1,735 research outputs found
Pseudo Goldstone Bosons Phenomenology in Minimal Walking Technicolor
We construct the non-linear realized Lagrangian for the Goldstone Bosons
associated to the breaking pattern of SU(4) to SO(4). This pattern is expected
to occur in any Technicolor extension of the standard model featuring two Dirac
fermions transforming according to real representations of the underlying gauge
group. We concentrate on the Minimal Walking Technicolor quantum number
assignments with respect to the standard model symmetries. We demonstrate that
for, any choice of the quantum numbers, consistent with gauge and Witten
anomalies the spectrum of the pseudo Goldstone Bosons contains electrically
doubly charged states which can be discovered at the Large Hadron Collider.Comment: 25 pages, 5 figure
La mutualitĂ nel caregiving: una revisione della letteratura
Mutuality, considered the feeling of intimacy and the positive relationship between a caregiver and a arereceiver, is gaining an increasing interest in the international research arena, on the light of the socio-demographic changes and the increase in chronic degenerative diseases. The purpose of this article is to make a critical analysis of the literature on
mutuality in order to identify its predictors and outcomes. A literature review was performed with the following databases: PubMed, CINAHL, PsycInfo, ASSIA and Pciological Abstract. Twenty articles were selected. From the critical
analysis of the literature mutuality emerges as key variable in the process of caregiving and in the mental and physical health of the caregiver and carereceiver. In caregivers, high levels of mutuality are associated with less stress, depression
and burden and a better quality of life and perceived health; in patients, high mutuality improves the recovery process from an illness, reduces anxiety and depression and improves the quality of life. Future studies aimed at the study of this
variable also in the Italian population could support the development of programs to improve the quality of life of caregivers
and carereceiver
Les pratiques pastorales d'un berger sur l'alpage de la Vieille Selle: un modĂšle reproductible?
Des critĂšres de structuration et de gestion de lâespace sont retenus pour caractĂ©riser les pratiques pastorales dâun berger sur un alpage
A cryogenic waveplate rotator for polarimetry at mm and sub-mm wavelengths
Mm and sub-mm waves polarimetry is the new frontier of research in Cosmic
Microwave Background and Interstellar Dust studies. Polarimeters working in the
IR to MM range need to be operated at cryogenic temperatures, to limit the
systematic effects related to the emission of the polarization analyzer. In
this paper we study the effect of the temperature of the different components
of a waveplate polarimeter, and describe a system able to rotate, in a
completely automated way, a birefringent crystal at 4K. We simulate the main
systematic effects related to the temperature and non-ideality of the optical
components in a Stokes polarimeter. To limit these effects, a cryogenic
implementation of the polarimeter is mandatory. In our system, the rotation
produced by a step motor, running at room temperature, is transmitted down to
cryogenic temperatures by means of a long shaft and gears running on custom
cryogenic bearings. Our system is able to rotate, in a completely automated
way, a birefringent crystal at 4K, dissipating only a few mW in the cold
environment. A readout system based on optical fibers allows to control the
rotation of the crystal to better than 0.1{\deg}. This device fulfills the
stringent requirements for operation in cryogenic space experiments, like the
forthcoming PILOT, BOOMERanG and LSPE.Comment: Submitted to Astronomy and Astrophysics. v1: 10 pages, 8 figures. v2:
corrected labels for the bibliographic references (no changes in the
bibliography). v3: revised version. 9 pages, 7 figures. Added a new figure.
Updated with a more realistic simulation for the interstellar dust and with
the latest cryogenic test
STEVENALTICA, A NEW GENUS OF MOSS AND LEAF-LITTER INHABITING FLEA BEETLES FROM BOLIVIA (COLEOPTERA: CHRYSOMELIDAE: GALERUCINAE: ALTICINI).
A new genus, Stevenaltica, with two new species, S. normi and S. erronis, from Bolivia is described and illustrated. It is similar to Exoceras Jacoby. An identification key for all flea beetle genera known to occur in mosses in the Western Hemisphere is provided
Dietary Strategies for Management of Metabolic Syndrome: Role of Gut Microbiota Metabolites
Metabolic syndrome (MetS) is a complex pathophysiological state with incidence similar to that of a global epidemic and represents a risk factor for the onset of chronic non-communicable degenerative diseases (NCDDs), including cardiovascular disease (CVD), type 2 diabetes mellitus, chronic kidney disease, and some types of cancer. A plethora of literature data suggest the potential role of gut microbiota in interfering with the host metabolism, thus influencing several MetS risk factors. Perturbation of the gut microbiota's composition and activity, a condition known as dysbiosis, is involved in the etiopathogenesis of multiple chronic diseases. Recent studies have shown that some micro-organism-derived metabolites (including trimethylamine N-oxide (TMAO), lipopolysaccharide (LPS) of Gram-negative bacteria, indoxyl sulfate and p-cresol sulfate) induce subclinical inflammatory processes involved in MetS. Gut microbiota's taxonomic species or abundance are modified by many factors, including diet, lifestyle and medications. The main purpose of this review is to highlight the correlation between different dietary strategies and changes in gut microbiota metabolites. We mainly focus on the validity/inadequacy of specific dietary patterns to reduce inflammatory processes, including leaky gut and subsequent endotoxemia. We also describe the chance of probiotic supplementation to interact with the immune system and limit negative consequences associated with MetS
A NEW GENUS OF MOSS-INHABITING FLEA BEETLES (COLEOPTERA: CHRYSOMELIDAE) FROM NICARAGUA
Nicaltica new genus and new species (N. selvanegra Konstantinov, Chamorro-Lacayo and Savini) from moss habitat in Nicaragua are described and illustrated. Nicaltica is compared to Kiskeya Konstantinov and Chamorro-Lacayo, Monotalla Bechyne Ì, and Normaltica Konstantinov
Manufacturing the creative city: Symbols and politics of Amsterdam North
Experimentation and urban innovation are becoming central references in the discourses of local politicians and urban policymakers aiming to trigger spatial change in times of austerity. Emerging electoral parties and political groups frequently make use of symbolic references to advocate new urban agendas, especially when urban change has high socio-political impacts. This paper explores the relation between political change and spatial interventions by examining how symbols are used to carry out post-industrial urban development. Amsterdam North, once a historical stronghold of the Labor electorate, is today the living laboratory for liberal-progressive parties. Despite initial political dissent against transformation in the area, the planning approach employed in the redevelopment of North currently inspires a new urban agenda for the city. Looking at symbolic acts, languages and objects, we explain how this political change was conveyed through symbols that link past images of manufacturing industry and human labor to emerging narratives of creative urbanism and entrepreneurialism
Bluetongue disease
Bluetongue (BT) is a noncontagious OIE-listed disease of domestic and wild ruminants caused by a virus (Bluetongue virusâBTV) of the Orbivirus genus within the family Reoviridae and transmitted by biting midges of the genus Culicoides. BT is a considerable socioeconomic concern and of major importance for the international trade of animals and animal products. In the past, BT endemic areas were considered those between latitudes 40 °N and 35 °S; however, BT has spread far beyond this traditional range. BTV has multiple serotypes and these serotypes exist in a complex network of serological cross-relationships, varying from partial to no protection between heterologous strains. This chapter summarizes several aspects of BT and BTV with particular emphasis for BTV epidemiology in Sahelian Africa
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