929 resultados para Last Supper in art -- Exhibitions
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BACKGROUND: A possible strategy for increasing smoking cessation rates could be to provide smokers who have contact with healthcare systems with feedback on the biomedical or potential future effects of smoking, e.g. measurement of exhaled carbon monoxide (CO), lung function, or genetic susceptibility to lung cancer. OBJECTIVES: To determine the efficacy of biomedical risk assessment provided in addition to various levels of counselling, as a contributing aid to smoking cessation. SEARCH METHODS: For the most recent update, we searched the Cochrane Collaboration Tobacco Addiction Group Specialized Register in July 2012 for studies added since the last update in 2009. SELECTION CRITERIA: Inclusion criteria were: a randomized controlled trial design; subjects participating in smoking cessation interventions; interventions based on a biomedical test to increase motivation to quit; control groups receiving all other components of intervention; an outcome of smoking cessation rate at least six months after the start of the intervention. DATA COLLECTION AND ANALYSIS: Two assessors independently conducted data extraction on each paper, with disagreements resolved by consensus. Results were expressed as a relative risk (RR) for smoking cessation with 95% confidence intervals (CI). Where appropriate, a pooled effect was estimated using a Mantel-Haenszel fixed-effect method. MAIN RESULTS: We included 15 trials using a variety of biomedical tests. Two pairs of trials had sufficiently similar recruitment, setting and interventions to calculate a pooled effect; there was no evidence that carbon monoxide (CO) measurement in primary care (RR 1.06, 95% CI 0.85 to 1.32) or spirometry in primary care (RR 1.18, 95% CI 0.77 to 1.81) increased cessation rates. We did not pool the other 11 trials due to the presence of substantial clinical heterogeneity. Of the remaining 11 trials, two trials detected statistically significant benefits: one trial in primary care detected a significant benefit of lung age feedback after spirometry (RR 2.12, 95% CI 1.24 to 3.62) and one trial that used ultrasonography of carotid and femoral arteries and photographs of plaques detected a benefit (RR 2.77, 95% CI 1.04 to 7.41) but enrolled a population of light smokers and was judged to be at unclear risk of bias in two domains. Nine further trials did not detect significant effects. One of these tested CO feedback alone and CO combined with genetic susceptibility as two different interventions; none of the three possible comparisons detected significant effects. One trial used CO measurement, one used ultrasonography of carotid arteries and two tested for genetic markers. The four remaining trials used a combination of CO and spirometry feedback in different settings. AUTHORS' CONCLUSIONS: There is little evidence about the effects of most types of biomedical tests for risk assessment on smoking cessation. Of the fifteen included studies, only two detected a significant effect of the intervention. Spirometry combined with an interpretation of the results in terms of 'lung age' had a significant effect in a single good quality trial but the evidence is not optimal. A trial of carotid plaque screening using ultrasound also detected a significant effect, but a second larger study of a similar feedback mechanism did not detect evidence of an effect. Only two pairs of studies were similar enough in terms of recruitment, setting, and intervention to allow meta-analyses; neither of these found evidence of an effect. Mixed quality evidence does not support the hypothesis that other types of biomedical risk assessment increase smoking cessation in comparison to standard treatment. There is insufficient evidence with which to evaluate the hypothesis that multiple types of assessment are more effective than single forms of assessment.
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"Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity" states the WHO. However, the current focus in this important area seems to be on reducing diseases, while less attention is paid on aspects how to increase the well-being of populations. This paper reviews three examples where well-being has drawn attention of the public and policy makers, and compares the policies of two wealthy countries. The first example is noise. Noise can reduce sleep quality and cause physiological, mental, and social effects. In Switzerland, noise receives a lot of attention by the public. Swiss laws are extensive, e.g., they prohibit trucks and planes from traveling at night. In the USA, there is little public attention and no national strategy against environmental noise. The second example is aesthetics and recreation. Many humans seek contact with the beauty of nature. The USA and Switzerland have similar strategies for achieving clear waters, while the protection of scenic views is approached very differently. Lifestyle is the last example. In the USA, the desire for individual freedom is a leading cause for suburban sprawl, a car-dependent sedentary lifestyle resulting in obesity, asthma and loss of community spirit. In Switzerland, a strict land use planning seeks to balance individual and public interests and stresses public transportation, which seems to be a more promising approach. Paying attention to aspects of well-being while developing political strategies might be a promising model to tackle environmental problems. Successful strategies employed so far seem to include the public, local authorities, politicians and scientists in this process, which might have been a key for their success. [Authors]
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We review the key topics of one of the areas with the biggest impact of the last years in the chemical and pharmaceutical industry that is Crystal Engineering. The relevance of polymorphs and co-crystals from different points of view is been highlighted and broadly illustrated by means of several recent examples of studies carried out in this field. In addition, the most suitableinstrumental techniques and the intellectual property implications are reviewed.
