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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 44 (1972), S. 100-104 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 45 (1973), S. 749-754 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 45 (1973), S. 1626-1632 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 6 (1970), S. 420-424 
    ISSN: 1432-0428
    Keywords: Plasma insulin ; glucose tolerance test ; postgastrectomy ; carbohydrate metabolism ; lag curves
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé La signification de la courbe pointue («lagcurve») c-à-d celle dans laquelle le sucre sanguin monte rapidement à partir de la valeur normale à jeun à plus de 180 mg/100 ml mais retourne à la valeur à jeun en 120 min, reste controversée. Pour étudier cela plus profondément, le taux de l'insuline plasmatique a été mesuré par dosage radio-immunologique, pendant des épreuves de tolérance au glucose orales et intraveineuses, chez trois groupes de sujets comparables en ce qui concerne l'âge et le poids. Groupe 1, 14 avec des courbes pointues inexpliquées [(lagstorage curves) caractéristique de l'absorption intestinale rapide]. Groupe 2, 14 avec des courbes pointues à la suite d'une intervention chirurgicale gastrique. Groupe 3, 14 sujets normaux. Le taux moyen d'insuline était plus élevé dans le groupe 1 que dans le groupe 3, mais le stimulus hyperglycémique était plus grand. La réponse insulinique dans le groupe 2 n'a pas différé des témoins d'une façon significative. La courbe moyenne du sucre sanguin était semblable dans les groupes 1 et 2, mais en dépit de ceci, la réponse insulinique était significativement prolongée dans le groupe 1 suggérant un degré de résistance ou d'antagonisme insulinique. Dans les épreuves intraveineuses, 2 malades de chacun des groupes 1 et 2 avaient une valeur K dans le domaine des valeurs diabétiques. La valeur moyenne de K était plus élevée dans le groupe 1 que dans le groupe 2. Les deux groupes montraient une réponse insulinique semblable mais plutôt basse.
    Abstract: Zusammenfassung Die Bedeutung von spitzgipfligen Blutzuckerkurven, die von normalen Nüchternspiegeln auf mehr als 180 mg% ansteigen, um in 120 min auf die Ausgangswerte zurückzukehren, bleibt strittig. — Um diese Frage weiter zu klären, wurden imnumologisch die Plasma-Insulinwerte bei 3 Gruppen von je 14 Probanden gemessen, die nach Alter und Gewicht übereinstimmten: Gruppe 1 bestand aus Probanden mit derartigen Kurven ohne ausreichende Erklärung, Gruppe 2 aus Patienten nach Magenoperationen und Gruppe 3 diente als Vergleichskollektiv. Im Teilkollektiv 1 fanden sich höhere Insulinwerte als in 3, doch bestand gleichzeitig eine stärkere Blutzuckererhöhung als Stimulans. Die Insulinausschüttung in der Gruppe 2 unterschied sich nicht signifikant vom Vergleichskollektiv. In den Gruppen 1 und 2 stimmen die Blutzuckerspiegel weitgehend überein, doch hielt die Erhöhung der Insulinkonzentration in Gruppe 1 signifikant länger an, was auf einen gewissen Grad von Insulin-Resistenz oder -Antagonismus schließen läßt. Bei der i.v. Belastung ergaben sich für je 2 Probanden der Gruppen 1 und 2k-Werte im diabetischen Bereich. In Gruppe 1 lagen die mittlerenk-Werte höher als in Gruppe 2. Beide Teilkollektive zeigten eine eher erniedrigte Insulin-Ausschüttung.
    Notes: Summary The significance of the lag curve, i.e. one in which the blood sugar rises rapidly from a normal fasting value to more than 180 mg/100 ml but returns to the fasting value within 120 min, remains controversial. In order to study this further, plasma insulin levels were measured by immunoassay during oral and intravenous glucose tolerance tests in 3 groups of age/weight matched subjects: Group 1, 14 with unexplained lag curves: Group 2, 14 with lag curves following gastric surgery and Group 3, 14 normal subjects. The mean insulin levels were higher in Group 1 than in Group 3 but the hyperglycaemic stimulus was greater. The insulin response in Group 2 did not differ significantly from the controls. The mean blood sugar curves were similar in Groups 1 and 2, but despite this the insulin response was significantly prolonged in Group 1, suggesting a degree of insulin resistance or antagonism. In the intravenous test 2 patients from each of Groups 1 and 2 had aK value in the diabetic range. The meanK value was higher in Group 1 than in Group 2. Both groups showed a similar rather low insulin response.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-0533
    Keywords: Key words Calcium ; SOD-1 ; Knockout mouse ; Motoneuron ; Parvalbumin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract SOD-1-deficient mice demonstrate no loss of motoneurons but are still vulnerable to axotomy and ischemic insults. To investigate possible reasons for vulnerability of motoneuron populations, we studied changes in ultrastructural calcium distribution during maturation in spinal- and oculomotor neurons in SOD-1–/– mice. Between 3 and 11 months the cytoplasmic component of the intracellular calcium changed at a lower rate in spinal motoneurons and motor axon terminals in the interosseus muscle of SOD-1–/– animals compared to wild-type controls. No such dissimilarities were noted in the oculomotor system, or in mitochondrial calcium contents of either cell type. These data suggest that the lack of SOD-1 may be associated with vulnerability to insult by depletion of non-mitochondrial calcium stores selectively in motoneurons lacking parvalbumin and/or calbindin D28K.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 113 (2000), S. 10215-10225 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The low-temperature cation-ordered superstructure of anhydrous sodium sodalite, a zeolite with composition Na6[AlSiO4]6, has been determined through the use of both density functional theory (DFT) and classical force-field lattice energy minimizations. The charge-balancing Na+ cations are assumed to occupy their characteristic locations within the cubic alumino–silicate framework near the centers of the 6-ring windows. Within the constraints of the volume-doubled pseudotetragonal supercell reported in a previous x-ray diffraction study [B. Campbell, S. R. Shannon, H. Metiu, and N. P. Blake (submitted)], all possible arrangements of cations and vacancies amongst the 6-ring window sites were considered. Force-field calculations employing the ab initio based potential energy function derived by Blake, Weakliem, and Metiu [J. Phys. Chem. B 102, 67 (1998)] and the empirical shell-model potential of Catlow et al. [J. Chem. Soc. Commun. 