No abstract available

No abstract available

[en] In the services of Radio Physics and Radiation Hospital has implemented an electronic patient data management, both of the treatment plan and the medical history of radiotherapy, so that we can exploit the advantages it brings to automate the analysis.

[en] Monthly dosimetric readings from professionally exposed workers in medical centres offer values lower than 1 mSv. These values appear in a small range and with an apparently random distribution for each type of activity. As a part of the quality assurance programme of the Radiological Protection Unit of our Hospital, it seems appropriate to verify the reliability of the readings of TLD-100 dosimeter for low integrated doses. The procedure described in this work allows the evaluation of the reliability of the obtained results for those doses. It also shows the possible influence in the results of different dose rates in different irradiation conditions as well as the possible difference in the readings when the time intervals between irradiation and reading moments are different. (Author)

[en] We here describe a new method and its comparison with the traditional imaging system portal Portal Vision.

[en] For the management of professionally exposed personnel dosimetry, da La are required for the use and return of dosimeters. in the Department of Radio Physics and Radiation Protection have designed and implemented a database management staff dosimetry Hospital and Area Health Centers. The specific objectives were easily import data from the National Center dosimetric dosimetry, consulting records in a simple dosimetry, dosimeters allow rotary handle, and also get reports from different periods of time to know the return data for users, services, etc.

[en] The possible applications of solar furnaces to materials surface treatment are explained in an illustrative manner. A brief description of these systems is exposed, as well as an overview of the feasible industrial or testing applications for which their validity has been proven. (Author) 5 refs

[en] This report describes work performed during FY 95 for the Knowledge Fusion Project, which by the Department of Energy, Office of Nonproliferation and National Security. The project team selected satellite sensor data as the one main example to which its analysis algorithms would be applied. The specific sensor-fusion problem has many generic features that make it a worthwhile problem to attempt to solve in a general way. The generic problem is to recognize events of interest from multiple time series in a possibly noisy background. By implementing a suite of time series modeling and forecasting methods and using well-chosen alarm criteria, we reduce the number of false alarms. We then further reduce the number of false alarms by analyzing all suspicious sections of data, as judged by the alarm criteria, with pattern recognition methods. This report describes the implementation and application of this two-step process for separating events from unusual background. As a fortunate by-product of this activity, it is possible to gain a better understanding of the natural background

[en] Dose-response curves of the cellular immune response of C58/ wm mice to syngeneic line I/sub b/ malignant lymphoid cells (I/sub b/ cells) were computer analyzed by the PROBT subroutine in the IBM Scientific Subroutine Package. An analysis of the relative immunogenicity of various admixtures of x-irradiated (XI/sub b/) and viable I/sub b/ cells (VI/sub b/) after i.p. injection showed that the ratio had to be approximately 100 : 1 to be immunogenic. Viable I/sub b/ cells contained in immunogenic mixtures multiplied in vivo at a logarithmic rate up to 5 or 6 days but were eliminated immunologically by 8 or 9 days. Adoptive cell transfer techniques were used to quantify the protective effect of immune spleen cells (ISC). Essentially a constant dose of ISC (10⁶.⁴) protected mice against a challenge dose of 10² to 10⁵ VI/sub b/ cells; more than 10⁵ VI/sub b/ cells were lethal. Two techniques were used to quantify immunity even though mice ultimately died of transplanted leukemia, viz., mean survival time (MST) with a fixed challenge dose of VI/sub b/ cells, or MST with a fixed time for death. The sensitivity and statistical limitations of these assays are presented. To amplify the sensitivity of assays for adoptive cellular immunity a technique of antigenic stimulation was used, viz., 1 day after x-irradiated mice (600 R) received an i.p. injection of normal or immune spleen, bone marrow or thymic cells they received an i.p. injection of XI/sub b/ cells containing an admixture of VI/sub b/ cells. The technique amplified the sensitivity of ISC transfer tests approximately 100-fold and made it possible to detect protective effects of bone marrow and thymic cell populations. (U.S.)

No abstract available