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  • 1
    Electronic Resource
    Electronic Resource
    Influence of haemodialysis and renal transplantation on trace element concentrations in children with chronic renal failure (1986)
    Springer
    European journal of pediatrics 145 (1986), S. 372-376 
    Details
    ISSN: 1432-1076
    Keywords: Trace elements ; Haemodialysis ; Renal transplantation ; Atomic absorption spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Whole blood levels of Cd and Pb (μg/g Hb), serum concentrations of Sr and Zn and their urinary excretion were measured in healthy, renal transplant and dialyzed children by atomic absorption spectroscopy. Furthermore, before and after dialysis the concentrations of these elements were determined in blood/serum as well as in the dialysis fluid. The predialytic concentrations of Cd, Pb and Sr in blood/serum were significantly increased compared to controls. Haemodialysis had only minor effects on whole blood Cd and Pb levels but serum Sr and Zn concentrations increased as a result of high metal levels in dialysis fluid. Children after renal transplantation showed no alterations in Pb, Sr and Zn concentrations compared to healthy children but whole blood Cd was increased. According to the renal function the Pb, Cd and Zn urinary excretion decreased in the following order: healthy, renal transplant and dialysis children. Sr urinary excretion was increased in haemodialysis and renal transplant patients. In conclusion, we found no Zn deficiency. Elevated blood levels of Cd and Pb and elevated Sr serum concentrations in paediatric patients undergoing dialysis and increased Cd whole blood levels in renal transplant children could be of clinical interest.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00439241
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  • 2
    Electronic Resource
    Electronic Resource
    Hair zinc of young children from rural and urban areas in North Rhine-Westphalia, Federal Republic of Germany (1988)
    Springer
    European journal of pediatrics 147 (1988), S. 179-183 
    Details
    ISSN: 1432-1076
    Keywords: Zinc ; Hair ; North Rhine-Westphalia ; Atomic absorption spectrophotometry ; Children
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Hair zinc levels were estimated by atomic absorption spectrophotometry in 474 children, aged 3–7 years, from 11 kindergartens in a highly industrialized and polluted area (Duisburg) and 8 kindergartens in a rural area of North Rhine-Westphalia. The mean hair zinc level amounted to 118 μg/g, increasing between the 4th and 7th year of life. At all ages the values from the urban toddlers were lower than from rural toddlers, and in both regions they were higher in winter than in summer. Children with frequent upper respiratory tract infections (〉6 infections/year) showed significantly lower zinc hair values, independent of their age. Low hair zinc values (below 70 μg/g) were frequently found, raising the question as to whether this is a normal, age-related phenomenon, or whether it indicates a suboptimal zinc status of young children from North Rhine-Westphalia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00442218
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  • 3
    Electronic Resource
    Electronic Resource
    Measurements of minority-carrier diffusion length in n-CulnS2 by electron-beam-induced current method (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 66 (1989), S. 5412-5415 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The diffusion length of minority carriers in n-CuInS2 samples is examined with electron-beam-induced current (EBIC) technique in vertical and planar configuration. Theories for the interpretation of the EBIC data from the experiments are reported. The holes as minority carriers show a diffusion length in the range of 1 μm, which is promising for high efficient solar energy conversion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.343688
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  • 4
    Electronic Resource
    Electronic Resource
    Serum aluminium levels of intensive care patients treated with two different antacids for prevention of stress ulceration (1989)
    Springer
    Intensive care medicine 15 (1989), S. 84-86 
    Details
    ISSN: 1432-1238
    Keywords: Aluminium absorption ; Hyperaluminaemia ; Antacids ; Renal failure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We studied the serum aluminium levels of 30 intensive care patients receiving six daily doses of magaldrate (Riopan®) or aluminium hydroxide (Trigastril®). In both groups we found a significant rise of the serum aluminium concentration (p〈0.01) following administration of the antacid solutions. Examination on day 9 and 15 the magaldrate group showed significantly (p〈0.05) lower aluminium levels than the aluminium hydroxide group. An increase up to the critical serum aluminium level of 100 ng/ml occurred in none of the patients that all had normal or slightly impaired renal function. Therefore routine measurements of serum aluminium levels in patients without renal impairment are not considered necessary following antacid therapy. However, we recommend the use of antacids with an aluminium absorption rate as low as possible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00295982
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  • 5
    Electronic Resource
    Electronic Resource
    Variables influencing cadmium concentrations in hair of pre-school children living in different areas of the Federal Republic of Germany (1988)
    Springer
    International archives of occupational and environmental health 60 (1988), S. 43-50 
    Details
    ISSN: 1432-1246
    Keywords: Cadmium ; Hair ; Pre-school children ; Variables
