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  • 11
    Electronic Resource
    Electronic Resource
    Effect of insecticides on the availability of nutrients, nitrogen fixation, and phosphate solubility in the rhizosphere soil of rice (1994)
    Springer
    Biology and fertility of soils 18 (1994), S. 37-41 
    Details
    ISSN: 1432-0789
    Keywords: Available nutrients ; Insecticides ; Microortanisms ; Nitrogen fixation ; Phosphate solubilization ; Rhizosphere soil ; Rice yield
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A field experiment was conducted to investigate the effects of 1,2,3,4,5,6-hexachlorocyclohexane (BHC), phorate, carbofuran, and fenvalerate, at their recommended doses, on some chemical and microbiological properties of the rhizosphere soil in relation to rice yields. In general, the insecticides had a beneficial effect on rhizosphere soil properties. Carbofuran strongly stimulated the mineralization of organic C. BHC and phorate led to the retention of less total N in the soil. BHC released more NH inf4 sup+ -N than the other insecticides. Phorate, however, liberated the most NO inf3 sup- -N. Phorate and fenvalerate released more available P than BHC and carbofuran did. All the insecticides stimulated the proliferation of aerobic non-symbiotic N2-fixing and phosphate-solubilizing microorganisms, resulting in an overall increase in rice yield. BHC had the greatest effect on rice yields, followed by phorate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00336442
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  • 12
    Electronic Resource
    Electronic Resource
    Absence of cytochrome c oxidase activity in a boy with dysfunction of renal tubules, brain and muscle (1994)
    Springer
    European journal of pediatrics 153 (1994), S. 267-270 
    Details
    ISSN: 1432-1076
    Keywords: Cytochrome c-oxidase ; Mitochondriopathy ; Proximal tubular acidosis ; Leigh disease ; Muscular disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report on a boy who developed proximal renal tubular acidosis with loss of carnitine at the age of about 6 months. A few months later he began to suffer from progressive muscular weakness and neurological disturbances. Blood biochemistry showed elevated lactate and β-hydroxybutyrate with increased lactate/pyruvate and β-hydroxybutyrate/acetoacetate ratios. A high urinary excretion of lactate and citric acid cycle intermediates was found. These results indicated a defect of the mitochondrial respiratory chain. Analysis of biopsy material from skeletal muscle revealed low activities of all respiratory chain complexes. In muscle and fibroblasts cytochrome c-oxidase (complex IV) was absent. Despite high dose multi-vitamin therapy the boy died at the age of 30 months from central respiratory failure. At autopsy the neuropathological diagnosis of Leigh disease was made.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01954517
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  • 13
    Electronic Resource
    Electronic Resource
    Secondary respiratory chain defect in a boy with long-chain 3-hydroxyacyl-CoA dehydrogenase deficiency: possible diagnostic pitfalls (2000)
    Springer
    European journal of pediatrics 159 (2000), S. 243-246 
    Details
    ISSN: 1432-1076
    Keywords: Key words Mitochondria ; Fatty acid oxidation ; LCHAD-deficiency ; Mitochondriopathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report on a boy who suffered from microcephaly, growth retardation, cardiomyopathy and hepatic dysfunction. When he had his first febrile infection at the age of 3 months he showed metabolic decompensation. Laboratory parameters and clinical features were compatible with a β-oxidation defect or a respiratory chain disorder. Measurement of β-oxidation enzymes showed long-chain 3-hydroxyacyl CoA dehydrogenase (LCHAD) deficiency; determination of respiratory chain complex activities revealed complete absence of complex I, II, III and IV activities in skeletal muscle and reduced activities of complexes II and IV in cultured fibroblasts, with secondary dysregulation of ATP synthase. The patient was found to be homozygous for the MTP:G1528 C mutation (LCHAD-deficiency). Conclusion This patient had LCHAD deficiency as his primary metabolic disorder, leading to secondary inhibition of respiratory chain enzymes by ‘toxic’ metabolites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004310050063
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  • 14
    Electronic Resource
    Electronic Resource
    Absence of cytochrome c oxidase activity in a boy with dysfunction of renal tubules, brain and muscle (1994)
    Springer
    European journal of pediatrics 153 (1994), S. 267-270 
    Details
    ISSN: 1432-1076
    Keywords: Key words: Cytochrome c-oxidase – Mitochondriopathy – Proximal tubular acidosis – Leigh disease – Muscular disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. We report on a boy who developed proximal renal tubular acidosis with loss of carnitine at the age of about 6 months. A few months later he began to suffer from progressive muscular weakness and neurological disturbances. Blood biochemistry showed elevated lactate and β-hydroxybutyrate with increased lactate/pyruvate and β-hydroxybutyrate/acetoacetate ratios. A high urinary excretion of lactate and citric acid cycle intermediates was found. These results indicated a defect of the mitochondrial respiratory chain. Analysis of biopsy material from skeletal muscle revealed low activities of all respiratory chain complexes. In muscle and fibroblasts cytochrome c-oxidase (complex IV) was absent. Despite high dose multivitamin therapy the boy died at the age of 30 months from central respiratory failure. At autopsy the neuropathological diagnosis of Leigh disease was made.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01954517
