FACTORS AFFECTING OXYGEN UPTAKE IN MODEL SYSTEMS USED FOR INVESTIGATING LIPID PEROXIDATION IN MEAT

1978 ◽  
Vol 43 (1) ◽  
pp. 6-9 ◽  
Author(s):  
KI SOON RHEE
Keyword(s):  
Lipid Peroxidation ◽  
Oxygen Uptake ◽  
Model Systems ◽  
Factors Affecting

Computational prediction of Au(i)–Pb(ii) bonding in coordination complexes and study of the factors affecting the formation of Au(i)–E(ii) (E = Ge, Sn, Pb) covalent bonds

2021 ◽  
Author(s):  
José M. López-de-Luzuriaga ◽  
Miguel Monge ◽  
M. Elena Olmos ◽  
María Rodríguez-Castillo ◽  
Alba Sorroche
Keyword(s):  
Computational Prediction ◽  
Coordination Complexes ◽  
Model Systems ◽  
Computational Studies ◽  
Covalent Bonds ◽  
Factors Affecting

Computational studies on Au(i)–E(ii) in [R3PAu–(ECl3)] (E = Ge, Sn, Pb) model systems indicate the covalent dative nature from the [ECl3]− metalloligands to Au(i) fragments and predict the existence of Au(i)–Pb(ii) bonds using electron widthdrawing PR3 ligands.

scholarly journals Factors affecting cholesterol monohydrate crystal nucleation time in model systems of supersaturated bile.

1985 ◽  
Vol 26 (9) ◽  
pp. 1102-1111 ◽  
Author(s):  
A Kibe ◽  
M A Dudley ◽  
Z Halpern ◽  
M P Lynn ◽  
A C Breuer ◽  
...  
Keyword(s):  
Model Systems ◽  
Crystal Nucleation ◽  
Nucleation Time ◽  
Factors Affecting ◽  
Cholesterol Monohydrate

scholarly journals Physiological factors affecting performance in elite distance runners

2016 ◽  
Vol 22 ◽  
pp. 7 ◽  
Author(s):  
Leif Inge Tjelta ◽  
Shaher A. I. Shalfawi
Keyword(s):  
Oxygen Uptake ◽  
Energy System ◽  
Running Economy ◽  
Distance Runners ◽  
Energy Contribution ◽  
Physiological Factors ◽  
Factors Affecting ◽  
Air Resistance ◽  
Factors Affecting Performance ◽  
Response To Exercise

Running distances from 3000 m to the marathon (42 195 m) are events dominated by energy contribution of the aerobic energy system. The physiological factors that underlie success in these running events are maximal oxygen uptake (VO2max), running economy (RE), the utilization of the maximum oxygen uptake (%VO2max) and velocity at the anaerobic threshold (vAT). VO2max for distance runners competing on an international level has been between 70 and 87 ml/kg/min in men, and between 60 and 78.7 ml/kg/min in women, respectively. Due to lack of air resistance, laboratory testing of RE and vAT are recommended to be conducted on treadmill with 1% slope. %VO2max are in most studies expressed as the average fractional utilization of VO2max at vAT. Much of the current understanding regarding the response to exercise is based on studies of untrained and moderately trained individuals. To use this knowledge to give training recommendations to elite runners is hardly valid. Researchers should therefore exercise caution when giving training recommendations to coaches and elite distance runners based on limited available research.

FACTORS AFFECTING THE ACTIVITY OF ALLOXAN IN VITRO

1955 ◽  
Vol 33 (5) ◽  
pp. 780-791 ◽  
Author(s):  
S. J. Klebanoff
Keyword(s):  
Oxygen Uptake ◽  
Succinic Dehydrogenase ◽  
Selective Toxicity ◽  
Factors Affecting ◽  
Stable Factor ◽  
Heat Stable ◽  
Number Of Factors ◽  
Liver Homogenates ◽  
Insight Into

The effect of alloxan on the oxygen uptake and the succinic dehydrogenase activity of rat liver homogenates has been studied in an attempt to gain some insight into the activity of alloxan within the cell. The increased oxygen uptake on the addition of alloxan to liver homogenates was found to be non-enzymatic in nature and to depend on some heat stable factor or factors in the preparation. The ability of reduced glutathione to substitute for the homogenate suggests that this substance may be concerned. It is thought that alloxan is reduced to dialuric acid by a number of factors in the homogenate, and that the increased oxygen uptake results from the spontaneous reoxidation of this latter substance. Experiments with dialuric acid tend to confirm this hypothesis. The inactivation of succinic dehydrogenase by alloxan is greatly influenced by the pH of the solution in which the alloxan is dissolved, as well as by the pH of the enzyme preparation, with acidity increasing and alkalinity decreasing the effect. The progressive nature of the inactivation with time is shown to depend upon the lowering of the pH which is brought about by the addition of alloxan to an unbuffered enzyme mixture. The experimental results are discussed in relation to the possible importance of pH in the selective toxicity of alloxan.

FACTORS AFFECTING THE FORMATION OF NITRATE FROM ADDED NITRITE IN MODEL SYSTEMS AND CURED MEAT PRODUCTS

1978 ◽  
Vol 43 (3) ◽  
pp. 673-676 ◽  
Author(s):  
S. H. LEE ◽  
R. G. CASSENS ◽  
W. C. WINDER ◽  
O. R. FENNEMA
Keyword(s):  
Meat Products ◽  
Model Systems ◽  
Factors Affecting ◽  
Cured Meat

Review lecture: Ectomycorrhizas as nutrient absorbing organs

1978 ◽  
Vol 203 (1150) ◽  
pp. 1-21 ◽  
Keyword(s):  
Oxygen Uptake ◽  
Nutrient Uptake ◽  
Metabolic Control ◽  
Nutrient Absorption ◽  
Factors Affecting ◽  
Phosphate Absorption ◽  
Linear Relations

Early work on ectomycorrhizas indicated that they were probably adapted to efficient nutrient absorption. The use of excised mycorrhizas has allowed study of their properties as absorbing organs. The factors affecting their rates of nutrient uptake are similar to those of other absorbing organs but their rates are often greater. On absorption the nutrient is primarily accumulated in the fungal layer but may be mobilized later by reactions under metabolic control. Phosphate is accumulated in particularly large quantities as polyphosphate, which probably explains the linear relations of phosphate absorption and oxygen uptake in certain conditions. Hyphal connections between the fungal sheath and the substrate are variable, and this poses problems about absorption of ions of low mobility, and about the function of surface phosphatases. The fungal sheath is dependent on the host for carbohydrate and the drain on it may be considerable.

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