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182. A comparison of different rubber dam systems on a dental simulator
- Creator:
- Kapitán, Martin, Šustová, Zdeňka, Koberová Ivančaková, Romana, and Suchánek, Jakub
- Format:
- print, text, and regular print
- Type:
- model:article, article, Text, srovnávací studie, časopisecké články, práce podpořená grantem, and TEXT
- Subject:
- design vybavení, lidé, testování materiálů, biologické modely, and gumové blány
- Language:
- English
- Description:
- The purpose of this study was to test the hypothesis that more recently developed rubber dam systems (OptraDam ® Plus and OptiDam™) are faster and easier to handle, and that the quality of isolation is not decreased. The rubber dam systems were applied in standard conditions on a dental simulator in several model clinical situations. The time of preparation, application and removal were measured and the quality of isolation was evaluated. The median time of rubber dam placement was 51 s (Q1 = 38 s; Q3 = 79 s). The shortest median time of application was with OptiDam™ (42 s), followed by a conventional rubber dam (53 s), and finally the longest was with OptraDam® Plus (58 s). The median volume of fluid remaining in the isolated space after 5 minutes was 9.5 mL (Q1 = 8 mL; Q3 = 10 mL). The largest median volume of remaining water was with OptiDam™ (10 mL), followed by a conventional rubber dam (9.5 mL) and the least with OptraDam® Plus (8.5 mL). The afore-stated hypothesis about the advantages of modern rubber dam isolation systems was accepted for OptiDam™, but rejected for OptraDam® Plus. The results could contribute to decision-making concerning the choice of rubber dam system. and Martin Kapitán, Zdeňka Šustová, Romana Ivančaková, Jakub Suchánek
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
183. A comparison of three rubber dam systems in vivo - a preliminary study
- Creator:
- Kapitán, Martin, Suchánková Kleplová, Tereza, and Suchánek, Jakub
- Format:
- print, text, and regular print
- Type:
- model:article, article, Text, srovnávací studie, časopisecké články, práce podpořená grantem, and TEXT
- Subject:
- mladiství, dospělí, staří, design vybavení, ženské pohlaví, lidé, mužské pohlaví, lidé středního věku, gumové blány, and mladý dospělý
- Language:
- English
- Description:
- The aim of this study was to compare the isolation systems OptraDam® Plus and OptiDam™ with the conventional rubber dam in terms of objective and subjective parameters. The isolation systems were applied during the dental treatment of the patients. The time of preparation, placement, presence and removal were measured and the quality of isolation was evaluated. The median time of rubber dam placement was 76 s (Q1=62 s; Q3=111.25 s). The application time of OptraDam® Plus was significantly longer compared to the other systems (P ® plus. The results presented in this study could guide clinicians for choosing the most appropriate isolation system. and M. Kapitán, T. Suchánková Kleplová, J. Suchánek
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
184. A curvature identity on a 6-dimensional Riemannian manifold and its applications
- Creator:
- Euh, Yunhee, Park, Jeong Hyeong, and Sekigawa, Kouei
- Format:
- print, bez média, and svazek
- Type:
- model:article and TEXT
- Subject:
- matematika, mathematics, Chern-Gauss-Bonnet theorem, curvature identity, locally harmonic manifold, 13, and 51
- Language:
- English
- Description:
- We derive a curvature identity that holds on any 6-dimensional Riemannian manifold, from the Chern-Gauss-Bonnet theorem for a 6-dimensional closed Riemannian manifold. Moreover, some applications of the curvature identity are given. We also define a generalization of harmonic manifolds to study the Lichnerowicz conjecture for a harmonic manifold "a harmonic manifold is locally symmetric" and provide another proof of the Lichnerowicz conjecture refined by Ledger for the 4-dimensional case under a slightly more general setting., Yunhee Euh, Jeong Hyeong Park, Kouei Sekigawa., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
185. A Fiedler-like theory for the perturbed Laplacian
- Creator:
- Rocha, Israel and Trevisan, Vilmar
- Format:
- print, bez média, and svazek
- Type:
- model:article and TEXT
- Subject:
- matematika, mathematics, perturbed Laplacian matrix, Fiedler vector, algebraic connectivity, graph partitioning, 13, and 51
- Language:
- English
- Description:
- The perturbed Laplacian matrix of a graph G is defined as DL = D−A, where D is any diagonal matrix and A is a weighted adjacency matrix of G. We develop a Fiedler-like theory for this matrix, leading to results that are of the same type as those obtained with the algebraic connectivity of a graph. We show a monotonicity theorem for the harmonic eigenfunction corresponding to the second smallest eigenvalue of the perturbed Laplacian matrix over the points of articulation of a graph. Furthermore, we use the notion of Perron component for the perturbed Laplacian matrix of a graph and show how its second smallest eigenvalue can be characterized using this definition., Israel Rocha, Vilmar Trevisan., and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
186. A history of Bohemian literature
- Creator:
- František Lützow
- Publisher:
- William Heinemann
- Format:
- print, svazek, and vii, 425 stran.
