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642. Advances in the knowledge of amphizoic amoebae infecting fish

Creator:
Dyková, Iva and Lom, Jiří
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
amphizoic amoebae, fish hosts, Acanthamoeba, Cochliopodium, Filamoeba, Naegleria, Neoparamoeba, Nuclearia, Platyamoeba, Thecamoeba, Vannella, and Vexillifera
Language:
English
Description:
Free-living amoebae infecting freshwater and marine fish include those described thus far as agents of fish diseases, associated with other disease conditions and isolated from organs of asymptomatic fish. This survey is based on information from the literature as well as on our own data on strains isolated from freshwater and marine fish. Evidence is provided for diverse fish-infecting amphizoic amoebae. Recent progress in the understanding of the biology of Neoparamoeba spp., agents responsible for significant direct losses in Atlantic salmon and turbot industry, is presented. Specific requirements of diagnostic procedures detecting amoebic infections in fish and taxonomic criteria available for generic and species determination of amphizoic amoebae are analysed. The limits of morphological and non-morphological approaches in species determination are exemplified by Neoparamoeba, Vannella and Platyamoeba spp., which are the most common amoebae isolated from fish gills, Acanthamoeba and Naegleria spp. isolated from various organs of freshwater fish, and by other unique fish isolates of the genera Nuclearia, Thecamoeba and Filamoeba. Advances in molecular characterisation of SSU rRNA genes and phylogenetic analyses based on their sequences are summarised. Attention is particularly given to specific diagnostic tools for fish-infecting amphizoic amoebae and ways for their further development.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

643. Advertising response to new entry

Creator:
Valei, Azamat, Zápal, Jan, Univerzita Karlova. Centrum pro ekonomický výzkum a doktorské studium, and Národohospodářský ústav (Akademie věd ČR)
Publisher:
CERGE-EI
Format:
electronic, bez média, svazek, and 43 stran : ilustrace.
Type:
model:monograph and TEXT
Subject:
Reklama. Public relations. Média, reklamní strategie, modelování a simulace, advertising strategy, modeling and simulation, 659.113, 519.86/.87, (048.8), 4, and 659
Language:
English and Czech
Description:
Azamat Valei., Obsahuje bibliografii a bibliografické odkazy, České a anglické resumé, and born digital
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

644. Aerial photogrammetry observation of the subsidence depression near Karviná

Creator:
Vlastimil Kajzar, Doležalová, Hana, Kamil Souček, and Staš, Lubomír
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Geologie. Meteorologie. Klimatologie, letecká fotogrammetrie, aerial photogrammetry, subsidence depression, monitoring, GNSS, 7, and 551
Language:
English
Description:
Aerial photogrammetry was chosen as an additional observation method of the subsidence depression that was created above exploited coal mining panels near Karviná. While individual points of a permanent observation network were repeatedly surveyed by GNSS, the whole subsidence depression was surveyed by the aerial photogrammetry. As this method was applied three times (during three years) we can compare its results in individual years and observe the major surface changes on the undermined area. Also, a comparison was realized between the points’ coordinates gained from both aerial photogrammetry and GNSS. The results show that the method of aerial photogrammetry enriches and complements the GNSS observation in monitoring the spatial development and shape of the subsidence depression, especially in the areas of active recultivation., Vlastimil Kajzar, Hana Doležalová, Kamil Souček and Lubomír Staš., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

645. Aerodynamic forces measured on a fluttering profile

Creator:
Vlček, Václav, Zolotarev, Igor, and Kozánek, Jan
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
aeroelastic experiments, self-excited vibrations, wind tunnel, and interferometry
Language:
English
Description:
The study presents evaluation of optical measurements of the air flow field near the fluttering profile NACA0015 with two-degrees of freedom, Mach number of the flutter occurence were M = 0.21 and M = 0.45. Aerodynamic forces (drag and lift components) were evaluated independently on the upper and lower surfaces of the profile. Using the mentioned decomposition, the new information about mechanism of flutter properties was obtained. The forces on the upper and lower surfaces are phase shifted and are partially eliminated as a result of the circulation around the profile. The cycle changes of these forces cause the permanent energy contribution from the airflow to the vibrating system. and Obsahuje seznam literatury
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

