1,745 research outputs found

    Type And Material of Fixed Prosthodontic Appliances in Patients Living in the Region of Metković

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    The aim of this study was to evaluate the type and the aesthetic material in relation to age, gender, level of education, employment, socio-economic status and frequency of visits to the dentist. The examination was performed on 212 patients who had a fixed prosthodontic appliance for more than a year (55% males and 45% females, age 18-80 yrs.). The following conclusions were made: 1. The older patients and retired patients had significantly more bridges than crowns (p0.05). Patients who visit their dentist regularly have significantly more crowns than bridges than patients who visit their dentist irregularly or when in pain (p0.05). 2. Almost all fixed prosthodontic appliances older than 10 years were made of porcelain (98%), while acrylic veneer crowns were more frequent in appliances older than 10 or 15 years (p0.05). Patients older than 60 years had more acrylic material compared to younger patients. While patients younger than 39 years had almost exclusively ceramic appliances (p<0.01). Less educated patients had more acrylic veneer appliances. Employed patients had significantly more ceramic appliances than retired patients

    Type And Material of Fixed Prosthodontic Appliances in Patients Living in the Region of Metković

    Get PDF
    The aim of this study was to evaluate the type and the aesthetic material in relation to age, gender, level of education, employment, socio-economic status and frequency of visits to the dentist. The examination was performed on 212 patients who had a fixed prosthodontic appliance for more than a year (55% males and 45% females, age 18-80 yrs.). The following conclusions were made: 1. The older patients and retired patients had significantly more bridges than crowns (p0.05). Patients who visit their dentist regularly have significantly more crowns than bridges than patients who visit their dentist irregularly or when in pain (p0.05). 2. Almost all fixed prosthodontic appliances older than 10 years were made of porcelain (98%), while acrylic veneer crowns were more frequent in appliances older than 10 or 15 years (p0.05). Patients older than 60 years had more acrylic material compared to younger patients. While patients younger than 39 years had almost exclusively ceramic appliances (p<0.01). Less educated patients had more acrylic veneer appliances. Employed patients had significantly more ceramic appliances than retired patients

    Англійська мова для біологів

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    Навчальний посібник укладений відповідно до вимог програми рівневого вивчення іноземної мови в університеті і призначений для студентів 1-3 курсів біологічного факультету, які вивчають мову у групах середнього та вищого рівнів. Мета посібника - поглиблення теоретичних і практичних знань студентів з англійської мови, формування та розвиток умінь і навичок сприймати і відтворювати іншомовний науковий фаховий дискурс, розширення словникового запасу загально-наукової та професійної лексики. Посібник містить сучасний автентичний текстовий матеріал, який охоплює базову лексику основних галузей біологічної науки. Практичні завдання укладено з урахуванням новітніх методичних стратегій викладання іноземної мови професійного спрямування. Посібник може бути корисним для магістрантів, аспірантів та науковців-біологів, які самостійно удосконалюють свої знання з англійської мови.CONTENTS : Передмова 5; UNIT 1 7; Lesson 1. Biology – the Science of Life 7; Lesson 2. Life 15; Lesson 3. The Origin of Life 23; Unit 1 Focus Words and Phrases 31; Revision and Additional Practice 1 32; UNIT 2 42; Lesson 1. Macromolecules 42; Lesson 2. Cell as a Basic Unit of Life 53; Lesson 3. Cell Structure 64; Lesson 4. Cell Division 74; Unit 2 Focus Words and Phrases 84; Revision and Additional Practice 2 85; UNIT 3 96; Lesson 1. The Protista 96; Lesson 2. The Bacteria 109; Lesson 3. Viruses 119; Unit 3 Focus Words and Phrases 131; Revision and Additional Practice 3 132; UNIT 4 143 ; Lesson 1. Vascular Plants 143 ; Lesson 2. Development of Gametophytes in Angiosperms 153 ; Lesson 3. Animals 165; Lesson 4. Phylum Chordata 175; Unit 4 Focus Words and Phrases 186; Revision and Additional Practice 4 188; UNIT 5 199; Lesson 1. Anthropogenesis 199; Lesson 2. Evolution 212; Lesson 3. Genetics 225; Lesson 4. Ecology 236; Unit 5 Focus Words and Phrases 248; Revision and Additional Practice 5 250; List of Biology Terms and Biology Related Words 261; References 277; List of Sources 278; Appendix 279; Tapescripts 280

    Energy Distribution of a Stationary Beam of Light

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    Aguirregabiria et al showed that Einstein, Landau and Lifshitz, Papapetrou, and Weinberg energy-momentum complexes coincide for all Kerr-Schild metric. Bringely used their general expression of the Kerr-Schild class and found energy and momentum densities for the Bonnor metric. We obtain these results without using Aguirregabiria et al results and verify that Bringley's results are correct. This also supports Aguirregabiria et al results as well as Cooperstock hypothesis. Further, we obtain the energy distribution of the space-time under consideration.Comment: Latex, no figures [Admin note: substantial overlap with gr-qc/9910015 and hep-th/0308070

    Analysis of Occlusal Contacts in Different Types of Prosthodontic Appliances, Eichner Classifications, Presence RCP-ICP Slide and the Type of Occlusion

