bluuebunny/crossref_metadata_2025 huggingface dataset:
Ceratocephala testiculata (Crantz) Roth és további adatok a Bükkalja flórájához
Authors: Schmotzer András
Published: May 2015

A cikkben a Bükkalja területéről 367 taxonról (365 fajról és két hibridről) közlök elterjedési adatot az 1997–2014 időszakból, mely dűlőszinten (lokalitás) összesen 5 470 botanikai adatnak felel meg. A felmérés keretében herbáriumi adatgyűjtést is folytattam (összesen 344 herbáriumi lap). A fajok értékékelésekor Vojtkó András flóraművéből indultam ki, de az azóta megjelent publikációk adatait is felhasználtam. 45 olyan fajt regisztráltam, mely a flóraműben nem szerepel, igaz ezek közül 3 fajnak ismertek voltak korábbi adatai (Acer negundo, Elaeagnus angustifolia, Xanthium strumarium). Az új fajok közül természetes előfordulású, honosnak tekinthető 6 faj (Carex flacca, Ceratocephala testiculata, Glycerrhiza echinata, Gypsophila paniculata, Kochia laniflora, Marrubium vulgare), míg 5 faj a gyomflóra részét képezi (Anthemis ruthenica, Chenopodium ficifolium, Eragrostis pilosa, Senecio vernalis, Xanthium strumarium). Az új fajok jelentős része adventív előfordulású, melyekhez soroltam azon fajokat is, melyek honosak a hazai flórában, de a bükkaljai előfordulásaik egyértelműen szünantróp élőhelyekhez köthetőek (összesen 5 faj: Crypsis alopecuroides, Limonium gmelini subsp. hungaricum, Salsola kali, Scirpoides holoschoenus, Trifolium angulatum). A változó, leromló flóra képviselői az újonnan kimutatott inváziós fajok (összesen 11 faj), melyek megtelepedése és tömeges térhódítása az elmúlt évtizedekben gyorsult fel (lásd Bidens frondosa, Impatiens glandulifera, Phytolacca esculenta, Xanthium italicum). A flóra kritikai feldolgozásakor az újonnan kimutatott fajok mellett 43 olyan fajt is regisztráltam, melynek nem volt ismert recens publikált adata a Bükkből. Az újonnan kimutatott fajokkal ellentétben itt e fajok jelentős része honosnak tekinthető (összesen 38 faj), melyek változatos élőhelypreferenciával jellemezhető csoportokra oszthatók (száraz gyepi, mocsári, erdei és gyom). Az enumerációban 65 fajnál jeleztem, hogy a felmért lokalitások alapján jelentős adatbővülés valósult meg, melynek révén az adott faj elterjedési mintázata pontosítható volt. 24 – változatos élőhelypreferenciával rendelkező – faj esetében az adatbővülés ütemét is részletesen elemeztem a felmért lokalitások (dűlő) és az általuk lefedett KEF negyed-kvadátok alapján. Megállapítást nyert, hogy a rendelkezésre álló adatsorok a flóra évtizedes léptékű változásának nyomonkövetésére nem alkalmasak, viszont a magasabb régiók és az érintkező síksági területek jobb feldolgozottsága révén flóragrádiensek megrajzolásához jól felhasználhatók.
Ein Pakt mit den Bürgern. Ein Interview mit Ewald Kutzenberger
Authors: Kutzenberger Ewald , Holzer Werner , Templ Matthias
Published: May 2015

Das Interview mit Ewald Kutzenberger wurde von Werner Holzer und Matthias Templ am 22.10.2014 durchgeführt.Es beleuchtet den Werdegang von Ewald Kutzenberger, berichtet Hintergründe zur Entstehung des Bundesstatistikgesetzes und gibt Einblicke in den Übergang der Offiziellen Statistik in Österreich von der reinen Datensammlung zur methodischen Analyse von Daten und auch der Anknüpfung zu Universitäten. Unter anderem wird die politikberatende Funktion der Statistik in den Blickpunkt gerückt.
Measuring Nonresponse Bias in a Cross-Country Enterprise Survey
Authors: Bańkowska Katarzyna , Osiewicz Malgorzata , Pérez-Duarte Sébastien
Published: May 2015

Nonresponse is a common issue affecting the vast majority of surveys. Efforts to convince those unwilling to participate in a survey might not necessary result in a better picture of the target population and can lead to higher, not lower, nonresponse bias.We investigate the impact of non-response in the European Commission & European Central Bank Survey on the Access to Finance of Enterprises (SAFE), which collects evidence on the financing conditions faced by European SMEs compared with those of large firms. This survey, conducted by telephone bi-annually since 2009 by the ECB and the European Commission, provides a valuable means to search for this kind of bias, given the high heterogeneity of response propensities across countries.The study relies on so-called “Representativity Indicators” developed within the Representativity Indicators of Survey Quality (RISQ) project, which measure the distance to a fully representative response. On this basis, we examine the quality of the SAFE Survey at different stages of the fieldwork as well as across different survey waves and countries. The RISQ methodology relies on rich sampling frame information, which is however partly limited in the case of the SAFE. We also assess the representativeness of the SAFE particular subsample created by linking the survey responses with the companies’ financial information from a business register; this sub-sampling is another potential source of bias which we also attempt to quantify. Finally, we suggest possible ways how to improve monitoring of the possible nonresponse bias in the future rounds of the survey.
ICJ genocide judgment in the dispute between Croatia and Serbia: Legal analysis and its importance for mutual relations
Authors: Vucic Mihajlo , Novakovic Marko
Published: May 2015

