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2792. Advanced methods for perfusion analysis in echocardiography

Creator:
Radim Kolář, Jiřík, R., Harabiš, V., Mézl, M., and Bartoš, M.
Format:
print
Type:
article, články, model:article, and TEXT
Subject:
Fyziologie člověka a srovnávací fyziologie, echokardiografie, echocardiography, myocardialo perfusion, ultrasound contrast agent, 14, and 612
Language:
English
Description:
It has been shown that besides positron emission tomography, single photon emission computed tomography and magnetic resonance imaging; contrast echocardiography can be used for qualitative and quantitative myocardial perfusion assessment. In this review, the properties of ultrasound contrast agents, imaging techniques and acquisition methods are shortly described and the possibilities of perfusion echocardiography are summarized. The main focus is put on the description of three perfusion models: mathematical models, physical models assuming an ideal inflow and physical models including inflow measurement., R. Kolář ... [et al.]., and Obsahuje bibliografii a bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2793. Advanced purification of industrial quartz using calcination pretreatment combined with ultrasound-assisted leaching

Creator:
Yang, Changqiao, Han, Shuaishuai, Li, Suqin, and Bai, Jiaxing
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
geodynamika, geomechanika, geofyzika, geologie, ultrazvuk, geodynamics, geomechanics, geophysics, geology, ultrasound, křemen, quartz, high purity quartz, iron removal, calcination pretreatment, gas-liquid inclusions, ultrasound-assisted leaching, 7, and 551
Language:
English
Description:
Purification of quartz using an environment-friendly method is important in the contaminants removal. This paper presents advanced method based on calcination pretreatment combined with ultrasound-assisted leaching, for removing iron impurities from industrial quartz. The solvent used is a mixture comprised by diluted hydrochloric acid and oxalic acid. The effects of experimental parameters were investigated and the purification mechanism was discussed using particle size analyzer, scanning electron microscope and polarized light microscope. SiO2 content of concentrate could be increased from 99.6828% to 99.9047%, which achieved 3N level high purity quartz, and Fe2O3 content reduced from 0.0857% to 0.0223%, under the optimal conditions, i.e., calcination temperature of 900 °C, holding time of 2 h, oxalic acid concentration of 10 g/L, hydrochloric acid concentration of 5%, liquid solid ratio of 5, leaching temperature of 60 °C, ultrasound power of 400 W and treatment time of 30 min. Compared to conventional method, the proposed method significantly accelerates the leaching process and increases the iron removal rate. At the same time, the method also can remove gas-liquid inclusions. and Yang Changqiao, Li Suqin, Bai Jiaxing, Han Shuaishuai.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2794. 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

2795. Advancing the supranational compliance debate – new directions in the enforcement of European union law

Creator:
Waele, Henri de
Type:
article, model:article, and TEXT
Subject:
compliance, European Union Law, citizens’ rights, enforcement procedure, soft law, private enforcement, regulatory fitness checks, and quality of legislation
Language:
English
Description:
For a successful effectuation of the supranational rights of EU citizens and third country nationals,it is crucially important that the rules and principles flowing from the European Treaties and the associatedlegislation are ensured in full. The available methods of public enforcement (in particular the monitoringpowers of the European Commission) are however insufficient to achieve that goal: compliance with the relevantEU rules and norms also depends to a considerable extent on the policy dynamics, public infrastructureand (styles of) administrative governance of the country concerned. This paper makes a modest attempt tofill a gap that is believed to lie between, on the one hand, leading political science theories on the receptionof EU law in the Member States, and on the other, the main legal studies on the quality of legislation and the(in)adequacy of the existing procedural frameworks for effectuating citizens’ rights. The main objective is toexplore some possible alternative avenues for facilitating the interplay between the EU and the national legalorders. By providing illustrations of some existing bottlenecks, asymmetric centrifugal/centripetal forces andavoidable feedback-loops, it points out how current practices may be enhanced, and outlines possible newdirections for securing a more structural domestic compliance record.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2800. Adversativnite nezavisnoslozeni rečenici vo makedonskite srednovekovni rakopisi

Creator:
Gurkova, Aleksandra
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Macedonian studies, Old Church Slavonic, and conjunctions
Language:
Czech
Description:
The article deals with the use of different types of connectors in the adversative complex phrases in Old Church Slavonic and their Greek parallels. The most common and most frequent conjuntions are a, nž, and to a certain extent obače, whereas the particle že is mostly defined as adversative by the semantics of the clauses. In some manuscripts from the 18th and 19th centuries appart from the use of no and a, examples of adversative sentences with the conjuctions ami and tuku are frequent, which are common also in Standard Macedonian (but ami mostly in dialects). The conjuction tuku has developed from the adverb tolku and the conjunction ami is taken from the Greek vernacular ami. The use of conjunctions from other languages - ami from Greek and ama from Turkish which had a significant influence on the spoken (Slavic) language in Macedonia vis-à-vis the language used in the Old Church Slavonic manuscripts shows that it was common to accept a foreign language construction. However, it should be mentioned that both conjunctions in Standard Macedonian are used as a kind of stylistic specifity, usually in colloquial style. The development and use of new conjunctions could also be explained by the phonemic characteristic of the conjuntion nž, to lose the nasal and thus to become not expressive enough as adversative.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

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