1,498 research outputs found
Urban and Peri-urban Agriculture in Kyiv (Ukraine): "Crisis Induced Strategy" versus Recreational Resource
No full textFor the study 240 Kyiv households with urban and peri-urban agriculture (UPA) have been surveyed in 2005. Quotas were assigned to four different types of plots. A standardized questionnaire was developed to collect data on crop and animal production, inputs, sales of produce for income, importance of the plot for self-sufficiency, recreation and leisure time. A factor analysis is employed to reduce attitudinal data. Based on factor scores a cluster analysis is conducted to segment the respondents into more homogeneous groups and to show multiple purposes of UPA. Four clusters labeled as “Seekers of leisure activities”, “UPA-dependent growers”, “Recreation-oriented growers” and “Little engaged growers” are created. Multiple purposes of UPA are shown by profiling the clusters due to demographic, socioeconomic and other selected characteristics. The results show that depending on the type of plot the importance of UPA shifts from livelihood necessity to recreational resource or combines both.Urban and peri-urban agriculture, livelihood, Ukraine, Farm Management,
Indicadores de risco para a peri-implantite
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Programa de Pós-Graduação em Odontologia, Florianópolis, 2014.O objetivo deste estudo foi identificar os indicadores de risco sistêmicos e locais associados com a peri-implantite e sua prevalência. Os critérios de inclusão para o estudo compreenderam: pacientes tratados com implantes de titânio Implacil De Bortoli (São Paulo, Brasil) na Fundação para o Desenvolvimento Científico e Tecnológico da Odontologia (FUNDECTO), da Universidade de São Paulo (USP), no período de 1998 a 2012. Foram examinados 183 pacientes, reabilitados com 916 implantes em função por pelo menos 1 ano. As variáveis foram avaliadas segundo condição sistêmica do paciente, características do implante, coroa protética e parâmetros clínicos. A regressão logística não demonstrou associação de características do implante com a PI. Houve correlação estatística positiva para histórico de doença periodontal (DP), próteses cimentadas, presença de facetas de desgaste na coroa protética e próteses totais. A PI apresentou risco aumentado em 2.20 vezes para histórico de DP, 3.62 vezes para próteses cimentadas em relação às parafusadas, 2.43 vezes na presença de facetas de desgaste na coroa protética e 16.11 vezes para próteses totais em relação as parafusadas. Foram relacionados como indicadores de risco para a PI histórico de DP, próteses cimentadas, presença de facetas de desgaste na coroa protética e próteses totais. As características dos implantes não foram relacionadas com a PI.Abstract : The aim of this study was to identify systemic and local risk indicators associated with peri-implantitis (PI) and its prevalence. Inclusion criteria for the study were patients treated with osseointegrated implants (Implacil De Bortoli, Sao Paulo, Brazil) at FUNDECTO (University of Sao Paulo, USP), from 1998 to 2012. There were examined 183 patients, rehabilitated with 916 implants in function for 1 year at least. Variables were evaluated according to patient's systemic condition, implant's characteristics, prosthetic crown and clinical parameters. Logistic regression did not show any association between implant's characteristics with PI. Also, it was identified an increased risk of 2.20 times for historic of periodontal disease (PD), 3.62 times for cemented restorations compared to screw-retained, 2.43 times when displayed wear facets on the prosthetic crown and 16.11 times for total rehabilitations when compared to single rehabilitations. There were related as risk indicators for PI the historic of periodontal disease, cemented prostheses, presence of wear facets on the prosthetic crown and in total rehabilitations. Implants' characteristics were not related with PI
Why the peri-urban?
