Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Objectives secondary

The number of objectives that should be incorporated in any clinical trial is often a topic of considerable debate among study teams. One argument often propounded is that, while taking all the trouble to conduct the trial, why not collect as much data as possible and ask as many questions as possible This approach leads to a large number of study objectives, sometimes broken down into primary objectives, secondary objectives, and even tertiary objectives. Proponents of this... [Pg.169]

Every protocol must state a primary, quantifiable study objective. Secondary objectives should be limited in scope and related to the primary question. Objectives must be specific and capable of answering a key clinical question required by the CDP. [Pg.29]

Once basic requirements and secondary objectives have been established, the prospective purchaser will find it easier to discuss details with sales representatives. From the latter s viewpoint, it is easier to talk to a potential customer who knows what he needs from a mass spectrometer system rather than to a customer who has only a vague idea of what is required. In fact, an uninformed customer can end up purchasing an expensive instrument that is far too good for the analyses required or, at the other extreme, a cheap instrument that is inadequate for immediate needs, let alone ones that might arise in the near future. [Pg.275]

Approximately 4500 tons of sodium hypophosphite [7681-53-0] NaH2P02, was produced in 1990. This material is used principally in electroless nickel plating of plastic objects. Of the secondary products made from primary phosphoms compounds, phosphoms oxychloride is manufactured in the largest volume. Phosphoms pentachloride and phosphoms sulfochloride are made from phosphoms trichloride. [Pg.383]

The objective of crusher control is usually to maximize crusher throughput at some specified product size, without overloading the crusher. Usually onlv three variables can be adjusted feed rate, crusher opening, and feed size in the case of a secondary crusher. Four modes of control for a crusher are (1) Setting overload control,... [Pg.1845]

Location of Transfer Stations Whenever possible, transfer stations should be located (1) as near as possible to the weighted center of the individual solid-waste-produciion ares to be served, (2) within easy access of major arterial highways as well as near secondary or supplemental means of transportation, (3) where there will be a minimum of pubhc and environmental objection to the transfer operations, and (4) where construction and operation will be most economical. Additionally, if the transfer-station site is to be used for processing operations involving material recovery and/or energy production, the requirements for those operations must be considered. [Pg.2241]

To test large to very large objects such as primary systems, where a laboratory test is not practical, seismic checks are established through analytical means. Similarly, for very large and heavy secondary systems such as turbines, alternators or transformers and reactors also their... [Pg.447]

Surface analysis has made enormous contributions to the field of adhesion science. It enabled investigators to probe fundamental aspects of adhesion such as the composition of anodic oxides on metals, the surface composition of polymers that have been pretreated by etching, the nature of reactions occurring at the interface between a primer and a substrate or between a primer and an adhesive, and the orientation of molecules adsorbed onto substrates. Surface analysis has also enabled adhesion scientists to determine the mechanisms responsible for failure of adhesive bonds, especially after exposure to aggressive environments. The objective of this chapter is to review the principals of surface analysis techniques including attenuated total reflection (ATR) and reflection-absorption (RAIR) infrared spectroscopy. X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES), and secondary ion mass spectrometry (SIMS) and to present examples of the application of each technique to important problems in adhesion science. [Pg.243]

Decisions affecting the future direction of the organization and its products and services are made from information gleaned through market research. Should this information be grossly inaccurate, over optimistic or pessimistic the result may well be the loss of many customers to the competition. It is therefore vital that objective data is used to make these decisions. The data can be primary data (data collected for the first time during a market research study) or secondary data (previously collected data). However, you need to be cautious with secondary data, as it could be obsolete or have been collected on a different basis than needed for the present study. [Pg.141]

As a result the research emphasis in this field focused on efforts to design experiments in which it might be possible to determine to which one of the foregoing three rate equations the observed second-order rate coefficient actually corresponded. More specifically, the objective was to observe one and the same system first under conditions in which complex decomposition (fcp) was rate-determining and then under conditions in which complex formation (kF) was ratedetermining. A system in which either formation or decomposition was subject to some form of catalysis was thus indicated. In displacements with primary and secondary amines the transformation of reactants to products necessarily involves the transfer of a proton at some stage of the reaction. Such reactions are potential-... [Pg.409]


See other pages where Objectives secondary is mentioned: [Pg.186]    [Pg.88]    [Pg.186]    [Pg.88]    [Pg.131]    [Pg.342]    [Pg.508]    [Pg.1640]    [Pg.539]    [Pg.1291]    [Pg.523]    [Pg.232]    [Pg.127]    [Pg.428]    [Pg.429]    [Pg.381]    [Pg.512]    [Pg.445]    [Pg.452]    [Pg.351]    [Pg.57]    [Pg.196]    [Pg.1027]    [Pg.145]    [Pg.262]    [Pg.340]    [Pg.358]    [Pg.66]    [Pg.213]    [Pg.253]    [Pg.925]    [Pg.770]    [Pg.216]    [Pg.287]    [Pg.551]    [Pg.777]    [Pg.114]    [Pg.163]    [Pg.114]    [Pg.61]    [Pg.218]    [Pg.196]   
See also in sourсe #XX -- [ Pg.185 ]




SEARCH



Secondary objectives and endpoints

© 2024 chempedia.info