons/(m d), of selected processes are as follows ... [Pg.2126]

Introduction Theprevious sections dealt with techniques for the identification of hazards and methods for calculating the effects of accidental releases of hazardous materials. This section addresses the methodologies available to analyze and estimate risk, which is a function of both the consequences of an incident and its frequency. The apphcation of these methodologies in most instances is not trivial. A significant allocation of resources is necessary. Therefore, a selection process or risk prioritization process is advised before considering a risk analysis study. [Pg.2275]

Carefully and deliberately select process chemicals and synthesis route... [Pg.13]

Investigations of incidents associated with tolling projects have identified that appropriate selection of a toller based upon proper equipment and expertise is important in reducing the likelihood of future process safety related incidents and environmental releases. It is likewise important to review toller safety, health, and environmental practices (current and past) in the selection process. This review can identify those practices that would need to be modified to be acceptable. Eliminating less qualified candidate firms at an early stage is a best practice. [Pg.13]

The technology package for the toll should be at least partially established prior to starting the active search for a toller. This will assist you in defining the level and areas of expertise needed for the project. Some companies that frequently let toll contracts have internal service groups that assist in the toller selection process. An example of an internal questionnaire used at such a company is shown in Example 2-1. It is an excellent way to identify the expertise required for a specific tolling project. [Pg.15]

However, just asking the purchasing department for a list of companies previously used for tolling is not enough. Prior successful use of a given firm is not adequate qualification for future tolls, especially if the new toll involves a different product. At this point in the selection process the five facets mentioned in the previous chapter come into play ... [Pg.20]

In this phase of the toller selection process, we assume the long list became a short list and now one or more candidate tollers from the short list will be given an opportunity to prepare a commercial bid. This by no means indicates the short listed tollers are perfect. There may be deficiencies that need to be corrected in concert with the client. With proper effort, one will be successful and be engaged for the toll. Sometimes it is appropriate to decide on a backup toller, as complications can develop that prevent the primary candidate from executing the project as originally planned, due to an incident in their plant, departure of key personnel, or unexpected production demands on the toller. [Pg.39]

A confidentiality agreement is frequently required prior to the final selection process. Depending on the process technology, a confidentiality agreement may be required during initial discussions with the toller. Alternately, it may be included in the request for bid or when the final contract is executed. [Pg.40]

Some companies that let toll contracts do not visit a site until this last phase in the toller selection process and would need a signed agreement to make the visit and discuss proprietary aspects of the project. [Pg.40]

It is incumbent upon the toller to develop and follow internal management systems as appropriate to support business needs, production needs, process safety, environmental responsibility, and worker health. The selection process should have considered whether or not satisfactory systems are in place. Nevertheless, the contract or auxiliary documents may be the vehicle used to help ensure that the system reviewed is the system actually used for completing the toll in question. Within the process safety management system, the management of change and training elements are essential subsystems. [Pg.62]


See other pages where Selections process is mentioned: [Pg.17]    [Pg.112]    [Pg.301]    [Pg.67]    [Pg.79]    [Pg.94]    [Pg.154]    [Pg.81]    [Pg.441]    [Pg.1722]    [Pg.11]    [Pg.13]    [Pg.14]    [Pg.14]    [Pg.16]    [Pg.18]    [Pg.20]    [Pg.22]    [Pg.24]    [Pg.26]    [Pg.28]    [Pg.30]    [Pg.32]    [Pg.34]    [Pg.36]    [Pg.38]    [Pg.40]    [Pg.42]    [Pg.44]   
See also in sourсe #XX -- [ Pg.6 , Pg.7 , Pg.8 ]




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Adsorption process selection matrix