The Judgment of the International Court of Justice in the case of mutual
claims for the breach of the Genocide Convention between Croatia and Serbia
represents the final outcome of 16 years of a dispute which burdened their
bilateral relations on everyday basis. Bearing in mind that the International
Court of Justice, as the international judicial authority with highest
legitimacy in contemporary international order, found both claims to be
unfounded, the judgment can represent an impulse for governments of both
countries to settle the problematic legacy of years of conflict and mutual
allegations. However, some passages from the judgment might be used also as
means of diplomatic pressure by both governments, since the International
Court of Justice blamed the Croatian government for the grave crimes short of
genocide commited during the Operation Storm, but also adopted the
interpretation of the ICTY?s joint criminal enterprise jurisprudence which
foreshadows further prosecutions for political personalities allegedly
connected with the conception of Greater Serbia.
Status and prospects of Serbia’s accession to the world trade organization
Authors: Jelisavac-Trosic Sanja , Rapaic Stevan
Published: May 2015

For many years now Serbia is persistent in its attempt to become a full
member of the World Trade Organization. Countries that are not yet members
represent a tiny minority of the total world trade, and Serbia is one of
them. Membership in the WTO is de facto requirement for accession to the
European Union. This paper explains how far Serbia traveled in her way to
this international organization, whose agreements are governing the global
rules of trade between nations. Special attention was paid to the question
why it is important that Serbia joins this organization, and what can be
concluded from the accession experiences of countries in the region. The
authors of this study will try to explain the importance of the WTO
accession, and the manner in which membership in this organization will
affect Serbia?s existing foreign trade relations.
Chlorophyll as an indicator of green tea quality
Authors: Ošťádalová Martina , Tremlová Bohuslava , Pokorná Jana , Král Martin
Published: May 2015

The objective of this work was to study the changes in chlorophyll contents in green teas stored under different conditions and to suggest the most suitable way and length of green tea storage. A secondary aim was to evaluate the possibility of using the chlorophyll content as an indicator of tea freshness. Samples for analysis were obtained from a range of tea-growing regions. Chlorophyll contents were measured using UV-vis spectrophotometry. Chlorophyll absorbance was measured at 642.5 and 660 nm. Prior to storage, chlorophyll concentration in teas ranged from 1.12 to 1.89 mg per 1 g of tea, which corresponded to data given by other authors. Storage was found to lead to a decline in chlorophyll concentration. From the 6th month of storage onwards, a significant decrease (P < 0.05) was observed in all samples, irrespective of storage conditions. Based on the findings of this study, original and metal packaging can be considered the most chlorophyll-friendly. On the other hand, glass and paper packaging stored in direct daylight were found to have the strongest impact on chlorophyll concentration. Overall, it can be concluded that the storage time can have a strong influence on oolong green tea colour as an important qualitative variable. Thus, the shelf-life of tea should be shorter than the 12 months claimed by most manufacturers. Once the relationship between changes in chlorophyll concentration and length of the storage period had been established, the chlorophyll content was suggested as an indicator of the storage time (freshness) of a tea substance.
Determination of fatty acid content in sheep milk by means of near infrared spectroscopy
Authors: Lužová Táňa , Šustová Květoslava , Kuchtík Jan , Mlček Jiří , Vorlová Lenka , Sumczynski Daniela
Published: May 2015

The study focused on the use of the Fourier transform near infrared spectroscopy in determining the content of selected fatty acids in raw non-homogenized sheep milk. The raw sheep milk sample spectra were scanned in reflectance mode using the FT NIR Antaris spectrophotometer. The reliable functional calibration models were created for estimation of the contents of myristic, oleic, lauric, palmitic, and stearic acids (with calibration correlation coefficients of R = 0.999; 0.999; 0.993; 0.992; 0.858) and with standard errors SEC = 0.056; 0.152; 0.066; 0.367; 1.36%.
Detection of phthalic acid esters in the packaging films of meat products
Authors: Bogdanovičová Soňa , Jarošová Alžbeta , Kameník Josef
Published: May 2015

The contents of di-n-butyl phthalate (DBP) and di-2-ethylhexyl phthalate (DEHP) were monitored in materials used for packaging films of meat products. A printed sample and a non-printed sample were taken from each of the packaging films analysed, the sample area being 1 dm2, to determine whether or not there is increased presence of phthalates in printed packaging films compared to non-printed packaging films, and to assess possible risks arising from their use. The determination of DBP and DEHP was conducted using high-performance liquid chromatography (HPLC) with the Zorbax Eclipse C8 column and UV detection at a wavelength of 224 nm. Concentrations of phthalates ranged from 2.18 to 81.33 µg∙dm-2 in printed samples and from 2.25 to 69.88 µg∙dm-2 in those without printing. This study shows different contents of phthalates in printed and non-printed areas of packaging films. The printed area had in most cases a higher content of phthalates probably due to the content of the substances in the printing colours.
HybVOR: A Voronoi-Based 3D GIS Approach for Camera Surveillance Network Placement
Authors: Yaagoubi Reda , Yarmani Mabrouk , Kamel Abdullah , Khemiri Walid
Published: May 2015

As a consequence of increasing safety concerns, camera surveillance has been widely adopted as a way to monitor public spaces. One of the major challenges of camera surveillance is to design an optimal method for camera network placement in order to ensure the greater possible coverage. In addition, this method must consider the landscape of the monitored environment to take into account the existing objects that may influence the deployment of such a network. In this paper, a new Voronoi-based 3D GIS oriented approach named “HybVOR” is proposed for surveillance camera network placement. The “HybVOR” approach aims to achieve a coverage near 100% through three main phases. First, a Voronoi Diagram from buildings’ footprints is generated and cameras are placed on the Voronoi Edges. Second, the level of coverage is assessed by calculating a viewshed based on a raster Digital Surface Model of the region of interest. Finally, the visibility of the main buildings’ entrances is evaluated based on a 3D vector model that contains these features. The effectiveness of the “HybVOR” approach is demonstrated through a case study that corresponds to an area of interest in Jeddah Seaport in the Kingdom of Saudi Arabia.
Effect of Chum Salmon Egg Lectin on Tight Junctions in Caco-2 Cell Monolayers
Authors: Nemoto Ryo , Yamamoto Shintaro , Ogawa Tomohisa , Naude Ryno , Muramoto Koji
Published: May 2015