- Type:
- model:monograph and TEXT
- Subject:
- Česká literatura (o ní), Tisky (19. století), dějiny české literatury, 821.162.3(091), (048.8), 11, 12, 821.162.3.09, and 094.5
- Language:
- English
- Description:
- by Francis, count Lützow. and KČSN (sg. S-C)
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
187. A key to genera of South American Deltocephalini (Hemiptera: Cicadellidae: Deltocephalinae) with descriptions of new taxa and nomenclatural changes
- Creator:
- Duan, Yani and Dietrich, Christopher H
- Format:
- print, počítač, and online zdroj
- Type:
- model:article and TEXT
- Subject:
- křísi, křískovití, morfologie (biologie), Auchenorrhyncha, Cicadellidae, morphology (biology), Afrika jižní, Africa, Southern, Deltocephalini, taxonomy, key to genera, new taxa, 2, and 59
- Language:
- English
- Description:
- A key to genera of South American Deltocephalini Dallas, 1870 based on adult males is presented. Two new genera, each based on a single new species from Argentina are described and illustrated: Corrientesia gen. n. based on type species C. ochrescens sp. n. and Salnogia gen. n. based on type species S. fletcheri sp. n. A new species of Graminella DeLong, 1936, G. schrocki sp. n. from Argentina is also described and illustrated. Graminella stelliger (Berg, 1884) equals Fusanus acristylus Cheng, 1980, syn. n. A new combination, Limpica pallida (Linnavuori & DeLong, 1979) comb. n., transferred from Reventazonia Linnavuori, 1959, is also proposed. Quaziptus Kramer, 1965, is returned from Paralimnini Distant, 1908 to Deltocephalini Dallas, 1870., Yani Duan, Christopher H. Dietrich., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
188. A little known Utraquist gradual in the British Library in London
- Creator:
- Martina Šárovcová
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Filozofie, British Library, graduály, utrakvisté, utrakvistická liturgie, dějiny umění, graduals (liturgical books), Utraquist liturgy, Utraquism, history of art, Londýn (Anglie), London (England), 5, and 101
- Language:
- Czech
- Description:
- Martina Šárovcová. and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
189. A Mediterranean population of Pyrrhocoris apterus (Heteroptera: Pyrrhocoridae) exhibits wing morph-related differences in adipokinetic response
- Creator:
- Kodrík, Dalibor and Socha, Radomír
- Format:
- print, text, and regular print
- Type:
- article, bibliography, model:article, and TEXT
- Subject:
- zoologie, entomologie, hmyz, ploštice, Pyrrhocoridae, Pyrrhocoris apterus, křídla, dimorfismus křídel, neurohormony, adipokinetické hormony, funkce, 595.2/.7, and 591.1
- Language:
- English
- Description:
- Short-winged (brachypterous) and long-winged (macropterous) adult females of Pyrrhocoris apterus (L.) originating from a Mediterranean population (Israel) were analyzed for their adipokinetic responses. The adipokinetic response, expressed as an increase of haemolymph lipids after injection of adipokinetic hormone from Locusta migratoria (Lom-AKH-I), was assessed in relation to age and dose of the hormone. We demonstrate in this study that the adipokinetic responses induced by bug's corpora cardiaca extract and Lom-AKH-I were dose-dependent for both brachypterous and macropterous females. Significant differences between the morphs were recorded for doses >= 0.25 corpora cardiaca equivalent (P < 0.01) and doses >= 0.25 pmol Lom-AKH-I (P < 0.05). The haemolymph lipid elevations induced in both morphs by 2 pmols Lom-AKH-I are comparable with that induced by crude extract of one pair of the bug's own corpora cardiaca. The age-dependent test showed much higher adipokinetic responses (P < 0.01) in macropterous females (>= 5 days old) than in the brachypterous females of the same age, when treated with 2 pmols Lom-AKH-I. Starting from day 7, the concentration of haemolymph lipids was also considerably higher (2.5-5 times) in macropterous females than in the brachypterous ones. The obtained data indicate that difference in mobilization of lipids between brachypterous and macropterous females is a geographically independent feature and represents a true wing morph characteristic of P. apterus., Dalibor Kodrík, Radomír Socha, and Lit
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
190. A Method of forecasting earthquake by optical astronomic time-latitude residuals
- Creator:
- Su, Youjin, Gao, Yuping, and Hu, Hui
- Format:
- print, bez média, and svazek
- Type:
- model:article and TEXT
- Subject:
- geodynamika, geomechanika, geofyzika, geologie, zemětřesení, geodynamics, geomechanics, geophysics, geology, earthquake, optical astronomic time-latitude residuals, change of the plumb line, motion of the groundmass, 7, and 551
- Language:
- English
- Description:
- This article reports a method for forecasting an earthquake by synchronous anomalies of optical astronomic time-latitude residuals. The so-called optical astronomic time-latitude residuals for a certain astrometric instrument are the rest after deducting the effects of Earth whole motion from the astronomical time and latitude observations determined by the instrument. Forecasting practice for four earthquakes around the Yunnan Observatory occurring after 2010 shows that it does not generate false forecasts, and also does not miss forecasts of major earthquakes. This forecasting practice proves that the synchronous anomalies of astronomical time-latitude residuals can provide effective warning sign for earthquake occurrence around observatory station, thus deserves attention and further study. and Su Youjin, Gao Yuping, Hu Hui.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public