5,278 research outputs found
Doubly charged Higgs from - scattering in the 3-3-1 Model
We studied the production and signatures of doubly charged Higgs bosons in
the process , where is a heavy lepton,
at the International Linear Collider (ILC) and CERN Linear Collider
(CLIC). The intermediate photons are given by the Weizscker-Williams
and laser backscattering distributions. We found that significant signatures
are obtained by bremsstrahlung and backward Comptom scattering of laser. A
clear signal can be obtained for doubly charged Higgs bosons, doubly charged
gauge bosons and heavy leptons
Pair of Heavy-Exotic-Quarks at LHC
We study the production and signatures of heavy exotic quarks pairs at LHC in
the framework of the vector singlet model (VSM), vector doublet model (VDM) and
fermion-mirror-fermion (FMF) model. The pair production cross sections for the
electroweak and strong sector are computed.Comment: 7 pages, 6 figures. accept at Int. Jour. of Mod. Phy
Migração de analógico para digital da rede sísmica do CIVISA mediante o desenho de um sistema de aquisição de dados e um rádio telemetria Wi-Fi
ABSTRACT: In September of 2016 a new digital communications network for
the Azores Civil Protection (SRPCBA) was inaugurated providing digital,
voice and Ethernet LAN telemetry capabilities to the Centre for Information
and Seismovolcanic Surveillance of the Azores (CIVISA). During 2017,
the telemetry links from all monitoring techniques were reconnected to the
new communication system. In 2018 the CIVISA has started the migration
from analogue to digital seismic stations and this process allow to liberate
few short period geophones. At the CIVISA’s Information and Communication Technologies Support group (SATIC), motivated by the availability
of sensors, an instrumentation project was started with the objective of
develop affordable digital data acquisition system (DAS) for geophones and
a Wi-Fi telemetry to transmit seismic data to the Data Acquisition Centre
(CAD) of CIVISA, in Ponta Delgada. The DAS design uses Do It Yourself
(DIY) modules for Internet of Things (IoT) applications, microcontrollers
and low power computer boards.RESUMO: Em setembro de 2016, foi inaugurada uma nova rede de comunicações digitais para o Serviço Regional de Proteção Civil e Bombeiros dos
Açores (SRPCBA), fornecendo capacidades de telemetria digital e voz ao
Centro de Informação e Vigilância Sismovulcânica dos Açores (CIVISA).
Em 2017, os enlaces de rádio das diversas técnicas de monitorização
passaram para o sistema atual. Em 2018, o CIVISA iniciou a migração das
estações sísmicas analógicas para digitais e este processo libertou alguns
geofones. No grupo de Serviço de Apoio às Tecnologias de Informação e
Comunicação (SATIC), motivado pela disponibilidade de sensores, iniciou-se
um projeto com o objetivo de desenvolver um instrumento de aquisição de
dados acessível (DAS) para geofones e um rádio Wi-Fi para retransmitir
dados para o Centro de Aquisição de Dados (CAD), em Ponta Delgada. O
DAS utiliza dispositivos Do It Yourself (DIY) para aplicações de Internet
de Coisas (IoT) e computadores de baixa potência.info:eu-repo/semantics/publishedVersio
Assessing the Integrated Impact of Sustainable Innovation on Organisational Performance: An Empirical Evidence From Manufacturing Firms
Sustainable Development Goals (SDGs) have gained importance and the world is moving on a sustainability trajectory, which requires organisations to balance financial, environmental, and social dimensions of management. Companies are encouraged to adopt sustainable innovations that include resource efficiency, waste reduction, energy use, responsible behavior etc., to overcome environmental issues and incorporate societal aspects. However, the types of innovations that embrace the so-called triple bottom line philosophy have been tenuously investigated in relation to organisational performance of firms. Through an empirical study, this work investigates the relationship between sustainable innovation in its three dimensions and organisational performance, including stakeholder management, human resource management and process measures, in the context of Italian manufacturing companies. The results show that a greater emphasis on sustainable innovations has a positive impact on the organisational performance and competitive advantage of firms, revealing the key role of human capital and portraying important avenues for future research
t-channel production of heavy charged leptons
We study the pair production of heavy charged exotic leptons at e+ e-
colliders in the SU(2)_L x SU(2)_I x U(1)_Y model. This gauge group is a
subgroup of the grand unification group E6; SU(2)_I commutes with the electric
charge operator, and the three corresponding gauge bosons are electrically
