336 research outputs found
Alta pressió isostàtica aplicada a carn recuperada mecànicament d'aviram
Get PDFConsultable des del TDXDescripció del recurs: el 3 octubre 2008Títol obtingut de la portada digitalitzadaaEs tracten per alta pressió isostàtica carn recuperada mecànicament d'aviram i salsitxes que contenen aquesta carn, per millorar-ne la qualitat microbiològica i, així, poder-ne augmentar la seguretat i allargar la vida útil en refrigeració. S'apliquen diverses combinacions de pressió (de 300 a 500 MPa), temps (de 5 a 45 min, de manera continua i cíclica) i temperatura (de 2 a 80 ºC), procurant que les condicions de tractament produeixin uns canvis fisicoquímics i sensorials adequats. En alguns experiments, també s'aplica un tractament convencional per calor per poder establir comparacions. La combinació de pressió a 2 ºC amb nisina té un efecte bactericida sinèrgic en la carn recuperada mecànicament d'aviram, sobretot si aquesta s'acidifica lleugerament amb glucono-delta-lactona: es redueixen de manera considerable els recomptes de mesòfils i psicròtrofs i es prolonga la vida útil en refrigeració d'aquesta carn envasada al buit. El tractament per alta pressió és molt efectiu per inactivar recomptes alts de Listeria inoculada en carn recuperada mecànicament d'aviram i mantenir baixos els de cèl·lules supervivents durant l'emmagatzematge al buit en refrigeració. No s'observa un efecte baroprotector del greix sobre la microbiota de la carn recuperada mecànicament d'aviram. La inactivació bacteriana per pressió sembla que es veu més influïda per l'estructura alimentària globalment que no pas pel contingut en alguns components de l'aliment en particular. L'alta pressió aplicada a temperatures de 50 a 75 ºC permet obtenir salsitxes cuites de carn recuperada mecànicament d'aviram amb millor textura i aspecte que els de les cuites de manera convencional. La incorporació de certa quantitat de carn picada de porc també millora aquestes propietats. En salsitxes cuites envasades al buit, el dany subletal provocat per pressió a 65 ºC sobre les cèl·lules bacterianes dura menys que el causat per calor. Així, si en el cas de les salsitxes tractades per alta pressió es trenca la cadena del fred, la càrrega microbiana pot augmentar considerablement. L'efecte bactericida assolit en aquestes salsitxes amb els tractaments per pressió i per calor és similar: s'inactiven importants poblacions de bacteris patògens i causants de deteriorament (mesòfils, psicròtrofs, acidolàctics, enterobacteris, microbiota Baird-Parker i Listeria), la qual cosa dóna lloc a un producte segur i de llarga conservació en refrigeració. Les aplicacions més profitoses de l'alta pressió a les indústries càrnia i avícola són a temperatura moderada: d'una banda, l'elaboració de productes cuits i, de l'altra, el tractament de productes prèviament cuits que han estat manipulats (i, per tant, recontaminats) abans del seu envasament al buit. D'aquesta manera, s'obté un aliment que en refrigeració presenta una qualitat microbiològica òptima
A review of RST-VOLC, an original algorithm for automatic detection and near real-time monitoring of volcanic hot spots from space
No full textThe observation of volcanic thermal activity from space dates back to the late 1960s. Several methods have been proposed to improve detection and monitoring capabilities of thermal volcanic features, and to characterize them to improve our understanding of volcanic processes, as well as to inform operational decisions. In this paper we review the RSTVOLC algorithm, which has been designed and implemented for automated detection and near-real-time monitoring of volcanic hotspots. The algorithm is based on the general Robust Satellite Techniques (RST) approach, representing an original strategy for satellite data analysis in the space-time domain. It has proven to be a useful tool for investigating volcanoes worldwide, by means of different satellite sensors, onboard polar orbiting and geostationary platforms. The RSTVOLC rationale, its requirements and main operational capabilities are described here, together with the advantages of the tool and the known limitations. Results achieved through the study of two past eruptive events are shown, together with some recent examples demonstrating the near-continuous monitoring capability offered by RSTVOLC. A summary is also made of the type products that the method is able to generate and provide. Lastly, the future perspectives, in terms of its possible implementation on the new generation of satellite systems, are briefly discusse
