Productivity maximum

The elimination of the amino donor, L-aspartic acid, resulted in an almost complete reduction of activity. Neither cell permeabilisation nor cofactor (pyridoxalphosphate) addition were essential for L-phenylalanine production. Maximum conversion yield occurred (100%, 22 g r) when the amino donor concentration was increased. Aspartic add was a superior amino donor to glutamic add 35 g l 1 was used. 

Product Maximum enthalpy mole product Experimental mole product" Calculated mole product"... 

The U.S. Food and Drug Administration (FDA) regulates the addition of nitrate and nitrite salts to fish products. Maximum permitted levels vary among products and types of fish, with up to 500 ppm residual sodium nitrate or 200 ppm sodium nitrite permitted as a preservative and color fixative in smoke cured sable fish, shad, or salmon (Code of Federal Regulations, 1981a,b Committee on Nittite and Alternative Curing Agents in Food, 1981). 

Acyl donor Nucleophile Product Maximum yield (%) Ref. 

Is the nominal radiation dose sufficient to destroy B. pumilus spore samples at a relatively high concentration (e.g., 108 spores per ml or per strip) using a maximum load of product (maximum density) ... 

Menstrual products Maximum Strength Midol Menstrual... 

A continuous decanter centrifuge may be acceptable for the operation. The separation of solids is controlled by the centrifugal force, the bowel radius, and the effective length. The specification depends on the desired products maximum clarification, classification, or solids dryness. 

A third type of operation is a trade off between the above two types of operation. Here an optimal reflux policy is chosen so that some objective function is satisfied minimum time, maximum product, maximum profit, etc.), subject to any constraints (product amount and purity) at the end of the process (Coward, 1967 Hansen and Jorgensen, 1986 Diwekar et al., 1987 Mujtaba, 1989 Farhat et al., 1990 Mujtaba and Macchietto, 1992a, 1992b Logsdon and Biegler, 1993 Mujtaba and Macchietto, 1993, 1996, 1997 Mujtaba, 1997, 1999 Sorensen and Skogestad, 1996). This type of operation is known as optimal operation. 

Harrison, W. G. (1990). Nitrogen utihzation in chlorophyU and primary productivity maximum layers An analysis based on the f-ratio. Mar. Ecol. Prog. Ser. 60 85—90. 

The operating parameters are chosen to achieve successful operation, such as maximum productivity, maximum yield, minimum desorbent consumption. There are two major methods to obtain these operating parameters one is the periodic moving port analysis... 

The influence of media components on the production of 2-methoxy-3-isopropyl and 2-methoxy-3-secbutyl pyrazines by Pseudomonas perolens (ATCC 10757) and selected mutants of this culture was studied. Pyrazine production was observed only during the stationary growth phase. The parent culture produced a maximum of 42 ng/mL pyrazines while selected mutants were found to produce a maximum of 15,760 ng/mL. The parent and mutant strains were found to exhibit similar responses to nutrient sources. Maximum pyrazine production was observed using pyruvate (1%), lactate (1%) or nutrient broth as carbon source. Nitrogen source had no influence on pyrazine production. Maximum pyrazine formation was observed when phosphate level ranged from 0.4 mM to 1.2 mM in the media. 

However, for economy of production, maximum yields of alkaloids, and ease of recovery of the products, certain culture media containing relatively simple nutrient sources are preferred. For example, the media which are useful in the production of the alkaloids include an assimilable source of carbon such as glucose, sucrose, starch, molasses, dex-trins, corn steep solids, corn syrup liquor, sorbitol, mannitol, lactose, and the like. A preferred source of carbon is mannitol. Additionally, the media employed contain a source of assimilable nitrogen such as oatmeal meat extracts, peptones, amino acids and their mixtures, proteins and their hydrolysates, com steep liquor, soybean meal, peanut meal and ammonium salts of organic acids such as the citrate, acetate, malate, oxalate, succinate, tartrate and like salts. 

The photochemical decomposition of these molecules yields N2 and other gaseous products. Maximum ablation rates of up to 80 pm/pulse could be achieved which is the highest rate reported for a synthetic polymer [118]. 

The nitridation of phosphate precursors (AIPO4 and Alo.5Gao.5PO4) has a positive effect on the selectivity to cross-condensation product. Maximum selectivities are obtained over samples with intermediate nitrogen contents. Selective poisoning of the acid and the basic sites, by adding tripropylamine and benzoic acid respectively in the reactor showed that both acid and basic sites are responsible for the catalytic activity of Al(Ga)PO(N) catalysts. 

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