81 research outputs found
RAR/RXR and PPAR/RXR Signaling in Spinal Cord Injury
The retinoid
acid receptors (RAR) and peroxisome proliferator-activated receptors (PPAR)
have been implicated in the regulation of inflammatory reactions. Both receptor families contain ligand-activated transcription factors which form heterodimers with retinoid X receptors (RXR). We review data that imply RAR/RXR and PPAR/RXR pathways in physiological reactions after spinal cord injury. Experiments show how RAR signaling may improve axonal regeneration and modulate reactions of glia cells. While anti-inflammatory properties of PPAR are well documented in the periphery, their possible roles in the central nervous system have only recently become evident. Due to its anti-inflammatory function this transcription factor family promises to be a useful target after spinal cord or brain lesions
Проектирование автоматизированной системы управления резервуарного парка нефтяного месторождения
Объектом исследования является резервуарный парк нефтеперекачивающего месторождения. Цель работы – модернизация автоматизированной системы управления насосным агрегатом резервуарного парка нефтеперекачивающего месторождения с использованием ПЛК, на основе выбранной SCADA-системы. В данном проекте была разработана система контроля и управления технологическим процессом на базе промышленных контроллеров Yokogawa CENTUM CS, с применением SCADA-системы GENESIS32. Разработанная система может применяться в системах контроля, управления и сбора данных на различных промышленных предприятиях. Данная система позволит увеличить производительность, повысить точность и надежность измерений, сократить число аварий.The object of the study is the tank farm of an oil-pumping field. The purpose of the work is the modernization of the automated control system for the pump unit of the oil-storage reservoir reservoir using PLCs, based on the SCADA system chosen. In this project, a process control and management system was developed on the basis of industrial controllers Yokogawa CENTUM CS, using the SCADA system GENESIS32. The developed system can be used in monitoring, control and data collection systems at various industrial enterprises. This system will increase the productivity, improve the accuracy and reliability of measurements, reduce the number of accidents
Güvercin
Adolphe Belot'nun Sabah'ta yayımlanan Güvercin adlı romanının ilk ve son tefrikalar
Zur Frage der Integration qualitativer und quantitativer Forschung in der Psychologie: eine Einführung und ein Diskussionsbeitrag
"In dem erweiterten Editorial zum Schwerpunktteil
„Die Integration qualitativer
und quantitativer Forschung (IQQF) in
der Psychologie“ werden zunächst fünf aktuelle,
genuine IQQF-Konzeptionen vorgestellt
und hinsichtlich ihrer Perspektiven
auf Grenzen und Möglichkeiten von Integrationsdesigns
verglichen. Hierbei wird
ein besonderes Augenmerk auf die Frage
gerichtet, welche dieser Designs für die
Psychologie als eher unproblematisch und
welche als besonders herausfordernd zu
bewerten sind; als zu letzterer zugehörig
wird die gleichrangige Integration von
qualitativen und quantitativen Ergebnissen
zu einer Forschungsfrage identifiziert.
Speziell dazu wird ein Disposition-Sinn-
Modell vorgeschlagen, anhand dessen sich
zukünftige Entwicklungsmöglichkeiten
von mixed methods in der Psychologie diskutieren
lassen. Das Editorial schließt mit
einer Übersicht der im Schwerpunktteil
versammelten Beiträge, die als Beispiele
für in der Psychologie gängigen IQQFVarianten
stehen und Anregungen bieten
für die weiterführende Methodenentwicklung
in der psychologischen Forschung." (Autorenreferat)"This extended editorial introduces into the
special issue on „The integration of qualitative
and quantitative research (IQQR) in
psychology” and also presents a genuine
contribution to the debate. We begin with a
brief description of five current methodological
conceptions on IQQR provided in the
literature and compare them concerning
their specific perspectives on chances and
limitations of mixed methods designs.
Herein, we give our attention to the question
of which of these designs may be easily
adopted by psychological research and
which, in contrast, may be particularly challenging.
As a good example of the latter we
identify designs in which qualitative and
quantitative research findings are integrated
in an approach that attaches equal
value to both methodological strands. Specifically
to this point, we then propose a
Disposition-Meaning-Model which we use in
order to discuss the chances of the future
development of mixed methods in psychology.
