Daily

Short-term exposure. This is the maximum concentration to which workers can be exposed for a period of up to 15 minutes continuously without suffering from (a) intolerable irritation, (b) chronic or irreversible tissue change, or (c) narcosis of sufficient degree to increase accident proneness, impair self-rescue, or materially reduce efficiency, provided that no more than four excursions per day are permitted, with at least 60 minutes between exposure periods, and provided the daily time-weighted value is not exceeded. 

This approach is particularly useful when one wishes to characterize pilot plant effluents whose daily production can be less than a liter. 

Routine production tests are performed, approximately once per month on each producing well, by diverting the production through the test separator on surface to measure the liquid flowrate, water cut, and gas production rate. The wellhead pressure (also called the flowing tubing head pressure, FTHP) is recorded at the time of the production test, and a plot of production rate against FTHP is made. The FTHP is also recorded continuously and used to estimate the well s production rate on a daily basis by reference to the FTHP vs production rate plot for the well. 

Monitoring and control of the production process will be performed by a combination of instrumentation and control equipment plus manual involvement. The level of sophistication of the systems can vary considerably. For example, monitoring well performance can be done in a simple fashion by sending a man to write down and report the tubing head pressures of producing wells on a daily basis, or at the other extreme by using computer assisted operations (CAO) which uses a remote computer-based system to control production on a well by well basis with no physical presence at the wellhead. 

If it is decided that an operation does require to be manned, then it may need to be manned on a 24-hour basis, or a 12-hour basis, or only for daily inspection. Accommodation may be provided on a separate living quarters platform or as part of an integrated platform, or on a floating hotel. 

One of the most cost effective forms of maintenance is to train the operators to visually Inspect the equipment on a daily basis. Careful selection of staff, appropriate training and incentives will help to improve what is often called first-line maintenance. 

The resource loading can be represented in percentage terms (see Figure 12.7) to give an indication of the resource weighting distribution on a daily basis and per activity. (Note Activity B has been moved to day 3 to smooth resource loading.)... 

In order to function effectively, the organisational structure should make the required flow of information for field development and management as easy as possible. For example, in trying to co-ordinate daily operations, information is required on... 

On a daily base the fiinetioning and the sensitivity of the system is tested to ensure the quality of the inspection process. 

The maximum desilvering speed is related to the maximum current the power supply will deliver. When the efficiency is high, a current of lA will recover 4g of metallic silver per hour. The daily load determines the maximum current required. A 3A unit will typically be used for up to 15 m of film per day. 

It is clear that the freight value depends on the type and amount of film and how the production is spread over time. Figure 3 shows 2 simulations of silver concentration in fixer for different processing regimes. In one case, 10 m of film is processed over 3 hours. In another case, 10 m of film is processed over 16 hours. It is clear that the silver level in the fixer not only depends on the amount of film processed, but also on the distribution of the working load. The simulated daily freight values are 44 and 16 mgW respectively. ... 

Average daily frei ht <50 mg/m for maximum 15mvday/processor ... 

Combined equipment" verification enables to check daily or on site the good working of flaw detector connected to probe. It is based on a set of simplified measurements. 

The relation between the architecture of the molecules and the spatial morphology into which they assemble has attracted longstanding interest because of their importance in daily life. Lipid molecules are important constituents of the cell membrane. Amphiphilic molecules are of major importance for teclmological applications (e.g., in detergents and the food industry). 

GenBank [32] is a text-numeric database of genetic sequences with more than 28 billion bases in 22 million sequences (January, 2003) from genetic research. The collection of all publidy available sequences is annotated with information such as sequence description, source organism, sequence length, or references. The database, estabhshed in 1967, is updated daily and produced by the National Center for Biotechnology Information (USA). 

EMBL European Bioinformatics Institute nucleotide sequence database biblio., sub- stance, se- quence 20mio nucleotide seq., 28billion nucleotides journals, author submis- sions European Bioinformatics Institute free daily http //www.e- hi.ac.uk/embl/ index.html... 

REGISTRY Chemical Abstracts Service (CAS), USA chemical substances struc- ture 22 mio struct., 25 mio sequences 9000 journals, 37 patent offices, proceedings, books STN commerdal CD-ROM, online daily www.cas.OTg... 

An ideal" drug must be safe and effective. The mavimum daily dose should not exceed 200-300 mg. Drugs should be well absorbed orally and bioavailablc. Metabolic stability ensures a reasonable long half-life. Further on, a drug should be non-... 

In order to achieve the goals of making more efficient use of the information that is produced and of planning and performing better experiments, chemoinformatics will have to be more integrated into the daily work processes of the chemist, and into the work of the bench chemist. Certainly, many chemists still have to overcome high barriers to using the computer for assistance in the solution of their daily scientific problems. 

Elemental fluorine and the fluoride ion are highly toxic. The free element has a characteristic pungent odor, detectable in concentrations as low as 20 ppb, which is below the safe working level. The recommended maximum allowable concentration for a daily 8-hour time-weighted exposure is 1 ppm. 

The adult daily nutritional requirement, which is affected by various factors include weight and size, is about 300 mg/ day. 

You are studying organic chemistry at a time of its greatest influence on our daily lives at a time when it can be considered a mature science when the challenging ques tions to which this knowledge can be applied have never been more important... 

N Nitroso amines are more often called nitrosamines and because many of them are potent carcinogens they have been the object of much investigation We encounter nitrosamines m the environment on a daily basis A few of these all of which are known carcinogens are... 

Murexide Indicator. Suspend 0.5 g of powdered murexide in water, shake thoroughly, and allow the undissolved solid to settle. Use 5-6 drops of the supernatant liquid for each titration. Decant the old supernatant liquid daily and treat the residue with water to provide a fresh solution of the indicator. 

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