neutral. In addition to the standard photon and Z boson contributions, we also
include the contributions from extra neutral gauge bosons. A t-channel
contribution due to W_I-boson exchange, which is unsuppressed by mixing angles,
is quite important. We calculate the left-right and forward-backward
asymmetries, and discuss how to differentiate different models.Comment: Increased discussion of experimental signatures. Version accepted by
PR
Lifetime suicidal-related behaviour among patients in treatment forsubstance use disorder: a cross-sectional study
Suicidal-related behaviours are an important concern in individuals who present with substance use disorders
(SUDs). The distinction among the specific characteristics of the different patients might help to improve prevention strategies. We describe and compare the sociodemographic characteristics, severity of addiction, and
psychopathology of the participants depending on the severity of their lifetime suicidal behaviour. In addition,
we examine whether the number of suicide attempts can be estimated based on the variables that differentiate
the groups. A sample of 318 men and 86 women who sought treatment for addiction were assessed. The sample
was divided into: no ideation or attempts, suicidal ideation, one suicide attempt, and two or more suicide attempts. The group with two or more suicide attempts exhibited a greater severity in the addiction profile. The
group with one suicide attempt presented a higher psychopathological symptomatology at the time of the
assessment. The severity of the Psychiatric area was related to the group with two or more attempts and to the
number of suicide attempts. The presence of any number of attempts is associated with greater severity of
addiction. Providing specific intervention strategies for SUD patients depending on their suicidal behaviours is
promising for clinical application.The first author was supported by a grant from the European UnionNext Generation EU by Ministerio de Universidades (Gobierno de
España) and Universidad del País Vasco (UPV/EHU).
The second author was supported by a grant (589/2021) from Universidad Pública de Navarra and Fundación Bancaria Caja Navarra.
Open access funding provided by Universidad Pública de Navarr
A detailed protocol for a rapid analysis of testicular cell populations using flow cytometry
Accurate analysis and quantification of different testicular cell populations are of central importance in studies of male reproductive biology. The traditional histomorphometric and immunohistochemical methods remain the gold standard in studying the complex dynamics of the testicular tissue. Through past years advances have been made in the application of flow cytometry for the rapid analysis of testicular cell populations. Detection of DNA content and of surface antigens and fluorescent reporters have been widely used to analyze and sort cells. Detection of intracellular antigens can broaden the possibilities of applying flow cytometry in studies of male reproduction. Here, we report a detailed protocol for the preparation of rat testicular tissue for detection of intracellular antigens by flow cytometry, and a pipeline for subsequent data analysis and troubleshooting. Rat testicular ontogenesis was chosen as the experimental model to validate the performance of the assay using vimentin and gamma H2AX as intracellular markers for the somatic and spermatogenic cells, respectively. The results show that the assay is reproducible and recapitulates the rat testis ontogenesis.Peer reviewe
Effect of the Influent COD Concentration on the Anaerobic Digestion of Winery Wastewaters from Grape-Red and Tropical Fruit (Guava) Wine Production in Fluidized Bed Reactors with Chilean Natural Zeolite for Biomass Immobilization
The effect of the influent COD concentration on the performance of anaerobic fluidized bed reactors treating winery wastewaters from grape-red wine (GRWW) and guava wine production (GWW) was studied at laboratory scale. Two reactors were used: one treating GRWW (AFB1) and the other processing GWW (AFB2). The behaviour of these reactors packed with Chilean zeolite as biomass immobilization support was compared at mesophilic temperature (35 °C). Influent COD varied from γ = 1–24 g L–1 and the HRT was maintained constant at 1 day throughout the experiment. During the experiment, influent and effluent pH, TVFA, COD and methane gas production were determined. COD removal efficiency increased with the influent COD up to a maximum of around γ = 19 g L–1 for GRWW and up to around 22 g L–1 for GWW due to the increase
of the concentration of phenols. Process performance was slightly better with guava winery wastewater than with grape-red winery wastewater due its lower phenolic content. During the period of non-inhibition the methane yield was virtually constant
- …