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  • Chemistry  (8)
  • Heart rate  (2)
  • Abscisic acid (ABA)  (1)
  • Albumin  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The relationship between stomatal resistance and abscisic-acid levels in leaves of water-stressed bean plants (1977)
    Springer
    Planta 133 (1977), S. 145-148 
    Details
    ISSN: 1432-2048
    Keywords: Abscisic acid (ABA) ; Leaf water potential ; Phaseic acid ; Phaseolus ; Stomates ; Water stress
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Leaf water potentials of Phaseolus vulgaris L. plants exposed to a -3.0 bar root medium were reduced to between -7 and -9 bars within 25 min and remained constant for the next several hours. This treatment led to considerable variation between leaves in both abscisic-acid (ABA) content and Rs, although the two were well correlated after a 5-h treatment. There was an apparent 7-fold increase in leaf ABA levels necessary to initiate stomatal closure when plants were exposed to a -3.0 bar treatment, but when plants were exposed to a -5.0 bar stress Rs values increased prior to any detectable rise in ABA levels. To explain these seemingly contradictory results, we suggest that the rate of ABA synthesis in the leaf, rather than the total ABA content, determines the status of the stomatal aperture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00391912
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of hydration on some orthostatic and haematological responses to head-up tilt (1986)
    Springer
    European journal of applied physiology 55 (1986), S. 187-194 
    Details
    ISSN: 1439-6327
    Keywords: Blood volume ; protein ; Blood pressure ; Heart rate ; Head-up tilt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Experiments were undertaken to determine the effects of hydration status on a) orthostatic responses, and on b), relative changes in intravascular volume and protein content, during 70
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00715003
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  • 3
    Electronic Resource
    Electronic Resource
    Early fluid and protein shifts in men during water immersion (1987)
    Springer
    European journal of applied physiology 56 (1987), S. 673-678 
    Details
    ISSN: 1439-6327
    Keywords: Blood volume ; Plasma volume ; Specific gravity ; Capillary filtration ; Ultrafiltrate ; Albumin ; Globulins ; Haematocrit
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary High precision blood and plasma densitometry was used to measure transvascular fluid shifts during water immersion to the neck. Six men (28–49 years) undertook 30 min of standing immersion in water at 35.0±0.2
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00424809
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of posture on arterial baroreflex control of heart rate in humans (1986)
    Springer
    European journal of applied physiology 55 (1986), S. 367-373 
    Details
    ISSN: 1439-6327
    Keywords: Carotid baroreceptors ; Central blood volume ; Heart rate ; Blood pressure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Altered baroreflex function may contribute to the cardiovascular changes associated with weightlessness. Since central blood volume (CBV) increases during simulated weightlessness, we have examined the possibility that acute changes in CBV may modify baroreceptor function. We used graded head-up tilt (HUT) and head-down tilt (HDT) to induce changes in CBV, and neck suction to stimulte carotid baroreceptors, in 6 subjects. The increase in pulse interval induced by a negative pressure of 8.2 kPa (62 mm Hg) imposed for 10 s while supine was compared with the increase while tilted for 8 min at ± 15
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00422735
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  • 5
    Electronic Resource
    Electronic Resource
    High resolution electron microscopy of the high-Tc Superconductor Bi2+xSr2Ca1-xCu2O8+δ (1989)
    Weinheim : Wiley-Blackwell
    Advanced Materials 1 (1989), S. 196-199 
    Details
    ISSN: 0935-9648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19890010605
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  • 6
    Electronic Resource
    Electronic Resource
    Nonisothermal flow of a generalized power-law fluid in converging sections for rubber extrusion (1987)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 27 (1987), S. 1371-1379 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A method for predicting pressure drop and temperature distribution in convergent sections is proposed. The generalized power-law rheological equation of state is used. Only the shear component of the converging flow is considered in order to estimate its contribution to total flow in such sections. A finite-difference scheme was used to simulate the flow. The method was applied to an ethylenepropylene terpolymer compound using different angles of approach for which the pressure drop and the extrudate temperature had been measured experimentally. Comparison with theoretically predicted data showed excellent agreement for small angles, while for large angles the inclusion of extensional effects was found to be necessary. The contribution of viscous dissipation effects was found to be negligible for the converging sections tested.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760271804
