Dominating redox systems in lakes and rivers; thermodynamic interpretation of in-situ measurements with a platinum electrode.

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

authors： Toth B,Dose K

更新日期：1976-07-30 00:00:00

abstract：:The majority of the public in industrial countries believes that pollution and low doses of radiation are threats to good health. As a matter of fact, when these putative risks are compared to those originating from lifestyle, they appear very small. In particular, the risks associated with low doses of irradiation, e...

journal_title：Radiation and environmental biophysics

authors： Tubiana M

更新日期：2000-03-01 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

authors： King D,Loucks OL

更新日期：1978-08-10 00:00:00

abstract：:Various transport models are presently used to predict the long-term migration behaviour of fallout radiocesium on the soil. To examine to what extent the uncertainty of these predictions is influenced by the spatial variability of the migration rates, we determined the depth profiles of Chernobyl-derived 137Cs at 100...

journal_title：Radiation and environmental biophysics

authors： Bunzl K,Schimmack W,Zelles L,Albers BP

更新日期：2000-09-01 00:00:00

abstract：:Results of measurements of the resuspended radioactive aerosols in the Chernobyl area are presented which were obtained soon after the Chernobyl reactor accident and in a European project in 1992-1993. The measurements were carried out with the intention of obtaining a data base for dose assessment of resuspended radi...

journal_title：Radiation and environmental biophysics

authors： Garger EK,Kashpur V,Belov G,Demchuk V,Tschiersch J,Wagenpfeil F,Paretzke HG,Besnus F,Holländer W,Martinez-Serrano J,Vintersved I

更新日期：1997-09-01 00:00:00

abstract：:Osteosarcoma is the most frequent secondary malignancy following radiotherapy of patients with bilateral retinoblastoma. This suggests that the Rb1 tumour suppressor gene might confer genetic susceptibility towards radiation-induced osteosarcoma. To define the contribution of the Rb1 pathway in the multistep process o...

journal_title：Radiation and environmental biophysics

authors： Gonzalez-Vasconcellos I,Domke T,Kuosaite V,Esposito I,Sanli-Bonazzi B,Nathrath M,Atkinson MJ,Rosemann M

更新日期：2011-03-01 00:00:00

abstract：:Computational models of human anatomy are mathematical representations of human anatomy designed to be used in dosimetry calculations. They have been used in dosimetry calculations for radiography, radiotherapy, nuclear medicine, radiation protection and to investigate the effects of low frequency electromagnetic fiel...

journal_title：Radiation and environmental biophysics

authors： Caon M

更新日期：2004-02-01 00:00:00

abstract：:Heavy charged particle therapy, started at research institutes three decades ago, is now on the verge of entering a clinical phase. This phase has resulted from the evolution and development of various beam delivery systems and techniques with existing research accelerators and with newly built accelerators. For the f...

journal_title：Radiation and environmental biophysics

authors： Blattmann H

更新日期：1992-01-01 00:00:00

abstract：:In this work, direct DNA damage induced by low-energy electrons (<5 keV) is simulated using Monte Carlo methods, and the resulting yield of various strand breaks and base damages in cellular environment is presented. The simulation is based on a new inelastic cross section for the production of electron track structur...

journal_title：Radiation and environmental biophysics

authors： Zhang L,Tan Z

更新日期：2010-03-01 00:00:00

abstract：:The relationship between occupational exposure to extremely low-frequency electromagnetic fields and adult leukaemia has been studied extensively during the last decade. The first studies were based on crude exposure assessments, estimated through job titles, with no or only limited control confounding factors. The re...

journal_title：Radiation and environmental biophysics

authors： Feychting M

更新日期：1996-11-01 00:00:00

abstract：:This study was undertaken to investigate the mechanism of chemical radiosensitization by halogenated bases incorporated into DNA. Radiation-induced base and sugar-phosphate backbone damage to 5-bromouridine-5'-monophosphate (5-BrUMP) was monitored using a flow system connected in series with a recording spectrophotome...

