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21.
Nineteen strains of Drosophila virilis from diverse geographic locations
were examined by genetic and molecular analyses, revealing (a) 12 strains
with a single copy of the urate oxidase (UO) gene per haploid genome and
(b) 7 strains with a tandem duplication of the UO locus. The D. virilis
strains with the UO duplication appear to have identical restriction maps
of this region, implying either a single origin for the duplication or
several similar events occurring at a hot spot. On the basis of the
location of the duplication breakpoints and the restriction sites flanking
these breakpoints, this duplication probably arose through nonhomologous
recombination involving either a breakage and rejoining event or
replication slippage. because documented cases of intraspecific gene
duplication polymorphism are rare, the D. virilis UO duplication will be
useful in identifying the molecular event giving rise to a gene
duplication.
相似文献
22.
Guliĭ OI Zaĭtsev BD Kuznetsova IE Shikhabudinov AM Karavaeva OA Dykman LA Staroverov SA Ignatov OV 《Biofizika》2012,57(3):460-467
The phage mini-antibodies to bacterial cells of strain Azospirillum brasilense Sp245 were obtained and the possibility of using them for detection of microbial cells by means of a lateral field excited piezoelectric resonator was studied. It has been found that the frequency dependencies of the real and imaginary parts of the electrical impedance of the resonator loaded by the cell suspension A. brasilense Sp245 with the mini-antibodies, significantly differ from those of the resonator with the control cell suspension without mini-antibodies. The concentration limit of possible determination of the microbial cells in their interaction with the mini-antibodies is equal to 10(3) cells/ml. It has been ascertained that detection of A. brasilense Sp245 cells using the mini-antibodies is possible even in the presence of other cultures, for example, E. coli BL-Ril and A. brasilense Sp7 cells. Therefore, it has been shown for the first time that detection of microbial cells by an electro-acoustic sensor is feasible. 相似文献
23.
JC de Mauroy HR Weiss AG Aulisa L Aulisa JI Brox J Durmala C Fusco TB Grivas J Hermus T Kotwicki G Le Blay A Lebel L Marcotte S Negrini L Neuhaus T Neuhaus P Pizzetti L Revzina B Torres PJM Van Loon E Vasiliadis M Villagrasa M Werkman M Wernicka MS Wong F Zaina 《Scoliosis》2010,5(1):1-15
Abstract
Thoracic hyperkyphosis is a frequent problem and can impact greatly on patient's quality of life during adolescence. This condition can be idiopathic or secondary to Scheuermann disease, a disease disturbing vertebral growth. To date, there is no sound scientific data available on the management of this condition. Some studies discuss the effects of bracing, however no guidelines, protocols or indication's of treatment for this condition were found. The aim of this paper was to develop and verify the consensus on managing thoracic hyperkyphosis patients treated with braces and/or physiotherapy.Methods
The Delphi process was utilised in four steps gradually modified according to the results of a set of recommendations: we involved the SOSORT Board twice, then all SOSORT members twice, with a Pre-Meeting Questionnaire (PMQ), and during a Consensus Session at the SOSORT Lyon Meeting with a Meeting Questionnaire (MQ).Results
There was an unanimous agreement on the general efficacy of bracing and physiotherapy for this condition. Most experts suggested the use of 4-5 point bracing systems, however there was some controversy with regards to physiotherapeutic aims and modalities.Conclusion
The SOSORT panel of experts suggest the use of rigid braces and physiotherapy to correct thoracic hyperkyphosis during adolescence. The evaluation of specific braces and physiotherapy techniques has been recommended. 相似文献24.
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Molchanova IV Karavaeva EN Mikhaĭlovskaia LN Pozolotina VN Lobanova LV 《Radiatsionnaia biologiia, radioecologiia / Rossi?skaia akademiia nauk》2004,44(5):603-607
The Techa river was contaminated in 1949-1956 from the nuclear enterprise "Mayak". The investigations were carried out in flood plain of the Techa river in 1992-2001. 90Sr and 137Cs stores were calculated in the soil-vegetation cover. There is uneven character of the spatial radionuclides contamination of the investigated area. The store with 90Sr changes from 25 to 930 kBq/m2 (0.7-25.0 Ci/km2) and that with 137Cs--from 30 to 1700 kBq/m2 (0.8-46.0 Ci/km2). In the preriver-bed soils the ratio 90Sr/137Cs increases with further from discharge point. Individual effective dose was calculated for the Brodocalmak population. 90Sr was revealed in the flood plain soils of the Iset river. The contribution of the contaminated Techa river and its flood plains soils accounted for as by incorporated radionuclides as background gamma-radiation does not exceed 0.13-0.17 mSv/yr if the contaminated Techa river utilization is limited. In other case the contribution of the contaminated Techa river increases to 1.6-3.0 mSv/yr. These values exceed international safety norms. 相似文献
28.
Konovalova NV Karavaeva NA Gribkov AA Luzgina VN Evstigneeva RP 《Bioorganicheskaia khimiia》2000,26(2):112-117
Diporphyrin systems based on tetraphenylporphyrin derivatives bridged with dipeptide or tripeptide spacers containing Gly and Phe residues were synthesized, and their physicochemical properties were studied. 相似文献
29.
Boev S. F. Vagin A. I. Solomatin S. Yu. Savostyanov D. V. Siluyanov V. V. Shmakov A. S. Zaitsev B. D. Teplykh A. A. Borodina I. A. Karavaeva O. A. Guliy O. I. 《Biophysics》2019,64(3):416-423
Biophysics - Abstract—The effect of pulsed terahertz radiation at a wavelength of 66 μm, a pulse duration of 100 ns, and a pulse energy of 200 mJ on a suspension of microbial cells was... 相似文献
30.
J Oloya R Kazwala A Lund J Opuda-Asibo B Demelash E Skjerve TB Johansen B Djønne 《BMC microbiology》2007,7(1):95