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The Biblioteca de Catalunya (BC) was created in 1907 by the Institut d’Estudis Catalans (IEC). In 1914 the Mancomunitat de Catalunya gave the library its condition of cultural and public service, open to researchers and scholars. The library underwent several changes as a consequence of political events, along the most of 20th century. In 1981 it was recognized by law as national library and it recovered its foundational aim of gathering, preserving and disseminating the bibliographical output of Catalonia and the production related with the Catalan linguistic field. As the proud host of ANADP2, the BC wants to show the attendees to the conference how, since 2004, has positioned itself to face the challenge of the new informational and technological paradigm. The library strategy for oncoming years includes giving open and free access online to the digitization of many of his collections through the portals MDC (Digital Memory of Catalonia), ARCA (Old Catalan Serials Archive) and Google Books project; the creation of the Web Archive of Catalonia and, as the last step in the consolidation of its policy, a high-security preserving repository named COFRE, based on the international guidelines and initiatives and the experience of the BC itself.
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El progressiu increment del flux migratori en els darrers anys a Catalunya genera un major percentatge de dones en estat fèrtil que requereixen d’una atenció vinculada a la seva salut reproductiva. D’aquesta manera, els professionals sanitaris es veuen sotmesos a treballar sota una diversitat cultural que moltes vegades genera un “xoc intercultural” dificultant la relació assistencial entre professional i usuari. Per aquest motiu, el següent estudi pretén donar una aproximació de la influència cultural de la dona immigrant (marroquina i subsahariana) en quatre àmbits: embaràs, part, post-part i maternitat.Hipòtesis: S’identifiquen necessitats bàsiques assistencials no resoltes satisfactòriament en el grup de dones immigrants (marroquines i subsaharianes) en el període del part, puerperi immediat i intermedi, a més d’un impacte intercultural associat.Objectiu principal: Conèixer les vivències, percepcions i conductes de les dones marroquines i subsaharianes en l’embaràs, el part, el post-part, la maternitat dins el seu marc cultural i com influeixen en l’atenció sanitària del nostre país.Material i mètodes: S’ha realitzat un estudi de disseny mixt. Per una banda s’ha disposat d’una metodologia qualitativa descriptiva que utilitza la teoria fonamentada “Grounded Theory” com a instrument metodològic, i per l’altra, s’ha optat per una metodologia quantitativa per analitzar les dades clíniques i epidemiològiques de gestants immigrants que havien donat a llum al Servei d’Obstetrícia-Sala de Parts de l’Hospital Sta. Caterina (Girona), durant el període comprès entre el mes de novembre de 2012 i gener de 2013.La recollida de dades s’ha realitzat sota una entrevista semiestructurada i una observació participant com a instruments qualitatius, i el suport del “carnet de l’embaràs” i la “història obstètrica” de cada dona per elaborar l’estudi quantitatiu. Pel que fa a l’anàlisi de les dades en l’estudi qualitatiu s’ha seguit el procés analític plantejat per la Teoria fonamentada i en el cas de l’estudi quantitatiu, s’ha comptatamb el suport d’una tesi doctoral per comparar els resultats amb els de les dones autòctones, dels quals fa referència la tesi.Resultats: En l’estudi qualitatiu, s’han trobat especificitats culturals en relació a la percepció del part, desenvolupament del part ( a nivell conductual), implicació en el post-part, valoració de l’atenció sanitària rebuda i el concepte de maternitat. Pel que fa a l’estudi quantitatiu comparatiu, s’han indentificat diferències entre el col·lectiu de la mostra estudiada i les dones autòctones referent als antecedents obstètrics i paritat, al control gestacional i al desenvolupament del part ( a nivell fisiològic)
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Nationwide surveys on radiation dose to the population from medical radiology are recommended in order to follow the trends in population exposure and ensure radiation protection. The last survey in Switzerland was conducted in 1998, and the annual effective dose from medical radiology was estimated to be 1 mSv y(-1) per capita. The purpose of this work was to follow the trends in diagnostic radiology between 1998 and 2008 in Switzerland and determine the contribution of different modalities and types of examinations to the collective effective dose from medical x-rays. For this reason, an online database (www.raddose.ch) was developed. All healthcare providers who hold a license to run an x-ray unit in the country were invited to participate in the survey. More than 225 examinations, covering eight radiological modalities, were included in the survey. The average effective dose for each examination was reassessed. Data from about 3,500 users were collected (42% response rate). The survey showed that the annual effective dose was 1.2 mSv/capita in 2008. The most frequent examinations are conventional and dental radiographies (88%). The contribution of computed tomography was only 6% in terms of examination frequency but 68% in terms of effective dose. The comparison with other countries showed that the effective dose per capita in Switzerland was in the same range as in other countries with similar healthcare systems, although the annual number of examinations performed in Switzerland was higher.
