32 research outputs found
Synthesis, characterization and biological studies of radiolabelled metal complexes
No full textIncludes abstract.Includes bibliographical references.A series of monothiosemicarbazone (and dithiosemicarbazone) ligands have been synthesized via a Schiff base condensation reaction. These ligands contain various aromatic groups and were isolated as solids in moderate to good yields. The ligands were characterized using various spectroscopic and analytical techniques..
Komparative Genomische Hybridisierung als Instrument zur Prognoseabschätzung bei malignen Mesotheliomen?
No full textRecognizing non-native spoken words in background noise increases interference from the native language
No full textListeners frequently recognize spoken words in the presence of background noise. Previous research has shown that noise reduces phoneme intelligibility and hampers spoken-word recognition—especially for non-native listeners. In the present study, we investigated how noise influences lexical competition in both the non-native and the native language, reflecting the degree to which both languages are co-activated. We recorded the eye movements of native Dutch participants as they listened to English sentences containing a target word while looking at displays containing four objects. On target-present trials, the visual referent depicting the target word was present, along with three unrelated distractors. On target-absent trials, the target object (e.g., wizard) was absent. Instead, the display contained an English competitor, overlapping with the English target in phonological onset (e.g., window), a Dutch competitor, overlapping with the English target in phonological onset (e.g., wimpel, pennant), and two unrelated distractors. Half of the sentences was masked by speech-shaped noise; the other half was presented in quiet. Compared to speech in quiet, noise delayed fixations to the target objects on target-present trials. For target-absent trials, we observed that the likelihood for fixation biases towards the English and Dutch onset competitors (over the unrelated distractors) was larger in noise than in quiet. Our data thus show that the presence of background noise increases lexical competition in the task-relevant non-native (English) and in the task-irrelevant native (Dutch) language. The latter reflects stronger interference of one’s native language during non-native spoken-word recognition under adverse conditions
Urinary iodine concentrations of pregnant women before delivery
No full textCíl: Srovnání jodurie těhotných žen před porodem s doporučenými hodnotami, referovanou substitucí a jodovým stavem jejich novorozenců. Metody: V letech 2008–2013 byly vyšetřeny jodurie 66 těhotných před porodem a 56 novorozenců 3. den po porodu. Výsledky byly srovnány s doporučenou normou, jodurie těhotných s hodnotami novorozenců, proběhla analýza nálezů ve vztahu k referované dávce jodu a analýza kolísání jodurie v průběhu dne. Výsledky: Suplementaci před porodem neužívalo 32 % těhotných. Z těhotných, které přípravky s jodem užívaly, mělo 38 % optimální dávku jodu 150 μg/den. Rozdíly v jodurii těhotných v závislosti na referované dávce jodu jsme neprokázali. Novorozenci těhotných se suplementací měli medián jodurie 3. den života nad 100 μg/l. V souboru se neprokázala období dne, kdy by těhotné měly významně vyšší nebo naopak nižší jodurie. Závěry: Suplementace jodem v těhotenství zlepšuje jodový stav novorozencůObjective: To compare urinary iodine concentrations (UIC) in pregnant women before delivery with the recommended UIC values, reported iodine supplementation during pregnancy, iodine status of their newborns and UIC diurnal fluctuations in pregnant women in the study. Methods: In the years 2008-2013, UIC in 66 pregnant women before delivery and UIC in 56 newborns on the 3rd day of life were examined. The results were compared with the recommended UIC values and their relation to the reported iodine supplementation was analyzed. Results: Thirty-two percent of pregnant women did not use any iodine supplementation during pregnancy. The optimum daily dose of 150 μg- was taken by thirty-eight percent of the pregnant women out of those who reported any form of iodine supplementation. The difference in UIC level results of pregnant women before delivery in relation to iodine supplementation was not statistically significant in our sample. In the group of women with iodine supplementation, newborns had median UIC levels above 100 μg-/l on the third day of life. There was no evidence of the effect of iodine supplementation on the fluctuations of maternal UIC levels during the day. Conclusion: Iodine supplemetation in pregnancy improves the iodine status of newborn
Prospektive Studie zur Evaluation der perioperativen Angst und des perioperativen Speichelkortisollevels bei Melanompatienten mit Schildwächterlymphknotenexstirpationen in Tumeszenz- vs Vollnarkose
No full textHow positive and negative expectations shape the experience of visceral pain: an experimental pilot study in healthy women
No full textCombinatorics on Words and Applications
No full textThis habilitation thesis combines two fields of mathematics – the main one is Combinatorics on
Words and combinatorial results are applied in Random Number Generation. It is written in
the form of a collection of papers – all of them besides the last one have been already published
in scientific journals, the last one has been submitted. The collection is accompanied with a text
presenting in a nutshell and at the same time in a way comprehensive also for non-specialists
the content of the papers. The following six papers have been chosen
1. Sturmian Jungle (or Garden?) on Multiliteral Alphabets [8];
2. Infinite Words with Finite Defect [9];
3. On the Brlek–Reutenauer Conjecture [10];
4. Proof of the Brlek–Reutenauer Conjecture [11];
5. Infinite Words with Well Distributed Occurrences [5];
6. Pseudorandom Number Generators Based on Infinite Words [6]
in order to draw a picture that is self-consistent and illustrates very well the steps done by
the author in the last five years in her research. The first paper is purely combinatorial, it is
devoted to the study of a famous class of infinite words – Sturmian words – and in particular
to their generalization to multiliteral alphabets. Combinatorics on Words is treated here from
many perspectives and the topic of richness in palindromes is opened already in this study. The
following three papers study palindromes in infinite words, in particular, they deal with richness
and defect of infinite words. Recently, this subject has been very popular in Combinatorics on
Words and several research groups have contributed to its deeper exploration. One of our main
contribution is the proof of a conjecture stated by Brlek and Reutenauer. In the papers 2., 3.,
and 4. our thorny, but successful path to its complete proof is described. The last two papers
contain applications of Combinatorics on Words in Random Number Generation. We study
there a new property of infinite words – baptized well distributed occurrences – that was born
in connection with random number generation. It is a sufficient condition for absence of the
lattice structure when pseudorandom number generators are mixed according to an infinite word.
