Effect Of Progressive Increase Research Articles

PSIX-41 Effect of progressive increase the hours of daily light exposure during winter months in Holstein bulls fed high-concentrate diets.

PSIX-41 Effect of progressive increase the hours of daily light exposure during winter months in Holstein bulls fed high-concentrate diets.

Effects of progressive increase in body weight on lung function in six groups of body mass index

Effects of progressive increase in body weight on lung function in six groups of body mass index

Animal model: metabolic and thermic responses to diet and environment (4 degrees C) in obesity during aging in the LA/Ntul//-cp rat.

The results of this study indicate that aging is associated with progressive declines in the normal dietary and metabolic responses to diet and environment in this animal model. The normal thermic and hormonal responses to diet and environment are thought to contribute to the fine regulation of energy balance by modulation of the efficiency of energy utilization or storage [25]. In the obese phenotype, the declines in the above variables may be further complicated by the presence of long-standing insulin resistance, and by perturbations in the normal metabolism and action of thyroid hormones, particularly T3. These may further contribute, individually or in combination with other factors, to an enhancement of energy storage and thereby contribute to maintaining the obese state. Moreover, the effects of progressive increases in obesity further exacerbate the decline in the economy of energy utilization and storage. Thus the impact of these physiologic changes of aging and obesity may impart significant alterations on the efficiency of energy metabolism, which in turn may contribute to some of the pathophysiologic changes associated with longevity, and could influence nutritional indices in affected individuals. As nations become progressively more industrialized, the incidence of overweight conditions--including obesity, NIDDM, and related metabolic disorders--has been shown to become increased and, along with those changes, the metabolic and pathophysiologic sequelae related to those disorders become more common [6-8]. A greater understanding of mechanisms of impaired energy metabolism and energy balance in aging may provide new insight into the nutritional factors that may contribute to obesity in aging, their modulation, and the emergence of a longer, healthier lifestyle.

Changes in the concentrations of Na+, K+ and Cl- in secretion from the skin during progressive increase in exercise intensity.

A simple method for sampling skin secretion in 1-min periods was developed for investigating the effects of progressive increases in exercise intensity on Na+, K+ and Cl- secretions from the skin of the forearm. Ten healthy male subjects performed exercise consisting of eight stepwise increases in intensity from 50 to 225 W, with a 25-W increase at each step. Exercise at each step was for 3 min followed by a 1-min recovery period. Samples of blood and skin secretion were taken during the recovery period. Significant positive correlations were found between the mean concentrations of Na+ and Cl- and between those of K+ and Cl- in the skin secretion. The concentrations of electrolytes in the skin secretion also showed significant correlations with the blood lactate concentrations. The inflection points for secretions of Na+, K+ and Cl- were 4.04, 3.61 and 3.83 mmol.l-1 of blood lactate; 64.42, 61.96 and 62.14% of maximal oxygen consumption (VO2max); and exercise intensities of 123.01, 117.65 and 125.07 W, respectively. No significant differences were observed between the value of 67.27% of VO2max or 134.00W at the onset of blood lactate accumulation (OBLA) and the inflection points. From these results we concluded that changes in electrolyte concentrations in skin secretion during incremental exercise according to this protocol were closely related with the change in the blood lactate concentration, and that the inflection points for electrolytes may have been near the exercise intensity at OBLA.

An X-ray photoelectron spectroscopic study of some bis(diamine)-copper (II) complexes

XPS data for a series of octahedral copper(II) diamine tetrafluoroborate and perchlorate complexes are interpreted in the following terms; (i) the inductive effect of diamine substituents; (ii) the degree of cation-anion interaction; (iii) the effect of progressive increase in diamine chelate ring size; and (iv) the Jahn-Teller effect in these complexes.

Multiple unit antennas, with skew

The number of antennas required to produce a satisfactory horizontal pattern around a relatively large support structure is reduced in a major degree by a new technique known as "skew". Calculated and measured patterns are discussed, comparing normal radially-directed units and those with 90-degree skew. The results with skew angles varying from 90 degrees down to zero are studied. The effects of progressive increase of structure size are shown. Variation with phasing is studied. A mathematical analysis is made for the purpose of disclosing the fundamental basis for pattern improvement by antennas mounted in a skewed relationship.