journal_title：Radiation and environmental biophysics

authors： Greenstock CL,Whitehouse RP

更新日期：1992-01-01 00:00:00

abstract：:To evaluate the dose distributions of an electron microbeam and to help optimization of its design, the condensed-history (CH) Monte Carlo simulation algorithm implemented in the Geant4 toolkit was selected as an alternative to the conventionally used analog algorithm. Compared to the analog algorithm, the CH algorith...

journal_title：Radiation and environmental biophysics

authors： Ma Y,Zhou H,Zhuo Y

更新日期：2006-03-01 00:00:00

abstract：:Simple, ellipsoidal geometries have long been the standard for estimating radiation dose rates in non-human biota (NHB). With the introduction of a regulatory protection standard that emphasizes protection of NHB as its own end point, there has been interest in improved models for the calculation of dose rates in NHB....

journal_title：Radiation and environmental biophysics

authors： Ruedig E,Caffrey E,Hess C,Higley K

更新日期：2014-08-01 00:00:00

abstract：:The root apex cells of Pisum sativum were irradiated in an U-240 isochronous cyclotron at the Institute for Nuclear Research of the Ukrainian National Academy of Sciences, Kyiv. Several types of micronuclei, differing in structural peculiarities, were observed in the 84 h following exposure to beams of accelerated 1H,...

journal_title：Radiation and environmental biophysics

authors： Vasilenko A,Sidorenko PG

更新日期：1995-06-01 00:00:00

abstract：:The biophysical characteristics of heavy ions make them a rational source of radiation for use in radiotherapy of malignant tumours. Prior to radiotherapy treatment, a therapeutic regimen must be precisely defined, and during this stage information on individual patient radiosensitivity would be of very great medical ...

journal_title：Radiation and environmental biophysics

authors： Jianshe Y,Xigang J,Wenjian L,Zhuanzi W,Guangming Z,Jufang W,Bingrong D,Qingxiang G,Linda W

更新日期：2006-11-01 00:00:00

abstract：:To explore the expression level and the role of peroxisome proliferator-activated receptor gamma (PPAR-γ) in radiation-induced heart injury in a rat model, thirty-two Sprague-Dawley rats were divided into three groups (the control group, the 15-Gy irradiation group and the 18-Gy irradiation group). Experimental animal...

journal_title：Radiation and environmental biophysics

authors： Gao S,Wu R,Zeng Y

更新日期：2012-03-01 00:00:00

abstract：:An LBO (Li2B4O7) walled ionization chamber was designed to monitor the epithermal neutron fluence in boron neutron capture therapy clinical irradiation. The thermal and epithermal neutron sensitivities of the device were evaluated using accelerator neutrons from the 9Be(d, n) reaction at a deuteron energy of 4 MeV (4 ...

journal_title：Radiation and environmental biophysics

authors： Endo S,Sato H,Shimazaki T,Nakajima E,Kotani K,Suda M,Hamano T,Kajimoto T,Tanaka K,Hoshi M

更新日期：2017-08-01 00:00:00

abstract：:An extensive programme of experiments on transfer of radionuclides to aquatic species was conducted in the former USSR starting from the early 1950s. Only a few of these studies were made available in the English language literature or taken into account in international reviews of radionuclide behaviour in marine eco...

journal_title：Radiation and environmental biophysics

authors： Fesenko S,Fesenko E,Titov I,Karpenko E,Sanzharova N,Fonseca AG,Brown J

更新日期：2010-11-01 00:00:00

abstract：:With a model system of pBR322 plasmid DNA solution in vitro, the dose effects of radiation-induced single- and double-strand breaks (SSB and DSB) were measured and DSB was distinguished into alpha- and beta-types. Under the condition of low scavenging capacity existing in the irradiated DNA solution, SSB and alpha DSB...