Adsorption processes selection

Alpha-select process

Amorphous process selection

Assumptions About Selection Processes

Azeotropic process selection

Basis for selecting a process method

Battery selection process

Candidate-selection process

Case study process selection

Catalytic distillation process selection

Catalytic processes, selectivity

Chemical processing cycle selection

Chemical processing materials selection

Chemical processing selective hydrogenation

Chemical reaction process selection and design

Chemical reaction processes factor range selection

Chemical selective oxidation processes

Complex distillation processes selecting

Contractor management selection process

Crystallization in Some Selected Processes

Decision process architecture selection

Device selection process

Digital filter selection process

Employee Perceptions of Organizational Processes Selection, and Training

Enzyme processes, selectivity

Equipment Selection and Process Design

Ethanolamine processes selection

Executive selection process

Extraction process selection

Extraction processes dispersed phase selection

Extraction processes solvent selection

Fischer-Tropsch process product selectivity control

Guidelines for Selecting Batch Processes

Heterogeneous process methanol formation selectivity

Hydrogen-selective membrane reactor process

Immiscible process selection method

Industrial project selection process

Integration of Selective Membranes in Chemical Processes Benefits and Examples

Interfacial processes selectivity coefficient

Isotope Fractionation Processes of Selected Elements

Joining process selection

Joining processes selection strategy

Manufacturing process selection

Manufacturing processes selection strategies (

Mass transport processes selectivity

Material and manufacturing process selection

Material selection manufacturing process

Material selection processing, importance

Material/process selection checklist

Metals processing materials selection

Metals processing test selection

Mobil Selective Dewaxing process, zeolite catalysts

Molecular selection, process

Natural selection, reaction-diffusion process

Partner selection process

Paths selection process

Pharmaceutical information systems selection process

Plastic parts design process selection

Polymer Selection for the HME Process

Powerforming process selection

Process Equipment Selection

Process Selection Conclusions

Process Selection — Considerations

Process and material selection

Process control sample size selection

Process fluid location, selection

Process hazard analysis methodology selection

Process hazard analysis selection

Process measurements selection criteria

Process parameters methanol formation selectivity

Process parameters methanol selectivity

Process safety toller selection

Process selection Guidance Standard

Process selection Management standard

Process selection Standard

Process selection advantages

Process selection assembly systems

Process selection benefits

Process selection design recommendations

Process selection disadvantages

Process selection drivers

Process selection guide

Process selection influencing factors

Process selection joining processes

Process selection management systems

Process selection manufacturing processes

Process selection overview

Process selection purpose

Process selection strategies

Process selection summation

Process selection system

Process selection variabilities

Process selectivity

Process selectivity

Process systems engineers material selection

Process-specific selection

Processes Mobil selective dewaxing

Processing method selection

Processing selection

Processing selection

Project selection process, industrial energy

Qualification process, toller selection

Recruitment and selection process

References process selection

SELECTING PLASTIC AND PROCESS

Selected Aspects of Production Processes

Selected Examples of Industrial Processes

Selected Geochemical Processes

Selected Industrial Processes with PTC

Selected Processes

Selected Processes

Selected Trades Biome Ecosystem Processes

Selected conversion processes

Selected unit process operations

Selecting Process

Selecting Processing

Selecting a Process

Selecting candidate processes

Selecting the Process Fluid Location

Selecting the Process and Technology

Selection for commercial SCF food processing plants

Selection of Process Equipment and Materials

Selection of Solvents for Other Separation Processes

Selection of Spinning Process

Selection of a Computation Process

Selection of a primary process

Selection of a separation process

Selection of pumps for drying processes

Selection of the Process Design

Selection or Design of a Leaching Process

Selection process compatibility

Selection process contamination levels

Selection process filter size

Selection scheme of the material and process

Selective ActiNide Extraction process

Selective Catalyst Reduction Process

Selective Catalytic Reduction The SCR Process

Selective Catalytic Reduction process

Selective Cu deposition process

Selective Ethylene Oxidation by the Wacker Process

Selective catalytic membrane process

Selective flotation process

Selective process control

Selective process development

Selective separating processes

Selective soldering processes

Selectivity Fischer-Tropsch process

Selectivity vinyl acetate monomer process

Separation processes selection

Separation technologies/processes selectivity improvement

Shape-selective zeolite process

Single-line capacities for selected separation processes

Solvent and Process Selection

Some Selected Cells Are Subjected to the Transformation Process

Staff selection processes

Steps in the Selection Process

Sulfur dioxide removal processes selection

Supplier Selection Process

Sweetening process, selective

Synthesis process selection

The Influences of Recruitment Processes and Selection Predictors on New Employee Safety

The Path Selection Process

USE OF PRESS FOR MODEL STRUCTURE SELECTION IN PROCESS IDENTIFICATION

USE OF PRESS FOR PROCESS MODEL SELECTION

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