Garn Family including Carn, Garnes, Garns, and Gern Second Edition 2014
No full textThe second edition of the history of Garn family, including the name variations of Carn, Garnes, Garns, and Gern, with Johannes Gern (1615) as the "progenitor" of this family tree. The original ancestors of this family first emigrated from Germany to Bedford and Franklin Counties in Pennsylvania. Different branches then further moved to Ashland County and Sandusky County, Ohio. Some of the documents in this edition are Y-DNA results, church records, land surveys, wills, land patents, letters, bible records, naming conventions, and what future research the author plans to do. There is also two indexes, one of places and one of people. This work is an expansion of earlier members of the Garn family who had done previous research
Effects of acute carnosine and β-alanine on isometric force and jumping performance
Get PDFPurpose: To assess the effects of acute L-carnosine and β-alanine (Carn-BA) supplementation on isometric and dynamic tasks. Methods: Twelve healthy participants performed knee extensors maximal voluntary contractions (MVC) and countermovement jumps (CMJ) before and after a fatiguing protocol (45s continuous CMJ). Isometric and dynamic tests were performed four hours after Carn-BA (2g of L-carnosine and 2g of b-alanine) or placebo (PLA) ingestion, in random order. After the fatiguing protocol, blood lactate concentration ([La-]), general and muscular rate of perceived exertion (RPE), and muscular pain (after 24h and 48h from the end of the fatiguing protocol) were assessed. Results: During the fatiguing protocol, significant decreases in jump height, and increases in contact time were found in both groups from the 15th second onwards to the end of the fatiguing protocol. Average contact time and jump height were respectively lower (-7%; P=0.018) and higher (+6%; P=0.025) in Carn-BA compared to PLA. After the fatiguing protocol, MVC decreased in both PLA and Carn-BA, but it was higher in Carn-BA compared to PLA (+15%, P=0.012), while CMJ did not change. Moreover, general RPE was lower and muscle pain at 24h was higher in Carn-BA compared to PLA, whereas muscular RPE and [La-] did not differ between conditions. Conclusions: Ingesting Carn-BA prior to exercise induced positive effects on MVC and CMJ after the fatiguing protocol and improved CMJ performance during the 45s continuous jumping effort, even when acutely supplemented. Furthermore, Carn-BA reduced the general RPE and increased muscular pain 24 h after the fatiguing task
January 2002 volcano-tectonic eruption of Nyiragongo volcano, Democratic Republic of Congo
No full textIn January 2002, Nyiragongo volcano erupted 14-34 × 106 m3 of lava from fractures on its southern flanks. The nearby city of Goma was inundated by two lava flows, which caused substantial socioeconomic disruption and forced the mass exodus of the population, leaving nearly 120,000 people homeless. Field observations showed marked differences between the lava erupted from the northern portion of the fracture system and that later erupted from the southern part. These observations are confirmed by new 238U and 232Th series radioactive disequilibria data, which show the presence of three different phases during the eruption. The lavas first erupted (T1) were probably supplied by a residual magma batch from the lava lake activity during 1994-1995. These lavas were followed by a fresh batch erupted from fissure vents as well as later (May-June 2002) from the central crater (T2). Both lava batches reached the surface via the volcano's central plumbing system, even though a separate flank reservoir may also have been involved in addition to the main reservoir. The final phase (T3) is related to an independent magmatic reservoir located much closer (or even beneath) the city of Goma. Data from the January 2002 eruption, and for similar activity in January 1977, suggest that the eruptive style of the volcano is likely to change in the future, trending toward more common occurrence of flank eruptions. If so, this would pose a significant escalation of volcanic hazards facing Goma and environs, thus requiring the implementation of different volcano-monitoring strategies to better anticipate where and when future eruptions might take