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2. Aeroelastic sensitivity analysis of airliner wing

Creator:
Čečrdle, Jiří and Vích, Ondřej
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
aeroelasticity, flutter, eigenvalue, sensitivity, and FNG wing
Language:
English
Description:
This paper describes the airliner wing flutter sensitivity analysis. The sensitivity coefficients define the influence of the structural parameter changes to tthe structure eigenvalue and flutter stability characteristics. Evaluated structural parameters represent the possible changes of the structure due to the installation of the smart high-lift devices at the leading and trailing edge region. In general, we can suppose the increasing of the mass and mass moment of inertia around the elastic axis and decreasing of the stiffness. Described effects are ordinarily considered destabilizing regarding the flutter. The main aim of the presented work is to evaluate the impact of components to the stability and to define the most critical regions or parameters. and Obsahuje seznam literatury
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Anoplocephalid cestodes of veterinary and médical significance: a review

Creator:
Denegri, Guillermo, Bernadina, Wilbert, Perez-Serrano, Jorge, and Rodriguer-Caabeiro, Filomena
Format:
print
Type:
model:internalpart and TEXT
Subject:
Anoplocephalidae, veterinary importance, medical importance, biological cycle, and review
Language:
English
Description:
Cestodes of the family Anoplocephalidae Cholodkovsky, 1902, in their adult form, parasitize a variety of hosts, including reptiles, birds and mammals. To complete their life cycle, an intermediate host is required. This study gives a critical review of the life cycles of genera principally important to veterinary medicine (but sporadically infecting man): Anoplocephalinae (Anoplocephala, Anoplocephaloides, Bertiella and Monieziu) and Thysanosomatinae (Avitellina, Stilesia, Thysaniezia and Thysu-nosomu), using data reported by others and our own observations. The accepted paradigm on the biology of the anoplocephalid cestodes is that oribatid mites (Acarina) serve as intermediate hosts. However, as regards the genera Avitellina, Thysaniezia and Thysanosoma, it is still unclear whether oribatid mites are indeed the intermediate hosts, as larval forms (cysticercoids) have also been found in collcmbolans and psocids. Using the controversial biological cycle of Thysanosoma actinioides (Diesing, 1834), a theoretical methodological research proposal for parasitology was constructed which attempts to define a conceptional mark enabling us to predict and explain the parasite-hosts’ related phenomenon. Aspects of this proposal are discussed using the biology of the cestodes of family Anoplocephalidae, as examples.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

5. Comparisons of molecular karyotype and RAPD patterns of anuran trypanosome isolates during long-term in vitro cultivation

Creator:
Zhao-Rong, Lun and Desser, Sherwin S.
Format:
print
Type:
model:internalpart and TEXT
Subject:
molecular karyotyping, random amplified polymorphic DNA, anuran cultivation trypanosomes, and in vitro
Language:
English
Description:
The patterns of random amplified fragments and molecular karyotypes of 12 isolates of anuran trypanosomes continuously cultured in vitro were compared by random amplified polymorphic DNA (RAPD) analysis and pulsed field gradient gel electrophoresis (PFGE). The time interval between preparation of two series of samples was one year. Changes were not observed in the number and size of sharp, amplified fragments of DNA samples from both series examined with the ten primers used. Likewise, changes in the molecular karyotypes were not detected between the two samples of these isolates. These results suggest that the molecular karyotype and the RAPD patterns of the anuran trypanosomes remain stable after being cultured continuously in vitro for one year.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

7. Experimental investigations and methodology of making energy balance of three-way exhaust gases catalytic reactor

Creator:
Ambrozik, Andrzej
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
energy balance and catalytic reactor
Language:
English
Description:
The paper presents selected experimental results for three-way exhaust gases catalytic reactor. Particular attention is paid to the difference in exhaust gases temperature measured at the catalyst inflow and outflow and the conversion of exhaust gases basic components. The energy balance proposed for gthe reactor takes into account the calculations of the effects of thermal reactions taking place in it. It is indicated that difference in temperatures of exhaust gases flowing through catalyst could be applied as a diagnostic signal.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

10. Magnetic fields of the Sun and stars

Creator:
Bumba, V.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
solar physics, solar activities, and magnetic fields
Language:
Czech
Description:
We summarize the main results obtained by the joint effort of solar and stellar physicists in investigating solar and solar type activities in the low-mass main-sequence stars. We demonstrate the basic role of the magnetic field in this activity and the importance of its interaction with the convection and differential rotation of each star. We compile the data obtained by ground-based optical, radio and space ohservations of these stars which provide some idea about the physical conditions in the stellar photospheres, chromospheres and coronae, their activity periodicities and relations of this activity to other stellar parameters. We discuss the possible depth of the dynamo action in the Sun and stars in its relation to the convective zone. We present some results of the method of direct stellar magnetic field measurements in comparison with various indirect evidence of the action of stellar magnetic fields. We also show some observed differences both between the sun- and star-spots, and plages, and we bring information concerning stellar flares. Finally, to compare the main behaviour of magnetic fields on the Sun and stars and the characteristics of the solar and stellar activities, we report some of the new observational results concerning the mutual relation of magnetic and other activities with torsional oscillations, various regularities in latitudinal and longitudinal background field concentration shifts, differential rotation and convection. We also summarize our current knowledge of active region energetics and developments.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public