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31722. The suspended magnetic separator with large blocks from NdFeB magnets and its long term technological tests
- Creator:
- Žežulka, Václav and Pavel Straka
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Geologie. Meteorologie. Klimatologie, magnetické obvody, magnetic circuits, technological innovation, magnetic separation, magnetic separators, permanent NdFeB magnets, 7, and 551
- Language:
- English
- Description:
- The article presents a separator whose magnetic circuit is comprised of large blocks from permanent NdFeB magnets and the knowledge gained from its assembly. In the separation zone of this separator, significantly higher values of magnetic induction were reached in comparison with a similar circuit with ferrite magnets. The results of the long-term comparative technological tests are provided of this separator when used in an industrial plant for the separation of undesirable ferromagnetic admixtures and objects (tramp iron) from raw materials for tile production. Throughout these tests, the fundamental influence of the value of magnetic induction in the separation zone on the amount of the captured magnetic fraction was confirmed and high efficiency of the new separator proven., Václav Žežulka and Pavel Straka., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31723. The Swedish housing market from a low income perspective
- Creator:
- Lind, Hans
- Type:
- article, model:article, and TEXT
- Subject:
- housing policy, low-income housing, and Sweden
- Language:
- English
- Description:
- After the economic crisis in the early 1990s there was excess supply of housing, but over the last 25 years demand has increased because of rising population, rising incomes and low levels of housing construction. The result has been rising prices and longer queues to (rent regulated) rental housing. The lack of affordable housing has made the situation especially difficult for low-income "outsiders", e.g. immigrant groups and various marginalized groups. In the debate about explanations and policies one can find demand for "more market", e.g. deregulating the rental market, weaken the municipal planning monopoly and cutting back on building regulations. There are also proposals for "less market", e.g. state directives about municipal planning volumes, subsidies to housing construction and more active municipal housing companies. As the current government is weak, most initiatives comes from the local level, e.g. both below market rents for lower income households and planning for more low-cost housing.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31724. The synapse-like interaction between chloroplast, dictyosome, and other cell compartments during increased ethylene production in leaves of rye (Secale cereale L.)
- Creator:
- Selga, T. and Selga, M.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- electron microscopy, endoplasmic reticulum, ethephon, Golgi appaaratus, intercellular signalling, and mitochondrion
- Language:
- Multiple languages
- Description:
- Rye (Secale cereale L.) plants were treated with an ethylene releaser ethephon (2-chloroethylphosphonic acid) in concentration of 4×10-2 M. We studied electron microscopically, if and how chloroplasts interact with well-documented sites of ethylene production/binding, i.e., with endoplasmic reticulum, dictyosomes, mitochondria, plasma membrane, and tonoplast. During the sharp increase of ethylene synthesis in mesophyll cells of rye leaves, the direct local continguity of chloroplast envelope or envelope protrusions with the above mentioned cell compartments was typical. Moreover, a large number and diversity of versatile chloroplast-dictyosome associations were conspicuous, in which both the chloroplast and each cisterna of dictyosome were capable to exo/endocytosis. The dictyosomes were directed towards the chloroplasts, plasma membrane, or tonoplast both with cis-face, trans-face, or with the rim, they could change their direction or shut up the trans-face, developing simultaneously several flexible chains of vesicular dispatches among chloroplasts and some other cell compartments. This reflects interaction of protein/ethylene producing, photosynthesising, DNA containing compartments, and regulated action of lysosomal system. Structural contacts and vesicular transport among compartments of symplastic system equalises concentrations of H+, Ca2+, etc. ions, as well as provide connection with an apoplast. We propose that ethylene functions in plant mesophyll cells are both as intra/intercellular signalling substance and as phytohormone that regulates gene expression in nuclei, chloroplasts, and mitochondria in a complicated synapse-like process and causes programmed death of leaves of the main stalks of rye for the sake of promoted growth of side shoots. and T. Selga, M. Selga.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31725. The syntax of sentence and text. A festschrift for František Daneš
- Creator:
- Hirschová, Milada
- Format:
- Type:
- model:internalpart and TEXT
- Language:
- English
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31726. The systematic status of Philometra abdominalis Nybelin, 1928 (Nematoda: Philometridae) [= a junior synonym of P. ovata (Zeder, 1803)]
- Creator:
- Moravec, František
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Language:
- English
- Description:
- Examination of the original literature concerning species of Philometra (Philometridae, Dracunculoidea) parasitic in the abdominal cavity of European cyprinids revealed that P. abdominalis Nybelin, 1928 is a junior synonym of P. ovata (Zeder, 1803), a parasite of cyprinids of the genera Gobio, Phoxinus and Leuciscus. The valid name of the species parasitizing cyprinids of the genera Abramis, Rutilus and Vimba, mostly reported erroneously as P. ovata, is P. cyprinirutili (Creplin, 1825) comb. n.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31727. The systematic status of Piscinema barakensis [sic] Gambhir et Ng, 2014 and Rhabdochona carpiae Nimbalkar, Deolalikar et Kamtikar, 2013, two nematodes recently described from freshwater fishes in India
- Creator:
- Moravec, František
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Nematoda, Philometridae, Rhabdochonidae, fish, and Oriental Region
- Language:
- English
- Description:
