Ali ustvarjamo svojo preteklost? Raziskovanje gradnje teorij, geoprostorskih statističnih podatkov in rekonstrukcije funkcije utrjenih naselij kulture žarnih grobišč

Urnfield Culture hilltop settlements are often associated with a predominant function in the settlement pattern. This study challenged the idea of centrality by means of density estimates and spatial inhomogeneous explanatory statistics. Reflecting on the differences in spatial trends and material culture, no conclusive evidence for a consolidation of power, economic, or cultic dominance was observed. The dataset strongly points towards the inapplicability of commonly used parametric and/or homogenous spatial algorithms in archaeology. Tracer variables as well as the methodological and theoretical limitations are critically reviewed and a methodological framework to increase the reproducibility and reusability of archaeological research is proposed.Višinska naselja kulture žarnih grobišč pogosto povezujemo z vodilnim položajem v vzorcu poselitve. V pričujoči študiji izpodbijamo idejo o centralnosti z uporabo ocen gostote poselitve in prostorskih nehomogenih pojasnjevalnih statističnih podatkov. Pri opazovanju razlik v prostorskih usmeritvah in materialni kulturi nismo našli nobenega prepričljivega dokaza o utrjevanju moči ter o gospodarski ali kultni prevladi. Podatkovna baza kaže na neuporabnost parametričnih in/ali homogenih prostorskih algoritmov, ki se običajno uporabljajo v arheologiji. Nudimo kritičen razmislek o sledilnih spremenljivkah ter o metodoloških in teoretičnih omejitvah, hkrati pa ponudimo metodološki okvir, s pomočjo katerega lahko povečamo ponovljivost in ponovno uporabnost arheoloških raziskav

Cyclic block filtered multitone modulation

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pH effects on the ohmic properties of bromophenol blue-doped polypyrrole film

The ohmic response of bromophenol blue (BPB) doped polypyrrole (ppy) films obtained by in situ resistance measurements was studied to evaluate the pH effect on their analytical properties. BPB molecules were inserted into the ppy matrix by electrochemical synthesis onto digitized gold electrodes. Ppy-BPB films do not present decrease in the linear ohmic resistance when increasing pH values over the pH range 1.5-11.0, displayed by an increase in resistance after immersion in pH 7.5. The nonlinear behavior is a disadvantage for the application of the ppy-BPB film as pH sensor, however, meaningful information about the interaction between the dopant and the conjugated polymer can be obtained from the system. The ohmic behavior of the ppy-BPB films are explained in terms of the equilibrium between neutral and anionic dye species embedded in the ppy matrix. This work brings important contributions to the development of efficient conducting polymer-based sensors

