Zobrazeno 1 - 10
of 14
pro vyhledávání: '"J L, Lawson"'
Autor:
A. B. Pons, J. L. Lawson, Nielsen Sd, L. G. Veasy, Willem J. Kolff, Fukumasu H, Robert C. Blaylock
Publikováno v:
Clinical Cardiology. 2:348-353
The miniature components of an intra-aortic balloon pumping system (IABP) have been successfully developed in this laboratory and have been effectively tested both in vitro and in 32 in vivo experiments using small animals weighing 3.5--18 kg. It is
Autor:
J. L. Lawson, A. W. Tyler
Publikováno v:
Review of Scientific Instruments. 10:304-307
A precision current stabilizer is described which is suitable for controlling an electromagnet. The circuit is adaptable to a wide range of current values. Applications to a cyclotron and to a beta‐ray spectrometer are discussed. Currents have been
Autor:
J. L. Lawson
Publikováno v:
Physical Review. 56:131-136
Autor:
A. W. Tyler, J. L. Lawson
Publikováno v:
Review of Scientific Instruments. 11:6-18
A magnetic beta‐ray spectrometer of high resolution has been constructed. The theory of the resolution of this instrument has been investigated in detail and applied to the design of the slit system. The effects of scattering within the vacuum cham
Autor:
J. L. Lawson, J. M. Cork
Publikováno v:
Physical Review. 52:531-535
It is shown that radioactive isotopes of indium may be formed possessing ten distinct half-lives ranging from 13 seconds to 50 days. By producing the various isotopes with different methods of excitation and measuring the energies of the beta- and ga
Autor:
J. L. Lawson, Harold Lifschutz
Publikováno v:
Review of Scientific Instruments. 9:83-89
A vacuum tube scale‐of‐two is described using triodes. Accurate high speed tests of the resolution time showed this to be 6.5×10−6 seconds. New methods of interpolation are also presented.
Publikováno v:
Physical Review. 52:901-906
Strontium and yttrium have been bombarded with 6.3 Mev deuterons, with 14-20 Mev neutrons, and with slow neutrons, and induced radioactivity obtained in both elements. The activity in strontium is readily obtained by the action of deuterons or neutro
Autor:
J. M. Cork, J. L. Lawson
Publikováno v:
Physical Review. 56:291-294
The artificial activation of cadmium and indium now yields at least three radioactive isotopes of cadmium and eight radioactive isotopes of indium. The probable masses of several of these isotopes have been determined. In cadmium bombarded with deute
Publikováno v:
Clinical cardiology. 2(5)
The miniature components of an intra-aortic balloon pumping system (IABP) have been successfully developed in this laboratory and have been effectively tested both in vitro and in 32 in vivo experiments using small animals weighing 3.5--18 kg. It is
Publikováno v:
Medical instrumentation. 13(4)
The criteria for the design, selection of materials, and fabrication of a total artificial heart have evolved over several years. As these criteria have become more sophisticated and exact, they have optimized the performance of all components within