- Based on the original description, the nematode genus Piscinema Gambhir et Ng, 2014 and its type species, P. barakensis [sic] Gambhir et Ng, 2014 (probably a misidentified physalopterid larvae), are removed from the Philometridae, where they were allocated; they are considered a genus inquirendum and incertae sedis and a species inquirenda, respectively. The poorly described nematode Rhabdochona carpiae Nimbalkar, Deolalikar et Kamtikar, 2013 (Rhabdochonidae) appears largely fabricated and is regarded a species dubia.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31728. The temporal and spatial distribution of rainfall intensity in urban watersheds
- Creator:
- Alied, Ghassan and Havlík, Vladimír
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- rainfall intensity, temporal and spatial distribution, movement of storm events, urban watershed, intenzita deště, časové a plošné rozložení, pohyb srážkové události, and urbanizované povodí
- Language:
- Slovak
- Description:
- Theoretical assumptions and practical approaches to temporal and spatial distribution of rainfall intensity in urban watersheds is still a research topic. The speed and direction of movement of rainfall events above urban watersheds are principal hydrologic parameters, which influence a rainfall-runoff process. This contribution reviews three methods, namely the Inverse Distance-Weighted Method (IDWM), Time Shift Method (TSM) and newly developed Geometrical Method (GM). The principal assumption of all three methods is based on the calculation of fictitious rainfall intensity at a particular location as weighted interpolation among the nearest real rain gauge stations. Any rainfall event above the urban watershed can be classified either as moving or non-moving storm. While the Inverse Distance-Weighted Method can be used for non-moving storms, the other two methods can describe the parameters of moving storms. Model RainGen, which was originally developed to create a basic source of rainfall data for rainfallrunoff mathematical models in urban watersheds, may be used not only for visualization but as well as for comparing of the measured and computed results. Case study for moving storms in Prague shows the results of TSM and GM methods. and Teoretické předpoklady a praktické přístupy k řešení časového a plošného rozložení srážek v urbanizovaných povodích jsou stále předmětem výzkumu. Rychlost a směr pohybu dešťových událostí nad urbanizovanými povodími představují hlavní hydrologické veličiny, které ovlivňují srážko-odtokový proces. Příspěvek se zabývá třemi metodami výpočtu, a to inverzní váhovou metodou, metodou časového posunu a nově navrženou geometrickou metodou. Hlavní předpoklad u všech tří metod je ve zvoleném místě založen na výpočtu fiktivní intenzity deště a to na základě interpolace s využitím váhové funkce mezi nejbližšími srážkoměrnými stanicemi. Každou srážkovou událost nad urbanizovaným povodím lze klasifikovat buď jako pohyblivou, nebo nepohyblivou. Zatímco inverzní váhová metoda může být použita pro nepohyblivé srážkové události, metodu časového posunu a geometrickou metodu lze doporučit pro pohyblivé srážkové události. Model RainGen, který byl původně vytvořen k tvorbě základních srážkových dat pro potřeby matematických modelů povrchového odtoku z urbanizovaných povodí, může být využit nejen k vizualizaci výsledků, ale rovněž k jejich vzájemnému porovnávání. Případová studie pohyblivých srážkových událostí v Praze ukazuje porovnání výsledků metody časového posunu a geometrické metody.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31729. The temporal and spatial effects of reconstructive surgery on the atrophy of hindlimb muscles in anterior cruciate ligament transected rats
- Creator:
- Kaneguchi, Akinori, Ozawa, Junya, Minamimoto, Kengo, and Yamaoka, Kaoru
- Format:
- počítač and online zdroj
- Type:
- model:article and TEXT
- Subject:
- ACL injury, ACL reconstruction, arthrogenic muscle inhibition, disuse, and muscle atrophy
- Language:
- English
- Description:
- After anterior cruciate ligament (ACL) injury, a decrease in muscle strength associated with muscle atrophy is frequently observed. The temporal and spatial effects of reconstructive surgery on muscle atrophy have not been examined in detail. This study aimed to 1) reveal the short and mid-term effects of reconstructive surgery on muscle atrophy, and 2) investigate the differences in the degree of atrophy after ACL reconstruction in the hindlimb muscles. ACL transection with or without reconstructive surgery was performed unilaterally on the knees of rats. Untreated rats were used as controls. At one or four weeks post-surgery, the relative muscle wet weights (wet weight/body weight) of the hindlimb muscles were calculated to assess atrophy. At one week post-surgery, muscle atrophy was induced by ACL transection and further aggravated by reconstructive surgery. Reconstructive surgery facilitated recovery from muscle atrophy in some muscles compared with those without reconstructive surgery (ACL transection alone) at four weeks post-surgery. Muscle atrophy after ACL reconstruction was greater in the rectus femoris and plantar flexors than in the semitendinosus and plantar extensors at one week post-surgery. These results indicate that reconstructive surgery exacerbates muscle atrophy in the first week post-surgery, while facilitating recovery between the first and fourth week post-surgery. After reconstructive surgery, muscle atrophy was observed not only in the quadriceps and hamstrings, but also in the lower leg muscles, suggesting the need for muscle strengthening interventions for the lower leg muscles as well as the quadriceps and hamstrings.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
31730. The The Development of New-Style Public Rental Housing in Shanghai
- Creator:
- Chen, Jie
- Type:
- article, model:article, and TEXT
- Subject:
- public housing, housing policy, urban development, and Shanghai
- Language:
- English
- Description:
- This paper studies the roles of the new-style PRH (public rental housing) programme in Shanghai’s socio-spatial dynamics. It shows that the development of PRH in Shanghai is mainly a result of a deliberate ur-ban development policy in line with other strategies such as city marketing and gentrification. The analysis is augmented with data from a questionnaire survey of PRH tenants in Shanghai. Finally, this paper identifies challenges for the future development of the public rental housing sector in China.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public