期刊：
The Journal of Chemical Physics,1952年20(9):1431 ISSN：0021-9606
作者机构：
School of Chemistry and Physics, The Pennsylvania State College, State College, Pennsylvania<&wdkj&>College of Engineering, The University of Florida, Gainesville, Florida<&wdkj&>
摘要：
The low velocity scattering of H+, H2+, and H3+ in both ethane and propane have been measured at ion velocities of less than 150 volts. Ion neutralization was detected and measured for all three io...
作者：
Louis H.ClerfM.D., LL.D., F.A.C.S., F.A.C.P.*;F. JohnsonPutneyM.D., F.A.C.S.**;John J.O’KeefeM.D.‡
期刊：
The Surgical clinics of North America,1952年32(6):1637-1643 ISSN：0039-6109
通讯作者：
CLERF, L.H.
作者机构：
Professor of Laryngology and Broncho-Esophagology, Jefferson Medical College;Head of Department of Laryngology and Broncho-Esophagology, Jefferson Hospital, Philadelphia.<&wdkj&>Assistant Professor of Laryngology and Broncho-Esophagology, Jefferson Medical College;Chief of Clinic, Laryngology and Broncho-Esophagology, Jefferson Hospital;Attending Otolaryngologist, Philadelphia General Hospital;Attending Bronchoesophagologist, Methodist, Rush, and St. Mary’s Hospitals, Philadelphia.<&wdkj&>Assistant Professor of Otology, Laryngology and Broncho-Esophagology, Jefferson Medical College
期刊：
The Surgical clinics of North America,1952年32(6):1645-1656 ISSN：0039-6109
作者机构：
Associate Professor of Surgery, Jefferson Medical College, Philadelphia.<&wdkj&>Assistant Professor of Laryngology and Broncho-Esophagology, Jefferson Medical College, Philadelphia.
期刊：
Journal of the American Ceramic Society,1952年35(3):72-75 ISSN：1551-2916
作者机构：
School of Mineral Industries, The Pennsylvania State College, State College, Pennsylvania
摘要：
Nickel applied to a sheet steel as a nickel flash endures in the surface through several de‐enamelings and re‐enamelings. The attendant improvement in the enameling behavior of the steel is similarly persistent. Heat‐treating experiments with and without nickel lead to the conclusion that, while the fired ensemble is cooling, nickel oxide at the interface is reduced by hydrogen issuing from the steel, forming water which enters the enamel and diminishing the hydrogen available for defect production. In this function, a cobalt layer is comparatively ineffective.
作者：
Michael A. Stavitsky;Samuel J. Borowsky;Samuel M. Blumenfield;Eisig Silbershlag;Ephraim Auerbach;...
期刊：
Jewish Education,1951年22:57-72
作者机构：
American Association for Jewish Education<&wdkj&>NCJE<&wdkj&>College of Jewish Studies, Chicago <&wdkj&> Board of Jewish Education, Chicago<&wdkj&>Hebrew Teachers College, Boston<&wdkj&>Yiddish Pen Club<&wdkj&>AAJE<&wdkj&>Central Conference of American Rabbis<&wdkj&>Society for the Advancement of Judaism, N. Y. C.<&wdkj&>Essayist and Literary Critic<&wdkj&>Hadoar<&wdkj&>American Jewish Congress;[Michael A. Stavitsky; Harry Starr] American Association for Jewish Education;[Samuel J. Borowsky] NCJE;[Samuel M. Blumenfield] College of Jewish Studies, Chicago ;[Samuel M. Blumenfield] Board of Jewish Education, Chicago
期刊：
The Journal of the Acoustical Society of America,1951年23(5):630 ISSN：0001-4966
作者机构：
The Pennsylvania State College, State College, Pennsylvania
摘要：
Sound waves of finite amplitude are subject to progressive distortion or change in form during propagation. Theoretical analysis of this phenomenon for a plane wave neglecting dissipative forces leads ultimately to a multiple valued solution for acoustic pressure, displacement, etc. This is inconsistent with fact. R. D. Fay, introducing viscosity into the analysis, arrived at a solution in which the progressive distortion is balanced by the dissipative effects of viscosity. This wave, called the “stable” form, is essentially sawtoothed, varying in sharpness depending upon its intensity. Experimental measurements in a free spherically‐diverging sound field verify the existence of the stable wave by showing the progressive distortion of an initially sinusoidal wave to a sawtoothed stable form. Comparison of the experimental results (for the diverging field) with the theoretical results (for a plane wave field) reveals good agreement as to the harmonic content of the stable form, except that a higher sound intensity is required in the diverging field. Both experimentally and theoretically, for sufficiently high intensities, the pressure amplitude of the nth harmonic relative to that of the fundamental approaches 1/n.
作者机构：
Institute for Atomic Research and Department of Physics, Iowa State College, Ames, Iowa<&wdkj&>
摘要：
With the addition of sodium atoms the ferroelectric insulator W O3 acquires metallic properties. We have grown single crystals of NaxWO3 using a method developed at the Linde Air Products Company. Chemical analyses for sodium concentration showed x=0.66. The electrical resistivity was found to have a value of (1.9±0.2)× 10−4 ohm-cm at 0°C and to decrease approximately linearly with decreasing temperature in the range 20°C to -160°C. The Hall coefficient was found to have a value of (-5.1±0.2)× 10−4 cm3/coulomb at 20°C and to decrease slightly with decreasing temperature. This value for the Hall coefficient indicates one electron carrier for each sodium atom added to the crystal. Using Pauli's theory of paramagnetism for free electrons in simple metals the calculated magnetic susceptibility is 0.53× 10−6. The value observed by Stubbin and Mellor for a sodium concentration corresponding to x=0.9 was 0.45× 10−6. Using the free electron theory of metals, the following properties have been calculated: electron mobility and mean free path, energy at the surface of the Fermi distribution, thermal conductivity, and electronic specific heat.