The effect of a chum salmon egg lectin (CSL3) on tight junction (TJ) of Caco-2 cell monolayers was investigated. The lectin opened TJ as indicated by the decrease of the transepithelial electrical resistance (TER) value and the increase of the permeation of lucifer yellow, which is transported via the TJ-mediated paracellular pathway. The effects of CSL3 were inhibited by the addition of 10 mM L-rhamnose or D-galactose which were specific sugars for CSL3. The lectin increased the intracellular Ca2+ of Caco-2 cell monolayers, that could be inhibited by the addition of L-rhamnose. The fluorescence immunostaining of β-actin in Caco-2 cell monolayers revealed that the cytoskeleton was changed by the CSL3 treatment, suggesting that CSL3 depolymerized β-actin to cause reversible TJ structural and functional disruption. Although Japanese jack bean lectin and wheat germ lectin showed similar effects in the decrease of the TER values and the increase of the intracellular Ca2+, they could not be inhibited by the same concentrations of simple sugars, such as D-glucose and N-acetyl-D-glucosamine.
Can Skin Exposure to Sunlight Prevent Liver Inflammation?
Authors: Gorman Shelley , Black Lucinda , Feelisch Martin , Hart Prue , Weller Richard
Published: May 2015

Liver inflammation contributes towards the pathology of non-alcoholic fatty liver disease (NAFLD). Here we discuss how skin exposure to sunlight may suppress liver inflammation and the severity of NAFLD. Following exposure to sunlight-derived ultraviolet radiation (UVR), the skin releases anti-inflammatory mediators such as vitamin D and nitric oxide. Animal modeling studies suggest that exposure to UVR can prevent the development of NAFLD. Association studies also support a negative link between circulating 25-hydroxyvitamin D and NAFLD incidence or severity. Clinical trials are in their infancy and are yet to demonstrate a clear beneficial effect of vitamin D supplementation. There are a number of potentially interdependent mechanisms whereby vitamin D could dampen liver inflammation, by inhibiting hepatocyte apoptosis and liver fibrosis, modulating the gut microbiome and through altered production and transport of bile acids. While there has been a focus on vitamin D, other mediators induced by sun exposure, such as nitric oxide may also play important roles in curtailing liver inflammation.
Syariah as Heterotopia: Responses from Muslim Women in Aceh, Indonesia
Authors: Taylor Reed
Published: May 2015

In this paper, I argue that the implementation of syariah is best understood as a heterotopia by women in Aceh, Indonesia. The current debates over the role of syariah for women in Acehnese society focus on either a secular human rights critique of non-liberal norms that restrict the rights and freedom of women or a religiously prescribed defense of communal norms that protect women and society. Based on interviews, I identify three variants of how women conceive of and inhabit syariah in Aceh. Two of these variants are underrepresented in the current academic literature on syariah in Aceh. Two key distinctions are drawn between blueprint and iconoclastic utopian thought and state-centric and non-state-centric models of political legitimacy. Rethinking syariah as a “socio-spatial dialectic” allows for all three variants of syariah existing simultaneously as a heterotopia in Acehnese society.
Comparison and Validation of Long Time Serial Global GEOV1 and Regional Australian MODIS Fractional Vegetation Cover Products Over the Australian Continent
Authors: Ding Yanling , Zheng Xingming , Jiang Tao , Zhao Kai
Published: May 2015

Fractional vegetation cover (FVC) is one of the most critical parameters in monitoring vegetation status. Comprehensive assessment of the FVC products is critical for their improvement and use in land surface models. This study investigates the performances of two major long time serial FVC products: GEOV1 and Australian MODIS. The spatial and temporal consistencies of these products were compared during the 2000–2012 period over the main biome types across the Australian continent. Their accuracies were validated by 443 FVC in-situ measurements during the 2011–2012 period. Our results show that there are strong correlations between the GEOV1 and Australian MODIS FVC products over the main Australian continent while they exhibit large differences and uncertainties in the coastal regions covered by dense forests. GEOV1 and Australian MODIS describe similar seasonal variations over the main biome types with differences in magnitude, while Australian MODIS exhibit unstable temporal variations over grasslands and shifted seasonal variations over evergreen broadleaf forests. The GEOV1 and Australian MODIS products overestimate FVC values over the biome types with high vegetation density and underestimate FVC in sparsely vegetated areas and grasslands. Overall, the GEOV1 and Australian MODIS FVC products agree with in-situ FVC values with a RMSE around 0.10 over the Australian continent.
Surface Plasmon Resonance: A Versatile Technique for Biosensor Applications
Authors: Nguyen Hoang , Park Jeho , Kang Sebyung , Kim Moonil
Published: May 2015

Surface plasmon resonance (SPR) is a label-free detection method which has emerged during the last two decades as a suitable and reliable platform in clinical analysis for biomolecular interactions. The technique makes it possible to measure interactions in real-time with high sensitivity and without the need of labels. This review article discusses a wide range of applications in optical-based sensors using either surface plasmon resonance (SPR) or surface plasmon resonance imaging (SPRI). Here we summarize the principles, provide examples, and illustrate the utility of SPR and SPRI through example applications from the biomedical, proteomics, genomics and bioengineering fields. In addition, SPR signal amplification strategies and surface functionalization are covered in the review.
Migrant and Non-Migrant Families in Chengdu, China: Segregated Lives, Segregated Schools
Authors: Li Nan , Placier Peggy
Published: May 2015

