558 research outputs found

    Nematodos encontrados en los suelos de la provincia de Guadalajara

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    11 páginas, 3 tablas, 1 figura[EN]A review of the investigations carried out on the soil nematodes found in the province of Guadalajara is done. The species, host plants and distribution oC nematodes are indicated. Nematodes of 32 different species have been found, of which the following are considered interesting from an agricultural point of view: Criconemoides spp., Helicotylenchus canadiensis, H. digonicus, H. dihystera, H. cf. digonicus, Helicotylenchus spp., Heterodera avenae, H. schachtii, Hoplolaimids, Longidorus caespiticola, Macroposthonia solivaga, M. xenoplax, M. cf. sphaerocephala, Merlinius brevidens, Nothocriconema mutabile, Paratrophurus loofi, Pratylenchoides sp., Pratylenchus minyus, Rotylenchus sp., Tylenchorhynchus goffarti, T. maximus, Tylenchorhynchus sp., Tylenchus sp. and Xiphinenza pachtaicum. Finally, the importance of the soil nematodes fol' ihe province of Guadalajara, from an agrIcultural point of view, is indicated.[ES]Se hace una revisión de los trabajos realizados sobre los nematodos del suelo de la provincia de Guadalajara, indicándose las especies encontradas, plantas hospedadoras y distribución. Se han estudiado las 8 localidades siguientes: Azuqueca de Henares, Brihuega, Cogollor, Horna, Molina de Aragón, Pedregal (El), Rillo de Gallo y Torremocha del Campo. Se han tomado muestras de frutales, cereales, plantas industriales y plantas no cultivadas. Se han encontrado 32 nematodos diferentes, destacando por su posible interés agrícola: Criconemoides sp,P., Helicotylenchus canadiensis, H. digonlcus, H. dihystera, H. cf. digonicus, Helicotylenchus spp., Heterodera avenae, H. schachtii, Hoploláimidos, Longidorus caespiticola, Macroposthonia solivaga, M, xenoplax, M. cf. sphaerocephala, Merlinius brevidens, Nothocriconema mutabile, Paratrophurus loofi. Pratylenchoides SD.. Pratylenchus minyus, Rotylenchus sp., Tylenchorhynchus goffárti, T. maximus, Tylenchorhynchus sp., Tylenchus sp.,y Xiphinema pachtaicum. Finalmente se señala la importancia del estudio de los nematodos del suelo, desde el punto de vista agrícola, para la provincia de Guadalajara.C.S.I. C.-Instituto de Edafología y Biología VegetalPeer reviewe

    Amplimerlinius hornensis sp. n. (Nematoda : Merliniinae) with notes on A. siddiqii from Spain

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    4 páginas, 1 tablas, 1 figura[EN]Amplimerlinius hornensis sp. n. from the rhizosphere of Rosa canina L. is described. It is characterised by eight lip annules, 32-35 µm long stylet and a c' range of 1.95-2.25. A. siddiqii is also reported but the present specimens differ from the original description in possessing six or seven lip annules and a slightly longer stylet range. Diagnostic table for the species of the genus is also given.[FR] Description est donnée d'Amplimerlinius hornensis sp. n. récolté dans la rhizosphere de Rosa canina L.; il est caractérisé par huit anneaux labiaux, un stylet long de 32-35 µm et un coefficient c' de 1,95-2,25. A. siddiqii est également signalé; les spécimens étudiés different de la population originale par la présence de six ou sept anneaux labiaux et un stylet légérement plus long. Un tableau des valeurs morphométriques des espèces du genre est également donné.Instituto de Edafología y Biología Vegetal- CSICPeer reviewe

    Biogeographical characterization of Trichodoridae in the Iberian Peninsula

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    The existence of two faunistic groups has been found on analysis of the distribution patterns of the 18 species from the family Trichodoridae that have been found in representative crops and environments of the Iberian Peninsula. The first one represented by the autochthonous species, Paratrichodorus hispanus, Trichodorus azorensis, T. beirensis, T. giennensis and T. lusitanicus, is present in uncultivated and cultivated areas; T. azorensis, T. beirensis and T. giennensis have been found very localised, while P. hispanus is widespread in Spain and Northern Portugal and T. lusitanicus is common mainly in southern but also found in central Portugal. The second one is defined by the plant parasitic and virus vector species, P. minor, P. pachydermus, P. teres, T. primitivus, T. sparsus and T. viruliferus, in which P. anemones and T. similis could also be included, in spite of their very localised presence. Paratrichodorus anemones, P. pachydermus, T. similis and T. viruliferus could be regarded as characteristic species from temperate environments, while P. minor, the most widespread species in subtropical crops, has also been found in the Canary and Madeira Islands. On the other hand, P. teres, T. giennensis, T. similis, T. sparsus and T. viruliferus have only been found in Spain, while P. acutus, P. allius, P. nanus, P. porosus, T. azorensis and T. orientalis appeared very localised only in Portugal, P. acutus, P. porosus and T. azorensis appearing only in the Azores and Madeira Archipelagos. Climatic, vegetation and soil type influence are discussed.Fundação para a Ciência e a Tecnologia (FCT)CBMA, U