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The influence of several factors on cadmium (Cd) concentrations in the hair of 474 pre-school children was examined. The study was performed in an industrial (Duisburg) and rural area (Westfalen) of the (FRG). Season, sex, hair color, and place of residence were found to be the main factors influencing Cd levels in hair. Concentrations of Cd in samples obtained during summer were on the average nearly twice as high as those sampled during winter (geometric means: 116.1 vs. 63.7ng/g). Boys had more Cd in their hair than girls (111.5 vs.74.0 ng/g). Cd levels in hair decreased from red to blond, to brown, and black hair. Children living in Duisburg had more Cd in their hair than those from rural areas (103.9 vs.77.Ong/g). Cd content in hair was inversely related to age.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00409378
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  • 6
    Electronic Resource
    Electronic Resource
    Identification of an autonomously replicating sequence near a histone gene of Physarum polycephalum (1986)
    Springer
    Current genetics 10 (1986), S. 459-462 
    Details
    ISSN: 1432-0983
    Keywords: Ars sequence ; Histone gene ; Replication origin ; Physarum polycephalum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Fragments of DNA with function as autonomous replication sequences in yeast were cloned from Physarum polycephalum. The ars activity is located in a 1.2 kbp fragment extanding 1.5 kbp to 2.7 kbp upstream of the 5′ end of a histone H4 gene. Our recent finding that a replication origin is located at a distance less than 3 kbp of this histone gene suggests that the ars element identified coincides with a specialized replication origin and can be used to direct chromosome replication in Physarum polycephalum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00419874
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  • 7
    Electronic Resource
    Electronic Resource
    Bacterial interference by anaerobic species isolated from human feces (1987)
    Springer
    European journal of clinical microbiology & infectious diseases 6 (1987), S. 266-270 
    Details
    ISSN: 1435-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Eighty-four anaerobic fecal isolates obtained from five healthy volunteers were tested for their ability to inhibit in vitro growth of eight species of Enterobacteriaceae,four species of faculative gram-positive cocci, and Pseudomonas aeruginosa.Forty-nine of the 84 anaerobic isolates (58 %) inhibited the growth of at least one indicator bacterium. Isolates of Bacteroides and Bifidobacterium spp. were most consistently inhibitory. Anaerobic cocci and clostridia were infrequently inhibitory; eubacteria showed no inhibitory activity.Serratia marcescens was the indicator most often inhibited; 54 % of all anaerobic isolates tested, all of nine Bifidobacterium isolates and 33 of 43 Bacteroides isolates inhibited this organism. No anaerobes inhibited the growth of Escherichia coli, Klebsiella pneumoniae, Klebsiella oxytoca, Citrobacter freundii, Citrobacter diversus orStreptococcus faecalis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02017610
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  • 8
    Electronic Resource
    Electronic Resource
    Thermal expansion, sound velocities, specific heat and pressure derivative ofT c in YBa2Cu3O7 (1988)
    Springer
    The European physical journal 69 (1988), S. 459-463 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report measurements, between helium and room temperature, of the thermal expansion α(T), sound velocitiesv L (T) andv T (v) and specific heatC(T) of YBa2Cu3O7 samples, all cut from the same sintered pellet. A linear term in α(T) is resolved at low temperatures. It is compared with a corresponding term in the low temperature specific heat and, using the bulk modulus from our sound propagation measurements, a Grüneisen parameter of usual size (1.2±0.4) is derived-in conformity with the possible existence of non-superconducting carriers well belowT c . Longtime drift effects in the length of the sample between 30 K and 60 K point to the vicinity of a structural instability. The Debye temperature derived fromC(T) amounts to about 450 K atT=T c =91 K and forT→0 approaches 350 K, in agreement with the value deduced fromv L (T) andv T (T). The superconducting transition is indicated by anomalies with idealized discontinuities Δα and ΔC. A thermodynamic relation between Δα and ΔC yields the relative pressure derivative ofT c ,t p =T c −1 (∂T c /∂p) p→0=+(0.7±0.2)·10−7 kbar−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01312506
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  • 9
    Electronic Resource
    Electronic Resource
    Purification and Characterization of two Extracellular β-Glucosidases from Trichoderma viride ITCC 1433 (1986)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 6 (1986), S. 115-121 
    Details
    ISSN: 0138-4988
    Keywords: Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: T. viride ITCC 1433 synthesizes a two component system for the hydrolysis of cellobiose and cellooligodextrins. 80% of the total activity are solubilized during growth. The large protein (A), mol. weight 98 000 d, is glycosylated and slightly acidic (pH = 6.1). The smaller protein (B), mol. weight 70 000 d, is unglycosylated and neutral (pH = 7.2). Both proteins form a two-step system where β-glucosidase A is active at low substrate concentrations (KM = 2.3 × 10-4 M cellobiose) while β-glucosidase B covers the range of 10-fold higher cellobiose concentrations (KM = 1.8 × 10-3 M). The enzymes are fairly stable with a residual activity of 70% at 50°C after 24 h.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/abio.370060203
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