457 research outputs found
Hard Coal Subsidies: A Never-Ending Story?
No full textIn Germany, hard coal has been subsidized for almost half a century. Despite the declining significance of hard coal production for the domestic labor market, the magnitude of subsidies increased until the middle of the last decade. In 1996, they peaked at € 6.7 bill.While German hard coal subsidies have been shrinking to € 2.7 bill. in 2005, it is very likely that they will be extended well into the next decade and even beyond. This article discusses the feeble arguments raised by the proponents of hard coal subsidization in Germany and other EU countries. Most importantly, in addition to the drain imposed on public budgets, these subsidies imply a substantial opportunity cost, leading funds away from alternative, more beneficial public investments. From a social welfare perspective, we therefore recommend the rapid abolition of these subsidies not only in Germany, where in nominal terms the accumulated amount of subsidies has now by far exceeded € 130 bill., but all across Europe.Energy policy, energy security, coal mining
Entwicklung und Evaluation eines Konzeptes zur berufsübergreifenden Zusammenarbeit bei Patientinnen und Patienten mit palliativem Versorgungsbedarf (KOPAL) – Studienprotokoll
No full textMarx G, Mallon T, Nauck F, et al. Entwicklung und Evaluation eines Konzeptes zur berufsübergreifenden Zusammenarbeit bei Patientinnen und Patienten mit palliativem Versorgungsbedarf (KOPAL) – Studienprotokoll. In: 13. Kongress der Deutschen Gesellschaft für Palliativmedizin. Zeitschrift für Palliativmedizin. Vol 21. Stuttgart: Georg Thieme Verlag; 2020
Structural evolution of palygorskite for reinforcing the performance of polypropylene
No full textRaw palygorskite (RPal) and its structural evolution products (OPal) were modified with silane coupling agent KH-570 to form silanized KRPal and KOPal nanorods, which were used as eco-friendly nanofillers to prepare polypropylene/KRPal (PP/KRPal) and polypropylene/KOPal (PP/KOPal) organic–inorganic composites. Structure characterization results revealed that moderate oxalic acid (OA) leaching process can break Si-O-M bonds (M represents Mg, Al, etc.) of RPal nanorods to produce more active silanol groups, thereby improving the dispersibility, surface reactivity and surface silanization modification efficiency of RPal nanorods. After 24 h of OA leaching and silanization, the KOPal-24 h nanorod has the highest silane grafting rate of 4.05 %, which is significantly higher than that of KRPal (only 0.61 %). As a result, KOPal (especially KOPal-24 h) as a potential nanofiller improved the mechanical properties of PP/Pal composites more effectively than KRPal (tensile strength reaches 56.77 MPa for the PP/KOPal-24 h composite), which results from the large aspect ratio and relatively higher surface activity of OPal nanorods. In short, the reinforcing performance of Pal nanorods towards PP can be improved significantly by a simple acid leaching treatment, which would provide a universal and effective method to expand the potential application of natural nanoclays as nanofillers for the production of high-performance polymer composites.</p
AMČR - archeologický záznam C-9108776A
No full textStav: 3Lokalizace/okolnosti: ZJZ od obce, pod vrchem Hradiště (kóta 542 m n. m.). Podnět. stavba vodovodu Vítkov-Blatná.Souhrn/upřesnění: Ve starší literatuře vedeno jako Škvořetice.
Na lokalitě kopal baron A. Koller v l. 1883 a 1887. Původně 100 až 500 plochých žárových hrobů. Starší nálezy ztraceny, měly být uloženy v zámku ve Škvořeticích
Exercises in astronomy.
No full textThis book is an updated and considerably extended version of Minnaert's work published in 1969 (01.003.051).Many new exercises referring to new observational techniques and methods have been incorporated by the editor in collaboration with the contributing authors D. A. Allen, Z. Ceplechka, S. Ferraz Mello, K. J. Gordon, L. Houziaux, C. Jaschek, Z. Kopal, J. Manfroid, J. Palouš, J. Podolský, G. R. Quast, J. Surdej, A. B. Underhill, J. M. Vreux, D. G. Wentzel.The exercises are organized in the following sections:A. The planetary system: 1. Space and time, instruments. 2. The motions of celestial bodies. 3. Planets and satellites.B. The stars: 1. The Sun. 2. Stars and nebulae. 3. Stellar systems
The construction of a scratch roller and a safety device
No full textkatedra: KTS; přílohy: 1 CD, 6 výkresů; rozsah: 41This bachelor thesis deals with the modifying machine, which is used to create the flock on the surface of felt hats. The goal is to replace existing surface of the scratch cylinder which is made of shark leather with suitable, cheap and reliable surface. The optimal security features should be constructed for this surface, because the cylinder rotates with speed of approximately 30 m/s in the immediate contact of the machine operator, who manually approaches the hat to the cillinder. The first part of this work is focused on the possibilities of replacing scratch surface, comparison of the various surfaces and the choice of the best one. The second part deals with safety features for the selected scratch surface, stress analysis of the critical parts and the creation of manufacturing documentation.Tato bakalářská práce se zabývá úpravou stroje, který se používá k vytvoření tzv. velurové úpravy na povrchu plstěných klobouků. Cílem je nahrazení stávajícího povrchu dřecího válce, který je ze žraločí kůže jiným, vhodným, levným a spolehlivým povrchem. Pro takto zvolený povrch je třeba navrhnout optimální bezpečnostní prvky, jelikož se dřecí válec otáčí obvodovou rychlostí přibližně 30 m/s a je v bezprostřední blízkosti obsluhy stroje, která k němu ručně přitlačuje upravovaný klobouk. První část této práce je zaměřena na možnosti náhrady dřecího povrchu, porovnání jednotlivých povrchů a volbu nejvhodnějšího z nich. Druhá část se zabývá návrhem bezpečnostních prvků pro zvolený dřecí povrch, kontrolními výpočty rozhodujících částí a vytvořením výrobní dokumentace
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