646. Aerodynamické modelování nesymetrických revitalizačních prvků v korytech upravených malých vodních toků

Creator:
Havlík, Aleš
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
river restoration, diversity of flow conditions, flow capacity of channel, revitalizace, kapacita koryta, and diversifikace proudění
Language:
Slovak
Description:
Due to renaturalization of trained watercourses, the capacity of the channel is often reduced. This paper deals with influence of non-symetrical obstacles placed into channels of small trained streams upon flow characteristics. In the framework of hydraulic research on aerodynamical model, four types of obstacles of various shape were used. An evaluation of their influence on total channel resistance in dependence on depth of flow and a spacing of the obstacles is presented. and Vlivem revitalizačních zásahů do upravených vodních toků zpravidla dochází ke zmenšení kapacity koryta. Předkládaný článek se zabývá vlivem nesymetrických revitalizačních prvků, vkládaných do upravených koryt malých vodních toků, na charakter proudění. V rámci fyzikálního výzkumu na aerodynamickém modelu byly použity 4 typy prvků, které různým způsobem zasahovali do průtočného profilu. V tomto článku je zhodnocen jejich vliv na celkové odpory koryta v závislosti na hloubce proudění a vzdálenosti prvků.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

647. 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

648. Aeroelasticity of slender plexiglass facades

Creator:
Tesár, Alexander
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
aeroelasticity, equations of motion, frequency domain, laminar and turbulent air flow, plexiglass sheet, slender facades, transient dynamics, wave approach, and wind canal
Language:
English
Description:
Assessment of ultimate aeroelastic response of slender facades equipped with thin plexiglass sheets. The wave approach is used for modeling of aeroelastic wind forcing. The analysis of structural response is based on the transient dynamics. Some theoretical approaches are specified with experimental verification in the wind canal. The comparison of numerical and experimental approaches is made in order to demonstrate the efficiency of the procedures suggested. and Obsahuje seznam literatury
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

650. Afrojoyeuxia gen. n. and Hunkeleriella gen. n., two new genera of cestodes (Cyclophyllidea: Anoplocephalidae) from African rodents

Creator:
Haukisalmi, Voitto
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Cestoda, Paranoplocephala, systematics, taxonomy, Ctenodactylus, Dasymys, and Ethiopian region
Language:
English
Description:
Based on the study of type material, two new genera of cestodes (Cyclophyllidea: Anoplocephalidae) are proposed for Paranoplocephala Lühe, 1910 sensu lato species from African rodents. Afrojoyeuxia gen. n., proposed for A. gundii (Joyeux, 1923) comb. n. from Ctenodactylus gundi (Rothmann) (Hystricomorpha: Ctenodactylidae), is characterized by a high length/width ratio of mature proglottids, longitudinally extensive testicular field positioned anterior to the female glands, an ovoid or subspherical cirrus-sac and a thick, conical cirrus. Hunkeleriella gen. n., proposed for H. dasymidis (Hunkeler, 1972) comb. n. from Dasymys incomtus (Sundevall) (Myomorpha: Muridae), differs from related genera mainly by its short (10-20 mm) and wide strobila and neck, unilateral genital pores (exceptionally with a few changes per strobila), the position of the genital pores (slightly anterior to the middle of proglottid margin) and initially tube-like early uterus (later reticulated). Parandrya Gulyaev et Chechulin, 1996, earlier suggested to be a junior synonym of Paranoplocephala, is considered to be a valid, independent genus. Evidence of non-monophyly and need for a taxonomic revision of Paranoplocephala sensu lato, as well as the phylogenetic position of A. gundii and H. dasymidis are discussed.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

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