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Breastfeeding is considered the ideal way of providing young infants with the required nutrients for healthy growth and development. An increase in the prevalence and duration of breastfeeding has been observed over the last years in response to promotion campaigns. When a medicamentous treatment is started, discontinuation of breastfeeding is often proposed, for fear of harmful consequences for the infant. Nevertheless such a decision is not unimportant, and it appears that many drugs can actually be used during breastfeeding without significant risk. An assessment of the real risk incurred by exposed children makes it possible to avoid unnecessary discontinuations of breastfeeding. This article aims to review the facts needed to assess amount of drug exposure to the child and to list the few drugs associated with significant effects on the nursing infant.
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Aquest treball té com a objectiu principal conèixer si hi ha millora en el control de la malaltia d’una persona que pateix un trastorn mental sever quan disposa d’un suport adequat de la família. Els objectius específics marcats són, avaluar la càrrega familiar que suposa tenir la responsabilitat de cuidar un familiar amb malaltia mental, conèixer les actituds dels familiars de persones que pateixen una malaltia mental, involucrar a la família dins de la teràpia del familiar amb malaltia mental severa, i aconseguir un grau de cooperació i comunicació favorable de la família al pacient. Es tracta d’un estudi d’investigació quantitatiu, transversal i de tipus analític, el qual la mostra de la població estudiada estarà composta de 100 pacients entre 20 i 30 anys amb diagnòstic de trastorn mental sever segons el DSM-IV, atesos durant l’últim any en el Centre de Salut Mental d’Adults de Vic i els seus cuidadors principals o persones més properes. Es realitzarà recollida de dades a través de la revisió de les històries clíniques, informació facilitada pel terapeuta que tracta al pacient i entrevistes als familiars cuidadors o persona més propera i als mateixos pacients. Aquesta entrevista la faran professionals entrenats i competents. Amb tot això s’establirà una correlació entre les variables d’estrès, suport als familiars i el desenvolupament dels rols, i s’agruparan les variables de manera que quedin estructurades en subgrups.
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Over the last century in Karnatik music, the method ofunderstanding raga has been to break it down into its variouscomponents, svara, scale, gamaka, and phrases. In this paper, an attempt is made to define the abstract concept of raga in its entirety within the aesthetics of Karnatik music considering the various components and their symbiotic relationship. This paper also attempts to prove that theidentity of a raga exists as a whole. Section 2 explains theconcept of a fundamental musical note or svara. Section 3 illustrates the concept of gamaka or inflections. Section 4 delves into the concept of raga in detail and then flows into Section 5 which enunciates the identity of a raga in terms of svara, gamaka, and phraseology. The paper concludes in Section 6, and Section 7 gives the references.
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The Iowa Department of Natural Resources uses benthic macroinvertebrate and fish sampling data to assess stream biological condition and the support status of designated aquatic life uses (Wilton 2004; IDNR 2013). Stream physical habitat data assist with the interpretation of biological sampling results by quantifying important physical characteristics that influence a stream’s ability to support a healthy aquatic community (Heitke et al., 2006; Rowe et al. 2009; Sindt et al., 2012). This document describes aquatic community sampling and physical habitat assessment procedures currently followed in the Iowa stream biological assessment program. Standardized biological sampling and physical habitat assessment procedures were first established following a pilot sampling study in 1994 (IDNR 1994a, 1994b). The procedure documents were last updated in 2001 (IDNR 2001a; 2001b). The biological sampling and physical habitat assessment procedures described below are evaluated on a continual basis. Revision of this working document will occur periodically to reflect additional changes.
