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  • 1
    Online Resource
    Online Resource
    Piscataway :Rutgers University Press,
    Keywords: Planetariums - United States - History - 20th century. ; Electronic books.
    Description / Table of Contents: Every year, millions of Americans visit planetariums and are captivated by their strikingly realistic portrayal of the night sky. Today, it is indeed difficult to imagine astronomy education without these magnificent celestial theaters. But projection planetariums, first developed in Germany, have been a part of American museum pedagogy only since the early twentieth century and were not widespread until the 1960s. In this unique social history, former planetarium director and historian of science Jordan D. March#65533; II offers the first complete account of the community of individuals and institutions that, during the period between 1930 and 1970, made planetariums the popular teaching aids they are today. March#65533; addresses issues such as the role of gender and social developments within the planetarium community, institutional patronage, and the popularization of science. He reveals how, at different times, various groups, including financial donors, amateur scientists, and government officials, viewed the planetarium as an instrument through which they could shape public understanding and perceptions of astronomy and space science. Offering an insightful, wide-ranging look into the origins of an institution that has fascinated millions, Theaters of Time and Space brings new perspectives to how one educational community changed the cultural complexion of science, helped shape public attitudes toward the U.S. space program, and even contributed to policy decisions regarding allocations for future space research.
    Type of Medium: Online Resource
    Pages: 1 online resource (294 pages)
    Edition: 1st ed.
    ISBN: 9780813537665
    DDC: 523.074
    Language: English
    Note: Theaters of Time and Space -- Part I:Origins of the Projection Planetarium -- Chapter I: Zeiss Planetaria in Europe, 1923-1929 -- Part II: Zeiss Planetaria in America, 1930-1946 -- Chapter 2: Planetaria, Patrons, and Cultural Values -- Chapter 3: Personnel, Training, and Careers -- Chaper 4: Planetaria and Popular Audiences -- Part III: The Postwar Period, 1947-1957 -- Chaper 5: Armand N. Spitz and Pinhole-Style Planetaria -- Part IV: Planetaria in the Space Age, 1958-1970 -- Chapter 6:Sputnik and Federal Aid to Education -- Chapter 7: New Horizons in Planetarium Utilization -- Chapter 8: New Routes to Professionalization.
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  • 2
    Online Resource
    Online Resource
    New York, NY :Springer,
    Keywords: Nephrology. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (149 pages)
    Edition: 1st ed.
    ISBN: 9781489976932
    Series Statement: Oxidative Stress in Applied Basic Research and Clinical Practice Series
    Language: English
    Note: Intro -- Preface -- Contents -- Contributors -- About the Authors and Editors -- Chapter 1: Oxidative Stress in Cardiac Valve Development -- Introduction -- Heart Valve Structure and Function -- Heart Valve Function -- Heart Valve Structure -- Heart Valve Development and the Potential Role of Oxidative Stress -- Heart Valve Development -- Endocardial Cushion Formation -- Heart Valve Remodeling -- Signaling Pathways of Heart Valve Development -- Signaling Pathways required for Endocardial Cushion Formation -- Endothelial Nitric Oxide Synthase Signaling -- Tgfβ Signaling -- Wnt Signaling -- Vascular Endothelial Growth Factor (Vegf) Signaling -- Signaling Pathways Implicated in Heart Valve Remodeling -- VIC Activation -- Extracellular Matrix Remodeling -- Conclusions and Perspectives -- References -- Chapter 2: ROS in Atherosclerotic Renovascular Disease -- Introduction -- Mechanisms of ROS Generation in the Stenotic Kidney -- RAAS Activation -- Inflammation -- Comorbidities -- Elements of Ischemia-Reperfusion Injury -- Effects of ROS on the Stenotic Kidney -- Vascular Function (Renal Perfusion and Endothelial Function) -- Tubular Integrity -- Glomerular Function -- Renal Fibrosis -- Microvascular Architecture -- Effects of ROS on the Non-stenotic Kidney -- Vascular Function -- Tubular Function -- Glomerular Function -- Renal Fibrosis -- Microvascular Architecture -- Effects of ROS on Blood Pressure -- Interventions to Decrease ROS in ARVD -- Antioxidants -- RAAS Inhibitors -- Percutaneous Transluminal Renal Angioplasty (PTRA) -- Stem Cells -- Summary -- References -- Chapter 3: Oxidative Stress and Vascular Injury -- Introduction -- Hemodialysis Vascular Access Failure -- Chronic Kidney Disease -- Atherosclerosis -- Conclusion -- References -- Chapter 4: Role of Oxidative Stress in Hypertension -- Introduction. , Hypertension: Involvement of the Central Nervous System and Peripheral Mechanisms -- Role of Nox Isoforms in Regulating Blood Pressure and Vascular Dysfunction -- Baseline Blood Pressure -- Commonly Used Models of Experimental Hypertension -- Ang II-Dependent Hypertension -- Mediators of Nox Signalling in Ang II-Dependent Hypertension -- Mineralocorticoid-Dependent Hypertension -- SHR -- Role of Nox in the Brain During Hypertension -- Role of Antioxidant Enzymes in Regulating Blood Pressure and Vascular Function -- CuZnSOD -- MnSOD -- ECSOD -- Glutathione Peroxidases -- Recent Concepts: Immunity, Oxidative Stress and Hypertension -- Clinical Links Between Oxidative Stress and Hypertension -- Conclusion -- References -- Chapter 5: Oxidative Stress and Central Regulation of Blood Pressure -- Introduction -- Increased ROS in the RVLM in Stroke-Prone Spontaneously Hypertensive Rats -- Sources of ROS Production in the Brain -- High Salt Intake and ROS in the RVLM of Hypertensive Rats -- ROS in the RVLM of Obesity-Induced Hypertensive Rats -- Possibility of Currently Used Cardiovascular Drugs Acting on the Brain Thereby Reducing Central Sympathetic Outflow -- Conclusions -- References -- Chapter 6: Reactive Oxygen Species and the Regulation of Cerebral Vascular Tone -- Introduction -- Which ROS Are Important? -- What Are the Major Sources of ROS in the Cerebral Circulation? -- Direct Effects of ROS and Related Molecules on Vascular Tone -- Endothelial Function -- Neurovascular Coupling -- Chemoregulation -- Myogenic Responses and Autoregulation -- Loss of Mechanisms That Protect Against Oxidative Stress -- Conclusions -- References -- Chapter 7: Therapeutic Strategies Harnessing Oxidative Stress to Treat Stroke -- Introduction -- Allopurinol and Uric Acid -- Uric Acid -- Allopurinol -- Edaravone -- NXY-059 -- Antioxidant Nutrients -- Vitamin C -- Vitamin E. , Other Compounds -- Statins -- Tirilazad -- NA-1 -- The Future -- NADPH Oxidases -- Neurovascular Unit -- Physiological Parameters -- Conclusion -- References -- Index.
