10,478 research outputs found
Apparatus for extraction and separation of a preferentially photo-dissociated molecular isotope into positive and negative ions by means of an electric field
Molecules of one and the same isotope were preferentially photodissociated by a laser and an ultraviolet source, or by multiphoton absorption of laser radiation. The resultant ions were confined with a magnetic field, moved in opposite directions by an electric field, extracted from the photodissociation region by means of screening and accelerating grids, and collected in ducts
Far infrared absorption of CsBr and CsI crystals doped with OH- and OD-
In CsBr:OH- both librational transitions and the ânon Devonshireâ line have been found. CsBr:OD- displays the expected isotope shift of a librator. Narrow lines in CsBr and CsI, observed directly above the two phonon lattice absorption, are tentatively explained as due to OH- aggregates
Recommended from our members
Congressional Careers: Service Tenure and Patterns of Member Service, 1789-2015
[Excerpt] This report presents data on Member tenure and a historical analysis of tenure trends. During the 19th century, the average service of Representatives and Senators remained roughly constant, with little or no change over time; the average years of service was slightly higher for the first half of the century than during the second. During the late 19th and through the 20th century, the average years of service for Senators and Representatives steadily increased.
The report also examines two further issues related to Member tenure: the distribution of Member service that underlies the aggregate chamber averages and historical trends in the percentage of Members who have served in both chambers. Although the average service tenure of Members has increased, more than half of Representatives and nearly half of Senators in recent Congresses have served eight years or less. While only a small and declining proportion of Representatives have historically had previous Senate experience, throughout history a sizeable percentage of Senators have previously served in the House
Space station integrated wall design and penetration damage control. Task 3: Theoretical analysis of penetration mechanics
The efforts to provide a penetration code called PEN4 version 10 is documented for calculation of projectile and target states for the impact of 2024-T3 aluminum, R sub B 90 1018 steel projectiles and icy meteoroids onto 2024-T3 aluminum plates at impact velocities from 0 to 16 km/s. PEN4 determines whether a plate is perforated by calculating the state of fragmentation of projectile and first plate. Depth of penetration into the second to n sup th plate by fragments resulting from first plate perforation is determined by multiple cratering. The results from applications are given
Staff Pay Levels for Selected Positions in House Member Offices, 2009-2013
[Excerpt] This report provides pay data for 13 staff position titles that are typically deployed in the offices of Members of the House. The positions include the following: Caseworker; Chief of Staff; Counsel; District Director; Executive Assistant; Field Representative; Legislative Assistant; Legislative Correspondent; Legislative Director; Office Manager; Press Secretary; Scheduler; and Staff Assistant. House Member staff pay data for the years 2009-2013 were developed based on a random sampling of staff for each position in each year
Staff Pay Levels for Selected Positions in Senatorsâ Offices, FY2009-FY2013
[Excerpt] This report provides pay data for 16 staff position titles that are typically deployed in Senatorsâ offices. The positions include the following: Administrative Director; Casework Supervisor; Caseworker; Chief of Staff; Communications Director; Counsel; Executive Assistant; Field Representative; Legislative Assistant; Legislative Correspondent; Legislative Director; Press Secretary; Scheduler; âSpecials Director,â a combined category that includes the job titles Director of Projects, Director of Special Projects, Director of Federal Projects, Director of Grants, Projects Director, or Grants Director; Staff Assistant; and State Director. Senatorsâ staff pay data for the years FY2009-FY2013 were derived from a random sampling of Senatorsâ offices in which at least one staff member worked in a position in each year
Coherent eta photoproduction on the deuteron in the resonance region
Coherent eta photoproduction on the deuteron is studied in the
resonance region neglecting eta rescattering and two-body processes. For the
elementary reaction on the nucleon, we have considered the dominant
resonance and as background the nucleon pole terms as well as
and meson exchange. We have studied the influence of different
choices for the neutron resonance amplitude, different prescriptions for fixing
the invariant mass of the resonance amplitude and different methods for
deriving the elementary production amplitude for an arbitrary reference frame.Comment: 33 pages revtex including 13 postscript figure
Darling, F. Fraser, and Milton, John P. (Eds.). Future environments of North America. vx + 767 pages, illus., ref., index. Garden City, New York, The Natural History Press, 1966.
- âŠ