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In April 2008 a preliminary investigation of fatal and major injury crashes on Iowa’s primary road system from 2001 through 2007 was conducted by the Iowa Department of Transportation, Office of Traffic and Safety. A mapping of these data revealed an apparent concentration of these serious crashes on a section of Iowa 25 north of Creston. Based on this information, a road safety audit of this roadway section was requested by the Office of Traffic and Safety. Iowa 25 is a two-lane asphaltic concrete pavement roadway, 22 ft in width with approximately 6 ft wide granular shoulders. Originally constructed in 1939, the roadway was last rehabilitated in 1996 with a 4-in. asphalt overlay. Except for shoulder paving through a curve area, no additional work beyond routine maintenance has been accomplished in the section. The 2004 traffic map indicates that IA 25 has a traffic volume of approximately 2070 vehicles per day with 160 commercial vehicles. The posted speed is 55 mph. This report contains a discussion of audit team findings, crash and roadway data, and recommendations for possible mitigation of safety concerns for this roadway section.
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Paperikoneinvestointi toteutetaan projekteina, joista muodostuvaa ketjua kutsutaan projektien elinkaareksi. Toteutusketjun viimeinen lenkki on käynnistykseen huipentuva käyttöönotto. Hyvä käyttöönotto palvelee investointia. Käyttöönotoissa koetaan erilaisia ongelmatilanteita, joista osa on satunnaisesti tai usein toistuvia. Investoinnin onnistumisen ja aikataulun asettama paine luo tilanteiden selvittämiseen erityishaasteita. Aina ei selvitä ilman takaiskuja. Tutkimustavoitteena oli kartoittaa käyttöönoton yleiset ongelmat ja niiden yhteydet projektihistoriaan, sekä ne projektinhallinnan osa-alueet, joita parantamalla varmistetaan käyttöönoton ja investoinnin onnistuminen. Tutkimus pohjautuu erilaisistainvestointiprojekteista ja käyttöönotoista saatuihin kokemuksiin, haastatteluihin (3 kpl) ja kyselypalautteeseen (42 kpl). Investoinnin onnistumisedellytykset luodaan projektihistoriassa, käyttöönotossa ne viimeistellään. Onnistuminen mitataan tuotto-odotusten saavuttamisena aikataulussa, johon vaikuttavia tekijöitä ovat tuotannon hallinta, käyttövarmuus ja markkinat. Käyttöönoton onnistumista tulee arvioida käyttöönottotehtävistäsuoriutumisen pohjalta, ei pelkästään investoinnille asetettujen aikataulu- ja tuotantotavoitteiden (laatu, määrä, hallinta) saavuttamisena, kuten usein tapahtuu. Tulosten perusteella käyttöönoton merkittävimmät ongelmat ovat tiedonkulun puutteet, ohjelmallisten korjausten suuri määrä ja palautumisajan riittämättömyys. Tärkeimmät painotukset ovat laiterikkojen estäminen, ohjelmavirheiden korjaaminen ja henkilöstön osaamisen varmentaminen. Konelinjan vaikeimmin hallittava osa on radan päänvienti. Osapuolten poikkeavat näkökulmat sekä työn laadun merkitys testauksissa, koulutuksissa ja kenttätoiminnoissa nousee tuloksista myös vahvasti esiin. Tutkimus on selvittänyt sille asetetut tavoitteet. Käyttöönoton merkittävimmät ongelmat syntyvät sen lähihistoriassa: testauksissa, koulutuksessa ja kenttätoiminnoissa. Käyttöönoton onnistumiseksi tulee painotusprojektinhallinnassa keskittää käynnistysvaiheen suunnitteluun sekä kenttätoimintojen hallintaan.