This study documented the experiences of Chinese rural-urban migrant children and their parents living in the host city of Chengdu, China. It was informed by previous studies but applied a theoretical lens cultural reproduction theory—to reveal deeper understanding of rural-urban migrant families’ lives in the city of Chengdu. Participants in this study were 10 families—10 migrant parents, 10 local Chengdu resident parents, 5 local Chengdu children, and 5 migrant children. Through qualitative interviews and observations the researchers created 5 family case studies, documenting differences and similarities in the lives of migrant and local resident families in Chengdu. Results indicated that children in the two groups experienced unequal childhoods. Although the Chinese central government has issued a number of proactive policies to allow migrant children to attend local urban public schools since 2003, the negative effect of the longstanding Hukou residency policy still impacts migrant families’ lives in Chengdu. In this article we discuss an entrenched urban-rural divide between urban residents and rural-urban migrant families, in work, community, and schooling.
Problèmes, problématiques et perspectives de la didactique de la géographie (Problems, problematics and didactic of geography prospects)
Authors: Audigier François
Published: May 2015

Résumé. - Ayant pour double projet de construire de la connaissance sur ce que sont l'enseignement et l'apprentissage de la géographie dans l'institution scolaire et d'élaborer et de mettre en œuvre des transformations positives, la recherche en didactique obéit aux mêmes impératifs que tout autre domaine de recherche en sciences sociales. Dans cette perspective, cet article rappelle quelques problématiques essentielles et présente des orientations de travail à approfondir.
Légitimer les objets géographiques (Geographical thematic studies recognition)
Authors: Retaillé Denis
Published: May 2015

Résumé. - Comment choisir des objets géographiques pour l'enseignement ? L'expérience des élèves pourrait être la meilleure entrée, liée à leurs compétences. Ainsi trois concepts sont à l'origine de champs très ouverts : le lieu, le territoire, l'espace, pour définir l'unité, l'identité, la distance et la disposition, toutes choses qui sont au cœur de la vie. L'éducation géographique devient alors une évaluation permanente de l'opérationnalité des connaissances face au monde.
Géographie des concours, modalités d'enseignement et de formation, et représentations des étudiants (Geography in the competitive exams, methods of teaching and training, and students mental images)
Authors: Le Roux Anne
Published: May 2015

Abstract. - History students are reluctant to study geography during the year they spend preparing for the CAPES exam. The following year they show a similar reluctance in the course of their training for the teaching of geography. Consequently both aspects will be critically examined in the light of the mental images that they have concerning geography at different moments of their training programme. It seems that these mental images are constantly changing ; the specific characteristics of history students will also be brought to light. It will inevitably give rise to some fresh thinking on the problems set by the training of teachers.
Enseigner les risques naturels, une « nouvelle géographie physique » ? (Teaching natural risks, a new physical geography ?)
Authors: Veyret Yvette
Published: May 2015

Abstract. - One of the themes commonly evoked today in the teaching of so-called advanced geography is natural risks. It seems to us apparent that it would be useful to reflect upon the content of this subject so as to propose a categorization of the risks and an examination of their validity to the field of geography. Going on from this it is then possible to assess whether these ideas are contained within the current syllabus and the currently used secondary school geography books. We must ask ourselves whether there is a teaching of these risks. For a certain number of geography teachers, teaching the risks represents a new approach to the teaching of physical geography. It is necessary to reflect further on the later subject.
Les Laurentides au Canada ou comment un massif entre dans les connaissances et le langage (The Laurentides in Canada : how a massif gets into knowledge and language)
Authors: Hamelin Louis Edmond
Published: May 2015

The quite recent discovery of the Laurentides let us identify the respective contribution of explorers, Jesuits, geologists, geomorphologists, geographers, botanists and residents to the drawing up of a scientific corpus. Quebecers keep loving feelings with this ecumene as we can see in painting and littérature. In the course of the last century the word "Laurentides" moved around in Quebec and Canada, producing a jumbled situation.
Anciennes remontées mécaniques dans les montagnes françaises : pour une géographie des friches touristiques (Old ski lifts and telphers in French mountains : for a geography of touristic waste lands)
Authors: Gauchon Christophe
Published: May 2015

Les problèmes liés à l'aménagement touristique de la montagne ne mobilisent guère les esprits que lors de la mise en place de nouvelles installations soumises à la procédure U.T.N. (Unités Touristiques Nouvelles). Jusqu'à présent, il semble que l'on se soit peu intéressé au sort des anciennes remontées mécaniques abandonnées, véritables friches touristiques.

Douze sites sont ici étudiés, des Pyrénées occidentales aux Alpes françaises du Nord : anciens téléphériques desservant de prestigieux panoramas ou de modestes stations de ski, leur abandon s'explique à la fois par l'évolution des représentations et des pratiques et par le vieillissement des installations. Si à Val Pelouse (Savoie) l'arrêt des remontées mécaniques a été suivi d'une réhabilitation exemplaire des lieux, l'existence de ces friches occasionne ailleurs de multiples nuisances, surtout paysagères, et se perpétue en l'absence actuelle de toute réglementation.
Objectif : l'Observatoire Rouen-Elbeuf (Goal : the Rouen-Elbeuf urban observatory)
Authors: Bourcier A. , Vigne P. , Vaguet O. , Vaguet A.
Published: May 2015

Abstract. - An urban observatory has been settled in order to follow the intra-urban change in the Rouen and Elbeuf towns' area with the help of an image processing system and of a Geographical Information System.
La Géographie devant les mutations des agricultures et des espaces ruraux dans l'Europe médiane (Geography faced with agriculture and rural areas changes in Central Europe)
Authors: Sivignon Michel
Published: May 2015