No full textUrban areas are expanding due to a combination of population growth and outward spread of urban activities. The result is that urban and rural areas are no longer seperate territories. The newly emerging 'peri-urban' areas are the site of the most dynamic changes. Peri-urban problems and opportunities are best adressed at the level of the rural-urban region, which includes both peri-urban and rural hinterland areas
A influência da geometria do implante na perda óssea peri-implantar: um estudo de corte transversal em humanos
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Programa de Pós-Graduação em Odontologia, Florianópolis, 2015.Objetivo: O objetivo deste estudo foi verificar a influência da geometria do implante na perda óssea peri-implantar. Materiais e métodos: Pacientes tratados com implantes de titânio Implacil De Bortoli (São Paulo, Brasil) na Fundação para o Desenvolvimento Científico e Tecnológico da Odontologia (FUNDECTO), da Universidade de São Paulo (USP), no período de 1998 a 2012 foram chamados para consulta de manutenção. Entre Abril a Novembro de 2013, foram examinados 183 pacientes reabilitados com 916 implantes em função por pelo menos um ano. A variável perda óssea marginal foi avaliada segundo o fator: tipo de implante (forma cilíndrica ou cônica e conexão hexagonal interna ou externa). Resultados: O teste t para médias de amostras independentes com variâncias desconhecidas mostrou perda óssea significante maior para os implantes cilíndricos quando se considera como ponto de referência coronal para aferir a perda óssea o topo do implante. Mas, quando se utiliza a base do colar liso como ponto de referência coronal para aferição, a situação se inverte e os implantes de forma cônica apresentam perda óssea significativamente maior. Conclusões: Todos os grupos de implantes estudados apresentaram baixos valores de perda óssea peri-implantar. A geometria do implante e o comprimento do colar liso têm significativa influência na perda óssea peri-implantar. Implantes cônicos, com micro espiras cervicais e menor comprimento de colar liso, mostraram menor perda óssea marginal.Abstract : Objective: The aim of this study was to investigate the influence of implant geometry in peri-implant bone loss. Materials and methods: From April to November 2013, there were examined 183 patients treated with osseointegrated implants (Implacil De Bortoli, Sao Paulo, Brazil) performed at FUNDECTO (University of Sao Paulo - USP) from 1998 to 2012, rehabilitated with 916 implants in function for 1 year at least. The variable marginal bone loss was assessed according to the factor type of implant (cylindrical or conical shape and internal or external hexagonal connection). Results: The t test for means of independent samples with unknown variance showed significant greater bone loss for cylindrical implants when considering the top of the implant as coronal reference point to measure bone loss the. But, when the base of smooth neck was used as a coronal reference point for measuring the conical implants have significantly higher bone loss. Conclusions: All studied implant groups had low peri-implant bone loss values. The implant geometry and the smooth neck length significantly influence peri-implant bone loss. Tapered implants with shorter smooth neck length and cervical micro threads had lower marginal bone loss
Economic Appraisal of Profitability and Sustainability of Peri-Urban Agriculture in Bangkok
No full textPromoters of urban and peri-urban agriculture generally stress its positive role in terms of food security, income, employment and improvement of the urban environment. Unfortunately, competition with agricultural and non-agricultural uses of peri-urban farm land often translates into intensive farming systems that are detrimental to the environment. Based on two original surveys of peri-urban farms in the area of Bangok, this paper ranks four cropping systems (fish, shrimp, rice, and fruits) according to their economic profitability. A second step of the analysis aims at taking into account the cost of water into the analysis, so as to assess whether the hierarchy formerly established is modified. Although all environmental costs are not introduced and environmental benefits are ignored, this work paves the way for further research in the area of taking into account the environmental impact of farming activities. ...French Abstract : Les tenants de l'agriculture urbaine