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The avocado fruit borer, Stenoma catenifer (Wals.) has been a limiting factor in growing avocados over the last years in many Brazilian states. This is a result of the lack of safe and feasible management practices to minimize the fruit borer damage. The aim of this study was to obtain information on the pest biology and ecology as well as on the role of natural enemies to define strategies to control the pest. Samples were taken biweekly and consisted of 20 fruits collected randomly (10 from the upper half and 10 from the lower half of the plant) in ten plants, cv. Margarida, in a commercial avocado grove in Arapongas and Cambé regions, PR, from October/2001 to September/2002. Laboratory determinations of the percentage of damaged fruit per plant region, location and number of bored fruit sites, and the number and location of the fruit borer eggs, including parasitized ones, were performed. The results showed that S. catenifer preferred to oviposit and attack fruits located on the upper half of the trees. The majority of the eggs were laid on the fruit pedicel whereas the damage was mainly located on the lower half of the fruits. Trichogrammatids were the most constant and abundant parasitoids found in both localities throughout the study period.
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Résumé: Les vipères du genre Vipera sont des serpents venimeux distribués dans la totalité du Paléarctique. Malgré cette répartition considérable, elles sont extrêmement menacées, leur déclin étant principalement dû à la destruction et à la fragmentation de leur habitat ainsi qu'à la persécution humaine. Afin d'apporter de nouveaux éléments dans le contexte de la protection de ce groupe de reptiles, nous avons utilisé durant ce travail de thèse différents marqueurs moléculaires pour étudier la structuration génétique à petite et à large échelle chez trois espèces appartenant au genre Vipera. La première étude, une phylogéographie moléculaire de la vipère ammodytes (Vipera ammodytes), a montré dans l'ensemble de l'aire de répartition une forte structuration génétique provenant d'isolements antérieures au Pléistocène. La présence d'un nombre important de clades dans le centre des Balkans suggère que cette région a fourni de nombreux refuges isolés durant les glaciations. Ces dernières ont également eu un impact considérable sur la diversité génétique au sein de la majorité des clades, suite à d'importants goulots d'étranglement durant le Pléistocène. L'étude de la phylogéographie de la vipère aspic (Vipera aspis) a montré une différenciation génétique entre les populations présentes de chaque côté des Alpes, mais également une forte structuration interne avec la mise en évidence d'un refuge en France. Cette étude est la première à établir clairement l'utilisation d'un refuge français pour un vertébré terrestre. La troisième partie de cette thèse a étudié la phylogéographie de la vipère péliade (Vipera berus), espèce cible de ce travail. En plus de la mise en évidence d'un groupe génétique inattendu (localisé dans le nord de l'Italie, le sud de l'Autriche, le nord de la Slovénie et l'extrême sud-est de la Suisse), la variabilité génétique au sein du groupe nordique (comprenant les animaux de l'entier de l'aire de répartition de l'espèce à l'exception des individus du groupe italien et les animaux provenant des Balkans) est suffisamment importante pour conclure à l'utilisation de refuges glaciaires nordiques durant les dernières glaciations, en complément des refuges habituellement décrits pour la majorité des espèces animales (soit les péninsules ibérique, italienne et balakanique). Ces résultats nous ont conduit à effectuer une étude morphologique (quatrième partie) comparant les vipères péliades du "clade italien" et du "clade nordique" décrits ci-dessus. Seules de petites différences morphologiques ont pu être mises en évidence, malgré une séparation de ces groupes estimée à plus d'un million d'années. Une étude à plus petite échelle, centrée sur le Massif jurassien et certaines populations alpines et françaises, a été entreprise afin d'estimer leur diversité génétique et d'évaluer la structuration génétique entre les populations à l'aide de marqueurs microsatellites (cinquième partie). Une importante structuration a été observée entre les populations distantes de plus de 3 kilomètres, la structuration entre les populations plus proches étant plus limitée. De plus, une diversité génétique plus faible dans les populations jurassiennes et alpines comparativement aux populations du massif central et de la côte atlantique a été constatée, probablement due à une perte de diversité génétique lors de la recolonisation post-glaciaire. La sixième étude s'est intéressée au succès reproducteur des mâles de vipères péliades en conditions naturelles. Une corrélation entre la taille des mâles et leur succès reproducteur a été relevée, les individus de plus grande taille ayant un succès reproducteur plus élevé. Le taux de multipaternité a aussi été investigué, démontrant que la proportion de pontes issues de plusieurs pères est élevée (69%) malgré la faible densité de vipères observée sur le site étudié. Finalement, aucun lien entre le nombre de pères au sein d'une ponte et la mortalité des jeunes à la naissance n'a pu être mis en évidence, contrastant avec des travaux précédents. En conclusion, l'observation de la structuration très marquée chez les vipères péliades devrait permettre d'affiner les méthodes de protection de l'espèce dans le massif