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  • 7
    Electronic Resource
    Electronic Resource
    Electrospray tandem mass spectrometry in the diagnosis of organic acidemiasPaper presented in part at the British Mass Spectrometry Society Meeting, Canterbury, 1993. (1994)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 8 (1994), S. 129-133 
    Details
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A novel procedure based on electrospray tandem mass spectrometry (ESI-MS/MS) has been used in the diagnosis of organic acidemias. The method is based on the determination of acylcarnitine profiles from blood spots collected on Guthrie cards. The acylcarnitines are extracted with methanol, derivatized to their butyl esters and analyzed by ESI-MS/MS. Precursor-ion scanning of the common fragment at m/z 85 of the butyl esters yields highly diagnostic acylcarnitine profiles. Analysis time is one minute per sample and is fully automated. Examples are given of normal profiles, of profiles from two patients with fatty acid oxidation defects, and of a case of propionic acidemia. The technique is simple, rapid and specific, and shows potential for routine application in neonatal screening of organic acidemias.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/rcm.1290080124
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  • 8
    Electronic Resource
    Electronic Resource
    Analysis of the squalestatins by on-line packed capillary liquid chromatography combined with electrospray mass spectrometry (1993)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 7 (1993), S. 953-956 
    Details
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A mixture of four squalestatins was separated anil characterized by gradient packed capillary liquid chromatography combined with electrospray collision-induced dissociation mass spectrometry (ESI/CID/MS). Negative-ion ESI was found to afford spectra typified by strong pseudo-molecular ions but providing little structural information. Structural information was obtained using an ion-focusing RF-only octapole lens to provide conditions for CID. The new method showed improvements in sensitivity when compared to existing thermospray and dynamic liquid secondary-ion mass spectrometry methods.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/rcm.1290071018
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  • 9
    Electronic Resource
    Electronic Resource
    Capillary ion analysis of potassium concentrations in human vitreous humor (1998)
    Weinheim : Wiley-Blackwell
    Electrophoresis 19 (1998), S. 6-10 
    Details
    ISSN: 0173-0835
    Keywords: Capillary electrophoresis ; Vitreous humor ; Potassium ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Capillary ion analysis (CIA) is a form of capillary electrophoresis which uses the differential electrophoretic mobility of ions to perform a separation of an ionic mixture. Application of this technique for direct detection of potassium concentrations in human vitreous humor was the purpose of this investigation. CIA was performed using a Waters Quanta 4000 Capillary Electrophoresis System with a 745 Data Module using a 75 μm × 60 cm capillary and a run electrolyte of 67.7 mg hydroxyisobutyric acid (HIBA), 52.8 mg 18-crown-6 ether and 64 μL UV-CAT-1 reagent (4-ethylbenzylamine) in a volume of 100 mL water (18 Mohm) with a voltage of 20 kV using ultraviolet absorption detection at 214 nm. Migration times were: ammonium ion, 2.86 min; potassium, 3.24 min; calcium, 3.84 min; sodium, 3.98 min; barium (internal standard), 4.68 min; and lithium, 4.79 min. Correlation coefficients (r) between peak area ratios and concentration ranges of 2.5-144 mmole/L (100-1000 ppm) were from 0.9855 to 0.9999. Coefficients of variation (CV) ranged from 1.45 to 13.8% between days and from 1.38 to 9.43% within-day. Application of this methodology to twenty-five vitreous humor specimens from forensic cases was compared to analysis by ion-specific electrode for potassium concentration. Comparison of CIA to ion-specific electrode analysis of vitreous humor potassium concentrations revealed a correlation coefficient of 0.9642. CIA is applicable to forensic analysis of potassium concentration in forensic vitreous humor specimens. Quantitation of numerous cation concentrations is possible by direct CIA of vitreous humor.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elps.1150190104
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  • 10
    Electronic Resource
    Electronic Resource
    Kinetics of acrylamide/glutathione binding by fast atom bombardment and thermospray mass spectrometry (1989)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 24 (1989), S. 689-693 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The kinetics of the binding of the neurotoxin acrylamide to the cysteine residue of glutathione has been studied. At 37 °C and pH 7.3 the second order rate constant has been determined to be 0.72 ± 0.06 mol-1 dm3 min-1 by thermospray mass spectrometry. The critical energy at pH 11.5 measured over the temperature range 10-37°C by fast atom bombardment mass spectrometry was measured as 24.6 kJ mol-1.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210240828
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