Impact of Smoking on Development and Progression of Periodontal Disease

Pušenje se smatra rizičnim čimbenikom za nastanak i progresiju parodontne bolesti. Svrha je rada bila odrediti prevalenciju pušenja u uzorku ispitivanih pacijenata koji boluju od parodontitisa, utvrditi utjecaj pušenja na razvoj i progresiju parodontne bolesti i usporediti parodontni status pušača i nepušača. Ispitano je dvjesto pacijenata, pola kojih je bilo pušača a pola nepušača, te su podijeljeni u četiri dobne skupine: do 19, 20-35, 35 65 i 66 i više, i klasificirani prema spolu. Parodontni status vrjednovan je Community Periodontal Indexom (CPI) i Loss of Attachment Indexom (LA), te Klein-Palmerovim (KEP) Indexom. Prema rezultatima CPI-a, nepušači imaju statistički znatno veću prevalenciju zdrava parodonta od skupine pušača, u kojih je zabilježena veća prevalencija plitkih i dubokih parodontnih džepova. Prevalencija parodontnih bolesti u svih ispitanih pacijenata iznosila je 41%. U skupini pušača 60% ispitanika imalo je parodontnu bolest, a 25% ispitanika u skupini nepušača. Prema rezultatima LA indeksa, postoji statistički znatnije veća prevalencija gubitka epitelnoga pričvrstka veća od 3mm u skupini ispitanika - pušača nego u skupini ispitanika nepušača. Prema rezultatima KEP-indeksa, ispitanici pušači imaju statistički znatno više karijesa i ekstrakcija nego nepušači, a u broju liječenih zuba nije bilo statistički znatne razlike. Rezultati pokazuju da broj cigareta konzumiran u danu ne utječe na razvoj parodontne bolesti, no svi ostali rezultati pokazuju da su prevalencija i stupanj parodontne bolesti statistički znatno veći u ispitivanoj skupini pušača nego u ispitivanoj skupini nepušača iste dobi i spola.Smoking is considered to be a risk factor for onset and progression of periodontal disease. The aim was to determine the prevalence of smoking in the sample, subject to examination among the patients that suffer from periodontal diseases, to identify the impact of smoking on development and progression of periodontal disease, and to compare the periodontal status between smokers and non-smokers. Two hundred patients, half of which were smokers an the other half non-smokers, were examined, and divided in four age groups: up to 1, 20-35, 36-65, and 66 and up, and further classified by gender. Periodontal status was evaluated by use of the Community Periodontal Index (CPI), the Loss of Attachment Index (LA), and Klein-Palmer (KEP) Index. Following CPI, the non-smokers were found to have statistically significantly higher prevalence of healthy periodontium that the smokers, in whom a higher prevalence of shallow and deep pockets. Prevalence of periodontal disease in all of the examined patients was 42%. In the group of smokers 60% of examinees were found to have periodontal disease, and 25% of examinees in the group of non smokers. Following LA index, there was statistically significantly higher prevalence of loss of atachment greater than 3 mm in the group of patients who were smokers, than in the group of non-smokers. Following KEP-index, the smokers examined had statistically significantly more caries and extracions than non-smokers,whereas there were no differences in the number of teeth cured. Results showed that the number of cigarttes consumed per day does not affect the development of periodontal disease, but all of the other results showed that the prevalence and severity of periodontal diseases among the examined group of smokers was statistically significantly higher than in the examined group of non-smokers of the same age and sex

Viabilidade econômica do tratamento dos dejetos, em unidades terminadoras de suínos.

bitstream/item/85197/1/Dcot301.pd

Three-dimensional thermal mapping from IRT images for rapid architectural heritage NDT

Thermal infrared imaging is fundamental to architectural heritage non-destructive diagnostics. However, thermal sensors’ low spatial resolution allows capturing only very localized phenomena. At the same time, thermal images are commonly collected with independence of geometry, meaning that no measurements can be performed on them. Occasionally, these issues have been solved with various approaches integrating multi-sensor instrumentation, resulting in high costs and computational times. The presented work aims at tackling these problems by proposing a workflow for cost-effective three-dimensional thermographic modeling using a thermal camera and a consumer-grade RGB camera. The discussed approach exploits the RGB spectrum images captured with the optical sensor of the thermal camera and image-based multi-view stereo techniques to reconstruct architectural features’ geometry. The thermal and optical sensors are calibrated employing custom-made low-cost targets. Subsequently, the necessary geometric transformations between undistorted thermal infrared and optical images are calculated to replace them in the photogrammetric scene and map the models with thermal texture. The method’s metric accuracy is evaluated by conducting comparisons with different sensors and the efficiency by assessing how the results can assist the better interpretation of the present thermal phenomena. The conducted application demonstrates the metric and radiometric performance of the proposed approach and the straightforward implementability for thermographic surveys, as well as its usefulness for cost-effective historical building assessments

Metodologia para o cálculo do custo de produção de frango de corte - versão 1.

Metodologia: aspectos gerais; Fórmulas e exemplo de cálculo; Tabelas de custo.bitstream/CNPSA/15778/1/publicacao_e5z35p2o.pd

Efeitos da calagem na produção e nodulação da Alfafa.

O nitrogênio é o macronutriente mais utilizado pelas plantas sendo constituintes de aminoácidos, proteínas e ácidos nucléicos. Na planta, a fixação biológica do nitrogênio (N) é o processo através do qual o N atmosférico é fixado em amônia pelas bactérias e disponibilizado para as mesmas. Este processo de simbiose ocorre preferencialmente entre plantas leguminosas e bactérias diazotróficas. O objetivo deste trabalho foi observar os efeitos da FBN em cultura de alfafa (Medicago sativa L), planta forrageira pertencente à família das Leguminosae, subfamília Papilonoideae, apresentando alta exigência nutricional e elevado teor nutritivo com 22 a 25% de proteína bruta. Para obter o seu máximo potencial de produção de forragem é necessário que o pH do solo esteja na faixa de 6,5 a 7,0, abaixo disto, sua produtividade é seriamente comprometida