    Anatomy of the “false thumb” of Tremarctos ornatus (Carnivora, Ursidae, Tremarctinae) : phylogenetic and functional implications

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    Se describe por primera vez el sesamoideo radial o “falso pulgar” del oso de anteojos (Tremarctos ornatus), mostrando la gran similitud morfológica con el del panda gigante (Ailuropoda melanoleuca) y las diferencias que presenta con el resto de los Ursidae. Esto apunta a la existencia de un origen común para esta estructura en ambas especies, pero considerando las filogenias aceptadas de Ursidae, la presencia de falso pulgar en T. ornatus y A. melanoleuca sería una simplesiomorfía respecto al resto de úrsidos, en los cuales el sesamoideo radial nunca aumentó de tamaño, careciendo de la especializada función que posee en Tremarctinae y Ailuropodinae.We describe for the first time the radial sesamoid or “false thumb” of the spectacled bear (Tremarctos ornatus), showing its great morphological similarities with that of the giant panda (Ailuropoda melanoleuca) and the differences with that of the rest of the Ursidae. This points to the existence of a common origin for this structure in both species, but considering the accepted phylogenies of ursids, the sharing of a “false thumb” in T. ornatus and A. melanoleuca would be a plesiomorphy for these groups, whereas in the rest of the ursids the radial sesamoid was probably reduced, lacking the specialised function that this bone has in Tremarctinae and [email protected] [email protected]

    Host Range of Meloidogyne Arenaria (NEAL, 1889) Chitwood, 1949 (Nematoda: Meloidogynidae) in Spain

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    11 páginas, ilustraciones y tablas estadísticas.The distribution of Meloidogyne arenaria in Spain was revised and new samples collected from representative areas. Species and races of the populations were determined by morphometrics, differential host tests and SCAR-PCR. Meloidogyne arenaria was found most often in warm areas, but it can occur in Northern Spain in greenhouses. A total of 125 citations were found, corresponding to 45 different host plants, of which 41 new reports (32.8%) are from this study. The populations studied belong to race 2, which reproduces on tomato plants carrying the Mi gene, or race 3, which reproduces on both resistant pepper and tomato. The most frequent hosts were vegetables, fruit trees, tobacco, grapevine, and weeds.INIA OT- 03-006C7-4 and RTA2007-00099-C00-00; Castilla La Mancha PAI09-0010-4701, INCRECYT CICyT CTM2006-07309.Peer reviewe

    Evaluation of the optical and biomechanical properties of bioengineered human skin generated with fibrin-agarose biomaterials

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    Significance: Recent generation of bioengineered human skin allowed the efficient treatment of patients with severe skin defects. However, the optical and biomechanical properties of these models are not known. Aim: Three models of bioengineered human skin based on fibrin-agarose biomaterials (acellular, dermal skin substitutes, and complete dermoepidermal skin substitutes) were generated and analyzed. Approach: Optical and biomechanical properties of these artificial human skin substitutes were investigated using the inverse adding-doubling method and tensile tests, respectively. Results: The analysis of the optical properties revealed that the model that most resembled the optical behavior of the native human skin in terms of absorption and scattering properties was the dermoepidermal human skin substitutes after 7 to 14 days in culture. The time-course evaluation of the biomechanical parameters showed that the dermoepidermal substitutes displayed significant higher values than acellular and dermal skin substitutes for all parameters analyzed and did not differ from the control skin for traction deformation, stress, and strain at fracture break. Conclusions: We demonstrate the crucial role of the cells from a physical point of view, confirming that a bioengineered dermoepidermal human skin substitute based on fibrin-agarose biomaterials is able to fulfill the minimal requirements for skin transplants for future clinical use at early stages of in vitro development.Ministry of Science, Innovation and Universities of Spain PGC2018-101904-A-I0Instituto de Salud Carlos III (ISCIII), Ministry of Science, Innovation and Universities, through AES 2017 AC17/00013Instituto de Salud Carlos III (ISCIII), Ministry of Science, Innovation and Universities within EuroNanoMed framework, EU AC17/00013University of Granada A.TEP.280.UGR18Junta de Andalucía PE-0395-2019Fundación Benéfica Anticancer San Francisco Javier y Santa Cándida, Granada, SpainOTRI.35A-0

    Dynamic procedure for daily PM56 ETo mapping conducive to site-specific irrigation recommendations in areas covered by agricultural weather networks.

