Boston University Percussion Ensemble, Monday, December 7, 1998

This is the concert program of the Boston University Percussion Ensemble performance on Monday, December 7, 1998 at 8:00 p.m., at the Boston University Concert Hall, 855 Commonwealth Avenue, Boston, Massachusetts. Works performed were Portico by Tom Gauger, Last Verses II by Michael Carreira, Pulse by Henry Cowell, Uneven Souls by Nebojsa Zivkoviv, Eine kleine Tischmusik by Manfred Menke, and Bonham by Christopher Rouse. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund

Flavonoidi iz cvetova Cephalaria pastricensis i njihova antiradikalska aktivnost

Two flavonoid glycosides 1 and 2 having the luteolin structure were isolated from flowers of the endemic plant species Cephalaria pastricensis. They were identified by (1)H and (13)C NMR, as well as UV/Vis spectroscopy. The structures of 1 and 2 were also confirmed by the spectral data of aglycones and TLC of the sugars obtained after acid hydrolysis. Flavones 1 and 2 showed significant antiradical activity in the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay.Iz cvetova Cephalaria pastricensis izolovana su dva heterozidna flavonoida sa luteolinskim aglikonom (1 i 2). Wihova struktura je određena primenom 1H i 13C-NMR i UV spektroskopije. Strukture flavona 1 i 2 su potvrđene i spektrima aglikona, odnosno tankoslojnom hromatografijom oslobođenih šećera nakon kisele hidrolize. Jedinjenja 1 i 2 su pokazala značajnu antiradikalsku aktivnost u 1,1-difenil-2 pikrilhidrazil (DPPH) testu

STM analiza površine srebrnog ogledala

In this work, the structure of a silver mirror surface was examined by the STM technique. It was shown that the structural characteristics which enable a high degree of mirror reflection from this surface, which is very close to the ideal reflectivity of silver, are: flat and mutually parallel parts of the surface which are smooth on the atomic level, and distances between adjacent flat parts which state several atomic diameters.STM tehnikom je ispitana struktura površine srebrnog ogledala. Pokazano je da su strukturne karakteristike koje su omogućile visok stepen ogledalske refleksije koji je bio veoma blizak idealnoj refleksivnosti srebra: ravni i međusobno paralelni delovi površine koji su glatki na atomskom nivou, i rastojanja između susednih ravnih delova koja iznose nekoliko atomskih prečnika

Nationalism and the rhetoric of exclusion

The late twentieth-century Serbian nationalist discourse is seen as a manifestation of the same rhetoric which was initially formulated in the period of national awakening associated with the two uprisings against the Turkish rule under Karađorđe Petrović (1804-13) and Miloš Obrenović (1815-17) and the institution of the autonomous Serbian principality after the Russo-Turkish War (1828). The methodological tool used in this paper to analyze the Serbian nationalist discourse in the late 20th century is a set of binary oppositions underlying the formation of Serbian national identity, which was skillfully manipulated by the former leader Slobodan Milošević

Influence of gaseous laser in continuous-wave and pulse regimes on biomaterial characteristics

Aromatic plants and laser beam wavelength in the red range of visible spectra (623.8 nm), most commonly used for treating plant species, were selected. As there is not much information in the references, it is necessary to set a scale with qualitative and partially quantitative evaluations of the results. Specimens of thyme seed (Thymus vulgaris) were selected as aromatic plants for studying the effect of low-power lasers on plant development, and continuous He-Ne laser, with irradiation times in the range of minutes

Mutual stereotypes of Croats, Bosnjaks and Serbs in the light of two factors theory of prejudice

Kako nizom empirijskih provera nije dobijena očekivana korelacija između negativnih stereotipa i predrasuda, savremeni istraživači su pretpostavili da stereotipe ne treba posmatrati kao jednodimenzionalni konstrukt. Predložena je dvofaktorska teorija stereotipa gde je prva dimenzija kompetencije (superioran-inferioran), a druga dobrote i moralnosti (dobar-loš). Samo ova potonja korelira sa predrasudama. Naše istraživanje obavljeno na 617 ispitanika iz Srbije, Hrvatske i Bosne i Hercegovine pokazuje da su negativni međusobni stereotipi ova tri naroda još dominantni a ta negativnost se odražava pre svega na drugoj dimenziji, kao što i predviđa pomenuta teorija.Since a number of empirical research have not shown expected correlation between negative stereotypes and prejudices, modern researchers have proposed that stereotypes should not be treated as unidimensional construct. The two factors theory of stereotypes has been proposed. First dimension is competence (superior-inferior), and second is beneficence or morality (good-bad). Only second one has high correlation with prejudices. Our research, conducted on 617 subjects from Serbia, Croatia and Bosnia and Hercegovina, shows that mutual negative stereotypes among these three nations are still dominant, and that negativity has mainly been found on the second dimension, just as mentioned theory proposed

14 C-urea breath test in the detection of Helicobacter pylori infection

Helicobacter pylori infection is supposed to be one of the major causes of digestive and other diseases. Among a lot of invasive and non-invasive methods for its detection, none is ideal. The aim is an assessment of the Helicobacter pylori infection in the stomach using breath test and comparison to other diagnostic methods, as well as following up the effects of therapy. In 17 patients with digestive discomfort, breath test, rapid ure- ase test and histology were performed, while in 47 patients with proven HP infection the effect of therapy was followed up using breath test and clinical findings. Breath test was performed af- ter per oral administration of the capsule of 14 C urea (37 kBq). Findings of the breath and urease tests were in accordance in 14/ /17 patients (83%) while breath test and histology in 16/17 patients (94%). During follow-up of the therapeutic effects, breath test and clinical findings were in accordance in 43/47 patients (98%). Breath test can be useful in diagnosis but is a method of choice in following up the patients after therapy for H. pylori infection, because it is non-invasive, fast and precise