Effects of sparsely and densely ionizing radiation on plants.

abstract：:Hematoporphyrin (Hp) solutions were subjected to a wide range high intensity (0.2-10.0 GW/cm2) near-UV laser pulse radiation (lambda exc = 355 nm, pulse duration 30 ps). The formation of stable Hp photoproducts was followed by UV-VIS absorption spectroscopy and liquid-gel column chromatography. As judged by the influe...

journal_title：Radiation and environmental biophysics

authors： Gantchev T,Keskinova E,Kaltchev M,Angelov D

更新日期：1990-01-01 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：:A method which allows growth of normal human tissue to be studied in vitro is used to investigate possible interactive effects of radiation and environmentally important carcinogens on oesophageal and urothelial cell growth. Carcinogens chosen were selected for their known or suspected effect on the oesophageal mucosa...

journal_title：Radiation and environmental biophysics

authors： Mothersill C,Cusack A,Seymour CB

更新日期：1989-01-01 00:00:00

abstract：:The major goal of this study was to identify and quantitatively describe the association between the characteristics of chronic (low-dose rate) exposure to (low LET) ionizing radiation and cellularity of peripheral blood cell lines. About 3,200 hemograms (i.e., spectra of blood counts) obtained over the years of maxim...

journal_title：Radiation and environmental biophysics

authors： Akleyev AV,Akushevich IV,Dimov GP,Veremeyeva GA,Varfolomeyeva TA,Ukraintseva SV,Yashin AI

更新日期：2010-05-01 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

authors： Eichler J,Knof J,Lenz H

更新日期：1977-10-12 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：: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：:Radiocaesium absorption and retention in reindeer (Rangifer tarandus) calves was compared in groups fed diets containing different proportions of lichen and concentrates, and different chemical forms of radiocaesium ((134)CsCl in solution or fallout from the Chernobyl accident). Daily intakes of fallout radiocaesium w...

journal_title：Radiation and environmental biophysics

authors： Skuterud L,Pedersen Ø,Staaland H,Røed KH,Salbu B,Liken A,Hove K

更新日期：2004-12-01 00:00:00

abstract：:The biological phenomena observed at low doses of ionizing radiation (adaptive response, bystander effects, genomic instability, etc.) are still not well understood. While at high irradiation doses, cellular death may be directly linked to DNA damage, at low doses, other cellular structures may be involved in what are...

journal_title：Radiation and environmental biophysics

authors： Cunha M,Testa E,Komova OV,Nasonova EA,Mel'nikova LA,Shmakova NL,Beuve M

更新日期：2016-03-01 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

authors： Stolzenberg SJ,Torbit CA,Edmonds PD,Taenzer JC

更新日期：1980-01-01 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

authors： Hübner GE,von Wangenheim KH,Feinendegen LE

更新日期：1982-01-01 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

authors： Sontag W

更新日期：1977-04-27 00:00:00

abstract：:Combined action of irradiation (IR), shear stress, and high blood pressure is well recognized to induce damage to vasculature, while data on pathological effects of IR in large peripheral vessels with low blood pressure are scarce. The purpose of the present study was hence to investigate time- and dose-dependent effe...

journal_title：Radiation and environmental biophysics

authors： Patties I,Habelt B,Rosin B,Dörr W,Hildebrandt G,Glasow A

更新日期：2014-03-01 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 effect of supplying three different stable iodine levels (about 70, 80, and 160 mg day-1) in the daily feed of four dairy cows has been studied for the excretion pattern of 131I. None of the different treatments had a statistically significant effect. A mean milk transfer coefficient of 0.015 +/- 0.001 d l-1 was d...

journal_title：Radiation and environmental biophysics

authors： Voigt G,Schotola C,Probstmeier G,Röhrmoser G

更新日期：1994-01-01 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：:The sulphur-containing radioprotectors mercaptoethylamine (MEA), aminoethylisothiourea (AET), 2- aminothiazoline , 4-oxo-2- aminothiazoline , and S-S-3- oxapentane -1,5- diisothiourea , and the radioprotective biogenic amines serotonin, histamine, and dopamine, caused the elevation of cAMP content and intensified the ...

journal_title：Radiation and environmental biophysics

authors： Sobolev AS,Chirkov YuYu,Tertov VV,Kazarov AR

更新日期：1984-01-01 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

authors： Lamprecht I,Schaarschmidt B,Welge G

更新日期：1976-03-30 00:00:00

abstract：:The potential of proton microchannel radiotherapy to reduce radiation effects in the healthy tissue but to keep tumor control the same as in conventional proton therapy is further elucidated. The microchannels spread on their way to the tumor tissue resulting in different fractions of the healthy tissue covered with d...

