364 research outputs found
Infra-Red Surface-Plasmon-Resonance technique for biological studies
We report on a Surface-Plasmon-Resonance (SPR) technique based on Fourier
-Transform - Infra - Red (FTIR) spectrometer. In contrast to the conventional
surface plasmon technique, operating at a fixed wavelength and a variable angle
of incidence, our setup allows the wavelength and the angle of incidence to be
varied simultaneously. We explored the potential of the SPR technique in the
infrared for biological studies involving aqueous solutions. Using computer
simulations, we found the optimal combination of parameters (incident angle,
wavelength) for performing this task. Our experiments with physiologically
important glucose concentrations in water and in human plasma verified our
computer simulations. Importantly, we demonstrated that the sensitivity of the
SPR technique in the infrared range is not lower and in fact is even higher
than that for visible light. We emphasize the advantages of infra red SPR for
studying glucose and other biological molecules in living cells.Comment: 8 pages,8 figure
On the possible influence of radon and aerosol injection on the atmosphere and ionosphere before earthquakes
International audienceA model of the generation of pulses of local electric fields with characteristic time scales of 1?10 min is considered for atmospheric conditions above fracture regions of earthquakes. In the model, it is proposed that aerosols, increased ionization velocity and upstreaming air flows occur at night-time conditions. The pulses of local electric fields cause respective pulses of infrared emissions. But infrared emissions with time scales of 1?10 min were not observed up to now experimentally. The authors think, that the considered non-stationary field and radiation effects might be a new-type of applicable earthquake indicators and ask to perform special earth-based and satellite observations of the night-time atmosphere in seismoactive fracture regions
Morphometric Parameters of Erythrocytes in Juvenile Mandarin Ducks Aix galerkulata
The morphometric parameters of erythrocytes in Mandarin ducks Aix galericulata have never been subjected to study even though this species is common in aviculture. The aim of this study is to investigate the morphometric parameters of erythrocytes in juvenile Mandarin ducks. A total of 1500 erythrocytes obtained from thirty Mandarin ducks were analysed. The smears of the peripheral blood were stained using Diff-Quik stain method, and the length and width of erythrocytes were measured using ImageJ program. The average length of the measured erythrocytes was 11.879 mu m. The maximal measured length of the erythrocytes was 10.O49 mu m, and the minimal measured length was 5.668 pm. The average width of the measured erythrocytes vvas 6.160 pm. The maximal measured width of the erythrocytes was 10.115 pm and the minimal measured width vvas 3.750 mu m. In conclusion, knowing morphometric parameters of Mandarin duck erythrocytes is the first step in evaluation process of erythrocytes functional state and health condition of an individual
ΠΠΎΠ²ΡΡΠ΅Π½ΠΈΠ΅ ΠΏΠΎΠΌΠ΅Ρ ΠΎΠ·Π°ΡΠΈΡΠ΅Π½Π½ΠΎΡΡΠΈ ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ ΠΈ ΡΠ°ΡΠΏΠΎΠ·Π½Π°Π²Π°Π½ΠΈΡ Π³ΠΈΠ΄ΡΠΎΠ»ΠΎΠΊΠ°ΡΠΈΠΎΠ½Π½ΡΡ ΡΠΈΠ³Π½Π°Π»ΠΎΠ² ΠΎΡ ΡΠ΅Π» ΡΠ»ΠΎΠΆΠ½ΠΎΠΉ ΡΠΎΡΠΌΡ Π½Π° ΡΠΎΠ½Π΅ ΡΠ΅Π²Π΅ΡΠ±Π΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ ΠΏΠΎΠΌΠ΅Ρ