Résumé. - La décollectivisation des terres en Europe Centrale n'est pas terminée. À son stade actuel elle oppose des exploitations agricoles familiales, qui pour la plupart visent seulement la satisfaction des besoins familiaux et des terres qui demeurent en majorité en exploitation collective, sous une forme de sociétés en adhésion volontaire. Ces transformations favorisent les plus jeunes et amènent des changements dans les productions. Les différences selon les pays restent considérables.
Evolution of zygomycetous spindle pole bodies: Evidence from Coemansia reversa mitosis
Authors: McLaughlin David J. , Healy Rosanne A. , Celio Gail J. , Roberson Robert W. , Kumar T. K. Arun
Published: May 2015

• Premise of the study: The earliest eukaryotes were likely flagellates with a centriole that nucleates the centrosome, the microtubule‐organizing center (MTOC) for nuclear division. The MTOC in higher fungi, which lack flagella, is the spindle pole body (SPB). Can we detect stages in centrosome evolution leading to the diversity of SPB forms observed in terrestrial fungi? Zygomycetous fungi, which consist of saprobes, symbionts, and parasites of animals and plants, are critical in answering the question, but nuclear division has been studied in only two of six clades.

• Methods: Ultrastructure of mitosis was studied in Coemansia reversa (Kickxellomycotina) germlings using cryofixation or chemical fixation. Character evolution was assessed by parsimony analysis, using a phylogenetic tree assembled from multigene analyses.

• Key results: At interphase the SPB consisted of two components: a cytoplasmic, electron‐dense sphere containing a cylindrical structure with microtubules oriented nearly perpendicular to the nucleus and an intranuclear component appressed to the nuclear envelope. Markham's rotation was used to reinforce the image of the cylindrical structure and determine the probable number of microtubules as nine. The SPB duplicated early in mitosis and separated on the intact nuclear envelope. Nuclear division appears to be intranuclear with spindle and kinetochore microtubules interspersed with condensed chromatin.

• Conclusions: This is the sixth type of zygomycetous SPB, and the third type that suggests a modified centriolar component. Coemansia reversa retains SPB character states from an ancestral centriole intermediate between those of fungi with motile cells and other zygomycetous fungi and Dikarya.
Effective prey attraction in the rare Drosophyllum lusitanicum, a flypaper‐trap carnivorous plant
Authors: Bertol Nils , Paniw Maria , Ojeda Fernando
Published: May 2015

• Premise of the study: Carnivorous plants have unusually modified leaves to trap insects as an adaptation to low‐nutrient environments. Disparate mechanisms have been suggested as luring traits to attract prey insects into their deadly leaves, ranging from very elaborate to none at all. Drosophyllum lusitanicum is a rare carnivorous plant with a common flypaper‐trap mechanism. Here we tested whether Drosophyllum plants lure prey insects into their leaves or they act just as passive traps.

• Methods: We compared prey capture between live, potted plants and Drosophyllum‐shaped artificial mimics coated with odorless glue. Since this species is insect‐pollinated, we also explored the possible existence of a pollinator–prey conflict by quantifying the similarity between the pollination and prey guilds in a natural population. All experiments were done in southern Spain.

• Key results: The sticky leaves of Drosophyllum captured significantly more prey than mimics, particularly small dipterans. Prey attraction, likely exerted by scent or visual cues, seems to be unrelated to pollinator attraction by flowers, as inferred from the low similarity between pollinator and prey insect faunas found in this species.

• Conclusions: Our results illustrate the effectiveness of this carnivorous species at attracting insects to their flypaper‐trap leaves.
Charge carrier mobility and electronic properties of Al(Op)3: impact of excimer formation
Authors: Magri Andrea , Friederich Pascal , Schäfer Bernhard , Fattori Valeria , Sun Xiangnan , Strunk Timo , Meded Velimir , Hueso Luis E , Wenzel Wolfgang , Ruben Mario
Published: May 2015

We have studied the electronic properties and the charge carrier mobility of the organic semiconductor tris(1-oxo-1H-phenalen-9-olate)aluminium(III) (Al(Op)3) both experimentally and theoretically. We experimentally estimated the HOMO and LUMO energy levels to be −5.93 and −3.26 eV, respectively, which were close to the corresponding calculated values. Al(Op)3 was successfully evaporated onto quartz substrates and was clearly identified in the absorption spectra of both the solution and the thin film. A structured steady state fluorescence emission was detected in solution, whereas a broad, red-shifted emission was observed in the thin film. This indicates the formation of excimers in the solid state, which is crucial for the transport properties. The incorporation of Al(Op)3 into organic thin film transistors (TFTs) was performed in order to measure the charge carrier mobility. The experimental setup detected no electron mobility, while a hole mobility between 0.6 × 10−6 and 2.1 × 10−6 cm2·V−1·s−1 was measured. Theoretical simulations, on the other hand, predicted an electron mobility of 9.5 × 10−6 cm2·V−1·s−1 and a hole mobility of 1.4 × 10−4 cm2·V−1·s−1. The theoretical simulation for the hole mobility predicted an approximately one order of magnitude higher hole mobility than was observed in the experiment, which is considered to be in good agreement. The result for the electron mobility was, on the other hand, unexpected, as both the calculated electron mobility and chemical common sense (based on the capability of extended aromatic structures to efficiently accept and delocalize additional electrons) suggest more robust electron charge transport properties. This discrepancy is explained by the excimer formation, whose inclusion in the multiscale simulation workflow is expected to bring the theoretical simulation and experiment into agreement.
Hydrogenation of unactivated enamines to tertiary amines: rhodium complexes of fluorinated phosphines give marked improvements in catalytic activity
Authors: Tin Sergey , Fanjul Tamara , Clarke Matthew L
Published: May 2015

