1,562 research outputs found
Influence of the nucleon spectral function in photon and electron induced reactions on nuclei
We study the influence of the nucleon spectral function on eta photo- and
electroproduction on nuclei. Besides kinematical effects due to groundstate
correlations, also a modification of the S11(1535) decay width is taken into
account, which is caused by the possible decay into nucleons with mass smaller
than the pole mass in the medium. Hence, resonances with masses below the free
N eta threshold can contribute to eta production.Comment: 13 pages, 8 figure
Factors affecting the operation of laser-triggered gas switch (LTGS) with multi-electrode spark gap
Multi-electrode spark switches can be used for switching applications at elevated voltages or for command triggering. Symmetrical field graded electrodes allow the electrical stress across individual gaps to be controlled, thus maximising the hold off voltage and reducing switch pre-fire. The paper considers some aspects of multielectrode switch design and their influence on switching behavior. Non-symmetrical, uni-directional electrode topologies can be employed with advantages over traditional symmetrical design. The choice of working gas and gas pressure can influence switching performance in terms of delay-time and jitter. Transient analysis of switch characteristics has been undertaken in order to understand multi-electrode switching
The procurement and evaluation of a prototype laser satellite-tracking system Final report, 1 Jan. 1967 - 30 Sep. 1968
Pulsed ruby laser satellite tracking syste
A Response to Evolving Practice in Assessment and Intervention for Mildly Handicapped Adolescents
This research was published by the KU Center for Research on Learning, formerly known as the University of Kansas Institute for Research in Learning Disabilities.This paper examines the developmental history of programs for mildly mentally retarded and learning disabled adolescents. Curriculum/instructional alternatives are discussed and a rationale presented for consideration of a student's educational history when making instructional decisions. This rationale is predicated on the perspective that many mildly handicapped students have not been subjected to intensive instruction during their school years despite having received special educational services. Characteristics of intensive instruction and options for the implementation of such instruction is presented
Nuclear matter hole spectral function in the Bethe-Brueckner-Goldstone approach
The hole spectral function is calculated in nuclear matter to assess the
relevance of nucleon-nucleon short range correlations. The calculation is
carried out within the Brueckner scheme of many-body theory by using several
nucleon-nucleon realistic interactions. Results are compared with other
approaches based on variational methods and transport theory. Discrepancies
appear in the high energy region, which is sensitive to short range
correlations, and are due to the different many-body treatment more than to the
specific N-N interaction used. Another conclusion is that the momentum
dependence of the G-matrix should be taken into account in any self consistent
approach.Comment: 7 pages, 5 figure
Total Synthesis of Tulearin C
With the help of the smaller brother: Although alkyne metathesis will always be the little brother of alkene metathesis, it allows problems to be solved that are currently beyond reach of the more famous sibling. This notion is exemplified by the tulearin macrolides, which could only be selectively forged by ring-closing alkyne metathesis (RCAM)/transâ
reduction using the latest generation of alkyne metathesis catalysts
AnĂĄlise da composição fĂsico-quĂmica de salames coloniais e bacons comercializados no municĂpio de ConcĂłrdia, Santa Catarina.
Projeto/Plano de Ação: 01.06.06.001
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