We succeeded to prove aperiodicity and absence of the lattice structure for arising generators,
however, their statistical testing shows – to our pleasure – that such generators are almost as fast
as the original generators and their other statistical properties resemble much more to a random
sequence in comparison to the original generators. This means that such generators are suitable
for use in practice.
Results of all above six papers were presented by the habilitation candidate in the form of
lectures at international conferences: Combinatorial generalizations of Sturmian words from the
first paper were introduced at NORCOM 2010 (the 10th Nordic Combinatorial Conference) in Reykjav´ık, Island, in May 2010, and at Joint Mathematical Conference CSASC 2010, session
Discrete Dynamical Systems, in Prague, in January 2010. The results on richness, defect, and the
Brlek–Reutenauer conjecture (items 2., 3., 4. of the above list) were presented at Cesko-slovensk´a ˇ
MELA (Meeting on Languages) in Telˇc as an invited lecture in September 2012, at RuFiDim
(Russian Finnish Symposium on Discrete Mathematics) in Turku, Finland, in September 2012,
and at Workshop on Challenges in Combinatorics on Words in Toronto, Canada, in April 2013.
The talks on pseudorandom number generators based on infinite words with well distributed
occurrences were given at WORDS 2013 in Turku, Finland, in September 2013, and at Cesko- ˇ
slovensk´a MELA in Telˇc in September 2013. Moreover, a lecture on application of Combinatorics
on Words in Random Number Generation was held in April 2014 within a research stay at the
University of Oulu, Finland. Last but not least, in 2013 the candidate was laureate of the award
L’Or´eal UNESCO For Women in Science for the project Application of Combinatorics on Words
in Cryptology that was closely related to the results summarized in the last two papers
Production of activated carbons from Quercus cerris acorn shell under various experiment conditions, and their characterizations
No full textDue to the high porosities, large surface areas, insolubilities in solutions, and unique structural and morphological structures, porous materials are utilized in various application areas such as energy conversion and storage, wastewater treatment, adsorption, catalysis and photocatalysis. In this study, activated carbons (QCACs), one type of porous materials, were synthesized from Quercus cerris acorn shells by using ZnCl(2 )chemical activation under various production conditions. The effects of carbonization temperature, carbonization period, and impregnation ratios on the yields, surface areas, pore developments, and N2 adsorption-desorption isotherms of activated carbons obtained were investigated in detail. The highest surface area (1751.61 m(2)/g) was reached when utilized at the impregnation ratio of 2.0 at 500 degree celsius for 90 min. The total pore volume of QCAC increased with increasing impregnation ratio, however the micropore volume of QCAC reduced. It was found from the pore distribution data that QCACs contained mostly narrow mesopores and a little amount of micropores. Also, N(2 )adsorption-desorption isotherm data revealed that QCACs produced under different conditions were usually mesopore structures, and the pores were narrow slit-shaped. Moreover, the data provided from SEM, FTIR, Boehm titration, and elemental analysis gave more characterization information about QCACs synthesized.Ministry of Education, Science and Technology of Kosovo [2-2541-1]We would like to thank the Ministry of Education, Science and Technology of Kosovo for financially supporting our project under the project number of 2-2541-1 in 2023; whose project title is Largimi i ndotesve nga sinteza e karbonit te aktivizuar nga biomaterialet e mbeturinave bujqesore dhe procesi i absorbimit nga ujerat e zeza