In the hydrogenation of sluggish unactivated enamine substrates, Rh complexes of electron-deficient phosphines are demonstrated to be far more reactive catalysts than those derived from triphenylphosphine. These operate at low catalyst loadings (down to 0.01 mol %) and are able to reduce tetrasubstituted enamines. The use of the sustainable and environmentally benign solvent (R)-limonene for the reaction is also reported with the amine isolated by acid extraction.
Vėdinimo įrenginio sezoninio ekserginio naudingumo naudojant TRNSYS modeliavimo priemonę nustatymas
Authors: Genys Kęstutis , Misevičiūtė Violeta
Published: May 2015

Straipsnyje nagrinėjamas oro tiekimo–šalinimo įrenginys, esantis Vilniaus Gedimino technikos universiteto Pastato energetinių ir mikroklimato sistemų laboratorijoje. Nagrinėjamos įrenginio elementų charakteristikos, energijos pernaša įrenginyje ir naudojant TRNSYS modeliavimo priemonę sukuriamas jo matematinis modelis, kuriame vaizduojami visi elementai. Pasiūlytas valdymo mechanizmas, leidžiantis modeliuoti vėdinimo įrenginio veikimą charakteringais laikotarpiais, taip pat, taikant ekserginės analizės principus, sukurtas matematinis algoritmas, atliekantis viso įrenginio ekserginio naudingumo koeficiento skaičiavimą. Modeliavimas atliktas visų metų laikotarpiu, nustatytas vidutinis metinis ekserginis vėdinimo įrenginio naudingumo koeficientas – 75,36 %.
Cinq années de guerre contre les bandes
Authors: Teillet Guillaume
Published: May 2015

Le renouveau du problème social des bandes de jeunes entre 2005 et 2010 invite à s’interroger d’une part sur les évolutions perceptibles dans sa mise en mots et dans l’étiologie véhiculée par ces discours, d’autre part sur les nouvelles modalités de répression créées. Sans prétendre à l’exhaustivité, la chronique du traitement médiatique et politique des bandes au cours de ces années permet de relever les principaux traits de la réactualisation de cette question, à partir desquels s’est étoffé un arsenal de répression judiciaire et policière ciblé sur les bandes.
Retour sur les raisons de la colère
Authors: Truong Fabien
Published: May 2015

L’article, à travers une étude de cas d’un ancien émeutier, envisage la participation aux émeutes urbaines comme un moment biographique, situé et situant, et une expérience personnelle, signifiante et significative. Il rend compte « par le bas » et de façon rétrospective du sens de l’évènement pour ceux qui l’ont fait exister. Se dégagent une métaphysique des émeutes - où l’expérience de la mort et de l’interpellation policière renvoie à un sentiment d’insécurité symbolique exacerbé, une poétique des émeutes – où la dimension festive, cohésive et transcendante est tout aussi centrale – et une politique des émeutes – où se conjuguent révolte contre « le pouvoir », impératif de visibilité et cynisme stratégique, dix ans après.
Déterminer la valeur de l’innovation en train de se faire, c’est aussi et déjà innover
Authors: Bertheau Philippe , Garel Gilles
Published: May 2015

La recherche en gestion a établi l’imprévisibilité du succès d’une innovation. Un corollaire largement accepté veut que la détermination de la valeur de cette innovation ne puisse être que tardive, voire rétrospective. Nous observons dans cette recherche que les acteurs directs de l’innovation sont à même de procéder à une détermination de la valeur précoce, complète et révisable. Nous appuyant sur la théorie C-K, nous montrons que ces équipes appliquent à la détermination de la valeur le même type de raisonnement qu’à l’innovation elle-même. Nous montrons également que ce travail de conception innovante passe par la génération d’outils de gestion locaux, souvent à l’usage exclusif du projet et utilisés pour mettre à l’épreuve les différents concepts de valeur. Codes JEL : O32
La contribution de la recherche universitaire à la formation d’un système sectoriel d’innovation agro-alimentaire au Cameroun
Authors: Fofiri Nzossie Eric Joel , Temple Ludovic , Ndjouenkeu Robert
Published: May 2015

Les enjeux d’approvisionnements alimentaires des villes en Afrique sub-saharienne doivent orienter les politiques publiques vers le soutien à l’accroissement des disponibilités agricoles et l’amélioration de l’accès aux marchés internationaux. Au Cameroun les investissements dans la recherche universitaire technologique créent un potentiel d’innovations pour le secteur agro-alimentaire mais qui est peu utilisé comme le montrent l’augmentation des prix des produits alimentaires transformés et les importations croissantes. Ce constat pose l’hypothèse du manque de synergie entre la recherche technologique et les besoins du secteur productif. En mobilisant un référentiel d’analyse en termes de système d’innovation, nous testons cette hypothèse à partir des travaux réalisés à l’École Nationale Supérieure des Sciences Agro-Industrielles (ENSAI). Les résultats montrent que si la recherche universitaire technologique contribue à la formation du capital humain, elle est conditionnée par les opportunités financières internationales et des initiatives individuelles. Les outputs en termes de connaissances et technologies sont peu transformés en innovations mobilisables par le système productif. Codes JEL : D83, O13, O32
Des chaînes pour la neige
Authors: Burdeau Emmanuel
Published: May 2015

Résumé Récits flottants.
QuelLE hystérique êtes-vous ?
Authors: Easterman-Ulmann Rachel
Published: May 2015

Résumé Intense vertige
Puente de Almodóvar sobre el río Guadalquivir, cerca de Córdoba
Authors: Fernández Casado Carlos
Published: May 2015