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    The aim of the study was to determine the number and the type of the occlusal contacts (strong, weak) with respect to the type of the prosthodontic appliance (fixed, removable, combined fixed-removable) and with respect to the Eichner classification in patients with their appliances being in a good function for a long time. The aim of the study was also to determine the number and the type of the occlusal contacts (strong, weak) with respect to the type of occlusion (canine guided, group function or balanced) and the presence of the RCP-ICP slide. A total of 440 patients with different types of prosthodontic appliances were examined for the antagonistic occlusal contacts using occlusal strips of 11 m and 50 m. The average number of occlusal contacts was 10.5 for the upper and 10.46 for the lower posterior teeth, approximately 5 on each side of the tooth arch. The results of the study suggest that the biggest number of occlusal contacts were recorded for the small span fixed appliances (2 on average), the greater span fixed and fixed-removable prosthodontic appliances exhibited 1.6 occlusal contacts, and the removable complete denture exhibited 1.2 contact per the tooth in the posterior region. The number of the hard occlusal contacts was significantly greater in fixed and fixedremovable prosthodontic appliances in comparison with the complete dentures (p < 0.05), while there was no significant difference between the prosthodontic appliances for the weak occlusal contacts (p > 0.05). The overall number of the occlusal contacts, as well as the number of the hard occlusal contacts was significantly greater in the Eichner class I cases (p < 0.05) in comparison with the Eichner classes II and III. The number of the weak occlusal contacts showed no significant differences with respect to the Eichner classification (p > 0.05). There was no significant difference in the number of occlusal contacts between the appliances with RCP-ICP slide and where ICP and RCP corresponded (p > 0.05)

    Research into properties of blue melilot and fenugreek cultivated using different sowing times

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    Received: September 6th, 2021 ; Accepted: January 30th, 2022 ; Published: February 17th, 2022 ; Correspondence: [email protected] paper presents the results of the research into the properties of blue melilot (Melilotus caeruleus (L.) Desr.) and fenugreek (Trigonella foenum graecum L.) with regard to the set of their economy-and-biology and biochemical indices in relation to the dates of their sowing. It has been established that the two species under consideration feature wide ranges of index variability depending on the sowing term and the weather conditions. The earliest ripening terms have been recorded for species in case of summer sowing dates (decade I of June), when short growing season lengths of 36–37 days were observed. At the same time, in terms of heavy plant herbage yield obtained from species in the green conveyor system, the early spring (decades II–III of April) and late spring (decade I of May) sowing terms are more suitable providing a herbage yield of 5.7–6.9 t ha–1 in case of blue melilot and 7.3–9.3 t ha–1 for fenugreek, with a solids content of 12.4–28.4%, total sugars of 2.5–5.0% and vitamin C - 38.0–51.8 mg (100 g)-1 . For the purpose of obtaining the spice named ‘Greek hay’ (foenum Graecum), a better choice is to cultivate fenugreek with early spring (decades II–III of April) and late spring (decade I of May) sowing times, as in this case a greater vegetation mass develops, resulting in a plant dry weight yield of 1.3–1.4 t ha–1. An increase in the total precipitation by 1 mm has contributed to the variation of the herbage yield within the range of 15.0 to 77.3 kg ha–1, dry matter yield - 0.693 to 25.9 kg ha–1. High seed yield has been noted in case of sowing the species in early spring (decades II–III of April), where the seed yield of blue melilot was equal to 0.4 t ha-1, fenugreek - 2.0 t ha-1 , their 1,000 seeds having a weight of 0.71 and 9.7 g, respectively

    Consequences of a covariant Description of Heavy Ion Reactions at intermediate Energies

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    Heavy ion collisions at intermediate energies are studied by using a new RQMD code, which is a covariant generalization of the QMD approach. We show that this new implementation is able to produce the same results in the nonrelativistic limit (i.e. 50MeV/nucl.) as the non-covariant QMD. Such a comparison is not available in the literature. At higher energies (i.e. 1.5 GeV/nucl. and 2 GeV/nucl.) RQMD and QMD give different results in respect to the time evolution of the phase space, for example for the directed transverse flow. These differences show that consequences of a covariant description of heavy ion reactions within the framework of RQMD are existing even at intermediate energies.Comment: LaTex-file, 28 pages, 8 figures (available upon request), accepted for publication in Physical Review

    Positron annihilation study of the juniperus communis based biomaterial NEFROVIL

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    © Springer Science+Business Media Dordrecht 2015. The results of positron annihilation lifetime (PAL) measurements of the Juniperus communis based biomaterial NEFROVIL are reported for the first time. Three- and four-component fittings were applied to deconvolute the PAL spectrum. In order to determine which fitting procedure is most suited, a maximum entropy lifetime (MELT) analysis was also performed. It was found that the nanovoid topology of this biomaterial is constructed by small and large free-volume holes identified by the ortho-positronium lifetime parameters in the most suitable fourcomponent fitting procedure

    Remarks on Conserved Quantities and Entropy of BTZ Black Hole Solutions. Part I: the General Setting

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    The BTZ stationary black hole solution is considered and its mass and angular momentum are calculated by means of Noether theorem. In particular, relative conserved quantities with respect to a suitably fixed background are discussed. Entropy is then computed in a geometric and macroscopic framework, so that it satisfies the first principle of thermodynamics. In order to compare this more general framework to the prescription by Wald et al. we construct the maximal extension of the BTZ horizon by means of Kruskal-like coordinates. A discussion about the different features of the two methods for computing entropy is finally developed.Comment: PlainTEX, 16 pages. Revised version 1.
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