解剖学和形态学
麻醉学
听力与言语-语言病理学
行为科学
心脏和心血管系统
细胞和组织工程学
临床神经病学
危重症监护医学
牙科,口腔外科和医学
皮肤病学
急诊医学
内分泌学和新陈代谢
肠胃学和肝脏学
老人病学和老年医学
卫生保健科学和服务
血液学
免疫学
传染病
综合和补充性医学
医学伦理学
医学信息学
医学实验室技术
医学,全科和内科
医学,法律
医学,研究和试验
神经系统科学
护理
营养学和饮食学
产科医学和妇科医学
肿瘤学
眼科学
整形外科学
耳鼻喉科学
病理学
儿科学
周围血管疾病
药理学和药剂学
生理学
基本医疗保健
精神病学
公共、环境和职业卫生
放射学,核医学和医学成像
康复学
生殖生物学
呼吸系统
风湿病学
运动科学
外科学
毒理学
热带医学
泌尿学和肾脏学
病毒学
老年医学
健康政策和服务
心理学,临床
abstract::Survival and G2 dalay following exposure to either 60Cobalt-gamma-rays or 241Americium-alpha-particles were studied in eight mammalian cell lines of human and animal origin including human fibroblasts from normal individuals and from patients with Ataxia telangiectasia or Fanconi's anemia. For both endpoints the effec...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01325466
更新日期:1982-01-01 00:00:00
abstract::The oxyhemoglobin saturation (HbO2) of single red blood cells within tumor microvessels (diameter: 3-12 micrometers) of DS-Carcinosarcoma was studied using a cryophotometric micromethod. In untreated control tumors (mean tissue temperature approx. 35 degrees C) the measured values scattered over the whole saturation r...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01323754
更新日期:1982-01-01 00:00:00
abstract::To investigate whether residual radiation damage in hematopoietic tissue is measurable in situ by a change in cell turnover, the retention of the thymidine analogue 5-(125-I)iodo-2'-deoxyuridine (125-IUdR) following incorporation into DNA of cells in bone marrow and spleen of mice was measured 35 days after 0-500 rad ...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01325468
更新日期:1982-01-01 00:00:00
abstract::Non-linear mechanical response of viscoelastic strain responding media to high amplitude stress-strain is examined from a phenomenological point of view and found to lead to results compatible with empirical observations of high intensity ultrasound irradiation of brain, liver, and eye lens tissues. The proposed hyste...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01324230
更新日期:1981-01-01 00:00:00
abstract::The rare earth radionuclides 177 Lu and 153Sm were administered as single i.p. injections in NMRI mice. Lu was deposited principally (up to 60%) in the skeleton if the quantity of stable carrier was low. Increase of stable carrier enhanced deposition in the reticulo-endothelial system. Sm was preferentially deposited ...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01324368
更新日期:1980-01-01 00:00:00
abstract::Analyses of structural aberrations of chromosomes and of the body burden of lead-210 were carried out in a group of workers occupationally exposed to chemical pollutants and low doses of ionizing radiation during a technological process in which coal is used as fuel. A parallel study was performed in a control group o...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01326048
更新日期:1980-01-01 00:00:00
abstract::The lethal effects of high-voltage capacitor-discharges in suspensions of E. coli K12 with varying electrolytes have been examined. A reduction of more than 99.9% of living cells, dependent on the applied voltage could be proved. The bactericidal action is assumed to be due to direct effects of high electric fields. E...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01324271
更新日期:1980-01-01 00:00:00
abstract::The number and type of stem cells in spleen and bone marrow of mice were determined after exposure to a single dose of 150 R on day 6, to a single dose of 500 R on day 6 or day 9 or to a fractionated dose of 150 R + 350 R on day 6 and 9. The stem cells were assayed on the basis of colony forming units (CFU) in spleen ...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01324267
更新日期:1980-01-01 00:00:00
abstract::At five stages of gestation, mice were exposed dorsally to ultrasonic irradiation at 1 W/cm2 (spatial and temporal average), 2 MHz, and 34 and 37 degrees C (temperature at beginning of exposure). The results indicated that ultrasonic exposure up to at least 100 s is not hazardous to a pregnant mouse or its offspring i...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01323651
更新日期:1980-01-01 00:00:00
abstract::The macroscopic reaction of the mouse skin was used to derive RBE values for negative pi-Mesons. Hind limbs of mice were irradiated with pions or X-rays. The pions were produced by the 590 MeV accelerator of the Schweizerisches Institut für Nuklearforschung (SIN). Early reaction was assessed over a period of 6--30 day...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01358292
更新日期:1979-08-10 00:00:00
abstract::Ehrlich ascites tumour cells were irradiated with negative pions at different positions in the plateau and the peak of the depth absorbed dose curve. Dose-survival curves for immediate testing of the viability of the cells are given and are compared with other types of radiations in use for therapy. From the data obta...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01358286
更新日期:1979-08-10 00:00:00
abstract::The effect of negative pions (peak and plateau), photons (140 kV and 29 MeV), and 20 MeV electrons on the proliferative capacity of Ehrlich ascites carcinoma cells was investigated. Proliferative survival curves plotted for the modalities employed are presented. Under the experimental conditions used, the peak pions w...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01358287
更新日期:1979-08-10 00:00:00
abstract::A human total-body counter was designed and built with two 20 X 10 cm NaI (Tl) crystals suspended over an "isoresponse surface" upon which the subject reclines. This surface is curved from head to knee and from left to right, so that a gamma-ray emitting object is detected with equal efficiency when placed anywhere up...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01323223
更新日期:1979-04-30 00:00:00
abstract::The rate constants for the photodynamic inactivation of hen egg-white lysozyme at different temperatures were studied. Arrhenius plots of the methylene blue sensitized photo-inactivation of lysozyme gave an experimental activation energy of 7.5 kcal/mol. The rate constants for the photodynamic inactivation of lysozyme...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01326898