Es la primera de una serie de obras destinadas a la construcción de la autopista Córdoba-Sevilla. El método de voladizos sucesivos de hormigón pretensado que se ha adoptado para su construcción, es de gran interés y permitirá su empleo en obras posteriores. La estructura del puente, que está constituida por una viga Gerber apoyada en dos pilas intermedias, comprende un tramo central de 70 m de luz y dos vanos laterales de 35 m de luz cada uno de ellos. El tramo central está formado por una viga prefabricada de hormigón pretensado, de 30 m de luz, simplemente apoyada en dos voladizos de 20 m. Los tramos en voladizo se ejecutaron mediante elementos sucesivos prefabricados, solidarizados mediante los cables del pretensado. Completan la obra los dos viaductos de acceso, con tableros construidos con vigas pretensadas prefabricadas. Este artículo describe el proyecto y ejecución de la obra.
Presa de Djatiluhur, Indonesia
Authors: Coyne A. , Bellier J.
Published: May 2015

Se halla situada en la isla de Java, próxima a Djakarta y sobre el río Tjitarum.
La presa de cierre está constituida por un dique de piedra y una pantal la interior, de impermeabilización, formada con tierras convenientemente seleccionadas y compactadas. El espesor del dique en su base es de 600 m, y tiene una altura respecto a cimientos de 100 m. Este dique crea un embalse de 3.000 x 166 m3 con un nivel de agua a la cota 107 metros.
La particularidad de esta obra consiste en disponer la central y el aliviadero en un cuerpo cilíndrico de hormigón, de 90 m de diámetro exterior y 110 m de altura, en cuya parte superior están el aliviadero de superficie, y en el exterior se hallan las tomas de agua para cada uno de los 6 grupos instalados y la central en un anillo circular inferior.
Documentación relativa a la calidad en la industria de la construcción
Authors: Nadal Aixalá Jaime
Published: May 2015

No disponible
Bloque de apartamentos, en Peñíscola, España
Authors: Marzo Fernández Luis
Published: May 2015

En el bloque concluido —primera fase de un Plan Parcial—, se distribuyen apartamentos de uno, dos y tres dormitorios, con superficies construidas de 62, 94 y 155 m2, respectivamente, habiéndose concedido mucha importancia a la zona de terrazas.
Al exterior, los materiales empleados han sido: ladrillo blanco pajizo, piedra natural de color blanco y madera en su color, logrando una tonalidad acorde con todos los colores ambientes del lugar. También los interiores han sido extraordinariamente cuidados, todo lo cual contribuye a conseguir una armonía y un estilo de calidad, fácilmente apreciables.
Edificio de oficinas de la Stipel, en Milán, Italia
Authors: Bega Melchiorre
Published: May 2015

Consta de dos plantas de sótano, planta baja y ocho plantas tipo.
Las plantas de sótano albergan: las instalaciones generales, archivos, etc., y un garaje.
La planta baja: las zonas de ingreso, el salón para el público, sala de exposiciones, etc.
Y las restantes plantas están ocupadas por las oficinas y servicios.
El edificio resulta de una gran simplicidad constructiva y está decorado con nobleza y ricos materiales.
Vivienda experimental VDL, en Silver Lake, Los Angeles (U.S.A.)
Authors: Neutra Richard J. , Neutra Dion
Published: May 2015

La nueva VIVIENDA EXPERIMENTAL VDL consta de dos plantas y ático.
La planta baja comprende: la sala de coloquios del Instituto Richard J. Neutra; bar; cuarto para el vigilante; etc., y una serie de terrazas y patios en conexión con la zona del invernadero. La primera planta contiene: la zona de estar; cocina; zona de desayunos; dos dormitorios; etc. El ático se halla en conexión con la paisajeada terraza.
La incorporación de una serie de alicientes y dispositivos electrónicos, iluminación, etc., y el adecuado empleo de láminas de agua y puntos de vista cuidadosamente estudiados caracterizan y distinguen a esta presente versión de la VIVIENDA EXPERIMENTAL VDL.
I. Estructuras metálicas ligeras
Authors: Beer Hermann
Published: May 2015

Este trabajo, cuya primera parte se publica en este número y continuará y terminará en los dos próximos de INFORMES DE LA CONSTRUCCIÓN, corresponde al texto escrito por el propio conferenciante de las dos conferencias pronunciadas, en el aula de Costillares, por el profesor Hermann Beer, los días 8 y 9 de marzo pasado.
El profesor Beer, Catedrático de la Escuela Técnica Superior de Graz (Austria), Presidente de la Comisión II de la A.I.P.C. y de la Comisión VIII de la Convención Europea de la Construcción Metálica, goza de una reputación universal en el campo de las estructuras metálicas.
La actualidad del tema elegido para sus conferencias y la abundante documentación gráfica con que las ilustró, han hecho pensar al Instituto en el gran interés que, para los profesionales, pueda tener su publicación.
Es de destacar que el profesor Beer conoce a fondo la lengua española, cuyo dominio adquirió durante sus años de profesor en la Universidad de Tucumán (Argentina). En el texto que sigue el Instituto no ha introducido más que ligeros retoques de sintaxis y ortografía.
Estructuras metálicas ligeras, II
Authors: Beer Hermann
Published: May 2015

No disponible
Puentes de la autopista de Madrid a La Coruña
Authors: Fernández Casado C.
Published: May 2015

La ocasión feliz de haberse planeado con urgencia la transformación en autopista de la carretera de La Coruña en un trozo que se estaba mejorando por desdoblamiento, determinó que se proyectaran con cierta premura, es decir, de una vez y por una sola mano, los diez pasos para cruce a distinto nivel que exigía el cambio de categoría en el trozo de Las Rozas a Villalba.
Conglomerantes puzolánicos. Propiedades y aplicaciones
Authors: De Luxán Baquero M.
Published: May 2015