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 73 (1969), S. 4419-4421 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 30 (1958), S. 1991-1993 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 65 (1961), S. 1477-1484 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 68 (1997), S. 1484-1494 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The wavelet transform has emerged as an important tool for the analysis of intermittent and nonstationary signals. This article addresses implementation issues of a digital continuous wavelet transform that is sufficiently general that any continuous wavelet can be used. Working equations are derived for wavelet sampling, aliasing, and scale population by using the band-pass filter interpretation of wavelet functions. The implementation procedure is applied to the Morlet wavelet in detail as an example. Finally, the Morlet wavelet is applied to velocity fluctuations measured in a subsonic wake undergoing transition to turbulence. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 52 (1980), S. 784-784 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 883-892 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A corona discharge supersonic free-jet is shown to be a nearly pure source of A 3Σu+ metastable molecular nitrogen, an electronically excited and chemically active form of N2 that is ideally suited to nitride semiconductor growth. Optical emission spectroscopy at various distances downstream of the supersonic nozzle reveals a cascade through the excited state manifold of N2 triplet states to populate the A 3Σu+ state. Appearance potential spectroscopy (mass spectrometer electron bombardment ionization yield, measured as a function of electron impact energy) delivers the composition of the terminal molecular beam. A 3Σu+ molecules are the dominant activated species in the beam, which otherwise contains only nonreactive X 1Σg+ ground state nitrogen molecules plus a minor amount of 4S0 nitrogen atoms. Up to 1.56% number fraction of the beam is A 3Σu+, providing 1.0×1017 metastables sr−1 s−1. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 70 (1999), S. 1640-1648 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The fabrication of molecular beam "skimmers" from electrical discharge machining (EDM) graphite is reported. EDM graphite is highly refractory and is easily machined using conventional cutting and grinding techniques. In its most fine-grained form, EDM graphite can be machined free-standing to a knife-edge lip radius of ∼1 μm, providing excellent skimmer aerodynamics. Being refractory, such EDM skimmers are of particular interest in sampling or collimating high-temperature plasma discharges. Our explicit application is in skimming an electrical discharge supersonic free-jet of molecular nitrogen, forming a molecular beam of A 3Σu+ metastable N2 to be used in the heteroepitaxial growth of III–N wide-band-gap semiconductors. In view of the their economy, ease of manufacture, and excellent aerodynamics, the skimmers may also find use in skimming conventional, nondischarge supersonic free-jets. The performance of the EDM skimmers was tested in a conventional helium supersonic free-jet expansion, measuring the time-of-flight distribution and beam intensity as a function of nozzle pressure and nozzle-skimmer separation. Direct comparison with commercial nickel and copper skimmers showed the EDM graphite skimmers to perform nearly as well as the best commercial metal skimmers. The refractory properties of the skimmers were tested in a high-temperature arc-discharge supersonic free-jet expansion of 10% nitrogen in argon. Exposure to a plasma plume of ∼7500 K for over 6 h produced only relatively minor deterioration of the EDM graphite skimmer. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 77 (2000), S. 3030-3032 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High quality epitaxial III-N semiconductor films, ranging in thickness from 300 to 900 Å, have been grown using A3Σu+ metastable nitrogen molecules. The work employed a corona discharge supersonic free-jet to generate a molecular beam containing exclusively the A3Σu+ activation state in an otherwise ground state N2 beam. AlN films were grown on 6H–SiC(0001) and Si(001) substrates. GaN films were grown on the same substrates and on buffer layers of AlN deposited in situ on 6H–SiC(0001). The N-atom incorporation efficiency (the number of N atoms attaching to a III–N surface per incident A3Σu+ molecule) approached 100% and was independent of substrate temperature from 600 to 900 °C, implying direct molecular chemisorption of the A3Σu+. These measurements support theoretical predictions that A3Σu+ is an ideal precursor for III–N growth. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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