place. Copyright 2007 by the American Geophysical Union.In January 2002, Nyiragongo volcano erupted 14-34 x 10(6) m(3) of lava from fractures on its southern flanks. The nearby city of Goma was inundated by two lava flows, which caused substantial socioeconomic disruption and forced the mass exodus of the population, leaving nearly 120,000 people homeless. Field observations showed marked differences between the lava erupted from the northern portion of the fracture system and that later erupted from the southern part. These observations are confirmed by new U-238 and Th-232 series radioactive disequilibria data, which show the presence of three different phases during the eruption. The lavas first erupted (T-1) were probably supplied by a residual magma batch from the lava lake activity during 1994 - 1995. These lavas were followed by a fresh batch erupted from fissure vents as well as later ( May - June 2002) from the central crater (T-2). Both lava batches reached the surface via the volcano's central plumbing system, even though a separate flank reservoir may also have been involved in addition to the main reservoir. The final phase (T-3) is related to an independent magmatic reservoir located much closer ( or even beneath) the city of Goma. Data from the January 2002 eruption, and for similar activity in January 1977, suggest that the eruptive style of the volcano is likely to change in the future, trending toward more common occurrence of flank eruptions. If so, this would pose a significant escalation of volcanic hazards facing Goma and environs, thus requiring the implementation of different volcano-monitoring strategies to better anticipate where and when future eruptions might take place
Operational and Organizational Issues Facing Corporate Real Estate Executives and Managers
Get PDFThis article examines three major categories of issues facing corporate real estate executives in the future, as determined by a Delphi process survey conducted by the authors. We present areas of agreement and disagreement among the corporate executives surveyed, and distill the results of the Delphi survey and other major studies on the future of corporate real estate into a research agenda for further inquiry.
Myrmica caespitum
No full text2. MYRMICA CAESPITUM. B. M. Formica caespitum, Linn. Faun. Suec. 427,1726. Scop. Ins. Carn. 837. De Geer, Ins. ii. 1105, 7, t. 43, f. 15,16. Schrank, Ins. Aust. 836. Oliv. Enc. Meth. vi. 496. Rossi, Faun. Etrus. ii. 113, 938. Christ. Hym. 503, t. 58, f. 1, 2, 3. Fab. Ent. Syst. ii. 358, 35. Latr. Fourm. 251, t. 10, f. 63. Hab. - Hants, Borders of woods, & c.Published as part of Smith, F., 1851, List of the specimens of British animals in the collection of the British Museum. Part VI. - Hymenoptera Aculeata., London :British Museum on page
The FLECS Expandable Module Concept for Future Space Missions and an Overall Description on the Material Validation
No full textIntérêt de l'analyse histologique rénale pour le diagnostic, le pronostic et le traitement des néphropathies chez le chien et le chat
Get PDFSur la base des connaissances acquises sur l'histologie rénale pendant ces 40 dernières années, l'examen clinique, les examens de laboratoire et l'imagerie médicale permettent de détecter une maladie rénale et d'établir avec plus ou moins d'exactitude un diagnostic, un pronostic et un traitement adéquats. L'objectif de notre étude est d'évaluer l'intérêt de la biopsie rénale en pratique courante. Elle porte sur 54 chiens et 56 chats atteints de néphropathies diverses. Les syndromes rénaux ont été déterminés avec exactitude dans 77% des cas dans les deux espèces. Les hypothèses lésionnelles n'ont été confirmées que dans 57% des chiens et dans 39% des chats. Les pronostics émis avant/après histologie concordent à 67% chez le chien et à 73% chez le chat. Quant à la thérapeutique, elle a été modifiée, suite au résultat histopathologique, dans 37.5% des cas canins et dans 27.6% des cas félins. La biopsie rénale peut donc apporter un complément d'information important en néphrologie canine et féline
Carn [a novel]
No full textA native son returns to Ireland from America to open a meat-processing plant, raising hopes of prosperity for all. But an economic slump, accompanied by renewed sectarian fighting causes the plant to close. A signal for more native sons to leave for America. By the author of Butcher Boy
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