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  • 1
    Electronic Resource
    Electronic Resource
    Reproductive costs to male and female worm pipefish (2003)
    Oxford, UK : Blackwell Science Ltd
    Journal of fish biology 62 (2003), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Prior to reproductive maturity male and female worm pipefish Nerophis lumbriciformis are not significantly different in standard length (LS), eviscerated mass or condition indices. Subsequently, however, mature females achieve significantly (P 〈 0·001) greater values of LS and mass. For egg-bearing males, there was no marked difference in the mass of embryos with increasing development (P 〉 0·1); similarly there was no significant divergence in condition indices calculated for males carrying embryos of increasing development. Post-brooding males, however, had significantly lower values for the hepato-somatic index than either egg-bearing or non-mated male worm pipefish (P 〈 0·001). This study suggests that male worm pipefish invest a significant proportion of their energy budget into the development and maintenance of the brooding patch, to the detriment of increased length or mass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1095-8649.2003.00061.x
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  • 2
    Electronic Resource
    Electronic Resource
    Sexual Differences in Human Crowd Motion (1972)
    [s.l.] : Nature Publishing Group
    Nature 240 (1972), S. 353-355 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1 Numbers for 1965-1966 and 1970 Observations Students Pedestrians Children 1965-1966 Still mode __ _ . 185 Walk mode 693 628 377 Run mode - 9 217 1970 Walk mode, males 500 623 __ Walk mode, females 636 452 - Table 2 Summary of %2-squared Tests of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/240353a0
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  • 3
    Electronic Resource
    Electronic Resource
    Trimethylphosphine complexes of tungsten(O) and (IV). X-ray crystal structures of trimethylphosphine tris (phenylacetylene) tungsten(O); bis(trimethylphosphine) tetrakis (methylisocyanide) tungsten(O), and oxodichlorotris (trimethylphosphine) tungsten (IV)
    Amsterdam : Elsevier
    Polyhedron 2 (1983), S. 803-810 
    Details
    ISSN: 0277-5387
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0277-5387(00)87210-1
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  • 4
    Electronic Resource
    Electronic Resource
    Mass loading of planetary magnetospheres by rocky satellites-I: Production of rocky ejecta
    Amsterdam : Elsevier
    Advances in Space Research 4 (1984), S. 23-26 
    Details
    ISSN: 0273-1177
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0273-1177(84)90004-8
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  • 5
    Electronic Resource
    Electronic Resource
    The impact of dust grains on fast fly-by spacecraft: Momentum multiplication, measurements and theory
    Amsterdam : Elsevier
    Advances in Space Research 4 (1984), S. 297-301 
    Details
    ISSN: 0273-1177
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0273-1177(84)90046-2
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  • 6
    Electronic Resource
    Electronic Resource
    Akustische Messungen von Fasereigenschaften (1977)
    Springer
    Colloid & polymer science 255 (1977), S. 104-104 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01449749
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  • 7
    Electronic Resource
    Electronic Resource
    Nicotine and brain-stimulation reward: Interactions with morphine, amphetamine and pimozide
    Amsterdam : Elsevier
    Pharmacology, Biochemistry and Behavior 46 (1993), S. 453-457 
    Details
    ISSN: 0091-3057
    Keywords: Dopamine receptor antagonist ; Opiate ; Psychomotor stimulant ; Self-stimulation
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0091-3057(93)90378-7
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  • 8
    Electronic Resource
    Electronic Resource
    Finite element design of manipulator-coupled spacecraft for a research testbed (1995)
    Springer
    Journal of intelligent and robotic systems 13 (1995), S. 75-91 
    Details
    ISSN: 1573-0409
    Keywords: Harmonic drives ; Manipulator-Coupled Spacecraft ; Control Moment Gyro ; Finite Element Analysis ; Lagrangian Equations of Motion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This paper describes the design and analysis of a research testbed developed to study the control of manipulator-coupled spacecraft with independent attitude control systems. This scenario could present itself in the assembly of Space Station Freedom (SSF). SSF assembly calls for a rendezvous of the Space Shuttle (SS) with SSF. Part of the assembly process requires that both spacecraft be coupled via the Space Shuttle Remote Manipulator System. An additional criterion that poses increased complexity is that the Space Shuttle controls and Space Station controls can not communicate. The technical issue involved is unwanted vibrations of the