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  • 15
    Electronic Resource
    Electronic Resource
    Metastable and Equilibrium Decomposition of the Eutectoid β-Phase in the Cu-In System (1998)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 294-296 (Nov. 1998), p. 485-488 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/03/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.294-296.485.pdf
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  • 16
    Electronic Resource
    Electronic Resource
    Two-dimensional supersymmetric harmonic oscillator carrying a representation of the GL(2|1) graded Lie algebra (1996)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 37 (1996), S. 61-71 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: We study a supersymmetric two-dimensional harmonic oscillator which carries a representation of the general graded Lie algebra GL(2|1), formulate it on the superspace, and discuss its physical spectrum. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.531687
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  • 17
    Electronic Resource
    Electronic Resource
    An ongoing big bang model in the special relativistic Maxwell–Dirac equations (1996)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 37 (1996), S. 2253-2259 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: An exact, analytical solution of the combined Maxwell–Dirac equation is presented. The solution is regular inside a wedgelike domain of the flat space–time. On the boundary of that domain, the solution exhibits singular behavior. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.531507
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  • 18
    Electronic Resource
    Electronic Resource
    A 118 nm vacuum ultraviolet laser/time-of-flight mass spectroscopic study of methanol and ethanol clusters in the vapor phase (2002)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 116 (2002), S. 6990-6999 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Clusters of methanol and ethanol formed above neat liquid samples were entrained in a supersonic jet of helium and probed in the expansion using 118 nm vacuum ultraviolet laser single-photon ionization/time-of-flight (TOF) mass spectrometry. Almost every cluster ion observed in the TOF mass spectra could be represented by the formula H(ROH)n+, where R=CH3 or C2H5, and n=1–5. Formation of these species is attributed to a well-established ionization pathway where each protonated (n−1)-mer originates from its n-mer neutral parent. Signals in the TOF mass spectra due to the protonated trimers H(CH3OH)3+ and H(CH3CH2OH)3+ were found to be the most intense and provides direct evidence that these particular cluster ions are "magic-number" structures. The possible relationships between the observed ion data and the neutral cluster vapor phase distributions are discussed. In this context, methanol and ethanol vapor cluster distributions at 298.15 K and at several pressures≥the equilibrium vapor pressure were computed using the grand canonical Monte Carlo and molecular dynamics techniques. Lastly, differences between these experiments and the results of bimolecular reaction studies are discussed. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1466467
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  • 19
    Electronic Resource
    Electronic Resource
    Electron transport across fractal-like nanocrystalline clusters in N+ ion-beam induced poly(phenylene oxide) (2001)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 114 (2001), S. 8573-8582 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Nanocrystalline carbonaceous cluster evolution and electron transport in the N+ beam induced spin coated poly(2,6-dimethyl-1,4-phenylene oxide) thin films as a function of ion fluence has been investigated. Following Robertson's model and electron diffraction, the narrow optical band gaps were explained in terms of polyaromatic, single crystalline graphitelike clusters. With a threshold fluence of 1×1015 ions/cm2 for cluster growth, the size of the clusters ranged from 2 to 50 nm with the number of aromatic rings varying between 20 and 170 over the entire fluence range upto 8×1016 ions/cm2. A molecular reconstruction/self organization has been envisaged as a possible clue to the above structure evolution upon a critical energy density transferred to the 53 nm implanted layer. Transmission electron microscopy study of fractal scaling in the nanoparticle aggregates revealed a fractal dimension of 1.37±0.02 with the growth process to follow a diffusion limited aggregation model. Electrical conductivity data are explained in terms of a phase transition from an insulating state to a trap controlled hopping conduction of charge carriers between localized states on the backbone cluster with a backbone fractal exponent ∼3. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1364704
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  • 20
    Electronic Resource
    Electronic Resource
    Neutrophils in Asthma (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 629 (1991), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1991.tb37962.x
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