Austriacs dins els ordes militars espanyoles en el segle XVI

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Dynamics of F=1 87Rb condensates at finite temperatures

We investigate the dynamics of a F=1 spinor Bose-Einstein condensate of 87Rb atoms confined in a quasi-one-dimensional trap both at zero and at finite temperature. At zero temperature, we observe coherent oscillations between populations of the various spin components and the formation of multiple domains in the condensate. We study also finite temperature effects in the spin dynamics taking into account the phase fluctuations in the Bogoliubov-de Gennes framework. At finite T, despite complex multidomain formation in the condensate, population equipartition occurs. The length scale of these spin domains seems to be determined intrinsically by nonlinear interactions.Comment: 6 pages + 5 figures; matches the published version (and corrects some typos there

Rocandolfo al servicio de Carlos V: Wilhelm von Rogendorf, comendador de Otos (1481 -1541)

Rogendorf, whose family came from Styria and settled in Lower Austria in the middle of the XVth Century. Serving the Hapsburgs from chilhood, he was page to Phillip the Fair in the Low Countries and filled various offices under Emperors Maximilian I, and Charles V, to whom he was linked by a special relationship, and Ferdinand L Military and diplomatic missions took the Austrian nobleman all over Europe, defending the interests of the Hapsburgs against the Venetians, the French, the Valencian Moriscos and the Turks. Unpublished sources show that he stayed in Spain between 1522 and 1528, which enabled him to get to know the country very well. For this, he travelled to where the Emperor was. His stay at the fortress of Calatrava la Nueva to obtain the habit of the Order, granted by Charles V together with the Commandery of Otos, made him part of the institutions most representative of the mentality of the Crown of Castile. On his return to Central Europe, Wilhelm von Rogendorf formed —under Ferdinand I— the core of a native nobility which found, in the habits of the Spanish Military Orders, the outward expression of an ideological identity in the secular struggle against the Moslems taking place at that time on the Peninsula and against the Turks on the other extreme the Hapsburg empire, as well as in the struggle against the Protestants during the transition from the Mediaeval to the Modern world.[fr] L'article essaie de tracer un bref profil biographique de Wilhelm von Rogendorf, noble dont la famille, originaire de Styrie, s'est établie en Basse-Autriche au milieu du XVIème siècle. Depuis son enfance au service des Habsbourg, il fut page de Philippe Le Beau dans les Pays-Bas, et exerça des charges importantes auprès des empereurs Maximilien l", Charles Quint, avec qui il était très lié, et Ferdinand l". Les missions militaires et diplomatiques l'amenèrent à voyager dans toute l'Europe, defendant les intérêts dès Habsbourg contre les Vénitiens, les Français, les Mauresques de Valence et les Turcs. Des sources inédites nous permettent d'assurer qu'il est resté en Espagne de 1522 à 1528, et qu'il acquit une grande connaissance du pays, quand il voyagea partout où se trouvait l'Empereur. Son séjour dans la forteresse de Calatrava la Nueva, pour accéder à l'Ordre concédé par Charles Quint ainsi qu'au titre de Commandeur de Otos, l'ont fait participer aux institutions les plus représentatives de la Couronne de Castille. De retour en Europe centrale, Wilhelm von Rogendorf fut le précurseur d'une noblesse autochtone qui trouva dans les Ordres Militaires espagnols, l'expression externe d'une identité idéologique dans la lutte séculaire contre les Musulmans, soit dans la Péninsule, soit contre les Turcs à l'autre extrême des pays habsbourgeois, et dans le passage du Moyen Âge à une période Moderne dans la lutte contre les protetants

Austriacs dins els ordes militars espanyoles en el segle XVI

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Using prodigiosin against some gram-positive and gram-negative bacteria and Trypanosoma cruzi

BACKGROUND: This work aimed to explore the action of natural prodigiosin on both bacterial organisms and Trypanosoma cruzi cells. METHODS: Natural prodigiosin pigment was extracted and purified from cultures of Serratia marcescens. Two media, peanut broth and peptone glycerol broth, both recommended in the literature for prodigiosin production, were compared. The prodigiosin obtained was employed to explore its antimicrobial properties against both bacteria and Trypanosoma cruzi cells. RESULTS: Peanut broth yielded four times more prodigiosin. The prodigiosin showed remarkable activity (minimal inhibitory concentrations in the range of 2-8 µM for bacteria and half maximal inhibitory concentration of 0.6 µM for Trypanosoma cruzi). In fact, the prodigiosin concentration required to inhibit parasite growth was as low as 0.25 mg/l versus 4.9 mg/l of benznidazole required. Furthermore, atomic force microscopy revealed marked morphological alterations in treated epimastigote forms, although no pore-formation activity was detected in protein-free environments. CONCLUSIONS: This work demonstrates the potential usefulness of prodigiosin against some gram-positive and gram-negative bacteria and Trypanosoma cruzi although further studies must be done in order to assess its value as a candidate molecule