This editorial ends with a brief presentation
of the papers contributing to this special
issue and with the recommendation to
make use of their thematic and methodological
diversity for the further development
of methods in psychological research." (author's abstract
Formación de usuarios-Difusión de recursos en el CSIC
En esta presentación se plantea la formación de usuarios cómo uno de los servicios de las bibliotecas del CSIC cuya finalidad es el aprovechamiento de los diferentes recursos de información disponibles : OPAC, bases de datos, colecciones impresas y colecciones digitales
Влияние фазовых модификаций кремнезема на фильтрационно-емкостные свойства пород-коллекторов на газовых месторождениях
Фазовые модификации кремнезема из аморфной фазы в кристаллическую вызывают изменение порового пространства и проницаемости пород-коллекторов газовых месторождений. Данный переход к кремнезема определяет разработку и поиск газовых месторождений.Phase modifications of silica from the amorphous phase in the crystalline process of changing the threshold space and permeability of rock reservoirs of gas fields. This transition to silica determines the development and search for gas deposits
C5aR1 Activation Drives Early IFN-gamma Production to Control ExperimentalToxoplasma gondiiInfection
Toxoplasma gondii (T. gondii) is a parasite infecting animals and humans. In intermediate hosts, such as humans or rodents, rapidly replicating tachyzoites drive vigorous innate and adaptive immune responses resulting in bradyzoites that survive within tissue cysts. Activation of the innate immune system is critical during the early phase of infection to limit pathogen growth and to instruct parasite-specific adaptive immunity. In rodents, dendritic cells (DCs) senseT. gondiithrough TLR11/12, leading to IL-12 production, which activates NK cells to produce IFN-gamma as an essential mechanism for early parasite control. Further, C3 can bind toT. gondiiresulting in limited complement activation. Here, we determined the role of C5a/C5aR1 axis activation for the early innate immune response in a mouse model of peritonealT. gondiiinfection. We found thatC5ar1(-/-)animals suffered from significantly higher weight loss, disease severity, mortality, and parasite burden in the brain than wild type control animals. Severe infection inC5ar1(-/-)mice was associated with diminished serum concentrations of IL-12, IL-27, and IFN-gamma. Importantly, the serum levels of pro-inflammatory cytokines, including IL-1 alpha, IL-6, and TNF-alpha, as well as several CXC and CC chemokines, were decreased in comparison to wt animals, whereas anti-inflammatory IL-10 was elevated. The defect in IFN-gamma production was associated with diminishedIfngmRNA expression in the spleen and the brain, reduced frequency of IFN-gamma+NK cells in the spleen, and decreasedNos2expression in the brain ofC5ar1(-/-)mice. Mechanistically, DCs from the spleen ofC5ar1(-/-)mice produced significantly less IL-12 in response to soluble tachyzoite antigen (STAg) stimulationin vivoandin vitro. Our findings suggest a model in which the C5a/C5aR1 axis promotes IL-12 induction in splenic DCs that is critical for IFN-gamma production from NK cells and subsequent iNOS expression in the brain as a critical mechanism to control acuteT. gondiiinfection
Distribución profunda, aspectos biológicos y ecológicos de Aristeus Antennatus (Risso, 1816) en el Mediterráneo Occidental y Central
[EN] The object of the DESEAS Project, funded by the EC, was to gather preliminary data on the abundance and maximum depth distribution of the rose shrimp Aristeusantennatus in the Mediterranean Sea. An exploratory survey was therefore designed with that goal in mind and conducted on the R/V García del Cid, sampling the maximum depths in three specific areas in the central and western Mediterranean, one off Ibiza (Balearic Islands), one off Calabria (western Ionian Sea), and one off the southern Peloponnesian Peninsula (Gulf of Kalamata, eastern Ionian Sea). The depths sampled ranged from 600 to 4000 m, with specimens of A. antennatus being collected down to 3300 m. There were three distinct boundaries marking the abundance of this species: 1500 m, relatively low abundance (<100 ind km-2). The known population structure of this shrimp species, with increasing proportions of males and juveniles with depth, was also recorded in the deep-sea regions in other areas of the Mediterranean. No evidence of any differences in gonad development or in the presence of spermatophores carried by females was found in any of the three sampling areas. Lastly, a tendency for the relative proportion of juveniles to increase with depth was also observed[ES] El objetivo del proyecto DESEAS, financiado por la CE, fue obtener datos preliminares de abundancia y distribución de profundidad máxima de la gamba rosada Aristeus antennatus en el Mar Mediterráneo.
El diseño de la campaña exploratoria fue realizado con este propósito y se desarrolló a bordo del B/O García del Cid. Se realizaron muestreos en las máximas profundidades de tres áreas específicas en el Mediterráneo occidental y central: una cerca de Menorca (Islas Baleares), otra frente a las costas de Calabria (Iónico occidental) y la última al sur de la península del Peloponeso (en el Golfo de Kalamata, Iónico oriental). Las profundidades muestreadas fueron las comprendidas entre 600 y 4000 m, obteniendo individuos de A. antennatus hasta 3300 m. Se detectaron tres niveles de abundancias diferenciados en esta especie: 1500 m, relativamente poco abundante (< 100 ind km-2). En las tres áreas estudiadas se confirmó la estructura de la población conocida hasta el momento, es decir, aumento de la proporción de machos y juveniles con la profundidad. No se encontraron evidencias de diferencias en el desarrollo gonadal o en la presencia de espermatóforos de las hembras entre áreas. Finalmente se observó la existencia de una tendencia en el aumento de la proporción de juveniles con la profundidadThis work was financially supported by the Directorate General Fisheries of the EC as part of the DESEAS survey programme (DGXIV, Study Contract, 2000/39)Peer reviewe
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