journal_title：Radiation and environmental biophysics

authors： Girst S,Greubel C,Reindl J,Siebenwirth C,Zlobinskaya O,Dollinger G,Schmid TE

更新日期：2015-08-01 00:00:00

abstract：:Activity concentrations of the selected radionuclides (40)K, (226)Ra and (232)Th were measured in surface soil samples collected from 38 cities in the southwest region of Nigeria by means of gamma spectroscopy with a high-purity germanium detector. Measured activity concentration values of (40)K varied from 34.9 +/- 4...

journal_title：Radiation and environmental biophysics

authors： Ajayi OS

更新日期：2009-08-01 00:00:00

abstract：:Since the early 1990s, information on radiation-exposed populations other than those exposed from the Chernobyl accident in 1986 has become increasingly available for international scientific research. It is essential to understand how the cohorts of exposed populations have been defined and what mechanisms can be use...

journal_title：Radiation and environmental biophysics

authors： Winkelmann RA,Tretyakov FD,Startsev NV,Kolyado IB,Gusev BI,Grosche B,Storm HH,Hall P

更新日期：2002-03-01 00:00:00

abstract：:The risk of cancer after diagnostic X-rays received as fetus or during early childhood has been investigated in many studies. The results of recent epidemiological studies are summarized in a present systematic review. The strategies for literature search, inclusion criteria, and items for study quality assessment wer...

journal_title：Radiation and environmental biophysics

authors： Schulze-Rath R,Hammer GP,Blettner M

更新日期：2008-07-01 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：:Large lung sections of humans of advanced adult age revealed a markedly nonuniform retention pattern of dense anthracotic particle aggregates, with an impressive accumulation of this material along pulmonary lymphatics, i.e. the deep (peribronchial), septal (perivenous) and superficial (pleural) networks. Conversely, ...

journal_title：Radiation and environmental biophysics

authors： Cottier H,Meister F,Zimmermann A,Kraft R,Burkhardt A,Gehr P,Poretti G

更新日期：1987-01-01 00:00:00

abstract：:Data on rats exposed to cigarette smoke before or after exposure to radon are used to estimate smoke-dependent parameters of the biologically based two-stage clonal expansion model. The baseline parameters and the action of radon acting on initiation and promotion were fixed based on earlier work. Cigarette smoke acti...

journal_title：Radiation and environmental biophysics

authors： Heidenreich WF,Morlier JP,Monchaux G

更新日期：2005-10-01 00:00:00

abstract：:The Auger electron emitter 123I was examined in the form of 4-[123I]iodoantipyrine and as [123I]NaI for its effectiveness in killing cells of different sensitivity to photon irradiation. Micronucleus assays showed that 4-[123I]iodoantipyrine is 2-3 times more effective in cell inactivation than [123I]NaI. This can be ...

journal_title：Radiation and environmental biophysics

authors： Smit BS,Slabbert JP,Reinecke SA,Böhm L

更新日期：2001-03-01 00:00:00

abstract：:Many experimental studies are carried out to compare biological effectiveness of high dose rate (HDR) with that of low dose rate (LDR). The rational for this is the uncertainty regarding the value of the dose rate effectiveness factor (DREF) used in radiological protection. While a LDR is defined as 0.1 mGy/min or low...

journal_title：Radiation and environmental biophysics

authors： Olofsson D,Cheng L,Fernández RB,Płódowska M,Riego ML,Akuwudike P,Lisowska H,Lundholm L,Wojcik A

更新日期：2020-08-01 00:00:00

abstract：:The potential of heavy ion therapy for clinical use in cancer therapy stems from the biological parameters of heavy charged particles and their precise dose localization. Biologically, carbon, neon, and other heavy ion beams (up to about silicon) are clinically useful in overcoming the radioresistance of hypoxic tumor...

journal_title：Radiation and environmental biophysics

authors： Castro JR

更新日期：1995-03-01 00:00:00

abstract：:The probability of the formation of ionization clusters by primary alpha-particles at 5.4 MeV in nanometric volumes of propane was studied experimentally and by Monte Carlo simulation, as a function of the distance between the center line of the particle beam and the center of the target volume. The volumes were of cy...

journal_title：Radiation and environmental biophysics

authors： De Nardo L,Colautti P,Conte V,Baek WY,Grosswendt B,Tornielli G

更新日期：2002-12-01 00:00:00