journal_title：Radiation and environmental biophysics

authors： Shao C,Yu Z,Saito M

更新日期：2000-06-01 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

authors： Lion Y,Saucin M,Van de Vorst A

更新日期：1975-12-04 00:00:00

abstract：:In mice, persisting radiation-induced growth retardation of hematopoietic tissue suggested that at least part of the surviving stem cells are genetically injured. Additional mitotic stress some time after the radiation insult might remove injured stem cells, thus improving the overall recovery of the irradiated bone m...

journal_title：Radiation and environmental biophysics

authors： von Wangenheim KH,Peterson HP,Cronkite EP,Feinendegen LE

更新日期：1987-01-01 00:00:00

abstract：:In order to provide fundamental data required for dose evaluation due to environmental exposures, effective dose conversion coefficients, that is, the effective dose rate per unit activity per unit area, were calculated for a number of potentially important radionuclides, assuming an exponential distribution in ground...

journal_title：Radiation and environmental biophysics

authors： Saito K,Ishigure N,Petoussi-Henss N,Schlattl H

更新日期：2012-11-01 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

authors： Hülsheger H,Niemann EG

更新日期：1980-01-01 00:00:00

abstract：:Beginning in 1950, people living on the banks of the Techa River received chronic low-dose-rate internal and external radiation exposures as a result of releases from the Mayak nuclear weapons plutonium production facility in the Southern Urals region of the Russian Federation. The Techa River cohort includes about 30...

journal_title：Radiation and environmental biophysics

authors： Krestinina L,Preston DL,Davis FG,Epifanova S,Ostroumova E,Ron E,Akleyev A

更新日期：2010-05-01 00:00:00

abstract：:In the present work we have investigated the possible interaction between Bleomycin (B) and UV light or hyperthermia (HT) in the induction of lethal events in diploid yeast populations in the stationary phase of growth. UV and B acting as single agents determine sigmoid survival curves. The combination of UV + B produ...

journal_title：Radiation and environmental biophysics

authors： Barrios E,Candreva EC,Nunes E

更新日期：1991-01-01 00:00:00

abstract：:About a century ago, Conrad Röentgen discovered X-rays, and Henri Becquerel discovered a new phenomenon, which Marie and Pierre Curie later coined as radio-activity. Since their seminal work, we have learned much about the physical properties of radiation and its effects on living matter. Alas, the more we discover, t...

journal_title：Radiation and environmental biophysics

authors： Feinendegen L,Hahnfeldt P,Schadt EE,Stumpf M,Voit EO

更新日期：2008-02-01 00:00:00

abstract：:Several proteins are known to form foci at DNA sites damaged by ionizing radiation. We study DNA damage response by immunofluorescence microscopy after microirradiation of cells with energetic ions. By using microirradiation, it is possible to irradiate different regions on a single dish at different time-points and t...

journal_title：Radiation and environmental biophysics

authors： Greubel C,Hable V,Drexler GA,Hauptner A,Dietzel S,Strickfaden H,Baur I,Krücken R,Cremer T,Friedl AA,Dollinger G

更新日期：2008-11-01 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

authors： Johnston RL,Dunn F

更新日期：1981-01-01 00:00:00

abstract：:To explore possible applications of iodoacetate (IA), a glycolytic inhibitor, in cancer treatment, we screened its cytotoxicity and radioprotective/sensitizing efficacy in three different mammalian cell lines; A549 (human lung carcinoma), MCF7 (human mammary cancer), a non-cancerous CHO (Chinese hamster ovary) cells a...

journal_title：Radiation and environmental biophysics

authors： Yadav U,Anjaria KB,Nairy R,Shirsath KB,Desai UN,Chaurasia RK,Bhat NN,Sapra BK

更新日期：2017-08-01 00:00:00

abstract：:For the estimation of radiation doses to organisms, concentration ratios (C ( R )s) of radionuclides are required. In the present study, C(R)s of various elements were obtained as analogues of radionuclides for algae, molluscs, and crustaceans, in eight estuarine areas around Japan. The elements measured were Na, Mg, ...

journal_title：Radiation and environmental biophysics

authors： Takata H,Aono T,Tagami K,Uchida S

更新日期：2010-11-01 00:00:00