Preliminary laboratory studies

Based on data from a laboratory-scale study, preliminary costs for capital and operating and maintenance (O M) expenses were estimated for a corona discharge reactor that could treat water containing 4200 parts per billion (ppb) of carbon tetrachloride (with a flow rate of 25 gpm). The liquid corona technology s O M costs were 50% lower than those of the air-stripping/granular activated carbon (GAC) process and were 74% lower than those of the ultraviolet(UV)/oxidation process (D11866L, pp. 1030-1031). 

A. Chatteijee, Behaviour of anionic arsenic compounds in microwave system with nitric acid and hydrogen peroxide - preliminary laboratory study, Sci. Total Environ., 228 (1999), 25-34. 

Following successful preformulation studies, the API is transferred to the formulations laboratory for preliminary product design and development studies. In most cases, the drug is mixed with an appropriate diluent or... 

Its research foundation is sound. Over the past sixty years, there have been eight hundred reports on basic laboratory studies involving elderberry. Preliminary evidence reveals that the fruits diuretic proper-... 

The laboratory study of the communication system KomPaKt was guided by a questionnaire and divided into three parts a preliminary interview, an introduction and a test. 

I.J di tipn. Solutions were irradiated in sealed borosilicate or quartz test tubes held in a merry-go-round apparatus ensuring uniform illumination. A Rayonet Model RPR-100 photoreactor (Southern New England Ultraviolet Co., Hamden, CT) equipped with 16 RPR-3500 "blacklight lamps or 16 RPR-3000 "sunlight lamps was used in preliminary laboratory studies of PCB photolability. For solution phase experiments a 1.0 mg/L petroleum ether solution of Aroclor 1254 was studied. Periodically, irradiated samples were subjected to direct analysis by capillary electron capture gas liquid chromatography (EC-GLC). The photolability of PCB on surfaces was determined by irradiation of neat Aroclor 1254 thin films (18 ug/cm ) on glass Petri plates fitted with borosilicate glass covers. After irradiation plates were withdrawn from the photoreactor and the PCB residue dissolved in 2 X 5 mL of hexane for EC-GLC analysis. 

Black, H.R., Griffith, R.S. and Brickler, J.R (1963) Preliminary laboratory studies with capreomycin. Antimicrobial Agents and Chemotherapy, 161, 522-529. 

One during the laboratory phase (preliminary study). This is mainly concerned with the question whether the synthetic route should be followed further or not. 

During feasibility studies, preliminary estimates of repeatability should be obtained. Selected sera from a bank of reference sera used to determine the assay s D-SN and D-SP can be tested using a series of runs of the assay within the same laboratory. It is useful to have several operators of the assay system do this exercise independently. This will provide an indication of assay repeatability that addresses the... 

A list of controlled substances will depend on their toxicity and stability in the environment, technological processes of destruction and utilisation and may be definitely determined only after preliminary laboratory studies on the primary means of WA migration and transformation and establishment of their main transformation products. 

Chemoreception is probably important to sea turtle orientation however, to date only the most preliminary laboratory studies have been... 

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