更新日期:1979-02-23 00:00:00
abstract::Human female lymphocytes were exposed to X-rays in vitro at 7 different doses between 40-280 R. In 830 metaphases chromosome analyses were carried out with either conventional staining or G-banding, respectively. 486 breakpoints are non-randomly distributed between chromosomes and chromosome arms. An excess of lesions...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01340573
更新日期:1979-01-01 00:00:00
abstract::Most of plutonium released by nuclear explosions is Pu-241 which decays to Am-241. We have studied the deposition of Pu-241 and Am-241 in lichens collected since 1958 in the central part of Sweden (62.3 degrees N, 12. 4 degrees E). Comparative studies with Pu-isotopes, Pu-239 + 240 and Pu-238 were also performed. In 1...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF02176794
更新日期:1978-10-12 00:00:00
abstract::Working from the general postulate that natural selection of plant form operates so as to maximize the survival potential of a species, this paper examines the hypothesis that the mechanical support of tree foliage must approach optimality in the use of wood, i.e., that tree stems and branches will have "optimal form"...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01323263
更新日期:1978-08-10 00:00:00
abstract::Preliminary results on the spectral dependence of the absorption of light in tissue are presented and discussed with respect to medical laser application. ...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01323942
更新日期:1977-10-12 00:00:00
abstract::The kinetics of fluoresceindiacetate (FDA)-hydrolysis in erythrocytes, CHO-cells and homogenized cells was investigated by means of fluorescence spectroscopy. At a 10(-6)m FDA concentration the enzymatic conversion in the homogenized cells can be described by first order reactions. When studying intact cells, total ki...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01331024
更新日期:1977-04-27 00:00:00
abstract::Estimates are presented on the carbon-14 generation rates in several reactor types and in peaceful nuclear explosions. If the carbon-14 generated in light water reactors is released, the population radiation dose rate it causes initially will be comparable to that resulting from the krypton-85 and tritium generated in...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01331176
更新日期:1976-12-23 00:00:00
abstract::Model experiments with two structurally different proteins (alcohol dehydrogenase and salmine) show that glycine, alanine, and tyrosine are by far more frequently involved in photochemically induced cross-link formations with DNA than is cysteine. The yields for cross-link formation of thymidine with salmine (cysteine...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01332171
更新日期:1976-07-30 00:00:00
abstract::Microcalorimetric experiments on growth and maintenance metabolism of Saccharomyces strains ranging from haploid to hexaploid are described. During growth, the mean dry weight, the mean volume and the maximum heat flux of the cells are nearly linear functions of ploidy. These parameters are correlated with the cell co...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01323624
更新日期:1976-03-30 00:00:00
abstract::It is shown that the properties of ATPase (EC 3.6.1.3) of Micrococcus luteus depend only to some extent on the state of the membrane to which it is attached. Its interaction with the membrane appears to be largely controlled by polar forces. It is shown, however, that the UV-sensitivity of the membrane-bound ATPase is...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01323619
更新日期:1976-03-30 00:00:00
abstract::The evolution of the proflavine triplet state population with the extent of aggregation is examines, by ESRmeasurements, as a function of organic solvents and mineral salts, well known for their ability to influence the aggregation process. The intensity of the triplet state population has also been investigated as a ...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01323421
更新日期:1975-12-04 00:00:00
abstract::Carrier-free 11C-labeled carbon monoxide was produced by proton irradiation of a nitrogen gas flow target via the 14N(p, alpha)11C process followed by on-line reduction of the predominantly formed 11C-carbon dioxide with a yield of 0.4 mCi/muAmin. After appropriate quality control about 2 mCi of carrier-free 11C-carbo...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01323415
更新日期:1975-12-04 00:00:00
abstract::Microcalorimetry, in combination with conventional methods for determining metabolic activity, opens the possibility to study the efficiency with which ATP, produced as a result of metabolic activity, is utilized by the cell for energy-requiring synthetic reactions. Using commercial baker's yeast as a test organism an...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01323416
更新日期:1975-12-04 00:00:00
abstract::The influence of neutron scattering in the wall of a spherical proportional counter on the energy deposition spectra and the absorbed dose is investigated. Event probabilities, and frequency and dose-averaged deposited energies are calculated with and without scattering contribution and compared. The change of absorbe...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01328977
更新日期:1975-06-18 00:00:00
abstract::It is shown by UV absorption and absolute fluorescence spectroscopy of solutions containing both DNA and quinacrine that the components experience mutual radio-protection due to scavenging of water radicals. From measurements at different ionic strengths it is inferred that quinacrine bound to DNA is more efficiently ...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF02339804
更新日期:1975-06-13 00:00:00
abstract::Among the various methods for studying the relative effects of transmutation and radiation of incorporated nuclides, simulation of beta radiation by external gamma exposure is of practical importance. Self-irradiation and mutual irradiation of the labeled cells cannot be neglected in any case. Furthermore, additional ...
journal_title:Radiation and environmental biophysics
pub_type: 杂志文章
doi:10.1007/BF01326755
更新日期:1975-01-01 00:00:00