coupled-configuration that occur retraction and the complications due to non-interacting control systems. To understand these vibrations and possible complications, a research testbed has been built at the Marshall Space Flight Center in Huntsville, AL. To build the testbed, the manipulator links joints, and vehicles that represent the Space Shuttle and Space Station had to be designed. Pre-design simulation studies using ANSYS [1] (a Finite Element Computer Code) is used to size and design the manipulator links for the experimental facility. The ANSYS results were verified by the development of the Lagrangian Equations of motion. The Harmonic drives used as joints for the two link, three joint manipulator have been dissected into free body diagrams to ensure proper load paths in the ANSYS models. Accurate simulation of manipulator-coupled spacecraft is an important technology for NASA to understand. This paper outlines the methodology behind the preliminary design of a research testbed developed to help NASA gain knowledge in this area.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01664756
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  • 9
    Electronic Resource
    Electronic Resource
    Angiotensin converting enzyme inhibition does not affect response to exogenous angiotensin II in the forearm of mild-moderate hypertensive patients (1994)
    Springer
    European journal of clinical pharmacology 47 (1994), S. 147-150 
    Details
    ISSN: 1432-1041
    Keywords: Angiotensin II ; Enalapril ; Hypertension ; receptor ; forearm blood flow
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract It has been proposed that the supression of endogenous levels of angiotensin II by angiotensin converting enzyme inhibition, may result in up-regulation of vascular AT1 receptors. This study evaluated the effects of orally administered enalapril on angiotensin II induced vasoconstriction in the human forearm of patients with mild-moderate hypertension. Patients received in random order, enalapril (20 mg) or matched placebo daily for 2 weeks. Forearm blood flow response to increasing doses of angiotensin II was measured using venous occlusion plethysmography at the begining of the study and at the end of each 2 week treatment period. Treatment with enalapril significantly reduced plasma angiotensin II levels and supine blood pressure compared to placebo. The percentage reductions in forearm blood flow in the infused arm, in response to the maximum dose of angiotensin II (50 pmol·min−1) were 53.2% at baseline, 51.4% on placebo and 59.5% on enalapril. The differences were not significantly different. This study demonstrates that supression of plasma angiotensin II does not enhance the response to exogenous intra-arterial angiotensin II in the human forearm of mild-moderately hypertensive patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00194964
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  • 10
    Electronic Resource
    Electronic Resource
    Effect of enalapril and quinapril on forearm vascular ACE in man (1997)
    Springer
    European journal of clinical pharmacology 51 (1997), S. 373-378 
    Details
    ISSN: 1432-1041
    Keywords: Key words Quinapril ; Enalapril angiotensin I ; Vascular ACE ; Plethysmography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract Objective: Different ACE inhibitors can be distinguished in vitro by their affinity for converting enzyme in vascular and other tissues. Quinapril appears to be amongst the more effective inhibitors of vascular tissue ACE in vitro. This study assesses the in vivo effect of single oral doses of quinapril and enalapril, in attenuating the vasoconstrictive action of angiotensin I (AI) (which we have previously shown depends on its conversion to angiotensin II (AII) by vascular ACE) in the forearm resistance vessels of man. Methods: The design was of randomized, open, placebo controlled, two way crossover type, Forearm blood flow (FABF) was measured simultaneously in both forearms by mercury in silastic strain gauge plethysmography. AI infusions were via a fine bore cannula in the left brachial artery with the right arm serving as a control. Results: Mean plasma ACE on placebo was 34.3 U · l−1. Both quinapril and enalapril produced a similar degree of plasma ACE inhibition reducing concentrations to 2.8 U · l−1 and 2.6 U · l−1 respectively. Quinapril caused a significantly greater inhibition of AI induced vasoconstriction with a 30.0% reduction compared with 67.0% and 85.0% for enalapril and placebo respectively. Enalapril attenuated AI induced vasoconstriction to a greater degree than placebo but the difference was not significantly different. Conclusion: These results indicate that when quinapril and enalapril are administered as single 20 mg doses, each of which produces the same degree of plasma ACE inhibition and blood pressure reduction- quinapril inhibits vascular ACE to a greater degree than both enalapril and placebo.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002280050216
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