Triplet state population study in relation to the aggregation of proflavine in frozen solutions.

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：: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

authors： Heyder IR,Pohlit W

更新日期：1979-08-10 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

authors： Silva E

更新日期：1979-02-23 00:00:00

abstract：:Cosmic radiation is an occupational risk factor for commercial aircrews. In this large European cohort study (ESCAPE) its association with cancer mortality was investigated on the basis of individual effective dose estimates for 19,184 male pilots. Mean annual doses were in the range of 2-5 mSv and cumulative lifetime...

journal_title：Radiation and environmental biophysics

authors： Langner I,Blettner M,Gundestrup M,Storm H,Aspholm R,Auvinen A,Pukkala E,Hammer GP,Zeeb H,Hrafnkelsson J,Rafnsson V,Tulinius H,De Angelis G,Verdecchia A,Haldorsen T,Tveten U,Eliasch H,Hammar N,Linnersjö A

更新日期：2004-02-01 00:00:00

abstract：:Those working in interventional cardiology are exposed to varying radiation doses during diagnostic and interventional procedures. The work presented in this paper aimed to monitor the effective doses received by different categories of medical staff members practicing interventional cardiology procedures including se...

journal_title：Radiation and environmental biophysics

authors： Ghany HAA,Diab HM,Salah A,Taha AA

更新日期：2020-11-01 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

authors： Weinreich R,Ritzl F,Feinendegen LE,Schnippering HG,Stöcklin G

更新日期：1975-12-04 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

authors： Toth B,Dose K

更新日期：1976-07-30 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：:During anthropogenic activities, such as agricultural soil management and traffic on unpaved roads, size distribution measurements were performed of atmospheric particulate radionuclides at a site in the Chernobyl 30-km exclusion zone. Analysis of cascade impactor measurements showed an increase of the total atmospher...

journal_title：Radiation and environmental biophysics

authors： Garger EK,Paretzke HG,Tschiersch J

更新日期：1998-10-01 00:00:00

abstract：:The problem of expressing cumulative detrimental effect of radiation exposure is revisited. All conventionally used and computationally complex lifetime or time-integrated risks are based on current population and health statistical data, with unknown future secular trends, that are projected far into the future. It i...

journal_title：Radiation and environmental biophysics

authors： Ulanowski A,Kaiser JC,Schneider U,Walsh L

更新日期：2019-08-01 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：:Native horseradish peroxidase, as well as its reduced and carboxymethylated form, and the apoenzyme, showed resistance to photodynamic action. Sensitivity to this action was detected only in reduced and carboxymethylated apoenzyme, when the photooxidation of its histidine residues was observed. When analyzing the bulk...

journal_title：Radiation and environmental biophysics

authors： Silva E,Barrera M

更新日期：1985-01-01 00:00:00

abstract：:The aim of this study was to verify whether extremely low frequency (ELF) magnetic fields (MF) could affect transposition activity like some environmental stress factors such as heat shock or UV irradiation. Using an Escherichia coli Lac Z(-) strain transformed with a plasmid containing a Tn 10 derivative element expr...

journal_title：Radiation and environmental biophysics

authors： Del Re B,Garoia F,Mesirca P,Agostini C,Bersani F,Giorgi G

更新日期：2003-07-01 00:00:00

abstract：:In spite of a well-known relationship between exposure to radiation and increased risk for cancer development, the biological mechanisms involved in radiation-induced carcinogenesis remain poorly documented. Various hypotheses are discussed in this paper. It appears that radiation cannot be directly responsible for th...

journal_title：Radiation and environmental biophysics

authors： Sabatier L,Lebeau J,Dutrillaux B

更新日期：1995-11-01 00:00:00

abstract：:Growth rates and cell diameters were determined from 12 species of plant roots exposed to a 60-Hertz (Hz) electric field of 360 Volts per meter (V/m) in an aqueous inorganic nutrient medium [conductivity: 0.07-0.09 Siemens per meter (S/m)]. The degree of growth depression ranged from zero to nearly 100 percent of cont...

journal_title：Radiation and environmental biophysics

authors： Inoue M,Miller MW,Carstensen EL,Brayman AA

更新日期：1985-01-01 00:00:00

abstract：:The influence of microgravity on the repair of x-ray-induced DNA double-strand breaks was studied in the temperature-conditional repair mutant rad54-3 of diploid yeast Saccharomyces cerevisiae. Cells were exposed on the ground and kept at a low temperature until microgravity conditions were achieved. In orbit, they we...