et péri-urbaine invoquent généralement son rôle positif en termes de sécurité alimentaire, de génération d'emplois et de revenus et d'amélioration de l'environnement urbain. Toutefois, la concurrence entre usages agricoles et non agricoles de la terre en zone péri-urbaine est malheureusement souvent à l'origine de systèmes agricoles intensifs préjudiciables à l'environnement. A partir de deux enquêtes effectuées dans des exploitations de la zone péri-urbaine de Bangkok, cet article tente de classer quatre systèmes productifs (aquaculture, pisciculture, riziculture et arboriculture fruitière) en fonction de leur rentabilité économique. Dans une seconde partie, nous cherchons à évaluer dans quelle mesure l'introduction du coût de l'eau (l'eau propre étant paradoxalement une ressource rare à Bangkok) dans l'analyse économique de la rentabilité des activités modifie la hiérarchie précédemment établie. Bien qu'imparfait (tous les coûts environnementaux ne sont pas inclus et d'éventuels bénéfices environnementaux sont ignorés), cet article constitue une tentative de prise en compte de l'impact environnemental dans les l'analyse économique des activités agricoles.ENVIRONMENTAL ECONOMICS; PERI-URBAN AGRICULTURE; ASIA; THAILAND
Conformational dependence of through-space tellurium-tellurium spin-spin coupling in peri-substituted bis(tellurides)
No full textThe work in this project was supported by the Engineering and Physical Sciences Research Council (EPSRC). M.B. wishes to thank EaStCHEM and the University of St Andrews for support.Three related series of peri‐substituted bis(tellurides) bearing naphthalene, acenaphthene and acenaphthylene backbones (Nap/Acenap/Aceyl(TeY)2 (Nap=naphthalene‐1,8‐diyl N ; Acenap=acenaphthene‐5,6‐diyl A ; Aceyl=acenaphthylene‐5,6‐diyl Ay ; Y=Ph 1 ; Fp 2 ; Tol 3 ; An‐p 4 ; An‐o 5 ; Tp 6 ; Mes 7 ; Tip 8 ) have been synthesised and their solid‐state structures determined by X‐ray crystallography. Molecular conformations were classified as a function of the two C9‐C‐Te‐C(Y) dihedral angles (θ); in the solid all members adopt AB or CCt configurations, with larger Te(aryl) moieties exclusively imposing the CCt variant. Exceptionally large J(125Te,125Te) spin–spin coupling constants between 3289–3848 Hz were obtained for compounds substituted by bulky Te(aryl) groups, implying these species are locked in a CCt‐type conformation. In contrast, compounds incorporating smaller Te(aryl) moieties are predicted to be rather dynamic in solution and afford much smaller J values (2050–2676 Hz), characteristic of greater populations of AB conformers with lower couplings. This conformational dependence of through‐space coupling is supported by DFT calculations.Peer reviewe
Preventive aspects of peri-implant diseases
No full textNajčešće biološke komplikacije implantološke terapije jesu periimplantatni mukozitis i periimplantitis, koji primarno nastaju zbog nakupljanja bakterijskog biofilma na površinama protetskog nadomjeska na implantatu, što uzrokuje lokalnu upalu, najprije na razini periimplantatne mukoze (mukozitis), a napredovanjem i na razini kosti (periimplantitis). Etiologija i patofiziologija nastanka periimplantatnih bolesti i dalje se istražuju, kao i rizičnih čimbenika koji utječu na razvoj bolesti. Čimbenike koji utječu na nastanak i razvoj periimplantatnih bolesti možemo podijeliti na one povezane s pacijentom, implantatom, mjestom ugradnje implantata,
protetskim radom te terapeutom. Akumulacija plaka, pušenje i zračenje identificirani su kao indikatori rizika za periimplantatni mukozitis. Pušenje, dijabetes, nedostatak keratinizirane sluznice i višak cementa potencijalni su rizični čimbenici čiji se utjecaj još mora dokazati. Postoje dokazi da su povijest uznapredovalog parodontitisa, loša kontrola plaka i neredovita potporna terapija rizični čimbenici za nastanak periimplantitisa, a podaci koji se odnose na pušenje i dijabetes nisu uvjerljivi. Ograničeni su i dokazi koji periimplantitis povezuju s prisustvom submukoznog cementa i pozicijom implantata koja otežava oralnu higijenu. Potrebno je utvrditi kakvu ulogu imaju periimplantatna keratinizirana mukoza, okluzalno preopterećenje, čestice titanija, mikropokreti i korozija. Periimplantitis je komplikacija koja može dovesti do gubitka implantata, a s obzirom na to da liječenje periimplantitisa još nije usavršeno, prevencija je vrlo važna. Razlikujemo četiri razine prevencije; primordijalnu, primarnu, sekundarnu i tercijarnu.
