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  • Springer  (33)
  • Institute of Physics  (5)
  • Molecular Diversity Preservation International
  • 1980-1984  (38)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    The effect of differing dietary calcium and phosphorus contents on mineral metabolism and bone histomorphometry in young vitamin D-replete baboons (1984)
    Springer
    Calcified tissue international 36 (1984), S. 668-676 
    Details
    ISSN: 1432-0827
    Keywords: Diet ; Osteomalacia ; Calcium deficiency ; Phosphorus deficiency
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary Young baboons were fed semisynthetic, vitamin D-containing diets differing in calcium and/or phosphorus content over a 16 month study period. Diets low in calcium alone or low in both calcium and phosphorus led to the development of radiologic rickets and histologic features of osteomalacia at both 8 and 16 months. The diet which was low in calcium but which had a normal phosphorus content was associated with histologic features of hyperparathyroidism at 16 months; such features did not develop in animals fed the low calcium, low phosphorus diet. Biochemically the low calcium, normal phosphorus diet was associated with a transient fall in serum calcium around 8 months, and a more persistent elevation in serum phosphorus and alkaline phosphatase values during the latter half of the study. These biochemical changes were not seen in the baboons on the low calcium, low phosphorus diet. These results confirm that histological changes can occur as a result of dietary calcium deprivation in vitamin D-replete animals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02405388
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  • 2
    Electronic Resource
    Electronic Resource
    Computing a longest common subsequence for a set of strings (1984)
    Springer
    BIT 24 (1984), S. 45-59 
    Details
    ISSN: 1572-9125
    Keywords: Analysis of Algorithms ; String Merging Problems ; LCS Problem
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract The known 2-string LCS problem is generalized to finding a Longest Common Subsequence (LCS) for a set of strings. A new, general approach that systematically enumerates common subsequences is proposed for the solution. Assuming a finite symbol set, it is shown that the presented scheme requires a preprocessing time that grows linearly with the total length of the input strings and a processing time that grows linearly with (K), the number of strings, and (∥ℙ∥) the number of matches among them. The only previous algorithm for the generalized LCS problem takesO(K·|S 1|·|S 2|·...|S k |) execution time, where |S i | denotes the length of the stringS i . Since typically ∥ℙ∥ is a very small percentage of |S 1|·|S 2|·...·|S k |, the proposed method may be considered to be much more efficient than the straightforward dynamic programming approach.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01934514
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  • 3
    Electronic Resource
    Electronic Resource
    ExperimentalJ/ψ hadronic production from 150 to 280 GeV/c (1983)
    Springer
    The European physical journal 20 (1983), S. 101-116 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A detailed study ofJ/ψ hadronic production has been performed in a high statistics experiment (more than 1.5 106 J/ψ observed in their dimuon decay mode). Data have been taken with incident π±,K ±,p ±, on hydrogen and platinum targets, at 150, 200 and 280 GeV/c. We find from the observed nuclear dependance of the cross sections, that about 18% of theJ/ψ are produced diffractively. Using known structure functions of the quarks in the nucleon and in the pion, we derive estimations for the gluon structure functions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01573213
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  • 4
    Electronic Resource
    Electronic Resource
    Nonlinear third sound in thin superfluid helium films (1983)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1311-1318 
    Details
    ISSN: 0392-6737
    Keywords: Boson degeneracy and superfluidity of helium-4
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si studiano la natura delle onde non lineari del terzo suono e la concomitante dispersione di un film sottile superfluido, soggetto all'interazione di Van der Waals dovuta al substrato.
    Abstract: Резюме Исследуется природа нелинейного третьего звука и сопутствуюзей нелинейной дисперсии в тонкой сверхтекучуй пленке жидкого гелия, испытывающей взаимодствие Ван дер Ваальожкой.
