Big Chemical Encyclopedia

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

Articles Figures Tables About

Manual work

Work operations are operations which form part of the above processes but include manual work, knowledge work, and management work associated with these processes. [Pg.464]

Low throughput, high degree of manual work Present, applications driven... [Pg.350]

When dispersing the insectoacaracide dimethoate, widely used even today, from tractor-based sprayers, air concentration reached 9.0 mg/m3, a level unacceptable for humans (the old public health standard was 0.3 mg/ m3 the standard was then rounded up to 0.5 mg/m3 [10]). People are still permitted to carry out manual work in fields just 10-20 days after dimethoate treatment [7, A13]. [Pg.52]

Up to this point, it was considered that universities were where discoveries were made and industry was where they were put to some practical use. This separation between basic and applied work was quite prominent at this juncture and continues in many areas even today in some fields of work though the difference has decreased. But in polymers, most of the basic research was done in industry, having as its inception the decision by DuPont to bridge this unnatural gap between fundamental knowledge and application. In truth, they can be considered as the two hands of an individual, and in order to do manual work both hands are important. [Pg.745]

Skeletal fluorosis can be defined as excessive deposition of fluoride in bone. This is a pathological condition that is by far the most important aspect of chronic exposure to elevated levels of fluoride, either by inhalation or by ingestion. The skeletal deformities may be associated with or accentuated by nutritional deficiencies or even malnutrition and hard manual work or, possibly, other conditions found in areas of long-term social and nutritional deprivation [6]. See, for instance Fig. 1 of [54]. The situation is specific also for populations consuming large volumes of water, such as athletes or people with certain medical conditions or... [Pg.497]

The metal surfaces must be accessible for manual working. Suitable manholes and gateways are to be... [Pg.72]

The heater for the reaction chamber and the conductors were printed on the lowest layer and electrically contacted to the pads on the cover layer by vertical metal-filled vias in every intermediate layer. Still some manual work was necessary to shape the reaction channel from the pre-fired tapes. Also the soldering of clamp-type fittings to the cover layer is certainly difficult to automate. However, a manufacturing process for ceramic foil reactors seems to be within reach. [Pg.619]

If one is confronted with expensive manual work with low complexity, a typical industrial approach would be to automate such a standard manual procedure. This will not only reduce costs of staff but will also increase the reproducibility of the coating procedure, which is an extremely important fact in catalyst development. [Pg.623]

An operator s work in chambers is very unhealthy, particularly when removing the finished product from the chambers during which gas masks must be worn. It is no wonder that efforts have been made to mechanize this unpleasant manual work. Today, practically all over the world the manufacture of bleaching powder is mechanized and chambers are a thing of the past. [Pg.351]

Hasenclever s apparatus has many advantages as compared to the chamber system. It is rather small, requires less manual work, and the health of the operators is not threatened by the chlorine, which escapes into the atmosphere. A drawback is the rather low output caused by the insufficiently quick removal of the reaction heat which makes it impossible to use more concentrated chlorine. The periodical cleaning of the cylinders from sediments as well as repair of the equipment involves frequent interruptions of the operation. [Pg.353]

In manual work, method selection can be performed by manual inspection of the predicted chromatograms for resolution and run time, or according to the user-dehned automated rating process. The automated selection process can be customized on a similar basis as the selection process in method optimization software, with requirements based on targeted run time, resolution, or a combination of the two this suitability approach is described in equation (10-5) ... [Pg.528]

High-performance liquid chromatography (HPLC) provides an excellent platform to carry out these measurements. The computer-controlled HPLC with automated sample handling, injection and computerised data acquisition and processing makes possible the measurement of hundreds of samples per week without too much manual work. The measurements are made by running overnight and at weekends so this requires... [Pg.544]

The factory of Bofors has experienced a few explosions caused by ignition in the extruders. Tire ignition was by a foreign object produced in the extruded matciial. The remote control operation gives a higlier safety level. Ihis new method reduces the manual work and the exposure to nitroglycerine and increases the safety of the manufacture. [Pg.310]

A study on the CNS depressing effects of toluene (2.73), ethylbenzene (3.15), and xylene (3.15), singly and in combinations, showed that CNS effects were increased when exposures were to mixtures. The enhanced effects observed were modest when employees were at rest, but were significantly higher when workers were exercising or performing manual work. The authors attributed the observed effects to pharmacokinetic interactions of the mixture elements. 44 ... [Pg.204]

Using different initial concentrations or adsorbent amounts, the relevant concentration range is covered. The method is easily expanded to multi-component mixtures, where the loading is a function of all components present. Drawbacks are the time consuming preparations of the different mixtures and the transferability of the results to packed columns (e.g. uncertainty in phase ratio/porosity). Because of the numerous steps of manual work and the uncertainty when equilibrium is reached, the accuracy is not too high. [Pg.277]

Mode of operation An integrator tool must operate incrementally rather than batch-wise. It is used to propagate changes between interdependent documents. This is done in such a way that only actually affected parts are modified. As a consequence, manual work does not get lost (in the above example the elaboration of the simulation model), as it happens in the case of batch converters. [Pg.227]

Reduction of Administration Cost Without the electronic process, the cost of exchanging information between the company and the trustee involves lots of manual work, use of paper documents, delivery charges and time delay due to delivery time. Using electronic information exchange, all these processes can be done speedier and at much lower cost. [Pg.19]

A5 civilizations evolved and division of labour became more specialized, this group became more set apart. ]t did not have to do much manual work and had the leisure to speculate on the nature of the world. This group of people, the eady philosophers came up with the first scientific theories. [Pg.12]


See other pages where Manual work is mentioned: [Pg.325]    [Pg.96]    [Pg.38]    [Pg.233]    [Pg.218]    [Pg.85]    [Pg.42]    [Pg.218]    [Pg.370]    [Pg.153]    [Pg.23]    [Pg.60]    [Pg.173]    [Pg.170]    [Pg.311]    [Pg.340]    [Pg.273]    [Pg.6]    [Pg.26]    [Pg.26]    [Pg.136]    [Pg.546]    [Pg.37]    [Pg.42]    [Pg.86]    [Pg.416]    [Pg.1167]    [Pg.244]    [Pg.429]    [Pg.150]   
See also in sourсe #XX -- [ Pg.159 ]




SEARCH



© 2024 chempedia.info