journal_title：Radiation and environmental biophysics

authors： Pross HD,Kiefer J

更新日期：1999-07-01 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：:This study examined the effects of three disasters (the Great East Japan Earthquake of March 11, 2011, followed by a tsunami and the Fukushima Daiichi Nuclear Power Plant accident) on feeding methods and growth in infants born after the disasters. Using results from the Fukushima Health Management Survey, Soso Distric...

journal_title：Radiation and environmental biophysics

authors： Kyozuka H,Yasuda S,Kawamura M,Nomura Y,Fujimori K,Goto A,Yasumura S,Abe M

更新日期：2016-05-01 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：:In the work presented here, changes in haematopoiesis of mice (B6129SF2/J) were studied 1 year after their whole-body exposure to a dose of 7 Gy (72% of mice survived). The irradiated mice were compared with non-irradiated younger (4 months of age) and older (16 months of age) mice. There was a significant increase in...

journal_title：Radiation and environmental biophysics

authors： Vávrová J,Sinkorová Z,Rezáčová M,Tichý A,Filip S,Mokrý J,Lukášová E

更新日期：2012-05-01 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：:The TEL1 gene from Saccharomyces cerevisiae has been shown to be the closest sequence homologue to ATM, the gene mutated in ataxia-telangiectasia (A-T) patients. Functional homology shared between the ATM and Tell proteins has recently been demonstrated based on heterologous expression of the TEL1 gene in human cells ...

journal_title：Radiation and environmental biophysics

authors： Cao JP,Meyn MS,Eckardt-Schupp F,Fritz E

更新日期：2001-12-01 00:00:00

abstract：:The observable responses of living systems to ionizing radiation depend on the level of biological organization studied. Understanding the relationships between the responses characteristic of the different levels of organization is of crucial importance. The main objective of the present study is to investigate how s...

journal_title：Radiation and environmental biophysics

authors： Madas BG,Balásházy I

更新日期：2011-11-01 00:00:00

abstract：:Mass attenuation coefficient, μm, atomic cross-section, σi, electronic cross-section, σe, effective atomic number, Zeff and effective electron density, Nel, were determined experimentally and theoretically for some vitamins (retinol, beta-carotene, thiamine, riboflavin, niacinamide, pantothenic acid, pyridoxine, bioti...

journal_title：Radiation and environmental biophysics

authors： Demir D,Turşucu A,Oznülüer T

更新日期：2012-11-01 00:00:00

abstract：:The study reported in the present paper aimed to evaluate the effective energy (Eeff) of X-rays emitted from the surface of a bare X-ray probe and from different spherical applicators with various diameters, which are widely employed for low kV intraoperative radiotherapy (IORT) of breast cancer. A previously validate...

journal_title：Radiation and environmental biophysics

authors： Shamsabadi R,Baghani HR,Mowlavi AA,Azadegan B

更新日期：2021-01-03 00:00:00

abstract：:After ingestion or inhalation of radionuclides, internal organs of the human body will be exposed to ionising radiation. Current risk estimates of radiation-associated cancer from internal emitters are largely based on extrapolation of risk from high-dose externally exposed groups. Concerns have been expressed that ex...

journal_title：Radiation and environmental biophysics

authors： Little MP,Hall P,Charles MW

更新日期：2007-11-01 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 effect of ionizing irradiation on the physiological activity of cyclic adenosine monophosphate (cAMP) in smooth muscle preparations from frog lung was studied. cAMP, given as dibutyryl salt (dib-cAMP) inhibited the radiation induced contractions of the muscle in a manner similar to the action of theophylline. In v...

journal_title：Radiation and environmental biophysics

authors： Schachinger L,Michailov M,Owusa Daaku S,Prechter I,Klöter H,Schippel C

更新日期：1982-01-01 00:00:00

abstract：:Blue (F450) and green (F530) leaf fluorescence were studied together with the red chlorophyll fluorescence (emission maxima F690 and F735) during light-induced chlorophyll fluorescence induction kinetics (Kautsky effect) in predarkened leaves of wheat (Triticum aestivum L.) and soybean (Glycine max L.). The intensity ...

journal_title：Radiation and environmental biophysics

authors： Stober F,Lichtenthaler HK

更新日期：1993-01-01 00:00:00

abstract：:The objective of the present work is to apply the plasma clearance parameters to strontium, previously determined in our laboratory, to improve the biokinetic and dosimetric models of strontium-90 ((90)Sr) used in radiological protection; and also to apply this data for the estimation of the radiation doses from stron...

journal_title：Radiation and environmental biophysics

authors： Li WB,Höllriegl V,Roth P,Oeh U

更新日期：2008-04-01 00:00:00