Antigen-specific immune reactions to ischemic stroke

Brain proteins are detected in the cerebrospinal fluid (CSF) and blood of stroke patients and their concentration is related to the extent of brain damage. Antibodies against brain antigens develop after stroke, suggesting a humoral immune response to the brain injury. Furthermore, induced immune tolerance is beneficial in animal models of cerebral ischemia. The presence of circulating T cells sensitized against brain antigens, and antigen presenting cells (APCs) carrying brain antigens in draining lymphoid tissue of stroke patients support the notion that stroke might induce antigen-specific immune responses. After stroke, brain proteins that are normally hidden from the periphery, inflammatory mediators, and danger signals can exit the brain through several efflux routes. They can reach the blood after leaking out of the damaged blood-brain barrier (BBB) or following the drainage of interstitial fluid to the dural venous sinus, or reach the cervical lymph nodes through the nasal lymphatics following CSF drainage along the arachnoid sheaths of nerves across the nasal submucosa. The route and mode of access of brain antigens to lymphoid tissue could influence the type of response. Central and peripheral tolerance prevents autoimmunity, but the actual mechanisms of tolerance to brain antigens released into the periphery in the presence of inflammation, danger signals, and APCs, are not fully characterized. Stroke does not systematically trigger autoimmunity, but under certain circumstances, such as pronounced systemic inflammation or infection, autoreactive T cells could escape the tolerance controls. Further investigation is needed to elucidate whether antigen-specific immune events could underlie neurological complications impairing recovery from stroke

An in-line optical technology to control the emulsification degree in a continuous industrial emulsifier for meat sausage production

The stability of comminuted products plays an important role in the economy of meat industries. Proper formulation and the establishment of suitable emulsification conditions can significantly contribute to cooking losses control. The purpose of this research was to study the relationship between light backscatter parameters and cooking losses and develop prediction models that would allow the optimization of the emulsification process in a continuous industrial emulsifier. The optical response of meat emulsions, produced at industrial scale, depended drastically on the formulation (with and without starch) and the degree of emulsification. Furthermore, formula with starch showed significantly lower cooking losses than formula without starch, but for both formulas, several optical parameters correlated with cooking losses. Models for the prediction of cooking losses with R2 values > 0.999 were obtained with five or six statistically significant optical predictors depending on the formula. These results point out the potential of light backscatter technology as a control tool during emulsification

Biofunctionalization of REDV elastin-like recombinamers improves endothelialization on CoCr alloy surfaces for cardiovascular applications

To improve cardiovascular implant success, metal-based stents are designated to modulate endothelial cells adhesion and migration in order to prevent restenosis and late thrombosis diseases. Biomimetic coatings with extra-cellular matrix adhesive biomolecules onto stents surfaces are a strategy to recover a healthy endothelium. However, the appropriate bioactive sequences to selective promote growth of endothelium and the biomolecules surface immobilization strategy remains to be elucidated. In this study, biofunctionalization of cobalt chromium, CoCr, alloy surfaces with elastin-like recombinamers, ELR, genetically modified with an REDV sequence, was performed to enhance metal surfaces endothelialization. Moreover, physical adsorption and covalent bonding were used as biomolecules binding strategies onto CoCr alloy. Surfaces were activated with plasma and etched with sodium hydroxide previous to silanization with 3-chloropropyltriethoxysilane and functionalized with the ELR. CoCr alloy surfaces were successfully biofunctionalized and the use of an ELR with an REDV sequence, allows conferring bioactivity to the biomaterials surface, demonstrating a higher cell adhesion and spreading of HUVEC cells on the different CoCr surfaces. This effect is emphasized as increases the amount of immobilized biomolecules and directly related to the immobilization technique, covalent bonding, and the increase of surface charge electronegativity. Our strategy of REDV elastin-like recombinamers immobilization onto CoCr alloy surfaces via covalent bonding through organosilanes provides a bioactive surface that promotes endothelial cell adhesion and spreading. (C) 2015 Elsevier B.V. All rights reserved.Peer ReviewedPostprint (author’s final draft

Novel architecture for cellular IoT in future non-terrestrial networks: store and forward adaptations for enabling discontinuous feeder link operation

© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.The Internet of Things (IoT) paradigm has already progressed from an emerging technology to an incredibly fast-growing field. Defined as one of the three key services in 5th Generation (5G), massive Machine Type Communications (mMTC) are intended to enable the wide-spread adoption of IoT services across the globe. Satellite-based Non-Terrestrial Networks (NTN) are crucial in providing connectivity with global coverage including rural and offshore areas, which are fundamental for supporting important use cases in future networks. A rapidly growing market for IoT devices with mMTC applications using NarrowBandIoT (NB-IoT) will represent a large share of user equipment (UE) in such areas. While standardization efforts for NTN are underway for forthcoming 3GPP releases, they focus on transparent payload architectures where the satellite platform is necessarily connected to a ground station gateway to be able to provide satellite access services to IoT devices, thus requiring complex ground segment infrastructure in low Earth orbit (LEO) constellation deployments to achieve global coverage. In contrast, satellite network deployments targeting the delivery of delay-tolerant IoT applications using NB-IoT, which are a major mMTC use case, can benefit from architectures based on the use of regenerative payloads in the satellite and support for Store and Forward (S&F) operation where satellite access can remain operational even at times when the satellite is not connected to a ground station. In particular, such an approach would allow for extending satellite service coverage in areas where satellites cannot be connected to ground stations (e.g. maritime or very remote areas with lack of ground-stations infrastructures), improving ground segment affordability by enabling operation with fewer ground-stations and allowing more robust operation of the satellite under intermittent feeder link operation. In this paper, we provide a high-level design of an extended 3GPP architecture featuring store and forward mechanisms for IoT NTN delay-tolerant applications that address the previous challenges, as well as a laboratory validation of said architecture for a specific use case.Peer ReviewedPostprint (published version