1984, 1271; Mol. Simul. 1, 207 (1988)], were used to perform full lattice-energy minimizations of each configuration, and to assess their relative stabilities both before and after minimization. The most stable configurations were then examined in more detail via ab initio density functional calculations in the generalized gradient approximation. The lowest-energy supercell ordering proved more stable than the lowest-energy parent cell ordering, and also yielded a pseudotetragonal distortion (space group Pnc2) and a calculated diffraction pattern that qualitatively match experimental results. The structural influences that contribute to the low energy of the correct vacancy ordering are described in detail. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 115 (2001), S. 225-235 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Rotationally resolved S1←S0 fluorescence excitation spectra of 2-chloronaphthalene (2ClN) are measured using a newly constructed ultraviolet (UV) laser/molecular beam spectrometer. More than 1000 well-resolved rotational lines are recorded at a resolution of ∼3 MHz for the two overlapping band origins of the 35Cl and 37Cl isotopomers (Δνorigin∼3 GHz) over a 3.5 cm−1 spectral region at a rotational temperature of 10 K. Both spectra are hybrid bands, having 18% a-/82% b-type character in accordance with 1La←1A1 excitations observed for other 2-substituted naphthalenes. Additionally, Cl nuclear quadrupole splittings are observed as broadened asymmetric line shapes with linewidths from 5 to 20 MHz. Least-squares fits of these line shapes coupled with high-precision Fourier-transform microwave measurements of the ground state have provided accurate S1 quadrupole coupling constants. Specified relative to the principal quadrupole tensor orientation of S0, the S0 and S1 values of eQqzz are −71.198(5) MHz and −67.8(30) MHz, and the asymmetry parameters, η=(eQqyy−eQqxx)/eQqzz, are 0.076 38(5) and 0.13(5), respectively. The experimental line shapes are fit to Voigt functions, yielding 4.9(3) MHz homogeneous (lifetime) and 3.0(2) MHz inhomogeneous (Doppler) contributions. All of the observed structure are well reproduced by more than 20 000 transitions predicted for the nuclear-quadrupole-split rotational spectra of the two hybrid-band origins. Furthermore, the homogeneous linewidths show no dependence on either the upper state energy or angular momentum quantum numbers. The absence of additional level structure at the resolution of 1 MHz or more, from heavy-atom-enhanced intersystem crossing mechanisms, is discussed within the framework of radiationless transition theory. The quadrupole tensor components are used in simple theoretical models to investigate the orbital character of the S1 state and its radiationless decay mechanisms. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing
    Psychophysiology 41 (2004), S. 0 
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Past reports suggest that reduced P300 amplitude is associated with risk for alcoholism. We examined whether visual P300 amplitude could identify familial risk for alcohol disorders in individuals not known to be at risk at the time P300 was recorded. These individuals were twins from pairs where neither twin had an alcohol disorder at age 17 but familial risk was established at age 20 when one twin developed an alcohol disorder whereas the other did not. Of special interest was the P300 of the unaffected twin recorded at age 17 when both twins were alcoholism free. We found reduced P300 in the unaffected twin compared to pairs where both members were continuously disorder free. Hence, P300 was reduced in alcohol disorder-free individuals whose twin siblings subsequently developed alcoholism, further supporting reduced P300 amplitude as an endophenotype indexing familial risk for alcoholism.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1468-2850
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: There has been substantial interest in mindfulness as an approach to reduce cognitive vulnerability to stress and emotional distress in recent years. However, thus far mindfulness has not been defined operationally. This paper describes the results of recent meetings held to establish a consensus on mindfulness and to develop conjointly a testable operational definition. We propose a two-component model of mindfulness and specify each component in terms of specific behaviors, experiential manifestations, and implicated psychological processes. We then address issues regarding temporal stability and situational specificity and speculate on the conceptual and operational distinctiveness of mindfulness. We conclude this paper by discussing implications for instrument development and briefly describing our own approach to measurement.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0025-1747
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: As businesses progress through their organizational lifecycle, many experience growing pains associated with increased volume, product line breadth, personnel, and the complexity associated with managing larger businesses. It is essential that the company have the ability to recognize these and develop methods of dealing with them if they expect to survive. While many authors address the area of how to grow in terms of marketing, product development and financing and, while they note that there are risks to rapid growth, little information is available on how to recognize trouble spots, analyze them and accommodate them. The product profile is a management tool that helps decision-makers to identify problems that have evolved through time and to identify impending opportunities on the horizon. Discusses the advantages of adapting product profiling to services to identify and accommodate growing pains and then provides an example of its successful use by a service company.
    Type of Medium: Electronic Resource
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