Methods of identification and recognition of sonar signals reflected from the bodies with complex geometric shape have been developed and calibrated in hydroacoustic tank and at sea. Their greater noise immunity is achieved in comparison with well-known recognition methods. Comparison of these methods with wave front reversal method is given. Simulation results help to explain well-known fact that dolphins use multiple impulse sounding transmission with unequal interpulse periods.Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½Ρ ΠΈ ΠΏΡΠΎΠ²Π΅ΡΠ΅Π½Ρ Π² Π³ΠΈΠ΄ΡΠΎΠ°ΠΊΡΡΡΠΈΡΠ΅ΡΠΊΠΎΠΌ Π±Π°ΡΡΠ΅ΠΉΠ½Π΅ ΠΈ Π² ΠΌΠΎΡΡΠΊΠΈΡ
ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ ΠΈ ΡΠ°ΡΠΏΠΎΠ·Π½Π°Π²Π°Π½ΠΈΡ Π³ΠΈΠ΄ΡΠΎΠ»ΠΎΠΊΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΡΠΈΠ³Π½Π°Π»ΠΎΠ², ΠΎΡΡΠ°ΠΆΠ΅Π½Π½ΡΡ
ΠΎΡ ΡΠ΅Π» ΡΠ»ΠΎΠΆΠ½ΠΎΠΉ Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΎΡΠΌΡ. ΠΠΎΠΊΠ°Π·Π°Π½Π° ΠΈΡ
Π±Γ³Π»ΡΡΠ°Ρ ΠΏΠΎΠΌΠ΅Ρ
ΠΎΠ·Π°ΡΠΈΡΠ΅Π½Π½ΠΎΡΡΡ ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ ΠΈΠ·Π²Π΅ΡΡΠ½ΡΠΌΠΈ ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ ΡΠ°ΡΠΏΠΎΠ·Π½Π°Π²Π°Π½ΠΈΡ. ΠΡΠΈΠ²Π΅Π΄Π΅Π½ΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΠ΅ ΡΡΠΈΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² Ρ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΎΠ±ΡΠ°ΡΠ΅Π½ΠΈΡ Π²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ³ΠΎ ΡΡΠΎΠ½ΡΠ°. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡΡ ΠΎΠ±ΡΡΡΠ½ΠΈΡΡ ΠΈΠ·Π²Π΅ΡΡΠ½ΡΠΉ ΡΠ°ΠΊΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π΄Π΅Π»ΡΡΠΈΠ½Π°ΠΌΠΈ ΠΌΠ½ΠΎΠ³ΠΎΠΈΠΌΠΏΡΠ»ΡΡΠ½ΡΡ
Π·ΠΎΠ½Π΄ΠΈΡΡΡΡΠΈΡ
ΠΏΠΎΡΡΠ»ΠΎΠΊ Ρ Π½Π΅ΡΠ°Π²Π½ΡΠΌΠΈ ΡΠ°ΡΡΡΠΎΡΠ½ΠΈΡΠΌΠΈ ΠΌΠ΅ΠΆΠ΄Ρ ΠΈΠΌΠΏΡΠ»ΡΡΠ°ΠΌΠΈ
ΠΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ»Π΅ΠΊΡΡΠΎΠΈΠΌΠΏΠ΅Π΄Π°Π½ΡΠΎΠΌΠ΅ΡΡΠΈΠΈ Π² Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠ΅ ΠΎΡΡΡΠΎΠ³ΠΎ ΡΠΈΠ½ΡΡΠΈΡΠ°
For the first time in the rhinological practice the methods of evaluation of the functional state of tissues of nasal cavity that were based on registration of their electrical features-electrical resistance (impedance) and potencial were worked out. In the comparative aspect there were researched the active and the passive electrical features of the tissues of nasal cavity which healthy people and those whose disease is acute sinusitis, have. For the first time the dynamic of electrical features was studied and the most informative electrical rates for the initial diagnostic of acute sinusitis and for evaluation of the effectiveness of appointed treatment were revealed. As a result of researches a new way of noninvasive diagnostic of inflammatory diseases of paranasal sinus was worked out, approved and inserted in practice. (Patent β 2157094, 10.10.2000 Β«The way of diagnostic of inflammatory diseases of paranasal sinusΒ»). The suggested way is simple, reliable; it has high credibility value of revealing the pathologies of paranasal sinus and evaluation of its dynamic. This method may be recommended for the wide usage in hospitals and clinics for diagnostic of acute sinusitis and evaluation of effectiveness of treatment.ΠΠΏΠ΅ΡΠ²ΡΠ΅ Π² ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΈΠ½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠ°ΠΊΡΠΈΠΊΠ΅ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠ° ΠΎΡΠ΅Π½ΠΊΠΈ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠΎΡΡΠΎΡΠ½ΠΈΡ ΡΠΊΠ°Π½Π΅ΠΉ ΠΏΠΎΠ»ΠΎΡΡΠΈ Π½ΠΎΡΠ°, ΠΎΡΠ½ΠΎΠ²Π°Π½Π½Π°Ρ Π½Π° ΡΠ΅Π³ΠΈΡΡΡΠ°ΡΠΈΠΈ ΠΈΡ
ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ² β ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΎΠΏΡΠΎΡΠΈΠ²Π»Π΅Π½ΠΈΡ (ΠΈΠΌΠΏΠ΅Π΄Π°Π½ΡΠ°) ΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π»Π°. Π ΡΡΠ°Π²Π½ΠΈΡΠ΅Π»ΡΠ½ΠΎΠΌ Π°ΡΠΏΠ΅ΠΊΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ ΠΏΠ°ΡΡΠΈΠ²Π½ΡΠ΅ ΠΈ Π°ΠΊΡΠΈΠ²Π½ΡΠ΅ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΡΠΊΠ°Π½Π΅ΠΉ ΠΏΠΎΠ»ΠΎΡΡΠΈ Π½ΠΎΡΠ° Ρ Π·Π΄ΠΎΡΠΎΠ²ΡΡ
Π»ΠΈΡ ΠΈ Π±ΠΎΠ»ΡΠ½ΡΡ
ΠΎΡΡΡΡΠΌ ΡΠΈΠ½ΡΡΠΈΡΠΎΠΌ. ΠΠΏΠ΅ΡΠ²ΡΠ΅ ΠΈΠ·ΡΡΠ΅Π½Π° Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΠ° ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ² ΠΈ Π²ΡΡΠ²Π»Π΅Π½Ρ Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠ²Π½ΡΠ΅ ΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ Π΄Π»Ρ ΠΏΠ΅ΡΠ²ΠΈΡΠ½ΠΎΠΉ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ ΠΎΡΡΡΠΎΠ³ΠΎ ΡΠΈΠ½ΡΡΠΈΡΠ° ΠΈ Π΄Π»Ρ ΠΎΡΠ΅Π½ΠΊΠΈ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ Π½Π°Π·Π½Π°ΡΠ΅Π½Π½ΠΎΠ³ΠΎ Π»Π΅ΡΠ΅Π½ΠΈΡ. Π ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½Π½ΡΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½, Π°ΠΏΡΠΎΠ±ΠΈΡΠΎΠ²Π°Π½ ΠΈ Π²Π½Π΅Π΄ΡΠ΅Π½ Π² ΠΏΡΠ°ΠΊΡΠΈΠΊΡ Π½ΠΎΠ²ΡΠΉ ΡΠΏΠΎΡΠΎΠ± Π½Π΅ΠΈΠ½Π²Π°Π·ΠΈΠ²Π½ΠΎΠΉ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ Π²ΠΎΡΠΏΠ°Π»ΠΈΡΠ΅Π»ΡΠ½ΡΡ
Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ ΠΎΠΊΠΎΠ»ΠΎΠ½ΠΎΡΠΎΠ²ΡΡ
ΠΏΠ°Π·ΡΡ
(ΠΠ°ΡΠ΅Π½Ρ Π½Π° ΠΈΠ·ΠΎΠ±ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ β 2157094 ΠΎΡ 10.10.2000 Β«Π‘ΠΏΠΎΡΠΎΠ± Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ Π²ΠΎΡΠΏΠ°Π»ΠΈΡΠ΅Π»ΡΠ½ΡΡ
Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ ΠΎΠΊΠΎΠ»ΠΎΠ½ΠΎΡΠΎΠ²ΡΡ
ΠΏΠ°Π·ΡΡ
Β»). ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΡΠΉ ΡΠΏΠΎΡΠΎΠ± ΠΏΡΠΎΡΡ, Π½Π°Π΄Π΅ΠΆΠ΅Π½, ΠΈΠΌΠ΅Π΅Ρ Π²ΡΡΠΎΠΊΡΡ ΡΡΠ΅ΠΏΠ΅Π½Ρ Π΄ΠΎΡΡΠΎΠ²Π΅ΡΠ½ΠΎΡΡΠΈ Π²ΡΡΠ²Π»Π΅Π½ΠΈΡ ΠΏΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΎΠΊΠΎΠ»ΠΎΠ½ΠΎΡΠΎΠ²ΡΡ
ΠΏΠ°Π·ΡΡ
ΠΈ ΠΎΡΠ΅Π½ΠΊΠΈ Π΅Π΅ Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ. Π‘ΠΏΠΎΡΠΎΠ± ΠΌΠΎΠΆΠ΅Ρ Π±ΡΡΡ ΡΠ΅ΠΊΠΎΠΌΠ΅Π½Π΄ΠΎΠ²Π°Π½ Π΄Π»Ρ ΡΠΈΡΠΎΠΊΠΎΠ³ΠΎ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π² ΡΡΠ°ΡΠΈΠΎΠ½Π°ΡΠ°Ρ
ΠΈ ΠΏΠΎΠ»ΠΈΠΊΠ»ΠΈΠ½ΠΈΠΊΠ°Ρ
Π΄Π»Ρ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ ΠΎΡΡΡΡΡ
ΡΠΈΠ½ΡΡΠΈΡΠΎΠ² ΠΈ ΠΎΡΠ΅Π½ΠΊΠΈ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠΌΠΎΠ³ΠΎ Π»Π΅ΡΠ΅Π½ΠΈΡ
Operationalizing anthropological theory: four techniques to simplify networks of co-occurring ethnographic codes
The use of data and algorithms in the social sciences allows for exciting progress, but also poses epistemological challenges. Operations that appear innocent and purely technical may profoundly influence final results. Researchers working with data can make their process less arbitrary and more accountable by making theoretically grounded methodological choices. We apply this approach to the problem of simplifying networks representing ethnographic corpora, in the interest of visual interpretation. Network nodes represent ethnographic codes, and their edges the co-occurrence of codes in a corpus. We introduce and discuss four techniques to simplify such networks and facilitate visual analysis. We show how the mathematical characteristics of each one are aligned with an identifiable approach in sociology or anthropology: structuralism and post-structuralism; identifying the central concepts in a discourse; and discovering hegemonic and counter-hegemonic clusters of meaning. We then provide an example of how the four techniques complement each other in ethnographic analysis
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