En el presente trabajo se ha tratado de poner de manifiesto la importancia que, para mejorar la durabilidad de gran número de obras, tiene la adopción de un conglomerante de tipo puzolánico.
Tan sólo cuando se requiera el empleo de un conglomerante al que haya que solicitar alta resistencia mecánica a muy corto plazo, es decir, cuando nos veamos forzados a emplear un P-450, no nos será posible sustituir el portland por un cemento puzolánico. Sí podemos, en cambio, reemplazar a un P-250 o a un P-350 por im PUZ-250 o un PUZ-350, respectivamente. Con tal elección habremos conseguido el equivalente a un portland mejorado, de cuyo seno hidratado ha desaparecido la cal apagada, sustancia nociva que el portland genera siempre al endurecer.
Y así como el P-450 no tiene un PUZ equiparable, hemos de procurar no invadir, con los cementos portland, el amplio campo que corresponde a los puzolánicos. De esta forma atenderemos adecuadamente al concepto real de calidad.
Teatro municipal de Bonn, Alemania Occidental
Authors: Gessler K. , Beck-Erlang W.
Published: May 2015

A orillas del Rin, en plena armonía con la silueta de la ciudad, ha sido construido este notable teatro, cuyo proyecto fue galardonado con el primer premio del Concurso celebrado al efecto.
La sala de butacas tiene una capacidad de 900 asientos, y las instalaciones técnicas con que ha sido dotado el escenario permiten la celebración de espectáculos de todo tipo, incluso ópera.
Nuevo puente colgante sobre el Tigris, en Bagdad
Authors: Steinmann, Boynton, Gronquist, London Ingenieros
Published: May 2015

Este puente colgante es el primero de su tipo construido en Irak. Su estructura fundamental es de acero; y el tablero mixto, de acero y hormigón.
Consta de tres tramos, uno central de 168 m de luz y dos laterales, de 84 m de luz cada uno, más dos accesos, de 23 m, que fue preciso construir debido a la poca resistencia del terreno. Esta es también la causa de que los estribos no soporten la tensión de los cables, y de que la estructura esté anclada en sí misma, para lo cual se reforzó la cimentación con armaduras de acero.
Los cables están constituidos por 37 cordones, y cada cordón, por 91 alambres de 4,5 mm Ø y una resistencia de 158 kg/mm2.
Las pilas van protegidas con cortinas de tablestacas metálicas.
Índices de confort. II
Authors: Alamán Aurelio
Published: May 2015

En este artículo se describen los índices de confort utilizados con mayor frecuencia y se dan unas temperaturas de confort, normales en viviendas y oficinas.
El artículo es un resumen de la parte correspondiente a «índices de confort», que figura en la Monografía número 268 de este Instituto, publicada recientemente.
Dos chalets, en Suecia
Authors: Erskine Ralph
Published: May 2015

Villa Engström, en Sorunda
Esta vivienda, que presenta una «forma» semiesferica, es fundamentalmente un edificio de una sola planta, sin sótano; sin embargo, el cuarto de huéspedes y el «ático» forman como una especie de doble planta dentro de la cúpula. Se trata de una experiencia con vistas a una posible fabricación en serie.
Las diferentes habitaciones se hallan agrupadas en dos bloques: uno de ellos ocupado por los dormitorios —que son de tipo celular y de tamaño mínimo—, y los cuartos de baño; y el otro que comprende un cuarto para los niños, la sala de estar —unida con el vestíbulo—, y la habitación de los huéspedes en la parte superior.
Villa Ström, cerca de Estocolmo
La casa es prácticamente un cubo, con terrazas amplias e independientes estructuralmente del volumen principal. En todo caso, ha dominado la doble preocupación de conseguir magníficas vistas hacia todos los alrededores y una adaptación total a la pendiente del terreno.
La vivienda se ha resuelto con maestría y originalidad, procurando zonas vegetales en el interior, para dar vida y color a las estancias.
Casa Santoja, en Somosaguas, Madrid
Authors: Higueras Fernando , Miró Antonio
Published: May 2015

Esta vivienda unifamiliar, de poderosa textura y severas líneas, campea sobre ima parcela de Somosaguas, mirando abiertamente, sin obstáculos, hacia el magnífico panorama serrano de Madrid. La capital se extiende ante la vista, con su belleza indudable, por una parte, y la altiva montaña pone su fondo imponente, por las otras.
La piedra granítica y la madera de pino de Oregón son casi los únicos materiales empleados. Su calidad, su color natural y las formas atrevidas de la construcción toda, son las notas fundamentales que la hacen destacar de manera notable.
Eurotel, en Montreux, Suiza
Authors: Gonin Roland , Suter René
Published: May 2015

El conjunto construido consta de: una torre, de 16 plantas, que alberga las unidades de habitabilidad de mayor tamaño; un bloque que aloja las unidades más pequeñas; un cuerpo de edificio que enlaza los dos bloques anteriores, y que comprende los servicios comunes: la entrada al eurotel, hall, salones, restaurante, etcétera. Y finalmente, el bloque que contiene la piscina cubierta —con sus servicios correspondientes— y sauna.
La estructura es de hormigón armado, y los cerramientos y demás materiales de exteriores son de agradable aspecto y fácil conservación.
Queen Elizabeth Hall, en Londres, Inglaterra
Authors: Bennett H.
Published: May 2015

Este edificio ha sido construido para la celebración de conciertos y representaciones musicales. Tiene un auditorio con capacidad para 1.106 asientos, organizados en una sola planta.
Sin embargo, las instalaciones técnicas que le fueron incorporadas, tales como equipos de proyección de películas, auriculares, etc., hacen que dicha sala sea susceptible de servir para múltiples usos.
Tanto su tratamiento formal como su decoración, son de un funcionalismo y una sinceridad expresiva notables.
Procédé 122, D.I.T., n. 18
Authors: Editorial Equipo
Published: May 2015

No disponible