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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of chemical & engineering data 33 (1988), S. 435-437 
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-0428
    Keywords: Keywords Type II diabetes mellitus, preterm infant, childhood, glucose, insulin, birth weight, growth.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Aims/hypothesis. To test the hypothesis that small size for gestation and poor postnatal growth in preterm infants is associated with higher fasting and post-load plasma glucose and insulin concentrations at 9–12 years of age.¶Methods. Prospective follow-up at 9–12 years of 385 preterm children with birth weight less than 1850 g, who had anthropometry recorded at birth, 18 months and 7 years. Fasting plasma glucose, insulin, proinsulin and 32,33 split proinsulin concentrations and glucose and insulin concentrations 30 min after a standard glucose load were measured.¶Results. Post-load glucose concentrations were negatively related to birth weight, independently of gestation or subsequent growth. Fasting split proinsulin and 30-min insulin concentrations were highest in children who showed the greatest increase in weight centile between birth and current follow-up, regardless of gestation. When weight during childhood was included, birthweight centile was, however, no longer statistically significant: concentrations of fasting, split, proinsulin and 30-min insulin were highest in those children who had shown the greatest increase in weight centile between 18 months of age and current follow-up, with no evidence of a greater effect in those who were smallest at 18 months.¶Conclusion/interpretation. Our findings suggest that fetal growth influences plasma glucose 30 min after a glucose load in preterm children at 9–12 years. In contrast, childhood weight gain is the most important factor influencing insulin concentrations and this effect is the same regardless of early size. [Diabetologia (2000) 43: 714–717]
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Immunogenetics 45 (1997), S. 343-344 
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-0630
    Keywords: 68 ; 73.40 ; 79.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The effect of the multiple image interactions on theI–V characteristics and the reliability of the mean barrier approximation in calculating the current in MOM and MVM tunneling junctions are critically examined. It is demonstrated that the continued use of the uncorrected form of Simmons' original multiple-image force interaction in the analysis of tunneling junctions can lead to serious errors in both the current and the dynamic resistance. An extensive numerical analysis of planar junctions including the image potential suggests that the basic mean barrier approximation formulated by Simmons is essentially a thick barrier approximation. It also is shown that the conventional mean barrier approximation is a relatively poor approximation for the tunneling barriers of interest, and that it is not possible to establish a reliable a priori estimate of its range of validity.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1084
    Keywords: Arteries ; Extremities ; Angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract From October 1992 to May 1993 we carried out a prospective study on 30 patients, mean age 70 years, suffering from lower limb ischaemia (mild,n = 12; moderate,n = 9; severe,n = 9). Four masked investigators compared the outcome of two techniques for the preoperative evaluation of distal vessels of the lower limbs. The reference technique was digital subtraction angiography (DSA) with selective iliac injection, fixed centring on one ankle, and use so vasodilators. The new method was DSA with the so-called bolus chasing technique: after an injection above the aortic bifurcation, an acquisition during a continuous longitudinal translation movement allows all the arteries of the lower limbs to be visualised down to the most distal point. Both techniques are well tolerated and we found no significant difference in the number of distal arteries seen with the two methods. To assess the permeability of the distal lower limb network, the bolus tracking technique is as informative as an iliac selective injection, without its constraints. Consequently, we will routinely use it as the technique of choice.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1084
    Keywords: Arteries ; Extremities ; Angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract From October 1992 to May 1993 we carried out a prospective study on 30 patients, mean age 70 years, suffering from lower limb ischaemia (mild, n = 12; moderate, n = 9; severe, n = 9). Four masked investigators compared the outcome of two techniques for the preoperative evaluation of distal vessels of the lower limbs. The reference technique was digital subtraction angiography (DSA) with selective iliac injection, fixed centring on one ankle, and use so vasodilators. The new method was DSA with the so-called bolus chasing technique: after an injection above the aortic bifurcation, an acquisition during a continuous longitudinal translation movement allows all the arteries of the lower limbs to be visualised down to the most distal point. Both techniques are well tolerated and we found no significant difference in the number of distal arteries seen with the two methods. To assess the permeability of the distal lower limb network, the bolus tracking technique is as informative as an iliac selective injection, without its constraints. Consequently, we will routinely use it as the technique of choice.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 151 (1992), S. 51-53 
    ISSN: 1432-1076
    Keywords: Preterm infants ; Zinc ; Folate ; Plasma ; Supplement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The former practice of giving 1 mg (2.27 μmoles) oral folic acid daily to premature infants receiving enteral feeds was assessed with respect to zinc status in Cambridge, United Kingdom. A group of 60 preterm infants, 80% of whom were receiving 1 mg oral folic acid daily, were studied for up to the first 16 weeks of life. Plasma folate and plasma zinc were measured for each subject. A significant inverse relationship was found between the maximum attained serum folate level and the minimum attained serum zinc level, (t=5.0, 58 df, P〈0.0001). This remained significant after corrections had been made for gestational age at birth, fetal growth retardation, birth weight, sex, diet, assisted ventilation and length of time to full enteral feeding. The hypothesis that very high folate intakes may adversely affect serum zinc levels and, by inference, zinc status in preterm infants could not be rejected. Caution is therefore advised when prescribing such very high folate doses daily for small preterm infants.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 151 (1992), S. 48-50 
    ISSN: 1432-1076
    Keywords: Folic acid supplement ; Preterm infant ; Plasma folate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract One hundred and four preterm infants were studied during the first few months of life in the Special Care Baby Unit of Addenbrooke's Hospital, Cambridge, United Kingdom. Previously, it had been the daily practice within the Unit to give a 1 mg oral supplement of folate (in the form of pteroylglutamic acid), once the infants had commenced full enteral feeding. At least one blood sample was obtained from 70 infants before oral folate supplementation was started. In these, the plasma folate levels fell progressively from a median value of 45 μg/l to a median of 12 μg/l, by the 2nd–3rd week of life. Once started on the oral supplement, 83 of the infants provided at least one blood sample. The plasma folate level of these infants rose immediately to a median value of 300 μg/l and a maximum of 1000 μg/l. Within individuals, these plasma folate levels decreased progressively following the introduction of the supplement, despite continuing daily supplementation. In a typical baby this decrease appeared to be explained by an increase in body-size, i.e. dilution of the folate into a larger pool. The implications of this level of supplementation are discussed, and in the light of our observations we suggest that daily supplementation in the range, 0.05–0.2 mg folate may be preferable for well preterm infants.
    Type of Medium: Electronic Resource
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