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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Phytochemistry 28 (1989), S. 247-249 
    ISSN: 0031-9422
    Keywords: Asteraceae ; Bidens pilosa ; chalcones ; okanin 3',4'-diglucoside ; okanin 3'-glucoside ; okanin 4'-(6''-O-acetylglucoside). ; okanin 4'-diglucoside ; okanin 4'-glucoside
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Phytochemistry 27 (1988), S. 3700-3701 
    ISSN: 0031-9422
    Keywords: Asteraceae ; Bidens pilosa ; chalcones ; okanin 4-methyl ether 3'-glucoside.
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of applied physiology 47 (1981), S. 271-279 
    ISSN: 1439-6327
    Keywords: Local rhythmical muscle work ; Rest intervals ; iEMG ; Duration of the R-R interval ; Endurance time ; Recovery time
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In a model work place (hand-grip dynamometer), eleven subjects performed rhythmical hand-grip contractions to exhaustion (frequency 30/min). In each working cycle the contraction and rest phases were distinguished. The work to exhaustion was repeated four times (four working periods with 15-min rest intervals). The tests were performed at 40, 60, 80, 100% MVC. Analysis of Variance showed no difference in the group means (mean values of each working period and load level) for the duration of the contraction or rest phases, the integrated bioelectrical muscle activity (iEMG) of flexors, extensors, brachioradialis (iEMG referred to working cycle and contraction phase) or iEMG of the thenar muscles (referred to the working cycle), or in the duration of the R-R interval in the ECG during comparable periods of the experiments. The endurance times decreased from working period 1–4, and a similar decrease occurred in the force-time product. It may be concluded from these results that 15 min rest is insufficient for adequate recovery from hand-exhaustion exercise.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European journal of applied physiology 51 (1983), S. 145-154 
    ISSN: 1439-6327
    Keywords: Local dynamic muscle work ; Working frequency ; Age ; Sex ; iEMG ; R-R interval
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thirty untrained subjects (group 1: 10 ♀, 20–30 years; group 2: 10 ♀, 36–46 years; group 3: 10 ♂, 20–30 years) performed dynamic hand work on a hand-grip dynamometer at loads varying from 20 to 100% MVC and three different working frequencies (20, 40, and 60 cpm). The mechanical muscle activity, the iEMG and the R-R interval were measured throughout the exercise. Before and after each exercise, the maximal hand-grip force (MVC) was determined together with the iEMG and the R-R interval. With the loads increasing gradually, the mean values of the duration of the contraction phase and of the iEMG of the four muscles increased in all test groups, but the duration of the rest phase and R-R interval decreased. Through an Analysis of Variance, evidence of systematic differences between the test groups was significant for the R-R interval only, while the effects of the loads (with exception of the rest phase) and of the working frequency proved significant for all parameters. The MVC, the iEMG and the R-R interval measured before and after the exercise did not show significant differences. This indicates that the exercise was not fatiguing.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 329 (1987), S. 937-944 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Azomethines from Furancarboxaldehydes and α-Amino-N-heterocycles
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0935-6304
    Keywords: Liquid chromatography, HPLC ; Reversed phase mode ; Metal oxinates ; Quantitative determination of Mn(II) besides Mn(III), in natural waters and fertile soils ; Pre-column and on-column derivatization ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 34 (1983), S. 583-592 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Investigations on the corrosion and corrosion protection of seawater cooled condensor tubes of copper-base alloys - Experiments with rotating samplesExperiments have been done on rotating disc and cylinder electrodes of CuZn20Al2, CuNi10Fe and CuNi30Fe in 3 w/o sodium chloride solution and in artificial sea water at 25 and 40 ° C.Erosion corrosion of sea water cooled tube condensors should be simulated and studied.The corrosion mechanism of copper base alloys in clean and polluted sea water was intensely studied with particular consideration to the influence of ammonia, sulfides and chlorine. The effectiveness of iron sulfate dosing was tested.With the rotating samples under test no erosion corrosion could be detected on free corroding specimens.
    Notes: An rotierenden Scheiben und Zylinderproben aus CuZn20Al2, CuNi10Fe und CuNi30Fe wurden Korrosionsversuche in 3%iger Natriumchloridlösung und in synthetischem Meerwasser bei 25 und 40 ° C durchgeführt. Dabei sollten auch die Vorgänge bei der Erosionskorrosion von meerwassergekühlten Rohrkondensatoren simuliert und untersucht werden. Es wurden umfangreiche Messungen zum Korrosionsmechanismus der Kupferbasislegierungen in sauberem und verunreinigtem Meerwasser durchgeführt, wobei der Einfluss von Ammoniak, Sulfiden und Chlor sowie die Wirksamkeit der Eisensulfatdosierung untersucht wurden. An den verwendeten rotierenden Proben konnte bei freier Korrosion keine Erosion erzeugt werden.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 69 (1997), S. 1223-1224 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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