    Notes: Summary The nature of nonlinear third-sound waves and the concomitant nonlinear dispersion of a thin superfluid film, subject to the van der Waals interaction due to a substrate, are investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02460215
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  • 5
    Electronic Resource
    Electronic Resource
    Exacerbation of rickets and osteomalacia by maize: A study of bone histomorphometry and composition in young baboons (1984)
    Springer
    Calcified tissue international 36 (1984), S. 370-379 
    Details
    ISSN: 1432-0827
    Keywords: Maize ; Vitamin D deficiency ; Bone ; Rickets ; Osteomalacia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary Three groups of young baboons were fed for 16 months on one of three diets. The first group was given a well-tried semisynthetic formula, the second group the same diet save that vitamin D had been omitted, and the third group was given the vitamin D-free diet in which maize replaced the dextrin normally used. Although both groups fed the vitamin D-free diets developed rickets and osteomalacia, the group receiving maize did so far more rapidly and to a much greater degree of severity, as evidenced by clinical, radiological, biochemical, and histological signs. The mechanism by which maize acts remains unclear, but this report serves to emphasize the extremely detrimental effects that might be expected in populations who are deficient in vitamin D and who have predominantly cereal diets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02405348
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  • 6
    Electronic Resource
    Electronic Resource
    Prevalence of primary adult lactose malabsorption in three populations of northern China (1984)
    Springer
    Human genetics 〈Berlin〉 67 (1984), S. 103-106 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Lactose absorption capacity was examined in 641 apparently healthy adolescents and adults (447 males and 194 females with an average age of 22.9 years and an age range of 16–46 years) using a field version of the lactose tolerance test with breath hydrogen determination. In the total sample, 89 lactose absorbers and 552 lactose malabsorbers were identified. Lactose malabsorption was most frequent in a subgroup of Han (Chinese) from northeastern China (229 of 248 subjects, 92.3%). Among 198 Mongols from Inner Mongolia, there were 174 lactose malabsorbers (87.9%). The frequency of lactose malabsorption was lowest in a group of Kazakhs, traditional herders from the northwestern region of Xinjiang (149 of 195 subjects, 76.4%). Reported symptoms of lactose intolerance were significantly more frequent in lactose malabsorbers. The findings in northern Han are similar to the reported lactose malabsorption frequency in southern (mainly overseas) Chinese, and correspond with the absence of animal milk from traditional Chinese diets. The relatively low prevalence of lactose malabsorption among the Kazakhs suggests that lactose persistence may be frequent in herding pastoralist populations of southwest Asia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00270566
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  • 7
    Electronic Resource
    Electronic Resource
    A familial paracentric inversion: A short review of the current status (1984)
    Springer
    Human genetics 〈Berlin〉 67 (1984), S. 121-125 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary We present here a familial case of a paracentric inversion in man with a short review of the literature. A paracentric inversion of chromosome 10(q11q26) was found in the amniocytes drawn for advanced maternal age. The presence of the inversion was investigated in 35 family members in three generations. No recombinants were recognized. The significance of these data for appropriate genetic counselling and possible reproductive risks is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00272985
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  • 8
    Electronic Resource
    Electronic Resource
    Calculation of photoelectron spectra of group IV tetrachlorides and carbon tetrahalides by SCF-X α-SW method (1983)
    Springer
    Theoretical chemistry accounts 63 (1983), S. 223-233 
    Details
    ISSN: 1432-2234
    Keywords: Photoelectron spectra ; Group IV tetrachlorides ; Carbon tetrahalides SCF-X α-SW method ; Transition state ; Ionization energy ; Electronic structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Photoelectron spectra and one-electron eigenfunctions of group IV tetrachlorides, ACl4, where A = C, Si, Ge, Sn and carbon tetrahalides, CB4, where B = F, Cl, Br, I, have been calculated by SCF-X α-SW method. Excellent agreement is obtained with the observed photoelectron spectra. The radius reduction factors of atomic sphereF r were adjusted instead of changing individual atomic radii. The comparison of photoelectron spectra and one-electron eigenfunctions for molecules ACl4 for different central atoms A and halogen atoms B is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00569247
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  • 9
    Electronic Resource
    Electronic Resource
    Immunological comparison of the usual and atypical human serum cholinesterase phenotypes (1983)
    Springer
    Biochemical genetics 21 (1983), S. 93-108 
    Details
    ISSN: 1573-4927
    Keywords: cholinesterase ; atypical cholinesterase ; quantitive enzyme variation ; human esterase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Antiserum prepared against highly purified usual human serum cholinesterase (the most common phenotype) cross-reacted identically with the atypical serum cholinesterase. The level of circulating atypical enzyme protein, determined immunologically, was about 30% lower when the enzyme came from an atypical rather than a usual phenotype, and the level of enzyme activity measured enzymatically atV max with eithero-nitrophenylbutyrate or benzoylcholine as substrate showed approximately the same degree of reduction. The average specific activity (activity atV max per microgram of enzyme protein) in sera from 28 usual and 20 atypical individuals did not differ significantly. These findings suggest that the atypical enzyme not only has altered catalytic properties (K)mbut also might be synthesized more slowly, or clearedin vivo more rapidly, than the usual enzyme.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02395394
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  • 10
    Electronic Resource
    Electronic Resource
    Immunological comparison of the usual and atypical human serum cholinesterase phenotypes (1983)
    Springer
    Biochemical genetics 21 (1983), S. 93-108 
    Details
    ISSN: 1573-4927
    Keywords: cholinesterase ; atypical cholinesterase ; quantitive enzyme variation ; human esterase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Antiserum prepared against highly purified usual human serum cholinesterase (the most common phenotype) cross-reacted identically with the atypical serum cholinesterase. The level of circulating atypical enzyme protein, determined immunologically, was about 30% lower when the enzyme came from an atypical rather than a usual phenotype, and the level of enzyme activity measured enzymatically at V max with either o-nitrophenylbutyrate or benzoylcholine as substrate showed approximately the same degree of reduction. The average specific activity (activity at V max per microgram of enzyme protein) in sera from 28 usual and 20 atypical individuals did not differ significantly. These findings suggest that the atypical enzyme not only has altered catalytic properties (K)mbut also might be synthesized more slowly, or cleared in vivo more rapidly, than the usual enzyme.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00498901
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