For the first time Mössbauer data of geochemically completely characterized and genetically exactly classified dioctahedral
2M1 micas from the pegmatitic district Alto Ligonha /Northern Mozambique/ are given. The results of the iron distribution allow
to draw qualitative conclusions concerning the redox potential during the formation of the deposit.
By simulation experiments with a 10–5 mol/l solution of iodododecane labeled with131I in n-dodecane the influence of various materials and conditions, which are possible in nuclear fuel reprocessing, has been investigated. The formation of decomposition products was detected via HPLC with a radioactivity monitor. By means of252Cf plasma-desorption mass spectrometry (PDMS) the decomposition products were identified. It was found that a temperature of 100°C favored the formation of iodoalkanes with chain lengths of C1 to C11. The presence of TBP(tri-n-butyl-phosphate) accelerated the decomposition of iodododecane. In pure TBP only iodobutane was formed as a decomposition product.
Authors:O. Kindel, F. Herrmann, L. Schmidt, and P. Patzelt
In kerosene samples from nuclear fuel reprocessing, iodoalkanes with chain-lengths from C4 to C13 have been identified. The kerosene samples were purified by means of solid-phase extraction. By this method other fission products like125Sb and106Ru were quantitatively removed from the solution. The only remaining radioactive nuclide was thus129I. The iodoorganic compounds in the kerosene from the solvent were enriched from 6000 Bq/L to 100 000 Bq/L129I by vacuum distillation. Chromatographic separation by HPLC, fractionation, and -measurement of the fractions showed that at least one polar and one nonpolar iodoorganic compound were present. Derivatisation of the iodoorganic compounds with, 1,4-diazabicyclo-2,2,2-octane to quatermary ammonium salts and252Cf plasma desorption mass spectrometry of the products revealed that the main iodoorganic constituents in the kerosene were iodobutane as polar and iodododecane as nonpolar compound in approximately equal concentrations.
Authors:Gabriella Gombos Császár, V. Bajsz, E. Sió, V. Steinhausz Tóth, B. Schmidt, L. Szekeres, and J. Kránicz
As a prevention, a physically active lifestyle including the performance of weight-bearing exercises is important to enhance and maintain bone mineral content. Fifty young women were selected for the study. Twenty-five women carried out a specific training directed by a physiotherapist in the training group (TG), while 25 women were walking for 60 minutes in the control group (CG). Total and bone-specific alkaline phosphatase (ALP and BALP) and C-terminal cross-linked telopeptide (CTX) levels were measured at the beginning and at the end of exercise. The most remarkable change was seen in CTX levels (TG −28.89%, p < 0.001; CG −52.54%, p < 0.001), and there was also a significant difference in the values of CTX between TG and CG (p = 0.012). Therefore, walking more significantly reduced the level of CTX than special exercise. The decrease of BALP in TG was considerable but not significant (TG −4.63%, p = 0.091), while BALP levels dropped significantly in CG (−7.65%, p = 0.011), and there was a non-significant difference between the two groups (p = 0.22). Regarding the ALP level, a significant reduction was detected in TG and CG (−6.84%, p < 0.001 vs. −4.57%, p < 0.001). This study reveals that the 60-minute, middle-intensity training and the brisk walking have an immediate effect on bone metabolic markers.
Authors:J. Csapó, J. Schmidt, Zs. Csapó-Kiss, G. Holló, I. Holló, L. Wágner, É. Cenkvári, É. Varga-Visi, G. Pohn, and G. Andrássy-Baka
In the past years several methods have been developed for the determination of the proportion of the nitrogen-containing substances of microbial origin passed from the rumen into the abomasum or the small intestine. Recently, on examining the D-amino acid content of foodstuffs, particularly milk and milk products, it has been observed that, in addition to D-Ala, D- glutamic acid (D-Glu) and D-aspartic acid (D-Asp) can also be detected in similar quantities, primarily in products which have links with bacterial activity. This gave rise to the idea of examining the diaminopimelic acid (DAPA), D-Glu and D-Asp content of bacteria extracted from the rumen of cattle and that of chyme from the same cattle, in order to determine the type of relation existing among these three components, and to establish whether D-Asp and D-Glu can be used in the estimation of protein of bacterial origin. On determination of the DAPA, D-Asp and D-Glu content by means of amino acid analyser and high performance liquid chromatography of duodenal chyme from five growing bulls and of ruminal bacteria from the same bulls, the following values were established. For chyme (and, in brackets, for ruminal bacteria) r value calculated by means of linear regression was 0.78 (0.76) between DAPA and D-Asp, and 0.70 (0.81) between DAPA and D-Glu. The r values between the crude protein content of ruminal bacteria and the markers examined were found to be the following: DAPA, 0.74; D-Asp, 0.73; D- Glu, 0.61. In the model experiment performed for the re-obtaining of values for protein of bacterial origin the theoretical values were determined on the basis of D-Asp and D-Glu and values approximately 10% higher than the theoretical value on the basis of DAPA. It is therefore recommended that in addition to DAPA these other two amino acids be included among the bacterial protein markers.