Primordijalna prevencija sprječava razvitak poznatih rizičnih čimbenika za nastanak bolesti u fazi planiranja terapije. Cilj primarne prevencije jest spriječiti nastanak bolesti nakon ugradnje dentalnog implantata te kontrolirajući rizične čimbenike održati zdravlje periimplantatnih tkiva, dok sekundarna prevencija sprječava recidiv bolesti. Tercijarna prevencija sprječava komplikacije bolesti.The most common biological complications of implant therapy are peri-implant mucositis and peri-implantitis. These conditions primarily arise due to the accumulation of bacterial biofilm on the surfaces of prosthetic restorations on implants, leading to localized inflammation, namely periimplant mucositis at the mucosal level and, with disease progression, peri-implantitis at the bone level. The etiology and pathophysiology of peri-implant diseases remain subjects of ongoing research, with various risk factors affecting disease development. We can classify the factors affecting the development and progression of peri-implant diseases into those associated with the patient, the implant, the site of implantation, the prosthetic restoration, and the treating professional. Plaque accumulation, smoking, and radiation have been identified as risk indicators for peri-implant mucositis. Meanwhile, smoking, diabetes, a lack of keratinized gingiva, and excess cement are potential risk factors whose significance still requires further validation. There is evidence that a history of advanced periodontitis, poor plaque control, and irregular supportive therapy are risk factors for peri-implantitis. However, the data regarding smoking and diabetes remain inconclusive. Limited evidence also exists regarding the role of submucosal cement and implant positioning in ways that hinder oral hygiene. Further research is needed to determine the impact of peri-implant keratinized mucosa, occlusal overload, titanium particles, micromovements, and corrosion. Peri-implantitis is a complication that can lead to implant loss, and its treatment has not yet been perfected, making prevention crucial. There are four levels of prevention: primordial, primary, secondary, and tertiary. Primordial prevention aims to eliminate known risk factors for disease development at the therapy planning stage. Primary prevention focuses on preventing disease onset after dental implant placement and maintaining peri-implant tissue health by controlling risk factors. Secondary prevention is intended to prevent disease recurrence. Tertiary prevention aims to prevent disease complications
Stephanos Peri poleōn = Stephanus De urbibus /
No full textErrata, last leaf.Signatures: pi² *⁶ chi² A-5S⁴ 5T². Chi1 signed *3.Includes index.Title page vignette. Engraving on leaf following t.p. has been ascribed to Romeyn de Hooghe, but is not included by J. Landwehr in his Romeyn de Hooghe as book illustrator.Pinedo's preface dated 1676, p. [738].Mode of access: Internet.Binding: vellum, tooled in blind with double frames and central strap-work medallions. Author & title written at head of spine
Revitalizing the peri-urban in Trieste, Italy
No full textExploration on the peri-urban transition zone between Trieste and its hinterland Karst through housing, recreation and transportation infrastructure. The design proposal consists of system of small interventions that take into account the land management problems of the peri-urban hills.Architecture, Urbanism and Building Sciences | Borders and Territorie
Biodiesel and vegetable oil market in European Union: some evidences from threshold cointegration analysis
No full textIn this paper we analyse the long-run relationships between vegetable oils prices and conventional diesel price in EU during the period 2005- 2007. We utilise recent developments on threshold cointegration approach to investigate if asymmetric dynamic adjusting processes exist among rapeseed oil, sunflower oil, soybean oil and diesel prices. The results suggest that the two-regime threshold cointegration model exist only in favour of rapeseed oil-diesel price pair. Therefore, this vegetable oil price adjusts rapidly to its long run equilibrium, determined by fossil diesel prices, in an asymmetric manner when the divergence between the two prices is above a critical threshold. Consequently, rapeseed oil seems to be particularly exposed to exogenous shocks deriving from global political scenarios, suggesting to redefine the high quota (80%) of EU biodiesel produced by this vegetable oil through a sustainable development of international trade.Vegetable oils market, Biodiesel price, Threshold cointegration., Marketing, Resource /Energy Economics and Policy,
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