jurassien. A plus large échelle, l'importante structuration génétique observée chez les vipères ammodytes, aspic et péliade résultant de l'utilisation de nombreux refuges glaciaires, complémentaires aux refuges habituellement utilisés par les espèces animales, démontre l'intérêt de l'analyse phylogéographique des reptiles pour la compréhension des phénomènes de colonisation et d' extinction des populations durant la fin du Tertiaire et le Quaternaire. La mise en évidence chez les différentes espèces de vipères étudiées de nombreux groupes génétiques distincts (ESUs) devrait conduire à des modifications de la taxonomie ainsi qu'au statut de protection de ces espèces. Abstract: The vipers of the genus Vipera are venomous snakes widespread throughout the Palaearctic regions. Despite a large distribution area, several species are extremely threatened, especially due to the destruction and fragmentation of their habitats, as well as by human persecution. In order to increase the knowledge on these species and to improve their protection, several molecular markers have been used to investigate the genetic structure on small and large scales, within three species of the genus Vipera. The first study, a molecular phylogeography of the nose-horned viper (Vipera ammodytes), showed a considerable structuring throughout the distribution area, due to isolation into refugia before the Pleistocene. A high number of clades in the centre of the Balkans suggests that this region harboured numerous isolated glacial refugia during the last glaciation. Moreover, low genetic diversity within several clades implies that most populations of nose-horned vipers have suffered bottlenecks during the Pleistocene. The study of the phylogeography of the asp viper (Vipera aspis) showed genetic differentiation between populations on each side of the Alps, as well as considerable internal genetic structure, suggesting the use of a glacial refugium in France. This study is the first to establish firmly the occurrence of a French refugia for a terrestrial vertebrate. The third part of this work involved a phylogeographic study of the adder (Vipera berus), the target species of this thesis. Three clades were revealed: a Balkan clade (corresponding to the subspecies V. b. sachalinensis), an unexpected Italian clade (limited to northern Italy, southern Austria, northern Slovenia and southeasternmost corner of Switzerland) and a Northern clade clade (including adders of the whole distribution area excepted animals from the Balkan and the Italian clades). The genetic variability within the Northern clade is sufficiently high to conclude that a northern glacial refugia during the last glaciation, in addition to those refugia already described for the main species (Iberian, Italian and Balkan peninsula). These results motivated a morphological study (part four) comparing the adders from the Italian and the Northern clades describe above. Only small morphological differences have been found, despite the split between these two clades have taken place more than 1 million years ago. A study on a local scale, focused on the Jura Mountains, on a few populations in the Alps and France was, performed to estimate the genetic diversity and the genetic structure between populations using microsatellite markers (part five). Considerable structure was observed between populations separated by more than 3 kilometres, whereas the structure between closer populations is less marked. Moreover, lower genetic diversity in the populations from Jura Mountains and Alps was noticed compared to populations from Massif Central of Atlantic coast. Such loss of genetic variation probably followed post-glacial recolonisation. The sixth study focused on the reproductive success of male adders in the wild. A positive correlation between body length and reproductive success was observed. Multiple paternity was also observed in most of clutches (69%) despite the low density of adders in the study area. Finally, no relationship was found between the number of fathers in a clutch and the survival of offspring at birth, contradicting previous studies. To conclude, the observation of a significant genetic structure in Vipera berus will enable recommendations to be made to improve protection of this species in the Jura Mountain. On a larger scale, the considerable genetic structure found within Vipera ammdoytes, V. aspis and V. berus, resulting from isolation in additional glacial refugia to those already described for other species, demonstrates the relevance of phylogeographic studies of reptiles to better understand the colonisation and disappearance during the last Tertiary and the Quaternary. The observation of several groups of evolutionary significant units (ESUs) within the three studied species might lead to a revision of the taxonomy, as well as their conservation status.
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La inmigración ha comportado la elaboración de numerosos documentos de definición de las políticas de integración que han dibujado el camino seguido y las etapas vividas. Cataluña ha pasado de la observación del fenómeno migratorio a centrarse en los últimos años en la intervención, evidentemente haciendo esfuerzos importantes en organización de las administraciones y las entidades que trabajan con y para los inmigrantes. Una vez presentada la evolución realizada, analizamos, a partir de un trabajo empírico, las limitaciones que los profesionales de las dministraciones comarcales y locales observan para el desarrollo del modelo.