Authors:Imre Rurik, W. G. Wienke Boerma, László Róbert Kolozsvári, Levente István Lánczi, Lajos Mester, Csaba Móczár, L. A. Willemijn Schäfer, Péter Schmidt, Péter Torzsa, Mária Végh, and P. Peter Gronewegen
Az alapellátás fontosságát már évtizedekkel ezelőtt felismerték és sok fejlett ország egészségügyében prioritást kapott. Európában igen eltérő keretek és feltételek között működnek az egyes országok alapellátási rendszerei. A QUALICOPC vizsgálat során 31 európai és három tengerentúli országban hasonlítják össze az alapellátás költségét, minőségét és méltányosságát. Hasonlóan a többi részt vevő országhoz, Magyarországon is a reprezentativitásra törekedve, országos koordináció alapján, 222 háziorvosi körzetben történt kérdőíves felmérés, a praxisokban dolgozó háziorvosok munkakörülményei, működési feltételei, megengedett és gyakorolt kompetenciája, érdekeltségi rendszere irányában. Minden körzetben 10 betegnek az ellátással kapcsolatos tapasztalatait, igényét és véleményét is kikérték a független kérdezőbiztos munkatársak. A szerzők a résztvevők és a metodika leírása mellett a vizsgálat kezdeti tapasztalatait mutatják be. A vizsgálat befejezését követően a részt vevő országokban nyert eredmények megismerése segítheti a politikai döntéshozókat és az egészségügy tervezőit. Orv. Hetil., 2012, 153, 1396–1400.
Authors:B. Bisplinghoff, V. Bradnova, R. Brandt, K. Dwivedi, V. Butsev, E. Friedlander, S. Gosh, Guo Shi-Lun, M. Heck, Jin Huimin, M. Krivopustov, B. Kulakov, C. Laue, L. Lerman, Th. Schmidt, A. Sosnin, and Wang Yu-Lan
An extended Cu-target was irradiated with 22 and 44 GeV carbon ions for about 11.3 and 14.7 hours, respectively. The upper side of the target was in contact with a paraffin-block for the moderation of secondary neutrons. Small holes in the moderator were filled with either lanthanum salts or uranium oxide. The reaction
was studied via the decay of239Np(2.3 d) as well as the reaction U(n,f) using radiochemical methods. In addition, solid state nuclear track detectors were used for fission studies in gold. The yields for the formation of (n,) products agree essentially with other experiments on extended targets carried out at the Dubna Synchrophasotron (LHE, JINR). To a first approximation, the breeding rate of (n, ) products doubles when the carbon energy increases from 22 to 44 GeV. If, however, results at 44 GeV are compared in detail to those at 22 GeV, we observe an excess of (37±9)% in the experimentally observed239Np-breeding rate over theoretical estimations. Experiments using solid state nuclear track detectors give similar results. We present a conception for the interpretation of this fact: There is the evident connection between anomalies we observe in the yield of secondary particles in relativistic heavy ion interactions above a total energy of approximately 30–35 GeV and increased yield of neutrons in this energy region.
Authors:Cs. Molnár, Zs. Molnár, Z. Barina, N. Bauer, M. Biró, L. Bodonczi, A. Csathó, J. Csiky, J. Deák, G. Fekete, K. Harmos, A. Horváth, I. Isépy, M. Juhász, J. Kállayné Szerényi, G. Király, G. Magos, A. Máté, A. Mesterházy, A. Molnár, J. Nagy, M. Óvári, D. Purger, D. Schmidt, G. Sramkó, V. Szénási, F. Szmorad, Gy. Szollát, T. Tóth, T. Vidra, and V. Virók
The first version of the map of the Hungarian vegetation-based landscape regions were prepared at the scale of 1: 200,000 (1 km or higher resolution). The primary goal of the map was to provide an exact background for the presentation and evaluation of the data of the MÉTA database. Secondly, we intended to give an up-to-date and detailed vegetation-based division of Hungary with a comprehensive nomenclature of the regions. Regions were primarily defined on the basis of their present zonal vegetation, or their dominant extrazonal or edaphic vegetation. Where this was not possible, abiotic factors that influence the potential vegetation, the flora were taken into consideration, thus, political and economical factors were ignored. All region borders were defined by local expert botanists, mainly based on their field knowledge. The map differs in many features from the currently used, country-wide, flora-or geography-based divisions in many features. We consider our map to be temporary (i.e. a work map), and we plan to refine and improve it after 5 years of testing.