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    [EN] Modern agriculture is underpinned by actual meteorological data registered using automated meteorological stations forming networks specifically created for advising purposes. In many cases, those data used to be accessible online by means of APIs (Application Programming Interface). One of the most common cases is the irrigation-advice weather network implemented with the aim of obtaining ETo values to be used in irrigation recommendations. However, those punctual values of ETo scattered throughout the territory do not allow to produce specific irrigation recommendations for each farm. The only way of disposing site-specific values of ETo is by compiling maps that describe its spatial variation. With this objective, a new dynamic procedure based on an existing regression-based technique of interpolation was proposed. Using the meteorological data registered at the end of each day, maximum and minimum temperature, maximum and minimum relative humidity, wind velocity, and radiation maps were interpolated and then, an ETo map was derived. The proposed procedure demonstrated a special adaptation capacity to the synoptic pattern of each day using some geographical features or others, as appropriate to explain the spatial variability of the interpolated meteorological variable. In those months where radiation plays a key role in the ETo value (growing season), ETo maps obtained were especially fine-grained in areas with significant relief. This procedure improved other contrasted methodologies they were compared with. The impact of using the nearest-weather-station ETo vs interpolated value on a daily water needs was investigated and near 10% average value of error was encountered in the case study.This study has received funding from the eGROUNDWATER project (GA n. 1921) , part of the PRIMA program supported by the European Union 's Horizon 2020 research and innovation program, and the WATER4CAST project (PROMETEO/2021/074) , which is funded by the Conselleria de Innovacion, Universidades, Ciencia y Sociedad Digital de la Comunitat Valenciana.Meteorological data were provided by SIAR: " Sistema de Informacion Agroclimatica para el Regadio. Ministerio de Agricultura, Pesca y Alimentacion" . Special thanks to Carlos Garrido Garrido and Ivan Cilleros Fuentetaja for providing us an API-SIAR access. Thanks to Luis Bonet for giving us permission to use the picture of the IVIA-SIAR automated station.Garcia-Prats, A.; Carricondo-Antón, JM.; Jiménez Bello, MA.; Manzano Juarez, J.; López Pérez, E.; Pulido-Velazquez, M. (2023). Dynamic procedure for daily PM56 ETo mapping conducive to site-specific irrigation recommendations in areas covered by agricultural weather networks. Agricultural Water Management. 287:1-18. https://doi.org/10.1016/j.agwat.2023.10841511828

    Using Surface Enhanced Raman Scattering to Analyze the Interactions of Protein Receptors with Bacterial Quorum Sensing Modulators

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    Many members of the LuxR family of quorum sensing (QS) transcriptional activators, including LasR of Pseudomonas aeruginosa, are believed to require appropriate acyl-homoserine lactone (acyl-HSL) ligands to fold into an active conformation. The failure to purify ligand-free LuxR homologues in nonaggregated form at the high concentrations required for their structural characterization has limited the understanding of the mechanisms by which QS receptors are activated. Surface-enhanced Raman scattering (SERS) is a vibrational spectroscopy technique that can be applied to study proteins at extremely low concentrations in their active state. The high sensitivity of SERS has allowed us to detect molecular interactions between the ligand-binding domain of LasR (LasRLBD) as a soluble apoprotein and modulators of P. aeruginosa QS. We found that QS activators and inhibitors produce differential SERS fingerprints in LasRLBD, and in combination with molecular docking analysis provide insight into the relevant interaction mechanism. This study reveals signal-specific structural changes in LasR upon ligand binding, thereby confirming the applicability of SERS to analyze ligand-induced conformational changes in proteinsS

    Q-switched mode locking noise-like pulse generation from a thulium-doped all-fiber laser based on nonlinear polarization rotation

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    Q-switched mode locking (QML) noise-like pulse (NLP) emission from an all-fiber thulium-doped laser based on the nonlinear polarization rotation effect is reported. The QML emission is obtained in a cavity with net anomalous dispersion in a pump power interval in between the CW laser threshold and the threshold of the NLP regime. Highest-energy QML pulses were observed with a repetition rate of 812 kHz with a pump power of 520 mW at the optical wavelength of 1881.09 nm. A maximum overall energy of 460 nJ at an average output power of 6.4 mW was reached, which corresponds to a burst of mode-locked noise-like sub-pulses with 8.7 ns of pulse duration within a QML envelope of 11 μs. These results demonstrate unconventional pulse operation regime of NLPs and provide insights into the dynamics of mode-locked fiber lasers

    Design of a sustainable house including the requisites of the Spanish Regulation

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    Abstract: Green Building is a philosophy aiming to maintain a high quality of the built environment while optimizing the use of resources, both materials and energy. Related to green building, sustainable construction consists in the creation and operation of a healthy built environment giving rise to high-performance green buildings. These building concepts have already been taken into account by the European Union (EU) that has promoted the use of alternative energies, thermal insulation and responsible consumption programs, among others. The Directive 2002/91/EC came into force to regulate energy efficiency in new buildings. Member States transposed this text to their legal systems, considering the particularities of to their territories, geography, economy and society. In Spain, the Spanish Technical Building Code (CTE-Código Técnico de Edificación) promotes sustainable building. Other regulations regarding energy buildings certification, energy efficiency or renewable energy promotion have already been adopted. This work presents a house designed taking into account some aspects of the sustainable house design, and compares it with a reference house. These aspects include the thermal requirements of the house following a simplified option established in the basic documents HE1 (Limitation of the energetic demand) and HE4 (Minimal solar contribution for heating domestic water) of the Spanish Building Technical Cod
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